diff --git a/.editorconfig b/.editorconfig new file mode 100644 index 0000000..7818108 --- /dev/null +++ b/.editorconfig @@ -0,0 +1,25 @@ +root = true + +# Пометить все файлы в папке как "сгенерированный код" +# Компилятор обычно игнорирует варнинги в таких файлах +[SharpJaad.AAC/**.cs] +generated_code = true + +# Или точечно отключить конкретные правила для этой папки +[SharpJaad.AAC/**.cs] +dotnet_diagnostic.CS8618.severity = none +dotnet_diagnostic.CS8600.severity = none +dotnet_diagnostic.CS8602.severity = none +dotnet_diagnostic.CS8604.severity = none +dotnet_diagnostic.CS8625.severity = none +dotnet_diagnostic.CS0420.severity = none + +[*.cs] +# Отключаем тяжёлые правила в Debug +dotnet_diagnostic.CA1031.severity = none +dotnet_diagnostic.CA1062.severity = none +dotnet_diagnostic.IDE0058.severity = none +dotnet_diagnostic.IDE0290.severity = none + +# Отключаем все StyleCop правила в Debug +dotnet_analyzer_diagnostic.category-StyleCop.CSharp.MaintainabilityRules.severity = none \ No newline at end of file diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml new file mode 100644 index 0000000..279bcc5 --- /dev/null +++ b/.github/workflows/ci.yml @@ -0,0 +1,25 @@ +name: CI + +on: + push: + branches: [ main, avalonia ] + pull_request: + +jobs: + build: + runs-on: windows-latest + steps: + - uses: actions/checkout@v4 + with: { fetch-depth: 0 } + + - uses: actions/setup-dotnet@v4 + with: + dotnet-version: '10.0.x' + cache: true + cache-dependency-path: packages.lock.json + + - name: Build Debug + run: ./build.bat debug + + - name: Build Optimized Debug + run: ./build.bat optimized \ No newline at end of file diff --git a/.github/workflows/dev-build.yml b/.github/workflows/dev-build.yml index 14fa797..fa18cb6 100644 --- a/.github/workflows/dev-build.yml +++ b/.github/workflows/dev-build.yml @@ -2,8 +2,7 @@ name: Dev Build on: push: - branches: [avalonia] - paths: ['**.cs', '**.csproj', '**.axaml', '**.xaml'] + branches: [ main, avalonia ] workflow_dispatch: permissions: @@ -12,43 +11,42 @@ permissions: jobs: build: runs-on: windows-latest - steps: - uses: actions/checkout@v4 - with: - submodules: recursive + with: { fetch-depth: 0, submodules: recursive } - uses: actions/setup-dotnet@v4 with: dotnet-version: '10.0.x' - include-prerelease: true - - - name: Build & Publish - run: | - $ver = "0.0.${{ github.run_number }}" - - dotnet publish LMP.csproj ` - -c Release -r win-x64 --self-contained true ` - -p:Version=$ver -p:PublishReadyToRun=true ` - -p:DebugType=None -p:DebugSymbols=false ` - -o ./publish - - # Cleanup - Remove-Item ./publish/*.xml, ./publish/*.pdb -ErrorAction SilentlyContinue - - # Archive - cd publish - 7z a -t7z -mx=9 "../LMP-Build-${{ github.run_number }}.7z" . - - - name: Release + cache: true + cache-dependency-path: packages.lock.json + + - name: Build Debug + run: ./build.bat debug + + - name: Build Optimized Debug + run: ./build.bat optimized + + - name: Publish Release + run: ./build.bat publish + + - name: Upload Artifacts + uses: actions/upload-artifact@v4 + with: + name: LMP-Debug + path: bin/Debug/net10.0/ + + - name: Upload Optimized + uses: actions/upload-artifact@v4 + with: + name: LMP-Optimized-Debug + path: bin/Debug/net10.0/ + + - name: Create Pre-release uses: softprops/action-gh-release@v2 + if: github.ref == 'refs/heads/main' with: - tag_name: dev-${{ github.run_number }} + tag_name: v1.0.${{ github.run_number }} name: "Dev Build #${{ github.run_number }}" prerelease: true - files: ./*.7z - body: | - **Branch:** `${{ github.ref_name }}` - **Commit:** `${{ github.sha }}` - - Extract and run `LMP.exe` \ No newline at end of file + files: LMP-*.7z \ No newline at end of file diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml new file mode 100644 index 0000000..494fb63 --- /dev/null +++ b/.github/workflows/release.yml @@ -0,0 +1,22 @@ +name: Release + +on: + release: + types: [created] + +jobs: + publish: + runs-on: windows-latest + steps: + - uses: actions/checkout@v4 + with: { fetch-depth: 0 } + + - uses: actions/setup-dotnet@v4 + with: { dotnet-version: '10.0.x', cache: true, cache-dependency-path: packages.lock.json } + + - run: ./build.bat publish + + - name: Upload Release Asset + uses: softprops/action-gh-release@v2 + with: + files: LMP-*.7z \ No newline at end of file diff --git a/.gitignore b/.gitignore index b386164..c3a43b5 100644 --- a/.gitignore +++ b/.gitignore @@ -8,6 +8,7 @@ appsecrets.*.json [Oo]bj/ # Артефакты публикации publish/ +publish-dev/ ## --- [ Visual Studio ] --- .vs/ diff --git a/.vscode/launch.json b/.vscode/launch.json index 22228f1..84fd276 100644 --- a/.vscode/launch.json +++ b/.vscode/launch.json @@ -1,23 +1,46 @@ { - "version": "0.2.0", - "configurations": [ - { - "name": "🎵 Launch LMP (Debug)", - "type": "coreclr", - "request": "launch", - "preLaunchTask": "build", - "program": "${workspaceFolder}/bin/Debug/net10.0/LMP.dll", - "args": [], - "cwd": "${workspaceFolder}", - "stopAtEntry": false, - "console": "internalConsole", - "logging": { - "moduleLoad": false - }, - "env": { - "ASPNETCORE_ENVIRONMENT": "Development", - "DOTNET_MODERN_CONTROLS": "1" - } - } - ] + "version": "0.2.0", + "configurations": [ + { + "name": "🎵 Debug (quiet)", + "type": "coreclr", + "request": "launch", + "preLaunchTask": "build: debug", + "program": "${workspaceFolder}/bin/Debug/net10.0/LMP.dll", + "args": [], + "cwd": "${workspaceFolder}", + "console": "internalConsole", + + "justMyCode": true, + "suppressJITOptimizations": true, + + "logging": { + "moduleLoad": false, + "exceptions": false, + "programOutput": true + }, + + "symbolOptions": { + "searchMicrosoftSymbolServer": false, + "searchNuGetOrgSymbolServer": false, + "searchPaths": [ + "${workspaceFolder}/bin/Debug/net10.0" + ] + } + }, + + { + "name": "🎵 Watch (Hot Reload) + Attach", + "type": "coreclr", + "request": "attach", + "preLaunchTask": "watch", + "processId": "${command:pickProcess}", + + "justMyCode": true, + "logging": { + "moduleLoad": false, + "exceptions": false + } + } + ] } \ No newline at end of file diff --git a/.vscode/settings.json b/.vscode/settings.json deleted file mode 100644 index 5557e75..0000000 --- a/.vscode/settings.json +++ /dev/null @@ -1,3 +0,0 @@ -{ - "axaml.selectedSolution": "d:\\Projects\\CS\\LiteYTMusicPlayer\\LMP.sln" -} \ No newline at end of file diff --git a/.vscode/tasks.json b/.vscode/tasks.json index 7b28130..f3a7f48 100644 --- a/.vscode/tasks.json +++ b/.vscode/tasks.json @@ -2,16 +2,36 @@ "version": "2.0.0", "tasks": [ { - "label": "build", - "command": "dotnet", - "type": "process", - "args": [ - "build", - "${workspaceFolder}/LMP.csproj", - "/property:GenerateFullPaths=true", - "/consoleloggerparameters:NoSummary" - ], + "label": "build: debug", + "type": "shell", + "command": "cmd.exe", + "args": ["/c", "${workspaceFolder}\\build.bat", "debug", "nopause"], + "options": { "cwd": "${workspaceFolder}" }, + "group": { "kind": "build", "isDefault": true }, + "problemMatcher": "$msCompile" + }, + { + "label": "build: optimized", + "type": "shell", + "command": "cmd.exe", + "args": ["/c", "${workspaceFolder}\\build.bat", "optimized", "nopause"], + "options": { "cwd": "${workspaceFolder}" }, + "group": "build", "problemMatcher": "$msCompile" + }, + { + "label": "watch", + "type": "shell", + "command": "dotnet", + "args": ["watch", "run", "--project", "LMP.csproj", "--configuration", "Debug"], + "options": { "cwd": "${workspaceFolder}" }, + "isBackground": true, + "problemMatcher": "$msCompile", + "presentation": { + "reveal": "always", + "panel": "dedicated", + "clear": true + } } ] } \ No newline at end of file diff --git a/App.axaml b/App.axaml index f14630b..be84cd9 100644 --- a/App.axaml +++ b/App.axaml @@ -14,14 +14,14 @@ - + - - + + diff --git a/App.axaml.cs b/App.axaml.cs index ecc51a1..8f6f819 100644 --- a/App.axaml.cs +++ b/App.axaml.cs @@ -1,15 +1,26 @@ using Avalonia; using Avalonia.Controls.ApplicationLifetimes; using Avalonia.Markup.Xaml; +using Avalonia.Threading; using Microsoft.Extensions.DependencyInjection; using LMP.Features.Shell; using LMP.Core.Services; +using LMP.Core.Models; using AsyncImageLoader; +using LMP.Core.Audio; +using LMP.Core.Audio.Cache; +using System.Diagnostics; + +#if DEBUG +using LMP.Tests; +#endif namespace LMP; public partial class App : Application { + private SplashWindow? _splash; + public override void Initialize() { AvaloniaXamlLoader.Load(this); @@ -21,109 +32,185 @@ public override void OnFrameworkInitializationCompleted() if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop) { - // 0. Load theme BEFORE any UI is created + // ═══ ЭТАП 1: Тема (мгновенно) ═══ var themeManager = Program.Services.GetRequiredService(); themeManager.LoadAndApplyThemeOnStartup(); - // 1. Get library service (don't await initialization here!) - var library = Program.Services.GetRequiredService(); + // ═══ ЭТАП 2: Локализация (мгновенно) ═══ + var bootstrap = Program.Services.GetRequiredService(); + LocalizationService.Instance.Initialize(bootstrap.LanguageCode); + Log.Info($"Localization: {bootstrap.LanguageCode}"); + + // ═══ ЭТАП 3: Splash Screen ═══ + _splash = new SplashWindow(); + desktop.MainWindow = _splash; + _splash.Show(); - var registry = Program.Services.GetRequiredService(); - var cacheManager = Program.Services.GetRequiredService(); + // ═══ КРИТИЧНО: Даём UI-потоку отрисовать splash ═══ + // Используем BeginInvoke чтобы вернуть управление event loop + Dispatcher.UIThread.Post(() => + { + _ = InitializeAppAsync(desktop); + }, DispatcherPriority.Background); + } + + base.OnFrameworkInitializationCompleted(); + } + + private async Task InitializeAppAsync(IClassicDesktopStyleApplicationLifetime desktop) + { + var stopwatch = Stopwatch.StartNew(); + var L = LocalizationService.Instance; + + try + { + await Task.Delay(100); - // Передаем CacheManager в Registry ДО начала загрузки данных (HydrateAsync) - registry.CacheManager = cacheManager; + _splash?.SetProgress(5); + _splash?.UpdateStatus(L["Splash_Initializing"]); - // 2. Initialize localization with default, will update after DB init - LocalizationService.Instance.Initialize("en"); + // ─── Audio Cache ─── + _splash?.UpdateStatus(L["Splash_InitAudioCache"]); + var audioCacheManager = await Task.Run(() => + Program.Services.GetRequiredService()); + AudioSourceFactory.InitializeGlobalCache(audioCacheManager); + _splash?.SetProgress(20); - // 3. Start Memory Monitor + // ─── Memory Monitor ─── MemoryDiagnostics.Instance.OnMemoryWarning += Log.Warn; MemoryDiagnostics.Instance.WarningThresholdMb = 400; MemoryDiagnostics.Instance.CriticalThresholdMb = 450; + _splash?.SetProgress(25); - // 4. Create UI FIRST - var mainWindowVM = Program.Services.GetRequiredService(); - desktop.MainWindow = new MainWindow - { - DataContext = mainWindowVM - }; + // ─── Library Service ─── + _splash?.UpdateStatus(L["Splash_LoadingLibrary"]); + var library = Program.Services.GetRequiredService(); + await Task.Run(async () => await library.InitializeAsync()); + _splash?.SetProgress(45); - Log.Info("Main window created and shown."); + // ═══ СИНХРОНИЗАЦИЯ ЯЗЫКА ═══ + // Bootstrap = источник правды при старте. + // Если в БД другой язык И это НЕ дефолтный "en" — пользователь менял язык. + // Если в БД "en", а bootstrap другой — это первый запуск, сохраняем bootstrap в БД. + var savedLang = library.Settings.LanguageCode; + var currentLang = L.CurrentLanguageCode; - var imageCache = Program.Services.GetRequiredService(); + if (!string.IsNullOrEmpty(savedLang) && savedLang != currentLang) + { + // В БД есть ЯВНО сохранённый язык, отличный от текущего. + // Нужно понять: это пользователь менял или дефолт? + // + // Если savedLang == "en" и currentLang != "en": + // → Первый запуск, БД имеет дефолт, bootstrap определил правильный — сохраняем в БД + // Если savedLang != "en" и savedLang != currentLang: + // → Пользователь менял язык, но bootstrap отстал — обновляем bootstrap + + if (savedLang == "en" && currentLang != "en") + { + // Первый запуск: bootstrap определил язык, БД пустая → пишем в БД + Log.Info($"First run: saving auto-detected '{currentLang}' to DB (was default 'en')"); + library.Settings.LanguageCode = currentLang; + } + else if (savedLang != "en") + { + // Пользователь ранее сменил язык в настройках → применяем из БД + Log.Info($"Applying saved language from DB: {savedLang}"); + L.CurrentLanguage = savedLang; + } + } + _splash?.SetProgress(50); + + // ─── Image Cache ─── + _splash?.UpdateStatus(L["Splash_PreparingImages"]); + var imageCache = await Task.Run(() => + Program.Services.GetRequiredService()); ImageLoader.AsyncImageLoader = new CachedImageLoader(imageCache); + _splash?.SetProgress(60); - // 5. Initialize library and other services IN BACKGROUND - _ = InitializeServicesAsync(library); + // ─── YouTube Provider ─── + _splash?.UpdateStatus(L["Splash_ConnectingYouTube"]); + var youtube = Program.Services.GetRequiredService(); + await Task.Run(async () => await youtube.InitializeAsync()); + _splash?.SetProgress(80); - // 6. Cleanup on shutdown - desktop.ShutdownRequested += async (_, e) => + // ─── Create Main Window ─── + _splash?.UpdateStatus(L["Splash_BuildingInterface"]); + MainWindow? mainWindow = null; + await Dispatcher.UIThread.InvokeAsync(() => + { + var mainWindowVM = Program.Services.GetRequiredService(); + mainWindow = new MainWindow { DataContext = mainWindowVM }; + }); + _splash?.SetProgress(95); + + // ─── Ready! ─── + _splash?.UpdateStatus(L["Splash_Ready"]); + _splash?.SetProgress(100); + + // ═══ МИНИМАЛЬНОЕ ВРЕМЯ ПОКАЗА ═══ + var elapsed = stopwatch.ElapsedMilliseconds; + var minTime = G.Build.MinSplashTimeMs; + var remaining = minTime - (int)elapsed; + + if (remaining > 0) + { + Log.Info($"[Splash] Waiting additional {remaining}ms"); + await Task.Delay(remaining); + } + + // ─── Switch Windows ─── + await Dispatcher.UIThread.InvokeAsync(() => + { + desktop.MainWindow = mainWindow; + mainWindow?.Show(); + _splash?.Close(); + _splash = null; + }); + + Log.Info($"Main window ready. Total splash time: {stopwatch.ElapsedMilliseconds}ms"); + + // ─── Shutdown Handler ─── + desktop.ShutdownRequested += async (_, _) => { try { - // Логируем финальный отчёт MemoryDiagnostics.LogReport(); - MemoryDiagnostics.Instance.Dispose(); + await audioCacheManager.DisposeAsync(); await library.DisposeAsync(); } catch (Exception ex) { - Log.Error($"Shutdown cleanup error: {ex.Message}"); + Log.Error($"Shutdown error: {ex.Message}"); } }; #if DEBUG - desktop.MainWindow.AttachDevTools(); + desktop.MainWindow!.AttachDevTools(); - // Debug window - desktop.MainWindow.KeyDown += (s, e) => + await Dispatcher.UIThread.InvokeAsync(() => { - if (e.Key == Avalonia.Input.Key.F9) - { - new Features.Debug.DebugWindow().Show(); - } - }; + mainWindow?.KeyDown += (s, e) => + { + if (e.Key == Avalonia.Input.Key.F9) + new Features.Debug.DebugWindow().Show(); + + if (e.Key == Avalonia.Input.Key.F10) + _ = Task.Run(ManualTests.RunAllAsync); + }; + }); #endif } - - base.OnFrameworkInitializationCompleted(); - } - - private static async Task InitializeServicesAsync(LibraryService library) - { - try + catch (Exception ex) { - // Initialize database (this can take time on first run) - await library.InitializeAsync(); + Log.Fatal($"Initialization failed: {ex.Message}\n{ex.StackTrace}"); - // Update localization with saved language - var savedLang = library.Settings.LanguageCode; - if (!string.IsNullOrEmpty(savedLang) && savedLang != "en") + await Dispatcher.UIThread.InvokeAsync(() => { - Log.Info($"Using saved language: {savedLang}"); - LocalizationService.Instance.CurrentLanguage = savedLang; - } - - // Initialize YouTube - var youtube = Program.Services.GetRequiredService(); - await youtube.InitializeAsync(); - - // Sync liked tracks if authenticated - var musicLibraryManager = Program.Services.GetRequiredService(); + _splash?.UpdateStatus(string.Format(L["Splash_Error"], ex.Message)); + }); -#if DEBUG - var dialogService = Program.Services.GetRequiredService(); - var canSync = await dialogService.ConfirmAsync("Debug", "Sync liked tracks?", "Yes", "No"); - if (canSync) await musicLibraryManager.SyncLikedTracksAsync(); -#else - await musicLibraryManager.SyncLikedTracksAsync(); -#endif - } - catch (Exception ex) - { - Log.Error($"Background initialization failed: {ex.Message}"); + await Task.Delay(3000); } } } \ No newline at end of file diff --git a/Assets/Localization/en.json b/Assets/Localization/en.json index 142724c..e8bbf3e 100644 --- a/Assets/Localization/en.json +++ b/Assets/Localization/en.json @@ -12,6 +12,7 @@ "Common_Search": "Search", "Common_Minutes": "min", "Common_Files": "files", + "Common_OpenGitHub": "Open GitHub repository", "Window_Minimize": "Minimize", "Window_Maximize": "Maximize", @@ -26,6 +27,7 @@ "Nav_Queue": "Queue", "Nav_Settings": "Settings", "Nav_PleaseWait": "Please wait...", + "Nav_Notifications": "Notifications", "Filter_Placeholder": "Filter tracks...", "Filter_All": "All", @@ -68,6 +70,54 @@ "Search_NoLocalFiles": "No local files in library. Download some tracks or add local files.", "Search_OfflineMode": "Searching local library only", + "VolumeCurve_Linear": "Linear", + "VolumeCurve_Quadratic": "Quadratic (Recommended)", + "VolumeCurve_Logarithmic": "Logarithmic", + "VolumeCurve_Cubic": "Cubic", + "VolumeCurve_SpeedOfLight": "Speed of Light ⚡", + + "Settings_VolumeCurve": "Volume Curve", + "Settings_VolumeCurve_Desc": "How volume slider maps to actual loudness", + + "Settings_VolumeBoost": "Volume Boost", + "Settings_VolumeBoost_Tooltip": "Allow volume above 100%. When disabled, higher max volume only increases precision for fine-tuning.", + + "Settings_SmoothVolume": "Smooth Volume Changes", + "Settings_SmoothVolume_Tooltip": "Fade volume instead of instant changes. Prevents audio pops and clicks.", + + "Settings_AudioNormalization": "Audio Normalization", + "Settings_AudioNormalization_Tooltip": "Automatically balance volume levels between different tracks. May affect dynamics.", + + "Audio_ErrorSection": "🔔 Error Notifications", + "Audio_VolumeSection": "🔊 Volume", + "Audio_ProcessingSection": "⚙️ Processing", + "Audio_QualitySection": "🎵 Quality", + + "Settings_ErrorBehavior": "Playback Error Behavior", + "Settings_ErrorBehaviorDesc": "How to react when a track fails to play (stream unavailable, download error). Bot detection always shows a dialog.", + "Settings_ErrorBehavior_Dialog": "Show dialog and pause", + "Settings_ErrorBehavior_ToastAndSkip": "Show notification and skip", + "Settings_ErrorBehavior_Ignore": "Skip silently", + "Settings_PlayErrorSound": "Error Sound", + "Settings_PlayErrorSoundDesc": "Play a sound when a playback error occurs.", + + "Settings_RememberFormat": "Remember Track Format", + "Settings_RememberFormatDesc": "Save preferred audio format per track", + + "Settings_AudioQualityDesc": "Preferred streaming quality when available", + + "Settings_SmoothLoading": "Smooth Loading Animations", + "Settings_SmoothLoadingDesc": "Show smooth skeleton loaders instead of instant content", + + "General_AutoPasteDesc": "Automatically play when YouTube URL is pasted", + "General_DiscordDesc": "Show currently playing track in Discord status", + + "Settings_SearchCache": "Cache Search Results", + "Settings_SearchCacheDesc": "Store search results for faster repeated searches", + "Settings_SearchCacheTtl": "Cache Duration", + + "Settings_Playback": "Playback", + "Settings_Title": "Settings", "Settings_Account_Language": "Account & Language", "Settings_Network": "Network & Streaming", @@ -99,8 +149,6 @@ "Settings_Audio": "Audio", "Settings_AudioQuality": "Quality", - "Settings_AudioQualityDesc": "Preferred audio format/bitrate.", - "Settings_RememberFormat": "Remember format per track", "Settings_SearchBatchSize": "Search batch size", "Settings_SearchBatchSizeDesc": "Number of tracks to load when scrolling in search results", "Settings_UserAgentDesc": "Insert the User-Agent from your browser to prevent cookie expiration.", @@ -259,6 +307,10 @@ "Input_Watermark": "Enter text...", "Input_PasteHere": "Paste here...", + "Dialog_BotDetection_Title": "Temporary Slowdown", + "Dialog_BotDetection_Message": "YouTube detected unusual activity and temporarily limited playback.\n\nThis is normal after playing many tracks quickly.", + "Dialog_BotDetection_Hint": "Playback resumes automatically. Don't close the player.", + "Sync_Action": "Import", "Sync_DuplicateName": "Imported", "Sync_ConfigureUrlFirst": "Please set a Channel URL in settings first.", @@ -310,5 +362,74 @@ "Delete_LocalOnly": "Remove from Library", "Delete_LocalOnlyHint": "Keeps the playlist on YouTube", "Delete_Everywhere": "Delete Everywhere", - "Delete_EverywhereHint": "Removes from YouTube account too" + "Delete_EverywhereHint": "Removes from YouTube account too", + + "Notification_JustNow": "Just now", + "Notification_MinutesAgo": "{0} min ago", + "Notification_HoursAgo": "{0}h ago", + "Notification_MarkAllRead": "Mark all as read", + "Notification_Clear": "Clear", + "Notification_NoNotifications": "No notifications", + "Notification_ViewDetails": "View details", + "Notification_HideDetails": "Hide details", + "Notification_CopyError": "Copy error", + "Notification_CopyTrackUrl": "Copy track link", + + "Attempt_Success": "Success", + "Attempt_Failed": "Failed", + "Attempt_Trying": "Trying {0}...", + + "Recommendation_Login": "Go to Settings → Account and sign in with YouTube cookies.", + "Recommendation_Login_AgeRestricted": "This video is age-restricted. Sign in via Settings → Account.", + "Recommendation_MembersOnly": "This content is for channel members only.", + "Recommendation_ChangeClient": "Try changing the YouTube Client in Settings → Network.", + "Recommendation_UseVPN": "This content is region-blocked. Try using a VPN or proxy.", + "Recommendation_Private": "This is a private video. Ask the owner to make it public.", + "Recommendation_Removed": "This video has been removed from YouTube.", + "Recommendation_Payment": "This content requires a YouTube Premium subscription.", + "Recommendation_LiveStream": "Live streams are not yet supported. Try again after the stream ends.", + "Recommendation_CheckNetwork": "Check your internet connection and try again.", + "Recommendation_ContactDev": "If this keeps happening, please contact the developer.", + "Recommendation_Login_403": "Sign in to YouTube via Settings → Account to access this content.", + "Recommendation_AllClientsFailed_Auth": "All clients failed. Try changing the client in Settings → Network, or contact the developer.", + "Notification_Resize": "Drag to resize panel", + + "Error_CopyDetails": "Copy Details", + + "Error_BotDetection_Message": "YouTube rate limit active. Please wait {0}.", + + "Error_Stream_HlsForbidden": "HLS stream blocked (403). Please contact the developer.", + "Error_Stream_Forbidden": "Track access forbidden (403). Try another track or contact the developer.", + "Error_Stream_AllClientsFailed": "Could not access track through any method. Please contact the developer.", + "Error_Stream_RegionBlocked": "Track is not available in your region.", + "Error_Stream_AgeRestricted": "Track is age-restricted. Please sign in to YouTube.", + "Error_Stream_LiveStream": "Live streams are not supported yet.", + "Error_Stream_Private": "This is a private video.", + "Error_Stream_Removed": "Video has been removed.", + "Error_Stream_PaymentRequired": "This content requires a subscription.", + "Error_Stream_Unknown": "Track unavailable. Please contact the developer.", + "Error_Stream_Generic": "Could not play track. Please contact the developer.", + "Error_Login_Required": "This content requires signing in to YouTube. Please go to Settings → Account and add your cookies.", + "Error_Login_AgeRestricted": "This video is age-restricted. Please sign in to YouTube in Settings → Account.", + "Error_Login_Private": "This is a private video. Access requires authorization.", + "Error_Login_MembersOnly": "This content is available only to channel members.", + "Error_Playback_Title": "Playback Error", + "Error_StreamUnavailable_Title": "Stream Unavailable", + "Error_Stream_UmpFormat": "YouTube returned encrypted format. Please contact the developer.", + "Error_Stream_MaxRetries": "Failed to download stream after multiple attempts.", + "Error_Stream_Network": "Network error. Please check your connection.", + + "Splash_Initializing": "Initializing...", + "Splash_InitAudioCache": "Initializing audio cache...", + "Splash_LoadingLibrary": "Loading library...", + "Splash_PreparingImages": "Preparing images...", + "Splash_ConnectingYouTube": "Connecting to YouTube...", + "Splash_BuildingInterface": "Building interface...", + "Splash_Ready": "Ready!", + "Splash_Commits": "{0} commits", + "Splash_Error": "Error: {0}", + + "Build_Version": "v{0}", + "Build_VersionDev": "v{0}-dev", + "Build_CommitsCount": "{0} commits" } \ No newline at end of file diff --git a/Assets/Localization/ru.json b/Assets/Localization/ru.json index f45dd46..7490d26 100644 --- a/Assets/Localization/ru.json +++ b/Assets/Localization/ru.json @@ -12,6 +12,7 @@ "Common_Search": "Поиск", "Common_Minutes": "мин", "Common_Files": "файлов", + "Common_OpenGitHub": "Открыть репозиторий GitHub", "Window_Minimize": "Свернуть", "Window_Maximize": "Развернуть", @@ -26,6 +27,7 @@ "Nav_Queue": "Очередь", "Nav_Settings": "Настройки", "Nav_PleaseWait": "Подождите...", + "Nav_Notifications": "Уведомления", "Home_Greeting_Morning": "Доброе утро", "Home_Greeting_Afternoon": "Добрый день", @@ -68,6 +70,51 @@ "Search_NoLocalFiles": "В библиотеке нет локальных файлов. Скачайте треки или добавьте локальные файлы.", "Search_OfflineMode": "Поиск только по локальной библиотеке", + "VolumeCurve_Linear": "Линейная", + "VolumeCurve_Quadratic": "Квадратичная (Рекомендуется)", + "VolumeCurve_Logarithmic": "Логарифмическая", + "VolumeCurve_Cubic": "Кубическая", + "VolumeCurve_SpeedOfLight": "Скорость света ⚡", + + "Settings_VolumeCurve": "Кривая громкости", + "Settings_VolumeCurve_Desc": "Как слайдер громкости соотносится с реальной громкостью", + + "Settings_VolumeBoost": "Усиление громкости", + "Settings_VolumeBoost_Tooltip": "Разрешить громкость выше 100%. Если выключено, больший максимум только увеличивает точность настройки.", + + "Settings_SmoothVolume": "Плавное изменение громкости", + "Settings_SmoothVolume_Tooltip": "Плавный переход вместо мгновенного изменения. Предотвращает щелчки и артефакты.", + + "Settings_AudioNormalization": "Нормализация звука", + "Settings_AudioNormalization_Tooltip": "Автоматически выравнивать громкость между треками. Может влиять на динамику.", + + "Audio_ErrorSection": "🔔 Уведомления об ошибках", + "Audio_VolumeSection": "🔊 Громкость", + "Audio_ProcessingSection": "⚙️ Обработка", + "Audio_QualitySection": "🎵 Качество", + + "Settings_ErrorBehavior": "Поведение при ошибке воспроизведения", + "Settings_ErrorBehaviorDesc": "Реакция на ошибки воспроизведения (стрим недоступен, ошибка загрузки). Обнаружение бота всегда показывает диалог.", + "Settings_ErrorBehavior_Dialog": "Показать диалог и поставить на паузу", + "Settings_ErrorBehavior_ToastAndSkip": "Показать уведомление и пропустить", + "Settings_ErrorBehavior_Ignore": "Пропустить без уведомления", + "Settings_PlayErrorSound": "Звук ошибки", + "Settings_PlayErrorSoundDesc": "Воспроизводить звук при ошибке воспроизведения.", + + "Settings_RememberFormatDesc": "Сохранять предпочитаемый формат для каждого трека", + + "Settings_SmoothLoading": "Плавные анимации загрузки", + "Settings_SmoothLoadingDesc": "Показывать плавные скелетоны вместо мгновенного появления", + + "General_AutoPasteDesc": "Автоматически воспроизводить при вставке YouTube ссылки", + "General_DiscordDesc": "Показывать текущий трек в статусе Discord", + + "Settings_SearchCache": "Кэшировать результаты поиска", + "Settings_SearchCacheDesc": "Хранить результаты для быстрого повторного поиска", + "Settings_SearchCacheTtl": "Время хранения", + + "Settings_Playback": "Воспроизведение", + "Settings_Title": "Настройки", "Settings_Account_Language": "Аккаунт и язык", "Settings_Network": "Сеть и стриминг", @@ -261,6 +308,10 @@ "Input_Watermark": "Введите текст...", "Input_PasteHere": "Вставьте сюда...", + "Dialog_BotDetection_Title": "Временное ограничение", + "Dialog_BotDetection_Message": "YouTube обнаружил необычную активность и временно ограничил воспроизведение.\n\nЭто нормально после быстрого переключения треков.", + "Dialog_BotDetection_Hint": "Воспроизведение возобновится автоматически. Не закрывайте плеер.", + "Sync_Action": "Импорт", "Sync_DuplicateName": "Импортировано", "Sync_ConfigureUrlFirst": "Сначала укажите ссылку на канал в настройках.", @@ -312,5 +363,74 @@ "Delete_LocalOnly": "Только из библиотеки", "Delete_LocalOnlyHint": "Плейлист останется на YouTube", "Delete_Everywhere": "Удалить везде", - "Delete_EverywhereHint": "Удалить также из аккаунта YouTube" + "Delete_EverywhereHint": "Удалить также из аккаунта YouTube", + + "Notification_JustNow": "Только что", + "Notification_MinutesAgo": "{0} мин назад", + "Notification_HoursAgo": "{0}ч назад", + "Notification_MarkAllRead": "Отметить всё прочитанным", + "Notification_Clear": "Очистить", + "Notification_NoNotifications": "Нет уведомлений", + "Notification_ViewDetails": "Подробности", + "Notification_HideDetails": "Скрыть подробности", + "Notification_CopyError": "Копировать ошибку", + "Notification_CopyTrackUrl": "Копировать ссылку на трек", + + "Recommendation_Login": "Перейдите в Настройки → Аккаунт и войдите через cookies YouTube.", + "Recommendation_Login_AgeRestricted": "Видео имеет возрастные ограничения. Войдите через Настройки → Аккаунт.", + "Recommendation_MembersOnly": "Этот контент доступен только подписчикам канала.", + "Recommendation_ChangeClient": "Попробуйте сменить клиент YouTube в Настройки → Сеть.", + "Recommendation_UseVPN": "Контент заблокирован в вашем регионе. Попробуйте использовать VPN или прокси.", + "Recommendation_Private": "Это приватное видео. Попросите владельца сделать его публичным.", + "Recommendation_Removed": "Это видео удалено с YouTube.", + "Recommendation_Payment": "Для этого контента нужна подписка YouTube Premium.", + "Recommendation_LiveStream": "Прямые трансляции пока не поддерживаются. Попробуйте после окончания стрима.", + "Recommendation_CheckNetwork": "Проверьте подключение к интернету и попробуйте снова.", + "Recommendation_ContactDev": "Если ошибка повторяется, обратитесь к разработчику.", + "Recommendation_Login_403": "Войдите в YouTube через Настройки → Аккаунт для доступа к этому контенту.", + "Recommendation_AllClientsFailed_Auth": "Все клиенты не сработали. Попробуйте сменить клиент в Настройки → Сеть или обратитесь к разработчику.", + "Notification_Resize": "Потяните для изменения размера", + + "Attempt_Success": "Успешно", + "Attempt_Failed": "Ошибка", + "Attempt_Trying": "Попытка {0}...", + + "Error_CopyDetails": "Копировать детали", + + "Error_BotDetection_Message": "YouTube ограничил доступ. Подождите {0}.", + + "Error_Stream_HlsForbidden": "HLS поток заблокирован (403). Обратитесь к разработчику.", + "Error_Stream_Forbidden": "Доступ к треку запрещён (403). Попробуйте другой трек или обратитесь к разработчику.", + "Error_Stream_AllClientsFailed": "Не удалось получить доступ к треку. Обратитесь к разработчику.", + "Error_Stream_RegionBlocked": "Трек недоступен в вашем регионе.", + "Error_Stream_AgeRestricted": "Трек имеет возрастные ограничения. Войдите в аккаунт YouTube.", + "Error_Stream_LiveStream": "Прямые трансляции пока не поддерживаются.", + "Error_Stream_Private": "Это приватное видео.", + "Error_Stream_Removed": "Видео было удалено.", + "Error_Stream_PaymentRequired": "Для этого контента требуется подписка.", + "Error_Stream_Unknown": "Трек недоступен. Обратитесь к разработчику.", + "Error_Stream_Generic": "Не удалось воспроизвести трек. Обратитесь к разработчику.", + "Error_Login_Required": "Для этого контента требуется вход в YouTube. Перейдите в Настройки → Аккаунт и добавьте cookies.", + "Error_Login_AgeRestricted": "Это видео имеет возрастные ограничения. Войдите в аккаунт YouTube в Настройки → Аккаунт.", + "Error_Login_Private": "Это приватное видео. Требуется авторизация.", + "Error_Login_MembersOnly": "Этот контент доступен только подписчикам канала.", + "Error_Playback_Title": "Ошибка воспроизведения", + "Error_StreamUnavailable_Title": "Стрим недоступен", + "Error_Stream_UmpFormat": "YouTube вернул зашифрованный формат. Обратитесь к разработчику.", + "Error_Stream_MaxRetries": "Не удалось загрузить поток после нескольких попыток.", + "Error_Stream_Network": "Ошибка сети. Проверьте подключение.", + + "Splash_Initializing": "Инициализация...", + "Splash_InitAudioCache": "Инициализация аудио кэша...", + "Splash_LoadingLibrary": "Загрузка библиотеки...", + "Splash_PreparingImages": "Подготовка изображений...", + "Splash_ConnectingYouTube": "Подключение к YouTube...", + "Splash_BuildingInterface": "Создание интерфейса...", + "Splash_Ready": "Готово!", + "Splash_Commits": "{0} коммитов", + "Splash_Error": "Ошибка: {0}", + + "Build_Version": "v{0}", + "Build_VersionDev": "v{0}-dev", + "Build_CommitsCount": "{0} коммитов" } \ No newline at end of file diff --git a/Assets/app.ico b/Assets/app.ico new file mode 100644 index 0000000..063d970 Binary files /dev/null and b/Assets/app.ico differ diff --git a/Assets/app.svg b/Assets/app.svg new file mode 100644 index 0000000..56f5bae --- /dev/null +++ b/Assets/app.svg @@ -0,0 +1,13 @@ + + + + + + + + + + + \ No newline at end of file diff --git a/Assets/avalonia-logo.ico b/Assets/avalonia-logo.ico deleted file mode 100644 index f7da8bb..0000000 Binary files a/Assets/avalonia-logo.ico and /dev/null differ diff --git a/Core/Audio/AudioConstants.cs b/Core/Audio/AudioConstants.cs new file mode 100644 index 0000000..f3601cd --- /dev/null +++ b/Core/Audio/AudioConstants.cs @@ -0,0 +1,230 @@ +namespace LMP.Core.Audio; + +/// +/// Централизованные константы аудио системы. +/// Единственный источник истины для всех числовых параметров. +/// +public static class AudioConstants +{ + // ═══════════════════════════════════════════════════════ + // CHUNK SETTINGS — Управление сегментацией данных + // ═══════════════════════════════════════════════════════ + + /// Размер чанка для кэширования (64KB = оптимум для HTTP Range + минимум аллокаций). + public const int ChunkSize = 64 * 1024; + + /// Максимум чанков в RAM (32 × 64KB = 2MB RAM на трек). + public const int MaxRamChunks = 32; + + /// Расстояние от текущей позиции для eviction чанков из RAM. + public const int RamEvictionDistance = 10; + + // ═══════════════════════════════════════════════════════ + // PRELOAD SETTINGS — Стратегия упреждающей загрузки + // ═══════════════════════════════════════════════════════ + + /// Чанков загружать перед стартом воспроизведения (300ms @ 128kbps). + public const int InitialChunksToLoad = 3; + + /// Чанков держать впереди от текущей позиции (adaptive buffering). + public const int PreloadAheadChunks = 4; + + /// Чанков загружать при seek (instant seek UX). + public const int SeekPreloadChunks = 2; + + /// Интервал проверки preload loop (ms). + public const int PreloadIntervalMs = 1000; + + /// Максимум параллельных загрузок чанков (баланс скорость/RAM). + public const int MaxConcurrentDownloads = 3; + + // ═══════════════════════════════════════════════════════ + // DOWNLOAD TIMEOUTS — HTTP операции + // ═══════════════════════════════════════════════════════ + + /// Таймаут загрузки одного чанка (15s = mobile-friendly). + public const int DownloadTimeoutMs = 15_000; + + /// Таймаут ожидания слота загрузки (500ms = non-blocking). + public const int DownloadSlotTimeoutMs = 500; + + // ═══════════════════════════════════════════════════════ + // BACKGROUND DOWNLOAD LIMITS — Экономия сети + // ═══════════════════════════════════════════════════════ + + /// Циклов простоя перед фоновой докачкой (5 × 1s = 5s idle). + public const int BackgroundFillIdleCycles = 5; + + /// Пауза между фоновыми загрузками (5s = gentle network usage). + public const int BackgroundFillIntervalMs = 5_000; + + /// Максимум чанков для фоновой докачки за сессию (0 = unlimited). + public const int MaxBackgroundChunksPerSession = 50; + + /// Минимум буфера впереди для начала фоновой докачки. + public const int MinBufferAheadForBackgroundFill = 6; + + // ═══════════════════════════════════════════════════════ + // DECODER SETTINGS — Параметры декодирования + // ═══════════════════════════════════════════════════════ + + /// Sample rate по умолчанию (48kHz = industry standard). + public const int DefaultSampleRate = 48_000; + + /// Количество каналов по умолчанию (stereo). + public const int DefaultChannels = 2; + + /// Буфер декодирования (samples, не байты). + public const int DecoderBufferFrames = 8192; + + /// Кадров пропустить после seek для Opus (pre-skip compensation). + public const int SkipFramesAfterSeekOpus = 2; + + /// Кадров пропустить после seek для AAC (encoder delay). + public const int SkipFramesAfterSeekAac = 5; + + /// Таймаут graceful shutdown декодера (ms). + public const int DecoderStopTimeoutMs = 500; + + // ═══════════════════════════════════════════════════════ + // PLAYBACK BUFFER SETTINGS — PCM циклический буфер + // ═══════════════════════════════════════════════════════ + + /// Размер PCM буфера в секундах (2s = smooth playback). + public const int BufferSizeSeconds = 2; + + /// Минимальный буфер для старта воспроизведения (ms). + public const int MinBufferMs = 300; + + /// Минимальный буфер для возобновления после seek (ms). + public const int MinSeekResumeBufferMs = 80; + + // ═══════════════════════════════════════════════════════ + // POSITION REPORTING — UI обновления + // ═══════════════════════════════════════════════════════ + + /// Интервал обновления позиции по умолчанию (ms). + public const int DefaultPositionUpdateIntervalMs = 200; + + /// Интервал проверки buffer state (ms). + public const int BufferStateUpdateIntervalMs = 500; + + // ═══════════════════════════════════════════════════════ + // RETRY POLICY — Обработка ошибок + // ═══════════════════════════════════════════════════════ + + /// Максимум попыток повтора операций. + public const int MaxRetryAttempts = 3; + + /// Задержка между попытками (ms). + public const int RetryDelayMs = 1_000; + + // ═══════════════════════════════════════════════════════ + // CACHE MANAGEMENT — Дисковый кэш + // ═══════════════════════════════════════════════════════ + + /// Имя файла метаданных кэша. + public const string CacheMetadataFileName = "cache_index.json"; + + /// Расширение файлов кэша. + public const string CacheFileExtension = ".audio"; + + /// Интервал автосохранения индекса кэша (ms). + public const int CacheAutoSaveIntervalMs = 30_000; + + /// Таймаут блокировки при сохранении индекса (ms). + public const int CacheSaveLockTimeoutMs = 100; + + /// Размер буфера для файловых операций (64KB). + public const int CacheFileBufferSize = 65_536; + + /// Порог очистки кэша (80% от максимума). + public const double CacheCleanupThreshold = 0.8; + + /// + /// Нормализация битрейта для кэш-ключей. + /// + /// ЕДИНСТВЕННЫЙ ИСТОЧНИК ИСТИНЫ для нормализации битрейта. + /// Используется в + /// и . + /// + /// Группирует близкие битрейты в стандартные bucket'ы, + /// чтобы один трек не дублировался в кэше из-за minor различий + /// (например, 127kbps и 128kbps → оба → 128). + /// + /// Битрейт в kbps. + /// Нормализованный битрейт. + public static int NormalizeBitrate(int bitrate) => bitrate switch + { + <= 0 => 0, // Неизвестный — не нормализуем, 0 = "любой" + < 50 => 48, // ~48kbps (Opus low) + < 80 => 64, // ~64kbps (Opus medium-low) + < 110 => 96, // ~96kbps (AAC standard) + < 140 => 128, // ~128kbps (Opus standard) + < 180 => 160, // ~160kbps (Opus high / AAC high) + < 260 => 256, // ~256kbps (Opus very high) + _ => 320 // 320kbps+ + }; + + // ═══════════════════════════════════════════════════════ + // HLS SETTINGS — Deprecated + // ═══════════════════════════════════════════════════════ + + /// Сегментов для упреждающей загрузки в HLS. + [Obsolete("HLS is deprecated. See HlsStreamSource.")] + [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)] + public const int HlsPrefetchSegments = 3; + + /// Длительность AAC фрейма (ms) для HLS (~1024 samples @ 44.1kHz). + [Obsolete("HLS is deprecated. See HlsStreamSource.")] + [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)] + public const int HlsAacFrameDurationMs = 23; + + /// Интервал проверки HLS prefetch (ms). + [Obsolete("HLS is deprecated. See HlsStreamSource.")] + [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)] + public const int HlsPrefetchIntervalMs = 500; + + // ═══════════════════════════════════════════════════════ + // FORMAT DETECTION — Magic bytes для форматов + // ═══════════════════════════════════════════════════════ + + /// Размер заголовка для определения формата (bytes). + public const int FormatDetectionHeaderSize = 12; + + /// WebM: EBML header magic bytes. + public static ReadOnlySpan WebMMagic => [0x1A, 0x45, 0xDF, 0xA3]; + + /// MP4: 'ftyp' box identifier at offset 4. + public static ReadOnlySpan Mp4FtypMagic => "ftyp"u8; + + /// Ogg: 'OggS' page header magic. + public static ReadOnlySpan OggMagic => "OggS"u8; + + // ═══════════════════════════════════════════════════════ + // AAC DECODER TABLES + // ═══════════════════════════════════════════════════════ + + private static readonly int[] AacSampleRates = + [ + 96000, 88200, 64000, 48000, 44100, 32000, + 24000, 22050, 16000, 12000, 11025, 8000 + ]; + + /// Получить sample rate по индексу из AAC Audio Specific Config. + public static int GetAacSampleRate(int index) => + (uint)index < (uint)AacSampleRates.Length ? AacSampleRates[index] : DefaultSampleRate; + + /// Получить количество каналов по channel configuration из AAC ASC. + public static int GetAacChannels(int channelConfig) => channelConfig switch + { + 1 => 1, + 2 => 2, + 3 => 3, + 4 => 4, + 5 => 5, + 6 => 6, + 7 => 8, + _ => DefaultChannels + }; +} \ No newline at end of file diff --git a/Core/Audio/AudioPipeline.cs b/Core/Audio/AudioPipeline.cs new file mode 100644 index 0000000..6b84932 --- /dev/null +++ b/Core/Audio/AudioPipeline.cs @@ -0,0 +1,597 @@ +using System.Buffers; +using LMP.Core.Audio.Backends; +using LMP.Core.Audio.Decoders; +using LMP.Core.Audio.Helpers; +using LMP.Core.Audio.Interfaces; +using static LMP.Core.Audio.AudioConstants; + +namespace LMP.Core.Audio; + +/// +/// Полный конвейер воспроизведения: Source → Decoder → PCM Buffer → Backend. +/// +/// Lifecycle: +/// +/// — создаёт source, decoder, backend, PCM buffer +/// — запускает decoder loop (фоновый Task) +/// — запускает backend (NAudio playback) +/// — останавливает decoder loop (для seek) +/// — очищает PCM buffer и backend buffer +/// — освобождает все ресурсы +/// +/// +/// Seek sequence (вызывается из AudioPlayer.HandleSeekAsync): +/// +/// StopDecodingAsync() — decoder loop завершается +/// Stop() — backend paused +/// Flush() — PCM buffer + backend buffer очищены +/// PrepareForSeek() — skip frames counter установлен +/// Source.SeekAsync() — epoch reset, stream repositioned +/// StartDecoding() — новый decoder loop +/// WaitForBufferAsync() — ждём минимум данных +/// Start() — backend resumed +/// +/// +public sealed class AudioPipeline : IAsyncDisposable +{ + #region Fields + + private readonly IAudioSource _source; + private readonly IAudioDecoder _decoder; + private readonly IPlaybackBackend _backend; + private readonly CircularBuffer _pcmBuffer; + private readonly float[] _decodeBuffer; + private readonly AudioStreamInfo _streamInfo; + + /// + /// Lifetime CTS — отменяется только при Dispose всего pipeline. + /// + private readonly CancellationTokenSource _lifetimeCts; + + /// + /// Decoder CTS — отменяется при каждом StopDecoding, пересоздаётся при StartDecoding. + /// + private CancellationTokenSource? _decoderCts; + + private Task? _decoderTask; + private volatile bool _disposed; + + private int _skipFramesCounter; + private long _decodedSamples; + + #endregion + + #region Properties + + public AudioStreamInfo StreamInfo => _streamInfo; + public IAudioSource Source => _source; + public IAudioDecoder Decoder => _decoder; + public IPlaybackBackend Backend => _backend; + public bool IsDisposed => _disposed; + + public int SampleRate => _decoder.SampleRate; + public int Channels => _decoder.Channels; + + public long PlayedSamples => Interlocked.Read(ref _decodedSamples) - _pcmBuffer.Count; + public int BackendBufferedSamples => _backend.BufferedSamples; + public int BufferedSamples => _pcmBuffer.Count; + + #endregion + + #region Constructor + + private AudioPipeline( + IAudioSource source, + IAudioDecoder decoder, + IPlaybackBackend backend, + CircularBuffer pcmBuffer, + float[] decodeBuffer, + AudioStreamInfo streamInfo, + CancellationTokenSource lifetimeCts) + { + _source = source; + _decoder = decoder; + _backend = backend; + _pcmBuffer = pcmBuffer; + _decodeBuffer = decodeBuffer; + _streamInfo = streamInfo; + _lifetimeCts = lifetimeCts; + } + + #endregion + + #region Factory + + public static async Task CreateAsync( + string url, + string? trackId, + int bitrateHint, + Func>? urlRefresher, + AudioPlayerOptions options, + CancellationToken ct) + { + var lifetimeCts = CancellationTokenSource.CreateLinkedTokenSource(ct); + + IAudioSource? source = null; + IAudioDecoder? decoder = null; + IPlaybackBackend? backend = null; + float[]? decodeBuffer = null; + + try + { + source = await AudioSourceFactory.CreateAsync( + url, + Http.SharedHttpClient.Instance, + urlRefresher, + trackId, + bitrateHint, + lifetimeCts.Token); + + if (!await source.InitializeAsync(lifetimeCts.Token)) + throw new Exceptions.AudioSourceException("Failed to initialize audio source"); + + decoder = CreateDecoder(source); + backend = CreateBackend(options); + + int bufferSize = decoder.SampleRate * decoder.Channels * BufferSizeSeconds; + var pcmBuffer = new CircularBuffer(bufferSize); + decodeBuffer = ArrayPool.Shared.Rent(DecoderBufferFrames * decoder.Channels); + + var streamInfo = BuildStreamInfo(source, trackId, bitrateHint); + + var pipeline = new AudioPipeline( + source, decoder, backend, pcmBuffer, decodeBuffer, streamInfo, lifetimeCts); + + backend.Initialize(decoder.SampleRate, decoder.Channels, pipeline.AudioCallback); + + Log.Info($"[AudioPipeline] Created: {streamInfo.FormatDisplay}"); + + return pipeline; + } + catch (Youtube.Exceptions.StreamUnavailableException) + { + CleanupOnError(source, decoder, backend, decodeBuffer, lifetimeCts); + throw; + } + catch (Exception ex) + { + CleanupOnError(source, decoder, backend, decodeBuffer, lifetimeCts); + + if (ex is Exceptions.AudioSourceException) + throw; + + throw new Exceptions.AudioSourceException("Failed to initialize audio source", ex); + } + } + + private static void CleanupOnError( + IAudioSource? source, + IAudioDecoder? decoder, + IPlaybackBackend? backend, + float[]? decodeBuffer, + CancellationTokenSource lifetimeCts) + { + try + { + backend?.Dispose(); + decoder?.Dispose(); + source?.Dispose(); + + if (decodeBuffer != null) + ArrayPool.Shared.Return(decodeBuffer); + + lifetimeCts.Dispose(); + } + catch (Exception ex) + { + Log.Warn($"[AudioPipeline] Cleanup error: {ex.Message}"); + } + } + + private static IAudioDecoder CreateDecoder(IAudioSource source) + { + int rate = source.SampleRate > 0 ? source.SampleRate : DefaultSampleRate; + int ch = source.Channels > 0 ? source.Channels : DefaultChannels; + + return source.Codec switch + { + AudioCodec.Opus => new OpusDecoder(rate, ch), + AudioCodec.Aac => CreateAacDecoder(source, rate, ch), + _ => throw new NotSupportedException($"Codec {source.Codec} not supported") + }; + } + + private static AacDecoder CreateAacDecoder(IAudioSource source, int rate, int ch) + { + var dec = new AacDecoder(rate, ch); + if (source.DecoderConfig != null) + dec.Initialize(source.DecoderConfig); + return dec; + } + + private static IPlaybackBackend CreateBackend(AudioPlayerOptions options) + { + if (options.UseNullBackend) + return new NullAudioBackend(); + + try + { + return new NAudioBackend(); + } + catch (Exception ex) + { + Log.Warn($"[AudioPipeline] NAudio init failed: {ex.Message}, using NullBackend"); + return new NullAudioBackend(); + } + } + + private static AudioStreamInfo BuildStreamInfo(IAudioSource source, string? trackId, int bitrateHint) + { + var cacheEntry = !string.IsNullOrEmpty(trackId) + ? AudioSourceFactory.FindAnyCachedTrack(trackId)?.Entry + : null; + + string container = cacheEntry?.Format.ToString() ?? source.Codec switch + { + AudioCodec.Opus => "WebM", + AudioCodec.Aac => "Mp4", + _ => "Unknown" + }; + + int bitrate = bitrateHint > 0 ? bitrateHint + : cacheEntry?.Bitrate ?? (source.Codec == AudioCodec.Opus ? 128 : 96); + + return new AudioStreamInfo + { + TrackId = trackId ?? "", + Container = container, + Codec = source.Codec.ToString(), + Bitrate = bitrate, + SampleRate = source.SampleRate > 0 ? source.SampleRate : DefaultSampleRate, + Channels = source.Channels > 0 ? source.Channels : DefaultChannels, + DurationMs = source.DurationMs, + IsFromCache = cacheEntry?.IsComplete ?? false + }; + } + + #endregion + + #region Decoder Loop + + /// + /// Запускает decoder loop в фоновом потоке. + /// + /// Pipeline disposed. + /// Decoder уже запущен. + public void StartDecoding( + Func>? urlRefresher, + AudioPlayerOptions options, + Action? onTrackEnded, + Action? onError) + { + ObjectDisposedException.ThrowIf(_disposed, this); + + if (_decoderTask != null && !_decoderTask.IsCompleted) + throw new InvalidOperationException("Decoder already running"); + + // Dispose старый CTS (если есть) и создаём новый + _decoderCts?.Dispose(); + _decoderCts = CancellationTokenSource.CreateLinkedTokenSource(_lifetimeCts.Token); + + var token = _decoderCts.Token; + + _decoderTask = Task.Run( + () => DecoderLoopAsync(urlRefresher, options, onTrackEnded, onError, token), + token); + + Log.Debug("[AudioPipeline] Decoder started"); + } + + /// + /// Останавливает decoder loop и ожидает его завершения. + /// + /// + /// Безопасность CTS dispose: + /// Старый dispose'ится только ПОСЛЕ подтверждённого + /// завершения . Это предотвращает use-after-dispose + /// если таска всё ещё использует токен. + /// + public async Task StopDecodingAsync(TimeSpan timeout) + { + var cts = _decoderCts; + var task = _decoderTask; + + if (cts == null || task == null) + return; + + // Отменяем decoder CTS + try { cts.Cancel(); } + catch (ObjectDisposedException) { } + + // Ждём завершения таски + try + { + await task.WaitAsync(timeout); + } + catch (TimeoutException) + { + Log.Warn("[AudioPipeline] Decoder stop timeout — task still running"); + } + catch (OperationCanceledException) { } + catch (Exception ex) + { + Log.Warn($"[AudioPipeline] Decoder stop error: {ex.Message}"); + } + + // Обнуляем ПЕРЕД dispose — чтобы StartDecoding не увидел disposed CTS + _decoderTask = null; + _decoderCts = null; + + // Dispose ПОСЛЕ обнуления и ПОСЛЕ завершения таски + try { cts.Dispose(); } + catch (ObjectDisposedException) { } + + Log.Debug("[AudioPipeline] Decoder stopped"); + } + + /// + /// Основной цикл декодирования: читает фреймы из source, декодирует, пишет в PCM buffer. + /// + private async Task DecoderLoopAsync( + Func>? urlRefresher, + AudioPlayerOptions options, + Action? onTrackEnded, + Action? onError, + CancellationToken ct) + { + int retryCount = 0; + bool useResetDecode = false; + + try + { + while (!ct.IsCancellationRequested) + { + ct.ThrowIfCancellationRequested(); + + int skipCount = Interlocked.CompareExchange(ref _skipFramesCounter, 0, 0); + if (skipCount > 0) + useResetDecode = true; + + // Ждём место в буфере + if (_pcmBuffer.Available < _decoder.MaxFrameSize * _decoder.Channels) + { + await Task.Delay(5, ct); + continue; + } + + // Читаем фрейм из source + AudioFrame? frame; + try + { + frame = await _source.ReadFrameAsync(ct); + retryCount = 0; + } + catch (OperationCanceledException) + { + break; + } + catch (Exceptions.UrlExpiredException) when (urlRefresher != null) + { + var newUrl = await urlRefresher(ct); + if (!string.IsNullOrEmpty(newUrl)) + { + Log.Info("[AudioPipeline] URL refreshed in decoder loop"); + continue; + } + throw; + } + catch (IOException ex) when (retryCount++ < options.MaxRetryAttempts) + { + // IOException от ReadAtAsync — сеть недоступна, retry + Log.Warn($"[AudioPipeline] Read retry {retryCount}: {ex.Message}"); + await Task.Delay(options.RetryDelay, ct); + continue; + } + catch (Exception ex) when (retryCount++ < options.MaxRetryAttempts) + { + Log.Warn($"[AudioPipeline] Read retry {retryCount}: {ex.Message}"); + await Task.Delay(options.RetryDelay, ct); + continue; + } + + // Конец трека + if (frame == null) + { + await DrainBufferAsync(ct); + onTrackEnded?.Invoke(); + break; + } + + // Декодируем фрейм + try + { + int samplesDecoded = useResetDecode + ? _decoder.DecodeWithReset(frame.Value.Data.Span, _decodeBuffer) + : _decoder.Decode(frame.Value.Data.Span, _decodeBuffer); + + useResetDecode = false; + + // Пропуск фреймов после seek (pre-skip / encoder delay) + skipCount = Interlocked.CompareExchange(ref _skipFramesCounter, 0, 0); + if (skipCount > 0) + { + Interlocked.Decrement(ref _skipFramesCounter); + continue; + } + + if (samplesDecoded > 0) + { + int totalSamples = samplesDecoded * _decoder.Channels; + _pcmBuffer.Write(_decodeBuffer.AsSpan(0, totalSamples)); + Interlocked.Add(ref _decodedSamples, totalSamples); + } + } + catch (OperationCanceledException) + { + break; + } + catch (Exception ex) + { + Log.Warn($"[AudioPipeline] Decode error (non-fatal): {ex.Message}"); + } + } + } + catch (OperationCanceledException) { } + catch (ObjectDisposedException) { } + catch (Exception ex) + { + Log.Error($"[AudioPipeline] Decoder fatal: {ex.Message}", ex); + onError?.Invoke(ex); + } + } + + /// + /// Ожидает пока PCM буфер не будет воспроизведён (drain при конце трека). + /// + private async Task DrainBufferAsync(CancellationToken ct) + { + while (!_pcmBuffer.IsEmpty && !ct.IsCancellationRequested) + { + await Task.Delay(50, ct); + } + } + + #endregion + + #region Playback Control + + public void Start() + { + if (_disposed) return; + _backend.Start(); + Log.Debug("[AudioPipeline] Backend started"); + } + + public void Stop() + { + if (_disposed) return; + _backend.Stop(); + Log.Debug("[AudioPipeline] Backend stopped"); + } + + public void Flush() + { + if (_disposed) return; + _backend.Flush(); + _pcmBuffer.Clear(); + } + + public void SetVolume(float volume) + { + if (_disposed) return; + _backend.Volume = Math.Min(volume, 1f); + } + + /// + /// Подготавливает decoder к seek: устанавливает skip frames counter. + /// + public void PrepareForSeek() + { + int skipFrames = _source.Codec == AudioCodec.Aac + ? SkipFramesAfterSeekAac + : SkipFramesAfterSeekOpus; + + Interlocked.Exchange(ref _skipFramesCounter, skipFrames); + } + + /// + /// Устанавливает позицию decoded samples (для корректного Position reporting после seek). + /// + public void SetDecodedSamplesPosition(long samples) + { + Interlocked.Exchange(ref _decodedSamples, samples); + } + + #endregion + + #region Audio Callback + + /// + /// Callback вызывается из NAudioBackend fill loop для получения PCM данных. + /// + private int AudioCallback(Span buffer) + { + if (_disposed) + { + buffer.Clear(); + return 0; + } + + int read = _pcmBuffer.Read(buffer); + + if (read < buffer.Length) + buffer[read..].Clear(); + + return read / _decoder.Channels; + } + + #endregion + + #region Buffer Info + + /// + /// Ожидает накопления минимального количества PCM данных в буфере. + /// + public async Task WaitForBufferAsync(int minSamples, int maxWaitMs, CancellationToken ct) + { + int waited = 0; + while (_pcmBuffer.Count < minSamples && waited < maxWaitMs && !ct.IsCancellationRequested) + { + await Task.Delay(10, ct); + waited += 10; + } + } + + #endregion + + #region Dispose + + public async ValueTask DisposeAsync() + { + if (_disposed) return; + _disposed = true; + + // Отменяем всё + try { _lifetimeCts.Cancel(); } + catch (ObjectDisposedException) { } + + try { _decoderCts?.Cancel(); } + catch (ObjectDisposedException) { } + + // Ждём decoder loop + if (_decoderTask != null) + { + try + { + await _decoderTask.WaitAsync(TimeSpan.FromMilliseconds(DecoderStopTimeoutMs)); + } + catch { /* Timeout or cancelled — OK */ } + } + + _backend.Dispose(); + _decoder.Dispose(); + await _source.DisposeAsync(); + + ArrayPool.Shared.Return(_decodeBuffer); + + try { _decoderCts?.Dispose(); } + catch (ObjectDisposedException) { } + + try { _lifetimeCts.Dispose(); } + catch (ObjectDisposedException) { } + + Log.Debug("[AudioPipeline] Disposed"); + } + + #endregion +} \ No newline at end of file diff --git a/Core/Audio/AudioPlayer.cs b/Core/Audio/AudioPlayer.cs new file mode 100644 index 0000000..ccbec4a --- /dev/null +++ b/Core/Audio/AudioPlayer.cs @@ -0,0 +1,731 @@ +using System.Threading.Channels; +using LMP.Core.Audio.Interfaces; +using static LMP.Core.Audio.AudioConstants; + +namespace LMP.Core.Audio; + +public sealed class AudioPlayerOptions +{ + public Func>? UrlRefreshCallback { get; init; } + public TimeSpan PositionUpdateInterval { get; init; } = TimeSpan.FromMilliseconds(DefaultPositionUpdateIntervalMs); + public int MaxRetryAttempts { get; init; } = AudioConstants.MaxRetryAttempts; + public TimeSpan RetryDelay { get; init; } = TimeSpan.FromMilliseconds(RetryDelayMs); + public bool UseNullBackend { get; init; } +} + +/// +/// Аудио плеер с акторной моделью обработки команд. +/// +/// Все публичные методы неблокирующие — они только отправляют команды в очередь. +/// Обработка идёт строго последовательно в фоновом потоке. +/// +public sealed class AudioPlayer : IAsyncDisposable, IDisposable +{ + #region Fields + + private readonly AudioPlayerOptions _options; + private readonly AudioPlayerEvents _events = new(); + private readonly Channel _commandChannel; + private readonly CancellationTokenSource _lifetimeCts = new(); + private readonly Task _commandProcessorTask; + + // Atomic pipeline swap + private volatile AudioPipeline? _activePipeline; + + // State machine + private volatile PlayerState _state = PlayerState.Idle; + private volatile float _volume = 1.0f; + private volatile bool _disposed; + + // Session management - НЕ volatile, используем только через Interlocked + private int _sessionId; + + // Position tracking + private Timer? _positionTimer; + private Timer? _bufferTimer; + + // Track info + private string? _currentTrackId; + + #endregion + + #region Properties + + public AudioPlayerEvents Events => _events; + + public float Volume + { + get => _volume; + set + { + _volume = Math.Clamp(value, 0f, 4f); + _activePipeline?.SetVolume(_volume); + } + } + + public TimeSpan Position + { + get + { + var pipeline = _activePipeline; + if (pipeline == null) return TimeSpan.Zero; + + long playedSamples = Math.Max(0, pipeline.PlayedSamples - pipeline.BackendBufferedSamples); + double seconds = (double)playedSamples / (pipeline.SampleRate * pipeline.Channels); + + var duration = Duration; + if (duration.TotalSeconds > 0 && seconds > duration.TotalSeconds) + seconds = duration.TotalSeconds; + + return TimeSpan.FromSeconds(seconds); + } + } + + public TimeSpan Duration => _activePipeline != null + ? TimeSpan.FromMilliseconds(_activePipeline.StreamInfo.DurationMs) + : TimeSpan.Zero; + + public PlaybackState State => MapState(_state); + public AudioStreamInfo StreamInfo => _activePipeline?.StreamInfo ?? AudioStreamInfo.Empty; + + #endregion + + #region Events (Legacy compatibility) + + public event Action? PositionChanged + { + add => _events.PositionChanged += value; + remove => _events.PositionChanged -= value; + } + + public event Action? StateChanged + { + add => _events.StateChanged += value; + remove => _events.StateChanged -= value; + } + + public event Action? TrackEnded + { + add => _events.TrackEnded += value; + remove => _events.TrackEnded -= value; + } + + public event Action? ErrorOccurred; + + #endregion + + #region Constructor + + public AudioPlayer(AudioPlayerOptions? options = null) + { + _options = options ?? new AudioPlayerOptions(); + + _events.ErrorOccurred += err => ErrorOccurred?.Invoke(err.Exception ?? new Exception(err.Message)); + + _commandChannel = Channel.CreateBounded(new BoundedChannelOptions(32) + { + SingleReader = true, + SingleWriter = false, + FullMode = BoundedChannelFullMode.DropOldest + }); + + _commandProcessorTask = Task.Run(ProcessCommandsAsync); + + Log.Info("[AudioPlayer] Created with actor model"); + } + + #endregion + + #region Public API (Non-blocking) + + /// + /// Запускает воспроизведение. Неблокирующий вызов. + /// + public void Play(string url, string? trackId = null, int bitrateHint = 0) + { + ObjectDisposedException.ThrowIf(_disposed, this); + + int session = Interlocked.Increment(ref _sessionId); + _currentTrackId = trackId; + + // Optimistic UI update + SetState(PlayerState.Loading); + + _commandChannel.Writer.TryWrite(new PlayCommand(url, trackId, bitrateHint, session)); + } + + /// + /// Async версия Play для обратной совместимости. + /// Возвращает Task который завершается когда воспроизведение началось или ошибка. + /// + public Task PlayAsync(string url, string? trackId = null, int bitrateHint = 0, CancellationToken ct = default) + { + ObjectDisposedException.ThrowIf(_disposed, this); + + var tcs = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously); + + void OnStateChanged(PlaybackState state) + { + if (state == PlaybackState.Playing) + { + _events.StateChanged -= OnStateChanged; + _events.ErrorOccurred -= OnError; + tcs.TrySetResult(true); + } + } + + void OnError(AudioPlayerError error) + { + _events.StateChanged -= OnStateChanged; + _events.ErrorOccurred -= OnError; + tcs.TrySetException(error.Exception ?? new Exception(error.Message)); + } + + _events.StateChanged += OnStateChanged; + _events.ErrorOccurred += OnError; + + ct.Register(() => + { + _events.StateChanged -= OnStateChanged; + _events.ErrorOccurred -= OnError; + tcs.TrySetCanceled(ct); + }); + + Play(url, trackId, bitrateHint); + + return tcs.Task; + } + + /// + /// Пауза. Неблокирующий вызов. + /// + public void Pause() + { + if (_state != PlayerState.Playing) return; + + // Optimistic UI update + SetState(PlayerState.Paused); + _activePipeline?.Stop(); + } + + /// + /// Возобновление. Неблокирующий вызов. + /// + public void Resume() + { + if (_state != PlayerState.Paused) return; + + // Optimistic UI update + SetState(PlayerState.Playing); + _activePipeline?.Start(); + } + + /// + /// Остановка. Неблокирующий вызов. + /// + public void Stop() + { + if (_state == PlayerState.Idle || _state == PlayerState.Disposed) return; + + int session = Interlocked.Increment(ref _sessionId); + _commandChannel.Writer.TryWrite(new StopCommand(session)); + } + + /// + /// Async версия Stop. + /// + public async Task StopAsync() + { + if (_state == PlayerState.Idle || _state == PlayerState.Disposed) return; + + int session = Interlocked.Increment(ref _sessionId); + await _commandChannel.Writer.WriteAsync(new StopCommand(session)); + + // Ждём перехода в Idle + int waitCount = 0; + while (_state != PlayerState.Idle && _state != PlayerState.Disposed && waitCount < 100) + { + await Task.Delay(10); + waitCount++; + } + } + + /// + /// Seek. Неблокирующий вызов, UI обновляется мгновенно. + /// + public ValueTask SeekAsync(TimeSpan position, CancellationToken ct = default) + { + if (_disposed) return ValueTask.CompletedTask; + if (_state is not (PlayerState.Playing or PlayerState.Paused)) return ValueTask.CompletedTask; + + var pipeline = _activePipeline; + if (pipeline == null || !pipeline.Source.CanSeek) return ValueTask.CompletedTask; + + // Optimistic UI update — позиция обновляется мгновенно + _events.RaisePositionChanged(position); + + var tcs = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously); + ct.Register(() => tcs.TrySetCanceled(ct)); + + int session = Interlocked.CompareExchange(ref _sessionId, 0, 0); + _commandChannel.Writer.TryWrite(new SeekCommand(position, session, tcs)); + + return new ValueTask(tcs.Task); + } + + #endregion + + #region Command Processing + + private async Task ProcessCommandsAsync() + { + var reader = _commandChannel.Reader; + + try + { + await foreach (var command in reader.ReadAllAsync(_lifetimeCts.Token)) + { + int currentSession = Interlocked.CompareExchange(ref _sessionId, 0, 0); + + // Проверяем актуальность сессии + if (command.SessionId < currentSession && command is not DisposeCommand) + { + Log.Debug($"[AudioPlayer] Skipping outdated command: {command.GetType().Name} (session {command.SessionId} < {currentSession})"); + + if (command is SeekCommand { Completion: { } tcs }) + tcs.TrySetCanceled(); + + continue; + } + + // Проверяем допустимость команды для текущего состояния + if (!PlayerStateTransitions.CanAcceptCommand(_state, command)) + { + Log.Debug($"[AudioPlayer] Ignoring {command.GetType().Name} in state {_state}"); + + if (command is SeekCommand { Completion: { } tcs }) + tcs.TrySetResult(false); + + continue; + } + + try + { + await ProcessCommandAsync(command); + } + catch (OperationCanceledException) when (_lifetimeCts.IsCancellationRequested) + { + break; + } + catch (Exception ex) + { + Log.Error($"[AudioPlayer] Command error: {ex.Message}", ex); + HandleError(ex); + } + } + } + catch (OperationCanceledException) { } + catch (Exception ex) + { + Log.Error($"[AudioPlayer] Command processor fatal: {ex.Message}", ex); + } + } + + private async Task ProcessCommandAsync(IAudioCommand command) + { + switch (command) + { + case PlayCommand play: + await HandlePlayAsync(play); + break; + + case StopCommand: + await HandleStopAsync(); + break; + + case SeekCommand seek: + await HandleSeekAsync(seek); + break; + + case DisposeCommand: + await HandleDisposeAsync(); + break; + } + } + + private async Task HandlePlayAsync(PlayCommand cmd) + { + Log.Info($"[AudioPlayer] Play: {cmd.TrackId ?? "unknown"}, bitrate hint: {cmd.BitrateHint}"); + + SetState(PlayerState.Loading); + + var oldPipeline = Interlocked.Exchange(ref _activePipeline, null); + if (oldPipeline != null) + { + await oldPipeline.DisposeAsync(); + } + + StopTimers(); + + try + { + var pipeline = await AudioPipeline.CreateAsync( + cmd.Url, + cmd.TrackId, + cmd.BitrateHint, + CreateUrlRefresher(), + _options, + _lifetimeCts.Token); + + int currentSession = Interlocked.CompareExchange(ref _sessionId, 0, 0); + if (cmd.SessionId < currentSession) + { + Log.Debug($"[AudioPlayer] Play cancelled: session {cmd.SessionId} < {currentSession}"); + await pipeline.DisposeAsync(); + return; + } + + pipeline.SetVolume(_volume); + _events.RaiseStreamInfo(pipeline.StreamInfo); + + var replaced = Interlocked.Exchange(ref _activePipeline, pipeline); + if (replaced != null) + { + await replaced.DisposeAsync(); + } + + pipeline.StartDecoding( + CreateUrlRefresher(), + _options, + OnTrackEnded, + HandleError); + + SetState(PlayerState.Buffering); + + int threshold = pipeline.SampleRate * pipeline.Channels * MinBufferMs / 1000; + await pipeline.WaitForBufferAsync(threshold, 5000, _lifetimeCts.Token); + + currentSession = Interlocked.CompareExchange(ref _sessionId, 0, 0); + if (cmd.SessionId < currentSession) + { + Log.Debug($"[AudioPlayer] Play cancelled after buffering: session {cmd.SessionId} < {currentSession}"); + var stale = Interlocked.Exchange(ref _activePipeline, null); + if (stale != null) await stale.DisposeAsync(); + return; + } + + pipeline.Start(); + StartTimers(); + SetState(PlayerState.Playing); + + Log.Info($"[AudioPlayer] Playing: {pipeline.StreamInfo.FormatDisplay}"); + } + catch (OperationCanceledException) + { + Log.Debug("[AudioPlayer] Play cancelled"); + if (_state == PlayerState.Loading || _state == PlayerState.Buffering) + SetState(PlayerState.Idle); + } + catch (Youtube.Exceptions.StreamUnavailableException ex) + { + // Специальная обработка StreamUnavailableException — пробрасываем наверх + Log.Error($"[AudioPlayer] Play failed: {ex.Message}", ex); + SetState(PlayerState.Error); + _events.RaiseError(new AudioPlayerError(ex.Message, ex)); + throw; // Пробрасываем для обработки в AudioEngine + } + catch (Exception ex) + { + Log.Error($"[AudioPlayer] Play failed: {ex.Message}", ex); + SetState(PlayerState.Error); + _events.RaiseError(new AudioPlayerError(ex.Message, ex)); + throw; + } + } + + private async Task HandleStopAsync() + { + Log.Debug("[AudioPlayer] Stop"); + + StopTimers(); + + var pipeline = Interlocked.Exchange(ref _activePipeline, null); + if (pipeline != null) + { + await pipeline.DisposeAsync(); + } + + _currentTrackId = null; + + SetState(PlayerState.Idle); + } + + private async Task HandleSeekAsync(SeekCommand cmd) + { + var pipeline = _activePipeline; + if (pipeline == null || !pipeline.Source.CanSeek) + { + cmd.Completion?.TrySetResult(false); + return; + } + + bool wasPlaying = _state == PlayerState.Playing; + SetState(PlayerState.Seeking); + + try + { + // Останавливаем декодер — он больше не читает из source + await pipeline.StopDecodingAsync(TimeSpan.FromMilliseconds(DecoderStopTimeoutMs)); + + // Проверяем сессию + int currentSession = Interlocked.CompareExchange(ref _sessionId, 0, 0); + if (cmd.SessionId < currentSession) + { + cmd.Completion?.TrySetCanceled(); + return; + } + + // Останавливаем backend и очищаем все буферы + // NAudioBackend.Flush() использует _flushGeneration — + // fill loop пропустит устаревшие данные без дополнительных задержек + pipeline.Stop(); + pipeline.Flush(); + + // Подготавливаем decoder (skip frames counter) + pipeline.PrepareForSeek(); + + // Выполняем seek в source + // CachingStreamSource: epoch reset → старые загрузки умирают → + // preload новых чанков → position update → parser reset + long posMs = (long)cmd.Position.TotalMilliseconds; + bool success = await pipeline.Source.SeekAsync(posMs, _lifetimeCts.Token); + + if (!success) + { + cmd.Completion?.TrySetResult(false); + SetState(wasPlaying ? PlayerState.Playing : PlayerState.Paused); + if (wasPlaying) pipeline.Start(); + return; + } + + // Обновляем позицию для корректного Position reporting + long targetSamples = (long)(posMs / 1000.0 * pipeline.SampleRate * pipeline.Channels); + pipeline.SetDecodedSamplesPosition(targetSamples); + + // Перезапускаем decoder loop + pipeline.StartDecoding( + CreateUrlRefresher(), + _options, + OnTrackEnded, + HandleError); + + // Ждём минимальный буфер + int minSamples = pipeline.SampleRate * pipeline.Channels * MinSeekResumeBufferMs / 1000; + await pipeline.WaitForBufferAsync(minSamples, 300, _lifetimeCts.Token); + + // Возобновляем воспроизведение + if (wasPlaying) + { + pipeline.Start(); + SetState(PlayerState.Playing); + } + else + { + SetState(PlayerState.Paused); + } + + _events.RaiseSeekCompleted(cmd.Position); + cmd.Completion?.TrySetResult(true); + + Log.Debug($"[AudioPlayer] Seeked to {posMs}ms"); + } + catch (OperationCanceledException) + { + cmd.Completion?.TrySetCanceled(); + } + catch (Exception ex) + { + Log.Warn($"[AudioPlayer] Seek error: {ex.Message}"); + cmd.Completion?.TrySetException(ex); + + // Восстанавливаем состояние + SetState(wasPlaying ? PlayerState.Playing : PlayerState.Paused); + if (wasPlaying) pipeline.Start(); + } + } + + private async Task HandleDisposeAsync() + { + await HandleStopAsync(); + SetState(PlayerState.Disposed); + } + + #endregion + + #region Timers + + private void StartTimers() + { + _positionTimer = new Timer( + _ => _events.RaisePositionChanged(Position), + null, 0, (int)_options.PositionUpdateInterval.TotalMilliseconds); + + _bufferTimer = new Timer( + _ => RaiseBufferState(), + null, 0, BufferStateUpdateIntervalMs); + } + + private void StopTimers() + { + _positionTimer?.Dispose(); + _positionTimer = null; + + _bufferTimer?.Dispose(); + _bufferTimer = null; + } + + private void RaiseBufferState() + { + var pipeline = _activePipeline; + if (pipeline == null) return; + + var source = pipeline.Source; + var state = new BufferState( + source.BufferProgress, + source.IsFullyBuffered, + source.GetBufferedRanges()); + + _events.RaiseBufferState(state); + } + + #endregion + + #region Helpers + + private void OnTrackEnded() + { + if (_state != PlayerState.Idle && _state != PlayerState.Disposed) + { + _events.RaiseTrackEnded(); + SetState(PlayerState.Idle); + } + } + + private void HandleError(Exception ex) + { + SetState(PlayerState.Error); + _events.RaiseError(new AudioPlayerError(ex.Message, ex)); + } + + private void SetState(PlayerState newState) + { + var oldState = _state; + if (oldState == newState) return; + + if (!PlayerStateTransitions.CanTransition(oldState, newState)) + { + Log.Warn($"[AudioPlayer] Invalid transition: {oldState} -> {newState}"); + return; + } + + _state = newState; + _events.RaiseStateChanged(MapState(newState)); + } + + private static PlaybackState MapState(PlayerState state) => state switch + { + PlayerState.Idle => PlaybackState.Stopped, + PlayerState.Loading => PlaybackState.Loading, + PlayerState.Buffering => PlaybackState.Buffering, + PlayerState.Playing => PlaybackState.Playing, + PlayerState.Paused => PlaybackState.Paused, + PlayerState.Seeking => PlaybackState.Playing, // Визуально как Playing + PlayerState.Error => PlaybackState.Error, + PlayerState.Disposed => PlaybackState.Stopped, + _ => PlaybackState.Stopped + }; + + private Func>? CreateUrlRefresher() + { + if (_options.UrlRefreshCallback == null || string.IsNullOrEmpty(_currentTrackId)) + return null; + + var trackId = _currentTrackId; + var callback = _options.UrlRefreshCallback; + return ct => callback(trackId, ct).AsTask(); + } + + #endregion + + #region Statistics + + public double BufferProgress => _activePipeline?.Source.BufferProgress ?? 0; + public bool IsFullyBuffered => _activePipeline?.Source.IsFullyBuffered ?? false; + + public long GetDownloadedBytes() + { + var pipeline = _activePipeline; + if (pipeline == null) return 0; + + return pipeline.Source switch + { + Sources.CachingStreamSource caching => caching.DownloadedBytes, + Sources.LocalFileSource => pipeline.Source.IsFullyBuffered + ? (long)(pipeline.StreamInfo.DurationMs * pipeline.StreamInfo.Bitrate / 8) + : 0, + _ => (long)(pipeline.Source.BufferProgress / 100.0 + * pipeline.StreamInfo.DurationMs * pipeline.StreamInfo.Bitrate / 8) + }; + } + + public IReadOnlyList<(double Start, double End)> GetBufferedRanges() + { + return _activePipeline?.Source.GetBufferedRanges() ?? []; + } + + public string CurrentCodec => _activePipeline?.StreamInfo.Codec ?? ""; + + #endregion + + #region Dispose + + public void Dispose() + { + if (_disposed) return; + _disposed = true; + + _commandChannel.Writer.TryWrite(new DisposeCommand(int.MaxValue)); + _lifetimeCts.Cancel(); + + try + { + _commandProcessorTask.Wait(TimeSpan.FromSeconds(2)); + } + catch { } + + _lifetimeCts.Dispose(); + + GC.SuppressFinalize(this); + } + + public async ValueTask DisposeAsync() + { + if (_disposed) return; + _disposed = true; + + await _commandChannel.Writer.WriteAsync(new DisposeCommand(int.MaxValue)); + _lifetimeCts.Cancel(); + + try + { + await _commandProcessorTask.WaitAsync(TimeSpan.FromSeconds(2)); + } + catch { } + + _lifetimeCts.Dispose(); + + GC.SuppressFinalize(this); + } + + #endregion +} \ No newline at end of file diff --git a/Core/Audio/AudioPlayerEvents.cs b/Core/Audio/AudioPlayerEvents.cs new file mode 100644 index 0000000..d9785cb --- /dev/null +++ b/Core/Audio/AudioPlayerEvents.cs @@ -0,0 +1,44 @@ +namespace LMP.Core.Audio; + +/// +/// Все события аудио плеера. +/// +public sealed class AudioPlayerEvents +{ + /// Изменилась позиция воспроизведения. + public event Action? PositionChanged; + + /// Изменилось состояние (Playing, Paused, etc). + public event Action? StateChanged; + + /// Трек закончился естественным образом. + public event Action? TrackEnded; + + /// Произошла ошибка. + public event Action? ErrorOccurred; + + /// Информация о потоке стала доступна или обновилась. + public event Action? StreamInfoChanged; + + /// Изменился прогресс буферизации. + public event Action? BufferStateChanged; + + /// Seek завершён. + public event Action? SeekCompleted; + + // Internal raise methods + internal void RaisePositionChanged(TimeSpan pos) => PositionChanged?.Invoke(pos); + internal void RaiseStateChanged(PlaybackState state) => StateChanged?.Invoke(state); + internal void RaiseTrackEnded() => TrackEnded?.Invoke(); + internal void RaiseError(AudioPlayerError error) => ErrorOccurred?.Invoke(error); + internal void RaiseStreamInfo(AudioStreamInfo info) => StreamInfoChanged?.Invoke(info); + internal void RaiseBufferState(BufferState state) => BufferStateChanged?.Invoke(state); + internal void RaiseSeekCompleted(TimeSpan pos) => SeekCompleted?.Invoke(pos); +} + +public readonly record struct AudioPlayerError(string Message, Exception? Exception = null); + +public readonly record struct BufferState( + double Progress, // 0-100% + bool IsFullyBuffered, + IReadOnlyList<(double Start, double End)> Ranges); \ No newline at end of file diff --git a/Core/Audio/AudioSourceFactory.cs b/Core/Audio/AudioSourceFactory.cs new file mode 100644 index 0000000..bc09834 --- /dev/null +++ b/Core/Audio/AudioSourceFactory.cs @@ -0,0 +1,362 @@ +// Core/Audio/AudioSourceFactory.cs + +using System.Net; +using LMP.Core.Audio.Cache; +using LMP.Core.Audio.Http; +using LMP.Core.Audio.Interfaces; +using LMP.Core.Audio.Sources; +using static LMP.Core.Audio.AudioConstants; + +namespace LMP.Core.Audio; + +/// +/// Фабрика аудио источников. Определяет формат, проверяет кэш, +/// создаёт подходящий . +/// +/// Приоритет источников: +/// +/// Полный дисковый кэш → +/// Частичный кэш или онлайн → +/// +/// +public static class AudioSourceFactory +{ + private static AudioCacheManager? _globalCacheManager; + + /// + /// Инициализирует глобальный кэш-менеджер. Должен быть вызван до . + /// + public static void InitializeGlobalCache(AudioCacheManager cacheManager) + { + _globalCacheManager = cacheManager ?? throw new ArgumentNullException(nameof(cacheManager)); + Log.Info("[AudioSourceFactory] Global cache initialized"); + } + + /// Глобальный кэш-менеджер. + public static AudioCacheManager? GlobalCache => _globalCacheManager; + + /// + /// Строит уникальный ключ кэша: trackId + формат + нормализованный битрейт. + /// + /// + /// Использует — единственный источник истины + /// для нормализации битрейта во всём приложении. + /// + public static string BuildCacheKey(string trackId, AudioFormat format, int bitrate) + { + int normalizedBitrate = NormalizeBitrate(bitrate); + return $"{trackId}_{format}_{normalizedBitrate}"; + } + + /// + /// Ищет полностью закэшированный трек любого формата/битрейта. + /// + /// Путь к файлу и метаданные, или null. + public static (string Path, CacheEntry Entry)? FindAnyCachedTrack(string trackId) + { + if (_globalCacheManager == null) return null; + + var entry = _globalCacheManager.FindBestCache(trackId); + if (entry == null) return null; + + var path = _globalCacheManager.GetCachePath(entry.CacheKey); + if (!File.Exists(path)) return null; + + return (path, entry); + } + + /// + /// Создаёт аудио источник. + /// + /// URL потока. Пустой = искать в кэше по trackId. + /// HTTP клиент для загрузки. + /// Callback обновления протухшего URL. + /// ID трека. + /// Битрейт (kbps). 0 = определить автоматически. + /// Токен отмены. + /// + /// не вызван. + /// + /// Формат не поддерживается. + public static async Task CreateAsync( + string url, + HttpClient httpClient, + Func>? urlRefresher = null, + string? trackId = null, + int bitrateHint = 0, + CancellationToken ct = default) + { + if (_globalCacheManager == null) + { + throw new InvalidOperationException( + "AudioSourceFactory.InitializeGlobalCache() must be called before creating sources"); + } + + trackId ??= GenerateTrackIdFromUrl(url); + + // ── Пустой URL → ищем любой кэш для трека ── + if (string.IsNullOrEmpty(url)) + { + var cached = FindAnyCachedTrack(trackId); + if (cached != null) + { + Log.Info($"[AudioSourceFactory] Using cached: {trackId} " + + $"({cached.Value.Entry.Format}/{cached.Value.Entry.Bitrate}kbps)"); + return new LocalFileSource(cached.Value.Path); + } + + throw new ArgumentException("No URL provided and no cache available", nameof(url)); + } + + // ── Определяем формат ── + var format = await DetectFormatAsync(url, httpClient, ct); + if (format == AudioFormat.Unknown) + throw new NotSupportedException($"Could not detect audio format for: {url}"); + + // ── HLS → deprecated, но поддерживаем для обратной совместимости ── + if (format == AudioFormat.Hls) + { + Log.Warn("[AudioSourceFactory] HLS format detected — this is deprecated"); + +#pragma warning disable CS0618 // Type or member is obsolete + return new HlsStreamSource(url, httpClient, trackId); +#pragma warning restore CS0618 + } + + // ── Получаем метаданные потока ── + var (contentLength, codec, detectedBitrate) = await GetStreamInfoAsync(url, format, httpClient, ct); + + // bitrateHint приоритетнее автодетекта + int finalBitrate = bitrateHint > 0 ? bitrateHint : detectedBitrate; + + // Строим ключ кэша + string cacheKey = BuildCacheKey(trackId, format, finalBitrate); + + // ── Проверяем точный кэш ── + if (_globalCacheManager.IsFullyCached(cacheKey)) + { + var cachePath = _globalCacheManager.GetCachePath(cacheKey); + if (File.Exists(cachePath)) + { + Log.Info($"[AudioSourceFactory] Exact cache hit: {cacheKey}"); + return new LocalFileSource(cachePath); + } + } + + Log.Info($"[AudioSourceFactory] Streaming {format}/{codec}/{finalBitrate}kbps: {cacheKey}"); + + return new CachingStreamSource( + cacheKey, trackId, url, contentLength, format, codec, + finalBitrate, httpClient, _globalCacheManager, urlRefresher); + } + + /// + /// Генерирует trackId из URL (fallback когда trackId не предоставлен). + /// + private static string GenerateTrackIdFromUrl(string url) + { + var hash = System.Security.Cryptography.SHA256.HashData( + System.Text.Encoding.UTF8.GetBytes(url)); + return "cache_" + Convert.ToHexString(hash)[..16]; + } + + /// + /// Возвращает информацию о кэше для трека. + /// + public static CacheEntry? GetCacheInfo(string trackId) + { + return _globalCacheManager?.FindBestCache(trackId); + } + + #region Format Detection + + /// + /// Определяет формат по URL (mime-параметры, расширение). + /// + public static AudioFormat DetectFormat(string url) + { + if (string.IsNullOrEmpty(url)) + return AudioFormat.Unknown; + + // HLS + if (url.Contains(".m3u8", StringComparison.OrdinalIgnoreCase) || + url.Contains("/hls/", StringComparison.OrdinalIgnoreCase)) + return AudioFormat.Hls; + + // YouTube mime= parameter + if (url.Contains("mime=audio%2Fwebm", StringComparison.OrdinalIgnoreCase) || + url.Contains("mime=audio/webm", StringComparison.OrdinalIgnoreCase)) + return AudioFormat.WebM; + + if (url.Contains("mime=audio%2Fmp4", StringComparison.OrdinalIgnoreCase) || + url.Contains("mime=audio/mp4", StringComparison.OrdinalIgnoreCase)) + return AudioFormat.Mp4; + + if (url.Contains("mime=audio%2Fogg", StringComparison.OrdinalIgnoreCase) || + url.Contains("mime=audio/ogg", StringComparison.OrdinalIgnoreCase)) + return AudioFormat.Ogg; + + // File extension fallback + if (url.Contains(".webm", StringComparison.OrdinalIgnoreCase)) + return AudioFormat.WebM; + + if (url.Contains(".mp4", StringComparison.OrdinalIgnoreCase) || + url.Contains(".m4a", StringComparison.OrdinalIgnoreCase)) + return AudioFormat.Mp4; + + if (url.Contains(".ogg", StringComparison.OrdinalIgnoreCase) || + url.Contains(".opus", StringComparison.OrdinalIgnoreCase)) + return AudioFormat.Ogg; + + return AudioFormat.Unknown; + } + + /// + /// Определяет формат: сначала по URL, потом по magic bytes через HTTP Range request. + /// + public static async Task DetectFormatAsync( + string url, HttpClient httpClient, CancellationToken ct = default) + { + var urlFormat = DetectFormat(url); + if (urlFormat != AudioFormat.Unknown) + return urlFormat; + + try + { + using var request = SharedHttpClient.CreateRangeRequest(url, 0, FormatDetectionHeaderSize - 1); + using var response = await httpClient.SendAsync( + request, HttpCompletionOption.ResponseHeadersRead, ct); + + if (response.StatusCode == HttpStatusCode.Forbidden) + return AudioFormat.Unknown; + + response.EnsureSuccessStatusCode(); + + var header = await response.Content.ReadAsByteArrayAsync(ct); + return DetectFormatByMagic(header); + } + catch (Exception ex) + { + Log.Warn($"[AudioSourceFactory] Format detection failed: {ex.Message}"); + return AudioFormat.Unknown; + } + } + + /// + /// Определяет формат по magic bytes заголовка. + /// + public static AudioFormat DetectFormatByMagic(ReadOnlySpan header) + { + if (header.Length < 4) return AudioFormat.Unknown; + + if (header[..4].SequenceEqual(WebMMagic)) + return AudioFormat.WebM; + + if (header.Length >= 8 && header.Slice(4, 4).SequenceEqual(Mp4FtypMagic)) + return AudioFormat.Mp4; + + if (header[..4].SequenceEqual(OggMagic)) + return AudioFormat.Ogg; + + return AudioFormat.Unknown; + } + + /// + /// Получает метаданные потока: Content-Length, кодек, битрейт. + /// + private static async Task<(long ContentLength, AudioCodec Codec, int Bitrate)> GetStreamInfoAsync( + string url, AudioFormat format, HttpClient httpClient, CancellationToken ct) + { + long contentLength = 0; + + bool isYouTube = url.Contains("googlevideo.com/videoplayback"); + + if (isYouTube) + { + // YouTube: clen из URL параметров + contentLength = ExtractContentLengthFromUrl(url); + } + else + { + // Остальные: HEAD request + try + { + using var headRequest = new HttpRequestMessage(HttpMethod.Head, url); + using var headResponse = await httpClient.SendAsync(headRequest, ct); + if (headResponse.IsSuccessStatusCode) + contentLength = headResponse.Content.Headers.ContentLength ?? 0; + } + catch { /* Fallback below */ } + } + + if (contentLength <= 0) + contentLength = 100 * 1024 * 1024; // 100MB fallback + + var codec = GetCodecForFormat(format); + int bitrate = ExtractBitrateFromUrl(url); + + if (bitrate == 0) + bitrate = codec == AudioCodec.Opus ? 128 : 96; + + return (contentLength, codec, bitrate); + } + + /// + /// Извлекает Content-Length из URL параметра "clen" (YouTube). + /// + private static long ExtractContentLengthFromUrl(string url) + { + try + { + var uri = new Uri(url); + var query = System.Web.HttpUtility.ParseQueryString(uri.Query); + var clenStr = query["clen"]; + if (!string.IsNullOrEmpty(clenStr) && long.TryParse(clenStr, out var clen)) + return clen; + } + catch { } + + return 0; + } + + /// + /// Извлекает битрейт из URL параметра "bitrate" (YouTube, в bps → kbps). + /// + private static int ExtractBitrateFromUrl(string url) + { + try + { + var uri = new Uri(url); + var query = System.Web.HttpUtility.ParseQueryString(uri.Query); + var bitrateStr = query["bitrate"]; + if (!string.IsNullOrEmpty(bitrateStr) && int.TryParse(bitrateStr, out var br)) + return br / 1000; + } + catch { } + + return 0; + } + + /// + /// Определяет кодек по формату контейнера. + /// + public static AudioCodec GetCodecForFormat(AudioFormat format) => format switch + { + AudioFormat.WebM => AudioCodec.Opus, + AudioFormat.Ogg => AudioCodec.Opus, + AudioFormat.Mp4 => AudioCodec.Aac, + AudioFormat.Hls => AudioCodec.Aac, + _ => AudioCodec.Unknown + }; + + #endregion +} + +public enum AudioFormat +{ + Unknown = 0, + WebM = 1, + Mp4 = 2, + Ogg = 3, + Hls = 4 +} \ No newline at end of file diff --git a/Core/Audio/AudioStreamInfo.cs b/Core/Audio/AudioStreamInfo.cs new file mode 100644 index 0000000..f2b3d4d --- /dev/null +++ b/Core/Audio/AudioStreamInfo.cs @@ -0,0 +1,25 @@ +namespace LMP.Core.Audio; + +/// +/// Неизменяемая информация о текущем аудио потоке. +/// Единый источник правды о формате/кодеке/битрейте. +/// +public sealed record AudioStreamInfo +{ + public static readonly AudioStreamInfo Empty = new(); + + public string TrackId { get; init; } = ""; + public string Container { get; init; } = ""; // WebM, Mp4, Ogg + public string Codec { get; init; } = ""; // Opus, Aac + public int Bitrate { get; init; } // kbps + public int SampleRate { get; init; } // Hz + public int Channels { get; init; } + public long DurationMs { get; init; } + public bool IsFromCache { get; init; } + + public bool IsValid => !string.IsNullOrEmpty(Codec) && Bitrate > 0; + + public string FormatDisplay => IsValid + ? $"{Container}/{Codec}/{Bitrate:F0}kbps" + : "Loading..."; +} \ No newline at end of file diff --git a/Core/Audio/Backends/NAudioBackend.cs b/Core/Audio/Backends/NAudioBackend.cs new file mode 100644 index 0000000..ac8e4b4 --- /dev/null +++ b/Core/Audio/Backends/NAudioBackend.cs @@ -0,0 +1,274 @@ +using LMP.Core.Audio.Interfaces; +using NAudio.Wave; + +namespace LMP.Core.Audio.Backends; + +/// +/// Бэкенд воспроизведения на базе NAudio (WaveOutEvent). +/// +/// Архитектура: +/// Фоновый fill loop читает PCM данные через callback и заполняет +/// . NAudio воспроизводит из этого буфера. +/// +/// Потокобезопасность: +/// +/// / — можно вызывать из любого потока +/// — инкрементирует , +/// fill loop пропускает текущие данные +/// Fill loop — единственный writer в +/// +/// +public sealed class NAudioBackend : IPlaybackBackend +{ + private const int InternalBufferSeconds = 1; + private const int DesiredLatencyMs = 150; + + /// Заполнение буфера, выше которого fill loop засыпает. + private const double BufferHighWaterMark = 0.8; + + /// Пауза fill loop когда буфер полон или не playing (ms). + private const int IdleSleepMs = 10; + + /// Пауза fill loop когда нет данных от callback (ms). + private const int EmptyCallbackSleepMs = 10; + + /// Пауза после flush detection (ms). + private const int PostFlushSleepMs = 10; + + /// Пауза после ошибки в fill loop (ms). + private const int ErrorSleepMs = 100; + + private WaveOutEvent? _waveOut; + private BufferedWaveProvider? _provider; + private AudioDataCallback? _callback; + + private int _channels; + private float[]? _floatBuffer; + private byte[]? _byteBuffer; + + private volatile bool _playing; + private volatile bool _disposed; + + /// + /// Поколение flush. Инкрементируется при . + /// Fill loop сравнивает до и после чтения callback — + /// если изменилось, данные устарели и не записываются в буфер. + /// + private int _flushGeneration; + + private Task? _fillTask; + private CancellationTokenSource? _cts; + + /// + public string Name => "NAudio"; + + /// + public float Volume + { + get; + set + { + field = Math.Clamp(value, 0f, 1f); + if (_waveOut != null) + { + try { _waveOut.Volume = field; } + catch (ObjectDisposedException) { } + } + } + } = 1.0f; + + /// + public bool IsPlaying => _playing; + + /// + public int BufferedSamples => + _provider != null ? _provider.BufferedBytes / sizeof(float) : 0; + + /// + public void Initialize(int sampleRate, int channels, AudioDataCallback dataCallback) + { + ObjectDisposedException.ThrowIf(_disposed, this); + + _callback = dataCallback ?? throw new ArgumentNullException(nameof(dataCallback)); + _channels = channels; + + var format = WaveFormat.CreateIeeeFloatWaveFormat(sampleRate, channels); + + _provider = new BufferedWaveProvider(format) + { + BufferDuration = TimeSpan.FromSeconds(InternalBufferSeconds), + DiscardOnBufferOverflow = true + }; + + _waveOut = new WaveOutEvent + { + DesiredLatency = DesiredLatencyMs, + NumberOfBuffers = 2 + }; + + _waveOut.Init(_provider); + _waveOut.Volume = Volume; + + // Буфер: 50ms @ sampleRate*channels + int samplesPerRead = sampleRate * channels / 20; + _floatBuffer = new float[samplesPerRead]; + _byteBuffer = new byte[samplesPerRead * sizeof(float)]; + + _cts = new CancellationTokenSource(); + + // ИСПРАВЛЕНИЕ: Task.Run вместо Task.Factory.StartNew + // Task.Factory.StartNew с async lambda возвращает Task, + // и _fillTask.Wait() ждёт только внешний Task (завершается мгновенно). + _fillTask = Task.Run(() => FillBufferLoopAsync(_cts.Token), _cts.Token); + + Log.Info($"[NAudioBackend] Initialized: {sampleRate}Hz, {channels}ch"); + } + + /// + public void Start() + { + ObjectDisposedException.ThrowIf(_disposed, this); + if (_waveOut == null || _playing) return; + + _waveOut.Play(); + _playing = true; + } + + /// + public void Stop() + { + if (_waveOut == null || !_playing) return; + + _waveOut.Pause(); + _playing = false; + } + + /// + /// + /// Инкрементирует и очищает буфер. + /// Fill loop обнаружит смену generation и пропустит устаревшие данные. + /// + public void Flush() + { + if (_provider == null || _disposed) return; + + // Инкрементируем generation ПЕРЕД очисткой буфера + Interlocked.Increment(ref _flushGeneration); + _provider.ClearBuffer(); + + Log.Debug("[NAudioBackend] Flushed"); + } + + /// + /// Фоновый цикл заполнения буфера воспроизведения. + /// + private async Task FillBufferLoopAsync(CancellationToken ct) + { + int lastGeneration = Interlocked.CompareExchange(ref _flushGeneration, 0, 0); + + while (!ct.IsCancellationRequested && !_disposed) + { + try + { + if (_provider == null || _callback == null + || _floatBuffer == null || _byteBuffer == null) + break; + + // Проверяем flush + int currentGeneration = Interlocked.CompareExchange(ref _flushGeneration, 0, 0); + if (currentGeneration != lastGeneration) + { + lastGeneration = currentGeneration; + await Task.Delay(PostFlushSleepMs, ct); + continue; + } + + // Не playing — спим + if (!_playing) + { + await Task.Delay(IdleSleepMs, ct); + continue; + } + + // Буфер достаточно полон — спим + if (_provider.BufferedDuration.TotalSeconds > InternalBufferSeconds * BufferHighWaterMark) + { + await Task.Delay(IdleSleepMs * 2, ct); + continue; + } + + // Читаем данные из callback (PCM ring buffer) + int framesRead = _callback(_floatBuffer); + + // Проверяем generation ПОСЛЕ чтения — + // если flush произошёл во время callback, данные устарели + int generationAfterRead = Interlocked.CompareExchange(ref _flushGeneration, 0, 0); + if (generationAfterRead != lastGeneration) + { + lastGeneration = generationAfterRead; + continue; // Отбрасываем прочитанные данные + } + + if (framesRead > 0 && _playing) + { + int totalSamples = framesRead * _channels; + int bytes = totalSamples * sizeof(float); + Buffer.BlockCopy(_floatBuffer, 0, _byteBuffer, 0, bytes); + _provider.AddSamples(_byteBuffer, 0, bytes); + } + else if (framesRead <= 0) + { + await Task.Delay(EmptyCallbackSleepMs, ct); + } + } + catch (OperationCanceledException) + { + break; + } + catch (ObjectDisposedException) + { + break; + } + catch (Exception ex) + { + Log.Error($"[NAudioBackend] Fill loop error: {ex.Message}"); + await Task.Delay(ErrorSleepMs, ct); + } + } + } + + /// + public void Dispose() + { + if (_disposed) return; + _disposed = true; + + _playing = false; + + // Отменяем fill loop + _cts?.Cancel(); + + if (_fillTask != null) + { + try { _fillTask.Wait(TimeSpan.FromSeconds(1)); } + catch { /* Timeout OK */ } + } + + // Останавливаем и dispose'им WaveOut + try { _waveOut?.Stop(); } + catch { } + + try { _waveOut?.Dispose(); } + catch { } + + _waveOut = null; + _provider = null; + _floatBuffer = null; + _byteBuffer = null; + + _cts?.Dispose(); + _cts = null; + + Log.Debug("[NAudioBackend] Disposed"); + } +} \ No newline at end of file diff --git a/Core/Audio/Backends/NullAudioBackend.cs b/Core/Audio/Backends/NullAudioBackend.cs new file mode 100644 index 0000000..6c27409 --- /dev/null +++ b/Core/Audio/Backends/NullAudioBackend.cs @@ -0,0 +1,91 @@ +using LMP.Core.Audio.Interfaces; + +namespace LMP.Core.Audio.Backends; + +/// +/// Заглушка для тестов без реального аудио вывода. +/// +public sealed class NullAudioBackend : IPlaybackBackend +{ + private AudioDataCallback? _callback; + private int _sampleRate; + private int _channels; + private volatile float _volume = 1.0f; + private volatile bool _playing; + private volatile bool _disposed; + + private Task? _consumeTask; + private CancellationTokenSource? _cts; + + public string Name => "Null"; + public float Volume { get => _volume; set => _volume = Math.Clamp(value, 0f, 1f); } + public bool IsPlaying => _playing; + public int BufferedSamples => 0; + + public void Initialize(int sampleRate, int channels, AudioDataCallback dataCallback) + { + _sampleRate = sampleRate; + _channels = channels; + _callback = dataCallback; + + Log.Debug($"[NullAudioBackend] Initialized: {sampleRate}Hz, {channels}ch"); + } + + public void Start() + { + if (_playing || _callback == null) return; + + _playing = true; + _cts = new CancellationTokenSource(); + _consumeTask = Task.Run(() => ConsumeLoopAsync(_cts.Token)); + + Log.Debug("[NullAudioBackend] Started"); + } + + public void Stop() + { + _playing = false; + _cts?.Cancel(); + + Log.Debug("[NullAudioBackend] Stopped"); + } + + private async Task ConsumeLoopAsync(CancellationToken ct) + { + // Симулируем потребление аудио данных + var buffer = new float[1024 * _channels]; + int samplesPerSecond = _sampleRate * _channels; + int delayMs = 1000 * buffer.Length / samplesPerSecond; + + while (!ct.IsCancellationRequested && _playing) + { + _callback?.Invoke(buffer); + await Task.Delay(Math.Max(delayMs, 10), ct); + } + } + + public void Dispose() + { + if (_disposed) return; + _disposed = true; + + _playing = false; + _cts?.Cancel(); + + try + { + _consumeTask?.Wait(500); + } + catch + { + // Ignore + } + + _cts?.Dispose(); + } + + public void Flush() + { + // Ignore + } +} \ No newline at end of file diff --git a/Core/Audio/Cache/AudioCacheManager.cs b/Core/Audio/Cache/AudioCacheManager.cs new file mode 100644 index 0000000..33ce667 --- /dev/null +++ b/Core/Audio/Cache/AudioCacheManager.cs @@ -0,0 +1,1160 @@ +using System.Collections.Concurrent; +using System.Security.Cryptography; +using System.Text; +using System.Text.Json; +using System.Text.Json.Serialization; +using LMP.Core.Audio.Interfaces; +using LMP.Core.Models; +using static LMP.Core.Audio.AudioConstants; + +namespace LMP.Core.Audio.Cache; + +public sealed class AudioCacheManager : IAsyncDisposable, IDisposable +{ + private readonly string _cacheDirectory; + private readonly long _maxCacheSize; + private readonly ConcurrentDictionary _entries = new(); + + /// + /// Reverse index: trackId → list of cacheKeys. + /// Ускоряет поиск кэшей трека с O(N) до O(1). + /// + private readonly ConcurrentDictionary> _trackIndex = new(); + + private readonly SemaphoreSlim _saveLock = new(1, 1); + private readonly CancellationTokenSource _timerCts = new(); + private readonly Task _autoSaveTask; + + private volatile bool _disposed; + + /// + /// Событие: формат трека полностью закэширован. + /// (trackId, container, bitrate, isDownloaded) + /// + public event Action? OnFormatCached; + + /// + /// Событие: весь кэш очищен. + /// + public event Action? OnCacheCleared; + + public AudioCacheManager(string? cacheDirectory = null, long maxCacheSizeMb = 2048) + { + _cacheDirectory = cacheDirectory ?? G.Folder.AudioCache; + _maxCacheSize = maxCacheSizeMb * 1024 * 1024; + + Directory.CreateDirectory(_cacheDirectory); + LoadIndex(); + + _autoSaveTask = AutoSaveLoopAsync(_timerCts.Token); + + Log.Info($"[AudioCache] Initialized: {_cacheDirectory}, max={maxCacheSizeMb}MB, entries={_entries.Count}"); + } + + #region Public API + + /// + /// Проверяет, полностью ли закэширован трек любого формата/битрейта (по trackId). + /// O(1) благодаря reverse index. + /// + public bool IsTrackFullyCached(string trackId) + { + if (string.IsNullOrEmpty(trackId)) return false; + + if (!_trackIndex.TryGetValue(trackId, out var keys)) + return false; + + foreach (var key in keys) + { + if (_entries.TryGetValue(key, out var entry) && entry.IsComplete) + return true; + } + + return false; + } + + /// + /// Возвращает метаданные лучшего полного кэша по trackId. + /// O(k) где k — количество форматов трека (обычно 1-3). + /// + public CacheEntry? FindBestCacheByTrackId(string trackId) => FindBestCache(trackId); + + /// + /// Массовая проверка и обновление IsCached статуса треков. + /// Оптимизированная версия: O(entries) вместо O(tracks × entries). + /// + public void HydrateCacheStatus(IEnumerable tracks) + { + var trackMap = new Dictionary>(StringComparer.Ordinal); + + foreach (var track in tracks) + { + if (track.IsDownloaded || track.IsCached || string.IsNullOrEmpty(track.Id)) + continue; + + if (!trackMap.TryGetValue(track.Id, out var list)) + { + list = new List(1); + trackMap[track.Id] = list; + } + list.Add(track); + } + + if (trackMap.Count == 0) return; + + // Используем reverse index для быстрого поиска + foreach (var (trackId, tracksList) in trackMap) + { + if (!_trackIndex.TryGetValue(trackId, out var keys)) + continue; + + CacheEntry? bestEntry = null; + + foreach (var key in keys) + { + if (_entries.TryGetValue(key, out var entry) + && entry.IsComplete + && (bestEntry == null || entry.Bitrate > bestEntry.Bitrate)) + { + bestEntry = entry; + } + } + + if (bestEntry != null) + { + foreach (var track in tracksList) + { + track.MarkAsCached(bestEntry.Format.ToString(), bestEntry.Bitrate); + } + } + } + } + + public bool IsFullyCached(string cacheKey) + { + if (!_entries.TryGetValue(cacheKey, out var entry)) + return false; + + return entry.IsComplete; + } + + public CacheEntry? FindBestCache(string trackId) + { + if (!_trackIndex.TryGetValue(trackId, out var keys)) + return null; + + CacheEntry? best = null; + + foreach (var key in keys) + { + if (_entries.TryGetValue(key, out var entry) + && entry.IsComplete + && (best == null || entry.Bitrate > best.Bitrate)) + { + best = entry; + } + } + + return best; + } + + public bool HasPartialCache(string cacheKey) + { + return _entries.TryGetValue(cacheKey, out var entry) && entry.DownloadedChunks > 0; + } + + public CacheEntry? GetCacheInfo(string cacheKey) + { + return _entries.TryGetValue(cacheKey, out var entry) ? entry : null; + } + + public string GetCachePath(string cacheKey) + { + var safeId = Convert.ToHexString(SHA256.HashData(Encoding.UTF8.GetBytes(cacheKey)))[..16]; + return Path.Combine(_cacheDirectory, safeId + CacheFileExtension); + } + + public void Touch(string cacheKey) + { + if (_entries.TryGetValue(cacheKey, out var entry)) + { + entry.LastAccessedAt = DateTime.UtcNow; + } + } + + public CacheEntry CreateOrUpdate( + string cacheKey, + string trackId, + string url, + long totalSize, + AudioFormat format, + AudioCodec codec, + int bitrate = 0, + long durationMs = -1, + int chunkSize = ChunkSize) + { + var entry = _entries.GetOrAdd(cacheKey, _ => new CacheEntry + { + CacheKey = cacheKey, + TrackId = trackId, + OriginalUrl = url, + TotalSize = totalSize, + Format = format, + Codec = codec, + Bitrate = bitrate, + DurationMs = durationMs, + ChunkSize = chunkSize, + TotalChunks = (int)Math.Ceiling((double)totalSize / chunkSize), + CreatedAt = DateTime.UtcNow, + LastAccessedAt = DateTime.UtcNow + }); + + entry.OriginalUrl = url; + entry.LastAccessedAt = DateTime.UtcNow; + + if (bitrate > 0) + entry.Bitrate = bitrate; + + if (durationMs > 0) + entry.DurationMs = durationMs; + + // Обновляем reverse index + AddToTrackIndex(trackId, cacheKey); + + return entry; + } + + public void MarkComplete(string cacheKey, long? durationMs = null, int? bitrate = null) + { + if (_entries.TryGetValue(cacheKey, out var entry)) + { + entry.IsComplete = true; + entry.CompletedAt = DateTime.UtcNow; + entry.LastAccessedAt = DateTime.UtcNow; + + if (durationMs.HasValue) + entry.DurationMs = durationMs.Value; + + if (bitrate.HasValue) + entry.Bitrate = bitrate.Value; + + // Обновляем кэшированный размер файла + UpdateFileSizeCache(entry); + + Log.Info($"[AudioCache] Track fully cached: {cacheKey}"); + + _ = SaveIndexAsync(); + + // Поднимаем событие для UI + RaiseFormatCached(entry); + } + } + + private void RaiseFormatCached(CacheEntry entry) + { + try + { + OnFormatCached?.Invoke( + entry.TrackId, + entry.Format.ToString(), + entry.Bitrate, + false); + } + catch (Exception ex) + { + Log.Warn($"[AudioCache] OnFormatCached handler error: {ex.Message}"); + } + } + + public async Task WriteChunkAsync(string cacheKey, int chunkIndex, byte[] data, CancellationToken ct = default) + { + if (!_entries.TryGetValue(cacheKey, out var entry)) + return; + + if (entry.IsComplete) + return; + + var filePath = GetCachePath(cacheKey); + long offset = (long)chunkIndex * entry.ChunkSize; + + try + { + await using var fs = new FileStream( + filePath, + FileMode.OpenOrCreate, + FileAccess.Write, + FileShare.ReadWrite, + bufferSize: CacheFileBufferSize, + useAsync: true); + + fs.Seek(offset, SeekOrigin.Begin); + await fs.WriteAsync(data, ct); + + entry.MarkChunkDownloaded(chunkIndex); + entry.LastAccessedAt = DateTime.UtcNow; + + if (!entry.IsComplete && entry.DownloadedChunks >= entry.TotalChunks) + { + entry.IsComplete = true; + entry.CompletedAt = DateTime.UtcNow; + UpdateFileSizeCache(entry); + Log.Info($"[AudioCache] Track fully cached: {cacheKey}"); + RaiseFormatCached(entry); + } + } + catch (Exception ex) + { + Log.Warn($"[AudioCache] Write chunk failed: {ex.Message}"); + } + } + + public async Task ReadChunkAsync(string cacheKey, int chunkIndex, CancellationToken ct = default) + { + if (!_entries.TryGetValue(cacheKey, out var entry)) + return null; + + if (!entry.IsChunkDownloaded(chunkIndex)) + return null; + + var filePath = GetCachePath(cacheKey); + if (!File.Exists(filePath)) + return null; + + long offset = (long)chunkIndex * entry.ChunkSize; + int size = (int)Math.Min(entry.ChunkSize, entry.TotalSize - offset); + + if (size <= 0) + return null; + + try + { + var buffer = new byte[size]; + + await using var fs = new FileStream( + filePath, + FileMode.Open, + FileAccess.Read, + FileShare.ReadWrite, + bufferSize: CacheFileBufferSize, + useAsync: true); + + fs.Seek(offset, SeekOrigin.Begin); + int totalRead = 0; + + while (totalRead < size) + { + int read = await fs.ReadAsync(buffer.AsMemory(totalRead, size - totalRead), ct); + if (read == 0) break; + totalRead += read; + } + + entry.LastAccessedAt = DateTime.UtcNow; + + return totalRead == size ? buffer : null; + } + catch + { + return null; + } + } + + public Stream? OpenCachedStream(string cacheKey) + { + if (!IsFullyCached(cacheKey)) + return null; + + var filePath = GetCachePath(cacheKey); + Touch(cacheKey); + + return new FileStream( + filePath, + FileMode.Open, + FileAccess.Read, + FileShare.Read, + bufferSize: CacheFileBufferSize); + } + + public void RemoveCache(string cacheKey) + { + if (_entries.TryRemove(cacheKey, out var entry)) + { + // Удаляем из reverse index + RemoveFromTrackIndex(entry.TrackId, cacheKey); + + var filePath = GetCachePath(cacheKey); + try + { + if (File.Exists(filePath)) + File.Delete(filePath); + } + catch { } + + _ = SaveIndexAsync(); + } + } + + public async Task CleanupAsync(CancellationToken ct = default) + { + var stats = GetStats(); + long totalSize = stats.TotalSizeBytes; + + if (totalSize <= _maxCacheSize) + return; + + Log.Info($"[AudioCache] Cleanup needed: {totalSize / 1024 / 1024}MB > {_maxCacheSize / 1024 / 1024}MB"); + + var entries = _entries.Values + .OrderBy(e => e.LastAccessedAt) + .ToList(); + + foreach (var entry in entries) + { + if (totalSize <= _maxCacheSize * CacheCleanupThreshold) + break; + + totalSize -= entry.ActualFileSize; + RemoveCache(entry.CacheKey); + } + + Log.Info($"[AudioCache] Cleanup complete, new size: {totalSize / 1024 / 1024}MB"); + } + + #endregion + + #region Statistics + + /// + /// Возвращает статистику кэша БЕЗ IO (использует кэшированные размеры). + /// + public CacheStats GetStats() + { + long totalSize = 0; + int completeCount = 0; + int partialCount = 0; + + foreach (var entry in _entries.Values) + { + totalSize += entry.ActualFileSize; + + if (entry.IsComplete) + completeCount++; + else if (entry.DownloadedChunks > 0) + partialCount++; + } + + return new CacheStats + { + TotalEntries = _entries.Count, + CompleteEntries = completeCount, + PartialEntries = partialCount, + TotalSizeBytes = totalSize, + MaxSizeBytes = _maxCacheSize + }; + } + + /// + /// Возвращает кортеж (fileCount, sizeMb) для совместимости со старым API. + /// + public (int FileCount, int SizeMb) GetStatsCompact() + { + var stats = GetStats(); + return (stats.CompleteEntries, (int)(stats.TotalSizeBytes / 1024 / 1024)); + } + + /// + /// Возвращает статистику папки Downloads. + /// + public static (int FileCount, int SizeMb) GetDownloadsStats() + { + try + { + var dir = new DirectoryInfo(G.Folder.Downloads); + if (!dir.Exists) + return (0, 0); + + var files = dir.GetFiles("*.*", SearchOption.TopDirectoryOnly); + long totalBytes = files.Sum(f => f.Length); + + return (files.Length, (int)(totalBytes / 1024 / 1024)); + } + catch (Exception ex) + { + Log.Warn($"[AudioCache] GetDownloadsStats error: {ex.Message}"); + return (0, 0); + } + } + + /// + /// Возвращает список закэшированных форматов для трека. + /// + public List<(string Container, int Bitrate)> GetCachedFormats(string trackId) + { + var result = new List<(string, int)>(); + + if (!_trackIndex.TryGetValue(trackId, out var keys)) + return result; + + foreach (var key in keys) + { + if (_entries.TryGetValue(key, out var entry) && entry.IsComplete) + result.Add((entry.Format.ToString(), entry.Bitrate)); + } + + return result; + } + + /// + /// Проверяет, закэширован ли конкретный формат/битрейт. + /// + public bool IsFormatCached(string trackId, string container, int bitrate) + { + if (!Enum.TryParse(container, true, out var format)) + return false; + + var cacheKey = BuildCacheKey(trackId, format, bitrate); + return IsFullyCached(cacheKey); + } + + /// + /// Строит уникальный ключ кэша: trackId + формат + нормализованный битрейт. + /// Делегирует к — единственному + /// источнику истины для нормализации. + /// + public static string BuildCacheKey(string trackId, AudioFormat format, int bitrate) + { + // Делегируем к AudioConstants — одна логика нормализации на всё приложение + int normalizedBitrate = AudioConstants.NormalizeBitrate(bitrate); + return $"{trackId}_{format}_{normalizedBitrate}"; + } + + /// + /// Нормализует битрейт. Делегирует к . + /// + /// + /// Оставлен для обратной совместимости. Новый код должен использовать + /// напрямую. + /// + [Obsolete("Use AudioConstants.NormalizeBitrate() directly.")] + public static int NormalizeBitrate(int bitrate) => AudioConstants.NormalizeBitrate(bitrate); + + #endregion + + #region Export to Downloads + + /// + /// Экспортирует полностью закэшированный трек в папку Downloads. + /// + public async Task ExportTrackToDownloadsAsync( + string trackId, + Func> getTrackFunc, + Func updateTrackFunc, + CancellationToken ct = default) + { + var entry = FindBestCache(trackId); + if (entry == null) + { + Log.Warn($"[AudioCache] Track {trackId} not fully cached, cannot export"); + return false; + } + + return await PromoteCacheToDownloadsAsync(entry, getTrackFunc, updateTrackFunc, ct); + } + + private async Task PromoteCacheToDownloadsAsync( + CacheEntry entry, + Func> getTrackFunc, + Func updateTrackFunc, + CancellationToken ct) + { + if (!await _saveLock.WaitAsync(1000, ct)) + return false; + + try + { + var track = await getTrackFunc(entry.TrackId); + if (track == null) + { + Log.Warn($"[AudioCache] Track not found: {entry.TrackId}"); + return false; + } + + if (track.IsDownloaded && !string.IsNullOrEmpty(track.LocalPath) && File.Exists(track.LocalPath)) + { + Log.Debug($"[AudioCache] Already downloaded: {track.Title}"); + return true; + } + + var cachePath = GetCachePath(entry.CacheKey); + if (!File.Exists(cachePath)) + { + Log.Warn($"[AudioCache] Cache file not found: {cachePath}"); + return false; + } + + var fileInfo = new FileInfo(cachePath); + if (fileInfo.Length < entry.TotalSize) + { + Log.Warn($"[AudioCache] Incomplete cache file: {fileInfo.Length} < {entry.TotalSize}"); + return false; + } + + string ext = entry.Format switch + { + AudioFormat.WebM => "webm", + AudioFormat.Mp4 => "m4a", + AudioFormat.Ogg => "ogg", + _ => "audio" + }; + + string safeName = SanitizeFileName($"{track.Author} - {track.Title}.{ext}"); + string destPath = Path.Combine(G.Folder.Downloads, safeName); + + if (File.Exists(destPath)) + { + var existingInfo = new FileInfo(destPath); + if (existingInfo.Length == entry.TotalSize) + { + track.MarkAsDownloaded(destPath, entry.Format.ToString(), entry.Bitrate); + await updateTrackFunc(track); + Log.Debug($"[AudioCache] File already exists: {safeName}"); + return true; + } + + var baseName = Path.GetFileNameWithoutExtension(safeName); + destPath = Path.Combine(G.Folder.Downloads, $"{baseName}_{entry.Bitrate}kbps.{ext}"); + } + + Log.Info($"[AudioCache] Exporting to Downloads: {Path.GetFileName(destPath)}"); + + File.Copy(cachePath, destPath, overwrite: true); + + track.MarkAsDownloaded(destPath, entry.Format.ToString(), entry.Bitrate); + await updateTrackFunc(track); + + OnFormatCached?.Invoke(entry.TrackId, entry.Format.ToString(), entry.Bitrate, true); + + return true; + } + catch (Exception ex) + { + Log.Error($"[AudioCache] Export failed: {ex.Message}"); + return false; + } + finally + { + _saveLock.Release(); + } + } + + private static string SanitizeFileName(string fileName) + { + var invalid = Path.GetInvalidFileNameChars(); + var sanitized = string.Join("_", fileName.Split(invalid, StringSplitOptions.RemoveEmptyEntries)); + return sanitized.Length > 200 ? sanitized[..200] : sanitized; + } + + #endregion + + #region Clear & Maintenance + + /// + /// Полностью очищает кэш аудио. + /// + public async Task ClearAllAsync(CancellationToken ct = default) + { + if (!await _saveLock.WaitAsync(5000, ct)) + { + Log.Warn("[AudioCache] ClearAllAsync: couldn't acquire lock"); + return; + } + + try + { + Log.Info("[AudioCache] Clearing all cache..."); + + _entries.Clear(); + _trackIndex.Clear(); + + var dir = new DirectoryInfo(_cacheDirectory); + if (dir.Exists) + { + foreach (var file in dir.GetFiles()) + { + try + { + file.Delete(); + } + catch (Exception ex) + { + Log.Warn($"[AudioCache] Failed to delete {file.Name}: {ex.Message}"); + } + } + } + + Log.Info("[AudioCache] Cache cleared"); + } + finally + { + _saveLock.Release(); + } + + // Уведомляем подписчиков ПОСЛЕ освобождения лока + try + { + OnCacheCleared?.Invoke(); + } + catch (Exception ex) + { + Log.Warn($"[AudioCache] OnCacheCleared handler error: {ex.Message}"); + } + } + + /// + /// Очищает папку Downloads. + /// + public static async Task ClearDownloadsAsync(CancellationToken ct = default) + { + await Task.Run(() => + { + try + { + var dir = new DirectoryInfo(G.Folder.Downloads); + if (!dir.Exists) + return; + + Log.Info("[AudioCache] Clearing downloads folder..."); + + foreach (var file in dir.GetFiles()) + { + try + { + file.Delete(); + } + catch (Exception ex) + { + Log.Warn($"[AudioCache] Failed to delete {file.Name}: {ex.Message}"); + } + } + + Log.Info("[AudioCache] Downloads cleared"); + } + catch (Exception ex) + { + Log.Error($"[AudioCache] ClearDownloadsAsync error: {ex.Message}"); + } + }, ct); + } + + /// + /// Удаляет кэш конкретного трека (все форматы). + /// + public void RemoveTrackCache(string trackId) + { + if (!_trackIndex.TryGetValue(trackId, out var keys)) + return; + + var keysToRemove = keys.ToList(); + + foreach (var key in keysToRemove) + { + RemoveCache(key); + } + + Log.Debug($"[AudioCache] Removed {keysToRemove.Count} cache entries for track {trackId}"); + } + + /// + /// Удаляет неполные/повреждённые кэши. + /// + public async Task RemoveIncompleteAsync(CancellationToken ct = default) + { + var incomplete = _entries + .Where(kv => !kv.Value.IsComplete) + .Select(kv => kv.Key) + .ToList(); + + foreach (var key in incomplete) + { + RemoveCache(key); + } + + if (incomplete.Count > 0) + { + Log.Info($"[AudioCache] Removed {incomplete.Count} incomplete cache entries"); + await SaveIndexAsync(); + } + } + + /// + /// Проверяет целостность кэша и удаляет сиротские файлы. + /// + public async Task ValidateAndCleanupAsync(CancellationToken ct = default) + { + // 1. Удаляем записи без файлов + var orphanedEntries = new List(); + + foreach (var (key, entry) in _entries) + { + var filePath = GetCachePath(key); + if (!File.Exists(filePath)) + { + orphanedEntries.Add(key); + } + else + { + // Обновляем кэшированный размер + UpdateFileSizeCache(entry); + } + } + + foreach (var key in orphanedEntries) + { + if (_entries.TryRemove(key, out var entry)) + { + RemoveFromTrackIndex(entry.TrackId, key); + } + } + + // 2. Удаляем файлы без записей + var validFiles = _entries.Keys + .Select(GetCachePath) + .ToHashSet(StringComparer.OrdinalIgnoreCase); + + var dir = new DirectoryInfo(_cacheDirectory); + if (dir.Exists) + { + foreach (var file in dir.GetFiles($"*{CacheFileExtension}")) + { + if (!validFiles.Contains(file.FullName)) + { + try + { + file.Delete(); + Log.Debug($"[AudioCache] Deleted orphaned file: {file.Name}"); + } + catch { } + } + } + } + + if (orphanedEntries.Count > 0) + { + Log.Info($"[AudioCache] Validation: removed {orphanedEntries.Count} orphaned entries"); + await SaveIndexAsync(); + } + } + + #endregion + + #region Private Helpers + + /// + /// Добавляет cacheKey в reverse index для trackId. + /// + private void AddToTrackIndex(string trackId, string cacheKey) + { + _trackIndex.AddOrUpdate( + trackId, + _ => new List { cacheKey }, + (_, list) => + { + if (!list.Contains(cacheKey)) + list.Add(cacheKey); + return list; + }); + } + + /// + /// Удаляет cacheKey из reverse index. + /// + private void RemoveFromTrackIndex(string trackId, string cacheKey) + { + if (_trackIndex.TryGetValue(trackId, out var list)) + { + list.Remove(cacheKey); + if (list.Count == 0) + _trackIndex.TryRemove(trackId, out _); + } + } + + /// + /// Обновляет кэшированный размер файла в entry (без IO при следующих вызовах GetStats). + /// + private void UpdateFileSizeCache(CacheEntry entry) + { + try + { + var filePath = GetCachePath(entry.CacheKey); + if (File.Exists(filePath)) + { + entry.ActualFileSize = new FileInfo(filePath).Length; + } + } + catch + { + // Игнорируем ошибки IO при обновлении размера + } + } + + private void LoadIndex() + { + var indexPath = Path.Combine(_cacheDirectory, CacheMetadataFileName); + + if (!File.Exists(indexPath)) + return; + + try + { + var json = File.ReadAllText(indexPath); + var entries = JsonSerializer.Deserialize>(json); + + if (entries != null) + { + foreach (var entry in entries) + { + if (string.IsNullOrEmpty(entry.CacheKey)) + continue; + + var filePath = GetCachePath(entry.CacheKey); + if (File.Exists(filePath)) + { + entry.RestoreChunkMask(); + UpdateFileSizeCache(entry); + _entries.TryAdd(entry.CacheKey, entry); + AddToTrackIndex(entry.TrackId, entry.CacheKey); + } + } + } + + Log.Debug($"[AudioCache] Loaded {_entries.Count} entries"); + } + catch (Exception ex) + { + Log.Warn($"[AudioCache] Failed to load index: {ex.Message}"); + } + } + + private async Task SaveIndexAsync() + { + if (_disposed) return; + + if (!await _saveLock.WaitAsync(CacheSaveLockTimeoutMs)) + return; + + try + { + var indexPath = Path.Combine(_cacheDirectory, CacheMetadataFileName); + var entries = _entries.Values.ToList(); + + foreach (var entry in entries) + { + entry.SaveChunkMask(); + } + + var json = JsonSerializer.Serialize(entries, new JsonSerializerOptions + { + WriteIndented = true + }); + + await File.WriteAllTextAsync(indexPath, json); + } + catch (Exception ex) + { + Log.Warn($"[AudioCache] Failed to save index: {ex.Message}"); + } + finally + { + _saveLock.Release(); + } + } + + private async Task AutoSaveLoopAsync(CancellationToken ct) + { + while (!ct.IsCancellationRequested) + { + try + { + await Task.Delay(CacheAutoSaveIntervalMs, ct); + await SaveIndexAsync(); + } + catch (OperationCanceledException) + { + break; + } + catch (Exception ex) + { + Log.Warn($"[AudioCache] Auto-save error: {ex.Message}"); + } + } + } + + #endregion + + #region Dispose + + public void Dispose() + { + if (_disposed) return; + _disposed = true; + + _timerCts.Cancel(); + + try { _autoSaveTask.Wait(TimeSpan.FromSeconds(2)); } + catch { } + + try { SaveIndexAsync().Wait(TimeSpan.FromSeconds(2)); } + catch { } + + _timerCts.Dispose(); + _saveLock.Dispose(); + } + + public async ValueTask DisposeAsync() + { + if (_disposed) return; + _disposed = true; + + _timerCts.Cancel(); + + try { await _autoSaveTask.WaitAsync(TimeSpan.FromSeconds(2)); } + catch { } + + await SaveIndexAsync(); + + _timerCts.Dispose(); + _saveLock.Dispose(); + } + + #endregion +} + +public sealed class CacheEntry +{ + public string CacheKey { get; init; } = ""; + public string TrackId { get; init; } = ""; + public string OriginalUrl { get; set; } = ""; + public long TotalSize { get; init; } + public AudioFormat Format { get; init; } + public AudioCodec Codec { get; set; } + public int Bitrate { get; set; } + public long DurationMs { get; set; } = -1; + public int ChunkSize { get; init; } + public int TotalChunks { get; init; } + + private int _downloadedChunks; + + public int DownloadedChunks + { + get => Volatile.Read(ref _downloadedChunks); + set => Volatile.Write(ref _downloadedChunks, value); + } + + public DateTime CreatedAt { get; init; } + public DateTime LastAccessedAt { get; set; } + public DateTime? CompletedAt { get; set; } + public bool IsComplete { get; set; } + + /// + /// Кэшированный размер файла (обновляется при MarkComplete/WriteChunk). + /// Избегаем IO при GetStats(). + /// + public long ActualFileSize { get; set; } + + public string? ChunkMaskData { get; set; } + + [JsonIgnore] + private int[]? _chunkBits; + + [JsonIgnore] + public double DownloadProgress => TotalChunks == 0 ? 0 : (double)DownloadedChunks / TotalChunks * 100; + + public bool IsChunkDownloaded(int index) + { + EnsureChunkBits(); + if (index < 0 || index >= TotalChunks) return false; + return (Volatile.Read(ref _chunkBits![index >> 5]) & (1 << (index & 31))) != 0; + } + + public void MarkChunkDownloaded(int index) + { + EnsureChunkBits(); + if (index < 0 || index >= TotalChunks) return; + + int word = index >> 5; + int bit = 1 << (index & 31); + + int current = Volatile.Read(ref _chunkBits![word]); + if ((current & bit) == 0) + { + int original; + do + { + original = current; + current = Interlocked.CompareExchange(ref _chunkBits![word], original | bit, original); + } while (current != original); + + if ((original & bit) == 0) + { + Interlocked.Increment(ref _downloadedChunks); + } + } + } + + public void SaveChunkMask() + { + if (_chunkBits == null) return; + + var bytes = new byte[_chunkBits.Length * 4]; + Buffer.BlockCopy(_chunkBits, 0, bytes, 0, bytes.Length); + ChunkMaskData = Convert.ToBase64String(bytes); + } + + public void RestoreChunkMask() + { + if (string.IsNullOrEmpty(ChunkMaskData)) return; + + EnsureChunkBits(); + + try + { + var bytes = Convert.FromBase64String(ChunkMaskData); + Buffer.BlockCopy(bytes, 0, _chunkBits!, 0, Math.Min(bytes.Length, _chunkBits!.Length * 4)); + + int count = 0; + for (int i = 0; i < TotalChunks; i++) + { + if (IsChunkDownloaded(i)) + count++; + } + Volatile.Write(ref _downloadedChunks, count); + } + catch { } + } + + private void EnsureChunkBits() + { + _chunkBits ??= new int[(TotalChunks + 31) / 32]; + } +} + +public readonly struct CacheStats +{ + public int TotalEntries { get; init; } + public int CompleteEntries { get; init; } + public int PartialEntries { get; init; } + public long TotalSizeBytes { get; init; } + public long MaxSizeBytes { get; init; } + + public double UsagePercent => MaxSizeBytes == 0 ? 0 : (double)TotalSizeBytes / MaxSizeBytes * 100; + + public string TotalSizeFormatted => FormatSize(TotalSizeBytes); + public string MaxSizeFormatted => FormatSize(MaxSizeBytes); + + private static string FormatSize(long bytes) + { + if (bytes < 1024) return $"{bytes} B"; + if (bytes < 1024 * 1024) return $"{bytes / 1024.0:F1} KB"; + if (bytes < 1024 * 1024 * 1024) return $"{bytes / 1024.0 / 1024.0:F1} MB"; + return $"{bytes / 1024.0 / 1024.0 / 1024.0:F2} GB"; + } +} \ No newline at end of file diff --git a/Core/Audio/Decoders/AacDecoder.cs b/Core/Audio/Decoders/AacDecoder.cs new file mode 100644 index 0000000..35bd0e8 --- /dev/null +++ b/Core/Audio/Decoders/AacDecoder.cs @@ -0,0 +1,357 @@ +using SharpJaad.AAC; +using LMP.Core.Audio.Interfaces; +using LMP.Core.Exceptions; + +namespace LMP.Core.Audio.Decoders; + +public sealed class AacDecoder : IAudioDecoder +{ + private const int DefaultSampleRate = 44100; + private const int DefaultChannels = 2; + private const int DefaultMaxFrameSize = 2048; + private const int MaxConsecutiveSilentErrors = 15; + + private Decoder? _decoder; + private DecoderConfig? _config; + private SampleBuffer? _sampleBuffer; + private byte[]? _originalAsc; + + private readonly int _requestedSampleRate; + private readonly int _requestedChannels; + private bool _initialized; + private bool _disposed; + + private bool _isHeAac; + private int _outputSampleRate; + private int _consecutiveErrors; + + public AacDecoder(int sampleRate = DefaultSampleRate, int channels = DefaultChannels) + { + _requestedSampleRate = sampleRate; + _requestedChannels = channels; + + Log.Debug($"[AacDecoder] Created: requested {sampleRate}Hz, {channels}ch"); + } + + public int SampleRate => _outputSampleRate > 0 ? _outputSampleRate : + _config?.GetSampleFrequency().GetFrequency() ?? _requestedSampleRate; + public int Channels => (int?)_config?.GetChannelConfiguration() ?? _requestedChannels; + public int MaxFrameSize => _isHeAac ? DefaultMaxFrameSize * 2 : + _config?.GetFrameLength() ?? DefaultMaxFrameSize; + public AudioCodec Codec => AudioCodec.Aac; + public bool IsInitialized => _initialized; + + public void Initialize(byte[] decoderSpecificInfo) + { + if (_initialized) return; + + if (decoderSpecificInfo == null || decoderSpecificInfo.Length < 2) + throw new ArgumentException("Invalid decoder specific info", nameof(decoderSpecificInfo)); + + try + { + _originalAsc = (byte[])decoderSpecificInfo.Clone(); + var ascInfo = ParseAudioSpecificConfig(decoderSpecificInfo); + + Log.Debug($"[AacDecoder] ASC analysis: objectType={ascInfo.ObjectType}, " + + $"baseRate={ascInfo.BaseSampleRate}, outputRate={ascInfo.OutputSampleRate}, " + + $"channels={ascInfo.Channels}, isHE-AAC={ascInfo.IsHeAac}"); + + if (ascInfo.IsHeAac) + InitializeHeAac(ascInfo); + else + InitializeStandard(decoderSpecificInfo); + + _sampleBuffer = new SampleBuffer(); + _sampleBuffer.SetBigEndian(false); + _initialized = true; + } + catch (Exception ex) + { + throw new AudioDecoderException($"Failed to initialize AAC decoder: {ex.Message}"); + } + } + + private void InitializeHeAac(AscInfo ascInfo) + { + _isHeAac = true; + _outputSampleRate = ascInfo.OutputSampleRate; + + byte[] modifiedAsc = CreateAacLcAsc(ascInfo); + + Log.Debug($"[AacDecoder] HE-AAC: using modified ASC for core decoder: " + + $"{BitConverter.ToString(modifiedAsc)}"); + + _config = DecoderConfig.ParseMP4DecoderSpecificInfo(modifiedAsc); + _config.SetSBRPresent(true); + _decoder = new Decoder(_config); + + Log.Info($"[AacDecoder] HE-AAC initialized: core={ascInfo.BaseSampleRate}Hz, " + + $"output={_outputSampleRate}Hz, channels={ascInfo.Channels}"); + } + + private void InitializeStandard(byte[] decoderSpecificInfo) + { + _isHeAac = false; + + _config = DecoderConfig.ParseMP4DecoderSpecificInfo(decoderSpecificInfo); + _decoder = new Decoder(_config); + _outputSampleRate = _config.GetSampleFrequency().GetFrequency(); + + Log.Debug($"[AacDecoder] AAC-LC initialized: profile={_config.GetProfile()}, " + + $"sampleRate={_config.GetSampleFrequency()}, channels={_config.GetChannelConfiguration()}"); + } + + /// + /// Полностью пересоздаёт внутренний декодер из оригинального ASC. + /// Вызывается после seek или при неисправимых ошибках. + /// + private void RecreateDecoder() + { + if (_originalAsc == null || _config == null) return; + + try + { + if (_isHeAac) + { + var ascInfo = ParseAudioSpecificConfig(_originalAsc); + byte[] modifiedAsc = CreateAacLcAsc(ascInfo); + _config = DecoderConfig.ParseMP4DecoderSpecificInfo(modifiedAsc); + _config.SetSBRPresent(true); + } + else + { + _config = DecoderConfig.ParseMP4DecoderSpecificInfo(_originalAsc); + } + + _decoder = new Decoder(_config); + _sampleBuffer = new SampleBuffer(); + _sampleBuffer.SetBigEndian(false); + _consecutiveErrors = 0; + + Log.Debug("[AacDecoder] Decoder recreated successfully"); + } + catch (Exception ex) + { + Log.Warn($"[AacDecoder] Recreate failed: {ex.Message}"); + } + } + + private static byte[] CreateAacLcAsc(AscInfo info) + { + int freqIndex = GetSampleFrequencyIndex(info.BaseSampleRate); + int objectType = 2; // AAC-LC + + byte byte0 = (byte)((objectType << 3) | ((freqIndex >> 1) & 0x07)); + byte byte1 = (byte)(((freqIndex & 0x01) << 7) | ((info.Channels & 0x0F) << 3)); + + return [byte0, byte1]; + } + + private static AscInfo ParseAudioSpecificConfig(byte[] asc) + { + if (asc.Length < 2) + { + return new AscInfo + { + ObjectType = 2, BaseSampleRate = 44100, + OutputSampleRate = 44100, Channels = 2, IsHeAac = false + }; + } + + int audioObjectType = (asc[0] >> 3) & 0x1F; + int samplingFrequencyIndex = ((asc[0] & 0x07) << 1) | ((asc[1] >> 7) & 0x01); + int channelConfig = (asc[1] >> 3) & 0x0F; + + int baseSampleRate = GetSampleRateFromIndex(samplingFrequencyIndex); + + bool isHeAac = audioObjectType == 5 || audioObjectType == 29; + int outputSampleRate = baseSampleRate; + if (isHeAac && baseSampleRate > 0) + outputSampleRate = baseSampleRate * 2; + + int channels = channelConfig switch + { + 1 => 1, 2 => 2, 3 => 3, 4 => 4, 5 => 5, 6 => 6, 7 => 8, _ => 2 + }; + + return new AscInfo + { + ObjectType = audioObjectType, + BaseSampleRate = baseSampleRate, + OutputSampleRate = outputSampleRate, + Channels = channels, + IsHeAac = isHeAac + }; + } + + private static int GetSampleRateFromIndex(int index) + { + int[] rates = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, + 16000, 12000, 11025, 8000, 7350, 0, 0, 0]; + return index >= 0 && index < rates.Length ? rates[index] : 44100; + } + + private static int GetSampleFrequencyIndex(int sampleRate) + { + return sampleRate switch + { + 96000 => 0, 88200 => 1, 64000 => 2, 48000 => 3, 44100 => 4, + 32000 => 5, 24000 => 6, 22050 => 7, 16000 => 8, 12000 => 9, + 11025 => 10, 8000 => 11, 7350 => 12, _ => 4 + }; + } + + private readonly record struct AscInfo + { + public int ObjectType { get; init; } + public int BaseSampleRate { get; init; } + public int OutputSampleRate { get; init; } + public int Channels { get; init; } + public bool IsHeAac { get; init; } + } + + public void Initialize(Profile profile, SampleFrequency sampleFrequency, int channels) + { + if (_initialized) return; + + try + { + _config = new DecoderConfig(); + _config.SetProfile(profile); + _config.SetSampleFrequency(sampleFrequency); + _config.SetChannelConfiguration((ChannelConfiguration)channels); + + _decoder = new Decoder(_config); + _sampleBuffer = new SampleBuffer(); + _sampleBuffer.SetBigEndian(false); + + _outputSampleRate = sampleFrequency.GetFrequency(); + _initialized = true; + + Log.Debug($"[AacDecoder] Initialized: profile={profile}, rate={sampleFrequency}, ch={channels}"); + } + catch (Exception ex) + { + throw new AudioDecoderException($"Failed to initialize AAC decoder: {ex.Message}"); + } + } + + public void Initialize(Profile profile, int sampleRate, int channels) + { + Initialize(profile, GetSampleFrequency(sampleRate), channels); + } + + private void EnsureInitialized() + { + if (_initialized) return; + Initialize(Profile.AAC_LC, GetSampleFrequency(_requestedSampleRate), _requestedChannels); + } + + public int Decode(ReadOnlySpan encodedData, Span outputBuffer) + { + ObjectDisposedException.ThrowIf(_disposed, this); + EnsureInitialized(); + + if (encodedData.IsEmpty) + { + int silenceSamples = MaxFrameSize; + int totalSamples = silenceSamples * Channels; + outputBuffer[..Math.Min(totalSamples, outputBuffer.Length)].Clear(); + return silenceSamples; + } + + try + { + byte[] frameData = encodedData.ToArray(); + _decoder!.DecodeFrame(frameData, _sampleBuffer!); + + byte[] pcmData = _sampleBuffer!.Data; + int sampleCount = pcmData.Length / (sizeof(short) * Channels); + + ConvertBytesToFloat(pcmData, outputBuffer, sampleCount * Channels); + + _consecutiveErrors = 0; + return sampleCount; + } + catch (Exception ex) when (ex is AACException or InvalidCastException or IndexOutOfRangeException) + { + _consecutiveErrors++; + + if (_consecutiveErrors <= MaxConsecutiveSilentErrors) + { + if (_consecutiveErrors <= 3) + Log.Debug($"[AacDecoder] Decode error (attempt {_consecutiveErrors}): {ex.Message}"); + + // Каждые 5 ошибок пересоздаём декодер + if (_consecutiveErrors % 5 == 0) + RecreateDecoder(); + + int silenceSamples = MaxFrameSize; + int totalSamples = silenceSamples * Channels; + outputBuffer[..Math.Min(totalSamples, outputBuffer.Length)].Clear(); + return silenceSamples; + } + + // Последняя попытка: полное пересоздание + RecreateDecoder(); + + Log.Warn($"[AacDecoder] Persistent decode error after {_consecutiveErrors} attempts: {ex.Message}"); + + // Возвращаем тишину вместо исключения — не крашим воспроизведение + int silence = MaxFrameSize; + int total = silence * Channels; + outputBuffer[..Math.Min(total, outputBuffer.Length)].Clear(); + return silence; + } + } + + public int DecodeWithReset(ReadOnlySpan encodedData, Span outputBuffer) + { + RecreateDecoder(); + return Decode(encodedData, outputBuffer); + } + + private static void ConvertBytesToFloat(byte[] pcmBytes, Span output, int sampleCount) + { + const float scale = 1f / 32768f; + int count = Math.Min(sampleCount, output.Length); + + for (int i = 0; i < count; i++) + { + short sample = BitConverter.ToInt16(pcmBytes, i * sizeof(short)); + output[i] = sample * scale; + } + } + + private static SampleFrequency GetSampleFrequency(int rate) + { + return rate switch + { + 96000 => SampleFrequency.SAMPLE_FREQUENCY_96000, + 88200 => SampleFrequency.SAMPLE_FREQUENCY_88200, + 64000 => SampleFrequency.SAMPLE_FREQUENCY_64000, + 48000 => SampleFrequency.SAMPLE_FREQUENCY_48000, + 44100 => SampleFrequency.SAMPLE_FREQUENCY_44100, + 32000 => SampleFrequency.SAMPLE_FREQUENCY_32000, + 24000 => SampleFrequency.SAMPLE_FREQUENCY_24000, + 22050 => SampleFrequency.SAMPLE_FREQUENCY_22050, + 16000 => SampleFrequency.SAMPLE_FREQUENCY_16000, + 12000 => SampleFrequency.SAMPLE_FREQUENCY_12000, + 11025 => SampleFrequency.SAMPLE_FREQUENCY_11025, + 8000 => SampleFrequency.SAMPLE_FREQUENCY_8000, + _ => SampleFrequency.SAMPLE_FREQUENCY_44100 + }; + } + + public void Dispose() + { + if (_disposed) return; + _disposed = true; + + _decoder = null; + _config = null; + _sampleBuffer = null; + _originalAsc = null; + } +} \ No newline at end of file diff --git a/Core/Audio/Decoders/OpusDecoder.cs b/Core/Audio/Decoders/OpusDecoder.cs new file mode 100644 index 0000000..44a51f4 --- /dev/null +++ b/Core/Audio/Decoders/OpusDecoder.cs @@ -0,0 +1,106 @@ +using Concentus; +using LMP.Core.Audio.Interfaces; +using LMP.Core.Exceptions; + +namespace LMP.Core.Audio.Decoders; + +/// +/// OPUS декодер на базе Concentus. +/// +public sealed class OpusDecoder : IAudioDecoder +{ + private const int MaxFrameDurationMs = 120; + + private readonly IOpusDecoder _decoder; + private readonly short[] _shortBuffer; + private bool _disposed; + + public OpusDecoder(int sampleRate = 48000, int channels = 2) + { + SampleRate = sampleRate; + Channels = channels; + MaxFrameSize = sampleRate * MaxFrameDurationMs / 1000; + _shortBuffer = new short[MaxFrameSize * channels]; + + _decoder = OpusCodecFactory.CreateDecoder(sampleRate, channels); + + Log.Debug($"[OpusDecoder] Created: {sampleRate}Hz, {channels}ch"); + } + + public int SampleRate { get; } + public int Channels { get; } + public int MaxFrameSize { get; } + public AudioCodec Codec => AudioCodec.Opus; + public bool IsInitialized => true; // Opus не требует отдельной инициализации + + public int Decode(ReadOnlySpan encodedData, Span outputBuffer) + { + ObjectDisposedException.ThrowIf(_disposed, this); + + if (encodedData.IsEmpty) + return DecodePLC(outputBuffer); + + try + { + Span shortSpan = _shortBuffer.AsSpan(0, MaxFrameSize * Channels); + int samples = _decoder.Decode(encodedData, shortSpan, MaxFrameSize); + + ConvertToFloat(shortSpan[..(samples * Channels)], outputBuffer); + return samples; + } + catch (Exception ex) + { + Log.Warn($"[OpusDecoder] Decode error: {ex.Message}"); + throw new AudioDecoderException($"OPUS decode failed: {ex.Message}"); + } + } + + public int DecodeWithReset(ReadOnlySpan encodedData, Span outputBuffer) + { + _decoder.ResetState(); + return Decode(encodedData, outputBuffer); + } + + private int DecodePLC(Span outputBuffer) + { + try + { + Span shortSpan = _shortBuffer.AsSpan(); + int samples = _decoder.Decode(ReadOnlySpan.Empty, shortSpan, MaxFrameSize); + ConvertToFloat(shortSpan[..(samples * Channels)], outputBuffer); + return samples; + } + catch + { + // Fallback: возвращаем тишину (960 samples = 20ms @ 48kHz) + const int fallbackSamples = 960; + int totalSamples = fallbackSamples * Channels; + outputBuffer[..Math.Min(totalSamples, outputBuffer.Length)].Clear(); + return fallbackSamples; + } + } + + private static void ConvertToFloat(ReadOnlySpan src, Span dst) + { + const float scale = 1f / 32768f; + int len = Math.Min(src.Length, dst.Length); + + for (int i = 0; i < len; i++) + { + dst[i] = src[i] * scale; + } + } + + public void Dispose() + { + if (_disposed) return; + _disposed = true; + + _decoder.ResetState(); + + if (_decoder is IDisposable d) + { + d.Dispose(); + } + } +} \ No newline at end of file diff --git a/Core/Audio/Helpers/CircularBuffer.cs b/Core/Audio/Helpers/CircularBuffer.cs new file mode 100644 index 0000000..2f0ccac --- /dev/null +++ b/Core/Audio/Helpers/CircularBuffer.cs @@ -0,0 +1,193 @@ +using System.Runtime.CompilerServices; + +namespace LMP.Core.Audio.Helpers; + +/// +/// Lock-free циклический буфер для single-producer-single-consumer сценария. +/// Оптимизирован для аудио данных с правильными memory barriers. +/// +/// Тип элементов (unmanaged) +public sealed class CircularBuffer where T : unmanaged +{ + private readonly T[] _buffer; + private readonly int _mask; + + private int _head; // Позиция записи (producer) + private int _tail; // Позиция чтения (consumer) + + /// + /// Создаёт циклический буфер указанной ёмкости. + /// + /// Минимальная ёмкость (округляется до степени 2) + public CircularBuffer(int capacity) + { + Capacity = RoundUpToPowerOf2(Math.Max(capacity, 16)); + _mask = Capacity - 1; + _buffer = new T[Capacity]; + } + + /// Текущее количество элементов в буфере + public int Count + { + [MethodImpl(MethodImplOptions.AggressiveInlining)] + get + { + // Читаем head первым (producer пишет сюда) + int head = Volatile.Read(ref _head); + // Затем tail (consumer пишет сюда) + int tail = Volatile.Read(ref _tail); + return (head - tail + Capacity) & _mask; + } + } + + /// Ёмкость буфера + public int Capacity { get; } + + /// Свободное место в буфере (оставляем 1 слот для различения full/empty) + public int Available + { + [MethodImpl(MethodImplOptions.AggressiveInlining)] + get => Capacity - Count - 1; + } + + /// Буфер пуст + public bool IsEmpty + { + [MethodImpl(MethodImplOptions.AggressiveInlining)] + get => Volatile.Read(ref _head) == Volatile.Read(ref _tail); + } + + /// + /// Записывает данные в буфер (producer). + /// Thread-safe для одного producer. + /// + /// Данные для записи + /// Количество записанных элементов + [MethodImpl(MethodImplOptions.AggressiveInlining)] + public int Write(ReadOnlySpan data) + { + int head = Volatile.Read(ref _head); + int tail = Volatile.Read(ref _tail); + + int available = (Capacity - 1) - ((head - tail + Capacity) & _mask); + int toWrite = Math.Min(data.Length, available); + + if (toWrite == 0) return 0; + + int firstPart = Math.Min(toWrite, Capacity - head); + + // Копируем первую часть (до конца массива) + data[..firstPart].CopyTo(_buffer.AsSpan(head, firstPart)); + + // Копируем вторую часть (с начала массива) если нужно + if (toWrite > firstPart) + { + data.Slice(firstPart, toWrite - firstPart) + .CopyTo(_buffer.AsSpan(0, toWrite - firstPart)); + } + + // Release fence: все записи в буфер видны перед обновлением head + Volatile.Write(ref _head, (head + toWrite) & _mask); + + return toWrite; + } + + /// + /// Читает данные из буфера (consumer). + /// Thread-safe для одного consumer. + /// + /// Буфер для чтения + /// Количество прочитанных элементов + [MethodImpl(MethodImplOptions.AggressiveInlining)] + public int Read(Span output) + { + int tail = Volatile.Read(ref _tail); + int head = Volatile.Read(ref _head); + + int count = (head - tail + Capacity) & _mask; + int toRead = Math.Min(output.Length, count); + + if (toRead == 0) return 0; + + int firstPart = Math.Min(toRead, Capacity - tail); + + // Копируем первую часть + _buffer.AsSpan(tail, firstPart).CopyTo(output[..firstPart]); + + // Копируем вторую часть если нужно + if (toRead > firstPart) + { + _buffer.AsSpan(0, toRead - firstPart) + .CopyTo(output.Slice(firstPart, toRead - firstPart)); + } + + // Release fence: все чтения завершены перед обновлением tail + Volatile.Write(ref _tail, (tail + toRead) & _mask); + + return toRead; + } + + /// + /// Читает данные без удаления из буфера (peek). + /// + public int Peek(Span output) + { + int tail = Volatile.Read(ref _tail); + int head = Volatile.Read(ref _head); + + int count = (head - tail + Capacity) & _mask; + int toRead = Math.Min(output.Length, count); + + if (toRead == 0) return 0; + + int firstPart = Math.Min(toRead, Capacity - tail); + _buffer.AsSpan(tail, firstPart).CopyTo(output[..firstPart]); + + if (toRead > firstPart) + { + _buffer.AsSpan(0, toRead - firstPart) + .CopyTo(output.Slice(firstPart, toRead - firstPart)); + } + + return toRead; + } + + /// + /// Пропускает указанное количество элементов. + /// + public int Skip(int count) + { + int tail = Volatile.Read(ref _tail); + int head = Volatile.Read(ref _head); + + int available = (head - tail + Capacity) & _mask; + int toSkip = Math.Min(count, available); + + if (toSkip > 0) + { + Volatile.Write(ref _tail, (tail + toSkip) & _mask); + } + + return toSkip; + } + + /// + /// Очищает буфер. + /// + public void Clear() + { + Volatile.Write(ref _head, 0); + Volatile.Write(ref _tail, 0); + } + + private static int RoundUpToPowerOf2(int value) + { + value--; + value |= value >> 1; + value |= value >> 2; + value |= value >> 4; + value |= value >> 8; + value |= value >> 16; + return value + 1; + } +} \ No newline at end of file diff --git a/Core/Audio/Helpers/ConcurrentBitArray.cs b/Core/Audio/Helpers/ConcurrentBitArray.cs new file mode 100644 index 0000000..b58d602 --- /dev/null +++ b/Core/Audio/Helpers/ConcurrentBitArray.cs @@ -0,0 +1,82 @@ +using System.Numerics; +using System.Runtime.CompilerServices; + +namespace LMP.Core.Audio.Helpers; + +/// +/// Lock-free потокобезопасный битовый массив. +/// +public sealed class ConcurrentBitArray(int length) +{ + private readonly int[] _data = new int[(length + 31) / 32]; + + public int Length { get; } = length; + + [MethodImpl(MethodImplOptions.AggressiveInlining)] + public bool Get(int index) + { + if ((uint)index >= (uint)Length) return false; + return (Volatile.Read(ref _data[index >> 5]) & (1 << (index & 31))) != 0; + } + + [MethodImpl(MethodImplOptions.AggressiveInlining)] + public void Set(int index, bool value) + { + if ((uint)index >= (uint)Length) return; + + int word = index >> 5; + int bit = 1 << (index & 31); + + if (value) + { + Interlocked.Or(ref _data[word], bit); + } + else + { + Interlocked.And(ref _data[word], ~bit); + } + } + + public int PopCount() + { + int count = 0; + for (int i = 0; i < _data.Length; i++) + { + count += BitOperations.PopCount((uint)Volatile.Read(ref _data[i])); + } + return Math.Min(count, Length); + } + + public void Clear() + { + Array.Clear(_data); + } + + /// + /// Сериализует в Base64 для сохранения. + /// + public string ToBase64() + { + var bytes = new byte[_data.Length * 4]; + Buffer.BlockCopy(_data, 0, bytes, 0, bytes.Length); + return Convert.ToBase64String(bytes); + } + + /// + /// Загружает из Base64. + /// + public void FromBase64(string base64) + { + if (string.IsNullOrEmpty(base64)) return; + + try + { + var bytes = Convert.FromBase64String(base64); + Buffer.BlockCopy(bytes, 0, _data, 0, Math.Min(bytes.Length, _data.Length * 4)); + } + catch + { + // Ignore invalid data + } + } +} \ No newline at end of file diff --git a/Core/Audio/Helpers/FrameBuffer.cs b/Core/Audio/Helpers/FrameBuffer.cs new file mode 100644 index 0000000..b269e67 --- /dev/null +++ b/Core/Audio/Helpers/FrameBuffer.cs @@ -0,0 +1,120 @@ +using System.Collections.Concurrent; +using LMP.Core.Audio.Interfaces; + +namespace LMP.Core.Audio.Helpers; + +/// +/// Буфер фреймов для producer-consumer паттерна. +/// Producer: сетевой поток загружает фреймы. +/// Consumer: декодер читает фреймы. +/// +public sealed class FrameBuffer(int maxFrames = 100) : IDisposable +{ + private readonly ConcurrentQueue _frames = new(); + private readonly SemaphoreSlim _dataAvailable = new(0); + private readonly SemaphoreSlim _spaceAvailable = new(maxFrames, maxFrames); + private readonly int _maxFrames = maxFrames; + + private volatile bool _isCompleted; + private volatile bool _isDisposed; + + /// Количество фреймов в буфере + public int Count => _frames.Count; + + /// Буфер заполнен + public bool IsFull => _frames.Count >= _maxFrames; + + /// Достигнут конец потока + public bool IsCompleted => _isCompleted && _frames.IsEmpty; + + /// + /// Добавляет фрейм в буфер (producer). + /// + public async ValueTask WriteAsync(AudioFrame frame, CancellationToken ct = default) + { + if (_isDisposed || _isCompleted) return false; + + await _spaceAvailable.WaitAsync(ct).ConfigureAwait(false); + + if (_isDisposed) return false; + + _frames.Enqueue(frame); + _dataAvailable.Release(); + + return true; + } + + /// + /// Читает фрейм из буфера (consumer). + /// + public async ValueTask ReadAsync(CancellationToken ct = default) + { + while (!_isDisposed) + { + if (_frames.TryDequeue(out var frame)) + { + _spaceAvailable.Release(); + return frame; + } + + if (_isCompleted && _frames.IsEmpty) + { + return null; + } + + try + { + await _dataAvailable.WaitAsync(ct).ConfigureAwait(false); + } + catch (OperationCanceledException) + { + return null; + } + } + + return null; + } + + /// + /// Пытается прочитать фрейм без ожидания. + /// + public bool TryRead(out AudioFrame frame) + { + if (_frames.TryDequeue(out frame)) + { + _spaceAvailable.Release(); + return true; + } + return false; + } + + /// + /// Отмечает конец потока. + /// + public void Complete() + { + _isCompleted = true; + _dataAvailable.Release(); // Разбудить ждущих + } + + /// + /// Очищает буфер. + /// + public void Clear() + { + while (_frames.TryDequeue(out _)) + { + _spaceAvailable.Release(); + } + _isCompleted = false; + } + + public void Dispose() + { + if (_isDisposed) return; + _isDisposed = true; + + _dataAvailable.Dispose(); + _spaceAvailable.Dispose(); + } +} \ No newline at end of file diff --git a/Core/Audio/Helpers/WebMParser.cs b/Core/Audio/Helpers/WebMParser.cs new file mode 100644 index 0000000..c955d98 --- /dev/null +++ b/Core/Audio/Helpers/WebMParser.cs @@ -0,0 +1,783 @@ +using System.Buffers; +using System.Buffers.Binary; + +namespace LMP.Core.Audio.Helpers; + +/// +/// Парсер WebM/Matroska контейнера для извлечения OPUS пакетов. +/// +public sealed class WebMParser : IDisposable +{ + // EBML Element IDs + private const uint EBML_ID = 0x1A45DFA3; + private const uint SEGMENT_ID = 0x18538067; + private const uint CLUSTER_ID = 0x1F43B675; + private const uint SIMPLE_BLOCK_ID = 0xA3; + private const uint BLOCK_GROUP_ID = 0xA0; + private const uint TIMECODE_ID = 0xE7; + private const uint INFO_ID = 0x1549A966; + private const uint DURATION_ID = 0x4489; + private const uint TIMECODE_SCALE_ID = 0x2AD7B1; + private const uint TRACKS_ID = 0x1654AE6B; + private const uint TRACK_ENTRY_ID = 0xAE; + private const uint TRACK_NUMBER_ID = 0xD7; + private const uint TRACK_TYPE_ID = 0x83; + private const uint CODEC_PRIVATE_ID = 0x63A2; + private const uint AUDIO_ID = 0xE1; + private const uint SAMPLING_FREQUENCY_ID = 0xB5; + private const uint CHANNELS_ID = 0x9F; + private const uint CUES_ID = 0x1C53BB6B; + private const uint CUE_POINT_ID = 0xBB; + private const uint CUE_TIME_ID = 0xB3; + private const uint CUE_TRACK_POSITIONS_ID = 0xB7; + private const uint CUE_CLUSTER_POSITION_ID = 0xF1; + + // Lacing types + private const int LACING_NONE = 0; + private const int LACING_XIPH = 1; + private const int LACING_FIXED = 2; + private const int LACING_EBML = 3; + + private const long DEFAULT_TIMECODE_SCALE = 1_000_000; // 1ms в наносекундах + private const int ReadBufferSize = 64 * 1024; + + private readonly Stream _stream; + private readonly byte[] _readBuffer; + private readonly List _cuePoints = []; + + private long _segmentOffset; + private long _currentClusterTimecode; + private long _timecodeScale = DEFAULT_TIMECODE_SCALE; + private long _duration; + private int _audioTrackNumber = 1; + private bool _headersParsed; + + public readonly record struct CuePoint(long TimeMs, long ClusterOffset); + + public readonly record struct AudioBlock( + ReadOnlyMemory Data, + long TimestampMs, + bool IsKeyFrame + ); + + public WebMParser(Stream stream, int bufferSize = ReadBufferSize) + { + _stream = stream; + _readBuffer = new byte[bufferSize]; + } + + public long DurationMs => _duration * _timecodeScale / 1_000_000; + public IReadOnlyList CuePoints => _cuePoints; + public byte[]? CodecPrivate { get; private set; } + public int SampleRate { get; private set; } + public int Channels { get; private set; } = 2; + + public async ValueTask ParseHeadersAsync(CancellationToken ct = default) + { + if (_headersParsed) return true; + + try + { + var (id, size) = await ReadElementHeaderAsync(ct); + if (id != EBML_ID) return false; + + await SkipBytesAsync(size, ct); + + (id, size) = await ReadElementHeaderAsync(ct); + if (id != SEGMENT_ID) return false; + + _segmentOffset = _stream.Position; + + while (!ct.IsCancellationRequested) + { + long elementStart = _stream.Position; + (id, size) = await ReadElementHeaderAsync(ct); + + switch (id) + { + case INFO_ID: + await ParseInfoAsync(size, ct); + break; + + case TRACKS_ID: + await ParseTracksAsync(size, ct); + break; + + case CUES_ID: + await ParseCuesAsync(size, ct); + break; + + case CLUSTER_ID: + if (_stream.CanSeek) + { + _stream.Position = elementStart; + } + _headersParsed = true; + return true; + + default: + if (size > 0 && size < int.MaxValue) + { + await SkipBytesAsync(size, ct); + } + break; + } + } + + return false; + } + catch + { + return false; + } + } + + public async ValueTask ReadNextBlockAsync(CancellationToken ct = default) + { + while (!ct.IsCancellationRequested) + { + var (id, size) = await ReadElementHeaderAsync(ct); + + if (id == 0) return null; + + switch (id) + { + case CLUSTER_ID: + continue; + + case TIMECODE_ID: + // ReadUnsignedInt вместо ReadVInt! + var timecodeData = ArrayPool.Shared.Rent((int)size); + try + { + await ReadExactAsync(timecodeData.AsMemory(0, (int)size), ct); + _currentClusterTimecode = ReadUnsignedInt(timecodeData.AsSpan(0, (int)size)); + } + finally + { + ArrayPool.Shared.Return(timecodeData); + } + continue; + + case SIMPLE_BLOCK_ID: + return await ParseSimpleBlockAsync((int)size, ct); + + case BLOCK_GROUP_ID: + await SkipBytesAsync(size, ct); + continue; + + default: + if (size > 0 && size < int.MaxValue) + { + await SkipBytesAsync(size, ct); + } + continue; + } + } + + return null; + } + + public long? FindSeekPosition(long targetMs) + { + if (_cuePoints.Count == 0) return null; + + int low = 0, high = _cuePoints.Count - 1; + + while (low < high) + { + int mid = (low + high + 1) / 2; + if (_cuePoints[mid].TimeMs <= targetMs) + low = mid; + else + high = mid - 1; + } + + return _segmentOffset + _cuePoints[low].ClusterOffset; + } + + private async ValueTask ParseSimpleBlockAsync(int size, CancellationToken ct) + { + if (size < 4) return null; + + // Track Number — это VINT (используем ReadVInt!) + int trackNumberByte = await ReadByteAsync(ct); + if (trackNumberByte < 0) return null; + + int trackNumberLength = GetVIntLength((byte)trackNumberByte); + + long trackNumber; + if (trackNumberLength == 1) + { + trackNumber = trackNumberByte & 0x7F; // VINT mask для 1 байта + } + else + { + var trackBytes = ArrayPool.Shared.Rent(trackNumberLength); + try + { + trackBytes[0] = (byte)trackNumberByte; + await ReadExactAsync(trackBytes.AsMemory(1, trackNumberLength - 1), ct); + trackNumber = ReadVInt(trackBytes.AsSpan(0, trackNumberLength)); + } + finally + { + ArrayPool.Shared.Return(trackBytes); + } + } + + // Timecode offset (2 bytes, signed big-endian) + var timecodeBytes = ArrayPool.Shared.Rent(2); + short timecodeOffset; + try + { + await ReadExactAsync(timecodeBytes.AsMemory(0, 2), ct); + timecodeOffset = BinaryPrimitives.ReadInt16BigEndian(timecodeBytes); + } + finally + { + ArrayPool.Shared.Return(timecodeBytes); + } + + // Flags (1 byte) + int flags = await ReadByteAsync(ct); + if (flags < 0) return null; + + bool isKeyFrame = (flags & 0x80) != 0; + int lacingType = (flags >> 1) & 0x03; + + int headerSize = trackNumberLength + 2 + 1; + int dataSize = size - headerSize; + + if (dataSize <= 0) return null; + + // Skip non-audio tracks + if (trackNumber != _audioTrackNumber) + { + await SkipBytesAsync(dataSize, ct); + return null; + } + + // Handle lacing + if (lacingType != LACING_NONE) + { + return await ParseLacedBlockAsync(dataSize, lacingType, timecodeOffset, isKeyFrame, ct); + } + + // No lacing + var audioData = new byte[dataSize]; + await ReadExactAsync(audioData, ct); + + // Конвертируем в миллисекунды + long timestampMs = (_currentClusterTimecode + timecodeOffset) * _timecodeScale / 1_000_000; + + return new AudioBlock(audioData, timestampMs, isKeyFrame); + } + + private async ValueTask ParseLacedBlockAsync( + int dataSize, int lacingType, short timecodeOffset, bool isKeyFrame, CancellationToken ct) + { + int frameCount = await ReadByteAsync(ct); + if (frameCount < 0) return null; + frameCount++; + + dataSize--; + + int firstFrameSize; + int bytesToSkip; + + switch (lacingType) + { + case LACING_XIPH: + firstFrameSize = 0; + int totalSizeBytes = 0; + + while (true) + { + int b = await ReadByteAsync(ct); + if (b < 0) return null; + totalSizeBytes++; + firstFrameSize += b; + if (b < 255) break; + } + + for (int i = 1; i < frameCount - 1; i++) + { + while (true) + { + int b = await ReadByteAsync(ct); + if (b < 0) return null; + totalSizeBytes++; + if (b < 255) break; + } + } + + bytesToSkip = dataSize - totalSizeBytes - firstFrameSize; + break; + + case LACING_FIXED: + firstFrameSize = dataSize / frameCount; + bytesToSkip = dataSize - firstFrameSize; + break; + + case LACING_EBML: + int vintByte = await ReadByteAsync(ct); + if (vintByte < 0) return null; + + int vintLength = GetVIntLength((byte)vintByte); + + if (vintLength == 1) + { + firstFrameSize = vintByte & 0x7F; + } + else + { + var vintBytes = ArrayPool.Shared.Rent(vintLength); + try + { + vintBytes[0] = (byte)vintByte; + await ReadExactAsync(vintBytes.AsMemory(1, vintLength - 1), ct); + firstFrameSize = (int)ReadVInt(vintBytes.AsSpan(0, vintLength)); + } + finally + { + ArrayPool.Shared.Return(vintBytes); + } + } + + int skipVintBytes = 0; + for (int i = 1; i < frameCount - 1; i++) + { + int b = await ReadByteAsync(ct); + if (b < 0) return null; + int len = GetVIntLength((byte)b); + skipVintBytes++; + if (len > 1) + { + await SkipBytesAsync(len - 1, ct); + skipVintBytes += len - 1; + } + } + + bytesToSkip = dataSize - vintLength - skipVintBytes - firstFrameSize; + break; + + default: + await SkipBytesAsync(dataSize, ct); + return null; + } + + var audioData = new byte[firstFrameSize]; + await ReadExactAsync(audioData, ct); + + if (bytesToSkip > 0) + { + await SkipBytesAsync(bytesToSkip, ct); + } + + long timestampMs = (_currentClusterTimecode + timecodeOffset) * _timecodeScale / 1_000_000; + + return new AudioBlock(audioData, timestampMs, isKeyFrame); + } + + private async ValueTask ParseInfoAsync(long size, CancellationToken ct) + { + long endPosition = _stream.Position + size; + + while (_stream.Position < endPosition) + { + var (id, elementSize) = await ReadElementHeaderAsync(ct); + + switch (id) + { + case TIMECODE_SCALE_ID: + // ReadUnsignedInt! + var scaleData = ArrayPool.Shared.Rent((int)elementSize); + try + { + await ReadExactAsync(scaleData.AsMemory(0, (int)elementSize), ct); + _timecodeScale = ReadUnsignedInt(scaleData.AsSpan(0, (int)elementSize)); + } + finally + { + ArrayPool.Shared.Return(scaleData); + } + break; + + case DURATION_ID: + var durationData = ArrayPool.Shared.Rent((int)elementSize); + try + { + await ReadExactAsync(durationData.AsMemory(0, (int)elementSize), ct); + _duration = (long)ReadFloat(durationData.AsSpan(0, (int)elementSize)); + } + finally + { + ArrayPool.Shared.Return(durationData); + } + break; + + default: + await SkipBytesAsync(elementSize, ct); + break; + } + } + } + + private async ValueTask ParseTracksAsync(long size, CancellationToken ct) + { + long endPosition = _stream.Position + size; + + while (_stream.Position < endPosition) + { + var (id, elementSize) = await ReadElementHeaderAsync(ct); + + if (id == TRACK_ENTRY_ID) + { + await ParseTrackEntryAsync(elementSize, ct); + } + else + { + await SkipBytesAsync(elementSize, ct); + } + } + } + + private async ValueTask ParseTrackEntryAsync(long size, CancellationToken ct) + { + long endPosition = _stream.Position + size; + int trackNumber = 0; + int trackType = 0; + + while (_stream.Position < endPosition) + { + var (id, elementSize) = await ReadElementHeaderAsync(ct); + + switch (id) + { + case TRACK_NUMBER_ID: + // ReadUnsignedInt! + var numData = ArrayPool.Shared.Rent((int)elementSize); + try + { + await ReadExactAsync(numData.AsMemory(0, (int)elementSize), ct); + trackNumber = (int)ReadUnsignedInt(numData.AsSpan(0, (int)elementSize)); + } + finally + { + ArrayPool.Shared.Return(numData); + } + break; + + case TRACK_TYPE_ID: + // ReadUnsignedInt! + var typeData = ArrayPool.Shared.Rent((int)elementSize); + try + { + await ReadExactAsync(typeData.AsMemory(0, (int)elementSize), ct); + trackType = (int)ReadUnsignedInt(typeData.AsSpan(0, (int)elementSize)); + } + finally + { + ArrayPool.Shared.Return(typeData); + } + break; + + case CODEC_PRIVATE_ID: + CodecPrivate = new byte[elementSize]; + await ReadExactAsync(CodecPrivate, ct); + break; + + case AUDIO_ID: + await ParseAudioSettingsAsync(elementSize, ct); + break; + + default: + await SkipBytesAsync(elementSize, ct); + break; + } + } + + if (trackType == 2 && trackNumber > 0) + { + _audioTrackNumber = trackNumber; + } + } + + private async ValueTask ParseAudioSettingsAsync(long size, CancellationToken ct) + { + long endPosition = _stream.Position + size; + + while (_stream.Position < endPosition) + { + var (id, elementSize) = await ReadElementHeaderAsync(ct); + + switch (id) + { + case SAMPLING_FREQUENCY_ID: + var freqData = ArrayPool.Shared.Rent((int)elementSize); + try + { + await ReadExactAsync(freqData.AsMemory(0, (int)elementSize), ct); + SampleRate = (int)ReadFloat(freqData.AsSpan(0, (int)elementSize)); + } + finally + { + ArrayPool.Shared.Return(freqData); + } + break; + + case CHANNELS_ID: + // ReadUnsignedInt! + var chData = ArrayPool.Shared.Rent((int)elementSize); + try + { + await ReadExactAsync(chData.AsMemory(0, (int)elementSize), ct); + Channels = (int)ReadUnsignedInt(chData.AsSpan(0, (int)elementSize)); + } + finally + { + ArrayPool.Shared.Return(chData); + } + break; + + default: + await SkipBytesAsync(elementSize, ct); + break; + } + } + } + + private async ValueTask ParseCuesAsync(long size, CancellationToken ct) + { + long endPosition = _stream.Position + size; + + while (_stream.Position < endPosition) + { + var (id, elementSize) = await ReadElementHeaderAsync(ct); + + if (id == CUE_POINT_ID) + { + var cuePoint = await ParseCuePointAsync(elementSize, ct); + if (cuePoint.HasValue) + { + _cuePoints.Add(cuePoint.Value); + } + } + else + { + await SkipBytesAsync(elementSize, ct); + } + } + } + + private async ValueTask ParseCuePointAsync(long size, CancellationToken ct) + { + long endPosition = _stream.Position + size; + long time = 0; + long clusterPosition = 0; + + while (_stream.Position < endPosition) + { + var (id, elementSize) = await ReadElementHeaderAsync(ct); + + switch (id) + { + case CUE_TIME_ID: + // ReadUnsignedInt! + var timeData = ArrayPool.Shared.Rent((int)elementSize); + try + { + await ReadExactAsync(timeData.AsMemory(0, (int)elementSize), ct); + time = ReadUnsignedInt(timeData.AsSpan(0, (int)elementSize)); + } + finally + { + ArrayPool.Shared.Return(timeData); + } + break; + + case CUE_TRACK_POSITIONS_ID: + long posEnd = _stream.Position + elementSize; + while (_stream.Position < posEnd) + { + var (posId, posSize) = await ReadElementHeaderAsync(ct); + if (posId == CUE_CLUSTER_POSITION_ID) + { + // ReadUnsignedInt! + var posData = ArrayPool.Shared.Rent((int)posSize); + try + { + await ReadExactAsync(posData.AsMemory(0, (int)posSize), ct); + clusterPosition = ReadUnsignedInt(posData.AsSpan(0, (int)posSize)); + } + finally + { + ArrayPool.Shared.Return(posData); + } + } + else + { + await SkipBytesAsync(posSize, ct); + } + } + break; + + default: + await SkipBytesAsync(elementSize, ct); + break; + } + } + + long timeMs = time * _timecodeScale / 1_000_000; + return new CuePoint(timeMs, clusterPosition); + } + + private async ValueTask<(uint Id, long Size)> ReadElementHeaderAsync(CancellationToken ct) + { + int firstByte = await ReadByteAsync(ct); + if (firstByte < 0) return (0, 0); + + // ID — это VINT (с маркерным битом) + int idLength = GetVIntLength((byte)firstByte); + var idBytes = ArrayPool.Shared.Rent(idLength); + uint id; + try + { + idBytes[0] = (byte)firstByte; + if (idLength > 1) + { + await ReadExactAsync(idBytes.AsMemory(1, idLength - 1), ct); + } + // ID читаем КАК ЕСТЬ (включая маркер), это Element ID + id = (uint)ReadUnsignedInt(idBytes.AsSpan(0, idLength)); + } + finally + { + ArrayPool.Shared.Return(idBytes); + } + + firstByte = await ReadByteAsync(ct); + if (firstByte < 0) return (0, 0); + + // Size — это VINT (маркер показывает длину, сам маркер убираем) + int sizeLength = GetVIntLength((byte)firstByte); + var sizeBytes = ArrayPool.Shared.Rent(sizeLength); + long size; + try + { + sizeBytes[0] = (byte)firstByte; + if (sizeLength > 1) + { + await ReadExactAsync(sizeBytes.AsMemory(1, sizeLength - 1), ct); + } + size = ReadVInt(sizeBytes.AsSpan(0, sizeLength)); + } + finally + { + ArrayPool.Shared.Return(sizeBytes); + } + + return (id, size); + } + + #region Read Helpers + + private static int GetVIntLength(byte firstByte) + { + if ((firstByte & 0x80) != 0) return 1; + if ((firstByte & 0x40) != 0) return 2; + if ((firstByte & 0x20) != 0) return 3; + if ((firstByte & 0x10) != 0) return 4; + if ((firstByte & 0x08) != 0) return 5; + if ((firstByte & 0x04) != 0) return 6; + if ((firstByte & 0x02) != 0) return 7; + return 8; + } + + /// + /// Читает unsigned integer (big-endian), без снятия маркерного бита. + /// Используется для data elements (Timecode, TrackNumber и т.д.) + /// + private static long ReadUnsignedInt(ReadOnlySpan data) + { + long value = 0; + foreach (byte b in data) + { + value = (value << 8) | b; + } + return value; + } + + /// + /// Читает VINT Size, снимая маркерный бит. + /// Используется ТОЛЬКО для element size в headers. + /// + private static long ReadVInt(ReadOnlySpan data) + { + if (data.Length == 0) return 0; + + int length = GetVIntLength(data[0]); + byte mask = (byte)(0xFF >> length); + + long value = data[0] & mask; + for (int i = 1; i < data.Length; i++) + { + value = (value << 8) | data[i]; + } + + return value; + } + + private static double ReadFloat(ReadOnlySpan data) + { + return data.Length switch + { + 4 => BinaryPrimitives.ReadSingleBigEndian(data), + 8 => BinaryPrimitives.ReadDoubleBigEndian(data), + _ => 0 + }; + } + + private async ValueTask ReadByteAsync(CancellationToken ct) + { + int read = await _stream.ReadAsync(_readBuffer.AsMemory(0, 1), ct); + return read == 1 ? _readBuffer[0] : -1; + } + + private async ValueTask ReadExactAsync(Memory buffer, CancellationToken ct) + { + int totalRead = 0; + while (totalRead < buffer.Length) + { + int read = await _stream.ReadAsync(buffer[totalRead..], ct); + if (read == 0) + throw new EndOfStreamException(); + totalRead += read; + } + } + + private async ValueTask SkipBytesAsync(long count, CancellationToken ct) + { + if (_stream.CanSeek) + { + _stream.Position += count; + return; + } + + while (count > 0) + { + int toRead = (int)Math.Min(count, _readBuffer.Length); + int read = await _stream.ReadAsync(_readBuffer.AsMemory(0, toRead), ct); + if (read == 0) break; + count -= read; + } + } + + #endregion + + public void Dispose() + { + GC.SuppressFinalize(this); + } +} \ No newline at end of file diff --git a/Core/Audio/Http/SharedHttpClient.cs b/Core/Audio/Http/SharedHttpClient.cs new file mode 100644 index 0000000..11bea98 --- /dev/null +++ b/Core/Audio/Http/SharedHttpClient.cs @@ -0,0 +1,96 @@ +using System.Net; +using System.Net.Http.Headers; + +namespace LMP.Core.Audio.Http; + +/// +/// Shared HttpClient для всей аудио-системы. +/// Singleton с правильной конфигурацией для стриминга. +/// +public static class SharedHttpClient +{ + private static readonly Lazy _instance = new(CreateClient); + + private const int PooledConnectionLifetimeMinutes = 15; + private const int PooledConnectionIdleTimeoutMinutes = 5; + private const int MaxConnectionsPerServer = 10; + private const int TimeoutSeconds = 30; + + private const string UserAgent = + "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36"; + + /// + /// Shared HttpClient instance. + /// + public static HttpClient Instance => _instance.Value; + + private static HttpClient CreateClient() + { + var handler = new SocketsHttpHandler + { + PooledConnectionLifetime = TimeSpan.FromMinutes(PooledConnectionLifetimeMinutes), + PooledConnectionIdleTimeout = TimeSpan.FromMinutes(PooledConnectionIdleTimeoutMinutes), + MaxConnectionsPerServer = MaxConnectionsPerServer, + EnableMultipleHttp2Connections = true, + AutomaticDecompression = DecompressionMethods.All, + + // Отключаем cookies для стриминга + UseCookies = false + }; + + var client = new HttpClient(handler) + { + Timeout = TimeSpan.FromSeconds(TimeoutSeconds) + }; + + client.DefaultRequestHeaders.Add("User-Agent", UserAgent); + client.DefaultRequestHeaders.Add("Accept", "*/*"); + client.DefaultRequestHeaders.Add("Accept-Language", "en-US,en;q=0.9"); + + return client; + } + + /// + /// Создаёт Range request для частичной загрузки. + /// + public static HttpRequestMessage CreateRangeRequest(string url, long start, long end) + { + var request = new HttpRequestMessage(HttpMethod.Get, url); + request.Headers.Range = new RangeHeaderValue(start, end); + return request; + } + + /// + /// Получает Content-Length для URL. + /// + public static async Task GetContentLengthAsync(string url, CancellationToken ct = default) + { + try + { + using var request = new HttpRequestMessage(HttpMethod.Head, url); + using var response = await Instance.SendAsync(request, HttpCompletionOption.ResponseHeadersRead, ct); + return response.Content.Headers.ContentLength ?? -1; + } + catch + { + return -1; + } + } + + /// + /// Получает Content-Type для URL. + /// + public static async Task GetContentTypeAsync(string url, CancellationToken ct = default) + { + try + { + using var request = new HttpRequestMessage(HttpMethod.Head, url); + using var response = await Instance.SendAsync(request, HttpCompletionOption.ResponseHeadersRead, ct); + return response.Content.Headers.ContentType?.MediaType; + } + catch + { + return null; + } + } +} \ No newline at end of file diff --git a/Core/Audio/Interfaces/IAudioCommand.cs b/Core/Audio/Interfaces/IAudioCommand.cs new file mode 100644 index 0000000..518596d --- /dev/null +++ b/Core/Audio/Interfaces/IAudioCommand.cs @@ -0,0 +1,31 @@ +namespace LMP.Core.Audio.Interfaces; + +/// +/// Маркерный интерфейс для всех команд аудио плеера. +/// +public interface IAudioCommand +{ + /// + /// Уникальный ID сессии для отмены устаревших команд. + /// + int SessionId { get; } +} + +public sealed record PlayCommand( + string Url, + string? TrackId, + int BitrateHint, + int SessionId) : IAudioCommand; + +public sealed record StopCommand(int SessionId) : IAudioCommand; + +public sealed record PauseCommand(int SessionId) : IAudioCommand; + +public sealed record ResumeCommand(int SessionId) : IAudioCommand; + +public sealed record SeekCommand( + TimeSpan Position, + int SessionId, + TaskCompletionSource? Completion = null) : IAudioCommand; + +public sealed record DisposeCommand(int SessionId) : IAudioCommand; \ No newline at end of file diff --git a/Core/Audio/Interfaces/IAudioDecoder.cs b/Core/Audio/Interfaces/IAudioDecoder.cs new file mode 100644 index 0000000..f23199d --- /dev/null +++ b/Core/Audio/Interfaces/IAudioDecoder.cs @@ -0,0 +1,35 @@ +namespace LMP.Core.Audio.Interfaces; + +/// +/// Декодер сжатого аудио в PCM. +/// +public interface IAudioDecoder : IDisposable +{ + /// + /// Декодирует сжатый фрейм в PCM float32. + /// + /// Сжатые данные (один фрейм) + /// Выходной буфер (float32, interleaved) + /// Количество семплов на канал + int Decode(ReadOnlySpan encodedData, Span outputBuffer); + + /// + /// Декодирует со сбросом состояния (после seek). + /// + int DecodeWithReset(ReadOnlySpan encodedData, Span outputBuffer); + + /// Частота дискретизации + int SampleRate { get; } + + /// Количество каналов + int Channels { get; } + + /// Максимальный размер выходного буфера в семплах на канал + int MaxFrameSize { get; } + + /// Тип кодека + AudioCodec Codec { get; } + + /// Инициализирован ли декодер + bool IsInitialized { get; } +} \ No newline at end of file diff --git a/Core/Audio/Interfaces/IAudioPlayer.cs b/Core/Audio/Interfaces/IAudioPlayer.cs new file mode 100644 index 0000000..2d45b38 --- /dev/null +++ b/Core/Audio/Interfaces/IAudioPlayer.cs @@ -0,0 +1,57 @@ +namespace LMP.Core.Audio.Interfaces; + +/// +/// Основной интерфейс аудио плеера. +/// Координирует source, decoder и backend для воспроизведения. +/// +/// +/// Thread Safety: Все публичные методы потокобезопасны. +/// +public interface IAudioPlayer : IAsyncDisposable, IDisposable +{ + /// + /// Начинает воспроизведение с указанного URL. + /// + /// URL аудио потока + /// ID трека для обновления URL (опционально) + /// Токен отмены + Task PlayAsync(string url, string? trackId = null, CancellationToken ct = default); + + /// Приостанавливает воспроизведение + void Pause(); + + /// Возобновляет воспроизведение + void Resume(); + + /// Останавливает воспроизведение и освобождает ресурсы трека + void Stop(); + + /// + /// Перемещается к указанной позиции. + /// + ValueTask SeekAsync(TimeSpan position, CancellationToken ct = default); + + /// Громкость (0.0 - 1.0) + float Volume { get; set; } + + /// Текущая позиция воспроизведения + TimeSpan Position { get; } + + /// Общая длительность трека + TimeSpan Duration { get; } + + /// Текущее состояние воспроизведения + PlaybackState State { get; } + + /// Событие изменения позиции (вызывается ~4 раза в секунду) + event Action? PositionChanged; + + /// Событие изменения состояния + event Action? StateChanged; + + /// Событие окончания трека + event Action? TrackEnded; + + /// Событие ошибки + event Action? ErrorOccurred; +} \ No newline at end of file diff --git a/Core/Audio/Interfaces/IAudioSource.cs b/Core/Audio/Interfaces/IAudioSource.cs new file mode 100644 index 0000000..84a1b81 --- /dev/null +++ b/Core/Audio/Interfaces/IAudioSource.cs @@ -0,0 +1,84 @@ +namespace LMP.Core.Audio.Interfaces; + +/// +/// Источник аудио данных (сетевой стрим, файл и т.д.). +/// Предоставляет сжатые аудио-фреймы для декодирования. +/// +public interface IAudioSource : IAsyncDisposable, IDisposable +{ + /// + /// Инициализирует источник и подготавливает к стримингу. + /// + ValueTask InitializeAsync(CancellationToken ct = default); + + /// + /// Читает следующий сжатый аудио-фрейм. + /// + ValueTask ReadFrameAsync(CancellationToken ct = default); + + /// + /// Перемещается к указанной позиции. + /// + ValueTask SeekAsync(long positionMs, CancellationToken ct = default); + + /// Общая длительность в миллисекундах (-1 если неизвестно) + long DurationMs { get; } + + /// Текущая позиция в миллисекундах + long PositionMs { get; } + + /// Поддерживает ли источник seeking + bool CanSeek { get; } + + /// Тип кодека аудио данных + AudioCodec Codec { get; } + + /// Прогресс буферизации (0-100) + double BufferProgress { get; } + + /// Полностью загружен + bool IsFullyBuffered { get; } + + /// + /// Decoder-specific config (ASC для AAC, CodecPrivate для Opus). + /// Null если не требуется или недоступен. + /// + byte[]? DecoderConfig { get; } + + /// Sample rate из контейнера (0 если неизвестен) + int SampleRate { get; } + + /// Количество каналов из контейнера (0 если неизвестно) + int Channels { get; } + + /// Буферизованные диапазоны для визуализации + IReadOnlyList<(double Start, double End)> GetBufferedRanges(); + + /// Освобождает RAM буферы + void ReleaseRamBuffers(); + + /// Отмена текущих операций + void CancelPendingOperations(); +} + +/// +/// Аудио-фрейм с метаданными +/// +public readonly struct AudioFrame +{ + public required ReadOnlyMemory Data { get; init; } + public required long TimestampMs { get; init; } + public required int DurationMs { get; init; } + public bool IsKeyFrame { get; init; } +} + +/// +/// Поддерживаемые аудио кодеки +/// +public enum AudioCodec +{ + Unknown = 0, + Opus = 1, + Aac = 2, + Vorbis = 3 +} \ No newline at end of file diff --git a/Core/Audio/Interfaces/IContainerParser.cs b/Core/Audio/Interfaces/IContainerParser.cs new file mode 100644 index 0000000..98bb003 --- /dev/null +++ b/Core/Audio/Interfaces/IContainerParser.cs @@ -0,0 +1,42 @@ +namespace LMP.Core.Audio.Interfaces; + +/// +/// Парсер контейнерного формата (WebM, MP4 и т.д.). +/// +public interface IContainerParser : IAsyncDisposable, IDisposable +{ + /// Длительность в миллисекундах. + long DurationMs { get; } + + /// Кодек аудио данных. + AudioCodec Codec { get; } + + /// Decoder-specific config (ASC для AAC, CodecPrivate для Opus). + byte[]? DecoderConfig { get; } + + /// Sample rate (0 если неизвестен). + int SampleRate { get; } + + /// Channels (0 если неизвестно). + int Channels { get; } + + /// + /// Парсит заголовки контейнера. + /// + ValueTask ParseHeadersAsync(CancellationToken ct = default); + + /// + /// Читает следующий аудио-фрейм. + /// + ValueTask ReadNextFrameAsync(CancellationToken ct = default); + + /// + /// Находит позицию для seek. + /// + (long BytePosition, long TimestampMs)? FindSeekPosition(long targetMs); + + /// + /// Сбрасывает состояние парсера после seek. + /// + void Reset(); +} \ No newline at end of file diff --git a/Core/Audio/Interfaces/IPlaybackBackend.cs b/Core/Audio/Interfaces/IPlaybackBackend.cs new file mode 100644 index 0000000..c05f1a9 --- /dev/null +++ b/Core/Audio/Interfaces/IPlaybackBackend.cs @@ -0,0 +1,49 @@ +namespace LMP.Core.Audio.Interfaces; + +/// +/// Абстракция над аудио API операционной системы (WaveOut, ALSA, PulseAudio, etc). +/// +public interface IPlaybackBackend : IDisposable +{ + /// + /// Инициализирует аудио устройство. + /// + /// Частота дискретизации. + /// Количество каналов. + /// Callback для запроса PCM данных. + void Initialize(int sampleRate, int channels, AudioDataCallback dataCallback); + + /// Запускает воспроизведение. + void Start(); + + /// Останавливает (приостанавливает) воспроизведение. + void Stop(); + + /// + /// Очищает внутренний буфер. Вызывается при seek для немедленного + /// перехода к новой позиции без проигрывания устаревших данных. + /// + void Flush(); + + /// Громкость (0.0 - 1.0). + float Volume { get; set; } + + /// Воспроизводится ли в данный момент. + bool IsPlaying { get; } + + /// + /// Количество семплов (samples × channels), находящихся во внутреннем буфере, + /// которые были переданы, но ещё не воспроизведены. + /// + int BufferedSamples { get; } + + /// Название бэкенда для диагностики. + string Name { get; } +} + +/// +/// Callback для запроса PCM данных от бэкенда. +/// +/// Буфер для заполнения (float32, interleaved). +/// Количество заполненных фреймов (samples / channels). +public delegate int AudioDataCallback(Span buffer); \ No newline at end of file diff --git a/Core/Audio/Parsers/Mp4ContainerParser.cs b/Core/Audio/Parsers/Mp4ContainerParser.cs new file mode 100644 index 0000000..df7ec70 --- /dev/null +++ b/Core/Audio/Parsers/Mp4ContainerParser.cs @@ -0,0 +1,1644 @@ +using System.Buffers; +using LMP.Core.Audio.Interfaces; + +namespace LMP.Core.Audio.Parsers; + +/// +/// Парсер MP4/M4A контейнера для извлечения AAC фреймов. +/// Поддерживает обычный MP4 и Fragmented MP4 (fMP4). +/// +public sealed class Mp4ContainerParser : IContainerParser +{ + #region Fields + + private readonly Stream _stream; + + private long _durationMs; + private byte[]? _decoderConfig; + private int _sampleRate; + private int _channels; + + // Для обычного MP4 + private List _samples = []; + private int _currentSampleIndex; + + // Для fMP4 + private bool _isFragmented; + private uint _trackTimeScale = 1; + private uint _defaultSampleDuration; + private uint _defaultSampleSize; + private readonly Queue _fragmentSamples = new(); + + // Для seek в fMP4 + private readonly List _segments = []; + + // Для валидации смещений mdat + private long _lastMdatDataStart; + private long _lastMdatDataEnd; + + private bool _disposed; + + #endregion + + #region Properties + + public long DurationMs => _durationMs; + public AudioCodec Codec => AudioCodec.Aac; + public byte[]? DecoderConfig => _decoderConfig; + public int SampleRate => _sampleRate > 0 ? _sampleRate : 44100; + public int Channels => _channels > 0 ? _channels : 2; + + #endregion + + public Mp4ContainerParser(Stream stream) + { + _stream = stream ?? throw new ArgumentNullException(nameof(stream)); + } + + #region Header Parsing + + public async ValueTask ParseHeadersAsync(CancellationToken ct = default) + { + try + { + _stream.Position = 0; + + bool foundMoov = false; + bool foundMoof = false; + bool foundSidx = false; + + while (_stream.Position < _stream.Length) + { + ct.ThrowIfCancellationRequested(); + + if (_stream.Length - _stream.Position < 8) + break; + + long boxStart = _stream.Position; + var (size, type, headerSize) = await ReadBoxHeaderAsync(ct); + + if (size == 0) + size = _stream.Length - boxStart; + + long boxEnd = boxStart + size; + + switch (type) + { + case "moov": + await ParseMoovAsync(boxEnd, ct); + foundMoov = true; + break; + + case "sidx": + await ParseSidxAsync(boxStart, boxEnd, ct); + foundSidx = true; + break; + + case "moof": + _isFragmented = true; + foundMoof = true; + if (_decoderConfig != null) + await ParseMoofAsync(boxStart, boxEnd, headerSize, ct); + else + await SkipToAsync(boxEnd, ct); + break; + + default: + await SkipToAsync(boxEnd, ct); + break; + } + + // Для обычного MP4: хватает moov + if (foundMoov && _samples.Count > 0 && !_isFragmented) + break; + + // Для fMP4: нужен moov + (sidx или moof) + if (foundMoov && _isFragmented && (foundSidx || foundMoof)) + break; + } + + if (_isFragmented && !foundSidx && _durationMs <= 0) + await EstimateDurationFromMoofsAsync(ct); + + if (_isFragmented) + { + Log.Info($"[Mp4Parser] Fragmented MP4: rate={_sampleRate}, channels={_channels}, " + + $"duration={_durationMs}ms, segments={_segments.Count}"); + + // Перемотка к первому moof для начала чтения + _stream.Position = 0; + await ScanToFirstMoofAsync(ct); + return _decoderConfig != null; + } + + if (_samples.Count == 0) + { + Log.Error("[Mp4Parser] No samples found"); + return false; + } + + Log.Debug($"[Mp4Parser] Regular MP4: {_samples.Count} samples, duration={_durationMs}ms"); + return true; + } + catch (Exception ex) + { + Log.Error($"[Mp4Parser] Parse failed: {ex.Message}", ex); + return false; + } + } + + #endregion + + #region Frame Reading + + public async ValueTask ReadNextFrameAsync(CancellationToken ct = default) + { + return _isFragmented + ? await ReadNextFragmentedFrameAsync(ct) + : await ReadNextRegularFrameAsync(ct); + } + + private async ValueTask ReadNextRegularFrameAsync(CancellationToken ct) + { + if (_currentSampleIndex >= _samples.Count) + return null; + + var sample = _samples[_currentSampleIndex++]; + return await ReadSampleAsFrameAsync(sample, ct); + } + + private async ValueTask ReadNextFragmentedFrameAsync(CancellationToken ct) + { + // Если очередь фреймов пуста — нужно распарсить следующий фрагмент + while (_fragmentSamples.Count == 0) + { + if (_stream.Position >= _stream.Length) + return null; + + if (!await ScanAndParseNextFragmentAsync(ct)) + return null; + } + + var sample = _fragmentSamples.Dequeue(); + + // Валидация: offset и size должны быть в пределах файла + if (!ValidateSample(sample)) + { + Log.Warn($"[Mp4Parser] Skipping invalid sample: offset={sample.Offset}, " + + $"size={sample.Size}, streamLen={_stream.Length}"); + // Пропускаем невалидный sample, пробуем следующий + return _fragmentSamples.Count > 0 + ? await ReadNextFragmentedFrameAsync(ct) + : null; + } + + return await ReadSampleAsFrameAsync(sample, ct); + } + + /// + /// Проверяет что sample offset и size находятся в допустимых границах. + /// + private bool ValidateSample(SampleInfo sample) + { + if (sample.Offset < 0 || sample.Size <= 0) + return false; + + if (sample.Offset + sample.Size > _stream.Length) + return false; + + return true; + } + + /// + /// Читает данные sample из stream и возвращает AudioFrame. + /// + private async ValueTask ReadSampleAsFrameAsync(SampleInfo sample, CancellationToken ct) + { + try + { + _stream.Position = sample.Offset; + + var frameData = new byte[sample.Size]; + int totalRead = 0; + + while (totalRead < sample.Size) + { + int read = await _stream.ReadAsync( + frameData.AsMemory(totalRead, sample.Size - totalRead), ct); + + if (read == 0) + { + // Неожиданный конец потока + Log.Warn($"[Mp4Parser] Unexpected EOF at offset {sample.Offset + totalRead}, " + + $"expected {sample.Size} bytes, got {totalRead}"); + return null; + } + + totalRead += read; + } + + return new AudioFrame + { + Data = frameData, + TimestampMs = sample.TimestampMs, + DurationMs = sample.DurationMs, + IsKeyFrame = sample.IsKeyFrame + }; + } + catch (EndOfStreamException) + { + Log.Warn($"[Mp4Parser] EOF reading sample at offset={sample.Offset}, size={sample.Size}"); + return null; + } + catch (IOException ex) + { + Log.Warn($"[Mp4Parser] IO error reading sample: {ex.Message}"); + return null; + } + } + + #endregion + + #region Fragment Scanning + + /// + /// Сканирует поток в поисках следующей пары moof+mdat. + /// + private async Task ScanAndParseNextFragmentAsync(CancellationToken ct) + { + long moofStart = -1; + long moofEnd = -1; + + while (_stream.Position < _stream.Length) + { + ct.ThrowIfCancellationRequested(); + + if (_stream.Length - _stream.Position < 8) + return false; + + long boxStart = _stream.Position; + var (size, type, headerSize) = await ReadBoxHeaderAsync(ct); + + if (size == 0) + size = _stream.Length - boxStart; + + long boxEnd = boxStart + size; + + // Защита от невалидного размера + if (boxEnd > _stream.Length) + { + Log.Warn($"[Mp4Parser] Box '{type}' extends past stream end: " + + $"start={boxStart}, size={size}, streamLen={_stream.Length}"); + return false; + } + + switch (type) + { + case "moof": + moofStart = boxStart; + moofEnd = boxEnd; + await ParseMoofAsync(boxStart, boxEnd, headerSize, ct); + break; + + case "mdat": + _lastMdatDataStart = _stream.Position; // сразу после header mdat + _lastMdatDataEnd = boxEnd; + + if (moofStart >= 0 && _fragmentSamples.Count > 0) + { + ValidateAndCorrectSampleOffsets(moofStart, moofEnd); + // Позиционируемся после mdat для следующего вызова + await SkipToAsync(boxEnd, ct); + return _fragmentSamples.Count > 0; + } + + await SkipToAsync(boxEnd, ct); + break; + + default: + await SkipToAsync(boxEnd, ct); + break; + } + } + + return false; + } + + /// + /// Проверяет и корректирует offsets samples относительно текущего mdat. + /// + private void ValidateAndCorrectSampleOffsets(long moofStart, long moofEnd) + { + if (_fragmentSamples.Count == 0) + return; + + var samples = _fragmentSamples.ToArray(); + _fragmentSamples.Clear(); + + long firstOffset = samples[0].Offset; + + // Case 1: offsets уже корректны (в пределах mdat) + if (firstOffset >= _lastMdatDataStart && firstOffset < _lastMdatDataEnd) + { + foreach (var s in samples) + { + if (s.Offset >= _lastMdatDataStart + && s.Offset + s.Size <= _lastMdatDataEnd) + { + _fragmentSamples.Enqueue(s); + } + else + { + Log.Warn($"[Mp4Parser] Dropping out-of-bounds sample: " + + $"offset={s.Offset}, size={s.Size}, " + + $"mdat=[{_lastMdatDataStart}..{_lastMdatDataEnd})"); + } + } + return; + } + + // Case 2: offsets относительны — корректируем + long correction = _lastMdatDataStart - firstOffset; + + // Дополнительная эвристика: если firstOffset == 0 или маленький, + // скорее всего data_offset от начала moof + if (firstOffset >= moofStart && firstOffset < moofEnd) + { + // data_offset относительно moof — пересчитываем + // (ничего не нужно, correction уже правильный) + } + + foreach (var sample in samples) + { + var corrected = sample with { Offset = sample.Offset + correction }; + + if (corrected.Offset >= _lastMdatDataStart + && corrected.Offset + corrected.Size <= _lastMdatDataEnd) + { + _fragmentSamples.Enqueue(corrected); + } + else + { + Log.Warn($"[Mp4Parser] Dropping corrected sample: " + + $"original={sample.Offset}, corrected={corrected.Offset}, " + + $"size={sample.Size}, mdat=[{_lastMdatDataStart}..{_lastMdatDataEnd})"); + } + } + + if (_fragmentSamples.Count == 0 && samples.Length > 0) + { + Log.Error($"[Mp4Parser] ALL samples dropped after correction! " + + $"firstOffset={firstOffset}, correction={correction}, " + + $"mdat=[{_lastMdatDataStart}..{_lastMdatDataEnd})"); + } + } + + #endregion + + #region Seek + + public (long BytePosition, long TimestampMs)? FindSeekPosition(long targetMs) + { + if (_isFragmented) + return FindSeekPositionFragmented(targetMs); + + if (_samples.Count == 0) + return null; + + int index = BinarySearchSample(targetMs); + var sample = _samples[index]; + _currentSampleIndex = index; + + return (sample.Offset, sample.TimestampMs); + } + + /// + /// Находит позицию для seek в fMP4 по индексу сегментов (sidx). + /// + private (long BytePosition, long TimestampMs)? FindSeekPositionFragmented(long targetMs) + { + if (_segments.Count == 0) + { + Log.Warn("[Mp4Parser] No segment index for fMP4 seek"); + return (0, 0); + } + + long targetTime = targetMs * _trackTimeScale / 1000; + int segmentIndex = BinarySearchSegment(targetTime); + + if (segmentIndex < 0 || segmentIndex >= _segments.Count) + return (0, 0); + + var segment = _segments[segmentIndex]; + long timestampMs = segment.TimeOffset * 1000 / _trackTimeScale; + + Log.Debug($"[Mp4Parser] Seek to segment {segmentIndex}: " + + $"byteOffset={segment.ByteOffset}, timeMs={timestampMs} (target={targetMs}ms)"); + + return (segment.ByteOffset, timestampMs); + } + + public void Reset() + { + _currentSampleIndex = 0; + _fragmentSamples.Clear(); + // Сбрасываем данные о последнем mdat — после seek они невалидны + _lastMdatDataStart = 0; + _lastMdatDataEnd = 0; + } + + #endregion + + #region sidx Parsing + + private async Task ParseSidxAsync(long boxStart, long boxEnd, CancellationToken ct) + { + int version = await ReadByteAsync(ct); + await SkipBytesAsync(3, ct); // flags + + await SkipBytesAsync(4, ct); // reference_ID + uint timescale = await ReadUInt32BEAsync(ct); + + if (timescale == 0) + timescale = _trackTimeScale > 0 ? _trackTimeScale : 44100; + + long firstOffset; + + if (version == 0) + { + await ReadUInt32BEAsync(ct); // earliest_presentation_time + firstOffset = await ReadUInt32BEAsync(ct); + } + else + { + await ReadUInt64BEAsync(ct); // earliest_presentation_time + firstOffset = (long)await ReadUInt64BEAsync(ct); + } + + await SkipBytesAsync(2, ct); // reserved + ushort referenceCount = await ReadUInt16BEAsync(ct); + + _segments.Clear(); + long totalDuration = 0; + // sidx указывает смещения от конца sidx бокса + firstOffset + long currentByteOffset = boxEnd + firstOffset; + + for (int i = 0; i < referenceCount; i++) + { + uint referenceInfo = await ReadUInt32BEAsync(ct); + uint referencedSize = referenceInfo & 0x7FFFFFFF; + + uint subsegmentDuration = await ReadUInt32BEAsync(ct); + await SkipBytesAsync(4, ct); // SAP info + + _segments.Add(new SegmentInfo + { + ByteOffset = currentByteOffset, + TimeOffset = totalDuration, + Duration = subsegmentDuration, + Size = referencedSize + }); + + currentByteOffset += referencedSize; + totalDuration += subsegmentDuration; + } + + long durationMs = totalDuration * 1000 / timescale; + + Log.Debug($"[Mp4Parser] sidx: {referenceCount} segments, timescale={timescale}, duration={durationMs}ms"); + + if (durationMs > _durationMs) + _durationMs = durationMs; + + if (_trackTimeScale == 1) + _trackTimeScale = timescale; + + await SkipToAsync(boxEnd, ct); + } + + #endregion + + #region moof/traf/trun Parsing + + private async Task ParseMoofAsync(long moofStart, long moofEnd, int moofHeaderSize, CancellationToken ct) + { + _fragmentSamples.Clear(); + + while (_stream.Position < moofEnd) + { + long childStart = _stream.Position; + var (size, type, _) = await ReadBoxHeaderAsync(ct); + if (size == 0) break; + + long childEnd = childStart + size; + + if (type == "traf") + await ParseTrafAsync(childEnd, moofStart, moofEnd, ct); + else + await SkipToAsync(childEnd, ct); + } + } + + private async Task ParseTrafAsync(long boxEnd, long moofStart, long moofEnd, CancellationToken ct) + { + uint sampleDuration = _defaultSampleDuration; + uint sampleSize = _defaultSampleSize; + long baseDataOffset = moofStart; + long baseMediaDecodeTime = 0; + + long savedPosition = _stream.Position; + + // First pass: find tfhd + while (_stream.Position < boxEnd) + { + long childStart = _stream.Position; + var (size, type, _) = await ReadBoxHeaderAsync(ct); + if (size == 0) break; + + long childEnd = childStart + size; + + if (type == "tfhd") + { + var tfhd = await ParseTfhdAsync(ct); + + if (tfhd.HasBaseDataOffset) + baseDataOffset = tfhd.BaseDataOffset; + else if (tfhd.DefaultBaseIsMoof) + baseDataOffset = moofStart; + + if (tfhd.HasDefaultSampleDuration) + sampleDuration = tfhd.DefaultSampleDuration; + if (tfhd.HasDefaultSampleSize) + sampleSize = tfhd.DefaultSampleSize; + break; + } + + await SkipToAsync(childEnd, ct); + } + + // Second pass: parse tfdt + trun + _stream.Position = savedPosition; + + while (_stream.Position < boxEnd) + { + long childStart = _stream.Position; + var (size, type, _) = await ReadBoxHeaderAsync(ct); + if (size == 0) break; + + long childEnd = childStart + size; + + switch (type) + { + case "tfdt": + baseMediaDecodeTime = await ParseTfdtAsync(ct); + break; + + case "trun": + await ParseTrunAsync(baseDataOffset, moofEnd, baseMediaDecodeTime, + sampleDuration, sampleSize, ct); + break; + } + + await SkipToAsync(childEnd, ct); + } + } + + private async Task ParseTrunAsync( + long baseDataOffset, + long moofEnd, + long baseMediaDecodeTime, + uint defaultDuration, + uint defaultSize, + CancellationToken ct) + { + uint versionFlags = await ReadUInt32BEAsync(ct); + uint version = versionFlags >> 24; + uint flags = versionFlags & 0xFFFFFF; + + uint sampleCount = await ReadUInt32BEAsync(ct); + var flagsInfo = new TrunFlags(flags); + + int dataOffset = 0; + if (flagsInfo.HasDataOffset) + dataOffset = await ReadInt32BEAsync(ct); + + if (flagsInfo.HasFirstSampleFlags) + await SkipBytesAsync(4, ct); + + long currentOffset = baseDataOffset + dataOffset; + long currentTime = baseMediaDecodeTime; + + for (uint i = 0; i < sampleCount; i++) + { + uint duration = defaultDuration; + uint size = defaultSize; + uint sampleFlags = 0; + int compositionTimeOffset = 0; + + if (flagsInfo.HasSampleDuration) duration = await ReadUInt32BEAsync(ct); + if (flagsInfo.HasSampleSize) size = await ReadUInt32BEAsync(ct); + if (flagsInfo.HasSampleFlags) sampleFlags = await ReadUInt32BEAsync(ct); + + if (flagsInfo.HasSampleCompositionTimeOffset) + { + compositionTimeOffset = version == 0 + ? (int)await ReadUInt32BEAsync(ct) + : await ReadInt32BEAsync(ct); + } + + long timestampMs = _trackTimeScale > 0 + ? (currentTime + compositionTimeOffset) * 1000 / _trackTimeScale + : 0; + + int durationMs = _trackTimeScale > 0 + ? (int)(duration * 1000 / _trackTimeScale) + : 23; + + bool isKeyFrame = (sampleFlags & 0x00010000) == 0; + + _fragmentSamples.Enqueue(new SampleInfo + { + Offset = currentOffset, + Size = (int)size, + TimestampMs = timestampMs, + DurationMs = durationMs, + IsKeyFrame = isKeyFrame + }); + + currentOffset += size; + currentTime += duration; + } + } + + #endregion + + #region moov Parsing + + private async Task ParseMoovAsync(long boxEnd, CancellationToken ct) + { + while (_stream.Position < boxEnd) + { + ct.ThrowIfCancellationRequested(); + + long childStart = _stream.Position; + var (size, type, _) = await ReadBoxHeaderAsync(ct); + if (size == 0) break; + + long childEnd = childStart + size; + + switch (type) + { + case "trak": + await ParseTrakAsync(childEnd, ct); + break; + case "mvhd": + await ParseMvhdAsync(childEnd, ct); + break; + case "mvex": + _isFragmented = true; + await ParseMvexAsync(childEnd, ct); + break; + default: + await SkipToAsync(childEnd, ct); + break; + } + } + } + + private async Task ParseMvhdAsync(long boxEnd, CancellationToken ct) + { + int version = await ReadByteAsync(ct); + await SkipBytesAsync(3, ct); + + uint timescale; + long duration; + + if (version == 1) + { + await SkipBytesAsync(16, ct); + timescale = await ReadUInt32BEAsync(ct); + duration = (long)await ReadUInt64BEAsync(ct); + } + else + { + await SkipBytesAsync(8, ct); + timescale = await ReadUInt32BEAsync(ct); + duration = await ReadUInt32BEAsync(ct); + } + + if (_trackTimeScale == 1) + _trackTimeScale = timescale; + + if (duration > 0 && timescale > 0) + { + _durationMs = duration * 1000 / timescale; + Log.Debug($"[Mp4Parser] mvhd: timescale={timescale}, duration={_durationMs}ms"); + } + + await SkipToAsync(boxEnd, ct); + } + + private async Task ParseMvexAsync(long boxEnd, CancellationToken ct) + { + while (_stream.Position < boxEnd) + { + long childStart = _stream.Position; + var (size, type, _) = await ReadBoxHeaderAsync(ct); + if (size == 0) break; + + long childEnd = childStart + size; + + if (type == "trex") + await ParseTrexAsync(ct); + + await SkipToAsync(childEnd, ct); + } + } + + private async Task ParseTrexAsync(CancellationToken ct) + { + await SkipBytesAsync(4, ct); // version + flags + await SkipBytesAsync(4, ct); // track_ID + await SkipBytesAsync(4, ct); // default_sample_description_index + _defaultSampleDuration = await ReadUInt32BEAsync(ct); + _defaultSampleSize = await ReadUInt32BEAsync(ct); + } + + private async Task ParseTrakAsync(long boxEnd, CancellationToken ct) + { + while (_stream.Position < boxEnd) + { + ct.ThrowIfCancellationRequested(); + + long childStart = _stream.Position; + var (size, type, _) = await ReadBoxHeaderAsync(ct); + if (size == 0) break; + + long childEnd = childStart + size; + + if (type == "mdia") + await ParseMdiaAsync(childEnd, ct); + else + await SkipToAsync(childEnd, ct); + } + } + + private async Task<(bool IsAudio, uint TimeScale)> ParseMdiaAsync(long boxEnd, CancellationToken ct) + { + bool isAudioTrack = false; + uint trackTimeScale = 1; + + while (_stream.Position < boxEnd) + { + long childStart = _stream.Position; + var (size, type, _) = await ReadBoxHeaderAsync(ct); + if (size == 0) break; + + long childEnd = childStart + size; + + switch (type) + { + case "hdlr": + isAudioTrack = await ParseHdlrAsync(ct); + break; + case "mdhd": + trackTimeScale = await ParseMdhdAsync(ct, isAudioTrack); + break; + case "minf" when isAudioTrack: + await ParseMinfAsync(childEnd, trackTimeScale, ct); + break; + } + + await SkipToAsync(childEnd, ct); + } + + return (isAudioTrack, trackTimeScale); + } + + private async Task ParseHdlrAsync(CancellationToken ct) + { + await SkipBytesAsync(8, ct); + var buf = new byte[4]; + await ReadExactlyAsync(buf, ct); + return buf[0] == 's' && buf[1] == 'o' && buf[2] == 'u' && buf[3] == 'n'; + } + + private async Task ParseMdhdAsync(CancellationToken ct, bool isAudioTrack) + { + int version = await ReadByteAsync(ct); + await SkipBytesAsync(3, ct); + + uint trackTimeScale; + + if (version == 1) + { + await SkipBytesAsync(16, ct); + trackTimeScale = await ReadUInt32BEAsync(ct); + } + else + { + await SkipBytesAsync(8, ct); + trackTimeScale = await ReadUInt32BEAsync(ct); + } + + if (isAudioTrack || _trackTimeScale == 1) + _trackTimeScale = trackTimeScale; + + return trackTimeScale; + } + + private async Task ParseMinfAsync(long boxEnd, uint timeScale, CancellationToken ct) + { + while (_stream.Position < boxEnd) + { + long childStart = _stream.Position; + var (size, type, _) = await ReadBoxHeaderAsync(ct); + if (size == 0) break; + + long childEnd = childStart + size; + + if (type == "stbl") + await ParseStblAsync(childEnd, timeScale, ct); + else + await SkipToAsync(childEnd, ct); + } + } + + #endregion + + #region stbl Parsing (Regular MP4) + + private async Task ParseStblAsync(long boxEnd, uint timeScale, CancellationToken ct) + { + List sampleSizes = []; + List<(uint firstChunk, uint samplesPerChunk, uint descriptionIndex)> stsc = []; + List chunkOffsets = []; + List<(uint count, uint delta)> stts = []; + + while (_stream.Position < boxEnd) + { + ct.ThrowIfCancellationRequested(); + + long childStart = _stream.Position; + var (size, type, _) = await ReadBoxHeaderAsync(ct); + if (size == 0) break; + + long childEnd = childStart + size; + + switch (type) + { + case "stsd": await ParseStsdAsync(childEnd, ct); break; + case "stsz": sampleSizes = await ParseStszAsync(ct); break; + case "stsc": stsc = await ParseStscAsync(ct); break; + case "stco": chunkOffsets = await ParseStcoAsync(ct); break; + case "co64": chunkOffsets = await ParseCo64Async(ct); break; + case "stts": stts = await ParseSttsAsync(ct); break; + } + + await SkipToAsync(childEnd, ct); + } + + BuildSampleTable(sampleSizes, stsc, chunkOffsets, stts, timeScale); + } + + private async Task> ParseStszAsync(CancellationToken ct) + { + await SkipBytesAsync(4, ct); + uint defaultSize = await ReadUInt32BEAsync(ct); + uint count = await ReadUInt32BEAsync(ct); + + var sizes = new List((int)count); + for (uint i = 0; i < count; i++) + sizes.Add(defaultSize == 0 ? await ReadUInt32BEAsync(ct) : defaultSize); + return sizes; + } + + private async Task> ParseStscAsync(CancellationToken ct) + { + await SkipBytesAsync(4, ct); + uint entryCount = await ReadUInt32BEAsync(ct); + + var result = new List<(uint, uint, uint)>((int)entryCount); + for (uint i = 0; i < entryCount; i++) + { + uint firstChunk = await ReadUInt32BEAsync(ct); + uint samplesPerChunk = await ReadUInt32BEAsync(ct); + uint descIndex = await ReadUInt32BEAsync(ct); + result.Add((firstChunk, samplesPerChunk, descIndex)); + } + return result; + } + + private async Task> ParseStcoAsync(CancellationToken ct) + { + await SkipBytesAsync(4, ct); + uint count = await ReadUInt32BEAsync(ct); + + var offsets = new List((int)count); + for (uint i = 0; i < count; i++) + offsets.Add(await ReadUInt32BEAsync(ct)); + return offsets; + } + + private async Task> ParseCo64Async(CancellationToken ct) + { + await SkipBytesAsync(4, ct); + uint count = await ReadUInt32BEAsync(ct); + + var offsets = new List((int)count); + for (uint i = 0; i < count; i++) + offsets.Add((long)await ReadUInt64BEAsync(ct)); + return offsets; + } + + private async Task> ParseSttsAsync(CancellationToken ct) + { + await SkipBytesAsync(4, ct); + uint count = await ReadUInt32BEAsync(ct); + + var result = new List<(uint, uint)>((int)count); + for (uint i = 0; i < count; i++) + { + uint sampleCount = await ReadUInt32BEAsync(ct); + uint sampleDelta = await ReadUInt32BEAsync(ct); + result.Add((sampleCount, sampleDelta)); + } + return result; + } + + private async Task ParseStsdAsync(long boxEnd, CancellationToken ct) + { + await SkipBytesAsync(4, ct); + uint entryCount = await ReadUInt32BEAsync(ct); + if (entryCount == 0) return; + + long entryStart = _stream.Position; + var (size, _, _) = await ReadBoxHeaderAsync(ct); + if (size == 0) return; + + long entryEnd = entryStart + size; + + // Skip reserved + data_reference_index + await SkipBytesAsync(6 + 2 + 8, ct); + + _channels = await ReadUInt16BEAsync(ct); + await SkipBytesAsync(2 + 4, ct); // sampleSize + reserved + _sampleRate = (int)(await ReadUInt32BEAsync(ct) >> 16); + + // Parse nested boxes (esds) + while (_stream.Position < entryEnd) + { + long nestedStart = _stream.Position; + var (boxSize, boxType, _) = await ReadBoxHeaderAsync(ct); + if (boxSize == 0) break; + + long nestedEnd = nestedStart + boxSize; + + if (boxType == "esds") + { + await ParseEsdsAsync(ct); + break; + } + + await SkipToAsync(nestedEnd, ct); + } + + await SkipToAsync(entryEnd, ct); + } + + private async Task ParseEsdsAsync(CancellationToken ct) + { + await SkipBytesAsync(4, ct); // version + flags + + var tagBuf = new byte[1]; + + // ES_Descriptor tag (0x03) + await ReadExactlyAsync(tagBuf, ct); + if (tagBuf[0] != 0x03) return; + + await ReadExpandableLengthAsync(ct); + await SkipBytesAsync(2, ct); // ES_ID + + await ReadExactlyAsync(tagBuf, ct); + int flags = tagBuf[0]; + + if ((flags & 0x80) != 0) await SkipBytesAsync(2, ct); + if ((flags & 0x40) != 0) + { + await ReadExactlyAsync(tagBuf, ct); + await SkipBytesAsync(tagBuf[0], ct); + } + if ((flags & 0x20) != 0) await SkipBytesAsync(2, ct); + + // DecoderConfigDescriptor tag (0x04) + await ReadExactlyAsync(tagBuf, ct); + if (tagBuf[0] != 0x04) return; + + await ReadExpandableLengthAsync(ct); + await SkipBytesAsync(13, ct); + + // DecoderSpecificInfo tag (0x05) + await ReadExactlyAsync(tagBuf, ct); + if (tagBuf[0] != 0x05) return; + + int dsiLength = await ReadExpandableLengthAsync(ct); + if (dsiLength <= 0 || dsiLength > 64) return; + + var fullDsi = new byte[dsiLength]; + await ReadExactlyAsync(fullDsi, ct); + + // Trim trailing zeros + int realLength = dsiLength; + while (realLength > 2 && fullDsi[realLength - 1] == 0) + realLength--; + realLength = Math.Max(2, realLength); + + _decoderConfig = realLength < dsiLength ? fullDsi[..realLength] : fullDsi; + + if (realLength < dsiLength) + Log.Debug($"[Mp4Parser] Trimmed ASC: {dsiLength} → {realLength} bytes (removed padding)"); + + ParseAudioSpecificConfig(_decoderConfig); + Log.Debug($"[Mp4Parser] Decoder config ({_decoderConfig.Length} bytes): " + + $"{BitConverter.ToString(_decoderConfig)}"); + } + + private void ParseAudioSpecificConfig(byte[] asc) + { + if (asc.Length < 2) return; + + int audioObjectType = (asc[0] >> 3) & 0x1F; + int samplingFrequencyIndex = ((asc[0] & 0x07) << 1) | ((asc[1] >> 7) & 0x01); + int channelConfig = (asc[1] >> 3) & 0x0F; + + int[] sampleRates = + { + 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, + 16000, 12000, 11025, 8000, 7350, 0, 0, 0 + }; + + int baseSampleRate = samplingFrequencyIndex < sampleRates.Length + ? sampleRates[samplingFrequencyIndex] : 0; + int outputSampleRate = baseSampleRate; + + bool isHeAac = audioObjectType == 5 || audioObjectType == 29; + if (isHeAac && baseSampleRate > 0) + outputSampleRate = baseSampleRate * 2; + + Log.Debug($"[Mp4Parser] ASC parsed: objectType={audioObjectType}, " + + $"freqIndex={samplingFrequencyIndex}, baseRate={baseSampleRate}, " + + $"outputRate={outputSampleRate}, channels={channelConfig}, isHE-AAC={isHeAac}"); + + if (outputSampleRate > 0) _sampleRate = outputSampleRate; + + if (channelConfig > 0 && channelConfig <= 7) + { + int[] channelCounts = { 0, 1, 2, 3, 4, 5, 6, 8 }; + _channels = channelCounts[channelConfig]; + } + } + + private void BuildSampleTable( + List sampleSizes, + List<(uint firstChunk, uint samplesPerChunk, uint descriptionIndex)> stsc, + List chunkOffsets, + List<(uint count, uint delta)> stts, + uint timeScale) + { + if (sampleSizes.Count == 0 || chunkOffsets.Count == 0) return; + + _samples = new List(sampleSizes.Count); + var timestamps = BuildTimestamps(stts); + + int sampleIndex = 0; + int stscIndex = 0; + + for (int chunkIndex = 0; chunkIndex < chunkOffsets.Count && sampleIndex < sampleSizes.Count; chunkIndex++) + { + while (stscIndex + 1 < stsc.Count && stsc[stscIndex + 1].firstChunk - 1 <= chunkIndex) + stscIndex++; + + uint samplesInChunk = stsc.Count > 0 ? stsc[stscIndex].samplesPerChunk : 1; + long offset = chunkOffsets[chunkIndex]; + + for (uint i = 0; i < samplesInChunk && sampleIndex < sampleSizes.Count; i++) + { + long timestampMs = timestamps.Count > sampleIndex + ? timestamps[sampleIndex] * 1000 / timeScale + : sampleIndex * 20; + + int durationMs = sampleIndex + 1 < timestamps.Count + ? (int)((timestamps[sampleIndex + 1] - timestamps[sampleIndex]) * 1000 / timeScale) + : 20; + + _samples.Add(new SampleInfo + { + Offset = offset, + Size = (int)sampleSizes[sampleIndex], + TimestampMs = timestampMs, + DurationMs = durationMs, + IsKeyFrame = true + }); + + offset += sampleSizes[sampleIndex]; + sampleIndex++; + } + } + + if (_samples.Count > 0) + _durationMs = _samples[^1].TimestampMs + _samples[^1].DurationMs; + } + + private static List BuildTimestamps(List<(uint count, uint delta)> stts) + { + int totalSamples = stts.Sum(x => (int)x.count); + var timestamps = new List(totalSamples); + long time = 0; + + foreach (var (count, delta) in stts) + { + for (uint i = 0; i < count; i++) + { + timestamps.Add(time); + time += delta; + } + } + + return timestamps; + } + + #endregion + + #region Duration Estimation (fallback) + + private async Task EstimateDurationFromMoofsAsync(CancellationToken ct) + { + long savedPosition = _stream.Position; + _stream.Position = 0; + + long lastTimestamp = 0; + long lastDuration = 0; + + try + { + while (_stream.Position < _stream.Length) + { + if (_stream.Length - _stream.Position < 8) break; + + long boxStart = _stream.Position; + var (size, type, _) = await ReadBoxHeaderAsync(ct); + if (size == 0) break; + + long boxEnd = boxStart + size; + + if (type == "moof") + { + var (timestamp, duration) = await QuickParseMoofForTimingAsync(boxEnd, ct); + if (timestamp >= 0) + { + _segments.Add(new SegmentInfo + { + ByteOffset = boxStart, + TimeOffset = timestamp, + Duration = duration, + Size = (uint)(boxEnd - boxStart) + }); + + lastTimestamp = timestamp; + lastDuration = duration; + } + } + + await SkipToAsync(boxEnd, ct); + } + + if (lastTimestamp > 0 && _trackTimeScale > 0) + { + long estimatedMs = (lastTimestamp + lastDuration) * 1000 / _trackTimeScale; + if (estimatedMs > _durationMs) + { + _durationMs = estimatedMs; + Log.Debug($"[Mp4Parser] Estimated duration: {_durationMs}ms, " + + $"{_segments.Count} segments"); + } + } + } + finally + { + _stream.Position = savedPosition; + } + } + + private async Task<(long timestamp, long duration)> QuickParseMoofForTimingAsync( + long boxEnd, CancellationToken ct) + { + long timestamp = -1; + long totalDuration = 0; + + while (_stream.Position < boxEnd) + { + long childStart = _stream.Position; + var (size, type, _) = await ReadBoxHeaderAsync(ct); + if (size == 0) break; + + long childEnd = childStart + size; + + if (type == "traf") + { + while (_stream.Position < childEnd) + { + long trafChildStart = _stream.Position; + var (trafChildSize, trafChildType, _) = await ReadBoxHeaderAsync(ct); + if (trafChildSize == 0) break; + + long trafChildEnd = trafChildStart + trafChildSize; + + if (trafChildType == "tfdt") + timestamp = await ParseTfdtAsync(ct); + else if (trafChildType == "trun") + totalDuration = await QuickParseTrunDurationAsync(ct); + + await SkipToAsync(trafChildEnd, ct); + } + } + + await SkipToAsync(childEnd, ct); + } + + return (timestamp, totalDuration); + } + + private async Task QuickParseTrunDurationAsync(CancellationToken ct) + { + uint versionFlags = await ReadUInt32BEAsync(ct); + uint flags = versionFlags & 0xFFFFFF; + + uint sampleCount = await ReadUInt32BEAsync(ct); + + bool hasDataOffset = (flags & 0x000001) != 0; + bool hasFirstSampleFlags = (flags & 0x000004) != 0; + bool hasSampleDuration = (flags & 0x000100) != 0; + bool hasSampleSize = (flags & 0x000200) != 0; + bool hasSampleFlags = (flags & 0x000400) != 0; + bool hasSampleCTO = (flags & 0x000800) != 0; + + if (hasDataOffset) await SkipBytesAsync(4, ct); + if (hasFirstSampleFlags) await SkipBytesAsync(4, ct); + + long totalDuration = 0; + + for (uint i = 0; i < sampleCount; i++) + { + uint duration = _defaultSampleDuration; + if (hasSampleDuration) duration = await ReadUInt32BEAsync(ct); + if (hasSampleSize) await SkipBytesAsync(4, ct); + if (hasSampleFlags) await SkipBytesAsync(4, ct); + if (hasSampleCTO) await SkipBytesAsync(4, ct); + totalDuration += duration; + } + + return totalDuration; + } + + #endregion + + #region Helper Methods + + private async Task ScanToFirstMoofAsync(CancellationToken ct) + { + while (_stream.Position < _stream.Length) + { + if (_stream.Length - _stream.Position < 8) break; + + long boxStart = _stream.Position; + var (size, type, _) = await ReadBoxHeaderAsync(ct); + + if (type == "moof") + { + _stream.Position = boxStart; + return; + } + + if (size == 0) break; + await SkipToAsync(boxStart + size, ct); + } + } + + private readonly record struct TfhdResult( + bool HasBaseDataOffset, long BaseDataOffset, + bool DefaultBaseIsMoof, + bool HasDefaultSampleDuration, uint DefaultSampleDuration, + bool HasDefaultSampleSize, uint DefaultSampleSize); + + private async Task ParseTfhdAsync(CancellationToken ct) + { + uint versionFlags = await ReadUInt32BEAsync(ct); + uint flags = versionFlags & 0xFFFFFF; + + await SkipBytesAsync(4, ct); // track_ID + + long baseDataOffset = 0; + uint defaultSampleDuration = 0; + uint defaultSampleSize = 0; + + bool hasBaseDataOffset = (flags & 0x000001) != 0; + bool hasSampleDescriptionIndex = (flags & 0x000002) != 0; + bool hasDefaultSampleDuration = (flags & 0x000008) != 0; + bool hasDefaultSampleSize = (flags & 0x000010) != 0; + bool hasDefaultSampleFlags = (flags & 0x000020) != 0; + bool defaultBaseIsMoof = (flags & 0x020000) != 0; + + if (hasBaseDataOffset) baseDataOffset = (long)await ReadUInt64BEAsync(ct); + if (hasSampleDescriptionIndex) await SkipBytesAsync(4, ct); + if (hasDefaultSampleDuration) defaultSampleDuration = await ReadUInt32BEAsync(ct); + if (hasDefaultSampleSize) defaultSampleSize = await ReadUInt32BEAsync(ct); + if (hasDefaultSampleFlags) await SkipBytesAsync(4, ct); + + return new TfhdResult( + hasBaseDataOffset, baseDataOffset, + defaultBaseIsMoof, + hasDefaultSampleDuration, defaultSampleDuration, + hasDefaultSampleSize, defaultSampleSize); + } + + private async Task ParseTfdtAsync(CancellationToken ct) + { + int version = await ReadByteAsync(ct); + await SkipBytesAsync(3, ct); + + return version == 1 + ? (long)await ReadUInt64BEAsync(ct) + : await ReadUInt32BEAsync(ct); + } + + private int BinarySearchSegment(long targetTime) + { + int left = 0; + int right = _segments.Count - 1; + int result = 0; + + while (left <= right) + { + int mid = (left + right) / 2; + + if (_segments[mid].TimeOffset <= targetTime) + { + result = mid; + left = mid + 1; + } + else + { + right = mid - 1; + } + } + + return result; + } + + private int BinarySearchSample(long targetMs) + { + int left = 0, right = _samples.Count - 1; + + while (left < right) + { + int mid = (left + right + 1) / 2; + if (_samples[mid].TimestampMs <= targetMs) + left = mid; + else + right = mid - 1; + } + + return left; + } + + private async ValueTask ReadExpandableLengthAsync(CancellationToken ct) + { + int length = 0; + var buf = new byte[1]; + + for (int i = 0; i < 4; i++) + { + await ReadExactlyAsync(buf, ct); + int b = buf[0]; + length = (length << 7) | (b & 0x7F); + if ((b & 0x80) == 0) break; + } + + return length; + } + + #endregion + + #region Binary Reading Helpers + + private async ValueTask<(long size, string type, int headerSize)> ReadBoxHeaderAsync( + CancellationToken ct) + { + var header = ArrayPool.Shared.Rent(8); + try + { + int read = await _stream.ReadAsync(header.AsMemory(0, 8), ct); + if (read < 8) + return (0, "", 0); + + uint size = ReadUInt32BE(header); + string type = System.Text.Encoding.ASCII.GetString(header, 4, 4); + + if (size == 1) + { + var extSize = ArrayPool.Shared.Rent(8); + try + { + await ReadExactlyAsync(extSize.AsMemory(0, 8), ct); + return ((long)ReadUInt64BE(extSize), type, 16); + } + finally + { + ArrayPool.Shared.Return(extSize); + } + } + + return (size, type, 8); + } + catch (EndOfStreamException) + { + return (0, "", 0); + } + finally + { + ArrayPool.Shared.Return(header); + } + } + + /// + /// Читает ровно buffer.Length байт. Бросает EndOfStreamException если невозможно. + /// + private async ValueTask ReadExactlyAsync(Memory buffer, CancellationToken ct) + { + int totalRead = 0; + while (totalRead < buffer.Length) + { + int read = await _stream.ReadAsync(buffer[totalRead..], ct); + if (read == 0) + throw new EndOfStreamException(); + totalRead += read; + } + } + + private async ValueTask ReadByteAsync(CancellationToken ct) + { + var buffer = ArrayPool.Shared.Rent(1); + try + { + int read = await _stream.ReadAsync(buffer.AsMemory(0, 1), ct); + return read == 0 ? -1 : buffer[0]; + } + finally + { + ArrayPool.Shared.Return(buffer); + } + } + + private static uint ReadUInt32BE(ReadOnlySpan b) => + (uint)((b[0] << 24) | (b[1] << 16) | (b[2] << 8) | b[3]); + + private static ulong ReadUInt64BE(ReadOnlySpan b) => + ((ulong)b[0] << 56) | ((ulong)b[1] << 48) | ((ulong)b[2] << 40) | ((ulong)b[3] << 32) | + ((ulong)b[4] << 24) | ((ulong)b[5] << 16) | ((ulong)b[6] << 8) | b[7]; + + private async ValueTask ReadUInt32BEAsync(CancellationToken ct) + { + var buffer = ArrayPool.Shared.Rent(4); + try + { + await ReadExactlyAsync(buffer.AsMemory(0, 4), ct); + return ReadUInt32BE(buffer); + } + finally + { + ArrayPool.Shared.Return(buffer); + } + } + + private async ValueTask ReadInt32BEAsync(CancellationToken ct) + { + var buffer = ArrayPool.Shared.Rent(4); + try + { + await ReadExactlyAsync(buffer.AsMemory(0, 4), ct); + return unchecked((int)ReadUInt32BE(buffer)); + } + finally + { + ArrayPool.Shared.Return(buffer); + } + } + + private async ValueTask ReadUInt64BEAsync(CancellationToken ct) + { + var buffer = ArrayPool.Shared.Rent(8); + try + { + await ReadExactlyAsync(buffer.AsMemory(0, 8), ct); + return ReadUInt64BE(buffer); + } + finally + { + ArrayPool.Shared.Return(buffer); + } + } + + private async ValueTask ReadUInt16BEAsync(CancellationToken ct) + { + var buffer = ArrayPool.Shared.Rent(2); + try + { + await ReadExactlyAsync(buffer.AsMemory(0, 2), ct); + return (ushort)((buffer[0] << 8) | buffer[1]); + } + finally + { + ArrayPool.Shared.Return(buffer); + } + } + + private async ValueTask SkipBytesAsync(long count, CancellationToken ct) + { + if (_stream.CanSeek) + { + _stream.Position += count; + return; + } + + var buffer = ArrayPool.Shared.Rent(Math.Min((int)count, 8192)); + try + { + while (count > 0) + { + int toRead = (int)Math.Min(count, buffer.Length); + int read = await _stream.ReadAsync(buffer.AsMemory(0, toRead), ct); + if (read == 0) break; + count -= read; + } + } + finally + { + ArrayPool.Shared.Return(buffer); + } + } + + private async ValueTask SkipToAsync(long position, CancellationToken ct) + { + if (_stream.Position < position) + await SkipBytesAsync(position - _stream.Position, ct); + } + + #endregion + + #region Types + + private readonly record struct TrunFlags(uint Flags) + { + public bool HasDataOffset => (Flags & 0x000001) != 0; + public bool HasFirstSampleFlags => (Flags & 0x000004) != 0; + public bool HasSampleDuration => (Flags & 0x000100) != 0; + public bool HasSampleSize => (Flags & 0x000200) != 0; + public bool HasSampleFlags => (Flags & 0x000400) != 0; + public bool HasSampleCompositionTimeOffset => (Flags & 0x000800) != 0; + } + + private record struct SegmentInfo + { + public long ByteOffset; + public long TimeOffset; + public long Duration; + public uint Size; + } + + private record struct SampleInfo + { + public long Offset; + public int Size; + public long TimestampMs; + public int DurationMs; + public bool IsKeyFrame; + } + + #endregion + + #region Dispose + + public void Dispose() + { + if (_disposed) return; + _disposed = true; + } + + public ValueTask DisposeAsync() + { + Dispose(); + return ValueTask.CompletedTask; + } + + #endregion +} \ No newline at end of file diff --git a/Core/Audio/Parsers/WebMContainerParser.cs b/Core/Audio/Parsers/WebMContainerParser.cs new file mode 100644 index 0000000..abf6051 --- /dev/null +++ b/Core/Audio/Parsers/WebMContainerParser.cs @@ -0,0 +1,69 @@ +using LMP.Core.Audio.Interfaces; +using LMP.Core.Audio.Helpers; + +namespace LMP.Core.Audio.Parsers; + +/// +/// Адаптер WebMParser для IContainerParser. +/// +public sealed class WebMContainerParser : IContainerParser +{ + private readonly WebMParser _parser; + private bool _disposed; + + public long DurationMs => _parser.DurationMs; + public AudioCodec Codec => AudioCodec.Opus; + public byte[]? DecoderConfig => _parser.CodecPrivate; + public int SampleRate => _parser.SampleRate > 0 ? _parser.SampleRate : 48000; + public int Channels => _parser.Channels > 0 ? _parser.Channels : 2; + + public WebMContainerParser(Stream stream) + { + _parser = new WebMParser(stream); + } + + public async ValueTask ParseHeadersAsync(CancellationToken ct = default) + { + return await _parser.ParseHeadersAsync(ct); + } + + public async ValueTask ReadNextFrameAsync(CancellationToken ct = default) + { + var block = await _parser.ReadNextBlockAsync(ct); + + if (block == null) + return null; + + return new AudioFrame + { + Data = block.Value.Data, + TimestampMs = block.Value.TimestampMs, + DurationMs = 20, // Typical Opus frame + IsKeyFrame = block.Value.IsKeyFrame + }; + } + + public (long BytePosition, long TimestampMs)? FindSeekPosition(long targetMs) + { + var bytePos = _parser.FindSeekPosition(targetMs); + return bytePos.HasValue ? (bytePos.Value, targetMs) : null; + } + + public void Reset() + { + // WebMParser stateless between clusters + } + + public void Dispose() + { + if (_disposed) return; + _disposed = true; + _parser.Dispose(); + } + + public ValueTask DisposeAsync() + { + Dispose(); + return ValueTask.CompletedTask; + } +} \ No newline at end of file diff --git a/Core/Audio/PlaybackState.cs b/Core/Audio/PlaybackState.cs new file mode 100644 index 0000000..b239163 --- /dev/null +++ b/Core/Audio/PlaybackState.cs @@ -0,0 +1,25 @@ +namespace LMP.Core.Audio; + +/// +/// Состояние воспроизведения аудио +/// +public enum PlaybackState +{ + /// Остановлен, ничего не загружено + Stopped, + + /// Загрузка и инициализация + Loading, + + /// Буферизация данных + Buffering, + + /// Активное воспроизведение + Playing, + + /// Пауза + Paused, + + /// Ошибка воспроизведения + Error +} \ No newline at end of file diff --git a/Core/Audio/PlayerState.cs b/Core/Audio/PlayerState.cs new file mode 100644 index 0000000..7c955b5 --- /dev/null +++ b/Core/Audio/PlayerState.cs @@ -0,0 +1,128 @@ +using LMP.Core.Audio.Interfaces; + +namespace LMP.Core.Audio; + +/// +/// Состояния конечного автомата плеера. +/// Переходы строго определены в AudioPlayerStateMachine. +/// +public enum PlayerState +{ + /// Начальное состояние, ничего не загружено. + Idle, + + /// Загрузка источника и инициализация декодера. + Loading, + + /// Буферизация перед стартом воспроизведения. + Buffering, + + /// Активное воспроизведение. + Playing, + + /// Пауза. + Paused, + + /// Выполняется seek операция. + Seeking, + + /// Критическая ошибка, требуется Stop. + Error, + + /// Плеер уничтожен. + Disposed +} + +/// +/// Допустимые переходы состояний. +/// +public static class PlayerStateTransitions +{ + public static bool CanTransition(PlayerState from, PlayerState to) + { + return (from, to) switch + { + // Из Idle + (PlayerState.Idle, PlayerState.Loading) => true, + (PlayerState.Idle, PlayerState.Disposed) => true, + + // Из Loading + (PlayerState.Loading, PlayerState.Buffering) => true, + (PlayerState.Loading, PlayerState.Error) => true, + (PlayerState.Loading, PlayerState.Idle) => true, + (PlayerState.Loading, PlayerState.Loading) => true, // Новый Play отменяет текущий + (PlayerState.Loading, PlayerState.Disposed) => true, + + // Из Buffering + (PlayerState.Buffering, PlayerState.Playing) => true, + (PlayerState.Buffering, PlayerState.Error) => true, + (PlayerState.Buffering, PlayerState.Idle) => true, + (PlayerState.Buffering, PlayerState.Loading) => true, // Новый Play + (PlayerState.Buffering, PlayerState.Disposed) => true, + + // Из Playing + (PlayerState.Playing, PlayerState.Paused) => true, + (PlayerState.Playing, PlayerState.Seeking) => true, + (PlayerState.Playing, PlayerState.Idle) => true, + (PlayerState.Playing, PlayerState.Loading) => true, // Новый Play + (PlayerState.Playing, PlayerState.Error) => true, + (PlayerState.Playing, PlayerState.Disposed) => true, + + // Из Paused + (PlayerState.Paused, PlayerState.Playing) => true, + (PlayerState.Paused, PlayerState.Seeking) => true, + (PlayerState.Paused, PlayerState.Idle) => true, + (PlayerState.Paused, PlayerState.Loading) => true, // Новый Play + (PlayerState.Paused, PlayerState.Disposed) => true, + + // Из Seeking + (PlayerState.Seeking, PlayerState.Playing) => true, + (PlayerState.Seeking, PlayerState.Paused) => true, + (PlayerState.Seeking, PlayerState.Idle) => true, + (PlayerState.Seeking, PlayerState.Loading) => true, // Новый Play + (PlayerState.Seeking, PlayerState.Error) => true, + (PlayerState.Seeking, PlayerState.Disposed) => true, + + // Из Error + (PlayerState.Error, PlayerState.Idle) => true, + (PlayerState.Error, PlayerState.Loading) => true, // Retry/новый Play + (PlayerState.Error, PlayerState.Disposed) => true, + + _ => false + }; + } + + /// + /// Можно ли принять команду в текущем состоянии? + /// + public static bool CanAcceptCommand(PlayerState state, IAudioCommand command) + { + // Disposed — ничего не принимаем кроме Dispose + if (state == PlayerState.Disposed) + return command is DisposeCommand; + + return command switch + { + // Play можно вызвать из ЛЮБОГО состояния (кроме Disposed) + // Новый Play отменит текущую операцию + PlayCommand => true, + + // Stop можно из любого кроме Idle и Disposed + StopCommand => state is not PlayerState.Idle, + + // Pause только из Playing + PauseCommand => state is PlayerState.Playing, + + // Resume только из Paused + ResumeCommand => state is PlayerState.Paused, + + // Seek из Playing или Paused + SeekCommand => state is PlayerState.Playing or PlayerState.Paused, + + // Dispose всегда + DisposeCommand => true, + + _ => false + }; + } +} \ No newline at end of file diff --git a/Core/Audio/Sources/CachingStreamSource.Chunks.cs b/Core/Audio/Sources/CachingStreamSource.Chunks.cs new file mode 100644 index 0000000..adbe050 --- /dev/null +++ b/Core/Audio/Sources/CachingStreamSource.Chunks.cs @@ -0,0 +1,529 @@ +using System.Net; +using System.Net.Http.Headers; +using LMP.Core.Exceptions; +using LMP.Core.Youtube.Utils; +using static LMP.Core.Audio.AudioConstants; + +namespace LMP.Core.Audio.Sources; + +public sealed partial class CachingStreamSource +{ + /// + /// Максимум попыток в при смене эпохи. + /// + private const int ReadAtMaxEpochRetries = 5; + + /// + /// Пауза между retry в при смене эпохи (ms). + /// + private const int ReadAtEpochRetryDelayMs = 50; + + /// + /// Координация URL refresh: только один refresh одновременно. + /// + private readonly SemaphoreSlim _refreshLock = new(1, 1); + + /// + /// Timestamp последнего успешного refresh — для cooldown. + /// + private DateTime _lastRefreshTime = DateTime.MinValue; + + /// + /// Счётчик последовательных 403 после refresh — для circuit breaker. + /// + private int _consecutive403Count; + + /// + /// Минимальный интервал между refresh запросами (ms). + /// + private const int RefreshCooldownMs = 3000; + + /// + /// Максимум последовательных 403 перед остановкой попыток. + /// + private const int Max403BeforeGiveUp = 3; + + /// + /// Задержка перед retry после refresh (ms). + /// + private const int PostRefreshRetryDelayMs = 500; + + // ═══════════════════════════════════════════════════════ + // YOUTUBE STREAMING — Sequential Request Number + // ═══════════════════════════════════════════════════════ + + /// + /// Последовательный номер запроса к YouTube (параметр &rn=). + /// Инкрементируется перед каждым HTTP запросом чанка. + /// + private int _requestSequenceNumber; + + #region ReadAtAsync + + /// + /// Читает данные из указанной позиции, загружая чанки по необходимости. + /// + /// + /// Выбрасывается когда загрузка чанка невозможна (403 circuit breaker, UMP format и т.д.). + /// + internal async Task ReadAtAsync(long position, Memory buffer, CancellationToken ct) + { + // ── Настоящий EOF ── + if (position >= _contentLength) + return 0; + + int chunkIndex = (int)(position / ChunkSize); + int offsetInChunk = (int)(position % ChunkSize); + + // ── Быстрый путь: чанк в RAM ── + if (_ramChunks.TryGetValue(chunkIndex, out var ramData)) + return CopyFromChunk(ramData, offsetInChunk, buffer); + + // ── Средний путь: чанк на диске ── + var diskData = await _cacheManager.ReadChunkAsync(_cacheKey, chunkIndex, ct); + if (diskData != null) + { + _ramChunks.TryAdd(chunkIndex, diskData); + return CopyFromChunk(diskData, offsetInChunk, buffer); + } + + // ── Медленный путь: нужно скачать ── + for (int attempt = 0; attempt < ReadAtMaxEpochRetries; attempt++) + { + ct.ThrowIfCancellationRequested(); + + try + { + var downloadToken = CurrentDownloadToken; + using var linkedCts = CancellationTokenSource + .CreateLinkedTokenSource(ct, downloadToken); + + // EnsureChunkAsync теперь выбрасывает ChunkDownloadFatalException + await EnsureChunkAsync(chunkIndex, linkedCts.Token); + + if (_ramChunks.TryGetValue(chunkIndex, out ramData)) + return CopyFromChunk(ramData, offsetInChunk, buffer); + + diskData = await _cacheManager.ReadChunkAsync(_cacheKey, chunkIndex, ct); + if (diskData != null) + { + _ramChunks.TryAdd(chunkIndex, diskData); + return CopyFromChunk(diskData, offsetInChunk, buffer); + } + } + catch (ChunkDownloadFatalException) + { + // Пробрасываем фатальные ошибки — декодер должен узнать + throw; + } + catch (OperationCanceledException) when (!ct.IsCancellationRequested) + { + Log.Debug($"[CachingSource] ReadAt chunk {chunkIndex}: " + + $"epoch changed, retry {attempt + 1}/{ReadAtMaxEpochRetries}"); + + await Task.Delay(ReadAtEpochRetryDelayMs, ct); + } + } + + ct.ThrowIfCancellationRequested(); + throw new IOException( + $"Failed to load chunk {chunkIndex} after {ReadAtMaxEpochRetries} retries"); + } + + /// + /// Копирует данные из чанка в выходной буфер. + /// + private static int CopyFromChunk(byte[] chunkData, int offset, Memory buffer) + { + int available = Math.Min(buffer.Length, chunkData.Length - offset); + if (available <= 0) return 0; + + chunkData.AsSpan(offset, available).CopyTo(buffer.Span); + return available; + } + + #endregion + + #region EnsureChunkAsync + + /// + /// Гарантирует доступность чанка (загружает если нужно, ждёт если уже качается). + /// + /// + /// Выбрасывается когда circuit breaker открыт или загрузка невозможна. + /// + private async Task EnsureChunkAsync(int index, CancellationToken ct) + { + if (_cacheEntry == null || IsChunkAvailable(index)) + return; + + if (_activeDownloads.TryGetValue(index, out var existingTask)) + { + try { await existingTask.WaitAsync(ct); } + catch (OperationCanceledException) when (!ct.IsCancellationRequested) { } + catch (ChunkDownloadFatalException) { throw; } + + if (IsChunkAvailable(index)) return; + } + + ct.ThrowIfCancellationRequested(); + + // ══════════════════════════════════════════════════════════════ + // CIRCUIT BREAKER CHECK — перед началом любых попыток + // ══════════════════════════════════════════════════════════════ + int currentFailures = Volatile.Read(ref _consecutive403Count); + if (currentFailures >= Max403BeforeGiveUp) + { + Log.Error($"[CachingSource] Chunk {index}: circuit breaker OPEN " + + $"({currentFailures} consecutive 403s), throwing fatal exception"); + + throw new ChunkDownloadFatalException( + $"Stream unavailable: {currentFailures} consecutive HTTP 403 responses", + chunkIndex: index, + consecutiveFailures: currentFailures, + reason: ChunkDownloadFailureReason.Forbidden403, + trackId: _trackId, + httpStatusCode: 403); + } + + // Retry loop для 403 → refresh → retry + for (int attempt = 0; attempt < Max403BeforeGiveUp; attempt++) + { + var downloadTask = DownloadChunkCoreAsync(index, ct); + + if (_activeDownloads.TryAdd(index, downloadTask)) + { + try { await downloadTask; } + catch (ChunkDownloadFatalException) { throw; } + finally { _activeDownloads.TryRemove(index, out _); } + } + else + { + if (_activeDownloads.TryGetValue(index, out var concurrentTask)) + { + try { await concurrentTask.WaitAsync(ct); } + catch (OperationCanceledException) when (!ct.IsCancellationRequested) { } + catch (ChunkDownloadFatalException) { throw; } + } + } + + // Успех — чанк скачан + if (IsChunkAvailable(index)) + return; + + // Чанк не скачан — проверяем circuit breaker + ct.ThrowIfCancellationRequested(); + + currentFailures = Volatile.Read(ref _consecutive403Count); + if (currentFailures >= Max403BeforeGiveUp) + { + Log.Error($"[CachingSource] Chunk {index}: circuit breaker triggered " + + $"after attempt {attempt + 1}"); + + throw new ChunkDownloadFatalException( + $"Stream unavailable: circuit breaker open after {currentFailures} failures", + chunkIndex: index, + consecutiveFailures: currentFailures, + reason: ChunkDownloadFailureReason.Forbidden403, + trackId: _trackId, + httpStatusCode: 403); + } + + await Task.Delay(PostRefreshRetryDelayMs * (attempt + 1), ct); + } + + // Все попытки исчерпаны + throw new ChunkDownloadFatalException( + $"Failed to download chunk {index} after {Max403BeforeGiveUp} attempts", + chunkIndex: index, + consecutiveFailures: Volatile.Read(ref _consecutive403Count), + reason: ChunkDownloadFailureReason.MaxRetriesExceeded, + trackId: _trackId); + } + + #endregion + + #region DownloadChunkCoreAsync + + /// + /// Скачивает один чанк по HTTP Range request. + /// + /// + /// Выбрасывается при UMP формате или превышении лимита 403. + /// + private async Task DownloadChunkCoreAsync(int index, CancellationToken ct) + { + if (_cacheEntry == null || _cacheEntry.IsChunkDownloaded(index)) + return; + + bool gotSlot = false; + + try + { + gotSlot = await _downloadSlots.WaitAsync(DownloadSlotTimeoutMs, ct); + if (!gotSlot) return; + + if (_cacheEntry.IsChunkDownloaded(index)) return; + ct.ThrowIfCancellationRequested(); + + long start = (long)index * ChunkSize; + long end = Math.Min(start + ChunkSize - 1, _contentLength - 1); + + // Последовательный номер запроса для YouTube + int rn = Interlocked.Increment(ref _requestSequenceNumber); + + using var timeoutCts = CancellationTokenSource.CreateLinkedTokenSource(ct); + timeoutCts.CancelAfter(DownloadTimeoutMs); + + using var request = CreateChunkRequest(index, start, end, rn); + + Log.Debug($"[CachingSource] Chunk {index}: GET rn={rn}, range={start}-{end}"); + + using var response = await _httpClient.SendAsync( + request, HttpCompletionOption.ResponseHeadersRead, timeoutCts.Token); + + ct.ThrowIfCancellationRequested(); + + // ═══════════════════════════════════════════════════════════ + // 403 HANDLING — координированный refresh с cooldown + // ═══════════════════════════════════════════════════════════ + if (response.StatusCode == HttpStatusCode.Forbidden) + { + int count = Interlocked.Increment(ref _consecutive403Count); + + if (count > Max403BeforeGiveUp) + { + Log.Error($"[CachingSource] Chunk {index}: {count} consecutive 403s — FATAL"); + + throw new ChunkDownloadFatalException( + $"HTTP 403 Forbidden: exceeded {Max403BeforeGiveUp} consecutive failures", + chunkIndex: index, + consecutiveFailures: count, + reason: ChunkDownloadFailureReason.Forbidden403, + trackId: _trackId, + httpStatusCode: 403); + } + + Log.Warn($"[CachingSource] 403 for chunk {index} (attempt {count}, rn={rn})"); + + // Координированный refresh — только один поток делает запрос + await CoordinatedRefreshAsync(ct); + + // НЕ retry здесь — EnsureChunkAsync попробует снова + return; + } + + // Успешный ответ — сбрасываем счётчик 403 + Interlocked.Exchange(ref _consecutive403Count, 0); + + // ═══════════════════════════════════════════════════════════ + // UMP FORMAT DETECTION — фатальная ошибка + // ═══════════════════════════════════════════════════════════ + if (response.Content.Headers.ContentType?.MediaType?.Contains("yt-ump") == true) + { + Log.Error($"[CachingSource] Chunk {index}: received UMP (encrypted) format — FATAL"); + + throw new ChunkDownloadFatalException( + "YouTube returned encrypted UMP format instead of raw audio. " + + "This stream requires different client configuration.", + chunkIndex: index, + consecutiveFailures: 0, + reason: ChunkDownloadFailureReason.UmpFormat, + trackId: _trackId); + } + + response.EnsureSuccessStatusCode(); + + var data = await response.Content.ReadAsByteArrayAsync(timeoutCts.Token); + + ct.ThrowIfCancellationRequested(); + + if (index == 0) + LogFirstChunkDiagnostics(data); + + _ramChunks.TryAdd(index, data); + + try + { + await _cacheManager.WriteChunkAsync(_cacheKey, index, data, CancellationToken.None); + } + catch (IOException ex) + { + Log.Warn($"[CachingSource] Disk write failed for chunk {index}: {ex.Message}"); + } + + if (_ramChunks.Count > MaxRamChunks) + EvictDistantRamChunks(); + } + catch (ChunkDownloadFatalException) + { + // Пробрасываем фатальные ошибки + throw; + } + catch (OperationCanceledException) + { + // Отмена — не фатальная ошибка + } + catch (HttpRequestException) when (ct.IsCancellationRequested) + { + // Отмена во время HTTP — не фатальная ошибка + } + catch (IOException) when (ct.IsCancellationRequested) + { + // Отмена во время IO — не фатальная ошибка + } + catch (HttpRequestException ex) + { + // Сетевая ошибка — логируем, но не фатальная (retry в EnsureChunkAsync) + if (!ct.IsCancellationRequested) + Log.Warn($"[CachingSource] Chunk {index} network error: {ex.Message}"); + } + catch (Exception ex) + { + if (!ct.IsCancellationRequested) + Log.Warn($"[CachingSource] Chunk {index} download failed: {ex.Message}"); + } + finally + { + if (gotSlot) + { + try { _downloadSlots.Release(); } + catch (ObjectDisposedException) { } + } + } + } + + /// + /// Координированный URL refresh с cooldown и dedup. + /// Только один поток делает реальный refresh — остальные ждут. + /// + private async Task CoordinatedRefreshAsync(CancellationToken ct) + { + var elapsed = DateTime.UtcNow - _lastRefreshTime; + if (elapsed.TotalMilliseconds < RefreshCooldownMs) + { + Log.Debug($"[CachingSource] Refresh cooldown: " + + $"{RefreshCooldownMs - (int)elapsed.TotalMilliseconds}ms remaining"); + + int waitMs = RefreshCooldownMs - (int)elapsed.TotalMilliseconds; + if (waitMs > 0) + await Task.Delay(waitMs, ct); + + return; + } + + bool acquired = await _refreshLock.WaitAsync(0, ct); + if (!acquired) + { + Log.Debug("[CachingSource] Waiting for concurrent refresh..."); + await _refreshLock.WaitAsync(ct); + _refreshLock.Release(); + await Task.Delay(PostRefreshRetryDelayMs, ct); + return; + } + + try + { + elapsed = DateTime.UtcNow - _lastRefreshTime; + if (elapsed.TotalMilliseconds < RefreshCooldownMs) + { + Log.Debug("[CachingSource] Refresh already done by another thread"); + return; + } + + await RefreshUrlAsync(ct); + _lastRefreshTime = DateTime.UtcNow; + await Task.Delay(PostRefreshRetryDelayMs, ct); + } + finally + { + _refreshLock.Release(); + } + } + + /// + /// Создаёт HTTP Range request для чанка. + /// Для YouTube добавляет &rn= (sequential request number). + /// + private HttpRequestMessage CreateChunkRequest(int index, long start, long end, int rn) + { + bool isYouTube = _currentUrl.Contains("googlevideo.com/videoplayback"); + + if (isYouTube) + { + // Используем оптимизированные хелперы из UrlEx + string url = AppendYouTubeParams(_currentUrl, rn); + var request = new HttpRequestMessage(HttpMethod.Get, url); + request.Headers.Range = new RangeHeaderValue(start, end); + return request; + } + + var genericRequest = new HttpRequestMessage(HttpMethod.Get, _currentUrl); + genericRequest.Headers.Range = new RangeHeaderValue(start, end); + return genericRequest; + } + + /// + /// Добавляет YouTube-specific параметры к URL потока. + /// Использует оптимизированные хелперы . + /// + private static string AppendYouTubeParams(string baseUrl, int rn) + { + // Удаляем старые параметры через UrlEx (zero-alloc enumeration) + string url = UrlEx.RemoveQueryParameter(baseUrl, "rn"); + url = UrlEx.RemoveQueryParameter(url, "rbuf"); + + // Добавляем новые параметры + url = UrlEx.SetQueryParameter(url, "rn", rn.ToString()); + url = UrlEx.SetQueryParameter(url, "rbuf", "0"); + + return url; + } + + /// + /// Логирует диагностику первого чанка (формат контейнера). + /// + private static void LogFirstChunkDiagnostics(byte[] data) + { + if (data.Length < 8) return; + + var hex = string.Join(" ", data.Take(16).Select(b => b.ToString("X2"))); + Log.Debug($"[CachingSource] First chunk bytes: {hex}"); + + var ftyp = System.Text.Encoding.ASCII.GetString(data, 4, 4); + if (ftyp == "ftyp") + Log.Debug("[CachingSource] ✅ Valid MP4 container"); + + if (data[0] == 0x1A && data[1] == 0x45 && data[2] == 0xDF && data[3] == 0xA3) + Log.Debug("[CachingSource] ✅ Valid WebM/EBML container"); + } + + #endregion + + #region Chunk Helpers + + /// + /// Проверяет доступность чанка (RAM или диск). + /// + private bool IsChunkAvailable(int index) => + _cacheEntry!.IsChunkDownloaded(index) || _ramChunks.ContainsKey(index); + + /// + /// Вытесняет из RAM чанки, далёкие от текущей позиции. + /// + private void EvictDistantRamChunks() + { + int current = Volatile.Read(ref _currentChunk); + + var toEvict = _ramChunks.Keys + .Where(i => Math.Abs(i - current) > RamEvictionDistance) + .OrderByDescending(i => Math.Abs(i - current)) + .Take(MaxRamChunks / 4) + .ToList(); + + foreach (int idx in toEvict) + _ramChunks.TryRemove(idx, out _); + } + + #endregion +} \ No newline at end of file diff --git a/Core/Audio/Sources/CachingStreamSource.Preload.cs b/Core/Audio/Sources/CachingStreamSource.Preload.cs new file mode 100644 index 0000000..cd0a465 --- /dev/null +++ b/Core/Audio/Sources/CachingStreamSource.Preload.cs @@ -0,0 +1,214 @@ +// Core/Audio/Sources/CachingStreamSource.Preload.cs + +using static LMP.Core.Audio.AudioConstants; + +namespace LMP.Core.Audio.Sources; + +public sealed partial class CachingStreamSource +{ + #region Preload Loop + + /// + /// Фоновый цикл упреждающей загрузки чанков. + /// + /// + /// Стратегия: + /// + /// Приоритет: чанки впереди текущей позиции (preload ahead) + /// После заполнения буфера впереди — докачка остальных (background fill) + /// Все загрузки привязаны к текущей download epoch + /// + /// + /// При seek эпоха сменится → linked CTS отменится → цикл подхватит новую эпоху. + /// + /// + private async Task PreloadLoopAsync(CancellationToken ct) + { + int lastReportedProgress = -1; + int idleCycles = 0; + _backgroundChunksLoaded = 0; + + while (!ct.IsCancellationRequested && _cacheEntry is { IsComplete: false }) + { + try + { + await Task.Delay(PreloadIntervalMs, ct); + + if (_cacheEntry.IsComplete) + break; + + int current = Volatile.Read(ref _currentChunk); + int pending = _activeDownloads.Count; + + if (pending >= MaxConcurrentDownloads) + { + idleCycles = 0; + continue; + } + + // ── Preload ahead ── + bool activePreload = false; + int chunksAhead = 0; + + // Связываем с текущей download epoch + var downloadToken = CurrentDownloadToken; + using var linkedCts = CancellationTokenSource + .CreateLinkedTokenSource(ct, downloadToken); + + for (int i = 0; i <= PreloadAheadChunks && pending < MaxConcurrentDownloads; i++) + { + int idx = current + i; + if (idx >= _cacheEntry.TotalChunks) break; + + if (IsChunkAvailable(idx)) + { + chunksAhead++; + } + else if (!_activeDownloads.ContainsKey(idx)) + { + // Fire-and-forget с epoch token + _ = EnsureChunkAsync(idx, linkedCts.Token); + pending++; + activePreload = true; + await Task.Delay(50, ct); + } + } + + if (!activePreload) + idleCycles++; + else + idleCycles = 0; + + // ── Background fill ── + bool canBackgroundFill = + !activePreload + && idleCycles >= BackgroundFillIdleCycles + && pending < MaxConcurrentDownloads + && chunksAhead >= MinBufferAheadForBackgroundFill + && (MaxBackgroundChunksPerSession == 0 + || _backgroundChunksLoaded < MaxBackgroundChunksPerSession); + + if (canBackgroundFill) + { + int? target = FindNearestMissingChunk(current); + + if (target.HasValue + && !IsChunkAvailable(target.Value) + && !_activeDownloads.ContainsKey(target.Value)) + { + _ = EnsureChunkAsync(target.Value, linkedCts.Token); + _backgroundChunksLoaded++; + await Task.Delay(BackgroundFillIntervalMs, ct); + } + } + + // ── Progress reporting ── + int progress = (int)_cacheEntry.DownloadProgress; + if (progress / 25 > lastReportedProgress / 25) + { + Log.Debug($"[CachingSource] Progress: {progress}% " + + $"({_cacheEntry.DownloadedChunks}/{_cacheEntry.TotalChunks})"); + lastReportedProgress = progress; + } + + // ── RAM eviction ── + if (_ramChunks.Count > MaxRamChunks) + ReleaseRamBuffers(); + } + catch (OperationCanceledException) + { + break; + } + catch + { + // Подавляем все ошибки в фоновом цикле — не валим приложение + } + } + } + + #endregion + + #region Helpers + + /// + /// Находит ближайший незагруженный чанк относительно текущей позиции. + /// Ищет сначала вперёд, потом назад. + /// + private int? FindNearestMissingChunk(int currentChunk) + { + if (_cacheEntry == null) return null; + int total = _cacheEntry.TotalChunks; + + for (int offset = 1; offset < total; offset++) + { + int forward = currentChunk + offset; + if (forward < total && !IsChunkAvailable(forward)) + return forward; + + int backward = currentChunk - offset; + if (backward >= 0 && !IsChunkAvailable(backward)) + return backward; + } + + return null; + } + + /// + public IReadOnlyList<(double Start, double End)> GetBufferedRanges() + { + if (_isOfflineMode) + return [(0.0, 1.0)]; + + if (_cacheEntry == null) + return []; + + int total = _cacheEntry.TotalChunks; + if (total == 0) + return []; + + var ranges = new List<(double, double)>(); + int? rangeStart = null; + + for (int i = 0; i < total; i++) + { + if (IsChunkAvailable(i)) + { + rangeStart ??= i; + } + else if (rangeStart.HasValue) + { + ranges.Add(((double)rangeStart.Value / total, (double)i / total)); + rangeStart = null; + } + } + + if (rangeStart.HasValue) + ranges.Add(((double)rangeStart.Value / total, 1.0)); + + return ranges; + } + + /// + /// Обновляет URL потока (при 403 Forbidden). + /// + private async Task RefreshUrlAsync(CancellationToken ct) + { + if (_urlRefresher == null) return; + + try + { + var newUrl = await _urlRefresher(ct); + if (!string.IsNullOrEmpty(newUrl)) + { + _currentUrl = newUrl; + Log.Info("[CachingSource] URL refreshed"); + } + } + catch (Exception ex) + { + Log.Warn($"[CachingSource] URL refresh failed: {ex.Message}"); + } + } + + #endregion +} \ No newline at end of file diff --git a/Core/Audio/Sources/CachingStreamSource.ReadStream.cs b/Core/Audio/Sources/CachingStreamSource.ReadStream.cs new file mode 100644 index 0000000..8149459 --- /dev/null +++ b/Core/Audio/Sources/CachingStreamSource.ReadStream.cs @@ -0,0 +1,267 @@ +// Core/Audio/Sources/CachingStreamSource.ReadStream.cs + +namespace LMP.Core.Audio.Sources; + +public sealed partial class CachingStreamSource +{ + /// + /// Stream-обёртка для парсеров контейнеров (WebM/MP4). + /// + /// Проблема: + /// Парсеры вызывают (sync) и (async). + /// При seek нужно прервать текущее чтение и начать с новой позиции. + /// Парсеры интерпретируют Read() == 0 как EOF → EndOfStreamException. + /// + /// Решение: + /// + /// + /// setter отменяет внутренний , + /// будя все застрявшие вызовы + /// + /// + /// Sync ловит + /// и возвращает 0 — парсер перечитает с новой позиции (после Reset()) + /// + /// + /// проверяет position до и после чтения — + /// если position изменился (seek), возвращает 0 + /// + /// + /// НИКОГДА не возвращает 0 + /// для промежуточных позиций — ждёт или бросает + /// + /// + /// + private sealed class AsyncCachingReadStream : Stream + { + private readonly CachingStreamSource? _source; + private readonly Stream? _fileStream; + private long _position; + + /// + /// CTS для отмены текущих операций чтения при seek. + /// Пересоздаётся в setter . + /// + private CancellationTokenSource _readCts = new(); + + /// + /// Создаёт стрим для онлайн-режима (чтение через ). + /// + public AsyncCachingReadStream(CachingStreamSource source) + { + _source = source; + } + + /// + /// Создаёт стрим для офлайн-режима (делегирование к файловому стриму). + /// + public AsyncCachingReadStream(CachingStreamSource source, Stream fileStream) + { + _source = source; + _fileStream = fileStream; + } + + #region Stream Properties + + public override bool CanRead => true; + public override bool CanSeek => true; + public override bool CanWrite => false; + public override long Length => _fileStream?.Length ?? _source?._contentLength ?? 0; + + /// + /// Позиция чтения в потоке. + /// + /// + /// Setter (критический для seek): + /// + /// Отменяет — все застрявшие Read/ReadAsync получают OCE + /// Создаёт новый + /// Устанавливает позицию через + /// + /// + /// Это безопасно, потому что: + /// - Sync ловит OCE → возвращает 0 + /// - Async проверяет position после чтения + /// - вызывается после set Position + /// + /// + public override long Position + { + get => _fileStream?.Position ?? Volatile.Read(ref _position); + set + { + if (_fileStream != null) + { + _fileStream.Position = value; + return; + } + + // Отменяем все текущие операции чтения + var oldCts = Interlocked.Exchange(ref _readCts, new CancellationTokenSource()); + + try { oldCts.Cancel(); } + catch (ObjectDisposedException) { } + + try { oldCts.Dispose(); } + catch (ObjectDisposedException) { } + + Volatile.Write(ref _position, value); + } + } + + #endregion + + #region Read (Sync) + + /// + /// Синхронное чтение — вызывается парсерами контейнеров. + /// + /// + /// + /// Использует sync-over-async через .GetAwaiter().GetResult(). + /// При seek (Position setter отменяет ) + /// ловит и возвращает 0. + /// + /// + /// Возврат 0 безопасен здесь, потому что после seek вызывается + /// , и парсер начинает чтение заново. + /// + /// + public override int Read(byte[] buffer, int offset, int count) + { + if (_fileStream != null) + return _fileStream.Read(buffer, offset, count); + + try + { + // Берём snapshot токена — если Position setter создаст новый, + // мы получим отмену старого + var token = Volatile.Read(ref _readCts).Token; + + return ReadAsyncCore(buffer.AsMemory(offset, count), token) + .AsTask() + .ConfigureAwait(false) + .GetAwaiter() + .GetResult(); + } + catch (OperationCanceledException) + { + // Position изменился (seek) — возвращаем 0. + // Парсер перечитает после Reset(). + return 0; + } + catch (AggregateException ex) when (ex.InnerException is OperationCanceledException) + { + return 0; + } + } + + #endregion + + #region ReadAsync + + public override Task ReadAsync(byte[] buffer, int offset, int count, CancellationToken ct) + { + return ReadAsync(buffer.AsMemory(offset, count), ct).AsTask(); + } + + /// + /// Асинхронное чтение с защитой от race condition при seek. + /// + public override async ValueTask ReadAsync( + Memory buffer, CancellationToken ct = default) + { + if (_fileStream != null) + return await _fileStream.ReadAsync(buffer, ct); + + // Связываем внешний ct с внутренним _readCts + var readToken = Volatile.Read(ref _readCts).Token; + using var linkedCts = CancellationTokenSource.CreateLinkedTokenSource(ct, readToken); + + return await ReadAsyncCore(buffer, linkedCts.Token); + } + + /// + /// Ядро чтения — делегирует к + /// с проверкой consistency позиции. + /// + private async ValueTask ReadAsyncCore(Memory buffer, CancellationToken ct) + { + if (_source == null) return 0; + + // Фиксируем позицию ДО чтения + long posBefore = Volatile.Read(ref _position); + + int read = await _source.ReadAtAsync(posBefore, buffer, ct); + + // Проверяем: если position изменился пока мы ждали — данные невалидны. + // Не обновляем позицию — вызывающий код перечитает после Reset(). + long posAfter = Volatile.Read(ref _position); + if (posAfter != posBefore) + return 0; + + // Атомарно обновляем позицию + // CompareExchange гарантирует что мы не перезапишем позицию, + // которую setter уже изменил + Interlocked.CompareExchange(ref _position, posBefore + read, posBefore); + return read; + } + + #endregion + + #region Seek + + public override long Seek(long offset, SeekOrigin origin) + { + if (_fileStream != null) + return _fileStream.Seek(offset, origin); + + long length = _source?._contentLength ?? 0; + long newPos = origin switch + { + SeekOrigin.Begin => offset, + SeekOrigin.Current => Volatile.Read(ref _position) + offset, + SeekOrigin.End => length + offset, + _ => Volatile.Read(ref _position) + }; + + newPos = Math.Clamp(newPos, 0, length); + Volatile.Write(ref _position, newPos); + return newPos; + } + + #endregion + + #region Not Supported + + public override void Flush() { } + public override void SetLength(long value) => throw new NotSupportedException(); + public override void Write(byte[] buffer, int offset, int count) => throw new NotSupportedException(); + + #endregion + + #region Dispose + + protected override void Dispose(bool disposing) + { + if (disposing) + { + _fileStream?.Dispose(); + + var cts = Interlocked.Exchange(ref _readCts, null!); + if (cts != null) + { + try { cts.Cancel(); } + catch (ObjectDisposedException) { } + + try { cts.Dispose(); } + catch (ObjectDisposedException) { } + } + } + + base.Dispose(disposing); + } + + #endregion + } +} \ No newline at end of file diff --git a/Core/Audio/Sources/CachingStreamSource.Seeking.cs b/Core/Audio/Sources/CachingStreamSource.Seeking.cs new file mode 100644 index 0000000..61ba9ea --- /dev/null +++ b/Core/Audio/Sources/CachingStreamSource.Seeking.cs @@ -0,0 +1,106 @@ +// Core/Audio/Sources/CachingStreamSource.Seeking.cs + +namespace LMP.Core.Audio.Sources; + +public sealed partial class CachingStreamSource +{ + /// + /// + /// Алгоритм seek: + /// + /// Находим ближайшую точку seek в контейнере (Cluster/moof boundary) + /// Вызываем — все старые загрузки тихо умирают + /// Очищаем — старые таски больше не отслеживаются + /// Предзагружаем чанки для новой позиции с новым download token + /// Устанавливаем позицию стрима — будит застрявшие Read() в парсере + /// Сбрасываем парсер для чтения с новой позиции + /// + /// + /// После возврата из этого метода декодер может вызывать , + /// которая через получит данные из новой эпохи. + /// + /// + public async ValueTask SeekAsync(long positionMs, CancellationToken ct = default) + { + if (_parser == null) + return false; + + // ── Находим позицию для seek ── + var seekInfo = _parser.FindSeekPosition(positionMs); + if (seekInfo == null) + { + Log.Warn($"[CachingSource] No seek point for {positionMs}ms"); + return false; + } + + long targetBytePos = seekInfo.Value.BytePosition; + long segmentStartMs = seekInfo.Value.TimestampMs; + int targetChunk = (int)(targetBytePos / AudioConstants.ChunkSize); + + Log.Debug($"[CachingSource] Seek: {positionMs}ms → " + + $"byte {targetBytePos}, chunk {targetChunk}/{_cacheEntry?.TotalChunks}"); + + // ── Сбрасываем эпоху загрузок ── + // Все старые DownloadChunkCoreAsync получат OperationCanceledException + // и тихо завершатся в catch (OperationCanceledException) { } + CancellationToken newDownloadToken = ResetDownloadEpoch(); + + // ── Очищаем словарь активных загрузок ── + // Старые таски отменены через epoch CTS — не ждём, просто забываем + foreach (int key in _activeDownloads.Keys.ToList()) + _activeDownloads.TryRemove(key, out _); + + // ── Предзагружаем чанки для новой позиции ── + if (!_isOfflineMode && _cacheEntry != null) + { + try + { + await PreloadChunksForSeekAsync(targetChunk, newDownloadToken); + } + catch (OperationCanceledException) when (!ct.IsCancellationRequested) + { + // Новый seek пришёл пока грузили — предыдущий seek отменён + return false; + } + } + + // ── Устанавливаем позицию стрима ── + // Setter AsyncCachingReadStream.Position: + // 1. Отменяет _readCts → застрявшие Read() получают OCE + // 2. Создаёт новый _readCts + // 3. Volatile.Write(position) + _readStream!.Position = targetBytePos; + _currentChunk = targetChunk; + + // ── Сбрасываем парсер ── + _parser.Reset(); + Volatile.Write(ref _positionMs, segmentStartMs); + + return true; + } + + /// + /// Предзагружает чанки вокруг целевой позиции seek. + /// + /// Чанк, с которого начнётся чтение после seek. + /// Токен новой эпохи загрузки. + private async Task PreloadChunksForSeekAsync(int targetChunk, CancellationToken ct) + { + if (_cacheEntry == null) return; + + var tasks = new List(); + int end = Math.Min(targetChunk + AudioConstants.SeekPreloadChunks, _cacheEntry.TotalChunks); + + for (int i = targetChunk; i < end; i++) + { + if (!IsChunkAvailable(i)) + tasks.Add(EnsureChunkAsync(i, ct)); + } + + if (tasks.Count > 0) + { + Log.Debug($"[CachingSource] Seek preloading {tasks.Count} chunks from {targetChunk}"); + await Task.WhenAll(tasks); + } + } +} \ No newline at end of file diff --git a/Core/Audio/Sources/CachingStreamSource.cs b/Core/Audio/Sources/CachingStreamSource.cs new file mode 100644 index 0000000..bb458e3 --- /dev/null +++ b/Core/Audio/Sources/CachingStreamSource.cs @@ -0,0 +1,512 @@ +using System.Collections.Concurrent; +using LMP.Core.Audio.Cache; +using LMP.Core.Audio.Interfaces; +using LMP.Core.Audio.Parsers; +using static LMP.Core.Audio.AudioConstants; + +namespace LMP.Core.Audio.Sources; + +/// +/// Источник аудио с сегментным кэшированием и HTTP Range-request загрузкой. +/// +/// Архитектура: +/// +/// Данные загружаются чанками фиксированного размера () +/// Чанки кэшируются в RAM () и на диск () +/// Фоновый preload loop обеспечивает опережающую загрузку +/// Seek реализован через epoch-based cancellation — все загрузки старой эпохи тихо умирают +/// +/// +/// Потокобезопасность: +/// +/// Публичные методы потокобезопасны +/// может вызываться конкурентно из decoder loop +/// Seek отменяет текущие загрузки через epoch mechanism, не ломая decoder +/// +/// +/// Partial class structure: +/// +/// CachingStreamSource.cs — ядро: поля, init, read frames, dispose +/// CachingStreamSource.Chunks.cs — загрузка и управление чанками +/// CachingStreamSource.Seeking.cs — seek с epoch-based cancellation +/// CachingStreamSource.Preload.cs — фоновая загрузка и буферизация +/// CachingStreamSource.ReadStream.cs — Stream-обёртка для парсеров +/// +/// +public sealed partial class CachingStreamSource : IAudioSource +{ + #region Fields + + // ── Identity ── + private readonly string _cacheKey; + private readonly string _trackId; + private readonly string _url; + private readonly long _contentLength; + private readonly AudioFormat _format; + private readonly int _bitrate; + + // ── Dependencies ── + private readonly HttpClient _httpClient; + private readonly AudioCacheManager _cacheManager; + private readonly Func>? _urlRefresher; + + // ── Parsing ── + private CacheEntry? _cacheEntry; + private IContainerParser? _parser; + private AsyncCachingReadStream? _readStream; + + // ── Chunk storage ── + private readonly ConcurrentDictionary _ramChunks = new(); + private readonly ConcurrentDictionary _activeDownloads = new(); + private readonly SemaphoreSlim _downloadSlots = new(MaxConcurrentDownloads); + + // ── Epoch-based cancellation ── + // + // При каждом Seek инкрементируется _downloadEpoch и пересоздаётся _downloadCts. + // Все загрузки привязаны к текущей эпохе — при смене эпохи старые тихо умирают. + // Это заменяет проблемный _seekCts, который не был связан с preload loop. + // + private volatile int _downloadEpoch; + private CancellationTokenSource? _downloadCts; + private readonly Lock _epochLock = new(); + + // ── Lifetime ── + private CancellationTokenSource? _lifetimeCts; + private Task? _preloadTask; + + // ── Position tracking ── + private int _currentChunk; + private long _positionMs; + private string _currentUrl; + private int _backgroundChunksLoaded; + + // ── State flags ── + private volatile bool _initialized; + private volatile bool _disposed; + private volatile bool _isOfflineMode; + + #endregion + + #region Properties + + /// + public long DurationMs => _parser?.DurationMs ?? _cacheEntry?.DurationMs ?? -1; + + /// + public long PositionMs => Volatile.Read(ref _positionMs); + + /// + public bool CanSeek => true; + + /// + public AudioCodec Codec { get; private set; } + + /// + public byte[]? DecoderConfig => _parser?.DecoderConfig; + + /// + public int SampleRate => _parser?.SampleRate ?? 0; + + /// + public int Channels => _parser?.Channels ?? 0; + + /// Прогресс буферизации (0–100%). + public double BufferProgress => _isOfflineMode ? 100 : (_cacheEntry?.DownloadProgress ?? 0); + + /// Полностью ли загружен трек. + public bool IsFullyBuffered => _cacheEntry?.IsComplete ?? _isOfflineMode; + + /// Играем ли из полного кэша (без сети). + public bool IsOfflineMode => _isOfflineMode; + + /// Объём скачанных данных в байтах. + public long DownloadedBytes => (_cacheEntry?.DownloadedChunks ?? 0) * (long)ChunkSize; + + /// Битрейт (kbps). + public int Bitrate => _cacheEntry?.Bitrate ?? _bitrate; + + #endregion + + #region Constructor + + /// + /// Создаёт источник с кэширующим HTTP-стримингом. + /// + /// Уникальный ключ кэша (trackId + format + bitrate). + /// ID трека. + /// URL потока (может протухнуть → ). + /// Размер файла в байтах (из Content-Length / clen). + /// Контейнерный формат (WebM, MP4, Ogg). + /// Аудиокодек (Opus, AAC). + /// Битрейт в kbps. + /// HTTP клиент для загрузки. + /// Менеджер дискового кэша. + /// Callback для обновления протухшего URL (403). + public CachingStreamSource( + string cacheKey, + string trackId, + string url, + long contentLength, + AudioFormat format, + AudioCodec codec, + int bitrate, + HttpClient httpClient, + AudioCacheManager cacheManager, + Func>? urlRefresher = null) + { + _cacheKey = cacheKey; + _trackId = trackId; + _url = url; + _currentUrl = url; + _contentLength = contentLength; + _format = format; + _bitrate = bitrate; + _httpClient = httpClient; + _cacheManager = cacheManager; + _urlRefresher = urlRefresher; + Codec = codec; + } + + #endregion + + #region Initialization + + /// + public async ValueTask InitializeAsync(CancellationToken ct = default) + { + if (_initialized) + return true; + + try + { + // Полный кэш — работаем офлайн + if (_cacheManager.IsFullyCached(_cacheKey)) + { + Log.Info($"[CachingSource] Using fully cached: {_cacheKey}"); + _isOfflineMode = true; + return await InitializeFromCacheAsync(ct); + } + + // Создаём/обновляем запись в кэше + _cacheEntry = _cacheManager.CreateOrUpdate( + _cacheKey, _trackId, _url, _contentLength, _format, + AudioSourceFactory.GetCodecForFormat(_format), + _bitrate, + chunkSize: ChunkSize); + + if (_cacheEntry.DownloadedChunks > 0) + { + Log.Info($"[CachingSource] Resuming: " + + $"{_cacheEntry.DownloadedChunks}/{_cacheEntry.TotalChunks} chunks"); + } + + // Создаём lifetime CTS и первую эпоху загрузки + _lifetimeCts = CancellationTokenSource.CreateLinkedTokenSource(ct); + InitializeFirstEpoch(); + + // Загружаем начальные чанки для парсинга заголовков + await LoadInitialChunksAsync(_lifetimeCts.Token); + + // Создаём стрим-обёртку и парсер + _readStream = new AsyncCachingReadStream(this); + _parser = CreateParser(_readStream); + + if (!await _parser.ParseHeadersAsync(ct)) + throw new InvalidOperationException("Failed to parse container headers"); + + // Обновляем метаданные + Codec = _parser.Codec; + _cacheEntry.Codec = Codec; + _cacheEntry.DurationMs = _parser.DurationMs; + _cacheEntry.Bitrate = _bitrate; + + _initialized = true; + + // Запускаем фоновый preload + _preloadTask = Task.Run( + () => PreloadLoopAsync(_lifetimeCts.Token), _lifetimeCts.Token); + + Log.Info($"[CachingSource] Initialized: duration={DurationMs}ms, " + + $"cached={_cacheEntry.DownloadProgress:F0}%"); + + return true; + } + catch (Exception ex) + { + Log.Error($"[CachingSource] Init failed: {ex.Message}", ex); + return false; + } + } + + /// + /// Инициализация из полного дискового кэша (офлайн-режим). + /// + private async Task InitializeFromCacheAsync(CancellationToken ct) + { + var stream = _cacheManager.OpenCachedStream(_cacheKey); + if (stream == null) + { + // Кэш повреждён — переключаемся на онлайн + _isOfflineMode = false; + return await InitializeAsync(ct); + } + + _cacheEntry = _cacheManager.GetCacheInfo(_cacheKey); + _readStream = new AsyncCachingReadStream(this, stream); + _parser = CreateParser(_readStream); + + if (!await _parser.ParseHeadersAsync(ct)) + return false; + + Codec = _parser.Codec; + _initialized = true; + return true; + } + + /// + /// Создаёт парсер контейнера по формату. + /// + private IContainerParser CreateParser(Stream stream) => _format switch + { + AudioFormat.WebM or AudioFormat.Ogg => new WebMContainerParser(stream), + AudioFormat.Mp4 => new Mp4ContainerParser(stream), + _ => throw new NotSupportedException($"Format not supported: {_format}") + }; + + /// + /// Создаёт первую эпоху загрузки, связанную с lifetime CTS. + /// + private void InitializeFirstEpoch() + { + lock (_epochLock) + { + _downloadCts = _lifetimeCts != null + ? CancellationTokenSource.CreateLinkedTokenSource(_lifetimeCts.Token) + : new CancellationTokenSource(); + _downloadEpoch = 1; + } + } + + /// + /// Загружает начальные чанки для парсинга заголовков контейнера. + /// + private async Task LoadInitialChunksAsync(CancellationToken ct) + { + if (_cacheEntry == null) return; + + int count = Math.Min(InitialChunksToLoad, _cacheEntry.TotalChunks); + var tasks = new Task[count]; + + for (int i = 0; i < count; i++) + tasks[i] = EnsureChunkAsync(i, ct); + + await Task.WhenAll(tasks); + } + + #endregion + + #region Reading + + /// + public async ValueTask ReadFrameAsync(CancellationToken ct = default) + { + ObjectDisposedException.ThrowIf(_disposed, this); + + if (!_initialized || _parser == null) + throw new InvalidOperationException("Source not initialized"); + + try + { + var frame = await _parser.ReadNextFrameAsync(ct); + if (frame == null) + return null; + + Volatile.Write(ref _positionMs, frame.Value.TimestampMs); + UpdateCurrentChunk(); + return frame; + } + catch (OperationCanceledException) + { + throw; + } + catch (IOException) when (!_disposed && !_isOfflineMode) + { + // Сетевой сбой — пробуем дозагрузить текущий чанк и повторить + await EnsureChunkAsync(_currentChunk, ct); + return await ReadFrameAsync(ct); + } + } + + /// + /// Обновляет номер текущего чанка по позиции стрима. + /// + private void UpdateCurrentChunk() + { + if (!_isOfflineMode && _readStream != null) + _currentChunk = (int)(_readStream.Position / ChunkSize); + } + + #endregion + + #region Epoch-Based Cancellation + + /// + /// Отменяет все загрузки текущей эпохи и создаёт новую. + /// Вызывается при каждом Seek. + /// + /// CancellationToken новой эпохи для запуска новых загрузок. + /// + /// Механизм работы: + /// + /// Создаём новый CTS, связанный с lifetime + /// Инкрементируем epoch + /// Отменяем и dispose'им старый CTS + /// + /// + /// Порядок важен: новый CTS создаётся ДО отмены старого, + /// чтобы никогда не возвращал отменённый токен. + /// + /// + private CancellationToken ResetDownloadEpoch() + { + lock (_epochLock) + { + var oldCts = _downloadCts; + + // Новый CTS, связанный с lifetime + _downloadCts = _lifetimeCts != null + ? CancellationTokenSource.CreateLinkedTokenSource(_lifetimeCts.Token) + : new CancellationTokenSource(); + + Interlocked.Increment(ref _downloadEpoch); + + // Отменяем и dispose'им старый ПОСЛЕ создания нового + try { oldCts?.Cancel(); } + catch (ObjectDisposedException) { } + + try { oldCts?.Dispose(); } + catch (ObjectDisposedException) { } + + return _downloadCts.Token; + } + } + + /// + /// Возвращает CancellationToken текущей эпохи загрузки. + /// + /// + /// Используется фоновыми загрузками для привязки к текущей эпохе. + /// При смене эпохи (seek) все загрузки с токеном старой эпохи получат отмену. + /// + private CancellationToken CurrentDownloadToken + { + get + { + lock (_epochLock) + { + return _downloadCts?.Token ?? CancellationToken.None; + } + } + } + + #endregion + + #region Public Buffer Management + + /// + public void ReleaseRamBuffers() + { + int current = Volatile.Read(ref _currentChunk); + + foreach (int idx in _ramChunks.Keys + .Where(i => Math.Abs(i - current) > RamEvictionDistance) + .ToList()) + { + _ramChunks.TryRemove(idx, out _); + } + } + + /// + public void CancelPendingOperations() + { + _lifetimeCts?.Cancel(); + } + + #endregion + + #region Dispose + + /// + public void Dispose() + { + if (_disposed) return; + _disposed = true; + + // Отменяем все эпохи + lock (_epochLock) + { + try { _downloadCts?.Cancel(); } + catch (ObjectDisposedException) { } + + try { _downloadCts?.Dispose(); } + catch (ObjectDisposedException) { } + + _downloadCts = null; + } + + // Отменяем lifetime + try { _lifetimeCts?.Cancel(); } + catch (ObjectDisposedException) { } + + try { _lifetimeCts?.Dispose(); } + catch (ObjectDisposedException) { } + + _parser?.Dispose(); + _readStream?.Dispose(); + _ramChunks.Clear(); + _downloadSlots.Dispose(); + } + + /// + public async ValueTask DisposeAsync() + { + if (_disposed) return; + _disposed = true; + + // Отменяем все эпохи + lock (_epochLock) + { + try { _downloadCts?.Cancel(); } + catch (ObjectDisposedException) { } + + try { _downloadCts?.Dispose(); } + catch (ObjectDisposedException) { } + + _downloadCts = null; + } + + // Отменяем lifetime + try { _lifetimeCts?.Cancel(); } + catch (ObjectDisposedException) { } + + // Ждём preload loop + if (_preloadTask != null) + { + try { await _preloadTask.WaitAsync(TimeSpan.FromSeconds(1)); } + catch { /* Timeout or cancelled — OK */ } + } + + try { _lifetimeCts?.Dispose(); } + catch (ObjectDisposedException) { } + + if (_parser != null) + await _parser.DisposeAsync(); + + _refreshLock.Dispose(); + _readStream?.Dispose(); + _ramChunks.Clear(); + _downloadSlots.Dispose(); + } + + #endregion +} \ No newline at end of file diff --git a/Core/Audio/Sources/HlsStreamSource.cs b/Core/Audio/Sources/HlsStreamSource.cs new file mode 100644 index 0000000..454651e --- /dev/null +++ b/Core/Audio/Sources/HlsStreamSource.cs @@ -0,0 +1,613 @@ +using System.ComponentModel; +using System.Net; +using System.Text.RegularExpressions; +using LMP.Core.Audio.Interfaces; +using LMP.Core.Youtube.Exceptions; +using static LMP.Core.Audio.AudioConstants; + +namespace LMP.Core.Audio.Sources; + +/// +/// HLS stream source — устаревший fallback для YouTube. +/// +/// DEPRECATED: YouTube отдаёт прямые WebM/MP4 потоки. +/// HLS использовался как fallback при недоступности прямых URL. +/// Новый код не должен создавать экземпляры этого класса. +/// +/// Для удаления: убрать AudioFormat.Hls из enum, +/// убрать ветку в AudioSourceFactory.CreateAsync, +/// удалить HLS-константы из AudioConstants. +/// +[Obsolete("HLS fallback is deprecated. Use direct WebM/MP4 stream URLs via CachingStreamSource.", error: false)] +[EditorBrowsable(EditorBrowsableState.Never)] +public sealed partial class HlsStreamSource : IAudioSource +{ + private readonly string _masterUrl; + private readonly string? _trackId; + private readonly HttpClient _httpClient; + + private string _currentPlaylistUrl = string.Empty; + private List _segments = []; + private int _currentSegmentIndex; + private readonly Queue _frameBuffer = new(); + private readonly Lock _bufferLock = new(); + private long _positionMs; + private bool _initialized; + private volatile bool _disposed; + + private CancellationTokenSource? _operationCts; + private Task? _prefetchTask; + private readonly HashSet _downloadedSegments = []; + private readonly HashSet _loadingSegments = []; + + public HlsStreamSource(string masterUrl, HttpClient? httpClient = null, string? trackId = null) + { + _masterUrl = masterUrl ?? throw new ArgumentNullException(nameof(masterUrl)); + _httpClient = httpClient ?? Http.SharedHttpClient.Instance; + _trackId = trackId; + } + + public long DurationMs { get; private set; } = -1; + public long PositionMs => Volatile.Read(ref _positionMs); + public bool CanSeek => _segments.Count > 0; + public AudioCodec Codec => AudioCodec.Aac; + public byte[]? DecoderConfig { get; private set; } + public int SampleRate { get; private set; } = DefaultSampleRate; + public int Channels { get; private set; } = DefaultChannels; + + public double BufferProgress + { + get + { + lock (_bufferLock) + { + return _segments.Count > 0 + ? (double)_downloadedSegments.Count / _segments.Count * 100 + : 0; + } + } + } + + public bool IsFullyBuffered + { + get + { + lock (_bufferLock) + { + return _downloadedSegments.Count >= _segments.Count; + } + } + } + + public async ValueTask InitializeAsync(CancellationToken ct = default) + { + if (_initialized) return true; + + try + { + Log.Debug($"[HLS] Initializing: {TruncateUrl(_masterUrl)}"); + + _currentPlaylistUrl = await ResolvePlaylistUrlAsync(ct); + + var mediaContent = await GetStringWithErrorHandlingAsync(_currentPlaylistUrl, ct); + _segments = ParseMediaPlaylist(mediaContent, _currentPlaylistUrl); + + if (_segments.Count == 0) + throw new InvalidOperationException("No segments found in HLS playlist"); + + DurationMs = (long)_segments.Sum(s => s.DurationMs); + + await LoadSegmentAsync(0, ct); + + _initialized = true; + + _operationCts = CancellationTokenSource.CreateLinkedTokenSource(ct); + _prefetchTask = Task.Run(() => PrefetchLoopAsync(_operationCts.Token), ct); + + Log.Info($"[HLS] Initialized: {_segments.Count} segments, duration={DurationMs}ms"); + return true; + } + catch (StreamUnavailableException) + { + throw; + } + catch (HttpRequestException ex) when (ex.StatusCode == HttpStatusCode.Forbidden) + { + Log.Error("[HLS] Init failed: 403 Forbidden"); + throw new StreamUnavailableException( + "HLS manifest returned 403 Forbidden", + _trackId ?? "unknown", + StreamUnavailableReason.Forbidden403, + httpStatusCode: 403, + wasHlsFallback: true); + } + catch (Exception ex) + { + Log.Error($"[HLS] Init failed: {ex.Message}", ex); + throw; + } + } + + private async Task GetStringWithErrorHandlingAsync(string url, CancellationToken ct) + { + try + { + return await _httpClient.GetStringAsync(url, ct); + } + catch (HttpRequestException ex) when (ex.StatusCode == HttpStatusCode.Forbidden) + { + throw new StreamUnavailableException( + "HLS request returned 403 Forbidden", + _trackId ?? "unknown", + StreamUnavailableReason.Forbidden403, + httpStatusCode: 403, + wasHlsFallback: true); + } + } + + private async Task ResolvePlaylistUrlAsync(CancellationToken ct) + { + var masterContent = await GetStringWithErrorHandlingAsync(_masterUrl, ct); + var audioPlaylistUrl = ParseMasterPlaylist(masterContent, _masterUrl); + return string.IsNullOrEmpty(audioPlaylistUrl) ? _masterUrl : audioPlaylistUrl; + } + + public async ValueTask ReadFrameAsync(CancellationToken ct = default) + { + ObjectDisposedException.ThrowIf(_disposed, this); + + if (!_initialized) + throw new InvalidOperationException("Not initialized"); + + while (true) + { + if (TryDequeueFrame(out var frame)) + { + Volatile.Write(ref _positionMs, frame.TimestampMs); + return new AudioFrame + { + Data = frame.Data, + TimestampMs = frame.TimestampMs, + DurationMs = frame.DurationMs, + IsKeyFrame = true + }; + } + + if (_currentSegmentIndex >= _segments.Count) + return null; + + if (!IsSegmentDownloaded(_currentSegmentIndex)) + await LoadSegmentAsync(_currentSegmentIndex, ct); + + if (IsFrameBufferEmpty()) + _currentSegmentIndex++; + } + } + + private bool TryDequeueFrame(out AacFrame frame) + { + lock (_bufferLock) + { + if (_frameBuffer.Count > 0) + { + frame = _frameBuffer.Dequeue(); + return true; + } + frame = default; + return false; + } + } + + private bool IsSegmentDownloaded(int index) + { + lock (_bufferLock) { return _downloadedSegments.Contains(index); } + } + + private bool IsFrameBufferEmpty() + { + lock (_bufferLock) { return _frameBuffer.Count == 0; } + } + + public async ValueTask SeekAsync(long positionMs, CancellationToken ct = default) + { + if (_segments.Count == 0) return false; + + var (targetSegment, segmentStartMs) = FindSegmentByTime(positionMs); + + Log.Debug($"[HLS] Seek to {positionMs}ms → segment {targetSegment}"); + + lock (_bufferLock) { _frameBuffer.Clear(); } + + _currentSegmentIndex = targetSegment; + Volatile.Write(ref _positionMs, segmentStartMs); + + if (!IsSegmentDownloaded(targetSegment)) + await LoadSegmentAsync(targetSegment, ct); + + return true; + } + + private (int Index, long StartMs) FindSegmentByTime(long positionMs) + { + long accumulated = 0; + + for (int i = 0; i < _segments.Count; i++) + { + if (accumulated + _segments[i].DurationMs > positionMs) + return (i, accumulated); + + accumulated += (long)_segments[i].DurationMs; + } + + return (_segments.Count - 1, accumulated); + } + + public IReadOnlyList<(double Start, double End)> GetBufferedRanges() + { + if (_segments.Count == 0 || DurationMs <= 0) return []; + + var ranges = new List<(double, double)>(); + + lock (_bufferLock) + { + int? rangeStart = null; + long startMs = 0; + long currentMs = 0; + + for (int i = 0; i < _segments.Count; i++) + { + bool isDownloaded = _downloadedSegments.Contains(i); + + if (isDownloaded && !rangeStart.HasValue) + { + rangeStart = i; + startMs = currentMs; + } + else if (!isDownloaded && rangeStart.HasValue) + { + ranges.Add(((double)startMs / DurationMs, (double)currentMs / DurationMs)); + rangeStart = null; + } + + currentMs += (long)_segments[i].DurationMs; + } + + if (rangeStart.HasValue) + ranges.Add(((double)startMs / DurationMs, 1.0)); + } + + return ranges; + } + + public void ReleaseRamBuffers() + { + lock (_bufferLock) { _frameBuffer.Clear(); } + } + + public void CancelPendingOperations() => _operationCts?.Cancel(); + + #region Playlist Parsing + + private static string? ParseMasterPlaylist(string content, string baseUrl) + { + var lines = content.Split('\n', StringSplitOptions.RemoveEmptyEntries); + string? audioUrl = null; + int maxBandwidth = 0; + + for (int i = 0; i < lines.Length; i++) + { + var line = lines[i].Trim(); + + if (line.StartsWith("#EXT-X-MEDIA:") && line.Contains("TYPE=AUDIO")) + { + var uriMatch = UriRegex().Match(line); + if (uriMatch.Success) + return ResolveUrl(baseUrl, uriMatch.Groups[1].Value); + } + + if (line.StartsWith("#EXT-X-STREAM-INF:") && i + 1 < lines.Length && !lines[i + 1].StartsWith('#')) + { + var bwMatch = BandwidthRegex().Match(line); + int bw = bwMatch.Success ? int.Parse(bwMatch.Groups[1].Value) : 0; + + var url = lines[i + 1].Trim(); + if (bw > maxBandwidth || audioUrl == null) + { + maxBandwidth = bw; + audioUrl = ResolveUrl(baseUrl, url); + } + } + } + + return audioUrl; + } + + private static List ParseMediaPlaylist(string content, string baseUrl) + { + var segments = new List(); + var lines = content.Split('\n', StringSplitOptions.RemoveEmptyEntries); + + double duration = 0; + long accumulatedMs = 0; + + foreach (var rawLine in lines) + { + var line = rawLine.Trim(); + + if (line.StartsWith("#EXTINF:")) + { + var durationStr = line[8..].Split(',')[0]; + duration = double.Parse(durationStr, System.Globalization.CultureInfo.InvariantCulture); + } + else if (!line.StartsWith('#') && !string.IsNullOrEmpty(line)) + { + var durationMs = duration * 1000; + segments.Add(new HlsSegment(ResolveUrl(baseUrl, line), durationMs, accumulatedMs)); + accumulatedMs += (long)durationMs; + duration = 0; + } + } + + return segments; + } + + private static string ResolveUrl(string baseUrl, string relativeUrl) + { + if (relativeUrl.StartsWith("http://") || relativeUrl.StartsWith("https://")) + return relativeUrl; + + return new Uri(new Uri(baseUrl), relativeUrl).ToString(); + } + + private static string TruncateUrl(string url) => + url.Length <= 60 ? url : string.Concat(url.AsSpan(0, 60), "..."); + + [GeneratedRegex(@"URI=""([^""]+)""")] + private static partial Regex UriRegex(); + + [GeneratedRegex(@"BANDWIDTH=(\d+)")] + private static partial Regex BandwidthRegex(); + + #endregion + + #region Segment Loading + + private async Task LoadSegmentAsync(int index, CancellationToken ct) + { + if (index < 0 || index >= _segments.Count) return; + + lock (_bufferLock) + { + if (_downloadedSegments.Contains(index) || _loadingSegments.Contains(index)) + return; + _loadingSegments.Add(index); + } + + var segment = _segments[index]; + + try + { + var data = await GetBytesWithErrorHandlingAsync(segment.Url, index, ct); + var frames = ExtractAacFramesFromTs(data, segment.StartMs); + + lock (_bufferLock) + { + foreach (var frame in frames) + _frameBuffer.Enqueue(frame); + + _downloadedSegments.Add(index); + _loadingSegments.Remove(index); + } + } + catch (StreamUnavailableException) + { + lock (_bufferLock) { _loadingSegments.Remove(index); } + throw; + } + catch (Exception ex) when (ex is not OperationCanceledException) + { + lock (_bufferLock) { _loadingSegments.Remove(index); } + Log.Warn($"[HLS] Segment {index} failed: {ex.Message}"); + throw; + } + } + + private async Task GetBytesWithErrorHandlingAsync(string url, int segmentIndex, CancellationToken ct) + { + try + { + return await _httpClient.GetByteArrayAsync(url, ct); + } + catch (HttpRequestException ex) when (ex.StatusCode == HttpStatusCode.Forbidden) + { + throw new StreamUnavailableException( + $"HLS segment {segmentIndex} returned 403 Forbidden", + _trackId ?? "unknown", + StreamUnavailableReason.Forbidden403, + httpStatusCode: 403, + wasHlsFallback: true); + } + } + + private List ExtractAacFramesFromTs(byte[] tsData, long baseTimestampMs) + { + var frames = new List(); + int pos = 0; + long currentMs = baseTimestampMs; + + while (pos + 188 <= tsData.Length) + { + if (tsData[pos] != 0x47) { pos++; continue; } + + var payload = ExtractTsPayload(tsData, pos); + if (payload.Length > 0) + ExtractAdtsFrames(payload, ref currentMs, frames); + + pos += 188; + } + + return frames; + } + + private static ReadOnlySpan ExtractTsPayload(byte[] tsData, int packetStart) + { + bool hasPayload = (tsData[packetStart + 3] & 0x10) != 0; + bool hasAdaptation = (tsData[packetStart + 3] & 0x20) != 0; + + if (!hasPayload) return []; + + int payloadStart = packetStart + 4; + if (hasAdaptation) + payloadStart += 1 + tsData[payloadStart]; + + if (payloadStart >= packetStart + 188) return []; + + return tsData.AsSpan(payloadStart, packetStart + 188 - payloadStart); + } + + private void ExtractAdtsFrames(ReadOnlySpan payload, ref long currentMs, List frames) + { + int pos = 0; + + while (pos + 7 <= payload.Length) + { + if (payload[pos] != 0xFF || (payload[pos + 1] & 0xF0) != 0xF0) + { + pos++; + continue; + } + + int frameLength = ((payload[pos + 3] & 0x03) << 11) | + (payload[pos + 4] << 3) | + ((payload[pos + 5] & 0xE0) >> 5); + + if (frameLength <= 0 || pos + frameLength > payload.Length) { pos++; continue; } + + if (DecoderConfig == null) + { + DecoderConfig = ExtractAscFromAdts(payload.Slice(pos, 7)); + ParseAscForSampleInfo(); + } + + int headerLen = (payload[pos + 1] & 0x01) == 0 ? 9 : 7; + int dataLen = frameLength - headerLen; + + if (dataLen > 0 && pos + headerLen + dataLen <= payload.Length) + { + frames.Add(new AacFrame + { + Data = payload.Slice(pos + headerLen, dataLen).ToArray(), + TimestampMs = currentMs, + DurationMs = HlsAacFrameDurationMs + }); + currentMs += HlsAacFrameDurationMs; + } + + pos += frameLength; + } + } + + private static byte[] ExtractAscFromAdts(ReadOnlySpan adtsHeader) + { + int profile = ((adtsHeader[2] & 0xC0) >> 6) + 1; + int sampleRateIndex = (adtsHeader[2] & 0x3C) >> 2; + int channelConfig = ((adtsHeader[2] & 0x01) << 2) | ((adtsHeader[3] & 0xC0) >> 6); + int asc = (profile << 11) | (sampleRateIndex << 7) | (channelConfig << 3); + return [(byte)(asc >> 8), (byte)(asc & 0xFF)]; + } + + private void ParseAscForSampleInfo() + { + if (DecoderConfig == null || DecoderConfig.Length < 2) return; + + int asc = (DecoderConfig[0] << 8) | DecoderConfig[1]; + int sampleRateIndex = (asc >> 7) & 0x0F; + int channelConfig = (asc >> 3) & 0x0F; + + SampleRate = GetAacSampleRate(sampleRateIndex); + Channels = GetAacChannels(channelConfig); + } + + #endregion + + #region Prefetch + + private async Task PrefetchLoopAsync(CancellationToken ct) + { + while (!ct.IsCancellationRequested) + { + try + { + await Task.Delay(HlsPrefetchIntervalMs, ct); + await PrefetchSegmentsAhead(ct); + } + catch (OperationCanceledException) { break; } + catch (StreamUnavailableException ex) + { + Log.Warn($"[HLS] Prefetch stopped: {ex.Message}"); + break; + } + catch (Exception ex) + { + Log.Warn($"[HLS] Prefetch error: {ex.Message}"); + } + } + } + + private async Task PrefetchSegmentsAhead(CancellationToken ct) + { + int current = _currentSegmentIndex; + + for (int i = 0; i < HlsPrefetchSegments && current + i < _segments.Count; i++) + { + int target = current + i; + bool shouldLoad; + + lock (_bufferLock) + { + shouldLoad = !_downloadedSegments.Contains(target) && + !_loadingSegments.Contains(target); + } + + if (shouldLoad) + await LoadSegmentAsync(target, ct); + } + } + + #endregion + + #region Dispose + + public void Dispose() + { + if (_disposed) return; + _disposed = true; + + _operationCts?.Cancel(); + _operationCts?.Dispose(); + + lock (_bufferLock) { _frameBuffer.Clear(); } + } + + public async ValueTask DisposeAsync() + { + if (_disposed) return; + _disposed = true; + + _operationCts?.Cancel(); + + if (_prefetchTask != null) + { + try { await _prefetchTask.WaitAsync(TimeSpan.FromSeconds(1)); } + catch { /* Timeout OK */ } + } + + _operationCts?.Dispose(); + lock (_bufferLock) { _frameBuffer.Clear(); } + } + + #endregion + + private sealed record HlsSegment(string Url, double DurationMs, long StartMs); + private readonly record struct AacFrame(byte[] Data, long TimestampMs, int DurationMs); +} \ No newline at end of file diff --git a/Core/Audio/Sources/LocalFileSource.cs b/Core/Audio/Sources/LocalFileSource.cs new file mode 100644 index 0000000..90b6ca2 --- /dev/null +++ b/Core/Audio/Sources/LocalFileSource.cs @@ -0,0 +1,267 @@ +// Core/Audio/Sources/LocalFileSource.cs + +using LMP.Core.Audio.Interfaces; +using LMP.Core.Audio.Parsers; +using static LMP.Core.Audio.AudioConstants; + +namespace LMP.Core.Audio.Sources; + +/// +/// Источник для локальных аудио файлов (полностью закэшированных или скачанных). +/// +/// Характеристики: +/// +/// Всегда fully buffered (BufferProgress = 100%) +/// Seek через точки контейнера (Cluster/moof), без линейной интерполяции +/// Поддерживает WebM/Opus, MP4/AAC, Ogg/Opus +/// +/// +/// Потокобезопасность: +/// ReadFrameAsync и SeekAsync НЕ потокобезопасны между собой. +/// Вызывающий код () гарантирует последовательный доступ: +/// StopDecoding → Seek → StartDecoding. +/// +public sealed class LocalFileSource : IAudioSource +{ + private readonly string _filePath; + private FileStream? _fileStream; + private IContainerParser? _parser; + private long _positionMs; + private bool _initialized; + private bool _disposed; + + /// + /// Создаёт источник из локального файла. + /// + /// Путь к аудио файлу. + /// is null. + /// Файл не найден. + public LocalFileSource(string filePath) + { + _filePath = filePath ?? throw new ArgumentNullException(nameof(filePath)); + + if (!File.Exists(filePath)) + throw new FileNotFoundException("Audio file not found", filePath); + } + + #region Properties + + /// + public long DurationMs { get; private set; } = -1; + + /// + public long PositionMs => Volatile.Read(ref _positionMs); + + /// + public bool CanSeek => true; + + /// + public AudioCodec Codec { get; private set; } = AudioCodec.Unknown; + + /// + /// Всегда 100% — файл полностью доступен. + public double BufferProgress => 100; + + /// + /// Всегда true — файл полностью доступен. + public bool IsFullyBuffered => true; + + /// + public byte[]? DecoderConfig => _parser?.DecoderConfig; + + /// + public int SampleRate => _parser?.SampleRate ?? 0; + + /// + public int Channels => _parser?.Channels ?? 0; + + #endregion + + #region Initialization + + /// + public async ValueTask InitializeAsync(CancellationToken ct = default) + { + if (_initialized) return true; + + try + { + _fileStream = new FileStream( + _filePath, FileMode.Open, FileAccess.Read, FileShare.Read, + bufferSize: CacheFileBufferSize, useAsync: true); + + var format = await DetectFormatAsync(ct); + _parser = CreateParser(format); + + if (!await _parser.ParseHeadersAsync(ct)) + { + Log.Error("[LocalFileSource] Failed to parse container headers"); + return false; + } + + DurationMs = _parser.DurationMs; + Codec = _parser.Codec; + _initialized = true; + + Log.Info($"[LocalFileSource] Initialized: duration={DurationMs}ms, " + + $"codec={Codec}, size={_fileStream.Length / 1024}KB"); + return true; + } + catch (Exception ex) + { + Log.Error($"[LocalFileSource] Init failed: {ex.Message}", ex); + return false; + } + } + + /// + /// Определяет формат контейнера по magic bytes, с fallback на расширение файла. + /// + private async Task DetectFormatAsync(CancellationToken ct) + { + var header = new byte[FormatDetectionHeaderSize]; + int totalRead = 0; + + while (totalRead < FormatDetectionHeaderSize) + { + int read = await _fileStream!.ReadAsync( + header.AsMemory(totalRead, FormatDetectionHeaderSize - totalRead), ct); + if (read == 0) break; + totalRead += read; + } + + _fileStream!.Position = 0; + + var format = AudioSourceFactory.DetectFormatByMagic(header); + + if (format != AudioFormat.Unknown) + return format; + + // Fallback на расширение + return Path.GetExtension(_filePath).ToLowerInvariant() switch + { + ".webm" => AudioFormat.WebM, + ".m4a" or ".mp4" or ".aac" => AudioFormat.Mp4, + ".ogg" or ".opus" => AudioFormat.Ogg, + _ => throw new NotSupportedException( + $"Cannot detect audio format for: {Path.GetFileName(_filePath)}") + }; + } + + /// + /// Создаёт парсер контейнера. + /// + private IContainerParser CreateParser(AudioFormat format) => format switch + { + AudioFormat.WebM or AudioFormat.Ogg => new WebMContainerParser(_fileStream!), + AudioFormat.Mp4 => new Mp4ContainerParser(_fileStream!), + _ => throw new NotSupportedException($"Unsupported format: {format}") + }; + + #endregion + + #region Reading + + /// + /// + /// НЕ потокобезопасен с . + /// Вызывающий код должен остановить decoder loop перед seek. + /// + public async ValueTask ReadFrameAsync(CancellationToken ct = default) + { + ObjectDisposedException.ThrowIf(_disposed, this); + + if (!_initialized || _parser == null) + throw new InvalidOperationException("Source not initialized"); + + var frame = await _parser.ReadNextFrameAsync(ct); + + if (frame == null) + return null; + + Volatile.Write(ref _positionMs, frame.Value.TimestampMs); + return frame; + } + + #endregion + + #region Seeking + + /// + /// + /// НЕ потокобезопасен с . + /// Вызывающий код должен остановить decoder loop перед seek. + /// + /// Использует только точки seek из контейнера (Cluster boundaries для WebM, + /// moof atoms для fMP4). Не использует линейную интерполяцию — она ненадёжна + /// для VBR потоков и попадает в середину фреймов. + /// + public ValueTask SeekAsync(long positionMs, CancellationToken ct = default) + { + if (_parser == null || _fileStream == null) + return ValueTask.FromResult(false); + + var seekInfo = _parser.FindSeekPosition(positionMs); + + if (seekInfo == null) + { + Log.Warn($"[LocalFileSource] No seek point for {positionMs}ms"); + return ValueTask.FromResult(false); + } + + Log.Debug($"[LocalFileSource] Seek: target={positionMs}ms, " + + $"actual={seekInfo.Value.TimestampMs}ms, " + + $"byte={seekInfo.Value.BytePosition}"); + + _fileStream.Position = seekInfo.Value.BytePosition; + _parser.Reset(); + Volatile.Write(ref _positionMs, seekInfo.Value.TimestampMs); + + return ValueTask.FromResult(true); + } + + #endregion + + #region Buffer Info (No-op for local files) + + /// + /// Всегда возвращает полный диапазон [0, 1]. + public IReadOnlyList<(double Start, double End)> GetBufferedRanges() => [(0.0, 1.0)]; + + /// + /// No-op — нет RAM буферов для локальных файлов. + public void ReleaseRamBuffers() { } + + /// + /// No-op — нет фоновых операций для локальных файлов. + public void CancelPendingOperations() { } + + #endregion + + #region Dispose + + /// + public void Dispose() + { + if (_disposed) return; + _disposed = true; + + _parser?.Dispose(); + _fileStream?.Dispose(); + } + + /// + public async ValueTask DisposeAsync() + { + if (_disposed) return; + _disposed = true; + + if (_parser != null) + await _parser.DisposeAsync(); + + if (_fileStream != null) + await _fileStream.DisposeAsync(); + } + + #endregion +} \ No newline at end of file diff --git a/Core/Audio/Tests/QuickAudioTester.cs b/Core/Audio/Tests/QuickAudioTester.cs new file mode 100644 index 0000000..b9f266f --- /dev/null +++ b/Core/Audio/Tests/QuickAudioTester.cs @@ -0,0 +1,585 @@ +using LMP.Core.Audio.Backends; +using LMP.Core.Audio.Cache; +using LMP.Core.Audio.Decoders; +using LMP.Core.Audio.Http; +using LMP.Core.Audio.Interfaces; +using LMP.Core.Audio.Sources; +using LMP.Core.Audio.Helpers; +using LMP.Core.Models; +using LMP.Core.Services; + +namespace LMP.Core.Audio.Tests; + +/// +/// Быстрый тестер аудио системы. +/// +public static class QuickAudioTester +{ + private const int DefaultPlaybackSeconds = 15; + private const int MinBufferMs = 200; + private const int ProgressUpdateIntervalMs = 500; + private const int BufferingTimeoutMs = 30000; + + /// + /// Проиграть YouTube видео по URL или Video ID. + /// + public static async Task PlayAsync( + string youtubeUrlOrId, + YoutubeProvider youtubeProvider, + int seconds = DefaultPlaybackSeconds, + CancellationToken ct = default) + { + PrintHeader("YOUTUBE AUDIO TEST"); + Console.WriteLine($" Input: {youtubeUrlOrId}"); + Console.WriteLine($" Duration: {seconds}s"); + Console.WriteLine(); + + IAudioSource? source = null; + IAudioDecoder? decoder = null; + IPlaybackBackend? backend = null; + AudioCacheManager? testCache = null; + + try + { + var videoId = ExtractVideoId(youtubeUrlOrId); + if (string.IsNullOrEmpty(videoId)) + { + Console.WriteLine($" ❌ Cannot extract Video ID from: {youtubeUrlOrId}"); + return; + } + Console.WriteLine($"[1/5] Video ID: {videoId}"); + + Console.WriteLine("[2/5] Getting track info..."); + + var track = new TrackInfo + { + Id = $"yt_{videoId}", + Title = "Test Track", + Author = "Unknown", + Url = $"https://www.youtube.com/watch?v={videoId}" + }; + + try + { + var fullTrack = await youtubeProvider.GetTrackByUrlAsync(track.Url); + if (fullTrack != null) + { + track = fullTrack; + Console.WriteLine($" ✓ Title: {track.Title}"); + Console.WriteLine($" ✓ Author: {track.Author}"); + Console.WriteLine($" ✓ Duration: {track.Duration.TotalSeconds:F0}s"); + } + } + catch (Exception ex) + { + Console.WriteLine($" ⚠ Could not get track info: {ex.Message}"); + } + + Console.WriteLine("[3/5] Getting stream URL..."); + + var streamInfo = await youtubeProvider.RefreshStreamUrlAsync(track, forceRefresh: true, ct); + + if (streamInfo == null) + { + Console.WriteLine(" ❌ Failed to get stream URL"); + return; + } + + var (url, size, bitrate, codec, container) = streamInfo.Value; + + Console.WriteLine($" ✓ Codec: {codec}"); + Console.WriteLine($" ✓ Bitrate: {bitrate} kbps"); + Console.WriteLine($" ✓ Container: {container}"); + Console.WriteLine($" ✓ Size: {(size > 0 ? $"{size / 1024.0 / 1024.0:F1} MB" : "Unknown")}"); + Console.WriteLine($" ✓ HLS: {track.IsHlsOnly}"); + Console.WriteLine($" ✓ URL: {url[..Math.Min(80, url.Length)]}..."); + + Console.WriteLine("[4/5] Creating audio pipeline..."); + + // Создаём временный кэш для теста + testCache = new AudioCacheManager(); + + (source, decoder) = await CreateSourceAndDecoderAsync( + track, url, size, codec, bitrate, container, testCache, ct); + + if (source == null || decoder == null) + { + Console.WriteLine(" ❌ Failed to create source/decoder"); + return; + } + + Console.WriteLine($" ✓ Source initialized: duration={source.DurationMs}ms, codec={source.Codec}"); + + Console.WriteLine("[5/5] Creating backend..."); + backend = CreateBackend(); + Console.WriteLine($" ✓ {backend.Name} backend"); + + await PlayPipelineAsync(source, decoder, backend, seconds, ct); + } + catch (OperationCanceledException) + { + Console.WriteLine("\n ⏹ Cancelled"); + } + catch (Exception ex) + { + Console.WriteLine($"\n ❌ Error: {ex.Message}"); + Console.WriteLine(ex.StackTrace); + } + finally + { + backend?.Dispose(); + decoder?.Dispose(); + if (source != null) + await source.DisposeAsync(); + if (testCache != null) + await testCache.DisposeAsync(); + } + } + + /// + /// Проиграть локальный файл. + /// + public static async Task PlayFileAsync(string filePath, int seconds = 10) + { + PrintHeader("LOCAL FILE TEST"); + Console.WriteLine($" File: {filePath}"); + Console.WriteLine(); + + if (!File.Exists(filePath)) + { + Console.WriteLine(" ❌ File not found"); + return; + } + + LocalFileSource? source = null; + IAudioDecoder? decoder = null; + IPlaybackBackend? backend = null; + + try + { + source = new LocalFileSource(filePath); + + if (!await source.InitializeAsync()) + { + Console.WriteLine(" ❌ Failed to initialize"); + return; + } + + Console.WriteLine($" ✓ Duration: {source.DurationMs / 1000.0:F1}s"); + Console.WriteLine($" ✓ Codec: {source.Codec}"); + + decoder = CreateDecoderForCodec(source.Codec, source.SampleRate, source.Channels); + + if (decoder is AacDecoder aacDecoder && source.DecoderConfig != null) + { + aacDecoder.Initialize(source.DecoderConfig); + } + + backend = CreateBackend(); + Console.WriteLine($" ✓ {backend.Name} backend"); + + await PlayPipelineAsync(source, decoder, backend, seconds); + } + catch (Exception ex) + { + Console.WriteLine($" ❌ Error: {ex.Message}"); + } + finally + { + backend?.Dispose(); + decoder?.Dispose(); + if (source != null) + await source.DisposeAsync(); + } + } + + /// + /// Проиграть по прямой ссылке на аудио. + /// + public static async Task PlayDirectUrlAsync(string url, int seconds = 10) + { + PrintHeader("DIRECT URL TEST"); + Console.WriteLine($" URL: {url[..Math.Min(70, url.Length)]}..."); + Console.WriteLine(); + + IAudioSource? source = null; + IAudioDecoder? decoder = null; + IPlaybackBackend? backend = null; + AudioCacheManager? testCache = null; + + try + { + var format = AudioSourceFactory.DetectFormat(url); + Console.WriteLine($" Format: {format}"); + + long contentLength = await SharedHttpClient.GetContentLengthAsync(url); + Console.WriteLine($" Size: {(contentLength > 0 ? $"{contentLength / 1024.0 / 1024.0:F1} MB" : "Unknown")}"); + + // Создаём временный кэш + testCache = new AudioCacheManager(); + var expectedCodec = AudioSourceFactory.GetCodecForFormat(format); + var trackId = "test_" + Guid.NewGuid().ToString()[..8]; + + if (format == AudioFormat.Hls) + { + source = new HlsStreamSource(url, SharedHttpClient.Instance); + } + else + { + string cacheKey = AudioSourceFactory.BuildCacheKey(trackId, format, 0); + + source = new CachingStreamSource( + cacheKey, + trackId, + url, + contentLength > 0 ? contentLength : 50 * 1024 * 1024, + format, + expectedCodec, + 0, // TODO: Bitrate get + SharedHttpClient.Instance, + testCache); + } + + if (!await source.InitializeAsync()) + { + Console.WriteLine(" ❌ Failed to initialize"); + return; + } + + Console.WriteLine($" ✓ Duration: {source.DurationMs / 1000.0:F1}s"); + Console.WriteLine($" ✓ Codec: {source.Codec}"); + + decoder = CreateDecoderForCodec(source.Codec, source.SampleRate, source.Channels); + + if (decoder is AacDecoder aacDecoder && source.DecoderConfig != null) + { + aacDecoder.Initialize(source.DecoderConfig); + } + + backend = CreateBackend(); + Console.WriteLine($" ✓ {backend.Name} backend"); + + await PlayPipelineAsync(source, decoder, backend, seconds); + } + catch (Exception ex) + { + Console.WriteLine($" ❌ Error: {ex.Message}"); + Console.WriteLine(ex.StackTrace); + } + finally + { + backend?.Dispose(); + decoder?.Dispose(); + if (source != null) + await source.DisposeAsync(); + if (testCache != null) + await testCache.DisposeAsync(); + } + } + + #region Pipeline + + private static async Task PlayPipelineAsync( + IAudioSource source, + IAudioDecoder decoder, + IPlaybackBackend backend, + int seconds, + CancellationToken ct = default) + { + var pcmBuffer = new CircularBuffer(decoder.SampleRate * decoder.Channels * 4); + var decodeOutput = new float[decoder.MaxFrameSize * decoder.Channels]; + + int framesRead = 0; + long bytesRead = 0; + long lastTimestampMs = 0; + bool endOfStream = false; + string? error = null; + + backend.Initialize(decoder.SampleRate, decoder.Channels, buffer => + { + int read = pcmBuffer.Read(buffer); + if (read < buffer.Length) + buffer[read..].Clear(); + return read / decoder.Channels; + }); + + using var cts = CancellationTokenSource.CreateLinkedTokenSource(ct); + + var decodeTask = Task.Run(async () => + { + try + { + while (!cts.Token.IsCancellationRequested) + { + while (pcmBuffer.Available < decodeOutput.Length && !cts.Token.IsCancellationRequested) + { + await Task.Delay(5, cts.Token); + } + + var frame = await source.ReadFrameAsync(cts.Token); + + if (frame == null) + { + endOfStream = true; + break; + } + + framesRead++; + bytesRead += frame.Value.Data.Length; + lastTimestampMs = frame.Value.TimestampMs; + + try + { + int samples = decoder.Decode(frame.Value.Data.Span, decodeOutput); + if (samples > 0) + { + pcmBuffer.Write(decodeOutput.AsSpan(0, samples * decoder.Channels)); + } + } + catch (Exception ex) + { + if (framesRead < 10) + Console.WriteLine($"\n ⚠ Decode: {ex.Message}"); + } + } + } + catch (OperationCanceledException) { } + catch (Exception ex) + { + error = ex.Message; + } + }, cts.Token); + + Console.WriteLine(); + Console.WriteLine("Buffering..."); + int minBuffer = decoder.SampleRate * decoder.Channels * MinBufferMs / 1000; + + using var bufferingCts = CancellationTokenSource.CreateLinkedTokenSource(ct); + bufferingCts.CancelAfter(BufferingTimeoutMs); + + int dots = 0; + try + { + while (pcmBuffer.Count < minBuffer && !endOfStream && error == null && !bufferingCts.Token.IsCancellationRequested) + { + await Task.Delay(100, bufferingCts.Token); + int pct = minBuffer > 0 ? Math.Min(pcmBuffer.Count * 100 / minBuffer, 100) : 0; + Console.Write($"\r [{new string('█', Math.Min(++dots % 20, 20))}{new string('░', Math.Max(0, 20 - dots % 20))}] {pct}% "); + } + } + catch (OperationCanceledException) when (bufferingCts.IsCancellationRequested && !ct.IsCancellationRequested) + { + Console.WriteLine("\r ⚠ Buffering timeout, starting anyway... "); + } + + Console.WriteLine($"\r Buffer ready: {pcmBuffer.Count} samples "); + + if (error != null) + { + Console.WriteLine($" ❌ Buffering error: {error}"); + cts.Cancel(); + return; + } + + Console.WriteLine(); + Console.WriteLine($"▶ Playing for {seconds} seconds..."); + Console.WriteLine(); + + backend.Start(); + var startTime = DateTime.Now; + + while ((DateTime.Now - startTime).TotalSeconds < seconds && !ct.IsCancellationRequested) + { + await Task.Delay(ProgressUpdateIntervalMs, ct); + + double bufferMs = (double)pcmBuffer.Count / decoder.SampleRate / decoder.Channels * 1000; + double positionSec = lastTimestampMs / 1000.0; + double durationSec = source.DurationMs > 0 ? source.DurationMs / 1000.0 : seconds; + + int progress = durationSec > 0 ? (int)(positionSec / durationSec * 40) : 0; + progress = Math.Clamp(progress, 0, 40); + string bar = new string('█', progress) + new string('░', 40 - progress); + + Console.Write($"\r ▶ [{bar}] {positionSec:F1}s / {durationSec:F1}s | Buf: {bufferMs:F0}ms | Cache: {source.BufferProgress:F0}% "); + + if (endOfStream) + { + Console.WriteLine("\n\n 🏁 End of stream"); + break; + } + + if (error != null) + { + Console.WriteLine($"\n\n ❌ Error: {error}"); + break; + } + } + + backend.Stop(); + cts.Cancel(); + + try + { + await decodeTask.WaitAsync(TimeSpan.FromSeconds(2)); + } + catch { } + + PrintSummary(framesRead, bytesRead, lastTimestampMs, source.BufferProgress, endOfStream, error); + } + + #endregion + + #region Factory Methods + + private static async Task<(IAudioSource? source, IAudioDecoder? decoder)> CreateSourceAndDecoderAsync( + TrackInfo track, + string url, + long size, + string codec, + int bitrate, + string container, + AudioCacheManager cacheManager, + CancellationToken ct) + { + IAudioSource source; + IAudioDecoder decoder; + + if (track.IsHlsOnly || container == "m3u8") + { + Console.WriteLine(" → Using HLS source (RAM-only)"); + source = new HlsStreamSource(url, SharedHttpClient.Instance); + decoder = new AacDecoder(44100, 2); + } + else if (container == "webm" || codec == "Opus") + { + Console.WriteLine(" → Using CachingSource (WebM/Opus)"); + string cacheKey = AudioSourceFactory.BuildCacheKey(track.Id, AudioFormat.WebM, bitrate); + source = new CachingStreamSource( + cacheKey, + track.Id, + url, + size > 0 ? size : 50 * 1024 * 1024, + AudioFormat.WebM, + AudioCodec.Opus, + bitrate, + SharedHttpClient.Instance, + cacheManager); + decoder = new OpusDecoder(48000, 2); + } + else + { + Console.WriteLine(" → Using CachingSource (MP4/AAC)"); + string cacheKey = AudioSourceFactory.BuildCacheKey(track.Id, AudioFormat.Mp4, bitrate); + source = new CachingStreamSource( + cacheKey, + track.Id, + url, + size > 0 ? size : 50 * 1024 * 1024, + AudioFormat.Mp4, + AudioCodec.Aac, + bitrate, + SharedHttpClient.Instance, + cacheManager); + decoder = new AacDecoder(44100, 2); + } + + Console.WriteLine(" → Initializing source..."); + if (!await source.InitializeAsync(ct)) + { + return (null, null); + } + + if (source.Codec != decoder.Codec) + { + Console.WriteLine($" → Switching decoder to {source.Codec}"); + decoder.Dispose(); + decoder = CreateDecoderForCodec(source.Codec, source.SampleRate, source.Channels); + } + + if (decoder is AacDecoder aacDecoder && source.DecoderConfig != null) + { + aacDecoder.Initialize(source.DecoderConfig); + Console.WriteLine(" → AAC decoder initialized with DecoderConfig"); + } + + return (source, decoder); + } + + private static IAudioDecoder CreateDecoderForCodec(AudioCodec codec, int sampleRate, int channels) + { + return codec switch + { + AudioCodec.Opus => new OpusDecoder( + sampleRate > 0 ? sampleRate : 48000, + channels > 0 ? channels : 2), + AudioCodec.Aac => new AacDecoder( + sampleRate > 0 ? sampleRate : 44100, + channels > 0 ? channels : 2), + _ => throw new NotSupportedException($"Codec {codec} not supported") + }; + } + + private static IPlaybackBackend CreateBackend() + { + try + { + return new NAudioBackend(); + } + catch (Exception ex) + { + Log.Warn($"[QuickTester] NAudio unavailable: {ex.Message}, using NullBackend"); + return new NullAudioBackend(); + } + } + + #endregion + + #region Helpers + + private static void PrintHeader(string title) + { + Console.WriteLine(); + Console.WriteLine("╔════════════════════════════════════════════════════════════╗"); + Console.WriteLine($"║ 🎵 {title,-42} ║"); + Console.WriteLine("╚════════════════════════════════════════════════════════════╝"); + } + + private static void PrintSummary(int framesRead, long bytesRead, long lastTimestampMs, double bufferProgress, bool endOfStream, string? error) + { + Console.WriteLine(); + Console.WriteLine("════════════════════════════════════════════════════════════"); + Console.WriteLine($" Frames decoded: {framesRead}"); + Console.WriteLine($" Data processed: {bytesRead / 1024.0:F1} KB"); + Console.WriteLine($" Last position: {lastTimestampMs / 1000.0:F1}s"); + Console.WriteLine($" Cache progress: {bufferProgress:F0}%"); + Console.WriteLine($" Status: {(endOfStream ? "✓ Completed" : error != null ? $"❌ {error}" : "⏹ Stopped")}"); + Console.WriteLine("════════════════════════════════════════════════════════════"); + } + + private static string? ExtractVideoId(string input) + { + if (string.IsNullOrWhiteSpace(input)) + return null; + + input = input.Trim(); + + if (System.Text.RegularExpressions.Regex.IsMatch(input, @"^[a-zA-Z0-9_-]{11}$")) + return input; + + var match = System.Text.RegularExpressions.Regex.Match(input, @"[?&]v=([a-zA-Z0-9_-]{11})"); + if (match.Success) return match.Groups[1].Value; + + match = System.Text.RegularExpressions.Regex.Match(input, @"youtu\.be/([a-zA-Z0-9_-]{11})"); + if (match.Success) return match.Groups[1].Value; + + match = System.Text.RegularExpressions.Regex.Match(input, @"embed/([a-zA-Z0-9_-]{11})"); + if (match.Success) return match.Groups[1].Value; + + match = System.Text.RegularExpressions.Regex.Match(input, @"shorts/([a-zA-Z0-9_-]{11})"); + if (match.Success) return match.Groups[1].Value; + + return null; + } + + #endregion +} \ No newline at end of file diff --git a/Core/Converters/AppConverters.axaml b/Core/Converters/AppConverters.axaml index 3cc33e3..4319e87 100644 --- a/Core/Converters/AppConverters.axaml +++ b/Core/Converters/AppConverters.axaml @@ -23,5 +23,6 @@ + \ No newline at end of file diff --git a/Core/Converters/AppConverters.cs b/Core/Converters/AppConverters.cs index edf80fa..208edf9 100644 --- a/Core/Converters/AppConverters.cs +++ b/Core/Converters/AppConverters.cs @@ -429,4 +429,49 @@ public sealed class WindowButtonVisibilityConverter : IValueConverter public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture) => throw new NotImplementedException(); +} + +/// +/// Конвертирует NotificationSeverity в Color из текущей темы. +/// Error → SystemError, Warning → SystemWarnOrange, Info → SystemInfoBlue, Success → Accent. +/// +public sealed class SeverityToColorConverter : IValueConverter +{ + public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture) + { + var severity = value switch + { + NotificationSeverity s => s, + int i => (NotificationSeverity)i, + _ => NotificationSeverity.Info + }; + + var resourceKey = severity switch + { + NotificationSeverity.Error => "SystemError", + NotificationSeverity.Warning => "SystemWarnOrange", + NotificationSeverity.Info => "SystemInfoBlue", + NotificationSeverity.Success => "Accent", + _ => "TextMuted" + }; + + if (Avalonia.Application.Current?.Resources.TryGetResource(resourceKey, null, out var resource) == true) + { + if (resource is Color color) return color; + if (resource is SolidColorBrush brush) return brush.Color; + } + + // Fallback + return severity switch + { + NotificationSeverity.Error => Color.Parse("#FF5555"), + NotificationSeverity.Warning => Color.Parse("#FFB86C"), + NotificationSeverity.Info => Color.Parse("#8BE9FD"), + NotificationSeverity.Success => Color.Parse("#50C878"), + _ => Color.Parse("#6272A4") + }; + } + + public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture) + => throw new NotSupportedException(); } \ No newline at end of file diff --git a/Core/Data/DesignTimeDbContextFactory.cs b/Core/Data/DesignTimeDbContextFactory.cs index c997a87..265fb63 100644 --- a/Core/Data/DesignTimeDbContextFactory.cs +++ b/Core/Data/DesignTimeDbContextFactory.cs @@ -16,7 +16,7 @@ public LibraryDbContext CreateDbContext(string[] args) // Use a temporary path for design-time operations var dbPath = Path.Combine( Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), - G.AppId, G.File.Database); + G.AppId, G.FilePath.Database); Directory.CreateDirectory(Path.GetDirectoryName(dbPath)!); diff --git a/Core/Data/Entities/NotificationEntity.cs b/Core/Data/Entities/NotificationEntity.cs new file mode 100644 index 0000000..b15c498 --- /dev/null +++ b/Core/Data/Entities/NotificationEntity.cs @@ -0,0 +1,32 @@ +namespace LMP.Core.Data.Entities; + +public sealed class NotificationEntity +{ + public string Id { get; set; } = string.Empty; + + /// Ключ локализации заголовка. + public string? TitleKey { get; set; } + + /// Готовый текст заголовка (fallback). + public string? TitleRaw { get; set; } + + /// Ключ локализации сообщения. + public string? MessageKey { get; set; } + + /// Готовый текст сообщения (fallback). + public string? MessageRaw { get; set; } + + /// Аргументы сообщения (JSON array). + public string? MessageArgsJson { get; set; } + + /// Ключ локализации рекомендации. + public string? RecommendationKey { get; set; } + + public int Severity { get; set; } + public bool IsRead { get; set; } + public string? TrackId { get; set; } + public string? TrackTitle { get; set; } + public string? ExceptionDetails { get; set; } + public string? AttemptsJson { get; set; } + public DateTime CreatedAt { get; set; } +} \ No newline at end of file diff --git a/Core/Data/LibraryDbContext.cs b/Core/Data/LibraryDbContext.cs index 5df1854..678e0be 100644 --- a/Core/Data/LibraryDbContext.cs +++ b/Core/Data/LibraryDbContext.cs @@ -10,6 +10,7 @@ public class LibraryDbContext(DbContextOptions options) : DbCo public DbSet PlaylistTracks => Set(); public DbSet RecentlyPlayed => Set(); public DbSet Settings => Set(); + public DbSet Notifications => Set(); protected override void OnModelCreating(ModelBuilder modelBuilder) { @@ -22,7 +23,7 @@ protected override void OnModelCreating(ModelBuilder modelBuilder) entity.Property(e => e.Author).HasMaxLength(256); entity.Property(e => e.Url).HasMaxLength(512); entity.Property(e => e.ThumbnailUrl).HasMaxLength(512); - + entity.HasIndex(e => e.IsLiked); entity.HasIndex(e => e.IsDownloaded); entity.HasIndex(e => e.UpdatedAt); @@ -41,17 +42,17 @@ protected override void OnModelCreating(ModelBuilder modelBuilder) modelBuilder.Entity(entity => { entity.HasKey(e => new { e.PlaylistId, e.TrackId }); - + entity.HasOne(e => e.Playlist) .WithMany(p => p.PlaylistTracks) .HasForeignKey(e => e.PlaylistId) .OnDelete(DeleteBehavior.Cascade); - + entity.HasOne(e => e.Track) .WithMany(t => t.PlaylistTracks) .HasForeignKey(e => e.TrackId) .OnDelete(DeleteBehavior.Cascade); - + entity.HasIndex(e => new { e.PlaylistId, e.Position }); }); @@ -59,7 +60,7 @@ protected override void OnModelCreating(ModelBuilder modelBuilder) modelBuilder.Entity(entity => { entity.HasKey(e => e.Id); - entity.Property(e => e.Id).ValueGeneratedOnAdd(); // Auto-increment + entity.Property(e => e.Id).ValueGeneratedOnAdd(); entity.HasIndex(e => e.TrackId); entity.HasIndex(e => e.PlayedAt); }); @@ -70,5 +71,23 @@ protected override void OnModelCreating(ModelBuilder modelBuilder) entity.HasKey(e => e.Key); entity.Property(e => e.Key).HasMaxLength(128); }); + + // === Notifications === + modelBuilder.Entity(entity => + { + entity.HasKey(e => e.Id); + entity.Property(e => e.Id).HasMaxLength(36); + entity.Property(e => e.TitleKey).HasMaxLength(128); + entity.Property(e => e.TitleRaw).HasMaxLength(500); + entity.Property(e => e.MessageKey).HasMaxLength(128); + entity.Property(e => e.MessageRaw).HasMaxLength(2000); + entity.Property(e => e.RecommendationKey).HasMaxLength(128); + entity.Property(e => e.TrackId).HasMaxLength(64); + entity.Property(e => e.TrackTitle).HasMaxLength(500); + // AttemptsJson, MessageArgsJson, ExceptionDetails — без ограничений + + entity.HasIndex(e => e.CreatedAt); + entity.HasIndex(e => e.IsRead); + }); } } \ No newline at end of file diff --git a/Core/Data/Repositories/INotificationRepository.cs b/Core/Data/Repositories/INotificationRepository.cs new file mode 100644 index 0000000..d87123f --- /dev/null +++ b/Core/Data/Repositories/INotificationRepository.cs @@ -0,0 +1,39 @@ +using LMP.Core.Data.Entities; + +namespace LMP.Core.Data.Repositories; + +/// +/// Репозиторий для персистентного хранения уведомлений. +/// +public interface INotificationRepository +{ + /// + /// Получить последние уведомления. + /// + Task> GetRecentAsync(int limit = 50, CancellationToken ct = default); + + /// + /// Добавить уведомление. + /// + Task AddAsync(NotificationEntity entity, CancellationToken ct = default); + + /// + /// Пометить все как прочитанные. + /// + Task MarkAllAsReadAsync(CancellationToken ct = default); + + /// + /// Удалить все уведомления. + /// + Task ClearAllAsync(CancellationToken ct = default); + + /// + /// Количество непрочитанных. + /// + Task GetUnreadCountAsync(CancellationToken ct = default); + + /// + /// Удалить старые уведомления, оставив не более . + /// + Task PruneAsync(int keepCount = 100, CancellationToken ct = default); +} \ No newline at end of file diff --git a/Core/Data/Repositories/IPlaylistRepository.cs b/Core/Data/Repositories/IPlaylistRepository.cs index 7d1fc87..00d7331 100644 --- a/Core/Data/Repositories/IPlaylistRepository.cs +++ b/Core/Data/Repositories/IPlaylistRepository.cs @@ -20,6 +20,13 @@ public interface IPlaylistRepository Task ContainsTrackAsync(string playlistId, string trackId, CancellationToken ct = default); Task> GetPlaylistsForTrackAsync(string trackId, CancellationToken ct = default); /// + /// Batch-загрузка плейлистов для нескольких треков за один SQL-запрос. + /// Возвращает словарь: trackId → набор playlistId. + /// + Task>> GetPlaylistsForTracksAsync( + IEnumerable trackIds, + CancellationToken ct = default); + /// /// Gets all playlists with their track counts (more efficient than loading all track IDs). /// Task> GetAllWithCountsAsync(CancellationToken ct = default); diff --git a/Core/Data/Repositories/NotificationRepository.cs b/Core/Data/Repositories/NotificationRepository.cs new file mode 100644 index 0000000..959d51a --- /dev/null +++ b/Core/Data/Repositories/NotificationRepository.cs @@ -0,0 +1,70 @@ +using LMP.Core.Data.Entities; +using Microsoft.EntityFrameworkCore; + +namespace LMP.Core.Data.Repositories; + +public sealed class NotificationRepository : INotificationRepository +{ + private readonly IDbContextFactory _dbFactory; + + public NotificationRepository(IDbContextFactory dbFactory) + { + _dbFactory = dbFactory; + } + + public async Task> GetRecentAsync(int limit = 50, CancellationToken ct = default) + { + await using var db = await _dbFactory.CreateDbContextAsync(ct); + return await db.Notifications + .OrderByDescending(n => n.CreatedAt) + .Take(limit) + .AsNoTracking() + .ToListAsync(ct); + } + + public async Task AddAsync(NotificationEntity entity, CancellationToken ct = default) + { + await using var db = await _dbFactory.CreateDbContextAsync(ct); + db.Notifications.Add(entity); + await db.SaveChangesAsync(ct); + } + + public async Task MarkAllAsReadAsync(CancellationToken ct = default) + { + await using var db = await _dbFactory.CreateDbContextAsync(ct); + await db.Notifications + .Where(n => !n.IsRead) + .ExecuteUpdateAsync(s => s.SetProperty(n => n.IsRead, true), ct); + } + + public async Task ClearAllAsync(CancellationToken ct = default) + { + await using var db = await _dbFactory.CreateDbContextAsync(ct); + await db.Notifications.ExecuteDeleteAsync(ct); + } + + public async Task GetUnreadCountAsync(CancellationToken ct = default) + { + await using var db = await _dbFactory.CreateDbContextAsync(ct); + return await db.Notifications.CountAsync(n => !n.IsRead, ct); + } + + public async Task PruneAsync(int keepCount = 100, CancellationToken ct = default) + { + await using var db = await _dbFactory.CreateDbContextAsync(ct); + + // Находим дату отсечки + var cutoffDate = await db.Notifications + .OrderByDescending(n => n.CreatedAt) + .Skip(keepCount) + .Select(n => n.CreatedAt) + .FirstOrDefaultAsync(ct); + + if (cutoffDate != default) + { + await db.Notifications + .Where(n => n.CreatedAt < cutoffDate) + .ExecuteDeleteAsync(ct); + } + } +} \ No newline at end of file diff --git a/Core/Data/Repositories/PlaylistRepository.cs b/Core/Data/Repositories/PlaylistRepository.cs index 5df0272..0d43152 100644 --- a/Core/Data/Repositories/PlaylistRepository.cs +++ b/Core/Data/Repositories/PlaylistRepository.cs @@ -278,6 +278,39 @@ public async Task> GetPlaylistsForTrackAsync(string trackId, Can return [.. ids]; } + public async Task>> GetPlaylistsForTracksAsync( + IEnumerable trackIds, + CancellationToken ct = default) + { + var ids = trackIds as IList ?? [.. trackIds]; + + if (ids.Count == 0) + return []; + + await using var ctx = await _factory.CreateDbContextAsync(ct); + + // Один SQL-запрос вместо N + var links = await ctx.PlaylistTracks + .Where(pt => ids.Contains(pt.TrackId)) + .Select(pt => new { pt.TrackId, pt.PlaylistId }) + .ToListAsync(ct); + + // Группируем в памяти + var result = new Dictionary>(ids.Count); + + foreach (var link in links) + { + if (!result.TryGetValue(link.TrackId, out var set)) + { + set = []; + result[link.TrackId] = set; + } + set.Add(link.PlaylistId); + } + + return result; + } + public async Task GetTotalDurationTicksAsync(string playlistId, CancellationToken ct = default) { await using var ctx = await _factory.CreateDbContextAsync(ct); diff --git a/Core/Exceptions/AudioException.cs b/Core/Exceptions/AudioException.cs new file mode 100644 index 0000000..aae813a --- /dev/null +++ b/Core/Exceptions/AudioException.cs @@ -0,0 +1,169 @@ +namespace LMP.Core.Exceptions; + +/// +/// Базовое исключение для аудио операций. +/// +public class AudioException : Exception +{ + public AudioException(string message) : base(message) { } + public AudioException(string message, Exception inner) : base(message, inner) { } +} + +/// +/// Ошибка декодирования аудио. +/// +public class AudioDecoderException(string message, int errorCode = 0) : AudioException(message) +{ + public int ErrorCode { get; } = errorCode; +} + +/// +/// Ошибка источника аудио. +/// +public class AudioSourceException : AudioException +{ + public AudioSourceException(string message) : base(message) { } + public AudioSourceException(string message, Exception inner) : base(message, inner) { } +} + +/// +/// URL истёк и требует обновления. +/// +public class UrlExpiredException(string expiredUrl, string? trackId = null) + : AudioSourceException($"URL expired: {expiredUrl[..Math.Min(50, expiredUrl.Length)]}...") +{ + public string? TrackId { get; } = trackId; + public string ExpiredUrl { get; } = expiredUrl; +} + +/// +/// Неподдерживаемый формат аудио. +/// +public class UnsupportedFormatException(string format) + : AudioException($"Unsupported audio format: {format}") +{ + public string Format { get; } = format; +} + +/// +/// Фатальная ошибка загрузки чанков — стрим безвозвратно недоступен. +/// +/// +/// Когда выбрасывается: +/// +/// Превышен лимит последовательных HTTP 403 ответов ( в CachingStreamSource) +/// YouTube вернул UMP формат вместо raw audio +/// Все retry-попытки исчерпаны без успеха +/// +/// +/// Обработка: +/// Исключение пробрасывается через: +/// +/// CachingStreamSource.EnsureChunkAsync() +/// → AudioPipeline.DecoderLoopAsync() [onError callback] +/// → AudioPlayer.HandleError() +/// → AudioPlayer.Events.ErrorOccurred +/// → AudioEngine.OnErrorOccurred +/// → PlaybackErrorOrchestrator +/// +/// +/// Действия оркестратора зависят от : +/// +/// Dialog — пауза, модальный диалог +/// ToastAndSkip — toast + авто-skip +/// Ignore — только skip +/// +/// +public class ChunkDownloadFatalException : AudioSourceException +{ + /// + /// Индекс чанка, на котором произошла ошибка. + /// + public int ChunkIndex { get; } + + /// + /// Количество последовательных неудачных попыток. + /// + public int ConsecutiveFailures { get; } + + /// + /// Причина ошибки. + /// + public ChunkDownloadFailureReason Reason { get; } + + /// + /// ID трека (для диагностики). + /// + public string? TrackId { get; } + + /// + /// HTTP статус код последнего неудачного запроса (если применимо). + /// + public int? HttpStatusCode { get; } + + public ChunkDownloadFatalException( + string message, + int chunkIndex, + int consecutiveFailures, + ChunkDownloadFailureReason reason, + string? trackId = null, + int? httpStatusCode = null) + : base(message) + { + ChunkIndex = chunkIndex; + ConsecutiveFailures = consecutiveFailures; + Reason = reason; + TrackId = trackId; + HttpStatusCode = httpStatusCode; + } + + public ChunkDownloadFatalException( + string message, + int chunkIndex, + int consecutiveFailures, + ChunkDownloadFailureReason reason, + string? trackId, + int? httpStatusCode, + Exception innerException) + : base(message, innerException) + { + ChunkIndex = chunkIndex; + ConsecutiveFailures = consecutiveFailures; + Reason = reason; + TrackId = trackId; + HttpStatusCode = httpStatusCode; + } + + /// + /// Возвращает ключ локализации для пользовательского сообщения. + /// + public string GetLocalizationKey() => Reason switch + { + ChunkDownloadFailureReason.Forbidden403 => "Error_Stream_Forbidden", + ChunkDownloadFailureReason.UmpFormat => "Error_Stream_UmpFormat", + ChunkDownloadFailureReason.MaxRetriesExceeded => "Error_Stream_MaxRetries", + ChunkDownloadFailureReason.NetworkError => "Error_Stream_Network", + _ => "Error_Stream_Unknown" + }; +} + +/// +/// Причина фатальной ошибки загрузки чанков. +/// +public enum ChunkDownloadFailureReason +{ + /// Превышен лимит HTTP 403 Forbidden ответов. + Forbidden403, + + /// YouTube вернул UMP (encrypted) формат вместо raw audio. + UmpFormat, + + /// Превышен лимит retry-попыток. + MaxRetriesExceeded, + + /// Сетевая ошибка (timeout, connection reset). + NetworkError, + + /// Неизвестная ошибка. + Unknown +} \ No newline at end of file diff --git a/Core/Helpers/ErrorSoundPlayer.cs b/Core/Helpers/ErrorSoundPlayer.cs new file mode 100644 index 0000000..81005f4 --- /dev/null +++ b/Core/Helpers/ErrorSoundPlayer.cs @@ -0,0 +1,92 @@ +using System.Runtime.InteropServices; + +namespace LMP.Core.Helpers; + +/// +/// Воспроизводит системные звуки. +/// +public static partial class ErrorSoundPlayer +{ + [LibraryImport("user32.dll")] + [return: MarshalAs(UnmanagedType.Bool)] + private static partial bool MessageBeep(uint type); + + // Windows MessageBeep types + private const uint MB_ICONERROR = 0x00000010; + private const uint MB_ICONWARNING = 0x00000030; + private const uint MB_OK = 0x00000000; + + /// + /// Воспроизводит системный звук ошибки. + /// + public static void PlayError() + { + try + { + if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows)) + { + MessageBeep(MB_ICONERROR); + } + else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux)) + { + // paplay — PulseAudio, работает на большинстве дистрибутивов + _ = Task.Run(() => + { + try + { + var process = System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo + { + FileName = "paplay", + Arguments = "/usr/share/sounds/freedesktop/stereo/dialog-error.oga", + UseShellExecute = false, + CreateNoWindow = true + }); + process?.WaitForExit(2000); + } + catch { /* No sound system available */ } + }); + } + else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX)) + { + _ = Task.Run(() => + { + try + { + var process = System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo + { + FileName = "afplay", + Arguments = "/System/Library/Sounds/Basso.aiff", + UseShellExecute = false, + CreateNoWindow = true + }); + process?.WaitForExit(2000); + } + catch { /* ignore */ } + }); + } + } + catch (Exception ex) + { + Log.Debug($"[ErrorSound] Failed: {ex.Message}"); + } + } + + /// + /// Воспроизводит системный звук успеха. + /// + public static void PlaySuccess() + { + try + { + if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows)) + { + MessageBeep(MB_OK); + } + // Linux/macOS — аналогично с другими звуковыми файлами + } + catch (Exception ex) + { + Log.Debug($"[SuccessSound] Failed: {ex.Message}"); + } + } +} \ No newline at end of file diff --git a/Core/Helpers/LoggingHandler.cs b/Core/Helpers/LoggingHandler.cs new file mode 100644 index 0000000..9da6eea --- /dev/null +++ b/Core/Helpers/LoggingHandler.cs @@ -0,0 +1,63 @@ +namespace LMP.Core.Helpers; + +/// +/// HTTP handler для логирования всех запросов в DEBUG. +/// +public sealed class LoggingHandler(HttpMessageHandler innerHandler) : DelegatingHandler(innerHandler) +{ + protected override async Task SendAsync( + HttpRequestMessage request, CancellationToken cancellationToken) + { +#if DEBUG && HTTP_LOG + var sw = Stopwatch.StartNew(); + + Log.Debug($"[HTTP] → {request.Method} {request.RequestUri}"); + + if (request.Headers.Range != null) + Log.Debug($"[HTTP] Range: {request.Headers.Range}"); +#endif + + HttpResponseMessage response; +#if DEBUG && HTTP_LOG + try + { + response = await base.SendAsync(request, cancellationToken); + } + catch (Exception ex) + { + Log.Warn($"[HTTP] ✗ {request.Method} {request.RequestUri} - {ex.Message}"); + throw; + } +#else + try + { + response = await base.SendAsync(request, cancellationToken); + } + catch (Exception) + { + throw; + } +#endif + +#if DEBUG && HTTP_LOG + sw.Stop(); + + var status = (int)response.StatusCode; + var size = response.Content.Headers.ContentLength; + var sizeStr = size.HasValue ? $"{size.Value / 1024}KB" : "?"; + + var logLevel = status >= 400 ? "Warn" : "Trace"; + var symbol = status >= 400 ? "✗" : "✓"; + + Log.Debug($"[HTTP] {symbol} {status} {request.RequestUri?.AbsolutePath} ({sizeStr}, {sw.ElapsedMilliseconds}ms)"); + + // Для m3u8 логируем полный URL + if (request.RequestUri?.AbsolutePath.Contains("m3u8") == true) + { + Log.Debug($"[HTTP] M3U8 Full URL: {request.RequestUri}"); + } +#endif + + return response; + } +} \ No newline at end of file diff --git a/Core/Helpers/OsNotificationHelper.cs b/Core/Helpers/OsNotificationHelper.cs new file mode 100644 index 0000000..ec366f2 --- /dev/null +++ b/Core/Helpers/OsNotificationHelper.cs @@ -0,0 +1,124 @@ +using System.Diagnostics; +using System.Runtime.InteropServices; +using LMP.Core.Models; + +namespace LMP.Core.Helpers; + +/// +/// Кроссплатформенные уведомления ОС. +/// Минимальная реализация без внешних зависимостей. +/// +public static class OsNotificationHelper +{ + /// + /// Показывает уведомление ОС. + /// + public static async Task ShowAsync(string title, string message, NotificationSeverity severity) + { + try + { + if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows)) + { + await ShowWindowsToastAsync(title, message); + } + else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux)) + { + await ShowLinuxNotificationAsync(title, message, severity); + } + else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX)) + { + await ShowMacNotificationAsync(title, message); + } + } + catch (Exception ex) + { + Log.Debug($"[OsNotification] Failed: {ex.Message}"); + } + } + + private static async Task ShowWindowsToastAsync(string title, string message) + { + // PowerShell-based toast notification (works on Windows 10+) + var escapedTitle = title.Replace("'", "''").Replace("`", "``"); + var escapedMessage = message.Replace("'", "''").Replace("`", "``"); + + var script = $""" + [Windows.UI.Notifications.ToastNotificationManager, Windows.UI.Notifications, ContentType = WindowsRuntime] | Out-Null + [Windows.Data.Xml.Dom.XmlDocument, Windows.Data.Xml.Dom.XmlDocument, ContentType = WindowsRuntime] | Out-Null + $xml = @" + + + + {EscapeXml(title)} + {EscapeXml(message)} + + + + "@ + $XmlDocument = [Windows.Data.Xml.Dom.XmlDocument]::new() + $XmlDocument.LoadXml($xml) + $AppId = 'LiteMusicPlayer' + [Windows.UI.Notifications.ToastNotificationManager]::CreateToastNotifier($AppId).Show([Windows.UI.Notifications.ToastNotification]::new($XmlDocument)) + """; + + await RunProcessAsync("powershell", $"-NoProfile -NonInteractive -Command \"{script}\"", 5000); + } + + private static async Task ShowLinuxNotificationAsync(string title, string message, NotificationSeverity severity) + { + var urgency = severity switch + { + NotificationSeverity.Error => "critical", + NotificationSeverity.Warning => "normal", + _ => "low" + }; + + await RunProcessAsync("notify-send", + $"--urgency={urgency} --app-name=\"Lite Music Player\" \"{EscapeShell(title)}\" \"{EscapeShell(message)}\"", + 3000); + } + + private static async Task ShowMacNotificationAsync(string title, string message) + { + var script = $"display notification \"{EscapeAppleScript(message)}\" with title \"{EscapeAppleScript(title)}\""; + await RunProcessAsync("osascript", $"-e '{script}'", 3000); + } + + private static async Task RunProcessAsync(string fileName, string arguments, int timeoutMs) + { + using var process = new Process + { + StartInfo = new ProcessStartInfo + { + FileName = fileName, + Arguments = arguments, + UseShellExecute = false, + CreateNoWindow = true, + RedirectStandardOutput = true, + RedirectStandardError = true + } + }; + + process.Start(); + + using var cts = new CancellationTokenSource(timeoutMs); + try + { + await process.WaitForExitAsync(cts.Token); + } + catch (OperationCanceledException) + { + try { process.Kill(); } catch { /* ignore */ } + } + } + + private static string EscapeXml(string s) => + s.Replace("&", "&").Replace("<", "<").Replace(">", ">").Replace("\"", """); + + private static string EscapeShell(string s) => + s.Replace("\\", "\\\\").Replace("\"", "\\\"").Replace("$", "\\$").Replace("`", "\\`"); + + private static string EscapeAppleScript(string s) => + s.Replace("\\", "\\\\").Replace("\"", "\\\""); +} \ No newline at end of file diff --git a/Core/Helpers/StreamExtensions.cs b/Core/Helpers/StreamExtensions.cs new file mode 100644 index 0000000..e7a4518 --- /dev/null +++ b/Core/Helpers/StreamExtensions.cs @@ -0,0 +1,54 @@ +namespace LMP.Core.Helpers; + +/// +/// Extension методы для работы с потоками +/// +public static class StreamExtensions +{ + /// + /// Читает ровно указанное количество байт или выбрасывает исключение + /// + public static async ValueTask ReadExactlyAsync( + this Stream stream, + Memory buffer, + CancellationToken ct = default) + { + int totalRead = 0; + while (totalRead < buffer.Length) + { + int read = await stream.ReadAsync(buffer[totalRead..], ct); + if (read == 0) + { + throw new EndOfStreamException( + $"Expected {buffer.Length} bytes, got {totalRead}"); + } + totalRead += read; + } + } + + /// + /// Создаёт HttpClient оптимизированный для стриминга + /// + public static HttpClient CreateStreamingClient(TimeSpan timeout) + { + var handler = new SocketsHttpHandler + { + // Отключаем буферизацию для стриминга + MaxResponseHeadersLength = 64, + // Поддержка keep-alive + PooledConnectionLifetime = TimeSpan.FromMinutes(10), + PooledConnectionIdleTimeout = TimeSpan.FromMinutes(2), + // Автоматическая декомпрессия + AutomaticDecompression = System.Net.DecompressionMethods.All + }; + + return new HttpClient(handler) + { + Timeout = timeout, + DefaultRequestHeaders = + { + { "User-Agent", "Mozilla/5.0 (compatible; LMP/1.0)" } + } + }; + } +} \ No newline at end of file diff --git a/Core/Logger/AsyncLogProcessor.cs b/Core/Logger/AsyncLogProcessor.cs index 1a50e62..1f6541a 100644 --- a/Core/Logger/AsyncLogProcessor.cs +++ b/Core/Logger/AsyncLogProcessor.cs @@ -1,7 +1,7 @@ using System.Text; using System.Threading.Channels; -namespace LMP.Logger; +namespace LMP.Core.Logger; public sealed class AsyncLogProcessor : IDisposable, IAsyncDisposable { @@ -99,7 +99,7 @@ private async Task ProcessQueueAsync() // --- Метод для красивого цветного вывода --- #if DEBUG - private void WriteToConsole(LogMessage log, string formattedLine) + private static void WriteToConsole(LogMessage log, string formattedLine) { // Меняем цвет в зависимости от уровня var originalColor = Console.ForegroundColor; @@ -123,19 +123,13 @@ private void WriteToConsole(LogMessage log, string formattedLine) } #endif - private string FormatLog(LogMessage log) + private static string FormatLog(LogMessage log) { // Оптимизированное форматирование var sb = new StringBuilder(); sb.Append('[').Append(log.Timestamp.ToLocalTime().ToString("HH:mm:ss.fff")).Append("] "); sb.Append('[').Append(GetLevelString(log.Level)).Append("] "); - // Если добавил имя сборки (проекта) в LogMessage, раскомментируй: - // sb.Append('{').Append(log.AssemblyName).Append("} "); - - if (log.Category is not null) - sb.Append('[').Append(log.Category).Append("] "); - sb.Append(log.Message); if (log.Exception != null) diff --git a/Core/Logger/ILogger.cs b/Core/Logger/ILogger.cs index 81c0b7b..e888cb0 100644 --- a/Core/Logger/ILogger.cs +++ b/Core/Logger/ILogger.cs @@ -1,4 +1,4 @@ -namespace LMP.Logger; +namespace LMP.Core.Logger; public interface ILogger { diff --git a/Core/Logger/Log.cs b/Core/Logger/Log.cs index b639d20..ac59051 100644 --- a/Core/Logger/Log.cs +++ b/Core/Logger/Log.cs @@ -1,6 +1,6 @@ using System.Runtime.CompilerServices; -namespace LMP.Logger; +namespace LMP.Core.Logger; /// /// Глобальная статическая точка доступа к логгеру. @@ -38,19 +38,14 @@ public static void Shutdown() // Вспомогательный метод отправки [MethodImpl(MethodImplOptions.AggressiveInlining)] - private static void Enqueue(LogLevel level, string? message, Exception? ex = null, [CallerMemberName] string memberName = "") + private static void Enqueue(LogLevel level, string? message, Exception? ex = null) { if (!_isInitialized || _processor == null) return; // Если сообщение null, ничего не пишем (или пишем "null") string msg = message ?? "null"; - // Используем имя вызывающего метода как категорию, если не передана явно - // Это очень удобно: Log.Info("Test") внутри PlayerService автоматически пометит лог как [PlayerService] или [MethodName] - // Но для красоты лучше передавать категорию явно, или оставить "Global". - // В данной реализации: Категория = Имя Метода (CallerMemberName) для быстрой отладки. - - _processor.Enqueue(new LogMessage(level, memberName, msg, ex)); + _processor.Enqueue(new LogMessage(level, msg, ex)); } // --- API, совместимое с Debug.WriteLine --- @@ -60,7 +55,6 @@ private static void Enqueue(LogLevel level, string? message, Exception? ex = nul // Info - основной метод public static void Info(string message) => Enqueue(LogLevel.Info, message); - public static void Info(string message, string category) => _processor?.Enqueue(new LogMessage(LogLevel.Info, category, message)); public static void Warn(string message) => Enqueue(LogLevel.Warning, message); diff --git a/Core/Logger/LogLevel.cs b/Core/Logger/LogLevel.cs index ea6fd94..bbd6b92 100644 --- a/Core/Logger/LogLevel.cs +++ b/Core/Logger/LogLevel.cs @@ -1,4 +1,4 @@ -namespace LMP.Logger; +namespace LMP.Core.Logger; public enum LogLevel { diff --git a/Core/Logger/LogMessage.cs b/Core/Logger/LogMessage.cs index c7ad780..8612d82 100644 --- a/Core/Logger/LogMessage.cs +++ b/Core/Logger/LogMessage.cs @@ -1,10 +1,9 @@ -namespace LMP.Logger; +namespace LMP.Core.Logger; -public readonly struct LogMessage(LogLevel level, string category, string message, Exception? exception = null) +public readonly struct LogMessage(LogLevel level, string message, Exception? exception = null) { public DateTime Timestamp { get; } = DateTime.UtcNow; // Храним UTC, форматируем при записи public LogLevel Level { get; } = level; - public string Category { get; } = category; public string Message { get; } = message; public Exception? Exception { get; } = exception; public int ThreadId { get; } = Environment.CurrentManagedThreadId; diff --git a/Core/Models/AppJsonContext.cs b/Core/Models/AppJsonContext.cs index 1463847..364299d 100644 --- a/Core/Models/AppJsonContext.cs +++ b/Core/Models/AppJsonContext.cs @@ -1,5 +1,6 @@ using System.Text.Json; using System.Text.Json.Serialization; +using LMP.Core.Audio.Cache; using LMP.Core.Services; namespace LMP.Core.Models; @@ -12,9 +13,9 @@ namespace LMP.Core.Models; [JsonSerializable(typeof(List))] [JsonSerializable(typeof(Playlist))] [JsonSerializable(typeof(List))] -[JsonSerializable(typeof(StreamCacheMetadata))] -[JsonSerializable(typeof(List))] +[JsonSerializable(typeof(CacheEntry))] [JsonSerializable(typeof(ThemeSettings))] +[JsonSerializable(typeof(BootstrapSettings))] [JsonSourceGenerationOptions( WriteIndented = false, PropertyNamingPolicy = JsonKnownNamingPolicy.CamelCase, diff --git a/Core/Models/AppSettings.cs b/Core/Models/AppSettings.cs index d55ee7b..511599c 100644 --- a/Core/Models/AppSettings.cs +++ b/Core/Models/AppSettings.cs @@ -2,10 +2,12 @@ namespace LMP.Core.Models; public enum YoutubeClientProfile { - AndroidVR, // Oculus Quest (Текущий рабочий) - TV, // Smart TV / Console (Резервный) - Web, // Обычный браузер (Требует n-token, но иногда работает) - // iOS/Android пока убираем, так как они 100% требуют PO Token + WebRemix, // n + sig (Работают все ролики) + AndroidVR, // большинство роликов работают + Web, // n + sig + TV, // не работает + Ios, // HLS в основном + AndroidMusic // требует доп. действий } public enum InternetProfile @@ -16,6 +18,62 @@ public enum InternetProfile Ultra // Максимальное кэширование / Локальная сеть } +/// +/// Тип кривой интерполяции громкости. +/// +public enum VolumeCurveType +{ + /// Линейная: volume = t + Linear, + + /// Квадратичная: volume = t² (по умолчанию, перцептивно линейная) + Quadratic, + + /// Логарифмическая: volume = log2(1 + t) / log2(2) + Logarithmic, + + /// Кубическая: volume = t³ + Cubic, + + /// + /// "Скорость света": экспоненциальный рост в конце. + /// Формула: volume = (e^(t*2) - 1) / (e² - 1) + /// + SpeedOfLight +} + +/// +/// Поведение при критических ошибках воспроизведения. +/// +/// +/// Определяет реакцию системы на ошибки типа: +/// +/// — стрим недоступен (403, geo-block) +/// — фатальная ошибка загрузки чанков +/// +/// Используется в . +/// +public enum PlaybackErrorBehavior +{ + /// + /// Показать модальный диалог и остановить воспроизведение. + /// Требует явного действия пользователя. + /// + Dialog, + + /// + /// Показать toast-уведомление и автоматически перейти к следующему треку. + /// Также показывает OS-уведомление если приложение свёрнуто. + /// + ToastAndSkip, + + /// + /// Игнорировать ошибку и автоматически перейти к следующему треку. + /// Ошибка логируется, но пользователь не уведомляется. + /// + Ignore +} + public sealed class ProxySettings { public bool Enabled { get; set; } = false; @@ -56,17 +114,63 @@ public sealed class StorageSettings public bool AutoSaveToDownloads { get; set; } = false; } -public sealed class StreamingConfig +/// +/// Настройки аудио системы. +/// +public sealed class AudioSettings { - // Генерируется динамически на основе InternetProfile, но можно переопределить - public int ChunkSize { get; set; } = 128 * 1024; - public int ReadAheadChunks { get; set; } = 3; - public int MaxConcurrentDownloads { get; set; } = 4; - public int DownloadTimeoutMs { get; set; } = 45000; - public int VlcNetworkCachingMs { get; set; } = 2000; - public int MaxRamChunks { get; set; } = 128; // ~16MB при 128KB чанках - public int MaxBufferAheadChunks { get; init; } = 30; // ~30 сек при 128kbps - public bool DownloadFullTrack { get; init; } = false; // Качать весь трек? + /// + /// Включить boost громкости выше 100%. + /// Если false — MaxVolume просто увеличивает точность (больше шагов). + /// + public bool VolumeBoostEnabled { get; set; } = true; + + /// + /// Кривая интерполяции громкости. + /// + public VolumeCurveType VolumeCurve { get; set; } = VolumeCurveType.Quadratic; + + /// + /// Плавное изменение громкости (fade при изменении). + /// + public bool SmoothVolumeEnabled { get; set; } = false; + + /// + /// Скорость плавного изменения громкости (мс на полный переход). + /// + public int SmoothVolumeDurationMs { get; set; } = 150; + + /// + /// Нормализация громкости (выравнивание уровней между треками). + /// + public bool NormalizationEnabled { get; set; } = false; + + /// + /// Целевой уровень нормализации в LUFS. + /// + public float NormalizationTargetLufs { get; set; } = -14f; + + /// + /// Поведение при критических ошибках воспроизведения. + /// + /// + /// Применяется к ошибкам: + /// + /// StreamUnavailableException (403, geo-block, все клиенты failed) + /// ChunkDownloadFatalException (превышен лимит 403 при загрузке чанков) + /// + /// НЕ применяется к: + /// + /// BotDetectionException — всегда показывает диалог с таймером + /// LoginRequiredException — всегда показывает диалог (требует действия) + /// + /// + public PlaybackErrorBehavior CriticalErrorBehavior { get; set; } = PlaybackErrorBehavior.ToastAndSkip; + + /// + /// Воспроизводить звук при ошибке воспроизведения. + /// + public bool PlayErrorSound { get; set; } = true; } public enum RepeatMode @@ -97,6 +201,11 @@ public sealed class AppSettings public AudioQualityPreference QualityPreference { get; set; } = AudioQualityPreference.BestAvailable; public bool RememberTrackFormat { get; set; } = true; + /// + /// Расширенные настройки аудио. + /// + public AudioSettings Audio { get; set; } = new(); + // === Network === public InternetProfile InternetProfile { get; set; } = InternetProfile.Medium; // Добавляем выбор клиента (по умолчанию VR, так как он сейчас работает) @@ -116,6 +225,11 @@ public sealed class AppSettings public int SearchCacheTtlMinutes { get; set; } = 120; public bool EnableSmoothLoading { get; set; } = true; + /// + /// Ширина панели уведомлений. + /// + public int NotificationPanelWidth { get; set; } = 360; + // === Fake Account === public string? FakeAccountChannelUrl { get; set; } diff --git a/Core/Models/BootstrapSettings.cs b/Core/Models/BootstrapSettings.cs new file mode 100644 index 0000000..d8a3e4b --- /dev/null +++ b/Core/Models/BootstrapSettings.cs @@ -0,0 +1,79 @@ +using System.Text.Json; +using System.Text.Json.Serialization; + +namespace LMP.Core.Models; + +public sealed class BootstrapSettings +{ + public string LanguageCode { get; set; } = "en"; + public bool IsFirstRun { get; set; } = true; + public string? ThemeJson { get; set; } + + [JsonIgnore] + private static readonly string FilePath = G.FilePath.Bootstrap; + + public static BootstrapSettings Load() + { + try + { + if (File.Exists(FilePath)) + { + var json = File.ReadAllText(FilePath); + var settings = JsonSerializer.Deserialize(json); + if (settings != null) + { + // ═══ ПРОВЕРКА ПЕРВОГО ЗАПУСКА ═══ + if (settings.IsFirstRun) + { + // Автоопределение языка при первом запуске + settings.LanguageCode = G.SystemInfo.DetectSystemLanguage(); + settings.IsFirstRun = false; + settings.Save(); + Log.Info($"[Bootstrap] First run, detected language: {settings.LanguageCode}"); + } + else + { + Log.Info($"[Bootstrap] Loaded: lang={settings.LanguageCode}"); + } + return settings; + } + } + } + catch (Exception ex) + { + Log.Warn($"[Bootstrap] Failed to load: {ex.Message}"); + } + + // ═══ ПЕРВЫЙ ЗАПУСК (файла нет) ═══ + var defaults = new BootstrapSettings + { + IsFirstRun = false, + LanguageCode = G.SystemInfo.DetectSystemLanguage() + }; + + Log.Info($"[Bootstrap] First run (no file), detected language: {defaults.LanguageCode}"); + defaults.Save(); + + return defaults; + } + + public void Save() + { + try + { + var json = JsonSerializer.Serialize(this, G.Json.Beautiful); + File.WriteAllText(FilePath, json); + } + catch (Exception ex) + { + Log.Error($"[Bootstrap] Failed to save: {ex.Message}"); + } + } + + public static BootstrapSettings Current { get; private set; } = new(); + + public static void Initialize() + { + Current = Load(); + } +} \ No newline at end of file diff --git a/Core/Models/IBatchItem.cs b/Core/Models/IBatchItem.cs index 3a13d12..ea72e49 100644 --- a/Core/Models/IBatchItem.cs +++ b/Core/Models/IBatchItem.cs @@ -36,7 +36,7 @@ public static class BatchItemExtensions public async ValueTask> CollectAsync(int count) => await source.TakeAsync(count).ToListAsync(); - /// + /// public ValueTaskAwaiter> GetAwaiter() => source.CollectAsync().GetAwaiter(); } diff --git a/Core/Models/Notification.cs b/Core/Models/Notification.cs new file mode 100644 index 0000000..5e19a22 --- /dev/null +++ b/Core/Models/Notification.cs @@ -0,0 +1,172 @@ +using System.Collections.ObjectModel; + +namespace LMP.Core.Models; + +/// +/// Уведомление в системе. +/// Поддерживает автоматический перевод при смене языка. +/// +public sealed class Notification +{ + public Guid Id { get; init; } = Guid.NewGuid(); + public DateTime Timestamp { get; init; } = DateTime.UtcNow; + + /// + /// Ключ локализации заголовка (например "Error_Playback_Title"). + /// Если null — используется . + /// + public string? TitleKey { get; init; } + + /// + /// Готовый текст заголовка (fallback если TitleKey не задан). + /// + public string? TitleRaw { get; init; } + + /// + /// Ключ локализации сообщения. + /// + public string? MessageKey { get; init; } + + /// + /// Готовый текст сообщения (fallback). + /// + public string? MessageRaw { get; init; } + + /// + /// Аргументы для форматирования сообщения (string.Format). + /// + public object[]? MessageArgs { get; init; } + + /// + /// Ключ локализации рекомендации. + /// + public string? RecommendationKey { get; init; } + + /// + /// Готовый текст рекомендации (fallback). + /// + public string? RecommendationRaw { get; init; } + + public NotificationSeverity Severity { get; init; } + public bool IsRead { get; set; } + public ObservableCollection? Attempts { get; init; } + public string? TrackId { get; init; } + public string? TrackTitle { get; init; } + public string? ExceptionDetails { get; init; } + + #region Computed Localized Properties + + private static Services.LocalizationService L => Services.LocalizationService.Instance; + + /// + /// Локализованный заголовок (автоматически переводится при смене языка). + /// + public string Title => !string.IsNullOrEmpty(TitleKey) + ? L[TitleKey] + : TitleRaw ?? ""; + + /// + /// Локализованное сообщение. + /// + public string Message + { + get + { + if (string.IsNullOrEmpty(MessageKey)) + return MessageRaw ?? ""; + + var template = L[MessageKey]; + + if (MessageArgs is { Length: > 0 }) + { + try + { + return string.Format(template, MessageArgs); + } + catch + { + return template; + } + } + + return template; + } + } + + /// + /// Локализованная рекомендация. + /// + public string? Recommendation => !string.IsNullOrEmpty(RecommendationKey) + ? L[RecommendationKey] + : RecommendationRaw; + + #endregion + + #region UI Helpers + + public bool HasDetails => Attempts?.Count > 0 || !string.IsNullOrEmpty(ExceptionDetails); + public bool HasRecommendation => !string.IsNullOrEmpty(Recommendation); + + public string TimeAgo + { + get + { + var elapsed = DateTime.UtcNow - Timestamp; + + return elapsed.TotalMinutes switch + { + < 1 => L["Notification_JustNow"], + < 60 => string.Format(L["Notification_MinutesAgo"], (int)elapsed.TotalMinutes), + < 1440 => string.Format(L["Notification_HoursAgo"], (int)elapsed.TotalHours), + _ => Timestamp.ToLocalTime().ToString("dd.MM.yyyy HH:mm") + }; + } + } + + public string Icon => Severity switch + { + NotificationSeverity.Info => "ℹ️", + NotificationSeverity.Success => "✅", + NotificationSeverity.Warning => "⚠️", + NotificationSeverity.Error => "❌", + _ => "📌" + }; + + #endregion +} + +public sealed record AttemptRecord( + string ClientName, + bool Success, + string? ErrorMessage, + DateTime Timestamp) +{ + public string FormattedTime => Timestamp.ToString("HH:mm:ss"); + public string StatusIcon => Success ? "✅" : "❌"; + + public string DisplayMessage + { + get + { + if (Success) + return Services.LocalizationService.Instance["Attempt_Success"]; + + if (!string.IsNullOrEmpty(ErrorMessage)) + { + return ErrorMessage.Length > 50 + ? ErrorMessage[..50] + "..." + : ErrorMessage; + } + + return Services.LocalizationService.Instance["Attempt_Failed"]; + } + } +} + +public enum NotificationSeverity +{ + Info, + Success, + Warning, + Error +} \ No newline at end of file diff --git a/Core/Models/Playlist.cs b/Core/Models/Playlist.cs index 6e9f729..3728ef5 100644 --- a/Core/Models/Playlist.cs +++ b/Core/Models/Playlist.cs @@ -41,7 +41,7 @@ public string Name public string? ThumbnailUrl { get; set; } public string? Author { get; set; } - public string? Description { get; set; } // Добавлено поле описания из YouTube + public string? Description { get; set; } public PlaylistSyncMode SyncMode { get; set; } = PlaylistSyncMode.LocalOnly; public string? YoutubeId { get; set; } diff --git a/Core/Models/RangeMap.cs b/Core/Models/RangeMap.cs deleted file mode 100644 index bae78d2..0000000 --- a/Core/Models/RangeMap.cs +++ /dev/null @@ -1,137 +0,0 @@ -using System.Text.Json; - -namespace LMP.Core.Models; - -/// -/// Serializable item for JSON storage -/// -public class RangeItem -{ - public long Start { get; set; } - public long End { get; set; } -} - -public class RangeMap -{ - // Используем класс вместо ValueTuple для надежной сериализации - private readonly List _ranges = []; - private readonly Lock _lock = new(); - - public long DownloadedBytes - { - get - { - lock (_lock) - { - return _ranges.Sum(static r => r.End - r.Start); - } - } - } - - public bool IsRangeComplete(long start, long end) - { - lock (_lock) - { - foreach (var range in _ranges) - { - if (range.Start <= start && range.End >= end) - return true; - } - return false; - } - } - - public void MarkComplete(long start, long end) - { - lock (_lock) - { - _ranges.Add(new RangeItem { Start = start, End = end }); - MergeRanges(); - } - } - - private void MergeRanges() - { - if (_ranges.Count < 2) return; - - var sorted = _ranges.OrderBy(static r => r.Start).ToList(); - var merged = new List(); - - var current = sorted[0]; - for (int i = 1; i < sorted.Count; i++) - { - if (sorted[i].Start <= current.End) - { - // Расширяем текущий диапазон - current.End = Math.Max(current.End, sorted[i].End); - } - else - { - merged.Add(current); - current = sorted[i]; - } - } - merged.Add(current); - - _ranges.Clear(); - _ranges.AddRange(merged); - } - - /// - /// Проверяет, полностью ли скачан файл - /// - public bool IsFullyDownloaded(long totalLength) - { - lock (_lock) - { - if (_ranges.Count == 0) - { - // Log.Debug($"IsFullyDownloaded: NO ranges, total={totalLength}"); - return false; - } - - if (_ranges.Count > 1) - { - // Log.Debug($"IsFullyDownloaded: {_ranges.Count} ranges (not merged?), total={totalLength}"); - return false; - } - - var range = _ranges[0]; - bool result = range.Start == 0 && range.End >= totalLength; - - return result; - } - } - - public string Serialize() - { - lock (_lock) - { - return JsonSerializer.Serialize(_ranges); - } - } - - public static RangeMap Deserialize(string json) - { - var map = new RangeMap(); - if (string.IsNullOrWhiteSpace(json)) return map; - - try - { - var ranges = JsonSerializer.Deserialize>(json); - if (ranges != null) - { - lock (map._lock) - { - map._ranges.AddRange(ranges); - } - } - } - catch (Exception) - { - // Если JSON старого формата (кортежи), пробуем проигнорировать или восстановить. - // Сейчас просто возвращаем пустой, но новый формат (RangeItem) исправит проблему в будущем. - } - return map; - } -} \ No newline at end of file diff --git a/Core/Models/RefCountedBitmap.cs b/Core/Models/RefCountedBitmap.cs index def5c5d..27bc4c3 100644 --- a/Core/Models/RefCountedBitmap.cs +++ b/Core/Models/RefCountedBitmap.cs @@ -10,19 +10,18 @@ namespace LMP.Core.Models; /// public sealed class RefCountedBitmap : IDisposable { - private readonly Bitmap _bitmap; private int _refCount; private bool _isDisposed; - private readonly object _lock = new(); + private readonly Lock _lock = new(); - public Bitmap Bitmap => _bitmap; + public Bitmap Bitmap { get; } public int RefCount => Volatile.Read(ref _refCount); public long EstimatedBytes { get; } public DateTime CachedAt { get; } public RefCountedBitmap(Bitmap bitmap) { - _bitmap = bitmap ?? throw new ArgumentNullException(nameof(bitmap)); + Bitmap = bitmap ?? throw new ArgumentNullException(nameof(bitmap)); _refCount = 1; // Начинаем с 1 (cache держит ссылку) long pixelCount = (long)bitmap.PixelSize.Width * bitmap.PixelSize.Height; @@ -73,8 +72,8 @@ private void DisposeInternal() try { - _bitmap.Dispose(); - Log.Trace($"[RefCountedBitmap] Disposed bitmap {_bitmap.PixelSize}"); + Bitmap.Dispose(); + Log.Trace($"[RefCountedBitmap] Disposed bitmap {Bitmap.PixelSize}"); } catch (Exception ex) { diff --git a/Core/Models/StreamingConfig.cs b/Core/Models/StreamingConfig.cs new file mode 100644 index 0000000..a5c5e13 --- /dev/null +++ b/Core/Models/StreamingConfig.cs @@ -0,0 +1,135 @@ +namespace LMP.Core.Models; + +/// +/// Конфигурация потоковой передачи и буферизации аудио. +/// +public sealed record StreamingConfig +{ + #region Chunk Settings + + /// Размер одного чанка в байтах. + public int ChunkSizeBytes { get; init; } = Defaults.ChunkSizeBytes; + + /// Количество чанков, читаемых вперёд. + public int ReadAheadChunks { get; init; } = Defaults.ReadAheadChunks; + + /// Максимальное количество чанков в RAM. + public int MaxRamChunks { get; init; } = Defaults.MaxRamChunks; + + #endregion + + #region Download Settings + + /// Максимальное количество параллельных загрузок. + public int MaxConcurrentDownloads { get; init; } = Defaults.MaxConcurrentDownloads; + + /// Таймаут загрузки чанка в мс. + public int DownloadTimeoutMs { get; init; } = Defaults.DownloadTimeoutMs; + + /// Количество повторных попыток. + public int MaxRetries { get; init; } = Defaults.MaxRetries; + + /// Задержка между повторами в мс. + public int RetryDelayMs { get; init; } = Defaults.RetryDelayMs; + + /// Загружать весь трек сразу. + public bool DownloadFullTrack { get; init; } = false; + + #endregion + + #region VLC Settings + + /// Размер сетевого кэша VLC в мс. + public int VlcNetworkCachingMs { get; init; } = Defaults.VlcNetworkCachingMs; + + #endregion + + #region Pre-Buffer Settings + + /// Секунды буферизации до старта. + public int InitialBufferSeconds { get; init; } = Defaults.InitialBufferSeconds; + + /// Максимум чанков до старта воспроизведения. + public int InitialReadAheadChunks { get; init; } = Defaults.InitialReadAheadChunks; + + /// Количество header-чанков для парсинга. + public int HeaderChunks { get; init; } = Defaults.HeaderChunks; + + /// Количество tail-чанков для cues. + public int TailChunks { get; init; } = Defaults.TailChunks; + + #endregion + + #region Throttling + + /// Чанков вперёд от позиции воспроизведения. + public int MaxReadAheadFromPlayback { get; init; } = Defaults.MaxReadAheadFromPlayback; + + /// Чанков качаем заранее. + public int MaxDownloadAheadChunks { get; init; } = Defaults.MaxDownloadAheadChunks; + + /// Чанков позади для хранения в RAM. + public int ChunksToKeepBehind { get; init; } = Defaults.ChunksToKeepBehind; + + #endregion + + #region Timing + + /// Интервал расширения буфера в мс. + public int BufferExtendIntervalMs { get; init; } = Defaults.BufferExtendIntervalMs; + + /// Максимальное время блокировки Read() в мс. + public int MaxReadBlockMs { get; init; } = Defaults.MaxReadBlockMs; + + /// Интервал опроса при ожидании данных. + public int ReadPollIntervalMs { get; init; } = Defaults.ReadPollIntervalMs; + + /// Порог сохранения ranges на диск. + public int SaveThresholdBytes { get; init; } = Defaults.SaveThresholdBytes; + + #endregion + + #region Concurrency + + /// Множитель для urgent-загрузок. + public int UrgentBoostMultiplier { get; init; } = Defaults.UrgentBoostMultiplier; + + /// Ёмкость канала записи на диск. + public int DiskChannelCapacity { get; init; } = Defaults.DiskChannelCapacity; + + #endregion + + /// + /// Значения по умолчанию (Medium профиль). + /// + public static class Defaults + { + public const int ChunkSizeBytes = 128 * 1024; // 128 KB + public const int ReadAheadChunks = 2; + public const int MaxRamChunks = 100; + + public const int MaxConcurrentDownloads = 3; + public const int DownloadTimeoutMs = 30_000; + public const int MaxRetries = 2; + public const int RetryDelayMs = 400; + + public const int VlcNetworkCachingMs = 1000; + + public const int InitialBufferSeconds = 2; + public const int InitialReadAheadChunks = 2; + public const int HeaderChunks = 3; + public const int TailChunks = 2; + + public const int MaxReadAheadFromPlayback = 4; + public const int MaxDownloadAheadChunks = 6; + public const int ChunksToKeepBehind = 2; + + public const int BufferExtendIntervalMs = 1000; + public const int MaxReadBlockMs = 30_000; + public const int ReadPollIntervalMs = 300; + public const int SaveThresholdBytes = 64 * 1024; + + public const int UrgentBoostMultiplier = 2; + public const int DiskChannelCapacity = 32; + } +} \ No newline at end of file diff --git a/Core/Models/TrackInfo.cs b/Core/Models/TrackInfo.cs index b6f793b..ace5874 100644 --- a/Core/Models/TrackInfo.cs +++ b/Core/Models/TrackInfo.cs @@ -1,4 +1,5 @@ -using System.Text.Json.Serialization; +using System.Runtime.CompilerServices; +using System.Text.Json.Serialization; using LMP.Core.Youtube.Search; using ReactiveUI; using ReactiveUI.Fody.Helpers; @@ -7,17 +8,79 @@ namespace LMP.Core.Models; /// /// Представляет музыкальный трек. -/// Является единственным источником правды для состояния трека. -/// Все свойства реактивные — UI обновляется автоматически. +/// string interning для ID, минимизированы аллокации. /// public sealed class TrackInfo : ReactiveObject, IBatchItem, ISearchResult { + private static readonly ConditionalWeakTable _idCache = new(); + #region Identity /// - /// Уникальный идентификатор (yt_ID для YouTube или local_ID для локальных). + /// Уникальный идентификатор с кэшированием для избежания дубликатов строк. + /// + public string Id + { + get; + set + { + if (field == value) return; + + if (!string.IsNullOrEmpty(value)) + { + if (value.StartsWith("yt_") || value.StartsWith("yt_pl_")) + { + field = value; + } + else + { + field = GetCachedPrefixedId("yt_", value); + } + } + else + { + field = value ?? string.Empty; + } + + this.RaisePropertyChanged(); + } + } = string.Empty; + + [MethodImpl(MethodImplOptions.AggressiveInlining)] + private static string GetCachedPrefixedId(string prefix, string rawId) + { + if (!_idCache.TryGetValue(rawId, out var cached)) + { + cached = string.Concat(prefix, rawId); + _idCache.AddOrUpdate(rawId, cached); + } + return cached; + } + + /// + /// Извлекает чистый YouTube ID без префикса (zero-alloc через Span). + /// + [MethodImpl(MethodImplOptions.AggressiveInlining)] + public ReadOnlySpan GetRawIdSpan() + { + var span = Id.AsSpan(); + if (span.StartsWith("yt_pl_".AsSpan())) + return span[6..]; + if (span.StartsWith("yt_".AsSpan())) + return span[3..]; + return span; + } + + /// + /// Получает чистый ID как строку (для async контекста). /// - public string Id { get; set; } = string.Empty; + [MethodImpl(MethodImplOptions.AggressiveInlining)] + public string GetRawId() + { + if (Id.StartsWith("yt_pl_")) return Id.Substring(6); + if (Id.StartsWith("yt_")) return Id.Substring(3); + return Id; + } #endregion @@ -34,7 +97,7 @@ public sealed class TrackInfo : ReactiveObject, IBatchItem, ISearchResult [Reactive] public string Author { get; set; } = string.Empty; /// - /// ID канала YouTube (для связи с исполнителем). + /// ID канала YouTube. /// [Reactive] public string? ChannelId { get; set; } @@ -59,130 +122,78 @@ public sealed class TrackInfo : ReactiveObject, IBatchItem, ISearchResult public bool IsOfficialArtist { get; set; } /// - /// Флаг музыкального контента (не видеоклип). + /// Флаг музыкального контента. /// public bool IsMusic { get; set; } - /// - /// Является ли трек явным видеоклипом. - /// [JsonIgnore] public bool IsExplicitVideoClip => IsOfficialArtist && !IsMusic; - /// - /// Есть ли обложка. - /// + [JsonIgnore] public bool HasThumbnail => !string.IsNullOrEmpty(ThumbnailUrl); #endregion #region User State - /// - /// Трек добавлен в "Любимое". - /// [Reactive] public bool IsLiked { get; set; } - - /// - /// Трек помечен как "Не нравится". - /// [Reactive] public bool IsDisliked { get; set; } - - /// - /// Трек сохранён в папку Downloads (явно скачан пользователем). - /// Файл НЕ удаляется при очистке кэша. - /// [Reactive] public bool IsDownloaded { get; set; } - - /// - /// Трек полностью закэширован (доступен офлайн через StreamCache). - /// Файл МОЖЕТ быть удалён при очистке кэша. - /// [Reactive] public bool IsCached { get; set; } - /// - /// Трек доступен для офлайн-воспроизведения. - /// True если скачан ИЛИ закэширован. - /// [JsonIgnore] public bool IsAvailableOffline => IsDownloaded || IsCached; - /// - /// Путь к локальному файлу (для скачанных треков). - /// [Reactive] public string? LocalPath { get; set; } #endregion #region Playlists - /// - /// ID плейлистов, в которых находится трек. - /// - public HashSet InPlaylists { get; set; } = []; + + public HashSet InPlaylists + { + get => field ??= new HashSet(StringComparer.Ordinal); + set; + } #endregion #region Format Preferences - /// - /// Предпочтительный контейнер (webm, mp4, m4a). - /// Сохраняется в БД. - /// [Reactive] public string? PreferredContainer { get; set; } - - /// - /// Предпочтительный битрейт (kbps). - /// Сохраняется в БД. - /// [Reactive] public int PreferredBitrate { get; set; } - /// - /// ID трека-источника для радио. - /// public string? RadioSeedId { get; set; } #endregion - #region Runtime Cache (не сохраняется) + #region Runtime Cache - /// - /// Временный контейнер для текущей сессии (ручной выбор качества). - /// [JsonIgnore] public string? TransientContainer { get; set; } - - /// - /// Временный битрейт для текущей сессии. - /// [JsonIgnore] public int TransientBitrate { get; set; } + [JsonIgnore] public long TransientSize { get; set; } - /// - /// Кэшированный URL потока (не сохраняется). - /// [JsonIgnore, Reactive] public string StreamUrl { get; set; } = string.Empty; - /// - /// Кэшированный кодек текущего потока. - /// - [JsonIgnore] public string CachedCodec { get; set; } = ""; + [JsonIgnore] public string CachedCodec { get; set; } = string.Empty; + [JsonIgnore] public int CachedBitrate { get; set; } + [JsonIgnore] public string CachedContainer { get; set; } = string.Empty; /// - /// Кэшированный битрейт текущего потока. + /// Трек доступен только через HLS (обычные стримы заблокированы). /// - [JsonIgnore] public int CachedBitrate { get; set; } + [JsonIgnore] public bool IsHlsOnly { get; set; } /// - /// Кэшированный контейнер текущего потока. + /// URL HLS манифеста (если IsHlsOnly = true). /// - [JsonIgnore] public string CachedContainer { get; set; } = ""; + [JsonIgnore] public string? HlsManifestUrl { get; set; } #endregion #region Constructors - /// - /// Конструктор по умолчанию для сериализатора. - /// public TrackInfo() { } #endregion @@ -191,27 +202,36 @@ public TrackInfo() { } /// /// Обновляет метаданные из свежего объекта. - /// НЕ перезаписывает пользовательское состояние (IsLiked, IsDownloaded, IsCached). /// - /// Объект с новыми данными (обычно из API). + [MethodImpl(MethodImplOptions.AggressiveInlining)] public void UpdateMetadata(TrackInfo fresh) { - if (!string.IsNullOrEmpty(fresh.Title)) Title = fresh.Title; - if (!string.IsNullOrEmpty(fresh.Author)) Author = fresh.Author; - if (!string.IsNullOrEmpty(fresh.Url)) Url = fresh.Url; - if (!string.IsNullOrEmpty(fresh.ThumbnailUrl)) ThumbnailUrl = fresh.ThumbnailUrl; - if (fresh.Duration.TotalSeconds > 0) Duration = fresh.Duration; - if (fresh.IsOfficialArtist) IsOfficialArtist = true; - if (fresh.IsMusic) IsMusic = true; - if (!string.IsNullOrEmpty(fresh.ChannelId)) ChannelId = fresh.ChannelId; + if (!string.IsNullOrEmpty(fresh.Title) && fresh.Title != Title) + Title = fresh.Title; + + if (!string.IsNullOrEmpty(fresh.Author) && fresh.Author != Author) + Author = fresh.Author; + + if (!string.IsNullOrEmpty(fresh.Url) && fresh.Url != Url) + Url = fresh.Url; + + if (!string.IsNullOrEmpty(fresh.ThumbnailUrl) && fresh.ThumbnailUrl != ThumbnailUrl) + ThumbnailUrl = fresh.ThumbnailUrl; + + if (fresh.Duration.TotalSeconds > 0 && fresh.Duration != Duration) + Duration = fresh.Duration; + + if (fresh.IsOfficialArtist && !IsOfficialArtist) + IsOfficialArtist = true; + + if (fresh.IsMusic && !IsMusic) + IsMusic = true; + + if (!string.IsNullOrEmpty(fresh.ChannelId) && fresh.ChannelId != ChannelId) + ChannelId = fresh.ChannelId; } - /// - /// Помечает трек как полностью закэшированный. - /// Трек доступен офлайн, но файл в кэше (не в Downloads). - /// - /// Контейнер файла (webm, mp4). - /// Битрейт в kbps. + [MethodImpl(MethodImplOptions.AggressiveInlining)] public void MarkAsCached(string? container = null, int bitrate = 0) { IsCached = true; @@ -219,13 +239,7 @@ public void MarkAsCached(string? container = null, int bitrate = 0) if (bitrate > 0) PreferredBitrate = bitrate; } - /// - /// Помечает трек как скачанный (сохранён в Downloads). - /// Также устанавливает IsCached = true. - /// - /// Путь к файлу в Downloads. - /// Контейнер файла. - /// Битрейт в kbps. + [MethodImpl(MethodImplOptions.AggressiveInlining)] public void MarkAsDownloaded(string localPath, string? container = null, int bitrate = 0) { IsDownloaded = true; @@ -235,10 +249,7 @@ public void MarkAsDownloaded(string localPath, string? container = null, int bit if (bitrate > 0) PreferredBitrate = bitrate; } - /// - /// Сбрасывает статус кэширования (при очистке кэша). - /// НЕ сбрасывает IsDownloaded. - /// + [MethodImpl(MethodImplOptions.AggressiveInlining)] public void ClearCacheStatus() { if (!IsDownloaded) diff --git a/Core/Services/AudioEngine.cs b/Core/Services/AudioEngine.cs index 16b8126..e1255b3 100644 --- a/Core/Services/AudioEngine.cs +++ b/Core/Services/AudioEngine.cs @@ -1,91 +1,97 @@ -using System.Diagnostics; -using System.Runtime.CompilerServices; +using System.Numerics; +using System.Runtime.InteropServices; using System.Threading.Channels; -using LibVLCSharp.Shared; +using LMP.Core.Audio; +using LMP.Core.Exceptions; using LMP.Core.Models; using LMP.Core.ViewModels; -using LMP.Core.Youtube; -using LMP.Core.Youtube.Utils; +using LMP.Core.Youtube.Exceptions; using ReactiveUI; using ReactiveUI.Fody.Helpers; namespace LMP.Core.Services; /// -/// High-performance audio playback engine. -/// Uses command queue pattern for thread-safe operations. +/// Центральный движок аудио воспроизведения. +/// Координирует AudioPlayer, очередь треков, громкость и UI события. /// +/// +/// Обработка ошибок (SOLID — Single Responsibility): +/// AudioEngine НЕ принимает решения о показе диалогов. Он только: +/// +/// Ловит исключения из AudioPlayer и YoutubeProvider +/// Генерирует событие с типизированным исключением +/// Логирует ошибки +/// +/// Решение о реакции принимает . +/// public sealed class AudioEngine : ViewModelBase, IDisposable { #region Constants - private const int MaxConsecutiveErrors = 3; - private const int ApiCooldownMs = 200; - private const int QualitySwitchTimeoutMs = 8000; private const int MaxHistorySize = 100; - private const int RefreshTimeoutMs = 60_000; - private const int CommandTimeoutMs = 5000; - private const int LockTimeoutMs = 3000; + private const int CommandQueueCapacity = 32; + private const int SeekDebounceMs = 100; + private const int VolumeSaveIntervalMs = 2000; + private const int SmoothVolumeUpdateIntervalMs = 16; - #endregion + /// + /// Базовый диапазон громкости (0-200 = 0-100% без boost). + /// + public const int VolumeNormalRange = 200; - #region Dependencies + /// + /// Максимальный gain (аппаратное ограничение для защиты). + /// + public const float MaxGain = 4.0f; - private readonly YoutubeProvider _youtube; - private readonly LibraryService _library; - private readonly StreamCacheManager _cacheManager; - private readonly HttpClient _httpClient; + /// + /// Целевой уровень для простой нормализации (peak). + /// + private const float NormalizationTargetPeak = 0.95f; #endregion - #region VLC Core + #region Dependencies - private LibVLC? _libVLC; - private MediaPlayer? _player; - private Media? _currentMedia; - private MemoryFirstCachingStream? _currentStream; + private readonly YoutubeProvider _youtube; + private readonly LibraryService _library; + private readonly AudioPlayer _player; #endregion #region Synchronization - private readonly SemaphoreSlim _playbackLock = new(1, 1); - private readonly SemaphoreSlim _apiLock = new(1, 1); - private readonly Channel> _commandQueue; + private readonly Channel> _commandQueue; + private readonly CancellationTokenSource _lifetimeCts = new(); + private readonly Lock _queueLock = new(); + private readonly Lock _volumeLock = new(); + private readonly Lock _seekLock = new(); - private CancellationTokenSource? _playbackCts; - private TaskCompletionSource? _playbackStartedTcs; private int _session; #endregion - #region State (consolidated) + #region Seek State - [Flags] - private enum StateFlags - { - None = 0, - Playing = 1 << 0, - Paused = 1 << 1, - Loading = 1 << 2, - Ready = 1 << 3, - Navigating = 1 << 4, - Disposed = 1 << 5, - SuppressAutoNext = 1 << 6 - } + private CancellationTokenSource? _seekDebounceCts; + private TimeSpan _pendingSeekPosition; + private bool _hasScheduledSeek; + + #endregion + + #region Volume State - private int _stateFlags; - private int _consecutiveErrors; - private long _cachedTimeMs; - private long _cachedLengthMs; private int _volumePercent; - private DateTime _lastApiCall; - private DateTime _lastVolumeChange; + private float _currentGain; + private bool _volumeInitialized; + private CancellationTokenSource? _smoothVolumeCts; + + #endregion - private string _activeCodec = ""; - private int _activeBitrate; + #region Playback State - private StreamingConfig _streamingConfig; + private float _normalizationFactor = 1.0f; #endregion @@ -93,22 +99,19 @@ private enum StateFlags private readonly List _queue = new(64); private readonly List _history = new(MaxHistorySize); - private readonly Lock _queueLock = new(); - private int _currentIndex = -1; - private IReadOnlyList? _queueSnapshot; - private int _queueVersion; + private int _currentIndex = -1; #endregion - #region Properties + #region Observable Properties [Reactive] public TrackInfo? CurrentTrack { get; private set; } + [Reactive] public AudioStreamInfo StreamInfo { get; private set; } = AudioStreamInfo.Empty; - // Теперь это реактивные свойства с уведомлениями - public bool IsPlaying => HasFlag(StateFlags.Playing); - public bool IsPaused => HasFlag(StateFlags.Paused); - public bool IsLoading => HasFlag(StateFlags.Loading); + public bool IsPlaying => _player.State == PlaybackState.Playing; + public bool IsPaused => _player.State == PlaybackState.Paused; + public bool IsLoading => _player.State is PlaybackState.Loading or PlaybackState.Buffering; public IReadOnlyList Queue { @@ -116,7 +119,7 @@ public IReadOnlyList Queue { lock (_queueLock) { - _queueSnapshot ??= _queue.ToArray(); + _queueSnapshot ??= [.. _queue]; return _queueSnapshot; } } @@ -126,19 +129,10 @@ public IReadOnlyList Queue public bool ShuffleEnabled { get; set; } public RepeatMode RepeatMode { get; set; } - public TimeSpan CurrentPosition => TimeSpan.FromMilliseconds(Volatile.Read(ref _cachedTimeMs)); - - public TimeSpan TotalDuration - { - get - { - var len = Volatile.Read(ref _cachedLengthMs); - return len > 0 ? TimeSpan.FromMilliseconds(len) : (CurrentTrack?.Duration ?? TimeSpan.Zero); - } - } - - public double BufferProgress => _currentStream?.DownloadProgress ?? 0; - public string VlcStateString => _player?.State.ToString() ?? "None"; + public TimeSpan CurrentPosition => _player.Position; + public TimeSpan TotalDuration => _player.Duration; + public double BufferProgress => _player.BufferProgress; + public bool IsFullyBuffered => _player.IsFullyBuffered; #endregion @@ -146,159 +140,246 @@ public TimeSpan TotalDuration public event Action? OnTrackChanged; public event Action? OnPlaybackStopped; - public event Action? OnError; public event Action? OnPositionChanged; - public event Action? OnMaxVolumeChanged; - public event Action? OnStreamInfoReady; + public event Action? OnSeekCompleted; public event Action? OnPlaybackStateChanged; public event Action? OnQueueChanged; - public event Action? OnCriticalError; - - // Событие для явного уведомления об изменении состояния загрузки public event Action? OnLoadingStateChanged; + public event Action? OnMaxVolumeChanged; + public event Action? OnStreamInfoChanged; + public event Action? OnBufferStateChanged; + + /// + /// Событие ошибки воспроизведения. + /// + /// + /// Типизированное исключение для обработки в . + /// Возможные типы: + /// + /// + /// + /// + /// + /// Другие + /// + /// + public event Action? OnErrorOccurred; + + /// + /// Legacy событие для совместимости — только строка сообщения. + /// + [Obsolete("Use OnErrorOccurred instead for typed exception handling")] + public event Action? OnError; #endregion #region Constructor - public AudioEngine(YoutubeProvider youtube, LibraryService library, StreamCacheManager cacheManager) + public AudioEngine(YoutubeProvider youtube, LibraryService library) { _youtube = youtube; _library = library; - _cacheManager = cacheManager; - - _httpClient = CreateHttpClient(); - // DropOldest вместо Wait - новые команды вытесняют старые - _commandQueue = Channel.CreateBounded>( - new BoundedChannelOptions(16) - { - SingleReader = true, - FullMode = BoundedChannelFullMode.DropOldest - }); + _player = new AudioPlayer(new AudioPlayerOptions + { + UrlRefreshCallback = RefreshUrlCallbackAsync, + PositionUpdateInterval = TimeSpan.FromMilliseconds(200), + MaxRetryAttempts = 3, + UseNullBackend = false + }); - ShuffleEnabled = library.Settings.ShuffleEnabled; - RepeatMode = library.Settings.RepeatMode; - _volumePercent = NormalizeVolume(library.Settings.Volume); - _streamingConfig = GetStreamingConfig(library.Settings.InternetProfile); + SubscribeToPlayerEvents(); + InitializeFromSettings(); - InitializeVLC(); + _commandQueue = Channel.CreateBounded>(new BoundedChannelOptions(CommandQueueCapacity) + { + SingleReader = true, + FullMode = BoundedChannelFullMode.DropOldest + }); _ = ProcessCommandsAsync(); _ = VolumeSaveLoopAsync(); - Log.Info($"[AudioEngine] Ready. Volume={_volumePercent}%, Profile={library.Settings.InternetProfile}"); + Log.Info($"[AudioEngine] Ready. Volume={_volumePercent}%"); } - private HttpClient CreateHttpClient() => new(new SocketsHttpHandler + private void SubscribeToPlayerEvents() { - PooledConnectionLifetime = TimeSpan.FromMinutes(15), - PooledConnectionIdleTimeout = TimeSpan.FromMinutes(2), - MaxConnectionsPerServer = 8, - ConnectTimeout = TimeSpan.FromSeconds(4), - EnableMultipleHttp2Connections = true - }) - { - Timeout = TimeSpan.FromMinutes(4), - DefaultRequestHeaders = + _player.Events.PositionChanged += pos => RaiseOnUI(() => OnPositionChanged?.Invoke(pos)); + _player.Events.StateChanged += HandlePlayerStateChanged; + _player.Events.TrackEnded += HandlePlayerTrackEnded; + _player.Events.StreamInfoChanged += HandleStreamInfoChanged; + _player.Events.BufferStateChanged += state => RaiseOnUI(() => OnBufferStateChanged?.Invoke(state)); + _player.Events.SeekCompleted += t => RaiseOnUI(() => OnSeekCompleted?.Invoke(t)); + + // Ошибки из AudioPlayer → пробрасываем в наше событие + _player.Events.ErrorOccurred += err => { - { "User-Agent", YoutubeClientUtils.UserAgent }, - { "Accept-Language", YoutubeHttpHandler.GetHl() }, - { "Accept", "*/*" }, - { "Origin", "https://www.youtube.com/" }, - { "Referer", "https://www.youtube.com/" } - } - }; + var exception = err.Exception ?? new Exception(err.Message); + RaiseError(exception); + }; + } - #endregion + private void InitializeFromSettings() + { + var settings = _library.Settings; - #region VLC Initialization + ShuffleEnabled = settings.ShuffleEnabled; + RepeatMode = settings.RepeatMode; - private void InitializeVLC() - { - LibVLCSharp.Shared.Core.Initialize(); - var cache = _streamingConfig.VlcNetworkCachingMs; - - _libVLC = new LibVLC( - "--no-video", "--vout=none", "--no-spu", "--no-osd", "--no-stats", - $"--network-caching={cache}", - $"--file-caching={cache}", - $"--live-caching={cache}", - "--http-reconnect", "--http-continuous", - "--audio-resampler=speex", "--aout=wasapi", - "--clock-jitter=0", "--clock-synchro=0" - ); - - _player = new MediaPlayer(_libVLC); - AttachPlayerEvents(_player); - ApplyVolume(); + _volumePercent = settings.Volume > 0 + ? Math.Clamp((int)settings.Volume, 0, settings.MaxVolumeLimit) + : 60; + + ApplyVolume(instant: true); } - private void AttachPlayerEvents(MediaPlayer player) + #endregion + + #region Internal Playback + + /// + /// Воспроизводит трек по текущему индексу в очереди. + /// + /// + /// Обработка ошибок: + /// Все исключения пробрасываются через . + /// Этот метод НЕ показывает диалоги и НЕ принимает решения о UI. + /// + private async Task PlayCurrentIndexAsync(int session) { - player.Playing += (_, _) => OnVlcPlaying(); - player.Paused += (_, _) => OnVlcPaused(); - player.Stopped += (_, _) => OnVlcStopped(); - player.EndReached += (_, _) => OnVlcEndReached(); - player.EncounteredError += (_, _) => OnVlcError(); - player.TimeChanged += (_, e) => + TrackInfo? track; + lock (_queueLock) { - Volatile.Write(ref _cachedTimeMs, e.Time); - RaiseOnUI(() => OnPositionChanged?.Invoke(TimeSpan.FromMilliseconds(e.Time))); - }; - player.LengthChanged += (_, e) => + if (_currentIndex < 0 || _currentIndex >= _queue.Count) return; + track = _queue[_currentIndex]; + } + + if (track == null) return; + + _normalizationFactor = 1.0f; + + // Останавливаем через StopAsync — ждём реальной остановки pipeline + await _player.StopAsync(); + + // Проверяем сессию после async stop + if (Volatile.Read(ref _session) != session) return; + + // Обновляем UI + RaiseOnUI(() => { - Volatile.Write(ref _cachedLengthMs, e.Length); - RaiseOnUI(() => this.RaisePropertyChanged(nameof(TotalDuration))); - }; + CurrentTrack = track; + StreamInfo = AudioStreamInfo.Empty; + OnTrackChanged?.Invoke(track); + OnPositionChanged?.Invoke(TimeSpan.Zero); + }); + + try + { + var (streamUrl, bitrateHint) = await ResolveStreamUrlAsync(track); + + if (Volatile.Read(ref _session) != session) return; + + await _player.PlayAsync(streamUrl, track.Id, bitrateHint, CancellationToken.None); + AddToHistory(track); + } + catch (OperationCanceledException) + { + // Отмена — не ошибка, просто выходим + Log.Debug("[AudioEngine] PlayCurrentIndex cancelled"); + } + catch (Exception ex) + { + // ВСЕ ИСКЛЮЧЕНИЯ → OnErrorOccurred + // Оркестратор решит что делать (диалог, toast, skip) + Log.Error($"[AudioEngine] Play error: {ex.GetType().Name}: {ex.Message}"); + RaiseError(ex); + } } - public async Task ReinitializeWithProfileAsync(InternetProfile profile) + /// + /// Резолвит URL стрима для трека. + /// + /// При rate limiting. + /// При недоступности стрима. + /// При требовании авторизации. + private async Task<(string Url, int Bitrate)> ResolveStreamUrlAsync(TrackInfo track) { - Log.Info($"[AudioEngine] Switching to profile: {profile}"); + string? streamUrl = track.StreamUrl; + int bitrateHint = track.TransientBitrate; - // Немедленно отменяем текущую загрузку - CancelCurrentPlayback(); + // ВСЕГДА проверяем кэш первым + var cached = AudioSourceFactory.FindAnyCachedTrack(track.Id); + if (cached != null) + { + Log.Debug($"[AudioEngine] Using cache: {cached.Value.Entry.Format}/{cached.Value.Entry.Bitrate}kbps"); + return ("", cached.Value.Entry.Bitrate); + } - await EnqueueCommandAsync(async () => + if (string.IsNullOrEmpty(streamUrl)) { - await CleanupMediaAsync(); + // Может выбросить BotDetectionException, StreamUnavailableException, LoginRequiredException + var streamInfo = await _youtube.RefreshStreamUrlAsync(track, false, CancellationToken.None); + + if (streamInfo == null) + throw new InvalidOperationException($"Failed to resolve stream URL for {track.Id}"); + + streamUrl = streamInfo.Value.Url; + if (bitrateHint <= 0) + bitrateHint = streamInfo.Value.Bitrate; + } + + return (streamUrl ?? "", bitrateHint); + } + + #endregion - _player?.Dispose(); - _player = null; - _libVLC?.Dispose(); + #region Error Handling - _streamingConfig = GetStreamingConfig(profile); - InitializeVLC(); + /// + /// Генерирует события ошибки. + /// Использует InvokeAsync для гарантированной доставки (не Post). + /// + private void RaiseError(Exception exception) + { + Log.Debug($"[AudioEngine] RaiseError: {exception.GetType().Name}"); - ClearState(); - RaiseOnUI(() => + // Для ошибок используем прямой вызов если мы на UI, + // иначе InvokeAsync (не Post!) для гарантированной доставки + if (Avalonia.Threading.Dispatcher.UIThread.CheckAccess()) + { + OnErrorOccurred?.Invoke(exception); + OnError?.Invoke(exception.Message); + } + else + { + // InvokeAsync гарантирует выполнение, Post — нет + Avalonia.Threading.Dispatcher.UIThread.InvokeAsync(() => { - OnTrackChanged?.Invoke(null); - OnPlaybackStopped?.Invoke(); + OnErrorOccurred?.Invoke(exception); + OnError?.Invoke(exception.Message); }); - }); + } } + #endregion #region Playback Control public Task PlayTrackAsync(TrackInfo track) { - if (track == null || HasFlag(StateFlags.Disposed)) return Task.CompletedTask; + if (track == null) return Task.CompletedTask; - // Немедленно отменяем текущую загрузку ДО постановки в очередь - var newSession = CancelCurrentPlayback(); + int session = Interlocked.Increment(ref _session); return EnqueueCommandAsync(async () => { - // Если сессия изменилась пока ждали очередь - команда устарела - if (_session != newSession) return; + if (Volatile.Read(ref _session) != session) return; lock (_queueLock) { - var idx = _queue.FindIndex(t => t.Id == track.Id); + int idx = _queue.FindIndex(t => t.Id == track.Id); if (idx >= 0) { _currentIndex = idx; @@ -314,20 +395,17 @@ public Task PlayTrackAsync(TrackInfo track) } RaiseOnUI(() => OnQueueChanged?.Invoke()); - await PlayCurrentIndexAsync(newSession); + await PlayCurrentIndexAsync(session); }); } public Task StartQueueAsync(IEnumerable tracks, TrackInfo startTrack) { - if (HasFlag(StateFlags.Disposed)) return Task.CompletedTask; - - // Немедленно отменяем текущую загрузку - var newSession = CancelCurrentPlayback(); + int session = Interlocked.Increment(ref _session); return EnqueueCommandAsync(async () => { - if (_session != newSession) return; + if (Volatile.Read(ref _session) != session) return; lock (_queueLock) { @@ -339,1010 +417,771 @@ public Task StartQueueAsync(IEnumerable tracks, TrackInfo startTrack) } RaiseOnUI(() => OnQueueChanged?.Invoke()); - await PlayCurrentIndexAsync(newSession); + await PlayCurrentIndexAsync(session); }); } public async Task SetPlaybackStateAsync(bool shouldPlay) { - if (HasFlag(StateFlags.Disposed) || _player == null) return; - - using var cts = new CancellationTokenSource(CommandTimeoutMs); - - await Task.Run(() => + if (shouldPlay) { - var state = _player?.State ?? VLCState.Error; - - if (shouldPlay) + if (_player.State == PlaybackState.Paused) { - if (state == VLCState.Paused) _player?.SetPause(false); - else if (state is VLCState.Stopped or VLCState.Ended) - { - var session = CancelCurrentPlayback(); - _ = EnqueueCommandAsync(() => PlayCurrentIndexAsync(session)); - } - else _player?.Play(); - - SetFlag(StateFlags.Playing, true); - SetFlag(StateFlags.Paused, false); + _player.Resume(); } - else + else if (_player.State == PlaybackState.Stopped && CurrentTrack != null) { - if (state is VLCState.Playing or VLCState.Buffering or VLCState.Opening) - _player?.Pause(); - - SetFlag(StateFlags.Playing, false); - SetFlag(StateFlags.Paused, true); + int session = Interlocked.Increment(ref _session); + await EnqueueCommandAsync(() => PlayCurrentIndexAsync(session)); } - }, cts.Token); - - NotifyPlaybackState(); - } - - public ValueTask SeekAsync(TimeSpan position) - { - if (_player == null || !HasFlag(StateFlags.Ready) || HasFlag(StateFlags.Disposed)) - return ValueTask.CompletedTask; - - var ms = (long)Math.Clamp(position.TotalMilliseconds, 0, TotalDuration.TotalMilliseconds); - Volatile.Write(ref _cachedTimeMs, ms); - - _ = Task.Run(() => { try { _player.Time = ms; } catch { } }); - - return ValueTask.CompletedTask; + } + else + { + _player.Pause(); + } } public void Stop() { - CancelCurrentPlayback(); + Interlocked.Increment(ref _session); + _player.Stop(); + _normalizationFactor = 1.0f; - _ = EnqueueCommandAsync(async () => + RaiseOnUI(() => { - await CleanupMediaAsync(); - ClearState(); - - RaiseOnUI(() => - { - OnTrackChanged?.Invoke(null); - OnPlaybackStopped?.Invoke(); - }); - NotifyPlaybackState(); + CurrentTrack = null; + StreamInfo = AudioStreamInfo.Empty; + OnTrackChanged?.Invoke(null); + OnPlaybackStopped?.Invoke(); }); } public Task PlayNextAsync() => NavigateAsync(forward: true, userInitiated: true); public Task PlayPreviousAsync() => NavigateAsync(forward: false, userInitiated: true); - /// - /// Централизованная отмена текущего воспроизведения - /// Возвращает новый session ID для проверки актуальности команды - /// - private int CancelCurrentPlayback() - { - SetFlag(StateFlags.SuppressAutoNext, true); - var newSession = Interlocked.Increment(ref _session); + #endregion - // Отменяем текущую операцию загрузки - try { _playbackCts?.Cancel(); } catch { } + #region Navigation - // Отменяем чтение из стрима (быстрый выход из блокирующих операций) - try { _currentStream?.CancelPendingReads(); } catch { } + private async Task NavigateAsync(bool forward, bool userInitiated) + { + int session = Interlocked.Increment(ref _session); + bool canMove; - return newSession; - } + lock (_queueLock) + { + canMove = forward ? TryMoveNext(userInitiated) : TryMovePrevious(); + } - #endregion + if (canMove) + { + await EnqueueCommandAsync(() => PlayCurrentIndexAsync(session)); + } + else if (!forward && _player.State != PlaybackState.Stopped) + { + await _player.SeekAsync(TimeSpan.Zero); + } + else + { + Stop(); + } + } - #region Volume + private bool TryMoveNext(bool userInitiated) + { + if (_queue.Count == 0) return false; + if (!userInitiated && RepeatMode == RepeatMode.RepeatOne) return true; + if (_currentIndex + 1 < _queue.Count) { _currentIndex++; return true; } + if (RepeatMode == RepeatMode.RepeatAll) { _currentIndex = 0; return true; } + return false; + } - public void SaveVolumeNow() + private bool TryMovePrevious() { - _library.UpdateSettings(s => s.Volume = _volumePercent); + if (_queue.Count == 0) return false; + if (CurrentPosition.TotalSeconds > 3) return false; + if (_currentIndex > 0) { _currentIndex--; return true; } + if (RepeatMode == RepeatMode.RepeatAll) { _currentIndex = _queue.Count - 1; return true; } + return false; } - public float GetVolume() => _volumePercent; + #endregion - public void SetVolumeInstant(float value) + #region Event Handlers + + private void HandlePlayerStateChanged(PlaybackState state) { - _volumePercent = Math.Clamp((int)Math.Round(value), 0, 500); - _lastVolumeChange = DateTime.UtcNow; - ApplyVolume(); + RaiseOnUI(() => + { + this.RaisePropertyChanged(nameof(IsPlaying)); + this.RaisePropertyChanged(nameof(IsPaused)); + this.RaisePropertyChanged(nameof(IsLoading)); + this.RaisePropertyChanged(nameof(TotalDuration)); + + OnPlaybackStateChanged?.Invoke(state == PlaybackState.Playing, state == PlaybackState.Paused); + OnLoadingStateChanged?.Invoke(state is PlaybackState.Loading or PlaybackState.Buffering); + }); } - public void ToggleMute() + private void HandlePlayerTrackEnded() { - if (_volumePercent > 0) - { - _library.UpdateSettings(s => s.LastVolume = _volumePercent); - SetVolumeInstant(0); - } - else + int session = Interlocked.Increment(ref _session); + + _ = Task.Run(async () => { - var restore = _library.Settings.LastVolume > 0 ? _library.Settings.LastVolume : 50; - SetVolumeInstant(restore); - } + bool canAdvance; + lock (_queueLock) { canAdvance = TryMoveNext(userInitiated: false); } + + if (canAdvance) + await EnqueueCommandAsync(() => PlayCurrentIndexAsync(session)); + else + Stop(); + }); } - public void UpdateAudioSettings() + private void HandleStreamInfoChanged(AudioStreamInfo info) { - RaiseOnUI(() => OnMaxVolumeChanged?.Invoke(_library.Settings.MaxVolumeLimit)); - ApplyVolume(); + RaiseOnUI(() => + { + StreamInfo = info; + OnStreamInfoChanged?.Invoke(info); + }); } - private void ApplyVolume() + private async ValueTask RefreshUrlCallbackAsync(string trackId, CancellationToken ct) { - if (_player == null || HasFlag(StateFlags.Disposed)) return; + var track = await _library.GetTrackAsync(trackId); + if (track == null) return null; try { - var gain = MathF.Pow(10f, Math.Clamp(_library.Settings.TargetGainDb, -20f, 20f) / 20f); - var final = Math.Clamp((int)Math.Round(_volumePercent * gain), 0, 500); - if (_player.Volume != final) _player.Volume = final; + var info = await _youtube.RefreshStreamUrlAsync(track, true, ct); + return info?.Url; } - catch { } - } - - private async Task VolumeSaveLoopAsync() - { - while (!HasFlag(StateFlags.Disposed)) + catch (Exception ex) { - await Task.Delay(2000); - if ((DateTime.UtcNow - _lastVolumeChange).TotalSeconds >= 1.5) - { - _library.UpdateSettings(s => s.Volume = _volumePercent); - } + Log.Warn($"[AudioEngine] URL refresh failed: {ex.Message}"); + RaiseError(ex); + return null; } } - private static int NormalizeVolume(float saved) => - Math.Clamp(saved is <= 1f and > 0 ? (int)(saved * 100) : (int)saved, 0, 500); - #endregion - #region Queue Management + #region Seek - public void Enqueue(TrackInfo track) + public void SeekDebounced(TimeSpan position) { - lock (_queueLock) + lock (_seekLock) { - if (_queue.Any(t => t.Id == track.Id)) return; - _queue.Add(track); - InvalidateQueueSnapshot(); - } + _pendingSeekPosition = position; - RaiseOnUI(() => OnQueueChanged?.Invoke()); + if (_hasScheduledSeek) return; - if (CurrentTrack == null && !IsPlaying && !IsLoading) - { - lock (_queueLock) _currentIndex = _queue.Count - 1; - var session = CancelCurrentPlayback(); - _ = EnqueueCommandAsync(() => PlayCurrentIndexAsync(session)); + _seekDebounceCts?.Cancel(); + _seekDebounceCts?.Dispose(); + _seekDebounceCts = new CancellationTokenSource(); + _hasScheduledSeek = true; + + _ = ExecuteDebouncedSeekAsync(_seekDebounceCts.Token); } } - public void EnqueueRange(IEnumerable tracks) + public ValueTask SeekAsync(TimeSpan position) { - int added = 0; - lock (_queueLock) + lock (_seekLock) { - var existing = _queue.Select(t => t.Id).ToHashSet(); - foreach (var track in tracks) - { - if (existing.Add(track.Id)) - { - _queue.Add(track); - added++; - } - } - if (added > 0) InvalidateQueueSnapshot(); + _seekDebounceCts?.Cancel(); + _hasScheduledSeek = false; } - if (added > 0) - { - RaiseOnUI(() => OnQueueChanged?.Invoke()); - if (CurrentTrack == null && !IsPlaying && !IsLoading) - _ = PlayNextAsync(); - } + return _player.SeekAsync(position); } - public void ClearQueue() + private async Task ExecuteDebouncedSeekAsync(CancellationToken ct) { - lock (_queueLock) + try { - var current = CurrentTrack; - _queue.Clear(); - _currentIndex = -1; + await Task.Delay(SeekDebounceMs, ct); - if (current != null) + TimeSpan pos; + lock (_seekLock) { - _queue.Add(current); - _currentIndex = 0; + pos = _pendingSeekPosition; + _hasScheduledSeek = false; } - InvalidateQueueSnapshot(); + + await _player.SeekAsync(pos, ct); + } + catch (OperationCanceledException) + { + lock (_seekLock) _hasScheduledSeek = false; + } + catch (Exception ex) + { + lock (_seekLock) _hasScheduledSeek = false; + Log.Warn($"[AudioEngine] Seek error: {ex.Message}"); } - RaiseOnUI(() => OnQueueChanged?.Invoke()); } - public void ShuffleQueue() - { - lock (_queueLock) - { - if (_queue.Count < 2) return; + #endregion - var current = _currentIndex >= 0 && _currentIndex < _queue.Count ? _queue[_currentIndex] : null; - Random.Shared.Shuffle(System.Runtime.InteropServices.CollectionsMarshal.AsSpan(_queue)); + #region Volume - if (current != null) - { - _currentIndex = _queue.IndexOf(current); - if (_currentIndex == -1) - { - _queue.Insert(0, current); - _currentIndex = 0; - } - } - InvalidateQueueSnapshot(); - } - RaiseOnUI(() => OnQueueChanged?.Invoke()); - } + public float GetVolume() => _volumePercent; - public void RemoveFromQueue(TrackInfo track) + public void SetVolumeInstant(float value) { - bool needStop = false; - lock (_queueLock) - { - var idx = _queue.FindIndex(t => t.Id == track.Id); - if (idx == -1) return; - - if (idx == _currentIndex) - { - needStop = _queue.Count == 1; - if (idx == _queue.Count - 1) _currentIndex--; - } - else if (idx < _currentIndex) _currentIndex--; + int maxVol = Math.Max(_library.Settings.MaxVolumeLimit, 100); - _queue.RemoveAt(idx); - InvalidateQueueSnapshot(); + lock (_volumeLock) + { + _volumePercent = Math.Clamp((int)Math.Round(value), 0, maxVol); } - RaiseOnUI(() => OnQueueChanged?.Invoke()); - if (needStop) Stop(); + ApplyVolume(instant: true); } - public void MoveQueueItem(int from, int to) + public void SaveVolumeNow() { - lock (_queueLock) - { - if (from < 0 || from >= _queue.Count || to < 0 || to >= _queue.Count || from == to) return; + _library.UpdateSettings(s => s.Volume = _volumePercent); + } - var item = _queue[from]; - _queue.RemoveAt(from); - _queue.Insert(to, item); + public void OnMaxVolumeLimitChanged(int newMaxVolume) + { + int currentMax = Math.Max(_library.Settings.MaxVolumeLimit, 100); - if (_currentIndex == from) _currentIndex = to; - else if (from < _currentIndex && to >= _currentIndex) _currentIndex--; - else if (from > _currentIndex && to <= _currentIndex) _currentIndex++; + // Не вызываем если значение не изменилось + if (currentMax == newMaxVolume) return; - InvalidateQueueSnapshot(); + lock (_volumeLock) + { + if (_volumePercent > newMaxVolume) + _volumePercent = newMaxVolume; } - RaiseOnUI(() => OnQueueChanged?.Invoke()); + + ApplyVolume(instant: true); + RaiseOnUI(() => OnMaxVolumeChanged?.Invoke(newMaxVolume)); } - [MethodImpl(MethodImplOptions.AggressiveInlining)] - private void InvalidateQueueSnapshot() + public void UpdateAudioSettings() { - _queueSnapshot = null; - _queueVersion++; + ApplyVolume(instant: false); + RaiseOnUI(() => OnMaxVolumeChanged?.Invoke(_library.Settings.MaxVolumeLimit)); } - #endregion + public void InitializeVolumeFromSettings() + { + if (_volumeInitialized) return; - #region Quality Switch + var settings = _library.Settings; + int maxVol = Math.Max(settings.MaxVolumeLimit, 100); - public async Task SwitchQualityAsync(string container, int targetBitrate = 0) + float savedVolume = settings.Volume; + _volumePercent = savedVolume switch + { + > 0 and <= 1.0f => (int)(savedVolume * 100), + > 1 => Math.Clamp((int)savedVolume, 0, maxVol), + _ => 50 + }; + + _volumeInitialized = true; + ApplyVolume(instant: true); + + Log.Info($"[AudioEngine] Volume initialized: {_volumePercent}"); + } + + private void ApplyVolume(bool instant) { - if (CurrentTrack == null) return; + var settings = _library.Settings; + var audioSettings = settings.Audio; + int maxVolume = Math.Max(settings.MaxVolumeLimit, 100); - var position = CurrentPosition; - var track = CurrentTrack; + float gain = ComputeGain(_volumePercent, maxVolume, audioSettings); - track.TransientContainer = container; - track.TransientBitrate = targetBitrate; - track.StreamUrl = ""; - track.CachedCodec = ""; - track.CachedBitrate = 0; - track.CachedContainer = ""; + // Применяем пользовательский gain из настроек + float targetGainDb = Math.Clamp(settings.TargetGainDb, -20f, 20f); + gain *= MathF.Pow(10f, targetGainDb / 20f); - if (_library.Settings.RememberTrackFormat) + // Применяем нормализацию если включена + if (audioSettings.NormalizationEnabled) + gain *= _normalizationFactor; + + gain = Math.Clamp(gain, 0f, MaxGain); + + if (instant || !audioSettings.SmoothVolumeEnabled) { - track.PreferredContainer = container; - track.PreferredBitrate = targetBitrate; - _ = _library.AddOrUpdateTrackAsync(track); + _currentGain = gain; + _player.Volume = gain; } + else + { + StartSmoothVolumeTransition(gain, audioSettings.SmoothVolumeDurationMs); + } + } - _playbackStartedTcs = new(TaskCreationOptions.RunContinuationsAsynchronously); - - var session = CancelCurrentPlayback(); - await EnqueueCommandAsync(() => PlayCurrentIndexAsync(session)); + private static float ComputeGain(int volumePercent, int maxVolume, AudioSettings audioSettings) + { + if (volumePercent <= 0) return 0f; - try + if (audioSettings.VolumeBoostEnabled) { - using var cts = new CancellationTokenSource(QualitySwitchTimeoutMs); - await _playbackStartedTcs.Task.WaitAsync(cts.Token); + // Boost режим: 0-200 = 0-100%, >200 = boost + if (volumePercent <= VolumeNormalRange) + { + float t = volumePercent / (float)VolumeNormalRange; + return ApplyVolumeCurve(t, audioSettings.VolumeCurve); + } + + float boostUnits = volumePercent - VolumeNormalRange; + return 1.0f + boostUnits / VolumeNormalRange; } - catch (OperationCanceledException) { } - finally { _playbackStartedTcs = null; } - if (position.TotalSeconds > 1) + // Точная настройка: 0-maxVolume = 0-100% + float normalized = (float)volumePercent / maxVolume; + return ApplyVolumeCurve(normalized, audioSettings.VolumeCurve); + } + + private static float ApplyVolumeCurve(float t, VolumeCurveType curve) + { + t = Math.Clamp(t, 0f, 1f); + + return curve switch { - await Task.Delay(200); - await SeekAsync(position); - } + VolumeCurveType.Linear => t, + VolumeCurveType.Quadratic => t * t, + VolumeCurveType.Logarithmic => MathF.Log2(1f + t), + VolumeCurveType.Cubic => t * t * t, + VolumeCurveType.SpeedOfLight => (MathF.Exp(t * 2f) - 1f) / (MathF.Exp(2f) - 1f), + _ => t * t + }; } - #endregion + private void StartSmoothVolumeTransition(float targetGain, int durationMs) + { + _smoothVolumeCts?.Cancel(); + _smoothVolumeCts?.Dispose(); + _smoothVolumeCts = new CancellationTokenSource(); - #region Stream Info + var ct = _smoothVolumeCts.Token; + float startGain = _currentGain; + var startTime = DateTime.UtcNow; + var duration = TimeSpan.FromMilliseconds(durationMs); - public (string Format, int Bitrate, bool IsReady) GetCurrentStreamInfo() + _ = Task.Run(async () => + { + try + { + while (!ct.IsCancellationRequested) + { + float progress = (float)(DateTime.UtcNow - startTime).TotalMilliseconds / durationMs; + + if (progress >= 1f) + { + _currentGain = targetGain; + _player.Volume = targetGain; + break; + } + + _currentGain = startGain + (targetGain - startGain) * progress; + _player.Volume = _currentGain; + + await Task.Delay(SmoothVolumeUpdateIntervalMs, ct); + } + } + catch (OperationCanceledException) { } + }, ct); + } + + private async Task VolumeSaveLoopAsync() { - if (!string.IsNullOrEmpty(_activeCodec)) - return (_activeCodec, _activeBitrate, true); + using var timer = new PeriodicTimer(TimeSpan.FromMilliseconds(VolumeSaveIntervalMs)); - if (CurrentTrack?.IsDownloaded == true && !string.IsNullOrEmpty(CurrentTrack.LocalPath)) + try { - var ext = Path.GetExtension(CurrentTrack.LocalPath)?.TrimStart('.').ToUpperInvariant() ?? "FILE"; - var bitrate = CurrentTrack.PreferredBitrate; - if (bitrate <= 0) + while (await timer.WaitForNextTickAsync(_lifetimeCts.Token)) { - var meta = StreamCacheManager.TryGetMetadata(CurrentTrack.Id); - if (meta != null) bitrate = meta.Bitrate; + _library.UpdateSettings(s => s.Volume = _volumePercent); } - return (ext, bitrate, true); } - - return ("", 0, false); + catch (OperationCanceledException) { } } - public long GetDownloadedBytes() => - _currentStream != null ? (long)(_currentStream.DownloadProgress / 100 * _currentStream.Length) : 0; - #endregion - #region Internal Playback + #region Normalization /// - /// ИСПРАВЛЕНО: Принимает session для проверки актуальности + /// Вычисляет коэффициент нормализации на основе пиковых значений PCM данных. + /// Вызывается из AudioPipeline после декодирования первых фреймов. /// - private async ValueTask PlayCurrentIndexAsync(int? expectedSession = null) + public void ComputeNormalization(ReadOnlySpan samples) { - if (HasFlag(StateFlags.Disposed)) return; - - TrackInfo? track; - - lock (_queueLock) + if (!_library.Settings.Audio.NormalizationEnabled || samples.IsEmpty) { - if (_currentIndex < 0 || _currentIndex >= _queue.Count) return; - track = _queue[_currentIndex]; + _normalizationFactor = 1.0f; + return; } - if (track == null) return; + float peakValue = FindPeakValue(samples); - // Если передан ожидаемый session - проверяем - int currentSession; - if (expectedSession.HasValue) + if (peakValue > 0.001f && peakValue > NormalizationTargetPeak) { - currentSession = expectedSession.Value; - if (_session != currentSession) return; // Команда устарела + _normalizationFactor = NormalizationTargetPeak / peakValue; + Log.Debug($"[AudioEngine] Normalization: peak={peakValue:F3}, factor={_normalizationFactor:F3}"); } else { - currentSession = Interlocked.Increment(ref _session); + _normalizationFactor = 1.0f; } - SetFlag(StateFlags.SuppressAutoNext, true); + // Переприменяем громкость с новым фактором + ApplyVolume(instant: true); + } - _playbackCts?.Cancel(); - _playbackCts = new CancellationTokenSource(); - var ct = _playbackCts.Token; + private static float FindPeakValue(ReadOnlySpan samples) + { + float peak = 0f; + int i = 0; - await CleanupMediaAsync(); + // SIMD поиск максимума + if (Vector.IsHardwareAccelerated && samples.Length >= Vector.Count) + { + var maxVec = Vector.Zero; + // var signMask = new Vector(-0f); // Для абсолютного значения - if (_session != currentSession || ct.IsCancellationRequested) return; + var vectors = MemoryMarshal.Cast>(samples); - ClearStreamInfo(); + foreach (var vec in vectors) + { + var abs = Vector.Abs(vec); + maxVec = Vector.Max(maxVec, abs); + } - // Используем метод с уведомлением - SetLoadingState(true); + for (int j = 0; j < Vector.Count; j++) + peak = MathF.Max(peak, maxVec[j]); - SetFlag(StateFlags.Ready, false); - CurrentTrack = track; + i = vectors.Length * Vector.Count; + } - RaiseOnUI(() => - { - OnTrackChanged?.Invoke(track); - OnQueueChanged?.Invoke(); - }); + // Скалярный хвост + for (; i < samples.Length; i++) + peak = MathF.Max(peak, MathF.Abs(samples[i])); - try - { - await LoadAndPlayAsync(track, currentSession, ct); - } - catch (OperationCanceledException) - { - Log.Debug($"[AudioEngine] Playback cancelled for session {currentSession}"); - } - catch (Exception ex) - { - Log.Error($"[AudioEngine] Playback error: {ex.Message}"); - RaiseOnUI(() => OnError?.Invoke(ex.Message)); - await HandlePlaybackErrorAsync(); - } - finally - { - // Только если это текущая сессия - if (_session == currentSession) - { - SetLoadingState(false); - } - } + return peak; } - private async ValueTask LoadAndPlayAsync(TrackInfo track, int session, CancellationToken ct) + /// + /// Применяет boost усиление через SIMD (вызывается из AudioCallback). + /// + public static void ApplyGainSimd(Span data, float gain) { - await Task.Run(async () => + if (MathF.Abs(gain - 1.0f) < 0.001f) return; + + int i = 0; + + if (Vector.IsHardwareAccelerated && data.Length >= Vector.Count) { - var sw = Stopwatch.StartNew(); - MemoryFirstCachingStream? cacheStream = null; + var vecGain = new Vector(gain); + var vecMin = new Vector(-1.0f); + var vecMax = new Vector(1.0f); - try - { - // Проверка отмены перед каждой долгой операцией - ct.ThrowIfCancellationRequested(); - if (_session != session) return; + var vectors = MemoryMarshal.Cast>(data); - // 1. Получаем ссылку на поток - var stream = await GetStreamAsync(track, forceRefresh: false, ct); + for (int j = 0; j < vectors.Length; j++) + vectors[j] = Vector.Min(Vector.Max(vectors[j] * vecGain, vecMin), vecMax); - // Проверка сразу после сетевого запроса - ct.ThrowIfCancellationRequested(); - if (_session != session) return; + i = vectors.Length * Vector.Count; + } - if (stream == null) throw new Exception("Failed to get stream URL"); + for (; i < data.Length; i++) + data[i] = Math.Clamp(data[i] * gain, -1f, 1f); + } - // 2. Настраиваем кэш - var hasOverride = track.TransientBitrate > 0 || !string.IsNullOrEmpty(track.TransientContainer); - var cacheId = hasOverride ? $"{track.Id}_{stream.Container}_{stream.Bitrate}" : track.Id; + #endregion - StreamCacheManager.UpdateStreamInfo(cacheId, stream.Codec, stream.Bitrate, stream.Container); - SetStreamInfo(stream.Codec, stream.Bitrate); + #region Quality Switching - Log.Info($"[AudioEngine] Stream: {stream.Codec}/{stream.Bitrate}kbps, cache={cacheId}"); + public async Task SwitchQualityAsync(string container, int bitrate) + { + if (CurrentTrack == null) return; - // Проверка перед следующим сетевым запросом - ct.ThrowIfCancellationRequested(); - if (_session != session) return; + var pos = CurrentPosition; + var track = CurrentTrack; - // 3. Получаем размер - var size = stream.Size; - if (size <= 0 && !hasOverride) - size = await GetContentLengthAsync(stream.Url, ct); + track.TransientContainer = container; + track.TransientBitrate = bitrate; - // Проверка после HEAD запроса - ct.ThrowIfCancellationRequested(); - if (_session != session) return; + if (_library.Settings.RememberTrackFormat) + { + track.PreferredContainer = container; + track.PreferredBitrate = bitrate; + } - // 4. Инициализируем кэш-стрим - if (size > 0) - { - cacheStream = new MemoryFirstCachingStream( - cacheId, stream.Url, size, _httpClient, _cacheManager, _streamingConfig, - urlRefresher: async token => - { - var s = await GetStreamAsync(track, forceRefresh: true, token); - return s?.Url; - }, - originalTrackId: track.Id); - - // Пребуферизация с проверкой отмены - if (!await cacheStream.PreBufferAsync(ct)) - { - cacheStream.Dispose(); - cacheStream = null; - } - } + Log.Info($"[AudioEngine] Switching quality to {container}/{bitrate}kbps at {pos.TotalSeconds:F1}s"); - // Финальная проверка перед запуском VLC - ct.ThrowIfCancellationRequested(); - if (_session != session) + int session = Interlocked.Increment(ref _session); + + await EnqueueCommandAsync(async () => + { + if (Volatile.Read(ref _session) != session) return; + + try + { + _player.Stop(); + track.StreamUrl = ""; + + var streamInfo = await _youtube.RefreshStreamUrlAsync(track, true, CancellationToken.None); + if (streamInfo == null) { - cacheStream?.Dispose(); + RaiseOnUI(() => OnError?.Invoke("Failed to switch quality")); return; } - // 5. Запускаем VLC - Media media = cacheStream != null - ? new Media(_libVLC!, new StreamMediaInput(cacheStream)) - : CreateUrlMedia(stream.Url); - - StartPlayback(media, cacheStream, track); - cacheStream = null; // Ownership transferred + await _player.PlayAsync(streamInfo.Value.Url, track.Id, bitrate, CancellationToken.None); - Log.Info($"[AudioEngine] Loaded in {sw.ElapsedMilliseconds}ms"); - } - catch (OperationCanceledException) - { - cacheStream?.Dispose(); - throw; + if (pos.TotalSeconds > 1) + { + await WaitForPlayerReadyAsync(TimeSpan.FromSeconds(2)); + await _player.SeekAsync(pos); + } } catch (Exception ex) { - Log.Error($"[AudioEngine] Load error: {ex.Message}"); - cacheStream?.Dispose(); - throw; + Log.Error($"[AudioEngine] Quality switch failed: {ex.Message}"); + RaiseOnUI(() => OnError?.Invoke("Failed to switch quality")); } - }, ct); - } - - private Media CreateUrlMedia(string url) - { - var media = new Media(_libVLC!, url, FromType.FromLocation); - media.AddOption($":http-user-agent={YoutubeClientUtils.UserAgent}"); - media.AddOption(":http-referrer=https://www.youtube.com/"); - return media; - } - - private void StartPlayback(Media media, MemoryFirstCachingStream? stream, TrackInfo track) - { - var (oldMedia, oldStream) = (_currentMedia, _currentStream); - (_currentMedia, _currentStream) = (media, stream); - - _ = Task.Run(() => - { - Thread.Sleep(100); - try { oldStream?.Dispose(); } catch { } - try { oldMedia?.Dispose(); } catch { } }); - - if (_player == null) return; - - _player.Media = media; - ApplyVolume(); - _player.Play(); - AddToHistory(track); } - private async Task NavigateAsync(bool forward, bool userInitiated) + private async Task WaitForPlayerReadyAsync(TimeSpan timeout) { - if (HasFlag(StateFlags.Disposed)) return; - - // Убрана проверка Navigating - разрешаем прерывать навигацию - // Немедленно отменяем текущую загрузку - var newSession = CancelCurrentPlayback(); + var deadline = DateTime.UtcNow + timeout; - SetFlag(StateFlags.Navigating, true); - try + while (DateTime.UtcNow < deadline) { - if (!forward && CurrentPosition.TotalSeconds > 3 && HasFlag(StateFlags.Ready)) - { - await EnqueueCommandAsync(() => PlayCurrentIndexAsync(newSession)); + if (_player.State is PlaybackState.Playing or PlaybackState.Paused) return; - } - bool canMove; - lock (_queueLock) - { - canMove = forward - ? TryMoveNext(userInitiated) - : TryMovePrevious(); - } - - if (canMove) - await EnqueueCommandAsync(() => PlayCurrentIndexAsync(newSession)); - else if (!forward && HasFlag(StateFlags.Ready) && _player != null) - _player.Time = 0; - else - Stop(); - } - finally - { - SetFlag(StateFlags.Navigating, false); + await Task.Delay(50); } } - private bool TryMoveNext(bool userInitiated) - { - if (_queue.Count == 0) return false; - if (!userInitiated && RepeatMode == RepeatMode.RepeatOne) return true; - - if (_currentIndex + 1 < _queue.Count) - { - _currentIndex++; - return true; - } - - if (RepeatMode == RepeatMode.RepeatAll) - { - _currentIndex = 0; - return true; - } + #endregion - return false; - } + #region Queue Management - private bool TryMovePrevious() + public void Enqueue(TrackInfo track) { - if (_queue.Count == 0) return false; - - if (_currentIndex > 0) + lock (_queueLock) { - _currentIndex--; - return true; + if (_queue.Any(t => t.Id == track.Id)) return; + _queue.Add(track); + InvalidateQueueSnapshot(); } - if (RepeatMode == RepeatMode.RepeatAll) + RaiseOnUI(() => OnQueueChanged?.Invoke()); + + if (CurrentTrack == null && !IsPlaying && !IsLoading) { - _currentIndex = _queue.Count - 1; - return true; + lock (_queueLock) _currentIndex = _queue.Count - 1; + int session = Interlocked.Increment(ref _session); + _ = EnqueueCommandAsync(() => PlayCurrentIndexAsync(session)); } - - return false; } - private async Task HandlePlaybackErrorAsync() + public void EnqueueRange(IEnumerable tracks) { - if (++_consecutiveErrors >= MaxConsecutiveErrors) + lock (_queueLock) { - Stop(); - RaiseOnUI(() => OnCriticalError?.Invoke( - SL["Player_Error_403_Title"] ?? "Error", - SL["Player_Error_403_Msg"] ?? "Too many errors")); - _consecutiveErrors = 0; - return; + _queue.AddRange(tracks); + InvalidateQueueSnapshot(); } - - await Task.Delay(1000); - await PlayNextAsync(); + RaiseOnUI(() => OnQueueChanged?.Invoke()); } - #endregion - - #region Stream Resolution - - private record StreamInfo(string Url, long Size, int Bitrate, string Codec, string Container); - - private async Task GetStreamAsync(TrackInfo track, bool forceRefresh, CancellationToken ct) + public void ShuffleQueue() { - var hasOverride = track.TransientBitrate > 0 || !string.IsNullOrEmpty(track.TransientContainer); - - // Check full cache - if (!hasOverride && !forceRefresh && _cacheManager.IsFullyCached(track.Id)) - { - var meta = StreamCacheManager.TryGetMetadata(track.Id); - if (meta is { ContentLength: > 0, Codec: not "" }) - { - Log.Debug($"[AudioEngine] Using cached stream: {track.Id}"); - if (!track.IsDownloaded && !_cacheManager.IsPromoted(track.Id)) - _cacheManager.TriggerCacheCompleted(track.Id, track.Id); - return new(meta.SourceUrl, meta.ContentLength, meta.Bitrate, meta.Codec, meta.Container); - } - } - - // Check if we need fresh URL - if (!forceRefresh && !hasOverride && !string.IsNullOrEmpty(track.StreamUrl) && !string.IsNullOrEmpty(track.CachedCodec)) - return new(track.StreamUrl, -1, track.CachedBitrate, track.CachedCodec, track.CachedContainer); - - // API request with throttling - return await WithApiLockAsync(async () => + lock (_queueLock) { - await ThrottleAsync(ct); - - using var cts = CancellationTokenSource.CreateLinkedTokenSource(ct); - cts.CancelAfter(RefreshTimeoutMs); - - var result = await _youtube.RefreshStreamUrlAsync(track, forceRefresh, cts.Token); - _lastApiCall = DateTime.UtcNow; + if (_queue.Count < 2) return; - return result.HasValue - ? new StreamInfo(result.Value.Url, result.Value.Size, result.Value.Bitrate, result.Value.Codec, result.Value.Container) + var current = _currentIndex >= 0 && _currentIndex < _queue.Count + ? _queue[_currentIndex] : null; - }, ct); - } - private async Task ThrottleAsync(CancellationToken ct) - { - var elapsed = (DateTime.UtcNow - _lastApiCall).TotalMilliseconds; - if (elapsed < ApiCooldownMs) - await Task.Delay(ApiCooldownMs - (int)elapsed, ct); - } + // Fisher-Yates shuffle + for (int n = _queue.Count - 1; n > 0; n--) + { + int k = Random.Shared.Next(n + 1); + (_queue[k], _queue[n]) = (_queue[n], _queue[k]); + } - private async Task GetContentLengthAsync(string url, CancellationToken ct) - { - try - { - using var cts = CancellationTokenSource.CreateLinkedTokenSource(ct); - cts.CancelAfter(1500); - using var req = new HttpRequestMessage(HttpMethod.Head, url); - using var resp = await _httpClient.SendAsync(req, cts.Token); - return resp.Content.Headers.ContentLength ?? -1; + // Текущий трек в начало + if (current != null) + { + int newIndex = _queue.IndexOf(current); + if (newIndex > 0) + { + _queue.RemoveAt(newIndex); + _queue.Insert(0, current); + } + _currentIndex = 0; + } + else + { + _currentIndex = -1; + } + + InvalidateQueueSnapshot(); } - catch { return -1; } + RaiseOnUI(() => OnQueueChanged?.Invoke()); } - #endregion - - #region VLC Events - - private void OnVlcPlaying() + public void ClearQueue() { - if (HasFlag(StateFlags.Disposed)) return; - - _consecutiveErrors = 0; - SetFlag(StateFlags.SuppressAutoNext, false); - SetFlag(StateFlags.Ready, true); - - // Используем метод с уведомлением - SetLoadingState(false); - - SetFlag(StateFlags.Playing, true); - SetFlag(StateFlags.Paused, false); - - _currentStream?.NotifyPaused(false); - - ApplyVolume(); - - _ = Task.Run(async () => + lock (_queueLock) { - await Task.Delay(250); - if (IsPlaying && !HasFlag(StateFlags.Disposed)) ApplyVolume(); - }); - - NotifyPlaybackState(); - _playbackStartedTcs?.TrySetResult(true); - } + var current = CurrentTrack; + _queue.Clear(); + _currentIndex = -1; - private void OnVlcPaused() - { - if (HasFlag(StateFlags.Disposed)) return; - SetFlag(StateFlags.Playing, false); - SetFlag(StateFlags.Paused, true); - _currentStream?.NotifyPaused(true); - NotifyPlaybackState(); - } + if (current != null) + { + _queue.Add(current); + _currentIndex = 0; + } - private void OnVlcStopped() - { - if (HasFlag(StateFlags.Disposed)) return; - SetFlag(StateFlags.Ready, false); - SetFlag(StateFlags.Playing, false); - SetFlag(StateFlags.Paused, false); - NotifyPlaybackState(); + InvalidateQueueSnapshot(); + } + RaiseOnUI(() => OnQueueChanged?.Invoke()); } - private void OnVlcEndReached() + public void RemoveFromQueue(TrackInfo track) { - if (HasFlag(StateFlags.Disposed | StateFlags.SuppressAutoNext)) return; - - SetFlag(StateFlags.Playing, false); - SetFlag(StateFlags.Paused, false); - SetFlag(StateFlags.Ready, false); - NotifyPlaybackState(); + bool needStop = false; - var session = Interlocked.Increment(ref _session); - _ = Task.Run(async () => + lock (_queueLock) { - if (_session != session || HasFlag(StateFlags.Disposed)) return; - - bool canAdvance; - lock (_queueLock) { canAdvance = TryMoveNext(userInitiated: false); } + int idx = _queue.FindIndex(t => t.Id == track.Id); + if (idx == -1) return; - if (canAdvance) - await EnqueueCommandAsync(() => PlayCurrentIndexAsync(session)); - else - Stop(); - }); - } + if (idx == _currentIndex) + { + needStop = _queue.Count == 1; + if (idx == _queue.Count - 1) _currentIndex--; + } + else if (idx < _currentIndex) + { + _currentIndex--; + } - private void OnVlcError() - { - SetLoadingState(false); - SetFlag(StateFlags.Playing, false); - SetFlag(StateFlags.Paused, false); - RaiseOnUI(() => OnError?.Invoke("VLC playback error")); - NotifyPlaybackState(); - } + _queue.RemoveAt(idx); + InvalidateQueueSnapshot(); + } - #endregion + RaiseOnUI(() => OnQueueChanged?.Invoke()); - #region Helpers + if (needStop) Stop(); + } - private async Task CleanupMediaAsync() + public void MoveQueueItem(int from, int to) { - var (media, stream) = (_currentMedia, _currentStream); - _currentMedia = null; - _currentStream = null; - - if (stream == null && media == null) return; - - try { stream?.CancelPendingReads(); } catch { } - - if (_player?.Media == media) _player!.Media = null; - if (_player?.State is not (VLCState.Stopped or VLCState.Error)) + lock (_queueLock) { - try { _player?.Stop(); } catch { } - } + if (from < 0 || from >= _queue.Count || to < 0 || to >= _queue.Count) + return; - _ = Task.Run(() => - { - Thread.Sleep(100); - try { stream?.Dispose(); } catch { } - try { media?.Dispose(); } catch { } - }); - } + var item = _queue[from]; + _queue.RemoveAt(from); + _queue.Insert(to, item); - private void ClearState() - { - ClearStreamInfo(); - CurrentTrack = null; - SetLoadingState(false); - SetFlag(StateFlags.Playing, false); - SetFlag(StateFlags.Paused, false); - SetFlag(StateFlags.Ready, false); - } + // Корректируем currentIndex + if (_currentIndex == from) + _currentIndex = to; + else if (from < _currentIndex && to >= _currentIndex) + _currentIndex--; + else if (from > _currentIndex && to <= _currentIndex) + _currentIndex++; - private void ClearStreamInfo() - { - _activeCodec = ""; - _activeBitrate = 0; - Volatile.Write(ref _cachedTimeMs, 0); - Volatile.Write(ref _cachedLengthMs, 0); + InvalidateQueueSnapshot(); + } + RaiseOnUI(() => OnQueueChanged?.Invoke()); } - private void SetStreamInfo(string codec, int bitrate) - { - _activeCodec = codec?.ToUpperInvariant() ?? ""; - _activeBitrate = bitrate; - RaiseOnUI(() => OnStreamInfoReady?.Invoke()); - } + #endregion - private void AddToHistory(TrackInfo track) - { - if (_history.LastOrDefault()?.Id == track.Id) return; - _history.Add(track); - if (_history.Count > MaxHistorySize) _history.RemoveAt(0); - } + #region Statistics - private void NotifyPlaybackState() => - RaiseOnUI(() => OnPlaybackStateChanged?.Invoke(IsPlaying, IsPaused)); + public long GetDownloadedBytes() => _player.GetDownloadedBytes(); + public IReadOnlyList<(double Start, double End)> GetBufferedRanges() => _player.GetBufferedRanges(); - /// - /// Метод для изменения состояния загрузки с уведомлением - /// - private void SetLoadingState(bool value) + public (string Format, int Bitrate, bool IsReady) GetCurrentStreamInfo() { - bool changed = HasFlag(StateFlags.Loading) != value; - SetFlag(StateFlags.Loading, value); - - if (changed) - { - RaiseOnUI(() => - { - this.RaisePropertyChanged(nameof(IsLoading)); - OnLoadingStateChanged?.Invoke(value); - }); - } + var info = StreamInfo; + return (info.Codec, info.Bitrate, info.IsValid); } #endregion - #region Command Queue + #region Helpers private async Task ProcessCommandsAsync() { - await foreach (var cmd in _commandQueue.Reader.ReadAllAsync()) + try { - if (HasFlag(StateFlags.Disposed)) break; - try { await cmd(); } - catch (OperationCanceledException) { /* Ожидаемая отмена */ } - catch (Exception ex) { Log.Error($"[AudioEngine] Command error: {ex.Message}"); } + await foreach (var cmd in _commandQueue.Reader.ReadAllAsync(_lifetimeCts.Token)) + { + try + { + await cmd(); + } + catch (OperationCanceledException) { } + catch (Exception ex) + { + Log.Error($"[AudioEngine] Command error: {ex.Message}"); + RaiseError(ex); + } + } } + catch (OperationCanceledException) { } } - private async Task EnqueueCommandAsync(Func command) + private Task EnqueueCommandAsync(Func command) { - if (HasFlag(StateFlags.Disposed)) return; - await _commandQueue.Writer.WriteAsync(command); + return _commandQueue.Writer.WriteAsync(command).AsTask(); } - private async Task WithApiLockAsync(Func> action, CancellationToken ct) where T : class + private static void RaiseOnUI(Action action) { - if (!await _apiLock.WaitAsync(LockTimeoutMs, ct)) return null; - try { return await action(); } - finally { _apiLock.Release(); } + if (Avalonia.Threading.Dispatcher.UIThread.CheckAccess()) + action(); + else + Avalonia.Threading.Dispatcher.UIThread.Post(action); } - #endregion - - #region State Flags + private void AddToHistory(TrackInfo track) + { + if (_history.Count > 0 && _history[^1].Id == track.Id) return; - [MethodImpl(MethodImplOptions.AggressiveInlining)] - private bool HasFlag(StateFlags flag) => - (Volatile.Read(ref _stateFlags) & (int)flag) != 0; + _history.Add(track); - [MethodImpl(MethodImplOptions.AggressiveInlining)] - private void SetFlag(StateFlags flag, bool value) - { - int current, desired; - do - { - current = Volatile.Read(ref _stateFlags); - desired = value ? current | (int)flag : current & ~(int)flag; - } while (Interlocked.CompareExchange(ref _stateFlags, desired, current) != current); + if (_history.Count > MaxHistorySize) + _history.RemoveAt(0); } - #endregion - - #region UI Helpers + private void InvalidateQueueSnapshot() => _queueSnapshot = null; - [MethodImpl(MethodImplOptions.AggressiveInlining)] - private static void RaiseOnUI(Action action) + public static Task ReinitializeWithProfileAsync(InternetProfile profile) { - if (Avalonia.Threading.Dispatcher.UIThread.CheckAccess()) - action(); - else - Avalonia.Threading.Dispatcher.UIThread.Post(action); + Log.Info($"[AudioEngine] Profile switched to {profile}"); + return Task.CompletedTask; } - #endregion - - #region Configuration - - private static StreamingConfig GetStreamingConfig(InternetProfile profile) => profile switch + public static void NotifyAppMinimized() { - InternetProfile.Low => new() - { - ChunkSize = 64 * 1024, - ReadAheadChunks = 2, - MaxConcurrentDownloads = 2, - VlcNetworkCachingMs = 4000, - MaxRamChunks = 150, - MaxBufferAheadChunks = 20, // ~20 сек буфер - DownloadFullTrack = false - }, - InternetProfile.Medium => new() - { - ChunkSize = 128 * 1024, - ReadAheadChunks = 4, - MaxConcurrentDownloads = 3, - VlcNetworkCachingMs = 2000, - MaxRamChunks = 100, - MaxBufferAheadChunks = 30, // ~30 сек буфер - DownloadFullTrack = false - }, - InternetProfile.High => new() - { - ChunkSize = 256 * 1024, - ReadAheadChunks = 6, - MaxConcurrentDownloads = 4, - VlcNetworkCachingMs = 1000, - MaxRamChunks = 80, - MaxBufferAheadChunks = 50, // ~50 сек буфер - DownloadFullTrack = false - }, - InternetProfile.Ultra => new() - { - ChunkSize = 512 * 1024, - ReadAheadChunks = 10, - MaxConcurrentDownloads = 6, - VlcNetworkCachingMs = 500, - MaxRamChunks = 60, - MaxBufferAheadChunks = 100, // Большой буфер - DownloadFullTrack = true // Качать полностью! - }, - _ => new() { ChunkSize = 128 * 1024, MaxRamChunks = 100, MaxBufferAheadChunks = 30 } - }; - - public void NotifyAppMinimized() => _currentStream?.ReleaseRamBuffers(); + GC.Collect(1, GCCollectionMode.Optimized, false); + } #endregion @@ -1350,23 +1189,21 @@ private static void RaiseOnUI(Action action) protected override void Dispose(bool disposing) { - if (HasFlag(StateFlags.Disposed)) return; - SetFlag(StateFlags.Disposed, true); - if (disposing) { - _library.UpdateSettings(s => s.Volume = _volumePercent); - _commandQueue.Writer.TryComplete(); - _playbackCts?.Cancel(); - - try { _currentStream?.Dispose(); } catch { } - try { _player?.Stop(); _player?.Dispose(); } catch { } - try { _libVLC?.Dispose(); } catch { } - try { _playbackLock.Dispose(); } catch { } - try { _apiLock.Dispose(); } catch { } - try { _httpClient.Dispose(); } catch { } - - Log.Info("[AudioEngine] Disposed"); + lock (_seekLock) + { + _seekDebounceCts?.Cancel(); + _seekDebounceCts?.Dispose(); + } + + _smoothVolumeCts?.Cancel(); + _smoothVolumeCts?.Dispose(); + + _lifetimeCts.Cancel(); + _lifetimeCts.Dispose(); + + _player.Dispose(); } base.Dispose(disposing); diff --git a/Core/Services/CookieAuthService.cs b/Core/Services/CookieAuthService.cs index 3f442cf..3908609 100644 --- a/Core/Services/CookieAuthService.cs +++ b/Core/Services/CookieAuthService.cs @@ -1,3 +1,5 @@ +using System.Collections.Frozen; +using System.Runtime.CompilerServices; using System.Text; using System.Text.Json; using System.Text.RegularExpressions; @@ -8,12 +10,30 @@ namespace LMP.Core.Services; public partial class CookieAuthService { private readonly Lock _lock = new(); - private readonly Dictionary _cookieMap = []; + private readonly Dictionary _cookieMap = new(32, StringComparer.Ordinal); private string _cachedHeaderString = ""; - // Файл для хранения метаданных профиля (имя, аватар) private readonly string _authDataPath = Path.Combine(AppContext.BaseDirectory, "auth.json"); + /// + /// Статический FrozenSet для resurrection cookies — O(1) проверка, zero alloc. + /// + private static readonly FrozenSet ResurrectionCookieNames = new[] + { + "SID", "HSID", "SSID", "APISID", "SAPISID", + "__Secure-1PSID", "__Secure-3PSID", + "__Secure-1PAPISID", "__Secure-3PAPISID", + "LOGIN_INFO", "PREF" + }.ToFrozenSet(StringComparer.OrdinalIgnoreCase); + + /// + /// Критические куки, при обновлении которых нужно сохранить файл. + /// + private static readonly FrozenSet CriticalCookieNames = new[] + { + "1PSIDTS", "SAPISID", "SIDCC" + }.ToFrozenSet(StringComparer.Ordinal); + public AuthState State { get; private set; } = new(); public bool IsAuthenticated @@ -56,9 +76,7 @@ private void LoadAuthData() var json = File.ReadAllText(_authDataPath); var loadedState = JsonSerializer.Deserialize(json); if (loadedState != null) - { State = loadedState; - } } } catch (Exception ex) @@ -94,13 +112,14 @@ private void UpdateStateAuthStatus() private void LoadCookies() { - if (File.Exists(G.File.Cookie)) + if (File.Exists(G.FilePath.Cookie)) { - var raw = File.ReadAllText(G.File.Cookie); + var raw = File.ReadAllText(G.FilePath.Cookie); ParseAndSetCookies(raw); } } + [MethodImpl(MethodImplOptions.AggressiveInlining)] public string GetCookieHeader() { lock (_lock) return _cachedHeaderString; @@ -108,31 +127,41 @@ public string GetCookieHeader() public string? GetCookieValue(string key) { - lock (_lock) return _cookieMap.TryGetValue(key, out var val) ? val : null; + lock (_lock) + return _cookieMap.TryGetValue(key, out var val) ? val : null; } + /// + /// Собирает resurrection cookie header. Использует FrozenSet для O(1) проверки. + /// public string GetResurrectionCookieHeader() { lock (_lock) { - var sb = new StringBuilder(); - - var allowList = new HashSet(StringComparer.OrdinalIgnoreCase) - { - "SID", "HSID", "SSID", "APISID", "SAPISID", - "__Secure-1PSID", "__Secure-3PSID", - "__Secure-1PAPISID", "__Secure-3PAPISID", - "LOGIN_INFO", "PREF" - }; - + // Предварительная оценка размера + int estimatedLen = 0; + int matchCount = 0; foreach (var kvp in _cookieMap) { - if (allowList.Contains(kvp.Key)) + if (ResurrectionCookieNames.Contains(kvp.Key)) { - if (sb.Length > 0) sb.Append("; "); - sb.Append($"{kvp.Key}={kvp.Value}"); + estimatedLen += kvp.Key.Length + kvp.Value.Length + 3; // "key=value; " + matchCount++; } } + + if (matchCount == 0) return ""; + + var sb = new StringBuilder(estimatedLen); + foreach (var kvp in _cookieMap) + { + if (!ResurrectionCookieNames.Contains(kvp.Key)) continue; + + if (sb.Length > 0) sb.Append("; "); + sb.Append(kvp.Key); + sb.Append('='); + sb.Append(kvp.Value); + } return sb.ToString(); } } @@ -141,10 +170,12 @@ public void SaveCookies(string cookies) { if (string.IsNullOrWhiteSpace(cookies)) return; - var clean = cookies.Replace("\r", "").Replace("\n", "").Trim().Trim('"'); + // Span-based очистка + var span = cookies.AsSpan().Trim().Trim('"'); + var clean = span.ToString().Replace("\r", "").Replace("\n", ""); clean = FindCookieTextRegex().Replace(clean, ""); - if (!clean.Contains("SAPISID")) + if (!clean.Contains("SAPISID", StringComparison.Ordinal)) { Log.Warn("[Auth] Attempt to save cookies without SAPISID. Ignoring."); return; @@ -166,38 +197,37 @@ public bool UpdateCookies(IEnumerable setCookieHeaders) { foreach (var header in setCookieHeaders) { - var parts = header.Split(';'); - if (parts.Length == 0) continue; + // Парсим первую пару key=value до ';' + var headerSpan = header.AsSpan(); + int semicolonIdx = headerSpan.IndexOf(';'); + var firstPart = semicolonIdx >= 0 ? headerSpan[..semicolonIdx] : headerSpan; + + int equalIdx = firstPart.IndexOf('='); + if (equalIdx <= 0) continue; - var firstPart = parts[0]; - var equalIndex = firstPart.IndexOf('='); + var key = firstPart[..equalIdx].Trim().ToString(); + var value = firstPart[(equalIdx + 1)..].Trim().ToString(); - if (equalIndex > 0) + if (string.IsNullOrEmpty(value) || + value.Equals("deleted", StringComparison.OrdinalIgnoreCase)) + continue; + + if (!_cookieMap.TryGetValue(key, out var existingVal) || existingVal != value) { - var key = firstPart[..equalIndex].Trim(); - var value = firstPart[(equalIndex + 1)..].Trim(); - - if (string.IsNullOrEmpty(value) || value.Equals("deleted", StringComparison.OrdinalIgnoreCase)) - continue; - - if (!_cookieMap.TryGetValue(key, out var existingVal) || existingVal != value) - { - _cookieMap[key] = value; - - if (key.Contains("1PSIDTS") || key.Contains("SAPISID") || key.Contains("SIDCC")) - { - criticalCookieUpdated = true; - } - - if (key == "__Secure-1PSIDTS") - { - _cookieMap["__Secure-3PSIDTS"] = value; - } - } + _cookieMap[key] = value; + + // Проверка через FrozenSet + Contains + if (!criticalCookieUpdated && IsCriticalCookie(key)) + criticalCookieUpdated = true; + + // Синхронизация PSIDTS + if (key == "__Secure-1PSIDTS") + _cookieMap["__Secure-3PSIDTS"] = value; } } - if (criticalCookieUpdated || _cookieMap.Count > 0) RebuildHeaderString(); + if (criticalCookieUpdated || _cookieMap.Count > 0) + RebuildHeaderString(); } if (criticalCookieUpdated) @@ -209,6 +239,21 @@ public bool UpdateCookies(IEnumerable setCookieHeaders) return criticalCookieUpdated; } + /// + /// Проверяет, является ли cookie критическим (нужно сохранение). + /// + [MethodImpl(MethodImplOptions.AggressiveInlining)] + private static bool IsCriticalCookie(string key) + { + // Проверяем по точному совпадению и по Contains для составных имён + foreach (var criticalName in CriticalCookieNames) + { + if (key.Contains(criticalName, StringComparison.Ordinal)) + return true; + } + return false; + } + public void Logout() { lock (_lock) @@ -216,44 +261,82 @@ public void Logout() _cookieMap.Clear(); _cachedHeaderString = ""; } - if (File.Exists(G.File.Cookie)) File.Delete(G.File.Cookie); - // Сброс данных профиля + if (File.Exists(G.FilePath.Cookie)) File.Delete(G.FilePath.Cookie); + State = new AuthState(); if (File.Exists(_authDataPath)) File.Delete(_authDataPath); OnAuthStateChanged?.Invoke(); } + /// + /// Парсит cookie строку без лишних аллокаций. + /// Использует Span для поиска разделителей. + /// private void ParseAndSetCookies(string raw) { lock (_lock) { _cookieMap.Clear(); - var parts = raw.Split(';'); - foreach (var part in parts) + + var remaining = raw.AsSpan(); + + while (remaining.Length > 0) { - var equalIndex = part.IndexOf('='); - if (equalIndex > 0) + // Ищем разделитель ';' + int semicolonIdx = remaining.IndexOf(';'); + ReadOnlySpan part; + + if (semicolonIdx >= 0) { - var key = part[..equalIndex].Trim(); - var value = part[(equalIndex + 1)..].Trim(); - if (!string.IsNullOrEmpty(key)) - _cookieMap[key] = value; + part = remaining[..semicolonIdx]; + remaining = remaining[(semicolonIdx + 1)..]; } + else + { + part = remaining; + remaining = []; + } + + // Ищем '=' + int equalIdx = part.IndexOf('='); + if (equalIdx <= 0) continue; + + var key = part[..equalIdx].Trim(); + var value = part[(equalIdx + 1)..].Trim(); + + if (key.Length > 0) + _cookieMap[key.ToString()] = value.ToString(); } + RebuildHeaderString(); } } + /// + /// Перестраивает строку cookie header с предварительным расчётом размера. + /// private void RebuildHeaderString() { - var sb = new StringBuilder(); + if (_cookieMap.Count == 0) + { + _cachedHeaderString = ""; + return; + } + + // Оценка размера: средний cookie ~30 символов + разделители + int estimatedLen = _cookieMap.Count * 40; + var sb = new StringBuilder(estimatedLen); + foreach (var kvp in _cookieMap) { if (sb.Length > 0) sb.Append("; "); - sb.Append($"{kvp.Key}={kvp.Value}"); + sb.Append(kvp.Key); + sb.Append('='); + sb.Append(kvp.Value); } + _cachedHeaderString = sb.ToString(); } @@ -264,7 +347,7 @@ private void SaveCookiesToFile() try { if (_cookieMap.ContainsKey("SAPISID")) - File.WriteAllText(G.File.Cookie, _cachedHeaderString); + File.WriteAllText(G.FilePath.Cookie, _cachedHeaderString); } catch (Exception ex) { diff --git a/Core/Services/DialogService.cs b/Core/Services/DialogService.cs index d04e666..49fd425 100644 --- a/Core/Services/DialogService.cs +++ b/Core/Services/DialogService.cs @@ -4,6 +4,8 @@ using Avalonia.Platform.Storage; using Avalonia.Threading; using LMP.Core.Models; +using LMP.Core.Youtube.Exceptions; +using LMP.Core.Youtube.Videos; using LMP.UI.Dialogs; using LMP.Core.Youtube.Search; @@ -16,18 +18,40 @@ public interface IDialogService Task SelectFolderAsync(string? startPath = null); Task ShowInfoAsync(string title, string message); Task ShowInfoAsync(string title, string message, string buttonText); - Task ShowInputAsync(string title, string prompt, string? watermark = null); - Task> ShowSyncSelectionAsync(IEnumerable items); Task> ShowMergeConflictResolutionDialogAsync(List playlistNames); Task ShowDeletePlaylistDialogAsync(Playlist playlist, bool isAuthenticated); + + /// + /// Показывает диалог ожидания bot detection cooldown. + /// + Task ShowBotDetectionCooldownAsync(TimeSpan waitTime); + + /// + /// Показывает диалог ошибки недоступности стрима. + /// + Task ShowStreamUnavailableAsync(StreamUnavailableException exception); + + /// + /// Показывает диалог общей ошибки воспроизведения. + /// + Task ShowPlaybackErrorAsync(string videoId, string errorMessage, Exception? exception = null); + + /// + /// Показывает диалог требования авторизации. + /// + Task ShowLoginRequiredAsync(LoginRequiredException exception); } public class DialogService : IDialogService { private static readonly LocalizationService L = LocalizationService.Instance; + // Синглтоны для диалогов, которые не должны дублироваться + private BotDetectionDialog? _activeBotDetectionDialog; + private readonly Lock _botDetectionLock = new(); + private static Window? GetMainWindow() { if (Application.Current?.ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop) @@ -55,7 +79,8 @@ public class DialogService : IDialogService } } - // --- REALIZATION OF NEW METHOD --- + #region Basic Dialogs + public async Task ShowInputAsync(string title, string prompt, string? watermark = null) { return await Dispatcher.UIThread.InvokeAsync(async () => @@ -107,7 +132,7 @@ public async Task ConfirmAsync(string title, string message) => if (window == null) return null; var storage = window.StorageProvider; IStorageFolder? suggestedStartLocation = null; - if (!string.IsNullOrEmpty(startPath) && System.IO.Directory.Exists(startPath)) + if (!string.IsNullOrEmpty(startPath) && Directory.Exists(startPath)) suggestedStartLocation = await storage.TryGetFolderFromPathAsync(startPath); var result = await storage.OpenFolderPickerAsync(new FolderPickerOpenOptions @@ -134,16 +159,20 @@ await Dispatcher.UIThread.InvokeAsync(async () => public async Task ShowInfoAsync(string title, string message) => await ShowInfoAsync(title, message, L["Common_OK"]); + #endregion + + #region Sync/Merge Dialogs + public async Task> ShowSyncSelectionAsync(IEnumerable items) { return await Dispatcher.UIThread.InvokeAsync(async () => { var window = GetMainWindow(); - if (window == null) return []; + if (window == null) return new List(); var vm = new SyncSelectionViewModel(items); var dialog = new SyncSelectionDialog { DataContext = vm }; var result = await ShowDialogSafeAsync>(dialog, window); - return result ?? []; + return result ?? new List(); }); } @@ -152,11 +181,13 @@ public async Task> ShowMergeConflictResolutionDialogAsync(Li return await Dispatcher.UIThread.InvokeAsync(async () => { var window = GetMainWindow(); - if (window == null) return [.. playlistNames.Select(n => new MergeDecision(n, MergeAction.Skip))]; + if (window == null) + return playlistNames.Select(n => new MergeDecision(n, MergeAction.Skip)).ToList(); + var vm = new MergeConflictResolutionViewModel(playlistNames); var dialog = new MergeConflictResolutionDialog { DataContext = vm }; var result = await ShowDialogSafeAsync>(dialog, window); - return result ?? [.. playlistNames.Select(n => new MergeDecision(n, MergeAction.Skip))]; + return result ?? playlistNames.Select(n => new MergeDecision(n, MergeAction.Skip)).ToList(); }); } @@ -171,4 +202,102 @@ public async Task> ShowMergeConflictResolutionDialogAsync(Li return await ShowDialogSafeAsync(dialog, window); }); } + + #endregion + + #region Bot Detection / Stream Errors + + public async Task ShowBotDetectionCooldownAsync(TimeSpan waitTime) + { + await Dispatcher.UIThread.InvokeAsync(async () => + { + var window = GetMainWindow(); + if (window == null) return; + + lock (_botDetectionLock) + { + // Если диалог уже открыт — обновляем его, не создаём новый + if (_activeBotDetectionDialog != null && _activeBotDetectionDialog.IsVisible) + { + // Обновляем таймер существующего диалога + _activeBotDetectionDialog.UpdateCountdown( + VideoController.GetRemainingCooldown(), + VideoController.CooldownDuration); + return; + } + + // Создаём новый диалог + _activeBotDetectionDialog = new BotDetectionDialog + { + DialogTitle = L["Dialog_BotDetection_Title"], + Message = L["Dialog_BotDetection_Message"], + Hint = L["Dialog_BotDetection_Hint"], + CloseButtonText = L["Common_OK"] + }; + } + + _activeBotDetectionDialog.StartCountdown(waitTime); + + try + { + await ShowDialogSafeAsync(_activeBotDetectionDialog, window); + } + finally + { + lock (_botDetectionLock) + { + _activeBotDetectionDialog = null; + } + } + }); + } + + public async Task ShowStreamUnavailableAsync(StreamUnavailableException exception) + { + await Dispatcher.UIThread.InvokeAsync(async () => + { + var window = GetMainWindow(); + if (window == null) return; + + var dialog = new StreamUnavailableDialog(); + dialog.ConfigureForException(exception); + + await ShowDialogSafeAsync(dialog, window); + }); + } + + public async Task ShowPlaybackErrorAsync(string videoId, string errorMessage, Exception? exception = null) + { + await Dispatcher.UIThread.InvokeAsync(async () => + { + var window = GetMainWindow(); + if (window == null) return; + + var dialog = new StreamUnavailableDialog(); + dialog.ConfigureForError(videoId, errorMessage, exception); + + await ShowDialogSafeAsync(dialog, window); + }); + } + + public async Task ShowLoginRequiredAsync(LoginRequiredException exception) + { + await Dispatcher.UIThread.InvokeAsync(async () => + { + var window = GetMainWindow(); + if (window == null) return; + + var L = LocalizationService.Instance; + var dialog = new InfoDialog + { + DialogTitle = L["Dialog_Login_Title"], + Message = L[exception.GetLocalizationKey()], + ButtonText = L["Common_OK"] + }; + + await ShowDialogSafeAsync(dialog, window); + }); + } + + #endregion } \ No newline at end of file diff --git a/Core/Services/ImageCacheService.cs b/Core/Services/ImageCacheService.cs index 68a1af3..cf8e006 100644 --- a/Core/Services/ImageCacheService.cs +++ b/Core/Services/ImageCacheService.cs @@ -555,7 +555,7 @@ private async Task DownloadAndProcessImageAsync(string url, string diskPath, Can /// /// Конвертирует изображение в WebP с ресайзом до MaxDiskImageSize. /// - private async Task ProcessAndSaveAsWebPAsync(Stream sourceStream, string diskPath, CancellationToken ct) + private static async Task ProcessAndSaveAsWebPAsync(Stream sourceStream, string diskPath, CancellationToken ct) { return await Task.Run(() => { diff --git a/Core/Services/LibraryService.cs b/Core/Services/LibraryService.cs index f77bde3..8d4a4e8 100644 --- a/Core/Services/LibraryService.cs +++ b/Core/Services/LibraryService.cs @@ -28,12 +28,9 @@ public sealed class LibraryService : IAsyncDisposable private readonly Subject _saveSettingsSignal = new(); private readonly IDisposable _saveSubscription; - private AppSettings _appSettings = new(); - public AppSettings Settings => _appSettings; + public AppSettings Settings { get; private set; } = new(); // Fake Account cache - private string? _fakeAccountName; - private string? _fakeAccountAvatarUrl; public event Action? OnInitialized; public event Action? OnDataChanged; @@ -61,7 +58,7 @@ public LibraryService( .ObserveOn(RxApp.TaskpoolScheduler) .Subscribe(async _ => { - try { await _settings.SetAsync("AppSettings", _appSettings); } + try { await _settings.SetAsync("AppSettings", Settings); } catch (Exception ex) { Log.Error($"[LibraryService] Settings save failed: {ex.Message}"); } }); } @@ -79,20 +76,23 @@ public async Task InitializeAsync(CancellationToken ct = default) await ctx.EnsureFtsTablesAsync(ct); // Migrate from JSON if exists - var jsonPath = G.File.Library; + var jsonPath = G.FilePath.Library; if (File.Exists(jsonPath)) { await MigrateFromJsonAsync(jsonPath, ct); } // Load settings - _appSettings = await _settings.GetOrDefaultAsync("AppSettings", new AppSettings(), ct); + Settings = await _settings.GetOrDefaultAsync("AppSettings", new AppSettings(), ct); // ИНИЦИАЛИЗИРУЕМ СТАТИКУ - YoutubeClientUtils.CurrentProfile = _appSettings.YoutubeClient; + YoutubeClientUtils.CurrentProfile = Settings.YoutubeClient; // Hydrate cache await _registry.HydrateAsync(ct); + // Подписываем registry на события кэша + _registry.SubscribeToCacheEvents(); + // Ensure liked playlist await EnsureLikedPlaylistAsync(ct); @@ -207,8 +207,8 @@ private async Task MigrateFromJsonAsync(string path, CancellationToken ct) } // Step 4: Migrate settings - _appSettings = MapLegacySettings(legacy); - await _settings.SetAsync("AppSettings", _appSettings, ct); + Settings = MapLegacySettings(legacy); + await _settings.SetAsync("AppSettings", Settings, ct); // Backup old file var backup = path + $".migrated.{DateTime.Now:yyyyMMddHHmmss}"; @@ -274,14 +274,21 @@ public async Task AddOrUpdateTrackAsync(TrackInfo track, CancellationToken ct = /// Full-text search in database. /// public async Task> SearchTracksAsync( - string query, int limit = 50, int offset = 0, CancellationToken ct = default) + string query, int limit = 50, int offset = 0, CancellationToken ct = default) { var tracks = await _tracks.SearchAsync(query, limit, offset, ct); + if (tracks.Count == 0) return tracks; + + // ОПТИМИЗАЦИЯ: Один SQL-запрос вместо N + var trackIds = tracks.Select(t => t.Id).ToList(); + var playlistsMap = await _playlists.GetPlaylistsForTracksAsync(trackIds, ct); + foreach (var t in tracks) { - t.InPlaylists = await _playlists.GetPlaylistsForTrackAsync(t.Id, ct); + t.InPlaylists = playlistsMap.TryGetValue(t.Id, out var pls) ? pls : []; _registry.RegisterOrUpdate(t); } + return tracks; } @@ -303,11 +310,17 @@ public async Task> GetAllTracksAsync( CancellationToken ct = default) { var tracks = await _tracks.GetAllAsync(limit, offset, ct); + if (tracks.Count == 0) return tracks; + + var trackIds = tracks.Select(t => t.Id).ToList(); + var playlistsMap = await _playlists.GetPlaylistsForTracksAsync(trackIds, ct); + foreach (var t in tracks) { - t.InPlaylists = await _playlists.GetPlaylistsForTrackAsync(t.Id, ct); + t.InPlaylists = playlistsMap.TryGetValue(t.Id, out var pls) ? pls : []; _registry.RegisterOrUpdate(t); } + return tracks; } @@ -320,11 +333,17 @@ public async Task> GetLocalTracksAsync( CancellationToken ct = default) { var tracks = await _tracks.GetLocalTracksAsync(limit, offset, ct); + if (tracks.Count == 0) return tracks; + + var trackIds = tracks.Select(t => t.Id).ToList(); + var playlistsMap = await _playlists.GetPlaylistsForTracksAsync(trackIds, ct); + foreach (var t in tracks) { - t.InPlaylists = await _playlists.GetPlaylistsForTrackAsync(t.Id, ct); + t.InPlaylists = playlistsMap.TryGetValue(t.Id, out var pls) ? pls : []; _registry.RegisterOrUpdate(t); } + return tracks; } @@ -349,17 +368,15 @@ public async Task GetLocalTrackCountAsync(CancellationToken ct = default) /// Uses FTS for fast full-text search. /// public async Task> SearchLocalTracksAsync( - string query, - int limit = 100, - CancellationToken ct = default) + string query, + int limit = 100, + CancellationToken ct = default) { if (string.IsNullOrWhiteSpace(query)) return await GetLocalTracksAsync(limit, 0, ct); - // Сначала получаем все локальные треки var allLocal = await _tracks.GetLocalTracksAsync(limit * 2, 0, ct); - // Фильтруем в памяти (для небольших коллекций это быстрее чем SQL LIKE) var filtered = allLocal .Where(t => t.Title.Contains(query, StringComparison.OrdinalIgnoreCase) || @@ -367,9 +384,14 @@ public async Task> SearchLocalTracksAsync( .Take(limit) .ToList(); + if (filtered.Count == 0) return filtered; + + var trackIds = filtered.Select(t => t.Id).ToList(); + var playlistsMap = await _playlists.GetPlaylistsForTracksAsync(trackIds, ct); + foreach (var t in filtered) { - t.InPlaylists = await _playlists.GetPlaylistsForTrackAsync(t.Id, ct); + t.InPlaylists = playlistsMap.TryGetValue(t.Id, out var pls) ? pls : []; _registry.RegisterOrUpdate(t); } @@ -449,14 +471,20 @@ public async Task ToggleDislikeAsync(TrackInfo track, CancellationToken ct = def } public async Task> GetLikedTracksAsync( - int limit = 100, int offset = 0, CancellationToken ct = default) + int limit = 100, int offset = 0, CancellationToken ct = default) { var tracks = await _tracks.GetLikedAsync(limit, offset, ct); + if (tracks.Count == 0) return tracks; + + var trackIds = tracks.Select(t => t.Id).ToList(); + var playlistsMap = await _playlists.GetPlaylistsForTracksAsync(trackIds, ct); + foreach (var t in tracks) { - t.InPlaylists = await _playlists.GetPlaylistsForTrackAsync(t.Id, ct); + t.InPlaylists = playlistsMap.TryGetValue(t.Id, out var pls) ? pls : []; _registry.RegisterOrUpdate(t); } + return tracks; } @@ -542,14 +570,19 @@ public async Task> GetPlaylistTracksAsync( var trackIds = await _playlists.GetTrackIdsAsync(playlistId, ct); var pageIds = trackIds.Skip(offset).Take(limit).ToList(); + if (pageIds.Count == 0) return []; + + // Preload загрузит все треки в кэш одним batch-запросом await _registry.PreloadAsync(pageIds, ct); + // Теперь берём из кэша синхронно var tracks = new List(pageIds.Count); foreach (var id in pageIds) { - var track = await _registry.GetOrLoadAsync(id, ct); + var track = _registry.TryGet(id); if (track != null) tracks.Add(track); } + return tracks; } @@ -642,13 +675,13 @@ public async Task IsTrackInPlaylistAsync(string trackId, string playlistId public string DownloadPath { - get => string.IsNullOrEmpty(_appSettings.DownloadPath) ? G.Folder.Downloads : _appSettings.DownloadPath; - set { _appSettings.DownloadPath = value; SaveSettings(); } + get => string.IsNullOrEmpty(Settings.DownloadPath) ? G.Folder.Downloads : Settings.DownloadPath; + set { Settings.DownloadPath = value; SaveSettings(); } } public void UpdateSettings(Action update) { - update(_appSettings); + update(Settings); SaveSettings(); } @@ -658,16 +691,16 @@ public void UpdateSettings(Action update) #region Fake Account - public bool HasFakeAccount => !string.IsNullOrEmpty(_appSettings.FakeAccountChannelUrl); - public string? FakeAccountUrl => _appSettings.FakeAccountChannelUrl; - public string? FakeAccountName => _fakeAccountName; - public string? FakeAccountAvatarUrl => _fakeAccountAvatarUrl; + public bool HasFakeAccount => !string.IsNullOrEmpty(Settings.FakeAccountChannelUrl); + public string? FakeAccountUrl => Settings.FakeAccountChannelUrl; + public string? FakeAccountName { get; private set; } + public string? FakeAccountAvatarUrl { get; private set; } public void SetFakeAccount(string url, string name, string avatar) { - _appSettings.FakeAccountChannelUrl = url; - _fakeAccountName = name; - _fakeAccountAvatarUrl = avatar; + Settings.FakeAccountChannelUrl = url; + FakeAccountName = name; + FakeAccountAvatarUrl = avatar; SaveSettings(); OnFakeAccountChanged?.Invoke(); OnDataChanged?.Invoke(); @@ -675,16 +708,16 @@ public void SetFakeAccount(string url, string name, string avatar) public void UpdateFakeAccountCache(string name, string avatar) { - _fakeAccountName = name; - _fakeAccountAvatarUrl = avatar; + FakeAccountName = name; + FakeAccountAvatarUrl = avatar; OnFakeAccountChanged?.Invoke(); } public void ClearFakeAccount() { - _appSettings.FakeAccountChannelUrl = null; - _fakeAccountName = null; - _fakeAccountAvatarUrl = null; + Settings.FakeAccountChannelUrl = null; + FakeAccountName = null; + FakeAccountAvatarUrl = null; SaveSettings(); OnFakeAccountChanged?.Invoke(); OnDataChanged?.Invoke(); @@ -706,8 +739,8 @@ private void OnLanguageChanged(object? _, string __) public async Task ResetAsync(CancellationToken ct = default) { _registry.Clear(); - _fakeAccountName = null; - _fakeAccountAvatarUrl = null; + FakeAccountName = null; + FakeAccountAvatarUrl = null; await using var ctx = await _dbFactory.CreateDbContextAsync(ct); await ctx.Database.EnsureDeletedAsync(ct); @@ -715,7 +748,7 @@ public async Task ResetAsync(CancellationToken ct = default) await ctx.OptimizeAsync(ct); await ctx.EnsureFtsTablesAsync(ct); - _appSettings = new AppSettings(); + Settings = new AppSettings(); await EnsureLikedPlaylistAsync(ct); OnDataChanged?.Invoke(); } @@ -728,7 +761,7 @@ public async ValueTask DisposeAsync() // Final flush await _registry.FlushAsync(); - await _settings.SetAsync("AppSettings", _appSettings); + await _settings.SetAsync("AppSettings", Settings); GC.SuppressFinalize(this); } diff --git a/Core/Services/LocalizationService.cs b/Core/Services/LocalizationService.cs index 7b8e877..19c440f 100644 --- a/Core/Services/LocalizationService.cs +++ b/Core/Services/LocalizationService.cs @@ -1,4 +1,5 @@ using Avalonia.Platform; +using LMP.Core.Models; using System.ComponentModel; using System.Globalization; using System.Text.Json; @@ -7,9 +8,8 @@ namespace LMP.Core.Services; public sealed class LocalizationService : INotifyPropertyChanged { - public readonly static LocalizationService Instance = new(); - - private string _currentLanguage = "en"; // Дефолт - английский + public static readonly LocalizationService Instance = new(); + private Dictionary _resources = []; private bool _isInitialized; @@ -22,70 +22,55 @@ public sealed class LocalizationService : INotifyPropertyChanged new() { Code = "ru", Name = "Русский" } ]; - /// - /// Публичное свойство для доступа к коду языка (hl) - /// - public string CurrentLanguageCode => _currentLanguage; + public string CurrentLanguageCode { get; private set; } = "en"; public string CurrentLanguage { - get => _currentLanguage; + get => CurrentLanguageCode; set { - if (_currentLanguage != value && AvailableLanguages.Any(l => l.Code == value)) + if (CurrentLanguageCode != value && AvailableLanguages.Any(l => l.Code == value)) { - Log.Info($"Changing language: {_currentLanguage} → {value}"); - _currentLanguage = value; + Log.Info($"Language change: {CurrentLanguageCode} → {value}"); + CurrentLanguageCode = value; LoadLanguage(value); + // ═══ Обновить bootstrap для быстрого старта ═══ + BootstrapSettings.Current.LanguageCode = value; + BootstrapSettings.Current.Save(); + PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(null)); LanguageChanged?.Invoke(this, value); } } } - // Приватный конструктор - НЕ загружаем язык автоматически! private LocalizationService() { - // Загружаем английский как fallback - LoadLanguage("en"); - Log.Info("Service created with default language: en"); + Log.Info("LocalizationService created (deferred)"); } - /// - /// Инициализация с сохранённым языком. Вызывать при старте приложения! - /// - public void Initialize(string? savedLanguageCode) + public void Initialize(string? langCode) { - if (_isInitialized) return; - - string langToUse = "en"; - - // 1. Приоритет: сохранённые настройки - if (!string.IsNullOrEmpty(savedLanguageCode) && - AvailableLanguages.Any(l => l.Code == savedLanguageCode)) + if (_isInitialized) { - langToUse = savedLanguageCode; - Log.Info($"Using saved language: {langToUse}"); + Log.Warn("LocalizationService already initialized"); + return; } - // 2. Fallback: системная локаль - else + + var langToUse = langCode ?? "en"; + + if (!AvailableLanguages.Any(l => l.Code == langToUse)) { - var sysLang = CultureInfo.CurrentUICulture.TwoLetterISOLanguageName; - if (AvailableLanguages.Any(l => l.Code == sysLang)) - { - langToUse = sysLang; - Log.Info($"Using system language: {langToUse}"); - } - else - { - Log.Info($"System language '{sysLang}' not supported, using: en"); - } + Log.Warn($"Unknown language '{langToUse}', falling back to 'en'"); + langToUse = "en"; } - _currentLanguage = langToUse; + CurrentLanguageCode = langToUse; LoadLanguage(langToUse); _isInitialized = true; + + Log.Info($"LocalizationService initialized: {langToUse}"); } private void LoadLanguage(string langCode) @@ -93,105 +78,79 @@ private void LoadLanguage(string langCode) try { var uri = new Uri($"avares://LMP/Assets/Localization/{langCode}.json"); - if (AssetLoader.Exists(uri)) + + if (!AssetLoader.Exists(uri)) { - using var stream = AssetLoader.Open(uri); - using var reader = new StreamReader(stream); - var json = reader.ReadToEnd(); - _resources = JsonSerializer.Deserialize>(json) - ?? []; - Log.Info($"Loaded {langCode}.json ({_resources.Count} keys)"); - } - else - { - Log.Info($"File not found: {uri}"); + Log.Error($"Localization file not found: {uri}"); if (langCode != "en") LoadLanguage("en"); + return; } + + using var stream = AssetLoader.Open(uri); + using var reader = new StreamReader(stream); + var json = reader.ReadToEnd(); + _resources = JsonSerializer.Deserialize>(json) ?? []; + + Log.Info($"✓ Loaded {langCode}.json ({_resources.Count} keys)"); } catch (Exception ex) { - Log.Info($"Error loading '{langCode}': {ex.Message}"); - if (langCode != "en") LoadLanguage("en"); + Log.Error($"Failed to load '{langCode}': {ex.Message}"); + + if (langCode == "en") + { + _resources = []; + Log.Warn("Using empty dictionary"); + } + else + { + LoadLanguage("en"); + } } } - /// - /// Индексатор для получения строки - /// public string this[string key] { get { - if (_resources.TryGetValue(key, out var value)) - return value; + if (!_isInitialized) + return $"[{key}]"; - Log.Info($"Missing key: {key}"); - return $"[{key}]"; + return _resources.TryGetValue(key, out var value) ? value : $"[{key}]"; } } - /// - /// Альтернативный метод получения строки - /// public string Get(string key, string? fallback = null) { - if (_resources.TryGetValue(key, out var value)) - return value; - return fallback ?? $"[{key}]"; + if (!_isInitialized) + return fallback ?? $"[{key}]"; + + return _resources.TryGetValue(key, out var value) ? value : fallback ?? $"[{key}]"; } - public string RawGet(string key) => _resources[key]; + public string RawGet(string key) => _resources.TryGetValue(key, out var v) ? v : key; - /// - /// Gets pluralized string based on count. - /// Looks for keys like "Key_0", "Key_1", "Key_2", "Key_5", "Key_other" - /// public string GetPlural(string key, int count) { - // Russian pluralization rules + if (!_isInitialized) return $"{count}"; + var absCount = Math.Abs(count); var lastTwo = absCount % 100; var lastOne = absCount % 10; string suffix; + if (count == 0) suffix = "_0"; + else if (lastTwo >= 11 && lastTwo <= 19) suffix = "_5"; + else if (lastOne == 1) suffix = "_1"; + else if (lastOne >= 2 && lastOne <= 4) suffix = "_2"; + else suffix = "_5"; - if (count == 0) - { - suffix = "_0"; - } - else if (lastTwo >= 11 && lastTwo <= 19) - { - // 11-19 always use "_5" form in Russian - suffix = "_5"; - } - else if (lastOne == 1) - { - suffix = "_1"; - } - else if (lastOne >= 2 && lastOne <= 4) - { - suffix = "_2"; - } - else - { - suffix = "_5"; - } - - // Try specific form first - var specificKey = key + suffix; - if (_resources.TryGetValue(specificKey, out var specific)) - { + if (_resources.TryGetValue(key + suffix, out var specific)) return string.Format(specific, count); - } - // Fall back to "_other" - var otherKey = key + "_other"; - if (_resources.TryGetValue(otherKey, out var other)) - { + if (_resources.TryGetValue(key + "_other", out var other)) return string.Format(other, count); - } - // Final fallback return $"{count}"; } } @@ -200,6 +159,5 @@ public class LanguageItem { public required string Code { get; set; } public required string Name { get; set; } - public override string ToString() => Name; -} +} \ No newline at end of file diff --git a/Core/Services/MemoryDiagnostics.cs b/Core/Services/MemoryDiagnostics.cs index e88cd4d..8ef3198 100644 --- a/Core/Services/MemoryDiagnostics.cs +++ b/Core/Services/MemoryDiagnostics.cs @@ -12,56 +12,68 @@ namespace LMP.Core.Services; public sealed class MemoryDiagnostics : IDisposable { #region Singleton - - private static MemoryDiagnostics? _instance; - public static MemoryDiagnostics Instance => _instance ??= new MemoryDiagnostics(); - + + public static MemoryDiagnostics Instance => field ??= new MemoryDiagnostics(); + #endregion #region Fields - + private readonly ConcurrentDictionary _counters = new(); private readonly ConcurrentDictionary _instanceCounts = new(); private readonly Timer _monitorTimer; - - private MemoryStats _lastStats = new(); private bool _disposed; - + #endregion #region Events - + public event Action? OnStatsUpdated; public event Action? OnMemoryWarning; - + #endregion #region Properties - - public MemoryStats CurrentStats => _lastStats; - + + public MemoryStats CurrentStats { get; private set; } = new(); + /// Порог предупреждения (MB) - public long WarningThresholdMb { get; set; } = 350; - + public long WarningThresholdMb { get; set; } = 330; + /// Критический порог (MB) - public long CriticalThresholdMb { get; set; } = 450; - + public long CriticalThresholdMb { get; set; } = 440; + /// Автоматическая очистка при критическом пороге public bool AutoCleanupEnabled { get; set; } = true; - + #endregion #region Constructor - + private MemoryDiagnostics() { _monitorTimer = new Timer(UpdateStats, null, TimeSpan.Zero, TimeSpan.FromSeconds(5)); } - + #endregion #region Tracking Methods - + + /// + /// Изменяет частоту мониторинга. + /// При сворачивании — реже (30с), при разворачивании — чаще (5с). + /// + public void SetMonitoringInterval(TimeSpan interval) + { + if (_disposed) return; + try + { + _monitorTimer.Change(interval, interval); + Log.Debug($"[MemoryDiag] Monitoring interval: {interval.TotalSeconds}s"); + } + catch (ObjectDisposedException) { } + } + /// /// Увеличивает счётчик байтов для категории. /// @@ -117,28 +129,28 @@ public static int GetInstanceCount(string category) { return Instance._instanceCounts.GetValueOrDefault(category, 0); } - + #endregion #region Monitoring - + private void UpdateStats(object? state) { if (_disposed) return; - + try { var process = Process.GetCurrentProcess(); var gcInfo = GC.GetGCMemoryInfo(); - _lastStats = new MemoryStats + CurrentStats = new MemoryStats { WorkingSetMb = process.WorkingSet64 / (1024 * 1024), PrivateMemoryMb = process.PrivateMemorySize64 / (1024 * 1024), GcTotalMemoryMb = GC.GetTotalMemory(false) / (1024 * 1024), GcHeapSizeMb = gcInfo.HeapSizeBytes / (1024 * 1024), - LohSizeMb = gcInfo.GenerationInfo.Length > 3 - ? gcInfo.GenerationInfo[3].SizeAfterBytes / (1024 * 1024) + LohSizeMb = gcInfo.GenerationInfo.Length > 3 + ? gcInfo.GenerationInfo[3].SizeAfterBytes / (1024 * 1024) : 0, Gen0Collections = GC.CollectionCount(0), Gen1Collections = GC.CollectionCount(1), @@ -146,23 +158,23 @@ private void UpdateStats(object? state) TrackedCategories = GetTrackedSummary() }; - OnStatsUpdated?.Invoke(_lastStats); + OnStatsUpdated?.Invoke(CurrentStats); // Проверяем пороги - if (_lastStats.WorkingSetMb > CriticalThresholdMb) + if (CurrentStats.WorkingSetMb > CriticalThresholdMb) { - var msg = $"CRITICAL: Memory {_lastStats.WorkingSetMb}MB > {CriticalThresholdMb}MB!"; + var msg = $"CRITICAL: Memory {CurrentStats.WorkingSetMb}MB > {CriticalThresholdMb}MB!"; OnMemoryWarning?.Invoke(msg); Log.Warn(msg); - + if (AutoCleanupEnabled) { ForceCleanup(); } } - else if (_lastStats.WorkingSetMb > WarningThresholdMb) + else if (CurrentStats.WorkingSetMb > WarningThresholdMb) { - var msg = $"WARNING: Memory {_lastStats.WorkingSetMb}MB > {WarningThresholdMb}MB"; + var msg = $"WARNING: Memory {CurrentStats.WorkingSetMb}MB > {WarningThresholdMb}MB"; OnMemoryWarning?.Invoke(msg); } } @@ -176,11 +188,11 @@ private Dictionary GetTrackedSummary() { return _counters.ToDictionary(kvp => kvp.Key, kvp => kvp.Value); } - + #endregion #region Reporting - + /// /// Генерирует полный отчёт о памяти. /// @@ -189,7 +201,7 @@ public string GetFullReport() var process = Process.GetCurrentProcess(); var gcInfo = GC.GetGCMemoryInfo(); var sb = new StringBuilder(); - + sb.AppendLine("╔══════════════════════════════════════════════════════════╗"); sb.AppendLine("║ MEMORY DIAGNOSTICS REPORT ║"); sb.AppendLine("╠══════════════════════════════════════════════════════════╣"); @@ -197,12 +209,12 @@ public string GetFullReport() sb.AppendLine($"║ Private Memory: {process.PrivateMemorySize64 / 1024 / 1024,6} MB ║"); sb.AppendLine($"║ GC Total: {GC.GetTotalMemory(false) / 1024 / 1024,6} MB ║"); sb.AppendLine($"║ GC Heap Size: {gcInfo.HeapSizeBytes / 1024 / 1024,6} MB ║"); - + if (gcInfo.GenerationInfo.Length > 3) { sb.AppendLine($"║ LOH Size: {gcInfo.GenerationInfo[3].SizeAfterBytes / 1024 / 1024,6} MB ║"); } - + sb.AppendLine($"║ Memory Load: {gcInfo.MemoryLoadBytes / 1024 / 1024,6} MB ║"); sb.AppendLine($"║ High Threshold: {gcInfo.HighMemoryLoadThresholdBytes / 1024 / 1024,6} MB ║"); sb.AppendLine("╠══════════════════════════════════════════════════════════╣"); @@ -220,11 +232,11 @@ public string GetFullReport() { var valueMb = kvp.Value / 1024.0 / 1024.0; var valueKb = kvp.Value / 1024.0; - - string formatted = valueMb >= 1 - ? $"{valueMb:F1} MB" + + string formatted = valueMb >= 1 + ? $"{valueMb:F1} MB" : $"{valueKb:F0} KB"; - + sb.AppendLine($"║ {kvp.Key,-30} {formatted,12} ║"); } @@ -233,7 +245,7 @@ public string GetFullReport() sb.AppendLine("╠──────────────────────────────────────────────────────────╣"); sb.AppendLine("║ INSTANCE COUNTS ║"); sb.AppendLine("╠──────────────────────────────────────────────────────────╣"); - + foreach (var kvp in _instanceCounts.Where(kvp => kvp.Value > 0).OrderByDescending(kvp => kvp.Value)) { sb.AppendLine($"║ {kvp.Key,-30} {kvp.Value,12} ║"); @@ -249,7 +261,7 @@ public string GetFullReport() /// public string GetShortStatus() { - return $"RAM: {_lastStats.WorkingSetMb}MB | GC: {_lastStats.GcTotalMemoryMb}MB | Gen0/1/2: {_lastStats.Gen0Collections}/{_lastStats.Gen1Collections}/{_lastStats.Gen2Collections}"; + return $"RAM: {CurrentStats.WorkingSetMb}MB | GC: {CurrentStats.GcTotalMemoryMb}MB | Gen0/1/2: {CurrentStats.Gen0Collections}/{CurrentStats.Gen1Collections}/{CurrentStats.Gen2Collections}"; } /// @@ -259,31 +271,31 @@ public static void LogReport() { Log.Info(Instance.GetFullReport()); } - + #endregion #region Cleanup - + /// /// Принудительная очистка памяти. /// public static void ForceCleanup() { Log.Info("[MemoryDiagnostics] Forcing memory cleanup..."); - + var before = GC.GetTotalMemory(false); - + // Компактификация LOH GCSettings.LargeObjectHeapCompactionMode = GCLargeObjectHeapCompactionMode.CompactOnce; - + // Агрессивная сборка мусора GC.Collect(2, GCCollectionMode.Aggressive, blocking: true, compacting: true); GC.WaitForPendingFinalizers(); GC.Collect(2, GCCollectionMode.Aggressive, blocking: true, compacting: true); - + var after = GC.GetTotalMemory(true); var freed = (before - after) / 1024 / 1024; - + Log.Info($"[MemoryDiagnostics] Cleanup complete. Freed ~{freed}MB. Current: {after / 1024 / 1024}MB"); } @@ -294,21 +306,21 @@ public static void SoftCleanup() { GC.Collect(1, GCCollectionMode.Optimized, blocking: false); } - + #endregion #region IDisposable - + public void Dispose() { if (_disposed) return; _disposed = true; - + _monitorTimer.Dispose(); _counters.Clear(); _instanceCounts.Clear(); } - + #endregion } diff --git a/Core/Services/MemoryFirstCachingStream.cs b/Core/Services/MemoryFirstCachingStream.cs deleted file mode 100644 index 6aa2e92..0000000 --- a/Core/Services/MemoryFirstCachingStream.cs +++ /dev/null @@ -1,848 +0,0 @@ -using System.Buffers; -using System.Collections.Concurrent; -using System.Diagnostics; -using System.Net; -using System.Net.Http.Headers; -using System.Runtime.CompilerServices; -using System.Threading.Channels; -using LMP.Core.Models; - -namespace LMP.Core.Services; - -public sealed class MemoryFirstCachingStream : Stream -{ - #region Constants - - private const int MaxFileOpenRetries = 10; - private const int FileOpenRetryDelayMs = 100; - private const int DiskSaveThresholdBytes = 128 * 1024; - - #endregion - - #region Configuration - - private readonly int _chunkSize; - private readonly int _readAheadChunks; - private readonly int _maxConcurrentDownloads; - private readonly int _maxRamChunks; - private readonly int _downloadTimeoutMs; - - // Максимальный буфер вперёд (в чанках) - private readonly int _maxBufferAhead; - - #endregion - - #region Identity - - private readonly string _cacheId; - private readonly string _originalTrackId; - private string _url; - private readonly long _contentLength; - private readonly string _cachePath; - private readonly int _totalChunks; - - #endregion - - #region Dependencies - - private readonly HttpClient _http; - private readonly StreamCacheManager _cacheManager; - private readonly Func>? _urlRefresher; - - #endregion - - #region State - - private readonly ConcurrentDictionary _chunks = new(); - private readonly ConcurrentDictionary _pendingDownloads = new(); - private readonly RangeMap _diskRanges; - - private long _position; - private long _bytesDownloaded; - private volatile bool _downloadComplete; - private volatile bool _disposed; - private volatile bool _disposing; - - // Флаг паузы и режим полного скачивания - private volatile bool _isPaused; - private volatile bool _downloadFullTrack; - - #endregion - - #region Synchronization - - private readonly SemaphoreSlim _downloadSemaphore; - private readonly SemaphoreSlim _fileSemaphore = new(1, 1); - private readonly SemaphoreSlim _refreshLock = new(1, 1); - private readonly Lock _queueLock = new(); - - private readonly PriorityQueue _downloadQueue = new(); - private readonly HashSet _queuedChunks = []; - - private readonly Channel<(long Pos, byte[] Data, int Len)> _diskChannel; - private readonly ManualResetEventSlim _dataAvailable = new(false); - private readonly CancellationTokenSource _disposeCts = new(); - private readonly CancellationTokenSource _downloadCts; - - #endregion - - #region Tasks - - private readonly Task _diskWriterTask; - private Task? _downloadLoop; - private FileStream? _cacheFile; - - #endregion - - #region Stream Properties - - public override bool CanRead => !_disposed; - public override bool CanSeek => !_disposed; - public override bool CanWrite => false; - public override long Length => _contentLength; - - public override long Position - { - get => Volatile.Read(ref _position); - set => Seek(value, SeekOrigin.Begin); - } - - public double DownloadProgress - { - get - { - if (_contentLength <= 0) return 0; - return Math.Min((double)Volatile.Read(ref _bytesDownloaded) / _contentLength * 100, 100); - } - } - - public bool IsFullyDownloaded => _downloadComplete; - - #endregion - - #region Constructor - - public MemoryFirstCachingStream( - string cacheId, - string url, - long contentLength, - HttpClient http, - StreamCacheManager cacheManager, - StreamingConfig config, - Func>? urlRefresher = null, - string? originalTrackId = null) - { - _cacheId = cacheId; - _originalTrackId = originalTrackId ?? cacheId; - _url = url; - _contentLength = contentLength; - _http = http; - _cacheManager = cacheManager; - _urlRefresher = urlRefresher; - - // Config - _chunkSize = config.ChunkSize; - _readAheadChunks = config.ReadAheadChunks; - _maxConcurrentDownloads = config.MaxConcurrentDownloads; - _maxRamChunks = config.MaxRamChunks > 0 ? config.MaxRamChunks : 50; - _downloadTimeoutMs = config.DownloadTimeoutMs; - - // Ограничение буфера (по умолчанию 30 секунд при 128kbps ≈ 30 чанков) - _maxBufferAhead = config.MaxBufferAheadChunks > 0 ? config.MaxBufferAheadChunks : 30; - _downloadFullTrack = config.DownloadFullTrack; - - // Derived - _cachePath = StreamCacheManager.GetCachePath(_cacheId); - _downloadCts = new CancellationTokenSource(); - _downloadSemaphore = new SemaphoreSlim(_maxConcurrentDownloads); - _totalChunks = (int)((_contentLength + _chunkSize - 1) / _chunkSize); - - // Metadata - var meta = StreamCacheManager.TryGetMetadata(cacheId) - ?? StreamCacheManager.LoadOrCreateMetadata(cacheId, url, contentLength); - - _diskRanges = RangeMap.Deserialize(meta.RangesJson); - _bytesDownloaded = _diskRanges.DownloadedBytes; - - // Already complete? - if (_diskRanges.IsFullyDownloaded(_contentLength)) - { - _downloadComplete = true; - _cacheManager.TriggerCacheCompleted(_cacheId, _originalTrackId); - Log.Info($"[CacheStream] {_cacheId} already complete"); - } - - // File - _cacheFile = OpenCacheFile(_cachePath); - if (_cacheFile != null && _cacheFile.Length < _contentLength) - _cacheFile.SetLength(_contentLength); - - // Disk writer channel - _diskChannel = Channel.CreateBounded<(long, byte[], int)>( - new BoundedChannelOptions(64) { FullMode = BoundedChannelFullMode.Wait, SingleReader = true }); - _diskWriterTask = Task.Run(DiskWriterLoopAsync); - - // Diagnostics - MemoryDiagnostics.TrackInstance("Stream.Active"); - MemoryDiagnostics.TrackBytes("Stream.TotalSize", _contentLength); - - Log.Info($"[CacheStream] Opened {_cacheId}: {contentLength / 1024 / 1024}MB, maxAhead={_maxBufferAhead} chunks"); - } - - #endregion - - #region Public API - - public async ValueTask PreBufferAsync(CancellationToken ct) - { - if (_disposed || _disposing) return false; - - try - { - using var linked = CancellationTokenSource.CreateLinkedTokenSource(ct, _downloadCts.Token, _disposeCts.Token); - var token = linked.Token; - - _downloadLoop ??= Task.Run(() => DownloadLoopAsync(token), token); - - if (HasChunk(0)) return true; - - EnqueueUrgent(0); - - var sw = Stopwatch.StartNew(); - while (!HasChunk(0)) - { - if (token.IsCancellationRequested) return false; - if (!_dataAvailable.Wait(200, token)) - { - if (sw.ElapsedMilliseconds > _downloadTimeoutMs) return false; - } - if (!HasChunk(0)) _dataAvailable.Reset(); - } - return true; - } - catch { return false; } - } - - public void CancelPendingReads() - { - try { _disposeCts.Cancel(); } catch { } - } - - /// - /// Уведомление о паузе воспроизведения - /// - public void NotifyPaused(bool paused) - { - _isPaused = paused; - if (paused) - { - Log.Debug($"[CacheStream] Paused, stopping background download"); - } - } - - /// - /// Включить полное скачивание (для "скачать трек") - /// - public void EnableFullDownload() - { - _downloadFullTrack = true; - // Добавляем все оставшиеся чанки в очередь - lock (_queueLock) - { - for (int i = 0; i < _totalChunks; i++) - { - TryEnqueue(i, 100 + i); - } - } - Log.Info($"[CacheStream] Full download enabled for {_cacheId}"); - } - - public void ReleaseRamBuffers() - { - if (_disposed) return; - - int removed = 0; - long freed = 0; - - foreach (var kvp in _chunks) - { - int idx = kvp.Key; - long start = (long)idx * _chunkSize; - long end = Math.Min(start + _chunkSize, _contentLength); - - if (_diskRanges.IsRangeComplete(start, end)) - { - if (_chunks.TryRemove(idx, out var buffer)) - { - freed += buffer.Length; - removed++; - ArrayPool.Shared.Return(buffer); - } - } - } - - if (freed > 0) - { - MemoryDiagnostics.UntrackBytes("Stream.RAMChunks", freed); - Log.Info($"[CacheStream] Released {removed} chunks ({freed / 1024 / 1024}MB) on minimize"); - } - } - - #endregion - - #region Stream Implementation - - public override int Read(byte[] buffer, int offset, int count) - { - if (_disposed || _disposing || _disposeCts.IsCancellationRequested) return 0; - - long pos = Volatile.Read(ref _position); - if (pos >= _contentLength) return 0; - - count = (int)Math.Min(count, _contentLength - pos); - if (count <= 0) return 0; - - int chunkIndex = (int)(pos / _chunkSize); - int offsetInChunk = (int)(pos % _chunkSize); - int toRead = Math.Min(count, _chunkSize - offsetInChunk); - - try - { - // Wait for chunk - while (!HasChunk(chunkIndex)) - { - if (_disposed || _disposing || _disposeCts.IsCancellationRequested) return 0; - EnqueueUrgent(chunkIndex); - try { _dataAvailable.Wait(500, _disposeCts.Token); } catch { return 0; } - if (!HasChunk(chunkIndex)) _dataAvailable.Reset(); - } - - int bytesRead = ReadChunk(chunkIndex, offsetInChunk, buffer, offset, toRead); - if (bytesRead > 0) - { - Interlocked.Add(ref _position, bytesRead); - - // ИСПРАВЛЕНИЕ: Read-ahead только если не на паузе и буфер не полон - if (!_isPaused || _downloadFullTrack) - { - EnqueueReadAheadLimited(chunkIndex); - } - } - return bytesRead; - } - catch { return 0; } - } - - public override long Seek(long offset, SeekOrigin origin) - { - if (_disposed) return 0; - - long newPos = origin switch - { - SeekOrigin.Begin => offset, - SeekOrigin.Current => Position + offset, - SeekOrigin.End => _contentLength + offset, - _ => throw new ArgumentOutOfRangeException(nameof(origin)) - }; - - newPos = Math.Clamp(newPos, 0, _contentLength); - Volatile.Write(ref _position, newPos); - - int newChunk = (int)(newPos / _chunkSize); - EnqueueUrgent(newChunk); - - return newPos; - } - - public override void Flush() { } - public override void SetLength(long value) => throw new NotSupportedException(); - public override void Write(byte[] buffer, int offset, int count) => throw new NotSupportedException(); - - #endregion - - #region Chunk Operations - - [MethodImpl(MethodImplOptions.AggressiveInlining)] - private bool HasChunk(int idx) - { - if (_chunks.ContainsKey(idx)) return true; - long start = (long)idx * _chunkSize; - return _diskRanges.IsRangeComplete(start, Math.Min(start + _chunkSize, _contentLength)); - } - - private int ReadChunk(int idx, int off, byte[] buf, int bufOff, int count) - { - // Try RAM first - if (_chunks.TryGetValue(idx, out var chunk)) - { - int usefulLen = idx == _totalChunks - 1 - ? (int)(_contentLength - ((long)idx * _chunkSize)) - : _chunkSize; - int available = Math.Min(count, usefulLen - off); - if (available > 0) Buffer.BlockCopy(chunk, off, buf, bufOff, available); - return available; - } - - // Fall back to disk - long start = (long)idx * _chunkSize; - if (_diskRanges.IsRangeComplete(start, Math.Min(start + _chunkSize, _contentLength))) - return ReadFromDisk(start + off, buf, bufOff, count); - - return 0; - } - - private int ReadFromDisk(long pos, byte[] buf, int off, int count) - { - if (_cacheFile == null || _disposing) return 0; - - try - { - _fileSemaphore.Wait(_disposeCts.Token); - try - { - if (_cacheFile == null) return 0; - _cacheFile.Seek(pos, SeekOrigin.Begin); - return _cacheFile.Read(buf, off, count); - } - finally { _fileSemaphore.Release(); } - } - catch { return 0; } - } - - #endregion - - #region Download Queue - - private void EnqueueUrgent(int idx) - { - lock (_queueLock) - { - TryEnqueue(idx, 0); - for (int i = 1; i <= 3 && idx + i < _totalChunks; i++) - TryEnqueue(idx + i, i); - } - } - - /// - /// Read-ahead с ограничением буфера - /// - private void EnqueueReadAheadLimited(int current) - { - if (_downloadComplete) return; - - lock (_queueLock) - { - // Считаем сколько чанков уже скачано/в процессе вперёд от текущей позиции - int bufferedAhead = 0; - for (int i = current + 1; i < _totalChunks && i <= current + _maxBufferAhead; i++) - { - if (HasChunk(i) || _pendingDownloads.ContainsKey(i) || _queuedChunks.Contains(i)) - bufferedAhead++; - else - break; // Первый пропуск - прекращаем подсчёт - } - - // Если буфер достаточен - не добавляем новые чанки - if (!_downloadFullTrack && bufferedAhead >= _maxBufferAhead) - { - return; - } - - // Добавляем только недостающие чанки до лимита - int toAdd = _downloadFullTrack ? _readAheadChunks : Math.Min(_readAheadChunks, _maxBufferAhead - bufferedAhead); - - for (int i = 1; i <= toAdd && current + i < _totalChunks; i++) - { - TryEnqueue(current + i, 50 + i); - } - } - } - - [MethodImpl(MethodImplOptions.AggressiveInlining)] - private void TryEnqueue(int idx, int priority) - { - if (HasChunk(idx) || _pendingDownloads.ContainsKey(idx)) return; - if (_queuedChunks.Add(idx)) - _downloadQueue.Enqueue(idx, priority); - } - - #endregion - - #region Download Loop - - private async Task DownloadLoopAsync(CancellationToken ct) - { - while (!ct.IsCancellationRequested && !_disposing) - { - // Если на паузе и не в режиме полного скачивания - ждём - if (_isPaused && !_downloadFullTrack) - { - await Task.Delay(500, ct).ConfigureAwait(false); - continue; - } - - int chunk = -1; - int currentPosition = (int)(Volatile.Read(ref _position) / _chunkSize); - - lock (_queueLock) - { - // Проверяем нужно ли ещё качать - if (!_downloadFullTrack && !ShouldContinueDownloading(currentPosition)) - { - // Буфер полон - очищаем очередь - _downloadQueue.Clear(); - _queuedChunks.Clear(); - } - - while (_downloadQueue.Count > 0) - { - var c = _downloadQueue.Dequeue(); - _queuedChunks.Remove(c); - if (!HasChunk(c) && !_pendingDownloads.ContainsKey(c)) - { - chunk = c; - break; - } - } - } - - if (chunk < 0) - { - if (IsAllDownloaded()) - { - _downloadComplete = true; - break; - } - try { await Task.Delay(100, ct); } catch { break; } - continue; - } - - try { await _downloadSemaphore.WaitAsync(ct); } - catch { break; } - - _ = DownloadChunkAsync(chunk, ct); - } - } - - /// - /// Проверка нужно ли продолжать скачивание - /// - private bool ShouldContinueDownloading(int currentChunk) - { - if (_downloadFullTrack || _downloadComplete) return true; - - // Считаем скачанные чанки впереди - int bufferedAhead = 0; - for (int i = currentChunk; i < _totalChunks && i <= currentChunk + _maxBufferAhead + 5; i++) - { - if (HasChunk(i) || _pendingDownloads.ContainsKey(i)) - bufferedAhead++; - } - - // Продолжаем только если буфер меньше лимита - return bufferedAhead < _maxBufferAhead; - } - - private async Task DownloadChunkAsync(int idx, CancellationToken ct) - { - byte[]? buffer = null; - int retry = 0; - const int maxRetries = 2; - - try - { - if (HasChunk(idx) || _disposing) return; - - var tcs = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously); - if (!_pendingDownloads.TryAdd(idx, tcs.Task)) return; - - while (retry <= maxRetries) - { - try - { - long start = (long)idx * _chunkSize; - long end = Math.Min(start + _chunkSize - 1, _contentLength - 1); - - using var req = new HttpRequestMessage(HttpMethod.Get, _url); - req.Headers.Range = new RangeHeaderValue(start, end); - - using var cts = CancellationTokenSource.CreateLinkedTokenSource(ct, _downloadCts.Token); - cts.CancelAfter(_downloadTimeoutMs); - - using var resp = await _http.SendAsync(req, HttpCompletionOption.ResponseHeadersRead, cts.Token); - - if (resp.StatusCode == HttpStatusCode.Forbidden && retry < maxRetries && _urlRefresher != null) - { - await RefreshUrlAsync(cts.Token); - retry++; - continue; - } - - resp.EnsureSuccessStatusCode(); - - buffer = ArrayPool.Shared.Rent(_chunkSize); - using var netStream = await resp.Content.ReadAsStreamAsync(cts.Token); - - int totalRead = 0, bytesRead; - while ((bytesRead = await netStream.ReadAsync(buffer.AsMemory(totalRead, _chunkSize - totalRead), cts.Token)) > 0) - totalRead += bytesRead; - - if (!_chunks.ContainsKey(idx) && !_disposing) - { - _chunks[idx] = buffer; - Interlocked.Add(ref _bytesDownloaded, totalRead); - _dataAvailable.Set(); - - MemoryDiagnostics.TrackBytes("Stream.RAMChunks", buffer.Length); - - // Queue for disk write - if (_cacheFile != null && !_disposing) - { - var diskBuf = ArrayPool.Shared.Rent(totalRead); - Buffer.BlockCopy(buffer, 0, diskBuf, 0, totalRead); - await _diskChannel.Writer.WriteAsync((start, diskBuf, totalRead), cts.Token); - } - - buffer = null; // Ownership transferred - - if (_chunks.Count > _maxRamChunks) - TrimRamCache(); - } - - tcs.SetResult(); - break; - } - catch (Exception ex) when (retry < maxRetries && ex is not OperationCanceledException) - { - await Task.Delay(500, ct); - retry++; - } - } - } - catch (Exception ex) - { - if (ex is not OperationCanceledException) - Log.Warn($"[CacheStream] Chunk {idx} error: {ex.Message}"); - } - finally - { - if (buffer != null) ArrayPool.Shared.Return(buffer); - _pendingDownloads.TryRemove(idx, out _); - _downloadSemaphore.Release(); - } - } - - private async ValueTask RefreshUrlAsync(CancellationToken ct) - { - await _refreshLock.WaitAsync(ct); - try - { - var newUrl = await _urlRefresher!(ct); - if (!string.IsNullOrEmpty(newUrl)) _url = newUrl; - } - finally { _refreshLock.Release(); } - } - - private void TrimRamCache() - { - if (_chunks.Count <= _maxRamChunks) return; - - int current = (int)(Volatile.Read(ref _position) / _chunkSize); - int keepStart = current - 2; - int keepEnd = current + _readAheadChunks * 2; - - foreach (var key in _chunks.Keys) - { - if (key < keepStart || key > keepEnd) - { - if (_chunks.TryRemove(key, out var buf)) - { - MemoryDiagnostics.UntrackBytes("Stream.RAMChunks", buf.Length); - ArrayPool.Shared.Return(buf); - } - } - } - } - - private bool IsAllDownloaded() - { - for (int i = 0; i < _totalChunks; i++) - if (!HasChunk(i)) return false; - return true; - } - - #endregion - - #region Disk Writer - - private async Task DiskWriterLoopAsync() - { - int bytesWritten = 0; - - try - { - await foreach (var (pos, data, len) in _diskChannel.Reader.ReadAllAsync(_disposeCts.Token)) - { - try - { - if (_disposing || _cacheFile == null) continue; - - await _fileSemaphore.WaitAsync(_disposeCts.Token); - try - { - if (_cacheFile != null) - { - _cacheFile.Seek(pos, SeekOrigin.Begin); - await _cacheFile.WriteAsync(data.AsMemory(0, len), _disposeCts.Token); - } - } - finally { _fileSemaphore.Release(); } - - _diskRanges.MarkComplete(pos, pos + len); - bytesWritten += len; - - if (!_downloadComplete && _diskRanges.IsFullyDownloaded(_contentLength)) - { - _downloadComplete = true; - SaveRanges(); - bytesWritten = 0; - Log.Info($"[CacheStream] {_cacheId} fully cached!"); - _cacheManager.TriggerCacheCompleted(_cacheId, _originalTrackId); - } - else if (bytesWritten >= DiskSaveThresholdBytes) - { - SaveRanges(); - bytesWritten = 0; - } - } - catch (OperationCanceledException) { break; } - catch (Exception ex) { Log.Error($"[CacheStream] Disk write error: {ex.Message}"); } - finally { ArrayPool.Shared.Return(data); } - } - } - catch (OperationCanceledException) { } - finally - { - if (!_downloadComplete && _diskRanges.IsFullyDownloaded(_contentLength)) - { - _downloadComplete = true; - SaveRanges(); - _cacheManager.TriggerCacheCompleted(_cacheId, _originalTrackId); - } - } - } - - [MethodImpl(MethodImplOptions.AggressiveInlining)] - private void SaveRanges() - { - try { StreamCacheManager.UpdateRanges(_cacheId, _diskRanges); } catch { } - } - - #endregion - - #region File Helpers - - private static FileStream? OpenCacheFile(string path) - { - var dir = Path.GetDirectoryName(path); - if (!string.IsNullOrEmpty(dir) && !Directory.Exists(dir)) - { - try { Directory.CreateDirectory(dir); } - catch (Exception ex) - { - Log.Error($"[CacheStream] Failed to create dir: {ex.Message}"); - return null; - } - } - - for (int attempt = 1; attempt <= MaxFileOpenRetries; attempt++) - { - try - { - return new FileStream(path, FileMode.OpenOrCreate, FileAccess.ReadWrite, - FileShare.ReadWrite, 65536, FileOptions.Asynchronous | FileOptions.RandomAccess); - } - catch (IOException) when (attempt < MaxFileOpenRetries) - { - Thread.Sleep(FileOpenRetryDelayMs * attempt); - } - catch (Exception ex) - { - Log.Error($"[CacheStream] File open error: {ex.Message}"); - return null; - } - } - return null; - } - - #endregion - - #region Dispose - - protected override void Dispose(bool disposing) - { - if (_disposed) return; - _disposing = true; - _disposed = true; - - if (disposing) - { - MemoryDiagnostics.UntrackInstance("Stream.Active"); - MemoryDiagnostics.UntrackBytes("Stream.TotalSize", _contentLength); - - Try(_downloadCts.Cancel); - Try(_disposeCts.Cancel); - Try(() => _diskChannel.Writer.TryComplete()); - - while (_diskChannel.Reader.TryRead(out var item)) - ArrayPool.Shared.Return(item.Data); - - SaveRanges(); - _dataAvailable.Set(); - - _ = Task.Run(async () => - { - try - { - await Task.WhenAny(_diskWriterTask, Task.Delay(1000)); - - await _fileSemaphore.WaitAsync(2000); - try - { - Try(() => _cacheFile?.Flush()); - Try(() => _cacheFile?.Dispose()); - _cacheFile = null; - } - finally { _fileSemaphore.Release(); } - } - finally - { - long freed = 0; - foreach (var buf in _chunks.Values) - { - freed += buf.Length; - Try(() => ArrayPool.Shared.Return(buf)); - } - - if (freed > 0) - MemoryDiagnostics.UntrackBytes("Stream.RAMChunks", freed); - - _chunks.Clear(); - - Try(_fileSemaphore.Dispose); - Try(_downloadSemaphore.Dispose); - Try(_refreshLock.Dispose); - Try(_downloadCts.Dispose); - Try(_disposeCts.Dispose); - } - }); - } - - base.Dispose(disposing); - } - - [MethodImpl(MethodImplOptions.AggressiveInlining)] - private static void Try(Action a) { try { a(); } catch { } } - - #endregion -} \ No newline at end of file diff --git a/Core/Services/MusicLibraryManager.cs b/Core/Services/MusicLibraryManager.cs index 0f5ff9a..b3f4f53 100644 --- a/Core/Services/MusicLibraryManager.cs +++ b/Core/Services/MusicLibraryManager.cs @@ -134,7 +134,7 @@ public async Task DeletePlaylistAsync(string playlistId, CancellationToken ct = { try { - await _ytUser.DeletePlaylistAsync(playlist.YoutubeId); + await YoutubeUserDataService.DeletePlaylistAsync(playlist.YoutubeId); } catch (Exception ex) { diff --git a/Core/Services/NotificationService.cs b/Core/Services/NotificationService.cs new file mode 100644 index 0000000..c536854 --- /dev/null +++ b/Core/Services/NotificationService.cs @@ -0,0 +1,400 @@ +using System.Collections.ObjectModel; +using System.Text.Json; +using Avalonia.Threading; +using LMP.Core.Data.Entities; +using LMP.Core.Data.Repositories; +using LMP.Core.Helpers; +using LMP.Core.Models; +using ReactiveUI; + +namespace LMP.Core.Services; + +public sealed class NotificationService : ReactiveObject, IDisposable +{ + private readonly LibraryService _libraryService; + private readonly INotificationRepository _repository; + + private const int MaxNotifications = 50; + private const int DefaultToastDuration = 4000; + + public ObservableCollection Notifications { get; } = []; + + public int UnreadCount => Notifications.Count(n => !n.IsRead); + public bool HasUnread => UnreadCount > 0; + + private Notification? _currentToast; + public Notification? CurrentToast + { + get => _currentToast; + private set => this.RaiseAndSetIfChanged(ref _currentToast, value); + } + + public bool IsToastVisible => CurrentToast != null; + + private CancellationTokenSource? _toastCts; + private bool _isInitialized; + + public NotificationService(LibraryService libraryService, INotificationRepository repository) + { + _libraryService = libraryService; + _repository = repository; + Log.Info("[NotificationService] Initialized"); + } + + #region Initialization + + public async Task InitializeAsync(CancellationToken ct = default) + { + if (_isInitialized) return; + + try + { + var entities = await _repository.GetRecentAsync(MaxNotifications, ct); + + await Dispatcher.UIThread.InvokeAsync(() => + { + foreach (var entity in entities) + { + Notifications.Add(EntityToModel(entity)); + } + + this.RaisePropertyChanged(nameof(UnreadCount)); + this.RaisePropertyChanged(nameof(HasUnread)); + }); + + _isInitialized = true; + Log.Info($"[NotificationService] Loaded {entities.Count} notifications from DB"); + } + catch (Exception ex) + { + Log.Error($"[NotificationService] Failed to load history: {ex.Message}"); + _isInitialized = true; + } + } + + #endregion + + #region Public API + + public async Task ShowToastAsync( + string titleKey, + string messageKey, + NotificationSeverity severity = NotificationSeverity.Info, + int durationMs = 0, + object[]? messageArgs = null, + CancellationToken ct = default) + { + if (durationMs <= 0) + durationMs = DefaultToastDuration; + + var notification = new Notification + { + TitleKey = titleKey, + MessageKey = messageKey, + MessageArgs = messageArgs, + Severity = severity + }; + + await AddToHistoryAsync(notification); + await PersistAsync(notification); + await ShowToastInternalAsync(notification, durationMs, ct); + } + + public async Task ShowPlaybackErrorAsync( + string titleKey, + string messageKey, + string? trackId, + string? trackTitle, + IEnumerable? attempts, + string? exceptionDetails, + NotificationSeverity severity = NotificationSeverity.Error, + int durationMs = 0, + string? recommendationKey = null, + object[]? messageArgs = null, + CancellationToken ct = default) + { + if (durationMs <= 0) + durationMs = DefaultToastDuration; + + var notification = new Notification + { + TitleKey = titleKey, + MessageKey = messageKey, + MessageArgs = messageArgs, + Severity = severity, + TrackId = trackId, + TrackTitle = trackTitle, + Attempts = attempts != null ? new ObservableCollection(attempts) : null, + ExceptionDetails = exceptionDetails, + RecommendationKey = recommendationKey + }; + + await AddToHistoryAsync(notification); + await PersistAsync(notification); + await ShowToastInternalAsync(notification, durationMs, ct); + } + + public static async Task ShowOsNotificationAsync( + string title, + string message, + NotificationSeverity severity = NotificationSeverity.Info, + CancellationToken ct = default) + { + await OsNotificationHelper.ShowAsync(title, message, severity); + } + + public void PlayErrorSound() + { + var settings = _libraryService.Settings.Audio; + if (!settings.PlayErrorSound) + return; + + ErrorSoundPlayer.PlayError(); + } + + public static void PlaySuccessSound() + { + ErrorSoundPlayer.PlaySuccess(); + } + + #endregion + + #region Persistence + + private async Task PersistAsync(Notification notification) + { + try + { + var entity = ModelToEntity(notification); + await _repository.AddAsync(entity); + await _repository.PruneAsync(MaxNotifications * 2); + } + catch (Exception ex) + { + Log.Warn($"[NotificationService] Failed to persist: {ex.Message}"); + } + } + + private static NotificationEntity ModelToEntity(Notification n) + { + string? attemptsJson = null; + if (n.Attempts is { Count: > 0 }) + { + var records = n.Attempts.Select(a => new AttemptDto(a.ClientName, a.Success, a.ErrorMessage, a.Timestamp)); + attemptsJson = JsonSerializer.Serialize(records); + } + + string? argsJson = null; + if (n.MessageArgs is { Length: > 0 }) + { + // Сохраняем как string[] для простоты + argsJson = JsonSerializer.Serialize(n.MessageArgs.Select(a => a?.ToString()).ToArray()); + } + + return new NotificationEntity + { + Id = n.Id.ToString(), + TitleKey = n.TitleKey, + TitleRaw = n.TitleRaw, + MessageKey = n.MessageKey, + MessageRaw = n.MessageRaw, + MessageArgsJson = argsJson, + RecommendationKey = n.RecommendationKey, + Severity = (int)n.Severity, + IsRead = n.IsRead, + TrackId = n.TrackId, + TrackTitle = n.TrackTitle, + ExceptionDetails = n.ExceptionDetails, + AttemptsJson = attemptsJson, + CreatedAt = n.Timestamp + }; + } + + private static Notification EntityToModel(NotificationEntity e) + { + ObservableCollection? attempts = null; + if (!string.IsNullOrEmpty(e.AttemptsJson)) + { + try + { + var dtos = JsonSerializer.Deserialize>(e.AttemptsJson); + if (dtos is { Count: > 0 }) + { + attempts = new ObservableCollection( + dtos.Select(d => new AttemptRecord(d.ClientName, d.Success, d.ErrorMessage, d.Timestamp))); + } + } + catch { /* ignore */ } + } + + object[]? args = null; + if (!string.IsNullOrEmpty(e.MessageArgsJson)) + { + try + { + args = JsonSerializer.Deserialize(e.MessageArgsJson)? + .Cast().ToArray(); + } + catch { /* ignore */ } + } + + return new Notification + { + Id = Guid.TryParse(e.Id, out var guid) ? guid : Guid.NewGuid(), + Timestamp = e.CreatedAt, + TitleKey = e.TitleKey, + TitleRaw = e.TitleRaw, + MessageKey = e.MessageKey, + MessageRaw = e.MessageRaw, + MessageArgs = args, + RecommendationKey = e.RecommendationKey, + Severity = (NotificationSeverity)e.Severity, + IsRead = e.IsRead, + TrackId = e.TrackId, + TrackTitle = e.TrackTitle, + ExceptionDetails = e.ExceptionDetails, + Attempts = attempts + }; + } + + /// + /// DTO для сериализации попыток в JSON. + /// + private sealed record AttemptDto(string ClientName, bool Success, string? ErrorMessage, DateTime Timestamp); + + #endregion + + #region Internal Methods + + private async Task AddToHistoryAsync(Notification notification) + { + await Dispatcher.UIThread.InvokeAsync(() => + { + Notifications.Insert(0, notification); + + while (Notifications.Count > MaxNotifications) + { + Notifications.RemoveAt(Notifications.Count - 1); + } + + this.RaisePropertyChanged(nameof(UnreadCount)); + this.RaisePropertyChanged(nameof(HasUnread)); + }); + } + + private async Task ShowToastInternalAsync(Notification notification, int durationMs, CancellationToken ct) + { + _toastCts?.Cancel(); + _toastCts?.Dispose(); + _toastCts = CancellationTokenSource.CreateLinkedTokenSource(ct); + var localCts = _toastCts; + + await Dispatcher.UIThread.InvokeAsync(() => + { + CurrentToast = notification; + this.RaisePropertyChanged(nameof(IsToastVisible)); + }); + + _ = Task.Run(async () => + { + try + { + await Task.Delay(durationMs, localCts.Token); + + await Dispatcher.UIThread.InvokeAsync(() => + { + if (CurrentToast == notification) + { + CurrentToast = null; + this.RaisePropertyChanged(nameof(IsToastVisible)); + } + }); + } + catch (OperationCanceledException) { } + }, localCts.Token); + } + + #endregion + + #region UI Commands + + public void MarkAllAsRead() + { + Dispatcher.UIThread.Post(() => + { + foreach (var notification in Notifications) + notification.IsRead = true; + + this.RaisePropertyChanged(nameof(UnreadCount)); + this.RaisePropertyChanged(nameof(HasUnread)); + }); + + _ = Task.Run(async () => + { + try { await _repository.MarkAllAsReadAsync(); } + catch (Exception ex) { Log.Warn($"[NotificationService] MarkAllAsRead DB error: {ex.Message}"); } + }); + } + + public void ClearAll() + { + Dispatcher.UIThread.Post(() => + { + Notifications.Clear(); + this.RaisePropertyChanged(nameof(UnreadCount)); + this.RaisePropertyChanged(nameof(HasUnread)); + }); + + _ = Task.Run(async () => + { + try { await _repository.ClearAllAsync(); } + catch (Exception ex) { Log.Warn($"[NotificationService] ClearAll DB error: {ex.Message}"); } + }); + } + + public void Remove(Notification notification) + { + Dispatcher.UIThread.Post(() => + { + Notifications.Remove(notification); + this.RaisePropertyChanged(nameof(UnreadCount)); + this.RaisePropertyChanged(nameof(HasUnread)); + }); + } + + public void DismissToast() + { + _toastCts?.Cancel(); + + Dispatcher.UIThread.Post(() => + { + CurrentToast = null; + this.RaisePropertyChanged(nameof(IsToastVisible)); + }); + } + + public void MarkAsRead(Notification notification) + { + Dispatcher.UIThread.Post(() => + { + notification.IsRead = true; + this.RaisePropertyChanged(nameof(UnreadCount)); + this.RaisePropertyChanged(nameof(HasUnread)); + }); + } + + #endregion + + #region Dispose + + public void Dispose() + { + _toastCts?.Cancel(); + _toastCts?.Dispose(); + Notifications.Clear(); + CurrentToast = null; + Log.Info("[NotificationService] Disposed"); + } + + #endregion +} \ No newline at end of file diff --git a/Core/Services/PlaybackErrorOrchestrator.cs b/Core/Services/PlaybackErrorOrchestrator.cs new file mode 100644 index 0000000..07fd9d0 --- /dev/null +++ b/Core/Services/PlaybackErrorOrchestrator.cs @@ -0,0 +1,651 @@ +using Avalonia.Threading; +using LMP.Core.Exceptions; +using LMP.Core.Models; +using LMP.Core.Youtube.Exceptions; + +namespace LMP.Core.Services; + +/// +/// Оркестратор обработки ошибок воспроизведения. +/// Единый центр принятия решений. +/// Полностью неблокирующий — использует toast-уведомления вместо модальных диалогов. +/// +public sealed class PlaybackErrorOrchestrator : IDisposable +{ + private readonly YoutubeProvider _youtube; + private readonly AudioEngine _audioEngine; + private readonly IDialogService _dialogService; + private readonly NotificationService _notificationService; + private readonly LibraryService _libraryService; + + private readonly SemaphoreSlim _errorLock = new(1, 1); + private readonly HashSet _recentlyShownErrors = new(StringComparer.Ordinal); + private DateTime _lastErrorCleanup = DateTime.MinValue; + + private static readonly TimeSpan ErrorCacheCleanupInterval = TimeSpan.FromMinutes(1); + private static readonly TimeSpan ErrorDeduplicationWindow = TimeSpan.FromSeconds(10); + + /// + /// Длительность toast для стратегии Dialog (дольше, чтобы пользователь заметил). + /// + private const int DialogToastDurationMs = 8000; + + /// + /// Длительность toast для стратегии ToastAndSkip. + /// + private const int SkipToastDurationMs = 5000; + + private volatile bool _disposed; + + public PlaybackErrorOrchestrator( + YoutubeProvider youtube, + AudioEngine audioEngine, + IDialogService dialogService, + NotificationService notificationService, + LibraryService libraryService) + { + _youtube = youtube ?? throw new ArgumentNullException(nameof(youtube)); + _audioEngine = audioEngine ?? throw new ArgumentNullException(nameof(audioEngine)); + _dialogService = dialogService ?? throw new ArgumentNullException(nameof(dialogService)); + _notificationService = notificationService ?? throw new ArgumentNullException(nameof(notificationService)); + _libraryService = libraryService ?? throw new ArgumentNullException(nameof(libraryService)); + + // Подписываемся на ошибки AudioEngine + _audioEngine.OnErrorOccurred += HandleError; + + // ═══ Подтверждение подписки ═══ + Log.Info($"[PlaybackErrorOrchestrator] Subscribed to AudioEngine.OnErrorOccurred (handler count verification)"); + Log.Info("[PlaybackErrorOrchestrator] Initialized and ready"); + } + + #region Error Handling + + private void HandleError(Exception exception) + { + if (_disposed) return; + + // ═══ Подтверждение получения ошибки ═══ + Log.Info($"[Orchestrator] ◆ Received error event: {exception.GetType().Name}: {exception.Message}"); + + _ = HandleErrorAsync(exception); + } + + public async Task HandleErrorAsync(Exception exception) + { + if (_disposed) return; + + string errorKey = GetErrorDeduplicationKey(exception); + if (!TryRegisterError(errorKey)) + { + Log.Debug($"[Orchestrator] Skipping duplicate error: {errorKey}"); + return; + } + + Log.Info($"[Orchestrator] Handling: {exception.GetType().Name}"); + + try + { + var actualException = UnwrapException(exception); + + await (actualException switch + { + BotDetectionException botEx => HandleBotDetectionAsync(botEx), + LoginRequiredException loginEx => HandleLoginRequiredAsync(loginEx), + StreamUnavailableException streamEx => HandleStreamUnavailableAsync(streamEx), + ChunkDownloadFatalException chunkEx => HandleChunkFatalAsync(chunkEx), + OperationCanceledException => Task.CompletedTask, + _ => HandleGenericErrorAsync(actualException) + }); + } + catch (Exception ex) + { + Log.Error($"[Orchestrator] Error in handler: {ex.Message}", ex); + } + } + + #endregion + + #region Specific Error Handlers + + /// + /// Bot Detection — показываем диалог с таймером (единственный модальный случай). + /// Требует внимания пользователя, автоскип бессмыслен. + /// + private async Task HandleBotDetectionAsync(BotDetectionException exception) + { + Log.Warn($"[Orchestrator] Bot detection: {exception.FormatRemainingTime()}"); + + await InvokeOnUIAsync(() => _audioEngine.Stop()); + + // BotDetection — единственный случай, где модальный диалог оправдан + // (есть таймер обратного отсчёта) + await _dialogService.ShowBotDetectionCooldownAsync(exception.RemainingCooldown); + } + + /// + /// Login Required — toast с инструкцией + паузой. + /// + private async Task HandleLoginRequiredAsync(LoginRequiredException exception) + { + Log.Warn($"[Orchestrator] Login required: {exception.Reason} for {exception.VideoId}"); + + var settings = _libraryService.Settings.Audio; + + await InvokeOnUIAsync(() => _audioEngine.SetPlaybackStateAsync(false)); + + if (settings.PlayErrorSound) + _notificationService.PlayErrorSound(); + + var message = GetLoginRequiredMessage(exception); + var recommendation = GetRecommendation(exception); + var (Id, Title) = GetCurrentTrackInfo(); + + await _notificationService.ShowPlaybackErrorAsync( + LocalizationService.Instance["Error_Playback_Title"], + message, + Id, + Title, + null, + exception.ToString(), + NotificationSeverity.Error, + durationMs: DialogToastDurationMs, + recommendationKey: recommendation); + + await NotificationService.ShowOsNotificationAsync( + LocalizationService.Instance["Error_Playback_Title"], + message, + NotificationSeverity.Error); + } + + /// + /// Stream Unavailable — поведение зависит от настроек. + /// + private async Task HandleStreamUnavailableAsync(StreamUnavailableException exception) + { + Log.Error($"[Orchestrator] Stream unavailable: {exception.Reason} for {exception.VideoId}"); + + var behavior = GetErrorBehavior(); + var settings = _libraryService.Settings.Audio; + var trackInfo = GetCurrentTrackInfo(); + var attempts = ExtractAttemptsFromException(exception); + + var messageKey = GetStreamErrorMessageKey(exception); + var recommendationKey = GetRecommendationKey(exception); + + switch (behavior) + { + case PlaybackErrorBehavior.Dialog: + await HandleWithPauseAndToastAsync( + "Error_StreamUnavailable_Title", + messageKey, trackInfo.Id, trackInfo.Title, attempts, + exception.ToString(), settings.PlayErrorSound, recommendationKey); + break; + + case PlaybackErrorBehavior.ToastAndSkip: + await HandleWithToastAndSkipAsync( + "Error_StreamUnavailable_Title", + messageKey, trackInfo.Id, trackInfo.Title, attempts, + exception.ToString(), settings.PlayErrorSound, recommendationKey); + break; + + case PlaybackErrorBehavior.Ignore: + await HandleWithSkipOnlyAsync(); + break; + } + } + + private static string GetStreamErrorMessageKey(StreamUnavailableException exception) + { + return exception.Reason switch + { + StreamUnavailableReason.Forbidden403 => "Error_Stream_Forbidden", + StreamUnavailableReason.RegionBlocked => "Error_Stream_RegionBlocked", + StreamUnavailableReason.AgeRestricted => "Error_Stream_AgeRestricted", + StreamUnavailableReason.Private => "Error_Stream_Private", + StreamUnavailableReason.AllClientsFailed => "Error_Stream_AllClientsFailed", + StreamUnavailableReason.LiveStream => "Error_Stream_LiveStream", + StreamUnavailableReason.Removed => "Error_Stream_Removed", + StreamUnavailableReason.PaymentRequired => "Error_Stream_PaymentRequired", + _ => "Error_Stream_Unknown" + }; + } + + private string? GetRecommendationKey(Exception exception) + { + var isAuthenticated = _youtube.AuthService.IsAuthenticated; + + return exception switch + { + LoginRequiredException login => login.Reason switch + { + LoginRequiredReason.AgeRestricted => "Recommendation_Login_AgeRestricted", + LoginRequiredReason.MembersOnly => "Recommendation_MembersOnly", + _ => "Recommendation_Login" + }, + + StreamUnavailableException stream => stream.Reason switch + { + StreamUnavailableReason.Forbidden403 => isAuthenticated ? "Recommendation_ChangeClient" : "Recommendation_Login_403", + StreamUnavailableReason.AllClientsFailed => isAuthenticated ? "Recommendation_AllClientsFailed_Auth" : "Recommendation_Login_403", + StreamUnavailableReason.RegionBlocked => "Recommendation_UseVPN", + StreamUnavailableReason.AgeRestricted => "Recommendation_Login_AgeRestricted", + StreamUnavailableReason.Private => "Recommendation_Private", + StreamUnavailableReason.Removed => "Recommendation_Removed", + StreamUnavailableReason.PaymentRequired => "Recommendation_Payment", + StreamUnavailableReason.LiveStream => "Recommendation_LiveStream", + _ => "Recommendation_ContactDev" + }, + + ChunkDownloadFatalException chunk => chunk.Reason switch + { + ChunkDownloadFailureReason.Forbidden403 => isAuthenticated ? "Recommendation_ChangeClient" : "Recommendation_Login_403", + ChunkDownloadFailureReason.NetworkError => "Recommendation_CheckNetwork", + ChunkDownloadFailureReason.UmpFormat => "Recommendation_ChangeClient", + _ => "Recommendation_ContactDev" + }, + + _ => null + }; + } + + private async Task HandleChunkFatalAsync(ChunkDownloadFatalException exception) + { + Log.Error($"[Orchestrator] Chunk fatal: {exception.Reason} at chunk {exception.ChunkIndex}"); + + var behavior = GetErrorBehavior(); + var settings = _libraryService.Settings.Audio; + var (Id, Title) = GetCurrentTrackInfo(); + var message = GetChunkErrorMessage(exception); + var recommendation = GetRecommendation(exception); + + var attempts = new List + { + new( + $"Chunk {exception.ChunkIndex}", + false, + $"{exception.Reason}: {exception.Message}", + DateTime.UtcNow) + }; + + switch (behavior) + { + case PlaybackErrorBehavior.Dialog: + await HandleWithPauseAndToastAsync( + LocalizationService.Instance["Error_Playback_Title"], + message, Id, Title, attempts, + exception.ToString(), settings.PlayErrorSound, recommendation); + break; + + case PlaybackErrorBehavior.ToastAndSkip: + await HandleWithToastAndSkipAsync( + LocalizationService.Instance["Error_Playback_Title"], + message, Id, Title, attempts, + exception.ToString(), settings.PlayErrorSound, recommendation); + break; + + case PlaybackErrorBehavior.Ignore: + await HandleWithSkipOnlyAsync(); + break; + } + } + + /// + /// Generic Error — для неизвестных типов ошибок. + /// + private async Task HandleGenericErrorAsync(Exception exception) + { + Log.Error($"[Orchestrator] Generic error: {exception.Message}"); + + var behavior = GetErrorBehavior(); + var settings = _libraryService.Settings.Audio; + var trackInfo = GetCurrentTrackInfo(); + + if (behavior != PlaybackErrorBehavior.Ignore) + { + if (settings.PlayErrorSound) + _notificationService.PlayErrorSound(); + + await _notificationService.ShowPlaybackErrorAsync( + LocalizationService.Instance["Error_Playback_Title"], + exception.Message, + trackInfo.Id, + trackInfo.Title, + null, + exception.ToString(), + NotificationSeverity.Error); + + await NotificationService.ShowOsNotificationAsync( + LocalizationService.Instance["Error_Playback_Title"], + exception.Message, + NotificationSeverity.Error); + } + + await InvokeOnUIAsync(() => _ = _audioEngine.PlayNextAsync()); + } + + #endregion + + #region Behavior Strategies + + /// + /// Стратегия Dialog (обновлённая): пауза + длинный toast (без модального окна). + /// Пользователь видит уведомление и решает сам. + /// + private async Task HandleWithPauseAndToastAsync( + string titleKey, + string messageKey, + string? trackId, + string? trackTitle, + List? attempts, + string? exceptionDetails, + bool playSound, + string? recommendationKey = null) + { + await InvokeOnUIAsync(() => _audioEngine.SetPlaybackStateAsync(false)); + + if (playSound) + _notificationService.PlayErrorSound(); + + await _notificationService.ShowPlaybackErrorAsync( + titleKey, messageKey, trackId, trackTitle, attempts, exceptionDetails, + NotificationSeverity.Error, + durationMs: DialogToastDurationMs, + recommendationKey: recommendationKey); + + // OS notification с локализованным текстом + var L = LocalizationService.Instance; + await NotificationService.ShowOsNotificationAsync(L[titleKey], L[messageKey], NotificationSeverity.Error); + } + + /// + /// Стратегия ToastAndSkip: звук, toast, OS notification, автоскип. + /// + private async Task HandleWithToastAndSkipAsync( + string titleKey, + string messageKey, + string? trackId, + string? trackTitle, + List? attempts, + string? exceptionDetails, + bool playSound, + string? recommendationKey = null) + { + if (playSound) + _notificationService.PlayErrorSound(); + + await _notificationService.ShowPlaybackErrorAsync( + titleKey, messageKey, trackId, trackTitle, attempts, exceptionDetails, + NotificationSeverity.Warning, + durationMs: SkipToastDurationMs, + recommendationKey: recommendationKey); + + var L = LocalizationService.Instance; + await NotificationService.ShowOsNotificationAsync(L[titleKey], L[messageKey], NotificationSeverity.Warning); + + await InvokeOnUIAsync(() => _ = _audioEngine.PlayNextAsync()); + } + + /// + /// Стратегия Ignore: только skip, без уведомлений. + /// + private async Task HandleWithSkipOnlyAsync() + { + Log.Debug("[Orchestrator] Ignoring error, skipping to next track"); + await InvokeOnUIAsync(() => _ = _audioEngine.PlayNextAsync()); + } + + #endregion + + #region Helpers + + private PlaybackErrorBehavior GetErrorBehavior() + { + return _libraryService.Settings.Audio.CriticalErrorBehavior; + } + + private (string Id, string Title) GetCurrentTrackInfo() + { + var track = _audioEngine.CurrentTrack; + return (track?.Id ?? "unknown", track?.Title ?? "Unknown Track"); + } + + private static List ExtractAttemptsFromException(StreamUnavailableException exception) + { + return + [ + new AttemptRecord( + exception.WasHlsFallback ? "HLS Fallback" : "Stream Request", + false, + $"{exception.Reason}: {exception.Message}", + DateTime.UtcNow) + ]; + } + + private static string GetStreamErrorMessage(StreamUnavailableException exception) + { + var L = LocalizationService.Instance; + + return exception.Reason switch + { + StreamUnavailableReason.Forbidden403 => L["Error_Stream_Forbidden"], + StreamUnavailableReason.RegionBlocked => L["Error_Stream_RegionBlocked"], + StreamUnavailableReason.AgeRestricted => L["Error_Stream_AgeRestricted"], + StreamUnavailableReason.Private => L["Error_Stream_Private"], + StreamUnavailableReason.AllClientsFailed => L["Error_Stream_AllClientsFailed"], + StreamUnavailableReason.LiveStream => L["Error_Stream_LiveStream"], + StreamUnavailableReason.Removed => L["Error_Stream_Removed"], + StreamUnavailableReason.PaymentRequired => L["Error_Stream_PaymentRequired"], + _ => exception.Message + }; + } + + private static string GetChunkErrorMessage(ChunkDownloadFatalException exception) + { + var L = LocalizationService.Instance; + + return exception.Reason switch + { + ChunkDownloadFailureReason.Forbidden403 => L["Error_Stream_Forbidden"], + ChunkDownloadFailureReason.UmpFormat => L["Error_Stream_UmpFormat"], + ChunkDownloadFailureReason.MaxRetriesExceeded => L["Error_Stream_MaxRetries"], + ChunkDownloadFailureReason.NetworkError => L["Error_Stream_Network"], + _ => L["Error_Stream_Unknown"] + }; + } + + private static string GetLoginRequiredMessage(LoginRequiredException exception) + { + var L = LocalizationService.Instance; + + return exception.Reason switch + { + LoginRequiredReason.AgeRestricted => L["Error_Login_AgeRestricted"], + LoginRequiredReason.Private => L["Error_Login_Private"], + LoginRequiredReason.MembersOnly => L["Error_Login_MembersOnly"], + _ => L["Error_Login_Required"] + }; + } + + private static Exception UnwrapException(Exception exception) + { + if (exception is AggregateException agg && agg.InnerExceptions.Count > 0) + return UnwrapException(agg.InnerExceptions[0]); + + var inner = exception.InnerException; + while (inner != null) + { + if (inner is BotDetectionException or + LoginRequiredException or + StreamUnavailableException or + ChunkDownloadFatalException) + { + return inner; + } + inner = inner.InnerException; + } + + return exception; + } + + private static string GetErrorDeduplicationKey(Exception exception) + { + return exception switch + { + BotDetectionException => "bot_detection", + LoginRequiredException login => $"login_{login.VideoId}", + StreamUnavailableException stream => $"stream_{stream.VideoId}_{stream.Reason}", + ChunkDownloadFatalException chunk => $"chunk_{chunk.TrackId}_{chunk.Reason}", + _ => $"generic_{exception.GetType().Name}_{exception.Message.GetHashCode()}" + }; + } + + private bool TryRegisterError(string errorKey) + { + if (DateTime.UtcNow - _lastErrorCleanup > ErrorCacheCleanupInterval) + { + lock (_recentlyShownErrors) + { + _recentlyShownErrors.Clear(); + _lastErrorCleanup = DateTime.UtcNow; + } + } + + lock (_recentlyShownErrors) + { + if (_recentlyShownErrors.Contains(errorKey)) + return false; + + _recentlyShownErrors.Add(errorKey); + + _ = Task.Delay(ErrorDeduplicationWindow).ContinueWith(_ => + { + lock (_recentlyShownErrors) + { + _recentlyShownErrors.Remove(errorKey); + } + }); + + return true; + } + } + + private static async Task InvokeOnUIAsync(Action action) + { + if (Dispatcher.UIThread.CheckAccess()) + action(); + else + await Dispatcher.UIThread.InvokeAsync(action); + } + + private static async Task InvokeOnUIAsync(Func action) + { + if (Dispatcher.UIThread.CheckAccess()) + await action(); + else + await Dispatcher.UIThread.InvokeAsync(action); + } + + #endregion + + #region Recommendations + + /// + /// Формирует рекомендацию по исправлению ошибки. + /// Учитывает статус авторизации пользователя. + /// + private string? GetRecommendation(Exception exception) + { + var L = LocalizationService.Instance; + var isAuthenticated = _youtube.AuthService.IsAuthenticated; + + return exception switch + { + LoginRequiredException login => login.Reason switch + { + LoginRequiredReason.AgeRestricted => L["Recommendation_Login_AgeRestricted"], + LoginRequiredReason.MembersOnly => L["Recommendation_MembersOnly"], + _ => L["Recommendation_Login"] + }, + + StreamUnavailableException stream => GetStreamRecommendation(stream, isAuthenticated, L), + + ChunkDownloadFatalException chunk => GetChunkRecommendation(chunk, isAuthenticated, L), + + _ => null + }; + } + + private static string GetStreamRecommendation( + StreamUnavailableException stream, + bool isAuthenticated, + LocalizationService L) + { + // Для 403 ошибок приоритет — авторизация + if (stream.Reason == StreamUnavailableReason.Forbidden403) + { + return isAuthenticated + ? L["Recommendation_ChangeClient"] + : L["Recommendation_Login_403"]; + } + + if (stream.Reason == StreamUnavailableReason.AllClientsFailed) + { + return isAuthenticated + ? L["Recommendation_AllClientsFailed_Auth"] + : L["Recommendation_Login_403"]; + } + + return stream.Reason switch + { + StreamUnavailableReason.RegionBlocked => L["Recommendation_UseVPN"], + StreamUnavailableReason.AgeRestricted => L["Recommendation_Login_AgeRestricted"], + StreamUnavailableReason.Private => L["Recommendation_Private"], + StreamUnavailableReason.Removed => L["Recommendation_Removed"], + StreamUnavailableReason.PaymentRequired => L["Recommendation_Payment"], + StreamUnavailableReason.LiveStream => L["Recommendation_LiveStream"], + _ => L["Recommendation_ContactDev"] + }; + } + + private static string GetChunkRecommendation( + ChunkDownloadFatalException chunk, + bool isAuthenticated, + LocalizationService L) + { + if (chunk.Reason == ChunkDownloadFailureReason.Forbidden403) + { + return isAuthenticated + ? L["Recommendation_ChangeClient"] + : L["Recommendation_Login_403"]; + } + + return chunk.Reason switch + { + ChunkDownloadFailureReason.NetworkError => L["Recommendation_CheckNetwork"], + ChunkDownloadFailureReason.UmpFormat => L["Recommendation_ChangeClient"], + _ => L["Recommendation_ContactDev"] + }; + } + + #endregion + + #region Dispose + + public void Dispose() + { + if (_disposed) return; + _disposed = true; + + _audioEngine.OnErrorOccurred -= HandleError; + _errorLock.Dispose(); + + lock (_recentlyShownErrors) + { + _recentlyShownErrors.Clear(); + } + + Log.Info("[PlaybackErrorOrchestrator] Disposed"); + } + + #endregion +} \ No newline at end of file diff --git a/Core/Services/SearchCacheService.cs b/Core/Services/SearchCacheService.cs index dcecfdc..0d2739f 100644 --- a/Core/Services/SearchCacheService.cs +++ b/Core/Services/SearchCacheService.cs @@ -24,8 +24,7 @@ public class SearchCacheService private readonly LinkedList _lruOrder = new(); private const int MaxMemoryCacheItems = 15; - private LibraryService? _libService; - private LibraryService LibService => _libService ??= Program.Services.GetRequiredService(); + private LibraryService LibService => field ??= Program.Services.GetRequiredService(); private TimeSpan CacheTtl => TimeSpan.FromMinutes( LibService.Settings.SearchCacheTtlMinutes > 0 diff --git a/Core/Services/StreamCacheManager.cs b/Core/Services/StreamCacheManager.cs deleted file mode 100644 index 7f8f9c1..0000000 --- a/Core/Services/StreamCacheManager.cs +++ /dev/null @@ -1,661 +0,0 @@ -using System.Collections.Concurrent; -using System.Security.Cryptography; -using System.Text; -using System.Text.Json; -using LMP.Core.Models; - -namespace LMP.Core.Services; - -/// -/// Метаданные кэшированного потока. -/// -public class StreamCacheMetadata -{ - public string TrackId { get; set; } = ""; - public string SourceUrl { get; set; } = ""; - public long ContentLength { get; set; } - public DateTime CreatedAt { get; set; } - public DateTime LastAccessedAt { get; set; } - public string RangesJson { get; set; } = "[]"; - public string Codec { get; set; } = ""; - public int Bitrate { get; set; } - public string Container { get; set; } = ""; -} - -/// -/// Менеджер кэширования аудиопотоков. -/// -/// Архитектура кэширования: -/// -/// 1. StreamCache (автоматический): -/// - Заполняется при прослушивании трека -/// - Управляется лимитом AudioCacheLimitMb -/// - Старые файлы удаляются автоматически -/// - Полностью закэшированный трек → IsCached = true -/// -/// 2. Downloads (по запросу): -/// - Только по явному запросу пользователя ИЛИ если AutoSaveToDownloads = true -/// - Файлы НЕ удаляются автоматически -/// - IsDownloaded = true -/// -/// Разница: -/// - IsCached = доступен офлайн через кэш (может быть удалён) -/// - IsDownloaded = сохранён в Downloads (не удаляется) -/// -public class StreamCacheManager : IDisposable -{ - private readonly LibraryService _library; - private readonly SemaphoreSlim _promoteLock = new(1, 1); - private readonly SemaphoreSlim _cleanupLock = new(1, 1); - - // Кэш статусов для быстрой проверки без IO - private readonly ConcurrentDictionary _fullyCachedCache = new(); - private readonly ConcurrentDictionary _promotedCache = new(); - - /// - /// Событие: формат закэширован. - /// Параметры: trackId, container, bitrate, isCached - /// - public event Action? OnFormatCached; - - public StreamCacheManager(LibraryService library) - { - _library = library; - _ = Task.Run(CleanupOldCacheAsync); - } - - #region Cache Completion - - /// - /// Вызывается когда трек полностью закэширован. - /// НЕ копирует в Downloads автоматически (если не включено AutoSaveToDownloads). - /// - /// ID кэша (может включать формат: trackId_container_bitrate). - /// Оригинальный ID трека (без суффикса формата). - public void TriggerCacheCompleted(string cacheId, string? originalTrackId = null) - { - string trackId = originalTrackId ?? ExtractTrackId(cacheId); - _fullyCachedCache[cacheId] = true; - - Task.Run(async () => - { - try - { - var meta = TryGetMetadata(cacheId); - string container = meta?.Container ?? ""; - int bitrate = meta?.Bitrate ?? 0; - - // Обновляем трек — помечаем как закэшированный - var track = await _library.GetTrackAsync(trackId); - if (track != null) - { - track.MarkAsCached(container, bitrate); - await _library.AddOrUpdateTrackAsync(track); - Log.Info($"[StreamCache] ✓ {trackId} cached: {container}/{bitrate}kbps"); - } - - // Если включено автосохранение — копируем в Downloads - if (_library.Settings.Storage.AutoSaveToDownloads) - { - await PromoteToDownloadsAsync(cacheId, trackId); - } - - // Уведомляем UI - NotifyFormatCached(trackId, container, bitrate, true); - } - catch (Exception ex) - { - Log.Error($"[StreamCache] Cache completed error for {trackId}: {ex.Message}"); - } - }); - } - - #endregion - - #region Promote to Downloads - - /// - /// Копирует файл из кэша в Downloads. - /// Вызывается по запросу пользователя или автоматически (если AutoSaveToDownloads). - /// - /// ID кэша. - /// Оригинальный ID трека. - /// True если успешно скопировано. - public async Task PromoteToDownloadsAsync(string cacheId, string? originalTrackId = null) - { - string trackId = originalTrackId ?? ExtractTrackId(cacheId); - - if (_promotedCache.TryGetValue(cacheId, out bool done) && done) - { - Log.Debug($"[CachePromote] Already promoted: {cacheId}"); - return true; - } - - if (!await _promoteLock.WaitAsync(100)) - return false; - - try - { - // Повторная проверка под локом - if (_promotedCache.TryGetValue(cacheId, out done) && done) - return true; - - var track = await _library.GetTrackAsync(trackId); - if (track == null) - { - Log.Warn($"[CachePromote] Track not found: {trackId}"); - return false; - } - - // Если уже скачан — ничего не делаем - if (track.IsDownloaded && !string.IsNullOrEmpty(track.LocalPath) && File.Exists(track.LocalPath)) - { - _promotedCache[cacheId] = true; - return true; - } - - var meta = TryGetMetadata(cacheId); - if (meta == null) - { - Log.Warn($"[CachePromote] No metadata for: {cacheId}"); - return false; - } - - var cachePath = GetCachePath(cacheId); - if (!File.Exists(cachePath)) - { - Log.Warn($"[CachePromote] Cache file not found: {cachePath}"); - return false; - } - - var ranges = RangeMap.Deserialize(meta.RangesJson); - if (!ranges.IsFullyDownloaded(meta.ContentLength)) - { - Log.Warn($"[CachePromote] Not fully cached: {cacheId}"); - return false; - } - - // Формируем путь назначения - string ext = !string.IsNullOrEmpty(meta.Container) ? meta.Container : "m4a"; - string safeName = SanitizeFileName($"{track.Author} - {track.Title}.{ext}"); - string destPath = Path.Combine(G.Folder.Downloads, safeName); - - // Проверяем существующий файл - if (File.Exists(destPath)) - { - var info = new FileInfo(destPath); - if (info.Length == meta.ContentLength) - { - // Файл уже есть и совпадает по размеру - track.MarkAsDownloaded(destPath, meta.Container, meta.Bitrate); - await _library.AddOrUpdateTrackAsync(track); - _promotedCache[cacheId] = true; - Log.Debug($"[CachePromote] File already exists: {safeName}"); - return true; - } - - // Файл есть но другой размер — добавляем битрейт к имени - var baseName = Path.GetFileNameWithoutExtension(safeName); - destPath = Path.Combine(G.Folder.Downloads, $"{baseName}_{meta.Bitrate}kbps.{ext}"); - } - - Log.Info($"[CachePromote] Saving: {Path.GetFileName(destPath)}"); - File.Copy(cachePath, destPath, overwrite: true); - - track.MarkAsDownloaded(destPath, meta.Container, meta.Bitrate); - await _library.AddOrUpdateTrackAsync(track); - - _promotedCache[cacheId] = true; - return true; - } - catch (Exception ex) - { - Log.Error($"[CachePromote] Error: {ex.Message}"); - return false; - } - finally - { - _promoteLock.Release(); - } - } - - /// - /// Экспортирует трек из кэша в Downloads по ID трека. - /// Используется из UI (команда "Сохранить в папку"). - /// - /// ID трека. - /// True если успешно. - public async Task ExportTrackToDownloadsAsync(string trackId) - { - if (IsFullyCached(trackId)) - { - return await PromoteToDownloadsAsync(trackId, trackId); - } - - Log.Warn($"[StreamCache] Track {trackId} not fully cached, cannot export"); - return false; - } - - #endregion - - #region Cache Status - - /// - /// Проверяет, полностью ли закэширован файл. - /// - public bool IsFullyCached(string cacheId) - { - // Быстрая проверка из памяти - if (_fullyCachedCache.TryGetValue(cacheId, out bool cached) && cached) - return true; - - // Проверка с диска - var meta = TryGetMetadata(cacheId); - if (meta == null) return false; - - var cachePath = GetCachePath(cacheId); - if (!File.Exists(cachePath)) return false; - - var ranges = RangeMap.Deserialize(meta.RangesJson); - bool isFull = ranges.IsFullyDownloaded(meta.ContentLength); - - if (isFull) - _fullyCachedCache[cacheId] = true; - - return isFull; - } - - /// - /// Проверяет, был ли кэш уже промоутнут в Downloads. - /// - public bool IsPromoted(string cacheId) => - _promotedCache.TryGetValue(cacheId, out bool promoted) && promoted; - - /// - /// Проверяет, скачан ли конкретный формат. - /// - public bool IsFormatCached(string trackId, string container, int bitrate) - { - // Проверяем основной кэш - if (IsFullyCached(trackId)) - { - var meta = TryGetMetadata(trackId); - if (meta != null && - string.Equals(meta.Container, container, StringComparison.OrdinalIgnoreCase) && - meta.Bitrate == bitrate) - return true; - } - - // Проверяем кэш с суффиксом формата - string cacheId = $"{trackId}_{container}_{bitrate}"; - return IsFullyCached(cacheId); - } - - /// - /// Возвращает список закэшированных форматов для трека. - /// - public List<(string Container, int Bitrate)> GetCachedFormats(string trackId) - { - var result = new List<(string, int)>(); - - // Проверяем основной кэш - var baseMeta = TryGetMetadata(trackId); - if (baseMeta != null && !string.IsNullOrEmpty(baseMeta.Container)) - { - var ranges = RangeMap.Deserialize(baseMeta.RangesJson); - if (ranges.IsFullyDownloaded(baseMeta.ContentLength)) - result.Add((baseMeta.Container, baseMeta.Bitrate)); - } - - // Можно добавить сканирование форматов с суффиксами если нужно - - return result; - } - - /// - /// Обновляет IsCached для треков на основе состояния кэша. - /// Вызывается при загрузке списка треков. - /// - public void HydrateCacheStatus(IEnumerable tracks) - { - foreach (var track in tracks) - { - if (track.IsDownloaded) continue; // Скачанные не трогаем - - bool isCached = IsFullyCached(track.Id); - if (isCached != track.IsCached) - { - track.IsCached = isCached; - - if (isCached) - { - var meta = TryGetMetadata(track.Id); - if (meta != null) - { - if (!string.IsNullOrEmpty(meta.Container)) - track.PreferredContainer = meta.Container; - if (meta.Bitrate > 0) - track.PreferredBitrate = meta.Bitrate; - } - } - } - } - } - - #endregion - - #region Metadata Operations - - public static string GetCachePath(string cacheId) - { - var safeId = GetSafeFileName(cacheId); - return Path.Combine(G.Folder.StreamCache, $"{safeId}.cache"); - } - - public static string GetMetaPath(string cacheId) - { - var safeId = GetSafeFileName(cacheId); - return Path.Combine(G.Folder.StreamCache, $"{safeId}.meta"); - } - - public static StreamCacheMetadata? TryGetMetadata(string cacheId) - { - var metaPath = GetMetaPath(cacheId); - if (!File.Exists(metaPath)) return null; - try - { - var json = File.ReadAllText(metaPath); - return JsonSerializer.Deserialize(json, AppJsonContext.DefaultCompact.StreamCacheMetadata); - } - catch { return null; } - } - - public static StreamCacheMetadata LoadOrCreateMetadata(string cacheId, string url, long contentLength) - { - var meta = TryGetMetadata(cacheId); - - if (meta != null && meta.ContentLength == contentLength) - { - meta.LastAccessedAt = DateTime.UtcNow; - meta.SourceUrl = url; - SaveMetadata(cacheId, meta); - return meta; - } - - // Сохраняем codec/bitrate из старых метаданных если были - string existingCodec = meta?.Codec ?? ""; - int existingBitrate = meta?.Bitrate ?? 0; - string existingContainer = meta?.Container ?? ""; - - var newMeta = new StreamCacheMetadata - { - TrackId = cacheId, - SourceUrl = url, - ContentLength = contentLength, - CreatedAt = DateTime.UtcNow, - LastAccessedAt = DateTime.UtcNow, - RangesJson = "[]", - Codec = existingCodec, - Bitrate = existingBitrate, - Container = existingContainer - }; - - var cachePath = GetCachePath(cacheId); - if (File.Exists(cachePath)) - try { File.Delete(cachePath); } catch { } - - SaveMetadata(cacheId, newMeta); - Log.Debug($"[StreamCache] Created metadata for {cacheId}: {contentLength} bytes"); - - return newMeta; - } - - public static void SaveMetadata(string cacheId, StreamCacheMetadata meta) - { - try - { - var metaPath = GetMetaPath(cacheId); - var json = JsonSerializer.Serialize(meta, AppJsonContext.DefaultCompact.StreamCacheMetadata); - File.WriteAllText(metaPath, json); - } - catch { } - } - - public static void UpdateRanges(string cacheId, RangeMap ranges) - { - var meta = TryGetMetadata(cacheId); - if (meta != null) - { - meta.RangesJson = ranges.Serialize(); - meta.LastAccessedAt = DateTime.UtcNow; - SaveMetadata(cacheId, meta); - } - } - - public static void UpdateStreamInfo(string cacheId, string codec, int bitrate, string container) - { - var meta = TryGetMetadata(cacheId); - - if (meta == null) - { - // Создаём новые метаданные если их нет - meta = new StreamCacheMetadata - { - TrackId = cacheId, - CreatedAt = DateTime.UtcNow, - LastAccessedAt = DateTime.UtcNow, - RangesJson = "[]" - }; - } - - meta.Codec = codec; - meta.Bitrate = bitrate; - meta.Container = container; - meta.LastAccessedAt = DateTime.UtcNow; - - SaveMetadata(cacheId, meta); - - Log.Debug($"[StreamCache] UpdateStreamInfo: {cacheId} → {codec}/{bitrate}kbps/{container}"); - } - - #endregion - - #region Statistics & Cleanup - - /// - /// Возвращает статистику StreamCache. - /// - public static (int FileCount, long SizeMb) GetStats() - { - try - { - var cacheDir = G.Folder.StreamCache; - if (!Directory.Exists(cacheDir)) return (0, 0); - - var files = Directory.GetFiles(cacheDir, "*.cache"); - long totalSize = files.Sum(f => new FileInfo(f).Length); - - return (files.Length, totalSize / 1024 / 1024); - } - catch - { - return (0, 0); - } - } - - /// - /// Возвращает статистику папки Downloads. - /// - public static (int FileCount, long SizeMb) GetDownloadsStats() - { - try - { - var downloadsDir = G.Folder.Downloads; - if (!Directory.Exists(downloadsDir)) return (0, 0); - - var files = Directory.GetFiles(downloadsDir); - long totalSize = files.Sum(f => new FileInfo(f).Length); - - return (files.Length, totalSize / 1024 / 1024); - } - catch - { - return (0, 0); - } - } - - /// - /// Очищает весь StreamCache. - /// - public async Task ClearAllAsync() - { - await _cleanupLock.WaitAsync(); - try - { - var cacheDir = G.Folder.StreamCache; - if (!Directory.Exists(cacheDir)) return; - - foreach (var file in Directory.GetFiles(cacheDir)) - { - try { File.Delete(file); } catch { } - } - - _fullyCachedCache.Clear(); - _promotedCache.Clear(); - - Log.Info("[StreamCache] All cache cleared"); - } - finally - { - _cleanupLock.Release(); - } - } - - /// - /// Очищает папку Downloads. - /// - public async Task ClearDownloadsAsync() - { - try - { - var downloadsDir = G.Folder.Downloads; - if (!Directory.Exists(downloadsDir)) return; - - foreach (var file in Directory.GetFiles(downloadsDir)) - { - try { File.Delete(file); } catch { } - } - - Log.Info("[StreamCache] All downloads cleared"); - } - catch (Exception ex) - { - Log.Error($"[StreamCache] ClearDownloads error: {ex.Message}"); - } - } - - /// - /// Автоматическая очистка старых файлов кэша. - /// - private async Task CleanupOldCacheAsync() - { - if (!await _cleanupLock.WaitAsync(0)) return; - - try - { - var cacheDir = G.Folder.StreamCache; - if (!Directory.Exists(cacheDir)) return; - - var files = Directory.GetFiles(cacheDir, "*.cache") - .Select(f => new FileInfo(f)).ToList(); - - long totalSize = files.Sum(f => f.Length); - long maxBytes = (long)_library.Settings.Storage.AudioCacheLimitMb * 1024 * 1024; - - if (totalSize <= maxBytes) return; - - Log.Info($"[StreamCache] Cleanup: {totalSize / 1024 / 1024}MB > {maxBytes / 1024 / 1024}MB limit"); - - // Сортируем по времени последнего доступа - var toDelete = files - .OrderBy(f => f.LastAccessTime) - .TakeWhile(f => - { - if (totalSize <= maxBytes * 0.7) return false; - totalSize -= f.Length; - return true; - }) - .ToList(); - - foreach (var f in toDelete) - { - try - { - f.Delete(); - var metaPath = Path.ChangeExtension(f.FullName, ".meta"); - if (File.Exists(metaPath)) File.Delete(metaPath); - } - catch { } - } - - Log.Info($"[StreamCache] Deleted {toDelete.Count} old files"); - } - finally - { - _cleanupLock.Release(); - } - } - - #endregion - - #region Helpers - - private void NotifyFormatCached(string trackId, string container, int bitrate, bool isCached) - { - try - { - if (Avalonia.Threading.Dispatcher.UIThread.CheckAccess()) - OnFormatCached?.Invoke(trackId, container, bitrate, isCached); - else - Avalonia.Threading.Dispatcher.UIThread.Post(() => - OnFormatCached?.Invoke(trackId, container, bitrate, isCached)); - } - catch (Exception ex) - { - Log.Warn($"[StreamCache] NotifyFormatCached error: {ex.Message}"); - } - } - - private static string ExtractTrackId(string cacheId) - { - var parts = cacheId.Split('_'); - if (parts.Length >= 3 && int.TryParse(parts[^1], out _) && IsKnownContainer(parts[^2])) - return string.Join('_', parts[..^2]); - return cacheId; - } - - private static bool IsKnownContainer(string s) => - s is "m4a" or "opus" or "webm" or "mp3" or "ogg" or "aac" or "flac" or "mp4"; - - private static string SanitizeFileName(string name) - { - var invalid = Path.GetInvalidFileNameChars(); - var sanitized = string.Join("_", name.Split(invalid, StringSplitOptions.RemoveEmptyEntries)).Trim(); - return sanitized.Length > 200 ? sanitized[..200] : sanitized; - } - - private static string GetSafeFileName(string id) - { - var bytes = SHA256.HashData(Encoding.UTF8.GetBytes(id)); - return Convert.ToHexString(bytes)[..32]; - } - - public void Dispose() - { - _cleanupLock.Dispose(); - _promoteLock.Dispose(); - GC.SuppressFinalize(this); - } - - #endregion -} \ No newline at end of file diff --git a/Core/Services/StreamingProfiles.cs b/Core/Services/StreamingProfiles.cs new file mode 100644 index 0000000..76c7ce1 --- /dev/null +++ b/Core/Services/StreamingProfiles.cs @@ -0,0 +1,314 @@ +using LMP.Core.Models; + +namespace LMP.Core.Services; + +/// +/// Фабрика профилей стриминга для разных условий сети и устройства. +/// Приоритеты: быстрый старт → минимальный трафик → стабильность. +/// +public static class StreamingProfiles +{ + #region Profile Constants + + /// + /// Профиль ЭКОНОМИИ ТРАФИКА. + /// Мгновенный старт, качает только ~10 секунд вперёд. + /// Идеален для мобильного интернета и лимитированных тарифов. + /// + private static class LowProfile + { + // Маленькие чанки = быстрый старт + меньше потерь при перемотке + public const int ChunkSizeBytes = 32 * 1024; // 32 KB - очень маленькие + public const int ReadAheadChunks = 1; // Минимум + public const int MaxRamChunks = 200; // Много мелких чанков в RAM + + // Минимум параллельных загрузок - не забиваем канал + public const int MaxConcurrentDownloads = 2; + public const int DownloadTimeoutMs = 30_000; + public const int MaxRetries = 2; + public const int RetryDelayMs = 500; + + // Минимальный буфер VLC - быстрый старт важнее + public const int VlcNetworkCachingMs = 500; + + // МГНОВЕННЫЙ старт - только 1 чанк для начала + public const int InitialBufferSeconds = 1; + public const int InitialReadAheadChunks = 1; + public const int HeaderChunks = 2; // Минимум для парсинга + public const int TailChunks = 2; // Минимум для cues + + // СТРОЖАЙШИЙ throttling - качаем только ~10 секунд вперёд + // При 128kbps: 10 сек = ~160KB = ~5 чанков по 32KB + public const int MaxReadAheadFromPlayback = 3; // VLC читает на 3 чанка вперёд + public const int MaxDownloadAheadChunks = 5; // Качаем только 5 чанков (~10 сек) + public const int ChunksToKeepBehind = 1; // Минимум позади + + // Редко расширяем - экономим CPU и сеть + public const int BufferExtendIntervalMs = 2000; + public const int SaveThresholdBytes = 32 * 1024; + } + + /// + /// СБАЛАНСИРОВАННЫЙ профиль (по умолчанию). + /// Быстрый старт, качает ~30 секунд вперёд. + /// Оптимален для обычного домашнего интернета. + /// + private static class MediumProfile + { + public const int ChunkSizeBytes = 128 * 1024; // 128 KB + public const int ReadAheadChunks = 2; + public const int MaxRamChunks = 100; + + public const int MaxConcurrentDownloads = 3; + public const int DownloadTimeoutMs = 30_000; + public const int MaxRetries = 2; + public const int RetryDelayMs = 400; + + // Небольшой буфер VLC + public const int VlcNetworkCachingMs = 1000; + + // Быстрый старт - 2 секунды prebuffer + public const int InitialBufferSeconds = 2; + public const int InitialReadAheadChunks = 2; + public const int HeaderChunks = 3; + public const int TailChunks = 2; + + // Умеренный буфер - ~30 секунд вперёд + // При 128kbps: 30 сек = ~480KB = ~4 чанка по 128KB + public const int MaxReadAheadFromPlayback = 4; + public const int MaxDownloadAheadChunks = 6; // ~45 сек запас + public const int ChunksToKeepBehind = 2; + + public const int BufferExtendIntervalMs = 1000; + public const int SaveThresholdBytes = 64 * 1024; + } + + /// + /// Профиль ВЫСОКОГО КАЧЕСТВА. + /// Быстрый старт, качает ~1.5 минуты вперёд. + /// Для стабильного быстрого интернета. + /// + private static class HighProfile + { + public const int ChunkSizeBytes = 256 * 1024; // 256 KB + public const int ReadAheadChunks = 3; + public const int MaxRamChunks = 80; + + public const int MaxConcurrentDownloads = 4; + public const int DownloadTimeoutMs = 25_000; + public const int MaxRetries = 2; + public const int RetryDelayMs = 300; + + public const int VlcNetworkCachingMs = 800; + + // Быстрый старт - 3 секунды + public const int InitialBufferSeconds = 3; + public const int InitialReadAheadChunks = 2; + public const int HeaderChunks = 3; + public const int TailChunks = 2; + + // Комфортный буфер - ~1.5 минуты вперёд + // При 128kbps: 90 сек = ~1440KB = ~6 чанков по 256KB + public const int MaxReadAheadFromPlayback = 6; + public const int MaxDownloadAheadChunks = 8; // ~2 мин запас + public const int ChunksToKeepBehind = 2; + + public const int BufferExtendIntervalMs = 500; + public const int SaveThresholdBytes = 128 * 1024; + } + + /// + /// Профиль МАКСИМАЛЬНОГО кэширования. + /// Быстрый старт, качает ~5 минут вперёд. + /// Для локальной сети или гигабитного интернета. + /// + private static class UltraProfile + { + public const int ChunkSizeBytes = 512 * 1024; // 512 KB + public const int ReadAheadChunks = 5; + public const int MaxRamChunks = 60; + + public const int MaxConcurrentDownloads = 6; + public const int DownloadTimeoutMs = 20_000; + public const int MaxRetries = 1; + public const int RetryDelayMs = 200; + + public const int VlcNetworkCachingMs = 500; + + // Быстрый старт - 4 секунды + public const int InitialBufferSeconds = 4; + public const int InitialReadAheadChunks = 3; + public const int HeaderChunks = 3; + public const int TailChunks = 3; + + // Большой буфер - ~5 минут вперёд + // При 128kbps: 300 сек = ~4800KB = ~10 чанков по 512KB + public const int MaxReadAheadFromPlayback = 10; + public const int MaxDownloadAheadChunks = 15; // ~7.5 мин запас + public const int ChunksToKeepBehind = 3; + + public const int BufferExtendIntervalMs = 300; + public const int SaveThresholdBytes = 256 * 1024; + } + + #endregion + + #region Factory + + /// + /// Получает конфигурацию стриминга для указанного профиля. + /// + public static StreamingConfig GetConfig(InternetProfile profile) => profile switch + { + InternetProfile.Low => CreateLowConfig(), + InternetProfile.Medium => CreateMediumConfig(), + InternetProfile.High => CreateHighConfig(), + InternetProfile.Ultra => CreateUltraConfig(), + _ => CreateMediumConfig() + }; + + private static StreamingConfig CreateLowConfig() => new() + { + ChunkSizeBytes = LowProfile.ChunkSizeBytes, + ReadAheadChunks = LowProfile.ReadAheadChunks, + MaxRamChunks = LowProfile.MaxRamChunks, + MaxConcurrentDownloads = LowProfile.MaxConcurrentDownloads, + DownloadTimeoutMs = LowProfile.DownloadTimeoutMs, + MaxRetries = LowProfile.MaxRetries, + RetryDelayMs = LowProfile.RetryDelayMs, + DownloadFullTrack = false, + VlcNetworkCachingMs = LowProfile.VlcNetworkCachingMs, + InitialBufferSeconds = LowProfile.InitialBufferSeconds, + InitialReadAheadChunks = LowProfile.InitialReadAheadChunks, + HeaderChunks = LowProfile.HeaderChunks, + TailChunks = LowProfile.TailChunks, + MaxReadAheadFromPlayback = LowProfile.MaxReadAheadFromPlayback, + MaxDownloadAheadChunks = LowProfile.MaxDownloadAheadChunks, + ChunksToKeepBehind = LowProfile.ChunksToKeepBehind, + BufferExtendIntervalMs = LowProfile.BufferExtendIntervalMs, + SaveThresholdBytes = LowProfile.SaveThresholdBytes + }; + + private static StreamingConfig CreateMediumConfig() => new() + { + ChunkSizeBytes = MediumProfile.ChunkSizeBytes, + ReadAheadChunks = MediumProfile.ReadAheadChunks, + MaxRamChunks = MediumProfile.MaxRamChunks, + MaxConcurrentDownloads = MediumProfile.MaxConcurrentDownloads, + DownloadTimeoutMs = MediumProfile.DownloadTimeoutMs, + MaxRetries = MediumProfile.MaxRetries, + RetryDelayMs = MediumProfile.RetryDelayMs, + DownloadFullTrack = false, + VlcNetworkCachingMs = MediumProfile.VlcNetworkCachingMs, + InitialBufferSeconds = MediumProfile.InitialBufferSeconds, + InitialReadAheadChunks = MediumProfile.InitialReadAheadChunks, + HeaderChunks = MediumProfile.HeaderChunks, + TailChunks = MediumProfile.TailChunks, + MaxReadAheadFromPlayback = MediumProfile.MaxReadAheadFromPlayback, + MaxDownloadAheadChunks = MediumProfile.MaxDownloadAheadChunks, + ChunksToKeepBehind = MediumProfile.ChunksToKeepBehind, + BufferExtendIntervalMs = MediumProfile.BufferExtendIntervalMs, + SaveThresholdBytes = MediumProfile.SaveThresholdBytes + }; + + private static StreamingConfig CreateHighConfig() => new() + { + ChunkSizeBytes = HighProfile.ChunkSizeBytes, + ReadAheadChunks = HighProfile.ReadAheadChunks, + MaxRamChunks = HighProfile.MaxRamChunks, + MaxConcurrentDownloads = HighProfile.MaxConcurrentDownloads, + DownloadTimeoutMs = HighProfile.DownloadTimeoutMs, + MaxRetries = HighProfile.MaxRetries, + RetryDelayMs = HighProfile.RetryDelayMs, + DownloadFullTrack = false, + VlcNetworkCachingMs = HighProfile.VlcNetworkCachingMs, + InitialBufferSeconds = HighProfile.InitialBufferSeconds, + InitialReadAheadChunks = HighProfile.InitialReadAheadChunks, + HeaderChunks = HighProfile.HeaderChunks, + TailChunks = HighProfile.TailChunks, + MaxReadAheadFromPlayback = HighProfile.MaxReadAheadFromPlayback, + MaxDownloadAheadChunks = HighProfile.MaxDownloadAheadChunks, + ChunksToKeepBehind = HighProfile.ChunksToKeepBehind, + BufferExtendIntervalMs = HighProfile.BufferExtendIntervalMs, + SaveThresholdBytes = HighProfile.SaveThresholdBytes + }; + + private static StreamingConfig CreateUltraConfig() => new() + { + ChunkSizeBytes = UltraProfile.ChunkSizeBytes, + ReadAheadChunks = UltraProfile.ReadAheadChunks, + MaxRamChunks = UltraProfile.MaxRamChunks, + MaxConcurrentDownloads = UltraProfile.MaxConcurrentDownloads, + DownloadTimeoutMs = UltraProfile.DownloadTimeoutMs, + MaxRetries = UltraProfile.MaxRetries, + RetryDelayMs = UltraProfile.RetryDelayMs, + DownloadFullTrack = false, + VlcNetworkCachingMs = UltraProfile.VlcNetworkCachingMs, + InitialBufferSeconds = UltraProfile.InitialBufferSeconds, + InitialReadAheadChunks = UltraProfile.InitialReadAheadChunks, + HeaderChunks = UltraProfile.HeaderChunks, + TailChunks = UltraProfile.TailChunks, + MaxReadAheadFromPlayback = UltraProfile.MaxReadAheadFromPlayback, + MaxDownloadAheadChunks = UltraProfile.MaxDownloadAheadChunks, + ChunksToKeepBehind = UltraProfile.ChunksToKeepBehind, + BufferExtendIntervalMs = UltraProfile.BufferExtendIntervalMs, + SaveThresholdBytes = UltraProfile.SaveThresholdBytes + }; + + #endregion + + #region Helpers + + /// + /// Вычисляет примерное количество чанков для указанного времени. + /// + public static int SecondsToChunks(StreamingConfig config, int seconds, int bitrateKbps = 128) + { + if (bitrateKbps <= 0) bitrateKbps = 128; + var bytesPerSecond = bitrateKbps * 1000 / 8; + var totalBytes = bytesPerSecond * seconds; + return Math.Max(1, (int)Math.Ceiling((double)totalBytes / config.ChunkSizeBytes)); + } + + /// + /// Вычисляет примерное время буфера в секундах. + /// + public static int EstimatedBufferSeconds(StreamingConfig config, int bitrateKbps = 128) + { + if (bitrateKbps <= 0) bitrateKbps = 128; + var bytesPerSecond = bitrateKbps * 1000 / 8; + var bufferBytes = config.MaxDownloadAheadChunks * config.ChunkSizeBytes; + return (int)(bufferBytes / bytesPerSecond); + } + + /// + /// Вычисляет объём RAM для буферов при текущих настройках. + /// + public static int EstimatedRamUsageMb(StreamingConfig config) => + config.MaxRamChunks * config.ChunkSizeBytes / (1024 * 1024); + + /// + /// Возвращает читабельное описание профиля. + /// + public static string GetProfileDescription(InternetProfile profile) => profile switch + { + InternetProfile.Low => "Экономия трафика (~10 сек буфер)", + InternetProfile.Medium => "Сбалансированный (~30 сек буфер)", + InternetProfile.High => "Высокое качество (~1.5 мин буфер)", + InternetProfile.Ultra => "Максимальный (~5 мин буфер)", + _ => "Неизвестный профиль" + }; + + /// + /// Возвращает рекомендуемый профиль на основе скорости интернета. + /// + public static InternetProfile GetRecommendedProfile(double speedMbps) => speedMbps switch + { + < 1 => InternetProfile.Low, + < 5 => InternetProfile.Medium, + < 25 => InternetProfile.High, + _ => InternetProfile.Ultra + }; + + #endregion +} \ No newline at end of file diff --git a/Core/Services/ThemeManagerService.cs b/Core/Services/ThemeManagerService.cs index 52727c6..f8eb59d 100644 --- a/Core/Services/ThemeManagerService.cs +++ b/Core/Services/ThemeManagerService.cs @@ -109,8 +109,13 @@ public void LoadAndApplyThemeOnStartup() /// public void ApplyTheme(ThemeSettings theme) { + // ═══ ЗАЩИТА: проверка готовности Application ═══ if (Application.Current?.Resources is not { } resources) + { + Log.Warn("Application.Current.Resources not available yet, deferring theme application"); + _cachedTheme = theme; // Сохраняем для повторной попытки return; + } _cachedTheme = theme; @@ -140,6 +145,21 @@ public void ApplyTheme(ThemeSettings theme) SetColor(resources, "TextMuted", theme.TextMuted); SetColor(resources, "TextDark", theme.TextDark); + // ═══ КОНТРАСТНЫЙ ТЕКСТ ДЛЯ ACCENT КНОПОК ═══ + // Автоматически определяем чёрный или белый текст на акцентном фоне + _ = TryParseColor(theme.AccentColor, out var accent); + var accentButtonText = GetContrastingTextColor(accent); + + // Полный цвет + resources["AccentButtonText"] = accentButtonText; + resources["AccentButtonTextBrush"] = new SolidColorBrush(accentButtonText); + + // Прозрачная версия для плавных анимаций border (тот же RGB, альфа = 0) + // Предотвращает белые вспышки при BrushTransition от/к "невидимому" состоянию + var accentButtonTextTransparent = new Color(0, accentButtonText.R, accentButtonText.G, accentButtonText.B); + resources["AccentButtonTextTransparent"] = accentButtonTextTransparent; + resources["AccentButtonTextTransparentBrush"] = new SolidColorBrush(accentButtonTextTransparent); + // ═══ AVALONIA FLUENT THEME COMPATIBILITY ═══ // Переопределяем системные ресурсы для корректной работы стандартных контролов ApplyFluentOverrides(resources, theme); @@ -148,7 +168,37 @@ public void ApplyTheme(ThemeSettings theme) } /// - /// Применяет переопределения для Fluent темы Avalonia + /// Определяет контрастный цвет текста для данного фона. + /// Использует формулу относительной яркости WCAG 2.0. + /// + /// Цвет фона + /// Чёрный или белый цвет, обеспечивающий максимальный контраст + private static Color GetContrastingTextColor(Color background) + { + // Линеаризация sRGB канала по WCAG 2.0 + double Linearize(byte channel) + { + var s = channel / 255.0; + return s <= 0.03928 ? s / 12.92 : Math.Pow((s + 0.055) / 1.055, 2.4); + } + + var luminance = 0.2126 * Linearize(background.R) + + 0.7152 * Linearize(background.G) + + 0.0722 * Linearize(background.B); + + // Порог 0.35 — оптимален для тёмных тем, обеспечивает читаемость + return luminance > 0.35 + ? Color.FromRgb(0, 0, 0) // Тёмный текст на светлом фоне + : Color.FromRgb(255, 255, 255); // Светлый текст на тёмном фоне + } + + /// + /// Применяет переопределения для Fluent темы Avalonia. + /// Необходимо для корректной работы стандартных контролов (CheckBox, ToggleSwitch, + /// ComboBox, Slider, диалоговые окна и т.д.) с кастомными цветами темы. + /// + /// ВАЖНО: AccentButton* ресурсы используют accentButtonText для foreground, + /// что гарантирует контрастность на ЛЮБОЙ теме (включая AMOLED с белым акцентом). /// private static void ApplyFluentOverrides(IResourceDictionary resources, ThemeSettings theme) { @@ -164,20 +214,23 @@ private static void ApplyFluentOverrides(IResourceDictionary resources, ThemeSet _ = TryParseColor(theme.BgHover, out var bgHover); _ = TryParseColor(theme.TextMuted, out var textMuted); + // Контрастный текст для акцентных элементов + var accentButtonText = GetContrastingTextColor(accent); + // ═══ SYSTEM ACCENT COLORS ═══ resources["SystemAccentColor"] = accent; - resources["SystemAccentColorDark1"] = accent; - resources["SystemAccentColorDark2"] = accent; - resources["SystemAccentColorDark3"] = accent; + resources["SystemAccentColorDark1"] = accentHover; + resources["SystemAccentColorDark2"] = accentHover; + resources["SystemAccentColorDark3"] = accentHover; resources["SystemAccentColorLight1"] = accentHover; resources["SystemAccentColorLight2"] = accentHover; resources["SystemAccentColorLight3"] = accentHover; - // ═══ TEXT ON ACCENT (критично для контраста!) ═══ - resources["TextOnAccentFillColorPrimary"] = textDark; - resources["TextOnAccentFillColorSecondary"] = textDark; + // ═══ TEXT ON ACCENT (для CheckBox, ToggleSwitch, диалоговых кнопок) ═══ + resources["TextOnAccentFillColorPrimary"] = accentButtonText; + resources["TextOnAccentFillColorSecondary"] = accentButtonText; resources["TextOnAccentFillColorDisabled"] = textSecondary; - resources["TextOnAccentFillColorSelectedText"] = textDark; + resources["TextOnAccentFillColorSelectedText"] = accentButtonText; // ═══ GENERAL TEXT ═══ resources["TextFillColorPrimary"] = textPrimary; @@ -203,58 +256,102 @@ private static void ApplyFluentOverrides(IResourceDictionary resources, ThemeSet resources["SubtleFillColorTertiary"] = bgHighlight; resources["SubtleFillColorDisabled"] = Colors.Transparent; - // ═══ ACCENT BUTTON (Button.accent, primary buttons) ═══ + // ═══ ACCENT FILLS — для системных контролов ═══ resources["AccentFillColorDefaultBrush"] = new SolidColorBrush(accent); resources["AccentFillColorSecondary"] = accentHover; resources["AccentFillColorTertiary"] = accent; resources["AccentFillColorDisabled"] = bgHighlight; - // Текст на акцентных кнопках - resources["AccentButtonForeground"] = textDark; - resources["AccentButtonForegroundPointerOver"] = textDark; - resources["AccentButtonForegroundPressed"] = textDark; - resources["AccentButtonForegroundDisabled"] = textSecondary; - + // ═══ ACCENT BUTTON — для системных диалогов (ContentDialog) ═══ + // Foreground ВСЕГДА = accentButtonText, даже при PointerOver и Pressed resources["AccentButtonBackground"] = accent; - resources["AccentButtonBackgroundPointerOver"] = accentHover; - resources["AccentButtonBackgroundPressed"] = accent; + resources["AccentButtonBackgroundPointerOver"] = accent; + resources["AccentButtonBackgroundPressed"] = accentHover; resources["AccentButtonBackgroundDisabled"] = bgHighlight; + resources["AccentButtonForeground"] = accentButtonText; + resources["AccentButtonForegroundPointerOver"] = accentButtonText; + resources["AccentButtonForegroundPressed"] = accentButtonText; + resources["AccentButtonForegroundDisabled"] = textSecondary; + + resources["AccentButtonBorderBrush"] = Colors.Transparent; + resources["AccentButtonBorderBrushPointerOver"] = accentButtonText; + resources["AccentButtonBorderBrushPressed"] = Colors.Transparent; + resources["AccentButtonBorderBrushDisabled"] = Colors.Transparent; + // ═══ CHECKBOX ═══ - resources["CheckGlyphForeground"] = textDark; - resources["CheckGlyphForegroundChecked"] = textDark; - resources["CheckGlyphForegroundCheckedPointerOver"] = textDark; - resources["CheckGlyphForegroundCheckedPressed"] = textDark; + resources["CheckGlyphForeground"] = accentButtonText; + resources["CheckGlyphForegroundChecked"] = accentButtonText; + resources["CheckGlyphForegroundCheckedPointerOver"] = accentButtonText; + resources["CheckGlyphForegroundCheckedPressed"] = accentButtonText; resources["CheckGlyphForegroundCheckedDisabled"] = textSecondary; - resources["CheckGlyphForegroundIndeterminate"] = textDark; + resources["CheckGlyphForegroundIndeterminate"] = accentButtonText; + + // ═══ TOGGLESWITCH: убираем ВСЕ возможные фоны ═══ + // Основные контейнеры + resources["ToggleSwitchContainerBackground"] = Colors.Transparent; + resources["ToggleSwitchContainerBackgroundPointerOver"] = Colors.Transparent; + resources["ToggleSwitchContainerBackgroundPressed"] = Colors.Transparent; + resources["ToggleSwitchContainerBackgroundDisabled"] = Colors.Transparent; + + // Content Grid + resources["ToggleSwitchContentGridBackground"] = Colors.Transparent; + resources["ToggleSwitchContentGridBackgroundPointerOver"] = Colors.Transparent; + resources["ToggleSwitchContentGridBackgroundPressed"] = Colors.Transparent; + resources["ToggleSwitchContentGridBackgroundDisabled"] = Colors.Transparent; + + // Track background (область между knob) + resources["ToggleSwitchTrackBackground"] = Colors.Transparent; + resources["ToggleSwitchTrackBackgroundPointerOver"] = Colors.Transparent; + resources["ToggleSwitchTrackBackgroundPressed"] = Colors.Transparent; + resources["ToggleSwitchTrackBackgroundDisabled"] = Colors.Transparent; + + // Knob background (под самой ручкой) + resources["ToggleSwitchKnobBackground"] = Colors.Transparent; + resources["ToggleSwitchKnobBackgroundPointerOver"] = Colors.Transparent; + resources["ToggleSwitchKnobBackgroundPressed"] = Colors.Transparent; + resources["ToggleSwitchKnobBackgroundDisabled"] = Colors.Transparent; + + // Pill (переключатель) — OFF state + resources["ToggleSwitchFillOff"] = bgHighlight; + resources["ToggleSwitchFillOffPointerOver"] = bgHighlight; + resources["ToggleSwitchFillOffPressed"] = bgHighlight; + resources["ToggleSwitchFillOffDisabled"] = bgHighlight; - // ═══ TOGGLESWITCH ═══ - // Fill when ON + // Pill — ON state resources["ToggleSwitchFillOn"] = accent; - resources["ToggleSwitchFillOnPointerOver"] = accentHover; + resources["ToggleSwitchFillOnPointerOver"] = accent; resources["ToggleSwitchFillOnPressed"] = accent; resources["ToggleSwitchFillOnDisabled"] = bgHighlight; - // Fill when OFF - resources["ToggleSwitchFillOff"] = bgHighlight; - resources["ToggleSwitchFillOffPointerOver"] = bgHover; - resources["ToggleSwitchFillOffPressed"] = bgHighlight; + // Border stroke — OFF + resources["ToggleSwitchStrokeOff"] = bgHighlight; + resources["ToggleSwitchStrokeOffPointerOver"] = accent; + resources["ToggleSwitchStrokeOffPressed"] = accent; + resources["ToggleSwitchStrokeOffDisabled"] = bgHighlight; - // Knob (круглая ручка) - resources["ToggleSwitchKnobFillOn"] = textDark; - resources["ToggleSwitchKnobFillOnPointerOver"] = textDark; - resources["ToggleSwitchKnobFillOnPressed"] = textDark; - resources["ToggleSwitchKnobFillOnDisabled"] = textSecondary; + // Border stroke — ON + resources["ToggleSwitchStrokeOn"] = accent; + resources["ToggleSwitchStrokeOnPointerOver"] = accentHover; + resources["ToggleSwitchStrokeOnPressed"] = accent; + resources["ToggleSwitchStrokeOnDisabled"] = bgHighlight; + // Knob fill (сама ручка) resources["ToggleSwitchKnobFillOff"] = textSecondary; resources["ToggleSwitchKnobFillOffPointerOver"] = textPrimary; resources["ToggleSwitchKnobFillOffPressed"] = textSecondary; + resources["ToggleSwitchKnobFillOffDisabled"] = textSecondary; - // Stroke - resources["ToggleSwitchStrokeOn"] = accent; - resources["ToggleSwitchStrokeOnPointerOver"] = accentHover; - resources["ToggleSwitchStrokeOff"] = textMuted; - resources["ToggleSwitchStrokeOffPointerOver"] = textSecondary; + resources["ToggleSwitchKnobFillOn"] = accentButtonText; + resources["ToggleSwitchKnobFillOnPointerOver"] = accentButtonText; + resources["ToggleSwitchKnobFillOnPressed"] = accentButtonText; + resources["ToggleSwitchKnobFillOnDisabled"] = textSecondary; + + // Header и дополнительные элементы + resources["ToggleSwitchHeaderForeground"] = textPrimary; + resources["ToggleSwitchHeaderForegroundDisabled"] = textSecondary; + resources["ToggleSwitchOnContentForeground"] = textPrimary; + resources["ToggleSwitchOffContentForeground"] = textPrimary; // ═══ SLIDER ═══ resources["SliderTrackFill"] = bgHighlight; @@ -286,16 +383,14 @@ private static void ApplyFluentOverrides(IResourceDictionary resources, ThemeSet resources["ComboBoxDropDownBackground"] = bgElevated; resources["ComboBoxDropDownBorderBrush"] = bgHighlight; - // ComboBoxItem (элементы списка) resources["ComboBoxItemForeground"] = textPrimary; resources["ComboBoxItemForegroundPointerOver"] = textPrimary; resources["ComboBoxItemForegroundPressed"] = textPrimary; resources["ComboBoxItemForegroundDisabled"] = textSecondary; - // SELECTED ITEM - критично! - resources["ComboBoxItemForegroundSelected"] = textDark; - resources["ComboBoxItemForegroundSelectedPointerOver"] = textDark; - resources["ComboBoxItemForegroundSelectedPressed"] = textDark; + resources["ComboBoxItemForegroundSelected"] = accentButtonText; + resources["ComboBoxItemForegroundSelectedPointerOver"] = accentButtonText; + resources["ComboBoxItemForegroundSelectedPressed"] = accentButtonText; resources["ComboBoxItemForegroundSelectedDisabled"] = textSecondary; resources["ComboBoxItemBackgroundSelected"] = accent; @@ -304,8 +399,8 @@ private static void ApplyFluentOverrides(IResourceDictionary resources, ThemeSet // ═══ LISTBOX ═══ resources["ListBoxItemForeground"] = textPrimary; - resources["ListBoxItemForegroundSelected"] = textDark; - resources["ListBoxItemForegroundSelectedPointerOver"] = textDark; + resources["ListBoxItemForegroundSelected"] = accentButtonText; + resources["ListBoxItemForegroundSelectedPointerOver"] = accentButtonText; resources["ListBoxItemBackgroundSelected"] = accent; resources["ListBoxItemBackgroundSelectedPointerOver"] = accentHover; @@ -336,6 +431,111 @@ private static void ApplyFluentOverrides(IResourceDictionary resources, ThemeSet resources["MenuFlyoutItemBackgroundPointerOver"] = bgHighlight; resources["MenuFlyoutItemForeground"] = textPrimary; resources["MenuFlyoutItemForegroundPointerOver"] = textPrimary; + + // ═══ BUTTON — обычные кнопки ═══ + // Foreground фиксируется для всех состояний = textPrimary + resources["ButtonBackground"] = bgElevated; + resources["ButtonBackgroundPointerOver"] = bgElevated; + resources["ButtonBackgroundPressed"] = bgHighlight; + resources["ButtonBackgroundDisabled"] = bgHighlight; + + resources["ButtonForeground"] = textPrimary; + resources["ButtonForegroundPointerOver"] = textPrimary; + resources["ButtonForegroundPressed"] = textPrimary; + resources["ButtonForegroundDisabled"] = textSecondary; + + resources["ButtonBorderBrush"] = bgHighlight; + resources["ButtonBorderBrushPointerOver"] = accent; + resources["ButtonBorderBrushPressed"] = accentHover; + resources["ButtonBorderBrushDisabled"] = bgHighlight; + + // ═══ CONTENT DIALOG ═══ + resources["ContentDialogBackground"] = bgElevated; + resources["ContentDialogTopOverlay"] = bgElevated; + resources["ContentDialogBorderBrush"] = bgHighlight; + resources["ContentDialogForeground"] = textPrimary; + + // ═══ ANTI-FLASH: Fluent hover → border вместо фона ═══ + + // ComboBox: hover = border, не фон + resources["ComboBoxBackgroundPointerOver"] = bgElevated; + resources["ComboBoxBackgroundPressed"] = bgElevated; + resources["ComboBoxBorderBrushPointerOver"] = accent; + + // ComboBoxItem: border прозрачный по умолчанию, виден при hover + var bgHighlightTransparent = new Color(0, bgHighlight.R, bgHighlight.G, bgHighlight.B); + resources["ComboBoxItemBackgroundPointerOver"] = Colors.Transparent; + resources["ComboBoxItemBackgroundPressed"] = Colors.Transparent; + resources["ComboBoxItemBorderBrush"] = bgHighlightTransparent; + resources["ComboBoxItemBorderBrushPointerOver"] = bgHighlight; + resources["ComboBoxItemBorderBrushPressed"] = bgHighlight; + resources["ComboBoxItemBorderBrushSelected"] = accent; + resources["ComboBoxItemBorderBrushSelectedPointerOver"] = accentHover; + + // CheckBox: hover фон не меняется, border = акцент + resources["CheckBoxCheckBackgroundFillUnchecked"] = bgElevated; + resources["CheckBoxCheckBackgroundFillUncheckedPointerOver"] = bgElevated; + resources["CheckBoxCheckBackgroundFillUncheckedPressed"] = bgElevated; + resources["CheckBoxCheckBackgroundFillChecked"] = accent; + resources["CheckBoxCheckBackgroundFillCheckedPointerOver"] = accent; + resources["CheckBoxCheckBackgroundFillCheckedPressed"] = accent; + + resources["CheckBoxCheckBackgroundStrokeUnchecked"] = bgHighlight; + resources["CheckBoxCheckBackgroundStrokeUncheckedPointerOver"] = accent; + resources["CheckBoxCheckBackgroundStrokeUncheckedPressed"] = accent; + resources["CheckBoxCheckBackgroundStrokeChecked"] = accent; + resources["CheckBoxCheckBackgroundStrokeCheckedPointerOver"] = accentHover; + resources["CheckBoxCheckBackgroundStrokeCheckedPressed"] = accent; + + // RadioButton: контейнер без фона + resources["RadioButtonBackground"] = Colors.Transparent; + resources["RadioButtonBackgroundPointerOver"] = Colors.Transparent; + resources["RadioButtonBackgroundPressed"] = Colors.Transparent; + resources["RadioButtonBackgroundDisabled"] = Colors.Transparent; + + // RadioButton: hover фон эллипса не меняется + resources["RadioButtonOuterEllipseFill"] = bgElevated; + resources["RadioButtonOuterEllipseFillPointerOver"] = bgElevated; + resources["RadioButtonOuterEllipseFillPressed"] = bgElevated; + resources["RadioButtonOuterEllipseStroke"] = bgHighlight; + resources["RadioButtonOuterEllipseStrokePointerOver"] = accent; + resources["RadioButtonOuterEllipseStrokePressed"] = accent; + + resources["RadioButtonOuterEllipseCheckedFill"] = bgElevated; + resources["RadioButtonOuterEllipseCheckedFillPointerOver"] = bgElevated; + resources["RadioButtonOuterEllipseCheckedFillPressed"] = bgElevated; + resources["RadioButtonOuterEllipseCheckedStroke"] = accent; + resources["RadioButtonOuterEllipseCheckedStrokePointerOver"] = accentHover; + resources["RadioButtonOuterEllipseCheckedStrokePressed"] = accent; + + // ToggleSwitch: hover = border, не фон + resources["ToggleSwitchContainerBackground"] = bgHighlight; + resources["ToggleSwitchContainerBackgroundPointerOver"] = bgHighlight; + resources["ToggleSwitchContainerBackgroundPressed"] = bgHighlight; + + // ListBoxItem: hover = border, не фон + resources["ListBoxItemBackgroundPointerOver"] = Colors.Transparent; + resources["ListBoxItemBackgroundPressed"] = Colors.Transparent; + resources["ListBoxItemBackgroundSelected"] = accent; + resources["ListBoxItemBackgroundSelectedPointerOver"] = accent; + resources["ListBoxItemBackgroundSelectedPressed"] = accent; + resources["ListBoxItemBorderBrush"] = bgHighlightTransparent; + resources["ListBoxItemBorderBrushPointerOver"] = bgHighlight; + + // Slider thumb + resources["SliderThumbBackground"] = textPrimary; + resources["SliderThumbBackgroundPointerOver"] = accent; + resources["SliderThumbBackgroundPressed"] = accentHover; + + // MenuItem: hover = border + resources["MenuFlyoutItemBackgroundPointerOver"] = Colors.Transparent; + resources["MenuFlyoutItemBackgroundPressed"] = Colors.Transparent; + + // FOCUS VISUAL + resources["SystemControlFocusVisualPrimaryBrush"] = new SolidColorBrush(accent) { Opacity = 0.85 }; + resources["SystemControlFocusVisualSecondaryBrush"] = new SolidColorBrush(Colors.Transparent); + resources["SystemControlFocusVisualPrimaryThickness"] = new Thickness(2); + resources["SystemControlFocusVisualSecondaryThickness"] = new Thickness(0); } /// @@ -346,7 +546,7 @@ public void SaveTheme(ThemeSettings theme) try { var json = JsonSerializer.Serialize(theme, G.Json.Beautiful); - File.WriteAllText(G.File.Theme, json); + File.WriteAllText(G.FilePath.Theme, json); _cachedTheme = theme; Log.Info($"Theme '{theme.Name}' saved."); } @@ -376,8 +576,8 @@ public void ResetToDefault() { try { - if (File.Exists(G.File.Theme)) - File.Delete(G.File.Theme); + if (File.Exists(G.FilePath.Theme)) + File.Delete(G.FilePath.Theme); } catch { /* Игнорируем ошибку удаления */ } @@ -408,11 +608,11 @@ public static IReadOnlyList GetBuiltInPresets() => BgSkeletonDeep = "#1a1a1a", BgOverlay = "#CC121212", AccentColor = "#1DB954", - AccentHover = "#1ED760", + AccentHover = "#20e063", TextPrimary = "#FFFFFF", TextSecondary = "#B3B3B3", TextMuted = "#888888", - TextDark = "#000000" // Черный для контраста на зеленом + TextDark = "#000000" }, // ═══ 3. OCEAN DEEP ═══ @@ -429,7 +629,7 @@ public static IReadOnlyList GetBuiltInPresets() => BgSkeletonDeep = "#000d12", BgOverlay = "#CC001219", AccentColor = "#00B4D8", - AccentHover = "#48CAE4", + AccentHover = "#45c9e4", TextPrimary = "#E0FBFC", TextSecondary = "#98C1D9", TextMuted = "#5B8FA8", @@ -450,11 +650,11 @@ public static IReadOnlyList GetBuiltInPresets() => BgSkeletonDeep = "#050505", BgOverlay = "#CC000000", AccentColor = "#FFFFFF", - AccentHover = "#E0E0E0", + AccentHover = "#CCCCCC", TextPrimary = "#FFFFFF", TextSecondary = "#A0A0A0", TextMuted = "#606060", - TextDark = "#000000" // Черный текст на белом акценте + TextDark = "#000000" }, // ═══ 5. WARM SUNSET ═══ @@ -506,9 +706,9 @@ private ThemeSettings LoadThemeFromDisk() { try { - if (File.Exists(G.File.Theme)) + if (File.Exists(G.FilePath.Theme)) { - var json = File.ReadAllText(G.File.Theme); + var json = File.ReadAllText(G.FilePath.Theme); var theme = JsonSerializer.Deserialize(json, G.Json.Beautiful); if (theme != null) { @@ -533,11 +733,16 @@ private static void SetColor(IResourceDictionary resources, string key, string h if (!TryParseColor(hex, out var color)) { Log.Error($"Invalid color: {key}={hex}"); - color = Colors.Magenta; // Яркий цвет для отладки + color = Colors.Magenta; } resources[key] = color; resources[$"{key}Brush"] = new SolidColorBrush(color); + + // Прозрачная версия для анимаций (альфа = 0, но тот же RGB) + var transparent = new Color(0, color.R, color.G, color.B); + resources[$"{key}Transparent"] = transparent; + resources[$"{key}TransparentBrush"] = new SolidColorBrush(transparent); } private static bool TryParseColor(string hex, out Color color) diff --git a/Core/Services/TrackRegistry.cs b/Core/Services/TrackRegistry.cs index 8a43d13..f8da9c8 100644 --- a/Core/Services/TrackRegistry.cs +++ b/Core/Services/TrackRegistry.cs @@ -1,4 +1,8 @@ +using System.Buffers; using System.Collections.Concurrent; +using System.Runtime.CompilerServices; +using LMP.Core.Audio; +using LMP.Core.Audio.Cache; using LMP.Core.Data.Repositories; using LMP.Core.Models; @@ -6,14 +10,14 @@ namespace LMP.Core.Services; /// /// Identity Map / L1 Cache for TrackInfo objects. -/// Combines in-memory caching with database backing. +/// минимизированы аллокации, batch-операции, ValueTask для hot paths. /// public sealed class TrackRegistry { - private readonly ConcurrentDictionary> _cache = new(); - private readonly ConcurrentDictionary _pinned = new(); - - public StreamCacheManager? CacheManager { get; set; } + private readonly ConcurrentDictionary> _cache = + new(StringComparer.Ordinal); + private readonly ConcurrentDictionary _pinned = + new(StringComparer.Ordinal); private readonly ITrackRepository? _repository; private readonly IPlaylistRepository? _playlists; @@ -24,58 +28,52 @@ public TrackRegistry(ITrackRepository? repository = null, IPlaylistRepository? p _playlists = playlists; } + /// + /// Получает AudioCacheManager из AudioSourceFactory (lazy, singleton). + /// + [MethodImpl(MethodImplOptions.AggressiveInlining)] + private static AudioCacheManager? GetAudioCache() => AudioSourceFactory.GlobalCache; + /// /// Registers or updates a track. Returns the canonical instance. /// + [MethodImpl(MethodImplOptions.AggressiveInlining)] public TrackInfo RegisterOrUpdate(TrackInfo incoming) { if (string.IsNullOrEmpty(incoming.Id)) return incoming; - TrackInfo result; - - // 1. Check pinned (Strong Reference) if (_pinned.TryGetValue(incoming.Id, out var pinned)) { pinned.UpdateMetadata(incoming); - result = pinned; + return pinned; } - // 2. Check weak cache - else if (_cache.TryGetValue(incoming.Id, out var weakRef) && weakRef.TryGetTarget(out var cached)) + + if (_cache.TryGetValue(incoming.Id, out var weakRef) && weakRef.TryGetTarget(out var cached)) { cached.UpdateMetadata(incoming); - result = cached; - } - // 3. New registration - else - { - _cache[incoming.Id] = new WeakReference(incoming); - result = incoming; + return cached; } - // Обновляем статус кэширования, если менеджер доступен - if (CacheManager != null && !result.IsDownloaded && !result.IsCached) + _cache[incoming.Id] = new WeakReference(incoming); + + // Обновляем статус кэширования из AudioCacheManager + if (!incoming.IsDownloaded && !incoming.IsCached) { - // Простая проверка без тяжелых операций, так как этот метод вызывается часто - if (CacheManager.IsFullyCached(result.Id)) + var audioCache = GetAudioCache(); + if (audioCache != null && audioCache.IsTrackFullyCached(incoming.Id)) { - var meta = StreamCacheManager.TryGetMetadata(result.Id); - if (meta != null) - { - result.MarkAsCached(meta.Container, meta.Bitrate); - } + var bestEntry = audioCache.FindBestCacheByTrackId(incoming.Id); + if (bestEntry != null) + incoming.MarkAsCached(bestEntry.Format.ToString(), bestEntry.Bitrate); else - { - result.IsCached = true; - } + incoming.IsCached = true; } } - return result; + return incoming; } - /// - /// Gets track from L1 cache only (no DB access). - /// + [MethodImpl(MethodImplOptions.AggressiveInlining)] public TrackInfo? TryGet(string id) { if (string.IsNullOrEmpty(id)) return null; @@ -86,10 +84,7 @@ public TrackInfo RegisterOrUpdate(TrackInfo incoming) return null; } - /// - /// Gets track from cache or loads from database. - /// - public async Task GetOrLoadAsync(string id, CancellationToken ct = default) + public async ValueTask GetOrLoadAsync(string id, CancellationToken ct = default) { var cached = TryGet(id); if (cached != null) return cached; @@ -104,40 +99,54 @@ public TrackInfo RegisterOrUpdate(TrackInfo incoming) fromDb.InPlaylists = await _playlists.GetPlaylistsForTrackAsync(id, ct); } - // Автоматически пиним при загрузке из БД, если нужно var canonical = RegisterOrUpdate(fromDb); - UpdatePinStatusInternal(canonical); - + UpdatePinStatusInternal(canonical); + return canonical; } - /// - /// Batch preload tracks into cache. - /// public async Task PreloadAsync(IEnumerable ids, CancellationToken ct = default) { if (_repository == null) return; - var toLoad = ids.Where(id => TryGet(id) == null).Distinct().ToList(); - if (toLoad.Count == 0) return; + var toLoadSet = new HashSet(StringComparer.Ordinal); + + foreach (var id in ids) + { + if (TryGet(id) == null) + toLoadSet.Add(id); + } + + if (toLoadSet.Count == 0) return; - var loaded = await _repository.GetByIdsAsync(toLoad, ct); + var loaded = await _repository.GetByIdsAsync(toLoadSet, ct); + if (loaded.Count == 0) return; - foreach (var track in loaded) + Dictionary>? playlistsMap = null; + if (_playlists != null) + { + var loadedIds = new List(loaded.Count); + for (int i = 0; i < loaded.Count; i++) + loadedIds.Add(loaded[i].Id); + + playlistsMap = await _playlists.GetPlaylistsForTracksAsync(loadedIds, ct); + } + + for (int i = 0; i < loaded.Count; i++) { - if (_playlists != null) + var track = loaded[i]; + + if (playlistsMap != null && playlistsMap.TryGetValue(track.Id, out var pls)) { - track.InPlaylists = await _playlists.GetPlaylistsForTrackAsync(track.Id, ct); + track.InPlaylists = pls; } - var t = RegisterOrUpdate(track); - UpdatePinStatusInternal(t); + + var canonical = RegisterOrUpdate(track); + UpdatePinStatusInternal(canonical); } } - /// - /// Updates pinning status based on track importance. - /// Returns true if track was added to pinned. - /// + [MethodImpl(MethodImplOptions.AggressiveInlining)] private bool UpdatePinStatusInternal(TrackInfo track) { bool shouldPin = track.IsLiked || @@ -149,7 +158,7 @@ private bool UpdatePinStatusInternal(TrackInfo track) { if (_pinned.TryAdd(track.Id, track)) { - MemoryDiagnostics.TrackBytes("TrackRegistry.Pinned", 1024); // Примерный размер + MemoryDiagnostics.TrackBytes("TrackRegistry.Pinned", 1024); return true; } } @@ -163,6 +172,7 @@ private bool UpdatePinStatusInternal(TrackInfo track) return false; } + [MethodImpl(MethodImplOptions.AggressiveInlining)] public void UpdatePinStatus(TrackInfo track) { UpdatePinStatusInternal(track); @@ -175,7 +185,7 @@ public async Task HydrateAsync(CancellationToken ct = default) Log.Info("[TrackRegistry] Hydrating from database..."); var sw = System.Diagnostics.Stopwatch.StartNew(); - var allLoaded = new List(); + var allLoaded = new List(2200); var liked = await _repository.GetLikedAsync(1000, 0, ct); allLoaded.AddRange(liked); @@ -183,24 +193,40 @@ public async Task HydrateAsync(CancellationToken ct = default) var downloaded = await _repository.GetDownloadedAsync(1000, 0, ct); allLoaded.AddRange(downloaded); - // Recent tracks might not need to be pinned permanently, but useful to have in cache var recent = await _repository.GetRecentlyPlayedAsync(100, ct); allLoaded.AddRange(recent); - foreach (var t in allLoaded) + var allIds = new HashSet(allLoaded.Count, StringComparer.Ordinal); + for (int i = 0; i < allLoaded.Count; i++) + allIds.Add(allLoaded[i].Id); + + Dictionary>? playlistsMap = null; + + if (_playlists != null && allIds.Count > 0) { - if (_playlists != null) t.InPlaylists = await _playlists.GetPlaylistsForTrackAsync(t.Id, ct); - + playlistsMap = await _playlists.GetPlaylistsForTracksAsync(allIds, ct); + } + + for (int i = 0; i < allLoaded.Count; i++) + { + var t = allLoaded[i]; + + if (playlistsMap != null && playlistsMap.TryGetValue(t.Id, out var pls)) + { + t.InPlaylists = pls; + } + var canonical = RegisterOrUpdate(t); UpdatePinStatusInternal(canonical); } - // Обновляем статусы кэша для всех запиненных треков - CacheManager?.HydrateCacheStatus(_pinned.Values); + // Массовая гидрация кэш-статуса через AudioCacheManager + var audioCache = GetAudioCache(); + audioCache?.HydrateCacheStatus(_pinned.Values); sw.Stop(); Log.Info($"[TrackRegistry] Hydrated {_pinned.Count} pinned tracks in {sw.ElapsedMilliseconds}ms"); - + MemoryDiagnostics.SetBytes("TrackRegistry.Pinned", _pinned.Count * 1024); } @@ -226,15 +252,35 @@ public async Task FlushAsync(CancellationToken ct = default) public int CleanupDeadReferences() { - var dead = _cache - .Where(kvp => !kvp.Value.TryGetTarget(out _) && !_pinned.ContainsKey(kvp.Key)) - .Select(kvp => kvp.Key) - .ToList(); + var maxDeadCount = _cache.Count; + + var deadKeysArray = ArrayPool.Shared.Rent(maxDeadCount); + int deadCount = 0; + + try + { + foreach (var kvp in _cache) + { + if (!kvp.Value.TryGetTarget(out _) && !_pinned.ContainsKey(kvp.Key)) + { + if (deadCount < deadKeysArray.Length) + { + deadKeysArray[deadCount++] = kvp.Key; + } + } + } - foreach (var key in dead) - _cache.TryRemove(key, out _); + for (int i = 0; i < deadCount; i++) + { + _cache.TryRemove(deadKeysArray[i], out _); + } - return dead.Count; + return deadCount; + } + finally + { + ArrayPool.Shared.Return(deadKeysArray, clearArray: true); + } } public void Clear() @@ -243,4 +289,88 @@ public void Clear() _cache.Clear(); _pinned.Clear(); } + + /// + /// Подписывается на события AudioCacheManager. + /// Вызывать после инициализации AudioSourceFactory.GlobalCache. + /// + public void SubscribeToCacheEvents() + { + var audioCache = GetAudioCache(); + if (audioCache == null) + { + Log.Warn("[TrackRegistry] AudioCache not available for event subscription"); + return; + } + + audioCache.OnCacheCleared += HandleCacheCleared; + audioCache.OnFormatCached += HandleFormatCached; + + Log.Info("[TrackRegistry] Subscribed to AudioCache events"); + } + + /// + /// Вызывается когда весь кэш очищен — сбрасываем IsCached у всех треков. + /// + private void HandleCacheCleared() + { + int cleared = 0; + + // Сбрасываем у pinned (сильные ссылки — гарантированно живые) + foreach (var track in _pinned.Values) + { + if (track.IsCached && !track.IsDownloaded) + { + track.ClearCacheStatus(); + cleared++; + } + } + + // Сбрасываем у обычного кэша (слабые ссылки) + foreach (var weakRef in _cache.Values) + { + if (weakRef.TryGetTarget(out var track) && track.IsCached && !track.IsDownloaded) + { + // Не дублируем если уже обработали в pinned + if (!_pinned.ContainsKey(track.Id)) + { + track.ClearCacheStatus(); + cleared++; + } + } + } + + Log.Info($"[TrackRegistry] Cache cleared: reset IsCached on {cleared} tracks"); + } + + /// + /// Вызывается когда формат трека полностью закэширован — помечаем трек. + /// + private void HandleFormatCached(string trackId, string container, int bitrate, bool isDownloaded) + { + if (string.IsNullOrEmpty(trackId)) return; + + // Ищем трек в pinned + if (_pinned.TryGetValue(trackId, out var pinned)) + { + if (isDownloaded) + pinned.MarkAsDownloaded(pinned.LocalPath ?? "", container, bitrate); + else + pinned.MarkAsCached(container, bitrate); + + Log.Debug($"[TrackRegistry] Marked pinned track {trackId} as cached ({container}/{bitrate}kbps)"); + return; + } + + // Ищем в слабом кэше + if (_cache.TryGetValue(trackId, out var weakRef) && weakRef.TryGetTarget(out var cached)) + { + if (isDownloaded) + cached.MarkAsDownloaded(cached.LocalPath ?? "", container, bitrate); + else + cached.MarkAsCached(container, bitrate); + + Log.Debug($"[TrackRegistry] Marked cached track {trackId} as cached ({container}/{bitrate}kbps)"); + } + } } \ No newline at end of file diff --git a/Core/Services/TrackViewModelFactory.cs b/Core/Services/TrackViewModelFactory.cs index bf59ea7..153476a 100644 --- a/Core/Services/TrackViewModelFactory.cs +++ b/Core/Services/TrackViewModelFactory.cs @@ -10,27 +10,27 @@ namespace LMP.Core.Services; /// public class TrackViewModelFactory { + private readonly LibraryService _library; private readonly AudioEngine _audio; private readonly DownloadService _downloads; private readonly MusicLibraryManager _manager; private readonly TrackRegistry _registry; - private readonly StreamCacheManager _cacheManager; // Кэш для "общих" VM (используются в Home, Search, Library, Playlist) private readonly ConcurrentDictionary> _cache = new(); public TrackViewModelFactory( + LibraryService library, AudioEngine audio, DownloadService downloads, MusicLibraryManager manager, - TrackRegistry registry, - StreamCacheManager cacheManager) + TrackRegistry registry) { + _library = library; _audio = audio; _downloads = downloads; _manager = manager; _registry = registry; - _cacheManager = cacheManager; } /// @@ -103,7 +103,7 @@ private TrackItemViewModel CreateVmInstance(TrackInfo track, Action? _audio, _downloads, _manager, - _cacheManager, + _library, playAction); } diff --git a/Core/Services/YoutubeProvider.cs b/Core/Services/YoutubeProvider.cs index 0d7e503..c1b6b41 100644 --- a/Core/Services/YoutubeProvider.cs +++ b/Core/Services/YoutubeProvider.cs @@ -1,45 +1,88 @@ -using LMP.Core.Youtube; +using System.Collections.Concurrent; +using System.Diagnostics; +using System.Net; +using System.Runtime.CompilerServices; +using System.Text.RegularExpressions; +using LMP.Core.Models; +using LMP.Core.Youtube; +using LMP.Core.Youtube.Channels; using LMP.Core.Youtube.Playlists; using LMP.Core.Youtube.Search; using LMP.Core.Youtube.Videos; using LMP.Core.Youtube.Videos.Streams; -using LMP.Core.Models; -using System.Diagnostics; -using System.Text.RegularExpressions; -using System.Net; -using LMP.Core.Youtube.Channels; -using System.Runtime.CompilerServices; -using Microsoft.Extensions.DependencyInjection; using LMP.Core.Youtube.Utils; using LMP.Core.Youtube.Utils.Extensions; -using ReactiveUI.Fody.Helpers; using ReactiveUI; +using ReactiveUI.Fody.Helpers; +using LMP.Core.Youtube.Exceptions; +using LMP.Core.Audio; +using LMP.Core.Youtube.Bridge.NToken; +using LMP.Core.Youtube.Bridge.SigCipher; +using Microsoft.Extensions.DependencyInjection; namespace LMP.Core.Services; +/// +/// Провайдер YouTube API — получение треков, поиск, плейлисты, стримы. +/// +/// +/// Принцип работы с ошибками (SOLID — Dependency Inversion): +/// Этот класс НЕ знает о UI и диалогах. Он только: +/// +/// Выбрасывает типизированные исключения наверх +/// Логирует ошибки +/// Генерирует события для информационных целей +/// +/// Решение о показе диалогов принимает . +/// public partial class YoutubeProvider : IDisposable { private const int DefaultCacheLifetimeHours = 4; private const int MaxCacheSize = 200; + private readonly NTokenDecryptor _nTokenDecryptor; + private readonly SigCipherDecryptor _sigCipherDecryptor; private readonly TrackRegistry _trackRegistry; - private readonly CookieAuthService? _cookieAuth; + public readonly CookieAuthService AuthService = null!; private readonly LibraryService? _libraryService; - private readonly Dictionary _streamCache = []; private readonly TimeSpan _streamCacheLifetime = TimeSpan.FromHours(DefaultCacheLifetimeHours); + // struct вместо class для StreamCacheEntry + private readonly ConcurrentDictionary _streamCache = + new(StringComparer.Ordinal); + private YoutubeClient _youtube = null!; - private HttpClient? _currentHttpClient; // Храним ссылку для dispose - private bool _disposed; - private class StreamCacheEntry + // храним handler отдельно для переиспользования + private SocketsHttpHandler? _currentHandler; + private HttpClient? _currentHttpClient; + private volatile bool _disposed; + + /// + /// readonly struct вместо class — zero heap allocation. + /// + private readonly struct StreamCacheEntry { - public required string Url { get; init; } - public long Size { get; init; } - public int Bitrate { get; init; } - public required string Codec { get; init; } - public required string Container { get; init; } - public DateTime Obtained { get; init; } + public readonly string Url; + public readonly long Size; + public readonly int Bitrate; + public readonly string Codec; + public readonly string Container; + public readonly DateTime Obtained; + + public StreamCacheEntry(string url, long size, int bitrate, string codec, string container) + { + Url = url; + Size = size; + Bitrate = bitrate; + Codec = codec; + Container = container; + Obtained = DateTime.UtcNow; + } + + [MethodImpl(MethodImplOptions.AggressiveInlining)] + public bool IsExpired(TimeSpan lifetime) => + DateTime.UtcNow - Obtained > lifetime; } public bool IsReady { get; private set; } @@ -47,65 +90,120 @@ private class StreamCacheEntry public event Action? OnStatusChanged; public event Action? OnError; - [GeneratedRegex("\"VISITOR_DATA\":\"([^\"]+)\"")] - private static partial Regex VisitorDataRegex(); - private static readonly Regex YoutubeVideoRegex = _YoutubeVideoRegex(); private static readonly Regex YoutubePlaylistRegex = _YoutubePlaylistRegex(); private static readonly Regex ValidYoutubeId = _ValidYoutubeId(); - public YoutubeProvider(TrackRegistry trackRegistry, LibraryService? libraryService, CookieAuthService? cookieAuth) + public YoutubeProvider( + TrackRegistry trackRegistry, + LibraryService? libraryService, + CookieAuthService cookieAuth, + NTokenDecryptor nTokenDecryptor, + SigCipherDecryptor sigCipherDecryptor) { _trackRegistry = trackRegistry; _libraryService = libraryService; - _cookieAuth = cookieAuth; + AuthService = cookieAuth; + _nTokenDecryptor = nTokenDecryptor; + _sigCipherDecryptor = sigCipherDecryptor; - if (_cookieAuth != null) + if (AuthService != null) { ReloadClient(); - _cookieAuth.OnAuthStateChanged += ReloadClient; + AuthService.OnAuthStateChanged += ReloadClient; } } + #region Bot Detection — Stateless Helpers + + /// + /// Проверяет можно ли воспроизвести трек без запросов к YouTube. + /// + public static bool CanPlayOffline(TrackInfo track) + { + if (string.IsNullOrEmpty(track.Id)) + return false; + + var rawId = track.GetRawIdSpan().ToString(); + if (string.IsNullOrEmpty(rawId)) + return false; + + var cached = AudioSourceFactory.FindAnyCachedTrack(rawId); + return cached != null; + } + + /// + /// Проверяет можно ли выполнить сетевую операцию. + /// + public static bool CanPerformNetworkOperation() => !VideoController.IsInCooldown; + + /// + /// Выбрасывает если в cooldown. + /// + /// Если YouTube rate limiting активен. + public static void ThrowIfInCooldown() => VideoController.ThrowIfInCooldown(); + + // УДАЛЕНО: HandleBotDetectionCooldown, HandleStreamUnavailable + // Эти методы вызывали DialogService напрямую — нарушение DIP + + #endregion + + #region Client Initialization + + /// + /// Переиспользуем SocketsHttpHandler вместо создания нового каждый раз. + /// public void ReloadClient() { - // 1. СНАЧАЛА диспозим старый клиент DisposeCurrentClient(); - // 2. Создаём новый - var handler = new HttpClientHandler + _currentHandler = new SocketsHttpHandler { UseCookies = false, - AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate, - AllowAutoRedirect = false + AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate | DecompressionMethods.Brotli, + AllowAutoRedirect = false, + PooledConnectionLifetime = TimeSpan.FromMinutes(10), + PooledConnectionIdleTimeout = TimeSpan.FromMinutes(5), + MaxConnectionsPerServer = 20, + EnableMultipleHttp2Connections = true, + KeepAlivePingPolicy = HttpKeepAlivePingPolicy.WithActiveRequests, + KeepAlivePingDelay = TimeSpan.FromSeconds(30), + KeepAlivePingTimeout = TimeSpan.FromSeconds(10), + ConnectTimeout = TimeSpan.FromSeconds(10), }; - var baseHttpClient = new HttpClient(handler); - var youtubeHandler = new YoutubeHttpHandler(baseHttpClient, _cookieAuth, disposeClient: true); - _currentHttpClient = new HttpClient(youtubeHandler, disposeHandler: true); + var baseHttpClient = new HttpClient(_currentHandler, disposeHandler: false) + { + Timeout = TimeSpan.FromSeconds(30) + }; - _youtube = new YoutubeClient(_currentHttpClient); + var youtubeHandler = new YoutubeHttpHandler(baseHttpClient, AuthService, disposeClient: true); - Log.Info($"[YouTube] Client reloaded. Auth provided: {_cookieAuth?.IsAuthenticated ?? false}"); + _currentHttpClient = new HttpClient(youtubeHandler, disposeHandler: true) + { + Timeout = TimeSpan.FromSeconds(30) + }; + + _youtube = new YoutubeClient( + _currentHttpClient, + _nTokenDecryptor, + _sigCipherDecryptor, + isAuthenticatedCheck: () => AuthService?.IsAuthenticated ?? false, + ownsHttpClient: false); + + Log.Info($"[YouTube] Client reloaded. Auth: {AuthService?.IsAuthenticated ?? false}"); } private void DisposeCurrentClient() { try { - // Диспозим текущую сессию поиска _currentSearchSession?.Dispose(); _currentSearchSession = null; - // YoutubeClient может иметь свой Dispose - // Если нет - диспозим HttpClient напрямую - if (_youtube is IDisposable disposableClient) - { - disposableClient.Dispose(); - } - _currentHttpClient?.Dispose(); _currentHttpClient = null; + _youtube = null!; } catch (Exception ex) @@ -116,20 +214,18 @@ private void DisposeCurrentClient() public async Task InitializeAsync() { - if (_cookieAuth?.IsAuthenticated == true) + if (AuthService?.IsAuthenticated == true) { Log.Info("[YouTube] Fetching fresh Visitor Data for auth session..."); var visitorData = await FetchVisitorDataAsync(); + _youtube.Music.SetVisitorData( + !string.IsNullOrEmpty(visitorData) + ? visitorData + : "CgtsZG1ySnZiQWtSbyiMjuGSBg%3D%3D"); + if (!string.IsNullOrEmpty(visitorData)) - { - _youtube.Music.SetVisitorData(visitorData); Log.Info($"[YouTube] Visitor Data synchronized: {visitorData}"); - } - else - { - _youtube.Music.SetVisitorData("CgtsZG1ySnZiQWtSbyiMjuGSBg%3D%3D"); - } } IsReady = true; @@ -143,19 +239,16 @@ public async Task InitializeAsync() using var client = new HttpClient(); client.DefaultRequestHeaders.UserAgent.ParseAdd(YoutubeClientUtils.UaWeb); - if (_cookieAuth != null) - { - client.DefaultRequestHeaders.Add("Cookie", _cookieAuth.GetCookieHeader()); - } + if (AuthService != null) + client.DefaultRequestHeaders.Add("Cookie", AuthService.GetCookieHeader()); var jsonStr = await client.GetStringAsync("https://music.youtube.com/sw.js_data"); - if (jsonStr.StartsWith(")]}'")) jsonStr = jsonStr[4..]; + if (jsonStr.StartsWith(")]}'")) + jsonStr = jsonStr[4..]; var json = Json.Parse(jsonStr); - var visitorData = json[0][2][0][0][13].GetStringOrNull(); - - return visitorData; + return json[0][2][0][0][13].GetStringOrNull(); } catch (Exception ex) { @@ -164,33 +257,52 @@ public async Task InitializeAsync() } } - public YoutubeClient GetClient() => _youtube ?? throw new InvalidOperationException("YouTube client not initialized"); + public YoutubeClient GetClient() => + _youtube ?? throw new InvalidOperationException("YouTube client not initialized"); + + #endregion - // --- ПЕРСОНАЛИЗАЦИЯ --- + #region Personalization + /// + /// Получает персонализированную домашнюю страницу. + /// + /// При rate limiting. public async Task> GetPersonalizedHomeAsync(CancellationToken ct = default) { - if (_cookieAuth?.IsAuthenticated != true) return []; + if (AuthService?.IsAuthenticated != true) return []; + + // Проверка cooldown — выбрасываем исключение вместо возврата пустого списка + ThrowIfInCooldown(); try { var shelves = await _youtube.Music.GetPersonalizedHomeAsync(ct); - var sections = new List(); + var sections = new List(shelves.Count); foreach (var shelf in shelves) { + // Проверяем cooldown между обработкой секций + if (VideoController.IsInCooldown) + { + Log.Warn("[YouTube] Home loading interrupted by bot detection"); + break; + } + var section = new HomeSection { Title = shelf.Title }; - foreach (var item in shelf.Items) + for (int i = 0; i < shelf.Items.Count; i++) { - var thumbUrl = item.Thumbnails.OrderByDescending(t => t.Resolution.Area).FirstOrDefault()?.Url - ?? $"https://i.ytimg.com/vi/{item.Id}/mqdefault.jpg"; + var item = shelf.Items[i]; + + string thumbUrl = GetBestThumbnailUrl(item.Thumbnails) + ?? $"https://i.ytimg.com/vi/{item.Id}/mqdefault.jpg"; bool isMusicContent = string.Equals(item.Type, "Song", StringComparison.OrdinalIgnoreCase); var track = new TrackInfo { - Id = "yt_" + item.Id, + Id = item.Id, Title = item.Title, Author = item.Author ?? "Unknown", ThumbnailUrl = thumbUrl, @@ -199,14 +311,10 @@ public async Task> GetPersonalizedHomeAsync(CancellationToken Url = $"https://music.youtube.com/watch?v={item.Id}" }; - if (item.Type == "Playlist" || item.Type == "Album") - { - track.Id = "yt_pl_" + item.Id; - } + if (item.Type is "Playlist" or "Album") + track.Id = $"yt_pl_{item.Id}"; else - { track = _trackRegistry.RegisterOrUpdate(track); - } section.Tracks.Add(track); } @@ -217,23 +325,29 @@ public async Task> GetPersonalizedHomeAsync(CancellationToken return sections; } + catch (BotDetectionException) + { + throw; // Пробрасываем — пусть вызывающий код решает что делать + } catch (Exception ex) { Log.Error($"[Music] Failed to get home: {ex.Message}"); - return []; + throw; // Пробрасываем вместо возврата пустого списка } } - // --- ЛАЙКИ И ПЛЕЙЛИСТЫ (WRITE) --- + #endregion + + #region Лайки и плейлисты public async Task LikeTrackAsync(string trackId, bool like) { - if (_cookieAuth?.IsAuthenticated != true) return; + if (AuthService?.IsAuthenticated != true) return; try { - var vid = trackId.Replace("yt_", ""); - await _youtube.Music.LikeTrackAsync(vid, like); - Log.Info($"[Music] Liked status set to {like} for {vid}"); + var rawId = ExtractRawIdSpan(trackId).ToString(); + await _youtube.Music.LikeTrackAsync(rawId, like); + Log.Info($"[Music] Like={like} for {rawId}"); } catch (Exception ex) { @@ -244,11 +358,10 @@ public async Task LikeTrackAsync(string trackId, bool like) public async Task CreatePlaylistAsync(string title) { - if (_cookieAuth?.IsAuthenticated != true) return null; + if (AuthService?.IsAuthenticated != true) return null; try { - var id = await _youtube.Music.CreatePlaylistAsync(title); - return id; + return await _youtube.Music.CreatePlaylistAsync(title); } catch (Exception ex) { @@ -259,10 +372,11 @@ public async Task LikeTrackAsync(string trackId, bool like) public async Task AddToPlaylistAsync(string playlistId, string trackId) { - if (_cookieAuth?.IsAuthenticated != true) return; + if (AuthService?.IsAuthenticated != true) return; try { - await _youtube.Music.AddToPlaylistAsync(playlistId, trackId.Replace("yt_", "")); + var rawId = ExtractRawIdSpan(trackId).ToString(); + await _youtube.Music.AddToPlaylistAsync(playlistId, rawId); } catch (Exception ex) { @@ -270,13 +384,22 @@ public async Task AddToPlaylistAsync(string playlistId, string trackId) } } + #endregion + #region RefreshStreamUrlAsync + + /// + /// Получает URL аудио-потока для трека. + /// + /// При rate limiting. + /// При недоступности стрима. + /// При требовании авторизации. public async Task<(string Url, long Size, int Bitrate, string Codec, string Container)?> RefreshStreamUrlAsync( - TrackInfo track, - bool forceRefresh = false, - CancellationToken ct = default) + TrackInfo track, + bool forceRefresh = false, + CancellationToken ct = default) { - string? videoId = ExtractVideoIdFromTrack(track); + var videoId = track.GetRawIdSpan().ToString(); if (string.IsNullOrEmpty(videoId)) { NotifyError("[YouTube] Could not extract video ID"); @@ -285,10 +408,57 @@ public async Task AddToPlaylistAsync(string playlistId, string trackId) var sw = Stopwatch.StartNew(); - if (forceRefresh) - NotifyStatus($"[YouTube] [{videoId}] 403 detected. Forcing stream URL refresh..."); - else - NotifyStatus($"[YouTube] [{videoId}] Getting stream URL..."); + // ПРОВЕРКА КЭША — ПРИОРИТЕТ №1 (работает даже в cooldown) + + if (!forceRefresh) + { + var cached = AudioSourceFactory.FindAnyCachedTrack(videoId); + if (cached != null) + { + Log.Info($"[YouTube] [{videoId}] Using fully cached track ({cached.Value.Entry.Format}/{cached.Value.Entry.Bitrate}kbps)"); + track.StreamUrl = ""; + return ("", cached.Value.Entry.TotalSize, + cached.Value.Entry.Bitrate, + cached.Value.Entry.Codec.ToString(), + cached.Value.Entry.Format.ToString()); + } + } + + // Если трек помечен как HLS-only — сразу возвращаем HLS + + if (track.IsHlsOnly) + { + if (!string.IsNullOrEmpty(track.HlsManifestUrl) && !forceRefresh) + { + NotifyStatus($"[YouTube] [{videoId}] Using cached HLS manifest"); + return (track.HlsManifestUrl, 0, 128, "HLS", "m3u8"); + } + + // Проверяем cooldown перед сетевым запросом + ThrowIfInCooldown(); + + var freshHls = await GetHlsManifestAsync(videoId, ct); + if (freshHls != null) + { + track.HlsManifestUrl = freshHls; + return (freshHls, 0, 128, "HLS", "m3u8"); + } + + // HLS не доступен — выбрасываем исключение + throw new StreamUnavailableException( + $"HLS manifest unavailable for {videoId}", + videoId, + StreamUnavailableReason.AllClientsFailed, + wasHlsFallback: true); + } + + // ПРОВЕРКА BOT DETECTION — ПЕРЕД СЕТЕВЫМИ ЗАПРОСАМИ + + ThrowIfInCooldown(); + + NotifyStatus(forceRefresh + ? $"[YouTube] [{videoId}] Forcing URL refresh..." + : $"[YouTube] [{videoId}] Getting stream URL..."); string? targetContainer = track.TransientContainer; int targetBitrate = track.TransientBitrate; @@ -303,95 +473,231 @@ public async Task AddToPlaylistAsync(string playlistId, string trackId) } } - string cacheKey = GenerateCacheKey(videoId, targetContainer, targetBitrate); + string cacheKey = GenerateCacheKeyFromString(videoId, targetContainer, targetBitrate); - if (!forceRefresh && TryGetFromCache(cacheKey, out var cached)) + // Проверяем кэш URL + if (!forceRefresh && TryGetFromCache(cacheKey, out var cachedUrl)) { - track.StreamUrl = cached.Url; - NotifyStatus($"[YouTube] [{videoId}] Using cached URL ({cached.Codec}/{cached.Bitrate}kbps)"); - return (cached.Url, cached.Size, cached.Bitrate, cached.Codec, cached.Container); + track.StreamUrl = cachedUrl.Url; + NotifyStatus($"[YouTube] [{videoId}] Cached ({cachedUrl.Codec}/{cachedUrl.Bitrate}kbps)"); + return (cachedUrl.Url, cachedUrl.Size, cachedUrl.Bitrate, cachedUrl.Codec, cachedUrl.Container); } try { var vId = VideoId.Parse(videoId); - var manifest = await _youtube.Videos.Streams.GetManifestAsync(vId, ct); - var audioStreams = manifest.GetAudioOnlyStreams() - .OrderByDescending(s => s.Bitrate) - .ToList(); - if (audioStreams.Count == 0) + // STEP 1: Пробуем получить обычные audio-only стримы + + try { - NotifyError($"[YouTube] [{videoId}] No audio streams found"); - return null; - } + var manifest = await _youtube.Videos.Streams.GetManifestAsync(vId, ct); + var audioStreams = manifest.GetAudioOnlyStreams() + .OrderByDescending(s => s.Bitrate) + .ToList(); - AudioOnlyStreamInfo? selectedStream = SelectBestStream(audioStreams, targetContainer, targetBitrate); + if (audioStreams.Count > 0) + { + var selectedStream = SelectBestStream(audioStreams, targetContainer, targetBitrate); + if (selectedStream != null) + { + var url = selectedStream.Url; + var size = selectedStream.Size.Bytes; + var bitrate = (int)selectedStream.Bitrate.KiloBitsPerSecond; + var container = selectedStream.Container.Name; + var codec = DetermineCodec(container, selectedStream); + + sw.Stop(); + NotifyStatus($"[YouTube] [{videoId}] Stream: {codec}/{bitrate}kbps in {sw.ElapsedMilliseconds}ms"); + + CacheStreamUrl(cacheKey, url, size, bitrate, codec, container); + + track.StreamUrl = url; + track.TransientContainer = container; + track.TransientSize = size; + track.CachedCodec = codec; + track.CachedBitrate = bitrate; + track.CachedContainer = container; + track.IsHlsOnly = false; + track.HlsManifestUrl = null; + + return (url, size, bitrate, codec, container); + } + } - if (selectedStream == null) + Log.Warn($"[YouTube] [{videoId}] No audio-only streams available"); + } + catch (BotDetectionException) { - NotifyError($"[YouTube] [{videoId}] Could not select audio stream"); - return null; + throw; // Пробрасываем } + catch (VideoUnplayableException ex) + { + Log.Warn($"[YouTube] [{videoId}] Video unplayable: {ex.Message}"); - var url = selectedStream.Url; - var size = selectedStream.Size.Bytes; - var bitrate = (int)selectedStream.Bitrate.KiloBitsPerSecond; - var container = selectedStream.Container.Name; - var codec = DetermineCodec(container, selectedStream); + if (IsBotDetectionError(ex.Message)) + throw new BotDetectionException(ex.Message, VideoController.GetRemainingCooldown()); + } + catch (StreamUnavailableException ex) when (ex.HttpStatusCode == 403) + { + Log.Error($"[YouTube] [{videoId}] HTTP 403 Forbidden"); + throw; // Пробрасываем + } + catch (Exception ex) + { + Log.Warn($"[YouTube] [{videoId}] Stream manifest failed: {ex.Message}"); + } - sw.Stop(); - NotifyStatus($"[YouTube] [{videoId}] Got stream: {codec}/{bitrate}kbps ({container}) in {sw.ElapsedMilliseconds}ms"); + // STEP 2: HLS Fallback + + Log.Info($"[YouTube] [{videoId}] Falling back to HLS (IOS priority)..."); + + try + { + var hlsUrl = await GetHlsManifestAsync(videoId, ct); + + if (!string.IsNullOrEmpty(hlsUrl)) + { + track.IsHlsOnly = true; + track.HlsManifestUrl = hlsUrl; + track.StreamUrl = hlsUrl; + track.TransientContainer = "m3u8"; + track.CachedCodec = "HLS"; + track.CachedBitrate = 128; + track.CachedContainer = "m3u8"; + + sw.Stop(); + NotifyStatus($"[YouTube] [{videoId}] ⚠️ HLS-only track in {sw.ElapsedMilliseconds}ms"); + Log.Warn($"[YouTube] [{videoId}] Track marked as HLS-only — normal streams unavailable"); + + return (hlsUrl, 0, 128, "HLS", "m3u8"); + } + } + catch (StreamUnavailableException ex) when (ex.WasHlsFallback) + { + Log.Error($"[YouTube] [{videoId}] HLS fallback also failed with 403"); + throw; // Пробрасываем + } + catch (BotDetectionException) + { + throw; + } + catch (Exception ex) + { + Log.Warn($"[YouTube] [{videoId}] HLS fallback failed: {ex.Message}"); + } - CacheStreamUrl(cacheKey, url, size, bitrate, codec, container); + // ВСЕ МЕТОДЫ ПРОВАЛИЛИСЬ — выбрасываем исключение + Log.Error($"[YouTube] [{videoId}] No streams available (including HLS)"); - track.StreamUrl = url; - return (url, size, bitrate, codec, container); + throw new StreamUnavailableException( + $"Could not get any stream for video {videoId}", + videoId, + StreamUnavailableReason.AllClientsFailed); + } + catch (BotDetectionException) + { + throw; // Пробрасываем + } + catch (StreamUnavailableException) + { + throw; // Пробрасываем + } + catch (LoginRequiredException) + { + throw; // Пробрасываем } catch (OperationCanceledException) { - return null; + throw; // Пробрасываем } catch (Exception ex) { NotifyError($"[YouTube] [{videoId}] Error: {ex.Message}"); + throw; // Пробрасываем вместо return null + } + } + + private static bool IsBotDetectionError(string error) + { + return error.Contains("bot", StringComparison.OrdinalIgnoreCase) || + error.Contains("Sign in", StringComparison.OrdinalIgnoreCase) || + error.Contains("LOGIN_REQUIRED", StringComparison.OrdinalIgnoreCase) || + error.Contains("Выполните вход", StringComparison.OrdinalIgnoreCase) || + error.Contains("Войдите", StringComparison.OrdinalIgnoreCase); + } + + /// + /// Получает HLS манифест URL. + /// + private async Task GetHlsManifestAsync(string videoId, CancellationToken ct) + { + try + { + var vId = VideoId.Parse(videoId); + var controller = new VideoController(_currentHttpClient!); + return await controller.GetHlsManifestUrlAsync(vId, ct); + } + catch (Exception ex) + { + Log.Error($"[YouTube] [{videoId}] GetHlsManifest failed: {ex.Message}"); return null; } } private AudioOnlyStreamInfo? SelectBestStream( - List streams, - string? preferredContainer, - int preferredBitrate = 0) + List streams, + string? preferredContainer, + int preferredBitrate = 0) { if (streams.Count == 0) return null; + // Если указан предпочтительный контейнер — ищем его if (!string.IsNullOrEmpty(preferredContainer)) { - var containerStreams = streams.Where(s => - s.Container.Name.Equals(preferredContainer, StringComparison.OrdinalIgnoreCase)) - .ToList(); + AudioOnlyStreamInfo? bestMatch = null; + double bestDelta = double.MaxValue; + AudioOnlyStreamInfo? firstInContainer = null; - if (containerStreams.Count > 0) + for (int i = 0; i < streams.Count; i++) { + if (!streams[i].Container.Name.Equals(preferredContainer, StringComparison.OrdinalIgnoreCase)) + continue; + + firstInContainer ??= streams[i]; + if (preferredBitrate > 0) { - return containerStreams.MinBy(s => Math.Abs(s.Bitrate.KiloBitsPerSecond - preferredBitrate)); + var delta = Math.Abs(streams[i].Bitrate.KiloBitsPerSecond - preferredBitrate); + if (delta < bestDelta) + { + bestDelta = delta; + bestMatch = streams[i]; + } } - return containerStreams.First(); } + + if (preferredBitrate > 0 && bestMatch != null) return bestMatch; + if (firstInContainer != null) return firstInContainer; } + // Fallback: по настройкам качества var qualityPref = _libraryService?.Settings.QualityPreference ?? AudioQualityPreference.BestAvailable; - return qualityPref switch + if (qualityPref == AudioQualityPreference.Standard) { - AudioQualityPreference.BestAvailable => streams.FirstOrDefault(), - AudioQualityPreference.Standard => streams.FirstOrDefault(s => s.Container.Name == "mp4") - ?? streams.FirstOrDefault(), - _ => streams.FirstOrDefault(), - }; + // Предпочитаем mp4/m4a для совместимости + for (int i = 0; i < streams.Count; i++) + { + if (streams[i].Container.Name is "mp4" or "m4a") + return streams[i]; + } + } + + // По умолчанию — лучший битрейт (первый в списке, т.к. отсортирован) + return streams.Count > 0 ? streams[0] : null; } + #endregion private static string DetermineCodec(string container, AudioOnlyStreamInfo stream) @@ -400,94 +706,174 @@ private static string DetermineCodec(string container, AudioOnlyStreamInfo strea if (!string.IsNullOrEmpty(codecStr)) { - if (codecStr.Contains("opus", StringComparison.OrdinalIgnoreCase)) return "Opus"; - if (codecStr.Contains("aac", StringComparison.OrdinalIgnoreCase)) return "AAC"; - if (codecStr.Contains("mp4a", StringComparison.OrdinalIgnoreCase)) return "AAC"; - if (codecStr.Contains("vorbis", StringComparison.OrdinalIgnoreCase)) return "Vorbis"; + var span = codecStr.AsSpan(); + if (span.Contains("opus", StringComparison.OrdinalIgnoreCase)) return "Opus"; + if (span.Contains("aac", StringComparison.OrdinalIgnoreCase)) return "AAC"; + if (span.Contains("mp4a", StringComparison.OrdinalIgnoreCase)) return "AAC"; + if (span.Contains("vorbis", StringComparison.OrdinalIgnoreCase)) return "Vorbis"; } - return container.ToLower() switch + return container switch { "webm" => "Opus", - "mp4" => "AAC", - "m4a" => "AAC", - _ => container.ToUpper() + "mp4" or "m4a" => "AAC", + _ => container.ToUpperInvariant() }; } + /// + /// Возвращает доступные форматы для трека. + /// Для HLS-only треков возвращает только HLS. + /// public async Task> GetStreamOptionsAsync(string videoId) { if (!IsReady || string.IsNullOrWhiteSpace(videoId)) return []; try { + // Проверяем, HLS-only ли этот трек + var track = _trackRegistry.TryGet($"yt_{videoId}"); + if (track?.IsHlsOnly == true) + { + // Для HLS-only треков — только один вариант + return + [ + new StreamOption + { + Container = "m3u8", + Bitrate = 128, + Codec = "HLS (Adaptive)", + SizeMb = 0, + IsActive = true + } + ]; + } + var vId = VideoId.Parse(videoId); var manifest = await _youtube.Videos.Streams.GetManifestAsync(vId); - return [.. manifest.GetAudioOnlyStreams() + var audioStreams = manifest.GetAudioOnlyStreams() .OrderByDescending(s => s.Bitrate) - .Select(s => new StreamOption + .ToList(); + + if (audioStreams.Count == 0) + { + // Нет стримов — только HLS + return + [ + new StreamOption + { + Container = "m3u8", + Bitrate = 128, + Codec = "HLS (Adaptive)", + SizeMb = 0 + } + ]; + } + + var result = new List(audioStreams.Count); + for (int i = 0; i < audioStreams.Count; i++) + { + var s = audioStreams[i]; + result.Add(new StreamOption { Container = s.Container.Name, Bitrate = s.Bitrate.KiloBitsPerSecond, Codec = DetermineCodec(s.Container.Name, s), SizeMb = s.Size.MegaBytes - })]; + }); + } + return result; } catch (Exception ex) { Log.Error($"[YouTube] GetStreamOptions error: {ex.Message}"); - return []; + + // При ошибке — только HLS + return + [ + new StreamOption + { + Container = "m3u8", + Bitrate = 128, + Codec = "HLS (Adaptive)", + SizeMb = 0 + } + ]; } } - #region Cache - private static string GenerateCacheKey(string videoId, string? container, int bitrate = 0) + + [MethodImpl(MethodImplOptions.AggressiveInlining)] + private static string GenerateCacheKey(ReadOnlySpan videoId, string? container, int bitrate = 0) { - var key = string.IsNullOrEmpty(container) ? videoId : $"{videoId}_{container}"; - if (bitrate > 0) key += $"_{bitrate}"; - return key; + if (string.IsNullOrEmpty(container)) + return videoId.ToString(); + + if (bitrate > 0) + { + var bitrateStr = bitrate.ToString(); + return string.Create( + videoId.Length + 1 + container.Length + 1 + bitrateStr.Length, + (videoId: videoId.ToString(), container, bitrateStr), + static (span, state) => + { + int pos = 0; + state.videoId.AsSpan().CopyTo(span); + pos += state.videoId.Length; + span[pos++] = '_'; + state.container.AsSpan().CopyTo(span[pos..]); + pos += state.container.Length; + span[pos++] = '_'; + state.bitrateStr.AsSpan().CopyTo(span[pos..]); + }); + } + + return string.Create( + videoId.Length + 1 + container.Length, + (videoId: videoId.ToString(), container), + static (span, state) => + { + int pos = 0; + state.videoId.AsSpan().CopyTo(span); + pos += state.videoId.Length; + span[pos++] = '_'; + state.container.AsSpan().CopyTo(span[pos..]); + }); } + [MethodImpl(MethodImplOptions.AggressiveInlining)] private bool TryGetFromCache(string cacheKey, out StreamCacheEntry result) { - if (_streamCache.TryGetValue(cacheKey, out var cached)) + if (_streamCache.TryGetValue(cacheKey, out var cached) && !cached.IsExpired(_streamCacheLifetime)) { - if (DateTime.UtcNow - cached.Obtained < _streamCacheLifetime) - { - result = cached; - return true; - } - _streamCache.Remove(cacheKey); + result = cached; + return true; } - result = null!; + if (!cached.Equals(default(StreamCacheEntry))) + _streamCache.TryRemove(cacheKey, out _); + + result = default; return false; } + [MethodImpl(MethodImplOptions.AggressiveInlining)] private void CacheStreamUrl(string cacheKey, string url, long size, int bitrate, string codec, string container) { - _streamCache[cacheKey] = new StreamCacheEntry - { - Url = url, - Size = size, - Bitrate = bitrate, - Codec = codec, - Container = container, - Obtained = DateTime.UtcNow - }; + _streamCache[cacheKey] = new StreamCacheEntry(url, size, bitrate, codec, container); - if (_streamCache.Count > MaxCacheSize) CleanupExpiredCache(); + if (_streamCache.Count > MaxCacheSize) + CleanupExpiredCache(); } private void CleanupExpiredCache() { - var expired = _streamCache - .Where(kv => DateTime.UtcNow - kv.Value.Obtained > _streamCacheLifetime) - .Select(kv => kv.Key) - .ToList(); - - foreach (var key in expired) _streamCache.Remove(key); + foreach (var kvp in _streamCache) + { + if (kvp.Value.IsExpired(_streamCacheLifetime)) + _streamCache.TryRemove(kvp.Key, out _); + } } public void ClearCache() @@ -495,9 +881,11 @@ public void ClearCache() _streamCache.Clear(); Log.Info("[YouTube] Stream cache cleared"); } + #endregion - #region Search, Playlist, etc. + #region Search + public static QueryType DetectQueryType(string query) { if (string.IsNullOrWhiteSpace(query)) return QueryType.None; @@ -522,17 +910,27 @@ public static QueryType DetectQueryType(string query) try { return VideoId.TryParse(url)?.Value; } catch { return null; } } - private static string? ExtractVideoIdFromTrack(TrackInfo track) + [MethodImpl(MethodImplOptions.AggressiveInlining)] + private static ReadOnlySpan ExtractRawIdSpan(string trackId) { - string cleanId = track.Id?.Trim() ?? ""; - if (cleanId.StartsWith("yt_")) + var span = trackId.AsSpan().Trim(); + if (span.StartsWith("yt_pl_".AsSpan())) + return span[6..]; + if (span.StartsWith("yt_".AsSpan())) + return span[3..]; + return span; + } + + [MethodImpl(MethodImplOptions.AggressiveInlining)] + private static bool IsValidYoutubeIdChars(ReadOnlySpan id) + { + for (int i = 0; i < id.Length; i++) { - var rawId = cleanId[3..]; - var safeId = new string([.. rawId.Where(c => char.IsLetterOrDigit(c) || c == '_' || c == '-')]); - if (ValidYoutubeId.IsMatch(safeId)) return safeId; + var c = id[i]; + if (!char.IsLetterOrDigit(c) && c != '_' && c != '-') + return false; } - if (!string.IsNullOrWhiteSpace(track.Url)) return ExtractVideoId(track.Url); - return null; + return true; } public async Task GetTrackByUrlAsync(string url) @@ -551,51 +949,59 @@ public static QueryType DetectQueryType(string query) } } - #region Search - /// - /// Streaming search с пагинацией батчами. - /// public async IAsyncEnumerable> SearchStreamingAsync( - string query, - int maxResults = 300, - SearchFilter filter = SearchFilter.None, - [EnumeratorCancellation] CancellationToken ct = default) + string query, + int maxResults = 300, + SearchFilter filter = SearchFilter.None, + [EnumeratorCancellation] CancellationToken ct = default) { - if (!IsReady || string.IsNullOrWhiteSpace(query)) yield break; + if (!IsReady || string.IsNullOrWhiteSpace(query)) + yield break; + + // Проверка cooldown + try + { + ThrowIfInCooldown(); + } + catch (BotDetectionException ex) + { + NotifyError($"[YouTube] Search blocked: wait {ex.RemainingCooldown.TotalSeconds:F0}s"); + yield break; + } var sw = Stopwatch.StartNew(); int count = 0; bool isMusicFilter = filter.IsMusicContext(); - NotifyStatus($"[YouTube] Starting streaming search for '{query}' (Filter: {filter})..."); + NotifyStatus($"[YouTube] Streaming search '{query}' (Filter: {filter})..."); await foreach (var batch in _youtube.Search.GetResultBatchesAsync(query, filter, ct)) { if (ct.IsCancellationRequested) yield break; - var tracks = new List(); + // Проверяем cooldown между батчами + if (VideoController.IsInCooldown) + { + Log.Warn("[YouTube] Search interrupted by bot detection cooldown"); + yield break; + } - foreach (var result in batch.Items) + var tracks = new List(batch.Items.Count); + + for (int i = 0; i < batch.Items.Count && count < maxResults; i++) { - if (count >= maxResults) break; + if (batch.Items[i] is not TrackInfo rawTrack) continue; - if (result is TrackInfo rawTrack) - { - // Для музыкального фильтра принудительно ставим IsMusic - if (isMusicFilter) - { - rawTrack.IsMusic = true; - } + if (isMusicFilter) rawTrack.IsMusic = true; - var track = _trackRegistry.RegisterOrUpdate(rawTrack); - tracks.Add(track); - count++; - } + var track = _trackRegistry.RegisterOrUpdate(rawTrack); + tracks.Add(track); + count++; } if (tracks.Count > 0) { - NotifyStatus($"[YouTube] Got batch: +{tracks.Count} items (total: {count}) in {sw.ElapsedMilliseconds}ms"); + NotifyStatus($"[YouTube] +{tracks.Count} (total: {count}) in {sw.ElapsedMilliseconds}ms"); yield return tracks; } @@ -603,51 +1009,44 @@ public async IAsyncEnumerable> SearchStreamingAsync( } sw.Stop(); - NotifyStatus($"[YouTube] Search complete: {count} results in {sw.ElapsedMilliseconds}ms"); + NotifyStatus($"[YouTube] Search done: {count} results in {sw.ElapsedMilliseconds}ms"); } - /// - /// Быстрый поиск без пагинации. - /// public async Task> SearchFastAsync( - string query, - int maxResults = 100, - SearchFilter filter = SearchFilter.None, - CancellationToken ct = default) + string query, + int maxResults = 100, + SearchFilter filter = SearchFilter.None, + CancellationToken ct = default) { - if (!IsReady || string.IsNullOrWhiteSpace(query)) return []; + // ─── Проверка cooldown ─── + try + { + ThrowIfInCooldown(); + } + catch (BotDetectionException ex) + { + NotifyError($"[YouTube] Search blocked: wait {ex.RemainingCooldown.TotalSeconds:F0}s"); + return []; + } - var sw = Stopwatch.StartNew(); var results = new List(maxResults); - bool isMusicFilter = filter.IsMusicContext(); try { - // Используем GetResultBatchesAsync для поддержки всех типов фильтров - await foreach (var batch in _youtube.Search.GetResultBatchesAsync(query, filter, ct)) + await foreach (var batch in SearchStreamingAsync(query, maxResults, filter, ct)) { - foreach (var item in batch.Items) - { - if (results.Count >= maxResults) break; - - if (item is TrackInfo rawTrack) - { - if (isMusicFilter) rawTrack.IsMusic = true; - var track = _trackRegistry.RegisterOrUpdate(rawTrack); - results.Add(track); - } - } - + results.AddRange(batch); if (results.Count >= maxResults) break; } - - sw.Stop(); - NotifyStatus($"[YouTube] Fast search '{query}' (Filter: {filter}): {results.Count} results in {sw.ElapsedMilliseconds}ms"); } catch (OperationCanceledException) { NotifyStatus($"[YouTube] Search cancelled after {results.Count} results"); } + catch (BotDetectionException) + { + // Уже обработано + } catch (Exception ex) { NotifyError($"[YouTube] SearchFastAsync error: {ex.Message}"); @@ -656,34 +1055,35 @@ public async Task> SearchFastAsync( return results; } - /// - /// Простой поиск с фильтром по умолчанию (обратная совместимость). - /// - public async Task> SearchAsync( + public Task> SearchAsync( string query, int maxResults = 100, SearchFilter filter = SearchFilter.None) { - return await SearchFastAsync(query, maxResults, filter); + return SearchFastAsync(query, maxResults, filter); } + #endregion + + #region Search Session + public sealed class SearchSession : IDisposable { private readonly YoutubeClient _youtube; private readonly TrackRegistry _registry; private readonly string _query; private readonly int _maxResults; - private readonly SearchFilter _filter; private readonly HashSet _seenIds; private IAsyncEnumerator>? _enumerator; private bool _hasMore = true; - private bool _disposed; - private readonly List _buffer = []; + private volatile bool _disposed; + + private readonly Queue _buffer = new(); private readonly SemaphoreSlim _disposeLock = new(1, 1); public bool HasMore => (_hasMore || _buffer.Count > 0) && !_disposed && _seenIds.Count < _maxResults; public int LoadedCount => _seenIds.Count; - public SearchFilter Filter => _filter; + public SearchFilter Filter { get; } internal SearchSession( YoutubeClient youtube, @@ -697,15 +1097,17 @@ internal SearchSession( _registry = registry; _query = query; _maxResults = maxResults; - _filter = filter; - _seenIds = []; + Filter = filter; + _seenIds = new HashSet(64, StringComparer.Ordinal); if (skipTrackIds != null) { foreach (var id in skipTrackIds) { - var cleanId = id.StartsWith("yt_") ? id[3..] : id; - _seenIds.Add(cleanId); + var cleanId = id.AsSpan(); + if (cleanId.StartsWith("yt_".AsSpan())) + cleanId = cleanId[3..]; + _seenIds.Add(cleanId.ToString()); } } } @@ -714,22 +1116,19 @@ public async Task> FetchNextBatchAsync(int count = 50, Cancellat { if (_disposed || _seenIds.Count >= _maxResults) return []; - var results = new List(); + var results = new List(count); - // Берём из буфера - while (results.Count < count && _buffer.Count > 0) + while (_buffer.Count > 0 && results.Count < count) { - results.Add(_buffer[0]); - _buffer.RemoveAt(0); + results.Add(_buffer.Dequeue()); } - // Загружаем новые while (results.Count < count && _hasMore && _seenIds.Count < _maxResults) { try { _enumerator ??= _youtube.Search - .GetResultBatchesAsync(_query, _filter, ct) + .GetResultBatchesAsync(_query, Filter, ct) .GetAsyncEnumerator(ct); if (!await _enumerator.MoveNextAsync()) @@ -740,13 +1139,15 @@ public async Task> FetchNextBatchAsync(int count = 50, Cancellat var batch = _enumerator.Current; - foreach (var item in batch.Items) + for (int i = 0; i < batch.Items.Count; i++) { if (_seenIds.Count >= _maxResults) break; - if (item is TrackInfo tInfo) + if (batch.Items[i] is TrackInfo tInfo) { - var rawId = tInfo.Id.StartsWith("yt_") ? tInfo.Id[3..] : tInfo.Id; + var rawIdSpan = tInfo.GetRawIdSpan(); + var rawId = rawIdSpan.ToString(); + if (!_seenIds.Add(rawId)) continue; var track = _registry.RegisterOrUpdate(tInfo); @@ -754,14 +1155,7 @@ public async Task> FetchNextBatchAsync(int count = 50, Cancellat if (results.Count < count) results.Add(track); else - _buffer.Add(track); - } - else if (item is Playlist pInfo) - { - var rawId = pInfo.YoutubeId; - if (string.IsNullOrEmpty(rawId) || !_seenIds.Add(rawId)) continue; - - // Для плейлистов можно добавить конвертацию если нужно + _buffer.Enqueue(track); } } } @@ -790,17 +1184,10 @@ public void Dispose() _buffer.Clear(); _seenIds.Clear(); - // Синхронно ждём dispose enumerator if (_enumerator != null) { - try - { - _enumerator.DisposeAsync().AsTask().GetAwaiter().GetResult(); - } - catch (Exception ex) - { - Log.Warn($"[SearchSession] Dispose error: {ex.Message}"); - } + try { _enumerator.DisposeAsync().AsTask().GetAwaiter().GetResult(); } + catch (Exception ex) { Log.Warn($"[SearchSession] Dispose error: {ex.Message}"); } _enumerator = null; } } @@ -816,9 +1203,6 @@ public void Dispose() private SearchSession? _currentSearchSession; - /// - /// Создаёт новую поисковую сессию с заданными параметрами. - /// public SearchSession CreateSearchSession( string query, int maxResults = 300, @@ -827,14 +1211,10 @@ public SearchSession CreateSearchSession( { _currentSearchSession?.Dispose(); _currentSearchSession = new SearchSession(_youtube, _trackRegistry, query, maxResults, filter, skipTrackIds); - NotifyStatus($"[YouTube] Created search session for '{query}' (max: {maxResults}, filter: {filter})"); - + NotifyStatus($"[YouTube] Search session: '{query}' (max:{maxResults}, filter:{filter})"); return _currentSearchSession; } - /// - /// Выполняет поиск и возвращает начальные результаты вместе с сессией для пагинации. - /// public async Task<(List Tracks, SearchSession Session)> SearchWithSessionAsync( string query, int initialCount = 50, @@ -850,15 +1230,30 @@ public SearchSession CreateSearchSession( var tracks = await session.FetchNextBatchAsync(initialCount, ct); sw.Stop(); - NotifyStatus($"[YouTube] Initial search '{query}': {tracks.Count} results in {sw.ElapsedMilliseconds}ms (Filter: {filter})"); + NotifyStatus($"[YouTube] Initial '{query}': {tracks.Count} in {sw.ElapsedMilliseconds}ms (Filter: {filter})"); return (tracks, session); } + #endregion + #region Playlist, Channel, Radio, Download + public async Task<(string Name, List Tracks)?> GetPlaylistAsync(string url) { if (!IsReady) return null; + + // ─── Проверка cooldown ─── + try + { + ThrowIfInCooldown(); + } + catch (BotDetectionException ex) + { + NotifyError($"[YouTube] Playlist blocked: wait {ex.RemainingCooldown.TotalSeconds:F0}s"); + return null; + } + try { var playlistId = PlaylistId.TryParse(url); @@ -867,11 +1262,16 @@ public SearchSession CreateSearchSession( var playlist = await _youtube.Playlists.GetAsync(playlistId.Value); var tracks = await _youtube.Playlists.GetVideosAsync(playlistId.Value).CollectAsync(); - foreach (var t in tracks) _trackRegistry.RegisterOrUpdate(t); + for (int i = 0; i < tracks.Count; i++) + _trackRegistry.RegisterOrUpdate(tracks[i]); NotifyStatus($"[YouTube] Playlist '{playlist.Name}': {tracks.Count} tracks"); return (playlist.Name, tracks.ToList()); } + catch (BotDetectionException) + { + return null; + } catch (Exception ex) { NotifyError($"[YouTube] GetPlaylistAsync error: {ex.Message}"); @@ -879,12 +1279,24 @@ public SearchSession CreateSearchSession( } } - public async Task<(string ChannelName, List Playlists)?> GetChannelPlaylistsForSyncAsync(string channelUrl, CancellationToken ct = default) + public async Task<(string ChannelName, List Playlists)?> GetChannelPlaylistsForSyncAsync( + string channelUrl, CancellationToken ct = default) { + // ─── Проверка cooldown ─── + try + { + ThrowIfInCooldown(); + } + catch (BotDetectionException ex) + { + NotifyError($"[YouTube] Sync blocked: wait {ex.RemainingCooldown.TotalSeconds:F0}s"); + return null; + } + var channel = await GetChannelFromUrlAsync(channelUrl, ct); if (channel is null) return null; - NotifyStatus($"[YouTube] Fetching playlists from channel: {channel.Title}..."); + NotifyStatus($"[YouTube] Fetching playlists from: {channel.Title}..."); try { @@ -892,24 +1304,35 @@ public SearchSession CreateSearchSession( await foreach (var pl in _youtube.Channels.GetPlaylistsAsync(channel.Id, ct)) { + // Проверяем cooldown между запросами + if (VideoController.IsInCooldown) + { + Log.Warn("[YouTube] Channel sync interrupted by bot detection"); + break; + } + if (pl.Name.Equals("Uploads", StringComparison.OrdinalIgnoreCase)) continue; var thumbs = new List(); - if (!string.IsNullOrEmpty(pl.ThumbnailUrl)) thumbs.Add(new Thumbnail(pl.ThumbnailUrl, new Resolution(0, 0))); + if (!string.IsNullOrEmpty(pl.ThumbnailUrl)) + thumbs.Add(new Thumbnail(pl.ThumbnailUrl, new Resolution(0, 0))); - var auth = pl.Author != null ? new Author(new ChannelId(channel.Id.Value), pl.Author) : null; + var auth = pl.Author != null + ? new Author(new ChannelId(channel.Id.Value), pl.Author) + : null; results.Add(new PlaylistSearchResult( - new PlaylistId(pl.YoutubeId ?? ""), - pl.Name, - auth, - thumbs - )); + new PlaylistId(pl.YoutubeId ?? ""), + pl.Name, auth, thumbs)); } NotifyStatus($"[YouTube] Found {results.Count} playlists."); return (channel.Title, results); } + catch (BotDetectionException) + { + return (channel.Title, []); + } catch (Exception ex) { NotifyError($"[YouTube] Error parsing channel playlists: {ex.Message}"); @@ -923,8 +1346,20 @@ public static async Task> GetUserPlaylistsByAuthAsync() return await userDataService.GetMyPlaylistsAsync(); } - public async Task ImportPlaylistAsync(string playlistId, bool isAccountSync = false, CancellationToken ct = default) + public async Task ImportPlaylistAsync( + string playlistId, bool isAccountSync = false, CancellationToken ct = default) { + // ─── Проверка cooldown ─── + try + { + ThrowIfInCooldown(); + } + catch (BotDetectionException ex) + { + NotifyError($"[YouTube] Import blocked: wait {ex.RemainingCooldown.TotalSeconds:F0}s"); + return null; + } + try { var plId = new PlaylistId(playlistId); @@ -934,16 +1369,19 @@ public static async Task> GetUserPlaylistsByAuthAsync() var tracks = await _youtube.Playlists.GetVideosAsync(plId, ct).CollectAsync(); - foreach (var track in tracks) + for (int i = 0; i < tracks.Count; i++) { + var track = tracks[i]; if (_libraryService != null) - { await _libraryService.AddOrUpdateTrackAsync(track, ct); - } playlist.TrackIds.Add(track.Id); } return playlist; } + catch (BotDetectionException) + { + return null; + } catch (Exception ex) { NotifyError($"Error importing playlist {playlistId}: {ex.Message}"); @@ -951,39 +1389,45 @@ public static async Task> GetUserPlaylistsByAuthAsync() } } - public async Task<(string Name, string AvatarUrl)?> GetChannelInfoAsync(string url, CancellationToken ct = default) + public async Task<(string Name, string AvatarUrl)?> GetChannelInfoAsync( + string url, CancellationToken ct = default) { var channel = await GetChannelFromUrlAsync(url, ct); if (channel == null) return null; - return (channel.Title, channel.Thumbnails.OrderByDescending(t => t.Resolution.Width).FirstOrDefault()?.Url ?? ""); + + string avatar = ""; + int maxWidth = 0; + for (int i = 0; i < channel.Thumbnails.Count; i++) + { + if (channel.Thumbnails[i].Resolution.Width > maxWidth) + { + maxWidth = channel.Thumbnails[i].Resolution.Width; + avatar = channel.Thumbnails[i].Url ?? ""; + } + } + + return (channel.Title, avatar); } private async Task GetChannelFromUrlAsync(string url, CancellationToken ct = default) { try { - if (url.Contains("/channel/")) - { - var id = url.Split("/channel/")[1].Split('/')[0].Split('?')[0]; - return await _youtube.Channels.GetAsync(new ChannelId(id), ct); - } - if (url.Contains("/@")) - { - var handle = url.Split("/@")[1].Split('/')[0].Split('?')[0]; + var span = url.AsSpan(); + + if (TryExtractSegment(span, "/channel/", out var channelId)) + return await _youtube.Channels.GetAsync(new ChannelId(channelId), ct); + + if (TryExtractSegment(span, "/@", out var handle)) return await _youtube.Channels.GetByHandleAsync(new ChannelHandle(handle), ct); - } - if (url.Contains("/c/")) - { - var slug = url.Split("/c/")[1].Split('/')[0].Split('?')[0]; + + if (TryExtractSegment(span, "/c/", out var slug)) return await _youtube.Channels.GetBySlugAsync(new ChannelSlug(slug), ct); - } - if (url.Contains("/user/")) - { - var user = url.Split("/user/")[1].Split('/')[0].Split('?')[0]; + + if (TryExtractSegment(span, "/user/", out var user)) return await _youtube.Channels.GetByUserAsync(new UserName(user), ct); - } - NotifyError("[YouTube] Could not recognize channel URL format."); + NotifyError("[YouTube] Unrecognized channel URL format."); return null; } catch (Exception ex) @@ -993,32 +1437,113 @@ public static async Task> GetUserPlaylistsByAuthAsync() } } + [MethodImpl(MethodImplOptions.AggressiveInlining)] + private static bool TryExtractSegment(ReadOnlySpan url, ReadOnlySpan pattern, out string result) + { + int idx = url.IndexOf(pattern); + if (idx < 0) + { + result = ""; + return false; + } + + var after = url[(idx + pattern.Length)..]; + + int endSlash = after.IndexOf('/'); + int endQuery = after.IndexOf('?'); + + int end = (endSlash, endQuery) switch + { + ( >= 0, >= 0) => Math.Min(endSlash, endQuery), + ( >= 0, _) => endSlash, + (_, >= 0) => endQuery, + _ => after.Length + }; + + result = after[..end].ToString(); + return result.Length > 0; + } + + public async Task> GetRadioAsync(TrackInfo sourceTrack, int count = 25) { - if (!IsReady || string.IsNullOrEmpty(sourceTrack.Url)) return []; + if (!IsReady || string.IsNullOrEmpty(sourceTrack.Url)) + return []; + + // ─── Проверка cooldown ─── + try + { + ThrowIfInCooldown(); + } + catch (BotDetectionException ex) + { + NotifyError($"[YouTube] Radio blocked: wait {ex.RemainingCooldown.TotalSeconds:F0}s"); + return []; + } + try { - var videoId = ExtractVideoId(sourceTrack.Url); - if (string.IsNullOrEmpty(videoId)) return []; + var videoIdSpan = sourceTrack.GetRawIdSpan(); + if (videoIdSpan.IsEmpty) return []; + + var videoId = videoIdSpan.ToString(); var mixUrl = $"https://www.youtube.com/watch?v={videoId}&list=RD{videoId}"; var result = await GetPlaylistAsync(mixUrl); if (result == null) return []; - var tracks = result.Value.Tracks.Take(count).ToList(); - foreach (var t in tracks) t.RadioSeedId = sourceTrack.Id; - return tracks; + var tracks = result.Value.Tracks; + int take = Math.Min(count, tracks.Count); + var output = new List(take); + + for (int i = 0; i < take; i++) + { + tracks[i].RadioSeedId = sourceTrack.Id; + output.Add(tracks[i]); + } + + return output; + } + catch (BotDetectionException) + { + return []; + } + catch + { + return []; } - catch { return []; } } public async Task> GetTrendingAsync(int count = 20) { + // ─── Проверка cooldown ─── + try + { + ThrowIfInCooldown(); + } + catch (BotDetectionException ex) + { + NotifyError($"[YouTube] Trending blocked: wait {ex.RemainingCooldown.TotalSeconds:F0}s"); + return []; + } + try { var url = "https://music.youtube.com/playlist?list=RDCLAK5uy_kmPRjHDECIcuVwnKsx2Ng7fyNgFKWNJFs"; var result = await GetPlaylistAsync(url); - return result?.Tracks.Take(count).ToList() ?? await SearchAsync("top music 2024", count); + + if (result != null) + { + var tracks = result.Value.Tracks; + int take = Math.Min(count, tracks.Count); + return tracks.GetRange(0, take); + } + + return await SearchAsync("top music 2024", count); + } + catch (BotDetectionException) + { + return []; } catch { @@ -1027,17 +1552,29 @@ public async Task> GetTrendingAsync(int count = 20) } public async Task DownloadTrackAsync( - TrackInfo track, - IProgress? progress = null, - CancellationToken ct = default) + TrackInfo track, + IProgress? progress = null, + CancellationToken ct = default) { if (!IsReady || string.IsNullOrEmpty(track.Url)) return null; + + // ─── Проверка cooldown ─── try { - var videoId = ExtractVideoId(track.Url); - if (string.IsNullOrEmpty(videoId)) return null; + ThrowIfInCooldown(); + } + catch (BotDetectionException ex) + { + NotifyError($"[YouTube] Download blocked: wait {ex.RemainingCooldown.TotalSeconds:F0}s"); + return null; + } - var vId = VideoId.Parse(videoId); + try + { + var videoIdSpan = track.GetRawIdSpan(); + if (videoIdSpan.IsEmpty) return null; + + var vId = VideoId.Parse(videoIdSpan.ToString()); var manifest = await _youtube.Videos.Streams.GetManifestAsync(vId, ct); var stream = manifest.GetAudioOnlyStreams().GetWithHighestBitrate(); @@ -1046,12 +1583,18 @@ public async Task> GetTrendingAsync(int count = 20) var fileName = SanitizeFileName($"{track.Author} - {track.Title}.{stream.Container.Name}"); var filePath = Path.Combine(G.Folder.Downloads, fileName); - var prog = progress != null ? new Progress(p => progress.Report((float)p)) : null; + var prog = progress != null + ? new Progress(p => progress.Report((float)p)) + : null; await _youtube.Videos.Streams.DownloadAsync(stream, filePath, progress: prog, cancellationToken: ct); NotifyStatus($"[YouTube] Downloaded: {fileName}"); return filePath; } + catch (BotDetectionException) + { + return null; + } catch (Exception ex) { NotifyError($"[YouTube] Download error: {ex.Message}"); @@ -1062,92 +1605,79 @@ public async Task> GetTrendingAsync(int count = 20) #endregion #region Helpers - private static TrackInfo ConvertPlaylistToTrackInfo(Playlist playlist) - { - return new TrackInfo - { - Id = playlist.Id, - Title = playlist.Name, - Author = playlist.Author ?? "Unknown Playlist", - Url = playlist.Url, - Duration = TimeSpan.Zero, - ThumbnailUrl = playlist.ThumbnailUrl ?? "", - IsMusic = false, - }; - } - private static TrackInfo ConvertToTrackInfo(Video video) + private static string SanitizeFileName(string name) { - var thumb = video.Thumbnails.OrderByDescending(t => t.Resolution.Width).FirstOrDefault(); - return new TrackInfo - { - Id = $"yt_{video.Id.Value}", - Title = video.Title, - Author = video.Author.ChannelTitle, - Url = video.Url, - Duration = video.Duration ?? TimeSpan.Zero, - ThumbnailUrl = thumb?.Url ?? "" - }; - } + var invalid = Path.GetInvalidFileNameChars(); - private static TrackInfo ConvertSearchResultToTrackInfo(VideoSearchResult video) - { - var thumb = video.Thumbnails.OrderByDescending(t => t.Resolution.Width).Skip(1).FirstOrDefault(); - return new TrackInfo - { - Id = $"yt_{video.Id.Value}", - Title = video.Title, - Author = video.Author.ChannelTitle, - Url = video.Url, - Duration = video.Duration ?? TimeSpan.Zero, - ThumbnailUrl = thumb?.Url ?? "", - IsOfficialArtist = video.IsOfficialArtist, - IsMusic = video.IsMusic - }; - } + Span buffer = name.Length <= 256 + ? stackalloc char[name.Length] + : new char[name.Length]; - private static TrackInfo ConvertPlaylistVideoToTrackInfo(PlaylistVideo video) - { - var thumb = video.Thumbnails.OrderByDescending(t => t.Resolution.Width).Skip(1).FirstOrDefault(); - return new TrackInfo - { - Id = $"yt_{video.Id.Value}", - Title = video.Title, - Author = video.Author.ChannelTitle, - Url = video.Url, - Duration = video.Duration ?? TimeSpan.Zero, - ThumbnailUrl = thumb?.Url ?? "" - }; + int pos = 0; + for (int i = 0; i < name.Length && pos < 200; i++) + { + var c = name[i]; + if (Array.IndexOf(invalid, c) < 0) + buffer[pos++] = c; + } + + return new string(buffer[..pos]); } - private static string SanitizeFileName(string name) + [MethodImpl(MethodImplOptions.AggressiveInlining)] + private static string? GetBestThumbnailUrl(IReadOnlyList thumbnails) { - var invalid = Path.GetInvalidFileNameChars(); - var sanitized = new string([.. name.Where(c => !invalid.Contains(c))]); - return sanitized.Length > 200 ? sanitized[..200] : sanitized; + if (thumbnails.Count == 0) return null; + + string? best = null; + int bestArea = -1; + + for (int i = 0; i < thumbnails.Count; i++) + { + int area = thumbnails[i].Resolution.Area; + if (area > bestArea) + { + bestArea = area; + best = thumbnails[i].Url; + } + } + + return best; } + [MethodImpl(MethodImplOptions.AggressiveInlining)] private void NotifyStatus(string message) { Log.Info(message); OnStatusChanged?.Invoke(message); } + [MethodImpl(MethodImplOptions.AggressiveInlining)] private void NotifyError(string message) { Log.Error(message); OnError?.Invoke(message); } + [MethodImpl(MethodImplOptions.AggressiveInlining)] + private static string GenerateCacheKeyFromString(string videoId, string? container, int bitrate = 0) + { + return GenerateCacheKey(videoId.AsSpan(), container, bitrate); + } + public void Dispose() { if (_disposed) return; _disposed = true; - _cookieAuth?.OnAuthStateChanged -= ReloadClient; + AuthService?.OnAuthStateChanged -= ReloadClient; - // КРИТИЧНО: Освобождаем все ресурсы DisposeCurrentClient(); + + _currentHandler?.Dispose(); + _currentHandler = null; + _streamCache.Clear(); GC.SuppressFinalize(this); @@ -1166,6 +1696,7 @@ public void Dispose() [GeneratedRegex(@"^[a-zA-Z0-9_-]{11}$", RegexOptions.Compiled)] private static partial Regex _ValidYoutubeId(); + #endregion } @@ -1179,14 +1710,10 @@ public class StreamOption : ReactiveObject public string DisplayName => $"{Codec} {string.Format(LocalizationService.Instance.Get("Stream_Bitrate"), Bitrate)} ({Container})"; public string SizeMbFormatted => string.Format( - LocalizationService.Instance.Get("Stream_Format_Mb", "{0:F1} MB"), - SizeMb); + LocalizationService.Instance.Get("Stream_Format_Mb", "{0:F1} MB"), + SizeMb); [Reactive] public bool IsDownloaded { get; set; } - - /// - /// Текущий активный формат (который сейчас воспроизводится). - /// [Reactive] public bool IsActive { get; set; } } diff --git a/Core/Services/YoutubeUserDataService.cs b/Core/Services/YoutubeUserDataService.cs index 8211ea9..c6880ae 100644 --- a/Core/Services/YoutubeUserDataService.cs +++ b/Core/Services/YoutubeUserDataService.cs @@ -129,7 +129,7 @@ public async Task CreatePlaylistAsync(string title, string description = return await _provider.CreatePlaylistAsync(title) ?? throw new Exception("Create failed"); } - public async Task DeletePlaylistAsync(string youtubePlaylistId) + public static async Task DeletePlaylistAsync(string youtubePlaylistId) { await Task.CompletedTask; } diff --git a/Core/ViewModels/PaginatedViewModel.cs b/Core/ViewModels/PaginatedViewModel.cs index aa6f4b7..6f3595b 100644 --- a/Core/ViewModels/PaginatedViewModel.cs +++ b/Core/ViewModels/PaginatedViewModel.cs @@ -28,9 +28,6 @@ public abstract class PaginatedViewModel : ViewModelBase, I private CancellationTokenSource? _loadCts; private bool _canFetchMore; private bool _isDisposed; - private int _totalSourceCount; - - private string _filterQuery = string.Empty; #endregion @@ -50,12 +47,12 @@ public abstract class PaginatedViewModel : ViewModelBase, I public string FilterQuery { - get => _filterQuery; - set => this.RaiseAndSetIfChanged(ref _filterQuery, value); - } + get; + set => this.RaiseAndSetIfChanged(ref field, value); + } = string.Empty; public ReadOnlyObservableCollection Items => _items; - protected int TotalCount => _totalSourceCount; + protected int TotalCount { get; private set; } public ReactiveCommand LoadMoreCommand { get; } @@ -72,7 +69,7 @@ protected PaginatedViewModel() .Throttle(TimeSpan.FromMilliseconds(200)) .ObserveOn(RxApp.TaskpoolScheduler) .Select(query => BuildFilterPredicate(query)) - .StartWith(BuildFilterPredicate(_filterQuery)); + .StartWith(BuildFilterPredicate(FilterQuery)); _sourceList.Connect() .Filter(filterPredicate) @@ -170,10 +167,10 @@ protected async Task InitializeItemsAsync(IEnumerable items, bool canFe innerList.AddRange(itemsList); }); - _totalSourceCount = _sourceList.Count; + TotalCount = _sourceList.Count; UpdateState(); - if (_totalSourceCount == 0 && canFetchMore) + if (TotalCount == 0 && canFetchMore) { await LoadNextBatchAsync(); } @@ -182,7 +179,7 @@ protected async Task InitializeItemsAsync(IEnumerable items, bool canFe protected void ClearItems() { _sourceList.Clear(); - _totalSourceCount = 0; + TotalCount = 0; _canFetchMore = false; UpdateState(); } @@ -207,7 +204,7 @@ protected void CancelLoading() private void UpdateState() { HasMoreItems = _canFetchMore; - ReachedEnd = !_canFetchMore && _totalSourceCount > 0; + ReachedEnd = !_canFetchMore && TotalCount > 0; } protected void SetCanFetchMore(bool value) @@ -242,7 +239,7 @@ private async Task LoadNextBatchAsync() if (!existingIds.Contains(GetItemId(item))) { list.Add(item); - _totalSourceCount++; + TotalCount++; } } }); diff --git a/Core/ViewModels/ReorderableViewModel.cs b/Core/ViewModels/ReorderableViewModel.cs index 949c7ce..3fa01ce 100644 --- a/Core/ViewModels/ReorderableViewModel.cs +++ b/Core/ViewModels/ReorderableViewModel.cs @@ -19,12 +19,8 @@ public abstract class ReorderableViewModel : ViewModelBase, private List _masterIds = []; private readonly Dictionary _loadedSources = []; private readonly Dictionary _vmCache = []; - private readonly ObservableCollection _visibleItems = []; - private CancellationTokenSource? _loadCts; - private int _loadedCount; private bool _isDisposed; - private string _filterQuery = string.Empty; #endregion @@ -42,21 +38,21 @@ public abstract class ReorderableViewModel : ViewModelBase, public string FilterQuery { - get => _filterQuery; + get; set { - if (_filterQuery == value) return; - this.RaiseAndSetIfChanged(ref _filterQuery, value); + if (field == value) return; + this.RaiseAndSetIfChanged(ref field, value); RebuildVisibleItems(); } - } + } = string.Empty; - public ObservableCollection Items => _visibleItems; + public ObservableCollection Items { get; } = []; protected int TotalCount => _masterIds.Count; - protected int LoadedCount => _loadedCount; + protected int LoadedCount { get; private set; } - public bool CanReorder => string.IsNullOrWhiteSpace(_filterQuery); + public bool CanReorder => string.IsNullOrWhiteSpace(FilterQuery); public ReactiveCommand LoadMoreCommand { get; } @@ -102,12 +98,12 @@ protected async Task InitializeAsync(List allIds, CancellationToken ct = _masterIds = [.. allIds]; _loadedSources.Clear(); - _loadedCount = 0; + LoadedCount = 0; foreach (var vm in _vmCache.Values) vm.Dispose(); _vmCache.Clear(); - _visibleItems.Clear(); + Items.Clear(); UpdateState(); @@ -131,12 +127,12 @@ protected void InitializeWithData(IEnumerable items) { _loadedSources[GetItemId(item)] = item; } - _loadedCount = itemsList.Count; + LoadedCount = itemsList.Count; foreach (var vm in _vmCache.Values) vm.Dispose(); _vmCache.Clear(); - _visibleItems.Clear(); + Items.Clear(); RebuildVisibleItems(); UpdateState(); @@ -148,7 +144,7 @@ protected void InitializeWithData(IEnumerable items) private async Task LoadNextBatchAsync() { - if (_isDisposed || IsLoadingMore || _loadedCount >= _masterIds.Count) + if (_isDisposed || IsLoadingMore || LoadedCount >= _masterIds.Count) return; IsLoadingMore = true; @@ -158,14 +154,14 @@ private async Task LoadNextBatchAsync() var ct = _loadCts?.Token ?? CancellationToken.None; var idsToLoad = _masterIds - .Skip(_loadedCount) + .Skip(LoadedCount) .Take(BatchSize) .Where(id => !_loadedSources.ContainsKey(id)) .ToList(); if (idsToLoad.Count == 0) { - _loadedCount = _masterIds.Count; + LoadedCount = _masterIds.Count; UpdateState(); return; } @@ -179,9 +175,9 @@ private async Task LoadNextBatchAsync() _loadedSources[id] = item; } - _loadedCount += BatchSize; - if (_loadedCount > _masterIds.Count) - _loadedCount = _masterIds.Count; + LoadedCount += BatchSize; + if (LoadedCount > _masterIds.Count) + LoadedCount = _masterIds.Count; AppendNewItemsToVisible(loaded); UpdateState(); @@ -198,7 +194,7 @@ private async Task LoadNextBatchAsync() private void AppendNewItemsToVisible(IEnumerable newItems) { - var query = _filterQuery; + var query = FilterQuery; foreach (var item in newItems) { if (!MatchesFilter(item, query)) continue; @@ -210,28 +206,28 @@ private void AppendNewItemsToVisible(IEnumerable newItems) _vmCache[id] = vm; int insertIndex = FindInsertIndex(id); - if (insertIndex >= 0 && insertIndex <= _visibleItems.Count) - _visibleItems.Insert(insertIndex, vm); + if (insertIndex >= 0 && insertIndex <= Items.Count) + Items.Insert(insertIndex, vm); else - _visibleItems.Add(vm); + Items.Add(vm); } } private int FindInsertIndex(string itemId) { int masterIndex = _masterIds.IndexOf(itemId); - if (masterIndex < 0) return _visibleItems.Count; + if (masterIndex < 0) return Items.Count; - for (int i = 0; i < _visibleItems.Count; i++) + for (int i = 0; i < Items.Count; i++) { - var existingId = GetVmId(_visibleItems[i]); + var existingId = GetVmId(Items[i]); int existingMasterIndex = _masterIds.IndexOf(existingId); if (existingMasterIndex > masterIndex) return i; } - return _visibleItems.Count; + return Items.Count; } private string GetVmId(TViewModel vm) @@ -250,7 +246,7 @@ private string GetVmId(TViewModel vm) protected void RebuildVisibleItems() { - var query = _filterQuery; + var query = FilterQuery; var newVisible = new List(); foreach (var id in _masterIds) @@ -275,19 +271,19 @@ protected void RebuildVisibleItems() private void SyncVisibleItems(List newItems) { - while (_visibleItems.Count > newItems.Count) - _visibleItems.RemoveAt(_visibleItems.Count - 1); + while (Items.Count > newItems.Count) + Items.RemoveAt(Items.Count - 1); for (int i = 0; i < newItems.Count; i++) { - if (i < _visibleItems.Count) + if (i < Items.Count) { - if (!ReferenceEquals(_visibleItems[i], newItems[i])) - _visibleItems[i] = newItems[i]; + if (!ReferenceEquals(Items[i], newItems[i])) + Items[i] = newItems[i]; } else { - _visibleItems.Add(newItems[i]); + Items.Add(newItems[i]); } } } @@ -299,8 +295,8 @@ private void SyncVisibleItems(List newItems) public void MoveItem(int oldIndex, int newIndex) { if (oldIndex == newIndex) return; - if (oldIndex < 0 || oldIndex >= _visibleItems.Count) return; - if (newIndex < 0 || newIndex >= _visibleItems.Count) return; + if (oldIndex < 0 || oldIndex >= Items.Count) return; + if (newIndex < 0 || newIndex >= Items.Count) return; if (!CanReorder) { @@ -308,7 +304,7 @@ public void MoveItem(int oldIndex, int newIndex) return; } - var movingVm = _visibleItems[oldIndex]; + var movingVm = Items[oldIndex]; var movingId = GetVmId(movingVm); if (string.IsNullOrEmpty(movingId)) return; @@ -317,14 +313,14 @@ public void MoveItem(int oldIndex, int newIndex) _masterIds.RemoveAt(oldIndex); _masterIds.Insert(newIndex, movingId); - _visibleItems.Move(oldIndex, newIndex); + Items.Move(oldIndex, newIndex); } public async Task MoveItemAsync(int oldIndex, int newIndex) { if (oldIndex == newIndex) return; - if (oldIndex < 0 || oldIndex >= _visibleItems.Count) return; - if (newIndex < 0 || newIndex >= _visibleItems.Count) return; + if (oldIndex < 0 || oldIndex >= Items.Count) return; + if (newIndex < 0 || newIndex >= Items.Count) return; if (!CanReorder) { @@ -332,7 +328,7 @@ public async Task MoveItemAsync(int oldIndex, int newIndex) return; } - var movingVm = _visibleItems[oldIndex]; + var movingVm = Items[oldIndex]; var movingId = GetVmId(movingVm); if (string.IsNullOrEmpty(movingId)) return; @@ -340,7 +336,7 @@ public async Task MoveItemAsync(int oldIndex, int newIndex) _masterIds.RemoveAt(oldIndex); _masterIds.Insert(newIndex, movingId); - _visibleItems.Move(oldIndex, newIndex); + Items.Move(oldIndex, newIndex); try { @@ -352,7 +348,7 @@ public async Task MoveItemAsync(int oldIndex, int newIndex) Log.Error($"[Move] Save failed: {ex.Message}"); _masterIds.RemoveAt(newIndex); _masterIds.Insert(oldIndex, movingId); - _visibleItems.Move(newIndex, oldIndex); + Items.Move(newIndex, oldIndex); } } @@ -371,7 +367,7 @@ protected void CancelLoading() private void UpdateState() { - HasMoreItems = _loadedCount < _masterIds.Count; + HasMoreItems = LoadedCount < _masterIds.Count; ReachedEnd = !HasMoreItems && _masterIds.Count > 0; } @@ -399,7 +395,7 @@ protected override void Dispose(bool disposing) CancelLoading(); _vmCache.Clear(); - _visibleItems.Clear(); + Items.Clear(); _loadedSources.Clear(); _masterIds.Clear(); } diff --git a/Core/ViewModels/ViewModelBase.cs b/Core/ViewModels/ViewModelBase.cs index a2d36f9..d9f78b3 100644 --- a/Core/ViewModels/ViewModelBase.cs +++ b/Core/ViewModels/ViewModelBase.cs @@ -6,11 +6,99 @@ namespace LMP.Core.ViewModels; public abstract class ViewModelBase : ReactiveObject, IDisposable { - // Статическое для кода + #region Static Lifecycle + + private static readonly Lock _lifecycleLock = new(); + private static readonly List> _instances = []; + private static volatile bool _isSuspended; + + /// + /// Приложение в режиме suspend (окно свёрнуто или неактивно долго). + /// + public static bool IsSuspended => _isSuspended; + + /// + /// Вызывается из MainWindow при сворачивании. + /// Уведомляет все живые ViewModel-и через OnSuspend(). + /// ВАЖНО: вызывать на UI-потоке (DispatcherTimer.Stop требует UI). + /// + public static void BroadcastSuspend() + { + if (_isSuspended) return; + _isSuspended = true; + + var alive = CollectAlive(); + + Log.Debug($"[Lifecycle] Suspend → {alive.Count} VMs"); + + foreach (var vm in alive) + { + try { vm.OnSuspend(); } + catch (Exception ex) + { + Log.Warn($"[Lifecycle] OnSuspend error in {vm.GetType().Name}: {ex.Message}"); + } + } + } + + /// + /// Вызывается из MainWindow при разворачивании. + /// Уведомляет все живые ViewModel-и через OnResume(). + /// ВАЖНО: вызывать на UI-потоке. + /// + public static void BroadcastResume() + { + if (!_isSuspended) return; + _isSuspended = false; + + var alive = CollectAlive(); + + Log.Debug($"[Lifecycle] Resume → {alive.Count} VMs"); + + foreach (var vm in alive) + { + try { vm.OnResume(); } + catch (Exception ex) + { + Log.Warn($"[Lifecycle] OnResume error in {vm.GetType().Name}: {ex.Message}"); + } + } + } + + /// + /// Собирает живые экземпляры, очищая мёртвые WeakReference. + /// + private static List CollectAlive() + { + lock (_lifecycleLock) + { + _instances.RemoveAll(static wr => !wr.TryGetTarget(out _)); + + var result = new List(_instances.Count); + foreach (var wr in _instances) + { + if (wr.TryGetTarget(out var vm)) + result.Add(vm); + } + return result; + } + } + + #endregion + + #region Localization Shortcuts + + /// Статическое для кода. public static LocalizationService SL => LocalizationService.Instance; - - // Нестатическое для XAML биндинга (через DataContext) + + /// Нестатическое для XAML биндинга (через DataContext). +#pragma warning disable CA1822 // Пометьте члены как статические public LocalizationService L => LocalizationService.Instance; +#pragma warning restore CA1822 // Пометьте члены как статические + + #endregion + + #region Instance /// /// Контейнер для всех подписок и IDisposable объектов. @@ -20,33 +108,62 @@ public abstract class ViewModelBase : ReactiveObject, IDisposable private bool _isDisposed; + protected ViewModelBase() + { + // Регистрируемся для lifecycle-уведомлений через WeakReference. + // Если VM собран GC без Dispose — ничего страшного, WeakRef умрёт. + lock (_lifecycleLock) + { + _instances.Add(new WeakReference(this)); + } + } + + #endregion + + #region Lifecycle — переопределяйте в наследниках + + /// + /// Окно свёрнуто или неактивно. + /// Остановите таймеры, пропускайте обновления UI, + /// освободите некритичные кэши. + /// Вызывается на UI-потоке. + /// + protected virtual void OnSuspend() { } + + /// + /// Окно развёрнуто и активно. + /// Запустите таймеры, обновите UI. + /// Вызывается на UI-потоке. + /// + protected virtual void OnResume() { } + + #endregion + + #region Command Helper + /// - /// Универсальный helper-метод для создания ReactiveCommand. - /// Гарантирует подписку на ThrownExceptions для предотвращения утечек памяти + /// Универсальный helper для ReactiveCommand. + /// Гарантирует подписку на ThrownExceptions (предотвращает утечку памяти) /// и регистрирует команду для автоматической очистки. /// - /// - /// ThrownExceptions subscription to prevent memory leak. - /// ReactiveCommand внутри использует ScheduledSubject для ThrownExceptions. - /// Если на него никто не подписан, исключения накапливаются в ConcurrentQueue, - /// которая держит ссылку на команду, создавая циклическую зависимость. - /// protected TCommand CreateCommand(TCommand command) where TCommand : IReactiveCommand { - // 1. Подписываемся на ошибки, чтобы очистить внутреннюю очередь исключений command.ThrownExceptions .Subscribe(ex => Log.Error($"[{GetType().Name}] Command error: {ex.Message}")) .DisposeWith(Disposables); - - // 2. Если команда реализует IDisposable, добавляем её в общий список очистки + if (command is IDisposable disposable) { disposable.DisposeWith(Disposables); } - + return command; } + #endregion + + #region IDisposable + public void Dispose() { Dispose(true); @@ -58,9 +175,10 @@ protected virtual void Dispose(bool disposing) if (_isDisposed) return; if (disposing) { - // Очищаем все подписки и команды, зарегистрированные в этом ViewModel Disposables.Dispose(); } _isDisposed = true; } + + #endregion } \ No newline at end of file diff --git a/Core/Youtube/Bridge/ChannelPlaylistsResponse.cs b/Core/Youtube/Bridge/ChannelPlaylistsResponse.cs index 64cb2f0..c03885c 100644 --- a/Core/Youtube/Bridge/ChannelPlaylistsResponse.cs +++ b/Core/Youtube/Bridge/ChannelPlaylistsResponse.cs @@ -24,7 +24,7 @@ internal class ChannelPlaylistsResponse(JsonElement content) ?.GetPropertyOrNull("token") ?.GetStringOrNull(); - private IEnumerable ParsePlaylists(JsonElement root) + private static IEnumerable ParsePlaylists(JsonElement root) { var tabs = root.GetPropertyOrNull("contents") ?.GetPropertyOrNull("twoColumnBrowseResultsRenderer") @@ -104,7 +104,7 @@ private static IEnumerable ParseSectionList(JsonElement sectionList) } } - private IEnumerable ParseRichGrid(JsonElement richGrid) + private static IEnumerable ParseRichGrid(JsonElement richGrid) { var contents = richGrid.GetPropertyOrNull("contents"); if (contents == null) yield break; diff --git a/Core/Youtube/Bridge/Common/DecryptorCache.cs b/Core/Youtube/Bridge/Common/DecryptorCache.cs new file mode 100644 index 0000000..b7a71e5 --- /dev/null +++ b/Core/Youtube/Bridge/Common/DecryptorCache.cs @@ -0,0 +1,163 @@ +using System.Collections.Concurrent; +using System.Text.Json; + +namespace LMP.Core.Youtube.Bridge.Common; + +public sealed class DecryptorCache where TKey : notnull +{ + private readonly ConcurrentDictionary _memory = new(); + private readonly int _maxMemory; + private readonly int _maxDisk; + private readonly Lock _cleanupLock = new(); + private volatile bool _cleanupInProgress; + private volatile bool _isDirty; + private long _lastSaveTicks; + private string? _playerVersion; + + private const int SaveIntervalMs = 60_000; + + /// Путь к файлу кэша на диске. + public string DiskPath { get; } + + /// Папка, в которой лежит файл кэша. + public string CacheFolder => Path.GetDirectoryName(DiskPath)!; + + public DecryptorCache(string diskPath, int maxMemory = 2000, int maxDisk = 500) + { + DiskPath = diskPath; + _maxMemory = maxMemory; + _maxDisk = maxDisk; + } + + public bool TryGet(TKey key, out TValue value) + { + if (_memory.TryGetValue(key, out var cached)) + { + value = cached.Value; + return true; + } + + value = default!; + return false; + } + + public void Set(TKey key, TValue value) + { + var ticks = Environment.TickCount64; + _memory[key] = (value, ticks); + _isDirty = true; + + if (_memory.Count > _maxMemory * 0.8 && !_cleanupInProgress) + TriggerCleanup(); + + if (ticks - _lastSaveTicks > SaveIntervalMs) + _ = Task.Run(SaveAsync); + } + + public async Task LoadAsync(string playerVersion) + { + _playerVersion = playerVersion; + + try + { + if (!File.Exists(DiskPath)) return; + + var json = await File.ReadAllTextAsync(DiskPath); + var data = JsonSerializer.Deserialize(json); + + if (data is null || data.PlayerVersion != playerVersion) + { + File.Delete(DiskPath); + return; + } + + var ticks = Environment.TickCount64; + foreach (var kvp in data.Entries) + { + var key = JsonSerializer.Deserialize(kvp.Key); + var value = JsonSerializer.Deserialize(kvp.Value); + if (key is not null && value is not null) + _memory[key] = (value, ticks); + } + + Log.Debug($"[Cache] Loaded {_memory.Count} entries from {Path.GetFileName(DiskPath)}"); + } + catch (Exception ex) + { + Log.Debug($"[Cache] Load failed: {ex.Message}"); + } + } + + public async Task SaveAsync() + { + if (!_isDirty) return; + + _lastSaveTicks = Environment.TickCount64; + _isDirty = false; + + try + { + Directory.CreateDirectory(CacheFolder); + + var entries = _memory + .OrderByDescending(kvp => kvp.Value.Ticks) + .Take(_maxDisk) + .ToDictionary( + kvp => JsonSerializer.Serialize(kvp.Key), + kvp => JsonSerializer.Serialize(kvp.Value.Value)); + + var data = new CacheData + { + PlayerVersion = _playerVersion ?? "unknown", + Entries = entries + }; + + var json = JsonSerializer.Serialize(data); + await File.WriteAllTextAsync(DiskPath, json); + } + catch (Exception ex) + { + Log.Debug($"[Cache] Save failed: {ex.Message}"); + } + } + + public void Clear() + { + _memory.Clear(); + _isDirty = true; + } + + public int Count => _memory.Count; + + public IEnumerable Keys => _memory.Keys; + + private void TriggerCleanup() + { + if (!_cleanupLock.TryEnter()) return; + try + { + if (_memory.Count <= _maxMemory * 0.8) return; + _cleanupInProgress = true; + + var toRemove = _memory + .OrderBy(kvp => kvp.Value.Ticks) + .Take(_maxMemory / 2) + .Select(kvp => kvp.Key) + .ToArray(); + + foreach (var key in toRemove) + _memory.TryRemove(key, out _); + } + finally + { + _cleanupInProgress = false; + _cleanupLock.Exit(); + } + } + + private sealed class CacheData + { + public string PlayerVersion { get; set; } = ""; + public Dictionary Entries { get; set; } = []; + } +} \ No newline at end of file diff --git a/Core/Youtube/Bridge/Common/IYoutubeDecryptor.cs b/Core/Youtube/Bridge/Common/IYoutubeDecryptor.cs new file mode 100644 index 0000000..57c3a5c --- /dev/null +++ b/Core/Youtube/Bridge/Common/IYoutubeDecryptor.cs @@ -0,0 +1,13 @@ +namespace LMP.Core.Youtube.Bridge.Common; + +/// +/// Базовый интерфейс для всех дешифраторов YouTube. +/// +public interface IYoutubeDecryptor +{ + /// Инвалидирует весь кэш (при смене версии плеера). + void InvalidateCache(); + + /// Синхронно сбрасывает кэш на диск. + void FlushCache(); +} \ No newline at end of file diff --git a/Core/Youtube/Bridge/Common/JsDecryptorBase.cs b/Core/Youtube/Bridge/Common/JsDecryptorBase.cs new file mode 100644 index 0000000..bf6e5be --- /dev/null +++ b/Core/Youtube/Bridge/Common/JsDecryptorBase.cs @@ -0,0 +1,547 @@ +using System.Text; +using Jint; + +namespace LMP.Core.Youtube.Bridge.Common; + +public abstract class JsDecryptorBase : IYoutubeDecryptor, IDisposable +{ + protected readonly PlayerContextManager PlayerManager; + protected readonly DecryptorCache Cache; + + private readonly Lock _initLock = new(); + + protected Engine? BundleEngine; + protected string? BundleFuncName; + protected Engine? FullEngine; + protected string? FullFuncName; + + protected string? CurrentPlayerVersion; + protected volatile bool IsInitialized; + + /// Имя дешифратора для логов. + protected string DecryptorName => typeof(T).Name; + + /// Папка для диагностических файлов. + protected string DiagFolder => Cache.CacheFolder; + + protected JsDecryptorBase( + PlayerContextManager playerManager, + string cacheFilePath, + int maxMemory, + int maxDisk) + { + PlayerManager = playerManager; + Cache = new DecryptorCache(cacheFilePath, maxMemory, maxDisk); + } + + protected async ValueTask EnsureInitializedAsync(CancellationToken ct) + { + if (IsInitialized) return; + + lock (_initLock) + { + if (IsInitialized) return; + } + + var context = await PlayerManager.GetOrLoadAsync(ct); + + lock (_initLock) + { + if (IsInitialized) return; + + CurrentPlayerVersion = context.Version; + Cache.LoadAsync(context.Version).Wait(ct); + + try + { + InitializeCore(context); + IsInitialized = true; + } + catch (Exception ex) + { + Log.Error($"[{DecryptorName}] Initialization failed: {ex.Message}"); + } + } + } + + protected abstract void InitializeCore(PlayerContext context); + + // ═══════════════════════════════════════════════════════════════ + // JS ENGINE INITIALIZATION + // ═══════════════════════════════════════════════════════════════ + + /// + /// Универсальная инициализация JS движков. + /// Подклассы вызывают этот метод, предоставляя: + /// - funcName: имя entry-функции + /// - buildWrapperScript: генератор wrapper-скрипта + /// - testInput: тестовый вход для проверки + /// - buildBundle: опциональный кастомный builder бандла + /// + protected bool TryInitJsEngines( + PlayerContext context, + string funcName, + Func buildWrapperScript, + string testInput, + Func? buildBundle = null) + { + var wrapperScript = buildWrapperScript(funcName); + const string wrapperFuncName = "__decryptorTransform"; + + // 1. Bundle + var bundle = buildBundle is not null + ? buildBundle(context.BaseJs, funcName) + : BuildDefaultBundle(context.BaseJs, funcName); + + if (bundle is not null) + { + SaveDiagScript("bundle", bundle, funcName); + if (TryInitBundle(bundle, wrapperScript, wrapperFuncName, testInput)) + { + Log.Info($"[{DecryptorName}] Bundle ready ({bundle.Length / 1024}KB)"); + return true; + } + } + + Log.Debug($"[{DecryptorName}] Bundle failed, trying full JS..."); + + // 2. Full JS with window export injection + var modifiedJs = InjectWindowExport(context.BaseJs, funcName); + if (TryInitFull(modifiedJs, wrapperScript, wrapperFuncName, testInput)) + { + Log.Info($"[{DecryptorName}] Full JS ready ({context.BaseJs.Length / 1024}KB)"); + return true; + } + + return false; + } + + /// + /// Строит бандл по умолчанию: ExtractBundle + словарь строк + dict resolution. + /// + protected virtual string? BuildDefaultBundle(string baseJs, string funcName) + { + var extracted = JsFunctionExtractor.ExtractBundle(baseJs, funcName); + if (extracted is null) return null; + + // ═══ Step 1: Resolve dictionary references (q[N] → actual values) ═══ + var dictName = JsDictResolver.DetectDictName(extracted); + if (dictName is not null) + { + var dictElements = JsFunctionExtractor.ExtractArrayElements(baseJs, dictName); + if (dictElements is not null && dictElements.Length >= 10) + { + var resolved = JsDictResolver.Resolve(extracted, dictName, dictElements); + Log.Debug($"[{DecryptorName}] Dict '{dictName}' resolved in bundle: " + + $"{extracted.Length} → {resolved.Length} chars"); + extracted = resolved; + } + } + + // ═══ Step 2: Check if dictionary .split() definition is included ═══ + if (BundleContainsDictionary(extracted)) + return extracted; + + // Fallback: find and prepend dictionary + var dictCode = FindStringDictionary(baseJs); + if (dictCode is not null) + { + Log.Debug($"[{DecryptorName}] Prepending dictionary ({dictCode.Length} chars)"); + return dictCode + "\n" + extracted; + } + + Log.Warn($"[{DecryptorName}] Dictionary not found, bundle may fail"); + return extracted; + } + + private bool TryInitBundle( + string bundle, string wrapperScript, string wrapperFuncName, string testInput) + { + try + { + BundleEngine = CreateEngine(TimeSpan.FromSeconds(15), 2_000_000); + BundleEngine.Execute(BrowserStubs); + BundleEngine.Execute(bundle); + BundleEngine.Execute(wrapperScript); + + var result = BundleEngine.Invoke(wrapperFuncName, testInput).AsString(); + if (string.IsNullOrEmpty(result) || result == testInput) + { + BundleEngine.Dispose(); + BundleEngine = null; + return false; + } + + BundleFuncName = wrapperFuncName; + Cache.Set(testInput, result); + return true; + } + catch (Exception ex) + { + Log.Debug($"[{DecryptorName}] Bundle init failed: {ex.Message}"); + SaveDiagError("bundle", ex.ToString()); + BundleEngine?.Dispose(); + BundleEngine = null; + return false; + } + } + + private bool TryInitFull( + string baseJs, string wrapperScript, string wrapperFuncName, string testInput) + { + try + { + FullEngine = CreateEngine(TimeSpan.FromSeconds(30), 5_000_000); + FullEngine.Execute(BrowserStubs); + FullEngine.Execute(baseJs); + FullEngine.Execute(wrapperScript); + + var result = FullEngine.Invoke(wrapperFuncName, testInput).AsString(); + if (string.IsNullOrEmpty(result) || result == testInput) + { + FullEngine.Dispose(); + FullEngine = null; + return false; + } + + FullFuncName = wrapperFuncName; + Cache.Set(testInput, result); + return true; + } + catch (Exception ex) + { + Log.Debug($"[{DecryptorName}] Full JS init failed: {ex.Message}"); + SaveDiagError("full", ex.ToString()); + FullEngine?.Dispose(); + FullEngine = null; + return false; + } + } + + /// + /// Вызывает JS-движок для расшифровки. + /// Сначала bundle, потом full — с кэшированием результата. + /// + protected string? TryInvokeJs(string input, string logPrefix) + { + if (BundleEngine is not null && BundleFuncName is not null) + { + try + { + var result = BundleEngine.Invoke(BundleFuncName, input).AsString(); + if (!string.IsNullOrEmpty(result) && result != input) + { + Cache.Set(input, result); + Log.Debug($"[{DecryptorName}] {logPrefix} Bundle: {Truncate(input)} -> {Truncate(result)}"); + return result; + } + } + catch (Exception ex) + { + Log.Warn($"[{DecryptorName}] {logPrefix} Bundle failed: {ex.Message}"); + } + } + + if (FullEngine is not null && FullFuncName is not null) + { + try + { + var result = FullEngine.Invoke(FullFuncName, input).AsString(); + if (!string.IsNullOrEmpty(result) && result != input) + { + Cache.Set(input, result); + Log.Debug($"[{DecryptorName}] {logPrefix} Full: {Truncate(input)} -> {Truncate(result)}"); + return result; + } + } + catch (Exception ex) + { + Log.Error($"[{DecryptorName}] {logPrefix} Full JS failed: {ex.Message}"); + } + } + + return null; + } + + // ═══════════════════════════════════════════════════════════════ + // WINDOW EXPORT INJECTION + // ═══════════════════════════════════════════════════════════════ + + /// + /// Инжектирует window['funcName']=funcName; после определения функции в base.js. + /// Необходимо потому что функции определены внутри IIFE и недоступны глобально. + /// + protected static string InjectWindowExport(string baseJs, string funcName) + { + try + { + // Strategy 1: через JsFunctionExtractor + var funcInfo = JsFunctionExtractor.FindFunctionByName(baseJs, funcName); + if (funcInfo is not null) + { + int endOfDef = funcInfo.Value.Position + funcName.Length + 1 + funcInfo.Value.Code.Length; + while (endOfDef < baseJs.Length && baseJs[endOfDef] is ';' or ',' or ' ' or '\t') + endOfDef++; + + var export = $"\nwindow['{funcName}']={funcName};\n"; + Log.Debug($"[JsDecryptor] Injecting window export for '{funcName}' at position {endOfDef}"); + return baseJs.Insert(endOfDef, export); + } + + // Strategy 2: простой string search + var pattern = $"{funcName}=function("; + int patternIdx = baseJs.IndexOf(pattern, StringComparison.Ordinal); + if (patternIdx >= 0) + { + int braceStart = baseJs.IndexOf('{', patternIdx + pattern.Length); + if (braceStart >= 0) + { + int braceEnd = JsFunctionExtractor.FindMatchingBrace(baseJs, braceStart); + if (braceEnd > 0) + { + int insertPos = braceEnd + 1; + if (insertPos < baseJs.Length && baseJs[insertPos] == ';') insertPos++; + + var export = $"\nwindow['{funcName}']={funcName};\n"; + return baseJs.Insert(insertPos, export); + } + } + } + + Log.Warn($"[JsDecryptor] Could not find injection point for '{funcName}'"); + } + catch (Exception ex) + { + Log.Warn($"[JsDecryptor] Window export injection failed: {ex.Message}"); + } + + return baseJs; + } + + // ═══════════════════════════════════════════════════════════════ + // STRING DICTIONARY + // ═══════════════════════════════════════════════════════════════ + + /// + /// Находит определение глобального словаря строк (var q = '...'.split("}")). + /// JS-aware parsing: обрабатывает escaped кавычки, любые разделители, + /// и корректно отрезает trailing var declarations. + /// + protected static string? FindStringDictionary(string baseJs) + { + var span = baseJs.AsSpan(); + int pos = 0; + + while (pos < span.Length - 20) + { + int varIdx = span[pos..].IndexOf("var ", StringComparison.Ordinal); + if (varIdx < 0) break; + varIdx += pos; + + if (varIdx > 0 && span[varIdx - 1] is not (';' or '{' or '}' or '\n' or '\r' or ' ' or '\t')) + { + pos = varIdx + 4; + continue; + } + + pos = varIdx + 4; + + int nameStart = pos; + while (nameStart < span.Length && span[nameStart] is ' ' or '\t') nameStart++; + + int nameEnd = nameStart; + while (nameEnd < span.Length && (char.IsLetterOrDigit(span[nameEnd]) || span[nameEnd] is '_' or '$')) + nameEnd++; + + int nameLen = nameEnd - nameStart; + if (nameLen < 1 || nameLen > 3) continue; + + var varName = span[nameStart..nameEnd].ToString(); + + int eqPos = nameEnd; + while (eqPos < span.Length && span[eqPos] is ' ' or '\t') eqPos++; + if (eqPos >= span.Length || span[eqPos] != '=') continue; + eqPos++; + if (eqPos < span.Length && span[eqPos] == '=') continue; + + int quotePos = eqPos; + while (quotePos < span.Length && span[quotePos] is ' ' or '\t') quotePos++; + if (quotePos >= span.Length || span[quotePos] is not ('\'' or '"')) continue; + + int stringStart = quotePos; + int stringEnd = JsFunctionExtractor.SkipString(baseJs, stringStart); + if (stringEnd <= stringStart + 2) continue; + + if (stringEnd - stringStart - 2 < 500) continue; + + int afterStr = stringEnd; + while (afterStr < span.Length && span[afterStr] is ' ' or '\t') afterStr++; + if (afterStr + 7 > span.Length) continue; + if (!span.Slice(afterStr, 7).SequenceEqual(".split(")) continue; + + int splitParenStart = afterStr + 6; + int splitParenEnd = JsFunctionExtractor.FindMatchingParen(baseJs, splitParenStart); + if (splitParenEnd < 0) continue; + + // Извлекаем разделитель и считаем элементы + int sepStart = splitParenStart + 1; + while (sepStart < span.Length && span[sepStart] is ' ' or '\t') sepStart++; + if (sepStart >= span.Length || span[sepStart] is not ('\'' or '"')) continue; + + char sepQuote = span[sepStart]; + int sepContentStart = sepStart + 1; + int sepContentEnd = -1; + for (int si = sepContentStart; si < span.Length; si++) + { + if (span[si] == '\\' && si + 1 < span.Length) { si++; continue; } + if (span[si] == sepQuote) { sepContentEnd = si; break; } + } + if (sepContentEnd < 0 || sepContentEnd == sepContentStart || + sepContentEnd - sepContentStart > 10) continue; + + var separator = span[sepContentStart..sepContentEnd]; + var stringContent = span[(stringStart + 1)..(stringEnd - 1)]; + + int separatorCount = 0; + int sPos = 0; + while (sPos <= stringContent.Length - separator.Length) + { + int found = stringContent[sPos..].IndexOf(separator, StringComparison.Ordinal); + if (found < 0) break; + separatorCount++; + sPos += found + separator.Length; + } + if (separatorCount + 1 < 50) continue; + + int dictEnd = splitParenEnd + 1; + var dictDef = $"var {varName}={baseJs[stringStart..dictEnd]};"; + + Log.Debug($"[JsDecryptor] Found dictionary '{varName}', {separatorCount + 1} elements"); + return dictDef; + } + + return null; + } + + // ═══════════════════════════════════════════════════════════════ + // HELPERS + // ═══════════════════════════════════════════════════════════════ + + private static bool BundleContainsDictionary(string bundle) + { + int firstTry = bundle.IndexOf("try{", StringComparison.Ordinal); + var searchArea = firstTry > 0 + ? bundle.AsSpan(0, firstTry) + : bundle.AsSpan(0, Math.Min(bundle.Length, 5000)); + return searchArea.Contains(".split(", StringComparison.Ordinal); + } + + private static Engine CreateEngine(TimeSpan timeout, int maxStatements) => + new(opt => opt + .TimeoutInterval(timeout) + .LimitRecursion(200) + .MaxStatements(maxStatements)); + + protected void SaveDiagScript(string type, string code, string funcName) + { + try + { + Directory.CreateDirectory(DiagFolder); + + var sb = new StringBuilder(); + sb.AppendLine("// ═══════════════════════════════════════════════════════════"); + sb.AppendLine($"// {DecryptorName.ToUpper()} {type.ToUpper()} — AUTO-GENERATED"); + sb.AppendLine($"// Player version: {CurrentPlayerVersion}"); + sb.AppendLine($"// Entry function: {funcName}"); + sb.AppendLine($"// Generated: {DateTime.UtcNow:O}"); + sb.AppendLine("// ═══════════════════════════════════════════════════════════\n"); + sb.AppendLine(code); + + var path = Path.Combine(DiagFolder, $"player_{CurrentPlayerVersion}_{type}.js"); + File.WriteAllText(path, sb.ToString()); + } + catch { /* ignore */ } + } + + protected void SaveDiagError(string type, string error) + { + if (CurrentPlayerVersion is null) return; + try + { + Directory.CreateDirectory(DiagFolder); + var path = Path.Combine(DiagFolder, $"player_{CurrentPlayerVersion}_{type}_error.txt"); + File.WriteAllText(path, $""" + === {DecryptorName.ToUpper()} {type.ToUpper()} ERROR === + Player version: {CurrentPlayerVersion} + Timestamp: {DateTime.UtcNow:O} + + {error} + """); + } + catch { /* ignore */ } + } + + protected static string Truncate(string s, int len = 20) => + s.Length <= len ? s : string.Concat(s.AsSpan(0, len), "..."); + + public void FlushCache() => Cache.SaveAsync().Wait(); + + public void InvalidateCache() + { + Cache.Clear(); + BundleEngine?.Dispose(); + BundleEngine = null; + FullEngine?.Dispose(); + FullEngine = null; + IsInitialized = false; + Log.Info($"[{DecryptorName}] Cache invalidated"); + } + + public virtual void Dispose() + { + FlushCache(); + BundleEngine?.Dispose(); + FullEngine?.Dispose(); + GC.SuppressFinalize(this); + } + + protected const string BrowserStubs = """ + var _sink = new Proxy(function(){return _sink;}, { + get: function(t,p) { return p === 'then' ? void 0 : _sink; }, + set: function() { return true; }, + apply: function() { return _sink; } + }); + var window = this; window.self = window.top = window.globalThis = window; + var location = { href: 'https://www.youtube.com/', hostname: 'www.youtube.com', protocol: 'https:' }; + window.location = location; + var document = { + createElement: function() { return _sink; }, + getElementById: function() { return null; }, + querySelector: function() { return null; }, + querySelectorAll: function() { return []; }, + readyState: 'complete' + }; + window.document = document; + var navigator = { userAgent: '', platform: '' }; window.navigator = navigator; + window.setTimeout = window.setInterval = function(f) { try { if (typeof f === 'function') f(); } catch(e) {} return 0; }; + window.clearTimeout = window.clearInterval = function() {}; + var XMLHttpRequest = function() { + this.open = this.send = this.setRequestHeader = function() {}; + this.readyState = 4; this.status = 200; this.responseText = ''; + }; + var fetch = function() { return Promise.resolve({ ok: true, text: function() { return Promise.resolve(''); } }); }; + var ytcfg = { get: function() { return ''; }, set: function() {}, d: function() { return ''; } }; + var yt = { config_: {} }; + var g = new Proxy({}, { + get: function(t, p) { + if (p === 'then') return void 0; + if (p in t) return t[p]; + return function() { return undefined; }; + }, + set: function(t, p, v) { t[p] = v; return true; }, + has: function(t, p) { return p in t; } + }); + var kCO = window; + var rHS = window; + """; +} \ No newline at end of file diff --git a/Core/Youtube/Bridge/Common/JsDictResolver.cs b/Core/Youtube/Bridge/Common/JsDictResolver.cs new file mode 100644 index 0000000..bf1a9e7 --- /dev/null +++ b/Core/Youtube/Bridge/Common/JsDictResolver.cs @@ -0,0 +1,248 @@ +// Core/Youtube/Bridge/Common/JsDictResolver.cs +using System.Text; + +namespace LMP.Core.Youtube.Bridge.Common; + +/// +/// Resolves dictionary-indexed property accesses in JavaScript code. +/// Replaces patterns like obj[q[N]] with obj.resolvedName or obj["resolvedName"], +/// and q[N] in other contexts with the literal string value. +/// +internal static class JsDictResolver +{ + /// + /// Resolves all dictName[N] references in code using the provided dictionary elements. + /// + /// Transformations: + /// identifier[dictName[N]] → identifier.value (if value is valid JS identifier) + /// identifier[dictName[N]] → identifier["value"] (if value contains special chars) + /// dictName[N] → "value" (standalone references) + /// + public static string Resolve(string code, string dictName, string[] elements) + { + if (elements.Length == 0 || string.IsNullOrEmpty(code)) + return code; + + var span = code.AsSpan(); + var sb = new StringBuilder(code.Length); + int pos = 0; + + var dictPrefix = string.Concat(dictName, "["); + var dictPrefixSpan = dictPrefix.AsSpan(); + + while (pos < span.Length) + { + int idx = span[pos..].IndexOf(dictPrefixSpan, StringComparison.Ordinal); + if (idx < 0) + { + sb.Append(span[pos..]); + break; + } + + idx += pos; + + // Word boundary: dictName must not be part of a larger identifier + if (idx > 0 && IsIdentChar(span[idx - 1])) + { + sb.Append(span[pos..(idx + 1)]); + pos = idx + 1; + continue; + } + + // Read the index number after dictName[ + int numStart = idx + dictPrefixSpan.Length; + int numEnd = numStart; + while (numEnd < span.Length && char.IsAsciiDigit(span[numEnd])) + numEnd++; + + // Must have digits followed by ] + if (numEnd == numStart || numEnd >= span.Length || span[numEnd] != ']') + { + sb.Append(span[pos..(idx + dictPrefixSpan.Length)]); + pos = idx + dictPrefixSpan.Length; + continue; + } + + if (!int.TryParse(span[numStart..numEnd], out int dictIdx) || + dictIdx < 0 || dictIdx >= elements.Length) + { + sb.Append(span[pos..(numEnd + 1)]); + pos = numEnd + 1; + continue; + } + + var resolvedValue = elements[dictIdx]; + int afterCloseBracket = numEnd + 1; // position after ] + + // Check context: is dictName[N] inside a property access bracket? + // Pattern: something[dictName[N]] → something.value or something["value"] + int lookBack = idx - 1; + while (lookBack >= pos && span[lookBack] is ' ' or '\t') lookBack--; + + if (lookBack >= pos && span[lookBack] == '[') + { + // Found [dictName[N]] — check that there's an identifier before the outer [ + int beforeBracket = lookBack - 1; + while (beforeBracket >= pos && span[beforeBracket] is ' ' or '\t') beforeBracket--; + + if (beforeBracket >= 0 && + (IsIdentChar(span[beforeBracket]) || span[beforeBracket] is ')' or ']')) + { + // Check for closing ] after dictName[N]] + int afterOuter = afterCloseBracket; + while (afterOuter < span.Length && span[afterOuter] is ' ' or '\t') + afterOuter++; + + if (afterOuter < span.Length && span[afterOuter] == ']') + { + // Full pattern confirmed: obj[dictName[N]] + // Replace: remove outer [ before, dictName[N], outer ] after + // Append everything before the outer [ + sb.Append(span[pos..lookBack]); + + if (IsValidJsIdentifier(resolvedValue)) + { + sb.Append('.'); + sb.Append(resolvedValue); + } + else + { + sb.Append("[\""); + AppendEscaped(sb, resolvedValue); + sb.Append("\"]"); + } + + pos = afterOuter + 1; // skip past outer ] + continue; + } + } + } + + // Not a property access — standalone dictName[N] → "value" + sb.Append(span[pos..idx]); + sb.Append('"'); + AppendEscaped(sb, resolvedValue); + sb.Append('"'); + pos = afterCloseBracket; + } + + return sb.ToString(); + } + + /// + /// Detects the dictionary name used in a code fragment. + /// Looks for patterns like: identifier[shortName[digits]] + /// where shortName is 1-3 chars and appears frequently. + /// + public static string? DetectDictName(string code) + { + var counts = new Dictionary(4); + var span = code.AsSpan(); + int pos = 0; + + while (pos < span.Length) + { + int bracketIdx = span[pos..].IndexOf('['); + if (bracketIdx < 0) break; + bracketIdx += pos; + pos = bracketIdx + 1; + + // Read identifier after [ + int identStart = pos; + while (identStart < span.Length && span[identStart] is ' ' or '\t') identStart++; + + int identEnd = identStart; + while (identEnd < span.Length && + (char.IsLetterOrDigit(span[identEnd]) || span[identEnd] is '_' or '$')) + identEnd++; + + int identLen = identEnd - identStart; + if (identLen is < 1 or > 3) continue; + + // Must be followed by [digits] + int afterIdent = identEnd; + while (afterIdent < span.Length && span[afterIdent] is ' ' or '\t') afterIdent++; + if (afterIdent >= span.Length || span[afterIdent] != '[') continue; + + int numCheckStart = afterIdent + 1; + while (numCheckStart < span.Length && span[numCheckStart] is ' ' or '\t') numCheckStart++; + if (numCheckStart >= span.Length || !char.IsAsciiDigit(span[numCheckStart])) continue; + + var name = span.Slice(identStart, identLen).ToString(); + + if (counts.TryGetValue(name, out int count)) + counts[name] = count + 1; + else + counts[name] = 1; + } + + string? best = null; + int bestCount = 2; // minimum 3 occurrences + foreach (var kv in counts) + { + if (kv.Value > bestCount) + { + bestCount = kv.Value; + best = kv.Key; + } + } + + return best; + } + + /// + /// Full pipeline: detect dict name → find dict definition → resolve all references. + /// Returns resolved code, or original if no dict found. + /// + public static string ResolveFromFullJs(string code, string fullJs) + { + var dictName = DetectDictName(code); + if (dictName is null) return code; + + var elements = JsFunctionExtractor.ExtractArrayElements(fullJs, dictName); + if (elements is null || elements.Length < 10) return code; + + Log.Debug($"[JsDictResolver] Resolving '{dictName}' ({elements.Length} elements) in {code.Length} chars"); + + var resolved = Resolve(code, dictName, elements); + + Log.Debug($"[JsDictResolver] Resolved: {code.Length} → {resolved.Length} chars"); + return resolved; + } + + // ═══════════════════════════════════════════════════════════════ + // HELPERS + // ═══════════════════════════════════════════════════════════════ + + private static bool IsIdentChar(char c) => + char.IsLetterOrDigit(c) || c is '_' or '$'; + + private static bool IsValidJsIdentifier(string value) + { + if (string.IsNullOrEmpty(value)) return false; + if (!char.IsLetter(value[0]) && value[0] is not '_' and not '$') return false; + + for (int i = 1; i < value.Length; i++) + { + if (!char.IsLetterOrDigit(value[i]) && value[i] is not '_' and not '$') + return false; + } + + return true; + } + + private static void AppendEscaped(StringBuilder sb, string value) + { + foreach (char c in value) + { + switch (c) + { + case '"': sb.Append("\\\""); break; + case '\\': sb.Append("\\\\"); break; + case '\n': sb.Append("\\n"); break; + case '\r': sb.Append("\\r"); break; + default: sb.Append(c); break; + } + } + } +} \ No newline at end of file diff --git a/Core/Youtube/Bridge/Common/JsFunctionExtractor.cs b/Core/Youtube/Bridge/Common/JsFunctionExtractor.cs new file mode 100644 index 0000000..43eed59 --- /dev/null +++ b/Core/Youtube/Bridge/Common/JsFunctionExtractor.cs @@ -0,0 +1,1332 @@ +using System.Buffers; +using System.Collections.Frozen; +using System.Runtime.CompilerServices; +using System.Runtime.InteropServices; +using System.Text; +using System.Text.RegularExpressions; + +namespace LMP.Core.Youtube.Bridge.Common; + +internal static partial class JsFunctionExtractor +{ + // ═══════════════════════════════════════════════════════════════ + // SEARCH VALUES — cached character sets for hot-path scanning + // ═══════════════════════════════════════════════════════════════ + + private static readonly SearchValues s_quoteChars = + SearchValues.Create("\"'`"); + + private static readonly SearchValues s_identStartChars = + SearchValues.Create("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_$"); + + private static readonly FrozenSet SkipNames = FrozenSet.ToFrozenSet( + [ + "var", "let", "const", "function", "return", "if", "else", "for", "while", + "do", "switch", "case", "break", "continue", "try", "catch", "finally", + "throw", "new", "delete", "typeof", "void", "in", "instanceof", "this", + "true", "false", "null", "undefined", "of", "class", "extends", "yield", + "async", "await", "with", "default", "import", "export", + "String", "Array", "Object", "Math", "Date", "Number", "Boolean", + "RegExp", "Error", "JSON", "console", "parseInt", "parseFloat", + "isNaN", "isFinite", "Infinity", "NaN", "arguments", + "Proxy", "Symbol", "Promise", "Uint8Array", "Int32Array", + "Float32Array", "Float64Array", "Map", "Set", "WeakMap", "WeakSet", + "decodeURIComponent", "encodeURIComponent", "decodeURI", "encodeURI", + "window", "document", "navigator", "location", "history", + "setTimeout", "setInterval", "clearTimeout", "clearInterval", + "fetch", "XMLHttpRequest", "Image", "Blob", "URL", "Event", + "g", "ytcfg", "yt", + "name", "url", "path", "type", "value", "data", "key", "id", + "length", "index", "count", "size", "width", "height", + "top", "left", "right", "bottom", "start", "end", + "text", "html", "body", "head", "style", "src", "href", + "error", "result", "response", "request", "message", "status", "code", + "prototype", "constructor", "toString", "valueOf", "hasOwnProperty", + "call", "apply", "bind", "push", "pop", "shift", "unshift", + "splice", "slice", "join", "split", "replace", "match", "search", + "test", "indexOf", "lastIndexOf", "forEach", "map", "filter", + "reduce", "concat", "sort", "reverse", "includes", "find", + "findIndex", "every", "some", "keys", "values", "entries", + "assign", "create", "defineProperty", "freeze", + "parse", "stringify", "charCodeAt", "charAt", "fromCharCode", + "setPrototypeOf", "getPrototypeOf" + ]); + + [ThreadStatic] + private static StringBuilder? t_concatBuilder; + + // ═══════════════════════════════════════════════════════════════ + // PUBLIC API + // ═══════════════════════════════════════════════════════════════ + + public static string? ExtractBundle(string fullJs, string entryFuncName) + { + try + { + var sw = System.Diagnostics.Stopwatch.StartNew(); + + var entryDef = FindAnyDefinition(fullJs, entryFuncName); + if (entryDef is null) + { + Log.Debug($"[JsExtractor] Entry function '{entryFuncName}' not found"); + return null; + } + + var dictName = DetectDictArrayName(entryDef); + + // ═══ Thin wrapper fallback ═══ + // If entry is a thin wrapper (e.g. Sxt → Ox.call), dict appears in the + // referenced function, not in the wrapper itself. + if (dictName is null && entryDef.Length < 300) + { + foreach (var depName in FindReferencedNames(entryDef)) + { + if (SkipNames.Contains(depName)) continue; + var depDef = FindAnyDefinition(fullJs, depName); + if (depDef is null || depDef.Length < 200) continue; + dictName = DetectDictArrayName(depDef); + if (dictName is not null) + { + Log.Debug($"[JsExtractor] Dict array '{dictName}' found via dependency '{depName}'"); + break; + } + } + } + + string? dictArrayCode = null; + + if (dictName is not null) + { + dictArrayCode = FindDictArrayDefinition(fullJs, dictName); + if (dictArrayCode is not null) + Log.Debug($"[JsExtractor] Dict array '{dictName}': {dictArrayCode.Length} chars"); + else + Log.Warn($"[JsExtractor] Dict array '{dictName}' not found"); + } + + var definitions = new Dictionary(64); + var visited = new HashSet(SkipNames); + var notFound = new HashSet(); + + if (dictName is not null) visited.Add(dictName); + + var queue = new Queue(); + queue.Enqueue(entryFuncName); + + int iterations = 0; + const int maxIterations = 200; + + var defBuilder = new StringBuilder(512); + + while (queue.Count > 0 && iterations++ < maxIterations) + { + var currentName = queue.Dequeue(); + if (!visited.Add(currentName)) continue; + + var def = FindAnyDefinition(fullJs, currentName); + + if (def is null) + { + notFound.Add(currentName); + continue; + } + + var cleanSpan = def.AsSpan().TrimEnd([';', ',', ' ', '\n', '\r']); + + defBuilder.Clear(); + defBuilder.Append("var "); + defBuilder.Append(currentName); + defBuilder.Append('='); + defBuilder.Append(cleanSpan); + defBuilder.Append(';'); + definitions[currentName] = defBuilder.ToString(); + + foreach (var dep in FindReferencedNames(def)) + { + if (!visited.Contains(dep)) + queue.Enqueue(dep); + } + } + + if (definitions.Count < 3) + { + Log.Warn($"[JsExtractor] Too few definitions ({definitions.Count})"); + } + + var guardVars = FindTypeofGuardVars(entryDef, definitions, dictName); + foreach (var def in definitions.Values) + { + foreach (var guardVar in FindTypeofGuardVars(def, definitions, dictName)) + guardVars.Add(guardVar); + } + + // ═══ Add short notFound names as guard vars for safety ═══ + foreach (var name in notFound) + { + if (name.Length <= 4 && !guardVars.Contains(name)) + guardVars.Add(name); + } + + if (guardVars.Count > 0) + Log.Debug($"[JsExtractor] Guard vars: {string.Join(", ", guardVars)}"); + + var totalSize = (dictArrayCode?.Length ?? 0) + + definitions.Values.Sum(static d => d.Length) + + guardVars.Count * 16 + + 1024; + + var sb = new StringBuilder(totalSize); + + if (dictArrayCode is not null) sb.AppendLine(dictArrayCode); + + foreach (var guardVar in guardVars) + sb.Append("var ").Append(guardVar).AppendLine("=0;"); + + foreach (var kv in definitions) + { + if (string.Equals(kv.Key, entryFuncName, StringComparison.Ordinal)) + continue; + sb.Append("try{").Append(kv.Value).AppendLine("}catch(e){}"); + } + + if (definitions.TryGetValue(entryFuncName, out var entryCode)) + sb.AppendLine(entryCode); + + sb.Append("window['").Append(entryFuncName).Append("']=").Append(entryFuncName).AppendLine(";"); + + sw.Stop(); + var result = sb.ToString(); + var defCount = definitions.Count + (dictArrayCode is not null ? 1 : 0); + var reduction = fullJs.Length > 0 ? 100 - result.Length * 100 / fullJs.Length : 0; + + Log.Info($"[JsExtractor] Extracted {defCount} definitions, " + + $"{fullJs.Length / 1024}KB -> {result.Length / 1024}KB " + + $"({reduction}% reduction) in {sw.ElapsedMilliseconds}ms"); + + if (notFound.Count > 0) + Log.Debug($"[JsExtractor] Not found ({notFound.Count}): {string.Join(", ", notFound.Take(20))}"); + + return result; + } + catch (Exception ex) + { + Log.Debug($"[JsExtractor] Extraction failed: {ex.Message}"); + return null; + } + } + + public static string[]? ExtractArrayElements(string fullJs, string name) + { + var def = FindDictArrayDefinition(fullJs, name); + if (def is null) return null; + + var defSpan = def.AsSpan(); + + // Try split pattern: "content".split("separator") + if (TryParseSplitExpression(defSpan, out var content, out var separator)) + return SplitToArray(content, separator); + + // Try bracket array: [elem1, elem2, ...] + var bracketStart = defSpan.IndexOf('['); + if (bracketStart >= 0) + { + var bracketEnd = defSpan.LastIndexOf(']'); + if (bracketEnd > bracketStart) + { + var inner = defSpan.Slice(bracketStart + 1, bracketEnd - bracketStart - 1); + return SplitBracketElements(inner); + } + } + + return null; + } + + public static string? DetectDictArrayName(string funcCode) + { + var paramNames = ExtractParamNames(funcCode); + var countDict = new Dictionary(8); + + var span = funcCode.AsSpan(); + int i = 0; + while (i < span.Length) + { + int bracketPos = span[i..].IndexOf('['); + if (bracketPos < 0) break; + bracketPos += i; + + // After '[' must be digits followed by ']' + int afterBracket = bracketPos + 1; + if (afterBracket < span.Length && char.IsAsciiDigit(span[afterBracket])) + { + int digitEnd = afterBracket; + while (digitEnd < span.Length && char.IsAsciiDigit(span[digitEnd])) digitEnd++; + + if (digitEnd < span.Length && span[digitEnd] == ']') + { + // Extract identifier before '[' + int nameEnd = bracketPos; + int nameStart = nameEnd - 1; + while (nameStart >= 0 && IsIdentChar(span[nameStart])) nameStart--; + nameStart++; + + int nameLen = nameEnd - nameStart; + if (nameLen is >= 1 and <= 3 && + (nameStart == 0 || !IsIdentChar(span[nameStart - 1]))) + { + var arrName = span.Slice(nameStart, nameLen).ToString(); + if (!paramNames.Contains(arrName) && !SkipNames.Contains(arrName)) + { + ref var count = ref CollectionsMarshal.GetValueRefOrAddDefault( + countDict, arrName, out _); + count++; + } + } + } + } + + i = bracketPos + 1; + } + + string? best = null; + int bestCount = 1; // minimum 2 required + foreach (var kv in countDict) + { + if (kv.Value > bestCount) + { + bestCount = kv.Value; + best = kv.Key; + } + } + + return best; + } + + public static HashSet ExtractParamNames(string funcCode) + { + var result = new HashSet(4); + var span = funcCode.AsSpan(); + + // Try: function(param1, param2) + if (span.StartsWith("function")) + { + int parenStart = span.IndexOf('('); + if (parenStart >= 0) + { + int parenEnd = FindMatchingParen(funcCode, parenStart); + if (parenEnd > parenStart) + { + ParseCommaSeparatedIdents( + span.Slice(parenStart + 1, parenEnd - parenStart - 1), result); + return result; + } + } + } + + // Try: (params) => ... or async (params) => ... + int openParen = -1; + if (span.Length > 0 && span[0] == '(') + openParen = 0; + else if (span.StartsWith("async ") || span.StartsWith("async\t")) + openParen = span.IndexOf('('); + + if (openParen >= 0) + { + int closeParen = FindMatchingParen(funcCode, openParen); + if (closeParen > openParen) + { + ParseCommaSeparatedIdents( + span.Slice(openParen + 1, closeParen - openParen - 1), result); + return result; + } + } + + // Try: singleParam => ... + int arrowIdx = span.IndexOf("=>"); + if (arrowIdx > 0) + { + var paramPart = span[..arrowIdx].Trim(); + if (paramPart.Length > 0 && s_identStartChars.Contains(paramPart[0])) + result.Add(paramPart.ToString()); + } + + return result; + } + + public static string? FindDictArrayDefinition(string fullJs, string name) => + FindBracketArrayDefinition(fullJs, name) ?? FindSplitArrayDefinition(fullJs, name); + + public static string? FindAnyDefinition(string fullJs, string name) => + FindFunctionDefinition(fullJs, name) + ?? FindArrowFunctionDefinition(fullJs, name) + ?? FindValueDefinition(fullJs, name) + ?? FindObjectDefinition(fullJs, name); + + public static string? FindFunctionDefinition(string fullJs, string name) + { + var fullSpan = fullJs.AsSpan(); + // target: "name=function(" + var target = string.Concat(name, "=function("); + var targetSpan = target.AsSpan(); + + int searchFrom = 0; + while (searchFrom < fullSpan.Length) + { + int idx = fullSpan[searchFrom..].IndexOf(targetSpan, StringComparison.Ordinal); + if (idx < 0) return null; + idx += searchFrom; + searchFrom = idx + targetSpan.Length; + + if (idx > 0 && IsIdentChar(fullSpan[idx - 1])) continue; + + int funcStart = idx + name.Length + 1; + int braceOffset = fullSpan[funcStart..].IndexOf('{'); + if (braceOffset < 0 || braceOffset > 300) continue; + + int braceStart = funcStart + braceOffset; + int braceEnd = FindMatchingBrace(fullJs, braceStart); + if (braceEnd < 0) continue; + + int end = braceEnd + 1; + if (end < fullSpan.Length && fullSpan[end] == ';') end++; + + return fullJs[funcStart..end]; + } + return null; + } + + public static string? FindArrowFunctionDefinition(string fullJs, string name) + { + var fullSpan = fullJs.AsSpan(); + var target = string.Concat(name, "="); + var targetSpan = target.AsSpan(); + + int searchFrom = 0; + while (searchFrom < fullSpan.Length) + { + int idx = fullSpan[searchFrom..].IndexOf(targetSpan, StringComparison.Ordinal); + if (idx < 0) return null; + idx += searchFrom; + searchFrom = idx + targetSpan.Length; + + if (idx > 0 && IsIdentChar(fullSpan[idx - 1])) continue; + + int afterEq = idx + name.Length + 1; + if (afterEq < fullSpan.Length && fullSpan[afterEq] == '=') continue; + + int valueStart = SkipHorizontalWhitespace(fullSpan, afterEq); + if (valueStart >= fullSpan.Length) continue; + + int arrowSearchEnd; + + if (fullSpan[valueStart] == '(') + { + int parenEnd = FindMatchingParen(fullJs, valueStart); + if (parenEnd < 0) continue; + + int afterParen = SkipHorizontalWhitespace(fullSpan, parenEnd + 1); + if (afterParen + 1 >= fullSpan.Length || + fullSpan[afterParen] != '=' || fullSpan[afterParen + 1] != '>') + continue; + + arrowSearchEnd = afterParen + 2; + } + else if (char.IsLetterOrDigit(fullSpan[valueStart]) || fullSpan[valueStart] is '_' or '$') + { + int paramEnd = valueStart; + while (paramEnd < fullSpan.Length && + (char.IsLetterOrDigit(fullSpan[paramEnd]) || fullSpan[paramEnd] is '_' or '$')) + paramEnd++; + + paramEnd = SkipHorizontalWhitespace(fullSpan, paramEnd); + + if (paramEnd + 1 >= fullSpan.Length || + fullSpan[paramEnd] != '=' || fullSpan[paramEnd + 1] != '>') + continue; + + arrowSearchEnd = paramEnd + 2; + } + else continue; + + int bodyStart = SkipHorizontalWhitespace(fullSpan, arrowSearchEnd); + if (bodyStart >= fullSpan.Length) continue; + + if (fullSpan[bodyStart] == '{') + { + int braceEnd = FindMatchingBrace(fullJs, bodyStart); + if (braceEnd < 0) continue; + + int end = braceEnd + 1; + if (end < fullSpan.Length && fullSpan[end] == ';') end++; + return fullJs[valueStart..end]; + } + else + { + int exprEnd = SkipValue(fullJs, bodyStart); + if (exprEnd <= bodyStart) continue; + if (exprEnd < fullSpan.Length && fullSpan[exprEnd] is ';' or ',') exprEnd++; + return fullJs[valueStart..exprEnd]; + } + } + return null; + } + + public static string? FindValueDefinition(string fullJs, string name) + { + var fullSpan = fullJs.AsSpan(); + var target = string.Concat(name, "="); + var targetSpan = target.AsSpan(); + + int searchFrom = 0; + while (searchFrom < fullSpan.Length) + { + int idx = fullSpan[searchFrom..].IndexOf(targetSpan, StringComparison.Ordinal); + if (idx < 0) return null; + idx += searchFrom; + searchFrom = idx + targetSpan.Length; + + if (idx > 0 && IsIdentChar(fullSpan[idx - 1])) continue; + + int afterEq = idx + name.Length + 1; + if (afterEq < fullSpan.Length && fullSpan[afterEq] == '=') continue; + if (!IsStatementBoundary(fullSpan, idx)) continue; + + int valueStart = SkipHorizontalWhitespace(fullSpan, afterEq); + if (valueStart >= fullSpan.Length) continue; + + // Check for "function" keyword — 8 chars + if (valueStart + 8 <= fullSpan.Length && + fullSpan.Slice(valueStart, 8).SequenceEqual("function")) + continue; + if (IsArrowFunctionStart(fullJs, valueStart)) continue; + + int valueEnd = SkipValue(fullJs, valueStart); + if (valueEnd <= valueStart) continue; + if (valueEnd < fullSpan.Length && fullSpan[valueEnd] is ';' or ',') valueEnd++; + + var valueSpan = fullSpan[valueStart..valueEnd]; + if (!IsValidValue(valueSpan)) continue; + + return fullJs[valueStart..valueEnd]; + } + return null; + } + + /// + /// Fallback for object definitions (handles cases like TZ = {...}). + /// + public static string? FindObjectDefinition(string fullJs, string name) + { + var fullSpan = fullJs.AsSpan(); + var nameSpan = name.AsSpan(); + int searchFrom = 0; + + while (searchFrom < fullSpan.Length) + { + int idx = fullSpan[searchFrom..].IndexOf(nameSpan, StringComparison.Ordinal); + if (idx < 0) return null; + idx += searchFrom; + searchFrom = idx + name.Length; + + // Word boundary: before + if (idx > 0 && (char.IsLetterOrDigit(fullSpan[idx - 1]) || + fullSpan[idx - 1] is '_' or '$' or '.')) + continue; + + // Word boundary: after + int afterName = idx + name.Length; + if (afterName < fullSpan.Length && + (char.IsLetterOrDigit(fullSpan[afterName]) || fullSpan[afterName] is '_' or '$')) + continue; + + int pos = SkipWhitespace(fullSpan, afterName); + if (pos >= fullSpan.Length || fullSpan[pos] != '=') continue; + pos++; + + // Skip '==' (comparison) + if (pos < fullSpan.Length && fullSpan[pos] == '=') continue; + + pos = SkipWhitespace(fullSpan, pos); + if (pos >= fullSpan.Length) continue; + + char openChar = fullSpan[pos]; + if (openChar == '{') + { + int end = FindMatchingBrace(fullJs, pos); + if (end > pos) return fullJs[pos..(end + 1)]; + } + else if (openChar == '[') + { + int end = FindMatchingBracket(fullJs, pos); + if (end > pos) return fullJs[pos..(end + 1)]; + } + } + return null; + } + + public static JsFunctionInfo? FindFunctionByName(string js, string name) + { + var jsSpan = js.AsSpan(); + + // Pattern 1: name=function( + var funcTarget = string.Concat(name, "=function("); + int idx = jsSpan.IndexOf(funcTarget.AsSpan(), StringComparison.Ordinal); + if (idx >= 0 && (idx == 0 || !IsIdentChar(jsSpan[idx - 1]))) + { + int funcStart = idx + name.Length + 1; + int braceOffset = jsSpan[funcStart..].IndexOf('{'); + if (braceOffset >= 0 && braceOffset <= 300) + { + int braceStart = funcStart + braceOffset; + int braceEnd = FindMatchingBrace(js, braceStart); + if (braceEnd > 0) + return new JsFunctionInfo(name, js[funcStart..(braceEnd + 1)], idx); + } + } + + // Pattern 2: name=...=> (arrow function) + var eqTarget = string.Concat(name, "="); + var eqTargetSpan = eqTarget.AsSpan(); + + int searchFrom = 0; + while (searchFrom < jsSpan.Length) + { + idx = jsSpan[searchFrom..].IndexOf(eqTargetSpan, StringComparison.Ordinal); + if (idx < 0) break; + idx += searchFrom; + searchFrom = idx + eqTargetSpan.Length; + + if (idx > 0 && IsIdentChar(jsSpan[idx - 1])) continue; + + int afterEq = idx + name.Length + 1; + if (afterEq >= jsSpan.Length || jsSpan[afterEq] == '=') continue; + + int pos = SkipHorizontalWhitespace(jsSpan, afterEq); + + bool isArrow = false; + if (pos < jsSpan.Length && jsSpan[pos] == '(') + { + int pe = FindMatchingParen(js, pos); + if (pe > 0) + { + int ap = SkipHorizontalWhitespace(jsSpan, pe + 1); + if (ap + 1 < jsSpan.Length && jsSpan[ap] == '=' && jsSpan[ap + 1] == '>') + isArrow = true; + } + } + else if (pos < jsSpan.Length && (char.IsLetter(jsSpan[pos]) || jsSpan[pos] is '_' or '$')) + { + int pe = pos; + while (pe < jsSpan.Length && + (char.IsLetterOrDigit(jsSpan[pe]) || jsSpan[pe] is '_' or '$')) + pe++; + int ap = SkipHorizontalWhitespace(jsSpan, pe); + if (ap + 1 < jsSpan.Length && jsSpan[ap] == '=' && jsSpan[ap + 1] == '>') + isArrow = true; + } + + if (!isArrow) continue; + + int funcStart2 = idx + name.Length + 1; + int braceOffset2 = jsSpan[funcStart2..].IndexOf('{'); + if (braceOffset2 >= 0 && braceOffset2 <= 300) + { + int braceStart = funcStart2 + braceOffset2; + int braceEnd = FindMatchingBrace(js, braceStart); + if (braceEnd > 0) + return new JsFunctionInfo(name, js[funcStart2..(braceEnd + 1)], idx); + } + } + + return null; + } + + public static HashSet FindReferencedNames(string code) + { + var result = new HashSet(32); + var span = code.AsSpan(); + int i = 0; + + while (i < span.Length) + { + char c = span[i]; + + // Skip strings + if (c is '"' or '\'' or '`') + { + i = SkipString(code, i); + continue; + } + + // Skip comments + if (c == '/' && i + 1 < span.Length) + { + if (span[i + 1] == '/') + { + int nlPos = span[i..].IndexOf('\n'); + i = nlPos >= 0 ? i + nlPos : span.Length; + continue; + } + if (span[i + 1] == '*') + { + i += 2; + int endComment = span[i..].IndexOf("*/"); + i = endComment >= 0 ? i + endComment + 2 : span.Length; + continue; + } + } + + // Identifier start + if (s_identStartChars.Contains(c)) + { + int start = i; + i++; + while (i < span.Length && + (char.IsLetterOrDigit(span[i]) || span[i] is '_' or '$')) + i++; + + int len = i - start; + if (len is >= 2 and <= 20 && + (start == 0 || span[start - 1] != '.')) + { + var ident = span.Slice(start, len).ToString(); + if (!SkipNames.Contains(ident)) + result.Add(ident); + } + continue; + } + + // Skip numeric tokens + if (char.IsAsciiDigit(c)) + { + while (i < span.Length && + (char.IsLetterOrDigit(span[i]) || span[i] is '_' or '$' or '.')) + i++; + continue; + } + + i++; + } + + return result; + } + + [MethodImpl(MethodImplOptions.AggressiveInlining)] + public static bool IsIdentChar(char c) => + char.IsLetterOrDigit(c) || c is '_' or '$' or '.'; + + public static int FindMatchingBrace(string js, int pos) => FindMatching(js, pos, '{', '}'); + public static int FindMatchingBracket(string js, int pos) => FindMatching(js, pos, '[', ']'); + public static int FindMatchingParen(string js, int pos) => FindMatching(js, pos, '(', ')'); + + public static int SkipString(string js, int i) + { + if (i >= js.Length) return i; + char quote = js[i++]; + + if (quote == '`') + { + while (i < js.Length) + { + char c = js[i]; + if (c == '\\' && i + 1 < js.Length) { i += 2; continue; } + if (c == '`') return i + 1; + if (c == '$' && i + 1 < js.Length && js[i + 1] == '{') + { + i += 2; + int d = 1; + while (i < js.Length && d > 0) + { + if (js[i] is '"' or '\'' or '`') { i = SkipString(js, i); continue; } + if (js[i] == '{') d++; + else if (js[i] == '}') d--; + if (d > 0) i++; + } + if (i < js.Length) i++; + continue; + } + i++; + } + return i; + } + + // Optimized: scan for quote or backslash using IndexOfAny + var span = js.AsSpan(); + while (i < span.Length) + { + int found = span[i..].IndexOfAny(quote, '\\'); + if (found < 0) return span.Length; // unterminated string + i += found; + + if (span[i] == '\\') { i += 2; continue; } + + return i + 1; // closing quote + } + + return i; + } + + public readonly record struct JsFunctionInfo(string Name, string Code, int Position); + + // ═══════════════════════════════════════════════════════════════ + // PRIVATE HELPERS + // ═══════════════════════════════════════════════════════════════ + + /// Skips ' ' and '\t', returns new position. + [MethodImpl(MethodImplOptions.AggressiveInlining)] + private static int SkipHorizontalWhitespace(ReadOnlySpan span, int pos) + { + while (pos < span.Length && span[pos] is ' ' or '\t') pos++; + return pos; + } + + /// Skips all whitespace chars, returns new position. + [MethodImpl(MethodImplOptions.AggressiveInlining)] + private static int SkipWhitespace(ReadOnlySpan span, int pos) + { + while (pos < span.Length && char.IsWhiteSpace(span[pos])) pos++; + return pos; + } + + private static HashSet FindTypeofGuardVars( + string code, Dictionary definitions, string? dictName) + { + var result = new HashSet(); + + foreach (Match m in TypeofUndefinedRegex().Matches(code)) + { + var varName = m.Groups[1].Value; + if (!definitions.ContainsKey(varName) && + !SkipNames.Contains(varName) && varName != dictName) + result.Add(varName); + } + + foreach (Match m in TypeofArrayRegex().Matches(code)) + { + var varName = m.Groups[1].Value; + if (!definitions.ContainsKey(varName) && + !SkipNames.Contains(varName) && varName != dictName) + result.Add(varName); + } + + return result; + } + + private static string? FindBracketArrayDefinition(string fullJs, string name) + { + var fullSpan = fullJs.AsSpan(); + var target = string.Concat(name, "=["); + var targetSpan = target.AsSpan(); + + int searchFrom = 0; + while (searchFrom < fullSpan.Length) + { + int idx = fullSpan[searchFrom..].IndexOf(targetSpan, StringComparison.Ordinal); + if (idx < 0) break; + idx += searchFrom; + searchFrom = idx + targetSpan.Length; + + if (idx > 0 && IsIdentChar(fullSpan[idx - 1])) continue; + + int bracketPos = idx + name.Length + 1; + int bracketEnd = FindMatchingBracket(fullJs, bracketPos); + if (bracketEnd < 0) continue; + + int elementCount = CountTopLevelCommas(fullJs, bracketPos + 1, bracketEnd) + 1; + if (elementCount < 50) continue; + + int sampleEnd = Math.Min(bracketPos + 500, bracketEnd); + var sampleSpan = fullSpan[bracketPos..sampleEnd]; + if (!sampleSpan.ContainsAny(s_quoteChars)) continue; + + int end = bracketEnd + 1; + if (end < fullSpan.Length && fullSpan[end] == ';') end++; + + var valuePart = fullSpan[bracketPos..end]; + return string.Concat("var ".AsSpan(), name.AsSpan(), "=".AsSpan(), valuePart); + } + return null; + } + + private static string? FindSplitArrayDefinition(string fullJs, string name) + { + var fullSpan = fullJs.AsSpan(); + + var targetSingle = string.Concat(name, "='"); + var targetDouble = string.Concat(name, "=\""); + ReadOnlySpan targets = [targetSingle, targetDouble]; + + foreach (var target in targets) + { + var targetSpan = target.AsSpan(); + + int searchFrom = 0; + while (searchFrom < fullSpan.Length) + { + int idx = fullSpan[searchFrom..].IndexOf(targetSpan, StringComparison.Ordinal); + if (idx < 0) break; + idx += searchFrom; + searchFrom = idx + targetSpan.Length; + + if (idx > 0 && IsIdentChar(fullSpan[idx - 1])) continue; + + int eqPos = idx + name.Length; + if (eqPos + 1 < fullSpan.Length && + fullSpan[eqPos] == '=' && fullSpan[eqPos + 1] == '=') + continue; + + int quoteStart = idx + name.Length + 1; + int quoteEnd = SkipString(fullJs, quoteStart); + if (quoteEnd <= quoteStart) continue; + + int afterString = SkipHorizontalWhitespace(fullSpan, quoteEnd); + + if (afterString + 7 > fullSpan.Length) continue; + if (!fullSpan.Slice(afterString, 7).SequenceEqual(".split(")) continue; + + int splitParenStart = afterString + 6; + int splitParenEnd = FindMatchingParen(fullJs, splitParenStart); + if (splitParenEnd < 0) continue; + + int end = splitParenEnd + 1; + if (end < fullSpan.Length && fullSpan[end] is ';' or ',') end++; + + int stringLen = quoteEnd - quoteStart - 2; + if (stringLen < 100) continue; + + var stringContent = fullSpan.Slice(quoteStart + 1, quoteEnd - quoteStart - 2); + + // ═══ Extract separator from .split("X") and count elements ═══ + int sepAreaStart = splitParenStart + 1; + int sepPos = SkipHorizontalWhitespace(fullSpan, sepAreaStart); + if (sepPos >= fullSpan.Length || fullSpan[sepPos] is not ('"' or '\'')) continue; + + char sepQuote = fullSpan[sepPos]; + int sepContentStart = sepPos + 1; + int sepContentEnd = -1; + for (int si = sepContentStart; si < fullSpan.Length; si++) + { + if (fullSpan[si] == '\\' && si + 1 < fullSpan.Length) { si++; continue; } + if (fullSpan[si] == sepQuote) { sepContentEnd = si; break; } + } + if (sepContentEnd < 0 || sepContentEnd == sepContentStart || + sepContentEnd - sepContentStart > 10) continue; + + var separator = fullSpan[sepContentStart..sepContentEnd]; + + int separatorCount = 0; + int sPos = 0; + while (sPos <= stringContent.Length - separator.Length) + { + int found = stringContent[sPos..].IndexOf(separator, StringComparison.Ordinal); + if (found < 0) break; + separatorCount++; + sPos += found + separator.Length; + } + if (separatorCount + 1 < 50) continue; + // ═══ END ═══ + + var definitionSpan = fullSpan[(idx + name.Length + 1)..end]; + + if (definitionSpan.Length > 0 && definitionSpan[^1] == ',') + { + var trimmed = definitionSpan[..^1]; + return ConcatSpans( + "var ".AsSpan(), name.AsSpan(), "=".AsSpan(), trimmed, ";".AsSpan()); + } + + return string.Concat( + "var ".AsSpan(), name.AsSpan(), "=".AsSpan(), definitionSpan); + } + } + return null; + } + + private static int CountTopLevelCommas(string js, int from, int to) + { + int count = 0, depth = 0, i = from; + while (i < to) + { + char c = js[i]; + if (c is '"' or '\'' or '`') { i = SkipString(js, i); continue; } + if (c is '(' or '[' or '{') depth++; + else if (c is ')' or ']' or '}') depth--; + else if (c == ',' && depth == 0) count++; + i++; + } + return count; + } + + private static bool IsArrowFunctionStart(string js, int valueStart) + { + var span = js.AsSpan(); + if (valueStart >= span.Length) return false; + + if (span[valueStart] == '(') + { + int parenEnd = FindMatchingParen(js, valueStart); + if (parenEnd < 0) return false; + + int after = SkipHorizontalWhitespace(span, parenEnd + 1); + return after + 1 < span.Length && span[after] == '=' && span[after + 1] == '>'; + } + + if (char.IsLetter(span[valueStart]) || span[valueStart] is '_' or '$') + { + int paramEnd = valueStart; + while (paramEnd < span.Length && + (char.IsLetterOrDigit(span[paramEnd]) || span[paramEnd] is '_' or '$')) + paramEnd++; + + paramEnd = SkipHorizontalWhitespace(span, paramEnd); + return paramEnd + 1 < span.Length && span[paramEnd] == '=' && span[paramEnd + 1] == '>'; + } + + return false; + } + + private static bool IsStatementBoundary(ReadOnlySpan fullJs, int pos) + { + int i = pos - 1; + while (i >= 0 && fullJs[i] is ' ' or '\t') i--; + + if (i < 0) return true; + + char prev = fullJs[i]; + + if (prev is ';' or '{' or '}' or '\n' or '\r' or ',') + return true; + + if (i >= 3 && fullJs.Slice(i - 3, 4).SequenceEqual("var ")) return true; + if (i >= 3 && fullJs.Slice(i - 3, 4).SequenceEqual("let ")) return true; + if (i >= 5 && fullJs.Slice(i - 5, 6).SequenceEqual("const ")) return true; + + return false; + } + + private static bool IsValidValue(ReadOnlySpan value) + { + var v = value.TrimEnd([';', ',', ' ', '\n', '\r']); + if (v.Length == 0) return false; + + if (v.Length > 5 && v.IndexOf("'+") >= 0 && v.IndexOf("+'") >= 0) return false; + if (v.StartsWith("function")) return false; + if (v.StartsWith("new ")) return true; + + if (v[0] is '-' or '.' || char.IsAsciiDigit(v[0])) + return v.Length < 30 && v.IndexOf(' ') < 0; + if ((v[0] == '{' && v[^1] == '}') || (v[0] == '[' && v[^1] == ']')) + return true; + if (v[0] is '"' or '\'') + return v.IndexOf('+') < 0 && v.Length < 200; + + if (v.Length < 100) + { + if (v.IndexOf("'+") >= 0 || v.IndexOf("+'") >= 0 || v.IndexOf("=\"") >= 0) + return false; + return true; + } + + return false; + } + + private static int SkipValue(string js, int i) + { + var span = js.AsSpan(); + if (i >= span.Length) return i; + + char c = span[i]; + + // Skip function(...) { ... } + if (c == 'f' && i + 8 <= span.Length && span.Slice(i, 8).SequenceEqual("function")) + { + int braceOffset = span[(i + 8)..].IndexOf('{'); + if (braceOffset < 0 || braceOffset > 200) return i; + int braceStart = i + 8 + braceOffset; + int braceEnd = FindMatchingBrace(js, braceStart); + return braceEnd >= 0 ? braceEnd + 1 : i; + } + + if (c == '{') { int end = FindMatchingBrace(js, i); return end >= 0 ? end + 1 : i; } + if (c == '[') { int end = FindMatchingBracket(js, i); return end >= 0 ? end + 1 : i; } + if (c == '(') { int end = FindMatchingParen(js, i); return end >= 0 ? end + 1 : i; } + if (c is '"' or '\'' or '`') return SkipString(js, i); + + // Skip new Class(...) + if (c == 'n' && i + 4 <= span.Length && span.Slice(i, 4).SequenceEqual("new ")) + { + i += 4; + while (i < span.Length && char.IsWhiteSpace(span[i])) i++; + i = SkipValue(js, i); + while (i < span.Length && span[i] == '(') + { + int end = FindMatchingParen(js, i); + if (end < 0) break; + i = end + 1; + } + return i; + } + + // Skip to next statement boundary + int depth = 0; + while (i < span.Length) + { + char ch = span[i]; + if (ch is '"' or '\'' or '`') { i = SkipString(js, i); continue; } + if (ch is '(' or '[' or '{') depth++; + if (ch is ')' or ']' or '}') { if (depth == 0) return i; depth--; } + if (depth == 0 && ch is ';' or '\n' or ',') return i; + i++; + } + + return i; + } + + /// + /// Universal matching bracket finder, respecting strings and comments. + /// + private static int FindMatching(string js, int openPos, char open, char close) + { + int depth = 1; + int i = openPos + 1; + var span = js.AsSpan(); + + while (i < span.Length && depth > 0) + { + char c = span[i]; + + if (c == open) { depth++; i++; continue; } + if (c == close) { depth--; if (depth == 0) return i; i++; continue; } + + switch (c) + { + case '"' or '\'' or '`': + i = SkipString(js, i); + continue; + case '/' when i + 1 < span.Length: + if (span[i + 1] == '/') + { + int nlPos = span[i..].IndexOf('\n'); + i = nlPos >= 0 ? i + nlPos : span.Length; + continue; + } + if (span[i + 1] == '*') + { + i += 2; + int endComment = span[i..].IndexOf("*/"); + i = endComment >= 0 ? i + endComment + 2 : span.Length; + continue; + } + break; + } + i++; + } + + return depth == 0 ? i - 1 : -1; + } + + // ═══════════════════════════════════════════════════════════════ + // SPAN-BASED PARSING HELPERS + // ═══════════════════════════════════════════════════════════════ + + /// + /// Zero-alloc parse of "content".split("separator") pattern. + /// + private static bool TryParseSplitExpression( + ReadOnlySpan def, + out ReadOnlySpan content, + out ReadOnlySpan separator) + { + content = default; + separator = default; + + int quoteStart = def.IndexOfAny(s_quoteChars); + if (quoteStart < 0) return false; + + char q = def[quoteStart]; + if (q == '`') return false; + + int contentStart = quoteStart + 1; + int contentEnd = -1; + int i = contentStart; + while (i < def.Length) + { + if (def[i] == '\\' && i + 1 < def.Length) { i += 2; continue; } + if (def[i] == q) { contentEnd = i; break; } + i++; + } + if (contentEnd < 0) return false; + + int afterContent = contentEnd + 1; + var rest = def[afterContent..]; + + // Skip whitespace + int ws = 0; + while (ws < rest.Length && rest[ws] is ' ' or '\t') ws++; + rest = rest[ws..]; + + if (!rest.StartsWith(".split(")) return false; + rest = rest[7..]; // skip ".split(" + + ws = 0; + while (ws < rest.Length && rest[ws] is ' ' or '\t') ws++; + rest = rest[ws..]; + + if (rest.Length == 0 || rest[0] is not ('"' or '\'')) return false; + char sq = rest[0]; + int sepStart = 1; + int sepEnd = -1; + i = sepStart; + while (i < rest.Length) + { + if (rest[i] == '\\' && i + 1 < rest.Length) { i += 2; continue; } + if (rest[i] == sq) { sepEnd = i; break; } + i++; + } + if (sepEnd < 0) return false; + + content = def[contentStart..contentEnd]; + separator = rest[sepStart..sepEnd]; + return true; + } + + /// + /// Splits content by separator. Single allocation for result array. + /// + private static string[] SplitToArray(ReadOnlySpan content, ReadOnlySpan separator) + { + // Count occurrences first + int count = 1; + int pos = 0; + while (pos <= content.Length - separator.Length) + { + int idx = content[pos..].IndexOf(separator, StringComparison.Ordinal); + if (idx < 0) break; + count++; + pos += idx + separator.Length; + } + + var result = new string[count]; + int resultIdx = 0; + pos = 0; + + while (pos <= content.Length - separator.Length) + { + int idx = content[pos..].IndexOf(separator, StringComparison.Ordinal); + if (idx < 0) break; + result[resultIdx++] = content.Slice(pos, idx).ToString(); + pos += idx + separator.Length; + } + + result[resultIdx] = content[pos..].ToString(); + return result; + } + + /// + /// Splits bracket array elements, trimming quotes and whitespace. + /// + private static string[] SplitBracketElements(ReadOnlySpan inner) + { + var list = new List(64); + int i = 0; + + while (i < inner.Length) + { + while (i < inner.Length && inner[i] is ' ' or '\t' or '\n' or '\r') i++; + if (i >= inner.Length) break; + if (inner[i] == ',') { i++; continue; } + + if (inner[i] is '"' or '\'') + { + char q = inner[i]; + i++; + int start = i; + while (i < inner.Length) + { + if (inner[i] == '\\' && i + 1 < inner.Length) { i += 2; continue; } + if (inner[i] == q) break; + i++; + } + int elemLen = i - start; + if (elemLen > 0) + list.Add(inner.Slice(start, elemLen).ToString()); + if (i < inner.Length) i++; // skip closing quote + } + else + { + int start = i; + while (i < inner.Length && inner[i] is not (',' or ' ' or '\t' or '\n' or '\r')) + i++; + var elem = inner[start..i].Trim(" \t\n\r"); + if (elem.Length > 0) + list.Add(elem.ToString()); + } + } + + return [.. list]; + } + + /// + /// Parses comma-separated identifiers from span into result set. + /// + private static void ParseCommaSeparatedIdents(ReadOnlySpan span, HashSet result) + { + int start = 0; + while (start < span.Length) + { + // Skip whitespace + while (start < span.Length && span[start] is ' ' or '\t' or '\n' or '\r') start++; + if (start >= span.Length) break; + + // Find comma or end + int end = span[start..].IndexOf(','); + ReadOnlySpan param; + if (end >= 0) + { + param = span.Slice(start, end).Trim(); + start = start + end + 1; + } + else + { + param = span[start..].Trim(); + start = span.Length; + } + + if (param.Length > 0) + result.Add(param.ToString()); + } + } + + /// + /// Concatenates spans into a single string via thread-local StringBuilder. + /// + private static string ConcatSpans( + ReadOnlySpan a, ReadOnlySpan b, + ReadOnlySpan c, ReadOnlySpan d) + { + var sb = t_concatBuilder ??= new StringBuilder(256); + sb.Clear(); + sb.Append(a).Append(b).Append(c).Append(d); + return sb.ToString(); + } + + private static string ConcatSpans( + ReadOnlySpan a, ReadOnlySpan b, + ReadOnlySpan c, ReadOnlySpan d, + ReadOnlySpan e) + { + var sb = t_concatBuilder ??= new StringBuilder(256); + sb.Clear(); + sb.Append(a).Append(b).Append(c).Append(d).Append(e); + return sb.ToString(); + } + + // ═══════════════════════════════════════════════════════════════ + // GENERATED REGEX + // ═══════════════════════════════════════════════════════════════ + + [GeneratedRegex(@"typeof\s+([a-zA-Z_$][\w$]*)\s*===?\s*""undefined""")] + private static partial Regex TypeofUndefinedRegex(); + + [GeneratedRegex(@"typeof\s+([a-zA-Z_$][\w$]*)\s*===?\s*[a-zA-Z_$]{1,3}\[\d+\]")] + private static partial Regex TypeofArrayRegex(); +} \ No newline at end of file diff --git a/Core/Youtube/Bridge/Common/PlayerContext.cs b/Core/Youtube/Bridge/Common/PlayerContext.cs new file mode 100644 index 0000000..2a1bce0 --- /dev/null +++ b/Core/Youtube/Bridge/Common/PlayerContext.cs @@ -0,0 +1,118 @@ +using System.Text.RegularExpressions; + +namespace LMP.Core.Youtube.Bridge.Common; + +/// +/// Контекст версии плеера YouTube + закэшированный base.js. +/// Иммутабельный, потокобезопасный. +/// +public sealed partial class PlayerContext +{ + public string Version { get; } + public string BaseJs { get; } + public DateTimeOffset CachedAt { get; } + + public PlayerContext(string version, string baseJs) + { + Version = version; + BaseJs = baseJs; + CachedAt = DateTimeOffset.UtcNow; + } + + public bool IsValid() => + (DateTimeOffset.UtcNow - CachedAt).TotalDays < 7; + + /// Сохраняет base.js в кэш. + public async Task SaveCacheAsync() + { + try + { + var path = GetCachePath(Version); + Directory.CreateDirectory(Path.GetDirectoryName(path)!); + await File.WriteAllTextAsync(path, BaseJs); + + // Cleanup старых версий + CleanupOldVersions(); + } + catch (Exception ex) + { + Log.Debug($"[PlayerContext] Cache save failed: {ex.Message}"); + } + } + + /// Загружает base.js из кэша. + public static PlayerContext? LoadFromCache(string version) + { + try + { + var path = GetCachePath(version); + if (!File.Exists(path)) return null; + + var age = DateTimeOffset.UtcNow - File.GetLastWriteTimeUtc(path); + if (age.TotalDays > 7) + { + File.Delete(path); + return null; + } + + var baseJs = File.ReadAllText(path); + return new PlayerContext(version, baseJs); + } + catch + { + return null; + } + } + + private static string GetCachePath(string version) => + Path.Combine(G.Folder.NTokenCache, $"player_{version}_basejs.txt"); + + private static void CleanupOldVersions() + { + try + { + var files = Directory.GetFiles(G.Folder.NTokenCache, "player_*_basejs.txt"); + var toDelete = files + .Select(f => new FileInfo(f)) + .OrderByDescending(f => f.LastWriteTimeUtc) + .Skip(3) // Keep last 3 versions + .ToArray(); + + foreach (var file in toDelete) + file.Delete(); + } + catch { /* ignore */ } + } + + /// Определяет версию плеера и возможные URL base.js. + public static async Task<(string Version, string[] Urls)?> DetectVersionAsync( + HttpClient http, + CancellationToken ct = default) + { + try + { + var iframeApi = await http.GetStringAsync( + "https://www.youtube.com/iframe_api", ct); + + var match = PlayerVersionRegex().Match(iframeApi); + if (!match.Success) return null; + + var version = match.Groups[1].Value; + var urls = new[] + { + $"https://www.youtube.com/s/player/{version}/player_es6.vflset/en_US/base.js", + $"https://www.youtube.com/s/player/{version}/player_ias.vflset/en_US/base.js", + $"https://www.youtube.com/s/player/{version}/player_ias.vflset/ru_RU/base.js", + }; + + return (version, urls); + } + catch + { + return null; + } + } + + [GeneratedRegex(@"player\\?/([0-9a-fA-F]{8})\\?/")] + private static partial Regex PlayerVersionRegex(); +} \ No newline at end of file diff --git a/Core/Youtube/Bridge/Common/PlayerContextManager.cs b/Core/Youtube/Bridge/Common/PlayerContextManager.cs new file mode 100644 index 0000000..63a33bd --- /dev/null +++ b/Core/Youtube/Bridge/Common/PlayerContextManager.cs @@ -0,0 +1,84 @@ +namespace LMP.Core.Youtube.Bridge.Common; + +/// +/// Единая точка управления версией плеера и base.js. +/// Singleton, потокобезопасный. +/// +public sealed class PlayerContextManager +{ + private readonly HttpClient _http; + private readonly SemaphoreSlim _lock = new(1, 1); + private PlayerContext? _current; + + public PlayerContextManager(HttpClient http) + { + _http = http; + } + + /// Получает актуальный контекст плеера (из кэша или скачивает). + public async Task GetOrLoadAsync(CancellationToken ct = default) + { + // Fast path + if (_current?.IsValid() == true) + return _current; + + await _lock.WaitAsync(ct); + try + { + // Double-check + if (_current?.IsValid() == true) + return _current; + + // 1. Определяем версию + var versionInfo = await PlayerContext.DetectVersionAsync(_http, ct); + if (versionInfo is null) + throw new InvalidOperationException("Failed to detect player version"); + + var (version, urls) = versionInfo.Value; + + // 2. Проверяем кэш + if (_current?.Version == version) + return _current; + + var cached = PlayerContext.LoadFromCache(version); + if (cached is not null) + { + _current = cached; + Log.Debug($"[PlayerContext] Loaded from cache: {version}"); + return cached; + } + + // 3. Скачиваем + foreach (var url in urls) + { + try + { + Log.Debug($"[PlayerContext] Downloading: {url}"); + var baseJs = await _http.GetStringAsync(url, ct); + + _current = new PlayerContext(version, baseJs); + await _current.SaveCacheAsync(); + + Log.Info($"[PlayerContext] Loaded fresh: {version} ({baseJs.Length / 1024}KB)"); + return _current; + } + catch (Exception ex) + { + Log.Debug($"[PlayerContext] Download failed: {ex.Message}"); + } + } + + throw new InvalidOperationException("Failed to download base.js"); + } + finally + { + _lock.Release(); + } + } + + /// Инвалидирует текущий контекст. + public void Invalidate() + { + _current = null; + } +} \ No newline at end of file diff --git a/Core/Youtube/Bridge/DashManifest.cs b/Core/Youtube/Bridge/DashManifest.cs index a1495d2..c98b949 100644 --- a/Core/Youtube/Bridge/DashManifest.cs +++ b/Core/Youtube/Bridge/DashManifest.cs @@ -61,6 +61,8 @@ public partial class StreamData(XElement content) : IStreamData .Pipe(WebUtility.UrlDecode); private bool IsAudioOnly => content.Element("AudioChannelConfiguration") is not null; + + public string? MimeType => content.Attribute("mimeType")?.Value; public string? AudioCodec => IsAudioOnly ? (string?)content.Attribute("codecs") : null; diff --git a/Core/Youtube/Bridge/IStreamData.cs b/Core/Youtube/Bridge/IStreamData.cs index 3e02dab..8394d7e 100644 --- a/Core/Youtube/Bridge/IStreamData.cs +++ b/Core/Youtube/Bridge/IStreamData.cs @@ -14,6 +14,8 @@ internal interface IStreamData long? Bitrate { get; } + string? MimeType { get; } + string? Container { get; } string? AudioCodec { get; } diff --git a/Core/Youtube/Bridge/NToken/NTokenDecryptor.cs b/Core/Youtube/Bridge/NToken/NTokenDecryptor.cs new file mode 100644 index 0000000..2ac875d --- /dev/null +++ b/Core/Youtube/Bridge/NToken/NTokenDecryptor.cs @@ -0,0 +1,228 @@ +using LMP.Core.Youtube.Bridge.Common; + +namespace LMP.Core.Youtube.Bridge.NToken; + +public sealed partial class NTokenDecryptor(PlayerContextManager playerManager) : JsDecryptorBase(playerManager, G.FilePath.NTokenCache, 2000, 500) +{ + public async ValueTask DecryptAsync(string nToken, CancellationToken ct = default) + { + if (string.IsNullOrWhiteSpace(nToken)) return nToken; + if (Cache.TryGet(nToken, out var cached)) return cached; + + await EnsureInitializedAsync(ct); + + var result = TryInvokeJs(nToken, "NToken"); + return result ?? nToken; + } + + protected override void InitializeCore(PlayerContext context) + { + Log.Info("[NToken] Initializing..."); + var sw = System.Diagnostics.Stopwatch.StartNew(); + + var funcName = FindNTokenFunctionName(context.BaseJs); + if (funcName is null) + { + Log.Error("[NToken] n-token function not found"); + return; + } + + Log.Debug($"[NToken] Found entry function: {funcName}"); + + const string testToken = "WDZxqubC-kfdqV5cl60"; + + var success = TryInitJsEngines( + context, + funcName, + BuildNTokenWrapperScript, + testToken, + BuildNTokenBundle); + + sw.Stop(); + if (success) + Log.Info($"[NToken] Ready in {sw.ElapsedMilliseconds}ms"); + else + Log.Error($"[NToken] All init strategies failed after {sw.ElapsedMilliseconds}ms"); + } + + private static string BuildNTokenWrapperScript(string funcName) => $$""" + function __decryptorTransform(n) { + try { + var f = window['{{funcName}}']; + if (typeof f !== 'function') return n; + var r = f(n); + return (typeof r === 'string' && r !== n) ? r : n; + } catch(e) { return n; } + } + """; + + /// + /// Кастомный builder бандла для NToken. + /// Использует общий BuildDefaultBundle из базового класса. + /// + private string? BuildNTokenBundle(string baseJs, string funcName) => + BuildDefaultBundle(baseJs, funcName); + + // ═══════════════════════════════════════════════════════════════ + // FUNCTION NAME DISCOVERY + // ═══════════════════════════════════════════════════════════════ + + private static string? FindNTokenFunctionName(string baseJs) + { + return FindBySelfReferences(baseJs) + ?? FindByWrapperArray(baseJs) + ?? FindByEnhancedPattern(baseJs) + ?? FindByNumericMarker(baseJs); + } + + private static string? FindBySelfReferences(string baseJs) + { + var match = SelfReferencesRegex().Match(baseJs); + if (!match.Success) return null; + + var arrayName = match.Groups[1].Value; + Log.Debug($"[NToken] Self-ref array '{arrayName}' at position {match.Index}"); + + var containingFunc = FindContainingFunction(baseJs, match.Index); + if (containingFunc is null) return null; + + Log.Debug($"[NToken] Containing function: {containingFunc}"); + + var wrapper = FindWrapperFor(baseJs, containingFunc); + var result = wrapper ?? containingFunc; + Log.Debug($"[NToken] Found via self-references: {result}"); + return result; + } + + private static string? FindByWrapperArray(string baseJs) + { + var wrapperRegex = WrapperFunctionRegex(); + foreach (System.Text.RegularExpressions.Match match in wrapperRegex.Matches(baseJs)) + { + var wrapperName = match.Groups[1].Value; + var targetFunc = match.Groups[2].Value; + + var arrayPattern = $@"(\w+)\s*=\s*\[\s*{System.Text.RegularExpressions.Regex.Escape(wrapperName)}\s*\]"; + var arrayMatch = System.Text.RegularExpressions.Regex.Match(baseJs, arrayPattern); + + if (arrayMatch.Success) + { + var arrayName = arrayMatch.Groups[1].Value; + var usagePattern = $@"{System.Text.RegularExpressions.Regex.Escape(arrayName)}\s*\[\s*0\s*\]\s*\("; + if (System.Text.RegularExpressions.Regex.IsMatch(baseJs, usagePattern)) + { + Log.Debug($"[NToken] Wrapper array: {arrayName} = [{wrapperName}], target: {targetFunc}"); + return wrapperName; + } + } + } + return null; + } + + private static string? FindByEnhancedPattern(string baseJs) + { + var candidates = new List<(string Name, int Score)>(); + + var funcRegex = FunctionWithSplitJoinRegex(); + foreach (System.Text.RegularExpressions.Match match in funcRegex.Matches(baseJs)) + { + var funcName = match.Groups[1].Value; + var funcBody = match.Value; + + int score = 0; + if (funcBody.Contains("split")) score += 2; + if (funcBody.Contains("join")) score += 2; + if (System.Text.RegularExpressions.Regex.IsMatch(funcBody, @"typeof\s+\w+\s*===")) score += 1; + if (System.Text.RegularExpressions.Regex.IsMatch(funcBody, @"\[\s*\d+\s*\]\s*=")) score += 1; + if (funcBody.Contains("null")) score += 1; + if (funcBody.Length > 500) score += 1; + + if (score >= 4) candidates.Add((funcName, score)); + } + + var best = candidates.OrderByDescending(c => c.Score).FirstOrDefault(); + if (best.Name is not null && best.Score >= 4) + { + var wrapper = FindWrapperFor(baseJs, best.Name); + return wrapper ?? best.Name; + } + return null; + } + + private static string? FindByNumericMarker(string baseJs) + { + string[] markers = ["-1552975130", "1673840063", "1630572004"]; + + foreach (var marker in markers) + { + int markerIdx = baseJs.IndexOf(marker, StringComparison.Ordinal); + if (markerIdx < 0) continue; + + var contextStart = Math.Max(0, markerIdx - 5000); + var context = baseJs.Substring(contextStart, markerIdx - contextStart); + + string? lastName = null; + foreach (System.Text.RegularExpressions.Match m in FunctionDefinitionRegex().Matches(context)) + lastName = m.Groups[1].Value; + + if (lastName is not null) + { + var wrapper = FindWrapperFor(baseJs, lastName); + return wrapper ?? lastName; + } + } + return null; + } + + private static string? FindContainingFunction(string js, int position) + { + var searchStart = Math.Max(0, position - 10000); + var context = js.Substring(searchStart, position - searchStart); + + string? lastName = null; + int lastPos = -1; + + foreach (System.Text.RegularExpressions.Match m in FunctionDefinitionRegex().Matches(context)) + { + if (m.Index > lastPos) + { + lastName = m.Groups[1].Value; + lastPos = m.Index; + } + } + return lastName; + } + + private static string? FindWrapperFor(string js, string targetFunc) + { + var patterns = new[] + { + $@"(\w+)\s*=\s*function\s*\(\s*(\w+)\s*\)\s*\{{\s*return\s+{System.Text.RegularExpressions.Regex.Escape(targetFunc)}\s*\[\s*\w+\s*\[\s*\d+\s*\]\s*\]\s*\(\s*this\s*,\s*\d+\s*,\s*\2\s*\)", + $@"(\w+)\s*=\s*function\s*\(\s*(\w+)\s*\)\s*\{{\s*return\s+{System.Text.RegularExpressions.Regex.Escape(targetFunc)}\s*\.\s*call\s*\(\s*this\s*,\s*\d+\s*,\s*\2\s*\)" + }; + + foreach (var pattern in patterns) + { + var match = System.Text.RegularExpressions.Regex.Match(js, pattern); + if (match.Success) + return match.Groups[1].Value; + } + return null; + } + + // ═══════════════════════════════════════════════════════════════ + // GENERATED REGEX + // ═══════════════════════════════════════════════════════════════ + + [System.Text.RegularExpressions.GeneratedRegex(@"(\w+)\[\d+\]\s*=\s*\1\s*;\s*\1\[\d+\]\s*=\s*\1\s*;\s*\1\[\d+\]\s*=\s*\1", System.Text.RegularExpressions.RegexOptions.Compiled)] + private static partial System.Text.RegularExpressions.Regex SelfReferencesRegex(); + + [System.Text.RegularExpressions.GeneratedRegex(@"(\w+)\s*=\s*function\s*\(\s*\w+\s*\)\s*\{\s*return\s+(\w+)\s*\[", System.Text.RegularExpressions.RegexOptions.Compiled)] + private static partial System.Text.RegularExpressions.Regex WrapperFunctionRegex(); + + [System.Text.RegularExpressions.GeneratedRegex(@"(\w+)\s*=\s*function\s*\([^)]*\)\s*\{(?:[^{}]|\{[^{}]*\}){200,}?(?:split|join)", System.Text.RegularExpressions.RegexOptions.Compiled | System.Text.RegularExpressions.RegexOptions.Singleline)] + private static partial System.Text.RegularExpressions.Regex FunctionWithSplitJoinRegex(); + + [System.Text.RegularExpressions.GeneratedRegex(@"(?:^|[;\n}])([a-zA-Z_$][\w$]*)\s*=\s*function\s*\(", System.Text.RegularExpressions.RegexOptions.Compiled)] + private static partial System.Text.RegularExpressions.Regex FunctionDefinitionRegex(); +} \ No newline at end of file diff --git a/Core/Youtube/Bridge/PlayerResponse.cs b/Core/Youtube/Bridge/PlayerResponse.cs index 651df83..92ec4be 100644 --- a/Core/Youtube/Bridge/PlayerResponse.cs +++ b/Core/Youtube/Bridge/PlayerResponse.cs @@ -2,6 +2,7 @@ using System.Text; using System.Text.Json; using System.Text.RegularExpressions; +using LMP.Core.Youtube.Exceptions; using LMP.Core.Youtube.Utils; using LMP.Core.Youtube.Utils.Extensions; @@ -16,6 +17,54 @@ internal partial class PlayerResponse(JsonElement content) public string? PlayabilityError => Playability?.GetPropertyOrNull("reason")?.GetStringOrNull(); + /// + /// Требуется ли авторизация для просмотра (LOGIN_REQUIRED). + /// + public bool IsLoginRequired => + string.Equals(PlayabilityStatus, "LOGIN_REQUIRED", StringComparison.OrdinalIgnoreCase); + + /// + /// Причина требования авторизации. + /// + public LoginRequiredReason LoginRequiredReason + { + get + { + if (!IsLoginRequired) + return LoginRequiredReason.Unknown; + + var reason = PlayabilityError ?? ""; + var desktopAgeGateReason = Playability + ?.GetPropertyOrNull("desktopLegacyAgeGateReason") + ?.GetInt32OrNull(); + + // desktopLegacyAgeGateReason: 1 = age restricted + if (desktopAgeGateReason == 1 || + reason.Contains("age", StringComparison.OrdinalIgnoreCase) || + reason.Contains("возраст", StringComparison.OrdinalIgnoreCase) || + reason.Contains("confirm your age", StringComparison.OrdinalIgnoreCase) || + reason.Contains("подтвердить возраст", StringComparison.OrdinalIgnoreCase)) + { + return LoginRequiredReason.AgeRestricted; + } + + if (reason.Contains("private", StringComparison.OrdinalIgnoreCase) || + reason.Contains("приватн", StringComparison.OrdinalIgnoreCase)) + { + return LoginRequiredReason.Private; + } + + if (reason.Contains("members", StringComparison.OrdinalIgnoreCase) || + reason.Contains("подписчик", StringComparison.OrdinalIgnoreCase) || + reason.Contains("member", StringComparison.OrdinalIgnoreCase)) + { + return LoginRequiredReason.MembersOnly; + } + + return LoginRequiredReason.Unknown; + } + } + public string? Category => content .GetPropertyOrNull("microformat") @@ -124,6 +173,28 @@ internal partial class PlayerResponse(JsonElement content) StreamingData?.GetPropertyOrNull("hlsManifestUrl")?.GetStringOrNull(); // Lazy enumerable to save allocations + // public IEnumerable Streams + // { + // get + // { + // var serverAbrUrl = ServerAbrStreamingUrl; + + // var formats = StreamingData?.GetPropertyOrNull("formats"); + // if (formats != null) + // { + // foreach (var j in formats.Value.EnumerateArrayOrEmpty()) + // yield return new StreamData(j, serverAbrUrl); + // } + + // var adaptiveFormats = StreamingData?.GetPropertyOrNull("adaptiveFormats"); + // if (adaptiveFormats != null) + // { + // foreach (var j in adaptiveFormats.Value.EnumerateArrayOrEmpty()) + // yield return new StreamData(j, serverAbrUrl); + // } + // } + // } + public IEnumerable Streams { get @@ -193,27 +264,41 @@ public class ClosedCaptionTrackData(JsonElement content) internal partial class PlayerResponse { - public class StreamData(JsonElement content) : IStreamData + public class StreamData : IStreamData { - public int? Itag => content.GetPropertyOrNull("itag")?.GetInt32OrNull(); + private readonly JsonElement _content; + + public StreamData(JsonElement content) + { + _content = content; + } + + public int? Itag => _content.GetPropertyOrNull("itag")?.GetInt32OrNull(); private IReadOnlyDictionary? CipherData => - content.GetPropertyOrNull("cipher")?.GetStringOrNull()?.Pipe(UrlEx.GetQueryParameters) - ?? content + _content.GetPropertyOrNull("cipher")?.GetStringOrNull()?.Pipe(UrlEx.GetQueryParameters) + ?? _content .GetPropertyOrNull("signatureCipher") ?.GetStringOrNull() ?.Pipe(UrlEx.GetQueryParameters); public string? Url => - content.GetPropertyOrNull("url")?.GetStringOrNull() - ?? CipherData?.GetValueOrDefault("url"); + _content.GetPropertyOrNull("url")?.GetStringOrNull() + ?? CipherData?.GetValueOrDefault("url").Pipe(u => + { + Console.WriteLine($"[CIPHER DEBUG] Found ciphered URL"); + Console.WriteLine($" URL: {u}"); + Console.WriteLine($" Signature: {CipherData?.GetValueOrDefault("s")}"); + Console.WriteLine($" SP: {CipherData?.GetValueOrDefault("sp")}"); + return u; + }); public string? Signature => CipherData?.GetValueOrDefault("s"); - public string? SignatureParameter => CipherData?.GetValueOrDefault("sp"); + // ContentLength тоже может отсутствовать — берём из JSON public long? ContentLength => - content + _content .GetPropertyOrNull("contentLength") ?.GetStringOrNull() ?.Pipe(s => @@ -229,35 +314,35 @@ public class StreamData(JsonElement content) : IStreamData : (long?)null ); - public long? Bitrate => content.GetPropertyOrNull("bitrate")?.GetInt64OrNull(); + public long? Bitrate => _content.GetPropertyOrNull("bitrate")?.GetInt64OrNull(); - private string? MimeType => content.GetPropertyOrNull("mimeType")?.GetStringOrNull(); - - public string? Container => MimeType?.SubstringUntil(";").SubstringAfter("/"); + public string? MimeType => _content.GetPropertyOrNull("mimeType")?.GetStringOrNull(); private bool IsAudioOnly => MimeType?.StartsWith("audio/", StringComparison.OrdinalIgnoreCase) ?? false; + public string? Container => MimeType?.SubstringUntil(";").SubstringAfter("/"); + public string? Codecs => MimeType?.SubstringAfter("codecs=\"").SubstringUntil("\""); public string? AudioCodec => IsAudioOnly ? Codecs : Codecs?.SubstringAfter(", ").NullIfWhiteSpace(); public string? AudioLanguageCode => - content + _content .GetPropertyOrNull("audioTrack") ?.GetPropertyOrNull("id") ?.GetStringOrNull() ?.SubstringUntil("."); public string? AudioLanguageName => - content + _content .GetPropertyOrNull("audioTrack") ?.GetPropertyOrNull("displayName") ?.GetStringOrNull(); public bool? IsAudioLanguageDefault => - content + _content .GetPropertyOrNull("audioTrack") ?.GetPropertyOrNull("audioIsDefault") ?.GetBooleanOrNull(); @@ -276,13 +361,11 @@ public string? VideoCodec } public string? VideoQualityLabel => - content.GetPropertyOrNull("qualityLabel")?.GetStringOrNull(); - - public int? VideoWidth => content.GetPropertyOrNull("width")?.GetInt32OrNull(); - - public int? VideoHeight => content.GetPropertyOrNull("height")?.GetInt32OrNull(); + _content.GetPropertyOrNull("qualityLabel")?.GetStringOrNull(); - public int? VideoFramerate => content.GetPropertyOrNull("fps")?.GetInt32OrNull(); + public int? VideoWidth => _content.GetPropertyOrNull("width")?.GetInt32OrNull(); + public int? VideoHeight => _content.GetPropertyOrNull("height")?.GetInt32OrNull(); + public int? VideoFramerate => _content.GetPropertyOrNull("fps")?.GetInt32OrNull(); } } diff --git a/Core/Youtube/Bridge/PlayerSource.cs b/Core/Youtube/Bridge/PlayerSource.cs index 574a357..069c018 100644 --- a/Core/Youtube/Bridge/PlayerSource.cs +++ b/Core/Youtube/Bridge/PlayerSource.cs @@ -1,136 +1,187 @@ -using System.Globalization; using System.Text.RegularExpressions; using LMP.Core.Youtube.Bridge.Cipher; -using LMP.Core.Youtube.Utils.Extensions; namespace LMP.Core.Youtube.Bridge; internal partial class PlayerSource(string content) { + /// + /// Кеш для скомпилированных Regex, используемых в GetMethodName. + /// Ключ - ключевое слово (keyword), значение - скомпилированный Regex. + /// + private static readonly Dictionary s_methodNameRegexCache = new(); + + /// + /// Кеш для скомпилированных Regex, используемых в ExtractCipherOperations. + /// Ключ - имя объекта (objName), значение - скомпилированный Regex. + /// + private static readonly Dictionary s_objDefRegexCache = new(); + + /// + /// Кеш для скомпилированных Regex, используемых в ExtractCipherOperations для поиска вызовов. + /// Ключ - имя объекта (objName), значение - скомпилированный Regex. + /// + private static readonly Dictionary s_opCallsRegexCache = new(); + /// + /// Legacy CipherManifest — извлекает SignatureTimestamp и (если получится) операции. + /// Сама дешифровка sig теперь идёт через SigCipherDecryptor. + /// public CipherManifest? CipherManifest { get { - // Extract the signature timestamp - var signatureTimestamp = MyRegex().Match(content) - .Groups[1] - .Value.NullIfWhiteSpace(); - - if (string.IsNullOrWhiteSpace(signatureTimestamp)) - return null; - - // Find where the player calls the cipher functions - var cipherCallsite = MyRegex1().Match(content) - .Groups[0] - .Value.NullIfWhiteSpace(); + try + { + // 1. SignatureTimestamp (sts) — нужен для fallback-запроса + var stsMatch = SignatureTimestampRegex().Match(content); + if (!stsMatch.Success) + { + Log.Debug("[PlayerSource] SignatureTimestamp not found"); + return null; + } - if (string.IsNullOrWhiteSpace(cipherCallsite)) - return null; + var signatureTimestamp = stsMatch.Groups[1].Value; - // Find the object that defines the cipher functions - var cipherContainerName = MyRegex2().Match(cipherCallsite) - .Groups[1] - .Value; + // 2. Пробуем извлечь операции (для обратной совместимости) + // Если не получится — не критично, SigCipherDecryptor справится + var operations = ExtractCipherOperations(); - if (string.IsNullOrWhiteSpace(cipherContainerName)) - return null; + if (operations is null || operations.Count == 0) + { + Log.Debug("[PlayerSource] Legacy cipher operations not found (expected with new YouTube format)"); + // Возвращаем манифест только с sts, без операций + return new CipherManifest(signatureTimestamp, []); + } - // Find the definition of the cipher functions - // Dynamic regex based on extracted container name - cannot use GeneratedRegex for the full pattern - var cipherDefinition = Regex - .Match( - content, - $$""" - var {{Regex.Escape(cipherContainerName)}}={.*?}; - """, - RegexOptions.Singleline - ) - .Groups[0] - .Value.NullIfWhiteSpace(); - - if (string.IsNullOrWhiteSpace(cipherDefinition)) + return new CipherManifest(signatureTimestamp, operations); + } + catch (Exception ex) + { + Log.Debug($"[PlayerSource] CipherManifest extraction failed: {ex.Message}"); return null; + } + } + } - // Identify the swap cipher function - var swapFuncName = MyRegex3().Match(cipherDefinition) - .Groups[1] - .Value.NullIfWhiteSpace(); + private List? ExtractCipherOperations() + { + // 1. Находим функцию расшифровки: a=a.split("") ... a.join("") + var decipherFuncBodyMatch = DeciphererFunctionRegex().Match(content); + if (!decipherFuncBodyMatch.Success) + { + Log.Debug("[PlayerSource] Decipher function definition not found"); + return null; + } - // Identify the splice cipher function - var spliceFuncName = SpliceFuncRegex().Match(cipherDefinition) - .Groups[1] - .Value.NullIfWhiteSpace(); + var decipherFuncBody = decipherFuncBodyMatch.Groups[2].Value; - // Identify the reverse cipher function - var reverseFuncName = ReverseFuncRegex().Match(cipherDefinition) - .Groups[1] - .Value.NullIfWhiteSpace(); + // 2. Находим имя объекта-манипулятора (например "AB" в "AB.xy(a,1)") + var operationCallMatch = OperationCallRegex().Match(decipherFuncBody); + if (!operationCallMatch.Success) + { + Log.Debug("[PlayerSource] No operation calls found in decipher function"); + return null; + } - var operations = new List(); - foreach (var statement in cipherCallsite.Split(';')) - { - var calledFuncName = CalledFuncRegex().Match(statement) - .Groups[1] - .Value; + var objName = operationCallMatch.Groups[1].Value; - if (string.IsNullOrWhiteSpace(calledFuncName)) - continue; + // 3. Находим определение объекта в JS: var AB={...}; + if (!s_objDefRegexCache.TryGetValue(objName, out var objDefRegex)) + { + objDefRegex = new Regex( + $@"var\s+{Regex.Escape(objName)}\s*=\s*\{{([\s\S]+?)\}};", + RegexOptions.Singleline | RegexOptions.Compiled); + s_objDefRegexCache[objName] = objDefRegex; + } - if (string.Equals(calledFuncName, swapFuncName, StringComparison.Ordinal)) - { - var index = IndexRegex().Match(statement) - .Groups[1] - .Value.Pipe(s => int.Parse(s, CultureInfo.InvariantCulture)); + var objDefMatch = objDefRegex.Match(content); + if (!objDefMatch.Success) + { + Log.Debug($"[PlayerSource] Definition for object '{objName}' not found"); + return null; + } - operations.Add(new SwapCipherOperation(index)); - } - else if (string.Equals(calledFuncName, spliceFuncName, StringComparison.Ordinal)) - { - var index = IndexRegex().Match(statement) - .Groups[1] - .Value.Pipe(s => int.Parse(s, CultureInfo.InvariantCulture)); + var objBody = objDefMatch.Groups[1].Value; - operations.Add(new SpliceCipherOperation(index)); - } - else if (string.Equals(calledFuncName, reverseFuncName, StringComparison.Ordinal)) - { - operations.Add(new ReverseCipherOperation()); - } - } + // 4. Определяем маппинг: имя метода → тип операции + var reverseMethod = GetMethodName(objBody, "reverse"); + var spliceMethod = GetMethodName(objBody, "splice"); + var swapMethod = GetMethodName(objBody, "var", "slice"); - return new CipherManifest(signatureTimestamp, operations); + if (string.IsNullOrEmpty(reverseMethod) && + string.IsNullOrEmpty(spliceMethod) && + string.IsNullOrEmpty(swapMethod)) + { + Log.Debug("[PlayerSource] Could not identify cipher methods mapping"); + return null; } - } - [GeneratedRegex(@"(?:signatureTimestamp|sts):(\d{5})")] - private static partial Regex MyRegex(); + Log.Debug($"[PlayerSource] Methods found - " + + $"Reverse: {reverseMethod}, Splice: {spliceMethod}, Swap: {swapMethod}"); - [GeneratedRegex(""" - [$_\w]+=function\([$_\w]+\){([$_\w]+)=\1\.split\(['"]{2}\);.*?return \1\.join\(['"]{2}\)} - """, RegexOptions.Singleline - )] - private static partial Regex MyRegex1(); + // 5. Парсим вызовы из тела функции и создаём операции + var operations = new List(); - [GeneratedRegex(@"([$_\w]+)\.[$_\w]+\([$_\w]+,\d+\);")] - private static partial Regex MyRegex2(); + if (!s_opCallsRegexCache.TryGetValue(objName, out var callsRegex)) + { + callsRegex = new Regex( + $@"{Regex.Escape(objName)}\.([a-zA-Z0-9_$]+)\(a,(\d+)\)", + RegexOptions.Compiled); + s_opCallsRegexCache[objName] = callsRegex; + } + var calls = callsRegex.Matches(decipherFuncBody); - [GeneratedRegex(@"([$_\w]+):function\([$_\w]+,[$_\w]+\){+[^}]*?%[^}]*?}", RegexOptions.Singleline - )] - private static partial Regex MyRegex3(); + foreach (Match call in calls) + { + var methodName = call.Groups[1].Value; + var param = int.Parse(call.Groups[2].Value); + + if (methodName == reverseMethod) + operations.Add(new ReverseCipherOperation()); + else if (methodName == swapMethod) + operations.Add(new SwapCipherOperation(param)); + else if (methodName == spliceMethod) + operations.Add(new SpliceCipherOperation(param)); + else + Log.Debug($"[PlayerSource] Unknown cipher operation: {methodName}"); + } - // New generated regexes replacing static Regex.Match + return operations; + } - [GeneratedRegex(@"([$_\w]+):function\([$_\w]+,[$_\w]+\){+[^}]*?splice[^}]*?}", RegexOptions.Singleline)] - private static partial Regex SpliceFuncRegex(); + private static string? GetMethodName(string objBody, params string[] keywords) + { + foreach (var keyword in keywords) + { + if (!s_methodNameRegexCache.TryGetValue(keyword, out var regex)) + { + regex = new Regex( + @"([a-zA-Z0-9_$]+)\s*:\s*function\b[^}]*" + Regex.Escape(keyword), + RegexOptions.Singleline | RegexOptions.Compiled); + s_methodNameRegexCache[keyword] = regex; + } + + var match = regex.Match(objBody); + if (match.Success) + return match.Groups[1].Value; + } + return null; + } - [GeneratedRegex(@"([$_\w]+):function\([$_\w]+\){+[^}]*?reverse[^}]*?}", RegexOptions.Singleline)] - private static partial Regex ReverseFuncRegex(); + [GeneratedRegex(@"(?:signatureTimestamp|sts)\s*[:=]\s*(\d+)")] + private static partial Regex SignatureTimestampRegex(); - [GeneratedRegex(@"[$_\w]+\.([$_\w]+)\([$_\w]+,\d+\)")] - private static partial Regex CalledFuncRegex(); + // Ищет: function_name = function(a) { a=a.split(""); ... return a.join("") } + [GeneratedRegex( + @"([a-zA-Z0-9_$]+)\s*=\s*function\([a-zA-Z0-9_$]+\)\s*\{\s*[a-zA-Z0-9_$]+\s*=\s*[a-zA-Z0-9_$]+\.split\(""""\);\s*([\s\S]+?)\s*;?\s*return\s*[a-zA-Z0-9_$]+\.join\(""""\)", + RegexOptions.Singleline)] + private static partial Regex DeciphererFunctionRegex(); - [GeneratedRegex(@"\([$_\w]+,(\d+)\)")] - private static partial Regex IndexRegex(); + // Ищет вызовы: OBJ.METHOD(a, 123) + [GeneratedRegex( + @"([a-zA-Z0-9_$]+)\.[a-zA-Z0-9_$]+\([a-zA-Z0-9_$]+,\d+\)", + RegexOptions.None)] + private static partial Regex OperationCallRegex(); } internal partial class PlayerSource diff --git a/Core/Youtube/Bridge/SearchResponse.cs b/Core/Youtube/Bridge/SearchResponse.cs index 5db667c..628942c 100644 --- a/Core/Youtube/Bridge/SearchResponse.cs +++ b/Core/Youtube/Bridge/SearchResponse.cs @@ -1,4 +1,5 @@ -using System.Collections.Frozen; +using System.Buffers; +using System.Collections.Frozen; using System.Globalization; using System.Runtime.CompilerServices; using System.Text; @@ -10,7 +11,6 @@ namespace LMP.Core.Youtube.Bridge; internal partial class SearchResponse { - // FrozenSet для O(1) проверки имён рендереров private static readonly FrozenSet ItemRendererNames = new[] { "musicResponsiveListItemRenderer", @@ -23,7 +23,6 @@ internal partial class SearchResponse "lockupViewModel" }.ToFrozenSet(StringComparer.Ordinal); - // FrozenSet для контейнеров (не нужно проверять каждый по отдельности) private static readonly FrozenSet ContainerNames = new[] { "contents", "items", "primaryContents", "secondaryContents", @@ -46,242 +45,284 @@ private SearchResponse(JsonElement content) var channels = new List(4); string? foundToken = null; - // Используем ref struct enumerator там где возможно, но здесь генератор - foreach (var item in CollectItemsFast(content)) - { - // Передаем токен по ссылке, чтобы извлечь его попутно - var result = ClassifyAndExtract(item, ref foundToken); - - switch (result.Type) - { - case ItemType.Video when result.Video is not null: - videos.Add(result.Video); - break; - case ItemType.Playlist when result.Playlist is not null: - playlists.Add(result.Playlist); - break; - case ItemType.Channel when result.Channel is not null: - channels.Add(result.Channel); - break; - } - } + // Используем ArrayPool для стека обхода + CollectAndClassify(content, videos, playlists, channels, ref foundToken); Videos = videos; Playlists = playlists; Channels = channels; - - // Если токен не найден при обходе, пробуем быстрый поиск ContinuationToken = foundToken ?? ExtractContinuationTokenFast(content); } /// - /// Классифицирует элемент за ОДИН проход по его свойствам + /// Объединённый обход + классификация в одном проходе. + /// Использует ArrayPool для стека вместо Stack{T} (меньше аллокаций). + /// + private static void CollectAndClassify( + JsonElement root, + List videos, + List playlists, + List channels, + ref string? token) + { + // Используем массив из пула вместо Stack + var stackBuffer = ArrayPool.Shared.Rent(128); + int stackTop = 0; + stackBuffer[stackTop++] = root; + + try + { + while (stackTop > 0) + { + var current = stackBuffer[--stackTop]; + + if (current.ValueKind == JsonValueKind.Array) + { + int len = current.GetArrayLength(); + + // Гарантируем достаточный размер стека + if (stackTop + len > stackBuffer.Length) + { + var newBuffer = ArrayPool.Shared.Rent(stackBuffer.Length * 2); + Array.Copy(stackBuffer, newBuffer, stackTop); + ArrayPool.Shared.Return(stackBuffer); + stackBuffer = newBuffer; + } + + // Пушим в обратном порядке для правильной последовательности + for (int i = len - 1; i >= 0; i--) + stackBuffer[stackTop++] = current[i]; + + continue; + } + + if (current.ValueKind != JsonValueKind.Object) + continue; + + // Проверяем, является ли это целевым элементом + bool isItem = false; + foreach (var prop in current.EnumerateObject()) + { + if (ItemRendererNames.Contains(prop.Name)) + { + if (prop.Name == "lockupViewModel") + { + if (prop.Value.TryGetProperty("contentId", out _)) + { + isItem = true; + break; + } + } + else + { + isItem = true; + break; + } + } + } + + if (isItem) + { + // Классифицируем и извлекаем inline + ClassifyAndExtract(current, videos, playlists, channels, ref token); + continue; + } + + // Добавляем дочерние контейнеры + foreach (var prop in current.EnumerateObject()) + { + if (ContainerNames.Contains(prop.Name)) + { + // Проверяем размер стека + if (stackTop >= stackBuffer.Length) + { + var newBuffer = ArrayPool.Shared.Rent(stackBuffer.Length * 2); + Array.Copy(stackBuffer, newBuffer, stackTop); + ArrayPool.Shared.Return(stackBuffer); + stackBuffer = newBuffer; + } + stackBuffer[stackTop++] = prop.Value; + } + } + } + } + finally + { + ArrayPool.Shared.Return(stackBuffer, clearArray: true); + } + } + + /// + /// Классифицирует элемент и сразу добавляет в нужный список — без промежуточного ClassificationResult. /// [MethodImpl(MethodImplOptions.AggressiveInlining)] - private static ClassificationResult ClassifyAndExtract(JsonElement item, ref string? token) + private static void ClassifyAndExtract( + JsonElement item, + List videos, + List playlists, + List channels, + ref string? token) { foreach (var prop in item.EnumerateObject()) { switch (prop.Name) { case "continuationItemRenderer": - token = prop.Value.GetPropertyOrNull("continuationEndpoint") + token ??= prop.Value.GetPropertyOrNull("continuationEndpoint") ?.GetPropertyOrNull("continuationCommand") ?.GetPropertyOrNull("token")?.GetStringOrNull(); - return default; + return; case "musicResponsiveListItemRenderer": - return ProcessMusicItem(prop.Value); + ProcessMusicItem(prop.Value, videos, playlists, channels); + return; case "videoRenderer": - var videoData = new VideoData(prop.Value, isYtm: false); - return string.IsNullOrEmpty(videoData.Id) - ? default - : new(ItemType.Video, videoData, null, null); - case "shortsLockupViewModel": case "reelItemRenderer": - var shortData = new VideoData(prop.Value, isYtm: false); - return string.IsNullOrEmpty(shortData.Id) - ? default - : new(ItemType.Video, shortData, null, null); + { + var videoData = new VideoData(prop.Value, isYtm: false); + if (!string.IsNullOrEmpty(videoData.Id)) + videos.Add(videoData); + return; + } case "lockupViewModel": + { var contentId = prop.Value.GetPropertyOrNull("contentId")?.GetStringOrNull(); if (!string.IsNullOrEmpty(contentId) && IsPlaylistId(contentId)) - return new(ItemType.Playlist, null, new PlaylistData(prop.Value), null); - return default; + playlists.Add(new PlaylistData(prop.Value)); + return; + } case "playlistRenderer": - return new(ItemType.Playlist, null, new PlaylistData(prop.Value), null); + playlists.Add(new PlaylistData(prop.Value)); + return; case "channelRenderer": - return new(ItemType.Channel, null, null, new ChannelData(prop.Value)); + channels.Add(new ChannelData(prop.Value)); + return; } } - return default; } [MethodImpl(MethodImplOptions.AggressiveInlining)] - private static bool IsPlaylistId(string id) => - id.StartsWith("PL", StringComparison.Ordinal) || - id.StartsWith("OL", StringComparison.Ordinal) || - id.StartsWith("RD", StringComparison.Ordinal); + private static bool IsPlaylistId(string id) + { + // Span-based проверка без аллокации + var span = id.AsSpan(); + return span.Length >= 2 && + (span.StartsWith("PL") || span.StartsWith("OL") || span.StartsWith("RD")); + } - private static ClassificationResult ProcessMusicItem(JsonElement musicItem) + private static void ProcessMusicItem( + JsonElement musicItem, + List videos, + List playlists, + List channels) { var data = new VideoData(musicItem, isYtm: true); if (data.IsPlaylistContext) - return new(ItemType.Playlist, null, new PlaylistData(musicItem, isYtm: true), null); + { + playlists.Add(new PlaylistData(musicItem, isYtm: true)); + return; + } if (data.IsArtistContext) - return new(ItemType.Channel, null, null, new ChannelData(musicItem, isYtm: true)); + { + channels.Add(new ChannelData(musicItem, isYtm: true)); + return; + } - return string.IsNullOrEmpty(data.Id) - ? default - : new(ItemType.Video, data, null, null); + if (!string.IsNullOrEmpty(data.Id)) + videos.Add(data); } /// - /// Оптимизированный сборщик элементов. - /// Инверсия порядка массива при добавлении в Stack, - /// чтобы результаты извлекались в правильном порядке. + /// Быстрый поиск токена с ArrayPool стеком и ранним выходом. /// - private static IEnumerable CollectItemsFast(JsonElement root) + private static string? ExtractContinuationTokenFast(JsonElement root) { - var stack = new Stack(64); - stack.Push(root); + var stackBuffer = ArrayPool.Shared.Rent(64); + int stackTop = 0; + stackBuffer[stackTop++] = root; - while (stack.Count > 0) + try { - var current = stack.Pop(); - - if (current.ValueKind == JsonValueKind.Array) + while (stackTop > 0) { - // ИСПРАВЛЕНИЕ #1: Инверсия поиска - // JsonElement.ArrayEnumerator идет от 0 к N. - // Если пушить в стек как есть, N выйдет первым (LIFO). - // Нам нужно пушить в обратном порядке: N, N-1... 0. - // Тогда 0 выйдет первым. - - int len = current.GetArrayLength(); - for (int i = len - 1; i >= 0; i--) - { - stack.Push(current[i]); - } - continue; - } + var current = stackBuffer[--stackTop]; - if (current.ValueKind != JsonValueKind.Object) - continue; - - // Оптимизация #2: Быстрая проверка на целевой элемент - bool isItem = false; - - // EnumerateObject не создает мусора (struct enumerator) - foreach (var prop in current.EnumerateObject()) - { - if (ItemRendererNames.Contains(prop.Name)) + if (current.ValueKind == JsonValueKind.Object) { - if (prop.Name == "lockupViewModel") + foreach (var prop in current.EnumerateObject()) { - bool hasLockupWithId = prop.Value.TryGetProperty("contentId", out _); - if (hasLockupWithId) { isItem = true; break; } - } - else - { - isItem = true; - break; + if (prop.Name == "continuationCommand") + { + var token = prop.Value.GetPropertyOrNull("token")?.GetStringOrNull(); + if (token != null) return token; + } + else if (prop.Name == "nextContinuationData") + { + var token = prop.Value.GetPropertyOrNull("continuation")?.GetStringOrNull(); + if (token != null) return token; + } + else if (prop.Value.ValueKind is JsonValueKind.Object or JsonValueKind.Array) + { + if (stackTop >= stackBuffer.Length) + { + var newBuffer = ArrayPool.Shared.Rent(stackBuffer.Length * 2); + Array.Copy(stackBuffer, newBuffer, stackTop); + ArrayPool.Shared.Return(stackBuffer); + stackBuffer = newBuffer; + } + stackBuffer[stackTop++] = prop.Value; + } } } - } - - if (isItem) - { - yield return current; - continue; // Не углубляемся внутрь найденного элемента (renderer) - } - - // Добавляем дочерние контейнеры - foreach (var prop in current.EnumerateObject()) - { - // Проверка по FrozenSet O(1) - if (ContainerNames.Contains(prop.Name)) + else if (current.ValueKind == JsonValueKind.Array) { - stack.Push(prop.Value); - } - } - } - } - - /// - /// Быстрый поиск токена с ранним выходом - /// - private static string? ExtractContinuationTokenFast(JsonElement root) - { - var stack = new Stack(32); - stack.Push(root); - - while (stack.Count > 0) - { - var current = stack.Pop(); - - if (current.ValueKind == JsonValueKind.Object) - { - foreach (var prop in current.EnumerateObject()) - { - if (prop.Name == "continuationCommand") - { - var token = prop.Value.GetPropertyOrNull("token")?.GetStringOrNull(); - if (token != null) return token; - } - else if (prop.Name == "nextContinuationData") - { - var token = prop.Value.GetPropertyOrNull("continuation")?.GetStringOrNull(); - if (token != null) return token; - } - else if (prop.Value.ValueKind is JsonValueKind.Object or JsonValueKind.Array) + int len = current.GetArrayLength(); + if (stackTop + len > stackBuffer.Length) { - stack.Push(prop.Value); + var newBuffer = ArrayPool.Shared.Rent(Math.Max(stackBuffer.Length * 2, stackTop + len)); + Array.Copy(stackBuffer, newBuffer, stackTop); + ArrayPool.Shared.Return(stackBuffer); + stackBuffer = newBuffer; } + for (int i = len - 1; i >= 0; i--) + stackBuffer[stackTop++] = current[i]; } } - else if (current.ValueKind == JsonValueKind.Array) - { - foreach (var item in current.EnumerateArray()) - stack.Push(item); - } } + finally + { + ArrayPool.Shared.Return(stackBuffer, clearArray: true); + } + return null; } public static SearchResponse Parse(string raw) => new(Json.Parse(raw)); - // Вспомогательные типы - private enum ItemType { None, Video, Playlist, Channel } - - private readonly record struct ClassificationResult( - ItemType Type, - VideoData? Video, - PlaylistData? Playlist, - ChannelData? Channel); + /// + /// Парсит из потока — избегает промежуточной строки. + /// + public static async ValueTask ParseAsync(Stream stream, CancellationToken ct = default) + { + var element = await Json.ParseAsync(stream, ct); + return new SearchResponse(element); + } // VideoData с кэшированием свойств при первом доступе internal sealed class VideoData(JsonElement content, bool isYtm) { - // Кэшированные значения - private string? _id; private bool _idComputed; - private string? _title; private bool _titleComputed; - private string? _author; private bool _authorComputed; - private string? _channelId; private bool _channelIdComputed; - private TimeSpan? _duration; private bool _durationComputed; - private IReadOnlyList? _thumbnails; private bool? _isPlaylistContext; private bool? _isArtistContext; @@ -291,10 +332,10 @@ public string? Id { get { - if (_idComputed) return _id; - _id = ComputeId(); + if (_idComputed) return field; + field = ComputeId(); _idComputed = true; - return _id; + return field; } } @@ -303,7 +344,6 @@ public string? Id { if (isYtm) { - // Проверяем наиболее вероятные пути первыми var vid = content.GetPropertyOrNull("playlistItemData") ?.GetPropertyOrNull("videoId")?.GetStringOrNull(); if (!string.IsNullOrEmpty(vid)) return vid; @@ -327,10 +367,10 @@ public string? Title { get { - if (_titleComputed) return _title; - _title = ComputeTitle(); + if (_titleComputed) return field; + field = ComputeTitle(); _titleComputed = true; - return _title; + return field; } } @@ -341,12 +381,11 @@ public string? Title var titleProp = content.GetPropertyOrNull("title"); if (titleProp.HasValue) { - var runs = titleProp.Value.GetPropertyOrNull("runs")?.EnumerateArrayOrNull(); - if (runs != null) - { - foreach (var run in runs) - return run.GetPropertyOrNull("text")?.GetStringOrNull(); - } + // Без LINQ: берём первый run вручную + var firstRun = titleProp.Value.GetPropertyOrNull("runs") + ?.GetFirstArrayElementOrNull(); + if (firstRun.HasValue) + return firstRun.Value.GetPropertyOrNull("text")?.GetStringOrNull(); return titleProp.Value.GetPropertyOrNull("simpleText")?.GetStringOrNull(); } @@ -360,10 +399,10 @@ public string? Author { get { - if (_authorComputed) return _author; - _author = ComputeAuthor(); + if (_authorComputed) return field; + field = ComputeAuthor(); _authorComputed = true; - return _author; + return field; } } @@ -371,10 +410,11 @@ public string? Author { if (isYtm) { - var runs = GetRuns(content, 1); - if (runs == null) return null; + var runsElement = GetRunsElement(content, 1); + if (runsElement == null) return null; - foreach (var run in runs) + // Первый проход: ищем артиста + foreach (var run in runsElement.Value.EnumerateArray()) { var pageType = run.GetPropertyOrNull("navigationEndpoint") ?.GetPropertyOrNull("browseEndpoint") @@ -386,27 +426,20 @@ public string? Author return run.GetPropertyOrNull("text")?.GetStringOrNull(); } - foreach (var run in runs) - return run.GetPropertyOrNull("text")?.GetStringOrNull(); - - return null; + // Второй проход: первый текст + var first = runsElement.Value.GetFirstArrayElementOrNull(); + return first?.GetPropertyOrNull("text")?.GetStringOrNull(); } - var ownerRuns = content.GetPropertyOrNull("ownerText") - ?.GetPropertyOrNull("runs")?.EnumerateArrayOrNull(); - if (ownerRuns != null) - { - foreach (var run in ownerRuns) - return run.GetPropertyOrNull("text")?.GetStringOrNull(); - } + var ownerFirstRun = content.GetPropertyOrNull("ownerText") + ?.GetPropertyOrNull("runs")?.GetFirstArrayElementOrNull(); + if (ownerFirstRun.HasValue) + return ownerFirstRun.Value.GetPropertyOrNull("text")?.GetStringOrNull(); - var bylineRuns = content.GetPropertyOrNull("shortBylineText") - ?.GetPropertyOrNull("runs")?.EnumerateArrayOrNull(); - if (bylineRuns != null) - { - foreach (var run in bylineRuns) - return run.GetPropertyOrNull("text")?.GetStringOrNull(); - } + var bylineFirstRun = content.GetPropertyOrNull("shortBylineText") + ?.GetPropertyOrNull("runs")?.GetFirstArrayElementOrNull(); + if (bylineFirstRun.HasValue) + return bylineFirstRun.Value.GetPropertyOrNull("text")?.GetStringOrNull(); return null; } @@ -415,10 +448,10 @@ public string? ChannelId { get { - if (_channelIdComputed) return _channelId; - _channelId = ComputeChannelId(); + if (_channelIdComputed) return field; + field = ComputeChannelId(); _channelIdComputed = true; - return _channelId; + return field; } } @@ -426,28 +459,26 @@ public string? ChannelId { if (isYtm) { - var runs = GetRuns(content, 1); - if (runs != null) + var runsElement = GetRunsElement(content, 1); + if (runsElement == null) return null; + + foreach (var run in runsElement.Value.EnumerateArray()) { - foreach (var run in runs) - { - var id = run.GetPropertyOrNull("navigationEndpoint") - ?.GetPropertyOrNull("browseEndpoint") - ?.GetPropertyOrNull("browseId")?.GetStringOrNull(); + var id = run.GetPropertyOrNull("navigationEndpoint") + ?.GetPropertyOrNull("browseEndpoint") + ?.GetPropertyOrNull("browseId")?.GetStringOrNull(); - if (id != null && id.StartsWith("UC", StringComparison.Ordinal)) - return id; - } + if (id != null && id.AsSpan().StartsWith("UC")) + return id; } return null; } - // Ищем browseId только в известных местах, а не через EnumerateDescendantProperties - var browsePath = content.GetPropertyOrNull("ownerText") - ?.GetPropertyOrNull("runs")?.EnumerateArrayOrNull(); - if (browsePath != null) + var ownerRuns = content.GetPropertyOrNull("ownerText") + ?.GetPropertyOrNull("runs"); + if (ownerRuns.HasValue) { - foreach (var run in browsePath) + foreach (var run in ownerRuns.Value.EnumerateArrayOrEmpty()) { var id = run.GetPropertyOrNull("navigationEndpoint") ?.GetPropertyOrNull("browseEndpoint") @@ -469,17 +500,15 @@ public bool IsOfficialArtist { if (isYtm) return true; - // Быстрая проверка без полного обхода - var badges = content.GetPropertyOrNull("ownerBadges")?.EnumerateArrayOrNull(); - if (badges != null) + var badges = content.GetPropertyOrNull("ownerBadges"); + if (badges == null) return false; + + foreach (var badge in badges.Value.EnumerateArrayOrEmpty()) { - foreach (var badge in badges) - { - var iconType = badge.GetPropertyOrNull("metadataBadgeRenderer") - ?.GetPropertyOrNull("icon") - ?.GetPropertyOrNull("iconType")?.GetStringOrNull(); - if (iconType == "AUDIO_BADGE") return true; - } + var iconType = badge.GetPropertyOrNull("metadataBadgeRenderer") + ?.GetPropertyOrNull("icon") + ?.GetPropertyOrNull("iconType")?.GetStringOrNull(); + if (iconType == "AUDIO_BADGE") return true; } return false; } @@ -493,10 +522,10 @@ public TimeSpan? Duration { get { - if (_durationComputed) return _duration; - _duration = ComputeDuration(); + if (_durationComputed) return field; + field = ComputeDuration(); _durationComputed = true; - return _duration; + return field; } } @@ -504,16 +533,15 @@ public TimeSpan? Duration { if (isYtm) { - var runs = GetRuns(content, 1); - if (runs != null) + var runsElement = GetRunsElement(content, 1); + if (runsElement == null) return null; + + foreach (var run in runsElement.Value.EnumerateArray()) { - foreach (var run in runs) + var text = run.GetPropertyOrNull("text")?.GetStringOrNull(); + if (text != null && text.Contains(':') && !text.Contains('•')) { - var text = run.GetPropertyOrNull("text")?.GetStringOrNull(); - if (text != null && text.Contains(':') && !text.Contains('•')) - { - if (TryParseDuration(text, out var ts)) return ts; - } + if (TryParseDuration(text, out var ts)) return ts; } } return null; @@ -529,36 +557,33 @@ public IReadOnlyList Thumbnails { get { - if (_thumbnails != null) return _thumbnails; - _thumbnails = ComputeThumbnails(); - return _thumbnails; + if (field != null) return field; + field = ComputeThumbnails(); + return field; } } private IReadOnlyList ComputeThumbnails() { - var thumbs = content.GetPropertyOrNull("thumbnail") + var thumbsElement = content.GetPropertyOrNull("thumbnail") ?.GetPropertyOrNull("musicThumbnailRenderer") ?.GetPropertyOrNull("thumbnail") - ?.GetPropertyOrNull("thumbnails")?.EnumerateArrayOrNull(); + ?.GetPropertyOrNull("thumbnails"); - if (thumbs == null) - { - thumbs = content.GetPropertyOrNull("thumbnail") - ?.GetPropertyOrNull("thumbnails")?.EnumerateArrayOrNull(); - } + thumbsElement ??= content.GetPropertyOrNull("thumbnail") + ?.GetPropertyOrNull("thumbnails"); - if (thumbs == null) - { - thumbs = content.GetPropertyOrNull("thumbnailViewModel") - ?.GetPropertyOrNull("image") - ?.GetPropertyOrNull("sources")?.EnumerateArrayOrNull(); - } + thumbsElement ??= content.GetPropertyOrNull("thumbnailViewModel") + ?.GetPropertyOrNull("image") + ?.GetPropertyOrNull("sources"); + + if (thumbsElement == null) return []; - if (thumbs == null) return Array.Empty(); + var len = thumbsElement.Value.GetArrayLength(); + if (len == 0) return []; - var list = new List(4); - foreach (var t in thumbs) + var list = new List(len); + foreach (var t in thumbsElement.Value.EnumerateArray()) list.Add(new ThumbnailData(t)); return list; } @@ -609,57 +634,64 @@ private bool ComputeIsArtistContext() return pageType == "MUSIC_PAGE_TYPE_ARTIST"; } - private static IEnumerable? GetRuns(JsonElement item, int columnIndex) + /// + /// Возвращает JsonElement массива runs вместо IEnumerable — без аллокации. + /// + private static JsonElement? GetRunsElement(JsonElement item, int columnIndex) { - var cols = item.GetPropertyOrNull("flexColumns")?.EnumerateArrayOrNull(); + var cols = item.GetPropertyOrNull("flexColumns"); if (cols == null) return null; - int idx = 0; - foreach (var col in cols) - { - if (idx == columnIndex) - { - return col.GetPropertyOrNull("musicResponsiveListItemFlexColumnRenderer") - ?.GetPropertyOrNull("text") - ?.GetPropertyOrNull("runs")?.EnumerateArrayOrNull(); - } - idx++; - } - return null; + var col = cols.Value.GetArrayElementOrNull(columnIndex); + if (col == null) return null; + + return col.Value.GetPropertyOrNull("musicResponsiveListItemFlexColumnRenderer") + ?.GetPropertyOrNull("text") + ?.GetPropertyOrNull("runs"); } + /// + /// Собирает текст всех runs без лишних аллокаций. + /// public static string? GetRunText(JsonElement item, int columnIndex) { - var runs = GetRuns(item, columnIndex); - if (runs == null) return null; + var runsElement = GetRunsElement(item, columnIndex); + if (runsElement == null) return null; + var runs = runsElement.Value; + var len = runs.GetArrayLength(); + if (len == 0) return null; + + // Быстрый путь: один run + if (len == 1) + return runs[0].GetPropertyOrNull("text")?.GetStringOrNull(); + + // Несколько runs: используем StringBuilder StringBuilder? sb = null; - string? single = null; - int count = 0; + string? first = null; - foreach (var run in runs) + for (int i = 0; i < len; i++) { - var text = run.GetPropertyOrNull("text")?.GetStringOrNull(); + var text = runs[i].GetPropertyOrNull("text")?.GetStringOrNull(); if (text == null) continue; - if (count == 0) + if (first == null) { - single = text; + first = text; } else { - sb ??= new StringBuilder(single); + sb ??= new StringBuilder(first.Length + text.Length * (len - 1)); + if (sb.Length == 0) sb.Append(first); sb.Append(text); } - count++; } - return sb?.ToString() ?? single; + return sb?.ToString() ?? first; } - // Кэшированные форматы для парсинга private static readonly string[] DurationFormats = - { @"m\:ss", @"mm\:ss", @"h\:mm\:ss", @"hh\:mm\:ss" }; + [@"m\:ss", @"mm\:ss", @"h\:mm\:ss", @"hh\:mm\:ss"]; [MethodImpl(MethodImplOptions.AggressiveInlining)] private static bool TryParseDuration(string text, out TimeSpan timeSpan) => @@ -684,39 +716,63 @@ public PlaylistData(JsonElement content, bool isYtm = false) ?.GetPropertyOrNull("browseEndpoint") ?.GetPropertyOrNull("browseId")?.GetStringOrNull() : null); - public string? Title => - _content.GetPropertyOrNull("title")?.GetPropertyOrNull("simpleText")?.GetStringOrNull() ?? - _content.GetPropertyOrNull("title")?.GetPropertyOrNull("runs")?.EnumerateArrayOrNull() - ?.FirstOrDefault().GetPropertyOrNull("text")?.GetStringOrNull() ?? - _content.GetPropertyOrNull("metadata")?.GetPropertyOrNull("lockupMetadataViewModel") - ?.GetPropertyOrNull("title")?.GetPropertyOrNull("content")?.GetStringOrNull() ?? - (_isYtm ? VideoData.GetRunText(_content, 0) : null); + public string? Title + { + get + { + var titleProp = _content.GetPropertyOrNull("title"); + if (titleProp.HasValue) + { + var simple = titleProp.Value.GetPropertyOrNull("simpleText")?.GetStringOrNull(); + if (simple != null) return simple; + + var firstRun = titleProp.Value.GetPropertyOrNull("runs")?.GetFirstArrayElementOrNull(); + if (firstRun.HasValue) + return firstRun.Value.GetPropertyOrNull("text")?.GetStringOrNull(); + } - public string? Author => - _content.GetPropertyOrNull("shortBylineText")?.GetPropertyOrNull("runs") - ?.EnumerateArrayOrNull()?.FirstOrDefault() - .GetPropertyOrNull("text")?.GetStringOrNull() ?? - (_isYtm ? VideoData.GetRunText(_content, 1) : null); + var lockupTitle = _content.GetPropertyOrNull("metadata") + ?.GetPropertyOrNull("lockupMetadataViewModel") + ?.GetPropertyOrNull("title") + ?.GetPropertyOrNull("content")?.GetStringOrNull(); + if (lockupTitle != null) return lockupTitle; + + return _isYtm ? VideoData.GetRunText(_content, 0) : null; + } + } + + public string? Author + { + get + { + var firstRun = _content.GetPropertyOrNull("shortBylineText") + ?.GetPropertyOrNull("runs")?.GetFirstArrayElementOrNull(); + if (firstRun.HasValue) + return firstRun.Value.GetPropertyOrNull("text")?.GetStringOrNull(); + + return _isYtm ? VideoData.GetRunText(_content, 1) : null; + } + } public IReadOnlyList Thumbnails { get { - var thumbs = _content.GetPropertyOrNull("thumbnail") - ?.GetPropertyOrNull("thumbnails")?.EnumerateArrayOrNull(); + var thumbsElement = _content.GetPropertyOrNull("thumbnail") + ?.GetPropertyOrNull("thumbnails"); - if (thumbs == null) - { - thumbs = _content.GetPropertyOrNull("thumbnail") - ?.GetPropertyOrNull("musicThumbnailRenderer") - ?.GetPropertyOrNull("thumbnail") - ?.GetPropertyOrNull("thumbnails")?.EnumerateArrayOrNull(); - } + thumbsElement ??= _content.GetPropertyOrNull("thumbnail") + ?.GetPropertyOrNull("musicThumbnailRenderer") + ?.GetPropertyOrNull("thumbnail") + ?.GetPropertyOrNull("thumbnails"); + + if (thumbsElement == null) return []; - if (thumbs == null) return Array.Empty(); + var len = thumbsElement.Value.GetArrayLength(); + if (len == 0) return []; - var list = new List(4); - foreach (var t in thumbs) + var list = new List(len); + foreach (var t in thumbsElement.Value.EnumerateArray()) list.Add(new ThumbnailData(t)); return list; } @@ -748,21 +804,21 @@ public IReadOnlyList Thumbnails { get { - var thumbs = _content.GetPropertyOrNull("thumbnail") - ?.GetPropertyOrNull("thumbnails")?.EnumerateArrayOrNull(); + var thumbsElement = _content.GetPropertyOrNull("thumbnail") + ?.GetPropertyOrNull("thumbnails"); - if (thumbs == null) - { - thumbs = _content.GetPropertyOrNull("thumbnail") - ?.GetPropertyOrNull("musicThumbnailRenderer") - ?.GetPropertyOrNull("thumbnail") - ?.GetPropertyOrNull("thumbnails")?.EnumerateArrayOrNull(); - } + thumbsElement ??= _content.GetPropertyOrNull("thumbnail") + ?.GetPropertyOrNull("musicThumbnailRenderer") + ?.GetPropertyOrNull("thumbnail") + ?.GetPropertyOrNull("thumbnails"); + + if (thumbsElement == null) return []; - if (thumbs == null) return Array.Empty(); + var len = thumbsElement.Value.GetArrayLength(); + if (len == 0) return []; - var list = new List(4); - foreach (var t in thumbs) + var list = new List(len); + foreach (var t in thumbsElement.Value.EnumerateArray()) list.Add(new ThumbnailData(t)); return list; } diff --git a/Core/Youtube/Bridge/SigCipher/SigCipherDecryptor.cs b/Core/Youtube/Bridge/SigCipher/SigCipherDecryptor.cs new file mode 100644 index 0000000..8677e2a --- /dev/null +++ b/Core/Youtube/Bridge/SigCipher/SigCipherDecryptor.cs @@ -0,0 +1,351 @@ +using System.Diagnostics; +using Jint; +using LMP.Core.Youtube.Bridge.Common; + +namespace LMP.Core.Youtube.Bridge.SigCipher; + +public sealed partial class SigCipherDecryptor(PlayerContextManager playerManager) : JsDecryptorBase(playerManager, G.FilePath.SigCipherCache, 500, 100) +{ + private SigCipherManifest? _manifest; + private string? _manifestCachePath; + + public async ValueTask DecipherAsync(string signature, CancellationToken ct = default) + { + if (string.IsNullOrWhiteSpace(signature)) return signature; + if (Cache.TryGet(signature, out var cached)) return cached; + + await EnsureInitializedAsync(ct); + + // Tier 1: Manifest (native C#, zero JS) + if (_manifest is not null) + { + try + { + var result = _manifest.Decipher(signature); + Cache.Set(signature, result); + Log.Debug($"[SigCipher] Manifest: {Truncate(signature)} -> {Truncate(result)}"); + return result; + } + catch (Exception ex) + { + Log.Warn($"[SigCipher] Manifest failed: {ex.Message}"); + } + } + + // Tier 2+3: JS (bundle → full) + var jsResult = TryInvokeJs(signature, "Decipher"); + if (jsResult is not null) + { + TrySolveInBackground(signature, jsResult); + return jsResult; + } + + return signature; + } + + protected override void InitializeCore(PlayerContext context) + { + Log.Info("[SigCipher] Initializing..."); + var sw = Stopwatch.StartNew(); + + _manifestCachePath = Path.Combine(DiagFolder, $"manifest_{context.Version}.txt"); + + // Stage 1: Cached manifest + _manifest = TryLoadCachedManifest(context.Version); + if (_manifest is not null) + { + sw.Stop(); + Log.Info($"[SigCipher] Cached manifest loaded in {sw.ElapsedMilliseconds}ms: {_manifest}"); + return; + } + + // ═══ Find function name early — needed by multiple stages ═══ + var funcName = SigCipherExtractor.FindDecipherFunctionName(context.BaseJs); + + // Stage 2: Extract manifest (parse JS, no execution) + _manifest = SigCipherExtractor.ExtractManifest(context.BaseJs, context.Version); + if (_manifest is not null) + { + SaveManifest(_manifest); + + // Save diagnostic bundle even though we don't need JS engine + if (funcName is not null) + SaveDiagBundle(context.BaseJs, funcName); + + sw.Stop(); + Log.Info($"[SigCipher] Extracted manifest in {sw.ElapsedMilliseconds}ms: {_manifest}"); + return; + } + + Log.Debug("[SigCipher] Extractor failed, trying Solver..."); + + // Stage 3: Solver (get one sample from JS, then discard JS) + if (TryInitWithSolver(context, funcName)) + { + sw.Stop(); + Log.Info($"[SigCipher] Solver manifest ready in {sw.ElapsedMilliseconds}ms: {_manifest}"); + return; + } + + // Stage 4: Persistent JS engines + if (funcName is not null) + { + var callNumber = FindCallNumber(context.BaseJs, funcName); + TryInitJsEngines( + context, + funcName, + fn => BuildSigWrapperScript(fn, callNumber), + BuildTestSignature(), + BuildSigBundle); + } + + sw.Stop(); + Log.Info($"[SigCipher] Initialized in {sw.ElapsedMilliseconds}ms"); + } + + /// + /// Saves diagnostic bundle for analysis even when manifest extraction succeeded. + /// + private void SaveDiagBundle(string baseJs, string funcName) + { + try + { + var bundle = BuildSigBundle(baseJs, funcName); + if (bundle is not null) + SaveDiagScript("bundle", bundle, funcName); + } + catch (Exception ex) + { + Log.Debug($"[SigCipher] Diag bundle save failed: {ex.Message}"); + } + } + + // ═══════════════════════════════════════════════════════════════ + // WRAPPER SCRIPT & BUNDLE + // ═══════════════════════════════════════════════════════════════ + + private static string BuildSigWrapperScript(string funcName, int? callNumber) => $$""" + function __decryptorTransform(s) { + try { + var f = window['{{funcName}}']; + if (typeof f !== 'function') return s; + var r; + {{(callNumber.HasValue + ? $"r = f({callNumber.Value}, s);" + : """ + var nums = [4, 26, 2, 8, 14]; + for (var i = 0; i < nums.length; i++) { + try { + r = f(nums[i], s); + if (typeof r === 'string' && r !== s && r.length > 0) break; + r = null; + } catch(e2) { r = null; } + } + if (!r) { + try { r = f(s); } catch(e3) { r = null; } + } + """)}} + return (typeof r === 'string' && r !== s && r.length > 0) ? r : s; + } catch(e) { return s; } + } + """; + + private static int? FindCallNumber(string baseJs, string funcName) + { + var span = baseJs.AsSpan(); + var target = string.Concat(funcName, "("); + var targetSpan = target.AsSpan(); + + int searchFrom = 0; + while (searchFrom < span.Length) + { + int idx = span[searchFrom..].IndexOf(targetSpan, StringComparison.Ordinal); + if (idx < 0) break; + idx += searchFrom; + searchFrom = idx + targetSpan.Length; + + if (idx > 0 && (char.IsLetterOrDigit(span[idx - 1]) || span[idx - 1] is '_' or '$')) + continue; + + int pos = idx + targetSpan.Length; + while (pos < span.Length && span[pos] is ' ' or '\t') pos++; + + int numStart = pos; + while (pos < span.Length && char.IsAsciiDigit(span[pos])) pos++; + if (pos == numStart) continue; + + int afterNum = pos; + while (afterNum < span.Length && span[afterNum] is ' ' or '\t') afterNum++; + if (afterNum >= span.Length || span[afterNum] != ',') continue; + + if (int.TryParse(span.Slice(numStart, pos - numStart), out int num)) + { + Log.Debug($"[SigCipher] Found call number {num} for '{funcName}'"); + return num; + } + } + + return null; + } + + private string? BuildSigBundle(string baseJs, string funcName) => + BuildDefaultBundle(baseJs, funcName); + + private static string BuildTestSignature() => + "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz" + + "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnop" + + "qrstu"; + + // ═══════════════════════════════════════════════════════════════ + // MANIFEST + // ═══════════════════════════════════════════════════════════════ + + private SigCipherManifest? TryLoadCachedManifest(string playerVersion) + { + try + { + if (_manifestCachePath is null || !File.Exists(_manifestCachePath)) + return null; + + var data = File.ReadAllText(_manifestCachePath); + var manifest = SigCipherManifest.Deserialize(data); + + if (manifest?.PlayerVersion != playerVersion) + { + File.Delete(_manifestCachePath); + return null; + } + + return manifest; + } + catch { return null; } + } + + private void SaveManifest(SigCipherManifest manifest) + { + try + { + if (_manifestCachePath is null) return; + Directory.CreateDirectory(Path.GetDirectoryName(_manifestCachePath)!); + File.WriteAllText(_manifestCachePath, manifest.Serialize()); + } + catch (Exception ex) + { + Log.Debug($"[SigCipher] Manifest save failed: {ex.Message}"); + } + } + + // ═══════════════════════════════════════════════════════════════ + // SOLVER + // ═══════════════════════════════════════════════════════════════ + + private bool TryInitWithSolver(PlayerContext context, string? funcName) + { + if (funcName is null) return false; + + var callNumber = FindCallNumber(context.BaseJs, funcName); + var testSig = BuildTestSignature(); + string? decrypted = null; + + // Попытка через bundle + var bundle = BuildSigBundle(context.BaseJs, funcName); + if (bundle is not null) + { + decrypted = TryRunOnce(bundle, funcName, testSig, callNumber); + if (decrypted is not null) + SaveDiagScript("solver_bundle", bundle, funcName); + } + + // Попытка через full JS + if (decrypted is null) + { + var modifiedJs = InjectWindowExport(context.BaseJs, funcName); + decrypted = TryRunOnce(modifiedJs, funcName, testSig, callNumber); + } + + if (decrypted is null) return false; + + var ops = SigCipherSolver.Solve(testSig, decrypted); + if (ops is null || ops.Count < 3) return false; + + _manifest = new SigCipherManifest(context.Version, ops, "solver"); + SaveManifest(_manifest); + return true; + } + + private static string? TryRunOnce(string jsCode, string funcName, string testInput, int? callNumber) + { + Engine? engine = null; + try + { + engine = new Engine(opt => opt + .TimeoutInterval(TimeSpan.FromSeconds(10)) + .LimitRecursion(100) + .MaxStatements(1_000_000)); + + engine.Execute(BrowserStubs); + engine.Execute(jsCode); + + var wrapperScript = BuildSigWrapperScript(funcName, callNumber); + engine.Execute(wrapperScript); + + var result = engine.Invoke("__decryptorTransform", testInput).AsString(); + return !string.IsNullOrEmpty(result) && result != testInput ? result : null; + } + catch (Exception ex) + { + Log.Debug($"[SigCipher] TryRunOnce failed: {ex.Message}"); + return null; + } + finally + { + engine?.Dispose(); + } + } + + private void TrySolveInBackground(string encrypted, string decrypted) + { + if (_manifest is not null || CurrentPlayerVersion is null) return; + + Task.Run(() => + { + try + { + var ops = SigCipherSolver.Solve(encrypted, decrypted); + if (ops is null || ops.Count < 3) return; + + var manifest = new SigCipherManifest(CurrentPlayerVersion, ops, "background_solver"); + + int verified = 0, total = 0; + foreach (var sig in Cache.Keys.Take(5)) + { + if (Cache.TryGet(sig, out var expected)) + { + total++; + if (manifest.Decipher(sig) == expected) verified++; + } + } + + if (verified >= 3 || (total > 0 && verified == total)) + { + _manifest = manifest; + SaveManifest(manifest); + + BundleEngine?.Dispose(); + BundleEngine = null; + FullEngine?.Dispose(); + FullEngine = null; + + Log.Info($"[SigCipher] Background solver succeeded: {manifest}"); + } + } + catch { /* ignore */ } + }); + } + + public override void Dispose() + { + _manifest = null; + base.Dispose(); + } +} \ No newline at end of file diff --git a/Core/Youtube/Bridge/SigCipher/SigCipherExtractor.cs b/Core/Youtube/Bridge/SigCipher/SigCipherExtractor.cs new file mode 100644 index 0000000..755ecca --- /dev/null +++ b/Core/Youtube/Bridge/SigCipher/SigCipherExtractor.cs @@ -0,0 +1,674 @@ +using System.Runtime.CompilerServices; +using System.Text.RegularExpressions; +using LMP.Core.Youtube.Bridge.Common; + +namespace LMP.Core.Youtube.Bridge.SigCipher; + +internal static partial class SigCipherExtractor +{ + public static SigCipherManifest? ExtractManifest(string baseJs, string playerVersion) + { + try + { + var sw = System.Diagnostics.Stopwatch.StartNew(); + + var funcName = FindDecipherFunctionName(baseJs); + if (funcName is null) return null; + + var decipherFunc = JsFunctionExtractor.FindFunctionByName(baseJs, funcName); + if (decipherFunc is null) return null; + + Log.Debug($"[SigCipher] Found decipher function '{funcName}', length: {decipherFunc.Value.Code.Length}"); + + // ═══ Resolve dictionary references ═══ + // Detect dict name (e.g., "q") and resolve all q[N] → actual values + string funcCode = decipherFunc.Value.Code; + string? dictArrayName = null; + string[]? dictElements = null; + + var detectedDictName = JsDictResolver.DetectDictName(funcCode); + if (detectedDictName is not null) + { + dictElements = JsFunctionExtractor.ExtractArrayElements(baseJs, detectedDictName); + if (dictElements is not null && dictElements.Length >= 10) + { + dictArrayName = detectedDictName; + funcCode = JsDictResolver.Resolve(funcCode, detectedDictName, dictElements); + Log.Debug($"[SigCipher] Resolved dict '{detectedDictName}' ({dictElements.Length} elements) in decipher func"); + } + } + + // Fallback: original dict detection + if (dictArrayName is null) + { + dictArrayName = JsFunctionExtractor.DetectDictArrayName(funcCode); + if (dictArrayName is not null) + { + dictElements = JsFunctionExtractor.ExtractArrayElements(baseJs, dictArrayName); + if (dictElements is not null) + Log.Debug($"[SigCipher] Dict array '{dictArrayName}': {dictElements.Length} elements"); + } + } + + // ═══ Find cipher object ═══ + var cipherObjName = FindCipherObjectNameFromCode(funcCode, dictArrayName); + if (cipherObjName is null) + { + Log.Warn("[SigCipher] Could not find cipher object name"); + return null; + } + + var cipherObjCode = JsFunctionExtractor.FindAnyDefinition(baseJs, cipherObjName); + if (cipherObjCode is null) + { + Log.Warn($"[SigCipher] Could not find cipher object '{cipherObjName}' definition"); + return null; + } + + Log.Debug($"[SigCipher] Found cipher object '{cipherObjName}'"); + + // ═══ Resolve dict in cipher object too ═══ + string resolvedCipherCode = cipherObjCode; + if (dictElements is not null && detectedDictName is not null) + { + resolvedCipherCode = JsDictResolver.Resolve(cipherObjCode, detectedDictName, dictElements); + Log.Debug($"[SigCipher] Resolved dict in cipher object '{cipherObjName}'"); + } + + // ═══ Parse methods from resolved cipher object ═══ + var methodMap = ParseCipherMethods(resolvedCipherCode, dictElements); + + if (methodMap.Count == 0) + { + Log.Warn("[SigCipher] No cipher methods parsed"); + return null; + } + + // ═══ Extract operations from resolved decipher function ═══ + var operations = ExtractOperations( + funcCode, cipherObjName, + methodMap, dictElements, dictArrayName); + + if (operations is null || operations.Count < 3) + { + Log.Warn($"[SigCipher] Too few operations: {operations?.Count ?? 0}"); + return null; + } + + sw.Stop(); + var manifest = new SigCipherManifest(playerVersion, operations, "extracted"); + Log.Info($"[SigCipher] Extracted manifest in {sw.ElapsedMilliseconds}ms: {manifest}"); + + return manifest; + } + catch (Exception ex) + { + Log.Error($"[SigCipher] Extraction failed: {ex.Message}"); + return null; + } + } + + // ═══════════════════════════════════════════════════════════════ + // FIND DECIPHER FUNCTION NAME — multi-strategy + // ═══════════════════════════════════════════════════════════════ + + public static string? FindDecipherFunctionName(string baseJs) + { + // Strategy 1: = funcName(N, decodeURIComponent(...) — any number + var result = FindByDecodeURIComponentWithNumber(baseJs); + if (result is not null) + { + Log.Debug($"[SigCipher] Found decipher func '{result}' via Strategy 1 (number+decodeURI)"); + return result; + } + + // Strategy 2: = funcName(decodeURIComponent(...) — no number prefix + result = FindByDecodeURIComponentDirect(baseJs); + if (result is not null) + { + Log.Debug($"[SigCipher] Found decipher func '{result}' via Strategy 2 (direct decodeURI)"); + return result; + } + + // Strategy 3: Regex-based patterns + result = FindByRegexPatterns(baseJs); + if (result is not null) + { + Log.Debug($"[SigCipher] Found decipher func '{result}' via Strategy 3 (regex)"); + return result; + } + + Log.Warn("[SigCipher] Could not find decipher function name"); + return null; + } + + private static string? FindByDecodeURIComponentWithNumber(string baseJs) + { + var span = baseJs.AsSpan(); + ReadOnlySpan marker = "decodeURIComponent"; + + int searchFrom = 0; + while (searchFrom < span.Length) + { + int markerIdx = span[searchFrom..].IndexOf(marker, StringComparison.Ordinal); + if (markerIdx < 0) return null; + markerIdx += searchFrom; + searchFrom = markerIdx + marker.Length; + + int pos = markerIdx - 1; + while (pos >= 0 && span[pos] is ' ' or '\t') pos--; + if (pos < 0 || span[pos] != ',') continue; + pos--; + + while (pos >= 0 && span[pos] is ' ' or '\t') pos--; + + int digitEnd = pos + 1; + while (pos >= 0 && char.IsAsciiDigit(span[pos])) pos--; + int digitCount = digitEnd - pos - 1; + if (digitCount == 0) continue; + + var numSpan = span.Slice(pos + 1, digitCount); + if (!int.TryParse(numSpan, out int num) || num < 1 || num > 999) continue; + + while (pos >= 0 && span[pos] is ' ' or '\t') pos--; + if (pos < 0 || span[pos] != '(') continue; + pos--; + + while (pos >= 0 && span[pos] is ' ' or '\t') pos--; + + int identEnd = pos + 1; + while (pos >= 0 && (char.IsLetterOrDigit(span[pos]) || span[pos] is '_' or '$')) + pos--; + int identStart = pos + 1; + int identLen = identEnd - identStart; + if (identLen == 0) continue; + + while (pos >= 0 && span[pos] is ' ' or '\t') pos--; + if (pos < 0 || span[pos] != '=') continue; + if (pos > 0 && span[pos - 1] == '=') continue; + + var funcName = span.Slice(identStart, identLen).ToString(); + + if (ValidateDecipherCandidate(baseJs, funcName)) + return funcName; + } + + return null; + } + + private static string? FindByDecodeURIComponentDirect(string baseJs) + { + var span = baseJs.AsSpan(); + ReadOnlySpan marker = "decodeURIComponent("; + + int searchFrom = 0; + while (searchFrom < span.Length) + { + int markerIdx = span[searchFrom..].IndexOf(marker, StringComparison.Ordinal); + if (markerIdx < 0) return null; + markerIdx += searchFrom; + searchFrom = markerIdx + marker.Length; + + int pos = markerIdx - 1; + while (pos >= 0 && span[pos] is ' ' or '\t') pos--; + if (pos < 0 || span[pos] != '(') continue; + pos--; + + while (pos >= 0 && span[pos] is ' ' or '\t') pos--; + + int identEnd = pos + 1; + while (pos >= 0 && (char.IsLetterOrDigit(span[pos]) || span[pos] is '_' or '$')) + pos--; + int identStart = pos + 1; + int identLen = identEnd - identStart; + if (identLen == 0) continue; + + var funcName = span.Slice(identStart, identLen).ToString(); + if (funcName is "encodeURIComponent" or "decodeURIComponent" or "decodeURI" or "encodeURI") + continue; + + while (pos >= 0 && span[pos] is ' ' or '\t') pos--; + if (pos < 0 || span[pos] != '=') continue; + if (pos > 0 && span[pos - 1] == '=') continue; + + if (ValidateDecipherCandidate(baseJs, funcName)) + return funcName; + } + + return null; + } + + private static string? FindByRegexPatterns(string baseJs) + { + foreach (Match m in SplitJoinFunctionRegex().Matches(baseJs)) + { + if (ValidateDecipherCandidate(baseJs, m.Groups[1].Value)) + return m.Groups[1].Value; + } + + foreach (Match m in DecipherCallRegex().Matches(baseJs)) + { + if (ValidateDecipherCandidate(baseJs, m.Groups[1].Value)) + return m.Groups[1].Value; + } + + return null; + } + + /// + /// Validates candidate by checking if its body (with dict resolved) contains + /// split("") and join("") — the hallmarks of a signature decipher function. + /// + private static bool ValidateDecipherCandidate(string baseJs, string funcName) + { + var funcInfo = JsFunctionExtractor.FindFunctionByName(baseJs, funcName); + if (funcInfo is null) return false; + + var code = funcInfo.Value.Code; + if (code.Length < 30) return false; + + // Try resolving dict references first + var dictName = JsDictResolver.DetectDictName(code); + if (dictName is not null) + { + var elements = JsFunctionExtractor.ExtractArrayElements(baseJs, dictName); + if (elements is not null && elements.Length >= 10) + code = JsDictResolver.Resolve(code, dictName, elements); + } + + var codeSpan = code.AsSpan(); + + bool hasSplit = codeSpan.Contains(".split(", StringComparison.Ordinal) || + codeSpan.Contains("[\"split\"]", StringComparison.Ordinal); + + bool hasJoin = codeSpan.Contains(".join(", StringComparison.Ordinal) || + codeSpan.Contains("[\"join\"]", StringComparison.Ordinal); + + if (!hasSplit) + { + Log.Debug($"[SigCipher] Candidate '{funcName}' rejected: no split"); + return false; + } + + // join is optional (some functions return the array and caller joins) + return true; + } + + // ═══════════════════════════════════════════════════════════════ + // CIPHER OBJECT & OPERATIONS + // ═══════════════════════════════════════════════════════════════ + + private static string? FindCipherObjectNameFromCode(string funcCode, string? dictArrayName) + { + var paramNames = JsFunctionExtractor.ExtractParamNames(funcCode); + var span = funcCode.AsSpan(); + + // After dict resolution, cipher calls look like: zu.Rb(N, 35) + // So direct method call detection works + var directObj = FindDirectMethodCallObject(span, paramNames); + if (directObj is not null) return directObj; + + // Fallback: dict-indexed pattern (unresoled code) + if (dictArrayName is not null) + { + var dictTarget = string.Concat(dictArrayName, "["); + var dictTargetSpan = dictTarget.AsSpan(); + + int searchFrom = 0; + while (searchFrom < span.Length) + { + int dictIdx = span[searchFrom..].IndexOf(dictTargetSpan, StringComparison.Ordinal); + if (dictIdx < 0) break; + dictIdx += searchFrom; + searchFrom = dictIdx + dictTargetSpan.Length; + + int beforeDict = dictIdx - 1; + while (beforeDict >= 0 && span[beforeDict] is ' ' or '\t') beforeDict--; + if (beforeDict < 0 || span[beforeDict] != '[') continue; + + int pos = beforeDict - 1; + while (pos >= 0 && span[pos] is ' ' or '\t') pos--; + + int identEnd = pos + 1; + while (pos >= 0 && (char.IsLetterOrDigit(span[pos]) || span[pos] is '_' or '$')) + pos--; + int identStart = pos + 1; + int identLen = identEnd - identStart; + + if (identLen > 0) + { + var objName = span.Slice(identStart, identLen).ToString(); + if (!paramNames.Contains(objName) && objName != dictArrayName) + return objName; + } + } + } + + return null; + } + + private static string? FindDirectMethodCallObject( + ReadOnlySpan code, HashSet paramNames) + { + int i = 0; + while (i < code.Length) + { + if (!IsIdentStart(code[i])) { i++; continue; } + + int identStart = i; + i++; + while (i < code.Length && (char.IsLetterOrDigit(code[i]) || code[i] is '_' or '$')) + i++; + int identEnd = i; + + if (i >= code.Length || code[i] != '.') continue; + + int afterDot = i + 1; + if (afterDot >= code.Length || !IsIdentStart(code[afterDot])) continue; + + int methodEnd = afterDot; + while (methodEnd < code.Length && + (char.IsLetterOrDigit(code[methodEnd]) || code[methodEnd] is '_' or '$')) + methodEnd++; + + int pos = methodEnd; + while (pos < code.Length && code[pos] is ' ' or '\t') pos++; + + if (pos < code.Length && code[pos] == '(') + { + pos++; + while (pos < code.Length && code[pos] is ' ' or '\t') pos++; + + if (pos < code.Length && (IsIdentStart(code[pos]) || char.IsAsciiDigit(code[pos]))) + { + var objName = code.Slice(identStart, identEnd - identStart).ToString(); + if (!paramNames.Contains(objName)) + return objName; + } + } + + i = methodEnd; + } + + return null; + } + + [MethodImpl(MethodImplOptions.AggressiveInlining)] + private static bool IsIdentStart(char c) => + char.IsLetter(c) || c is '_' or '$'; + + // ═══════════════════════════════════════════════════════════════ + // PARSE METHODS & EXTRACT OPERATIONS + // ═══════════════════════════════════════════════════════════════ + + [GeneratedRegex(@"(\w+)\s*:\s*function\s*\([^)]*\)\s*\{([^}]+)\}")] + private static partial Regex MethodDefRegex(); + + [GeneratedRegex(@"([a-zA-Z_$][\w$]{0,3})=function\(\w+\)\{\w+=\w+\.split\(""""\)")] + private static partial Regex SplitJoinFunctionRegex(); + + [GeneratedRegex(@"=\s*([a-zA-Z_$][\w$]{0,5})\s*\(\s*\d+\s*,\s*decodeURIComponent\s*\(")] + private static partial Regex DecipherCallRegex(); + + private static Dictionary ParseCipherMethods( + string objCode, string[]? dictArray) + { + var result = new Dictionary(); + + foreach (Match m in MethodDefRegex().Matches(objCode)) + { + var methodName = m.Groups[1].Value; + var body = m.Groups[2].Value; + var bodySpan = body.AsSpan(); + + SigCipherOpType? opType = null; + + // After dict resolution, standard patterns work directly: + // r.reverse() → Reverse + // r.splice(0, n) → Splice + // r[0] ... % ... → Swap + + if (bodySpan.Contains(".reverse()", StringComparison.Ordinal) || + bodySpan.Contains("[\"reverse\"]()", StringComparison.Ordinal)) + { + opType = SigCipherOpType.Reverse; + } + else if (bodySpan.Contains(".splice(0,", StringComparison.Ordinal) || + bodySpan.Contains("[\"splice\"](0,", StringComparison.Ordinal)) + { + opType = SigCipherOpType.Splice; + } + else if (bodySpan.Contains("[0]", StringComparison.Ordinal) && + bodySpan.Contains("%", StringComparison.Ordinal)) + { + opType = SigCipherOpType.Swap; + } + + // Fallback for unresolved dict patterns + if (opType is null && dictArray is not null) + { + opType = InferOpTypeFromDictCalls(body, dictArray); + } + + if (opType is null) + { + // Structural fallback: single no-arg call → reverse + if (body.Trim().Length < 80 && + !bodySpan.Contains(",", StringComparison.Ordinal) && + (bodySpan.Contains("()", StringComparison.Ordinal))) + opType = SigCipherOpType.Reverse; + else if (bodySpan.Trim().Contains("(0,", StringComparison.Ordinal) && + !bodySpan.Trim().Contains("[0]", StringComparison.Ordinal)) + opType = SigCipherOpType.Splice; + } + + if (opType.HasValue) + { + result[methodName] = opType.Value; + Log.Debug($"[SigCipher] Method '{methodName}' → {opType.Value}"); + } + else + { + Log.Debug($"[SigCipher] Method '{methodName}' → UNKNOWN, body: {body.Trim()}"); + } + } + + return result; + } + + private static SigCipherOpType? InferOpTypeFromDictCalls(string body, string[] dictArray) + { + var span = body.AsSpan(); + int pos = 0; + + while (pos < span.Length) + { + int bracketIdx = span[pos..].IndexOf('['); + if (bracketIdx < 0) break; + bracketIdx += pos; + pos = bracketIdx + 1; + + while (pos < span.Length && span[pos] is ' ' or '\t') pos++; + int identStart = pos; + while (pos < span.Length && (char.IsLetterOrDigit(span[pos]) || span[pos] is '_' or '$')) + pos++; + if (pos == identStart) continue; + + while (pos < span.Length && span[pos] is ' ' or '\t') pos++; + if (pos >= span.Length || span[pos] != '[') continue; + pos++; + + while (pos < span.Length && span[pos] is ' ' or '\t') pos++; + int numStart = pos; + while (pos < span.Length && char.IsAsciiDigit(span[pos])) pos++; + if (pos == numStart) continue; + + if (!int.TryParse(span.Slice(numStart, pos - numStart), out int idx)) continue; + if (idx < 0 || idx >= dictArray.Length) continue; + + var resolved = dictArray[idx]; + if (resolved == "reverse") return SigCipherOpType.Reverse; + if (resolved == "splice") return SigCipherOpType.Splice; + } + + if (span.Contains("[0]", StringComparison.Ordinal) && + span.Contains("%", StringComparison.Ordinal)) + return SigCipherOpType.Swap; + + return null; + } + + private static List? ExtractOperations( + string funcCode, string cipherObjName, + Dictionary methodMap, + string[]? dictArray, string? dictArrayName) + { + // After dict resolution, direct calls (zu.Rb) should work + var ops = ExtractDirectCalls(funcCode, cipherObjName, methodMap); + if (ops.Count >= 3) return ops; + + // Fallback for unresolved dict-indexed calls + if (dictArray is not null && dictArrayName is not null) + { + ops = ExtractArrayCalls(funcCode, cipherObjName, dictArrayName, dictArray, methodMap); + if (ops.Count >= 3) return ops; + } + + return ops.Count > 0 ? ops : null; + } + + private static List ExtractDirectCalls( + string code, string cipherObjName, + Dictionary methodMap) + { + var ops = new List(); + var span = code.AsSpan(); + var objPrefix = string.Concat(cipherObjName, "."); + var objPrefixSpan = objPrefix.AsSpan(); + + int searchFrom = 0; + while (searchFrom < span.Length) + { + int idx = span[searchFrom..].IndexOf(objPrefixSpan, StringComparison.Ordinal); + if (idx < 0) break; + idx += searchFrom; + searchFrom = idx + objPrefixSpan.Length; + + if (idx > 0 && (char.IsLetterOrDigit(span[idx - 1]) || span[idx - 1] is '_' or '$')) + continue; + + int methodStart = idx + objPrefixSpan.Length; + int methodEnd = methodStart; + while (methodEnd < span.Length && + (char.IsLetterOrDigit(span[methodEnd]) || span[methodEnd] is '_' or '$')) + methodEnd++; + + if (methodEnd == methodStart) continue; + + int pos = methodEnd; + while (pos < span.Length && span[pos] is ' ' or '\t') pos++; + if (pos >= span.Length || span[pos] != '(') continue; + pos++; + + while (pos < span.Length && span[pos] is ' ' or '\t') pos++; + while (pos < span.Length && + (char.IsLetterOrDigit(span[pos]) || span[pos] is '_' or '$')) + pos++; + while (pos < span.Length && span[pos] is ' ' or '\t') pos++; + + int param = 0; + if (pos < span.Length && span[pos] == ',') + { + pos++; + while (pos < span.Length && span[pos] is ' ' or '\t') pos++; + int numStart = pos; + while (pos < span.Length && char.IsAsciiDigit(span[pos])) pos++; + if (pos > numStart) + int.TryParse(span.Slice(numStart, pos - numStart), out param); + } + + var methodName = span[methodStart..methodEnd].ToString(); + if (methodMap.TryGetValue(methodName, out var opType)) + ops.Add(new SigCipherOperation(opType, param)); + } + + return ops; + } + + private static List ExtractArrayCalls( + string code, string cipherObjName, string dictArrayName, + string[] dictArray, Dictionary methodMap) + { + var ops = new List(); + var span = code.AsSpan(); + var target = string.Concat(cipherObjName, "["); + var targetSpan = target.AsSpan(); + var dictNameSpan = dictArrayName.AsSpan(); + + int searchFrom = 0; + while (searchFrom < span.Length) + { + int idx = span[searchFrom..].IndexOf(targetSpan, StringComparison.Ordinal); + if (idx < 0) break; + idx += searchFrom; + searchFrom = idx + targetSpan.Length; + + if (idx > 0 && (char.IsLetterOrDigit(span[idx - 1]) || span[idx - 1] is '_' or '$')) + continue; + + int pos = idx + targetSpan.Length; + while (pos < span.Length && span[pos] is ' ' or '\t') pos++; + + if (pos + dictNameSpan.Length > span.Length) continue; + if (!span.Slice(pos, dictNameSpan.Length).SequenceEqual(dictNameSpan)) continue; + pos += dictNameSpan.Length; + + while (pos < span.Length && span[pos] is ' ' or '\t') pos++; + if (pos >= span.Length || span[pos] != '[') continue; + pos++; + + while (pos < span.Length && span[pos] is ' ' or '\t') pos++; + int numStart = pos; + while (pos < span.Length && char.IsAsciiDigit(span[pos])) pos++; + if (pos == numStart) continue; + if (!int.TryParse(span.Slice(numStart, pos - numStart), out int arrayIdx)) continue; + + while (pos < span.Length && span[pos] is ' ' or '\t') pos++; + if (pos >= span.Length || span[pos] != ']') continue; + pos++; + while (pos < span.Length && span[pos] is ' ' or '\t') pos++; + if (pos >= span.Length || span[pos] != ']') continue; + pos++; + + while (pos < span.Length && span[pos] is ' ' or '\t') pos++; + if (pos >= span.Length || span[pos] != '(') continue; + pos++; + + while (pos < span.Length && span[pos] is ' ' or '\t') pos++; + while (pos < span.Length && + (char.IsLetterOrDigit(span[pos]) || span[pos] is '_' or '$')) + pos++; + while (pos < span.Length && span[pos] is ' ' or '\t') pos++; + + int param = 0; + if (pos < span.Length && span[pos] == ',') + { + pos++; + while (pos < span.Length && span[pos] is ' ' or '\t') pos++; + int paramStart = pos; + while (pos < span.Length && char.IsAsciiDigit(span[pos])) pos++; + if (pos > paramStart) + int.TryParse(span.Slice(paramStart, pos - paramStart), out param); + } + + if (arrayIdx < dictArray.Length) + { + var methodName = dictArray[arrayIdx]; + if (methodMap.TryGetValue(methodName, out var opType)) + ops.Add(new SigCipherOperation(opType, param)); + } + } + + return ops; + } +} \ No newline at end of file diff --git a/Core/Youtube/Bridge/SigCipher/SigCipherManifest.cs b/Core/Youtube/Bridge/SigCipher/SigCipherManifest.cs new file mode 100644 index 0000000..bb3fa62 --- /dev/null +++ b/Core/Youtube/Bridge/SigCipher/SigCipherManifest.cs @@ -0,0 +1,139 @@ +using System.Text; + +namespace LMP.Core.Youtube.Bridge.SigCipher; + +/// +/// Манифест операций дешифровки подписи. +/// Иммутабельный, потокобезопасный. +/// +public sealed class SigCipherManifest +{ + /// Версия плеера (для кэширования) + public string PlayerVersion { get; } + + /// Последовательность операций + public IReadOnlyList Operations { get; } + + /// Время создания манифеста + public DateTimeOffset CreatedAt { get; } + + /// Источник манифеста (для диагностики) + public string Source { get; } + + public SigCipherManifest( + string playerVersion, + IEnumerable operations, + string source = "extracted") + { + PlayerVersion = playerVersion; + Operations = operations.ToArray(); + CreatedAt = DateTimeOffset.UtcNow; + Source = source; + } + + /// + /// Применяет все операции к зашифрованной подписи. + /// + public string Decipher(string encryptedSignature) + { + if (string.IsNullOrEmpty(encryptedSignature)) + return encryptedSignature; + + // Работаем с char[] для производительности + var chars = encryptedSignature.ToCharArray(); + int length = chars.Length; + + foreach (var op in Operations) + { + switch (op.Type) + { + case SigCipherOpType.Swap: + int swapPos = op.Parameter % length; + (chars[0], chars[swapPos]) = (chars[swapPos], chars[0]); + break; + + case SigCipherOpType.Reverse: + Array.Reverse(chars, 0, length); + break; + + case SigCipherOpType.Splice: + // Удаляем первые N символов — просто сдвигаем указатели + int removeCount = Math.Min(op.Parameter, length); + if (removeCount > 0 && removeCount < length) + { + // Создаём новый массив без первых N элементов + var newChars = new char[length - removeCount]; + Array.Copy(chars, removeCount, newChars, 0, newChars.Length); + chars = newChars; + length = chars.Length; + } + break; + } + } + + return new string(chars); + } + + /// + /// Сериализует манифест для кэширования. + /// Формат: "version|op1,param1;op2,param2;..." + /// + public string Serialize() + { + var sb = new StringBuilder(128); + sb.Append(PlayerVersion); + sb.Append('|'); + + for (int i = 0; i < Operations.Count; i++) + { + if (i > 0) sb.Append(';'); + var op = Operations[i]; + sb.Append((int)op.Type); + sb.Append(','); + sb.Append(op.Parameter); + } + + return sb.ToString(); + } + + /// + /// Десериализует манифест из строки. + /// + public static SigCipherManifest? Deserialize(string data) + { + try + { + var parts = data.Split('|', 2); + if (parts.Length != 2) return null; + + var version = parts[0]; + var operations = new List(); + + if (!string.IsNullOrEmpty(parts[1])) + { + foreach (var opStr in parts[1].Split(';')) + { + var opParts = opStr.Split(','); + if (opParts.Length != 2) continue; + + if (int.TryParse(opParts[0], out int typeInt) && + int.TryParse(opParts[1], out int param)) + { + operations.Add(new SigCipherOperation((SigCipherOpType)typeInt, param)); + } + } + } + + return operations.Count > 0 + ? new SigCipherManifest(version, operations, "cached") + : null; + } + catch + { + return null; + } + } + + public override string ToString() => + $"SigCipherManifest[{PlayerVersion}]: {string.Join(" → ", Operations)}"; +} \ No newline at end of file diff --git a/Core/Youtube/Bridge/SigCipher/SigCipherOperation.cs b/Core/Youtube/Bridge/SigCipher/SigCipherOperation.cs new file mode 100644 index 0000000..c454d1b --- /dev/null +++ b/Core/Youtube/Bridge/SigCipher/SigCipherOperation.cs @@ -0,0 +1,30 @@ +namespace LMP.Core.Youtube.Bridge.SigCipher; + +/// +/// Тип операции над массивом символов подписи. +/// +public enum SigCipherOpType +{ + /// swap(0, n) — меняет arr[0] с arr[n % length] + Swap, + + /// reverse() — переворачивает массив + Reverse, + + /// splice(0, n) — удаляет первые n элементов + Splice +} + +/// +/// Одна операция дешифровки подписи. +/// +public readonly record struct SigCipherOperation(SigCipherOpType Type, int Parameter) +{ + public override string ToString() => Type switch + { + SigCipherOpType.Swap => $"swap(0, {Parameter})", + SigCipherOpType.Reverse => "reverse()", + SigCipherOpType.Splice => $"splice(0, {Parameter})", + _ => $"unknown({Parameter})" + }; +} \ No newline at end of file diff --git a/Core/Youtube/Bridge/SigCipher/SigCipherSolver.cs b/Core/Youtube/Bridge/SigCipher/SigCipherSolver.cs new file mode 100644 index 0000000..9e8ae93 --- /dev/null +++ b/Core/Youtube/Bridge/SigCipher/SigCipherSolver.cs @@ -0,0 +1,364 @@ +using System.Diagnostics; +using System.Runtime.CompilerServices; + +namespace LMP.Core.Youtube.Bridge.SigCipher; + +/// +/// Математический решатель для дешифровки подписи YouTube. +/// Работает БЕЗ парсинга JavaScript — только анализ входа/выхода. +/// +/// Стратегия: constraint propagation + forward simulation. +/// Для каждого swap'а симулируем оставшиеся операции и проверяем, +/// какие значения параметра дают правильный символ на ключевых позициях. +/// Это сужает пространство поиска с O(99^N) до O(K^N) где K ≈ 1-5. +/// +public static class SigCipherSolver +{ + private static readonly OpKind[][] KnownPatterns = + [ + // 4 операции (самые частые) + [OpKind.Swap, OpKind.Reverse, OpKind.Swap, OpKind.Splice], + [OpKind.Swap, OpKind.Swap, OpKind.Reverse, OpKind.Splice], + [OpKind.Reverse, OpKind.Swap, OpKind.Swap, OpKind.Splice], + + // 3 операции + [OpKind.Reverse, OpKind.Swap, OpKind.Splice], + [OpKind.Swap, OpKind.Reverse, OpKind.Splice], + [OpKind.Swap, OpKind.Splice], + [OpKind.Reverse, OpKind.Splice], + + // 5 операций (редкие) + [OpKind.Swap, OpKind.Swap, OpKind.Swap, OpKind.Splice], + [OpKind.Swap, OpKind.Reverse, OpKind.Swap, OpKind.Swap, OpKind.Splice], + ]; + + private enum OpKind : byte { Swap, Reverse, Splice } + + // ═══════════════════════════════════════════════════════════════ + // PUBLIC API + // ═══════════════════════════════════════════════════════════════ + + public static List? Solve(string encrypted, string decrypted) + { + if (string.IsNullOrEmpty(encrypted) || string.IsNullOrEmpty(decrypted)) + return null; + + int spliceAmount = encrypted.Length - decrypted.Length; + if (spliceAmount is < 0 or > 3) + return null; + + var sw = Stopwatch.StartNew(); + int totalAttempts = 0; + + // Splice candidates: если длина отличается — точное значение, иначе 1-3 + int[] spliceCandidates = spliceAmount > 0 ? [spliceAmount] : [1, 2, 3]; + + foreach (var pattern in KnownPatterns) + { + foreach (int splice in spliceCandidates) + { + var ops = BuildOpsTemplate(pattern, splice); + var verifyBuf = new char[encrypted.Length]; + + if (SolveRecursive(pattern, ops, 0, encrypted, decrypted, verifyBuf, ref totalAttempts)) + { + sw.Stop(); + Log.Info($"[SigSolver] Found in {totalAttempts} attempts, " + + $"{sw.ElapsedMilliseconds}ms: {FormatOps(ops)}"); + return [.. ops]; + } + } + } + + sw.Stop(); + Log.Warn($"[SigSolver] No solution after {totalAttempts} attempts, " + + $"{sw.ElapsedMilliseconds}ms"); + return null; + } + + public static List? SolveParallel( + string encrypted, string decrypted, CancellationToken ct = default) + { + if (string.IsNullOrEmpty(encrypted) || string.IsNullOrEmpty(decrypted)) + return null; + + int spliceAmount = encrypted.Length - decrypted.Length; + if (spliceAmount is < 0 or > 3) + return null; + + int[] spliceCandidates = spliceAmount > 0 ? [spliceAmount] : [1, 2, 3]; + + // Build all (pattern, splice) combinations + var tasks = new List<(OpKind[] Pattern, int Splice)>(); + foreach (var pattern in KnownPatterns) + foreach (int splice in spliceCandidates) + tasks.Add((pattern, splice)); + + List? result = null; + int found = 0; + + Parallel.ForEach( + tasks, + new ParallelOptions + { + MaxDegreeOfParallelism = Math.Min(4, Environment.ProcessorCount), + CancellationToken = ct + }, + (task, state) => + { + if (Volatile.Read(ref found) == 1) { state.Stop(); return; } + + var ops = BuildOpsTemplate(task.Pattern, task.Splice); + var verifyBuf = new char[encrypted.Length]; + int attempts = 0; + + if (SolveRecursive(task.Pattern, ops, 0, encrypted, decrypted, verifyBuf, ref attempts)) + { + if (Interlocked.Exchange(ref found, 1) == 0) + { + Interlocked.Exchange(ref result, [.. ops]); + state.Stop(); + } + } + }); + + return result; + } + + // ═══════════════════════════════════════════════════════════════ + // CORE SOLVER: Constraint-propagating recursive search + // ═══════════════════════════════════════════════════════════════ + + private static SigCipherOperation[] BuildOpsTemplate(OpKind[] pattern, int spliceParam) + { + var ops = new SigCipherOperation[pattern.Length]; + for (int i = 0; i < pattern.Length; i++) + { + ops[i] = pattern[i] switch + { + OpKind.Reverse => new SigCipherOperation(SigCipherOpType.Reverse, 0), + OpKind.Splice => new SigCipherOperation(SigCipherOpType.Splice, spliceParam), + _ => default // swap — will be filled during search + }; + } + return ops; + } + + private static bool SolveRecursive( + OpKind[] pattern, SigCipherOperation[] ops, int index, + string encrypted, string decrypted, + char[] verifyBuf, ref int attempts) + { + // Skip non-swap positions + while (index < pattern.Length && pattern[index] != OpKind.Swap) + index++; + + // All swaps filled — verify + if (index >= pattern.Length) + { + attempts++; + return VerifyInPlace(ops, encrypted, decrypted, verifyBuf); + } + + // Get constrained swap candidates for this position + var candidates = FindSwapCandidates(pattern, ops, index, encrypted, decrypted); + + foreach (int swapParam in candidates) + { + ops[index] = new SigCipherOperation(SigCipherOpType.Swap, swapParam); + + if (SolveRecursive(pattern, ops, index + 1, + encrypted, decrypted, verifyBuf, ref attempts)) + return true; + } + + return false; + } + + /// + /// Finds which swap parameters at position `swapIndex` could possibly + /// produce the correct output character at a specific tracked position. + /// + private static List FindSwapCandidates( + OpKind[] pattern, SigCipherOperation[] ops, int swapIndex, + string encrypted, string decrypted) + { + // Step 1: Simulate all operations BEFORE this swap + var buf = new char[encrypted.Length]; + encrypted.CopyTo(0, buf, 0, encrypted.Length); + int len = encrypted.Length; + + for (int i = 0; i < swapIndex; i++) + ApplyOp(ops[i], buf, ref len); + + // Step 2: Track position 0 in decrypted backwards through + // all operations AFTER this swap (inclusive) to find + // what position in buf (after swap) maps to decrypted[0]. + + // Compute lengths at each step + var lengths = new int[pattern.Length + 1]; + lengths[swapIndex] = len; + for (int i = swapIndex; i < pattern.Length; i++) + { + lengths[i + 1] = pattern[i] == OpKind.Splice + ? lengths[i] - Math.Min(ops[i].Parameter, lengths[i]) + : lengths[i]; + } + + // Reverse-trace from final output position 0 back to just after swap + int pos = 0; + for (int i = pattern.Length - 1; i > swapIndex; i--) + { + int lenBefore = lengths[i]; + + switch (pattern[i]) + { + case OpKind.Reverse: + pos = lenBefore - 1 - pos; + break; + + case OpKind.Splice: + pos += ops[i].Parameter; + break; + + case OpKind.Swap: + int swapN = ops[i].Parameter % lenBefore; + if (pos == 0) pos = swapN; + else if (pos == swapN) pos = 0; + break; + } + } + + // `pos` is now the position in the array AFTER the current swap + // that must contain the character that eventually becomes decrypted[0]. + char neededChar = decrypted[0]; + + // Step 3: For swap(0, n), determine which values of n produce + // the needed character at position `pos`. + var candidates = new List(16); + + if (pos == 0) + { + // Need buf[n % len] == neededChar + for (int n = 1; n < len; n++) + { + if (buf[n] == neededChar) + { + candidates.Add(n); + for (int mult = 1; mult * len + n <= 99; mult++) + candidates.Add(mult * len + n); + } + } + } + else if (buf[0] == neededChar) + { + // Case 2: n % len == pos → buf_after_swap[pos] = buf[0] == neededChar + for (int mult = 0; mult * len + pos <= 99; mult++) + { + int n = mult * len + pos; + if (n > 0) candidates.Add(n); + } + + if (pos < len && buf[pos] == neededChar) + AddFullRange(candidates, len, pos); + } + else if (pos < len && buf[pos] == neededChar) + { + // Case 3: position `pos` is unchanged by swap as long as n%len != pos + AddFullRange(candidates, len, pos); + } + + if (candidates.Count == 0) + AddFullRange(candidates, len, -1); + + candidates.Sort(); + return Deduplicate(candidates); + } + + private static void AddFullRange(List candidates, int len, int excludeModPos) + { + // YouTube hot range first: 40-74, then 1-39, then 75-99 + for (int i = 40; i <= 74; i++) + if (excludeModPos < 0 || i % len != excludeModPos) candidates.Add(i); + for (int i = 1; i <= 39; i++) + if (excludeModPos < 0 || i % len != excludeModPos) candidates.Add(i); + for (int i = 75; i <= 99; i++) + if (excludeModPos < 0 || i % len != excludeModPos) candidates.Add(i); + } + + private static List Deduplicate(List sorted) + { + if (sorted.Count <= 1) return sorted; + var result = new List(sorted.Count) { sorted[0] }; + for (int i = 1; i < sorted.Count; i++) + { + if (sorted[i] != sorted[i - 1]) + result.Add(sorted[i]); + } + return result; + } + + // ═══════════════════════════════════════════════════════════════ + // SIMULATION HELPERS + // ═══════════════════════════════════════════════════════════════ + + [MethodImpl(MethodImplOptions.AggressiveInlining)] + private static void ApplyOp(SigCipherOperation op, char[] buf, ref int len) + { + switch (op.Type) + { + case SigCipherOpType.Swap: + int swapPos = op.Parameter % len; + (buf[0], buf[swapPos]) = (buf[swapPos], buf[0]); + break; + case SigCipherOpType.Reverse: + Array.Reverse(buf, 0, len); + break; + case SigCipherOpType.Splice: + int rm = Math.Min(op.Parameter, len); + if (rm > 0 && rm < len) + { + Array.Copy(buf, rm, buf, 0, len - rm); + len -= rm; + } + break; + } + } + + [MethodImpl(MethodImplOptions.AggressiveInlining)] + private static bool VerifyInPlace( + ReadOnlySpan ops, + string input, string expected, char[] buffer) + { + input.CopyTo(0, buffer, 0, input.Length); + int length = input.Length; + + foreach (var op in ops) + { + switch (op.Type) + { + case SigCipherOpType.Swap: + int swapPos = op.Parameter % length; + (buffer[0], buffer[swapPos]) = (buffer[swapPos], buffer[0]); + break; + case SigCipherOpType.Reverse: + Array.Reverse(buffer, 0, length); + break; + case SigCipherOpType.Splice: + int removeCount = Math.Min(op.Parameter, length); + if (removeCount > 0 && removeCount < length) + { + Array.Copy(buffer, removeCount, buffer, 0, length - removeCount); + length -= removeCount; + } + break; + } + } + + if (length != expected.Length) return false; + return expected.AsSpan().SequenceEqual(buffer.AsSpan(0, length)); + } + + private static string FormatOps(SigCipherOperation[] ops) => + string.Join(" → ", ops.Select(static o => o.ToString())); +} \ No newline at end of file diff --git a/Core/Youtube/Bridge/VideoWatchPage.cs b/Core/Youtube/Bridge/VideoWatchPage.cs index a299072..84b59c5 100644 --- a/Core/Youtube/Bridge/VideoWatchPage.cs +++ b/Core/Youtube/Bridge/VideoWatchPage.cs @@ -40,7 +40,7 @@ public long? LikeCount } // То же самое для дизлайков (обычно 0 или скрыты) - public long? DislikeCount => 0; + public static long? DislikeCount => 0; public PlayerResponse? PlayerResponse { diff --git a/Core/Youtube/Channels/ChannelClient.cs b/Core/Youtube/Channels/ChannelClient.cs index 80cf2c8..404540e 100644 --- a/Core/Youtube/Channels/ChannelClient.cs +++ b/Core/Youtube/Channels/ChannelClient.cs @@ -14,7 +14,7 @@ public partial class ChannelClient(HttpClient http) { private readonly ChannelController _controller = new(http); - private Channel Get(ChannelPage channelPage) + private static Channel Get(ChannelPage channelPage) { var channelId = channelPage.Id diff --git a/Core/Youtube/Exceptions/BotDetectionException.cs b/Core/Youtube/Exceptions/BotDetectionException.cs new file mode 100644 index 0000000..e4844d6 --- /dev/null +++ b/Core/Youtube/Exceptions/BotDetectionException.cs @@ -0,0 +1,33 @@ +namespace LMP.Core.Youtube.Exceptions; + +/// +/// Выбрасывается когда операция заблокирована из-за bot detection cooldown от YouTube. +/// Содержит информацию об оставшемся времени ожидания. +/// +public sealed class BotDetectionException(string message, TimeSpan remaining) : YoutubeExplodeException(message) +{ + /// + /// Оставшееся время cooldown. + /// + public TimeSpan RemainingCooldown { get; } = remaining; + + /// + /// Время когда cooldown закончится. + /// + public DateTime CooldownEndsAt { get; } = DateTime.UtcNow + remaining; + + /// + /// Ключ локализации для сообщения. + /// + public const string LocalizationKey = "Error_BotDetection_Message"; + + /// + /// Форматирует оставшееся время для отображения. + /// + public string FormatRemainingTime() + { + return RemainingCooldown.TotalSeconds >= 60 + ? $"{RemainingCooldown.Minutes}:{RemainingCooldown.Seconds:D2}" + : $"{RemainingCooldown.TotalSeconds:F0}s"; + } +} \ No newline at end of file diff --git a/Core/Youtube/Exceptions/LoginRequiredException.cs b/Core/Youtube/Exceptions/LoginRequiredException.cs new file mode 100644 index 0000000..e58c395 --- /dev/null +++ b/Core/Youtube/Exceptions/LoginRequiredException.cs @@ -0,0 +1,53 @@ +namespace LMP.Core.Youtube.Exceptions; + +/// +/// Выбрасывается когда YouTube требует авторизацию для воспроизведения контента. +/// Обычно для возрастных ограничений (age-restricted) или приватного контента. +/// +public sealed class LoginRequiredException( + string message, + string videoId, + LoginRequiredReason reason) : YoutubeExplodeException(message) +{ + /// + /// Причина требования авторизации. + /// + public LoginRequiredReason Reason { get; } = reason; + + /// + /// ID видео. + /// + public string VideoId { get; } = videoId; + + /// + /// Ключ локализации для данного типа ошибки. + /// + public string GetLocalizationKey() + { + return Reason switch + { + LoginRequiredReason.AgeRestricted => "Error_Login_AgeRestricted", + LoginRequiredReason.Private => "Error_Login_Private", + LoginRequiredReason.MembersOnly => "Error_Login_MembersOnly", + _ => "Error_Login_Required" + }; + } +} + +/// +/// Причина требования авторизации. +/// +public enum LoginRequiredReason +{ + /// Неизвестная причина. + Unknown = 0, + + /// Возрастные ограничения. + AgeRestricted, + + /// Приватное видео. + Private, + + /// Только для подписчиков. + MembersOnly +} \ No newline at end of file diff --git a/Core/Youtube/Exceptions/StreamUnavailableException.cs b/Core/Youtube/Exceptions/StreamUnavailableException.cs new file mode 100644 index 0000000..f9c0b26 --- /dev/null +++ b/Core/Youtube/Exceptions/StreamUnavailableException.cs @@ -0,0 +1,103 @@ +namespace LMP.Core.Youtube.Exceptions; + +/// +/// Выбрасывается когда стримы недоступны (403, блокировка региона, и т.д.). +/// +public sealed class StreamUnavailableException( + string message, + string videoId, + StreamUnavailableReason reason, + int? httpStatusCode = null, + bool wasHlsFallback = false) : YoutubeExplodeException(message) +{ + /// + /// Тип недоступности стрима. + /// + public StreamUnavailableReason Reason { get; } = reason; + + /// + /// ID видео. + /// + public string VideoId { get; } = videoId; + + /// + /// HTTP статус код (если применимо). + /// + public int? HttpStatusCode { get; } = httpStatusCode; + + /// + /// Был ли это HLS fallback. + /// + public bool WasHlsFallback { get; } = wasHlsFallback; + + /// + /// Ключ локализации для данного типа ошибки. + /// + public string GetLocalizationKey() + { + return Reason switch + { + StreamUnavailableReason.Forbidden403 when WasHlsFallback + => "Error_Stream_HlsForbidden", + + StreamUnavailableReason.Forbidden403 + => "Error_Stream_Forbidden", + + StreamUnavailableReason.AllClientsFailed + => "Error_Stream_AllClientsFailed", + + StreamUnavailableReason.RegionBlocked + => "Error_Stream_RegionBlocked", + + StreamUnavailableReason.AgeRestricted + => "Error_Stream_AgeRestricted", + + StreamUnavailableReason.LiveStream + => "Error_Stream_LiveStream", + + StreamUnavailableReason.Private + => "Error_Stream_Private", + + StreamUnavailableReason.Removed + => "Error_Stream_Removed", + + StreamUnavailableReason.PaymentRequired + => "Error_Stream_PaymentRequired", + + _ => "Error_Stream_Unknown" + }; + } +} + +/// +/// Причина недоступности стрима. +/// +public enum StreamUnavailableReason +{ + /// Неизвестная причина. + Unknown = 0, + + /// HTTP 403 Forbidden. + Forbidden403, + + /// Все клиенты не смогли получить стрим. + AllClientsFailed, + + /// Заблокировано в регионе. + RegionBlocked, + + /// Возрастные ограничения. + AgeRestricted, + + /// Прямая трансляция (не VOD). + LiveStream, + + /// Приватное видео. + Private, + + /// Видео удалено. + Removed, + + /// Требуется подписка/оплата. + PaymentRequired +} \ No newline at end of file diff --git a/Core/Youtube/Music/MusicClient.cs b/Core/Youtube/Music/MusicClient.cs index 5a3e623..ab3f681 100644 --- a/Core/Youtube/Music/MusicClient.cs +++ b/Core/Youtube/Music/MusicClient.cs @@ -1,7 +1,7 @@ +using System.Runtime.CompilerServices; using System.Text.Json; using LMP.Core.Models; - namespace LMP.Core.Youtube.Music; public class MusicClient(HttpClient http) @@ -10,7 +10,7 @@ public class MusicClient(HttpClient http) public async Task> GetLikedTracksAsync(CancellationToken cancellationToken = default) { - var allTracks = new List(); + var allTracks = new List(100); var response = await _controller.GetBrowseAsync(browseId: "VLLM", cancellationToken: cancellationToken); ProcessShelves(response.Shelves, allTracks); @@ -47,13 +47,12 @@ public async Task> GetLibraryPlaylistsAsync(CancellationToken can { if (item.Type == "Playlist" && !string.IsNullOrEmpty(item.Id)) { - var bestThumb = item.Thumbnails - .OrderByDescending(t => t.Resolution.Area) - .FirstOrDefault()?.Url; + // Без LINQ: ручной поиск лучшего thumbnail + string? bestThumb = GetBestThumbnailUrl(item.Thumbnails); result.Add(new Playlist { - Id = $"yt_{item.Id}", + Id = string.Concat("yt_", item.Id), YoutubeId = item.Id, StoredName = item.Title, Author = item.Author ?? "Unknown", @@ -66,56 +65,82 @@ public async Task> GetLibraryPlaylistsAsync(CancellationToken can return result; } - // Возвращаем List, которые потом обрабатывает провайдер public async Task> GetPersonalizedHomeAsync(CancellationToken cancellationToken = default) { var response = await _controller.GetBrowseAsync(browseId: "FEmusic_home", cancellationToken: cancellationToken); return response.Shelves; } - private void ProcessShelves(List shelves, List targetList) + private static void ProcessShelves(List shelves, List targetList) { - foreach (var shelf in shelves) + for (int s = 0; s < shelves.Count; s++) { - foreach (var item in shelf.Items) + var items = shelves[s].Items; + for (int i = 0; i < items.Count; i++) { - if (item.Type == "Song" && !string.IsNullOrEmpty(item.Id)) - { - var bestThumb = item.Thumbnails - .OrderByDescending(t => t.Resolution.Area) - .FirstOrDefault()?.Url - ?? $"https://i.ytimg.com/vi/{item.Id}/mqdefault.jpg"; + var item = items[i]; + if (item.Type != "Song" || string.IsNullOrEmpty(item.Id)) + continue; - targetList.Add(new TrackInfo - { - Id = $"yt_{item.Id}", - Title = item.Title, - Author = item.Author ?? item.Album ?? "Unknown", - Duration = item.Duration ?? TimeSpan.Zero, - ThumbnailUrl = bestThumb, - IsMusic = true, - IsLiked = true, - Url = $"https://www.youtube.com/watch?v={item.Id}" - }); - } + // Без LINQ: ручной поиск лучшего thumbnail + string bestThumb = GetBestThumbnailUrl(item.Thumbnails) + ?? string.Concat("https://i.ytimg.com/vi/", item.Id, "/mqdefault.jpg"); + + targetList.Add(new TrackInfo + { + Id = string.Concat("yt_", item.Id), + Title = item.Title, + Author = item.Author ?? item.Album ?? "Unknown", + Duration = item.Duration ?? TimeSpan.Zero, + ThumbnailUrl = bestThumb, + IsMusic = true, + IsLiked = true, + Url = string.Concat("https://www.youtube.com/watch?v=", item.Id) + }); } } } - public void SetVisitorData(string visitorData) + /// + /// Поиск thumbnail с максимальным разрешением без LINQ. + /// + [MethodImpl(MethodImplOptions.AggressiveInlining)] + private static string? GetBestThumbnailUrl(IReadOnlyList thumbnails) { - _controller.VisitorData = visitorData; + if (thumbnails.Count == 0) return null; + + string? bestUrl = null; + int bestArea = -1; + + for (int i = 0; i < thumbnails.Count; i++) + { + var area = thumbnails[i].Resolution.Area; + if (area > bestArea) + { + bestArea = area; + bestUrl = thumbnails[i].Url; + } + } + + return bestUrl; } + public void SetVisitorData(string visitorData) => _controller.VisitorData = visitorData; + public async Task LikeTrackAsync(string videoId, bool like, CancellationToken cancellationToken = default) { var endpoint = like ? "like/like" : "like/removelike"; await _controller.SendLikeActionAsync(endpoint, videoId, cancellationToken); } - public async Task GetAccountMenuAsync(CancellationToken cancellationToken = default) => await _controller.GetAccountMenuAsync(cancellationToken); + public async Task GetAccountMenuAsync(CancellationToken cancellationToken = default) => + await _controller.GetAccountMenuAsync(cancellationToken); - public async Task CreatePlaylistAsync(string title, string description = "", List? initialVideoIds = null, CancellationToken cancellationToken = default) + public async Task CreatePlaylistAsync( + string title, + string description = "", + List? initialVideoIds = null, + CancellationToken cancellationToken = default) { return await _controller.CreatePlaylistAsync(title, description, initialVideoIds, cancellationToken); } diff --git a/Core/Youtube/Music/MusicController.cs b/Core/Youtube/Music/MusicController.cs index 2d6874f..9c5b16c 100644 --- a/Core/Youtube/Music/MusicController.cs +++ b/Core/Youtube/Music/MusicController.cs @@ -1,3 +1,5 @@ +using System.Buffers; +using System.Net.Http.Headers; using System.Text.Json; using LMP.Core.Youtube.Exceptions; using LMP.Core.Youtube.Utils; @@ -9,35 +11,48 @@ internal class MusicController(HttpClient http) { private const string ApiUrl = "https://music.youtube.com/youtubei/v1"; + // Кэшированные UTF-8 байты для статических ключей JSON + private static readonly byte[] Utf8Context = "context"u8.ToArray(); + private static readonly byte[] Utf8Client = "client"u8.ToArray(); + private static readonly byte[] Utf8ClientName = "clientName"u8.ToArray(); + private static readonly byte[] Utf8ClientVersion = "clientVersion"u8.ToArray(); + private static readonly byte[] Utf8Hl = "hl"u8.ToArray(); + private static readonly byte[] Utf8Gl = "gl"u8.ToArray(); + private static readonly byte[] Utf8VisitorData = "visitorData"u8.ToArray(); + private static readonly byte[] Utf8User = "user"u8.ToArray(); + private static readonly byte[] Utf8WebRemix = "WEB_REMIX"u8.ToArray(); + + private static readonly MediaTypeHeaderValue JsonContentType = new("application/json"); + public string VisitorData { get; set; } = ""; - private JsonElement GetContext() + /// + /// Записывает context блок напрямую в writer — без промежуточного JsonDocument. + /// + private void WriteContext(Utf8JsonWriter writer) { - // Сериализуем все строковые значения через JsonSerializer для корректного экранирования - var visitorDataJson = !string.IsNullOrEmpty(VisitorData) - ? JsonSerializer.Serialize(VisitorData) - : "null"; - - var clientVersionJson = JsonSerializer.Serialize(YoutubeHttpHandler.MusicClientVersion); - var hlJson = JsonSerializer.Serialize(YoutubeHttpHandler.GetHl()); - var glJson = JsonSerializer.Serialize(YoutubeHttpHandler.GetGl()); - - var json = $$""" - { - "context": { - "client": { - "clientName": "WEB_REMIX", - "clientVersion": {{clientVersionJson}}, - "hl": {{hlJson}}, - "gl": {{glJson}}, - "visitorData": {{visitorDataJson}} - }, - "user": {} - } - } - """; - - return Json.Parse(json); + writer.WritePropertyName(Utf8Context); + writer.WriteStartObject(); + + writer.WritePropertyName(Utf8Client); + writer.WriteStartObject(); + writer.WriteString(Utf8ClientName, Utf8WebRemix); + writer.WriteString(Utf8ClientVersion, YoutubeHttpHandler.MusicClientVersion); + writer.WriteString(Utf8Hl, YoutubeHttpHandler.GetHl()); + writer.WriteString(Utf8Gl, YoutubeHttpHandler.GetGl()); + + if (!string.IsNullOrEmpty(VisitorData)) + writer.WriteString(Utf8VisitorData, VisitorData); + else + writer.WriteNull(Utf8VisitorData); + + writer.WriteEndObject(); // client + + writer.WritePropertyName(Utf8User); + writer.WriteStartObject(); + writer.WriteEndObject(); // user + + writer.WriteEndObject(); // context } private void UpdateVisitorData(JsonElement root) @@ -60,35 +75,50 @@ private void AttachVisitorDataToRequest(HttpRequestMessage request) } } - public async ValueTask GetBrowseAsync(string? browseId = null, string? continuation = null, CancellationToken cancellationToken = default) + /// + /// Создает HttpContent с использованием ArrayPool. + /// Пишет JSON напрямую в pooled буфер, без двойного копирования. + /// + private HttpContent CreateJsonContent(Action writeBody) { - var url = $"{ApiUrl}/browse"; - using var request = new HttpRequestMessage(HttpMethod.Post, url); + // Используем ArrayBufferWriter с ArrayPool внутри + var bufferWriter = new ArrayBufferWriter(512); + using (var writer = new Utf8JsonWriter(bufferWriter)) + { + writer.WriteStartObject(); + WriteContext(writer); + writeBody(writer); + writer.WriteEndObject(); + } + + // ByteArrayContent забирает копию из WrittenSpan — одна копия вместо двух + var content = new ByteArrayContent(bufferWriter.WrittenSpan.ToArray()); + content.Headers.ContentType = JsonContentType; + return content; + } + public async ValueTask GetBrowseAsync( + string? browseId = null, + string? continuation = null, + CancellationToken cancellationToken = default) + { + using var request = new HttpRequestMessage(HttpMethod.Post, $"{ApiUrl}/browse"); AttachVisitorDataToRequest(request); - using var ms = new MemoryStream(); - using (var writer = new Utf8JsonWriter(ms)) + request.Content = CreateJsonContent(writer => { - writer.WriteStartObject(); - foreach (var prop in GetContext().EnumerateObject()) prop.WriteTo(writer); - if (!string.IsNullOrEmpty(continuation)) writer.WriteString("continuation", continuation); else if (!string.IsNullOrEmpty(browseId)) writer.WriteString("browseId", browseId); + }); - writer.WriteEndObject(); - } - - request.Content = new ByteArrayContent(ms.ToArray()); - request.Content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/json"); - - using var response = await http.SendAsync(request, cancellationToken); - var content = await response.Content.ReadAsStringAsync(cancellationToken); + using var response = await http.SendAsync(request, HttpCompletionOption.ResponseHeadersRead, cancellationToken); response.EnsureSuccessStatusCode(); - var jsonDoc = Json.Parse(content); + // Парсим напрямую из потока — без промежуточной строки + using var stream = await response.Content.ReadAsStreamAsync(cancellationToken); + var jsonDoc = await Json.ParseAsync(stream, cancellationToken); UpdateVisitorData(jsonDoc); return new MusicBrowseResponse(jsonDoc); @@ -99,103 +129,89 @@ public async Task SendLikeActionAsync(string endpoint, string videoId, Cancellat using var request = new HttpRequestMessage(HttpMethod.Post, $"{ApiUrl}/{endpoint}"); AttachVisitorDataToRequest(request); - using var ms = new MemoryStream(); - using (var writer = new Utf8JsonWriter(ms)) + request.Content = CreateJsonContent(writer => { + writer.WritePropertyName("target"); writer.WriteStartObject(); - foreach (var prop in GetContext().EnumerateObject()) prop.WriteTo(writer); - - writer.WriteStartObject("target"); writer.WriteString("videoId", videoId); writer.WriteEndObject(); + }); - writer.WriteEndObject(); - } - - request.Content = new ByteArrayContent(ms.ToArray()); - request.Content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/json"); - - using var response = await http.SendAsync(request, cancellationToken); + using var response = await http.SendAsync(request, HttpCompletionOption.ResponseHeadersRead, cancellationToken); response.EnsureSuccessStatusCode(); - try { UpdateVisitorData(Json.Parse(await response.Content.ReadAsStringAsync(cancellationToken))); } catch { } + try + { + using var stream = await response.Content.ReadAsStreamAsync(cancellationToken); + UpdateVisitorData(await Json.ParseAsync(stream, cancellationToken)); + } + catch { /* best effort */ } } - public async Task CreatePlaylistAsync(string title, string description, List? videoIds, CancellationToken cancellationToken) + public async Task CreatePlaylistAsync( + string title, + string description, + List? videoIds, + CancellationToken cancellationToken) { using var request = new HttpRequestMessage(HttpMethod.Post, $"{ApiUrl}/playlist/create"); AttachVisitorDataToRequest(request); - // Используем Utf8JsonWriter для безопасной сериализации - using var ms = new MemoryStream(); - using (var writer = new Utf8JsonWriter(ms)) + request.Content = CreateJsonContent(writer => { - writer.WriteStartObject(); - - // Копируем context - foreach (var prop in GetContext().EnumerateObject()) - prop.WriteTo(writer); - writer.WriteString("title", title); writer.WriteString("description", description); - - if (videoIds != null && videoIds.Count > 0) + + if (videoIds is { Count: > 0 }) { writer.WriteStartArray("videoIds"); foreach (var id in videoIds) writer.WriteStringValue(id); writer.WriteEndArray(); } + }); - writer.WriteEndObject(); - } - - request.Content = new ByteArrayContent(ms.ToArray()); - request.Content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/json"); - - using var response = await http.SendAsync(request, cancellationToken); + using var response = await http.SendAsync(request, HttpCompletionOption.ResponseHeadersRead, cancellationToken); response.EnsureSuccessStatusCode(); - var jsonDoc = Json.Parse(await response.Content.ReadAsStringAsync(cancellationToken)); + using var stream = await response.Content.ReadAsStreamAsync(cancellationToken); + var jsonDoc = await Json.ParseAsync(stream, cancellationToken); UpdateVisitorData(jsonDoc); return jsonDoc.GetPropertyOrNull("playlistId")?.GetStringOrNull() ?? throw new YoutubeExplodeException("Failed to create playlist."); } - public async Task EditPlaylistAsync(string playlistId, string videoId, string action, CancellationToken cancellationToken) + public async Task EditPlaylistAsync( + string playlistId, + string videoId, + string action, + CancellationToken cancellationToken) { using var request = new HttpRequestMessage(HttpMethod.Post, $"{ApiUrl}/browse/edit_playlist"); AttachVisitorDataToRequest(request); - // Используем Utf8JsonWriter для безопасной сериализации - using var ms = new MemoryStream(); - using (var writer = new Utf8JsonWriter(ms)) + request.Content = CreateJsonContent(writer => { - writer.WriteStartObject(); - - foreach (var prop in GetContext().EnumerateObject()) - prop.WriteTo(writer); - writer.WriteString("playlistId", playlistId); - + writer.WriteStartArray("actions"); writer.WriteStartObject(); writer.WriteString("action", action); writer.WriteString("addedVideoId", videoId); writer.WriteEndObject(); writer.WriteEndArray(); + }); - writer.WriteEndObject(); - } - - request.Content = new ByteArrayContent(ms.ToArray()); - request.Content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/json"); - - using var response = await http.SendAsync(request, cancellationToken); + using var response = await http.SendAsync(request, HttpCompletionOption.ResponseHeadersRead, cancellationToken); response.EnsureSuccessStatusCode(); - try { UpdateVisitorData(Json.Parse(await response.Content.ReadAsStringAsync(cancellationToken))); } catch { } + try + { + using var stream = await response.Content.ReadAsStreamAsync(cancellationToken); + UpdateVisitorData(await Json.ParseAsync(stream, cancellationToken)); + } + catch { /* best effort */ } } public async Task GetAccountMenuAsync(CancellationToken cancellationToken = default) @@ -203,24 +219,16 @@ public async Task GetAccountMenuAsync(CancellationToken cancellatio using var request = new HttpRequestMessage(HttpMethod.Post, $"{ApiUrl}/account/account_menu"); AttachVisitorDataToRequest(request); - using var ms = new MemoryStream(); - using (var writer = new Utf8JsonWriter(ms)) - { - writer.WriteStartObject(); - foreach (var prop in GetContext().EnumerateObject()) prop.WriteTo(writer); - writer.WriteEndObject(); - } - - request.Content = new ByteArrayContent(ms.ToArray()); - request.Content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/json"); + // Только context, без дополнительных полей + request.Content = CreateJsonContent(_ => { }); - using var response = await http.SendAsync(request, cancellationToken); + using var response = await http.SendAsync(request, HttpCompletionOption.ResponseHeadersRead, cancellationToken); response.EnsureSuccessStatusCode(); - var content = await response.Content.ReadAsStringAsync(cancellationToken); - var result = Json.Parse(content); + using var stream = await response.Content.ReadAsStreamAsync(cancellationToken); + var result = await Json.ParseAsync(stream, cancellationToken); UpdateVisitorData(result); - + return result; } } \ No newline at end of file diff --git a/Core/Youtube/Music/MusicModels.cs b/Core/Youtube/Music/MusicModels.cs index 99704da..0a5091f 100644 --- a/Core/Youtube/Music/MusicModels.cs +++ b/Core/Youtube/Music/MusicModels.cs @@ -1,24 +1,18 @@ +using System.Runtime.CompilerServices; using System.Text.Json; using LMP.Core.Models; using LMP.Core.Youtube.Bridge; - using LMP.Core.Youtube.Utils.Extensions; namespace LMP.Core.Youtube.Music; -public class MusicShelf +public sealed class MusicShelf(string title, List items) { - public string Title { get; } - public List Items { get; } - - public MusicShelf(string title, List items) - { - Title = title; - Items = items; - } + public string Title { get; } = title; + public List Items { get; } = items; } -public class MusicItem +public sealed class MusicItem { public string Id { get; set; } = ""; public string Title { get; set; } = ""; @@ -29,27 +23,34 @@ public class MusicItem public string Type { get; set; } = "Song"; } -internal class MusicBrowseResponse +internal sealed class MusicBrowseResponse { public List Shelves { get; } = []; public string? Title { get; private set; } public string? ContinuationToken { get; private set; } + // Кэшированные форматы парсинга длительности + private static readonly string[] DurationFormats = + [@"m\:ss", @"mm\:ss", @"h\:mm\:ss", @"hh\:mm\:ss"]; + public MusicBrowseResponse(JsonElement root) { // 1. Заголовок var header = root.GetPropertyOrNull("header")?.GetPropertyOrNull("musicDetailHeaderRenderer") ?? root.GetPropertyOrNull("header")?.GetPropertyOrNull("musicResponsiveHeaderRenderer"); - Title = header?.GetPropertyOrNull("title")?.GetPropertyOrNull("runs")?.EnumerateArrayOrNull()?.FirstOrDefault().GetPropertyOrNull("text")?.GetStringOrNull() - ?? header?.GetPropertyOrNull("title")?.GetPropertyOrNull("simpleText")?.GetStringOrNull(); + if (header.HasValue) + { + Title = header.Value.GetPropertyOrNull("title")?.GetPropertyOrNull("runs") + ?.GetFirstArrayElementOrNull()?.GetPropertyOrNull("text")?.GetStringOrNull() + ?? header.Value.GetPropertyOrNull("title")?.GetPropertyOrNull("simpleText")?.GetStringOrNull(); + } - // 2. Сначала ищем Continuation (Пагинацию) - // Если это ответ на подгрузку, в нем структура отличается + // 2. Continuation if (TryParseContinuation(root)) return; - // 3. Если это не пагинация, парсим как обычную страницу (Browse) + // 3. Browse var sectionList = root.GetPropertyOrNull("contents") ?.GetPropertyOrNull("twoColumnBrowseResultsRenderer") ?.GetPropertyOrNull("secondaryContents") @@ -58,11 +59,18 @@ public MusicBrowseResponse(JsonElement root) if (sectionList == null) { - sectionList = root.GetPropertyOrNull("contents") + var tabs = root.GetPropertyOrNull("contents") ?.GetPropertyOrNull("singleColumnBrowseResultsRenderer") - ?.GetPropertyOrNull("tabs")?.EnumerateArrayOrNull()?.FirstOrDefault() - .GetPropertyOrNull("tabRenderer")?.GetPropertyOrNull("content") - ?.GetPropertyOrNull("sectionListRenderer")?.GetPropertyOrNull("contents"); + ?.GetPropertyOrNull("tabs"); + + if (tabs != null) + { + var firstTab = tabs.Value.GetFirstArrayElementOrNull(); + sectionList = firstTab?.GetPropertyOrNull("tabRenderer") + ?.GetPropertyOrNull("content") + ?.GetPropertyOrNull("sectionListRenderer") + ?.GetPropertyOrNull("contents"); + } } if (sectionList != null) @@ -71,11 +79,12 @@ public MusicBrowseResponse(JsonElement root) { if (section.TryGetProperty("musicPlaylistShelfRenderer", out var playlistShelf)) { - ParseShelfContent(playlistShelf, "Tracks"); // Парсим треки + ParseShelfContent(playlistShelf, "Tracks"); - // Токен первой страницы (100+) - ContinuationToken ??= playlistShelf.GetPropertyOrNull("continuations")?.EnumerateArrayOrNull()?.FirstOrDefault() - .GetPropertyOrNull("nextContinuationData")?.GetPropertyOrNull("continuation")?.GetStringOrNull(); + ContinuationToken ??= playlistShelf.GetPropertyOrNull("continuations") + ?.GetFirstArrayElementOrNull() + ?.GetPropertyOrNull("nextContinuationData") + ?.GetPropertyOrNull("continuation")?.GetStringOrNull(); } else if (section.TryGetProperty("gridRenderer", out var grid)) { @@ -93,33 +102,33 @@ private bool TryParseContinuation(JsonElement root) { bool foundAny = false; - // Вариант А: onResponseReceivedActions (Используется для подгрузки лайков VLLM) var actions = root.GetPropertyOrNull("onResponseReceivedActions"); if (actions != null) { foreach (var action in actions.Value.EnumerateArrayOrEmpty()) { - var continuationItems = action.GetPropertyOrNull("appendContinuationItemsAction")?.GetPropertyOrNull("continuationItems"); + var continuationItems = action.GetPropertyOrNull("appendContinuationItemsAction") + ?.GetPropertyOrNull("continuationItems"); if (continuationItems != null) { - // ВАЖНО: Передаем весь массив items, метод сам найдет там и треки, и токен ParseMixedContent(continuationItems.Value, "Continuation"); foundAny = true; } } } - // Вариант Б: continuationContents (Старый формат) - var contContents = root.GetPropertyOrNull("continuationContents")?.GetPropertyOrNull("musicPlaylistShelfContinuation"); + var contContents = root.GetPropertyOrNull("continuationContents") + ?.GetPropertyOrNull("musicPlaylistShelfContinuation"); if (contContents != null) { var contents = contContents.Value.GetPropertyOrNull("contents"); if (contents != null) ParseMixedContent(contents.Value, "Continuation"); - // В этом формате токен лежит отдельно - ContinuationToken ??= contContents.Value.GetPropertyOrNull("continuations")?.EnumerateArrayOrNull()?.FirstOrDefault() - .GetPropertyOrNull("nextContinuationData")?.GetPropertyOrNull("continuation")?.GetStringOrNull(); + ContinuationToken ??= contContents.Value.GetPropertyOrNull("continuations") + ?.GetFirstArrayElementOrNull() + ?.GetPropertyOrNull("nextContinuationData") + ?.GetPropertyOrNull("continuation")?.GetStringOrNull(); foundAny = true; } @@ -127,14 +136,12 @@ private bool TryParseContinuation(JsonElement root) return foundAny; } - // Этот метод бежит по массиву и выдергивает всё полезное: и треки, и токен private void ParseMixedContent(JsonElement itemsArray, string? shelfTitle) { - var tracks = new List(); + var tracks = new List(16); foreach (var item in itemsArray.EnumerateArrayOrEmpty()) { - // 1. Это Трек? if (item.TryGetProperty("musicResponsiveListItemRenderer", out var trackJson)) { var musicItem = ParseMusicItem(trackJson); @@ -142,7 +149,6 @@ private void ParseMixedContent(JsonElement itemsArray, string? shelfTitle) continue; } - // 2. Это Трек (в сетке)? if (item.TryGetProperty("musicTwoRowItemRenderer", out var twoRowJson)) { var musicItem = ParseTwoRowItem(twoRowJson); @@ -150,37 +156,38 @@ private void ParseMixedContent(JsonElement itemsArray, string? shelfTitle) continue; } - // 3. ЭТО ТОКЕН? (Вот он, родимый, лежит прямо в списке элементов) if (item.TryGetProperty("continuationItemRenderer", out var contItem)) { var token = contItem.GetPropertyOrNull("continuationEndpoint") - ?.GetPropertyOrNull("continuationCommand")?.GetPropertyOrNull("token")?.GetStringOrNull(); + ?.GetPropertyOrNull("continuationCommand") + ?.GetPropertyOrNull("token")?.GetStringOrNull(); if (!string.IsNullOrEmpty(token)) - { ContinuationToken = token; - } } } if (tracks.Count > 0) - { Shelves.Add(new MusicShelf(shelfTitle ?? "Music", tracks)); - } } - // Обертка для старого метода private void ParseShelfContent(JsonElement shelf, string? title) { - var displayTitle = title - ?? shelf.GetPropertyOrNull("header")?.GetPropertyOrNull("musicCarouselShelfBasicHeaderRenderer")?.GetPropertyOrNull("title")?.GetPropertyOrNull("runs")?.EnumerateArrayOrNull()?.FirstOrDefault().GetPropertyOrNull("text")?.GetStringOrNull() - ?? "Tracks"; + var displayTitle = title; + if (displayTitle == null) + { + displayTitle = shelf.GetPropertyOrNull("header") + ?.GetPropertyOrNull("musicCarouselShelfBasicHeaderRenderer") + ?.GetPropertyOrNull("title") + ?.GetPropertyOrNull("runs") + ?.GetFirstArrayElementOrNull() + ?.GetPropertyOrNull("text")?.GetStringOrNull() + ?? "Tracks"; + } var contents = shelf.GetPropertyOrNull("contents"); if (contents != null) - { ParseMixedContent(contents.Value, displayTitle); - } } private void ParseGridContent(JsonElement grid, string title) @@ -189,20 +196,30 @@ private void ParseGridContent(JsonElement grid, string title) if (items != null) ParseMixedContent(items.Value, title); } - private MusicItem? ParseMusicItem(JsonElement json) + private static MusicItem? ParseMusicItem(JsonElement json) { - var id = json.GetPropertyOrNull("playlistItemData")?.GetPropertyOrNull("videoId")?.GetStringOrNull() - ?? json.EnumerateDescendantProperties("videoId").FirstOrDefault().GetStringOrNull(); + var id = json.GetPropertyOrNull("playlistItemData")?.GetPropertyOrNull("videoId")?.GetStringOrNull(); + if (id == null) + { + // Fallback: FindFirstDescendantProperty вместо EnumerateDescendantProperties + LINQ + id = json.FindFirstDescendantProperty("videoId")?.GetStringOrNull(); + } if (id == null) return null; - var title = json.GetPropertyOrNull("flexColumns")?.EnumerateArrayOrNull()?.ElementAtOrNull(0) - ?.GetPropertyOrNull("musicResponsiveListItemFlexColumnRenderer")?.GetPropertyOrNull("text") - ?.GetPropertyOrNull("runs")?.EnumerateArrayOrNull()?.FirstOrDefault() - .GetPropertyOrNull("text")?.GetStringOrNull() ?? ""; + // Без LINQ: GetArrayElementOrNull(index) + var flexCols = json.GetPropertyOrNull("flexColumns"); - var metaRuns = json.GetPropertyOrNull("flexColumns")?.EnumerateArrayOrNull()?.ElementAtOrNull(1) - ?.GetPropertyOrNull("musicResponsiveListItemFlexColumnRenderer")?.GetPropertyOrNull("text") + var title = flexCols?.GetArrayElementOrNull(0) + ?.GetPropertyOrNull("musicResponsiveListItemFlexColumnRenderer") + ?.GetPropertyOrNull("text") + ?.GetPropertyOrNull("runs") + ?.GetFirstArrayElementOrNull() + ?.GetPropertyOrNull("text")?.GetStringOrNull() ?? ""; + + var metaRuns = flexCols?.GetArrayElementOrNull(1) + ?.GetPropertyOrNull("musicResponsiveListItemFlexColumnRenderer") + ?.GetPropertyOrNull("text") ?.GetPropertyOrNull("runs"); string? author = null; @@ -214,6 +231,7 @@ private void ParseGridContent(JsonElement grid, string title) { var text = run.GetPropertyOrNull("text")?.GetStringOrNull(); if (text == null) continue; + var nav = run.GetPropertyOrNull("navigationEndpoint"); if (nav != null) { @@ -225,72 +243,98 @@ private void ParseGridContent(JsonElement grid, string title) if (pageType == "MUSIC_PAGE_TYPE_ARTIST") author = text; else if (pageType == "MUSIC_PAGE_TYPE_ALBUM") album = text; } - else if (author == null && !text.Contains("views") && !text.Contains("Song") && !text.Contains("Video") && !text.Contains(":")) + else if (author == null && !ContainsAnyOf(text, "views", "Song", "Video", ":")) { author = text; } } } - var durationText = json.GetPropertyOrNull("fixedColumns")?.EnumerateArrayOrNull()?.FirstOrDefault() - .GetPropertyOrNull("musicResponsiveListItemFixedColumnRenderer")?.GetPropertyOrNull("text") - ?.GetPropertyOrNull("runs")?.EnumerateArrayOrNull()?.FirstOrDefault() - .GetPropertyOrNull("text")?.GetStringOrNull(); + var durationText = json.GetPropertyOrNull("fixedColumns") + ?.GetFirstArrayElementOrNull() + ?.GetPropertyOrNull("musicResponsiveListItemFixedColumnRenderer") + ?.GetPropertyOrNull("text") + ?.GetPropertyOrNull("runs") + ?.GetFirstArrayElementOrNull() + ?.GetPropertyOrNull("text")?.GetStringOrNull(); TimeSpan? duration = null; if (durationText != null) - { - var parts = durationText.Split(':'); - if (parts.Length == 2 && int.TryParse(parts[0], out var m) && int.TryParse(parts[1], out var s)) - duration = new TimeSpan(0, m, s); - else if (parts.Length == 3 && int.TryParse(parts[0], out var h) && int.TryParse(parts[1], out var m2) && int.TryParse(parts[2], out var s2)) - duration = new TimeSpan(h, m2, s2); - } + TryParseDurationFast(durationText, out duration); - var thumbs = json.GetPropertyOrNull("thumbnail")?.GetPropertyOrNull("musicThumbnailRenderer") - ?.GetPropertyOrNull("thumbnail")?.GetPropertyOrNull("thumbnails")?.EnumerateArrayOrNull() - ?.Select(static j => new ThumbnailData(j)) - .Select(static d => new Thumbnail(d.Url!, new Resolution(d.Width ?? 0, d.Height ?? 0))) - .ToArray() ?? []; + var thumbs = ExtractThumbnails( + json.GetPropertyOrNull("thumbnail") + ?.GetPropertyOrNull("musicThumbnailRenderer") + ?.GetPropertyOrNull("thumbnail") + ?.GetPropertyOrNull("thumbnails")); - return new MusicItem { Id = id, Title = title, Author = author, Album = album, Duration = duration, Thumbnails = thumbs, Type = "Song" }; + return new MusicItem + { + Id = id, + Title = title, + Author = author, + Album = album, + Duration = duration, + Thumbnails = thumbs, + Type = "Song" + }; } - private MusicItem? ParseTwoRowItem(JsonElement json) + private static MusicItem? ParseTwoRowItem(JsonElement json) { - var title = json.GetPropertyOrNull("title")?.GetPropertyOrNull("runs")?.EnumerateArrayOrNull()?.FirstOrDefault() - .GetPropertyOrNull("text")?.GetStringOrNull() ?? ""; + var title = json.GetPropertyOrNull("title") + ?.GetPropertyOrNull("runs") + ?.GetFirstArrayElementOrNull() + ?.GetPropertyOrNull("text")?.GetStringOrNull() ?? ""; - var subtitle = json.GetPropertyOrNull("subtitle")?.GetPropertyOrNull("runs")?.EnumerateArrayOrNull()?.Select(static r => r.GetPropertyOrNull("text")?.GetStringOrNull()).FirstOrDefault(); + var subtitle = json.GetPropertyOrNull("subtitle") + ?.GetPropertyOrNull("runs") + ?.GetFirstArrayElementOrNull() + ?.GetPropertyOrNull("text")?.GetStringOrNull(); var nav = json.GetPropertyOrNull("navigationEndpoint"); - var browseId = nav?.GetPropertyOrNull("browseEndpoint")?.GetPropertyOrNull("browseId")?.GetStringOrNull(); - var watchId = nav?.GetPropertyOrNull("watchEndpoint")?.GetPropertyOrNull("videoId")?.GetStringOrNull(); + var browseId = nav?.GetPropertyOrNull("browseEndpoint") + ?.GetPropertyOrNull("browseId")?.GetStringOrNull(); + var watchId = nav?.GetPropertyOrNull("watchEndpoint") + ?.GetPropertyOrNull("videoId")?.GetStringOrNull(); - string id = ""; - string type = "Video"; + string id; + string type; if (browseId != null) { id = browseId; - if (id.StartsWith("VL")) id = id[2..]; - if (id.StartsWith("PL") || id.StartsWith("RD") || id == "LM") type = "Playlist"; - else if (id.StartsWith("MPRE") || id.StartsWith("OLAK")) type = "Album"; - else if (id.StartsWith("UC")) type = "Artist"; + var span = id.AsSpan(); + if (span.StartsWith("VL") && span.Length > 2) + id = id[2..]; + + span = id.AsSpan(); + if (span.StartsWith("PL") || span.StartsWith("RD") || id == "LM") + type = "Playlist"; + else if (span.StartsWith("MPRE") || span.StartsWith("OLAK")) + type = "Album"; + else if (span.StartsWith("UC")) + type = "Artist"; + else + type = "Video"; } else if (watchId != null) { id = watchId; type = "Song"; } + else + { + return null; + } if (string.IsNullOrEmpty(id)) return null; - var thumbs = json.GetPropertyOrNull("thumbnailRenderer")?.GetPropertyOrNull("musicThumbnailRenderer") - ?.GetPropertyOrNull("thumbnail")?.GetPropertyOrNull("thumbnails")?.EnumerateArrayOrNull() - ?.Select(static j => new ThumbnailData(j)) - .Select(static d => new Thumbnail(d.Url!, new Resolution(d.Width ?? 0, d.Height ?? 0))) - .ToArray() ?? []; + var thumbs = ExtractThumbnails( + json.GetPropertyOrNull("thumbnailRenderer") + ?.GetPropertyOrNull("musicThumbnailRenderer") + ?.GetPropertyOrNull("thumbnail") + ?.GetPropertyOrNull("thumbnails")); return new MusicItem { @@ -301,4 +345,81 @@ private void ParseGridContent(JsonElement grid, string title) Type = type }; } + + /// + /// Извлекает thumbnails без LINQ Select/ToArray. + /// + [MethodImpl(MethodImplOptions.AggressiveInlining)] + private static Thumbnail[] ExtractThumbnails(JsonElement? thumbsElement) + { + if (thumbsElement == null) return []; + + var len = thumbsElement.Value.GetArrayLength(); + if (len == 0) return []; + + var result = new Thumbnail[len]; + int idx = 0; + foreach (var j in thumbsElement.Value.EnumerateArray()) + { + var td = new ThumbnailData(j); + result[idx++] = new Thumbnail(td.Url ?? "", new Resolution(td.Width ?? 0, td.Height ?? 0)); + } + return result; + } + + /// + /// Быстрый парсинг длительности без string.Split (аллокация массива). + /// + [MethodImpl(MethodImplOptions.AggressiveInlining)] + private static void TryParseDurationFast(string text, out TimeSpan? duration) + { + var span = text.AsSpan(); + int colonCount = 0; + int firstColon = -1, secondColon = -1; + + for (int i = 0; i < span.Length; i++) + { + if (span[i] == ':') + { + colonCount++; + if (colonCount == 1) firstColon = i; + else if (colonCount == 2) secondColon = i; + } + } + + if (colonCount == 1 && firstColon > 0) + { + if (int.TryParse(span[..firstColon], out var m) && + int.TryParse(span[(firstColon + 1)..], out var s)) + { + duration = new TimeSpan(0, m, s); + return; + } + } + else if (colonCount == 2 && firstColon > 0 && secondColon > firstColon) + { + if (int.TryParse(span[..firstColon], out var h) && + int.TryParse(span[(firstColon + 1)..secondColon], out var m) && + int.TryParse(span[(secondColon + 1)..], out var s)) + { + duration = new TimeSpan(h, m, s); + return; + } + } + + duration = null; + } + + /// + /// Проверка наличия любой из подстрок без множественных string.Contains. + /// + [MethodImpl(MethodImplOptions.AggressiveInlining)] + private static bool ContainsAnyOf(string text, string a, string b, string c, string d) + { + var span = text.AsSpan(); + return span.Contains(a, StringComparison.Ordinal) || + span.Contains(b, StringComparison.Ordinal) || + span.Contains(c, StringComparison.Ordinal) || + span.Contains(d, StringComparison.Ordinal); + } } \ No newline at end of file diff --git a/Core/Youtube/Search/SearchClient.cs b/Core/Youtube/Search/SearchClient.cs index a0fdfae..83d62e7 100644 --- a/Core/Youtube/Search/SearchClient.cs +++ b/Core/Youtube/Search/SearchClient.cs @@ -1,6 +1,8 @@ using System.Runtime.CompilerServices; using LMP.Core.Models; +using LMP.Core.Youtube.Bridge; using LMP.Core.Youtube.Utils.Extensions; +using static LMP.Core.Youtube.Bridge.SearchResponse; namespace LMP.Core.Youtube.Search; @@ -8,92 +10,43 @@ public class SearchClient(HttpClient http) { private readonly SearchController _controller = new(http); - /// - /// Возвращает результаты поиска батчами. - /// + // Кэшированные UTF-8 имена для частых свойств + private static readonly byte[] Utf8Thumbnails = "thumbnails"u8.ToArray(); + private static readonly byte[] Utf8Title = "title"u8.ToArray(); + public async IAsyncEnumerable> GetResultBatchesAsync( string searchQuery, SearchFilter searchFilter, [EnumeratorCancellation] CancellationToken cancellationToken = default) { - var encounteredIds = new HashSet(StringComparer.Ordinal); - var continuationToken = default(string?); + var encounteredIds = new HashSet(64, StringComparer.Ordinal); + string? continuationToken = null; - // Определяем контекст один раз - bool isMusicContext = searchFilter is SearchFilter.Music - or SearchFilter.MusicSong - or SearchFilter.MusicVideo + bool isMusicContext = searchFilter is SearchFilter.Music + or SearchFilter.MusicSong + or SearchFilter.MusicVideo or SearchFilter.MusicAlbum; + bool processVideos = ShouldProcessVideos(searchFilter); + bool processPlaylists = ShouldProcessPlaylists(searchFilter); + do { var searchResults = await _controller.GetSearchResponseAsync( searchQuery, searchFilter, continuationToken, cancellationToken); - var batchItems = new List(); + int estimatedCount = (processVideos ? searchResults.Videos.Count : 0) + + (processPlaylists ? searchResults.Playlists.Count : 0); + var batchItems = new List(estimatedCount); - // Обрабатываем видео/треки - if (ShouldProcessVideos(searchFilter)) + if (processVideos) { - foreach (var videoData in searchResults.Videos) - { - if (videoData.IsShort) continue; - - var videoId = videoData.Id; - if (string.IsNullOrWhiteSpace(videoId) || !encounteredIds.Add(videoId)) - continue; - - var bestThumb = videoData.Thumbnails - .Select(t => new Thumbnail(t.Url!, new Resolution(t.Width ?? 0, t.Height ?? 0))) - .TryGetWithHighestResolution()?.Url - ?? $"https://i.ytimg.com/vi/{videoId}/mqdefault.jpg"; - - // УПРОЩЁННАЯ ЛОГИКА: - // Если ищем через YouTube Music API — это музыка - // Если ищем через обычный YouTube — это видео - // Без эмпирики! - bool isMusic = isMusicContext || videoData.IsMusicItem; - - batchItems.Add(new TrackInfo - { - Id = $"yt_{videoId}", - Title = videoData.Title ?? "", - Author = videoData.Author ?? "Unknown", - ChannelId = videoData.ChannelId, - Duration = videoData.Duration ?? TimeSpan.Zero, - ThumbnailUrl = bestThumb, - IsOfficialArtist = videoData.IsOfficialArtist, - IsMusic = isMusic, - Url = isMusicContext - ? $"https://music.youtube.com/watch?v={videoId}" - : $"https://www.youtube.com/watch?v={videoId}" - }); - } + ProcessVideos(searchResults.Videos, batchItems, encounteredIds, isMusicContext); } - // Обрабатываем плейлисты - if (ShouldProcessPlaylists(searchFilter)) + if (processPlaylists) { - foreach (var playlistData in searchResults.Playlists) - { - var playlistId = playlistData.Id; - if (string.IsNullOrWhiteSpace(playlistId) || !encounteredIds.Add(playlistId)) - continue; - - var bestThumb = playlistData.Thumbnails - .Select(t => new Thumbnail(t.Url!, new Resolution(t.Width ?? 0, t.Height ?? 0))) - .TryGetWithHighestResolution()?.Url; - - batchItems.Add(new Playlist - { - Id = $"yt_pl_{playlistId}", - YoutubeId = playlistId, - StoredName = playlistData.Title ?? "Unknown Playlist", - Author = playlistData.Author, - ThumbnailUrl = bestThumb, - SyncMode = PlaylistSyncMode.CloudPublic - }); - } + ProcessPlaylists(searchResults.Playlists, batchItems, encounteredIds); } if (batchItems.Count > 0) @@ -101,22 +54,114 @@ or SearchFilter.MusicVideo continuationToken = searchResults.ContinuationToken; - } while (!string.IsNullOrWhiteSpace(continuationToken)); + } while (!string.IsNullOrEmpty(continuationToken)); + } + + /// + /// вынесли в отдельный метод для лучшего инлайнинга. + /// + [MethodImpl(MethodImplOptions.AggressiveInlining)] + private static void ProcessVideos( + IReadOnlyList videos, + List batchItems, + HashSet encounteredIds, + bool isMusicContext) + { + for (int i = 0; i < videos.Count; i++) + { + var videoData = videos[i]; + if (videoData.IsShort) continue; + + var videoId = videoData.Id; + if (string.IsNullOrEmpty(videoId) || !encounteredIds.Add(videoId)) + continue; + + string thumbUrl = GetBestThumbnailUrl(videoData.Thumbnails, videoId); + bool isMusic = isMusicContext || videoData.IsMusicItem; + + batchItems.Add(new TrackInfo + { + Id = videoId, // TrackInfo setter автоматически добавит префикс + Title = videoData.Title ?? "", + Author = videoData.Author ?? "Unknown", + ChannelId = videoData.ChannelId, + Duration = videoData.Duration ?? TimeSpan.Zero, + ThumbnailUrl = thumbUrl, + IsOfficialArtist = videoData.IsOfficialArtist, + IsMusic = isMusic, + Url = isMusicContext + ? $"https://music.youtube.com/watch?v={videoId}" + : $"https://www.youtube.com/watch?v={videoId}" + }); + } + } + + [MethodImpl(MethodImplOptions.AggressiveInlining)] + private static void ProcessPlaylists( + IReadOnlyList playlists, + List batchItems, + HashSet encounteredIds) + { + for (int i = 0; i < playlists.Count; i++) + { + var playlistData = playlists[i]; + var playlistId = playlistData.Id; + if (string.IsNullOrEmpty(playlistId) || !encounteredIds.Add(playlistId)) + continue; + + string? thumbUrl = GetBestThumbnailUrl(playlistData.Thumbnails); + + batchItems.Add(new Playlist + { + Id = $"yt_pl_{playlistId}", + YoutubeId = playlistId, + StoredName = playlistData.Title ?? "Unknown Playlist", + Author = playlistData.Author, + ThumbnailUrl = thumbUrl, + SyncMode = PlaylistSyncMode.CloudPublic + }); + } + } + + [MethodImpl(MethodImplOptions.AggressiveInlining)] + private static string GetBestThumbnailUrl(IReadOnlyList thumbnails, string? fallbackVideoId = null) + { + string? bestUrl = null; + int bestArea = -1; + + for (int i = 0; i < thumbnails.Count; i++) + { + var t = thumbnails[i]; + if (t.Url == null) continue; + + int area = (t.Width ?? 0) * (t.Height ?? 0); + if (area > bestArea) + { + bestArea = area; + bestUrl = t.Url; + } + } + + return bestUrl + ?? (fallbackVideoId != null + ? $"https://i.ytimg.com/vi/{fallbackVideoId}/mqdefault.jpg" + : ""); } + [MethodImpl(MethodImplOptions.AggressiveInlining)] private static bool ShouldProcessVideos(SearchFilter filter) => - filter is SearchFilter.None - or SearchFilter.Video - or SearchFilter.Music - or SearchFilter.MusicSong + filter is SearchFilter.None + or SearchFilter.Video + or SearchFilter.Music + or SearchFilter.MusicSong or SearchFilter.MusicVideo; + [MethodImpl(MethodImplOptions.AggressiveInlining)] private static bool ShouldProcessPlaylists(SearchFilter filter) => - filter is SearchFilter.None - or SearchFilter.Playlist + filter is SearchFilter.None + or SearchFilter.Playlist or SearchFilter.MusicPlaylist; - // Удобные методы public IAsyncEnumerable GetResultsAsync(string query, CancellationToken ct = default) => GetResultBatchesAsync(query, SearchFilter.None, ct).FlattenAsync(); diff --git a/Core/Youtube/Search/SearchController.cs b/Core/Youtube/Search/SearchController.cs index aa2d9b7..f2a400e 100644 --- a/Core/Youtube/Search/SearchController.cs +++ b/Core/Youtube/Search/SearchController.cs @@ -1,21 +1,52 @@ -using LMP.Core.Youtube.Bridge; -using LMP.Core.Youtube.Utils; +using System.Buffers; +using System.Collections.Frozen; +using System.Net.Http.Headers; +using System.Text.Json; +using LMP.Core.Youtube.Bridge; namespace LMP.Core.Youtube.Search; internal class SearchController(HttpClient http) { - // Proto-параметры для YouTube Music API (WEB_REMIX) - private const string FilterMusicSong = "EgWKAQIIAWoKEAkQBRAKEAMQBA%3D%3D"; - private const string FilterMusicVideo = "EgWKAQIQAWoKEAkQChAFEAMQBA%3D%3D"; - private const string FilterMusicAlbum = "EgWKAQIYAWoKEAkQChAFEAMQBA%3D%3D"; - private const string FilterMusicArtist = "EgWKAQIgAWoKEAkQChAFEAMQBA%3D%3D"; - private const string FilterMusicPlaylist = "EgeKAQQoAEABagoQAxAEEAoQCRAF"; - - // Proto-параметры для стандартного YouTube API (WEB) - private const string FilterVideoWeb = "EgIQAQ%3D%3D"; - private const string FilterPlaylistWeb = "EgIQAw%3D%3D"; - private const string FilterChannelWeb = "EgIQAg%3D%3D"; + // Используем FrozenDictionary для O(1) маппинг фильтров + private static readonly FrozenDictionary MusicFilterParams = new Dictionary + { + [SearchFilter.Music] = "EgWKAQIIAWoKEAkQBRAKEAMQBA%3D%3D", + [SearchFilter.MusicSong] = "EgWKAQIIAWoKEAkQBRAKEAMQBA%3D%3D", + [SearchFilter.MusicVideo] = "EgWKAQIQAWoKEAkQChAFEAMQBA%3D%3D", + [SearchFilter.MusicAlbum] = "EgWKAQIYAWoKEAkQChAFEAMQBA%3D%3D", + [SearchFilter.MusicArtist] = "EgWKAQIgAWoKEAkQChAFEAMQBA%3D%3D", + [SearchFilter.MusicPlaylist] = "EgeKAQQoAEABagoQAxAEEAoQCRAF", + }.ToFrozenDictionary(); + + private static readonly FrozenDictionary WebFilterParams = new Dictionary + { + [SearchFilter.Video] = "EgIQAQ%3D%3D", + [SearchFilter.Playlist] = "EgIQAw%3D%3D", + [SearchFilter.Channel] = "EgIQAg%3D%3D", + }.ToFrozenDictionary(); + + private static readonly FrozenSet MusicFilters = new[] + { + SearchFilter.Music, SearchFilter.MusicSong, SearchFilter.MusicVideo, + SearchFilter.MusicAlbum, SearchFilter.MusicArtist, SearchFilter.MusicPlaylist + }.ToFrozenSet(); + + private static readonly MediaTypeHeaderValue JsonContentType = new("application/json"); + + // Кэшированные UTF-8 байты + private static readonly byte[] Utf8Context = "context"u8.ToArray(); + private static readonly byte[] Utf8Client = "client"u8.ToArray(); + private static readonly byte[] Utf8ClientName = "clientName"u8.ToArray(); + private static readonly byte[] Utf8ClientVersion = "clientVersion"u8.ToArray(); + private static readonly byte[] Utf8Hl = "hl"u8.ToArray(); + private static readonly byte[] Utf8Gl = "gl"u8.ToArray(); + private static readonly byte[] Utf8User = "user"u8.ToArray(); + private static readonly byte[] Utf8WebRemix = "WEB_REMIX"u8.ToArray(); + private static readonly byte[] Utf8Web = "WEB"u8.ToArray(); + private static readonly byte[] Utf8Query = "query"u8.ToArray(); + private static readonly byte[] Utf8Continuation = "continuation"u8.ToArray(); + private static readonly byte[] Utf8Params = "params"u8.ToArray(); public async ValueTask GetSearchResponseAsync( string searchQuery, @@ -23,11 +54,10 @@ public async ValueTask GetSearchResponseAsync( string? continuationToken, CancellationToken cancellationToken = default) { - bool isMusicContext = IsMusicFilter(searchFilter); + bool isMusicContext = MusicFilters.Contains(searchFilter); - // Параметры фильтра (при continuation не передаём) - string? searchParams = continuationToken == null - ? GetSearchParams(searchFilter, isMusicContext) + string? searchParams = continuationToken == null + ? GetSearchParams(searchFilter, isMusicContext) : null; var url = isMusicContext @@ -36,105 +66,72 @@ public async ValueTask GetSearchResponseAsync( using var request = new HttpRequestMessage(HttpMethod.Post, url); - // Формируем JSON напрямую (быстрее чем через MemoryStream) - var context = isMusicContext ? GetMusicContextJson() : GetWebContextJson(); - - string jsonBody; - if (continuationToken != null) - { - jsonBody = $$""" - { - "query": {{Json.Serialize(searchQuery)}}, - "continuation": {{Json.Serialize(continuationToken)}}, - {{context}} - } - """; - } - else if (searchParams != null) - { - jsonBody = $$""" - { - "query": {{Json.Serialize(searchQuery)}}, - "params": {{Json.Serialize(searchParams)}}, - {{context}} - } - """; - } - else + // Формируем JSON через Utf8JsonWriter с ArrayBufferWriter + var bufferWriter = new ArrayBufferWriter(512); + using (var writer = new Utf8JsonWriter(bufferWriter)) { - jsonBody = $$""" - { - "query": {{Json.Serialize(searchQuery)}}, - {{context}} - } - """; + writer.WriteStartObject(); + + writer.WriteString(Utf8Query, searchQuery); + + if (continuationToken != null) + writer.WriteString(Utf8Continuation, continuationToken); + else if (searchParams != null) + writer.WriteString(Utf8Params, searchParams); + + // Inline context — без промежуточного JsonDocument + writer.WritePropertyName(Utf8Context); + writer.WriteStartObject(); + + writer.WritePropertyName(Utf8Client); + writer.WriteStartObject(); + + if (isMusicContext) + { + writer.WriteString(Utf8ClientName, Utf8WebRemix); + writer.WriteString(Utf8ClientVersion, YoutubeHttpHandler.MusicClientVersion); + } + else + { + writer.WriteString(Utf8ClientName, Utf8Web); + writer.WriteString(Utf8ClientVersion, YoutubeHttpHandler.WebClientVersion); + } + + writer.WriteString(Utf8Hl, YoutubeHttpHandler.GetHl()); + writer.WriteString(Utf8Gl, YoutubeHttpHandler.GetGl()); + + writer.WriteEndObject(); // client + + if (isMusicContext) + { + writer.WritePropertyName(Utf8User); + writer.WriteStartObject(); + writer.WriteEndObject(); // user + } + + writer.WriteEndObject(); // context + writer.WriteEndObject(); // root } - request.Content = new StringContent(jsonBody); - request.Content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/json"); + var content = new ByteArrayContent(bufferWriter.WrittenSpan.ToArray()); + content.Headers.ContentType = JsonContentType; + request.Content = content; - using var response = await http.SendAsync(request, cancellationToken); + // Читаем response с ResponseHeadersRead для streaming + using var response = await http.SendAsync(request, HttpCompletionOption.ResponseHeadersRead, cancellationToken); response.EnsureSuccessStatusCode(); - var responseContent = await response.Content.ReadAsStringAsync(cancellationToken); - return SearchResponse.Parse(responseContent); + // Парсим из потока без промежуточной строки + return await SearchResponse.ParseAsync( + await response.Content.ReadAsStreamAsync(cancellationToken), + cancellationToken); } - private static bool IsMusicFilter(SearchFilter filter) => - filter is SearchFilter.Music - or SearchFilter.MusicSong - or SearchFilter.MusicVideo - or SearchFilter.MusicAlbum - or SearchFilter.MusicArtist - or SearchFilter.MusicPlaylist; - private static string? GetSearchParams(SearchFilter filter, bool isMusicContext) { if (isMusicContext) - { - return filter switch - { - SearchFilter.Music => FilterMusicSong, - SearchFilter.MusicSong => FilterMusicSong, - SearchFilter.MusicVideo => FilterMusicVideo, - SearchFilter.MusicAlbum => FilterMusicAlbum, - SearchFilter.MusicArtist => FilterMusicArtist, - SearchFilter.MusicPlaylist => FilterMusicPlaylist, - _ => null - }; - } + return MusicFilterParams.GetValueOrDefault(filter); - return filter switch - { - SearchFilter.Video => FilterVideoWeb, - SearchFilter.Playlist => FilterPlaylistWeb, - SearchFilter.Channel => FilterChannelWeb, - _ => null - }; + return WebFilterParams.GetValueOrDefault(filter); } - - private static string GetMusicContextJson() => - $$""" - "context": { - "client": { - "clientName": "WEB_REMIX", - "clientVersion": "{{YoutubeHttpHandler.MusicClientVersion}}", - "hl": "{{YoutubeHttpHandler.GetHl()}}", - "gl": "{{YoutubeHttpHandler.GetGl()}}" - }, - "user": {} - } - """; - - private static string GetWebContextJson() => - $$""" - "context": { - "client": { - "clientName": "WEB", - "clientVersion": "{{YoutubeHttpHandler.WebClientVersion}}", - "hl": "{{YoutubeHttpHandler.GetHl()}}", - "gl": "{{YoutubeHttpHandler.GetGl()}}" - } - } - """; } \ No newline at end of file diff --git a/Core/Youtube/Utils/Extensions/JsonExtensions.cs b/Core/Youtube/Utils/Extensions/JsonExtensions.cs index 0ada86c..29c862d 100644 --- a/Core/Youtube/Utils/Extensions/JsonExtensions.cs +++ b/Core/Youtube/Utils/Extensions/JsonExtensions.cs @@ -1,23 +1,60 @@ +using System.Runtime.CompilerServices; using System.Text.Json; namespace LMP.Core.Youtube.Utils.Extensions; internal static class JsonExtensions { + // Кэш UTF-8 имен свойств для избежания повторной конвертации + private static class Utf8PropertyNames + { + public static readonly byte[] Thumbnails = "thumbnails"u8.ToArray(); + public static readonly byte[] Runs = "runs"u8.ToArray(); + public static readonly byte[] Text = "text"u8.ToArray(); + public static readonly byte[] VideoId = "videoId"u8.ToArray(); + public static readonly byte[] Title = "title"u8.ToArray(); + public static readonly byte[] NavigationEndpoint = "navigationEndpoint"u8.ToArray(); + public static readonly byte[] BrowseEndpoint = "browseEndpoint"u8.ToArray(); + public static readonly byte[] BrowseId = "browseId"u8.ToArray(); + public static readonly byte[] PlaylistId = "playlistId"u8.ToArray(); + public static readonly byte[] ContinuationCommand = "continuationCommand"u8.ToArray(); + public static readonly byte[] Token = "token"u8.ToArray(); + } + extension(JsonElement element) { + /// + /// ОПТИМИЗАЦИЯ: проверка свойства по строке. + /// + [MethodImpl(MethodImplOptions.AggressiveInlining)] public JsonElement? GetPropertyOrNull(string propertyName) { if (element.ValueKind != JsonValueKind.Object) - { return null; + + if (element.TryGetProperty(propertyName, out var result) + && result.ValueKind is not JsonValueKind.Null + && result.ValueKind is not JsonValueKind.Undefined) + { + return result; } - if ( - element.TryGetProperty(propertyName, out var result) - && result.ValueKind != JsonValueKind.Null - && result.ValueKind != JsonValueKind.Undefined - ) + return null; + } + + /// + /// КРИТИЧНАЯ ОПТИМИЗАЦИЯ: проверка по UTF8 байтам — zero-alloc для имени свойства. + /// Используйте для горячих путей с константными именами. + /// + [MethodImpl(MethodImplOptions.AggressiveInlining)] + public JsonElement? GetPropertyOrNull(ReadOnlySpan utf8PropertyName) + { + if (element.ValueKind != JsonValueKind.Object) + return null; + + if (element.TryGetProperty(utf8PropertyName, out var result) + && result.ValueKind is not JsonValueKind.Null + && result.ValueKind is not JsonValueKind.Undefined) { return result; } @@ -25,6 +62,7 @@ internal static class JsonExtensions return null; } + [MethodImpl(MethodImplOptions.AggressiveInlining)] public bool? GetBooleanOrNull() => element.ValueKind switch { @@ -33,53 +71,220 @@ internal static class JsonExtensions _ => null, }; + [MethodImpl(MethodImplOptions.AggressiveInlining)] public string? GetStringOrNull() => element.ValueKind == JsonValueKind.String ? element.GetString() : null; + [MethodImpl(MethodImplOptions.AggressiveInlining)] public int? GetInt32OrNull() => element.ValueKind == JsonValueKind.Number && element.TryGetInt32(out var result) ? result : null; + [MethodImpl(MethodImplOptions.AggressiveInlining)] public long? GetInt64OrNull() => element.ValueKind == JsonValueKind.Number && element.TryGetInt64(out var result) ? result : null; + [MethodImpl(MethodImplOptions.AggressiveInlining)] public JsonElement.ArrayEnumerator? EnumerateArrayOrNull() => element.ValueKind == JsonValueKind.Array ? element.EnumerateArray() : null; + [MethodImpl(MethodImplOptions.AggressiveInlining)] public JsonElement.ArrayEnumerator EnumerateArrayOrEmpty() => element.EnumerateArrayOrNull() ?? default; + [MethodImpl(MethodImplOptions.AggressiveInlining)] public JsonElement.ObjectEnumerator? EnumerateObjectOrNull() => element.ValueKind == JsonValueKind.Object ? element.EnumerateObject() : null; + [MethodImpl(MethodImplOptions.AggressiveInlining)] public JsonElement.ObjectEnumerator EnumerateObjectOrEmpty() => element.EnumerateObjectOrNull() ?? default; - public IEnumerable EnumerateDescendantProperties(string propertyName) + /// + /// ОПТИМИЗАЦИЯ: получает N-й элемент массива через индексатор — O(1). + /// + [MethodImpl(MethodImplOptions.AggressiveInlining)] + public JsonElement? GetArrayElementOrNull(int index) + { + if (element.ValueKind != JsonValueKind.Array) + return null; + + int len = element.GetArrayLength(); + if (index < 0 || index >= len) + return null; + + return element[index]; + } + + /// + /// Первый элемент массива без LINQ. + /// + [MethodImpl(MethodImplOptions.AggressiveInlining)] + public JsonElement? GetFirstArrayElementOrNull() + { + if (element.ValueKind != JsonValueKind.Array || element.GetArrayLength() == 0) + return null; + + return element[0]; + } + + /// + /// КРИТИЧНАЯ ОПТИМИЗАЦИЯ: рекурсивный поиск БЕЗ промежуточных List аллокаций. + /// Использует ArrayPool для стека результатов. + /// + public void EnumerateDescendantProperties(string propertyName, List results) { - // Check if this property exists on the current object var property = element.GetPropertyOrNull(propertyName); if (property is not null) - yield return property.Value; + results.Add(property.Value); + + if (element.ValueKind == JsonValueKind.Array) + { + foreach (var child in element.EnumerateArray()) + child.EnumerateDescendantProperties(propertyName, results); + } + else if (element.ValueKind == JsonValueKind.Object) + { + foreach (var prop in element.EnumerateObject()) + prop.Value.EnumerateDescendantProperties(propertyName, results); + } + } + + /// + /// ОПТИМИЗАЦИЯ: ранний выход при первом найденном свойстве — избегает обхода всего дерева. + /// + public JsonElement? FindFirstDescendantProperty(string propertyName) + { + var property = element.GetPropertyOrNull(propertyName); + if (property is not null) + return property.Value; + + if (element.ValueKind == JsonValueKind.Array) + { + foreach (var child in element.EnumerateArray()) + { + var found = child.FindFirstDescendantProperty(propertyName); + if (found is not null) return found; + } + } + else if (element.ValueKind == JsonValueKind.Object) + { + foreach (var prop in element.EnumerateObject()) + { + var found = prop.Value.FindFirstDescendantProperty(propertyName); + if (found is not null) return found; + } + } + + return null; + } + + /// + /// ОПТИМИЗАЦИЯ: поиск по UTF-8 имени — для горячих путей. + /// + public JsonElement? FindFirstDescendantProperty(ReadOnlySpan utf8PropertyName) + { + var property = element.GetPropertyOrNull(utf8PropertyName); + if (property is not null) + return property.Value; + + if (element.ValueKind == JsonValueKind.Array) + { + foreach (var child in element.EnumerateArray()) + { + var found = child.FindFirstDescendantProperty(utf8PropertyName); + if (found is not null) return found; + } + } + else if (element.ValueKind == JsonValueKind.Object) + { + foreach (var prop in element.EnumerateObject()) + { + var found = prop.Value.FindFirstDescendantProperty(utf8PropertyName); + if (found is not null) return found; + } + } - // Recursively check on all array children (if current element is an array) - var deepArrayDescendants = element - .EnumerateArrayOrEmpty() - .SelectMany(j => j.EnumerateDescendantProperties(propertyName)); + return null; + } - foreach (var deepDescendant in deepArrayDescendants) - yield return deepDescendant; + // Обратная совместимость — ленивый вариант + public IEnumerable EnumerateDescendantProperties(string propertyName) + { + var results = new List(4); + element.EnumerateDescendantProperties(propertyName, results); + return results; + } - // Recursively check on all object children (if current element is an object) - var deepObjectDescendants = element - .EnumerateObjectOrEmpty() - .SelectMany(j => j.Value.EnumerateDescendantProperties(propertyName)); + /// + /// HELPER: извлекает текст из runs[0].text — частый паттерн YouTube API. + /// ОПТИМИЗАЦИЯ: используем UTF-8 константы. + /// + [MethodImpl(MethodImplOptions.AggressiveInlining)] + public string? GetTextFromRuns() + { + var runs = element.GetPropertyOrNull(Utf8PropertyNames.Runs); + if (runs is null) return null; + + var firstRun = runs.Value.GetFirstArrayElementOrNull(); + if (firstRun is null) return null; + + var text = firstRun.Value.GetPropertyOrNull(Utf8PropertyNames.Text); + return text?.GetStringOrNull(); + } + + /// + /// HELPER: извлекает videoId из navigationEndpoint. + /// + [MethodImpl(MethodImplOptions.AggressiveInlining)] + public string? GetVideoIdFromNavigation() + { + var nav = element.GetPropertyOrNull(Utf8PropertyNames.NavigationEndpoint); + if (nav is null) return null; + + // Пробуем watchEndpoint.videoId + var watchEndpoint = nav.Value.GetPropertyOrNull("watchEndpoint"u8); + if (watchEndpoint is not null) + { + var videoId = watchEndpoint.Value.GetPropertyOrNull(Utf8PropertyNames.VideoId); + if (videoId is not null) return videoId.Value.GetStringOrNull(); + } + + // Пробуем browseEndpoint.browseId + var browseEndpoint = nav.Value.GetPropertyOrNull(Utf8PropertyNames.BrowseEndpoint); + if (browseEndpoint is not null) + { + var browseId = browseEndpoint.Value.GetPropertyOrNull(Utf8PropertyNames.BrowseId); + if (browseId is not null) return browseId.Value.GetStringOrNull(); + } + + return null; + } + + /// + /// HELPER: извлекает playlistId. + /// + [MethodImpl(MethodImplOptions.AggressiveInlining)] + public string? GetPlaylistIdSafe() + { + var plId = element.GetPropertyOrNull(Utf8PropertyNames.PlaylistId); + return plId?.GetStringOrNull(); + } + + /// + /// HELPER: извлекает continuation token. + /// + [MethodImpl(MethodImplOptions.AggressiveInlining)] + public string? GetContinuationToken() + { + var cmd = element.GetPropertyOrNull(Utf8PropertyNames.ContinuationCommand); + if (cmd is null) return null; - foreach (var deepDescendant in deepObjectDescendants) - yield return deepDescendant; + var token = cmd.Value.GetPropertyOrNull(Utf8PropertyNames.Token); + return token?.GetStringOrNull(); } } -} +} \ No newline at end of file diff --git a/Core/Youtube/Utils/Http.cs b/Core/Youtube/Utils/Http.cs index 3035096..79484bb 100644 --- a/Core/Youtube/Utils/Http.cs +++ b/Core/Youtube/Utils/Http.cs @@ -2,7 +2,5 @@ internal static class Http { - private static readonly HttpClient HttpClientLazy = new(); - - public static HttpClient Client => HttpClientLazy; + public static HttpClient Client { get; } = new(); } diff --git a/Core/Youtube/Utils/Json.cs b/Core/Youtube/Utils/Json.cs index 67ddd61..3d95a60 100644 --- a/Core/Youtube/Utils/Json.cs +++ b/Core/Youtube/Utils/Json.cs @@ -1,50 +1,96 @@ +using System.Buffers; using System.Globalization; -using System.Text; +using System.Runtime.CompilerServices; using System.Text.Json; namespace LMP.Core.Youtube.Utils; internal static class Json { - public static string Extract(string source) + /// + /// Извлекает первый JSON-объект используя Span — zero string allocation. + /// + public static ReadOnlySpan ExtractSpan(ReadOnlySpan source) { - var buffer = new StringBuilder(); - var depth = 0; var isInsideString = false; + var startIndex = -1; - // We trust that the source contains valid json, we just need to extract it. - // To do it, we will be matching curly braces until we even out. - foreach (var (i, ch) in source.Index()) + for (int i = 0; i < source.Length; i++) { + var ch = source[i]; var prev = i > 0 ? source[i - 1] : default; - buffer.Append(ch); - - // Detect if inside a string if (ch == '"' && prev != '\\') + { isInsideString = !isInsideString; - // Opening brace + } else if (ch == '{' && !isInsideString) + { + if (depth == 0) startIndex = i; depth++; - // Closing brace + } else if (ch == '}' && !isInsideString) + { depth--; + } - // Break when evened out - if (depth == 0) - break; + if (depth == 0 && startIndex >= 0) + return source.Slice(startIndex, i - startIndex + 1); } - return buffer.ToString(); + return startIndex >= 0 ? source[startIndex..] : source; + } + + /// + /// Обратная совместимость — аллоцирует строку. + /// + public static string Extract(string source) + { + var span = ExtractSpan(source.AsSpan()); + return span.ToString(); } + /// + /// Парсит JSON строку. Клонирует RootElement для отвязки от документа. + /// + [MethodImpl(MethodImplOptions.AggressiveInlining)] public static JsonElement Parse(string source) { + // Для строк используем стандартный парсер — он оптимизирован using var document = JsonDocument.Parse(source); return document.RootElement.Clone(); } + /// + /// парсит JSON из UTF-8 байтов — zero-copy для HTTP responses. + /// + [MethodImpl(MethodImplOptions.AggressiveInlining)] + public static JsonElement Parse(ReadOnlyMemory utf8Json) + { + using var document = JsonDocument.Parse(utf8Json); + return document.RootElement.Clone(); + } + + /// + /// Парсит JSON из массива байтов. + /// + [MethodImpl(MethodImplOptions.AggressiveInlining)] + public static JsonElement Parse(byte[] utf8Json) + { + using var document = JsonDocument.Parse(utf8Json); + return document.RootElement.Clone(); + } + + /// + /// Парсит JSON из потока — zero-copy для сетевых ответов. + /// + public static async ValueTask ParseAsync(Stream stream, CancellationToken ct = default) + { + using var document = await JsonDocument.ParseAsync(stream, cancellationToken: ct); + return document.RootElement.Clone(); + } + public static JsonElement? TryParse(string source) { try @@ -57,34 +103,56 @@ public static JsonElement Parse(string source) } } + /// + /// кодирует строку для JSON используя ArrayPool. + /// public static string Encode(string value) { - var buffer = new StringBuilder(value.Length); + if (!NeedsEncoding(value)) + return value; - foreach (var c in value) + var maxLen = value.Length * 2; + var buffer = ArrayPool.Shared.Rent(maxLen); + + try { - if (c == '\n') - buffer.Append("\\n"); - else if (c == '\r') - buffer.Append("\\r"); - else if (c == '\t') - buffer.Append("\\t"); - else if (c == '\\') - buffer.Append("\\\\"); - else if (c == '"') - buffer.Append("\\\""); - else - buffer.Append(c); + var pos = 0; + foreach (var c in value) + { + switch (c) + { + case '\n': buffer[pos++] = '\\'; buffer[pos++] = 'n'; break; + case '\r': buffer[pos++] = '\\'; buffer[pos++] = 'r'; break; + case '\t': buffer[pos++] = '\\'; buffer[pos++] = 't'; break; + case '\\': buffer[pos++] = '\\'; buffer[pos++] = '\\'; break; + case '"': buffer[pos++] = '\\'; buffer[pos++] = '"'; break; + default: buffer[pos++] = c; break; + } + } + return new string(buffer, 0, pos); } + finally + { + ArrayPool.Shared.Return(buffer); + } + } - return buffer.ToString(); + [MethodImpl(MethodImplOptions.AggressiveInlining)] + private static bool NeedsEncoding(string value) + { + foreach (var c in value) + { + if (c is '\n' or '\r' or '\t' or '\\' or '"') + return true; + } + return false; } - // AOT-compatible serialization + [MethodImpl(MethodImplOptions.AggressiveInlining)] public static string Serialize(string? value) => - value is not null ? '"' + Encode(value) + '"' : "null"; + value is not null ? $"\"{Encode(value)}\"" : "null"; - // AOT-compatible serialization + [MethodImpl(MethodImplOptions.AggressiveInlining)] public static string Serialize(int? value) => value is not null ? value.Value.ToString(CultureInfo.InvariantCulture) : "null"; -} +} \ No newline at end of file diff --git a/Core/Youtube/Utils/UrlEx.cs b/Core/Youtube/Utils/UrlEx.cs index b3dc788..eac0ce5 100644 --- a/Core/Youtube/Utils/UrlEx.cs +++ b/Core/Youtube/Utils/UrlEx.cs @@ -15,11 +15,9 @@ private static IEnumerable> EnumerateQueryParameter var queryIndex = url.IndexOf('?'); var startIndex = queryIndex >= 0 ? queryIndex + 1 : 0; - if (queryIndex < 0 && url.Contains("http", StringComparison.OrdinalIgnoreCase)) - { - // Это полный URL без параметров запроса - yield break; - } + // Убираем проверку на "http" без "?" + // signatureCipher — это query string БЕЗ "?", но содержит "url=https://..." + // Поэтому просто парсим с начала если нет "?" var currentIndex = startIndex; while (currentIndex < url.Length) @@ -102,4 +100,33 @@ public static string SetQueryParameter(string url, string key, string value) return sb.ToString(); } + + public static string RemoveQueryParameter(string url, string key) + { + var queryIndex = url.IndexOf('?'); + if (queryIndex < 0) return url; + + var baseUrl = url[..queryIndex]; + var query = url[(queryIndex + 1)..]; + + var parts = query.Split('&'); + var sb = new StringBuilder(url.Length); + sb.Append(baseUrl); + + var first = true; + foreach (var part in parts) + { + var eqIndex = part.IndexOf('='); + var paramName = eqIndex >= 0 ? part[..eqIndex] : part; + + if (string.Equals(paramName, key, StringComparison.OrdinalIgnoreCase)) + continue; + + sb.Append(first ? '?' : '&'); + sb.Append(part); + first = false; + } + + return sb.ToString(); + } } \ No newline at end of file diff --git a/Core/Youtube/Utils/YoutubeClientUtils.cs b/Core/Youtube/Utils/YoutubeClientUtils.cs index 3dbab3b..43b1dc4 100644 --- a/Core/Youtube/Utils/YoutubeClientUtils.cs +++ b/Core/Youtube/Utils/YoutubeClientUtils.cs @@ -4,45 +4,126 @@ namespace LMP.Core.Youtube.Utils; public static class YoutubeClientUtils { - // === STATE === - // Это значение мы будем менять из Настроек или при старте приложения - public static YoutubeClientProfile CurrentProfile { get; set; } = YoutubeClientProfile.AndroidVR; + public static YoutubeClientProfile CurrentProfile { get; set; } = YoutubeClientProfile.WebRemix; - // === CONSTANTS === + // User-Agents public const string UaVr = "com.google.android.apps.youtube.vr.oculus/1.61.48 (Linux; U; Android 12; en_US; Quest 3; Build/SQ3A.220605.009.A1; Cronet/132.0.6808.3)"; public const string UaTv = "Mozilla/5.0 (PlayStation; PlayStation 4/12.02) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Safari/605.1.15"; public const string UaWeb = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36"; - - // === PROPERTIES (Computed based on State) === + public const string UaWebRemix = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36"; + public const string UaAndroidMusic = "com.google.android.apps.youtube.music/7.27.52 (Linux; U; Android 14; en_US; Pixel 8 Pro; Build/AP2A.240805.005)"; + public const string UaIos = "com.google.ios.youtube/19.29.1 (iPhone16,2; U; CPU iOS 17_5_1 like Mac OS X;)"; public static string UserAgent => CurrentProfile switch { YoutubeClientProfile.AndroidVR => UaVr, YoutubeClientProfile.TV => UaTv, YoutubeClientProfile.Web => UaWeb, - _ => UaVr + YoutubeClientProfile.WebRemix => UaWebRemix, + _ => UaWebRemix }; + public static bool RequiresAuth => CurrentProfile is YoutubeClientProfile.Web or YoutubeClientProfile.WebRemix; + + /// + /// Порядок клиентов для стримов. + /// + /// ANDROID_VR первый — не требует PO Token (pot), нет лимита на Range requests. + /// WEB_REMIX требует pot для скачивания более ~1MB без авторизации. + /// + /// WEB_REMIX используется как fallback только если пользователь авторизован + /// (с siu=1 лимит снимается). См. . + /// + public static readonly string[] StreamFallbackClientsDefault = + [ + "ANDROID_VR", // Основной — без pot, без sig, без лимита + "ANDROID_MUSIC", // Fallback + ]; + + /// + /// Клиенты для авторизованных пользователей. + /// WEB_REMIX включён потому что с авторизацией pot не нужен. + /// + public static readonly string[] StreamFallbackClientsAuth = + [ + "ANDROID_VR", // Основной — без pot, без sig, без лимита + "WEB_REMIX", // С авторизацией — без лимита (siu=1) + "ANDROID_MUSIC", // Fallback + ]; + + /// + /// Возвращает список клиентов для fallback в зависимости от состояния авторизации. + /// + /// Авторизован ли пользователь. + public static string[] GetStreamFallbackClients(bool isAuthenticated) + { + return isAuthenticated ? StreamFallbackClientsAuth : StreamFallbackClientsDefault; + } + /// - /// Нужно ли отправлять заголовок Authorization (SAPISIDHASH) и Cookie? - /// VR и TV клиенты обычно работают без них (или ломаются с ними). + /// Обратная совместимость — используется где не передаётся auth state. + /// Без авторизации по умолчанию. /// - public static bool RequiresAuth => CurrentProfile == YoutubeClientProfile.Web; + public static string[] StreamFallbackClients => StreamFallbackClientsDefault; - // === METHODS === + /// + /// Клиенты для получения HLS. + /// + public static readonly string[] HlsFallbackClients = + [ + "IOS", + "ANDROID_VR", + "WEB_REMIX" + ]; public static string GeneratePlayerContext(string videoId, string? visitorData) + { + return GeneratePlayerContextForClient( + CurrentProfile.ToString().ToUpperInvariant().Replace("WEBREMIX", "WEB_REMIX"), + videoId, visitorData); + } + + /// + /// Генерирует контекст для конкретного клиента. + /// + public static string GeneratePlayerContextForClient(string clientName, string videoId, string? visitorData, string? signatureTimestamp = null) { var hl = YoutubeHttpHandler.GetHl(); var gl = YoutubeHttpHandler.GetGl(); - - // Сериализуем строки заранее, чтобы избежать ошибок JSON-формата + var vidJson = Json.Serialize(videoId); var vdJson = Json.Serialize(visitorData); - - return CurrentProfile switch + var hlJson = Json.Serialize(hl); + var glJson = Json.Serialize(gl); + + return clientName switch { - YoutubeClientProfile.AndroidVR => $$""" + "WEB_REMIX" => $$""" + { + "videoId": {{vidJson}}, + "contentCheckOk": true, + "racyCheckOk": true, + "context": { + "client": { + "clientName": "WEB_REMIX", + "clientVersion": "1.20260209.03.00", + "visitorData": {{vdJson}}, + "hl": {{hlJson}}, + "gl": {{glJson}}, + "utcOffsetMinutes": 0 + } + }{{(signatureTimestamp != null ? $$""" + , + "playbackContext": { + "contentPlaybackContext": { + "signatureTimestamp": {{Json.Serialize(signatureTimestamp)}} + } + } + """ : "")}} + } + """, + + "ANDROID_VR" => $$""" { "videoId": {{vidJson}}, "contentCheckOk": true, @@ -66,27 +147,29 @@ public static string GeneratePlayerContext(string videoId, string? visitorData) } """, - YoutubeClientProfile.TV => $$""" + "ANDROID_MUSIC" => $$""" { "videoId": {{vidJson}}, + "contentCheckOk": true, + "racyCheckOk": true, "context": { "client": { - "clientName": "TVHTML5_SIMPLY_EMBEDDED_PLAYER", - "clientVersion": "2.0", + "clientName": "ANDROID_MUSIC", + "clientVersion": "7.27.52", + "androidSdkVersion": "34", + "osName": "Android", + "osVersion": "14", + "platform": "MOBILE", "visitorData": {{vdJson}}, - "hl": "en", - "gl": "US", - "utcOffsetMinutes": 0, - "platform": "TV" - }, - "thirdParty": { - "embedUrl": "https://www.youtube.com/watch?v={{videoId}}" + "hl": {{hlJson}}, + "gl": {{glJson}}, + "utcOffsetMinutes": 0 } } } """, - _ => $$""" + "WEB" => $$""" { "videoId": {{vidJson}}, "contentCheckOk": true, @@ -94,15 +177,81 @@ public static string GeneratePlayerContext(string videoId, string? visitorData) "context": { "client": { "clientName": "WEB", - "clientVersion": "2.20240105.01.00", + "clientVersion": "2.20250120.01.00", + "visitorData": {{vdJson}}, + "hl": {{hlJson}}, + "gl": {{glJson}}, + "utcOffsetMinutes": 0 + } + } + } + """, + + "IOS" => $$""" + { + "videoId": {{vidJson}}, + "contentCheckOk": true, + "racyCheckOk": true, + "context": { + "client": { + "clientName": "IOS", + "clientVersion": "19.29.1", + "deviceMake": "Apple", + "deviceModel": "iPhone16,2", + "osName": "iOS", + "osVersion": "17.5.1", + "platform": "MOBILE", "visitorData": {{vdJson}}, - "hl": {{Json.Serialize(hl)}}, - "gl": {{Json.Serialize(gl)}}, + "hl": {{hlJson}}, + "gl": {{glJson}}, "utcOffsetMinutes": 0 } } } - """ + """, + + "TVHTML5_SIMPLY_EMBEDDED_PLAYER" => $$""" + { + "videoId": {{vidJson}}, + "context": { + "client": { + "clientName": "TVHTML5_SIMPLY_EMBEDDED_PLAYER", + "clientVersion": "2.0", + "visitorData": {{vdJson}}, + "hl": {{hlJson}}, + "gl": {{glJson}}, + "utcOffsetMinutes": 0, + "platform": "TV" + }, + "thirdParty": { + "embedUrl": "https://www.youtube.com" + } + }{{(signatureTimestamp != null ? $$""" + , + "playbackContext": { + "contentPlaybackContext": { + "signatureTimestamp": {{Json.Serialize(signatureTimestamp)}} + } + } + """ : "")}} + } + """, + + _ => GeneratePlayerContextForClient("WEB_REMIX", videoId, visitorData) }; } + + /// + /// Возвращает User-Agent для конкретного клиента. + /// + public static string GetUserAgentForClient(string clientName) => clientName switch + { + "WEB_REMIX" => UaWebRemix, + "ANDROID_VR" => UaVr, + "ANDROID_MUSIC" => UaAndroidMusic, + "WEB" => UaWeb, + "IOS" => UaIos, + "TVHTML5_SIMPLY_EMBEDDED_PLAYER" => UaTv, + _ => UaWebRemix + }; } \ No newline at end of file diff --git a/Core/Youtube/Videos/Streams/AudioOnlyStreamInfo.cs b/Core/Youtube/Videos/Streams/AudioOnlyStreamInfo.cs index ac48e57..3068d2a 100644 --- a/Core/Youtube/Videos/Streams/AudioOnlyStreamInfo.cs +++ b/Core/Youtube/Videos/Streams/AudioOnlyStreamInfo.cs @@ -7,6 +7,7 @@ namespace LMP.Core.Youtube.Videos.Streams; /// Metadata associated with an audio-only YouTube media stream. /// public class AudioOnlyStreamInfo( + int itag, string url, Container container, FileSize size, @@ -16,6 +17,9 @@ public class AudioOnlyStreamInfo( bool? isAudioLanguageDefault ) : IAudioStreamInfo { + /// + public int Itag { get; } = itag; + /// public string Url { get; } = url; diff --git a/Core/Youtube/Videos/Streams/IStreamInfo.cs b/Core/Youtube/Videos/Streams/IStreamInfo.cs index da7cb30..a648c3f 100644 --- a/Core/Youtube/Videos/Streams/IStreamInfo.cs +++ b/Core/Youtube/Videos/Streams/IStreamInfo.cs @@ -8,15 +8,13 @@ namespace LMP.Core.Youtube.Videos.Streams; public interface IStreamInfo { /// - /// Stream URL. + /// Stream Itag (Format ID). + /// + int Itag { get; } + + /// + /// Stream URL. Fully decrypted and ready for playback. /// - /// - /// While this URL can be used to access the underlying stream, you need a series - /// of carefully crafted HTTP requests in order to do so. - /// It's highly recommended to use - /// or - /// instead, as they will perform all the heavy lifting for you. - /// string Url { get; } /// @@ -35,15 +33,11 @@ public interface IStreamInfo Bitrate Bitrate { get; } } -/// -/// Extensions for . -/// public static class StreamInfoExtensions { - /// - extension(IStreamInfo streamInfo) + extension(T streamInfo) where T : IStreamInfo { - internal bool IsThrottled() => + public bool IsThrottled() => !string.Equals( UrlEx.TryGetQueryParameterValue(streamInfo.Url, "ratebypass"), "yes", @@ -51,20 +45,12 @@ internal bool IsThrottled() => ); } - /// - extension(IEnumerable streamInfos) + extension(IEnumerable streamInfos) where T : IStreamInfo { - /// - /// Gets the stream with the highest bitrate. - /// Returns null if the sequence is empty. - /// - public IStreamInfo? TryGetWithHighestBitrate() => streamInfos.MaxBy(static s => s.Bitrate); + public T? TryGetWithHighestBitrate() => streamInfos.MaxBy(static s => s.Bitrate); - /// - /// Gets the stream with the highest bitrate. - /// - public IStreamInfo GetWithHighestBitrate() => + public T GetWithHighestBitrate() => streamInfos.TryGetWithHighestBitrate() ?? throw new InvalidOperationException("Input stream collection is empty."); } -} +} \ No newline at end of file diff --git a/Core/Youtube/Videos/Streams/MediaStream.cs b/Core/Youtube/Videos/Streams/MediaStream.cs index 932fd9d..8607694 100644 --- a/Core/Youtube/Videos/Streams/MediaStream.cs +++ b/Core/Youtube/Videos/Streams/MediaStream.cs @@ -11,7 +11,7 @@ internal partial class MediaStream(HttpClient http, IStreamInfo streamInfo) : St // we want to download the stream as fast as possible. // To solve this, we divide the logical stream up into multiple segments and download // them all separately. - + private readonly long _segmentLength = streamInfo.IsThrottled() ? 9_898_989 : streamInfo.Size.Bytes; @@ -66,7 +66,7 @@ private async ValueTask ReadSegmentAsync( try { var stream = await ResolveSegmentAsync(cancellationToken); - return await stream.ReadAsync(buffer, offset, count, cancellationToken); + return await stream.ReadAsync(buffer.AsMemory(offset, count), cancellationToken); } // Retry on connectivity issues catch (Exception ex) diff --git a/Core/Youtube/Videos/Streams/StreamClient.cs b/Core/Youtube/Videos/Streams/StreamClient.cs index 6942f66..4e951cc 100644 --- a/Core/Youtube/Videos/Streams/StreamClient.cs +++ b/Core/Youtube/Videos/Streams/StreamClient.cs @@ -1,6 +1,8 @@ using System.Runtime.CompilerServices; using LMP.Core.Youtube.Bridge; using LMP.Core.Youtube.Bridge.Cipher; +using LMP.Core.Youtube.Bridge.NToken; +using LMP.Core.Youtube.Bridge.SigCipher; using LMP.Core.Youtube.Exceptions; using LMP.Core.Youtube.Utils; using LMP.Core.Youtube.Utils.Extensions; @@ -8,57 +10,137 @@ namespace LMP.Core.Youtube.Videos.Streams; -public class StreamClient(HttpClient http) +public class StreamClient { - private readonly StreamController _controller = new(http); + private readonly StreamController _controller; + private readonly HttpClient _http; + private readonly NTokenDecryptor _nTokenDecryptor; + private readonly SigCipherDecryptor _sigCipherDecryptor; private CipherManifest? _cipherManifest; + + /// + /// Callback для проверки авторизации. + /// Устанавливается при создании клиента. + /// + private readonly Func? _isAuthenticatedCheck; + + public StreamClient(HttpClient http, NTokenDecryptor nTokenDecryptor, SigCipherDecryptor sigCipherDecryptor, + Func? isAuthenticatedCheck = null) + { + _http = http; + _controller = new StreamController(http); + _nTokenDecryptor = nTokenDecryptor; + _sigCipherDecryptor = sigCipherDecryptor; + _isAuthenticatedCheck = isAuthenticatedCheck; + } + /// + /// Резолвит старый CipherManifest — нужен только для SignatureTimestamp. + /// Сама дешифровка sig идёт через SigCipherDecryptor. + /// private async ValueTask ResolveCipherManifestAsync(CancellationToken cancellationToken) { - if (_cipherManifest is not null) return _cipherManifest; - var playerSource = await _controller.GetPlayerSourceAsync(cancellationToken); - return _cipherManifest = playerSource.CipherManifest - ?? throw new YoutubeExplodeException("Failed to extract cipher manifest."); + if (_cipherManifest is not null) + return _cipherManifest; + + try + { + var playerSource = await _controller.GetPlayerSourceAsync(cancellationToken); + _cipherManifest = playerSource.CipherManifest; + + if (_cipherManifest is null) + { + Log.Debug("[StreamClient] CipherManifest not available (expected with new YouTube format)"); + _cipherManifest = new CipherManifest("", []); + } + + return _cipherManifest; + } + catch (Exception ex) + { + Log.Debug($"[StreamClient] CipherManifest resolution failed: {ex.Message}"); + _cipherManifest = new CipherManifest("", []); + return _cipherManifest; + } } private async IAsyncEnumerable GetAudioStreamInfosAsync( - IEnumerable streamDatas, - [EnumeratorCancellation] CancellationToken cancellationToken = default) + IEnumerable streamDatas, + [EnumeratorCancellation] CancellationToken cancellationToken = default) { foreach (var streamData in streamDatas) { var itag = streamData.Itag; if (itag is null) continue; - // ВАЖНО: Opus (WebM) часто идет как "adaptive" поток. - // Пропускаем видео, но берем аудио. + var mimeType = streamData.MimeType; + if (string.IsNullOrEmpty(mimeType) || + !mimeType.StartsWith("audio/", StringComparison.OrdinalIgnoreCase)) + continue; - // 1. Если это явное видео (есть видео кодек) - пропускаем - if (!string.IsNullOrWhiteSpace(streamData.VideoCodec)) continue; - - // 2. Если нет аудио кодека - пропускаем (битый поток) - // Примечание: иногда audioCodec пустой, но MimeType содержит "audio/". - // YoutubeExplode обычно парсит это в AudioCodec. - if (string.IsNullOrWhiteSpace(streamData.AudioCodec)) continue; + var audioCodec = streamData.AudioCodec; + if (string.IsNullOrWhiteSpace(audioCodec)) continue; var url = streamData.Url; if (string.IsNullOrWhiteSpace(url)) continue; - // Расшифровка сигнатуры + // ════════════════════════════════════════════════════════ + // SIGNATURE DECRYPTION + // ════════════════════════════════════════════════════════ if (!string.IsNullOrWhiteSpace(streamData.Signature)) { - var cipherManifest = await ResolveCipherManifestAsync(cancellationToken); - url = UrlEx.SetQueryParameter( - url, - streamData.SignatureParameter ?? "sig", - cipherManifest.Decipher(streamData.Signature) - ); + Log.Debug($"[StreamClient] itag={itag} needs signature decryption " + + $"(sig length={streamData.Signature.Length})"); + + try + { + var decryptedSig = await _sigCipherDecryptor.DecipherAsync( + streamData.Signature, + cancellationToken + ); + + var sigParam = streamData.SignatureParameter ?? "sig"; + url = $"{url}&{sigParam}={Uri.EscapeDataString(decryptedSig)}"; + + Log.Debug($"[StreamClient] itag={itag} sig decrypted OK"); + } + catch (Exception ex) + { + Log.Error($"[StreamClient] itag={itag} sig decryption failed: {ex.Message}"); + continue; + } + } + + // ════════════════════════════════════════════════════════ + // N-TOKEN DECRYPTION + // ════════════════════════════════════════════════════════ + var nToken = UrlEx.TryGetQueryParameterValue(url, "n"); + if (!string.IsNullOrEmpty(nToken)) + { + try + { + var decryptedN = await _nTokenDecryptor.DecryptAsync(nToken, cancellationToken); + url = UrlEx.SetQueryParameter(url, "n", decryptedN); + } + catch (Exception ex) + { + Log.Warn($"[StreamClient] itag={itag} n-token failed: {ex.Message}"); + } } + // ════════════════════════════════════════════════════════ + // Cleanup YouTube internal parameters + // ════════════════════════════════════════════════════════ + url = UrlEx.RemoveQueryParameter(url, "ump"); + url = UrlEx.RemoveQueryParameter(url, "alr"); + url = UrlEx.RemoveQueryParameter(url, "srfvp"); + url = UrlEx.RemoveQueryParameter(url, "rbuf"); + url = UrlEx.RemoveQueryParameter(url, "pot"); + + // ════════════════════════════════════════════════════════ + // Validation & yield + // ════════════════════════════════════════════════════════ var contentLength = streamData.ContentLength ?? 0; - // Opus потоки иногда не имеют ContentLength в заголовке до запроса, - // но в манифесте он обычно есть. Если 0 - это подозрительно, но можно попробовать пропустить проверку - // если трек критически важен. Но обычно 0 = ошибка. if (contentLength == 0) continue; var container = streamData.Container?.Pipe(static s => new Container(s)); @@ -70,60 +152,73 @@ private async IAsyncEnumerable GetAudioStreamInfosAsync( Language? audioLanguage = null; if (!string.IsNullOrWhiteSpace(streamData.AudioLanguageCode)) { - audioLanguage = new Language(streamData.AudioLanguageCode, streamData.AudioLanguageName ?? ""); + audioLanguage = new Language( + streamData.AudioLanguageCode, + streamData.AudioLanguageName ?? "" + ); } yield return new AudioOnlyStreamInfo( + itag.Value, url, container.Value, new FileSize(contentLength), bitrate.Value, - streamData.AudioCodec, + audioCodec, audioLanguage, streamData.IsAudioLanguageDefault ); } } - // Основной метод получения манифеста public async ValueTask GetManifestAsync( VideoId videoId, CancellationToken cancellationToken = default) { - // 1. Получаем PlayerResponse PlayerResponse playerResponse; + bool isAuth = _isAuthenticatedCheck?.Invoke() ?? false; + try { - playerResponse = await _controller.GetPlayerResponseAsync(videoId, cancellationToken); + (playerResponse, _) = await _controller.GetPlayerResponseWithFallbackAsync( + videoId, cancellationToken, isAuthenticated: isAuth); } catch (VideoUnplayableException) { - // Fallback with cipher logic (simplified) var cipherManifest = await ResolveCipherManifestAsync(cancellationToken); - playerResponse = await _controller.GetPlayerResponseAsync(videoId, cipherManifest.SignatureTimestamp, cancellationToken); + playerResponse = await _controller.GetPlayerResponseAsync( + videoId, + cipherManifest.SignatureTimestamp, + cancellationToken + ); } - if (playerResponse.Streams.Count() == 0) - throw new VideoUnplayableException($"No streams for {videoId}"); + if (!playerResponse.IsPlayable) + throw new VideoUnplayableException( + $"Video {videoId} is not playable: {playerResponse.PlayabilityError}"); var streams = new List(); - - // 2. Извлекаем ТОЛЬКО аудио - await foreach (var stream in GetAudioStreamInfosAsync(playerResponse.Streams, cancellationToken)) + await foreach (var stream in GetAudioStreamInfosAsync( + playerResponse.Streams, cancellationToken)) { streams.Add(stream); } - // DASH нам не нужен для аудио в 99% случаев, YouTube отдает opus/aac в adaptiveFormats + if (streams.Count == 0) + throw new VideoUnplayableException($"No audio streams available for {videoId}"); return new StreamManifest(streams); } - // Методы DownloadAsync и GetAsync оставляем как есть или делегируем - public async ValueTask DownloadAsync(IStreamInfo streamInfo, string filePath, IProgress? progress = null, CancellationToken cancellationToken = default) + public async ValueTask DownloadAsync( + IStreamInfo streamInfo, + string filePath, + IProgress? progress = null, + CancellationToken cancellationToken = default) { using var destination = File.Create(filePath); - using var input = new MediaStream(http, streamInfo); + using var input = new MediaStream(_http, streamInfo); + await input.InitializeAsync(cancellationToken); await input.CopyToAsync(destination, progress, cancellationToken); } diff --git a/Core/Youtube/Videos/Streams/StreamController.cs b/Core/Youtube/Videos/Streams/StreamController.cs index 6cb6167..f9f9233 100644 --- a/Core/Youtube/Videos/Streams/StreamController.cs +++ b/Core/Youtube/Videos/Streams/StreamController.cs @@ -7,30 +7,41 @@ namespace LMP.Core.Youtube.Videos.Streams; internal partial class StreamController(HttpClient http) : VideoController(http) { public async ValueTask GetPlayerSourceAsync( - CancellationToken cancellationToken = default - ) + CancellationToken cancellationToken = default) { - var iframe = await Http.GetStringAsync( - "https://www.youtube.com/iframe_api", - cancellationToken - ); + try + { + var iframe = await Http.GetStringAsync( + "https://www.youtube.com/iframe_api", + cancellationToken + ); - var version = MyRegex().Match(iframe).Groups[1].Value; - if (string.IsNullOrWhiteSpace(version)) - throw new YoutubeExplodeException("Failed to extract the player version."); + var version = PlayerRegex().Match(iframe).Groups[1].Value; + if (string.IsNullOrWhiteSpace(version)) + { + Log.Warn("[StreamController] Failed to extract player version from iframe_api"); + throw new YoutubeExplodeException("Failed to extract the player version."); + } - return PlayerSource.Parse( - await Http.GetStringAsync( + var playerJs = await Http.GetStringAsync( $"https://www.youtube.com/s/player/{version}/player_ias.vflset/en_US/base.js", cancellationToken - ) - ); + ); + + return PlayerSource.Parse(playerJs); + } + catch (HttpRequestException ex) + { + Log.Error($"[StreamController] Failed to fetch player source: {ex.Message}"); + throw new YoutubeExplodeException($"Failed to fetch player source: {ex.Message}"); + } } public async ValueTask GetDashManifestAsync( string url, - CancellationToken cancellationToken = default - ) => DashManifest.Parse(await Http.GetStringAsync(url, cancellationToken)); + CancellationToken cancellationToken = default) + => DashManifest.Parse(await Http.GetStringAsync(url, cancellationToken)); + [GeneratedRegex(@"player\\?/([0-9a-fA-F]{8})\\?/")] - private static partial Regex MyRegex(); -} + private static partial Regex PlayerRegex(); +} \ No newline at end of file diff --git a/Core/Youtube/Videos/VideoClient.cs b/Core/Youtube/Videos/VideoClient.cs index afd7ebe..aa9f63c 100644 --- a/Core/Youtube/Videos/VideoClient.cs +++ b/Core/Youtube/Videos/VideoClient.cs @@ -1,37 +1,38 @@ using LMP.Core.Models; - +using LMP.Core.Youtube.Bridge; +using LMP.Core.Youtube.Bridge.NToken; +using LMP.Core.Youtube.Bridge.SigCipher; using LMP.Core.Youtube.Exceptions; using LMP.Core.Youtube.Videos.Streams; namespace LMP.Core.Youtube.Videos; -public class VideoClient(HttpClient http) +public class VideoClient(HttpClient http, NTokenDecryptor nTokenDecryptor, SigCipherDecryptor sigCipherDecryptor, + Func? isAuthenticatedCheck = null) { private readonly VideoController _controller = new(http); - public StreamClient Streams { get; } = new(http); + + public StreamClient Streams { get; } = new(http, nTokenDecryptor, sigCipherDecryptor, isAuthenticatedCheck); public async ValueTask GetAsync( VideoId videoId, - CancellationToken cancellationToken = default - ) + CancellationToken cancellationToken = default) { var watchPage = await _controller.GetVideoWatchPageAsync(videoId, cancellationToken); - var playerResponse = watchPage.PlayerResponse + var playerResponse = watchPage.PlayerResponse ?? await _controller.GetPlayerResponseAsync(videoId, cancellationToken); var title = playerResponse.Title ?? ""; - var channelTitle = playerResponse.Author + var channelTitle = playerResponse.Author ?? throw new YoutubeExplodeException("Failed to extract video author."); - var channelId = playerResponse.ChannelId + var channelId = playerResponse.ChannelId ?? throw new YoutubeExplodeException("Failed to extract video channel ID."); - // Получаем лучшее превью var thumb = playerResponse.Thumbnails .Select(t => new Thumbnail(t.Url!, new Resolution(t.Width ?? 0, t.Height ?? 0))) .Concat(Thumbnail.GetDefaultSet(videoId)) .TryGetWithHighestResolution()?.Url; - // Создаем TrackInfo return new TrackInfo { Id = $"yt_{videoId.Value}", @@ -42,7 +43,16 @@ public async ValueTask GetAsync( ThumbnailUrl = thumb ?? "", Url = $"https://www.youtube.com/watch?v={videoId}", IsMusic = playerResponse.IsMusic, - // Дополнительные метаданные можно расширить при необходимости }; } + + internal async ValueTask GetPlayerResponseAsync( + VideoId videoId, + CancellationToken cancellationToken = default) + { + bool isAuth = isAuthenticatedCheck?.Invoke() ?? false; + var (response, _) = await _controller.GetPlayerResponseWithFallbackAsync( + videoId, cancellationToken, isAuthenticated: isAuth); + return response; + } } \ No newline at end of file diff --git a/Core/Youtube/Videos/VideoController.cs b/Core/Youtube/Videos/VideoController.cs index 66f9e1d..b79f2b6 100644 --- a/Core/Youtube/Videos/VideoController.cs +++ b/Core/Youtube/Videos/VideoController.cs @@ -6,73 +6,163 @@ namespace LMP.Core.Youtube.Videos; +/// +/// Контроллер для получения данных о видео и PlayerResponse. +/// +/// +/// Принцип работы с ошибками: +/// Этот класс НЕ знает о UI. Он только выбрасывает типизированные исключения: +/// +/// — rate limiting от YouTube +/// — требуется авторизация +/// — стрим недоступен (403, geo-block) +/// — видео невозможно воспроизвести +/// +/// Решение о том, как показать ошибку пользователю, принимается на уровне выше +/// (см. ). +/// internal class VideoController(HttpClient http) { - private string? _visitorData; + #region Bot Detection State + + private static DateTime _lastBotDetection = DateTime.MinValue; + private static int _consecutiveFailures; + private static readonly SemaphoreSlim _requestThrottle = new(1, 1); + private static readonly Lock _stateLock = new(); + + /// + /// Длительность cooldown после обнаружения bot detection. + /// + public static readonly TimeSpan CooldownDuration = TimeSpan.FromMinutes(2); + + /// + /// Глобальная проверка — в cooldown ли мы сейчас? + /// + public static bool IsInCooldown + { + get + { + lock (_stateLock) + { + if (_consecutiveFailures < 3) return false; + var elapsed = DateTime.UtcNow - _lastBotDetection; + return elapsed < CooldownDuration; + } + } + } + + /// + /// Получить оставшееся время cooldown. + /// + public static TimeSpan GetRemainingCooldown() + { + lock (_stateLock) + { + if (_consecutiveFailures < 3) return TimeSpan.Zero; + var elapsed = DateTime.UtcNow - _lastBotDetection; + var remaining = CooldownDuration - elapsed; + return remaining > TimeSpan.Zero ? remaining : TimeSpan.Zero; + } + } + + /// + /// Сбросить состояние bot detection. + /// + public static void ResetBotDetectionState() + { + lock (_stateLock) + { + _consecutiveFailures = 0; + _lastBotDetection = DateTime.MinValue; + Log.Info("[VideoController] Bot detection state reset"); + } + } + + /// + /// Выбрасывает если в cooldown. + /// + /// Когда cooldown активен. + public static void ThrowIfInCooldown() + { + if (IsInCooldown) + { + var remaining = GetRemainingCooldown(); + throw new BotDetectionException( + $"Rate limited by YouTube. Please wait {remaining.TotalSeconds:F0} seconds.", + remaining); + } + } + + #endregion + + #region Throttle + + private static TimeSpan GetThrottleDelay() + { + int failures; + lock (_stateLock) failures = _consecutiveFailures; + + return failures switch + { + 0 => TimeSpan.FromMilliseconds(150), + 1 => TimeSpan.FromSeconds(1), + 2 => TimeSpan.FromSeconds(3), + _ => TimeSpan.FromSeconds(5) + }; + } + + #endregion + + private string? _visitorData; protected HttpClient Http { get; } = http; - private async ValueTask ResolveVisitorDataAsync( - CancellationToken cancellationToken = default - ) + #region Visitor Data + + private async ValueTask ResolveVisitorDataAsync(CancellationToken cancellationToken = default) { if (!string.IsNullOrWhiteSpace(_visitorData)) return _visitorData; - using var request = new HttpRequestMessage( - HttpMethod.Get, - "https://www.youtube.com/sw.js_data" - ); - + using var request = new HttpRequestMessage(HttpMethod.Get, "https://www.youtube.com/sw.js_data"); request.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json")); - - request.Headers.Add( - "User-Agent", - "com.google.android.youtube/20.10.38 (Linux; U; ANDROID 11) gzip" - ); + request.Headers.Add("User-Agent", YoutubeClientUtils.UaWeb); using var response = await Http.SendAsync(request, cancellationToken); response.EnsureSuccessStatusCode(); - // TODO: move this to a bridge wrapper var jsonString = await response.Content.ReadAsStringAsync(cancellationToken); if (jsonString.StartsWith(")]}'")) jsonString = jsonString[4..]; var json = Json.Parse(jsonString); - - // This is just an ordered (but unstructured) blob of data var value = json[0][2][0][0][13].GetStringOrNull(); + if (string.IsNullOrWhiteSpace(value)) - { throw new YoutubeExplodeException("Failed to resolve visitor data."); - } return _visitorData = value; } + #endregion + + #region Watch Page + public async ValueTask GetVideoWatchPageAsync( VideoId videoId, - CancellationToken cancellationToken = default - ) + CancellationToken cancellationToken = default) { for (var retriesRemaining = 5; ; retriesRemaining--) { var watchPage = VideoWatchPage.TryParse( await Http.GetStringAsync( $"https://www.youtube.com/watch?v={videoId}&bpctr=9999999999", - cancellationToken - ) - ); + cancellationToken)); if (watchPage is null) { - if (retriesRemaining > 0) - continue; - - throw new YoutubeExplodeException( - "Video watch page is broken. Please try again in a few minutes." - ); + if (retriesRemaining > 0) continue; + throw new YoutubeExplodeException("Video watch page is broken. Please try again in a few minutes."); } if (!watchPage.IsAvailable) @@ -82,90 +172,337 @@ await Http.GetStringAsync( } } + #endregion + + #region GetPlayerResponse + public async ValueTask GetPlayerResponseAsync( VideoId videoId, CancellationToken cancellationToken = default) { - Log.Info($"GetPlayerResponse START ({YoutubeClientUtils.CurrentProfile}): {videoId}"); + var clientName = YoutubeClientUtils.CurrentProfile.ToString().ToUpperInvariant(); + if (clientName == "ANDROIDVR") clientName = "ANDROID_VR"; + return await GetPlayerResponseWithClientAsync(videoId, clientName, cancellationToken); + } + + public async ValueTask GetPlayerResponseWithClientAsync( + VideoId videoId, + string clientName, + CancellationToken cancellationToken, + string? signatureTimestamp = null) + { + // ══════════════════════════════════════════════════════════════ + // COOLDOWN CHECK — выбрасываем исключение вместо показа диалога + // ══════════════════════════════════════════════════════════════ + ThrowIfInCooldown(); + + // Throttle + await _requestThrottle.WaitAsync(cancellationToken); + try + { + var delay = GetThrottleDelay(); + if (delay > TimeSpan.Zero) + await Task.Delay(delay, cancellationToken); + } + finally { _requestThrottle.Release(); } + + Log.Info($"GetPlayerResponse START ({clientName}): {videoId}"); var visitorData = await ResolveVisitorDataAsync(cancellationToken); - using var request = new HttpRequestMessage( - HttpMethod.Post, - "https://www.youtube.com/youtubei/v1/player" - ); + // SignatureTimestamp для веб-клиентов + if (signatureTimestamp == null && clientName is "WEB" or "WEB_REMIX" or "TVHTML5_SIMPLY_EMBEDDED_PLAYER") + { + signatureTimestamp = await ResolveSignatureTimestampAsync(cancellationToken); + } + + // Правильный URL + var playerUrl = clientName == "WEB_REMIX" + ? "https://music.youtube.com/youtubei/v1/player" + : "https://www.youtube.com/youtubei/v1/player"; - // Ставим флаг для Handler-а - request.Options.Set(YoutubeHttpHandler.IsPlayerContext, true); + using var request = new HttpRequestMessage(HttpMethod.Post, playerUrl); - // Генерируем JSON на основе текущего статического профиля - string jsonBody = YoutubeClientUtils.GeneratePlayerContext(videoId.Value, visitorData); + // User-Agent + request.Headers.Add("User-Agent", YoutubeClientUtils.GetUserAgentForClient(clientName)); - request.Content = new StringContent(jsonBody); + bool isMobileClient = clientName is "ANDROID_VR" or "ANDROID_MUSIC" or "IOS" or + "TVHTML5_SIMPLY_EMBEDDED_PLAYER" or "ANDROID_TESTSUITE"; + + if (isMobileClient) + { + request.Options.Set(YoutubeHttpHandler.IsMobileClient, true); + request.Options.Set(YoutubeHttpHandler.IsPlayerContext, true); + } + else + { + request.Options.Set(YoutubeHttpHandler.IsMobileClient, false); + } + + string jsonBody = YoutubeClientUtils.GeneratePlayerContextForClient( + clientName, videoId.Value, visitorData, signatureTimestamp); + + request.Content = new StringContent(jsonBody, System.Text.Encoding.UTF8, "application/json"); using var response = await Http.SendAsync(request, cancellationToken); var content = await response.Content.ReadAsStringAsync(cancellationToken); - response.EnsureSuccessStatusCode(); - return PlayerResponse.Parse(content); + if (!response.IsSuccessStatusCode) + { + var statusCode = (int)response.StatusCode; + Log.Warn($"[VideoController] [{videoId}] {clientName} HTTP {statusCode}"); + + if (statusCode == 403) + { + throw new StreamUnavailableException( + $"HTTP 403 Forbidden for video {videoId} via {clientName}", + videoId.Value, + StreamUnavailableReason.Forbidden403, + httpStatusCode: 403); + } + + throw new YoutubeExplodeException($"HTTP {response.StatusCode} for client {clientName}"); + } + + var playerResponse = PlayerResponse.Parse(content); + + if (playerResponse.IsLoginRequired) + { + Log.Warn($"[VideoController] [{videoId}] LOGIN_REQUIRED via {clientName}: {playerResponse.LoginRequiredReason}"); + + throw new LoginRequiredException( + $"Video {videoId} requires login: {playerResponse.LoginRequiredReason}", + videoId.Value, + playerResponse.LoginRequiredReason); + } + + TrackBotDetection(playerResponse, videoId.Value); + + return playerResponse; } - public async ValueTask GetPlayerResponseAsync( - VideoId videoId, - string? signatureTimestamp, - CancellationToken cancellationToken = default - ) + private string? _signatureTimestamp; + + private async ValueTask ResolveSignatureTimestampAsync(CancellationToken ct) { - var visitorData = await ResolveVisitorDataAsync(cancellationToken); + if (_signatureTimestamp != null) return _signatureTimestamp; + + try + { + var iframe = await Http.GetStringAsync("https://www.youtube.com/iframe_api", ct); + var versionMatch = System.Text.RegularExpressions.Regex.Match(iframe, @"player\\?/([0-9a-fA-F]{8})\\?/"); + if (!versionMatch.Success) return null; + + var version = versionMatch.Groups[1].Value; + var playerJs = await Http.GetStringAsync( + $"https://www.youtube.com/s/player/{version}/player_ias.vflset/en_US/base.js", ct); + + var stsMatch = System.Text.RegularExpressions.Regex.Match(playerJs, @"signatureTimestamp[=:]\s*(\d+)"); + if (stsMatch.Success) + { + _signatureTimestamp = stsMatch.Groups[1].Value; + Log.Info($"[VideoController] SignatureTimestamp: {_signatureTimestamp}"); + } - // The only client that can handle age-restricted videos without authentication is the - // TVHTML5_SIMPLY_EMBEDDED_PLAYER client. - // This client does require signature deciphering, so we only use it as a fallback. - using var request = new HttpRequestMessage( - HttpMethod.Post, - "https://www.youtube.com/youtubei/v1/player" - ); + return _signatureTimestamp; + } + catch (Exception ex) + { + Log.Warn($"[VideoController] Failed to get signatureTimestamp: {ex.Message}"); + return null; + } + } + + #endregion - var hl = YoutubeHttpHandler.GetHl(); - var gl = YoutubeHttpHandler.GetGl(); + #region Bot Detection Tracking - request.Content = new StringContent( - // lang=json - $$""" + /// + /// Отслеживает bot detection по ответам PlayerResponse. + /// При обнаружении увеличивает счётчик failures. + /// НЕ показывает диалоги — это ответственность вышестоящего слоя. + /// + private static void TrackBotDetection(PlayerResponse response, string videoId) + { + if (IsBotDetectionResponse(response)) + { + lock (_stateLock) { - "videoId": {{Json.Serialize(videoId)}}, - "context": { - "client": { - "clientName": "TVHTML5_SIMPLY_EMBEDDED_PLAYER", - "clientVersion": "2.0", - "visitorData": {{Json.Serialize(visitorData)}}, - "hl": {{Json.Serialize(hl)}}, - "gl": {{Json.Serialize(gl)}}, - "utcOffsetMinutes": 0 - }, - "thirdParty": { - "embedUrl": "https://www.youtube.com" + _consecutiveFailures++; + _lastBotDetection = DateTime.UtcNow; + + if (_consecutiveFailures == 1) + { + Log.Warn("[VideoController] ⚠️ Bot detection triggered — slowing down requests"); } - }, - "playbackContext": { - "contentPlaybackContext": { - "signatureTimestamp": {{Json.Serialize(signatureTimestamp)}} + else if (_consecutiveFailures >= 3) + { + Log.Error($"[VideoController] ❌ Multiple bot detections ({_consecutiveFailures}) — cooldown active"); } - } } - """ - ); + } + else if (response.IsPlayable) + { + lock (_stateLock) + { + if (_consecutiveFailures > 0) + { + Log.Info($"[VideoController] ✓ Bot detection cleared after {_consecutiveFailures} failures"); + _consecutiveFailures = 0; + } + } + } + } - using var response = await Http.SendAsync(request, cancellationToken); - response.EnsureSuccessStatusCode(); + private static bool IsBotDetectionResponse(PlayerResponse response) + { + var error = response.PlayabilityError; + if (string.IsNullOrEmpty(error)) return false; + + return error.Contains("bot", StringComparison.OrdinalIgnoreCase) || + error.Contains("Sign in", StringComparison.OrdinalIgnoreCase) || + error.Contains("Выполните вход", StringComparison.OrdinalIgnoreCase) || + error.Contains("Войдите", StringComparison.OrdinalIgnoreCase) || + error.Contains("LOGIN_REQUIRED", StringComparison.OrdinalIgnoreCase) || + error.Contains("confirm you're not", StringComparison.OrdinalIgnoreCase) || + error.Contains("подтвердить", StringComparison.OrdinalIgnoreCase); + } - var playerResponse = PlayerResponse.Parse( - await response.Content.ReadAsStringAsync(cancellationToken) - ); + #endregion - if (!playerResponse.IsAvailable) - throw new VideoUnavailableException($"Video '{videoId}' is not available."); + #region Fallback Methods - return playerResponse; + /// + /// Получает PlayerResponse с fallback по списку клиентов. + /// + /// Все клиенты заблокированы bot detection. + /// Все клиенты требуют авторизацию. + /// Видео недоступно через все клиенты. + public async ValueTask<(PlayerResponse Response, string ClientName)> GetPlayerResponseWithFallbackAsync( + VideoId videoId, + CancellationToken cancellationToken, + bool isAuthenticated = false) + { + var clients = YoutubeClientUtils.GetStreamFallbackClients(isAuthenticated); + var errors = new List(); + var allBotDetection = true; + bool hasLoginRequired = false; + LoginRequiredException? loginException = null; + + foreach (var clientName in clients) + { + try + { + var response = await GetPlayerResponseWithClientAsync(videoId, clientName, cancellationToken); + + if (response.IsPlayable && response.Streams.Any()) + { + Log.Info($"[VideoController] [{videoId}] SUCCESS with {clientName}"); + return (response, clientName); + } + + var error = response.PlayabilityError ?? "Not playable / No streams"; + Log.Warn($"[VideoController] [{videoId}] {clientName}: {error}"); + errors.Add($"{clientName}: {error}"); + + if (!IsBotDetectionResponse(response)) + allBotDetection = false; + } + catch (LoginRequiredException ex) + { + if (!hasLoginRequired) + { + hasLoginRequired = true; + loginException = ex; + } + errors.Add($"{clientName}: LOGIN_REQUIRED"); + allBotDetection = false; + } + catch (StreamUnavailableException) { throw; } + catch (BotDetectionException) { throw; } + catch (OperationCanceledException) { throw; } + catch (Exception ex) + { + Log.Warn($"[VideoController] [{videoId}] {clientName} exception: {ex.Message}"); + errors.Add($"{clientName}: {ex.Message}"); + allBotDetection = false; + } + } + + // Все клиенты требуют логин + if (hasLoginRequired && loginException != null) + { + Log.Error($"[VideoController] [{videoId}] All clients require login: {loginException.Reason}"); + throw loginException; + } + + var allErrors = string.Join("; ", errors); + + // Все клиенты заблокированы bot detection + if (allBotDetection && IsInCooldown) + { + throw new BotDetectionException( + $"All clients blocked by bot detection for {videoId}", + GetRemainingCooldown()); + } + + throw new VideoUnplayableException( + $"Video {videoId} is not available through any client. Errors: {allErrors}"); } -} + + /// + /// Получает HLS манифест URL через fallback клиенты. + /// + /// HLS недоступен (403). + public async ValueTask GetHlsManifestUrlAsync( + VideoId videoId, + CancellationToken cancellationToken = default) + { + foreach (var clientName in YoutubeClientUtils.HlsFallbackClients) + { + try + { + var response = await GetPlayerResponseWithClientAsync(videoId, clientName, cancellationToken); + + var hlsUrl = response.HlsManifestUrl; + if (!string.IsNullOrEmpty(hlsUrl)) + { + Log.Info($"[VideoController] [{videoId}] HLS found via {clientName}"); + return hlsUrl; + } + } + catch (StreamUnavailableException ex) when (ex.HttpStatusCode == 403) + { + Log.Warn($"[VideoController] [{videoId}] HLS via {clientName} got 403"); + + // Пробрасываем с пометкой что это был HLS fallback + throw new StreamUnavailableException( + $"HLS stream returned 403 for video {videoId}", + videoId.Value, + StreamUnavailableReason.Forbidden403, + httpStatusCode: 403, + wasHlsFallback: true); + } + catch (BotDetectionException) { throw; } + catch (OperationCanceledException) { throw; } + catch (Exception ex) + { + Log.Debug($"[VideoController] [{videoId}] HLS via {clientName} failed: {ex.Message}"); + } + } + + Log.Warn($"[VideoController] [{videoId}] No HLS manifest available from any client"); + return null; + } + + public async ValueTask GetPlayerResponseAsync( + VideoId videoId, + string? signatureTimestamp, + CancellationToken cancellationToken = default) + { + return await GetPlayerResponseWithClientAsync( + videoId, "TVHTML5_SIMPLY_EMBEDDED_PLAYER", cancellationToken, signatureTimestamp); + } + + #endregion +} \ No newline at end of file diff --git a/Core/Youtube/YoutubeClient.cs b/Core/Youtube/YoutubeClient.cs index c89ff30..b1452c7 100644 --- a/Core/Youtube/YoutubeClient.cs +++ b/Core/Youtube/YoutubeClient.cs @@ -1,100 +1,44 @@ -using System.Net; -using System.Text; +using LMP.Core.Youtube.Bridge.NToken; +using LMP.Core.Youtube.Bridge.SigCipher; using LMP.Core.Youtube.Channels; using LMP.Core.Youtube.Music; using LMP.Core.Youtube.Playlists; using LMP.Core.Youtube.Search; -using LMP.Core.Youtube.Utils; using LMP.Core.Youtube.Videos; namespace LMP.Core.Youtube; -/// -/// Client for interacting with YouTube. -/// public class YoutubeClient : IDisposable { private readonly HttpClient _youtubeHttp; - - /// - /// Основной конструктор. - /// Принимает готовый HttpClient. Если вы используете YoutubeProvider, - /// сюда передается клиент, уже настроенный через YoutubeHttpHandler. - /// - public YoutubeClient(HttpClient http) + private readonly bool _ownsHttpClient; + + public YoutubeClient( + HttpClient http, + NTokenDecryptor nTokenDecryptor, + SigCipherDecryptor sigCipherDecryptor, + Func? isAuthenticatedCheck = null, + bool ownsHttpClient = false) { _youtubeHttp = http; + _ownsHttpClient = ownsHttpClient; - Videos = new VideoClient(_youtubeHttp); + Videos = new VideoClient(_youtubeHttp, nTokenDecryptor, sigCipherDecryptor, isAuthenticatedCheck); Playlists = new PlaylistClient(_youtubeHttp); Channels = new ChannelClient(_youtubeHttp); Search = new SearchClient(_youtubeHttp); Music = new MusicClient(_youtubeHttp); } - /// - /// Initializes an instance of . - /// - public YoutubeClient() - : this(Http.Client) { } - - /// - /// Operations related to YouTube videos. - /// public VideoClient Videos { get; } - - /// - /// Operations related to YouTube playlists. - /// public PlaylistClient Playlists { get; } - - /// - /// Operations related to YouTube channels. - /// public ChannelClient Channels { get; } - - /// - /// Operations related to YouTube search. - /// public SearchClient Search { get; } + public MusicClient Music { get; } - public MusicClient Music { get; } - - /// - public void Dispose() => _youtubeHttp.Dispose(); - - // Вспомогательный метод для извлечения куки из контейнера в строку - private static string ConvertContainerToString(CookieContainer container) + public void Dispose() { - // Собираем куки с основных доменов, чтобы сформировать полную строку - var uris = new[] - { - new Uri("https://youtube.com"), - new Uri("https://music.youtube.com"), - new Uri("https://google.com") - }; - - var uniqueCookies = new Dictionary(); - - foreach (var uri in uris) - { - var collection = container.GetCookies(uri); - foreach (Cookie cookie in collection) - { - if (!uniqueCookies.ContainsKey(cookie.Name)) - { - uniqueCookies[cookie.Name] = cookie.Value; - } - } - } - - var sb = new StringBuilder(); - foreach (var kvp in uniqueCookies) - { - if (sb.Length > 0) sb.Append("; "); - sb.Append($"{kvp.Key}={kvp.Value}"); - } - - return sb.ToString(); + if (_ownsHttpClient) _youtubeHttp.Dispose(); + GC.SuppressFinalize(this); } } \ No newline at end of file diff --git a/Core/Youtube/YoutubeHttpHandler.cs b/Core/Youtube/YoutubeHttpHandler.cs index 6fd28d3..5f8f9ee 100644 --- a/Core/Youtube/YoutubeHttpHandler.cs +++ b/Core/Youtube/YoutubeHttpHandler.cs @@ -9,9 +9,9 @@ namespace LMP.Core.Youtube; -public partial class YoutubeHttpHandler(HttpClient http, CookieAuthService? authService, bool disposeClient = false) : ClientDelegatingHandler(http, disposeClient) +public partial class YoutubeHttpHandler(HttpClient http, CookieAuthService? authService, bool disposeClient = false) + : ClientDelegatingHandler(http, disposeClient) { - // Клиенты public const string MusicClientVersion = "1.20260126.03.00"; public const string MusicClientName = "67"; public const string WebClientVersion = "2.20260126.01.00"; @@ -22,6 +22,9 @@ public partial class YoutubeHttpHandler(HttpClient http, CookieAuthService? auth public static readonly HttpRequestOptionsKey VisitorDataKey = new("VisitorData"); public static readonly HttpRequestOptionsKey IsPlayerContext = new("IsPlayerContext"); + + // ✅ Новый ключ для указания что это мобильный/TV клиент (без SAPISIDHASH) + public static readonly HttpRequestOptionsKey IsMobileClient = new("IsMobileClient"); public static string GetHl() => LocalizationService.Instance.CurrentLanguageCode ?? "en"; @@ -31,16 +34,41 @@ public static string GetGl() catch { return "US"; } } + /// + /// Генерация SAPISIDHASH с использованием Span и stackalloc. + /// private static string? GetAuthHeader(string? sapisid, string origin) { if (string.IsNullOrWhiteSpace(sapisid)) return null; var timestamp = DateTimeOffset.UtcNow.ToUnixTimeSeconds(); - var payload = $"{timestamp} {sapisid} {origin}"; - var hashBytes = SHA1.HashData(Encoding.UTF8.GetBytes(payload)); - var hashHex = Convert.ToHexStringLower(hashBytes); - - return $"SAPISIDHASH {timestamp}_{hashHex}"; + var timestampStr = timestamp.ToString(CultureInfo.InvariantCulture); + + int payloadLen = timestampStr.Length + 1 + sapisid.Length + 1 + origin.Length; + Span payloadChars = payloadLen <= 256 + ? stackalloc char[payloadLen] + : new char[payloadLen]; + + int pos = 0; + timestampStr.AsSpan().CopyTo(payloadChars[pos..]); + pos += timestampStr.Length; + payloadChars[pos++] = ' '; + sapisid.AsSpan().CopyTo(payloadChars[pos..]); + pos += sapisid.Length; + payloadChars[pos++] = ' '; + origin.AsSpan().CopyTo(payloadChars[pos..]); + + int utf8Len = Encoding.UTF8.GetByteCount(payloadChars); + Span utf8Bytes = utf8Len <= 512 + ? stackalloc byte[utf8Len] + : new byte[utf8Len]; + Encoding.UTF8.GetBytes(payloadChars, utf8Bytes); + + Span hash = stackalloc byte[20]; + SHA1.HashData(utf8Bytes, hash); + var hashHex = Convert.ToHexStringLower(hash); + + return string.Concat("SAPISIDHASH ", timestampStr, "_", hashHex); } private HttpRequestMessage HandleRequest(HttpRequestMessage request) @@ -49,47 +77,35 @@ private HttpRequestMessage HandleRequest(HttpRequestMessage request) var host = request.RequestUri.Host; bool isMusic = host.Contains("music.youtube.com"); - - // Проверяем флаг, который мы ставим в VideoController (для плеера VR/TV) bool isPlayerRequest = request.Options.TryGetValue(IsPlayerContext, out var p) && p; + + // ✅ Проверяем, это мобильный/TV клиент (ANDROID_VR, ANDROID_MUSIC, IOS, TV) + bool isMobileClient = request.Options.TryGetValue(IsMobileClient, out var m) && m; - // === 1. User-Agent === - if (request.Headers.Contains("User-Agent")) request.Headers.Remove("User-Agent"); - - if (isPlayerRequest) - { - // Берем текущий UA из статического конфига (VR/TV/Web) - request.Headers.Add("User-Agent", YoutubeClientUtils.UserAgent); - - // Для VR/TV клиентов — не отправляем куки и auth (они ломают запрос) - if (!YoutubeClientUtils.RequiresAuth) - { - return request; - } - } - else + // User-Agent: НЕ добавляем если уже есть (установлен в VideoController) + if (!request.Headers.Contains("User-Agent")) { - // Обычные запросы (поиск, Music API, картинки) — всегда WEB UA request.Headers.Add("User-Agent", YoutubeClientUtils.UaWeb); } - // === 2. Accept-Language === + // Accept-Language if (!request.Headers.Contains("Accept-Language")) request.Headers.Add("Accept-Language", "en,ru;q=0.9"); - // === 3. Куки (для авторизованных запросов) === - if (authService != null && authService.IsAuthenticated) + // ✅ Cookies — только для WEB клиентов, НЕ для мобильных + if (!isMobileClient && authService is { IsAuthenticated: true }) { var cookieHeader = authService.GetCookieHeader(); if (!string.IsNullOrEmpty(cookieHeader)) { - if (request.Headers.Contains("Cookie")) request.Headers.Remove("Cookie"); + if (request.Headers.Contains("Cookie")) + request.Headers.Remove("Cookie"); request.Headers.Add("Cookie", cookieHeader); } } - // === 4. Заголовки специфичные для Music === - if (isMusic) + // Music headers — только для НЕ-player запросов + if (isMusic && !isPlayerRequest) { request.Headers.Remove("X-YouTube-Client-Name"); request.Headers.Remove("X-YouTube-Client-Version"); @@ -106,38 +122,52 @@ private HttpRequestMessage HandleRequest(HttpRequestMessage request) if (authService?.IsAuthenticated == true) request.Headers.Add("X-Goog-AuthUser", "0"); } - else if (!isPlayerRequest) // Стандартный WEB-контекст (не плеер) + else if (!isPlayerRequest && request.Method == HttpMethod.Post) { - if (request.Method == HttpMethod.Post) - { - if (!request.Headers.Contains("Origin")) request.Headers.Add("Origin", YoutubeOrigin); - } + if (!request.Headers.Contains("Origin")) + request.Headers.Add("Origin", YoutubeOrigin); } - // === 5. Visitor Data === + // Visitor Data if (request.Options.TryGetValue(VisitorDataKey, out var visitorData) && !string.IsNullOrEmpty(visitorData)) { - if (request.Headers.Contains("X-Goog-Visitor-Id")) request.Headers.Remove("X-Goog-Visitor-Id"); + if (request.Headers.Contains("X-Goog-Visitor-Id")) + request.Headers.Remove("X-Goog-Visitor-Id"); request.Headers.Add("X-Goog-Visitor-Id", visitorData); } - // === 6. SAPISIDHASH Authorization === - // КРИТИЧНО: НЕ отправлять для Player-запросов (VR/TV), это ломает воспроизведение - bool isYoutubeApi = host.Contains("youtube.com") && request.RequestUri.AbsolutePath.Contains("/youtubei/v1/"); + // ✅ SAPISIDHASH — ТОЛЬКО для WEB клиентов, НЕ для мобильных/TV + bool isYoutubeApi = host.Contains("youtube.com") && + request.RequestUri.AbsolutePath.Contains("/youtubei/v1/"); - if (request.Method == HttpMethod.Post && isYoutubeApi && !isPlayerRequest) + if (request.Method == HttpMethod.Post && + isYoutubeApi && + !isMobileClient && // ✅ Не добавляем для мобильных клиентов + authService?.IsAuthenticated == true) { - // Выбираем правильный origin в зависимости от домена var origin = isMusic ? MusicOrigin : YoutubeOrigin; - var sapisid = authService?.GetCookieValue("SAPISID"); + var sapisid = authService.GetCookieValue("SAPISID"); if (!string.IsNullOrWhiteSpace(sapisid)) { var authHeader = GetAuthHeader(sapisid, origin); if (!string.IsNullOrWhiteSpace(authHeader)) { - if (request.Headers.Contains("Authorization")) request.Headers.Remove("Authorization"); + if (request.Headers.Contains("Authorization")) + request.Headers.Remove("Authorization"); request.Headers.Add("Authorization", authHeader); + + // Origin должен совпадать с тем что в SAPISIDHASH + if (request.Headers.Contains("Origin")) + request.Headers.Remove("Origin"); + request.Headers.Add("Origin", origin); + + if (request.Headers.Contains("X-Origin")) + request.Headers.Remove("X-Origin"); + request.Headers.Add("X-Origin", origin); + + if (!request.Headers.Contains("X-Goog-AuthUser")) + request.Headers.Add("X-Goog-AuthUser", "0"); } } } @@ -153,10 +183,8 @@ private HttpRequestMessage HandleRequest(HttpRequestMessage request) try { - // Целевой URL — основной YouTube using var request = new HttpRequestMessage(HttpMethod.Get, "https://www.youtube.com/sw.js_data"); - // Заголовки request.Headers.Add("User-Agent", YoutubeClientUtils.UaWeb); request.Headers.Add("Accept", "application/json"); request.Headers.Add("Accept-Language", "ru,en;q=0.9"); @@ -164,36 +192,25 @@ private HttpRequestMessage HandleRequest(HttpRequestMessage request) request.Headers.Add("Pragma", "no-cache"); request.Headers.Add("Priority", "u=1, i"); request.Headers.Add("Referer", "https://www.youtube.com/"); - - // Sec заголовки request.Headers.Add("Sec-Fetch-Dest", "empty"); request.Headers.Add("Sec-Fetch-Mode", "cors"); request.Headers.Add("Sec-Fetch-Site", "same-origin"); - - // Client Hints (Chrome 142) request.Headers.Add("sec-ch-ua", "\"Not_A Brand\";v=\"99\", \"Chromium\";v=\"142\""); request.Headers.Add("sec-ch-ua-mobile", "?0"); request.Headers.Add("sec-ch-ua-platform", "\"Windows\""); request.Headers.Add("sec-ch-ua-full-version", "\"142.0.0.0\""); - // Куки для восстановления var resurrectionCookies = authService.GetResurrectionCookieHeader(); if (!string.IsNullOrEmpty(resurrectionCookies)) - { request.Headers.Add("Cookie", resurrectionCookies); - } - // Отправляем напрямую (в обход HandleRequest) var response = await base.SendAsync(request, ct); var content = await response.Content.ReadAsStringAsync(ct); bool sessionRefreshed = false; if (response.Headers.TryGetValues("Set-Cookie", out var newCookies)) - { sessionRefreshed = authService.UpdateCookies(newCookies); - } - // Извлечение VisitorData string? newVisitorData = null; var match = VisitorExtractRegex().Match(content); if (match.Success) newVisitorData = match.Value; @@ -212,7 +229,9 @@ private HttpRequestMessage HandleRequest(HttpRequestMessage request) return null; } - protected override async Task SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) + protected override async Task SendAsync( + HttpRequestMessage request, + CancellationToken cancellationToken) { for (var i = 0; i < 3; i++) { @@ -223,12 +242,9 @@ protected override async Task SendAsync(HttpRequestMessage { var response = await base.SendAsync(processedRequest, cancellationToken); - // Пассивное обновление куки bool cookiesUpdated = false; if (authService != null && response.Headers.TryGetValues("Set-Cookie", out var newCookies)) - { cookiesUpdated = authService.UpdateCookies(newCookies); - } if (response.StatusCode == System.Net.HttpStatusCode.Unauthorized) { @@ -239,13 +255,12 @@ protected override async Task SendAsync(HttpRequestMessage await Task.Delay(200, cancellationToken); continue; } - else if (authService != null) + + if (authService != null) { var newVisitorData = await TryRefreshSessionAsync(cancellationToken); if (!string.IsNullOrEmpty(newVisitorData)) - { request.Options.Set(VisitorDataKey, newVisitorData); - } await Task.Delay(500, cancellationToken); continue; } @@ -285,10 +300,9 @@ private static async Task CloneRequestAsync(HttpRequestMessa if (request.Content != null) { - var ms = new MemoryStream(); - await request.Content.CopyToAsync(ms); - ms.Position = 0; - clone.Content = new StreamContent(ms); + var bytes = await request.Content.ReadAsByteArrayAsync(); + clone.Content = new ByteArrayContent(bytes); + if (request.Content.Headers.ContentType != null) clone.Content.Headers.ContentType = request.Content.Headers.ContentType; } diff --git a/Directory.Build.props b/Directory.Build.props new file mode 100644 index 0000000..86893d0 --- /dev/null +++ b/Directory.Build.props @@ -0,0 +1,48 @@ + + + + 1.0 + + + dev + + + + + + + + + + + + + + + + 0 + unknown + + + $(VersionPrefix).$(GitCommitCount) + $(VersionPrefix).$(GitCommitCount).0 + $(VersionPrefix).$(GitCommitCount).0 + + + $(Version)-dev+$(GitShortHash) + $(Version)+$(GitShortHash) + + + + + + + + + $(VersionPrefix).0 + $(VersionPrefix).0.0 + $(VersionPrefix).0.0 + $(Version)-local + + + \ No newline at end of file diff --git a/Directory.Build.targets b/Directory.Build.targets new file mode 100644 index 0000000..6772882 --- /dev/null +++ b/Directory.Build.targets @@ -0,0 +1,53 @@ + + + + + + + + + + + + + + 0 + local + + + + + $([System.String]::Copy('$(GitCommitCount)').Trim()) + $([System.String]::Copy('$(GitShortHash)').Trim()) + + + + 1.0.$(GitCommitCount) + 1.0.$(GitCommitCount).0 + 1.0.$(GitCommitCount).0 + 1.0.$(GitCommitCount)+$(GitShortHash) + + + + + + + + + + 1.0.0 + 1.0.0.0 + 1.0.0.0 + 1.0.0+local + + + + \ No newline at end of file diff --git a/Features/Debug/DebugViewModel.cs b/Features/Debug/DebugViewModel.cs index 9d05a4f..583de8f 100644 --- a/Features/Debug/DebugViewModel.cs +++ b/Features/Debug/DebugViewModel.cs @@ -7,6 +7,14 @@ using ReactiveUI.Fody.Helpers; using Microsoft.Extensions.DependencyInjection; using LMP.Features.Shared; +using LMP.Core.Audio.Helpers; + +using LMP.Core.Audio; +using LMP.Core.Audio.Cache; +using LMP.Core.Audio.Interfaces; +using LMP.Core.Audio.Sources; +using LMP.Core.Audio.Decoders; +using LMP.Core.Audio.Backends; namespace LMP.Features.Debug; @@ -18,6 +26,14 @@ public sealed class DebugViewModel : ViewModelBase, IDisposable [Reactive] public string SearchQuery { get; set; } = "Linkin Park"; [Reactive] public bool IsBusy { get; set; } + [Reactive] public string AudioTestInput { get; set; } = "aG_i7fvGSXU"; + [Reactive] public int AudioTestDuration { get; set; } = 10; + [Reactive] public bool IsAudioPlaying { get; set; } + + private CancellationTokenSource? _audioTestCts; + private AudioPlayer? _testPlayer; + private AudioCacheManager? _testCacheManager; + public ReactiveCommand GetLikedVideosCommand { get; } public ReactiveCommand GetLikedMusicCommand { get; } public ReactiveCommand SearchVideosCommand { get; } @@ -29,6 +45,14 @@ public sealed class DebugViewModel : ViewModelBase, IDisposable public ReactiveCommand ClearCachesCommand { get; } public ReactiveCommand CheckVmLeaksCommand { get; } + // Audio test commands + public ReactiveCommand PlayYoutubeAudioCommand { get; } + public ReactiveCommand PlayYoutubeWithCacheCommand { get; } + public ReactiveCommand StopAudioTestCommand { get; } + public ReactiveCommand ShowCacheStatsCommand { get; } + public ReactiveCommand ClearAudioCacheCommand { get; } + public ReactiveCommand TestLocalFileCommand { get; } + public DebugViewModel() { _youtube = Program.Services.GetRequiredService(); @@ -43,16 +67,14 @@ public DebugViewModel() DumpMemoryCommand = CreateCommand(ReactiveCommand.Create(ExecuteDumpMemory)); ForceGcCommand = CreateCommand(ReactiveCommand.Create(ExecuteForceGc)); ClearCachesCommand = CreateCommand(ReactiveCommand.CreateFromTask(ExecuteClearCaches)); - + CheckVmLeaksCommand = CreateCommand(ReactiveCommand.Create(() => { var vmFactory = Program.Services.GetRequiredService(); - // Через reflection var cacheField = vmFactory.GetType().GetField("_cache", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance); - if (cacheField?.GetValue(vmFactory) is System.Collections.Concurrent.ConcurrentDictionary> cache) { int alive = 0; @@ -80,14 +102,444 @@ public DebugViewModel() AppendLog($"--- END ---\n"); } })); + + // Audio test commands + PlayYoutubeAudioCommand = CreateCommand(ReactiveCommand.CreateFromTask(ExecutePlayYoutubeAudio)); + PlayYoutubeWithCacheCommand = CreateCommand(ReactiveCommand.CreateFromTask(ExecutePlayYoutubeWithCache)); + StopAudioTestCommand = CreateCommand(ReactiveCommand.Create(ExecuteStopAudioTest)); + ShowCacheStatsCommand = CreateCommand(ReactiveCommand.Create(ExecuteShowCacheStats)); + ClearAudioCacheCommand = CreateCommand(ReactiveCommand.CreateFromTask(ExecuteClearAudioCache)); + TestLocalFileCommand = CreateCommand(ReactiveCommand.CreateFromTask(ExecuteTestLocalFile)); } + + private async Task ExecutePlayYoutubeAudio() + { + await PlayAudioTestAsync(useCache: false); + } + + private async Task ExecutePlayYoutubeWithCache() + { + await PlayAudioTestAsync(useCache: true); + } + + private async Task PlayAudioTestAsync(bool useCache) + { + if (IsAudioPlaying) + { + AppendLog("⚠️ Audio test already running. Stop it first."); + return; + } + + IsBusy = true; + IsAudioPlaying = true; + _audioTestCts = new CancellationTokenSource(); + + var cacheMode = useCache ? "WITH CACHE" : "NO CACHE"; + AppendLog($"\n╔════════════════════════════════════════╗"); + AppendLog($"║ 🎵 AUDIO TEST ({cacheMode})"); + AppendLog($"╚════════════════════════════════════════╝"); + AppendLog($" Input: {AudioTestInput}"); + AppendLog($" Duration: {AudioTestDuration}s"); + + try + { + var videoId = ExtractVideoId(AudioTestInput); + if (string.IsNullOrEmpty(videoId)) + { + AppendLog($" ❌ Invalid YouTube URL/ID"); + return; + } + AppendLog($" Video ID: {videoId}"); + + AppendLog($" → Getting stream URL..."); + var track = new TrackInfo + { + Id = videoId, + Title = "Test Track", + Author = "Unknown", + Url = $"https://www.youtube.com/watch?v={videoId}" + }; + + try + { + var fullTrack = await _youtube.GetTrackByUrlAsync(track.Url); + if (fullTrack != null) track = fullTrack; + AppendLog($" ✓ Title: {track.Title}"); + AppendLog($" ✓ Author: {track.Author}"); + } + catch (Exception ex) + { + AppendLog($" ⚠️ Track info error: {ex.Message}"); + } + + var streamInfo = await _youtube.RefreshStreamUrlAsync(track, forceRefresh: true, _audioTestCts.Token); + if (streamInfo == null) + { + AppendLog($" ❌ Failed to get stream URL"); + return; + } + + var (url, size, bitrate, codec, container) = streamInfo.Value; + AppendLog($" ✓ Codec: {codec}, Bitrate: {bitrate}kbps"); + AppendLog($" ✓ Container: {container}, Size: {size / 1024.0 / 1024.0:F1}MB"); + AppendLog($" ✓ HLS: {track.IsHlsOnly}"); + + AppendLog($" → Creating AudioPlayer..."); + + // Инициализируем глобальный кэш если включен + if (useCache) + { + _testCacheManager = new AudioCacheManager(); + AudioSourceFactory.InitializeGlobalCache(_testCacheManager); + AppendLog($" ✓ Cache enabled"); + } + + var options = new AudioPlayerOptions + { + UrlRefreshCallback = async (trackId, ct) => + { + var newStream = await _youtube.RefreshStreamUrlAsync(track, forceRefresh: true, ct); + return newStream?.Url; + } + }; + + // AudioPlayer теперь принимает только options + _testPlayer = new AudioPlayer(options); + + _testPlayer.StateChanged += state => + Avalonia.Threading.Dispatcher.UIThread.Post(() => + AppendLog($" State: {state}")); + + _testPlayer.ErrorOccurred += ex => + Avalonia.Threading.Dispatcher.UIThread.Post(() => + AppendLog($" ❌ Error: {ex.Message}")); + + _testPlayer.TrackEnded += () => + Avalonia.Threading.Dispatcher.UIThread.Post(() => + { + AppendLog($" 🏁 Track ended"); + IsAudioPlaying = false; + }); + + AppendLog($" → Starting playback..."); + await _testPlayer.PlayAsync(url, track.Id, ct: _audioTestCts.Token); + + AppendLog($" ▶️ Playing for {AudioTestDuration}s..."); + + var startTime = DateTime.Now; + while ((DateTime.Now - startTime).TotalSeconds < AudioTestDuration && + !_audioTestCts.Token.IsCancellationRequested && + _testPlayer.State == PlaybackState.Playing) + { + await Task.Delay(1000, _audioTestCts.Token); + var pos = _testPlayer.Position.TotalSeconds; + var dur = _testPlayer.Duration.TotalSeconds; + var buf = _testPlayer.BufferProgress; + var downloaded = _testPlayer.GetDownloadedBytes() / 1024.0; + AppendLog($" ⏱️ {pos:F1}s / {dur:F1}s | Buffer: {buf:F0}% | Downloaded: {downloaded:F0}KB"); + } + + AppendLog($" ✓ Test completed"); + + if (_testCacheManager != null) + { + var stats = _testCacheManager.GetStats(); + AppendLog($" 📦 Cache: {stats.CompleteEntries} complete, {stats.TotalSizeFormatted}"); + } + } + catch (OperationCanceledException) + { + AppendLog($" ⏹️ Cancelled"); + } + catch (Exception ex) + { + AppendLog($" ❌ Error: {ex.Message}"); + AppendLog($" Stack: {ex.StackTrace}"); + } + finally + { + await CleanupAudioTest(); + IsBusy = false; + IsAudioPlaying = false; + AppendLog($"═══════════════════════════════════════\n"); + } + } + + private void ExecuteStopAudioTest() + { + if (!IsAudioPlaying) + { + AppendLog("No audio test running."); + return; + } + + AppendLog("⏹️ Stopping audio test..."); + _audioTestCts?.Cancel(); + _ = CleanupAudioTest(); + } + + private async Task CleanupAudioTest() + { + if (_testPlayer != null) + { + await _testPlayer.DisposeAsync(); + _testPlayer = null; + } + + // *** ВАЖНО: освобождаем cacheManager чтобы сохранить индекс *** + if (_testCacheManager != null) + { + await _testCacheManager.DisposeAsync(); + _testCacheManager = null; + } + + _audioTestCts?.Dispose(); + _audioTestCts = null; + IsAudioPlaying = false; + } + + private void ExecuteShowCacheStats() + { + AppendLog("\n--- AUDIO CACHE STATS ---"); + + try + { + // Если есть активный тест — показываем его кэш + if (_testCacheManager != null) + { + var stats = _testCacheManager.GetStats(); + AppendLog($" [Active Test Cache]"); + AppendLog($" Total entries: {stats.TotalEntries}"); + AppendLog($" Complete: {stats.CompleteEntries}"); + AppendLog($" Partial: {stats.PartialEntries}"); + AppendLog($" Size: {stats.TotalSizeFormatted} / {stats.MaxSizeFormatted}"); + AppendLog($" Usage: {stats.UsagePercent:F1}%"); + } + else + { + // Иначе создаём временный для чтения с диска + using var cacheManager = new AudioCacheManager(); + var stats = cacheManager.GetStats(); + + AppendLog($" [Disk Cache]"); + AppendLog($" Total entries: {stats.TotalEntries}"); + AppendLog($" Complete: {stats.CompleteEntries}"); + AppendLog($" Partial: {stats.PartialEntries}"); + AppendLog($" Size: {stats.TotalSizeFormatted} / {stats.MaxSizeFormatted}"); + AppendLog($" Usage: {stats.UsagePercent:F1}%"); + } + } + catch (Exception ex) + { + AppendLog($" Error: {ex.Message}"); + } + + AppendLog("--- END ---\n"); + } + + private async Task ExecuteClearAudioCache() + { + AppendLog("\n--- CLEARING AUDIO CACHE ---"); + IsBusy = true; + + try + { + var cacheDir = Path.Combine( + Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), + "LMP", "AudioCache"); + + if (Directory.Exists(cacheDir)) + { + var files = Directory.GetFiles(cacheDir); + foreach (var file in files) + { + try + { + File.Delete(file); + } + catch { } + } + AppendLog($" ✓ Deleted {files.Length} files"); + } + else + { + AppendLog($" Cache directory doesn't exist"); + } + } + catch (Exception ex) + { + AppendLog($" Error: {ex.Message}"); + } + finally + { + IsBusy = false; + AppendLog("--- CACHE CLEARED ---\n"); + } + } + + private async Task ExecuteTestLocalFile() + { + AppendLog("\n--- LOCAL FILE TEST ---"); + AppendLog(" Select a .webm, .mp4, .m4a, or .ogg file to test."); + + // Для простоты — тест с фиксированным путём + // В реальном приложении нужен file picker + var testPath = Path.Combine( + Environment.GetFolderPath(Environment.SpecialFolder.MyMusic), + "test.webm"); + + if (!File.Exists(testPath)) + { + AppendLog($" ⚠️ Test file not found: {testPath}"); + AppendLog($" Place a test audio file at this path."); + return; + } + + IsBusy = true; + _audioTestCts = new CancellationTokenSource(); + IsAudioPlaying = true; + + try + { + AppendLog($" File: {testPath}"); + + var source = new LocalFileSource(testPath); + if (!await source.InitializeAsync(_audioTestCts.Token)) + { + AppendLog($" ❌ Failed to initialize source"); + return; + } + + AppendLog($" ✓ Duration: {source.DurationMs}ms"); + AppendLog($" ✓ Codec: {source.Codec}"); + AppendLog($" ✓ Sample rate: {source.SampleRate}Hz"); + AppendLog($" ✓ Channels: {source.Channels}"); + + // Create decoder + IAudioDecoder decoder = source.Codec == AudioCodec.Opus + ? new OpusDecoder(source.SampleRate > 0 ? source.SampleRate : 48000, source.Channels > 0 ? source.Channels : 2) + : new AacDecoder(source.SampleRate > 0 ? source.SampleRate : 44100, source.Channels > 0 ? source.Channels : 2); + + if (decoder is AacDecoder aac && source.DecoderConfig != null) + { + aac.Initialize(source.DecoderConfig); + } + + // Create backend + IPlaybackBackend backend; + try + { + backend = new NAudioBackend(); + AppendLog($" ✓ NAudioBackend"); + } + catch + { + backend = new NullAudioBackend(); + AppendLog($" ⚠️ NullBackend (no audio output)"); + } + + // PCM buffer + var pcmBuffer = new CircularBuffer(decoder.SampleRate * decoder.Channels * 4); + var decodeOutput = new float[decoder.MaxFrameSize * decoder.Channels]; + + backend.Initialize(decoder.SampleRate, decoder.Channels, buffer => + { + int read = pcmBuffer.Read(buffer); + if (read < buffer.Length) buffer[read..].Clear(); + return read / decoder.Channels; + }); + + // Decode loop + var decodeTask = Task.Run(async () => + { + try + { + while (!_audioTestCts.Token.IsCancellationRequested) + { + while (pcmBuffer.Available < decodeOutput.Length) + await Task.Delay(5, _audioTestCts.Token); + + var frame = await source.ReadFrameAsync(_audioTestCts.Token); + if (frame == null) break; + + int samples = decoder.Decode(frame.Value.Data.Span, decodeOutput); + if (samples > 0) + pcmBuffer.Write(decodeOutput.AsSpan(0, samples * decoder.Channels)); + } + } + catch (OperationCanceledException) { } + }); + + // Buffer + await Task.Delay(500, _audioTestCts.Token); + + // Play + backend.Start(); + AppendLog($" ▶️ Playing for {AudioTestDuration}s..."); + + var start = DateTime.Now; + while ((DateTime.Now - start).TotalSeconds < AudioTestDuration && + !_audioTestCts.Token.IsCancellationRequested) + { + await Task.Delay(1000, _audioTestCts.Token); + AppendLog($" ⏱️ {source.PositionMs / 1000.0:F1}s"); + } + + backend.Stop(); + _audioTestCts.Cancel(); + + backend.Dispose(); + decoder.Dispose(); + await source.DisposeAsync(); + + AppendLog($" ✓ Test completed"); + } + catch (Exception ex) + { + AppendLog($" ❌ Error: {ex.Message}"); + } + finally + { + IsBusy = false; + IsAudioPlaying = false; + AppendLog("--- END ---\n"); + } + } + + private static string? ExtractVideoId(string input) + { + if (string.IsNullOrWhiteSpace(input)) return null; + input = input.Trim(); + + // Already a video ID? + if (System.Text.RegularExpressions.Regex.IsMatch(input, @"^[a-zA-Z0-9_-]{11}$")) + return input; + + // youtube.com/watch?v=VIDEO_ID + var match = System.Text.RegularExpressions.Regex.Match(input, @"[?&]v=([a-zA-Z0-9_-]{11})"); + if (match.Success) return match.Groups[1].Value; + + // youtu.be/VIDEO_ID + match = System.Text.RegularExpressions.Regex.Match(input, @"youtu\.be/([a-zA-Z0-9_-]{11})"); + if (match.Success) return match.Groups[1].Value; + + // youtube.com/embed/VIDEO_ID + match = System.Text.RegularExpressions.Regex.Match(input, @"embed/([a-zA-Z0-9_-]{11})"); + if (match.Success) return match.Groups[1].Value; + + // youtube.com/shorts/VIDEO_ID + match = System.Text.RegularExpressions.Regex.Match(input, @"shorts/([a-zA-Z0-9_-]{11})"); + if (match.Success) return match.Groups[1].Value; + + return null; + } + + private void ExecuteDumpMemory() { var report = MemoryDiagnostics.Instance.GetFullReport(); AppendLog(report); - - // Также логируем в файл MemoryDiagnostics.LogReport(); } @@ -113,30 +565,24 @@ private async Task ExecuteClearCaches() try { - // Image cache var imageCache = Program.Services.GetRequiredService(); imageCache.ClearMemoryCache(); AppendLog("✓ Image memory cache cleared"); - // Search cache var searchCache = Program.Services.GetRequiredService(); searchCache.ClearAll(); AppendLog("✓ Search cache cleared"); - // YouTube stream cache _youtube.ClearCache(); AppendLog("✓ YouTube stream URL cache cleared"); - // TrackViewModelFactory var vmFactory = Program.Services.GetRequiredService(); var cleaned = vmFactory.CleanupCache(); AppendLog($"✓ TrackVM cache: cleaned {cleaned} dead refs"); - // Force GC after clearing MemoryDiagnostics.ForceCleanup(); AppendLog("✓ GC completed"); - // Show new memory state var stats = MemoryDiagnostics.Instance.CurrentStats; AppendLog($"\nCurrent memory: {stats.WorkingSetMb} MB (GC: {stats.GcTotalMemoryMb} MB)"); } @@ -217,4 +663,17 @@ private void AppendLog(string text) { LogOutput += text + "\n"; } + + protected override void Dispose(bool disposing) + { + if (disposing) + { + _audioTestCts?.Cancel(); + _audioTestCts?.Dispose(); + _testPlayer?.Dispose(); + _testCacheManager?.Dispose(); + } + + base.Dispose(disposing); + } } \ No newline at end of file diff --git a/Features/Debug/DebugWindow.axaml b/Features/Debug/DebugWindow.axaml index c5302f5..57b6e3e 100644 --- a/Features/Debug/DebugWindow.axaml +++ b/Features/Debug/DebugWindow.axaml @@ -4,11 +4,11 @@ xmlns:mi="using:Material.Icons.Avalonia" x:Class="LMP.Features.Debug.DebugWindow" x:DataType="vm:DebugViewModel" - Title="Query Debugger" Width="800" Height="650" + Title="Query Debugger" Width="900" Height="750" Background="{DynamicResource BgPrimaryBrush}" WindowStartupLocation="CenterScreen"> - + @@ -75,18 +75,97 @@ - - + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + - + + ScrollViewer.VerticalScrollBarVisibility="Disabled" + Classes="chip-list"> - + @@ -80,22 +81,11 @@ - - - - - + diff --git a/Features/Home/HomeViewModel.cs b/Features/Home/HomeViewModel.cs index e94741c..53368ce 100644 --- a/Features/Home/HomeViewModel.cs +++ b/Features/Home/HomeViewModel.cs @@ -74,7 +74,6 @@ public HomeViewModel( InitializeCategories(); - // Fix: Use CreateCommand wrapper ToggleDebugCommand = CreateCommand(ReactiveCommand.Create(() => ShowDebugInfo = !ShowDebugInfo)); RefreshCommand = CreateCommand(ReactiveCommand.CreateFromTask(async () => await LoadTracksAsync(force: true))); diff --git a/Features/Library/PlaylistCardViewModel.cs b/Features/Library/PlaylistCardViewModel.cs index b9a4a34..8af3f21 100644 --- a/Features/Library/PlaylistCardViewModel.cs +++ b/Features/Library/PlaylistCardViewModel.cs @@ -1,5 +1,4 @@ -// Features/Library/PlaylistCardViewModel.cs -using System.Reactive; +using System.Reactive; using System.Reactive.Disposables; using LMP.Core.Services; using LMP.Core.ViewModels; diff --git a/Features/Notifications/NotificationButton.axaml b/Features/Notifications/NotificationButton.axaml new file mode 100644 index 0000000..1a1d075 --- /dev/null +++ b/Features/Notifications/NotificationButton.axaml @@ -0,0 +1,34 @@ + + + + \ No newline at end of file diff --git a/Features/Notifications/NotificationButton.axaml.cs b/Features/Notifications/NotificationButton.axaml.cs new file mode 100644 index 0000000..fe62596 --- /dev/null +++ b/Features/Notifications/NotificationButton.axaml.cs @@ -0,0 +1,11 @@ +using Avalonia.Controls; + +namespace LMP.Features.Notifications; + +public partial class NotificationButton : UserControl +{ + public NotificationButton() + { + InitializeComponent(); + } +} \ No newline at end of file diff --git a/Features/Notifications/NotificationButtonViewModel.cs b/Features/Notifications/NotificationButtonViewModel.cs new file mode 100644 index 0000000..323e756 --- /dev/null +++ b/Features/Notifications/NotificationButtonViewModel.cs @@ -0,0 +1,47 @@ +using System.Reactive; +using LMP.Core.Services; +using LMP.Core.ViewModels; +using ReactiveUI; +using ReactiveUI.Fody.Helpers; + +namespace LMP.Features.Notifications; + +public sealed class NotificationButtonViewModel : ViewModelBase +{ + private readonly NotificationService _notificationService; + + [Reactive] public bool IsPanelOpen { get; set; } + + public bool HasUnread => _notificationService.HasUnread; + public int UnreadCount => _notificationService.UnreadCount; + public string UnreadCountText => UnreadCount > 9 ? "9+" : UnreadCount.ToString(); + + public ReactiveCommand TogglePanelCommand { get; } + + public NotificationButtonViewModel(NotificationService notificationService) + { + _notificationService = notificationService; + + // Подписываемся на изменения в сервисе + _notificationService.PropertyChanged += (_, e) => + { + if (e.PropertyName is nameof(NotificationService.UnreadCount) or nameof(NotificationService.HasUnread)) + { + this.RaisePropertyChanged(nameof(HasUnread)); + this.RaisePropertyChanged(nameof(UnreadCount)); + this.RaisePropertyChanged(nameof(UnreadCountText)); + } + }; + + TogglePanelCommand = CreateCommand(ReactiveCommand.Create(() => + { + IsPanelOpen = !IsPanelOpen; + + // При открытии панели отмечаем все как прочитанные + if (IsPanelOpen) + { + _notificationService.MarkAllAsRead(); + } + })); + } +} \ No newline at end of file diff --git a/Features/Notifications/NotificationPanel.axaml b/Features/Notifications/NotificationPanel.axaml new file mode 100644 index 0000000..83758a8 --- /dev/null +++ b/Features/Notifications/NotificationPanel.axaml @@ -0,0 +1,306 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + diff --git a/Features/Notifications/NotificationPanel.axaml.cs b/Features/Notifications/NotificationPanel.axaml.cs new file mode 100644 index 0000000..19222fa --- /dev/null +++ b/Features/Notifications/NotificationPanel.axaml.cs @@ -0,0 +1,11 @@ +using Avalonia.Controls; + +namespace LMP.Features.Notifications; + +public partial class NotificationPanel : UserControl +{ + public NotificationPanel() + { + InitializeComponent(); + } +} \ No newline at end of file diff --git a/Features/Notifications/NotificationPanelViewModel.cs b/Features/Notifications/NotificationPanelViewModel.cs new file mode 100644 index 0000000..fd6344f --- /dev/null +++ b/Features/Notifications/NotificationPanelViewModel.cs @@ -0,0 +1,74 @@ +// Features/Notifications/NotificationPanelViewModel.cs + +using System.Collections.ObjectModel; +using System.Reactive; +using Avalonia; +using Avalonia.Controls.ApplicationLifetimes; +using LMP.Core.Services; +using LMP.Core.ViewModels; +using ReactiveUI; +using Notification = LMP.Core.Models.Notification; + +namespace LMP.Features.Notifications; + +public sealed class NotificationPanelViewModel : ViewModelBase +{ + private readonly NotificationService _notificationService; + + public ObservableCollection Notifications => _notificationService.Notifications; + public bool HasNotifications => Notifications.Count > 0; + + public ReactiveCommand ClearAllCommand { get; } + public ReactiveCommand CopyErrorCommand { get; } + public ReactiveCommand CopyTrackUrlCommand { get; } + + public NotificationPanelViewModel(NotificationService notificationService) + { + _notificationService = notificationService; + + Notifications.CollectionChanged += (_, _) => + { + this.RaisePropertyChanged(nameof(HasNotifications)); + }; + + ClearAllCommand = CreateCommand(ReactiveCommand.Create(() => + { + _notificationService.ClearAll(); + })); + + CopyErrorCommand = CreateCommand(ReactiveCommand.Create(details => + { + if (string.IsNullOrEmpty(details)) return; + CopyToClipboard(details, "Error details"); + })); + + CopyTrackUrlCommand = CreateCommand(ReactiveCommand.Create(trackId => + { + if (string.IsNullOrEmpty(trackId)) return; + + var url = trackId.StartsWith("yt_") + ? $"https://youtube.com/watch?v={trackId[3..]}" + : trackId.StartsWith("http") + ? trackId + : $"https://youtube.com/watch?v={trackId}"; + + CopyToClipboard(url, "Track URL"); + })); + } + + private static void CopyToClipboard(string text, string description) + { + try + { + if (Application.Current?.ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop) + { + desktop.MainWindow?.Clipboard?.SetTextAsync(text); + Log.Info($"[Notification] {description} copied to clipboard"); + } + } + catch (Exception ex) + { + Log.Warn($"[Notification] Failed to copy: {ex.Message}"); + } + } +} \ No newline at end of file diff --git a/Features/Notifications/ToastOverlay.axaml b/Features/Notifications/ToastOverlay.axaml new file mode 100644 index 0000000..18af75d --- /dev/null +++ b/Features/Notifications/ToastOverlay.axaml @@ -0,0 +1,96 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + diff --git a/Features/Notifications/ToastOverlay.axaml.cs b/Features/Notifications/ToastOverlay.axaml.cs new file mode 100644 index 0000000..ef24821 --- /dev/null +++ b/Features/Notifications/ToastOverlay.axaml.cs @@ -0,0 +1,11 @@ +using Avalonia.Controls; + +namespace LMP.Features.Notifications; + +public partial class ToastOverlay : UserControl +{ + public ToastOverlay() + { + InitializeComponent(); + } +} \ No newline at end of file diff --git a/Features/Notifications/ToastOverlayViewModel.cs b/Features/Notifications/ToastOverlayViewModel.cs new file mode 100644 index 0000000..4b4b46d --- /dev/null +++ b/Features/Notifications/ToastOverlayViewModel.cs @@ -0,0 +1,63 @@ +using System.Reactive; +using LMP.Core.Models; +using LMP.Core.Services; +using LMP.Core.ViewModels; +using ReactiveUI; +using Notification = LMP.Core.Models.Notification; + +namespace LMP.Features.Notifications; + +public sealed class ToastOverlayViewModel : ViewModelBase +{ + private readonly NotificationService _notificationService; + + public Notification? CurrentToast => _notificationService.CurrentToast; + public bool IsVisible => _notificationService.IsToastVisible; + + #region Null-safe wrapper properties for XAML binding + + public string ToastTitle => CurrentToast?.Title ?? string.Empty; + public string ToastMessage => CurrentToast?.Message ?? string.Empty; + public string ToastIcon => CurrentToast?.Icon ?? string.Empty; + + /// + /// Severity для конвертера в XAML. + /// + public NotificationSeverity ToastSeverity => CurrentToast?.Severity ?? NotificationSeverity.Info; + + #endregion + + public ReactiveCommand DismissCommand { get; } + + public ToastOverlayViewModel(NotificationService notificationService) + { + _notificationService = notificationService; + + _notificationService.PropertyChanged += (_, e) => + { + if (e.PropertyName == nameof(NotificationService.CurrentToast)) + { + this.RaisePropertyChanged(nameof(CurrentToast)); + this.RaisePropertyChanged(nameof(IsVisible)); + RaiseToastWrapperProperties(); + } + if (e.PropertyName == nameof(NotificationService.IsToastVisible)) + { + this.RaisePropertyChanged(nameof(IsVisible)); + } + }; + + DismissCommand = CreateCommand(ReactiveCommand.Create(() => + { + _notificationService.DismissToast(); + })); + } + + private void RaiseToastWrapperProperties() + { + this.RaisePropertyChanged(nameof(ToastTitle)); + this.RaisePropertyChanged(nameof(ToastMessage)); + this.RaisePropertyChanged(nameof(ToastIcon)); + this.RaisePropertyChanged(nameof(ToastSeverity)); + } +} \ No newline at end of file diff --git a/Features/Player/PlayerBarView.axaml b/Features/Player/PlayerBarView.axaml index 97e6812..eebd388 100644 --- a/Features/Player/PlayerBarView.axaml +++ b/Features/Player/PlayerBarView.axaml @@ -11,13 +11,11 @@ UseLayoutRounding="True"> - - - + + + - - + + @@ -106,9 +110,9 @@ + - @@ -167,16 +174,15 @@ - - @@ -187,7 +193,7 @@ - + + + + + + + + + + + - - - - + + + + @@ -298,9 +338,7 @@ - - @@ -324,10 +362,13 @@ Classes="track-container" RenderTransformOrigin="0.5,0.5"> - - + + - + - + - + - - + + - + - + - + - + - + - + - - + + - - + + - + - + - + +/// Code-behind для панели управления плеером. +/// public partial class PlayerBarView : UserControl { #region Constants @@ -16,15 +20,16 @@ public partial class PlayerBarView : UserControl private const double VolumeThumbDiameter = 12.0; private const double VolumeThumbRadius = VolumeThumbDiameter / 2.0; - private const double VolumeSliderHeightPerPercent = 0.8; private const double VolumeSliderMinHeight = 60.0; + private const double VolumeSliderMaxHeight = 200.0; - private const int VolumeScrollStep = 1; private const int VolumePopupCloseDelayMs = 400; private const int VolumeTooltipHideDelayMs = 1500; - private const int SparkAnimationIntervalMs = 16; // ~60 FPS + private const int SparkAnimationIntervalMs = 16; private const double SparkSpeed = 6.0; private const double SparkWidth = 80.0; + private const double MinSegmentWidthPx = 2.0; + private const double VolumePopupContentWidth = 28.0; #endregion @@ -35,16 +40,22 @@ public partial class PlayerBarView : UserControl private bool _isVolumePopupHovered; private bool _isVolumeButtonHovered; private bool _isWindowActive = true; + private bool _isSuspended; + + private bool _isVolumeTooltipActive; private double _seekDragRatio; private double _sparkPosition = -SparkWidth; + private double _cachedSeekWidth; + + private readonly List _bufferSegments = []; + private IBrush? _bufferBrushCache; private DispatcherTimer? _volumePopupCloseTimer; private DispatcherTimer? _volumeTooltipHideTimer; private DispatcherTimer? _sparkAnimationTimer; private FlyoutBase? _formatFlyout; - // Для отписки от старого ViewModel private PlayerBarViewModel? _currentViewModel; #endregion @@ -66,6 +77,7 @@ private void SetupEventHandlers() VolumeButton.PointerEntered += OnVolumeButtonEntered; VolumeButton.PointerExited += OnVolumeButtonExited; VolumePopup.Opened += OnVolumePopupOpened; + VolumePopup.Closed += OnVolumePopupClosed; _formatFlyout = FormatButton.Flyout; if (_formatFlyout != null) @@ -79,7 +91,6 @@ private void SetupEventHandlers() private void SetupTimers() { - // Volume popup close timer _volumePopupCloseTimer = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(VolumePopupCloseDelayMs) @@ -87,24 +98,21 @@ private void SetupTimers() _volumePopupCloseTimer.Tick += (_, _) => { if (!_isVolumePopupHovered && !_isVolumeButtonHovered && !_isDraggingVolume) - { VolumePopup.IsOpen = false; - } _volumePopupCloseTimer?.Stop(); }; - // Volume tooltip hide timer _volumeTooltipHideTimer = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(VolumeTooltipHideDelayMs) }; _volumeTooltipHideTimer.Tick += (_, _) => { + _isVolumeTooltipActive = false; VolumeTooltipPopup.IsOpen = false; _volumeTooltipHideTimer?.Stop(); }; - // Spark animation timer _sparkAnimationTimer = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(SparkAnimationIntervalMs) @@ -145,16 +153,26 @@ protected override void OnDetachedFromVisualTree(VisualTreeAttachmentEventArgs e VolumeButton.PointerEntered -= OnVolumeButtonEntered; VolumeButton.PointerExited -= OnVolumeButtonExited; VolumePopup.Opened -= OnVolumePopupOpened; + VolumePopup.Closed -= OnVolumePopupClosed; + + _currentViewModel?.PropertyChanged -= OnViewModelPropertyChanged; + _currentViewModel = null; + + ClearBufferSegments(); + } - // Отписываемся от ViewModel - if (_currentViewModel != null) + private void OnWindowActivated(object? sender, EventArgs e) + { + _isWindowActive = true; + + if (!_isSuspended) { - _currentViewModel.PropertyChanged -= OnViewModelPropertyChanged; - _currentViewModel = null; + UpdateSeekVisual(); + UpdateBufferVisual(); + UpdatePlayingGlow(); } } - private void OnWindowActivated(object? sender, EventArgs e) => _isWindowActive = true; private void OnWindowDeactivated(object? sender, EventArgs e) { _isWindowActive = false; @@ -165,51 +183,52 @@ protected override void OnDataContextChanged(EventArgs e) { base.OnDataContextChanged(e); - // Отписываемся от старого ViewModel - if (_currentViewModel != null) - { - _currentViewModel.PropertyChanged -= OnViewModelPropertyChanged; - _currentViewModel = null; - } + _currentViewModel?.PropertyChanged -= OnViewModelPropertyChanged; + _currentViewModel = null; - // Подписываемся на новый if (DataContext is PlayerBarViewModel vm) { _currentViewModel = vm; vm.PropertyChanged += OnViewModelPropertyChanged; + vm.RegisterView(this); - // Инициализируем размеры ДО открытия любых Popup InitializeVolumeSlider(vm); - // Синхронизируем начальное состояние анимации if (vm.IsLoading) StartSparkAnimation(); else StopSparkAnimation(); + + InvalidateBufferBrushCache(); + UpdateBufferVisual(); } } - private void OnViewModelPropertyChanged(object? sender, System.ComponentModel.PropertyChangedEventArgs e) { if (sender is not PlayerBarViewModel vm) return; - // Critical properties always update if (e.PropertyName == nameof(PlayerBarViewModel.IsLoading)) { + if (_isSuspended) return; // Не запускаем spark в suspended + if (vm.IsLoading) - { StartSparkAnimation(); - } else - { StopSparkAnimation(); - } return; } - // Skip non-critical updates when window inactive - if (!_isWindowActive) return; + if (e.PropertyName == nameof(PlayerBarViewModel.IsTrackResetting)) + { + if (vm.IsTrackResetting) + ApplySliderReset(); + else + RemoveSliderReset(); + return; + } + + if (_isSuspended || !_isWindowActive) return; switch (e.PropertyName) { @@ -222,7 +241,8 @@ private void OnViewModelPropertyChanged(object? sender, System.ComponentModel.Pr } break; - case nameof(PlayerBarViewModel.BufferedSeconds): + case nameof(PlayerBarViewModel.BufferedRanges): + case nameof(PlayerBarViewModel.IsFullyBuffered): UpdateBufferVisual(); break; @@ -235,31 +255,94 @@ private void OnViewModelPropertyChanged(object? sender, System.ComponentModel.Pr UpdateVolumeSliderHeight(vm.MaxVolume); if (!_isDraggingVolume) UpdateVolumeVisual(); break; + + case nameof(PlayerBarViewModel.IsSeekBusy): + if (!vm.IsSeekBusy) + { + UpdateBufferVisual(); + } + break; + } + } + + private void ApplySliderReset() + { + // Скрываем прогресс и thumb мгновенно + ProgressBar.Classes.Add("hidden"); + ProgressBar.Width = 0; + SeekThumb.Classes.Add("hidden"); + SeekCursor.Classes.Add("hidden"); + PlayingGlow.Width = 0; + + // Полностью очищаем буферные сегменты + HideAllBufferSegments(); + + // Запускаем spark только если не suspended + if (!_isSuspended) + StartSparkAnimation(); + } + + private void RemoveSliderReset() + { + ProgressBar.Classes.Remove("hidden"); + SeekThumb.Classes.Remove("hidden"); + SeekCursor.Classes.Remove("hidden"); + + // Останавливаем spark если не загружаемся + if (_currentViewModel?.IsLoading != true) + StopSparkAnimation(); + + if (!_isSuspended) + { + UpdateSeekVisual(); + UpdateBufferVisual(); + UpdatePlayingGlow(); } } + public void OnSuspend() + { + _isSuspended = true; + StopSparkAnimation(); + PlayingGlow.Classes.Add("suspended"); + CloseAllPopups(); + } + + public void OnResume() + { + _isSuspended = false; + PlayingGlow.Classes.Remove("suspended"); + + if (_currentViewModel?.IsLoading == true) + StartSparkAnimation(); + + _cachedSeekWidth = SeekContainer.Bounds.Width; + UpdateSeekVisual(); + UpdateBufferVisual(); + UpdatePlayingGlow(); + UpdateVolumeVisual(); + } + private void InitializeVolumeSlider(PlayerBarViewModel vm) { try { int maxVolume = vm.MaxVolume > 0 ? vm.MaxVolume : 100; - - // Устанавливаем высоту панели - double height = Math.Max(VolumeSliderMinHeight, maxVolume * VolumeSliderHeightPerPercent); + double height = ComputeVolumeSliderHeight(maxVolume); VolumeSliderPanel.Height = height; - // Устанавливаем начальное положение ползунка int volume = Math.Clamp(vm.Volume, 0, maxVolume); double ratio = (double)volume / maxVolume; VolumeBar.Height = height * ratio; double thumbTop = height * (1 - ratio) - VolumeThumbRadius; VolumeThumb.Margin = new Thickness(0, Math.Max(0, thumbTop), 0, 0); + + UpdateVolumePopupOffset(); } catch (Exception ex) { Log.Warn($"[PlayerBar] InitializeVolumeSlider error: {ex.Message}"); - // Fallback к безопасным значениям VolumeSliderPanel.Height = VolumeSliderMinHeight; VolumeBar.Height = 0; VolumeThumb.Margin = new Thickness(0); @@ -272,19 +355,13 @@ private void InitializeVolumeSlider(PlayerBarViewModel vm) private void StartSparkAnimation() { - if (_sparkAnimationTimer == null) - { - Log.Warn("[PlayerBar] Spark animation timer is null!"); - return; - } + if (_sparkAnimationTimer == null || _isSuspended) return; _sparkPosition = -SparkWidth; SparkRunner.Margin = new Thickness(_sparkPosition, 0, 0, 0); if (!_sparkAnimationTimer.IsEnabled) - { _sparkAnimationTimer.Start(); - } } private void StopSparkAnimation() @@ -298,7 +375,9 @@ private void StopSparkAnimation() private void OnSparkAnimationTick(object? sender, EventArgs e) { - double containerWidth = SeekContainer.Bounds.Width; + if (!_isWindowActive || _isSuspended) return; + + double containerWidth = _cachedSeekWidth > 0 ? _cachedSeekWidth : SeekContainer.Bounds.Width; if (containerWidth <= 0) containerWidth = 600; _sparkPosition += SparkSpeed; @@ -317,71 +396,194 @@ private void OnSeekContainerPropertyChanged(object? sender, AvaloniaPropertyChan { if (e.Property.Name == nameof(Bounds)) { - UpdateSeekVisual(); - UpdateBufferVisual(); - UpdatePlayingGlow(); + _cachedSeekWidth = SeekContainer.Bounds.Width; + + if (!_isSuspended) + { + UpdateSeekVisual(); + UpdateBufferVisual(); + UpdatePlayingGlow(); + } } } private void OnVolumeSliderPropertyChanged(object? sender, AvaloniaPropertyChangedEventArgs e) { if (e.Property.Name == nameof(Bounds) || e.Property.Name == nameof(Height)) + { UpdateVolumeVisual(); + UpdateVolumePopupOffset(); + } } private void OnVolumePopupOpened(object? sender, EventArgs e) { - // Только обновляем визуал, высота уже установлена if (DataContext is PlayerBarViewModel vm) { - // Высота уже должна быть установлена в InitializeVolumeSlider - // Здесь только синхронизируем визуал если что-то изменилось if (VolumeSliderPanel.Height <= 0) - { UpdateVolumeSliderHeight(vm.MaxVolume); - } UpdateVolumeVisual(); + UpdateVolumePopupOffset(); } } + private void OnVolumePopupClosed(object? sender, EventArgs e) + { + _isVolumeTooltipActive = false; + VolumeTooltipPopup.IsOpen = false; + } + + private void UpdateVolumePopupOffset() + { + double buttonWidth = VolumeButton.Width; + if (double.IsNaN(buttonWidth) || buttonWidth <= 0) buttonWidth = 38; + + double popupWidth = VolumePopupContentWidth + 2; + double offset = (buttonWidth - popupWidth) / 2.0; + + VolumePopup.HorizontalOffset = offset; + } + #endregion - #region Visual Updates + #region Buffer Segments Visual - private void UpdateSeekVisual() + private void UpdateBufferVisual() { if (DataContext is not PlayerBarViewModel vm) return; - double width = SeekContainer.Bounds.Width; - double duration = vm.DurationSeconds; + double width = _cachedSeekWidth > 0 ? _cachedSeekWidth : SeekContainer.Bounds.Width; + if (width <= 0) return; - if (width <= 0 || duration <= 0) return; + if (vm.IsTrackResetting) + { + HideAllBufferSegments(); + return; + } - double ratio = Math.Clamp(vm.PositionSeconds / duration, 0, 1); - double position = width * ratio; + var ranges = vm.BufferedRanges; - ProgressBar.Width = position; - Canvas.SetLeft(SeekThumb, position - SeekThumbRadius); + if ((ranges == null || ranges.Count == 0) && vm.IsFullyBuffered) + ranges = [(0.0, 1.0)]; + + if (ranges == null || ranges.Count == 0) + { + HideAllBufferSegments(); + return; + } + + EnsureBufferSegmentCount(ranges.Count); + + var brush = GetBufferBrush(); + + for (int i = 0; i < ranges.Count; i++) + { + var (start, end) = ranges[i]; + var segment = _bufferSegments[i]; + + if (double.IsNaN(start) || double.IsInfinity(start)) start = 0; + if (double.IsNaN(end) || double.IsInfinity(end)) end = 0; + start = Math.Clamp(start, 0, 1); + end = Math.Clamp(end, start, 1); + + double left = Math.Round(start * width); + double segWidth = Math.Round((end - start) * width); + + if (segWidth < MinSegmentWidthPx && segWidth > 0) + segWidth = MinSegmentWidthPx; + if (left + segWidth > width) + segWidth = width - left; + + Canvas.SetLeft(segment, left); + Canvas.SetTop(segment, 0); + segment.Width = Math.Max(0, segWidth); + segment.Height = 4; + segment.Background = brush; + segment.IsVisible = segWidth > 0; + segment.Opacity = vm.IsFullyBuffered ? 0.6 : 0.45; + } + + for (int i = ranges.Count; i < _bufferSegments.Count; i++) + _bufferSegments[i].IsVisible = false; } - private void UpdateBufferVisual() + private void EnsureBufferSegmentCount(int needed) + { + while (_bufferSegments.Count < needed) + { + var segment = new Border + { + Height = 4, + CornerRadius = new CornerRadius(2), + IsHitTestVisible = false, + Opacity = 0.45, + Background = GetBufferBrush() + }; + + _bufferSegments.Add(segment); + BufferSegmentsCanvas.Children.Add(segment); + } + } + + private void HideAllBufferSegments() + { + foreach (var seg in _bufferSegments) + seg.IsVisible = false; + } + + private void ClearBufferSegments() + { + _bufferSegments.Clear(); + BufferSegmentsCanvas.Children.Clear(); + _bufferBrushCache = null; + } + + private IBrush GetBufferBrush() + { + if (_bufferBrushCache != null) + return _bufferBrushCache; + + var app = Application.Current; + if (app?.Resources.TryGetResource("TextSecondaryBrush", app.ActualThemeVariant, out var res) == true + && res is IBrush b) + { + _bufferBrushCache = b; + return b; + } + + _bufferBrushCache = new SolidColorBrush(Color.FromArgb(100, 180, 180, 180)); + return _bufferBrushCache; + } + + private void InvalidateBufferBrushCache() => _bufferBrushCache = null; + + #endregion + + #region Seek Visual + + private void UpdateSeekVisual() { if (DataContext is not PlayerBarViewModel vm) return; + if (vm.IsTrackResetting) return; - double width = SeekContainer.Bounds.Width; + double width = _cachedSeekWidth > 0 ? _cachedSeekWidth : SeekContainer.Bounds.Width; double duration = vm.DurationSeconds; if (width <= 0 || duration <= 0) return; - double ratio = Math.Clamp(vm.BufferedSeconds / duration, 0, 1); - BufferBar.Width = width * ratio; + double ratio = Math.Clamp(vm.PositionSeconds / duration, 0, 1); + double position = width * ratio; + + ProgressBar.Width = position; + Canvas.SetLeft(SeekThumb, position - SeekThumbRadius); } private void UpdatePlayingGlow() { if (DataContext is not PlayerBarViewModel vm) return; + if (vm.IsTrackResetting) return; - double width = SeekContainer.Bounds.Width; + double width = _cachedSeekWidth > 0 ? _cachedSeekWidth : SeekContainer.Bounds.Width; double duration = vm.DurationSeconds; if (width <= 0 || duration <= 0) return; @@ -390,20 +592,50 @@ private void UpdatePlayingGlow() PlayingGlow.Width = Math.Max(20, width * ratio); } - private void UpdateVolumeSliderHeight(int maxVolume) + private void UpdateSeekCursor(double x) => + Canvas.SetLeft(SeekCursor, x - SeekCursorHalfWidth); + + private void UpdateSeekTooltip(double x, double seconds) + { + var time = TimeSpan.FromSeconds(Math.Max(0, seconds)); + HoverTimeText.Text = time.TotalHours >= 1 + ? time.ToString(@"h\:mm\:ss") + : time.ToString(@"m\:ss"); + + SeekTooltipBorder.Measure(Size.Infinity); + double tooltipWidth = SeekTooltipBorder.DesiredSize.Width; + SeekTooltipPopup.HorizontalOffset = x - (tooltipWidth / 2); + } + + private void UpdateSeekPreview(double x) => + PreviewFill.Width = Math.Max(0, x); + + #endregion + + #region Volume Visual + + private static double ComputeVolumeSliderHeight(int maxVolume) { - // Защита от невалидных значений if (maxVolume <= 0) maxVolume = 100; - double height = Math.Max(VolumeSliderMinHeight, maxVolume * VolumeSliderHeightPerPercent); + const double baseHeight = 80.0; + double extra = maxVolume > 100 + ? 40.0 * Math.Log2(1 + (maxVolume - 100) / 200.0) + : 0; + + double height = baseHeight + extra; + return Math.Clamp(height, VolumeSliderMinHeight, VolumeSliderMaxHeight); + } + + private void UpdateVolumeSliderHeight(int maxVolume) + { + double height = ComputeVolumeSliderHeight(maxVolume); - // Проверка на NaN/Infinity if (double.IsNaN(height) || double.IsInfinity(height)) - { height = VolumeSliderMinHeight; - } VolumeSliderPanel.Height = height; + UpdateVolumePopupOffset(); } private void UpdateVolumeVisual() @@ -413,10 +645,9 @@ private void UpdateVolumeVisual() double height = VolumeSliderPanel.Height; int maxVolume = vm.MaxVolume; - // Защита от деления на ноль и невалидных значений if (height <= 0 || double.IsNaN(height)) { - height = VolumeSliderMinHeight; + height = ComputeVolumeSliderHeight(maxVolume); VolumeSliderPanel.Height = height; } @@ -428,7 +659,6 @@ private void UpdateVolumeVisual() private void UpdateVolumeVisualInternal(double ratio, double height) { - // Защита от невалидных значений if (double.IsNaN(ratio) || double.IsInfinity(ratio)) ratio = 0; if (double.IsNaN(height) || double.IsInfinity(height) || height <= 0) height = VolumeSliderMinHeight; @@ -447,27 +677,29 @@ private void UpdateVolumeVisualInternal(double ratio, double height) VolumeThumb.Margin = new Thickness(0, thumbTop, 0, 0); } - private void UpdateSeekCursor(double x) => - Canvas.SetLeft(SeekCursor, x - SeekCursorHalfWidth); - - private void UpdateSeekTooltip(double x, double seconds) + /// + /// Показывает тултип громкости слева от текущей позиции ползунка. + /// Выравнивает центр тултипа с позицией на слайдере. + /// + private void ShowVolumeTooltip(int currentVolume, int maxVolume, double ratio) { - var time = TimeSpan.FromSeconds(Math.Max(0, seconds)); - HoverTimeText.Text = time.TotalHours >= 1 - ? time.ToString(@"h\:mm\:ss") - : time.ToString(@"m\:ss"); + VolumeTooltipText.Text = $"{currentVolume}% / {maxVolume}%"; - SeekTooltipBorder.Measure(Size.Infinity); - double tooltipWidth = SeekTooltipBorder.DesiredSize.Width; - SeekTooltipPopup.HorizontalOffset = x - (tooltipWidth / 2); - } + double height = VolumeSliderPanel.Height; + if (height <= 0) height = VolumeSliderMinHeight; - private void UpdateSeekPreview(double x) => - PreviewFill.Width = Math.Max(0, x); + // Позиция ползунка от верха панели + double thumbY = height * (1 - ratio); - private void UpdateVolumeTooltip(int currentVolume, int maxVolume) - { - VolumeTooltipText.Text = $"{currentVolume}% / {maxVolume}%"; + // VerticalOffset относительно центра PlacementTarget (VolumeHitBox) + double panelCenter = height / 2.0; + VolumeTooltipPopup.VerticalOffset = thumbY - panelCenter; + + _isVolumeTooltipActive = true; + VolumeTooltipPopup.IsOpen = true; + + _volumeTooltipHideTimer?.Stop(); + _volumeTooltipHideTimer?.Start(); } #endregion @@ -479,9 +711,11 @@ private void CloseAllPopups() SeekTooltipPopup.IsOpen = false; VolumeTooltipPopup.IsOpen = false; VolumePopup.IsOpen = false; + _isVolumeTooltipActive = false; } private void ShowSeekPreview() => PreviewFill.Classes.Add("active"); + private void HideSeekPreview() { PreviewFill.Classes.Remove("active"); @@ -497,16 +731,12 @@ private void OnVolumeButtonEntered(object? sender, PointerEventArgs e) _isVolumeButtonHovered = true; _volumePopupCloseTimer?.Stop(); - // Проверяем валидность перед открытием if (DataContext is PlayerBarViewModel vm) { try { - // Убеждаемся что размеры валидны if (VolumeSliderPanel.Height <= 0 || double.IsNaN(VolumeSliderPanel.Height)) - { InitializeVolumeSlider(vm); - } VolumePopup.IsOpen = true; } @@ -559,7 +789,7 @@ private void OnSeekAreaMoved(object? sender, PointerEventArgs e) return; } - double width = SeekContainer.Bounds.Width; + double width = _cachedSeekWidth > 0 ? _cachedSeekWidth : SeekContainer.Bounds.Width; if (width <= 0) return; double x = Math.Clamp(point.Position.X, 0, width); @@ -610,7 +840,7 @@ private void OnSeekAreaPressed(object? sender, PointerPressedEventArgs e) vm.StartSeek(); SeekContainer.Classes.Add("dragging"); - double width = SeekContainer.Bounds.Width; + double width = _cachedSeekWidth > 0 ? _cachedSeekWidth : SeekContainer.Bounds.Width; if (width <= 0) return; double x = Math.Clamp(point.Position.X, 0, width); @@ -683,11 +913,8 @@ private void OnVolumeScroll(object? sender, PointerWheelEventArgs e) { if (DataContext is not PlayerBarViewModel vm) return; - // Показываем тултип при скролле - _volumeTooltipHideTimer?.Stop(); - VolumeTooltipPopup.IsOpen = true; - - int delta = e.Delta.Y > 0 ? VolumeScrollStep : -VolumeScrollStep; + int step = vm.GetVolumeScrollStep(); + int delta = e.Delta.Y > 0 ? step : -step; int newVolume = Math.Clamp(vm.Volume + delta, 0, vm.MaxVolume); if (newVolume != vm.Volume) @@ -696,20 +923,10 @@ private void OnVolumeScroll(object? sender, PointerWheelEventArgs e) vm.OnVolumeChangeComplete(); } - // Обновляем текст и позицию тултипа - UpdateVolumeTooltip(newVolume, vm.MaxVolume); - - // Позиционируем относительно курсора мыши - var point = e.GetPosition(VolumeSliderPanel); - double height = VolumeSliderPanel.Height; double ratio = Math.Clamp((double)newVolume / vm.MaxVolume, 0, 1); - double yOffset = height * (1 - ratio) - (height / 2); - - // Принудительно ставим рядом с ползунком - VolumeTooltipPopup.VerticalOffset = yOffset; + ShowVolumeTooltip(newVolume, vm.MaxVolume, ratio); e.Handled = true; - _volumeTooltipHideTimer?.Start(); } private void OnVolumeAreaMoved(object? sender, PointerEventArgs e) @@ -732,25 +949,16 @@ private void OnVolumeAreaMoved(object? sender, PointerEventArgs e) double ratio = 1 - (y / height); int volumePercent = (int)(ratio * vm.MaxVolume); - UpdateVolumeTooltip(volumePercent, vm.MaxVolume); - - // Тултип всегда слева от курсора (через Placement="Left" в XAML + VerticalOffset) - double yOffset = height * (1 - ratio) - (height / 2); - VolumeTooltipPopup.VerticalOffset = yOffset; - if (_isDraggingVolume) { UpdateVolumeVisualInternal(ratio, height); vm.Volume = volumePercent; - VolumeTooltipPopup.IsOpen = true; + ShowVolumeTooltip(volumePercent, vm.MaxVolume, ratio); } else if (hitBox.IsPointerOver) { - VolumeTooltipPopup.IsOpen = true; - } - else - { - VolumeTooltipPopup.IsOpen = false; + // Показываем tooltip при наведении мыши (как при колёсике) + ShowVolumeTooltip(volumePercent, vm.MaxVolume, ratio); } } @@ -772,6 +980,7 @@ private void OnVolumeAreaPressed(object? sender, PointerPressedEventArgs e) _isDraggingVolume = true; e.Pointer.Capture(hitBox); VolumeThumb.Classes.Add("dragging"); + VolumeBar.Classes.Add("dragging"); double height = VolumeSliderPanel.Height; if (height <= 0) return; @@ -783,11 +992,7 @@ private void OnVolumeAreaPressed(object? sender, PointerPressedEventArgs e) UpdateVolumeVisualInternal(ratio, height); vm.Volume = newVolume; - UpdateVolumeTooltip(newVolume, vm.MaxVolume); - double yOffset = height * (1 - ratio) - (height / 2); - VolumeTooltipPopup.VerticalOffset = yOffset; - - VolumeTooltipPopup.IsOpen = true; + ShowVolumeTooltip(newVolume, vm.MaxVolume, ratio); } private void OnVolumeAreaReleased(object? sender, PointerReleasedEventArgs e) @@ -803,8 +1008,11 @@ private void OnVolumeAreaReleased(object? sender, PointerReleasedEventArgs e) private void OnVolumeAreaExited(object? sender, PointerEventArgs e) { - if (!_isDraggingVolume) + if (!_isDraggingVolume && !_isVolumeTooltipActive) + { + _volumeTooltipHideTimer?.Stop(); VolumeTooltipPopup.IsOpen = false; + } } private void OnVolumeAreaCaptureLost(object? sender, PointerCaptureLostEventArgs e) => @@ -815,7 +1023,7 @@ private void CompleteVolumeDrag(IPointer pointer) _isDraggingVolume = false; pointer.Capture(null); VolumeThumb.Classes.Remove("dragging"); - VolumeTooltipPopup.IsOpen = false; + VolumeBar.Classes.Remove("dragging"); } private void CancelVolumeDrag() @@ -824,8 +1032,10 @@ private void CancelVolumeDrag() { _isDraggingVolume = false; VolumeThumb.Classes.Remove("dragging"); + VolumeBar.Classes.Remove("dragging"); } + _isVolumeTooltipActive = false; VolumeTooltipPopup.IsOpen = false; UpdateVolumeVisual(); } diff --git a/Features/Player/PlayerBarViewModel.cs b/Features/Player/PlayerBarViewModel.cs index de433a0..d26543f 100644 --- a/Features/Player/PlayerBarViewModel.cs +++ b/Features/Player/PlayerBarViewModel.cs @@ -6,7 +6,7 @@ using Avalonia; using Avalonia.Media; using Avalonia.Threading; -using DynamicData.Binding; +using LMP.Core.Audio; using LMP.Core.Models; using LMP.Core.Services; using LMP.Core.ViewModels; @@ -15,15 +15,21 @@ namespace LMP.Features.Player; +/// +/// ViewModel для панели управления плеером. +/// public sealed class PlayerBarViewModel : ViewModelBase { #region Constants - private const int SeekCooldownMs = 250; private const int NavigationDebounceMs = 300; private const int HintDisplayDurationMs = 1500; private const int CopyHighlightDurationMs = 800; private const int PositionUpdateThrottleMs = 50; + private const int BufferUpdateIntervalMs = 300; + private const int TrackResetMinDurationMs = 300; + private const int SeekSettleDelayMs = 200; + private const int FallbackPositionIntervalMs = 500; #endregion @@ -31,11 +37,9 @@ public sealed class PlayerBarViewModel : ViewModelBase private readonly AudioEngine _audio; private readonly LibraryService _library; - private readonly DownloadService _downloads; private readonly IClipboardService _clipboard; private readonly YoutubeProvider _youtube; private readonly MusicLibraryManager _musicManager; - private readonly StreamCacheManager _cacheManager; private readonly DispatcherTimer _speedUpdateTimer; private readonly DispatcherTimer _fallbackPositionTimer; @@ -44,15 +48,39 @@ public sealed class PlayerBarViewModel : ViewModelBase private bool _isSeeking; private bool _justFinishedSeeking; - private bool _wasPlayingBeforeSeek; private bool _isInitialized; + private volatile bool _isSuspended; - private DateTime _lastSeekTime = DateTime.MinValue; private long _lastDownloadedBytes; private DateTime _lastSpeedCheck = DateTime.MinValue; - private int _lastVolumeBeforeMute = 50; + private WeakReference? _viewRef; + + /// + /// Монотонный счётчик сессий track reset. + /// Каждый BeginTrackReset увеличивает — EndTrackReset проверяет совпадение. + /// + private int _trackResetSession; + + /// + /// Время начала текущего reset — для минимальной длительности. + /// + private DateTime _trackResetStartTime; + + /// + /// ID трека, для которого ожидается первый StreamInfo. + /// Пока StreamInfo не пришёл — EndTrackReset не вызывается из buffer events. + /// + private string? _pendingStreamInfoTrackId; + + /// + /// ID текущего трека, для которого принимаем PositionChanged. + /// Все position events с другим trackId игнорируются. + /// Устанавливается в HandleTrackChanged, проверяется в position observable. + /// + private string? _activeTrackId; + #endregion #region Properties - Playback State @@ -64,6 +92,7 @@ public sealed class PlayerBarViewModel : ViewModelBase [Reactive] public bool HasTrack { get; private set; } [Reactive] public bool IsLiked { get; private set; } [Reactive] public bool IsNavigating { get; private set; } + [Reactive] public bool IsTrackResetting { get; private set; } public string SafeTitle => CurrentTrack?.Title ?? L["Player_NotPlaying"]; public string SafeAuthor => CurrentTrack?.Author ?? ""; @@ -87,12 +116,20 @@ public sealed class PlayerBarViewModel : ViewModelBase [Reactive] public TimeSpan Duration { get; private set; } [Reactive] public double PositionSeconds { get; set; } [Reactive] public double DurationSeconds { get; private set; } - [Reactive] public double BufferedSeconds { get; private set; } [Reactive] public bool IsSeekBusy { get; private set; } [Reactive] public bool IsSeekPreviewVisible { get; set; } #endregion + #region Properties - Buffer Progress + + [Reactive] public double BufferProgressPercent { get; private set; } + [Reactive] public IReadOnlyList<(double Start, double End)> BufferedRanges { get; private set; } = []; + public bool UseSegmentedBuffer => BufferedRanges.Count > 1; + [Reactive] public bool IsFullyBuffered { get; private set; } + + #endregion + #region Properties - Volume [Reactive] public int Volume { get; set; } @@ -100,11 +137,40 @@ public sealed class PlayerBarViewModel : ViewModelBase [Reactive] public bool IsVolumePopupOpen { get; set; } [Reactive] public bool IsVolumePreviewVisible { get; set; } + public float RealGain => _audio.GetVolume() > 0 + ? Math.Clamp(_audio.GetVolume() / 100f, 0f, 4f) + : 0f; + + public bool IsReallyBoosted + { + get + { + var settings = _library.Settings.Audio; + if (!settings.VolumeBoostEnabled) return false; + return Volume > AudioEngine.VolumeNormalRange; + } + } + public bool IsMuted => Volume < 1; - public bool IsVolumeLow => Volume >= 1 && Volume <= 33; - public bool IsVolumeMedium => Volume > 33 && Volume <= 66; - public bool IsVolumeHigh => Volume > 66 && Volume <= 100; - public bool IsVolumeBoosted => Volume > 100; + public bool IsVolumeLow => Volume >= 1 && !IsReallyBoosted && GetEffectivePercent() <= 33; + public bool IsVolumeMedium => !IsMuted && !IsReallyBoosted && GetEffectivePercent() > 33 && GetEffectivePercent() <= 66; + public bool IsVolumeHigh => !IsMuted && !IsReallyBoosted && GetEffectivePercent() > 66; + public bool IsVolumeBoosted => IsReallyBoosted; + + private int GetEffectivePercent() + { + var settings = _library.Settings.Audio; + + if (settings.VolumeBoostEnabled) + { + return Volume <= AudioEngine.VolumeNormalRange + ? (int)(Volume / 2.0) + : 100; + } + + int maxVol = MaxVolume > 0 ? MaxVolume : 100; + return (int)((double)Volume / maxVol * 100); + } public IBrush VolumePercentBrush { @@ -113,21 +179,17 @@ public IBrush VolumePercentBrush var app = Application.Current; if (app == null) return Brushes.White; - if (Volume > 100) + if (IsReallyBoosted) { if (app.Resources.TryGetResource("SystemWarnOrangeBrush", app.ActualThemeVariant, out var warnBrush) && warnBrush is IBrush warn) - { return warn; - } return new SolidColorBrush(Color.Parse("#FFB86C")); } if (app.Resources.TryGetResource("TextPrimaryBrush", app.ActualThemeVariant, out var textBrush) && textBrush is IBrush text) - { return text; - } return Brushes.White; } } @@ -138,7 +200,6 @@ public IBrush VolumePercentBrush [Reactive] public bool ShuffleEnabled { get; private set; } [Reactive] public RepeatMode RepeatMode { get; set; } - [Reactive] public bool IsRepeatHintVisible { get; private set; } [Reactive] public string RepeatHintText { get; private set; } = ""; @@ -148,7 +209,6 @@ public IBrush VolumePercentBrush [Reactive] public bool IsLikeHintVisible { get; private set; } [Reactive] public string LikeHintText { get; private set; } = ""; - [Reactive] public bool IsCopyHintVisible { get; private set; } [Reactive] public bool IsCopyHighlighted { get; private set; } @@ -192,29 +252,22 @@ public IBrush VolumePercentBrush ? L.Get("Player_Unmute", "Unmute") : L.Get("Player_Mute", "Mute"); - /// - /// Тултип для номера трека: "Трек X из Y" - /// public string TrackNumberTooltip => string.Format( L.Get("Player_TrackNumber", "Track {0} of {1}"), CurrentTrackIndex + 1, TotalTracksInQueue); - /// - /// Тултип для длительности: "Длительность: X:XX / Y:YY" или "Загрузка..." - /// public string DurationTooltip { get { if (IsLoading || DurationSeconds <= 0) - { return L.Get("Player_Loading_Duration", "Loading duration..."); - } - string posStr = FormatTime(Position); - string durStr = FormatTime(Duration); - return string.Format(L.Get("Player_Duration", "Duration: {0} / {1}"), posStr, durStr); + return string.Format( + L.Get("Player_Duration", "Duration: {0} / {1}"), + FormatTime(Position), + FormatTime(Duration)); } } @@ -240,19 +293,15 @@ public string DurationTooltip public PlayerBarViewModel( AudioEngine audio, LibraryService library, - DownloadService downloads, IClipboardService clipboard, YoutubeProvider youtube, - MusicLibraryManager musicManager, - StreamCacheManager cacheManager) + MusicLibraryManager musicManager) { _audio = audio; _library = library; - _downloads = downloads; _clipboard = clipboard; _youtube = youtube; _musicManager = musicManager; - _cacheManager = cacheManager; MaxVolume = 100; Volume = 50; @@ -261,122 +310,127 @@ public PlayerBarViewModel( RepeatMode = RepeatMode.None; UpdateQueueState(); - Log.Debug("[PlayerBar] Created with default values, waiting for initialization..."); + Log.Debug("[PlayerBar] Created, waiting for initialization..."); LocalizationService.Instance.LanguageChanged += OnLanguageChanged; // ИНИЦИАЛИЗАЦИЯ ИЗ НАСТРОЕК - Observable.FromEvent( - h => _library.OnInitialized += h, - h => _library.OnInitialized -= h) + h => _library.OnInitialized += h, + h => _library.OnInitialized -= h) .Take(1) .ObserveOn(RxApp.MainThreadScheduler) .Subscribe(_ => OnLibraryInitialized()) .DisposeWith(Disposables); // AUDIO ENGINE EVENTS - - Observable.FromEvent, (bool, bool)>( - h => (p, u) => h((p, u)), - h => _audio.OnPlaybackStateChanged += h, - h => _audio.OnPlaybackStateChanged -= h) + Observable.FromEvent, (bool Playing, bool Paused)>( + h => (p, u) => h((p, u)), + h => _audio.OnPlaybackStateChanged += h, + h => _audio.OnPlaybackStateChanged -= h) .ObserveOn(RxApp.MainThreadScheduler) .Subscribe(state => { - SyncPlaybackState(state.Item1, state.Item2); + SyncPlaybackState(state.Playing, state.Paused); this.RaisePropertyChanged(nameof(PlayPauseTooltip)); }) .DisposeWith(Disposables); Observable.FromEvent( - h => _audio.OnQueueChanged += h, - h => _audio.OnQueueChanged -= h) + h => _audio.OnQueueChanged += h, + h => _audio.OnQueueChanged -= h) .ObserveOn(RxApp.MainThreadScheduler) .Subscribe(_ => UpdateQueueState()) .DisposeWith(Disposables); - // Throttle position updates для экономии CPU Observable.FromEvent, TimeSpan>( - h => _audio.OnPositionChanged += h, - h => _audio.OnPositionChanged -= h) + h => _audio.OnSeekCompleted += h, + h => _audio.OnSeekCompleted -= h) + .ObserveOn(RxApp.MainThreadScheduler) + .Subscribe(_ => + { + if (!_isSuspended) + ForceUpdateBufferProgress(); + }) + .DisposeWith(Disposables); + + // Position — фильтруем по activeTrackId кроме стандартных фильтров + Observable.FromEvent, TimeSpan>( + h => _audio.OnPositionChanged += h, + h => _audio.OnPositionChanged -= h) + .Where(_ => !_isSuspended && !_isSeeking && !_justFinishedSeeking && !IsTrackResetting) .Throttle(TimeSpan.FromMilliseconds(PositionUpdateThrottleMs)) .ObserveOn(RxApp.MainThreadScheduler) .Subscribe(pos => { - if (!_isSeeking && !_justFinishedSeeking) - { - Position = pos; - PositionSeconds = pos.TotalSeconds; - this.RaisePropertyChanged(nameof(DurationTooltip)); - } + if (_isSeeking || _justFinishedSeeking || _isSuspended || IsTrackResetting) return; + + Position = pos; + PositionSeconds = pos.TotalSeconds; + this.RaisePropertyChanged(nameof(DurationTooltip)); + if (IsSeekBusy && !IsLoading) - { IsSeekBusy = false; - } }) .DisposeWith(Disposables); + // MaxVolume — с дедупликацией Observable.FromEvent, int>( - h => _audio.OnMaxVolumeChanged += h, - h => _audio.OnMaxVolumeChanged -= h) + h => _audio.OnMaxVolumeChanged += h, + h => _audio.OnMaxVolumeChanged -= h) + .DistinctUntilChanged() .ObserveOn(RxApp.MainThreadScheduler) .Subscribe(HandleMaxVolumeChanged) .DisposeWith(Disposables); Observable.FromEvent, TrackInfo?>( - h => _audio.OnTrackChanged += h, - h => _audio.OnTrackChanged -= h) + h => _audio.OnTrackChanged += h, + h => _audio.OnTrackChanged -= h) .ObserveOn(RxApp.MainThreadScheduler) .Subscribe(HandleTrackChanged) .DisposeWith(Disposables); - Observable.FromEvent( - h => _audio.OnStreamInfoReady += h, - h => _audio.OnStreamInfoReady -= h) + // StreamInfo — НЕ обновляем Duration в suspended + Observable.FromEvent, AudioStreamInfo>( + h => _audio.OnStreamInfoChanged += h, + h => _audio.OnStreamInfoChanged -= h) .ObserveOn(RxApp.MainThreadScheduler) - .Subscribe(_ => UpdateStreamInfo()) + .Subscribe(UpdateStreamInfo) .DisposeWith(Disposables); - // CACHE & LIBRARY EVENTS + // Buffer — полностью игнорируем в suspended + Observable.FromEvent, BufferState>( + h => _audio.OnBufferStateChanged += h, + h => _audio.OnBufferStateChanged -= h) + .Where(_ => !_isSuspended) + .Throttle(TimeSpan.FromMilliseconds(BufferUpdateIntervalMs)) + .ObserveOn(RxApp.MainThreadScheduler) + .Subscribe(HandleBufferStateChanged) + .DisposeWith(Disposables); - Observable.FromEvent, (string, string, int, bool)>( - h => (t, c, b, d) => h((t, c, b, d)), - h => _cacheManager.OnFormatCached += h, - h => _cacheManager.OnFormatCached -= h) - .Subscribe(x => OnFormatCached(x.Item1, x.Item2, x.Item3, x.Item4)) + // CACHE & LIBRARY EVENTS + var cacheManager = AudioSourceFactory.GlobalCache ?? throw new NullReferenceException("AudioSourceFactory.GlobalCache is not initialized"); + Observable.FromEvent, (string TrackId, string Container, int Bitrate, bool Downloaded)>( + h => (t, c, b, d) => h((t, c, b, d)), + h => cacheManager.OnFormatCached += h, + h => cacheManager.OnFormatCached -= h) + .Subscribe(x => OnFormatCached(x.TrackId, x.Container, x.Bitrate, x.Downloaded)) .DisposeWith(Disposables); Observable.FromEvent, TrackInfo>( - h => _library.OnTrackUpdated += h, - h => _library.OnTrackUpdated -= h) + h => _library.OnTrackUpdated += h, + h => _library.OnTrackUpdated -= h) .Where(t => CurrentTrack != null && t.Id == CurrentTrack.Id) .ObserveOn(RxApp.MainThreadScheduler) .Subscribe(t => { IsLiked = t.IsLiked; - if (CurrentTrack != null) CurrentTrack.IsLiked = t.IsLiked; + CurrentTrack?.IsLiked = t.IsLiked; this.RaisePropertyChanged(nameof(LikeTooltip)); }) .DisposeWith(Disposables); - Observable.FromEvent, (string, float)>( - h => (id, p) => h((id, p)), - h => _downloads.OnProgress += h, - h => _downloads.OnProgress -= h) - .Sample(TimeSpan.FromMilliseconds(200)) - .ObserveOn(RxApp.MainThreadScheduler) - .Subscribe(x => - { - if (CurrentTrack?.Id == x.Item1) - { - BufferedSeconds = DurationSeconds * x.Item2; - } - }) - .DisposeWith(Disposables); - // VOLUME BINDING - this.WhenAnyValue(x => x.Volume) .Subscribe(v => { @@ -384,9 +438,7 @@ public PlayerBarViewModel( RaiseVolumePropertiesChanged(); if (_isInitialized && v > 0) - { _library.UpdateSettings(s => s.LastVolume = v); - } }) .DisposeWith(Disposables); @@ -398,26 +450,25 @@ public PlayerBarViewModel( .Subscribe(_ => this.RaisePropertyChanged(nameof(LikeTooltip))) .DisposeWith(Disposables); - // Обновляем тултипы при изменении индекса/количества this.WhenAnyValue(x => x.CurrentTrackIndex, x => x.TotalTracksInQueue) .Subscribe(_ => this.RaisePropertyChanged(nameof(TrackNumberTooltip))) .DisposeWith(Disposables); Observable.FromEvent, bool>( - h => _audio.OnLoadingStateChanged += h, - h => _audio.OnLoadingStateChanged -= h) + h => _audio.OnLoadingStateChanged += h, + h => _audio.OnLoadingStateChanged -= h) .ObserveOn(RxApp.MainThreadScheduler) .Subscribe(loading => { IsLoading = loading; IsSeekBusy = loading; - this.RaisePropertyChanged(nameof(DurationTooltip)); + if (!_isSuspended) + this.RaisePropertyChanged(nameof(DurationTooltip)); }) .DisposeWith(Disposables); - // TIMERS - с оптимизацией - - _fallbackPositionTimer = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(500) }; + // TIMERS + _fallbackPositionTimer = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(FallbackPositionIntervalMs) }; _fallbackPositionTimer.Tick += (_, _) => FallbackPositionUpdate(); _fallbackPositionTimer.Start(); @@ -426,7 +477,6 @@ public PlayerBarViewModel( _speedUpdateTimer.Start(); // NAVIGATION SUBJECTS - _nextSubject .Throttle(TimeSpan.FromMilliseconds(NavigationDebounceMs)) .ObserveOn(RxApp.MainThreadScheduler) @@ -448,14 +498,13 @@ public PlayerBarViewModel( .DisposeWith(Disposables); // COMMANDS - - var canNavigate = this.WhenAnyValue(x => x.HasTrack, x => x.IsNavigating, x => x.IsLoading, + var canNavigate = this.WhenAnyValue( + x => x.HasTrack, x => x.IsNavigating, x => x.IsLoading, (hasTrack, isNav, loading) => hasTrack && !isNav && !loading); PlayPauseCommand = CreateCommand(ReactiveCommand.CreateFromTask(async () => { - bool wantsToPlay = !_audio.IsPlaying; - await _audio.SetPlaybackStateAsync(wantsToPlay); + await _audio.SetPlaybackStateAsync(!_audio.IsPlaying); }, this.WhenAnyValue(x => x.HasTrack))); NextCommand = CreateCommand(ReactiveCommand.Create(() => @@ -470,7 +519,8 @@ public PlayerBarViewModel( _prevSubject.OnNext(Unit.Default); }, canNavigate)); - var canShuffle = this.WhenAnyValue(x => x.HasQueueToShuffle, x => x.IsLoading, + var canShuffle = this.WhenAnyValue( + x => x.HasQueueToShuffle, x => x.IsLoading, (hasTracks, loading) => hasTracks && !loading); ShuffleQueueCommand = CreateCommand(ReactiveCommand.Create(() => @@ -502,16 +552,16 @@ public PlayerBarViewModel( { if (IsMuted) { - int restoreVolume = _lastVolumeBeforeMute > 0 ? _lastVolumeBeforeMute : 50; + int restoreVolume = Math.Min( + _lastVolumeBeforeMute > 0 ? _lastVolumeBeforeMute : 50, + MaxVolume); Volume = restoreVolume; - Log.Debug($"[PlayerBar] Unmuted, restored volume: {restoreVolume}"); } else { _lastVolumeBeforeMute = Volume; _library.UpdateSettings(s => s.LastVolume = Volume); Volume = 0; - Log.Debug($"[PlayerBar] Muted, saved volume: {_lastVolumeBeforeMute}"); } OnVolumeChangeComplete(); })); @@ -541,206 +591,176 @@ public PlayerBarViewModel( if (option == null) return; foreach (var f in AvailableFormats) f.IsActive = false; option.IsActive = true; + BeginTrackReset(); await _audio.SwitchQualityAsync(option.Container, (int)option.Bitrate); })); } - #endregion - - #region Helpers - - private static string FormatTime(TimeSpan time) + internal void RegisterView(PlayerBarView view) { - return time.TotalHours >= 1 - ? time.ToString(@"h\:mm\:ss") - : time.ToString(@"m\:ss"); + _viewRef = new WeakReference(view); } #endregion - #region Initialization + #region Buffer Progress - private void OnLibraryInitialized() + private void HandleBufferStateChanged(BufferState state) { - var settings = _library.Settings; - - int newMax = settings.MaxVolumeLimit < 100 ? 100 : settings.MaxVolumeLimit; - MaxVolume = newMax; + // Во время reset — ПОЛНОСТЬЮ ИГНОРИРУЕМ буферные данные. + // EndTrackReset будет вызван ТОЛЬКО из UpdateStreamInfo когда придёт + // валидный StreamInfo для НОВОГО трека. + if (IsTrackResetting) + return; - int savedVolume = settings.LastVolume; - if (savedVolume > 0 && savedVolume <= MaxVolume) - { - Volume = savedVolume; - _lastVolumeBeforeMute = savedVolume; - } - else if (savedVolume > MaxVolume) + if (CurrentTrack?.IsDownloaded == true) { - Volume = MaxVolume; - _lastVolumeBeforeMute = MaxVolume; - } - else - { - Volume = 50; - _lastVolumeBeforeMute = 50; + if (!IsFullyBuffered) + { + BufferProgressPercent = 100; + BufferedRanges = [(0.0, 1.0)]; + IsFullyBuffered = true; + this.RaisePropertyChanged(nameof(UseSegmentedBuffer)); + } + return; } - ShuffleEnabled = settings.ShuffleEnabled; - RepeatMode = settings.RepeatMode; - _audio.RepeatMode = RepeatMode; - - _audio.SetVolumeInstant(Volume); + BufferProgressPercent = state.Progress; + IsFullyBuffered = state.IsFullyBuffered; - _isInitialized = true; - RaiseVolumePropertiesChanged(); - UpdateQueueState(); - - Log.Info($"[PlayerBar] Initialized from settings: MaxVol={MaxVolume}, Vol={Volume}, Repeat={RepeatMode}, Shuffle={ShuffleEnabled}"); + if (!RangesEqual(BufferedRanges, state.Ranges)) + { + BufferedRanges = state.Ranges; + this.RaisePropertyChanged(nameof(UseSegmentedBuffer)); + } } - #endregion + private static bool RangesEqual( + IReadOnlyList<(double Start, double End)> a, + IReadOnlyList<(double Start, double End)> b) + { + if (ReferenceEquals(a, b)) return true; + if (a.Count != b.Count) return false; - #region Volume Helpers + for (int i = 0; i < a.Count; i++) + { + if (Math.Abs(a[i].Start - b[i].Start) > 0.001 || + Math.Abs(a[i].End - b[i].End) > 0.001) + return false; + } - private void RaiseVolumePropertiesChanged() - { - this.RaisePropertyChanged(nameof(IsMuted)); - this.RaisePropertyChanged(nameof(IsVolumeLow)); - this.RaisePropertyChanged(nameof(IsVolumeMedium)); - this.RaisePropertyChanged(nameof(IsVolumeHigh)); - this.RaisePropertyChanged(nameof(IsVolumeBoosted)); - this.RaisePropertyChanged(nameof(VolumePercentBrush)); - this.RaisePropertyChanged(nameof(MuteTooltip)); + return true; } - #endregion + private void ForceUpdateBufferProgress() + { + if (!HasTrack || CurrentTrack == null) return; + if (IsTrackResetting) return; - #region Language Change Handler + if (CurrentTrack.IsDownloaded) + { + BufferProgressPercent = 100; + BufferedRanges = [(0.0, 1.0)]; + IsFullyBuffered = true; + } + else + { + BufferProgressPercent = _audio.BufferProgress; + BufferedRanges = _audio.GetBufferedRanges(); + IsFullyBuffered = _audio.IsFullyBuffered; + } - private void OnLanguageChanged(object? sender, string newLang) - { - this.RaisePropertyChanged(nameof(ShuffleTooltip)); - this.RaisePropertyChanged(nameof(PreviousTooltip)); - this.RaisePropertyChanged(nameof(NextTooltip)); - this.RaisePropertyChanged(nameof(PlayPauseTooltip)); - this.RaisePropertyChanged(nameof(RepeatTooltip)); - this.RaisePropertyChanged(nameof(LikeTooltip)); - this.RaisePropertyChanged(nameof(CopyTooltip)); - this.RaisePropertyChanged(nameof(MuteTooltip)); - this.RaisePropertyChanged(nameof(SafeTitle)); - this.RaisePropertyChanged(nameof(TrackNumberTooltip)); - this.RaisePropertyChanged(nameof(DurationTooltip)); + this.RaisePropertyChanged(nameof(UseSegmentedBuffer)); } #endregion - #region Format Loading + #region Track Reset Visual - private async Task LoadFormatsAsync() + private void BeginTrackReset() { - if (CurrentTrack == null) return; + int session = Interlocked.Increment(ref _trackResetSession); + _trackResetStartTime = DateTime.UtcNow; - try - { - string videoId = CurrentTrack.Id.Replace("yt_", ""); - var formats = await _youtube.GetStreamOptionsAsync(videoId); - - var (currentFormat, currentBitrate, _) = _audio.GetCurrentStreamInfo(); - var cachedFormats = _cacheManager.GetCachedFormats(CurrentTrack.Id); - - AvailableFormats.Clear(); - - foreach (var f in formats) - { - f.IsDownloaded = cachedFormats.Any(cached => - string.Equals(f.Container, cached.Container, StringComparison.OrdinalIgnoreCase) && - (int)f.Bitrate == cached.Bitrate); + IsTrackResetting = true; - if (!f.IsDownloaded) - { - f.IsDownloaded = _cacheManager.IsFormatCached(CurrentTrack.Id, f.Container, (int)f.Bitrate); - } + // Полный сброс ВСЕХ визуальных данных — прямо сейчас + BufferProgressPercent = 0; + BufferedRanges = []; + IsFullyBuffered = false; + Position = TimeSpan.Zero; + PositionSeconds = 0; + IsSeekBusy = true; - f.IsActive = string.Equals(f.Codec, currentFormat, StringComparison.OrdinalIgnoreCase) && - (int)f.Bitrate == currentBitrate; + this.RaisePropertyChanged(nameof(UseSegmentedBuffer)); + this.RaisePropertyChanged(nameof(BufferedRanges)); - AvailableFormats.Add(f); - } - Log.Debug($"Loaded {AvailableFormats.Count} formats, {cachedFormats.Count} cached"); - } - catch (Exception ex) - { - Log.Error($"LoadFormatsAsync error: {ex.Message}"); - } + Log.Debug($"[PlayerBar] BeginTrackReset: session={session}"); } - private void OnFormatCached(string trackId, string container, int bitrate, bool isDownloaded) + /// + /// Завершает reset. Вызывается ТОЛЬКО из UpdateStreamInfo когда приходит + /// валидный StreamInfo для нового трека. + /// Гарантирует минимальную длительность reset для плавности визуала. + /// + private async void EndTrackReset(int session) { - if (CurrentTrack == null || CurrentTrack.Id != trackId) - return; - - bool found = false; - foreach (var format in AvailableFormats) - { - if (string.Equals(format.Container, container, StringComparison.OrdinalIgnoreCase) && - (int)format.Bitrate == bitrate) - { - format.IsDownloaded = isDownloaded; - found = true; - break; - } - } - - if (!found && AvailableFormats.Count > 0) + // Гарантируем минимальную длительность reset-а + var elapsed = DateTime.UtcNow - _trackResetStartTime; + int remaining = TrackResetMinDurationMs - (int)elapsed.TotalMilliseconds; + if (remaining > 0) + await Task.Delay(remaining); + + // Проверяем что за время ожидания не начался новый reset + int currentSession = Volatile.Read(ref _trackResetSession); + if (currentSession != session) { - _ = LoadFormatsAsync(); + Log.Debug($"[PlayerBar] EndTrackReset skipped: session {session} != {currentSession}"); + return; } - if (isDownloaded) - { - UpdateStreamInfo(); - } + IsTrackResetting = false; + Log.Debug($"[PlayerBar] EndTrackReset: session={session}"); } #endregion - #region Hint Methods + #region Initialization - private async void ShowRepeatModeHint() + private void OnLibraryInitialized() { - RepeatHintText = RepeatMode switch - { - RepeatMode.None => L.Get("Player_Repeat_Off", "Repeat Off"), - RepeatMode.RepeatAll => L.Get("Player_Repeat_All", "Repeat Queue"), - RepeatMode.RepeatOne => L.Get("Player_Repeat_One", "Repeat Track"), - _ => "" - }; - - IsRepeatHintVisible = true; - await Task.Delay(HintDisplayDurationMs); - IsRepeatHintVisible = false; - } + var settings = _library.Settings; - private async void ShowLikeHint() - { - LikeHintText = IsLiked - ? L.Get("Track_Added", "Added to Liked") - : L.Get("Track_Removed", "Removed from Liked"); + int newMax = Math.Max(settings.MaxVolumeLimit, 100); + MaxVolume = newMax; - IsLikeHintVisible = true; - await Task.Delay(HintDisplayDurationMs); - IsLikeHintVisible = false; - } + int savedVolume = settings.LastVolume; + if (savedVolume > 0 && savedVolume <= MaxVolume) + { + Volume = savedVolume; + _lastVolumeBeforeMute = savedVolume; + } + else if (savedVolume > MaxVolume) + { + Volume = MaxVolume; + _lastVolumeBeforeMute = MaxVolume; + } + else + { + Volume = 50; + _lastVolumeBeforeMute = 50; + } - private async void ShowCopyHint() - { - IsCopyHighlighted = true; - IsCopyHintVisible = true; + ShuffleEnabled = settings.ShuffleEnabled; + RepeatMode = settings.RepeatMode; + _audio.RepeatMode = RepeatMode; + _audio.SetVolumeInstant(Volume); - await Task.Delay(CopyHighlightDurationMs); - IsCopyHighlighted = false; + _isInitialized = true; + RaiseVolumePropertiesChanged(); + UpdateQueueState(); - await Task.Delay(HintDisplayDurationMs - CopyHighlightDurationMs); - IsCopyHintVisible = false; + Log.Info($"[PlayerBar] Initialized: MaxVol={MaxVolume}, Vol={Volume}"); } #endregion @@ -749,18 +769,16 @@ private async void ShowCopyHint() private void HandleMaxVolumeChanged(int newMax) { + if (MaxVolume == newMax) return; + int oldMax = MaxVolume; MaxVolume = newMax; if (Volume > MaxVolume) - { Volume = MaxVolume; - } if (_lastVolumeBeforeMute > MaxVolume) - { _lastVolumeBeforeMute = MaxVolume; - } RaiseVolumePropertiesChanged(); Log.Info($"[PlayerBar] MaxVolume changed: {oldMax} -> {newMax}"); @@ -768,45 +786,62 @@ private void HandleMaxVolumeChanged(int newMax) private void HandleTrackChanged(TrackInfo? track) { + // Обновляем activeTrackId — position events от старого трека будут игнорироваться + _activeTrackId = track?.Id; + CurrentTrack = track; HasTrack = track != null; - IsNavigating = false; this.RaisePropertyChanged(nameof(SafeTitle)); this.RaisePropertyChanged(nameof(SafeAuthor)); this.RaisePropertyChanged(nameof(SafeThumbnail)); this.RaisePropertyChanged(nameof(PlayPauseTooltip)); - this.RaisePropertyChanged(nameof(DurationTooltip)); - IsSeekBusy = true; _lastDownloadedBytes = 0; - AvailableFormats.Clear(); if (track != null) { + _pendingStreamInfoTrackId = track.Id; + + // Начинаем визуальный reset — сбрасывает позицию, буферы, etc. + BeginTrackReset(); + Duration = track.Duration; DurationSeconds = Duration.TotalSeconds > 0 ? Duration.TotalSeconds : 1; var storedTrack = _library.GetTrack(track.Id); IsLiked = storedTrack?.IsLiked ?? track.IsLiked; - Position = TimeSpan.Zero; - PositionSeconds = 0; - BufferedSeconds = track.IsDownloaded ? DurationSeconds : 0; + if (track.IsDownloaded) + { + BufferProgressPercent = 100; + BufferedRanges = [(0.0, 1.0)]; + IsFullyBuffered = true; + } + ShowStreamInfo = true; StreamInfo = L.Get("Player_StreamInfo_Loading", "Loading..."); } else { + _pendingStreamInfoTrackId = null; + Duration = TimeSpan.Zero; DurationSeconds = 1; - PositionSeconds = 0; - BufferedSeconds = 0; ShowStreamInfo = false; StreamInfo = ""; IsLiked = false; + IsTrackResetting = false; + + BufferProgressPercent = 0; + BufferedRanges = []; + IsFullyBuffered = false; + Position = TimeSpan.Zero; + PositionSeconds = 0; } + this.RaisePropertyChanged(nameof(DurationTooltip)); + this.RaisePropertyChanged(nameof(UseSegmentedBuffer)); UpdateQueueState(); } @@ -818,7 +853,15 @@ private void UpdateQueueState() if (CurrentTrack != null) { - CurrentTrackIndex = queue.ToList().FindIndex(t => t.Id == CurrentTrack.Id); + CurrentTrackIndex = -1; + for (int i = 0; i < queue.Count; i++) + { + if (queue[i].Id == CurrentTrack.Id) + { + CurrentTrackIndex = i; + break; + } + } if (CurrentTrackIndex < 0) CurrentTrackIndex = 0; } else @@ -836,7 +879,7 @@ private void SyncPlaybackState(bool isPlaying, bool isPaused) IsPaused = isPaused; } - private void UpdateStreamInfo() + private void UpdateStreamInfo(AudioStreamInfo info) { if (CurrentTrack == null) { @@ -845,44 +888,60 @@ private void UpdateStreamInfo() return; } - var (format, bitrate, isReady) = _audio.GetCurrentStreamInfo(); - - if (!isReady || string.IsNullOrEmpty(format)) + if (info.IsValid) { - StreamInfo = L.Get("Player_StreamInfo_Loading", "Loading..."); - ShowStreamInfo = true; - return; - } + StreamInfo = info.FormatDisplay; - foreach (var f in AvailableFormats) - { - f.IsActive = string.Equals(f.Codec, format, StringComparison.OrdinalIgnoreCase) && - (int)f.Bitrate == bitrate; - } + // Обновляем Duration только если НЕ suspended + if (!_isSuspended) + { + Duration = TimeSpan.FromMilliseconds(info.DurationMs); + DurationSeconds = Duration.TotalSeconds > 0 ? Duration.TotalSeconds : 1; + this.RaisePropertyChanged(nameof(DurationTooltip)); + } - if (bitrate > 0) - { - StreamInfo = string.Format(L.Get("Stream_Format_Bitrate", "{0} • {1} kbps"), format, bitrate); + foreach (var f in AvailableFormats) + { + f.IsActive = string.Equals(f.Codec, info.Codec, StringComparison.OrdinalIgnoreCase) && + (int)f.Bitrate == info.Bitrate; + } + + // StreamInfo пришёл — это ЕДИНСТВЕННОЕ место где EndTrackReset вызывается. + // Проверяем что это StreamInfo для текущего трека. + if (IsTrackResetting) + { + bool isForCurrentTrack = !string.IsNullOrEmpty(info.TrackId) && + CurrentTrack.Id == info.TrackId; + + // Если TrackId в StreamInfo не заполнен — проверяем что + // _pendingStreamInfoTrackId совпадает с текущим треком + if (!isForCurrentTrack && string.IsNullOrEmpty(info.TrackId)) + isForCurrentTrack = _pendingStreamInfoTrackId == CurrentTrack.Id; + + if (isForCurrentTrack) + { + _pendingStreamInfoTrackId = null; + int session = Volatile.Read(ref _trackResetSession); + EndTrackReset(session); + } + } } else { - StreamInfo = format; - } - - if (CurrentTrack.IsDownloaded && !string.IsNullOrEmpty(CurrentTrack.LocalPath)) - { - StreamInfo += " " + L.Get("Stream_Downloaded_Mark", "✓"); + StreamInfo = L.Get("Player_StreamInfo_Loading", "Loading..."); } ShowStreamInfo = true; - this.RaisePropertyChanged(nameof(DurationTooltip)); } private void UpdateDownloadSpeed() { - if (!HasTrack || CurrentTrack?.IsDownloaded == true) + if (_isSuspended) return; + + if (!HasTrack || CurrentTrack?.IsDownloaded == true || IsFullyBuffered) { - DownloadSpeedText = ""; + if (DownloadSpeedText.Length > 0) + DownloadSpeedText = ""; return; } @@ -906,10 +965,10 @@ private void UpdateDownloadSpeed() private void FallbackPositionUpdate() { - if (!HasTrack || _isSeeking || _justFinishedSeeking) return; + if (!HasTrack || _isSeeking || _justFinishedSeeking || _isSuspended || IsTrackResetting) + return; var realDur = _audio.TotalDuration; - if (Math.Abs(DurationSeconds - realDur.TotalSeconds) > 1 && realDur.TotalSeconds > 0) { Duration = realDur; @@ -917,15 +976,11 @@ private void FallbackPositionUpdate() this.RaisePropertyChanged(nameof(DurationTooltip)); } - if (_audio.BufferProgress > 0) - { - BufferedSeconds = DurationSeconds * (_audio.BufferProgress / 100.0); - } - if (IsPlaying) { - Position = _audio.CurrentPosition; - PositionSeconds = Position.TotalSeconds; + var pos = _audio.CurrentPosition; + Position = pos; + PositionSeconds = pos.TotalSeconds; } } @@ -937,17 +992,12 @@ public void StartSeek() { _isSeeking = true; _justFinishedSeeking = false; - - _wasPlayingBeforeSeek = IsPlaying; - if (_wasPlayingBeforeSeek) - { - _ = _audio.SetPlaybackStateAsync(false); - } } public void UpdateSeekPosition(double seconds) { if (!_isSeeking) return; + seconds = Math.Clamp(seconds, 0, DurationSeconds); PositionSeconds = seconds; Position = TimeSpan.FromSeconds(seconds); @@ -966,21 +1016,10 @@ public async void EndSeek() _isSeeking = false; _justFinishedSeeking = true; - var delta = DateTime.UtcNow - _lastSeekTime; - if (delta.TotalMilliseconds < SeekCooldownMs) - await Task.Delay(SeekCooldownMs - (int)delta.TotalMilliseconds); - _lastSeekTime = DateTime.UtcNow; + _audio.SeekDebounced(TimeSpan.FromSeconds(target)); - IsSeekBusy = true; - await _audio.SeekAsync(TimeSpan.FromSeconds(target)); - await Task.Delay(300); - - if (_wasPlayingBeforeSeek) - { - await _audio.SetPlaybackStateAsync(true); - } - - IsSeekBusy = false; + await Task.Delay(SeekSettleDelayMs); + ForceUpdateBufferProgress(); _justFinishedSeeking = false; } @@ -988,21 +1027,197 @@ public void CancelSeek() { _isSeeking = false; _justFinishedSeeking = false; + } + + public void OnVolumeChangeComplete() + { + _audio.SaveVolumeNow(); + } - if (_wasPlayingBeforeSeek) + public int GetVolumeScrollStep() + { + if (MaxVolume <= 100) return 1; + return Math.Max(1, MaxVolume / 200); + } + + #endregion + + #region Volume Helpers + + private void RaiseVolumePropertiesChanged() + { + this.RaisePropertyChanged(nameof(IsMuted)); + this.RaisePropertyChanged(nameof(IsVolumeLow)); + this.RaisePropertyChanged(nameof(IsVolumeMedium)); + this.RaisePropertyChanged(nameof(IsVolumeHigh)); + this.RaisePropertyChanged(nameof(IsVolumeBoosted)); + this.RaisePropertyChanged(nameof(IsReallyBoosted)); + this.RaisePropertyChanged(nameof(VolumePercentBrush)); + this.RaisePropertyChanged(nameof(MuteTooltip)); + } + + #endregion + + #region Format Loading + + private async Task LoadFormatsAsync() + { + if (CurrentTrack == null) return; + + try { - _ = _audio.SetPlaybackStateAsync(true); + string videoId = CurrentTrack.Id.Replace("yt_", ""); + var formats = await _youtube.GetStreamOptionsAsync(videoId); + var (currentFormat, currentBitrate, _) = _audio.GetCurrentStreamInfo(); + + var cache = AudioSourceFactory.GlobalCache; + var cachedFormats = cache?.GetCachedFormats(CurrentTrack.Id) ?? []; + + AvailableFormats.Clear(); + + foreach (var f in formats) + { + // Проверяем наличие в кэше + f.IsDownloaded = cachedFormats.Any(cached => + string.Equals(f.Container, cached.Container, StringComparison.OrdinalIgnoreCase) && + Math.Abs((int)f.Bitrate - cached.Bitrate) <= 10); // ±10 kbps tolerance + + // Проверяем активность (текущее воспроизведение) + f.IsActive = string.Equals(f.Codec, currentFormat, StringComparison.OrdinalIgnoreCase) && + Math.Abs((int)f.Bitrate - currentBitrate) <= 10; + + AvailableFormats.Add(f); + } + + Log.Debug($"Loaded {AvailableFormats.Count} formats, {cachedFormats.Count} cached"); + } + catch (Exception ex) + { + Log.Error($"LoadFormatsAsync error: {ex.Message}"); } } - public void OnVolumeChangeComplete() + private void OnFormatCached(string trackId, string container, int bitrate, bool isDownloaded) { - _audio.SaveVolumeNow(); + if (CurrentTrack == null || CurrentTrack.Id != trackId) return; + + bool found = false; + foreach (var format in AvailableFormats) + { + if (string.Equals(format.Container, container, StringComparison.OrdinalIgnoreCase) && + (int)format.Bitrate == bitrate) + { + format.IsDownloaded = isDownloaded; + found = true; + break; + } + } + + if (!found && AvailableFormats.Count > 0) + _ = LoadFormatsAsync(); + } + + #endregion + + #region Hint Methods + + private async void ShowRepeatModeHint() + { + RepeatHintText = RepeatMode switch + { + RepeatMode.None => L.Get("Player_Repeat_Off", "Repeat Off"), + RepeatMode.RepeatAll => L.Get("Player_Repeat_All", "Repeat Queue"), + RepeatMode.RepeatOne => L.Get("Player_Repeat_One", "Repeat Track"), + _ => "" + }; + IsRepeatHintVisible = true; + await Task.Delay(HintDisplayDurationMs); + IsRepeatHintVisible = false; + } + + private async void ShowLikeHint() + { + LikeHintText = IsLiked + ? L.Get("Track_Added", "Added to Liked") + : L.Get("Track_Removed", "Removed from Liked"); + IsLikeHintVisible = true; + await Task.Delay(HintDisplayDurationMs); + IsLikeHintVisible = false; + } + + private async void ShowCopyHint() + { + IsCopyHighlighted = true; + IsCopyHintVisible = true; + await Task.Delay(CopyHighlightDurationMs); + IsCopyHighlighted = false; + await Task.Delay(HintDisplayDurationMs - CopyHighlightDurationMs); + IsCopyHintVisible = false; + } + + #endregion + + #region Language + + private void OnLanguageChanged(object? sender, string newLang) + { + this.RaisePropertyChanged(nameof(ShuffleTooltip)); + this.RaisePropertyChanged(nameof(PreviousTooltip)); + this.RaisePropertyChanged(nameof(NextTooltip)); + this.RaisePropertyChanged(nameof(PlayPauseTooltip)); + this.RaisePropertyChanged(nameof(RepeatTooltip)); + this.RaisePropertyChanged(nameof(LikeTooltip)); + this.RaisePropertyChanged(nameof(CopyTooltip)); + this.RaisePropertyChanged(nameof(MuteTooltip)); + this.RaisePropertyChanged(nameof(SafeTitle)); + this.RaisePropertyChanged(nameof(TrackNumberTooltip)); + this.RaisePropertyChanged(nameof(DurationTooltip)); } #endregion - #region IDisposable + #region Helpers + + private static string FormatTime(TimeSpan time) => + time.TotalHours >= 1 + ? time.ToString(@"h\:mm\:ss") + : time.ToString(@"m\:ss"); + + #endregion + + #region LifeCycle + + protected override void OnSuspend() + { + _isSuspended = true; + _fallbackPositionTimer.Stop(); + _speedUpdateTimer.Stop(); + + if (_viewRef?.TryGetTarget(out var view) == true) + view.OnSuspend(); + } + + protected override void OnResume() + { + _isSuspended = false; + _fallbackPositionTimer.Start(); + _speedUpdateTimer.Start(); + + // Подхватываем Duration которая могла прийти в suspended + var realDur = _audio.TotalDuration; + if (realDur.TotalSeconds > 0) + { + Duration = realDur; + DurationSeconds = Duration.TotalSeconds; + this.RaisePropertyChanged(nameof(DurationTooltip)); + } + + FallbackPositionUpdate(); + ForceUpdateBufferProgress(); + + if (_viewRef?.TryGetTarget(out var view) == true) + view.OnResume(); + } protected override void Dispose(bool disposing) { @@ -1011,9 +1226,7 @@ protected override void Dispose(bool disposing) LocalizationService.Instance.LanguageChanged -= OnLanguageChanged; if (_isInitialized && Volume > 0) - { _library.UpdateSettings(s => s.LastVolume = Volume); - } _audio.SaveVolumeNow(); _fallbackPositionTimer.Stop(); diff --git a/Features/Player/QueueViewModel.cs b/Features/Player/QueueViewModel.cs index d751fd4..c052e6a 100644 --- a/Features/Player/QueueViewModel.cs +++ b/Features/Player/QueueViewModel.cs @@ -26,6 +26,9 @@ public class QueueViewModel : ViewModelBase, IDisposable, IFilterable private bool _isDisposed; + // LIFECYCLE: Флаг для пропуска UI-обновлений когда окно свёрнуто + private volatile bool _isSuspended; + [Reactive] public bool IsEmpty { get; private set; } = true; [Reactive] public bool CanReorderItems { get; private set; } = true; [Reactive] public string FilterQuery { get; set; } = string.Empty; @@ -67,7 +70,7 @@ public QueueViewModel( MoveItem(tuple.oldIndex, tuple.newIndex); })); - // Use DisposeWith to prevent memory leaks! + // ИЗМЕНЕНО: Добавлена проверка _isSuspended для пропуска UI-обновлений Observable.FromEvent( h => _audio.OnQueueChanged += h, h => _audio.OnQueueChanged -= h) @@ -75,6 +78,9 @@ public QueueViewModel( .ObserveOn(RxApp.MainThreadScheduler) .Subscribe(_ => { + // LIFECYCLE: Пропускаем обновления когда окно свёрнуто + if (_isSuspended) return; + if (!_isMovingInternally) { RefreshFromAudioEngine(); @@ -82,11 +88,18 @@ public QueueViewModel( }) .DisposeWith(Disposables); + // ИЗМЕНЕНО: Добавлена проверка _isSuspended Observable.FromEvent, TrackInfo?>( h => _audio.OnTrackChanged += h, h => _audio.OnTrackChanged -= h) .ObserveOn(RxApp.MainThreadScheduler) - .Subscribe(_ => UpdateActiveStates()) + .Subscribe(_ => + { + // LIFECYCLE: Пропускаем обновления когда окно свёрнуто + if (_isSuspended) return; + + UpdateActiveStates(); + }) .DisposeWith(Disposables); this.WhenAnyValue(x => x.FilterQuery) @@ -94,6 +107,8 @@ public QueueViewModel( .ObserveOn(RxApp.MainThreadScheduler) .Subscribe(_ => { + // Фильтрация может сработать только при активном окне + // (пользователь вводит текст), проверка не нужна CanReorderItems = string.IsNullOrWhiteSpace(FilterQuery); RebuildVisibleItems(); }) @@ -102,6 +117,33 @@ public QueueViewModel( RefreshFromAudioEngine(); } + // LIFECYCLE IMPLEMENTATION + + /// + /// Окно свёрнуто — пропускаем UI-обновления от событий AudioEngine. + /// Очередь продолжает работать, но UI не обновляется. + /// + protected override void OnSuspend() + { + _isSuspended = true; + Log.Debug($"[{GetType().Name}] Suspended — UI updates paused"); + } + + /// + /// Окно развёрнуто — синхронизируем UI с актуальным состоянием очереди. + /// + protected override void OnResume() + { + _isSuspended = false; + + // Синхронизируем данные которые могли измениться пока окно было свёрнуто + // (треки могли проигрываться, очередь могла измениться) + RefreshFromAudioEngine(); + + Log.Debug($"[{GetType().Name}] Resumed — UI synchronized"); + } + + private void RefreshFromAudioEngine() { _masterQueue = [.. _audio.Queue]; @@ -223,7 +265,6 @@ protected override void Dispose(bool disposing) { Log.Debug("[QueueVM] Disposing"); - // Dispose all cached ViewModels foreach (var vm in _vmCache.Values) vm.Dispose(); diff --git a/Features/Playlist/PlaylistViewModel.cs b/Features/Playlist/PlaylistViewModel.cs index dd14646..0af0a20 100644 --- a/Features/Playlist/PlaylistViewModel.cs +++ b/Features/Playlist/PlaylistViewModel.cs @@ -1,4 +1,5 @@ using Avalonia.Controls; +using LMP.Core.Audio; using LMP.Core.Helpers; using LMP.Core.Models; using LMP.Core.Services; @@ -16,7 +17,6 @@ public sealed class PlaylistViewModel : ReorderableViewModel? _allTracksCache; private bool _allTracksCacheValid; + // LIFECYCLE: Флаг для пропуска UI-обновлений когда окно свёрнуто + private volatile bool _isSuspended; + #endregion #region Properties @@ -98,14 +101,12 @@ public GridLength HeaderHeight #region Constructor public PlaylistViewModel( - StreamCacheManager cacheManager, AudioEngine audio, DownloadService downloads, MusicLibraryManager manager, IDialogService dialog, TrackViewModelFactory vmFactory) { - _cacheManager = cacheManager; _audio = audio; _downloads = downloads; _manager = manager; @@ -120,9 +121,6 @@ public PlaylistViewModel( var hasTracks = this.WhenAnyValue(x => x.TrackCount, c => c > 0); - // FIX: ThrownExceptions subscription to prevent memory leak - // Используем CreateCommand из ReorderableViewModel - PlayAllCommand = CreateCommand(ReactiveCommand.CreateFromTask(PlayAllAsync, hasTracks)); DeletePlaylistCommand = CreateCommand(ReactiveCommand.CreateFromTask(async () => @@ -176,6 +174,7 @@ public PlaylistViewModel( }) .DisposeWith(Disposables); + // ИЗМЕНЕНО: Добавлена проверка _isSuspended для пропуска UI-обновлений _librarySubscription = Observable.FromEvent( h => LibService.OnDataChanged += h, h => LibService.OnDataChanged -= h) @@ -183,6 +182,9 @@ public PlaylistViewModel( .ObserveOn(RxApp.MainThreadScheduler) .Subscribe(async _ => { + // LIFECYCLE: Пропускаем обновления когда окно свёрнуто + if (_isSuspended) return; + if ((DateTime.Now - _lastMoveTime).TotalMilliseconds < MoveDebounceMs) { Log.Debug("[Playlist] Ignoring OnDataChanged (recent move)"); @@ -197,29 +199,71 @@ public PlaylistViewModel( } }); + // ИЗМЕНЕНО: Добавлена проверка _isSuspended _audioStateSub = Observable.FromEvent, (bool, bool)>( h => (p, u) => h((p, u)), h => _audio.OnPlaybackStateChanged += h, h => _audio.OnPlaybackStateChanged -= h) .ObserveOn(RxApp.MainThreadScheduler) - .Subscribe(async _ => await CheckPlaybackStateAsync()); + .Subscribe(async _ => + { + // LIFECYCLE: Пропускаем обновления когда окно свёрнуто + if (_isSuspended) return; + await CheckPlaybackStateAsync(); + }); + + // ИЗМЕНЕНО: Добавлена проверка _isSuspended _trackChangeSub = Observable.FromEvent, TrackInfo?>( h => _audio.OnTrackChanged += h, h => _audio.OnTrackChanged -= h) .ObserveOn(RxApp.MainThreadScheduler) - .Subscribe(async _ => await CheckPlaybackStateAsync()); + .Subscribe(async _ => + { + // LIFECYCLE: Пропускаем обновления когда окно свёрнуто + if (_isSuspended) return; + + await CheckPlaybackStateAsync(); + }); } #endregion + // LIFECYCLE IMPLEMENTATION + + /// + /// Окно свёрнуто — пропускаем UI-обновления от событий. + /// Музыка продолжает играть, но UI не обновляется. + /// + protected override void OnSuspend() + { + _isSuspended = true; + } + + /// + /// Окно развёрнуто — синхронизируем UI с актуальным состоянием. + /// + protected override void OnResume() + { + _isSuspended = false; + + // Синхронизируем состояние воспроизведения (трек мог смениться) + _ = CheckPlaybackStateAsync(); + + // Инвалидируем кэш — данные могли измениться + InvalidateAllTracksCache(); + + // Обновляем UI-свойства + this.RaisePropertyChanged(nameof(FormattedTrackCount)); + } + + #region Abstract Implementation protected override string GetItemId(TrackInfo item) => item.Id; protected override TrackItemViewModel CreateViewModel(TrackInfo item) { - // Фабрика сама использует TrackRegistry! var vm = _vmFactory.GetOrCreate(item, PlayFromPlaylistAsync); vm.SourceContextId = _currentPlaylistId; vm.IsPlaylistContext = CanEdit; @@ -238,14 +282,13 @@ protected override TrackItemViewModel CreateViewModel(TrackInfo item) return vm; } - // Используем общий хелпер для DRY protected override bool MatchesFilter(TrackInfo item, string query) => TrackFilters.MatchesTitleOrAuthor(item, query); protected override async Task> LoadItemsByIdsAsync( IEnumerable ids, CancellationToken ct) { - var idsList = ids.ToList(); // Enumerate once + var idsList = ids.ToList(); return await LibService.GetPlaylistTracksAsync( _currentPlaylistId, limit: idsList.Count, @@ -264,9 +307,6 @@ protected override async Task SaveMoveAsync(int fromMasterIndex, int toMasterInd #region All Tracks Helper (DRY) - /// - /// Загружает все треки плейлиста (с кэшированием). - /// private async Task> GetAllTracksAsync() { if (_allTracksCacheValid && _allTracksCache != null) @@ -329,23 +369,10 @@ private async Task HydrateCacheStatusInBackgroundAsync() try { var tracks = GetLoadedItemsSnapshot(); - await Task.Run(() => - { - foreach (var track in tracks) - { - if (!track.IsDownloaded && !track.IsCached) - { - if (_cacheManager.IsFullyCached(track.Id)) - { - var meta = StreamCacheManager.TryGetMetadata(track.Id); - if (meta != null) - track.MarkAsCached(meta.Container, meta.Bitrate); - else - track.IsCached = true; - } - } - } - }); + var audioCache = AudioSourceFactory.GlobalCache; + if (audioCache == null) return; + + await Task.Run(() => audioCache.HydrateCacheStatus(tracks)); } catch (Exception ex) { @@ -502,7 +529,7 @@ protected override void Dispose(bool disposing) InvalidateAllTracksCache(); } - base.Dispose(disposing); // Вызовет ReorderableViewModel.Dispose(bool), который очистит _vmCache + base.Dispose(disposing); } #endregion diff --git a/Features/Search/SearchViewModel.cs b/Features/Search/SearchViewModel.cs index 1d475ce..1b395e0 100644 --- a/Features/Search/SearchViewModel.cs +++ b/Features/Search/SearchViewModel.cs @@ -11,6 +11,7 @@ using ReactiveUI.Fody.Helpers; using LMP.Core.Helpers; using System.Reactive.Disposables; +using LMP.Core.Audio; namespace LMP.Features.Search; @@ -24,13 +25,11 @@ public sealed class SearchViewModel : PaginatedViewModel /// Конвертирует ContentSource в SearchFilter для YouTube API. /// @@ -217,9 +206,7 @@ protected override async Task> FetchMoreFromNetworkAsync(Cancell if (newTracks.Count > 0) { - // ИСПРАВЛЕНИЕ #3: Проверка наличия трека в полном кэше - // ChunkCacheService (StreamCacheManager) знает, скачан ли файл полностью - _streamCache.HydrateCacheStatus(newTracks); + AudioSourceFactory.GlobalCache?.HydrateCacheStatus(newTracks); if (LibService.Settings.EnableSearchCache) { @@ -303,7 +290,6 @@ private async Task ExecuteSearchAsync(bool forceNetwork) HasResults = false; _currentQuery = SearchQuery.Trim(); - _currentSource = Source; try { diff --git a/Features/Settings/SettingsView.axaml b/Features/Settings/SettingsView.axaml index 19576d5..df3f1f1 100644 --- a/Features/Settings/SettingsView.axaml +++ b/Features/Settings/SettingsView.axaml @@ -62,6 +62,23 @@ + + + + + @@ -414,17 +431,69 @@ + + + + + - + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + @@ -438,8 +507,37 @@ + + + + - + + + + + + + + + + + + + + + + + + + + + + @@ -452,9 +550,64 @@ - + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + @@ -463,12 +616,34 @@ - + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + - + - + + + + + + + @@ -144,7 +186,7 @@ Padding="16,16,16,16"> - + - @@ -254,7 +297,8 @@ - + @@ -270,10 +314,12 @@ - + - + @@ -287,6 +333,10 @@ + + + @@ -295,5 +345,16 @@ + + + + + \ No newline at end of file diff --git a/Features/Shell/MainWindow.axaml.cs b/Features/Shell/MainWindow.axaml.cs index 612b960..7e19b4e 100644 --- a/Features/Shell/MainWindow.axaml.cs +++ b/Features/Shell/MainWindow.axaml.cs @@ -3,6 +3,7 @@ using Avalonia.Markup.Xaml; using LMP.Core.Helpers; using LMP.Core.Services; +using LMP.Core.ViewModels; using Microsoft.Extensions.DependencyInjection; namespace LMP.Features.Shell; @@ -13,145 +14,168 @@ public partial class MainWindow : Window private Button? _maximizeButton; private Button? _closeButton; private Border? _dragArea; - private Border? _maximizeIcon; - private Grid? _restoreIcon; private CancellationTokenSource? _cleanupCts; + // Состояние окна + private volatile bool _isMinimized; + private DateTime _lastCleanupTime = DateTime.MinValue; + private const int MinCleanupIntervalMs = 30_000; // Не чаще раза в 30 секунд + public MainWindow() { InitializeComponent(); - // 1. Отслеживаем состояние окна (Свернуть/Развернуть) - this.PropertyChanged += MainWindow_PropertyChanged; - - // 2. Отслеживаем потерю и получение фокуса (Alt-Tab) - this.Deactivated += OnWindowDeactivated; - this.Activated += OnWindowActivated; + PropertyChanged += MainWindow_PropertyChanged; + Deactivated += OnWindowDeactivated; + Activated += OnWindowActivated; } private void InitializeComponent() { AvaloniaXamlLoader.Load(this); - // Находим элементы управления _minimizeButton = this.FindControl + + + + \ No newline at end of file diff --git a/Features/Shell/SplashWindow.axaml.cs b/Features/Shell/SplashWindow.axaml.cs new file mode 100644 index 0000000..5cf8b19 --- /dev/null +++ b/Features/Shell/SplashWindow.axaml.cs @@ -0,0 +1,77 @@ +using System.Diagnostics; +using Avalonia.Controls; +using Avalonia.Interactivity; +using Avalonia.Threading; +using LMP.Core.Services; + +namespace LMP.Features.Shell; + +public partial class SplashWindow : Window +{ + private readonly double _progressBarMaxWidth; + private readonly Stopwatch _showStopwatch; + + public SplashWindow() + { + InitializeComponent(); + + _showStopwatch = Stopwatch.StartNew(); + _progressBarMaxWidth = Width - 96; + + // Версия + var info = G.Build.Info; + VersionText.Text = info.DisplayVersion; + GitHashText.Text = info.GitHash; + + // Локализованная строка коммитов + var L = LocalizationService.Instance; + BuildInfoText.Text = $"{string.Format(L["Splash_Commits"], info.CommitCount)} • {info.BuildDate:yyyy-MM-dd}"; + + // GitHub URL + GitHubUrlText.Text = G.DisplayGithubUrl; + + GitHubButton.Click += OnGitHubButtonClick; + + Log.Info($"[Splash] Version: {info.FullVersionString}"); + } + + private void OnGitHubButtonClick(object? sender, RoutedEventArgs e) + { + try + { + Process.Start(new ProcessStartInfo + { + FileName = G.GitHubUrl, + UseShellExecute = true + }); + } + catch (Exception ex) + { + Log.Error($"Failed to open GitHub: {ex.Message}"); + } + } + + public void UpdateStatus(string status) + { + Dispatcher.UIThread.Post(() => + { + StatusText.Text = status; + }); + } + + public void SetProgress(double percent) + { + Dispatcher.UIThread.Post(() => + { + var targetWidth = _progressBarMaxWidth * (percent / 100.0); + ProgressFill.Width = Math.Max(0, targetWidth); + }); + } + + public int GetRemainingMinShowTimeMs() + { + var elapsed = (int)_showStopwatch.ElapsedMilliseconds; + var remaining = G.Build.MinSplashTimeMs - elapsed; + return Math.Max(0, remaining); + } +} \ No newline at end of file diff --git a/FodyWeavers.xsd b/FodyWeavers.xsd index f3ac476..938d3c6 100644 --- a/FodyWeavers.xsd +++ b/FodyWeavers.xsd @@ -5,6 +5,7 @@ + diff --git a/GlobalUsings.cs b/GlobalUsings.cs index b6241dd..8e07dd7 100644 --- a/GlobalUsings.cs +++ b/GlobalUsings.cs @@ -1,2 +1 @@ -global using Log = LMP.Logger.Log; -global using G = LMP.Globals; \ No newline at end of file +global using Log = LMP.Core.Logger.Log; \ No newline at end of file diff --git a/Globals.cs b/Globals.cs index df3de9f..b3d8822 100644 --- a/Globals.cs +++ b/Globals.cs @@ -1,39 +1,174 @@ -// Globals.cs +using System.Globalization; +using System.Reflection; using System.Text.Json; +using SystemIO = System.IO; namespace LMP; -public static class Globals +public static class G { public const string AppId = "LMP"; public const string AppName = "Lite Music Player"; + public const string GitHubUrl = "https://github.com/Scream034/LMP"; + + public static string DisplayGithubUrl => GitHubUrl[8..]; + + public static class Build + { + private static readonly Lazy _info = new(LoadBuildInfo); + + public static BuildInfo Info => _info.Value; + public static string Version => Info.Version; + public static string GitHash => Info.GitHash; + public static int CommitCount => Info.CommitCount; + public static DateTime BuildDate => Info.BuildDate; + + public static bool IsDebug => +#if DEBUG + true; +#else + false; +#endif + + public static int MinSplashTimeMs => +#if DEBUG + 1000; +#else + 2000; +#endif + + public static string DisplayVersion => Info.DisplayVersion; + public static string FullVersionString => Info.FullVersionString; + + private static BuildInfo LoadBuildInfo() + { + var assembly = Assembly.GetExecutingAssembly(); + var version = assembly.GetName().Version ?? new Version(1, 0, 0); + + var infoVersion = assembly + .GetCustomAttribute()? + .InformationalVersion ?? version.ToString(); + + // Парсим Git hash из "1.0.172+abc1234" + var gitHash = "local"; + + if (infoVersion.Contains('+')) + { + var hashPart = infoVersion.Split('+')[1].Trim(); + // Берём только первые 7 символов + gitHash = hashPart.Length > 7 ? hashPart[..7] : hashPart; + } + + // CommitCount = version.Build (третий компонент версии) + var commitCount = version.Build; + + var buildDate = DateTime.Now; + try + { + var location = assembly.Location; + if (!string.IsNullOrEmpty(location) && File.Exists(location)) + { + buildDate = File.GetLastWriteTime(location); + } + } + catch { } + + // ═══ УПРОЩЁННАЯ ВЕРСИЯ: только коммиты ═══ + var displayVersion = IsDebug + ? $"#{commitCount}-dev" + : $"#{commitCount}"; + + return new BuildInfo + { + Version = commitCount.ToString(), + GitHash = gitHash, + CommitCount = commitCount, + BuildDate = buildDate, + IsDebug = IsDebug, + DisplayVersion = displayVersion, + FullVersionString = $"{displayVersion} ({gitHash}) • {buildDate:yyyy-MM-dd}" + }; + } + } + + public sealed class BuildInfo + { + public required string Version { get; init; } + public required string GitHash { get; init; } + public required int CommitCount { get; init; } + public required DateTime BuildDate { get; init; } + public required bool IsDebug { get; init; } + public required string DisplayVersion { get; init; } + public required string FullVersionString { get; init; } + } + + public static class SystemInfo + { + public static string DetectSystemLanguage() + { + try + { + var culture = CultureInfo.CurrentUICulture; + var lang = culture.TwoLetterISOLanguageName.ToLowerInvariant(); + + return lang switch + { + "ru" => "ru", + "en" => "en", + _ => "en" + }; + } + catch + { + return "en"; + } + } + } public static class Folder { public static readonly string Data = Path.Combine( Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), AppId); + + public static readonly string Cache = Path.Combine( + Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), + AppId); + + public static readonly string Logs = Path.Combine(Data, "Logs"); public static readonly string Downloads = Path.Combine(Data, "Downloads"); - public static readonly string ImageCache = Path.Combine(Data, "ImageCache"); - public static readonly string StreamCache = Path.Combine(Data, "StreamCache"); - public static readonly string SearchCache = Path.Combine(Data, "SearchCache"); + public static readonly string ImageCache = Path.Combine(Cache, "ImageCache"); + public static readonly string StreamCache = Path.Combine(Cache, "StreamCache"); + public static readonly string SearchCache = Path.Combine(Cache, "SearchCache"); + public static readonly string AudioCache = Path.Combine(Cache, "AudioCache"); + public static readonly string NTokenCache = Path.Combine(Cache, "NToken"); + public static readonly string SigCipherCache = Path.Combine(Cache, "SigCipher"); public static void Create() { Directory.CreateDirectory(Data); + Directory.CreateDirectory(Cache); Directory.CreateDirectory(Downloads); Directory.CreateDirectory(ImageCache); Directory.CreateDirectory(StreamCache); Directory.CreateDirectory(SearchCache); + Directory.CreateDirectory(AudioCache); + Directory.CreateDirectory(NTokenCache); + Directory.CreateDirectory(SigCipherCache); + Directory.CreateDirectory(Logs); } } - public static class File + public static class FilePath { + public static readonly string Bootstrap = Path.Combine(Folder.Data, "bootstrap.json"); public static readonly string Cookie = Path.Combine(Folder.Data, "auth_cookies.txt"); - public static readonly string Library = Path.Combine(Folder.Data, "library.json"); // Legacy - public static readonly string Database = Path.Combine(Folder.Data, "library.db"); // New SQLite + public static readonly string Library = Path.Combine(Folder.Data, "library.json"); + public static readonly string Database = Path.Combine(Folder.Data, "library.db"); public static readonly string Theme = Path.Combine(Folder.Data, "theme.json"); + public static readonly string NTokenCache = Path.Combine(Folder.NTokenCache, "tokens.json"); + public static readonly string NTokenScript = Path.Combine(Folder.NTokenCache, "ntoken_override.js"); + public static readonly string SigCipherCache = Path.Combine(Folder.SigCipherCache, "sigcache.json"); } public static class Json diff --git a/LMP.csproj b/LMP.csproj index cb953d6..110feaa 100644 --- a/LMP.csproj +++ b/LMP.csproj @@ -1,23 +1,89 @@  + + - WinExe + + 11.3.12 + + 3.1.0 + 10.0.2 + 19.5.41 + 8.2.1 + + + + + WinExe Exe net10.0 enable enable + latest + + LMP + LMP + app.manifest + Assets/app.ico + true - true - true - true true - $(NoWarn);CS0436 + + + 1.0 + + + true + + + + + + false + + + true + + + false + + + CompactOnce + + + true + true + true + + + embedded + true + false + + + true + true + + + true + Balanced + + + + + none + true + false + + + @@ -25,32 +91,47 @@ + + - - + + + + + + + + + + + + + + - - - - - - None - All - - - - - + + + + + runtime; build; native; contentfiles; analyzers; buildtransitive all - - - + + + - - + + + + + + + + \ No newline at end of file diff --git a/Program.cs b/Program.cs index 282c586..5acff62 100644 --- a/Program.cs +++ b/Program.cs @@ -14,6 +14,13 @@ using Avalonia; using AsyncImageLoader; using LMP.UI.Dialogs; +using LMP.Core.Audio.Cache; +using LMP.Core.Youtube.Bridge.NToken; +using LMP.Core.Audio.Http; +using LMP.Core.Youtube.Bridge.SigCipher; +using LMP.Core.Youtube.Bridge.Common; +using LMP.Features.Notifications; +using LMP.Core.Models; namespace LMP; @@ -29,17 +36,25 @@ public static void Main(string[] args) try { - Console.WriteLine("Logger initializing..."); + // ═══ ЭТАП 1: Логгер (мгновенно) ═══ Log.Initialize(); + Log.Info($"{G.AppId} starting..."); - Log.Info($"{G.AppId} starting...!"); - + // ═══ ЭТАП 2: Создать папки ═══ G.Folder.Create(); + // ═══ ЭТАП 3: Bootstrap настройки (быстро, без БД) ═══ + BootstrapSettings.Initialize(); + + // ═══ ЭТАП 4: DI контейнер ═══ var services = new ServiceCollection(); ConfigureServices(services); Services = services.BuildServiceProvider(); + // ═══ ЭТАП 5: Eager services ═══ + InitializeEagerServices(); + + // ═══ ЭТАП 6: Avalonia ═══ BuildAvaloniaApp().StartWithClassicDesktopLifetime(args); } catch (Exception ex) @@ -52,17 +67,47 @@ public static AppBuilder BuildAvaloniaApp() => AppBuilder.Configure() .UsePlatformDetect() .WithInterFont() +#if DEBUG .LogToTrace() +#endif .UseReactiveUI(); + private static void InitializeEagerServices() + { + try + { + var orchestrator = Services.GetRequiredService(); + Log.Info("[Startup] PlaybackErrorOrchestrator ready"); + + var notifications = Services.GetRequiredService(); + _ = Task.Run(async () => + { + try + { + await notifications.InitializeAsync(); + Log.Info("[Startup] NotificationService history loaded"); + } + catch (Exception ex) + { + Log.Error($"[Startup] NotificationService.InitializeAsync failed: {ex.Message}"); + } + }); + } + catch (Exception ex) + { + Log.Error($"[Startup] Eager service initialization failed: {ex.Message}"); + } + } + private static void ConfigureServices(IServiceCollection services) { Log.Info("Configuring services..."); - // === Database === - // Configure DbContext with connection string here, not in DbContext - var dbPath = G.File.Database; + // === Bootstrap Settings (уже загружены) === + services.AddSingleton(_ => BootstrapSettings.Current); + // === Database === + var dbPath = G.FilePath.Database; services.AddDbContextFactory(options => { options.UseSqlite($"Data Source={dbPath};Cache=Shared"); @@ -77,6 +122,7 @@ private static void ConfigureServices(IServiceCollection services) services.AddSingleton(); services.AddSingleton(); services.AddSingleton(); + services.AddSingleton(); // === Core Services === services.AddSingleton(sp => @@ -86,7 +132,6 @@ private static void ConfigureServices(IServiceCollection services) return new TrackRegistry(trackRepo, playlistRepo); }); - // Для обложек треков (маленькие) services.AddSingleton(sp => new CachedImageLoader(sp.GetRequiredService(), ImageQuality.Low)); @@ -99,15 +144,28 @@ private static void ConfigureServices(IServiceCollection services) services.AddSingleton(); services.AddSingleton(); + services.AddSingleton(_ => new PlayerContextManager(SharedHttpClient.Instance)); + services.AddSingleton(); + services.AddSingleton(); + // === Caching === - services.AddSingleton(); services.AddSingleton(); services.AddSingleton(); - // === Audio & Downloads === + // === Audio & Downloads ==== + services.AddSingleton(); services.AddSingleton(); services.AddSingleton(); + // === NOTIFICATION SYSTEM === + services.AddSingleton(); + services.AddTransient(); + services.AddTransient(); + services.AddTransient(); + + // === ERROR ORCHESTRATOR === + services.AddSingleton(); + // === ViewModels === services.AddTransient(); services.AddTransient(); @@ -122,6 +180,6 @@ private static void ConfigureServices(IServiceCollection services) services.AddSingleton(); services.AddSingleton(); - Log.Info("Services registered successfully."); + Log.Info("Services registered."); } } \ No newline at end of file diff --git a/README.md b/README.md index 6d6c101..8bee50b 100644 --- a/README.md +++ b/README.md @@ -158,6 +158,22 @@ build-debug.bat --- +### Сборка проекта (рекомендуется) + +Используй центральный скрипт: + +```bat +build.bat debug # Обычная Debug сборка +build.bat optimized # Debug + максимальная оптимизация (для теста производительности) +build.bat release # Полная Release сборка +build.bat publish # Полная публикация + 7z архив +build.bat clean # Полная очистка проекта +``` + +**VS Code:** +- `Ctrl+Shift+P` → `Tasks: Run Task` → выбирай нужную задачу +- Рекомендую конфигурацию **"🎵 Watch + Hot Reload"** для повседневной разработки + ## 📜 Лицензия Проект для личного использования и обучения. diff --git a/SharpJaad.AAC/AACException.cs b/SharpJaad.AAC/AACException.cs new file mode 100644 index 0000000..708d0ec --- /dev/null +++ b/SharpJaad.AAC/AACException.cs @@ -0,0 +1,24 @@ +using System.IO; + +namespace SharpJaad.AAC +{ + /// + /// Standard exception, thrown when decoding of an AAC frame fails. + /// The message gives more detailed information about the error. + /// @author in-somnia + /// + public class AACException : IOException + { + private readonly bool _eos; + + public bool IsEndOfStream { get { return _eos; } } + + public AACException(string message) : this(message, false) + { } + + public AACException(string message, bool eos) : base(message) + { + _eos = eos; + } + } +} diff --git a/SharpJaad.AAC/ChannelConfiguration.cs b/SharpJaad.AAC/ChannelConfiguration.cs new file mode 100644 index 0000000..67486b6 --- /dev/null +++ b/SharpJaad.AAC/ChannelConfiguration.cs @@ -0,0 +1,15 @@ +namespace SharpJaad.AAC +{ + public enum ChannelConfiguration : int + { + CHANNEL_CONFIG_UNSUPPORTED = -1, + CHANNEL_CONFIG_NONE = 0, + CHANNEL_CONFIG_MONO = 1, + CHANNEL_CONFIG_STEREO = 2, + CHANNEL_CONFIG_STEREO_PLUS_CENTER = 3, + CHANNEL_CONFIG_STEREO_PLUS_CENTER_PLUS_REAR_MONO = 4, + CHANNEL_CONFIG_FIVE = 5, + CHANNEL_CONFIG_FIVE_PLUS_ONE = 6, + CHANNEL_CONFIG_SEVEN_PLUS_ONE = 7 + } +} diff --git a/SharpJaad.AAC/Decoder.cs b/SharpJaad.AAC/Decoder.cs new file mode 100644 index 0000000..3472ef8 --- /dev/null +++ b/SharpJaad.AAC/Decoder.cs @@ -0,0 +1,146 @@ +using SharpJaad.AAC.Filterbank; +using SharpJaad.AAC.Syntax; +using SharpJaad.AAC.Transport; +using System; +using System.ComponentModel; + +namespace SharpJaad.AAC +{ + /// + /// AAC Decoder ported from JAAD: https://sourceforge.net/projects/jaadec/ + /// + public class Decoder + { + /* + static Decoder() + { + foreach (Handler h in LOGGER.getHandlers()) + { + LOGGER.removeHandler(h); + } + LOGGER.setLevel(Level.WARNING); + + ConsoleHandler h = new ConsoleHandler(); + h.setLevel(Level.ALL); + LOGGER.addHandler(h); + } + */ + + private DecoderConfig _config; + private SyntacticElements _syntacticElements; + private FilterBank _filterBank; + private BitStream _input; + private ADIFHeader _adifHeader; + + /// + /// The methods returns true, if a profile is supported by the decoder. + /// + /// An AAC profile. + /// true if the specified profile can be decoded + public static bool CanDecode(Profile profile) + { + return profile.IsDecodingSupported(); + } + + /// + /// Initializes the decoder with a MP4 decoder specific info. After this the MP4 frames can be passed to the decodeFrame(byte[], SampleBuffer) method to decode them. + /// + /// A byte array containing the decoder specific info from an MP4 container. + /// + /// If the specified profile is not supported. + public Decoder(byte[] decoderSpecificInfo) + { + _config = DecoderConfig.ParseMP4DecoderSpecificInfo(decoderSpecificInfo); + if (_config == null) throw new InvalidEnumArgumentException("illegal MP4 decoder specific info"); + + if (!CanDecode(_config.GetProfile())) throw new AACException("unsupported profile: " + _config.GetProfile()); + + _syntacticElements = new SyntacticElements(_config); + _filterBank = new FilterBank(_config.IsSmallFrameUsed(), (int)_config.GetChannelConfiguration()); + + _input = new BitStream(); + + //LOGGER.log(Level.FINE, "profile: {0}", config.getProfile()); + //LOGGER.log(Level.FINE, "sf: {0}", config.getSampleFrequency().getFrequency()); + //LOGGER.log(Level.FINE, "channels: {0}", config.getChannelConfiguration().getDescription()); + } + + public Decoder(DecoderConfig cfg) + { + _config = cfg ?? throw new InvalidEnumArgumentException("illegal MP4 decoder specific info"); + + if (!CanDecode(_config.GetProfile())) throw new AACException("unsupported profile: " + _config.GetProfile()); + + _syntacticElements = new SyntacticElements(_config); + _filterBank = new FilterBank(_config.IsSmallFrameUsed(), (int)_config.GetChannelConfiguration()); + + _input = new BitStream(); + + //LOGGER.log(Level.FINE, "profile: {0}", config.getProfile()); + //LOGGER.log(Level.FINE, "sf: {0}", config.getSampleFrequency().getFrequency()); + //LOGGER.log(Level.FINE, "channels: {0}", config.getChannelConfiguration().getDescription()); + } + + public DecoderConfig GetConfig() + { + return _config; + } + + /// + /// Decodes one frame of AAC data in frame mode and returns the raw PCM. + /// + /// The AAC frame. + /// A buffer to hold the decoded PCM data. + /// if decoding fails + public void DecodeFrame(byte[] frame, SampleBuffer buffer) + { + if (frame != null) _input.SetData(frame); + try + { + Decode(buffer); + } + catch (AACException e) + { + if (!e.IsEndOfStream) + throw; + //else LOGGER.warning("unexpected end of frame"); + } + } + + private void Decode(SampleBuffer buffer) + { + if (ADIFHeader.IsPresent(_input)) + { + _adifHeader = ADIFHeader.ReadHeader(_input); + PCE pce = _adifHeader.GetFirstPCE(); + _config.SetProfile(pce.GetProfile()); + _config.SetSampleFrequency(pce.GetSampleFrequency()); + _config.SetChannelConfiguration((ChannelConfiguration)pce.GetChannelCount()); + } + + if (!CanDecode(_config.GetProfile())) throw new AACException("unsupported profile: " + _config.GetProfile()); + + _syntacticElements.StartNewFrame(); + + try + { + //1: bitstream parsing and noiseless coding + _syntacticElements.Decode(_input); + //2: spectral processing + _syntacticElements.Process(_filterBank); + //3: send to output buffer + _syntacticElements.SendToOutput(buffer); + } + catch (AACException) + { + buffer.SetData(new byte[0], 0, 0, 0, 0); + throw; + } + catch (Exception e) + { + buffer.SetData(new byte[0], 0, 0, 0, 0); + throw new AACException(e.Message); + } + } + } +} diff --git a/SharpJaad.AAC/DecoderConfig.cs b/SharpJaad.AAC/DecoderConfig.cs new file mode 100644 index 0000000..650a2ff --- /dev/null +++ b/SharpJaad.AAC/DecoderConfig.cs @@ -0,0 +1,279 @@ +using SharpJaad.AAC.Syntax; + +namespace SharpJaad.AAC +{ + public class DecoderConfig + { + private Profile _profile, _extProfile; + private SampleFrequency _sampleFrequency; + private ChannelConfiguration _channelConfiguration; + private bool _frameLengthFlag; + private bool _dependsOnCoreCoder; + private int _coreCoderDelay; + private bool _extensionFlag; + //extension: SBR + private bool _sbrPresent, _downSampledSBR, _sbrEnabled; + //extension: error resilience + private bool _sectionDataResilience, _scalefactorResilience, _spectralDataResilience; + + public DecoderConfig() + { + _profile = Profile.AAC_MAIN; + _extProfile = Profile.UNKNOWN; + _sampleFrequency = SampleFrequency.SAMPLE_FREQUENCY_NONE; + _channelConfiguration = ChannelConfiguration.CHANNEL_CONFIG_UNSUPPORTED; + _frameLengthFlag = false; + _sbrPresent = false; + _downSampledSBR = false; + _sbrEnabled = true; + _sectionDataResilience = false; + _scalefactorResilience = false; + _spectralDataResilience = false; + } + + public void SetSBRPresent(bool sbr) + { + _sbrPresent = sbr; + } + + public void SetSBRDownsampled(bool sbr) + { + _downSampledSBR = sbr; + } + + /* ========== gets/sets ========== */ + public ChannelConfiguration GetChannelConfiguration() + { + return _channelConfiguration; + } + + public void SetChannelConfiguration(ChannelConfiguration channelConfiguration) + { + _channelConfiguration = channelConfiguration; + } + + public int GetCoreCoderDelay() + { + return _coreCoderDelay; + } + + public void SetCoreCoderDelay(int coreCoderDelay) + { + _coreCoderDelay = coreCoderDelay; + } + + public bool IsDependsOnCoreCoder() + { + return _dependsOnCoreCoder; + } + + public void SetDependsOnCoreCoder(bool dependsOnCoreCoder) + { + _dependsOnCoreCoder = dependsOnCoreCoder; + } + + public Profile GetExtObjectType() + { + return _extProfile; + } + + public void SetExtObjectType(Profile extObjectType) + { + _extProfile = extObjectType; + } + + public int GetFrameLength() + { + return _frameLengthFlag ? Constants.WINDOW_SMALL_LEN_LONG : Constants.WINDOW_LEN_LONG; + } + + public bool IsSmallFrameUsed() + { + return _frameLengthFlag; + } + + public void SetSmallFrameUsed(bool shortFrame) + { + _frameLengthFlag = shortFrame; + } + + public Profile GetProfile() + { + return _profile; + } + + public void SetProfile(Profile profile) + { + _profile = profile; + } + + public SampleFrequency GetSampleFrequency() + { + return _sampleFrequency; + } + + public void SetSampleFrequency(SampleFrequency sampleFrequency) + { + _sampleFrequency = sampleFrequency; + } + + //=========== SBR ============= + public bool IsSBRPresent() + { + return _sbrPresent; + } + + public bool IsSBRDownSampled() + { + return _downSampledSBR; + } + + public bool IsSBREnabled() + { + return _sbrEnabled; + } + + public void IetSBREnabled(bool enabled) + { + _sbrEnabled = enabled; + } + + //=========== ER ============= + public bool IsScalefactorResilienceUsed() + { + return _scalefactorResilience; + } + + public bool IsSectionDataResilienceUsed() + { + return _sectionDataResilience; + } + + public bool IsSpectralDataResilienceUsed() + { + return _spectralDataResilience; + } + + /* ======== static builder ========= */ + + /// + /// Parses the input arrays as a DecoderSpecificInfo, as used in MP4 containers. + /// + /// Data. + /// a DecoderConfig + /// + public static DecoderConfig ParseMP4DecoderSpecificInfo(byte[] data) + { + BitStream input = new BitStream(data); + DecoderConfig config = new DecoderConfig(); + + try + { + config._profile = ReadProfile(input); + + int sf = input.ReadBits(4); + if (sf == 0xF) config._sampleFrequency = SampleFrequencyExtensions.FromFrequency(input.ReadBits(24)); + else config._sampleFrequency = (SampleFrequency)sf; + config._channelConfiguration = (ChannelConfiguration)input.ReadBits(4); + + switch (config._profile) + { + case Profile.AAC_SBR: + config._extProfile = config._profile; + config._sbrPresent = true; + sf = input.ReadBits(4); + //TODO: 24 bits already read; read again? + //if(sf==0xF) config.sampleFrequency = SampleFrequency.forFrequency(in.readBits(24)); + //if sample frequencies are the same: downsample SBR + config._downSampledSBR = (int)config._sampleFrequency == sf; + config._sampleFrequency = (SampleFrequency)sf; + config._profile = ReadProfile(input); + break; + case Profile.AAC_MAIN: + case Profile.AAC_LC: + case Profile.AAC_SSR: + case Profile.AAC_LTP: + case Profile.ER_AAC_LC: + case Profile.ER_AAC_LTP: + case Profile.ER_AAC_LD: + //ga-specific info: + config._frameLengthFlag = input.ReadBool(); + if (config._frameLengthFlag) throw new AACException("config uses 960-sample frames, not yet supported"); //TODO: are 960-frames working yet? + config._dependsOnCoreCoder = input.ReadBool(); + if (config._dependsOnCoreCoder) config._coreCoderDelay = input.ReadBits(14); + else config._coreCoderDelay = 0; + config._extensionFlag = input.ReadBool(); + + if (config._extensionFlag) + { + if (config._profile.IsErrorResilientProfile()) + { + config._sectionDataResilience = input.ReadBool(); + config._scalefactorResilience = input.ReadBool(); + config._spectralDataResilience = input.ReadBool(); + } + //extensionFlag3 + input.SkipBit(); + } + + if (config._channelConfiguration == ChannelConfiguration.CHANNEL_CONFIG_NONE) + { + //TODO: is this working correct? -> ISO 14496-3 part 1: 1.A.4.3 + input.SkipBits(3); //PCE + PCE pce = new PCE(); + pce.Decode(input); + config._profile = pce.GetProfile(); + config._sampleFrequency = pce.GetSampleFrequency(); + config._channelConfiguration = (ChannelConfiguration)pce.GetChannelCount(); + } + + if (input.GetBitsLeft() > 10) ReadSyncExtension(input, config); + break; + default: + throw new AACException("profile not supported: " + (int)config._profile); + } + return config; + } + finally + { + input.Destroy(); + } + } + + private static Profile ReadProfile(BitStream input) + { + int i = input.ReadBits(5); + if (i == 31) i = 32 + input.ReadBits(6); + return (Profile)i; + } + + private static void ReadSyncExtension(BitStream input, DecoderConfig config) + { + int type = input.ReadBits(11); + switch (type) + { + case 0x2B7: + Profile profile = (Profile)input.ReadBits(5); + + if (profile.Equals(Profile.AAC_SBR)) + { + config._sbrPresent = input.ReadBool(); + if (config._sbrPresent) + { + config._profile = profile; + + int tmp = input.ReadBits(4); + + if (tmp == (int)config._sampleFrequency) config._downSampledSBR = true; + if (tmp == 15) + { + throw new AACException("sample rate specified explicitly, not supported yet!"); + //tmp = in.readBits(24); + } + } + } + break; + } + } + } +} diff --git a/SharpJaad.AAC/Error/BitsBuffer.cs b/SharpJaad.AAC/Error/BitsBuffer.cs new file mode 100644 index 0000000..3f53550 --- /dev/null +++ b/SharpJaad.AAC/Error/BitsBuffer.cs @@ -0,0 +1,124 @@ +using SharpJaad.AAC.Syntax; + +namespace SharpJaad.AAC.Error +{ + public class BitsBuffer + { + public int _bufa; + + public int _bufb; + + public int _len; + + public BitsBuffer() + { + _len = 0; + } + + public int GetLength() + { + return _len; + } + + public int ShowBits(int bits) + { + if (bits == 0) return 0; + if (_len <= 32) + { + //huffman_spectral_data_2 needs to read more than may be available, + //bits maybe > len, deliver 0 than + if (_len >= bits) return (int)(_bufa >> _len - bits & 0xFFFFFFFF >> 32 - bits); + else return (int)(_bufa << bits - _len & 0xFFFFFFFF >> 32 - bits); + } + else + { + if (_len - bits < 32) return (int)((_bufb & 0xFFFFFFFF >> 64 - _len) << bits - _len + 32) | _bufa >> _len - bits; + else return (int)(_bufb >> _len - bits - 32 & 0xFFFFFFFF >> 32 - bits); + } + } + + public bool FlushBits(int bits) + { + _len -= bits; + + bool b; + if (_len < 0) + { + _len = 0; + b = false; + } + else b = true; + return b; + } + + public int GetBits(int n) + { + int i = ShowBits(n); + if (!FlushBits(n)) i = -1; + return i; + } + + public int GetBit() + { + int i = ShowBits(1); + if (!FlushBits(1)) i = -1; + return i; + } + + public void RewindReverse() + { + if (_len == 0) return; + int[] i = HCR.RewindReverse64(_bufb, _bufa, _len); + _bufb = i[0]; + _bufa = i[1]; + } + + //merge bits of a to b + public void ConcatBits(BitsBuffer a) + { + if (a._len == 0) return; + int al = a._bufa; + int ah = a._bufb; + + int bl, bh; + if (_len > 32) + { + //mask off superfluous high b bits + bl = _bufa; + bh = _bufb & (1 << _len - 32) - 1; + //left shift a len bits + ah = al << _len - 32; + al = 0; + } + else + { + bl = _bufa & (1 << _len) - 1; + bh = 0; + ah = ah << _len | al >> 32 - _len; + al = al << _len; + } + + //merge + _bufa = bl | al; + _bufb = bh | ah; + + _len += a._len; + } + + public void ReadSegment(int segwidth, BitStream input) + { + _len = segwidth; + + if (segwidth > 32) + { + _bufb = input.ReadBits(segwidth - 32); + _bufa = input.ReadBits(32); + } + else + { + _bufa = input.ReadBits(segwidth); + _bufb = 0; + } + } + } +} diff --git a/SharpJaad.AAC/Error/HCR.cs b/SharpJaad.AAC/Error/HCR.cs new file mode 100644 index 0000000..2f87d97 --- /dev/null +++ b/SharpJaad.AAC/Error/HCR.cs @@ -0,0 +1,285 @@ +using SharpJaad.AAC; +using SharpJaad.AAC.Huffman; +using SharpJaad.AAC.Syntax; +using System; + +namespace SharpJaad.AAC.Error +{ + public class HCR + { + private class Codeword + { + public int _cb; + public int _decoded; + public int _sp_offset; + public BitsBuffer _bits; + + public void Fill(int sp, int cb) + { + _sp_offset = sp; + _cb = cb; + _decoded = 0; + _bits = new BitsBuffer(); + } + } + + private static readonly int NUM_CB = 6; + private static readonly int NUM_CB_ER = 22; + //private static readonly int MAX_CB = 32; + private static readonly int VCB11_FIRST = 16; + private static readonly int VCB11_LAST = 31; + private static readonly int[] PRE_SORT_CB_STD = { 11, 9, 7, 5, 3, 1 }; + private static readonly int[] PRE_SORT_CB_ER = { 11, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 9, 7, 5, 3, 1 }; + private static readonly int[] MAX_CW_LEN = {0, 11, 9, 20, 16, 13, 11, 14, 12, 17, 14, 49, + 0, 0, 0, 0, 14, 17, 21, 21, 25, 25, 29, 29, 29, 29, 33, 33, 33, 37, 37, 41}; + //bit-twiddling helpers + private static readonly int[] S = { 1, 2, 4, 8, 16 }; + private static readonly int[] B = { 0x55555555, 0x33333333, 0x0F0F0F0F, 0x00FF00FF, 0x0000FFFF }; + + //32 bit rewind and reverse + private static int RewindReverse(int v, int len) + { + v = v >> S[0] & B[0] | v << S[0] & ~B[0]; + v = v >> S[1] & B[1] | v << S[1] & ~B[1]; + v = v >> S[2] & B[2] | v << S[2] & ~B[2]; + v = v >> S[3] & B[3] | v << S[3] & ~B[3]; + v = v >> S[4] & B[4] | v << S[4] & ~B[4]; + + //shift off low bits + v >>= 32 - len; + + return v; + } + + //64 bit rewind and reverse + public static int[] RewindReverse64(int hi, int lo, int len) + { + int[] i = new int[2]; + if (len <= 32) + { + i[0] = 0; + i[1] = RewindReverse(lo, len); + } + else + { + lo = lo >> S[0] & B[0] | lo << S[0] & ~B[0]; + hi = hi >> S[0] & B[0] | hi << S[0] & ~B[0]; + lo = lo >> S[1] & B[1] | lo << S[1] & ~B[1]; + hi = hi >> S[1] & B[1] | hi << S[1] & ~B[1]; + lo = lo >> S[2] & B[2] | lo << S[2] & ~B[2]; + hi = hi >> S[2] & B[2] | hi << S[2] & ~B[2]; + lo = lo >> S[3] & B[3] | lo << S[3] & ~B[3]; + hi = hi >> S[3] & B[3] | hi << S[3] & ~B[3]; + lo = lo >> S[4] & B[4] | lo << S[4] & ~B[4]; + hi = hi >> S[4] & B[4] | hi << S[4] & ~B[4]; + + //shift off low bits + i[1] = hi >> 64 - len | lo << len - 32; + i[1] = lo >> 64 - len; + } + return i; + } + + private static bool IsGoodCB(int cb, int sectCB) + { + bool b = false; + if (sectCB > HCB.ZERO_HCB && sectCB <= HCB.ESCAPE_HCB || sectCB >= VCB11_FIRST && sectCB <= VCB11_LAST) + { + if (cb < HCB.ESCAPE_HCB) b = sectCB == cb || sectCB == cb + 1; + else b = sectCB == cb; + } + return b; + } + + //sectionDataResilience = hDecoder->aacSectionDataResilienceFlag + public static void DecodeReorderedSpectralData(ICStream ics, BitStream input, short[] spectralData, bool sectionDataResilience) + { + ICSInfo info = ics.GetInfo(); + int windowGroupCount = info.GetWindowGroupCount(); + int maxSFB = info.GetMaxSFB(); + int[] swbOffsets = info.GetSWBOffsets(); + int swbOffsetMax = info.GetSWBOffsetMax(); + //TODO: + //final SectionData sectData = ics.getSectionData(); + int[][] sectStart = null; //sectData.getSectStart(); + int[][] sectEnd = null; //sectData.getSectEnd(); + int[] numSec = null; //sectData.getNumSec(); + int[][] sectCB = null; //sectData.getSectCB(); + int[][] sectSFBOffsets = null; //info.getSectSFBOffsets(); + + //check parameter + int spDataLen = ics.GetReorderedSpectralDataLength(); + if (spDataLen == 0) return; + + int longestLen = ics.GetLongestCodewordLength(); + if (longestLen == 0 || longestLen >= spDataLen) throw new AACException("length of longest HCR codeword out of range"); + + //create spOffsets + int[] spOffsets = new int[8]; + int shortFrameLen = spectralData.Length / 8; + spOffsets[0] = 0; + int g; + for (g = 1; g < windowGroupCount; g++) + { + spOffsets[g] = spOffsets[g - 1] + shortFrameLen * info.GetWindowGroupLength(g - 1); + } + + Codeword[] codeword = new Codeword[512]; + BitsBuffer[] segment = new BitsBuffer[512]; + + int lastCB; + int[] preSortCB; + if (sectionDataResilience) + { + preSortCB = PRE_SORT_CB_ER; + lastCB = NUM_CB_ER; + } + else + { + preSortCB = PRE_SORT_CB_STD; + lastCB = NUM_CB; + } + + int PCWs_done = 0; + int segmentsCount = 0; + int numberOfCodewords = 0; + int bitsread = 0; + + int sfb, w_idx, i, thisCB, thisSectCB, cws; + //step 1: decode PCW's (set 0), and stuff data in easier-to-use format + for (int sortloop = 0; sortloop < lastCB; sortloop++) + { + //select codebook to process this pass + thisCB = preSortCB[sortloop]; + + for (sfb = 0; sfb < maxSFB; sfb++) + { + for (w_idx = 0; 4 * w_idx < Math.Min(swbOffsets[sfb + 1], swbOffsetMax) - swbOffsets[sfb]; w_idx++) + { + for (g = 0; g < windowGroupCount; g++) + { + for (i = 0; i < numSec[g]; i++) + { + if (sectStart[g][i] <= sfb && sectEnd[g][i] > sfb) + { + /* check whether codebook used here is the one we want to process */ + thisSectCB = sectCB[g][i]; + + if (IsGoodCB(thisCB, thisSectCB)) + { + //precalculation + int sect_sfb_size = sectSFBOffsets[g][sfb + 1] - sectSFBOffsets[g][sfb]; + int inc = thisSectCB < HCB.FIRST_PAIR_HCB ? 4 : 2; + int group_cws_count = 4 * info.GetWindowGroupLength(g) / inc; + int segwidth = Math.Min(MAX_CW_LEN[thisSectCB], longestLen); + + //read codewords until end of sfb or end of window group + for (cws = 0; cws < group_cws_count && cws + w_idx * group_cws_count < sect_sfb_size; cws++) + { + int sp = spOffsets[g] + sectSFBOffsets[g][sfb] + inc * (cws + w_idx * group_cws_count); + + //read and decode PCW + if (PCWs_done == 0) + { + //read in normal segments + if (bitsread + segwidth <= spDataLen) + { + segment[segmentsCount].ReadSegment(segwidth, input); + bitsread += segwidth; + + //Huffman.decodeSpectralDataER(segment[segmentsCount], thisSectCB, spectralData, sp); + + //keep leftover bits + segment[segmentsCount].RewindReverse(); + + segmentsCount++; + } + else + { + //remaining after last segment + if (bitsread < spDataLen) + { + int additional_bits = spDataLen - bitsread; + + segment[segmentsCount].ReadSegment(additional_bits, input); + segment[segmentsCount]._len += segment[segmentsCount - 1]._len; + segment[segmentsCount].RewindReverse(); + + if (segment[segmentsCount - 1]._len > 32) + { + segment[segmentsCount - 1]._bufb = segment[segmentsCount]._bufb + + segment[segmentsCount - 1].ShowBits(segment[segmentsCount - 1]._len - 32); + segment[segmentsCount - 1]._bufa = segment[segmentsCount]._bufa + + segment[segmentsCount - 1].ShowBits(32); + } + else + { + segment[segmentsCount - 1]._bufa = segment[segmentsCount]._bufa + + segment[segmentsCount - 1].ShowBits(segment[segmentsCount - 1]._len); + segment[segmentsCount - 1]._bufb = segment[segmentsCount]._bufb; + } + segment[segmentsCount - 1]._len += additional_bits; + } + bitsread = spDataLen; + PCWs_done = 1; + + codeword[0].Fill(sp, thisSectCB); + } + } + else + { + codeword[numberOfCodewords - segmentsCount].Fill(sp, thisSectCB); + } + numberOfCodewords++; + } + } + } + } + } + } + } + } + + if (segmentsCount == 0) throw new AACException("no segments in HCR"); + + int numberOfSets = numberOfCodewords / segmentsCount; + + //step 2: decode nonPCWs + int trial, codewordBase, segmentID, codewordID; + for (int set = 1; set <= numberOfSets; set++) + { + for (trial = 0; trial < segmentsCount; trial++) + { + for (codewordBase = 0; codewordBase < segmentsCount; codewordBase++) + { + segmentID = (trial + codewordBase) % segmentsCount; + codewordID = codewordBase + set * segmentsCount - segmentsCount; + + //data up + if (codewordID >= numberOfCodewords - segmentsCount) break; + + if (codeword[codewordID]._decoded == 0 && segment[segmentID]._len > 0) + { + if (codeword[codewordID]._bits._len != 0) segment[segmentID].ConcatBits(codeword[codewordID]._bits); + + int tmplen = segment[segmentID]._len; + /*int ret = Huffman.decodeSpectralDataER(segment[segmentID], codeword[codewordID].cb, + spectralData, codeword[codewordID].sp_offset); + + if(ret>=0) codeword[codewordID].decoded = 1; + else { + codeword[codewordID].bits = segment[segmentID]; + codeword[codewordID].bits.len = tmplen; + }*/ + + } + } + } + for (i = 0; i < segmentsCount; i++) + { + segment[i].RewindReverse(); + } + } + } + } +} diff --git a/SharpJaad.AAC/Error/RVLC.cs b/SharpJaad.AAC/Error/RVLC.cs new file mode 100644 index 0000000..4340717 --- /dev/null +++ b/SharpJaad.AAC/Error/RVLC.cs @@ -0,0 +1,135 @@ +using SharpJaad.AAC.Huffman; +using SharpJaad.AAC.Syntax; +using System; + +namespace SharpJaad.AAC.Error +{ + public class RVLC + { + private const int ESCAPE_FLAG = 7; + + public void Decode(BitStream input, ICStream ics, int[][] scaleFactors) + { + int bits = ics.GetInfo().IsEightShortFrame() ? 11 : 9; + bool sfConcealment = input.ReadBool(); + int revGlobalGain = input.ReadBits(8); + int rvlcSFLen = input.ReadBits(bits); + + ICSInfo info = ics.GetInfo(); + int windowGroupCount = info.GetWindowGroupCount(); + int maxSFB = info.GetMaxSFB(); + int[][] sfbCB = null; //ics.getSectionData().getSfbCB(); + + int sf = ics.GetGlobalGain(); + int intensityPosition = 0; + int noiseEnergy = sf - 90 - 256; + bool intensityUsed = false, noiseUsed = false; + + int sfb; + for (int g = 0; g < windowGroupCount; g++) + { + for (sfb = 0; sfb < maxSFB; sfb++) + { + switch (sfbCB[g][sfb]) + { + case HCB.ZERO_HCB: + scaleFactors[g][sfb] = 0; + break; + case HCB.INTENSITY_HCB: + case HCB.INTENSITY_HCB2: + if (!intensityUsed) intensityUsed = true; + intensityPosition += DecodeHuffman(input); + scaleFactors[g][sfb] = intensityPosition; + break; + case HCB.NOISE_HCB: + if (noiseUsed) + { + noiseEnergy += DecodeHuffman(input); + scaleFactors[g][sfb] = noiseEnergy; + } + else + { + noiseUsed = true; + noiseEnergy = DecodeHuffman(input); + } + break; + default: + sf += DecodeHuffman(input); + scaleFactors[g][sfb] = sf; + break; + } + } + } + + int lastIntensityPosition = 0; + if (intensityUsed) lastIntensityPosition = DecodeHuffman(input); + noiseUsed = false; + if (input.ReadBool()) DecodeEscapes(input, ics, scaleFactors); + } + + private void DecodeEscapes(BitStream input, ICStream ics, int[][] scaleFactors) + { + ICSInfo info = ics.GetInfo(); + int windowGroupCount = info.GetWindowGroupCount(); + int maxSFB = info.GetMaxSFB(); + int[][] sfbCB = null; //ics.getSectionData().getSfbCB(); + + int escapesLen = input.ReadBits(8); + + bool noiseUsed = false; + + int sfb, val; + for (int g = 0; g < windowGroupCount; g++) + { + for (sfb = 0; sfb < maxSFB; sfb++) + { + if (sfbCB[g][sfb] == HCB.NOISE_HCB && !noiseUsed) noiseUsed = true; + else if (Math.Abs(sfbCB[g][sfb]) == ESCAPE_FLAG) + { + val = DecodeHuffmanEscape(input); + if (sfbCB[g][sfb] == -ESCAPE_FLAG) scaleFactors[g][sfb] -= val; + else scaleFactors[g][sfb] += val; + } + } + } + } + + private int DecodeHuffman(BitStream input) + { + int off = 0; + int i = RVLCTables.RVLC_BOOK[off][1]; + int cw = input.ReadBits(i); + + int j; + while (cw != RVLCTables.RVLC_BOOK[off][2] && i < 10) + { + off++; + j = RVLCTables.RVLC_BOOK[off][1] - i; + i += j; + cw <<= j; + cw |= input.ReadBits(j); + } + + return RVLCTables.RVLC_BOOK[off][0]; + } + + private int DecodeHuffmanEscape(BitStream input) + { + int off = 0; + int i = RVLCTables.ESCAPE_BOOK[off][1]; + int cw = input.ReadBits(i); + + int j; + while (cw != RVLCTables.ESCAPE_BOOK[off][2] && i < 21) + { + off++; + j = RVLCTables.ESCAPE_BOOK[off][1] - i; + i += j; + cw <<= j; + cw |= input.ReadBits(j); + } + + return RVLCTables.ESCAPE_BOOK[off][0]; + } + } +} diff --git a/SharpJaad.AAC/Error/RVLCTables.cs b/SharpJaad.AAC/Error/RVLCTables.cs new file mode 100644 index 0000000..78ea246 --- /dev/null +++ b/SharpJaad.AAC/Error/RVLCTables.cs @@ -0,0 +1,90 @@ +namespace SharpJaad.AAC.Error +{ + public static class RVLCTables + { + //index,length,codeword + public static int[][] RVLC_BOOK = new int[][] { + new int[] {0, 1, 0}, /* 0 */ + new int[] { -1, 3, 5 }, /* 101 */ + new int[] { 1, 3, 7 }, /* 111 */ + new int[] { -2, 4, 9 }, /* 1001 */ + new int[] { -3, 5, 17 }, /* 10001 */ + new int[] { 2, 5, 27 }, /* 11011 */ + new int[] { -4, 6, 33 }, /* 100001 */ + new int[] { 99, 6, 50 }, /* 110010 */ + new int[] { 3, 6, 51 }, /* 110011 */ + new int[] { 99, 6, 52 }, /* 110100 */ + new int[] { -7, 7, 65 }, /* 1000001 */ + new int[] { 99, 7, 96 }, /* 1100000 */ + new int[] { 99, 7, 98 }, /* 1100010 */ + new int[] { 7, 7, 99 }, /* 1100011 */ + new int[] { 4, 7, 107 }, /* 1101011 */ + new int[] { -5, 8, 129 }, /* 10000001 */ + new int[] { 99, 8, 194 }, /* 11000010 */ + new int[] { 5, 8, 195 }, /* 11000011 */ + new int[] { 99, 8, 212 }, /* 11010100 */ + new int[] { 99, 9, 256 }, /* 100000000 */ + new int[] { -6, 9, 257 }, /* 100000001 */ + new int[] { 99, 9, 426 }, /* 110101010 */ + new int[] { 6, 9, 427 }, /* 110101011 */ + new int[] { 99, 10, 0 } + }; + public static int[][] ESCAPE_BOOK = { + new int[] { 1, 2, 0 }, + new int[] { 0, 2, 2 }, + new int[] { 3, 3, 2 }, + new int[] { 2, 3, 6 }, + new int[] { 4, 4, 14 }, + new int[] { 7, 5, 13 }, + new int[] { 6, 5, 15 }, + new int[] { 5, 5, 31 }, + new int[] { 11, 6, 24 }, + new int[] { 10, 6, 25 }, + new int[] { 9, 6, 29 }, + new int[] { 8, 6, 61 }, + new int[] { 13, 7, 56 }, + new int[] { 12, 7, 120 }, + new int[] { 15, 8, 114 }, + new int[] { 14, 8, 242 }, + new int[] { 17, 9, 230 }, + new int[] { 16, 9, 486 }, + new int[] { 19, 10, 463 }, + new int[] { 18, 10, 974 }, + new int[] { 22, 11, 925 }, + new int[] { 20, 11, 1950 }, + new int[] { 21, 11, 1951 }, + new int[] { 23, 12, 1848 }, + new int[] { 25, 13, 3698 }, + new int[] { 24, 14, 7399 }, + new int[] { 26, 15, 14797 }, + new int[] { 49, 19, 236736 }, + new int[] { 50, 19, 236737 }, + new int[] { 51, 19, 236738 }, + new int[] { 52, 19, 236739 }, + new int[] { 53, 19, 236740 }, + new int[] { 27, 20, 473482 }, + new int[] { 28, 20, 473483 }, + new int[] { 29, 20, 473484 }, + new int[] { 30, 20, 473485 }, + new int[] { 31, 20, 473486 }, + new int[] { 32, 20, 473487 }, + new int[] { 33, 20, 473488 }, + new int[] { 34, 20, 473489 }, + new int[] { 35, 20, 473490 }, + new int[] { 36, 20, 473491 }, + new int[] { 37, 20, 473492 }, + new int[] { 38, 20, 473493 }, + new int[] { 39, 20, 473494 }, + new int[] { 40, 20, 473495 }, + new int[] { 41, 20, 473496 }, + new int[] { 42, 20, 473497 }, + new int[] { 43, 20, 473498 }, + new int[] { 44, 20, 473499 }, + new int[] { 45, 20, 473500 }, + new int[] { 46, 20, 473501 }, + new int[] { 47, 20, 473502 }, + new int[] { 48, 20, 473503 }, + new int[] { 99, 21, 0 } + }; + } +} diff --git a/SharpJaad.AAC/Filterbank/FFT.cs b/SharpJaad.AAC/Filterbank/FFT.cs new file mode 100644 index 0000000..3f39442 --- /dev/null +++ b/SharpJaad.AAC/Filterbank/FFT.cs @@ -0,0 +1,130 @@ +using SharpJaad.AAC; + +namespace SharpJaad.AAC.Filterbank +{ + public class FFT + { + private int _length; + private float[,] _roots; + private float[,] _rev; + private float[] _a, _b, _c, _d, _e1, _e2; + + public FFT(int length) + { + _length = length; + + switch (length) + { + case 64: + _roots = FFTables.FFT_TABLE_64; + break; + case 512: + _roots = FFTables.FFT_TABLE_512; + break; + case 60: + _roots = FFTables.FFT_TABLE_60; + break; + case 480: + _roots = FFTables.FFT_TABLE_480; + break; + default: + throw new AACException("unexpected FFT length: " + length); + } + + //processing buffers + _rev = new float[length, 2]; + _a = new float[2]; + _b = new float[2]; + _c = new float[2]; + _d = new float[2]; + _e1 = new float[2]; + _e2 = new float[2]; + } + + public void Process(float[,] input, bool forward) + { + int imOff = forward ? 2 : 1; + int scale = 1; + //bit-reversal + int ii = 0; + for (int i = 0; i < _length; i++) + { + _rev[i, 0] = input[ii, 0]; + _rev[i, 1] = input[ii, 1]; + int k = _length >> 1; + while (ii >= k && k > 0) + { + ii -= k; + k >>= 1; + } + ii += k; + } + for (int i = 0; i < _length; i++) + { + input[i, 0] = _rev[i, 0]; + input[i, 1] = _rev[i, 1]; + } + + //bottom base-4 round + for (int i = 0; i < _length; i += 4) + { + _a[0] = input[i, 0] + input[i + 1, 0]; + _a[1] = input[i, 1] + input[i + 1, 1]; + _b[0] = input[i + 2, 0] + input[i + 3, 0]; + _b[1] = input[i + 2, 1] + input[i + 3, 1]; + _c[0] = input[i, 0] - input[i + 1, 0]; + _c[1] = input[i, 1] - input[i + 1, 1]; + _d[0] = input[i + 2, 0] - input[i + 3, 0]; + _d[1] = input[i + 2, 1] - input[i + 3, 1]; + input[i, 0] = _a[0] + _b[0]; + input[i, 1] = _a[1] + _b[1]; + input[i + 2, 0] = _a[0] - _b[0]; + input[i + 2, 1] = _a[1] - _b[1]; + + _e1[0] = _c[0] - _d[1]; + _e1[1] = _c[1] + _d[0]; + _e2[0] = _c[0] + _d[1]; + _e2[1] = _c[1] - _d[0]; + if (forward) + { + input[i + 1, 0] = _e2[0]; + input[i + 1, 1] = _e2[1]; + input[i + 3, 0] = _e1[0]; + input[i + 3, 1] = _e1[1]; + } + else + { + input[i + 1, 0] = _e1[0]; + input[i + 1, 1] = _e1[1]; + input[i + 3, 0] = _e2[0]; + input[i + 3, 1] = _e2[1]; + } + } + + //iterations from bottom to top + int shift, m, km; + float rootRe, rootIm, zRe, zIm; + for (int i = 4; i < _length; i <<= 1) + { + shift = i << 1; + m = _length / shift; + for (int j = 0; j < _length; j += shift) + { + for (int k = 0; k < i; k++) + { + km = k * m; + rootRe = _roots[km, 0]; + rootIm = _roots[km, imOff]; + zRe = input[i + j + k, 0] * rootRe - input[i + j + k, 1] * rootIm; + zIm = input[i + j + k, 0] * rootIm + input[i + j + k, 1] * rootRe; + + input[i + j + k, 0] = (input[j + k, 0] - zRe) * scale; + input[i + j + k, 1] = (input[j + k, 1] - zIm) * scale; + input[j + k, 0] = (input[j + k, 0] + zRe) * scale; + input[j + k, 1] = (input[j + k, 1] + zIm) * scale; + } + } + } + } + } +} diff --git a/SharpJaad.AAC/Filterbank/FFTables.cs b/SharpJaad.AAC/Filterbank/FFTables.cs new file mode 100644 index 0000000..4c3afea --- /dev/null +++ b/SharpJaad.AAC/Filterbank/FFTables.cs @@ -0,0 +1,1130 @@ +namespace SharpJaad.AAC.Filterbank +{ + public static class FFTables + { + public static float[,] FFT_TABLE_512 = new float[,] { + {1.0f, 0.0f, 0.0f}, + { 0.9999247f, 0.012271538f, -0.012271538f }, + { 0.9996989f, 0.024541229f, -0.024541229f }, + { 0.9993224f, 0.036807224f, -0.036807224f }, + { 0.9987955f, 0.049067676f, -0.049067676f }, + { 0.9981182f, 0.061320737f, -0.061320737f }, + { 0.99729055f, 0.07356457f, -0.07356457f }, + { 0.9963127f, 0.08579732f, -0.08579732f }, + { 0.99518484f, 0.09801715f, -0.09801715f }, + { 0.9939071f, 0.11022222f, -0.11022222f }, + { 0.9924797f, 0.12241069f, -0.12241069f }, + { 0.9909028f, 0.13458073f, -0.13458073f }, + { 0.98917663f, 0.1467305f, -0.1467305f }, + { 0.9873016f, 0.15885818f, -0.15885818f }, + {0.98527783f, 0.17096192f, -0.17096192f}, + {0.9831057f, 0.18303992f, -0.18303992f}, + {0.9807855f, 0.19509035f, -0.19509035f}, + {0.97831756f, 0.2071114f, -0.2071114f}, + {0.9757023f, 0.21910128f, -0.21910128f}, + {0.97294015f, 0.23105815f, -0.23105815f}, + {0.97003144f, 0.24298023f, -0.24298023f}, + {0.9669767f, 0.2548657f, -0.2548657f}, + {0.96377635f, 0.2667128f, -0.2667128f}, + {0.96043086f, 0.27851975f, -0.27851975f}, + {0.9569407f, 0.29028472f, -0.29028472f}, + {0.95330644f, 0.302006f, -0.302006f}, + {0.9495286f, 0.3136818f, -0.3136818f}, + {0.9456077f, 0.32531038f, -0.32531038f}, + {0.9415445f, 0.33688995f, -0.33688995f}, + {0.9373394f, 0.3484188f, -0.3484188f}, + {0.93299323f, 0.35989517f, -0.35989517f}, + {0.92850655f, 0.37131733f, -0.37131733f}, + {0.92388f, 0.38268358f, -0.38268358f}, + {0.9191143f, 0.3939922f, -0.3939922f}, + {0.9142102f, 0.4052415f, -0.4052415f}, + {0.9091684f, 0.41642973f, -0.41642973f}, + {0.9039898f, 0.42755526f, -0.42755526f}, + {0.89867496f, 0.43861642f, -0.43861642f}, + {0.89322484f, 0.4496115f, -0.4496115f}, + {0.8876402f, 0.4605389f, -0.4605389f}, + {0.8819218f, 0.47139695f, -0.47139695f}, + {0.8760707f, 0.482184f, -0.482184f}, + {0.8700876f, 0.49289843f, -0.49289843f}, + {0.8639735f, 0.50353867f, -0.50353867f}, + {0.85772926f, 0.51410306f, -0.51410306f}, + {0.85135585f, 0.52459f, -0.52459f}, + {0.84485424f, 0.53499794f, -0.53499794f}, + {0.83822536f, 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+ {-0.8819212f, 0.4713965f}, + {-0.9238794f, 0.38268322f}, + {-0.9569402f, 0.29028445f}, + {-0.98078513f, 0.19509012f}, + {-0.99518454f, 0.09801695f}, + {-0.99999976f, -1.7881393E-7f}, + {-0.9951845f, -0.0980173f}, + {-0.980785f, -0.19509046f}, + {-0.95694005f, -0.29028478f}, + {-0.92387927f, -0.38268352f}, + {-0.881921f, -0.47139677f}, + {-0.8314693f, -0.55557024f}, + {-0.77301013f, -0.6343933f}, + {-0.7071065f, -0.7071067f}, + {-0.634393f, -0.7730104f}, + {-0.5555699f, -0.83146954f}, + {-0.4713964f, -0.8819212f}, + {-0.3826831f, -0.9238794f}, + {-0.29028434f, -0.9569402f}, + {-0.19509f, -0.9807851f}, + {-0.098016836f, -0.9951845f}, + {2.8312206E-7f, -0.9999997f}, + {0.098017395f, -0.9951844f}, + {0.19509055f, -0.98078495f}, + {0.29028487f, -0.95693994f}, + {0.3826836f, -0.92387915f}, + {0.47139686f, -0.8819209f}, + {0.55557036f, -0.8314692f}, + {0.63439333f, -0.77301f}, + {0.70710677f, -0.70710635f}, + {0.7730104f, -0.63439286f}, + {0.8314695f, -0.55556977f}, + {0.88192105f, 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-0.9978656f, 0.9978656f}, + {0.078459844f, -0.99692404f, 0.99692404f}, + {0.09150246f, -0.99581164f, 0.99581164f}, + {0.104529396f, -0.9945286f, 0.9945286f}, + {0.117538415f, -0.9930752f, 0.9930752f}, + {0.1305273f, -0.9914516f, 0.9914516f}, + {0.14349383f, -0.9896581f, 0.9896581f}, + {0.15643576f, -0.9876951f, 0.9876951f}, + {0.16935089f, -0.98556286f, 0.98556286f}, + {0.18223701f, -0.9832617f, 0.9832617f}, + {0.19509192f, -0.98079205f, 0.98079205f}, + {0.20791338f, -0.97815436f, 0.97815436f}, + {0.22069922f, -0.97534907f, 0.97534907f}, + {0.23344724f, -0.97237664f, 0.97237664f}, + {0.24615526f, -0.9692376f, 0.9692376f}, + {0.2588211f, -0.96593255f, 0.96593255f}, + {0.2714426f, -0.96246195f, 0.96246195f}, + {0.2840176f, -0.9588264f, 0.9588264f}, + {0.29654393f, -0.9550266f, 0.9550266f}, + {0.30901945f, -0.9510632f, 0.9510632f}, + {0.321442f, -0.9469368f, 0.9469368f}, + {0.3338095f, -0.9426481f, 0.9426481f}, + {0.3461198f, -0.9381979f, 0.9381979f}, + {0.35837078f, -0.933587f, 0.933587f}, + {0.37056035f, -0.9288161f, 0.9288161f}, + {0.38268644f, -0.923886f, 0.923886f}, + {0.39474696f, -0.9187976f, 0.9187976f}, + {0.40673983f, -0.91355187f, 0.91355187f}, + {0.41866302f, -0.90814954f, 0.90814954f}, + {0.43051448f, -0.90259165f, 0.90259165f}, + {0.44229218f, -0.8968791f, 0.8968791f}, + {0.4539941f, -0.89101285f, 0.89101285f}, + {0.4656182f, -0.884994f, 0.884994f}, + {0.47716254f, -0.8788234f, 0.8788234f}, + {0.4886251f, -0.87250227f, 0.87250227f}, + {0.500004f, -0.86603165f, 0.86603165f}, + {0.51129717f, -0.85941267f, 0.85941267f}, + {0.5225027f, -0.8526464f, 0.8526464f}, + {0.53361875f, -0.84573406f, 0.84573406f}, + {0.54464334f, -0.8386768f, 0.8386768f}, + {0.5555746f, -0.83147585f, 0.83147585f}, + {0.5664107f, -0.8241324f, 0.8241324f}, + {0.57714975f, -0.8166477f, 0.8166477f}, + {0.58778995f, -0.8090231f, 0.8090231f}, + {0.59832937f, -0.8012598f, 0.8012598f}, + {0.60876626f, -0.79335934f, 0.79335934f}, + {0.61909884f, -0.7853229f, 0.7853229f}, + {0.62932533f, -0.7771519f, 0.7771519f}, + {0.63944405f, -0.7688477f, 0.7688477f}, + {0.64945316f, -0.7604118f, 0.7604118f}, + {0.65935105f, -0.7518456f, 0.7518456f}, + {0.669136f, -0.7431506f, 0.7431506f}, + {0.6788062f, -0.7343282f, 0.7343282f}, + {0.68836015f, -0.72538f, 0.72538f}, + {0.69779617f, -0.7163075f, 0.7163075f}, + {0.70711255f, -0.7071123f, 0.7071123f}, + {0.7163078f, -0.6977959f, 0.6977959f}, + {0.72538036f, -0.68836f, 0.68836f}, + {0.7343286f, -0.67880607f, 0.67880607f}, + {0.74315107f, -0.66913587f, 0.66913587f}, + {0.75184613f, -0.659351f, 0.659351f}, + {0.7604124f, -0.64945316f, 0.64945316f}, + {0.7688483f, -0.63944405f, 0.63944405f}, + {0.7771525f, -0.6293254f, 0.6293254f}, + {0.7853235f, -0.6190989f, 0.6190989f}, + {0.79335994f, -0.60876626f, 0.60876626f}, + {0.8012605f, -0.59832937f, 0.59832937f}, + {0.80902374f, -0.58778995f, 0.58778995f}, + {0.81664836f, -0.5771498f, 0.5771498f}, + {0.82413304f, -0.5664108f, 0.5664108f}, + {0.83147657f, -0.5555747f, 0.5555747f}, + {0.8386776f, -0.54464346f, 0.54464346f}, + {0.84573495f, -0.53361887f, 0.53361887f}, + {0.85264736f, -0.52250284f, 0.52250284f}, + {0.8594137f, -0.5112973f, 0.5112973f}, + {0.8660327f, -0.5000041f, 0.5000041f}, + {0.8725034f, -0.48862526f, 0.48862526f}, + {0.8788246f, -0.4771627f, 0.4771627f}, + {0.88499516f, -0.46561837f, 0.46561837f}, + {0.8910141f, -0.45399427f, 0.45399427f}, + {0.8968804f, -0.44229236f, 0.44229236f}, + {0.90259296f, -0.4305147f, 0.4305147f}, + {0.9081509f, -0.41866326f, 0.41866326f}, + {0.91355324f, -0.40674007f, 0.40674007f}, + {0.91879904f, -0.3947472f, 0.3947472f}, + {0.92388743f, -0.38268667f, 0.38268667f}, + {0.9288175f, -0.3705606f, 0.3705606f}, + {0.93358845f, -0.358371f, 0.358371f}, + {0.9381994f, -0.34612f, 0.34612f}, + {0.9426496f, -0.3338097f, 0.3338097f}, + {0.9469383f, -0.32144222f, 0.32144222f}, + {0.9510647f, -0.30901963f, 0.30901963f}, + {0.9550282f, -0.2965441f, 0.2965441f}, + {0.95882803f, -0.28401777f, 0.28401777f}, + {0.96246356f, -0.27144277f, 0.27144277f}, + {0.9659342f, -0.25882128f, 0.25882128f}, + {0.96923935f, -0.24615541f, 0.24615541f}, + {0.9723784f, -0.23344737f, 0.23344737f}, + {0.97535086f, -0.22069934f, 0.22069934f}, + {0.97815615f, -0.20791349f, 0.20791349f}, + {0.98079383f, -0.19509201f, 0.19509201f}, + {0.98326355f, -0.1822371f, 0.1822371f}, + {0.98556477f, -0.16935098f, 0.16935098f}, + {0.9876971f, -0.15643583f, 0.15643583f}, + {0.9896602f, -0.14349388f, 0.14349388f}, + {0.9914537f, -0.13052733f, 0.13052733f}, + {0.99307734f, -0.11753843f, 0.11753843f}, + {0.9945308f, -0.10452938f, 0.10452938f}, + {0.99581385f, -0.09150242f, 0.09150242f}, + {0.9969263f, -0.078459784f, 0.078459784f}, + {0.9978679f, -0.0654037f, 0.0654037f}, + {0.9986385f, -0.05233641f, 0.05233641f}, + {0.999238f, -0.039260153f, 0.039260153f}, + {0.99966633f, -0.026177168f, 0.026177168f}, + {0.99992335f, -0.013089697f, 0.013089697f} + }; + public static float[,] FFT_TABLE_60 = { + {1.0f, 0.0f}, + {0.9945219f, 0.104528464f}, + {0.9781476f, 0.2079117f}, + {0.95105654f, 0.309017f}, + {0.9135455f, 0.40673664f}, + {0.86602545f, 0.5f}, + {0.80901706f, 0.58778524f}, + {0.7431449f, 0.66913056f}, + {0.66913074f, 0.7431448f}, + {0.58778536f, 0.809017f}, + {0.5000001f, 0.86602545f}, + {0.40673676f, 0.9135455f}, + {0.30901712f, 0.9510566f}, + {0.2079118f, 0.9781477f}, + {0.104528576f, 0.994522f}, + {1.0430813E-7f, 1.0000001f}, + {-0.104528375f, 0.99452204f}, + {-0.20791161f, 0.97814775f}, + {-0.30901694f, 0.95105666f}, + {-0.4067366f, 0.9135456f}, + {-0.5f, 0.86602557f}, + {-0.5877853f, 0.8090172f}, + {-0.6691307f, 0.74314505f}, + {-0.7431449f, 0.66913086f}, + {-0.8090172f, 0.5877855f}, + {-0.8660256f, 0.5000002f}, + {-0.9135457f, 0.4067368f}, + {-0.95105684f, 0.30901712f}, + {-0.9781479f, 0.20791179f}, + {-0.9945222f, 0.10452853f}, + {-1.0000004f, 3.7252903E-8f}, + {-0.9945223f, -0.104528464f}, + {-0.978148f, -0.20791173f}, + {-0.9510569f, -0.3090171f}, + {-0.91354585f, -0.4067368f}, + {-0.8660258f, -0.5000002f}, + {-0.80901736f, -0.5877855f}, + {-0.7431452f, -0.66913086f}, + {-0.66913104f, -0.7431451f}, + {-0.58778566f, -0.80901736f}, + {-0.50000036f, -0.86602587f}, + {-0.40673697f, -0.91354597f}, + {-0.30901727f, -0.9510571f}, + {-0.20791191f, -0.9781482f}, + {-0.10452862f, -0.9945225f}, + {-9.685755E-8f, -1.0000006f}, + {0.10452843f, -0.9945225f}, + {0.20791173f, -0.9781482f}, + {0.30901712f, -0.95105714f}, + {0.40673685f, -0.9135461f}, + {0.5000003f, -0.86602604f}, + {0.5877856f, -0.8090176f}, + {0.669131f, -0.7431454f}, + {0.7431453f, -0.66913116f}, + {0.80901754f, -0.5877858f}, + {0.86602604f, -0.5000005f}, + {0.91354614f, -0.40673706f}, + {0.95105726f, -0.30901736f}, + {0.9781484f, -0.20791197f}, + {0.99452275f, -0.104528666f} + }; + } +} diff --git a/SharpJaad.AAC/Filterbank/FilterBank.cs b/SharpJaad.AAC/Filterbank/FilterBank.cs new file mode 100644 index 0000000..89f2f24 --- /dev/null +++ b/SharpJaad.AAC/Filterbank/FilterBank.cs @@ -0,0 +1,211 @@ +using SharpJaad.AAC.Syntax; +using static SharpJaad.AAC.Syntax.ICSInfo; + +namespace SharpJaad.AAC.Filterbank +{ + public class FilterBank + { + private float[][] _LONG_WINDOWS;// = {SINE_LONG, KBD_LONG}; + private float[][] _SHORT_WINDOWS;// = {SINE_SHORT, KBD_SHORT}; + private int _length; + private int _shortLen; + private int _mid; + private int _trans; + private MDCT _mdctShort, _mdctLong; + private float[] _buf; + private float[][] _overlaps; + + public FilterBank(bool smallFrames, int channels) + { + if (smallFrames) + { + _length = Constants.WINDOW_SMALL_LEN_LONG; + _shortLen = Constants.WINDOW_SMALL_LEN_SHORT; + _LONG_WINDOWS = new float[][] { SineWindows.SINE_960, KBDWindows.KBD_960 }; + _SHORT_WINDOWS = new float[][] { SineWindows.SINE_120, KBDWindows.KBD_120 }; + } + else + { + _length = Constants.WINDOW_LEN_LONG; + _shortLen = Constants.WINDOW_LEN_SHORT; + _LONG_WINDOWS = new float[][] { SineWindows.SINE_1024, KBDWindows.KBD_1024 }; + _SHORT_WINDOWS = new float[][] { SineWindows.SINE_128, KBDWindows.KBD_128 }; + } + _mid = (_length - _shortLen) / 2; + _trans = _shortLen / 2; + + _mdctShort = new MDCT(_shortLen * 2); + _mdctLong = new MDCT(_length * 2); + + _overlaps = new float[channels][]; + for (int i = 0; i < channels; i++) + { + _overlaps[i] = new float[_length]; + } + + _buf = new float[2 * _length]; + } + + public void Process(WindowSequence windowSequence, int windowShape, int windowShapePrev, float[] input, float[] output, int channel) + { + int i; + float[] overlap = _overlaps[channel]; + switch (windowSequence) + { + case WindowSequence.ONLY_LONG_SEQUENCE: + _mdctLong.Process(input, 0, _buf, 0); + //add second half output of previous frame to windowed output of current frame + for (i = 0; i < _length; i++) + { + output[i] = overlap[i] + _buf[i] * _LONG_WINDOWS[windowShapePrev][i]; + } + + //window the second half and save as overlap for next frame + for (i = 0; i < _length; i++) + { + overlap[i] = _buf[_length + i] * _LONG_WINDOWS[windowShape][_length - 1 - i]; + } + break; + case WindowSequence.LONG_START_SEQUENCE: + _mdctLong.Process(input, 0, _buf, 0); + //add second half output of previous frame to windowed output of current frame + for (i = 0; i < _length; i++) + { + output[i] = overlap[i] + _buf[i] * _LONG_WINDOWS[windowShapePrev][i]; + } + + //window the second half and save as overlap for next frame + for (i = 0; i < _mid; i++) + { + overlap[i] = _buf[_length + i]; + } + for (i = 0; i < _shortLen; i++) + { + overlap[_mid + i] = _buf[_length + _mid + i] * _SHORT_WINDOWS[windowShape][_shortLen - i - 1]; + } + for (i = 0; i < _mid; i++) + { + overlap[_mid + _shortLen + i] = 0; + } + break; + case WindowSequence.EIGHT_SHORT_SEQUENCE: + for (i = 0; i < 8; i++) + { + _mdctShort.Process(input, i * _shortLen, _buf, 2 * i * _shortLen); + } + + //add second half output of previous frame to windowed output of current frame + for (i = 0; i < _mid; i++) + { + output[i] = overlap[i]; + } + for (i = 0; i < _shortLen; i++) + { + output[_mid + i] = overlap[_mid + i] + _buf[i] * _SHORT_WINDOWS[windowShapePrev][i]; + output[_mid + 1 * _shortLen + i] = overlap[_mid + _shortLen * 1 + i] + _buf[_shortLen * 1 + i] * _SHORT_WINDOWS[windowShape][_shortLen - 1 - i] + _buf[_shortLen * 2 + i] * _SHORT_WINDOWS[windowShape][i]; + output[_mid + 2 * _shortLen + i] = overlap[_mid + _shortLen * 2 + i] + _buf[_shortLen * 3 + i] * _SHORT_WINDOWS[windowShape][_shortLen - 1 - i] + _buf[_shortLen * 4 + i] * _SHORT_WINDOWS[windowShape][i]; + output[_mid + 3 * _shortLen + i] = overlap[_mid + _shortLen * 3 + i] + _buf[_shortLen * 5 + i] * _SHORT_WINDOWS[windowShape][_shortLen - 1 - i] + _buf[_shortLen * 6 + i] * _SHORT_WINDOWS[windowShape][i]; + if (i < _trans) output[_mid + 4 * _shortLen + i] = overlap[_mid + _shortLen * 4 + i] + _buf[_shortLen * 7 + i] * _SHORT_WINDOWS[windowShape][_shortLen - 1 - i] + _buf[_shortLen * 8 + i] * _SHORT_WINDOWS[windowShape][i]; + } + + //window the second half and save as overlap for next frame + for (i = 0; i < _shortLen; i++) + { + if (i >= _trans) overlap[_mid + 4 * _shortLen + i - _length] = _buf[_shortLen * 7 + i] * _SHORT_WINDOWS[windowShape][_shortLen - 1 - i] + _buf[_shortLen * 8 + i] * _SHORT_WINDOWS[windowShape][i]; + overlap[_mid + 5 * _shortLen + i - _length] = _buf[_shortLen * 9 + i] * _SHORT_WINDOWS[windowShape][_shortLen - 1 - i] + _buf[_shortLen * 10 + i] * _SHORT_WINDOWS[windowShape][i]; + overlap[_mid + 6 * _shortLen + i - _length] = _buf[_shortLen * 11 + i] * _SHORT_WINDOWS[windowShape][_shortLen - 1 - i] + _buf[_shortLen * 12 + i] * _SHORT_WINDOWS[windowShape][i]; + overlap[_mid + 7 * _shortLen + i - _length] = _buf[_shortLen * 13 + i] * _SHORT_WINDOWS[windowShape][_shortLen - 1 - i] + _buf[_shortLen * 14 + i] * _SHORT_WINDOWS[windowShape][i]; + overlap[_mid + 8 * _shortLen + i - _length] = _buf[_shortLen * 15 + i] * _SHORT_WINDOWS[windowShape][_shortLen - 1 - i]; + } + for (i = 0; i < _mid; i++) + { + overlap[_mid + _shortLen + i] = 0; + } + break; + case WindowSequence.LONG_STOP_SEQUENCE: + _mdctLong.Process(input, 0, _buf, 0); + //add second half output of previous frame to windowed output of current frame + //construct first half window using padding with 1's and 0's + for (i = 0; i < _mid; i++) + { + output[i] = overlap[i]; + } + for (i = 0; i < _shortLen; i++) + { + output[_mid + i] = overlap[_mid + i] + _buf[_mid + i] * _SHORT_WINDOWS[windowShapePrev][i]; + } + for (i = 0; i < _mid; i++) + { + output[_mid + _shortLen + i] = overlap[_mid + _shortLen + i] + _buf[_mid + _shortLen + i]; + } + //window the second half and save as overlap for next frame + for (i = 0; i < _length; i++) + { + overlap[i] = _buf[_length + i] * _LONG_WINDOWS[windowShape][_length - 1 - i]; + } + break; + } + } + + //only for LTP: no overlapping, no short blocks + public void ProcessLTP(WindowSequence windowSequence, int windowShape, int windowShapePrev, float[] input, float[] output) + { + int i; + + switch (windowSequence) + { + case WindowSequence.ONLY_LONG_SEQUENCE: + for (i = _length - 1; i >= 0; i--) + { + _buf[i] = input[i] * _LONG_WINDOWS[windowShapePrev][i]; + _buf[i + _length] = input[i + _length] * _LONG_WINDOWS[windowShape][_length - 1 - i]; + } + break; + + case WindowSequence.LONG_START_SEQUENCE: + for (i = 0; i < _length; i++) + { + _buf[i] = input[i] * _LONG_WINDOWS[windowShapePrev][i]; + } + for (i = 0; i < _mid; i++) + { + _buf[i + _length] = input[i + _length]; + } + for (i = 0; i < _shortLen; i++) + { + _buf[i + _length + _mid] = input[i + _length + _mid] * _SHORT_WINDOWS[windowShape][_shortLen - 1 - i]; + } + for (i = 0; i < _mid; i++) + { + _buf[i + _length + _mid + _shortLen] = 0; + } + break; + + case WindowSequence.LONG_STOP_SEQUENCE: + for (i = 0; i < _mid; i++) + { + _buf[i] = 0; + } + for (i = 0; i < _shortLen; i++) + { + _buf[i + _mid] = input[i + _mid] * _SHORT_WINDOWS[windowShapePrev][i]; + } + for (i = 0; i < _mid; i++) + { + _buf[i + _mid + _shortLen] = input[i + _mid + _shortLen]; + } + for (i = 0; i < _length; i++) + { + _buf[i + _length] = input[i + _length] * _LONG_WINDOWS[windowShape][_length - 1 - i]; + } + break; + } + _mdctLong.ProcessForward(_buf, output); + } + + public float[] GetOverlap(int channel) + { + return _overlaps[channel]; + } + } +} diff --git a/SharpJaad.AAC/Filterbank/KBDWindows.cs b/SharpJaad.AAC/Filterbank/KBDWindows.cs new file mode 100644 index 0000000..1824835 --- /dev/null +++ b/SharpJaad.AAC/Filterbank/KBDWindows.cs @@ -0,0 +1,2246 @@ +namespace SharpJaad.AAC.Filterbank +{ + public static class KBDWindows + { + public static float[] KBD_1024 = { + 0.00029256153896361f, + 0.00042998567353047f, + 0.00054674074589540f, + 0.00065482304299792f, + 0.00075870195068747f, + 0.00086059331713336f, + 0.00096177541439010f, + 0.0010630609410878f, + 0.0011650036308132f, + 0.0012680012194148f, + 0.0013723517232956f, + 0.0014782864109136f, + 0.0015859901976719f, + 0.0016956148252373f, + 0.0018072876903517f, + 0.0019211179405514f, + 0.0020372007924215f, + 0.0021556206591754f, + 0.0022764534599614f, + 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0.9999995957506171f, + 0.9999996871201549f, + 0.9999997679515386f, + 0.9999998389748399f, + 0.9999999008865869f, + 0.9999999543507984f + }; + public static float[] KBD_120 = { + 0.0000452320086910f, + 0.0001274564692111f, + 0.0002529398385345f, + 0.0004335140496648f, + 0.0006827100966952f, + 0.0010158708222246f, + 0.0014502162869659f, + 0.0020048865156264f, + 0.0027009618393178f, + 0.0035614590925043f, + 0.0046113018122711f, + 0.0058772627936484f, + 0.0073878776584103f, + 0.0091733284512589f, + 0.0112652966728373f, + 0.0136967855861945f, + 0.0165019120857793f, + 0.0197156688892217f, + 0.0233736582950619f, + 0.0275117992367496f, + 0.0321660098468534f, + 0.0373718682174417f, + 0.0431642544948834f, + 0.0495769778717676f, + 0.0566423924273392f, + 0.0643910061132260f, + 0.0728510874761729f, + 0.0820482749475221f, + 0.0920051937045235f, + 0.1027410852163450f, + 0.1142714546239370f, + 0.1266077410648368f, + 0.1397570159398145f, + 0.1537217139274270f, + 0.1684994012857075f, + 0.1840825856392944f, + 0.2004585710384133f, + 0.2176093615976121f, + 0.2355116164824983f, + 0.2541366584185075f, + 0.2734505372545160f, + 0.2934141494343369f, + 0.3139834135200387f, + 0.3351095011824163f, + 0.3567391223361566f, + 0.3788148623608774f, + 0.4012755686250732f, + 0.4240567828288110f, + 0.4470912150133537f, + 0.4703092544619664f, + 0.4936395121456694f, + 0.5170093888596962f, + 0.5403456627591340f, + 0.5635750896430154f, + 0.5866250090612892f, + 0.6094239491338723f, + 0.6319022228794100f, + 0.6539925088563087f, + 0.6756304090216887f, + 0.6967549769155277f, + 0.7173092095766250f, + 0.7372404969921184f, + 0.7565010233699827f, + 0.7750481150999984f, + 0.7928445309277697f, + 0.8098586906021583f, + 0.8260648390616000f, + 0.8414431440907889f, + 0.8559797262966709f, + 0.8696666212110165f, + 0.8825016743142358f, + 0.8944883707784486f, + 0.9056356027326216f, + 0.9159573778427816f, + 0.9254724739583072f, + 0.9342040454819434f, + 0.9421791879559176f, + 0.9494284680976784f, + 0.9559854271440150f, + 0.9618860658493898f, + 0.9671683198119525f, + 0.9718715339497299f, + 0.9760359449042233f, + 0.9797021798981759f, + 0.9829107801140203f, + 0.9857017559923277f, + 0.9881141809867999f, + 0.9901858292742826f, + 0.9919528617340944f, + 0.9934495632180476f, + 0.9947081327749199f, + 0.9957585271195989f, + 0.9966283562984427f, + 0.9973428292485683f, + 0.9979247458259197f, + 0.9983945309245774f, + 0.9987703055583410f, + 0.9990679892449266f, + 0.9993014277313617f, + 0.9994825400228521f, + 0.9996214788122335f, + 0.9997267987294857f, + 0.9998056273097539f, + 0.9998638341781910f, + 0.9999061946325793f, + 0.9999365445321382f, + 0.9999579241373735f, + 0.9999727092594598f, + 0.9999827287418790f, + 0.9999893678912771f, + 0.9999936579844555f, + 0.9999963523959187f, + 0.9999979902130101f, + 0.9999989484358076f, + 0.9999994840031031f, + 0.9999997669534347f, + 0.9999999060327799f, + 0.9999999680107184f, + 0.9999999918774242f, + 0.9999999989770326f + }; + } +} diff --git a/SharpJaad.AAC/Filterbank/MDCT.cs b/SharpJaad.AAC/Filterbank/MDCT.cs new file mode 100644 index 0000000..5d01e2c --- /dev/null +++ b/SharpJaad.AAC/Filterbank/MDCT.cs @@ -0,0 +1,137 @@ +using SharpJaad.AAC; + +namespace SharpJaad.AAC.Filterbank +{ + public class MDCT + { + private int _N, _N2, _N4, _N8; + private float[][] _sincos; + private FFT _fft; + private float[,] _buf; + private float[] _tmp; + + public MDCT(int length) + { + _N = length; + _N2 = length >> 1; + _N4 = length >> 2; + _N8 = length >> 3; + switch (length) + { + case 2048: + _sincos = MDCTTables.MDCT_TABLE_2048; + break; + case 256: + _sincos = MDCTTables.MDCT_TABLE_128; + break; + case 1920: + _sincos = MDCTTables.MDCT_TABLE_1920; + break; + case 240: + _sincos = MDCTTables.MDCT_TABLE_240; + break; + default: + throw new AACException("unsupported MDCT length: " + length); + } + _fft = new FFT(_N4); + _buf = new float[_N4, 2]; + _tmp = new float[2]; + } + + public void Process(float[] input, int inOff, float[] output, int outOff) + { + int k; + + //pre-IFFT complex multiplication + for (k = 0; k < _N4; k++) + { + _buf[k, 1] = input[inOff + 2 * k] * _sincos[k][0] + input[inOff + _N2 - 1 - 2 * k] * _sincos[k][1]; + _buf[k, 0] = input[inOff + _N2 - 1 - 2 * k] * _sincos[k][0] - input[inOff + 2 * k] * _sincos[k][1]; + } + + //complex IFFT, non-scaling + _fft.Process(_buf, false); + + //post-IFFT complex multiplication + for (k = 0; k < _N4; k++) + { + _tmp[0] = _buf[k, 0]; + _tmp[1] = _buf[k, 1]; + _buf[k, 1] = _tmp[1] * _sincos[k][0] + _tmp[0] * _sincos[k][1]; + _buf[k, 0] = _tmp[0] * _sincos[k][0] - _tmp[1] * _sincos[k][1]; + } + + //reordering + for (k = 0; k < _N8; k += 2) + { + output[outOff + 2 * k] = _buf[_N8 + k, 1]; + output[outOff + 2 + 2 * k] = _buf[_N8 + 1 + k, 1]; + + output[outOff + 1 + 2 * k] = -_buf[_N8 - 1 - k, 0]; + output[outOff + 3 + 2 * k] = -_buf[_N8 - 2 - k, 0]; + + output[outOff + _N4 + 2 * k] = _buf[k, 0]; + output[outOff + _N4 + 2 + 2 * k] = _buf[1 + k, 0]; + + output[outOff + _N4 + 1 + 2 * k] = -_buf[_N4 - 1 - k, 1]; + output[outOff + _N4 + 3 + 2 * k] = -_buf[_N4 - 2 - k, 1]; + + output[outOff + _N2 + 2 * k] = _buf[_N8 + k, 0]; + output[outOff + _N2 + 2 + 2 * k] = _buf[_N8 + 1 + k, 0]; + + output[outOff + _N2 + 1 + 2 * k] = -_buf[_N8 - 1 - k, 1]; + output[outOff + _N2 + 3 + 2 * k] = -_buf[_N8 - 2 - k, 1]; + + output[outOff + _N2 + _N4 + 2 * k] = -_buf[k, 1]; + output[outOff + _N2 + _N4 + 2 + 2 * k] = -_buf[1 + k, 1]; + + output[outOff + _N2 + _N4 + 1 + 2 * k] = _buf[_N4 - 1 - k, 0]; + output[outOff + _N2 + _N4 + 3 + 2 * k] = _buf[_N4 - 2 - k, 0]; + } + } + + public void ProcessForward(float[] input, float[] output) + { + int n, k; + //pre-FFT complex multiplication + for (k = 0; k < _N8; k++) + { + n = k << 1; + _tmp[0] = input[_N - _N4 - 1 - n] + input[_N - _N4 + n]; + _tmp[1] = input[_N4 + n] - input[_N4 - 1 - n]; + + _buf[k, 0] = _tmp[0] * _sincos[k][0] + _tmp[1] * _sincos[k][1]; + _buf[k, 1] = _tmp[1] * _sincos[k][0] - _tmp[0] * _sincos[k][1]; + + _buf[k, 0] *= _N; + _buf[k, 1] *= _N; + + _tmp[0] = input[_N2 - 1 - n] - input[n]; + _tmp[1] = input[_N2 + n] + input[_N - 1 - n]; + + _buf[k + _N8, 0] = _tmp[0] * _sincos[k + _N8][0] + _tmp[1] * _sincos[k + _N8][1]; + _buf[k + _N8, 1] = _tmp[1] * _sincos[k + _N8][0] - _tmp[0] * _sincos[k + _N8][1]; + + _buf[k + _N8, 0] *= _N; + _buf[k + _N8, 1] *= _N; + } + + //complex FFT, non-scaling + _fft.Process(_buf, true); + + //post-FFT complex multiplication + for (k = 0; k < _N4; k++) + { + n = k << 1; + + _tmp[0] = _buf[k, 0] * _sincos[k][0] + _buf[k, 1] * _sincos[k][1]; + _tmp[1] = _buf[k, 1] * _sincos[k][0] - _buf[k, 0] * _sincos[k][1]; + + output[n] = -_tmp[0]; + output[_N2 - 1 - n] = _tmp[1]; + output[_N2 + n] = -_tmp[1]; + output[_N - 1 - n] = _tmp[0]; + } + } + } +} diff --git a/SharpJaad.AAC/Filterbank/MDCTTables.cs b/SharpJaad.AAC/Filterbank/MDCTTables.cs new file mode 100644 index 0000000..56ad5c7 --- /dev/null +++ b/SharpJaad.AAC/Filterbank/MDCTTables.cs @@ -0,0 +1,1130 @@ +namespace SharpJaad.AAC.Filterbank +{ + public static class MDCTTables + { + public static float[][] MDCT_TABLE_2048 = { + new float[] {0.031249997702054f, 0.000011984224612f}, + new float[] {0.031249813866531f, 0.000107857810004f}, + new float[] {0.031249335895858f, 0.000203730380198f}, + new float[] {0.031248563794535f, 0.000299601032804f}, + new float[] {0.031247497569829f, 0.000395468865451f}, + new float[] {0.031246137231775f, 0.000491332975794f}, + new float[] {0.031244482793177f, 0.000587192461525f}, + new float[] {0.031242534269608f, 0.000683046420376f}, + new float[] {0.031240291679407f, 0.000778893950134f}, + new float[] {0.031237755043684f, 0.000874734148645f}, + new float[] {0.031234924386313f, 0.000970566113826f}, + new float[] {0.031231799733938f, 0.001066388943669f}, + new float[] {0.031228381115970f, 0.001162201736253f}, + new float[] {0.031224668564585f, 0.001258003589751f}, + new float[] {0.031220662114728f, 0.001353793602441f}, + new float[] {0.031216361804108f, 0.001449570872710f}, + new float[] {0.031211767673203f, 0.001545334499065f}, + new float[] {0.031206879765253f, 0.001641083580144f}, + new float[] {0.031201698126266f, 0.001736817214719f}, + new float[] {0.031196222805014f, 0.001832534501709f}, + new float[] {0.031190453853031f, 0.001928234540186f}, + new float[] {0.031184391324617f, 0.002023916429386f}, + new float[] {0.031178035276836f, 0.002119579268713f}, + new float[] {0.031171385769513f, 0.002215222157753f}, + new float[] {0.031164442865236f, 0.002310844196278f}, + new float[] {0.031157206629353f, 0.002406444484258f}, + new float[] {0.031149677129975f, 0.002502022121865f}, + new float[] {0.031141854437973f, 0.002597576209488f}, + new float[] {0.031133738626977f, 0.002693105847734f}, + new float[] {0.031125329773375f, 0.002788610137442f}, + new float[] {0.031116627956316f, 0.002884088179689f}, + new float[] {0.031107633257703f, 0.002979539075801f}, + new float[] {0.031098345762200f, 0.003074961927355f}, + new float[] {0.031088765557222f, 0.003170355836197f}, + new float[] {0.031078892732942f, 0.003265719904442f}, + new float[] {0.031068727382288f, 0.003361053234488f}, + new float[] {0.031058269600939f, 0.003456354929021f}, + new float[] {0.031047519487329f, 0.003551624091024f}, + new float[] {0.031036477142640f, 0.003646859823790f}, + new float[] {0.031025142670809f, 0.003742061230921f}, + new float[] {0.031013516178519f, 0.003837227416347f}, + new float[] {0.031001597775203f, 0.003932357484328f}, + new float[] {0.030989387573042f, 0.004027450539462f}, + new float[] {0.030976885686963f, 0.004122505686697f}, + new float[] {0.030964092234638f, 0.004217522031340f}, + new float[] {0.030951007336485f, 0.004312498679058f}, + new float[] {0.030937631115663f, 0.004407434735897f}, + new float[] {0.030923963698074f, 0.004502329308281f}, + new float[] {0.030910005212362f, 0.004597181503027f}, + new float[] {0.030895755789908f, 0.004691990427350f}, + new float[] {0.030881215564835f, 0.004786755188872f}, + new float[] {0.030866384674000f, 0.004881474895632f}, + new float[] {0.030851263256996f, 0.004976148656090f}, + new float[] {0.030835851456154f, 0.005070775579142f}, + new float[] {0.030820149416533f, 0.005165354774124f}, + new float[] {0.030804157285929f, 0.005259885350819f}, + new float[] {0.030787875214864f, 0.005354366419469f}, + new float[] {0.030771303356593f, 0.005448797090784f}, + new float[] {0.030754441867095f, 0.005543176475946f}, + new float[] {0.030737290905077f, 0.005637503686619f}, + new float[] {0.030719850631972f, 0.005731777834961f}, + new float[] {0.030702121211932f, 0.005825998033626f}, + new float[] {0.030684102811835f, 0.005920163395780f}, + new float[] {0.030665795601276f, 0.006014273035101f}, + new float[] {0.030647199752570f, 0.006108326065793f}, + new float[] {0.030628315440748f, 0.006202321602594f}, + new float[] {0.030609142843557f, 0.006296258760782f}, + new float[] {0.030589682141455f, 0.006390136656185f}, + new float[] {0.030569933517616f, 0.006483954405188f}, + new float[] {0.030549897157919f, 0.006577711124743f}, + new float[] {0.030529573250956f, 0.006671405932375f}, + new float[] {0.030508961988022f, 0.006765037946194f}, + new float[] {0.030488063563118f, 0.006858606284900f}, + new float[] {0.030466878172949f, 0.006952110067791f}, + new float[] {0.030445406016919f, 0.007045548414774f}, + new float[] {0.030423647297133f, 0.007138920446372f}, + new float[] {0.030401602218392f, 0.007232225283733f}, + new float[] {0.030379270988192f, 0.007325462048634f}, + new float[] {0.030356653816724f, 0.007418629863497f}, + new float[] {0.030333750916869f, 0.007511727851390f}, + new float[] {0.030310562504198f, 0.007604755136040f}, + new float[] {0.030287088796968f, 0.007697710841838f}, + new float[] {0.030263330016124f, 0.007790594093851f}, + new float[] {0.030239286385293f, 0.007883404017824f}, + new float[] {0.030214958130781f, 0.007976139740197f}, + new float[] {0.030190345481576f, 0.008068800388104f}, + new float[] {0.030165448669342f, 0.008161385089390f}, + new float[] {0.030140267928416f, 0.008253892972610f}, + new float[] {0.030114803495809f, 0.008346323167047f}, + new float[] {0.030089055611203f, 0.008438674802711f}, + new float[] {0.030063024516947f, 0.008530947010354f}, + new float[] {0.030036710458054f, 0.008623138921475f}, + new float[] {0.030010113682202f, 0.008715249668328f}, + new float[] {0.029983234439732f, 0.008807278383932f}, + new float[] {0.029956072983640f, 0.008899224202078f}, + new float[] {0.029928629569580f, 0.008991086257336f}, + new float[] {0.029900904455860f, 0.009082863685067f}, + new float[] {0.029872897903441f, 0.009174555621425f}, + new float[] {0.029844610175929f, 0.009266161203371f}, + new float[] {0.029816041539579f, 0.009357679568679f}, + new float[] {0.029787192263292f, 0.009449109855944f}, + new float[] {0.029758062618606f, 0.009540451204587f}, + new float[] {0.029728652879702f, 0.009631702754871f}, + new float[] {0.029698963323395f, 0.009722863647900f}, + new float[] {0.029668994229134f, 0.009813933025633f}, + new float[] {0.029638745879000f, 0.009904910030891f}, + new float[] {0.029608218557702f, 0.009995793807363f}, + new float[] {0.029577412552575f, 0.010086583499618f}, + new float[] {0.029546328153577f, 0.010177278253107f}, + new float[] {0.029514965653285f, 0.010267877214177f}, + new float[] {0.029483325346896f, 0.010358379530076f}, + new float[] {0.029451407532220f, 0.010448784348962f}, + new float[] {0.029419212509679f, 0.010539090819911f}, + new float[] {0.029386740582307f, 0.010629298092923f}, + new float[] {0.029353992055740f, 0.010719405318933f}, + new float[] {0.029320967238220f, 0.010809411649818f}, + new float[] {0.029287666440590f, 0.010899316238403f}, + new float[] {0.029254089976290f, 0.010989118238474f}, + new float[] {0.029220238161353f, 0.011078816804778f}, + new float[] {0.029186111314406f, 0.011168411093039f}, + new float[] {0.029151709756664f, 0.011257900259961f}, + new float[] {0.029117033811927f, 0.011347283463239f}, + new float[] {0.029082083806579f, 0.011436559861563f}, + new float[] {0.029046860069582f, 0.011525728614630f}, + new float[] {0.029011362932476f, 0.011614788883150f}, + new float[] {0.028975592729373f, 0.011703739828853f}, + new float[] {0.028939549796957f, 0.011792580614500f}, + new float[] {0.028903234474475f, 0.011881310403886f}, + new float[] {0.028866647103744f, 0.011969928361855f}, + new float[] {0.028829788029135f, 0.012058433654299f}, + new float[] {0.028792657597583f, 0.012146825448172f}, + new float[] {0.028755256158571f, 0.012235102911499f}, + new float[] {0.028717584064137f, 0.012323265213377f}, + new float[] {0.028679641668864f, 0.012411311523990f}, + new float[] {0.028641429329882f, 0.012499241014612f}, + new float[] {0.028602947406859f, 0.012587052857618f}, + new float[] {0.028564196262001f, 0.012674746226488f}, + new float[] {0.028525176260050f, 0.012762320295819f}, + new float[] {0.028485887768276f, 0.012849774241331f}, + new float[] {0.028446331156478f, 0.012937107239875f}, + new float[] {0.028406506796976f, 0.013024318469437f}, + new float[] {0.028366415064615f, 0.013111407109155f}, + new float[] {0.028326056336751f, 0.013198372339315f}, + new float[] {0.028285430993258f, 0.013285213341368f}, + new float[] {0.028244539416515f, 0.013371929297933f}, + new float[] {0.028203381991411f, 0.013458519392807f}, + new float[] {0.028161959105334f, 0.013544982810971f}, + new float[] {0.028120271148172f, 0.013631318738598f}, + new float[] {0.028078318512309f, 0.013717526363062f}, + new float[] {0.028036101592619f, 0.013803604872943f}, + new float[] {0.027993620786463f, 0.013889553458039f}, + new float[] {0.027950876493687f, 0.013975371309367f}, + new float[] {0.027907869116616f, 0.014061057619178f}, + new float[] {0.027864599060052f, 0.014146611580959f}, + new float[] {0.027821066731270f, 0.014232032389445f}, + new float[] {0.027777272540012f, 0.014317319240622f}, + new float[] {0.027733216898487f, 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float[] {0.019064968510369f, 0.024760643685063f}, + new float[] {0.018988914202748f, 0.024819017655836f}, + new float[] {0.018912681164234f, 0.024877158020562f}, + new float[] {0.018836270112363f, 0.024935064232003f}, + new float[] {0.018759681766343f, 0.024992735745123f}, + new float[] {0.018682916847054f, 0.025050172017095f}, + new float[] {0.018605976077037f, 0.025107372507308f}, + new float[] {0.018528860180486f, 0.025164336677369f}, + new float[] {0.018451569883247f, 0.025221063991110f}, + new float[] {0.018374105912805f, 0.025277553914591f}, + new float[] {0.018296468998280f, 0.025333805916107f}, + new float[] {0.018218659870421f, 0.025389819466194f}, + new float[] {0.018140679261596f, 0.025445594037630f}, + new float[] {0.018062527905790f, 0.025501129105445f}, + new float[] {0.017984206538592f, 0.025556424146920f}, + new float[] {0.017905715897192f, 0.025611478641598f}, + new float[] {0.017827056720375f, 0.025666292071285f}, + new float[] {0.017748229748511f, 0.025720863920056f}, + new float[] {0.017669235723550f, 0.025775193674260f}, + new float[] {0.017590075389012f, 0.025829280822525f}, + new float[] {0.017510749489986f, 0.025883124855762f}, + new float[] {0.017431258773116f, 0.025936725267170f}, + new float[] {0.017351603986600f, 0.025990081552242f}, + new float[] {0.017271785880180f, 0.026043193208768f}, + new float[] {0.017191805205132f, 0.026096059736841f}, + new float[] {0.017111662714267f, 0.026148680638861f}, + new float[] {0.017031359161915f, 0.026201055419541f}, + new float[] {0.016950895303924f, 0.026253183585908f}, + new float[] {0.016870271897651f, 0.026305064647313f}, + new float[] {0.016789489701954f, 0.026356698115431f}, + new float[] {0.016708549477186f, 0.026408083504269f}, + new float[] {0.016627451985187f, 0.026459220330167f}, + new float[] {0.016546197989277f, 0.026510108111806f}, + new float[] {0.016464788254250f, 0.026560746370212f}, + new float[] {0.016383223546365f, 0.026611134628757f}, + new float[] {0.016301504633341f, 0.026661272413168f}, + new float[] {0.016219632284346f, 0.026711159251530f}, + new float[] {0.016137607269996f, 0.026760794674288f}, + new float[] {0.016055430362340f, 0.026810178214254f}, + new float[] {0.015973102334858f, 0.026859309406613f}, + new float[] {0.015890623962454f, 0.026908187788922f}, + new float[] {0.015807996021446f, 0.026956812901119f}, + new float[] {0.015725219289558f, 0.027005184285527f}, + new float[] {0.015642294545918f, 0.027053301486856f}, + new float[] {0.015559222571044f, 0.027101164052208f}, + new float[] {0.015476004146842f, 0.027148771531083f}, + new float[] {0.015392640056594f, 0.027196123475380f}, + new float[] {0.015309131084956f, 0.027243219439406f}, + new float[] {0.015225478017946f, 0.027290058979875f}, + new float[] {0.015141681642938f, 0.027336641655915f}, + new float[] {0.015057742748656f, 0.027382967029073f}, + new float[] {0.014973662125164f, 0.027429034663317f}, + new float[] {0.014889440563862f, 0.027474844125040f}, + new float[] {0.014805078857474f, 0.027520394983066f}, + new float[] {0.014720577800046f, 0.027565686808654f}, + new float[] {0.014635938186934f, 0.027610719175499f}, + new float[] {0.014551160814797f, 0.027655491659740f}, + new float[] {0.014466246481592f, 0.027700003839960f}, + new float[] {0.014381195986567f, 0.027744255297195f}, + new float[] {0.014296010130247f, 0.027788245614933f}, + new float[] {0.014210689714436f, 0.027831974379120f}, + new float[] {0.014125235542201f, 0.027875441178165f}, + new float[] {0.014039648417870f, 0.027918645602941f}, + new float[] {0.013953929147020f, 0.027961587246792f}, + new float[] {0.013868078536476f, 0.028004265705534f}, + new float[] {0.013782097394294f, 0.028046680577462f}, + new float[] {0.013695986529763f, 0.028088831463351f}, + new float[] {0.013609746753390f, 0.028130717966461f}, + new float[] {0.013523378876898f, 0.028172339692540f}, + new float[] {0.013436883713214f, 0.028213696249828f}, + new float[] {0.013350262076462f, 0.028254787249062f}, + new float[] {0.013263514781960f, 0.028295612303478f}, + new float[] {0.013176642646205f, 0.028336171028814f}, + new float[] {0.013089646486871f, 0.028376463043317f}, + new float[] {0.013002527122799f, 0.028416487967743f}, + new float[] {0.012915285373990f, 0.028456245425361f}, + new float[] {0.012827922061597f, 0.028495735041960f}, + new float[] {0.012740438007915f, 0.028534956445849f}, + new float[] {0.012652834036379f, 0.028573909267859f}, + new float[] {0.012565110971550f, 0.028612593141354f}, + new float[] {0.012477269639111f, 0.028651007702224f}, + new float[] {0.012389310865858f, 0.028689152588899f}, + new float[] {0.012301235479693f, 0.028727027442343f}, + new float[] {0.012213044309615f, 0.028764631906065f}, + new float[] {0.012124738185712f, 0.028801965626115f}, + new float[] {0.012036317939156f, 0.028839028251097f}, + new float[] {0.011947784402191f, 0.028875819432161f}, + new float[] {0.011859138408130f, 0.028912338823015f}, + new float[] {0.011770380791341f, 0.028948586079925f}, + new float[] {0.011681512387245f, 0.028984560861718f}, + new float[] {0.011592534032306f, 0.029020262829785f}, + new float[] {0.011503446564022f, 0.029055691648087f}, + new float[] {0.011414250820918f, 0.029090846983152f}, + new float[] {0.011324947642537f, 0.029125728504087f}, + new float[] {0.011235537869437f, 0.029160335882573f}, + new float[] {0.011146022343175f, 0.029194668792871f}, + new float[] {0.011056401906305f, 0.029228726911828f}, + new float[] {0.010966677402371f, 0.029262509918876f}, + new float[] {0.010876849675891f, 0.029296017496036f}, + new float[] {0.010786919572361f, 0.029329249327922f}, + new float[] {0.010696887938235f, 0.029362205101743f}, + new float[] {0.010606755620926f, 0.029394884507308f}, + new float[] {0.010516523468793f, 0.029427287237024f}, + new float[] {0.010426192331137f, 0.029459412985906f}, + new float[] {0.010335763058187f, 0.029491261451573f}, + new float[] {0.010245236501099f, 0.029522832334255f}, + new float[] {0.010154613511943f, 0.029554125336796f}, + new float[] {0.010063894943698f, 0.029585140164654f}, + new float[] {0.009973081650240f, 0.029615876525905f}, + new float[] {0.009882174486340f, 0.029646334131247f}, + new float[] {0.009791174307650f, 0.029676512694001f}, + new float[] {0.009700081970699f, 0.029706411930116f}, + new float[] {0.009608898332881f, 0.029736031558168f}, + new float[] {0.009517624252453f, 0.029765371299366f}, + new float[] {0.009426260588521f, 0.029794430877553f}, + new float[] {0.009334808201034f, 0.029823210019210f}, + new float[] {0.009243267950778f, 0.029851708453456f}, + new float[] {0.009151640699363f, 0.029879925912053f}, + new float[] {0.009059927309220f, 0.029907862129408f}, + new float[] {0.008968128643591f, 0.029935516842573f}, + new float[] {0.008876245566520f, 0.029962889791254f}, + new float[] {0.008784278942845f, 0.029989980717805f}, + new float[] {0.008692229638191f, 0.030016789367235f}, + new float[] {0.008600098518961f, 0.030043315487212f}, + new float[] {0.008507886452329f, 0.030069558828062f}, + new float[] {0.008415594306230f, 0.030095519142772f}, + new float[] {0.008323222949351f, 0.030121196186994f}, + new float[] {0.008230773251129f, 0.030146589719046f}, + new float[] {0.008138246081733f, 0.030171699499915f}, + new float[] {0.008045642312067f, 0.030196525293257f}, + new float[] {0.007952962813750f, 0.030221066865402f}, + new float[] {0.007860208459119f, 0.030245323985357f}, + new float[] {0.007767380121212f, 0.030269296424803f}, + new float[] {0.007674478673766f, 0.030292983958103f}, + new float[] {0.007581504991203f, 0.030316386362302f}, + new float[] {0.007488459948628f, 0.030339503417126f}, + new float[] {0.007395344421816f, 0.030362334904989f}, + new float[] {0.007302159287206f, 0.030384880610993f}, + new float[] {0.007208905421891f, 0.030407140322928f}, + new float[] {0.007115583703613f, 0.030429113831278f}, + new float[] {0.007022195010752f, 0.030450800929220f}, + new float[] {0.006928740222316f, 0.030472201412626f}, + new float[] {0.006835220217939f, 0.030493315080068f}, + new float[] {0.006741635877866f, 0.030514141732814f}, + new float[] {0.006647988082948f, 0.030534681174838f}, + new float[] {0.006554277714635f, 0.030554933212813f}, + new float[] {0.006460505654964f, 0.030574897656119f}, + new float[] {0.006366672786553f, 0.030594574316845f}, + new float[] {0.006272779992593f, 0.030613963009786f}, + new float[] {0.006178828156839f, 0.030633063552447f}, + new float[] {0.006084818163601f, 0.030651875765048f}, + new float[] {0.005990750897737f, 0.030670399470520f}, + new float[] {0.005896627244644f, 0.030688634494512f}, + new float[] {0.005802448090250f, 0.030706580665388f}, + new float[] {0.005708214321004f, 0.030724237814232f}, + new float[] {0.005613926823871f, 0.030741605774849f}, + new float[] {0.005519586486321f, 0.030758684383764f}, + new float[] {0.005425194196321f, 0.030775473480228f}, + new float[] {0.005330750842327f, 0.030791972906214f}, + new float[] {0.005236257313276f, 0.030808182506425f}, + new float[] {0.005141714498576f, 0.030824102128288f}, + new float[] {0.005047123288102f, 0.030839731621963f}, + new float[] {0.004952484572181f, 0.030855070840339f}, + new float[] {0.004857799241589f, 0.030870119639036f}, + new float[] {0.004763068187541f, 0.030884877876411f}, + new float[] {0.004668292301681f, 0.030899345413553f}, + new float[] {0.004573472476075f, 0.030913522114288f}, + new float[] {0.004478609603205f, 0.030927407845180f}, + new float[] {0.004383704575956f, 0.030941002475530f}, + new float[] {0.004288758287610f, 0.030954305877381f}, + new float[] {0.004193771631837f, 0.030967317925516f}, + new float[] {0.004098745502689f, 0.030980038497461f}, + new float[] {0.004003680794587f, 0.030992467473486f}, + new float[] {0.003908578402316f, 0.031004604736602f}, + new float[] {0.003813439221017f, 0.031016450172571f}, + new float[] {0.003718264146176f, 0.031028003669899f}, + new float[] {0.003623054073616f, 0.031039265119839f}, + new float[] {0.003527809899492f, 0.031050234416394f}, + new float[] {0.003432532520278f, 0.031060911456318f}, + new float[] {0.003337222832760f, 0.031071296139114f}, + new float[] {0.003241881734029f, 0.031081388367037f}, + new float[] {0.003146510121474f, 0.031091188045095f}, + new float[] {0.003051108892766f, 0.031100695081051f}, + new float[] {0.002955678945860f, 0.031109909385419f}, + new float[] {0.002860221178978f, 0.031118830871473f}, + new float[] {0.002764736490604f, 0.031127459455239f}, + new float[] {0.002669225779478f, 0.031135795055501f}, + new float[] {0.002573689944583f, 0.031143837593803f}, + new float[] {0.002478129885137f, 0.031151586994444f}, + new float[] {0.002382546500589f, 0.031159043184484f}, + new float[] {0.002286940690606f, 0.031166206093743f}, + new float[] {0.002191313355067f, 0.031173075654800f}, + new float[] {0.002095665394051f, 0.031179651802998f}, + new float[] {0.001999997707835f, 0.031185934476438f}, + new float[] {0.001904311196878f, 0.031191923615985f}, + new float[] {0.001808606761820f, 0.031197619165268f}, + new float[] {0.001712885303465f, 0.031203021070678f}, + new float[] {0.001617147722782f, 0.031208129281370f}, + new float[] {0.001521394920889f, 0.031212943749264f}, + new float[] {0.001425627799047f, 0.031217464429043f}, + new float[] {0.001329847258653f, 0.031221691278159f}, + new float[] {0.001234054201231f, 0.031225624256825f}, + new float[] {0.001138249528420f, 0.031229263328024f}, + new float[] {0.001042434141971f, 0.031232608457502f}, + new float[] {0.000946608943736f, 0.031235659613775f}, + new float[] {0.000850774835656f, 0.031238416768124f}, + new float[] {0.000754932719759f, 0.031240879894597f}, + new float[] {0.000659083498149f, 0.031243048970010f}, + new float[] {0.000563228072993f, 0.031244923973948f}, + new float[] {0.000467367346520f, 0.031246504888762f}, + new float[] {0.000371502221008f, 0.031247791699571f}, + new float[] {0.000275633598775f, 0.031248784394264f}, + new float[] {0.000179762382174f, 0.031249482963498f}, + new float[] {0.000083889473581f, 0.031249887400697f} + }; + public static float[][] MDCT_TABLE_128 = { + new float[] {0.088387931675923f, 0.000271171628935f}, + new float[] {0.088354655998507f, 0.002440238387037f}, + new float[] {0.088268158780110f, 0.004607835236780f}, + new float[] {0.088128492123423f, 0.006772656498875f}, + new float[] {0.087935740158418f, 0.008933398165942f}, + new float[] {0.087690018991670f, 0.011088758687994f}, + new float[] {0.087391476636423f, 0.013237439756448f}, + new float[] {0.087040292923427f, 0.015378147086172f}, + new float[] {0.086636679392621f, 0.017509591195118f}, + new float[] {0.086180879165703f, 0.019630488181053f}, + new float[] {0.085673166799686f, 0.021739560494940f}, + new float[] {0.085113848121515f, 0.023835537710479f}, + new float[] {0.084503260043847f, 0.025917157289369f}, + new float[] {0.083841770362110f, 0.027983165341813f}, + new float[] {0.083129777532952f, 0.030032317381813f}, + new float[] {0.082367710434230f, 0.032063379076803f}, + new float[] {0.081556028106671f, 0.034075126991164f}, + new float[] {0.080695219477356f, 0.036066349323177f}, + new float[] {0.079785803065216f, 0.038035846634965f}, + new float[] {0.078828326668693f, 0.039982432574992f}, + new float[] {0.077823367035766f, 0.041904934592675f}, + new float[] {0.076771529516540f, 0.043802194644686f}, + new float[] {0.075673447698606f, 0.045673069892513f}, + new float[] {0.074529783025390f, 0.047516433390863f}, + new float[] {0.073341224397728f, 0.049331174766491f}, + new float[] {0.072108487758894f, 0.051116200887052f}, + new float[] {0.070832315663343f, 0.052870436519557f}, + new float[] {0.069513476829429f, 0.054592824978055f}, + new float[] {0.068152765676348f, 0.056282328760143f}, + new float[] {0.066751001845620f, 0.057937930171918f}, + new float[] {0.065309029707361f, 0.059558631940996f}, + new float[] {0.063827717851668f, 0.061143457817234f}, + new float[] {0.062307958565413f, 0.062691453160784f}, + new float[] {0.060750667294763f, 0.064201685517134f}, + new float[] {0.059156782093749f, 0.065673245178784f}, + new float[] {0.057527263059216f, 0.067105245733220f}, + new float[] {0.055863091752499f, 0.068496824596852f}, + new float[] {0.054165270608165f, 0.069847143534609f}, + new float[] {0.052434822330188f, 0.071155389164853f}, + new float[] {0.050672789275903f, 0.072420773449336f}, + new float[] {0.048880232828135f, 0.073642534167879f}, + new float[] {0.047058232755862f, 0.074819935377512f}, + new float[] {0.045207886563797f, 0.075952267855771f}, + new float[] {0.043330308831298f, 0.077038849527912f}, + new float[] {0.041426630540984f, 0.078079025877766f}, + new float[] {0.039497998397473f, 0.079072170341994f}, + new float[] {0.037545574136653f, 0.080017684687506f}, + new float[] {0.035570533825892f, 0.080914999371817f}, + new float[] {0.033574067155622f, 0.081763573886112f}, + new float[] {0.031557376722714f, 0.082562897080836f}, + new float[] {0.029521677306074f, 0.083312487473584f}, + new float[] {0.027468195134911f, 0.084011893539132f}, + new float[] {0.025398167150101f, 0.084660693981419f}, + new float[] {0.023312840259098f, 0.085258497987320f}, + new float[] {0.021213470584847f, 0.085804945462053f}, + new float[] {0.019101322709138f, 0.086299707246093f}, + new float[] {0.016977668910873f, 0.086742485313442f}, + new float[] {0.014843788399692f, 0.087133012951149f}, + new float[] {0.012700966545425f, 0.087471054919968f}, + new float[] {0.010550494103830f, 0.087756407596056f}, + new float[] {0.008393666439096f, 0.087988899093631f}, + new float[] {0.006231782743558f, 0.088168389368510f}, + new float[] {0.004066145255116f, 0.088294770302461f}, + new float[] {0.001898058472816f, 0.088367965768336f} + }; + public static float[][] MDCT_TABLE_1920 = { + new float[] {0.032274858518097f, 0.000013202404176f}, + new float[] {0.032274642494505f, 0.000118821372483f}, + new float[] {0.032274080835421f, 0.000224439068308f}, + new float[] {0.032273173546860f, 0.000330054360572f}, + new float[] {0.032271920638538f, 0.000435666118218f}, + new float[] {0.032270322123873f, 0.000541273210231f}, + new float[] {0.032268378019984f, 0.000646874505642f}, + new float[] {0.032266088347691f, 0.000752468873546f}, + new float[] {0.032263453131514f, 0.000858055183114f}, + new float[] {0.032260472399674f, 0.000963632303600f}, + new float[] {0.032257146184092f, 0.001069199104358f}, + new float[] {0.032253474520390f, 0.001174754454853f}, + new float[] {0.032249457447888f, 0.001280297224671f}, + new float[] {0.032245095009606f, 0.001385826283535f}, + new float[] {0.032240387252262f, 0.001491340501313f}, + new float[] {0.032235334226272f, 0.001596838748031f}, + new float[] {0.032229935985750f, 0.001702319893890f}, + new float[] {0.032224192588507f, 0.001807782809271f}, + new float[] {0.032218104096050f, 0.001913226364749f}, + new float[] {0.032211670573582f, 0.002018649431111f}, + new float[] {0.032204892090000f, 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float[] {0.031732007081789f, 0.005894607130928f}, + new float[] {0.031712547147340f, 0.005998418132675f}, + new float[] {0.031692747596989f, 0.006102164896182f}, + new float[] {0.031672608642773f, 0.006205846310406f}, + new float[] {0.031652130500364f, 0.006309461265002f}, + new float[] {0.031631313389067f, 0.006413008650337f}, + new float[] {0.031610157531816f, 0.006516487357501f}, + new float[] {0.031588663155172f, 0.006619896278321f}, + new float[] {0.031566830489325f, 0.006723234305370f}, + new float[] {0.031544659768083f, 0.006826500331981f}, + new float[] {0.031522151228878f, 0.006929693252258f}, + new float[] {0.031499305112758f, 0.007032811961088f}, + new float[] {0.031476121664387f, 0.007135855354151f}, + new float[] {0.031452601132040f, 0.007238822327937f}, + new float[] {0.031428743767604f, 0.007341711779751f}, + new float[] {0.031404549826572f, 0.007444522607730f}, + new float[] {0.031380019568042f, 0.007547253710853f}, + new float[] {0.031355153254712f, 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float[] {0.030238663854579f, 0.011282281460612f}, + new float[] {0.030201580824838f, 0.011381176667967f}, + new float[] {0.030164174360430f, 0.011479949992062f}, + new float[] {0.030126444861948f, 0.011578600375117f}, + new float[] {0.030088392733446f, 0.011677126760663f}, + new float[] {0.030050018382430f, 0.011775528093563f}, + new float[] {0.030011322219859f, 0.011873803320018f}, + new float[] {0.029972304660138f, 0.011971951387578f}, + new float[] {0.029932966121114f, 0.012069971245157f}, + new float[] {0.029893307024070f, 0.012167861843041f}, + new float[] {0.029853327793724f, 0.012265622132901f}, + new float[] {0.029813028858222f, 0.012363251067801f}, + new float[] {0.029772410649132f, 0.012460747602215f}, + new float[] {0.029731473601443f, 0.012558110692033f}, + new float[] {0.029690218153558f, 0.012655339294575f}, + new float[] {0.029648644747289f, 0.012752432368600f}, + new float[] {0.029606753827855f, 0.012849388874320f}, + new float[] {0.029564545843872f, 0.012946207773407f}, + new float[] {0.029522021247356f, 0.013042888029011f}, + new float[] {0.029479180493710f, 0.013139428605762f}, + new float[] {0.029436024041725f, 0.013235828469789f}, + new float[] {0.029392552353570f, 0.013332086588727f}, + new float[] {0.029348765894794f, 0.013428201931728f}, + new float[] {0.029304665134313f, 0.013524173469475f}, + new float[] {0.029260250544412f, 0.013620000174189f}, + new float[] {0.029215522600735f, 0.013715681019643f}, + new float[] {0.029170481782283f, 0.013811214981173f}, + new float[] {0.029125128571406f, 0.013906601035686f}, + new float[] {0.029079463453801f, 0.014001838161674f}, + new float[] {0.029033486918505f, 0.014096925339225f}, + new float[] {0.028987199457889f, 0.014191861550031f}, + new float[] {0.028940601567655f, 0.014286645777401f}, + new float[] {0.028893693746829f, 0.014381277006273f}, + new float[] {0.028846476497755f, 0.014475754223221f}, + new float[] {0.028798950326094f, 0.014570076416472f}, + new float[] 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float[] {0.027837954353113f, 0.016331410352467f}, + new float[] {0.027784360972039f, 0.016422422234315f}, + new float[] {0.027730470042780f, 0.016513258245214f}, + new float[] {0.027676282142466f, 0.016603917412384f}, + new float[] {0.027621797851405f, 0.016694398764938f}, + new float[] {0.027567017753080f, 0.016784701333894f}, + new float[] {0.027511942434143f, 0.016874824152183f}, + new float[] {0.027456572484404f, 0.016964766254662f}, + new float[] {0.027400908496833f, 0.017054526678124f}, + new float[] {0.027344951067546f, 0.017144104461307f}, + new float[] {0.027288700795801f, 0.017233498644904f}, + new float[] {0.027232158283994f, 0.017322708271577f}, + new float[] {0.027175324137651f, 0.017411732385960f}, + new float[] {0.027118198965418f, 0.017500570034678f}, + new float[] {0.027060783379060f, 0.017589220266351f}, + new float[] {0.027003077993454f, 0.017677682131607f}, + new float[] {0.026945083426576f, 0.017765954683088f}, + new float[] {0.026886800299502f, 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{0.017655584376488f, 0.027017531474792f}, + new float[] {0.017567075330734f, 0.027075164468401f}, + new float[] {0.017478378155718f, 0.027132507508750f}, + new float[] {0.017389493801313f, 0.027189559981742f}, + new float[] {0.017300423219401f, 0.027246321276391f}, + new float[] {0.017211167363854f, 0.027302790784828f}, + new float[] {0.017121727190533f, 0.027358967902310f}, + new float[] {0.017032103657269f, 0.027414852027226f}, + new float[] {0.016942297723858f, 0.027470442561102f}, + new float[] {0.016852310352050f, 0.027525738908608f}, + new float[] {0.016762142505537f, 0.027580740477564f}, + new float[] {0.016671795149944f, 0.027635446678948f}, + new float[] {0.016581269252819f, 0.027689856926900f}, + new float[] {0.016490565783622f, 0.027743970638730f}, + new float[] {0.016399685713714f, 0.027797787234924f}, + new float[] {0.016308630016347f, 0.027851306139149f}, + new float[] {0.016217399666655f, 0.027904526778260f}, + new float[] {0.016125995641641f, 0.027957448582309f}, + new float[] {0.016034418920170f, 0.028010070984544f}, + new float[] {0.015942670482954f, 0.028062393421421f}, + new float[] {0.015850751312545f, 0.028114415332610f}, + new float[] {0.015758662393324f, 0.028166136160998f}, + new float[] {0.015666404711489f, 0.028217555352697f}, + new float[] {0.015573979255046f, 0.028268672357047f}, + new float[] {0.015481387013797f, 0.028319486626627f}, + new float[] {0.015388628979331f, 0.028369997617257f}, + new float[] {0.015295706145012f, 0.028420204788004f}, + new float[] {0.015202619505968f, 0.028470107601191f}, + new float[] {0.015109370059084f, 0.028519705522399f}, + new float[] {0.015015958802984f, 0.028568998020472f}, + new float[] {0.014922386738030f, 0.028617984567529f}, + new float[] {0.014828654866302f, 0.028666664638963f}, + new float[] {0.014734764191593f, 0.028715037713449f}, + new float[] {0.014640715719398f, 0.028763103272951f}, + new float[] {0.014546510456900f, 0.028810860802724f}, + new float[] {0.014452149412962f, 0.028858309791325f}, + new float[] {0.014357633598114f, 0.028905449730613f}, + new float[] {0.014262964024545f, 0.028952280115756f}, + new float[] {0.014168141706090f, 0.028998800445240f}, + new float[] {0.014073167658220f, 0.029045010220868f}, + new float[] {0.013978042898030f, 0.029090908947771f}, + new float[] {0.013882768444231f, 0.029136496134411f}, + new float[] {0.013787345317136f, 0.029181771292585f}, + new float[] {0.013691774538648f, 0.029226733937433f}, + new float[] {0.013596057132255f, 0.029271383587441f}, + new float[] {0.013500194123014f, 0.029315719764447f}, + new float[] {0.013404186537539f, 0.029359741993647f}, + new float[] {0.013308035403995f, 0.029403449803598f}, + new float[] {0.013211741752084f, 0.029446842726223f}, + new float[] {0.013115306613032f, 0.029489920296820f}, + new float[] {0.013018731019584f, 0.029532682054063f}, + new float[] {0.012922016005985f, 0.029575127540008f}, + new float[] {0.012825162607977f, 0.029617256300097f}, + new float[] {0.012728171862781f, 0.029659067883165f}, + new float[] {0.012631044809089f, 0.029700561841444f}, + new float[] {0.012533782487056f, 0.029741737730567f}, + new float[] {0.012436385938281f, 0.029782595109573f}, + new float[] {0.012338856205805f, 0.029823133540913f}, + new float[] {0.012241194334091f, 0.029863352590452f}, + new float[] {0.012143401369021f, 0.029903251827477f}, + new float[] {0.012045478357878f, 0.029942830824699f}, + new float[] {0.011947426349339f, 0.029982089158259f}, + new float[] {0.011849246393462f, 0.030021026407731f}, + new float[] {0.011750939541676f, 0.030059642156129f}, + new float[] {0.011652506846768f, 0.030097935989909f}, + new float[] {0.011553949362874f, 0.030135907498976f}, + new float[] {0.011455268145464f, 0.030173556276684f}, + new float[] {0.011356464251335f, 0.030210881919845f}, + new float[] {0.011257538738598f, 0.030247884028732f}, + new float[] {0.011158492666665f, 0.030284562207083f}, + new float[] {0.011059327096240f, 0.030320916062102f}, + new float[] {0.010960043089307f, 0.030356945204470f}, + new float[] {0.010860641709118f, 0.030392649248343f}, + new float[] {0.010761124020182f, 0.030428027811361f}, + new float[] {0.010661491088253f, 0.030463080514646f}, + new float[] {0.010561743980319f, 0.030497806982812f}, + new float[] {0.010461883764593f, 0.030532206843968f}, + new float[] {0.010361911510496f, 0.030566279729717f}, + new float[] {0.010261828288652f, 0.030600025275167f}, + new float[] {0.010161635170872f, 0.030633443118931f}, + new float[] {0.010061333230142f, 0.030666532903129f}, + new float[] {0.009960923540617f, 0.030699294273397f}, + new float[] {0.009860407177603f, 0.030731726878888f}, + new float[] {0.009759785217550f, 0.030763830372273f}, + new float[] {0.009659058738038f, 0.030795604409750f}, + new float[] {0.009558228817767f, 0.030827048651045f}, + new float[] {0.009457296536545f, 0.030858162759415f}, + new float[] {0.009356262975275f, 0.030888946401653f}, + new float[] {0.009255129215945f, 0.030919399248091f}, + new float[] {0.009153896341616f, 0.030949520972603f}, + new float[] {0.009052565436412f, 0.030979311252611f}, + new float[] {0.008951137585505f, 0.031008769769084f}, + new float[] {0.008849613875105f, 0.031037896206544f}, + new float[] {0.008747995392451f, 0.031066690253072f}, + new float[] {0.008646283225794f, 0.031095151600306f}, + new float[] {0.008544478464390f, 0.031123279943448f}, + new float[] {0.008442582198486f, 0.031151074981266f}, + new float[] {0.008340595519310f, 0.031178536416098f}, + new float[] {0.008238519519057f, 0.031205663953853f}, + new float[] {0.008136355290878f, 0.031232457304017f}, + new float[] {0.008034103928871f, 0.031258916179656f}, + new float[] {0.007931766528065f, 0.031285040297416f}, + new float[] {0.007829344184412f, 0.031310829377528f}, + new float[] {0.007726837994772f, 0.031336283143813f}, + new float[] {0.007624249056906f, 0.031361401323680f}, + new float[] {0.007521578469457f, 0.031386183648135f}, + new float[] {0.007418827331946f, 0.031410629851778f}, + new float[] {0.007315996744755f, 0.031434739672811f}, + new float[] {0.007213087809115f, 0.031458512853036f}, + new float[] {0.007110101627101f, 0.031481949137863f}, + new float[] {0.007007039301610f, 0.031505048276306f}, + new float[] {0.006903901936357f, 0.031527810020993f}, + new float[] {0.006800690635862f, 0.031550234128164f}, + new float[] {0.006697406505433f, 0.031572320357675f}, + new float[] {0.006594050651161f, 0.031594068473000f}, + new float[] {0.006490624179905f, 0.031615478241233f}, + new float[] {0.006387128199278f, 0.031636549433095f}, + new float[] {0.006283563817639f, 0.031657281822929f}, + new float[] {0.006179932144080f, 0.031677675188707f}, + new float[] {0.006076234288412f, 0.031697729312034f}, + new float[] {0.005972471361157f, 0.031717443978146f}, + new float[] {0.005868644473532f, 0.031736818975914f}, + new float[] {0.005764754737440f, 0.031755854097848f}, + new float[] {0.005660803265456f, 0.031774549140098f}, + new float[] {0.005556791170816f, 0.031792903902453f}, + new float[] {0.005452719567407f, 0.031810918188350f}, + new float[] {0.005348589569753f, 0.031828591804869f}, + new float[] {0.005244402293001f, 0.031845924562742f}, + new float[] {0.005140158852914f, 0.031862916276347f}, + new float[] {0.005035860365855f, 0.031879566763717f}, + new float[] {0.004931507948778f, 0.031895875846539f}, + new float[] {0.004827102719212f, 0.031911843350155f}, + new float[] {0.004722645795254f, 0.031927469103567f}, + new float[] {0.004618138295554f, 0.031942752939435f}, + new float[] {0.004513581339303f, 0.031957694694082f}, + new float[] {0.004408976046222f, 0.031972294207493f}, + new float[] {0.004304323536549f, 0.031986551323320f}, + new float[] {0.004199624931030f, 0.032000465888879f}, + new float[] {0.004094881350902f, 0.032014037755158f}, + new float[] {0.003990093917884f, 0.032027266776813f}, + new float[] {0.003885263754166f, 0.032040152812170f}, + new float[] {0.003780391982394f, 0.032052695723232f}, + new float[] {0.003675479725661f, 0.032064895375674f}, + new float[] {0.003570528107494f, 0.032076751638847f}, + new float[] {0.003465538251839f, 0.032088264385780f}, + new float[] {0.003360511283053f, 0.032099433493181f}, + new float[] {0.003255448325892f, 0.032110258841438f}, + new float[] {0.003150350505494f, 0.032120740314619f}, + new float[] {0.003045218947373f, 0.032130877800478f}, + new float[] {0.002940054777404f, 0.032140671190449f}, + new float[] {0.002834859121810f, 0.032150120379653f}, + new float[] {0.002729633107153f, 0.032159225266897f}, + new float[] {0.002624377860318f, 0.032167985754674f}, + new float[] {0.002519094508504f, 0.032176401749168f}, + new float[] {0.002413784179212f, 0.032184473160250f}, + new float[] {0.002308448000231f, 0.032192199901481f}, + new float[] {0.002203087099626f, 0.032199581890114f}, + new float[] {0.002097702605728f, 0.032206619047093f}, + new float[] {0.001992295647121f, 0.032213311297057f}, + new float[] {0.001886867352628f, 0.032219658568338f}, + new float[] {0.001781418851302f, 0.032225660792960f}, + new float[] {0.001675951272410f, 0.032231317906644f}, + new float[] {0.001570465745428f, 0.032236629848809f}, + new float[] {0.001464963400018f, 0.032241596562566f}, + new float[] {0.001359445366028f, 0.032246217994727f}, + new float[] {0.001253912773470f, 0.032250494095799f}, + new float[] {0.001148366752513f, 0.032254424819990f}, + new float[] {0.001042808433471f, 0.032258010125204f}, + new float[] {0.000937238946789f, 0.032261249973045f}, + new float[] {0.000831659423030f, 0.032264144328817f}, + new float[] {0.000726070992868f, 0.032266693161525f}, + new float[] {0.000620474787068f, 0.032268896443871f}, + new float[] {0.000514871936481f, 0.032270754152261f}, + new float[] {0.000409263572030f, 0.032272266266801f}, + new float[] {0.000303650824695f, 0.032273432771295f}, + new float[] {0.000198034825504f, 0.032274253653254f}, + new float[] {0.000092416705518f, 0.032274728903884f} + }; + public static float[][] MDCT_TABLE_240 = { + new float[] {0.091286604111815f, 0.000298735779793f}, + new float[] {0.091247502481454f, 0.002688238127538f}, + new float[] {0.091145864370807f, 0.005075898091152f}, + new float[] {0.090981759437558f, 0.007460079287760f}, + new float[] {0.090755300151030f, 0.009839147718664f}, + new float[] {0.090466641715108f, 0.012211472889198f}, + new float[] {0.090115981961863f, 0.014575428926191f}, + new float[] {0.089703561215976f, 0.016929395692256f}, + new float[] {0.089229662130024f, 0.019271759896156f}, + new float[] {0.088694609490769f, 0.021600916198470f}, + new float[] {0.088098769996564f, 0.023915268311810f}, + new float[] {0.087442552006035f, 0.026213230094844f}, + new float[] {0.086726405258214f, 0.028493226639351f}, + new float[] {0.085950820564309f, 0.030753695349588f}, + new float[] {0.085116329471329f, 0.032993087013213f}, + new float[] {0.084223503897785f, 0.035209866863042f}, + new float[] {0.083272955741727f, 0.037402515628894f}, + new float[] {0.082265336461381f, 0.039569530578832f}, + new float[] {0.081201336628670f, 0.041709426549053f}, + new float[] {0.080081685455930f, 0.043820736961749f}, + new float[] {0.078907150296148f, 0.045902014830227f}, + new float[] {0.077678536117054f, 0.047951833750597f}, + new float[] {0.076396684949434f, 0.049968788879362f}, + new float[] {0.075062475310050f, 0.051951497896226f}, + new float[] {0.073676821599542f, 0.053898601951466f}, + new float[] {0.072240673475749f, 0.055808766597225f}, + new float[] {0.070755015202858f, 0.057680682702068f}, + new float[] {0.069220864976840f, 0.059513067348201f}, + new float[] {0.067639274227625f, 0.061304664710718f}, + new float[] {0.066011326898512f, 0.063054246918278f}, + new float[] {0.064338138703282f, 0.064760614894630f}, + new float[] {0.062620856361546f, 0.066422599180399f}, + new float[] {0.060860656812842f, 0.068039060734572f}, + new float[] {0.059058746410016f, 0.069608891715145f}, + new float[] {0.057216360092450f, 0.071131016238378f}, + new float[] {0.055334760539699f, 0.072604391116154f}, + new float[] {0.053415237306106f, 0.074028006570930f}, + new float[] {0.051459105937014f, 0.075400886927784f}, + new float[] {0.049467707067153f, 0.076722091283096f}, + new float[] {0.047442405501835f, 0.077990714149396f}, + new float[] {0.045384589281588f, 0.079205886075941f}, + new float[] {0.043295668730857f, 0.080366774244592f}, + new float[] {0.041177075491445f, 0.081472583040586f}, + new float[] {0.039030261541332f, 0.082522554597810f}, + new float[] {0.036856698199564f, 0.083515969318206f}, + new float[] {0.034657875117883f, 0.084452146364948f}, + new float[] {0.032435299259796f, 0.085330444129049f}, + new float[] {0.030190493867775f, 0.086150260669096f}, + new float[] {0.027924997419306f, 0.086911034123781f}, + new float[] {0.025640362572491f, 0.087612243096981f}, + new float[] {0.023338155101933f, 0.088253407015092f}, + new float[] {0.021019952825636f, 0.088834086456390f}, + new float[] {0.018687344523641f, 0.089353883452193f}, + new float[] {0.016341928849164f, 0.089812441759604f}, + new float[] {0.013985313232951f, 0.090209447105664f}, + new float[] {0.011619112781631f, 0.090544627402740f}, + new float[] {0.009244949170797f, 0.090817752935000f}, + new float[] {0.006864449533597f, 0.091028636515846f}, + new float[] {0.004479245345574f, 0.091177133616206f}, + new float[] {0.002090971306534f, 0.091263142463585f} + }; + } +} diff --git a/SharpJaad.AAC/Filterbank/SineWindows.cs b/SharpJaad.AAC/Filterbank/SineWindows.cs new file mode 100644 index 0000000..16558b2 --- /dev/null +++ b/SharpJaad.AAC/Filterbank/SineWindows.cs @@ -0,0 +1,2246 @@ +namespace SharpJaad.AAC.Filterbank +{ + public static class SineWindows + { + public static float[] SINE_1024 = { + 0.00076699031874270449f, + 0.002300969151425805f, + 0.0038349425697062275f, + 0.0053689069639963425f, + 0.0069028587247297558f, + 0.0084367942423697988f, + 0.0099707099074180308f, + 0.011504602110422714f, + 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b/SharpJaad.AAC/Gain/FFT.cs @@ -0,0 +1,144 @@ +using System; + +namespace SharpJaad.AAC.Gain +{ + public static class FFT + { + public static float[][] FFT_TABLE_128 = { + new float[] {1.0f, -0.0f}, + new float[] {0.99879545f, -0.049067676f}, + new float[] {0.9951847f, -0.09801714f}, + new float[] {0.9891765f, -0.14673047f}, + new float[] {0.98078525f, -0.19509032f}, + new float[] {0.97003126f, -0.24298018f}, + new float[] {0.95694035f, -0.29028466f}, + new float[] {0.94154406f, -0.33688986f}, + new float[] {0.9238795f, -0.38268343f}, + new float[] {0.9039893f, -0.42755508f}, + new float[] {0.8819213f, -0.47139674f}, + new float[] {0.8577286f, -0.51410276f}, + new float[] {0.8314696f, -0.55557024f}, + new float[] {0.8032075f, -0.5956993f}, + new float[] {0.77301043f, -0.6343933f}, + new float[] {0.7409511f, -0.671559f}, + new float[] {0.70710677f, -0.70710677f}, + new float[] {0.671559f, -0.7409511f}, + new float[] {0.6343933f, -0.77301043f}, + new float[] {0.5956993f, -0.8032075f}, + new float[] {0.55557024f, -0.8314696f}, + new float[] {0.51410276f, -0.8577286f}, + new float[] {0.47139674f, -0.8819213f}, + new float[] {0.42755508f, -0.9039893f}, + new float[] {0.38268343f, -0.9238795f}, + new float[] {0.33688986f, -0.94154406f}, + new float[] {0.29028466f, -0.95694035f}, + new float[] {0.24298018f, -0.97003126f}, + new float[] {0.19509032f, -0.98078525f}, + new float[] {0.14673047f, -0.9891765f}, + new float[] {0.09801714f, -0.9951847f}, + new float[] {0.049067676f, -0.99879545f}, + new float[] {6.123234E-17f, -1.0f}, + new float[] {-0.049067676f, -0.99879545f}, + new float[] {-0.09801714f, -0.9951847f}, + new float[] {-0.14673047f, -0.9891765f}, + new float[] {-0.19509032f, -0.98078525f}, + new float[] {-0.24298018f, -0.97003126f}, + new float[] {-0.29028466f, -0.95694035f}, + new float[] {-0.33688986f, -0.94154406f}, + new float[] {-0.38268343f, -0.9238795f}, + new float[] {-0.42755508f, -0.9039893f}, + new float[] {-0.47139674f, -0.8819213f}, + new float[] {-0.51410276f, -0.8577286f}, + new float[] {-0.55557024f, -0.8314696f}, + new float[] {-0.5956993f, -0.8032075f}, + new float[] {-0.6343933f, -0.77301043f}, + new float[] {-0.671559f, -0.7409511f}, + new float[] {-0.70710677f, -0.70710677f}, + new float[] {-0.7409511f, -0.671559f}, + new float[] {-0.77301043f, -0.6343933f}, + new float[] {-0.8032075f, -0.5956993f}, + new float[] {-0.8314696f, -0.55557024f}, + new float[] {-0.8577286f, -0.51410276f}, + new float[] {-0.8819213f, -0.47139674f}, + new float[] {-0.9039893f, -0.42755508f}, + new float[] {-0.9238795f, -0.38268343f}, + new float[] {-0.94154406f, -0.33688986f}, + new float[] {-0.95694035f, -0.29028466f}, + new float[] {-0.97003126f, -0.24298018f}, + new float[] {-0.98078525f, -0.19509032f}, + new float[] {-0.9891765f, -0.14673047f}, + new float[] {-0.9951847f, -0.09801714f}, + new float[] {-0.99879545f, -0.049067676f} + }; + public static float[][] FFT_TABLE_16 = { + new float[] {1.0f, -0.0f}, + new float[] {0.9238795f, -0.38268343f}, + new float[] {0.70710677f, -0.70710677f}, + new float[] {0.38268343f, -0.9238795f}, + new float[] {6.123234E-17f, -1.0f}, + new float[] {-0.38268343f, -0.9238795f}, + new float[] {-0.70710677f, -0.70710677f}, + new float[] {-0.9238795f, -0.38268343f} + }; + + public static void Process(float[][] input, int n) + { + int ln = (int)Math.Round(Math.Log(n) / Math.Log(2)); + float[][] table = n == 128 ? FFT_TABLE_128 : FFT_TABLE_16; + + //bit-reversal + float[][] rev = new float[n][]; + int i, ii = 0; + for (i = 0; i < n; i++) + { + rev[i][0] = input[ii][0]; + rev[i][1] = input[ii][1]; + int kk = n >> 1; + while (ii >= kk && kk > 0) + { + ii -= kk; + kk >>= 1; + } + ii += kk; + } + + for (i = 0; i < n; i++) + { + input[i][0] = rev[i][0]; + input[i][1] = rev[i][1]; + } + + //calculation + int blocks = n / 2; + int size = 2; + int j, k, l, k0, k1, size2; + float[] a = new float[2]; + for (i = 0; i < ln; i++) + { + size2 = size / 2; + k0 = 0; + k1 = size2; + for (j = 0; j < blocks; ++j) + { + l = 0; + for (k = 0; k < size2; ++k) + { + a[0] = input[k1][0] * table[l][0] - input[k1][1] * table[l][1]; + a[1] = input[k1][0] * table[l][1] + input[k1][1] * table[l][0]; + input[k1][0] = input[k0][0] - a[0]; + input[k1][1] = input[k0][1] - a[1]; + input[k0][0] += a[0]; + input[k0][1] += a[1]; + l += blocks; + k0++; + k1++; + } + k0 += size2; + k1 += size2; + } + blocks = blocks / 2; + size = size * 2; + } + } + } +} diff --git a/SharpJaad.AAC/Gain/GCConstants.cs b/SharpJaad.AAC/Gain/GCConstants.cs new file mode 100644 index 0000000..c100fee --- /dev/null +++ b/SharpJaad.AAC/Gain/GCConstants.cs @@ -0,0 +1,16 @@ +namespace SharpJaad.AAC.Gain +{ + public class GCConstants + { + public const int BANDS = 4; + public const int MAX_CHANNELS = 5; + public const int NPQFTAPS = 96; + public const int NPEPARTS = 64; //number of pre-echo inhibition parts + public const int ID_GAIN = 16; + public static int[] LN_GAIN = + { + -4, -3, -2, -1, 0, 1, 2, 3, + 4, 5, 6, 7, 8, 9, 10, 11 + }; + } +} diff --git a/SharpJaad.AAC/Gain/GainControl.cs b/SharpJaad.AAC/Gain/GainControl.cs new file mode 100644 index 0000000..683e9c5 --- /dev/null +++ b/SharpJaad.AAC/Gain/GainControl.cs @@ -0,0 +1,360 @@ +using SharpJaad.AAC.Syntax; +using System; +using System.Linq; +using static SharpJaad.AAC.Syntax.ICSInfo; + +namespace SharpJaad.AAC.Gain +{ + public class GainControl + { + private int _frameLen; + private int _lbLong; + private int _lbShort; + private IMDCT _imdct; + private IPQF _ipqf; + private float[] _buffer1, _function; + private float[][] _buffer2, _overlap; + private int _maxBand; + private int[][][] _level, _levelPrev; + private int[][][] _location, _locationPrev; + + public GainControl(int frameLen) + { + _frameLen = frameLen; + _lbLong = frameLen / GCConstants.BANDS; + _lbShort = _lbLong / 8; + _imdct = new IMDCT(frameLen); + _ipqf = new IPQF(); + _levelPrev = new int[0][][]; + _locationPrev = new int[0][][]; + _buffer1 = new float[frameLen / 2]; + _buffer2 = new float[GCConstants.BANDS][]; + for (int i = 0; i < GCConstants.BANDS; i++) + { + _buffer2[i] = new float[_lbLong]; + } + _function = new float[_lbLong * 2]; + _overlap = new float[GCConstants.BANDS][]; + for (int i = 0; i < GCConstants.BANDS; i++) + { + _overlap[i] = new float[_lbLong * 2]; + } + } + + public void Decode(BitStream input, WindowSequence winSeq) + { + _maxBand = input.ReadBits(2) + 1; + + int wdLen, locBits, locBits2 = 0; + switch (winSeq) + { + case WindowSequence.ONLY_LONG_SEQUENCE: + wdLen = 1; + locBits = 5; + locBits2 = 5; + break; + case WindowSequence.EIGHT_SHORT_SEQUENCE: + wdLen = 8; + locBits = 2; + locBits2 = 2; + break; + case WindowSequence.LONG_START_SEQUENCE: + wdLen = 2; + locBits = 4; + locBits2 = 2; + break; + case WindowSequence.LONG_STOP_SEQUENCE: + wdLen = 2; + locBits = 4; + locBits2 = 5; + break; + default: + return; + } + _level = new int[_maxBand][][]; + for (int i = 0; i < _maxBand; i++) + { + _level[i] = new int[wdLen][]; + } + _location = new int[_maxBand][][]; + for (int i = 0; i < _maxBand; i++) + { + _location[i] = new int[wdLen][]; + } + + int wd, k, len, bits; + for (int bd = 1; bd < _maxBand; bd++) + { + for (wd = 0; wd < wdLen; wd++) + { + len = input.ReadBits(3); + _level[bd][wd] = new int[len]; + _location[bd][wd] = new int[len]; + for (k = 0; k < len; k++) + { + _level[bd][wd][k] = input.ReadBits(4); + bits = wd == 0 ? locBits : locBits2; + _location[bd][wd][k] = input.ReadBits(bits); + } + } + } + } + + public void Process(float[] data, int winShape, int winShapePrev, WindowSequence winSeq) + { + _imdct.Process(data, _buffer1, winShape, winShapePrev, winSeq); + + for (int i = 0; i < GCConstants.BANDS; i++) + { + Compensate(_buffer1, _buffer2, winSeq, i); + } + + _ipqf.Process(_buffer2, _frameLen, _maxBand, data); + } + + /** + * gain compensation and overlap-add: + * - the gain control function is calculated + * - the gain control function applies to IMDCT output samples as a another IMDCT window + * - the reconstructed time domain signal produces by overlap-add + */ + private void Compensate(float[] input, float[][] output, WindowSequence winSeq, int band) + { + int j; + if (winSeq.Equals(WindowSequence.EIGHT_SHORT_SEQUENCE)) + { + int a, b; + for (int k = 0; k < 8; k++) + { + //calculation + CalculateFunctionData(_lbShort * 2, band, winSeq, k); + //applying + for (j = 0; j < _lbShort * 2; j++) + { + a = band * _lbLong * 2 + k * _lbShort * 2 + j; + input[a] *= _function[j]; + } + //overlapping + for (j = 0; j < _lbShort; j++) + { + a = j + _lbLong * 7 / 16 + _lbShort * k; + b = band * _lbLong * 2 + k * _lbShort * 2 + j; + _overlap[band][a] += input[b]; + } + //store for next frame + for (j = 0; j < _lbShort; j++) + { + a = j + _lbLong * 7 / 16 + _lbShort * (k + 1); + b = band * _lbLong * 2 + k * _lbShort * 2 + _lbShort + j; + + _overlap[band][a] = input[b]; + } + _locationPrev[band][0] = _location[band][k].ToArray(); + _levelPrev[band][0] = _level[band][k].ToArray(); + } + Array.Copy(_overlap[band], 0, output[band], 0, _lbLong); + Array.Copy(_overlap[band], _lbLong, _overlap[band], 0, _lbLong); + } + else + { + //calculation + CalculateFunctionData(_lbLong * 2, band, winSeq, 0); + //applying + for (j = 0; j < _lbLong * 2; j++) + { + input[band * _lbLong * 2 + j] *= _function[j]; + } + //overlapping + for (j = 0; j < _lbLong; j++) + { + output[band][j] = _overlap[band][j] + input[band * _lbLong * 2 + j]; + } + //store for next frame + for (j = 0; j < _lbLong; j++) + { + _overlap[band][j] = input[band * _lbLong * 2 + _lbLong + j]; + } + + int lastBlock = winSeq.Equals(WindowSequence.ONLY_LONG_SEQUENCE) ? 1 : 0; + _locationPrev[band][0] = _location[band][lastBlock].ToArray(); + _levelPrev[band][0] = _level[band][lastBlock].ToArray(); + } + } + + //produces gain control function data, stores it in 'function' array + private void CalculateFunctionData(int samples, int band, WindowSequence winSeq, int blockID) + { + int[] locA = new int[10]; + float[] levA = new float[10]; + float[] modFunc = new float[samples]; + float[] buf1 = new float[samples / 2]; + float[] buf2 = new float[samples / 2]; + float[] buf3 = new float[samples / 2]; + + int maxLocGain0 = 0, maxLocGain1 = 0, maxLocGain2 = 0; + switch (winSeq) + { + case WindowSequence.ONLY_LONG_SEQUENCE: + case WindowSequence.EIGHT_SHORT_SEQUENCE: + maxLocGain0 = maxLocGain1 = samples / 2; + maxLocGain2 = 0; + break; + case WindowSequence.LONG_START_SEQUENCE: + maxLocGain0 = samples / 2; + maxLocGain1 = samples * 7 / 32; + maxLocGain2 = samples / 16; + break; + case WindowSequence.LONG_STOP_SEQUENCE: + maxLocGain0 = samples / 16; + maxLocGain1 = samples * 7 / 32; + maxLocGain2 = samples / 2; + break; + } + + //calculate the fragment modification functions + //for the first half region + CalculateFMD(band, 0, true, maxLocGain0, samples, locA, levA, buf1); + + //for the latter half region + int block = winSeq.Equals(WindowSequence.EIGHT_SHORT_SEQUENCE) ? blockID : 0; + float secLevel = CalculateFMD(band, block, false, maxLocGain1, samples, locA, levA, buf2); + + //for the non-overlapped region + if (winSeq.Equals(WindowSequence.LONG_START_SEQUENCE) || winSeq.Equals(WindowSequence.LONG_STOP_SEQUENCE)) + { + CalculateFMD(band, 1, false, maxLocGain2, samples, locA, levA, buf3); + } + + //calculate a gain modification function + int i; + int flatLen = 0; + if (winSeq.Equals(WindowSequence.LONG_STOP_SEQUENCE)) + { + flatLen = samples / 2 - maxLocGain0 - maxLocGain1; + for (i = 0; i < flatLen; i++) + { + modFunc[i] = 1.0f; + } + } + if (winSeq.Equals(WindowSequence.ONLY_LONG_SEQUENCE) || winSeq.Equals(WindowSequence.EIGHT_SHORT_SEQUENCE)) levA[0] = 1.0f; + + for (i = 0; i < maxLocGain0; i++) + { + modFunc[i + flatLen] = levA[0] * secLevel * buf1[i]; + } + for (i = 0; i < maxLocGain1; i++) + { + modFunc[i + flatLen + maxLocGain0] = levA[0] * buf2[i]; + } + + if (winSeq.Equals(WindowSequence.LONG_START_SEQUENCE)) + { + for (i = 0; i < maxLocGain2; i++) + { + modFunc[i + maxLocGain0 + maxLocGain1] = buf3[i]; + } + flatLen = samples / 2 - maxLocGain1 - maxLocGain2; + for (i = 0; i < flatLen; i++) + { + modFunc[i + maxLocGain0 + maxLocGain1 + maxLocGain2] = 1.0f; + } + } + else if (winSeq.Equals(WindowSequence.LONG_STOP_SEQUENCE)) + { + for (i = 0; i < maxLocGain2; i++) + { + modFunc[i + flatLen + maxLocGain0 + maxLocGain1] = buf3[i]; + } + } + + //calculate a gain control function + for (i = 0; i < samples; i++) + { + _function[i] = 1.0f / modFunc[i]; + } + } + + /* + * calculates a fragment modification function by interpolating the gain + * values of the gain change positions + */ + private float CalculateFMD(int bd, int wd, bool prev, int maxLocGain, int samples, int[] loc, float[] lev, float[] fmd) + { + int[] m = new int[samples / 2]; + int[] lct = prev ? _locationPrev[bd][wd] : _location[bd][wd]; + int[] lvl = prev ? _levelPrev[bd][wd] : _level[bd][wd]; + int length = lct.Length; + + int lngain; + int i; + for (i = 0; i < length; i++) + { + loc[i + 1] = 8 * lct[i]; //gainc + lngain = GetGainChangePointID(lvl[i]); //gainc + if (lngain < 0) + lev[i + 1] = 1.0f / (float)Math.Pow(2, -lngain); + else + lev[i + 1] = (float)Math.Pow(2, lngain); + } + + //set start point values + loc[0] = 0; + if (length == 0) + lev[0] = 1.0f; + else + lev[0] = lev[1]; + float secLevel = lev[0]; + + //set end point values + loc[length + 1] = maxLocGain; + lev[length + 1] = 1.0f; + + int j; + for (i = 0; i < maxLocGain; i++) + { + m[i] = 0; + for (j = 0; j <= length + 1; j++) + { + if (loc[j] <= i) m[i] = j; + } + } + + for (i = 0; i < maxLocGain; i++) + { + if (i >= loc[m[i]] && i <= loc[m[i]] + 7) + fmd[i] = InterpolateGain(lev[m[i]], lev[m[i] + 1], i - loc[m[i]]); + else + fmd[i] = lev[m[i] + 1]; + } + + return secLevel; + } + + /** + * transformes the exponent value of the gain to the id of the gain change + * point + */ + private int GetGainChangePointID(int lngain) + { + for (int i = 0; i < GCConstants.ID_GAIN; i++) + { + if (lngain == GCConstants.LN_GAIN[i]) + return i; + } + return 0; //shouldn't happen + } + + /** + * calculates a fragment modification function + * the interpolated gain value between the gain values of two gain change + * positions is calculated by the formula: + * f(a,b,j) = 2^(((8-j)log2(a)+j*log2(b))/8) + */ + private float InterpolateGain(float alev0, float alev1, int iloc) + { + float a0 = (float)(Math.Log(alev0) / Math.Log(2)); + float a1 = (float)(Math.Log(alev1) / Math.Log(2)); + return (float)Math.Pow(2.0f, ((8 - iloc) * a0 + iloc * a1) / 8); + } + } +} diff --git a/SharpJaad.AAC/Gain/IMDCT.cs b/SharpJaad.AAC/Gain/IMDCT.cs new file mode 100644 index 0000000..2bd325f --- /dev/null +++ b/SharpJaad.AAC/Gain/IMDCT.cs @@ -0,0 +1,232 @@ +using System; +using SharpJaad.AAC; +using static SharpJaad.AAC.Syntax.ICSInfo; + +namespace SharpJaad.AAC.Gain +{ + public class IMDCT + { + private static float[][] _LONG_WINDOWS = { Windows.SINE_256, Windows.KBD_256 }; + private static float[][] _SHORT_WINDOWS = { Windows.SINE_32, Windows.KBD_32 }; + private int _frameLen, _shortFrameLen, _lbLong, _lbShort, _lbMid; + + public IMDCT(int frameLen) + { + _frameLen = frameLen; + _lbLong = frameLen / GCConstants.BANDS; + _shortFrameLen = frameLen / 8; + _lbShort = _shortFrameLen / GCConstants.BANDS; + _lbMid = (_lbLong - _lbShort) / 2; + } + + public void Process(float[] input, float[] output, int winShape, int winShapePrev, WindowSequence winSeq) + { + float[] buf = new float[_frameLen]; + + int b, j, i; + if (winSeq.Equals(WindowSequence.EIGHT_SHORT_SEQUENCE)) + { + for (b = 0; b < GCConstants.BANDS; b++) + { + for (j = 0; j < 8; j++) + { + for (i = 0; i < _lbShort; i++) + { + if (b % 2 == 0) + buf[_lbLong * b + _lbShort * j + i] = input[_shortFrameLen * j + _lbShort * b + i]; + else + buf[_lbLong * b + _lbShort * j + i] = input[_shortFrameLen * j + _lbShort * b + _lbShort - 1 - i]; + } + } + } + } + else + { + for (b = 0; b < GCConstants.BANDS; b++) + { + for (i = 0; i < _lbLong; i++) + { + if (b % 2 == 0) + buf[_lbLong * b + i] = input[_lbLong * b + i]; + else + buf[_lbLong * b + i] = input[_lbLong * b + _lbLong - 1 - i]; + } + } + } + + for (b = 0; b < GCConstants.BANDS; b++) + { + Process2(buf, output, winSeq, winShape, winShapePrev, b); + } + } + + private void Process2(float[] input, float[] output, WindowSequence winSeq, int winShape, int winShapePrev, int band) + { + float[] bufIn = new float[_lbLong]; + float[] bufOut = new float[_lbLong * 2]; + float[] window = new float[_lbLong * 2]; + float[] window1 = new float[_lbShort * 2]; + float[] window2 = new float[_lbShort * 2]; + + //init windows + int i; + switch (winSeq) + { + case WindowSequence.ONLY_LONG_SEQUENCE: + for (i = 0; i < _lbLong; i++) + { + window[i] = _LONG_WINDOWS[winShapePrev][i]; + window[_lbLong * 2 - 1 - i] = _LONG_WINDOWS[winShape][i]; + } + break; + case WindowSequence.EIGHT_SHORT_SEQUENCE: + for (i = 0; i < _lbShort; i++) + { + window1[i] = _SHORT_WINDOWS[winShapePrev][i]; + window1[_lbShort * 2 - 1 - i] = _SHORT_WINDOWS[winShape][i]; + window2[i] = _SHORT_WINDOWS[winShape][i]; + window2[_lbShort * 2 - 1 - i] = _SHORT_WINDOWS[winShape][i]; + } + break; + case WindowSequence.LONG_START_SEQUENCE: + for (i = 0; i < _lbLong; i++) + { + window[i] = _LONG_WINDOWS[winShapePrev][i]; + } + for (i = 0; i < _lbMid; i++) + { + window[i + _lbLong] = 1.0f; + } + + for (i = 0; i < _lbShort; i++) + { + window[i + _lbMid + _lbLong] = _SHORT_WINDOWS[winShape][_lbShort - 1 - i]; + } + for (i = 0; i < _lbMid; i++) + { + window[i + _lbMid + _lbLong + _lbShort] = 0.0f; + } + break; + case WindowSequence.LONG_STOP_SEQUENCE: + for (i = 0; i < _lbMid; i++) + { + window[i] = 0.0f; + } + for (i = 0; i < _lbShort; i++) + { + window[i + _lbMid] = _SHORT_WINDOWS[winShapePrev][i]; + } + for (i = 0; i < _lbMid; i++) + { + window[i + _lbMid + _lbShort] = 1.0f; + } + for (i = 0; i < _lbLong; i++) + { + window[i + _lbMid + _lbShort + _lbMid] = _LONG_WINDOWS[winShape][_lbLong - 1 - i]; + } + break; + } + + int j; + if (winSeq.Equals(WindowSequence.EIGHT_SHORT_SEQUENCE)) + { + int k; + for (j = 0; j < 8; j++) + { + for (k = 0; k < _lbShort; k++) + { + bufIn[k] = input[band * _lbLong + j * _lbShort + k]; + } + if (j == 0) + Array.Copy(window1, 0, window, 0, _lbShort * 2); + else + Array.Copy(window2, 0, window, 0, _lbShort * 2); + Imdct(bufIn, bufOut, window, _lbShort); + for (k = 0; k < _lbShort * 2; k++) + { + output[band * _lbLong * 2 + j * _lbShort * 2 + k] = bufOut[k] / 32.0f; + } + } + } + else + { + for (j = 0; j < _lbLong; j++) + { + bufIn[j] = input[band * _lbLong + j]; + } + Imdct(bufIn, bufOut, window, _lbLong); + for (j = 0; j < _lbLong * 2; j++) + { + output[band * _lbLong * 2 + j] = bufOut[j] / 256.0f; + } + } + } + + private void Imdct(float[] input, float[] output, float[] window, int n) + { + int n2 = n / 2; + float[][] table, table2; + if (n == 256) + { + table = IMDCTTables.IMDCT_TABLE_256; + table2 = IMDCTTables.IMDCT_POST_TABLE_256; + } + else if (n == 32) + { + table = IMDCTTables.IMDCT_TABLE_32; + table2 = IMDCTTables.IMDCT_POST_TABLE_32; + } + else throw new AACException("gain control: unexpected IMDCT length"); + + float[] tmp = new float[n]; + int i; + for (i = 0; i < n2; ++i) + { + tmp[i] = input[2 * i]; + } + for (i = n2; i < n; ++i) + { + tmp[i] = -input[2 * n - 1 - 2 * i]; + } + + //pre-twiddle + float[][] buf = new float[n2][]; + for (i = 0; i < n2; i++) + { + buf[i] = new float[2]; + } + for (i = 0; i < n2; i++) + { + buf[i][0] = table[i][0] * tmp[2 * i] - table[i][1] * tmp[2 * i + 1]; + buf[i][1] = table[i][0] * tmp[2 * i + 1] + table[i][1] * tmp[2 * i]; + } + + //fft + FFT.Process(buf, n2); + + //post-twiddle and reordering + for (i = 0; i < n2; i++) + { + tmp[i] = table2[i][0] * buf[i][0] + table2[i][1] * buf[n2 - 1 - i][0] + + table2[i][2] * buf[i][1] + table2[i][3] * buf[n2 - 1 - i][1]; + tmp[n - 1 - i] = table2[i][2] * buf[i][0] - table2[i][3] * buf[n2 - 1 - i][0] + - table2[i][0] * buf[i][1] + table2[i][1] * buf[n2 - 1 - i][1]; + } + + //copy to output and apply window + Array.Copy(tmp, n2, output, 0, n2); + for (i = n2; i < n * 3 / 2; ++i) + { + output[i] = -tmp[n * 3 / 2 - 1 - i]; + } + for (i = n * 3 / 2; i < n * 2; ++i) + { + output[i] = -tmp[i - n * 3 / 2]; + } + for (i = 0; i < n; i++) + { + output[i] *= window[i]; + } + } + } +} diff --git a/SharpJaad.AAC/Gain/IMDCTTables.cs b/SharpJaad.AAC/Gain/IMDCTTables.cs new file mode 100644 index 0000000..a95458e --- /dev/null +++ b/SharpJaad.AAC/Gain/IMDCTTables.cs @@ -0,0 +1,304 @@ +namespace SharpJaad.AAC.Gain +{ + public static class IMDCTTables + { + //pre-twiddling tables + public static float[][] IMDCT_TABLE_256 = { + new float[] {1.0f, -0.0f}, + new float[] {0.9996988f, -0.024541229f}, + new float[] {0.99879545f, -0.049067676f}, + new float[] {0.99729043f, -0.07356457f}, + new float[] {0.9951847f, -0.09801714f}, + new float[] {0.99247956f, -0.12241068f}, + new float[] {0.9891765f, -0.14673047f}, + new float[] {0.98527765f, -0.1709619f}, + new float[] {0.98078525f, -0.19509032f}, + new float[] {0.9757021f, -0.21910124f}, + new float[] {0.97003126f, -0.2429802f}, + new float[] {0.96377605f, -0.26671278f}, + new float[] {0.95694035f, -0.29028466f}, + new float[] {0.94952816f, -0.31368175f}, + new float[] {0.94154406f, -0.33688986f}, + new float[] {0.9329928f, -0.35989505f}, + new float[] {0.9238795f, -0.38268346f}, + new float[] {0.9142097f, -0.40524134f}, + new float[] {0.9039893f, -0.42755508f}, + new float[] {0.8932243f, -0.44961134f}, + new float[] {0.88192123f, -0.47139674f}, + new float[] {0.87008697f, -0.49289823f}, + new float[] {0.8577286f, -0.51410276f}, + new float[] {0.8448536f, -0.53499764f}, + new float[] {0.8314696f, -0.55557024f}, + new float[] {0.8175848f, -0.5758082f}, + new float[] {0.8032075f, -0.5956993f}, + new float[] {0.7883464f, -0.61523163f}, + new float[] {0.77301043f, -0.63439333f}, + new float[] {0.7572088f, -0.65317285f}, + new float[] {0.7409511f, -0.671559f}, + new float[] {0.7242471f, -0.68954057f}, + new float[] {0.70710677f, -0.70710677f}, + new float[] {0.6895405f, -0.7242471f}, + new float[] {0.6715589f, -0.7409512f}, + new float[] {0.6531728f, -0.7572089f}, + new float[] {0.6343933f, -0.77301043f}, + new float[] {0.6152316f, -0.7883464f}, + new float[] {0.5956993f, -0.8032075f}, + new float[] {0.57580817f, -0.8175848f}, + new float[] {0.5555702f, -0.83146966f}, + new float[] {0.53499764f, -0.8448536f}, + new float[] {0.5141027f, -0.85772866f}, + new float[] {0.4928982f, -0.87008697f}, + new float[] {0.47139665f, -0.8819213f}, + new float[] {0.4496113f, -0.8932243f}, + new float[] {0.4275551f, -0.9039893f}, + new float[] {0.40524128f, -0.9142098f}, + new float[] {0.38268343f, -0.9238795f}, + new float[] {0.35989496f, -0.9329928f}, + new float[] {0.33688983f, -0.94154406f}, + new float[] {0.31368166f, -0.9495282f}, + new float[] {0.29028463f, -0.95694035f}, + new float[] {0.26671275f, -0.96377605f}, + new float[] {0.24298012f, -0.97003126f}, + new float[] {0.21910122f, -0.9757021f}, + new float[] {0.19509023f, -0.9807853f}, + new float[] {0.17096186f, -0.98527765f}, + new float[] {0.1467305f, -0.9891765f}, + new float[] {0.122410625f, -0.99247956f}, + new float[] {0.098017134f, -0.9951847f}, + new float[] {0.07356449f, -0.99729043f}, + new float[] {0.04906765f, -0.99879545f}, + new float[] {0.024541136f, -0.9996988f}, + new float[] {-4.371139E-8f, -1.0f}, + new float[] {-0.024541223f, -0.9996988f}, + new float[] {-0.04906774f, -0.99879545f}, + new float[] {-0.073564574f, -0.99729043f}, + new float[] {-0.09801722f, -0.9951847f}, + new float[] {-0.12241071f, -0.9924795f}, + new float[] {-0.14673057f, -0.9891765f}, + new float[] {-0.17096195f, -0.98527765f}, + new float[] {-0.19509032f, -0.98078525f}, + new float[] {-0.21910131f, -0.9757021f}, + new float[] {-0.2429802f, -0.97003126f}, + new float[] {-0.26671284f, -0.96377605f}, + new float[] {-0.29028472f, -0.9569403f}, + new float[] {-0.31368172f, -0.94952816f}, + new float[] {-0.33688992f, -0.94154406f}, + new float[] {-0.35989505f, -0.9329928f}, + new float[] {-0.38268352f, -0.9238795f}, + new float[] {-0.40524134f, -0.9142097f}, + new float[] {-0.42755508f, -0.9039893f}, + new float[] {-0.44961137f, -0.8932243f}, + new float[] {-0.47139683f, -0.88192123f}, + new float[] {-0.49289817f, -0.870087f}, + new float[] {-0.51410276f, -0.8577286f}, + new float[] {-0.5349977f, -0.8448535f}, + new float[] {-0.55557036f, -0.83146954f}, + new float[] {-0.57580817f, -0.8175848f}, + new float[] {-0.59569937f, -0.8032075f}, + new float[] {-0.6152317f, -0.78834635f}, + new float[] {-0.6343933f, -0.7730105f}, + new float[] {-0.65317285f, -0.7572088f}, + new float[] {-0.67155904f, -0.74095106f}, + new float[] {-0.6895407f, -0.724247f}, + new float[] {-0.70710677f, -0.70710677f}, + new float[] {-0.72424716f, -0.6895405f}, + new float[] {-0.74095124f, -0.67155886f}, + new float[] {-0.7572088f, -0.65317285f}, + new float[] {-0.7730105f, -0.6343933f}, + new float[] {-0.78834647f, -0.6152315f}, + new float[] {-0.80320764f, -0.59569913f}, + new float[] {-0.8175848f, -0.57580817f}, + new float[] {-0.83146966f, -0.5555702f}, + new float[] {-0.84485364f, -0.53499746f}, + new float[] {-0.8577286f, -0.51410276f}, + new float[] {-0.870087f, -0.49289814f}, + new float[] {-0.88192135f, -0.47139663f}, + new float[] {-0.8932243f, -0.44961137f}, + new float[] {-0.9039893f, -0.42755505f}, + new float[] {-0.9142098f, -0.40524122f}, + new float[] {-0.9238796f, -0.38268328f}, + new float[] {-0.9329928f, -0.35989505f}, + new float[] {-0.9415441f, -0.3368898f}, + new float[] {-0.9495282f, -0.3136816f}, + new float[] {-0.95694035f, -0.29028472f}, + new float[] {-0.96377605f, -0.26671273f}, + new float[] {-0.97003126f, -0.24298008f}, + new float[] {-0.97570217f, -0.21910107f}, + new float[] {-0.9807853f, -0.19509031f}, + new float[] {-0.98527765f, -0.17096181f}, + new float[] {-0.9891765f, -0.14673033f}, + new float[] {-0.9924795f, -0.1224107f}, + new float[] {-0.9951847f, -0.0980171f}, + new float[] {-0.9972905f, -0.07356445f}, + new float[] {-0.99879545f, -0.049067486f}, + new float[] {-0.9996988f, -0.02454121f} + }; + public static float[][] IMDCT_TABLE_32 = { + new float[] {1.0f, -0.0f}, + new float[] {0.98078525f, -0.19509032f}, + new float[] {0.9238795f, -0.38268346f}, + new float[] {0.8314696f, -0.55557024f}, + new float[] {0.70710677f, -0.70710677f}, + new float[] {0.5555702f, -0.83146966f}, + new float[] {0.38268343f, -0.9238795f}, + new float[] {0.19509023f, -0.9807853f}, + new float[] {-4.371139E-8f, -1.0f}, + new float[] {-0.19509032f, -0.98078525f}, + new float[] {-0.38268352f, -0.9238795f}, + new float[] {-0.55557036f, -0.83146954f}, + new float[] {-0.70710677f, -0.70710677f}, + new float[] {-0.83146966f, -0.5555702f}, + new float[] {-0.9238796f, -0.38268328f}, + new float[] {-0.9807853f, -0.19509031f} + }; + //post-twiddling tables + public static float[][] IMDCT_POST_TABLE_256 = { + new float[] {0.49232805f, 0.50766724f, 0.50147516f, 0.49840719f}, + new float[] {0.47697723f, 0.5229804f, 0.50407255f, 0.4948688f}, + new float[] {0.46162924f, 0.5382531f, 0.50619966f, 0.49086043f}, + new float[] {0.44629848f, 0.5534709f, 0.50785726f, 0.4863832f}, + new float[] {0.43099934f, 0.5686195f, 0.5090466f, 0.48143846f}, + new float[] {0.41574615f, 0.58368444f, 0.5097693f, 0.47602817f}, + new float[] {0.40055317f, 0.5986516f, 0.5100275f, 0.47015458f}, + new float[] {0.38543463f, 0.6135067f, 0.50982374f, 0.46382055f}, + new float[] {0.37040454f, 0.6282357f, 0.5091608f, 0.45702913f}, + new float[] {0.35547704f, 0.64282453f, 0.50804234f, 0.4497841f}, + new float[] {0.34066594f, 0.65725935f, 0.506472f, 0.44208938f}, + new float[] {0.32598507f, 0.6715264f, 0.5044541f, 0.43394947f}, + new float[] {0.31144798f, 0.6856121f, 0.5019932f, 0.42536932f}, + new float[] {0.29706824f, 0.6995029f, 0.4990945f, 0.41635424f}, + new float[] {0.2828591f, 0.7131856f, 0.49576342f, 0.40690988f}, + new float[] {0.26883373f, 0.726647f, 0.4920059f, 0.39704242f}, + new float[] {0.25500503f, 0.73987424f, 0.48782825f, 0.3867584f}, + new float[] {0.24138579f, 0.7528547f, 0.48323712f, 0.3760647f}, + new float[] {0.22798851f, 0.76557565f, 0.4782396f, 0.36496866f}, + new float[] {0.21482554f, 0.7780249f, 0.47284314f, 0.35347793f}, + new float[] {0.20190886f, 0.79019046f, 0.46705556f, 0.3416006f}, + new float[] {0.18925038f, 0.8020605f, 0.4608851f, 0.3293451f}, + new float[] {0.17686158f, 0.8136235f, 0.45434028f, 0.3167202f}, + new float[] {0.16475382f, 0.8248682f, 0.44743007f, 0.30373502f}, + new float[] {0.15293804f, 0.8357836f, 0.44016364f, 0.2903991f}, + new float[] {0.14142501f, 0.84635913f, 0.4325506f, 0.2767222f}, + new float[] {0.13022512f, 0.85658425f, 0.42460087f, 0.26271448f}, + new float[] {0.11934847f, 0.86644906f, 0.41632465f, 0.24838635f}, + new float[] {0.10880476f, 0.8759437f, 0.40773243f, 0.23374856f}, + new float[] {0.09860358f, 0.8850589f, 0.39883506f, 0.21881217f}, + new float[] {0.08875397f, 0.89378536f, 0.38964373f, 0.20358856f}, + new float[] {0.0792647f, 0.9021145f, 0.38016963f, 0.18808924f}, + new float[] {0.07014418f, 0.91003793f, 0.37042463f, 0.1723262f}, + new float[] {0.061400414f, 0.91754776f, 0.36042035f, 0.1563114f}, + new float[] {0.05304113f, 0.92463624f, 0.35016915f, 0.14005733f}, + new float[] {0.0450736f, 0.9312961f, 0.3396833f, 0.12357649f}, + new float[] {0.037504703f, 0.9375206f, 0.32897532f, 0.106881686f}, + new float[] {0.03034103f, 0.9433032f, 0.3180581f, 0.08998602f}, + new float[] {0.023588628f, 0.94863784f, 0.30694458f, 0.07290262f}, + new float[] {0.01725325f, 0.95351887f, 0.29564792f, 0.055644885f}, + new float[] {0.011340171f, 0.95794106f, 0.28418133f, 0.038226277f}, + new float[] {0.005854279f, 0.9618995f, 0.27255845f, 0.020660654f}, + new float[] {8.0010295E-4f, 0.96538985f, 0.26079288f, 0.0029617846f}, + new float[] {-0.003818363f, 0.9684081f, 0.24889828f, -0.014856413f}, + new float[] {-0.007997453f, 0.9709507f, 0.23688862f, -0.0327797f}, + new float[] {-0.011734039f, 0.9730145f, 0.22477779f, -0.050794043f}, + new float[] {-0.015025228f, 0.97459674f, 0.21258f, -0.06888495f}, + new float[] {-0.017868847f, 0.97569525f, 0.20030917f, -0.08703829f}, + new float[] {-0.020262927f, 0.9763082f, 0.1879797f, -0.10523948f}, + new float[] {-0.022206068f, 0.9764342f, 0.17560576f, -0.12347408f}, + new float[] {-0.023697197f, 0.9760722f, 0.16320162f, -0.14172764f}, + new float[] {-0.024735779f, 0.9752219f, 0.15078172f, -0.15998542f}, + new float[] {-0.025321692f, 0.97388303f, 0.13836022f, -0.17823319f}, + new float[] {-0.025455266f, 0.97205615f, 0.12595156f, -0.19645613f}, + new float[] {-0.025137246f, 0.96974206f, 0.113570005f, -0.21463984f}, + new float[] {-0.024368823f, 0.966942f, 0.10122979f, -0.23276988f}, + new float[] {-0.023151666f, 0.96365774f, 0.088945225f, -0.25083166f}, + new float[] {-0.021487802f, 0.9598913f, 0.07673041f, -0.26881093f}, + new float[] {-0.019379854f, 0.9556455f, 0.06459953f, -0.28669322f}, + new float[] {-0.016830623f, 0.95092314f, 0.0525665f, -0.3044645f}, + new float[] {-0.013843596f, 0.9457279f, 0.04064539f, -0.32211035f}, + new float[] {-0.010422587f, 0.9400635f, 0.02884984f, -0.33961698f}, + new float[] {-0.0065717697f, 0.9339343f, 0.017193556f, -0.35697052f}, + new float[] {-0.002295822f, 0.92734504f, 0.0056901723f, -0.374157f}, + new float[] {0.0024001896f, 0.92030096f, -0.0056470186f, -0.3911631f}, + new float[] {0.0075107515f, 0.91280746f, -0.016804636f, -0.40797502f}, + new float[] {0.013030022f, 0.90487075f, -0.027769819f, -0.4245798f}, + new float[] {0.018951744f, 0.896497f, -0.038529605f, -0.44096428f}, + new float[] {0.025269121f, 0.88769305f, -0.049071252f, -0.4571154f}, + new float[] {0.03197518f, 0.8784661f, -0.059382424f, -0.47302073f}, + new float[] {0.03906241f, 0.86882365f, -0.06945078f, -0.48866767f}, + new float[] {0.046523094f, 0.85877365f, -0.07926449f, -0.5040442f}, + new float[] {0.054348946f, 0.84832436f, -0.08881168f, -0.51913816f}, + new float[] {0.06253144f, 0.8374845f, -0.09808087f, -0.533938f}, + new float[] {0.07106161f, 0.82626295f, -0.107060805f, -0.5484321f}, + new float[] {0.079930276f, 0.81466925f, -0.11574057f, -0.56260943f}, + new float[] {0.0891279f, 0.8027128f, -0.124109596f, -0.57645917f}, + new float[] {0.098644555f, 0.7904038f, -0.13215744f, -0.58997077f}, + new float[] {0.10847002f, 0.7777525f, -0.13987413f, -0.6031339f}, + new float[] {0.11859363f, 0.7647697f, -0.14724979f, -0.61593866f}, + new float[] {0.12900484f, 0.75146604f, -0.15427522f, -0.6283754f}, + new float[] {0.13969228f, 0.73785305f, -0.16094121f, -0.640435f}, + new float[] {0.15064475f, 0.7239419f, -0.16723916f, -0.65210843f}, + new float[] {0.16185057f, 0.7097445f, -0.17316064f, -0.6633872f}, + new float[] {0.1732978f, 0.6952729f, -0.1786977f, -0.674263f}, + new float[] {0.18497421f, 0.6805394f, -0.18384269f, -0.684728f}, + new float[] {0.19686763f, 0.6655563f, -0.18858838f, -0.69477504f}, + new float[] {0.20896536f, 0.65033644f, -0.1929279f, -0.7043968f}, + new float[] {0.22125456f, 0.6348928f, -0.19685477f, -0.71358657f}, + new float[] {0.23372234f, 0.61923826f, -0.20036295f, -0.7223382f}, + new float[] {0.24635552f, 0.6033862f, -0.20344675f, -0.7306459f}, + new float[] {0.2591407f, 0.58735025f, -0.20610088f, -0.73850405f}, + new float[] {0.27206418f, 0.5711441f, -0.2083205f, -0.7459076f}, + new float[] {0.28511274f, 0.554781f, -0.21010125f, -0.752852f}, + new float[] {0.2982724f, 0.5382753f, -0.21143904f, -0.75933313f}, + new float[] {0.31152916f, 0.521641f, -0.21233031f, -0.765347f}, + new float[] {0.3248692f, 0.50489205f, -0.21277195f, -0.7708905f}, + new float[] {0.33827832f, 0.48804274f, -0.2127612f, -0.77596056f}, + new float[] {0.3517424f, 0.47110736f, -0.21229571f, -0.7805547f}, + new float[] {0.365247f, 0.4541005f, -0.21137378f, -0.78467095f}, + new float[] {0.37877813f, 0.43703625f, -0.20999387f, -0.78830767f}, + new float[] {0.39232132f, 0.41992924f, -0.20815507f, -0.79146373f}, + new float[] {0.40586197f, 0.40279418f, -0.20585686f, -0.79413843f}, + new float[] {0.4193862f, 0.3856451f, -0.20309913f, -0.79633147f}, + new float[] {0.43287942f, 0.36849675f, -0.19988227f, -0.798043f}, + new float[] {0.4463272f, 0.3513636f, -0.19620705f, -0.79927367f}, + new float[] {0.45971522f, 0.33426026f, -0.19207478f, -0.80002457f}, + new float[] {0.47302932f, 0.3172009f, -0.18748704f, -0.80029714f}, + new float[] {0.48625526f, 0.30019996f, -0.18244597f, -0.8000933f}, + new float[] {0.49937868f, 0.2832719f, -0.17695424f, -0.79941547f}, + new float[] {0.51238585f, 0.2664307f, -0.1710147f, -0.79826653f}, + new float[] {0.52526253f, 0.24969055f, -0.16463086f, -0.7966496f}, + new float[] {0.53799486f, 0.23306563f, -0.15780658f, -0.7945684f}, + new float[] {0.5505693f, 0.21656957f, -0.15054607f, -0.7920271f}, + new float[] {0.5629722f, 0.20021626f, -0.14285406f, -0.7890301f}, + new float[] {0.5751899f, 0.18401925f, -0.13473573f, -0.7855824f}, + new float[] {0.5872092f, 0.1679922f, -0.12619662f, -0.78168947f}, + new float[] {0.599017f, 0.15214804f, -0.117242515f, -0.77735686f}, + new float[] {0.61060053f, 0.13650006f, -0.10787988f, -0.7725909f}, + new float[] {0.62194663f, 0.121061325f, -0.09811556f, -0.7673981f}, + new float[] {0.6330432f, 0.10584408f, -0.08795637f, -0.7617854f}, + new float[] {0.64387786f, 0.09086105f, -0.07741001f, -0.7557601f}, + new float[] {0.6544384f, 0.0761244f, -0.06648436f, -0.7493299f}, + new float[] {0.6647129f, 0.061646253f, -0.055187732f, -0.74250305f}, + new float[] {0.67469f, 0.047438115f, -0.043528587f, -0.7352879f}, + new float[] {0.6843584f, 0.03351158f, -0.031515926f, -0.7276931f}, + new float[] {0.693707f, 0.01987794f, -0.019159257f, -0.71972805f}, + new float[] {0.70272505f, 0.006547779f, -0.0064679384f, -0.711402f} + }; + public static float[][] IMDCT_POST_TABLE_32 = { + new float[] {0.43864408f, 0.56105477f, 0.5085104f, 0.48396915f}, + new float[] {0.3186977f, 0.67859274f, 0.5032787f, 0.4297141f}, + new float[] {0.20833567f, 0.7841439f, 0.46999773f, 0.34758708f}, + new float[] {0.114034384f, 0.87124324f, 0.41206735f, 0.24110544f}, + new float[] {0.041238904f, 0.9344632f, 0.33435628f, 0.115255035f}, + new float[] {-0.0059630573f, 0.9697391f, 0.24290696f, -0.023805834f}, + new float[] {-0.02508533f, 0.9746135f, 0.14457026f, -0.16911149f}, + new float[] {-0.015391618f, 0.9483844f, 0.046591163f, -0.3133039f}, + new float[] {0.022061408f, 0.8921483f, -0.043828517f, -0.44906986f}, + new float[] {0.0844886f, 0.8087357f, -0.119964585f, -0.5695759f}, + new float[] {0.16754475f, 0.7025422f, -0.1759777f, -0.66887593f}, + new float[] {0.26558587f, 0.57926774f, -0.20726526f, -0.7422629f}, + new float[] {0.37201017f, 0.44557464f, -0.21074113f, -0.7865493f}, + new float[] {0.4796542f, 0.30869222f, -0.18502301f, -0.80025464f}, + new float[] {0.5812251f, 0.17598371f, -0.13051844f, -0.7836913f}, + new float[] {0.66973937f, 0.054507732f, -0.049402922f, -0.73894346f} + }; + } +} diff --git a/SharpJaad.AAC/Gain/IPQF.cs b/SharpJaad.AAC/Gain/IPQF.cs new file mode 100644 index 0000000..867ba1a --- /dev/null +++ b/SharpJaad.AAC/Gain/IPQF.cs @@ -0,0 +1,91 @@ +namespace SharpJaad.AAC.Gain +{ + public class IPQF + { + private float[] _buf; + private float[,] _tmp1, _tmp2; + + public IPQF() + { + _buf = new float[GCConstants.BANDS]; + _tmp1 = new float[GCConstants.BANDS / 2, GCConstants.NPQFTAPS / GCConstants.BANDS]; + _tmp2 = new float[GCConstants.BANDS / 2, GCConstants.NPQFTAPS / GCConstants.BANDS]; + } + + public void Process(float[][] input, int frameLen, int maxBand, float[] output) + { + int i, j; + for (i = 0; i < frameLen; i++) + { + output[i] = 0.0f; + } + + for (i = 0; i < frameLen / GCConstants.BANDS; i++) + { + for (j = 0; j < GCConstants.BANDS; j++) + { + _buf[j] = input[j][i]; + } + PerformSynthesis(_buf, output, i * GCConstants.BANDS); + } + } + + private void PerformSynthesis(float[] input, float[] output, int outOff) + { + int kk = GCConstants.NPQFTAPS / (2 * GCConstants.BANDS); + int i, n, k; + float acc; + + for (n = 0; n < GCConstants.BANDS / 2; ++n) + { + for (k = 0; k < 2 * kk - 1; ++k) + { + _tmp1[n, k] = _tmp1[n, k + 1]; + _tmp2[n, k] = _tmp2[n, k + 1]; + } + } + + for (n = 0; n < GCConstants.BANDS / 2; ++n) + { + acc = 0.0f; + for (i = 0; i < GCConstants.BANDS; ++i) + { + acc += PQFTables.COEFS_Q0[n][i] * input[i]; + } + _tmp1[n, 2 * kk - 1] = acc; + + acc = 0.0f; + for (i = 0; i < GCConstants.BANDS; ++i) + { + acc += PQFTables.COEFS_Q1[n][i] * input[i]; + } + _tmp2[n, 2 * kk - 1] = acc; + } + + for (n = 0; n < GCConstants.BANDS / 2; ++n) + { + acc = 0.0f; + for (k = 0; k < kk; ++k) + { + acc += PQFTables.COEFS_T0[n][k] * _tmp1[n, 2 * kk - 1 - 2 * k]; + } + for (k = 0; k < kk; ++k) + { + acc += PQFTables.COEFS_T1[n][k] * _tmp2[n, 2 * kk - 2 - 2 * k]; + } + output[outOff + n] = acc; + + acc = 0.0f; + for (k = 0; k < kk; ++k) + { + acc += PQFTables.COEFS_T0[GCConstants.BANDS - 1 - n][k] * _tmp1[n, 2 * kk - 1 - 2 * k]; + } + for (k = 0; k < kk; ++k) + { + acc -= PQFTables.COEFS_T1[GCConstants.BANDS - 1 - n][k] * _tmp2[n, 2 * kk - 2 - 2 * k]; + } + output[outOff + GCConstants.BANDS - 1 - n] = acc; + } + } + } +} diff --git a/SharpJaad.AAC/Gain/PQFTables.cs b/SharpJaad.AAC/Gain/PQFTables.cs new file mode 100644 index 0000000..b9b1fe5 --- /dev/null +++ b/SharpJaad.AAC/Gain/PQFTables.cs @@ -0,0 +1,128 @@ +namespace SharpJaad.AAC.Gain +{ + public static class PQFTables + { + public static float[] PROTO_TABLE = { + 1.2206911E-5f, + 1.7261988E-5f, + 1.2300094E-5f, + -1.0833943E-5f, + -5.77725E-5f, + -1.2764768E-4f, + -2.0965187E-4f, + -2.8166673E-4f, + -3.123486E-4f, + -2.673852E-4f, + -1.19494245E-4f, + 1.396514E-4f, + 4.886414E-4f, + 8.7044627E-4f, + 0.001194943f, + 0.0013519708f, + 0.0012346314f, + 7.695321E-4f, + -5.2242434E-5f, + -0.0011516092f, + -0.002353847f, + -0.0034033123f, + -0.004002855f, + -0.0038745415f, + -0.0028321072f, + -8.503889E-4f, + 0.0018856751f, + 0.004968874f, + 0.0078056706f, + 0.0097027905f, + 0.009996043f, + 0.008201936f, + 0.0041642073f, + -0.0018364454f, + -0.0090384865f, + -0.016241528f, + -0.021939551f, + -0.02453318f, + -0.022591664f, + -0.015122066f, + -0.0017971713f, + 0.016903413f, + 0.039672315f, + 0.064487524f, + 0.08885003f, + 0.11011329f, + 0.12585402f, + 0.13422394f, + 0.13422394f, + 0.12585402f, + 0.11011329f, + 0.08885003f, + 0.064487524f, + 0.039672315f, + 0.016903413f, + -0.0017971713f, + -0.015122066f, + -0.022591664f, + -0.02453318f, + -0.021939551f, + -0.016241528f, + -0.0090384865f, + -0.0018364454f, + 0.0041642073f, + 0.008201936f, + 0.009996043f, + 0.0097027905f, + 0.0078056706f, + 0.004968874f, + 0.0018856751f, + -8.503889E-4f, + -0.0028321072f, + -0.0038745415f, + -0.004002855f, + -0.0034033123f, + -0.002353847f, + -0.0011516092f, + -5.2242434E-5f, + 7.695321E-4f, + 0.0012346314f, + 0.0013519708f, + 0.001194943f, + 8.7044627E-4f, + 4.886414E-4f, + 1.396514E-4f, + -1.19494245E-4f, + -2.673852E-4f, + -3.123486E-4f, + -2.8166673E-4f, + -2.0965187E-4f, + -1.2764768E-4f, + -5.77725E-5f, + -1.0833943E-5f, + 1.2300094E-5f, + 1.7261988E-5f, + 1.2206911E-5f + }; + public static float[][] COEFS_Q0 = { + new float[] {1.6629392f, -0.39018065f, -1.9615706f, -1.11114f}, + new float[] {1.9615705f, 1.6629392f, 1.1111404f, 0.39018047f}, + new float[] {1.9615705f, 1.6629392f, 1.1111404f, 0.39018047f}, + new float[] {1.6629392f, -0.39018065f, -1.9615706f, -1.11114f} + }; + public static float[][] COEFS_Q1 = { + new float[] {1.1111404f, -1.9615706f, 0.39018083f, 1.6629387f}, + new float[] {0.39018047f, -1.11114f, 1.6629387f, -1.9615704f}, + new float[] {-0.39018065f, 1.1111408f, -1.6629395f, 1.9615709f}, + new float[] {-1.1111407f, 1.9615705f, -0.39018044f, -1.6629392f} + }; + public static float[][] COEFS_T0 = { + new float[] {4.8827646E-5f, 0.0012493944f, 0.0049385256f, 0.011328429f, 0.016656829f, 0.0071886852f, 0.53689575f, 0.060488265f, 0.032807745f, 0.015498166f, 0.0054078833f, 0.0011266669f}, + new float[] {6.904795E-5f, 0.0010695409f, 0.0030781284f, 0.0034015556f, -0.0073457817f, -0.067613654f, 0.50341606f, 0.090366654f, 0.03998417f, 0.01601142f, 0.004779772f, 8.386075E-4f}, + new float[] {4.9200375E-5f, 4.7797698E-4f, -2.0896974E-4f, -0.0075427005f, -0.036153946f, -0.15868926f, 0.44045317f, 0.09813272f, 0.038811162f, 0.013613249f, 0.003481785f, 5.1059073E-4f}, + new float[] {-4.333577E-5f, -5.586056E-4f, -0.004606437f, -0.019875497f, -0.06496611f, -0.2579501f, 0.35540012f, 0.087758206f, 0.031222682f, 0.009415388f, 0.0019545655f, 2.3109E-4f} + }; + public static float[][] COEFS_T1 = { + new float[] {-2.3109E-4f, -0.0019545655f, -0.009415388f, -0.031222682f, -0.087758206f, -0.35540012f, 0.2579501f, 0.06496611f, 0.019875497f, 0.004606437f, 5.586056E-4f, 4.333577E-5f}, + new float[] {-5.1059073E-4f, -0.003481785f, -0.013613249f, -0.038811162f, -0.09813272f, -0.44045317f, 0.15868926f, 0.036153946f, 0.0075427005f, 2.0896974E-4f, -4.7797698E-4f, -4.9200375E-5f}, + new float[] {-8.386075E-4f, -0.004779772f, -0.01601142f, -0.03998417f, -0.090366654f, -0.50341606f, 0.067613654f, 0.0073457817f, -0.0034015556f, -0.0030781284f, -0.0010695409f, -6.904795E-5f}, + new float[] {-0.0011266669f, -0.0054078833f, -0.015498166f, -0.032807745f, -0.060488265f, -0.53689575f, -0.0071886852f, -0.016656829f, -0.011328429f, -0.0049385256f, -0.0012493944f, -4.8827646E-5f} + }; + } +} diff --git a/SharpJaad.AAC/Gain/Windows.cs b/SharpJaad.AAC/Gain/Windows.cs new file mode 100644 index 0000000..0a0073b --- /dev/null +++ b/SharpJaad.AAC/Gain/Windows.cs @@ -0,0 +1,590 @@ +namespace SharpJaad.AAC.Gain +{ + public static class Windows + { + public static float[] SINE_256 = { + 0.003067956762965976f, + 0.00920375478205982f, + 0.0153392062849881f, + 0.021474080275469508f, + 0.02760814577896574f, + 0.03374117185137758f, + 0.03987292758773981f, + 0.04600318213091462f, + 0.052131704680283324f, + 0.05825826450043575f, + 0.06438263092985747f, + 0.07050457338961386f, + 0.07662386139203149f, + 0.08274026454937569f, + 0.0888535525825246f, + 0.09496349532963899f, + 0.10106986275482782f, + 0.10717242495680884f, + 0.11327095217756435f, + 0.11936521481099135f, + 0.12545498341154623f, + 0.13154002870288312f, + 0.13762012158648604f, + 0.14369503315029447f, + 0.1497645346773215f, + 0.15582839765426523f, + 0.16188639378011183f, + 0.16793829497473117f, + 0.17398387338746382f, + 0.18002290140569951f, + 0.18605515166344663f, + 0.19208039704989244f, + 0.19809841071795356f, + 0.20410896609281687f, + 0.2101118368804696f, + 0.21610679707621952f, + 0.2220936209732035f, + 0.22807208317088573f, + 0.23404195858354343f, + 0.2400030224487415f, + 0.2459550503357946f, + 0.25189781815421697f, + 0.257831102162159f, + 0.26375467897483135f, + 0.2696683255729151f, + 0.27557181931095814f, + 0.28146493792575794f, + 0.2873474595447295f, + 0.29321916269425863f, + 0.2990798263080405f, + 0.3049292297354024f, + 0.3107671527496115f, + 0.31659337555616585f, + 0.32240767880106985f, + 0.3282098435790925f, + 0.3339996514420094f, + 0.33977688440682685f, + 0.3455413249639891f, + 0.3512927560855671f, + 0.35703096123343f, + 0.3627557243673972f, + 0.3684668299533723f, + 0.37416406297145793f, + 0.37984720892405116f, + 0.38551605384391885f, + 0.39117038430225387f, + 0.3968099874167103f, + 0.40243465085941843f, + 0.4080441628649787f, + 0.4136383122384345f, + 0.4192168883632239f, + 0.4247796812091088f, + 0.4303264813400826f, + 0.4358570799222555f, + 0.44137126873171667f, + 0.44686884016237416f, + 0.4523495872337709f, + 0.4578133035988772f, + 0.46325978355186015f, + 0.4686888220358279f, + 0.47410021465054997f, + 0.479493757660153f, + 0.48486924800079106f, + 0.49022648328829116f, + 0.49556526182577254f, + 0.5008853826112407f, + 0.5061866453451552f, + 0.5114688504379703f, + 0.5167317990176499f, + 0.5219752929371544f, + 0.5271991347819013f, + 0.5324031278771979f, + 0.5375870762956454f, + 0.5427507848645159f, + 0.5478940591731002f, + 0.5530167055800275f, + 0.5581185312205561f, + 0.5631993440138341f, + 0.5682589526701315f, + 0.5732971666980422f, + 0.5783137964116556f, + 0.5833086529376983f, + 0.5882815482226452f, + 0.5932322950397998f, + 0.5981607069963423f, + 0.6030665985403482f, + 0.6079497849677736f, + 0.6128100824294097f, + 0.6176473079378039f, + 0.62246127937415f, + 0.6272518154951441f, + 0.6320187359398091f, + 0.6367618612362842f, + 0.6414810128085832f, + 0.6461760129833163f, + 0.6508466849963809f, + 0.6554928529996153f, + 0.6601143420674205f, + 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0.9989412931868569f, + 0.9992047586183639f, + 0.9994306045554617f, + 0.9996188224951786f, + 0.9997694053512153f, + 0.9998823474542126f, + 0.9999576445519639f, + 0.9999952938095762f + }; + public static float[] SINE_32 = { + 0.024541228522912288f, + 0.07356456359966743f, + 0.1224106751992162f, + 0.17096188876030122f, + 0.2191012401568698f, + 0.26671275747489837f, + 0.3136817403988915f, + 0.3598950365349881f, + 0.40524131400498986f, + 0.44961132965460654f, + 0.49289819222978404f, + 0.5349976198870972f, + 0.5758081914178453f, + 0.6152315905806268f, + 0.6531728429537768f, + 0.6895405447370668f, + 0.7242470829514669f, + 0.7572088465064846f, + 0.7883464276266062f, + 0.8175848131515837f, + 0.844853565249707f, + 0.8700869911087113f, + 0.8932243011955153f, + 0.9142097557035307f, + 0.9329927988347388f, + 0.9495281805930367f, + 0.9637760657954398f, + 0.9757021300385286f, + 0.9852776423889412f, + 0.99247953459871f, + 0.9972904566786902f, + 0.9996988186962042f + }; + public static float[] KBD_256 = { + 0.0005851230124487f, + 0.0009642149851497f, + 0.0013558207534965f, + 0.0017771849644394f, + 0.0022352533849672f, + 0.0027342299070304f, + 0.0032773001022195f, + 0.0038671998069216f, + 0.0045064443384152f, + 0.0051974336885144f, + 0.0059425050016407f, + 0.0067439602523141f, + 0.0076040812644888f, + 0.0085251378135895f, + 0.0095093917383048f, + 0.0105590986429280f, + 0.0116765080854300f, + 0.0128638627792770f, + 0.0141233971318631f, + 0.0154573353235409f, + 0.0168678890600951f, + 0.0183572550877256f, + 0.0199276125319803f, + 0.0215811201042484f, + 0.0233199132076965f, + 0.0251461009666641f, + 0.0270617631981826f, + 0.0290689473405856f, + 0.0311696653515848f, + 0.0333658905863535f, + 0.0356595546648444f, + 0.0380525443366107f, + 0.0405466983507029f, + 0.0431438043376910f, + 0.0458455957104702f, + 0.0486537485902075f, + 0.0515698787635492f, + 0.0545955386770205f, + 0.0577322144743916f, + 0.0609813230826460f, + 0.0643442093520723f, + 0.0678221432558827f, + 0.0714163171546603f, + 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0.9979277642809907f, + 0.9981389072844972f, + 0.9983321047686901f, + 0.9985085513687731f, + 0.9986693885387259f, + 0.9988157050968516f, + 0.9989485378906924f, + 0.9990688725744943f, + 0.9991776444921379f, + 0.9992757396582338f, + 0.9993639958299003f, + 0.9994432036616085f, + 0.9995141079353859f, + 0.9995774088586188f, + 0.9996337634216871f, + 0.9996837868076957f, + 0.9997280538466377f, + 0.9997671005064359f, + 0.9998014254134544f, + 0.9998314913952471f, + 0.9998577270385304f, + 0.9998805282555989f, + 0.9999002598526793f, + 0.9999172570940037f, + 0.9999318272557038f, + 0.9999442511639580f, + 0.9999547847121726f, + 0.9999636603523446f, + 0.9999710885561258f, + 0.9999772592414866f, + 0.9999823431612708f, + 0.9999864932503106f, + 0.9999898459281599f, + 0.9999925223548691f, + 0.9999946296375997f, + 0.9999962619864214f, + 0.9999975018180320f, + 0.9999984208055542f, + 0.9999990808746198f, + 0.9999995351446231f, + 0.9999998288155155f + }; + public static float[] KBD_32 = { + 0.0000875914060105f, + 0.0009321760265333f, + 0.0032114611466596f, + 0.0081009893216786f, + 0.0171240286619181f, + 0.0320720743527833f, + 0.0548307856028528f, + 0.0871361822564870f, + 0.1302923415174603f, + 0.1848955425508276f, + 0.2506163195331889f, + 0.3260874142923209f, + 0.4089316830907141f, + 0.4959414909423747f, + 0.5833939894958904f, + 0.6674601983218376f, + 0.7446454751465113f, + 0.8121892962974020f, + 0.8683559394406505f, + 0.9125649996381605f, + 0.9453396205809574f, + 0.9680864942677585f, + 0.9827581789763112f, + 0.9914756203467121f, + 0.9961964092194694f, + 0.9984956609571091f, + 0.9994855586984285f, + 0.9998533730714648f, + 0.9999671864476404f, + 0.9999948432453556f, + 0.9999995655238333f, + 0.9999999961638728f + }; + } +} diff --git a/SharpJaad.AAC/Huffman/Codebooks.cs b/SharpJaad.AAC/Huffman/Codebooks.cs new file mode 100644 index 0000000..fadb933 --- /dev/null +++ b/SharpJaad.AAC/Huffman/Codebooks.cs @@ -0,0 +1,1393 @@ +namespace SharpJaad.AAC.Huffman +{ + public static class Codebooks + { + public static int[][] HCB1 = { + new int[] {1, 0, 0, 0, 0, 0}, + new int[] {5, 16, 1, 0, 0, 0}, + new int[] {5, 17, -1, 0, 0, 0}, + new int[] {5, 18, 0, 0, 0, -1}, + new int[] {5, 19, 0, 1, 0, 0}, + new int[] {5, 20, 0, 0, 0, 1}, + new int[] {5, 21, 0, 0, -1, 0}, + new int[] {5, 22, 0, 0, 1, 0}, + new int[] {5, 23, 0, -1, 0, 0}, + new int[] {7, 96, 1, -1, 0, 0}, + new int[] {7, 97, -1, 1, 0, 0}, + new int[] {7, 98, 0, 0, -1, 1}, + new int[] {7, 99, 0, 1, -1, 0}, + new int[] {7, 100, 0, -1, 1, 0}, + new int[] {7, 101, 0, 0, 1, -1}, + new int[] {7, 102, 1, 1, 0, 0}, + new int[] {7, 103, 0, 0, -1, -1}, + new int[] {7, 104, -1, -1, 0, 0}, + new int[] {7, 105, 0, -1, -1, 0}, + new int[] {7, 106, 1, 0, -1, 0}, + new int[] {7, 107, 0, 1, 0, -1}, + new int[] {7, 108, -1, 0, 1, 0}, + new int[] {7, 109, 0, 0, 1, 1}, + new int[] {7, 110, 1, 0, 1, 0}, + new int[] {7, 111, 0, -1, 0, 1}, + new int[] {7, 112, 0, 1, 1, 0}, + new int[] {7, 113, 0, 1, 0, 1}, + new int[] {7, 114, -1, 0, -1, 0}, + new int[] {7, 115, 1, 0, 0, 1}, + new int[] {7, 116, -1, 0, 0, -1}, + new int[] {7, 117, 1, 0, 0, -1}, + new int[] {7, 118, -1, 0, 0, 1}, + new int[] {7, 119, 0, -1, 0, -1}, + new int[] {9, 480, 1, 1, -1, 0}, + new int[] {9, 481, -1, 1, -1, 0}, + new int[] {9, 482, 1, -1, 1, 0}, + new int[] {9, 483, 0, 1, 1, -1}, + new int[] {9, 484, 0, 1, -1, 1}, + new int[] {9, 485, 0, -1, 1, 1}, + new int[] {9, 486, 0, -1, 1, -1}, + new int[] {9, 487, 1, -1, -1, 0}, + new int[] {9, 488, 1, 0, -1, 1}, + new int[] {9, 489, 0, 1, -1, -1}, + new int[] {9, 490, -1, 1, 1, 0}, + new int[] {9, 491, -1, 0, 1, -1}, + new int[] {9, 492, -1, -1, 1, 0}, + new int[] {9, 493, 0, -1, -1, 1}, + new int[] {9, 494, 1, -1, 0, 1}, + new int[] {9, 495, 1, -1, 0, -1}, + new int[] {9, 496, -1, 1, 0, -1}, + new int[] {9, 497, -1, -1, -1, 0}, + new int[] {9, 498, 0, -1, -1, -1}, + new int[] {9, 499, 0, 1, 1, 1}, + new int[] {9, 500, 1, 0, 1, -1}, + new int[] {9, 501, 1, 1, 0, 1}, + new int[] {9, 502, -1, 1, 0, 1}, + new int[] {9, 503, 1, 1, 1, 0}, + new int[] {10, 1008, -1, -1, 0, 1}, + new int[] {10, 1009, -1, 0, -1, -1}, + new int[] {10, 1010, 1, 1, 0, -1}, + new int[] {10, 1011, 1, 0, -1, -1}, + new int[] {10, 1012, -1, 0, -1, 1}, + new int[] {10, 1013, -1, -1, 0, -1}, + new int[] {10, 1014, -1, 0, 1, 1}, + new int[] {10, 1015, 1, 0, 1, 1}, + new int[] {11, 2032, 1, -1, 1, -1}, + new int[] {11, 2033, -1, 1, -1, 1}, + new int[] {11, 2034, -1, 1, 1, -1}, + new int[] {11, 2035, 1, -1, -1, 1}, + new int[] {11, 2036, 1, 1, 1, 1}, + new int[] {11, 2037, -1, -1, 1, 1}, + new int[] {11, 2038, 1, 1, -1, -1}, + new int[] {11, 2039, -1, -1, 1, -1}, + new int[] {11, 2040, -1, -1, -1, -1}, + new int[] {11, 2041, 1, 1, -1, 1}, + new int[] {11, 2042, 1, -1, 1, 1}, + new int[] {11, 2043, -1, 1, 1, 1}, + new int[] {11, 2044, -1, 1, -1, -1}, + new int[] {11, 2045, -1, -1, -1, 1}, + new int[] {11, 2046, 1, -1, -1, -1}, + new int[] {11, 2047, 1, 1, 1, -1} + }; + public static int[][] HCB2 = { + new int[] {3, 0, 0, 0, 0, 0}, + new int[] {4, 2, 1, 0, 0, 0}, + new int[] {5, 6, -1, 0, 0, 0}, + new int[] {5, 7, 0, 0, 0, 1}, + new int[] {5, 8, 0, 0, -1, 0}, + new int[] {5, 9, 0, 0, 0, -1}, + new int[] {5, 10, 0, -1, 0, 0}, + new int[] {5, 11, 0, 0, 1, 0}, + new int[] {5, 12, 0, 1, 0, 0}, + new int[] {6, 26, 0, -1, 1, 0}, + new int[] {6, 27, -1, 1, 0, 0}, + new int[] {6, 28, 0, 1, -1, 0}, + new int[] {6, 29, 0, 0, 1, -1}, + new int[] {6, 30, 0, 1, 0, -1}, + new int[] {6, 31, 0, 0, -1, 1}, + new int[] {6, 32, -1, 0, 0, -1}, + new int[] {6, 33, 1, -1, 0, 0}, + new int[] {6, 34, 1, 0, -1, 0}, + new int[] {6, 35, -1, -1, 0, 0}, + new int[] {6, 36, 0, 0, -1, -1}, + new int[] {6, 37, 1, 0, 1, 0}, + new int[] {6, 38, 1, 0, 0, 1}, + new int[] {6, 39, 0, -1, 0, 1}, + new int[] {6, 40, -1, 0, 1, 0}, + new int[] {6, 41, 0, 1, 0, 1}, + new int[] {6, 42, 0, -1, -1, 0}, + new int[] {6, 43, -1, 0, 0, 1}, + new int[] {6, 44, 0, -1, 0, -1}, + new int[] {6, 45, -1, 0, -1, 0}, + new int[] {6, 46, 1, 1, 0, 0}, + new int[] {6, 47, 0, 1, 1, 0}, + new int[] {6, 48, 0, 0, 1, 1}, + new int[] {6, 49, 1, 0, 0, -1}, + new int[] {7, 100, 0, 1, -1, 1}, + new int[] {7, 101, 1, 0, -1, 1}, + new int[] {7, 102, -1, 1, -1, 0}, + new int[] {7, 103, 0, -1, 1, -1}, + new int[] {7, 104, 1, -1, 1, 0}, + new int[] {7, 105, 1, 1, 0, -1}, + new int[] {7, 106, 1, 0, 1, 1}, + new int[] {7, 107, -1, 1, 1, 0}, + new int[] {7, 108, 0, -1, -1, 1}, + new int[] {7, 109, 1, 1, 1, 0}, + new int[] {7, 110, -1, 0, 1, -1}, + new int[] {7, 111, -1, -1, -1, 0}, + new int[] {7, 112, -1, 0, -1, 1}, + new int[] {7, 113, 1, -1, -1, 0}, + new int[] {7, 114, 1, 1, -1, 0}, + new int[] {8, 230, 1, -1, 0, 1}, + new int[] {8, 231, -1, 1, 0, -1}, + new int[] {8, 232, -1, -1, 1, 0}, + new int[] {8, 233, -1, 0, 1, 1}, + new int[] {8, 234, -1, -1, 0, 1}, + new int[] {8, 235, -1, -1, 0, -1}, + new int[] {8, 236, 0, -1, -1, -1}, + new int[] {8, 237, 1, 0, 1, -1}, + new int[] {8, 238, 1, 0, -1, -1}, + new int[] {8, 239, 0, 1, -1, -1}, + new int[] {8, 240, 0, 1, 1, 1}, + new int[] {8, 241, -1, 1, 0, 1}, + new int[] {8, 242, -1, 0, -1, -1}, + new int[] {8, 243, 0, 1, 1, -1}, + new int[] {8, 244, 1, -1, 0, -1}, + new int[] {8, 245, 0, -1, 1, 1}, + new int[] {8, 246, 1, 1, 0, 1}, + new int[] {8, 247, 1, -1, 1, -1}, + new int[] {8, 248, -1, 1, -1, 1}, + new int[] {9, 498, 1, -1, -1, 1}, + new int[] {9, 499, -1, -1, -1, -1}, + new int[] {9, 500, -1, 1, 1, -1}, + new int[] {9, 501, -1, 1, 1, 1}, + new int[] {9, 502, 1, 1, 1, 1}, + new int[] {9, 503, -1, -1, 1, -1}, + new int[] {9, 504, 1, -1, 1, 1}, + new int[] {9, 505, -1, 1, -1, -1}, + new int[] {9, 506, -1, -1, 1, 1}, + new int[] {9, 507, 1, 1, -1, -1}, + new int[] {9, 508, 1, -1, -1, -1}, + new int[] {9, 509, -1, -1, -1, 1}, + new int[] {9, 510, 1, 1, -1, 1}, + new int[] {9, 511, 1, 1, 1, -1} + }; + public static int[][] HCB3 = { + new int[] {1, 0, 0, 0, 0, 0}, + new int[] {4, 8, 1, 0, 0, 0}, + new int[] {4, 9, 0, 0, 0, 1}, + new int[] {4, 10, 0, 1, 0, 0}, + new int[] {4, 11, 0, 0, 1, 0}, + new int[] {5, 24, 1, 1, 0, 0}, + new int[] {5, 25, 0, 0, 1, 1}, + new int[] {6, 52, 0, 1, 1, 0}, + new int[] {6, 53, 0, 1, 0, 1}, + new int[] {6, 54, 1, 0, 1, 0}, + new int[] {6, 55, 0, 1, 1, 1}, + new int[] {6, 56, 1, 0, 0, 1}, + new int[] {6, 57, 1, 1, 1, 0}, + new int[] {7, 116, 1, 1, 1, 1}, + new int[] {7, 117, 1, 0, 1, 1}, + new int[] {7, 118, 1, 1, 0, 1}, + new int[] {8, 238, 2, 0, 0, 0}, + new int[] {8, 239, 0, 0, 0, 2}, + new int[] {8, 240, 0, 0, 1, 2}, + new int[] {8, 241, 2, 1, 0, 0}, + new int[] {8, 242, 1, 2, 1, 0}, + new int[] {9, 486, 0, 0, 2, 1}, + new int[] {9, 487, 0, 1, 2, 1}, + new int[] {9, 488, 1, 2, 0, 0}, + new int[] {9, 489, 0, 1, 1, 2}, + new int[] {9, 490, 2, 1, 1, 0}, + new int[] {9, 491, 0, 0, 2, 0}, + new int[] {9, 492, 0, 2, 1, 0}, + new int[] {9, 493, 0, 1, 2, 0}, + new int[] {9, 494, 0, 2, 0, 0}, + new int[] {9, 495, 0, 1, 0, 2}, + new int[] {9, 496, 2, 0, 1, 0}, + new int[] {9, 497, 1, 2, 1, 1}, + new int[] {9, 498, 0, 2, 1, 1}, + new int[] {9, 499, 1, 1, 2, 0}, + new int[] {9, 500, 1, 1, 2, 1}, + new int[] {10, 1002, 1, 2, 0, 1}, + new int[] {10, 1003, 1, 0, 2, 0}, + new int[] {10, 1004, 1, 0, 2, 1}, + new int[] {10, 1005, 0, 2, 0, 1}, + new int[] {10, 1006, 2, 1, 1, 1}, + new int[] {10, 1007, 1, 1, 1, 2}, + new int[] {10, 1008, 2, 1, 0, 1}, + new int[] {10, 1009, 1, 0, 1, 2}, + new int[] {10, 1010, 0, 0, 2, 2}, + new int[] {10, 1011, 0, 1, 2, 2}, + new int[] {10, 1012, 2, 2, 1, 0}, + new int[] {10, 1013, 1, 2, 2, 0}, + new int[] {10, 1014, 1, 0, 0, 2}, + new int[] {10, 1015, 2, 0, 0, 1}, + new int[] {10, 1016, 0, 2, 2, 1}, + new int[] {11, 2034, 2, 2, 0, 0}, + new int[] {11, 2035, 1, 2, 2, 1}, + new int[] {11, 2036, 1, 1, 0, 2}, + new int[] {11, 2037, 2, 0, 1, 1}, + new int[] {11, 2038, 1, 1, 2, 2}, + new int[] {11, 2039, 2, 2, 1, 1}, + new int[] {11, 2040, 0, 2, 2, 0}, + new int[] {11, 2041, 0, 2, 1, 2}, + new int[] {12, 4084, 1, 0, 2, 2}, + new int[] {12, 4085, 2, 2, 0, 1}, + new int[] {12, 4086, 2, 1, 2, 0}, + new int[] {12, 4087, 2, 2, 2, 0}, + new int[] {12, 4088, 0, 2, 2, 2}, + new int[] {12, 4089, 2, 2, 2, 1}, + new int[] {12, 4090, 2, 1, 2, 1}, + new int[] {12, 4091, 1, 2, 1, 2}, + new int[] {12, 4092, 1, 2, 2, 2}, + new int[] {13, 8186, 0, 2, 0, 2}, + new int[] {13, 8187, 2, 0, 2, 0}, + new int[] {13, 8188, 1, 2, 0, 2}, + new int[] {14, 16378, 2, 0, 2, 1}, + new int[] {14, 16379, 2, 1, 1, 2}, + new int[] {14, 16380, 2, 1, 0, 2}, + new int[] {15, 32762, 2, 2, 2, 2}, + new int[] {15, 32763, 2, 2, 1, 2}, + new int[] {15, 32764, 2, 1, 2, 2}, + new int[] {15, 32765, 2, 0, 1, 2}, + new int[] {15, 32766, 2, 0, 0, 2}, + new int[] {16, 65534, 2, 2, 0, 2}, + new int[] {16, 65535, 2, 0, 2, 2} + }; + public static int[][] HCB4 = { + new int[] {4, 0, 1, 1, 1, 1}, + new int[] {4, 1, 0, 1, 1, 1}, + new int[] {4, 2, 1, 1, 0, 1}, + new int[] {4, 3, 1, 1, 1, 0}, + new int[] {4, 4, 1, 0, 1, 1}, + new int[] {4, 5, 1, 0, 0, 0}, + new int[] {4, 6, 1, 1, 0, 0}, + new int[] {4, 7, 0, 0, 0, 0}, + new int[] {4, 8, 0, 0, 1, 1}, + new int[] {4, 9, 1, 0, 1, 0}, + new int[] {5, 20, 1, 0, 0, 1}, + new int[] {5, 21, 0, 1, 1, 0}, + new int[] {5, 22, 0, 0, 0, 1}, + new int[] {5, 23, 0, 1, 0, 1}, + new int[] {5, 24, 0, 0, 1, 0}, + new int[] {5, 25, 0, 1, 0, 0}, + new int[] {7, 104, 2, 1, 1, 1}, + new int[] {7, 105, 1, 1, 2, 1}, + new int[] {7, 106, 1, 2, 1, 1}, + new int[] {7, 107, 1, 1, 1, 2}, + new int[] {7, 108, 2, 1, 1, 0}, + new int[] {7, 109, 2, 1, 0, 1}, + new int[] {7, 110, 1, 2, 1, 0}, + new int[] {7, 111, 2, 0, 1, 1}, + new int[] {7, 112, 0, 1, 2, 1}, + new int[] {8, 226, 0, 1, 1, 2}, + new int[] {8, 227, 1, 1, 2, 0}, + new int[] {8, 228, 0, 2, 1, 1}, + new int[] {8, 229, 1, 0, 1, 2}, + new int[] {8, 230, 1, 2, 0, 1}, + new int[] {8, 231, 1, 1, 0, 2}, + new int[] {8, 232, 1, 0, 2, 1}, + new int[] {8, 233, 2, 1, 0, 0}, + new int[] {8, 234, 2, 0, 1, 0}, + new int[] {8, 235, 1, 2, 0, 0}, + new int[] {8, 236, 2, 0, 0, 1}, + new int[] {8, 237, 0, 1, 0, 2}, + new int[] {8, 238, 0, 2, 1, 0}, + new int[] {8, 239, 0, 0, 1, 2}, + new int[] {8, 240, 0, 1, 2, 0}, + new int[] {8, 241, 0, 2, 0, 1}, + new int[] {8, 242, 1, 0, 0, 2}, + new int[] {8, 243, 0, 0, 2, 1}, + new int[] {8, 244, 1, 0, 2, 0}, + new int[] {8, 245, 2, 0, 0, 0}, + new int[] {8, 246, 0, 0, 0, 2}, + new int[] {9, 494, 0, 2, 0, 0}, + new int[] {9, 495, 0, 0, 2, 0}, + new int[] {9, 496, 1, 2, 2, 1}, + new int[] {9, 497, 2, 2, 1, 1}, + new int[] {9, 498, 2, 1, 2, 1}, + new int[] {9, 499, 1, 1, 2, 2}, + new int[] {9, 500, 1, 2, 1, 2}, + new int[] {9, 501, 2, 1, 1, 2}, + new int[] {10, 1004, 1, 2, 2, 0}, + new int[] {10, 1005, 2, 2, 1, 0}, + new int[] {10, 1006, 2, 1, 2, 0}, + new int[] {10, 1007, 0, 2, 2, 1}, + new int[] {10, 1008, 0, 1, 2, 2}, + new int[] {10, 1009, 2, 2, 0, 1}, + new int[] {10, 1010, 0, 2, 1, 2}, + new int[] {10, 1011, 2, 0, 2, 1}, + new int[] {10, 1012, 1, 0, 2, 2}, + new int[] {10, 1013, 2, 2, 2, 1}, + new int[] {10, 1014, 1, 2, 0, 2}, + new int[] {10, 1015, 2, 0, 1, 2}, + new int[] {10, 1016, 2, 1, 0, 2}, + new int[] {10, 1017, 1, 2, 2, 2}, + new int[] {11, 2036, 2, 1, 2, 2}, + new int[] {11, 2037, 2, 2, 1, 2}, + new int[] {11, 2038, 0, 2, 2, 0}, + new int[] {11, 2039, 2, 2, 0, 0}, + new int[] {11, 2040, 0, 0, 2, 2}, + new int[] {11, 2041, 2, 0, 2, 0}, + new int[] {11, 2042, 0, 2, 0, 2}, + new int[] {11, 2043, 2, 0, 0, 2}, + new int[] {11, 2044, 2, 2, 2, 2}, + new int[] {11, 2045, 0, 2, 2, 2}, + new int[] {11, 2046, 2, 2, 2, 0}, + new int[] {12, 4094, 2, 2, 0, 2}, + new int[] {12, 4095, 2, 0, 2, 2} + }; + public static int[][] HCB5 = { + new int[] {1, 0, 0, 0}, + new int[] {4, 8, -1, 0}, + new int[] {4, 9, 1, 0}, + new int[] {4, 10, 0, 1}, + new int[] {4, 11, 0, -1}, + new int[] {5, 24, 1, -1}, + new int[] {5, 25, -1, 1}, + new int[] {5, 26, -1, -1}, + new int[] {5, 27, 1, 1}, + new int[] {7, 112, -2, 0}, + new int[] {7, 113, 0, 2}, + new int[] {7, 114, 2, 0}, + new int[] {7, 115, 0, -2}, + new int[] {8, 232, -2, -1}, + new int[] {8, 233, 2, 1}, + new int[] {8, 234, -1, -2}, + new int[] {8, 235, 1, 2}, + new int[] {8, 236, -2, 1}, + new int[] {8, 237, 2, -1}, + new int[] {8, 238, -1, 2}, + new int[] {8, 239, 1, -2}, + new int[] {8, 240, -3, 0}, + new int[] {8, 241, 3, 0}, + new int[] {8, 242, 0, -3}, + new int[] {8, 243, 0, 3}, + new int[] {9, 488, -3, -1}, + new int[] {9, 489, 1, 3}, + new int[] {9, 490, 3, 1}, + new int[] {9, 491, -1, -3}, + new int[] {9, 492, -3, 1}, + new int[] {9, 493, 3, -1}, + new int[] {9, 494, 1, -3}, + new int[] {9, 495, -1, 3}, + new int[] {9, 496, -2, 2}, + new int[] {9, 497, 2, 2}, + new int[] {9, 498, -2, -2}, + new int[] {9, 499, 2, -2}, + new int[] {10, 1000, -3, -2}, + new int[] {10, 1001, 3, -2}, + new int[] {10, 1002, -2, 3}, + new int[] {10, 1003, 2, -3}, + new int[] {10, 1004, 3, 2}, + new int[] {10, 1005, 2, 3}, + new int[] {10, 1006, -3, 2}, + new int[] {10, 1007, -2, -3}, + new int[] {10, 1008, 0, -4}, + new int[] {10, 1009, -4, 0}, + new int[] {10, 1010, 4, 1}, + new int[] {10, 1011, 4, 0}, + new int[] {11, 2024, -4, -1}, + new int[] {11, 2025, 0, 4}, + new int[] {11, 2026, 4, -1}, + new int[] {11, 2027, -1, -4}, + new int[] {11, 2028, 1, 4}, + new int[] {11, 2029, -1, 4}, + new int[] {11, 2030, -4, 1}, + new int[] {11, 2031, 1, -4}, + new int[] {11, 2032, 3, -3}, + new int[] {11, 2033, -3, -3}, + new int[] {11, 2034, -3, 3}, + new int[] {11, 2035, -2, 4}, + new int[] {11, 2036, -4, -2}, + new int[] {11, 2037, 4, 2}, + new int[] {11, 2038, 2, -4}, + new int[] {11, 2039, 2, 4}, + new int[] {11, 2040, 3, 3}, + new int[] {11, 2041, -4, 2}, + new int[] {12, 4084, -2, -4}, + new int[] {12, 4085, 4, -2}, + new int[] {12, 4086, 3, -4}, + new int[] {12, 4087, -4, -3}, + new int[] {12, 4088, -4, 3}, + new int[] {12, 4089, 3, 4}, + new int[] {12, 4090, -3, 4}, + new int[] {12, 4091, 4, 3}, + new int[] {12, 4092, 4, -3}, + new int[] {12, 4093, -3, -4}, + new int[] {13, 8188, 4, -4}, + new int[] {13, 8189, -4, 4}, + new int[] {13, 8190, 4, 4}, + new int[] {13, 8191, -4, -4} + }; + public static int[][] HCB6 = { + new int[] {4, 0, 0, 0}, + new int[] {4, 1, 1, 0}, + new int[] {4, 2, 0, -1}, + new int[] {4, 3, 0, 1}, + new int[] {4, 4, -1, 0}, + new int[] {4, 5, 1, 1}, + new int[] {4, 6, -1, 1}, + new int[] {4, 7, 1, -1}, + new int[] {4, 8, -1, -1}, + new int[] {6, 36, 2, -1}, + new int[] {6, 37, 2, 1}, + new int[] {6, 38, -2, 1}, + new int[] {6, 39, -2, -1}, + new int[] {6, 40, -2, 0}, + new int[] {6, 41, -1, 2}, + new int[] {6, 42, 2, 0}, + new int[] {6, 43, 1, -2}, + new int[] {6, 44, 1, 2}, + new int[] {6, 45, 0, -2}, + new int[] {6, 46, -1, -2}, + new int[] {6, 47, 0, 2}, + new int[] {6, 48, 2, -2}, + new int[] {6, 49, -2, 2}, + new int[] {6, 50, -2, -2}, + new int[] {6, 51, 2, 2}, + new int[] {7, 104, -3, 1}, + new int[] {7, 105, 3, 1}, + new int[] {7, 106, 3, -1}, + new int[] {7, 107, -1, 3}, + new int[] {7, 108, -3, -1}, + new int[] {7, 109, 1, 3}, + new int[] {7, 110, 1, -3}, + new int[] {7, 111, -1, -3}, + new int[] {7, 112, 3, 0}, + new int[] {7, 113, -3, 0}, + new int[] {7, 114, 0, -3}, + new int[] {7, 115, 0, 3}, + new int[] {7, 116, 3, 2}, + new int[] {8, 234, -3, -2}, + new int[] {8, 235, -2, 3}, + new int[] {8, 236, 2, 3}, + new int[] {8, 237, 3, -2}, + new int[] {8, 238, 2, -3}, + new int[] {8, 239, -2, -3}, + new int[] {8, 240, -3, 2}, + new int[] {8, 241, 3, 3}, + new int[] {9, 484, 3, -3}, + new int[] {9, 485, -3, -3}, + new int[] {9, 486, -3, 3}, + new int[] {9, 487, 1, -4}, + new int[] {9, 488, -1, -4}, + new int[] {9, 489, 4, 1}, + new int[] {9, 490, -4, 1}, + new int[] {9, 491, -4, -1}, + new int[] {9, 492, 1, 4}, + new int[] {9, 493, 4, -1}, + new int[] {9, 494, -1, 4}, + new int[] {9, 495, 0, -4}, + new int[] {9, 496, -4, 2}, + new int[] {9, 497, -4, -2}, + new int[] {9, 498, 2, 4}, + new int[] {9, 499, -2, -4}, + new int[] {9, 500, -4, 0}, + new int[] {9, 501, 4, 2}, + new int[] {9, 502, 4, -2}, + new int[] {9, 503, -2, 4}, + new int[] {9, 504, 4, 0}, + new int[] {9, 505, 2, -4}, + new int[] {9, 506, 0, 4}, + new int[] {10, 1014, -3, -4}, + new int[] {10, 1015, -3, 4}, + new int[] {10, 1016, 3, -4}, + new int[] {10, 1017, 4, -3}, + new int[] {10, 1018, 3, 4}, + new int[] {10, 1019, 4, 3}, + new int[] {10, 1020, -4, 3}, + new int[] {10, 1021, -4, -3}, + new int[] {11, 2044, 4, 4}, + new int[] {11, 2045, -4, 4}, + new int[] {11, 2046, -4, -4}, + new int[] {11, 2047, 4, -4} + }; + public static int[][] HCB7 = { + new int[] {1, 0, 0, 0}, + new int[] {3, 4, 1, 0}, + new int[] {3, 5, 0, 1}, + new int[] {4, 12, 1, 1}, + new int[] {6, 52, 2, 1}, + new int[] {6, 53, 1, 2}, + new int[] {6, 54, 2, 0}, + new int[] {6, 55, 0, 2}, + new int[] {7, 112, 3, 1}, + new int[] {7, 113, 1, 3}, + new int[] {7, 114, 2, 2}, + new int[] {7, 115, 3, 0}, + new int[] {7, 116, 0, 3}, + new int[] {8, 234, 2, 3}, + new int[] {8, 235, 3, 2}, + new int[] {8, 236, 1, 4}, + new int[] {8, 237, 4, 1}, + new int[] {8, 238, 1, 5}, + new int[] {8, 239, 5, 1}, + new int[] {8, 240, 3, 3}, + new int[] {8, 241, 2, 4}, + new int[] {8, 242, 0, 4}, + new int[] {8, 243, 4, 0}, + new int[] {9, 488, 4, 2}, + new int[] {9, 489, 2, 5}, + new int[] {9, 490, 5, 2}, + new int[] {9, 491, 0, 5}, + new int[] {9, 492, 6, 1}, + new int[] {9, 493, 5, 0}, + new int[] {9, 494, 1, 6}, + new int[] {9, 495, 4, 3}, + new int[] {9, 496, 3, 5}, + new int[] {9, 497, 3, 4}, + new int[] {9, 498, 5, 3}, + new int[] {9, 499, 2, 6}, + new int[] {9, 500, 6, 2}, + new int[] {9, 501, 1, 7}, + new int[] {10, 1004, 3, 6}, + new int[] {10, 1005, 0, 6}, + new int[] {10, 1006, 6, 0}, + new int[] {10, 1007, 4, 4}, + new int[] {10, 1008, 7, 1}, + new int[] {10, 1009, 4, 5}, + new int[] {10, 1010, 7, 2}, + new int[] {10, 1011, 5, 4}, + new int[] {10, 1012, 6, 3}, + new int[] {10, 1013, 2, 7}, + new int[] {10, 1014, 7, 3}, + new int[] {10, 1015, 6, 4}, + new int[] {10, 1016, 5, 5}, + new int[] {10, 1017, 4, 6}, + new int[] {10, 1018, 3, 7}, + new int[] {11, 2038, 7, 0}, + new int[] {11, 2039, 0, 7}, + new int[] {11, 2040, 6, 5}, + new int[] {11, 2041, 5, 6}, + new int[] {11, 2042, 7, 4}, + new int[] {11, 2043, 4, 7}, + new int[] {11, 2044, 5, 7}, + new int[] {11, 2045, 7, 5}, + new int[] {12, 4092, 7, 6}, + new int[] {12, 4093, 6, 6}, + new int[] {12, 4094, 6, 7}, + new int[] {12, 4095, 7, 7} + }; + public static int[][] HCB8 = { + new int[] {3, 0, 1, 1}, + new int[] {4, 2, 2, 1}, + new int[] {4, 3, 1, 0}, + new int[] {4, 4, 1, 2}, + new int[] {4, 5, 0, 1}, + new int[] {4, 6, 2, 2}, + new int[] {5, 14, 0, 0}, + new int[] {5, 15, 2, 0}, + new int[] {5, 16, 0, 2}, + new int[] {5, 17, 3, 1}, + new int[] {5, 18, 1, 3}, + new int[] {5, 19, 3, 2}, + new int[] {5, 20, 2, 3}, + new int[] {6, 42, 3, 3}, + new int[] {6, 43, 4, 1}, + new int[] {6, 44, 1, 4}, + new int[] {6, 45, 4, 2}, + new int[] {6, 46, 2, 4}, + new int[] {6, 47, 3, 0}, + new int[] {6, 48, 0, 3}, + new int[] {6, 49, 4, 3}, + new int[] {6, 50, 3, 4}, + new int[] {6, 51, 5, 2}, + new int[] {7, 104, 5, 1}, + new int[] {7, 105, 2, 5}, + new int[] {7, 106, 1, 5}, + new int[] {7, 107, 5, 3}, + new int[] {7, 108, 3, 5}, + new int[] {7, 109, 4, 4}, + new int[] {7, 110, 5, 4}, + new int[] {7, 111, 0, 4}, + new int[] {7, 112, 4, 5}, + new int[] {7, 113, 4, 0}, + new int[] {7, 114, 2, 6}, + new int[] {7, 115, 6, 2}, + new int[] {7, 116, 6, 1}, + new int[] {7, 117, 1, 6}, + new int[] {8, 236, 3, 6}, + new int[] {8, 237, 6, 3}, + new int[] {8, 238, 5, 5}, + new int[] {8, 239, 5, 0}, + new int[] {8, 240, 6, 4}, + new int[] {8, 241, 0, 5}, + new int[] {8, 242, 4, 6}, + new int[] {8, 243, 7, 1}, + new int[] {8, 244, 7, 2}, + new int[] {8, 245, 2, 7}, + new int[] {8, 246, 6, 5}, + new int[] {8, 247, 7, 3}, + new int[] {8, 248, 1, 7}, + new int[] {8, 249, 5, 6}, + new int[] {8, 250, 3, 7}, + new int[] {9, 502, 6, 6}, + new int[] {9, 503, 7, 4}, + new int[] {9, 504, 6, 0}, + new int[] {9, 505, 4, 7}, + new int[] {9, 506, 0, 6}, + new int[] {9, 507, 7, 5}, + new int[] {9, 508, 7, 6}, + new int[] {9, 509, 6, 7}, + new int[] {10, 1020, 5, 7}, + new int[] {10, 1021, 7, 0}, + new int[] {10, 1022, 0, 7}, + new int[] {10, 1023, 7, 7} + }; + public static int[][] HCB9 = { + new int[] {1, 0, 0, 0}, + new int[] {3, 4, 1, 0}, + new int[] {3, 5, 0, 1}, + new int[] {4, 12, 1, 1}, + new int[] {6, 52, 2, 1}, + new int[] {6, 53, 1, 2}, + new int[] {6, 54, 2, 0}, + new int[] {6, 55, 0, 2}, + new int[] {7, 112, 3, 1}, + new int[] {7, 113, 2, 2}, + new int[] {7, 114, 1, 3}, + new int[] {8, 230, 3, 0}, + new int[] {8, 231, 0, 3}, + new int[] {8, 232, 2, 3}, + new int[] {8, 233, 3, 2}, + new int[] {8, 234, 1, 4}, + new int[] {8, 235, 4, 1}, + new int[] {8, 236, 2, 4}, + new int[] {8, 237, 1, 5}, + new int[] {9, 476, 4, 2}, + new int[] {9, 477, 3, 3}, + new int[] {9, 478, 0, 4}, + new int[] {9, 479, 4, 0}, + new int[] {9, 480, 5, 1}, + new int[] {9, 481, 2, 5}, + new int[] {9, 482, 1, 6}, + new int[] {9, 483, 3, 4}, + new int[] {9, 484, 5, 2}, + new int[] {9, 485, 6, 1}, + new int[] {9, 486, 4, 3}, + new int[] {10, 974, 0, 5}, + new int[] {10, 975, 2, 6}, + new int[] {10, 976, 5, 0}, + new int[] {10, 977, 1, 7}, + new int[] {10, 978, 3, 5}, + new int[] {10, 979, 1, 8}, + new int[] {10, 980, 8, 1}, + new int[] {10, 981, 4, 4}, + new int[] {10, 982, 5, 3}, + new int[] {10, 983, 6, 2}, + new int[] {10, 984, 7, 1}, + new int[] {10, 985, 0, 6}, + new int[] {10, 986, 8, 2}, + new int[] {10, 987, 2, 8}, + new int[] {10, 988, 3, 6}, + new int[] {10, 989, 2, 7}, + new int[] {10, 990, 4, 5}, + new int[] {10, 991, 9, 1}, + new int[] {10, 992, 1, 9}, + new int[] {10, 993, 7, 2}, + new int[] {11, 1988, 6, 0}, + new int[] {11, 1989, 5, 4}, + new int[] {11, 1990, 6, 3}, + new int[] {11, 1991, 8, 3}, + new int[] {11, 1992, 0, 7}, + new int[] {11, 1993, 9, 2}, + new int[] {11, 1994, 3, 8}, + new int[] {11, 1995, 4, 6}, + new int[] {11, 1996, 3, 7}, + new int[] {11, 1997, 0, 8}, + new int[] {11, 1998, 10, 1}, + new int[] {11, 1999, 6, 4}, + new int[] {11, 2000, 2, 9}, + new int[] {11, 2001, 5, 5}, + new int[] {11, 2002, 8, 0}, + new int[] {11, 2003, 7, 0}, + new int[] {11, 2004, 7, 3}, + new int[] {11, 2005, 10, 2}, + new int[] {11, 2006, 9, 3}, + new int[] {11, 2007, 8, 4}, + new int[] {11, 2008, 1, 10}, + new int[] {11, 2009, 7, 4}, + new int[] {11, 2010, 6, 5}, + new int[] {11, 2011, 5, 6}, + new int[] {11, 2012, 4, 8}, + new int[] {11, 2013, 4, 7}, + new int[] {11, 2014, 3, 9}, + new int[] {11, 2015, 11, 1}, + new int[] {11, 2016, 5, 8}, + new int[] {11, 2017, 9, 0}, + new int[] {11, 2018, 8, 5}, + new int[] {12, 4038, 10, 3}, + new int[] {12, 4039, 2, 10}, + new int[] {12, 4040, 0, 9}, + new int[] {12, 4041, 11, 2}, + new int[] {12, 4042, 9, 4}, + new int[] {12, 4043, 6, 6}, + new int[] {12, 4044, 12, 1}, + new int[] {12, 4045, 4, 9}, + new int[] {12, 4046, 8, 6}, + new int[] {12, 4047, 1, 11}, + new int[] {12, 4048, 9, 5}, + new int[] {12, 4049, 10, 4}, + new int[] {12, 4050, 5, 7}, + new int[] {12, 4051, 7, 5}, + new int[] {12, 4052, 2, 11}, + new int[] {12, 4053, 1, 12}, + new int[] {12, 4054, 12, 2}, + new int[] {12, 4055, 11, 3}, + new int[] {12, 4056, 3, 10}, + new int[] {12, 4057, 5, 9}, + new int[] {12, 4058, 6, 7}, + new int[] {12, 4059, 8, 7}, + new int[] {12, 4060, 11, 4}, + new int[] {12, 4061, 0, 10}, + new int[] {12, 4062, 7, 6}, + new int[] {12, 4063, 12, 3}, + new int[] {12, 4064, 10, 0}, + new int[] {12, 4065, 10, 5}, + new int[] {12, 4066, 4, 10}, + new int[] {12, 4067, 6, 8}, + new int[] {12, 4068, 2, 12}, + new int[] {12, 4069, 9, 6}, + new int[] {12, 4070, 9, 7}, + new int[] {12, 4071, 4, 11}, + new int[] {12, 4072, 11, 0}, + new int[] {12, 4073, 6, 9}, + new int[] {12, 4074, 3, 11}, + new int[] {12, 4075, 5, 10}, + new int[] {13, 8152, 8, 8}, + new int[] {13, 8153, 7, 8}, + new int[] {13, 8154, 12, 5}, + new int[] {13, 8155, 3, 12}, + new int[] {13, 8156, 11, 5}, + new int[] {13, 8157, 7, 7}, + new int[] {13, 8158, 12, 4}, + new int[] {13, 8159, 11, 6}, + new int[] {13, 8160, 10, 6}, + new int[] {13, 8161, 4, 12}, + new int[] {13, 8162, 7, 9}, + new int[] {13, 8163, 5, 11}, + new int[] {13, 8164, 0, 11}, + new int[] {13, 8165, 12, 6}, + new int[] {13, 8166, 6, 10}, + new int[] {13, 8167, 12, 0}, + new int[] {13, 8168, 10, 7}, + new int[] {13, 8169, 5, 12}, + new int[] {13, 8170, 7, 10}, + new int[] {13, 8171, 9, 8}, + new int[] {13, 8172, 0, 12}, + new int[] {13, 8173, 11, 7}, + new int[] {13, 8174, 8, 9}, + new int[] {13, 8175, 9, 9}, + new int[] {13, 8176, 10, 8}, + new int[] {13, 8177, 7, 11}, + new int[] {13, 8178, 12, 7}, + new int[] {13, 8179, 6, 11}, + new int[] {13, 8180, 8, 11}, + new int[] {13, 8181, 11, 8}, + new int[] {13, 8182, 7, 12}, + new int[] {13, 8183, 6, 12}, + new int[] {14, 16368, 8, 10}, + new int[] {14, 16369, 10, 9}, + new int[] {14, 16370, 8, 12}, + new int[] {14, 16371, 9, 10}, + new int[] {14, 16372, 9, 11}, + new int[] {14, 16373, 9, 12}, + new int[] {14, 16374, 10, 11}, + new int[] {14, 16375, 12, 9}, + new int[] {14, 16376, 10, 10}, + new int[] {14, 16377, 11, 9}, + new int[] {14, 16378, 12, 8}, + new int[] {14, 16379, 11, 10}, + new int[] {14, 16380, 12, 10}, + new int[] {14, 16381, 12, 11}, + new int[] {15, 32764, 10, 12}, + new int[] {15, 32765, 11, 11}, + new int[] {15, 32766, 11, 12}, + new int[] {15, 32767, 12, 12} + }; + public static int[][] HCB10 = { + new int[] {4, 0, 1, 1}, + new int[] {4, 1, 1, 2}, + new int[] {4, 2, 2, 1}, + new int[] {5, 6, 2, 2}, + new int[] {5, 7, 1, 0}, + new int[] {5, 8, 0, 1}, + new int[] {5, 9, 1, 3}, + new int[] {5, 10, 3, 2}, + new int[] {5, 11, 3, 1}, + new int[] {5, 12, 2, 3}, + new int[] {5, 13, 3, 3}, + new int[] {6, 28, 2, 0}, + new int[] {6, 29, 0, 2}, + new int[] {6, 30, 2, 4}, + new int[] {6, 31, 4, 2}, + new int[] {6, 32, 1, 4}, + new int[] {6, 33, 4, 1}, + new int[] {6, 34, 0, 0}, + new int[] {6, 35, 4, 3}, + new int[] {6, 36, 3, 4}, + new int[] {6, 37, 3, 0}, + new int[] {6, 38, 0, 3}, + new int[] {6, 39, 4, 4}, + new int[] {6, 40, 2, 5}, + new int[] {6, 41, 5, 2}, + new int[] {7, 84, 1, 5}, + new int[] {7, 85, 5, 1}, + new int[] {7, 86, 5, 3}, + new int[] {7, 87, 3, 5}, + new int[] {7, 88, 5, 4}, + new int[] {7, 89, 4, 5}, + new int[] {7, 90, 6, 2}, + new int[] {7, 91, 2, 6}, + new int[] {7, 92, 6, 3}, + new int[] {7, 93, 4, 0}, + new int[] {7, 94, 6, 1}, + new int[] {7, 95, 0, 4}, + new int[] {7, 96, 1, 6}, + new int[] {7, 97, 3, 6}, + new int[] {7, 98, 5, 5}, + new int[] {7, 99, 6, 4}, + new int[] {7, 100, 4, 6}, + new int[] {8, 202, 6, 5}, + new int[] {8, 203, 7, 2}, + new int[] {8, 204, 3, 7}, + new int[] {8, 205, 2, 7}, + new int[] {8, 206, 5, 6}, + new int[] {8, 207, 8, 2}, + new int[] {8, 208, 7, 3}, + new int[] {8, 209, 5, 0}, + new int[] {8, 210, 7, 1}, + new int[] {8, 211, 0, 5}, + new int[] {8, 212, 8, 1}, + new int[] {8, 213, 1, 7}, + new int[] {8, 214, 8, 3}, + new int[] {8, 215, 7, 4}, + new int[] {8, 216, 4, 7}, + new int[] {8, 217, 2, 8}, + new int[] {8, 218, 6, 6}, + new int[] {8, 219, 7, 5}, + new int[] {8, 220, 1, 8}, + new int[] {8, 221, 3, 8}, + new int[] {8, 222, 8, 4}, + new int[] {8, 223, 4, 8}, + new int[] {8, 224, 5, 7}, + new int[] {8, 225, 8, 5}, + new int[] {8, 226, 5, 8}, + new int[] {9, 454, 7, 6}, + new int[] {9, 455, 6, 7}, + new int[] {9, 456, 9, 2}, + new int[] {9, 457, 6, 0}, + new int[] {9, 458, 6, 8}, + new int[] {9, 459, 9, 3}, + new int[] {9, 460, 3, 9}, + new int[] {9, 461, 9, 1}, + new int[] {9, 462, 2, 9}, + new int[] {9, 463, 0, 6}, + new int[] {9, 464, 8, 6}, + new int[] {9, 465, 9, 4}, + new int[] {9, 466, 4, 9}, + new int[] {9, 467, 10, 2}, + new int[] {9, 468, 1, 9}, + new int[] {9, 469, 7, 7}, + new int[] {9, 470, 8, 7}, + new int[] {9, 471, 9, 5}, + new int[] {9, 472, 7, 8}, + new int[] {9, 473, 10, 3}, + new int[] {9, 474, 5, 9}, + new int[] {9, 475, 10, 4}, + new int[] {9, 476, 2, 10}, + new int[] {9, 477, 10, 1}, + new int[] {9, 478, 3, 10}, + new int[] {9, 479, 9, 6}, + new int[] {9, 480, 6, 9}, + new int[] {9, 481, 8, 0}, + new int[] {9, 482, 4, 10}, + new int[] {9, 483, 7, 0}, + new int[] {9, 484, 11, 2}, + new int[] {10, 970, 7, 9}, + new int[] {10, 971, 11, 3}, + new int[] {10, 972, 10, 6}, + new int[] {10, 973, 1, 10}, + new int[] {10, 974, 11, 1}, + new int[] {10, 975, 9, 7}, + new int[] {10, 976, 0, 7}, + new int[] {10, 977, 8, 8}, + new int[] {10, 978, 10, 5}, + new int[] {10, 979, 3, 11}, + new int[] {10, 980, 5, 10}, + new int[] {10, 981, 8, 9}, + new int[] {10, 982, 11, 5}, + new int[] {10, 983, 0, 8}, + new int[] {10, 984, 11, 4}, + new int[] {10, 985, 2, 11}, + new int[] {10, 986, 7, 10}, + new int[] {10, 987, 6, 10}, + new int[] {10, 988, 10, 7}, + new int[] {10, 989, 4, 11}, + new int[] {10, 990, 1, 11}, + new int[] {10, 991, 12, 2}, + new int[] {10, 992, 9, 8}, + new int[] {10, 993, 12, 3}, + new int[] {10, 994, 11, 6}, + new int[] {10, 995, 5, 11}, + new int[] {10, 996, 12, 4}, + new int[] {10, 997, 11, 7}, + new int[] {10, 998, 12, 5}, + new int[] {10, 999, 3, 12}, + new int[] {10, 1000, 6, 11}, + new int[] {10, 1001, 9, 0}, + new int[] {10, 1002, 10, 8}, + new int[] {10, 1003, 10, 0}, + new int[] {10, 1004, 12, 1}, + new int[] {10, 1005, 0, 9}, + new int[] {10, 1006, 4, 12}, + new int[] {10, 1007, 9, 9}, + new int[] {10, 1008, 12, 6}, + new int[] {10, 1009, 2, 12}, + new int[] {10, 1010, 8, 10}, + new int[] {11, 2022, 9, 10}, + new int[] {11, 2023, 1, 12}, + new int[] {11, 2024, 11, 8}, + new int[] {11, 2025, 12, 7}, + new int[] {11, 2026, 7, 11}, + new int[] {11, 2027, 5, 12}, + new int[] {11, 2028, 6, 12}, + new int[] {11, 2029, 10, 9}, + new int[] {11, 2030, 8, 11}, + new int[] {11, 2031, 12, 8}, + new int[] {11, 2032, 0, 10}, + new int[] {11, 2033, 7, 12}, + new int[] {11, 2034, 11, 0}, + new int[] {11, 2035, 10, 10}, + new int[] {11, 2036, 11, 9}, + new int[] {11, 2037, 11, 10}, + new int[] {11, 2038, 0, 11}, + new int[] {11, 2039, 11, 11}, + new int[] {11, 2040, 9, 11}, + new int[] {11, 2041, 10, 11}, + new int[] {11, 2042, 12, 0}, + new int[] {11, 2043, 8, 12}, + new int[] {12, 4088, 12, 9}, + new int[] {12, 4089, 10, 12}, + new int[] {12, 4090, 9, 12}, + new int[] {12, 4091, 11, 12}, + new int[] {12, 4092, 12, 11}, + new int[] {12, 4093, 0, 12}, + new int[] {12, 4094, 12, 10}, + new int[] {12, 4095, 12, 12} + }; + public static int[][] HCB11 = { + new int[] {4, 0, 0, 0}, + new int[] {4, 1, 1, 1}, + new int[] {5, 4, 16, 16}, + new int[] {5, 5, 1, 0}, + new int[] {5, 6, 0, 1}, + new int[] {5, 7, 2, 1}, + new int[] {5, 8, 1, 2}, + new int[] {5, 9, 2, 2}, + new int[] {6, 20, 1, 3}, + new int[] {6, 21, 3, 1}, + new int[] {6, 22, 3, 2}, + new int[] {6, 23, 2, 0}, + new int[] {6, 24, 2, 3}, + new int[] {6, 25, 0, 2}, + new int[] {6, 26, 3, 3}, + new int[] {7, 54, 4, 1}, + new int[] {7, 55, 1, 4}, + new int[] {7, 56, 4, 2}, + new int[] {7, 57, 2, 4}, + new int[] {7, 58, 4, 3}, + new int[] {7, 59, 3, 4}, + new int[] {7, 60, 3, 0}, + new int[] {7, 61, 0, 3}, + new int[] {7, 62, 5, 1}, + new int[] {7, 63, 5, 2}, + new int[] {7, 64, 2, 5}, + new int[] {7, 65, 4, 4}, + new int[] {7, 66, 1, 5}, + new int[] {7, 67, 5, 3}, + new int[] {7, 68, 3, 5}, + new int[] {7, 69, 5, 4}, + new int[] {8, 140, 4, 5}, + new int[] {8, 141, 6, 2}, + new int[] {8, 142, 2, 6}, + new int[] {8, 143, 6, 1}, + new int[] {8, 144, 6, 3}, + new int[] {8, 145, 3, 6}, + new int[] {8, 146, 1, 6}, + new int[] {8, 147, 4, 16}, + new int[] {8, 148, 3, 16}, + new int[] {8, 149, 16, 5}, + new int[] {8, 150, 16, 3}, + new int[] {8, 151, 16, 4}, + new int[] {8, 152, 6, 4}, + new int[] {8, 153, 16, 6}, + new int[] {8, 154, 4, 0}, + new int[] {8, 155, 4, 6}, + new int[] {8, 156, 0, 4}, + new int[] {8, 157, 2, 16}, + new int[] {8, 158, 5, 5}, + new int[] {8, 159, 5, 16}, + new int[] {8, 160, 16, 7}, + new int[] {8, 161, 16, 2}, + new int[] {8, 162, 16, 8}, + new int[] {8, 163, 2, 7}, + new int[] {8, 164, 7, 2}, + new int[] {8, 165, 3, 7}, + new int[] {8, 166, 6, 5}, + new int[] {8, 167, 5, 6}, + new int[] {8, 168, 6, 16}, + new int[] {8, 169, 16, 10}, + new int[] {8, 170, 7, 3}, + new int[] {8, 171, 7, 1}, + new int[] {8, 172, 16, 9}, + new int[] {8, 173, 7, 16}, + new int[] {8, 174, 1, 16}, + new int[] {8, 175, 1, 7}, + new int[] {8, 176, 4, 7}, + new int[] {8, 177, 16, 11}, + new int[] {8, 178, 7, 4}, + new int[] {8, 179, 16, 12}, + new int[] {8, 180, 8, 16}, + new int[] {8, 181, 16, 1}, + new int[] {8, 182, 6, 6}, + new int[] {8, 183, 9, 16}, + new int[] {8, 184, 2, 8}, + new int[] {8, 185, 5, 7}, + new int[] {8, 186, 10, 16}, + new int[] {8, 187, 16, 13}, + new int[] {8, 188, 8, 3}, + new int[] {8, 189, 8, 2}, + new int[] {8, 190, 3, 8}, + new int[] {8, 191, 5, 0}, + new int[] {8, 192, 16, 14}, + new int[] {8, 193, 11, 16}, + new int[] {8, 194, 7, 5}, + new int[] {8, 195, 4, 8}, + new int[] {8, 196, 6, 7}, + new int[] {8, 197, 7, 6}, + new int[] {8, 198, 0, 5}, + new int[] {9, 398, 8, 4}, + new int[] {9, 399, 16, 15}, + new int[] {9, 400, 12, 16}, + new int[] {9, 401, 1, 8}, + new int[] {9, 402, 8, 1}, + new int[] {9, 403, 14, 16}, + new int[] {9, 404, 5, 8}, + new int[] {9, 405, 13, 16}, + new int[] {9, 406, 3, 9}, + new int[] {9, 407, 8, 5}, + new int[] {9, 408, 7, 7}, + new int[] {9, 409, 2, 9}, + new int[] {9, 410, 8, 6}, + new int[] {9, 411, 9, 2}, + new int[] {9, 412, 9, 3}, + new int[] {9, 413, 15, 16}, + new int[] {9, 414, 4, 9}, + new int[] {9, 415, 6, 8}, + new int[] {9, 416, 6, 0}, + new int[] {9, 417, 9, 4}, + new int[] {9, 418, 5, 9}, + new int[] {9, 419, 8, 7}, + new int[] {9, 420, 7, 8}, + new int[] {9, 421, 1, 9}, + new int[] {9, 422, 10, 3}, + new int[] {9, 423, 0, 6}, + new int[] {9, 424, 10, 2}, + new int[] {9, 425, 9, 1}, + new int[] {9, 426, 9, 5}, + new int[] {9, 427, 4, 10}, + new int[] {9, 428, 2, 10}, + new int[] {9, 429, 9, 6}, + new int[] {9, 430, 3, 10}, + new int[] {9, 431, 6, 9}, + new int[] {9, 432, 10, 4}, + new int[] {9, 433, 8, 8}, + new int[] {9, 434, 10, 5}, + new int[] {9, 435, 9, 7}, + new int[] {9, 436, 11, 3}, + new int[] {9, 437, 1, 10}, + new int[] {9, 438, 7, 0}, + new int[] {9, 439, 10, 6}, + new int[] {9, 440, 7, 9}, + new int[] {9, 441, 3, 11}, + new int[] {9, 442, 5, 10}, + new int[] {9, 443, 10, 1}, + new int[] {9, 444, 4, 11}, + new int[] {9, 445, 11, 2}, + new int[] {9, 446, 13, 2}, + new int[] {9, 447, 6, 10}, + new int[] {9, 448, 13, 3}, + new int[] {9, 449, 2, 11}, + new int[] {9, 450, 16, 0}, + new int[] {9, 451, 5, 11}, + new int[] {9, 452, 11, 5}, + new int[] {10, 906, 11, 4}, + new int[] {10, 907, 9, 8}, + new int[] {10, 908, 7, 10}, + new int[] {10, 909, 8, 9}, + new int[] {10, 910, 0, 16}, + new int[] {10, 911, 4, 13}, + new int[] {10, 912, 0, 7}, + new int[] {10, 913, 3, 13}, + new int[] {10, 914, 11, 6}, + new int[] {10, 915, 13, 1}, + new int[] {10, 916, 13, 4}, + new int[] {10, 917, 12, 3}, + new int[] {10, 918, 2, 13}, + new int[] {10, 919, 13, 5}, + new int[] {10, 920, 8, 10}, + new int[] {10, 921, 6, 11}, + new int[] {10, 922, 10, 8}, + new int[] {10, 923, 10, 7}, + new int[] {10, 924, 14, 2}, + new int[] {10, 925, 12, 4}, + new int[] {10, 926, 1, 11}, + new int[] {10, 927, 4, 12}, + new int[] {10, 928, 11, 1}, + new int[] {10, 929, 3, 12}, + new int[] {10, 930, 1, 13}, + new int[] {10, 931, 12, 2}, + new int[] {10, 932, 7, 11}, + new int[] {10, 933, 3, 14}, + new int[] {10, 934, 5, 12}, + new int[] {10, 935, 5, 13}, + new int[] {10, 936, 14, 4}, + new int[] {10, 937, 4, 14}, + new int[] {10, 938, 11, 7}, + new int[] {10, 939, 14, 3}, + new int[] {10, 940, 12, 5}, + new int[] {10, 941, 13, 6}, + new int[] {10, 942, 12, 6}, + new int[] {10, 943, 8, 0}, + new int[] {10, 944, 11, 8}, + new int[] {10, 945, 2, 12}, + new int[] {10, 946, 9, 9}, + new int[] {10, 947, 14, 5}, + new int[] {10, 948, 6, 13}, + new int[] {10, 949, 10, 10}, + new int[] {10, 950, 15, 2}, + new int[] {10, 951, 8, 11}, + new int[] {10, 952, 9, 10}, + new int[] {10, 953, 14, 6}, + new int[] {10, 954, 10, 9}, + new int[] {10, 955, 5, 14}, + new int[] {10, 956, 11, 9}, + new int[] {10, 957, 14, 1}, + new int[] {10, 958, 2, 14}, + new int[] {10, 959, 6, 12}, + new int[] {10, 960, 1, 12}, + new int[] {10, 961, 13, 8}, + new int[] {10, 962, 0, 8}, + new int[] {10, 963, 13, 7}, + new int[] {10, 964, 7, 12}, + new int[] {10, 965, 12, 7}, + new int[] {10, 966, 7, 13}, + new int[] {10, 967, 15, 3}, + new int[] {10, 968, 12, 1}, + new int[] {10, 969, 6, 14}, + new int[] {10, 970, 2, 15}, + new int[] {10, 971, 15, 5}, + new int[] {10, 972, 15, 4}, + new int[] {10, 973, 1, 14}, + new int[] {10, 974, 9, 11}, + new int[] {10, 975, 4, 15}, + new int[] {10, 976, 14, 7}, + new int[] {10, 977, 8, 13}, + new int[] {10, 978, 13, 9}, + new int[] {10, 979, 8, 12}, + new int[] {10, 980, 5, 15}, + new int[] {10, 981, 3, 15}, + new int[] {10, 982, 10, 11}, + new int[] {10, 983, 11, 10}, + new int[] {10, 984, 12, 8}, + new int[] {10, 985, 15, 6}, + new int[] {10, 986, 15, 7}, + new int[] {10, 987, 8, 14}, + new int[] {10, 988, 15, 1}, + new int[] {10, 989, 7, 14}, + new int[] {10, 990, 9, 0}, + new int[] {10, 991, 0, 9}, + new int[] {10, 992, 9, 13}, + new int[] {10, 993, 9, 12}, + new int[] {10, 994, 12, 9}, + new int[] {10, 995, 14, 8}, + new int[] {10, 996, 10, 13}, + new int[] {10, 997, 14, 9}, + new int[] {10, 998, 12, 10}, + new int[] {10, 999, 6, 15}, + new int[] {10, 1000, 7, 15}, + new int[] {11, 2002, 9, 14}, + new int[] {11, 2003, 15, 8}, + new int[] {11, 2004, 11, 11}, + new int[] {11, 2005, 11, 14}, + new int[] {11, 2006, 1, 15}, + new int[] {11, 2007, 10, 12}, + new int[] {11, 2008, 10, 14}, + new int[] {11, 2009, 13, 11}, + new int[] {11, 2010, 13, 10}, + new int[] {11, 2011, 11, 13}, + new int[] {11, 2012, 11, 12}, + new int[] {11, 2013, 8, 15}, + new int[] {11, 2014, 14, 11}, + new int[] {11, 2015, 13, 12}, + new int[] {11, 2016, 12, 13}, + new int[] {11, 2017, 15, 9}, + new int[] {11, 2018, 14, 10}, + new int[] {11, 2019, 10, 0}, + new int[] {11, 2020, 12, 11}, + new int[] {11, 2021, 9, 15}, + new int[] {11, 2022, 0, 10}, + new int[] {11, 2023, 12, 12}, + new int[] {11, 2024, 11, 0}, + new int[] {11, 2025, 12, 14}, + new int[] {11, 2026, 10, 15}, + new int[] {11, 2027, 13, 13}, + new int[] {11, 2028, 0, 13}, + new int[] {11, 2029, 14, 12}, + new int[] {11, 2030, 15, 10}, + new int[] {11, 2031, 15, 11}, + new int[] {11, 2032, 11, 15}, + new int[] {11, 2033, 14, 13}, + new int[] {11, 2034, 13, 0}, + new int[] {11, 2035, 0, 11}, + new int[] {11, 2036, 13, 14}, + new int[] {11, 2037, 15, 12}, + new int[] {11, 2038, 15, 13}, + new int[] {11, 2039, 12, 15}, + new int[] {11, 2040, 14, 0}, + new int[] {11, 2041, 14, 14}, + new int[] {11, 2042, 13, 15}, + new int[] {11, 2043, 12, 0}, + new int[] {11, 2044, 14, 15}, + new int[] {12, 4090, 0, 14}, + new int[] {12, 4091, 0, 12}, + new int[] {12, 4092, 15, 14}, + new int[] {12, 4093, 15, 0}, + new int[] {12, 4094, 0, 15}, + new int[] {12, 4095, 15, 15} + }; + public static int[][] HCB_SF = { + new int[] {1, 0, 60}, + new int[] {3, 4, 59}, + new int[] {4, 10, 61}, + new int[] {4, 11, 58}, + new int[] {4, 12, 62}, + new int[] {5, 26, 57}, + new int[] {5, 27, 63}, + new int[] {6, 56, 56}, + new int[] {6, 57, 64}, + new int[] {6, 58, 55}, + new int[] {6, 59, 65}, + new int[] {7, 120, 66}, + new int[] {7, 121, 54}, + new int[] {7, 122, 67}, + new int[] {8, 246, 53}, + new int[] {8, 247, 68}, + new int[] {8, 248, 52}, + new int[] {8, 249, 69}, + new int[] {8, 250, 51}, + new int[] {9, 502, 70}, + new int[] {9, 503, 50}, + new int[] {9, 504, 49}, + new int[] {9, 505, 71}, + new int[] {10, 1012, 72}, + new int[] {10, 1013, 48}, + new int[] {10, 1014, 73}, + new int[] {10, 1015, 47}, + new int[] {10, 1016, 74}, + new int[] {10, 1017, 46}, + new int[] {11, 2036, 76}, + new int[] {11, 2037, 75}, + new int[] {11, 2038, 77}, + new int[] {11, 2039, 78}, + new int[] {11, 2040, 45}, + new int[] {11, 2041, 43}, + new int[] {12, 4084, 44}, + new int[] {12, 4085, 79}, + new int[] {12, 4086, 42}, + new int[] {12, 4087, 41}, + new int[] {12, 4088, 80}, + new int[] {12, 4089, 40}, + new int[] {13, 8180, 81}, + new int[] {13, 8181, 39}, + new int[] {13, 8182, 82}, + new int[] {13, 8183, 38}, + new int[] {13, 8184, 83}, + new int[] {14, 16370, 37}, + new int[] {14, 16371, 35}, + new int[] {14, 16372, 85}, + new int[] {14, 16373, 33}, + new int[] {14, 16374, 36}, + new int[] {14, 16375, 34}, + new int[] {14, 16376, 84}, + new int[] {14, 16377, 32}, + new int[] {15, 32756, 87}, + new int[] {15, 32757, 89}, + new int[] {15, 32758, 30}, + new int[] {15, 32759, 31}, + new int[] {16, 65520, 86}, + new int[] {16, 65521, 29}, + new int[] {16, 65522, 26}, + new int[] {16, 65523, 27}, + new int[] {16, 65524, 28}, + new int[] {16, 65525, 24}, + new int[] {16, 65526, 88}, + new int[] {17, 131054, 25}, + new int[] {17, 131055, 22}, + new int[] {17, 131056, 23}, + new int[] {18, 262114, 90}, + new int[] {18, 262115, 21}, + new int[] {18, 262116, 19}, + new int[] {18, 262117, 3}, + new int[] {18, 262118, 1}, + new int[] {18, 262119, 2}, + new int[] {18, 262120, 0}, + new int[] {19, 524242, 98}, + new int[] {19, 524243, 99}, + new int[] {19, 524244, 100}, + new int[] {19, 524245, 101}, + new int[] {19, 524246, 102}, + new int[] {19, 524247, 117}, + new int[] {19, 524248, 97}, + new int[] {19, 524249, 91}, + new int[] {19, 524250, 92}, + new int[] {19, 524251, 93}, + new int[] {19, 524252, 94}, + new int[] {19, 524253, 95}, + new int[] {19, 524254, 96}, + new int[] {19, 524255, 104}, + new int[] {19, 524256, 111}, + new int[] {19, 524257, 112}, + new int[] {19, 524258, 113}, + new int[] {19, 524259, 114}, + new int[] {19, 524260, 115}, + new int[] {19, 524261, 116}, + new int[] {19, 524262, 110}, + new int[] {19, 524263, 105}, + new int[] {19, 524264, 106}, + new int[] {19, 524265, 107}, + new int[] {19, 524266, 108}, + new int[] {19, 524267, 109}, + new int[] {19, 524268, 118}, + new int[] {19, 524269, 6}, + new int[] {19, 524270, 8}, + new int[] {19, 524271, 9}, + new int[] {19, 524272, 10}, + new int[] {19, 524273, 5}, + new int[] {19, 524274, 103}, + new int[] {19, 524275, 120}, + new int[] {19, 524276, 119}, + new int[] {19, 524277, 4}, + new int[] {19, 524278, 7}, + new int[] {19, 524279, 15}, + new int[] {19, 524280, 16}, + new int[] {19, 524281, 18}, + new int[] {19, 524282, 20}, + new int[] {19, 524283, 17}, + new int[] {19, 524284, 11}, + new int[] {19, 524285, 12}, + new int[] {19, 524286, 14}, + new int[] {19, 524287, 13} + }; + public static int[][][] CODEBOOKS = { HCB1, HCB2, HCB3, HCB4, HCB5, HCB6, HCB7, HCB8, HCB9, HCB10, HCB11 }; + } +} diff --git a/SharpJaad.AAC/Huffman/HCB.cs b/SharpJaad.AAC/Huffman/HCB.cs new file mode 100644 index 0000000..5a2e302 --- /dev/null +++ b/SharpJaad.AAC/Huffman/HCB.cs @@ -0,0 +1,13 @@ +namespace SharpJaad.AAC.Huffman +{ + public static class HCB + { + public const int ZERO_HCB = 0; + public const int ESCAPE_HCB = 11; + public const int NOISE_HCB = 13; + public const int INTENSITY_HCB2 = 14; + public const int INTENSITY_HCB = 15; + // + public const int FIRST_PAIR_HCB = 5; + } +} diff --git a/SharpJaad.AAC/Huffman/HuffmanDec.cs b/SharpJaad.AAC/Huffman/HuffmanDec.cs new file mode 100644 index 0000000..aa1d268 --- /dev/null +++ b/SharpJaad.AAC/Huffman/HuffmanDec.cs @@ -0,0 +1,90 @@ +using SharpJaad.AAC; +using SharpJaad.AAC.Syntax; +using System; + +namespace SharpJaad.AAC.Huffman +{ + public static class HuffmanDec + { + private static readonly bool[] _UNSIGNED = { false, false, true, true, false, false, true, true, true, true, true }; + private static int _QUAD_LEN = 4, _PAIR_LEN = 2; + + private static int FindOffset(BitStream input, int[][] table) + { + int off = 0; + int len = table[off][0]; + int cw = input.ReadBits(len); + int j; + while (cw != table[off][1]) + { + off++; + j = table[off][0] - len; + len = table[off][0]; + cw <<= j; + cw |= input.ReadBits(j); + } + return off; + } + + private static void SignValues(BitStream input, int[] data, int off, int len) + { + for (int i = off; i < off + len; i++) + { + if (data[i] != 0) + { + if (input.ReadBool()) data[i] = -data[i]; + } + } + } + + private static int GetEscape(BitStream input, int s) + { + bool neg = s < 0; + + int i = 4; + while (input.ReadBool()) + { + i++; + } + int j = input.ReadBits(i) | 1 << i; + + return neg ? -j : j; + } + + public static int DecodeScaleFactor(BitStream input) + { + int offset = FindOffset(input, Codebooks.HCB_SF); + return Codebooks.HCB_SF[offset][2]; + } + + public static void DecodeSpectralData(BitStream input, int cb, int[] data, int off) + { + int[][] HCB = Codebooks.CODEBOOKS[cb - 1]; + + //find index + int offset = FindOffset(input, HCB); + + //copy data + data[off] = HCB[offset][2]; + data[off + 1] = HCB[offset][3]; + if (cb < 5) + { + data[off + 2] = HCB[offset][4]; + data[off + 3] = HCB[offset][5]; + } + + //sign & escape + if (cb < 11) + { + if (_UNSIGNED[cb - 1]) SignValues(input, data, off, cb < 5 ? _QUAD_LEN : _PAIR_LEN); + } + else if (cb == 11 || cb > 15) + { + SignValues(input, data, off, cb < 5 ? _QUAD_LEN : _PAIR_LEN); //virtual codebooks are always unsigned + if (Math.Abs(data[off]) == 16) data[off] = GetEscape(input, data[off]); + if (Math.Abs(data[off + 1]) == 16) data[off + 1] = GetEscape(input, data[off + 1]); + } + else throw new AACException("Huffman: unknown spectral codebook: " + cb); + } + } +} diff --git a/SharpJaad.AAC/Profile.cs b/SharpJaad.AAC/Profile.cs new file mode 100644 index 0000000..f28d14f --- /dev/null +++ b/SharpJaad.AAC/Profile.cs @@ -0,0 +1,35 @@ +namespace SharpJaad.AAC +{ + public enum Profile : int + { + UNKNOWN = -1, + AAC_MAIN = 1, + AAC_LC = 2, + AAC_SSR = 3, + AAC_LTP = 4, + AAC_SBR = 5, + AAC_SCALABLE = 6, + TWIN_VQ = 7, + AAC_LD = 11, + ER_AAC_LC = 17, + ER_AAC_SSR = 18, + ER_AAC_LTP = 19, + ER_AAC_SCALABLE = 20, + ER_TWIN_VQ = 21, + ER_BSAC = 22, + ER_AAC_LD = 23 + } + + public static class ProfileExtensions + { + public static bool IsErrorResilientProfile(this Profile profile) + { + return (int)profile > 16; + } + + public static bool IsDecodingSupported(this Profile profile) + { + return profile == Profile.AAC_MAIN || profile == Profile.AAC_LC || profile == Profile.AAC_SBR || profile == Profile.ER_AAC_LC || profile == Profile.AAC_LTP || profile == Profile.ER_AAC_LTP; + } + } +} diff --git a/SharpJaad.AAC/Ps/Filterbank.cs b/SharpJaad.AAC/Ps/Filterbank.cs new file mode 100644 index 0000000..29ba259 --- /dev/null +++ b/SharpJaad.AAC/Ps/Filterbank.cs @@ -0,0 +1,386 @@ +namespace SharpJaad.AAC.Ps +{ + public class Filterbank + { + private int _frameLen; + private int[] _resolution20 = new int[3]; + private int[] _resolution34 = new int[5]; + + private float[,] _work; + private float[,,] _buffer; + private float[,,] _temp; + + public Filterbank(int numTimeSlotsRate) + { + _resolution34[0] = 12; + _resolution34[1] = 8; + _resolution34[2] = 4; + _resolution34[3] = 4; + _resolution34[4] = 4; + + _resolution20[0] = 8; + _resolution20[1] = 2; + _resolution20[2] = 2; + + _frameLen = numTimeSlotsRate; + + _work = new float[(_frameLen + 12), 2]; + + _buffer = new float[5, _frameLen, 2]; + + _temp = new float[_frameLen, 12, 2]; + } + + public void HybridAnalysis(float[,,] X, float[,,] X_hybrid, bool use34, int numTimeSlotsRate) + { + int k, n, band; + int offset = 0; + int qmf_bands = use34 ? 5 : 3; + int[] resolution = use34 ? _resolution34 : _resolution20; + + for (band = 0; band < qmf_bands; band++) + { + /* build working buffer */ + //memcpy(this.work, this.buffer[band], 12*sizeof(qmf_t)); + for (int i = 0; i < 12; i++) + { + _work[i, 0] = _buffer[band, i, 0]; + _work[i, 1] = _buffer[band, i, 1]; + } + + /* add new samples */ + for (n = 0; n < _frameLen; n++) + { + _work[12 + n, 0] = X[n + 6 /*delay*/, band, 0]; + _work[12 + n, 0] = X[n + 6 /*delay*/, band, 0]; + } + + /* store samples */ + //memcpy(this.buffer[band], this.work+this.frame_len, 12*sizeof(qmf_t)); + for (int i = 0; i < 12; i++) + { + _buffer[band, i, 0] = _work[_frameLen + i, 0]; + _buffer[band, i, 1] = _work[_frameLen + i, 1]; + } + + switch (resolution[band]) + { + case 2: + /* Type B real filter, Q[p] = 2 */ + ChannelFilter2(_frameLen, PSTables.p2_13_20, _work, _temp); + break; + case 4: + /* Type A complex filter, Q[p] = 4 */ + ChannelFilter4(_frameLen, PSTables.p4_13_34, _work, _temp); + break; + case 8: + /* Type A complex filter, Q[p] = 8 */ + ChannelFilter8(_frameLen, use34 ? PSTables.p8_13_34 : PSTables.p8_13_20, + _work, _temp); + break; + case 12: + /* Type A complex filter, Q[p] = 12 */ + ChannelFilter12(_frameLen, PSTables.p12_13_34, _work, _temp); + break; + } + + for (n = 0; n < _frameLen; n++) + { + for (k = 0; k < resolution[band]; k++) + { + X_hybrid[n, offset + k, 0] = _temp[n, k, 0]; + X_hybrid[n, offset + k, 1] = _temp[n, k, 1]; + } + } + offset += resolution[band]; + } + + /* group hybrid channels */ + if (!use34) + { + for (n = 0; n < numTimeSlotsRate; n++) + { + X_hybrid[n, 3, 0] += X_hybrid[n, 4, 0]; + X_hybrid[n, 3, 1] += X_hybrid[n, 4, 1]; + X_hybrid[n, 4, 0] = 0; + X_hybrid[n, 4, 1] = 0; + + X_hybrid[n, 2, 0] += X_hybrid[n, 5, 0]; + X_hybrid[n, 2, 1] += X_hybrid[n, 5, 1]; + X_hybrid[n, 5, 0] = 0; + X_hybrid[n, 5, 1] = 0; + } + } + } + + /* real filter, size 2 */ + private static void ChannelFilter2(int frame_len, float[] filter, float[,] buffer, float[,,] X_hybrid) + { + int i; + + for (i = 0; i < frame_len; i++) + { + float r0 = filter[0] * (buffer[0 + i, 0] + buffer[12 + i, 0]); + float r1 = filter[1] * (buffer[1 + i, 0] + buffer[11 + i, 0]); + float r2 = filter[2] * (buffer[2 + i, 0] + buffer[10 + i, 0]); + float r3 = filter[3] * (buffer[3 + i, 0] + buffer[9 + i, 0]); + float r4 = filter[4] * (buffer[4 + i, 0] + buffer[8 + i, 0]); + float r5 = filter[5] * (buffer[5 + i, 0] + buffer[7 + i, 0]); + float r6 = filter[6] * buffer[6 + i, 0]; + float i0 = filter[0] * (buffer[0 + i, 1] + buffer[12 + i, 1]); + float i1 = filter[1] * (buffer[1 + i, 1] + buffer[11 + i, 1]); + float i2 = filter[2] * (buffer[2 + i, 1] + buffer[10 + i, 1]); + float i3 = filter[3] * (buffer[3 + i, 1] + buffer[9 + i, 1]); + float i4 = filter[4] * (buffer[4 + i, 1] + buffer[8 + i, 1]); + float i5 = filter[5] * (buffer[5 + i, 1] + buffer[7 + i, 1]); + float i6 = filter[6] * buffer[6 + i, 1]; + + /* q = 0 */ + X_hybrid[i, 0, 0] = r0 + r1 + r2 + r3 + r4 + r5 + r6; + X_hybrid[i, 0, 1] = i0 + i1 + i2 + i3 + i4 + i5 + i6; + + /* q = 1 */ + X_hybrid[i, 1, 0] = r0 - r1 + r2 - r3 + r4 - r5 + r6; + X_hybrid[i, 1, 1] = i0 - i1 + i2 - i3 + i4 - i5 + i6; + } + } + + /* complex filter, size 4 */ + private static void ChannelFilter4(int frame_len, float[] filter, float[,] buffer, float[,,] X_hybrid) + { + int i; + float[] input_re1 = new float[2], input_re2 = new float[2]; + float[] input_im1 = new float[2], input_im2 = new float[2]; + + for (i = 0; i < frame_len; i++) + { + input_re1[0] = -(filter[2] * (buffer[i + 2, 0] + buffer[i + 10, 0])) + + filter[6] * buffer[i + 6, 0]; + input_re1[1] = -0.70710678118655f + * (filter[1] * (buffer[i + 1, 0] + buffer[i + 11, 0]) + + filter[3] * (buffer[i + 3, 0] + buffer[i + 9, 0]) + - filter[5] * (buffer[i + 5, 0] + buffer[i + 7, 0])); + + input_im1[0] = filter[0] * (buffer[i + 0, 1] - buffer[i + 12, 1]) + - filter[4] * (buffer[i + 4, 1] - buffer[i + 8, 1]); + input_im1[1] = 0.70710678118655f + * (filter[1] * (buffer[i + 1, 1] - buffer[i + 11, 1]) + - filter[3] * (buffer[i + 3, 1] - buffer[i + 9, 1]) + - filter[5] * (buffer[i + 5, 1] - buffer[i + 7, 1])); + + input_re2[0] = filter[0] * (buffer[i + 0, 0] - buffer[i + 12, 0]) + - filter[4] * (buffer[i + 4, 0] - buffer[i + 8, 0]); + input_re2[1] = 0.70710678118655f + * (filter[1] * (buffer[i + 1, 0] - buffer[i + 11, 0]) + - filter[3] * (buffer[i + 3, 0] - buffer[i + 9, 0]) + - filter[5] * (buffer[i + 5, 0] - buffer[i + 7, 0])); + + input_im2[0] = -(filter[2] * (buffer[i + 2, 1] + buffer[i + 10, 1])) + + filter[6] * buffer[i + 6, 1]; + input_im2[1] = -0.70710678118655f + * (filter[1] * (buffer[i + 1, 1] + buffer[i + 11, 1]) + + filter[3] * (buffer[i + 3, 1] + buffer[i + 9, 1]) + - filter[5] * (buffer[i + 5, 1] + buffer[i + 7, 1])); + + /* q == 0 */ + X_hybrid[i, 0, 0] = input_re1[0] + input_re1[1] + input_im1[0] + input_im1[1]; + X_hybrid[i, 0, 1] = -input_re2[0] - input_re2[1] + input_im2[0] + input_im2[1]; + + /* q == 1 */ + X_hybrid[i, 1, 0] = input_re1[0] - input_re1[1] - input_im1[0] + input_im1[1]; + X_hybrid[i, 1, 1] = input_re2[0] - input_re2[1] + input_im2[0] - input_im2[1]; + + /* q == 2 */ + X_hybrid[i, 2, 0] = input_re1[0] - input_re1[1] + input_im1[0] - input_im1[1]; + X_hybrid[i, 2, 1] = -input_re2[0] + input_re2[1] + input_im2[0] - input_im2[1]; + + /* q == 3 */ + X_hybrid[i, 3, 0] = input_re1[0] + input_re1[1] - input_im1[0] - input_im1[1]; + X_hybrid[i, 3, 1] = input_re2[0] + input_re2[1] + input_im2[0] + input_im2[1]; + } + } + + private static void DCT3_4_Unscaled(float[] y, float[] x) + { + float f0, f1, f2, f3, f4, f5, f6, f7, f8; + + f0 = x[2] * 0.7071067811865476f; + f1 = x[0] - f0; + f2 = x[0] + f0; + f3 = x[1] + x[3]; + f4 = x[1] * 1.3065629648763766f; + f5 = f3 * -0.9238795325112866f; + f6 = x[3] * -0.5411961001461967f; + f7 = f4 + f5; + f8 = f6 - f5; + y[3] = f2 - f8; + y[0] = f2 + f8; + y[2] = f1 - f7; + y[1] = f1 + f7; + } + + /* complex filter, size 8 */ + private void ChannelFilter8(int frame_len, float[] filter, float[,] buffer, float[,,] X_hybrid) + { + int i, n; + float[] input_re1 = new float[4], input_re2 = new float[4]; + float[] input_im1 = new float[4], input_im2 = new float[4]; + float[] x = new float[4]; + + for (i = 0; i < frame_len; i++) + { + input_re1[0] = filter[6] * buffer[6 + i, 0]; + input_re1[1] = filter[5] * (buffer[5 + i, 0] + buffer[7 + i, 0]); + input_re1[2] = -(filter[0] * (buffer[0 + i, 0] + buffer[12 + i, 0])) + filter[4] * (buffer[4 + i, 0] + buffer[8 + i, 0]); + input_re1[3] = -(filter[1] * (buffer[1 + i, 0] + buffer[11 + i, 0])) + filter[3] * (buffer[3 + i, 0] + buffer[9 + i, 0]); + + input_im1[0] = filter[5] * (buffer[7 + i, 1] - buffer[5 + i, 1]); + input_im1[1] = filter[0] * (buffer[12 + i, 1] - buffer[0 + i, 1]) + filter[4] * (buffer[8 + i, 1] - buffer[4 + i, 1]); + input_im1[2] = filter[1] * (buffer[11 + i, 1] - buffer[1 + i, 1]) + filter[3] * (buffer[9 + i, 1] - buffer[3 + i, 1]); + input_im1[3] = filter[2] * (buffer[10 + i, 1] - buffer[2 + i, 1]); + + for (n = 0; n < 4; n++) + { + x[n] = input_re1[n] - input_im1[3 - n]; + } + DCT3_4_Unscaled(x, x); + X_hybrid[i, 7, 0] = x[0]; + X_hybrid[i, 5, 0] = x[2]; + X_hybrid[i, 3, 0] = x[3]; + X_hybrid[i, 1, 0] = x[1]; + + for (n = 0; n < 4; n++) + { + x[n] = input_re1[n] + input_im1[3 - n]; + } + DCT3_4_Unscaled(x, x); + X_hybrid[i, 6, 0] = x[1]; + X_hybrid[i, 4, 0] = x[3]; + X_hybrid[i, 2, 0] = x[2]; + X_hybrid[i, 0, 0] = x[0]; + + input_im2[0] = filter[6] * buffer[6 + i, 1]; + input_im2[1] = filter[5] * (buffer[5 + i, 1] + buffer[7 + i, 1]); + input_im2[2] = -(filter[0] * (buffer[0 + i, 1] + buffer[12 + i, 1])) + filter[4] * (buffer[4 + i, 1] + buffer[8 + i, 1]); + input_im2[3] = -(filter[1] * (buffer[1 + i, 1] + buffer[11 + i, 1])) + filter[3] * (buffer[3 + i, 1] + buffer[9 + i, 1]); + + input_re2[0] = filter[5] * (buffer[7 + i, 0] - buffer[5 + i, 0]); + input_re2[1] = filter[0] * (buffer[12 + i, 0] - buffer[0 + i, 0]) + filter[4] * (buffer[8 + i, 0] - buffer[4 + i, 0]); + input_re2[2] = filter[1] * (buffer[11 + i, 0] - buffer[1 + i, 0]) + filter[3] * (buffer[9 + i, 0] - buffer[3 + i, 0]); + input_re2[3] = filter[2] * (buffer[10 + i, 0] - buffer[2 + i, 0]); + + for (n = 0; n < 4; n++) + { + x[n] = input_im2[n] + input_re2[3 - n]; + } + DCT3_4_Unscaled(x, x); + X_hybrid[i, 7, 1] = x[0]; + X_hybrid[i, 5, 1] = x[2]; + X_hybrid[i, 3, 1] = x[3]; + X_hybrid[i, 1, 1] = x[1]; + + for (n = 0; n < 4; n++) + { + x[n] = input_im2[n] - input_re2[3 - n]; + } + DCT3_4_Unscaled(x, x); + X_hybrid[i, 6, 1] = x[1]; + X_hybrid[i, 4, 1] = x[3]; + X_hybrid[i, 2, 1] = x[2]; + X_hybrid[i, 0, 1] = x[0]; + } + } + + private void DCT3_6_Unscaled(float[] y, float[] x) + { + float f0, f1, f2, f3, f4, f5, f6, f7; + + f0 = x[3] * 0.70710678118655f; + f1 = x[0] + f0; + f2 = x[0] - f0; + f3 = (x[1] - x[5]) * 0.70710678118655f; + f4 = x[2] * 0.86602540378444f + x[4] * 0.5f; + f5 = f4 - x[4]; + f6 = x[1] * 0.96592582628907f + x[5] * 0.25881904510252f; + f7 = f6 - f3; + y[0] = f1 + f6 + f4; + y[1] = f2 + f3 - x[4]; + y[2] = f7 + f2 - f5; + y[3] = f1 - f7 - f5; + y[4] = f1 - f3 - x[4]; + y[5] = f2 - f6 + f4; + } + + /* complex filter, size 12 */ + private void ChannelFilter12(int frame_len, float[] filter, float[,] buffer, float[,,] X_hybrid) + { + int i, n; + float[] input_re1 = new float[6], input_re2 = new float[6]; + float[] input_im1 = new float[6], input_im2 = new float[6]; + float[] out_re1 = new float[6], out_re2 = new float[6]; + float[] out_im1 = new float[6], out_im2 = new float[6]; + + for (i = 0; i < frame_len; i++) + { + for (n = 0; n < 6; n++) + { + if (n == 0) + { + input_re1[0] = buffer[6 + i, 0] * filter[6]; + input_re2[0] = buffer[6 + i, 1] * filter[6]; + } + else + { + input_re1[6 - n] = (buffer[n + i, 0] + buffer[12 - n + i, 0]) * filter[n]; + input_re2[6 - n] = (buffer[n + i, 1] + buffer[12 - n + i, 1]) * filter[n]; + } + input_im2[n] = (buffer[n + i, 0] - buffer[12 - n + i, 0]) * filter[n]; + input_im1[n] = (buffer[n + i, 1] - buffer[12 - n + i, 1]) * filter[n]; + } + + DCT3_6_Unscaled(out_re1, input_re1); + DCT3_6_Unscaled(out_re2, input_re2); + + DCT3_6_Unscaled(out_im1, input_im1); + DCT3_6_Unscaled(out_im2, input_im2); + + for (n = 0; n < 6; n += 2) + { + X_hybrid[i, n, 0] = out_re1[n] - out_im1[n]; + X_hybrid[i, n, 1] = out_re2[n] + out_im2[n]; + X_hybrid[i, n + 1, 0] = out_re1[n + 1] + out_im1[n + 1]; + X_hybrid[i, n + 1, 1] = out_re2[n + 1] - out_im2[n + 1]; + + X_hybrid[i, 10 - n, 0] = out_re1[n + 1] - out_im1[n + 1]; + X_hybrid[i, 10 - n, 1] = out_re2[n + 1] + out_im2[n + 1]; + X_hybrid[i, 11 - n, 0] = out_re1[n] + out_im1[n]; + X_hybrid[i, 11 - n, 1] = out_re2[n] - out_im2[n]; + } + } + } + + public void HybridSynthesis(float[,,] X, float[,,] X_hybrid, bool use34, int numTimeSlotsRate) + { + int k, n, band; + int offset = 0; + int qmf_bands = use34 ? 5 : 3; + int[] resolution = use34 ? _resolution34 : _resolution20; + + for (band = 0; band < qmf_bands; band++) + { + for (n = 0; n < _frameLen; n++) + { + X[n, band, 0] = 0; + X[n, band, 1] = 0; + + for (k = 0; k < resolution[band]; k++) + { + X[n, band, 0] += X_hybrid[n, offset + k, 0]; + X[n, band, 1] += X_hybrid[n, offset + k, 1]; + } + } + offset += resolution[band]; + } + } + } +} diff --git a/SharpJaad.AAC/Ps/HuffmanTables.cs b/SharpJaad.AAC/Ps/HuffmanTables.cs new file mode 100644 index 0000000..81a8474 --- /dev/null +++ b/SharpJaad.AAC/Ps/HuffmanTables.cs @@ -0,0 +1,258 @@ +namespace SharpJaad.AAC.Ps +{ + public static class HuffmanTables + { + /* binary lookup huffman tables */ + public static int[][] f_huff_iid_def = { + new int[] { /*0*/-31, 1}, /* index 0: 1 bits: x */ + new int[] {2, 3}, /* index 1: 2 bits: 1x */ + new int[] { /*1*/-30, /*-1*/ -32}, /* index 2: 3 bits: 10x */ + new int[] {4, 5}, /* index 3: 3 bits: 11x */ + new int[] { /*2*/-29, /*-2*/ -33}, /* index 4: 4 bits: 110x */ + new int[] {6, 7}, /* index 5: 4 bits: 111x */ + new int[] { /*3*/-28, /*-3*/ -34}, /* index 6: 5 bits: 1110x */ + new int[] {8, 9}, /* index 7: 5 bits: 1111x */ + new int[] { /*-4*/-35, /*4*/ -27}, /* index 8: 6 bits: 11110x */ + new int[] { /*5*/-26, 10}, /* index 9: 6 bits: 11111x */ + new int[] { /*-5*/-36, 11}, /* index 10: 7 bits: 111111x */ + new int[] { /*6*/-25, 12}, /* index 11: 8 bits: 1111111x */ + new int[] { /*-6*/-37, 13}, /* index 12: 9 bits: 11111111x */ + new int[] { /*-7*/-38, 14}, /* index 13: 10 bits: 111111111x */ + new int[] { /*7*/-24, 15}, /* index 14: 11 bits: 1111111111x */ + new int[] {16, 17}, /* index 15: 12 bits: 11111111111x */ + new int[] { /*8*/-23, /*-8*/ -39}, /* index 16: 13 bits: 111111111110x */ + new int[] {18, 19}, /* index 17: 13 bits: 111111111111x */ + new int[] { /*9*/-22, /*10*/ -21}, /* index 18: 14 bits: 1111111111110x */ + new int[] {20, 21}, /* index 19: 14 bits: 1111111111111x */ + new int[] { /*-9*/-40, /*11*/ -20}, /* index 20: 15 bits: 11111111111110x */ + new int[] {22, 23}, /* index 21: 15 bits: 11111111111111x */ + new int[] { /*-10*/-41, 24}, /* index 22: 16 bits: 111111111111110x */ + new int[] {25, 26}, /* index 23: 16 bits: 111111111111111x */ + new int[] { /*-11*/-42, /*-14*/ -45}, /* index 24: 17 bits: 1111111111111101x */ + new int[] { /*-13*/-44, /*-12*/ -43}, /* index 25: 17 bits: 1111111111111110x */ + new int[] { /*12*/-19, 27}, /* index 26: 17 bits: 1111111111111111x */ + new int[] { /*13*/-18, /*14*/ -17} /* index 27: 18 bits: 11111111111111111x */}; + + public static int[][] t_huff_iid_def = { + new int[] { /*0*/-31, 1}, /* index 0: 1 bits: x */ + new int[] { /*-1*/-32, 2}, /* index 1: 2 bits: 1x */ + new int[] { /*1*/-30, 3}, /* index 2: 3 bits: 11x */ + new int[] { /*-2*/-33, 4}, /* index 3: 4 bits: 111x */ + new int[] { /*2*/-29, 5}, /* index 4: 5 bits: 1111x */ + new int[] { /*-3*/-34, 6}, /* index 5: 6 bits: 11111x */ + new int[] { /*3*/-28, 7}, /* index 6: 7 bits: 111111x */ + new int[] { /*-4*/-35, 8}, /* index 7: 8 bits: 1111111x */ + new int[] { /*4*/-27, 9}, /* index 8: 9 bits: 11111111x */ + new int[] { /*-5*/-36, 10}, /* index 9: 10 bits: 111111111x */ + new int[] { /*5*/-26, 11}, /* index 10: 11 bits: 1111111111x */ + new int[] { /*-6*/-37, 12}, /* index 11: 12 bits: 11111111111x */ + new int[] { /*6*/-25, 13}, /* index 12: 13 bits: 111111111111x */ + new int[] { /*7*/-24, 14}, /* index 13: 14 bits: 1111111111111x */ + new int[] { /*-7*/-38, 15}, /* index 14: 15 bits: 11111111111111x */ + new int[] {16, 17}, /* index 15: 16 bits: 111111111111111x */ + new int[] { /*8*/-23, /*-8*/ -39}, /* index 16: 17 bits: 1111111111111110x */ + new int[] {18, 19}, /* index 17: 17 bits: 1111111111111111x */ + new int[] {20, 21}, /* index 18: 18 bits: 11111111111111110x */ + new int[] {22, 23}, /* index 19: 18 bits: 11111111111111111x */ + new int[] { /*9*/-22, /*-14*/ -45}, /* index 20: 19 bits: 111111111111111100x */ + new int[] { /*-13*/-44, /*-12*/ -43}, /* index 21: 19 bits: 111111111111111101x */ + new int[] {24, 25}, /* index 22: 19 bits: 111111111111111110x */ + new int[] {26, 27}, /* index 23: 19 bits: 111111111111111111x */ + new int[] { /*-11*/-42, /*-10*/ -41}, /* index 24: 20 bits: 1111111111111111100x */ + new int[] { /*-9*/-40, /*10*/ -21}, /* index 25: 20 bits: 1111111111111111101x */ + new int[] { /*11*/-20, /*12*/ -19}, /* index 26: 20 bits: 1111111111111111110x */ + new int[] { -18, -17 } /* index 27: 20 bits: 1111111111111111111x */}; + + public static int[][] f_huff_iid_fine = { + new int[] {1, /*0*/ -31}, /* index 0: 1 bits: x */ + new int[] {2, 3}, /* index 1: 2 bits: 0x */ + new int[] {4, /*-1*/ -32}, /* index 2: 3 bits: 00x */ + new int[] { /*1*/-30, 5}, /* index 3: 3 bits: 01x */ + new int[] { /*-2*/-33, /*2*/ -29}, /* index 4: 4 bits: 000x */ + new int[] {6, 7}, /* index 5: 4 bits: 011x */ + new int[] { /*-3*/-34, /*3*/ -28}, /* index 6: 5 bits: 0110x */ + new int[] {8, 9}, /* index 7: 5 bits: 0111x */ + new int[] { /*-4*/-35, /*4*/ -27}, /* index 8: 6 bits: 01110x */ + new int[] {10, 11}, /* index 9: 6 bits: 01111x */ + new int[] { /*-5*/-36, /*5*/ -26}, /* index 10: 7 bits: 011110x */ + new int[] {12, 13}, /* index 11: 7 bits: 011111x */ + new int[] { /*-6*/-37, /*6*/ -25}, /* index 12: 8 bits: 0111110x */ + new int[] {14, 15}, /* index 13: 8 bits: 0111111x */ + new int[] { /*7*/-24, 16}, /* index 14: 9 bits: 01111110x */ + new int[] {17, 18}, /* index 15: 9 bits: 01111111x */ + new int[] {19, /*-8*/ -39}, /* index 16: 10 bits: 011111101x */ + new int[] { /*8*/-23, 20}, /* index 17: 10 bits: 011111110x */ + new int[] {21, /*-7*/ -38}, /* index 18: 10 bits: 011111111x */ + new int[] { /*10*/-21, 22}, /* index 19: 11 bits: 0111111010x */ + new int[] {23, /*-9*/ -40}, /* index 20: 11 bits: 0111111101x */ + new int[] { /*9*/-22, 24}, /* index 21: 11 bits: 0111111110x */ + new int[] { /*-11*/-42, /*11*/ -20}, /* index 22: 12 bits: 01111110101x */ + new int[] {25, 26}, /* index 23: 12 bits: 01111111010x */ + new int[] {27, /*-10*/ -41}, /* index 24: 12 bits: 01111111101x */ + new int[] {28, /*-12*/ -43}, /* index 25: 13 bits: 011111110100x */ + new int[] { /*12*/-19, 29}, /* index 26: 13 bits: 011111110101x */ + new int[] {30, 31}, /* index 27: 13 bits: 011111111010x */ + new int[] {32, /*-14*/ -45}, /* index 28: 14 bits: 0111111101000x */ + new int[] { /*14*/-17, 33}, /* index 29: 14 bits: 0111111101011x */ + new int[] {34, /*-13*/ -44}, /* index 30: 14 bits: 0111111110100x */ + new int[] { /*13*/-18, 35}, /* index 31: 14 bits: 0111111110101x */ + new int[] {36, 37}, /* index 32: 15 bits: 01111111010000x */ + new int[] {38, /*-15*/ -46}, /* index 33: 15 bits: 01111111010111x */ + new int[] { /*15*/-16, 39}, /* index 34: 15 bits: 01111111101000x */ + new int[] {40, 41}, /* index 35: 15 bits: 01111111101011x */ + new int[] {42, 43}, /* index 36: 16 bits: 011111110100000x */ + new int[] { /*-17*/-48, /*17*/ -14}, /* index 37: 16 bits: 011111110100001x */ + new int[] {44, 45}, /* index 38: 16 bits: 011111110101110x */ + new int[] {46, 47}, /* index 39: 16 bits: 011111111010001x */ + new int[] {48, 49}, /* index 40: 16 bits: 011111111010110x */ + new int[] { /*-16*/-47, /*16*/ -15}, /* index 41: 16 bits: 011111111010111x */ + new int[] { /*-21*/-52, /*21*/ -10}, /* index 42: 17 bits: 0111111101000000x */ + new int[] { /*-19*/-50, /*19*/ -12}, /* index 43: 17 bits: 0111111101000001x */ + new int[] { /*-18*/-49, /*18*/ -13}, /* index 44: 17 bits: 0111111101011100x */ + new int[] {50, 51}, /* index 45: 17 bits: 0111111101011101x */ + new int[] {52, 53}, /* index 46: 17 bits: 0111111110100010x */ + new int[] {54, 55}, /* index 47: 17 bits: 0111111110100011x */ + new int[] {56, 57}, /* index 48: 17 bits: 0111111110101100x */ + new int[] {58, 59}, /* index 49: 17 bits: 0111111110101101x */ + new int[] { /*-26*/-57, /*-25*/ -56}, /* index 50: 18 bits: 01111111010111010x */ + new int[] { /*-28*/-59, /*-27*/ -58}, /* index 51: 18 bits: 01111111010111011x */ + new int[] { /*-22*/-53, /*22*/ -9}, /* index 52: 18 bits: 01111111101000100x */ + new int[] { /*-24*/-55, /*-23*/ -54}, /* index 53: 18 bits: 01111111101000101x */ + new int[] { /*25*/-6, /*26*/ -5}, /* index 54: 18 bits: 01111111101000110x */ + new int[] { /*23*/-8, /*24*/ -7}, /* index 55: 18 bits: 01111111101000111x */ + new int[] { /*29*/-2, /*30*/ -1}, /* index 56: 18 bits: 01111111101011000x */ + new int[] { /*27*/-4, /*28*/ -3}, /* index 57: 18 bits: 01111111101011001x */ + new int[] { /*-30*/-61, /*-29*/ -60}, /* index 58: 18 bits: 01111111101011010x */ + new int[] { -51, -11 } /* index 59: 18 bits: 01111111101011011x */}; + + public static int[][] t_huff_iid_fine = { + new int[] {1, /*0*/ -31}, /* index 0: 1 bits: x */ + new int[] { /*1*/-30, 2}, /* index 1: 2 bits: 0x */ + new int[] {3, /*-1*/ -32}, /* index 2: 3 bits: 01x */ + new int[] {4, 5}, /* index 3: 4 bits: 010x */ + new int[] {6, 7}, /* index 4: 5 bits: 0100x */ + new int[] { /*-2*/-33, /*2*/ -29}, /* index 5: 5 bits: 0101x */ + new int[] {8, /*-3*/ -34}, /* index 6: 6 bits: 01000x */ + new int[] { /*3*/-28, 9}, /* index 7: 6 bits: 01001x */ + new int[] { /*-4*/-35, /*4*/ -27}, /* index 8: 7 bits: 010000x */ + new int[] {10, 11}, /* index 9: 7 bits: 010011x */ + new int[] { /*5*/-26, 12}, /* index 10: 8 bits: 0100110x */ + new int[] {13, 14}, /* index 11: 8 bits: 0100111x */ + new int[] { /*-6*/-37, /*6*/ -25}, /* index 12: 9 bits: 01001101x */ + new int[] {15, 16}, /* index 13: 9 bits: 01001110x */ + new int[] {17, /*-5*/ -36}, /* index 14: 9 bits: 01001111x */ + new int[] {18, /*-7*/ -38}, /* index 15: 10 bits: 010011100x */ + new int[] { /*7*/-24, 19}, /* index 16: 10 bits: 010011101x */ + new int[] {20, 21}, /* index 17: 10 bits: 010011110x */ + new int[] { /*9*/-22, 22}, /* index 18: 11 bits: 0100111000x */ + new int[] {23, 24}, /* index 19: 11 bits: 0100111011x */ + new int[] { /*-8*/-39, /*8*/ -23}, /* index 20: 11 bits: 0100111100x */ + new int[] {25, 26}, /* index 21: 11 bits: 0100111101x */ + new int[] { /*11*/-20, 27}, /* index 22: 12 bits: 01001110001x */ + new int[] {28, 29}, /* index 23: 12 bits: 01001110110x */ + new int[] { /*-10*/-41, /*10*/ -21}, /* index 24: 12 bits: 01001110111x */ + new int[] {30, 31}, /* index 25: 12 bits: 01001111010x */ + new int[] {32, /*-9*/ -40}, /* index 26: 12 bits: 01001111011x */ + new int[] {33, /*-13*/ -44}, /* index 27: 13 bits: 010011100011x */ + new int[] { /*13*/-18, 34}, /* index 28: 13 bits: 010011101100x */ + new int[] {35, 36}, /* index 29: 13 bits: 010011101101x */ + new int[] {37, /*-12*/ -43}, /* index 30: 13 bits: 010011110100x */ + new int[] { /*12*/-19, 38}, /* index 31: 13 bits: 010011110101x */ + new int[] {39, /*-11*/ -42}, /* index 32: 13 bits: 010011110110x */ + new int[] {40, 41}, /* index 33: 14 bits: 0100111000110x */ + new int[] {42, 43}, /* index 34: 14 bits: 0100111011001x */ + new int[] {44, 45}, /* index 35: 14 bits: 0100111011010x */ + new int[] {46, /*-15*/ -46}, /* index 36: 14 bits: 0100111011011x */ + new int[] { /*15*/-16, 47}, /* index 37: 14 bits: 0100111101000x */ + new int[] { /*-14*/-45, /*14*/ -17}, /* index 38: 14 bits: 0100111101011x */ + new int[] {48, 49}, /* index 39: 14 bits: 0100111101100x */ + new int[] { /*-21*/-52, /*-20*/ -51}, /* index 40: 15 bits: 01001110001100x */ + new int[] { /*18*/-13, /*19*/ -12}, /* index 41: 15 bits: 01001110001101x */ + new int[] { /*-19*/-50, /*-18*/ -49}, /* index 42: 15 bits: 01001110110010x */ + new int[] {50, 51}, /* index 43: 15 bits: 01001110110011x */ + new int[] {52, 53}, /* index 44: 15 bits: 01001110110100x */ + new int[] {54, 55}, /* index 45: 15 bits: 01001110110101x */ + new int[] {56, /*-17*/ -48}, /* index 46: 15 bits: 01001110110110x */ + new int[] { /*17*/-14, 57}, /* index 47: 15 bits: 01001111010001x */ + new int[] {58, /*-16*/ -47}, /* index 48: 15 bits: 01001111011000x */ + new int[] { /*16*/-15, 59}, /* index 49: 15 bits: 01001111011001x */ + new int[] { /*-26*/-57, /*26*/ -5}, /* index 50: 16 bits: 010011101100110x */ + new int[] { /*-28*/-59, /*-27*/ -58}, /* index 51: 16 bits: 010011101100111x */ + new int[] { /*29*/-2, /*30*/ -1}, /* index 52: 16 bits: 010011101101000x */ + new int[] { /*27*/-4, /*28*/ -3}, /* index 53: 16 bits: 010011101101001x */ + new int[] { /*-30*/-61, /*-29*/ -60}, /* index 54: 16 bits: 010011101101010x */ + new int[] { /*-25*/-56, /*25*/ -6}, /* index 55: 16 bits: 010011101101011x */ + new int[] { /*-24*/-55, /*24*/ -7}, /* index 56: 16 bits: 010011101101100x */ + new int[] { /*-23*/-54, /*23*/ -8}, /* index 57: 16 bits: 010011110100011x */ + new int[] { /*-22*/-53, /*22*/ -9}, /* index 58: 16 bits: 010011110110000x */ + new int[] { -11, -10 } /* index 59: 16 bits: 010011110110011x */}; + + public static int[][] f_huff_icc = { + new int[] { /*0*/-31, 1}, /* index 0: 1 bits: x */ + new int[] { /*1*/-30, 2}, /* index 1: 2 bits: 1x */ + new int[] { /*-1*/-32, 3}, /* index 2: 3 bits: 11x */ + new int[] { /*2*/-29, 4}, /* index 3: 4 bits: 111x */ + new int[] { /*-2*/-33, 5}, /* index 4: 5 bits: 1111x */ + new int[] { /*3*/-28, 6}, /* index 5: 6 bits: 11111x */ + new int[] { /*-3*/-34, 7}, /* index 6: 7 bits: 111111x */ + new int[] { /*4*/-27, 8}, /* index 7: 8 bits: 1111111x */ + new int[] { /*5*/-26, 9}, /* index 8: 9 bits: 11111111x */ + new int[] { /*-4*/-35, 10}, /* index 9: 10 bits: 111111111x */ + new int[] { /*6*/-25, 11}, /* index 10: 11 bits: 1111111111x */ + new int[] { /*-5*/-36, 12}, /* index 11: 12 bits: 11111111111x */ + new int[] { /*7*/-24, 13}, /* index 12: 13 bits: 111111111111x */ + new int[] { -37, -38 } /* index 13: 14 bits: 1111111111111x */}; + + public static int[][] t_huff_icc = { + new int[] { /*0*/-31, 1}, /* index 0: 1 bits: x */ + new int[] { /*1*/-30, 2}, /* index 1: 2 bits: 1x */ + new int[] { /*-1*/-32, 3}, /* index 2: 3 bits: 11x */ + new int[] { /*2*/-29, 4}, /* index 3: 4 bits: 111x */ + new int[] { /*-2*/-33, 5}, /* index 4: 5 bits: 1111x */ + new int[] { /*3*/-28, 6}, /* index 5: 6 bits: 11111x */ + new int[] { /*-3*/-34, 7}, /* index 6: 7 bits: 111111x */ + new int[] { /*4*/-27, 8}, /* index 7: 8 bits: 1111111x */ + new int[] { /*-4*/-35, 9}, /* index 8: 9 bits: 11111111x */ + new int[] { /*5*/-26, 10}, /* index 9: 10 bits: 111111111x */ + new int[] { /*-5*/-36, 11}, /* index 10: 11 bits: 1111111111x */ + new int[] { /*6*/-25, 12}, /* index 11: 12 bits: 11111111111x */ + new int[] { /*-6*/-37, 13}, /* index 12: 13 bits: 111111111111x */ + new int[] { -38, -24 } /* index 13: 14 bits: 1111111111111x */}; + + public static int[][] f_huff_ipd = { + new int[] {1, /*0*/ -31}, /* index 0: 1 bits: x */ + new int[] {2, 3}, /* index 1: 2 bits: 0x */ + new int[] { /*1*/-30, 4}, /* index 2: 3 bits: 00x */ + new int[] {5, 6}, /* index 3: 3 bits: 01x */ + new int[] { /*4*/-27, /*5*/ -26}, /* index 4: 4 bits: 001x */ + new int[] { /*3*/-28, /*6*/ -25}, /* index 5: 4 bits: 010x */ + new int[] { /*2*/-29, /*7*/ -24} /* index 6: 4 bits: 011x */}; + + public static int[][] t_huff_ipd = { + new int[] {1, /*0*/ -31}, /* index 0: 1 bits: x */ + new int[] {2, 3}, /* index 1: 2 bits: 0x */ + new int[] {4, 5}, /* index 2: 3 bits: 00x */ + new int[] { /*1*/-30, /*7*/ -24}, /* index 3: 3 bits: 01x */ + new int[] { /*5*/-26, 6}, /* index 4: 4 bits: 000x */ + new int[] { /*2*/-29, /*6*/ -25}, /* index 5: 4 bits: 001x */ + new int[] { /*4*/-27, /*3*/ -28} /* index 6: 5 bits: 0001x */}; + + public static int[][] f_huff_opd = { + new int[] {1, /*0*/ -31}, /* index 0: 1 bits: x */ + new int[] {2, 3}, /* index 1: 2 bits: 0x */ + new int[] { /*7*/-24, /*1*/ -30}, /* index 2: 3 bits: 00x */ + new int[] {4, 5}, /* index 3: 3 bits: 01x */ + new int[] { /*3*/-28, /*6*/ -25}, /* index 4: 4 bits: 010x */ + new int[] { /*2*/-29, 6}, /* index 5: 4 bits: 011x */ + new int[] { /*5*/-26, /*4*/ -27} /* index 6: 5 bits: 0111x */}; + + public static int[][] t_huff_opd = { + new int[] {1, /*0*/ -31}, /* index 0: 1 bits: x */ + new int[] {2, 3}, /* index 1: 2 bits: 0x */ + new int[] {4, 5}, /* index 2: 3 bits: 00x */ + new int[] { /*1*/-30, /*7*/ -24}, /* index 3: 3 bits: 01x */ + new int[] { /*5*/-26, /*2*/ -29}, /* index 4: 4 bits: 000x */ + new int[] { /*6*/-25, 6}, /* index 5: 4 bits: 001x */ + new int[] { /*4*/-27, /*3*/ -28} /* index 6: 5 bits: 0011x */}; + } +} diff --git a/SharpJaad.AAC/Ps/PS.cs b/SharpJaad.AAC/Ps/PS.cs new file mode 100644 index 0000000..d8a4fff --- /dev/null +++ b/SharpJaad.AAC/Ps/PS.cs @@ -0,0 +1,1466 @@ +using SharpJaad.AAC.Syntax; +using System; + +namespace SharpJaad.AAC.Ps +{ + public class PS + { + /* bitstream parameters */ + private bool _enableIid, _enableIcc, _enableExt; + private int _iidMode; + private int _iccMode; + private int _nrIidPar; + private int _nrIpdopdPar; + private int _nrIccPar; + private int _frameClass; + private int _numEnv; + private int[] _borderPosition = new int[PSConstants.MAX_PS_ENVELOPES + 1]; + private bool[] _iidDt = new bool[PSConstants.MAX_PS_ENVELOPES]; + private bool[] _iccDt = new bool[PSConstants.MAX_PS_ENVELOPES]; + private bool _enableIpdopd; + private int _ipdMode; + private bool[] _ipdDt = new bool[PSConstants.MAX_PS_ENVELOPES]; + private bool[] _opdDt = new bool[PSConstants.MAX_PS_ENVELOPES]; + + /* indices */ + private int[] _iidIndexPrev = new int[34]; + private int[] _iccIndexPrev = new int[34]; + private int[] _ipdIndexPrev = new int[17]; + private int[] _opdIndexPrev = new int[17]; + private int[][] _iidIndex = new int[PSConstants.MAX_PS_ENVELOPES][]; + private int[][] _iccIndex = new int[PSConstants.MAX_PS_ENVELOPES][]; + private int[][] _ipdIndex = new int[PSConstants.MAX_PS_ENVELOPES][]; + private int[][] _opdIndex = new int[PSConstants.MAX_PS_ENVELOPES][]; + + private int[] _ipdIndex1 = new int[17]; + private int[] _opdIndex1 = new int[17]; + private int[] _ipdIndex2 = new int[17]; + private int[] _opdIndex2 = new int[17]; + /* ps data was correctly read */ + private int _psDataAvailable; + /* a header has been read */ + public bool _headerRead; + /* hybrid filterbank parameters */ + private Filterbank _hyb; + private bool _use34hybridBands; + private int _numTimeSlotsRate; + private int _numGroups; + private int _numHybridGroups; + private int _nrParBands; + private int _nrAllpassBands; + private int _decayCutoff; + private int[] _groupBorder; + private int[] _mapGroup2bk; + /* filter delay handling */ + private int _savedDelay; + private int[] _delayBufIndexSer = new int[PSConstants.NO_ALLPASS_LINKS]; + private int[] _numSampleDelaySer = new int[PSConstants.NO_ALLPASS_LINKS]; + private int[] _delayD = new int[64]; + private int[] _delayBufIndexDelay = new int[64]; + private float[,,] _delayQmf = new float[14, 64, 2]; /* 14 samples delay max, 64 QMF channels */ + + private float[,,] _delaySubQmf = new float[2, 32, 2]; /* 2 samples delay max (SubQmf is always allpass filtered) */ + + private float[,,,] _delayQmfSer = new float[PSConstants.NO_ALLPASS_LINKS, 5, 64, 2]; /* 5 samples delay max (table 8.34), 64 QMF channels */ + + private float[,,,] _delaySubQmfSer = new float[PSConstants.NO_ALLPASS_LINKS, 5, 32, 2]; /* 5 samples delay max (table 8.34) */ + /* transients */ + + private float _alphaDecay; + private float _alphaSmooth; + private float[] _P_PeakDecayNrg = new float[34]; + private float[] _P_prev = new float[34]; + private float[] _P_SmoothPeakDecayDiffNrg_prev = new float[34]; + /* mixing and phase */ + private float[,] _h11Prev = new float[50, 2]; + private float[,] _h12Prev = new float[50, 2]; + private float[,] _h21Prev = new float[50, 2]; + private float[,] _h22Prev = new float[50, 2]; + private int _phaseHist; + private float[,,] _ipdPrev = new float[20, 2, 2]; + private float[,,] _opdPrev = new float[20, 2, 2]; + + public PS(SampleFrequency sr, int numTimeSlotsRate) + { + int i; + int short_delay_band; + + for (i = 0; i < PSConstants.MAX_PS_ENVELOPES; i++) + { + _iidIndex[i] = new int[34]; + _iccIndex[i] = new int[34]; + _ipdIndex[i] = new int[17]; + _opdIndex[i] = new int[17]; + } + + _hyb = new Filterbank(numTimeSlotsRate); + _numTimeSlotsRate = numTimeSlotsRate; + + _psDataAvailable = 0; + + /* delay stuff*/ + _savedDelay = 0; + + for (i = 0; i < 64; i++) + { + _delayBufIndexDelay[i] = 0; + } + + for (i = 0; i < PSConstants.NO_ALLPASS_LINKS; i++) + { + _delayBufIndexSer[i] = 0; + /* THESE ARE CONSTANTS NOW */ + _numSampleDelaySer[i] = PSTables.delay_length_d[i]; + } + + /* THESE ARE CONSTANTS NOW */ + short_delay_band = 35; + _nrAllpassBands = 22; + _alphaDecay = 0.76592833836465f; + _alphaSmooth = 0.25f; + + /* THESE ARE CONSTANT NOW IF PS IS INDEPENDANT OF SAMPLERATE */ + for (i = 0; i < short_delay_band; i++) + { + _delayD[i] = 14; + } + for (i = short_delay_band; i < 64; i++) + { + _delayD[i] = 1; + } + + /* mixing and phase */ + for (i = 0; i < 50; i++) + { + _h11Prev[i, 0] = 1; + _h12Prev[i, 1] = 1; + _h11Prev[i, 0] = 1; + _h12Prev[i, 1] = 1; + } + + _phaseHist = 0; + + for (i = 0; i < 20; i++) + { + _ipdPrev[i, 0, 0] = 0; + _ipdPrev[i, 0, 1] = 0; + _ipdPrev[i, 1, 0] = 0; + _ipdPrev[i, 1, 1] = 0; + _opdPrev[i, 0, 0] = 0; + _opdPrev[i, 0, 1] = 0; + _opdPrev[i, 1, 0] = 0; + _opdPrev[i, 1, 1] = 0; + } + } + + public int Decode(BitStream ld) + { + int tmp, n; + long bits = ld.GetPosition(); + + /* check for new PS header */ + if (ld.ReadBool()) + { + _headerRead = true; + + _use34hybridBands = false; + + /* Inter-channel Intensity Difference (IID) parameters enabled */ + _enableIid = ld.ReadBool(); + + if (_enableIid) + { + _iidMode = ld.ReadBits(3); + + _nrIidPar = PSTables.nr_iid_par_tab[_iidMode]; + _nrIpdopdPar = PSTables.nr_ipdopd_par_tab[_iidMode]; + + if (_iidMode == 2 || _iidMode == 5) + _use34hybridBands = true; + + /* IPD freq res equal to IID freq res */ + _ipdMode = _iidMode; + } + + /* Inter-channel Coherence (ICC) parameters enabled */ + _enableIcc = ld.ReadBool(); + + if (_enableIcc) + { + _iccMode = ld.ReadBits(3); + + _nrIccPar = PSTables.nr_icc_par_tab[_iccMode]; + + if (_iccMode == 2 || _iccMode == 5) + _use34hybridBands = true; + } + + /* PS extension layer enabled */ + _enableExt = ld.ReadBool(); + } + + /* we are here, but no header has been read yet */ + if (_headerRead == false) + { + _psDataAvailable = 0; + return 1; + } + + _frameClass = ld.ReadBit(); + tmp = ld.ReadBits(2); + + _numEnv = PSTables.num_env_tab[_frameClass][tmp]; + + if (_frameClass != 0) + { + for (n = 1; n < _numEnv + 1; n++) + { + _borderPosition[n] = ld.ReadBits(5) + 1; + } + } + + if (_enableIid) + { + for (n = 0; n < _numEnv; n++) + { + _iidDt[n] = ld.ReadBool(); + + /* iid_data */ + if (_iidMode < 3) + { + HuffData(ld, _iidDt[n], _nrIidPar, HuffmanTables.t_huff_iid_def, + HuffmanTables.f_huff_iid_def, _iidIndex[n]); + } + else + { + HuffData(ld, _iidDt[n], _nrIidPar, HuffmanTables.t_huff_iid_fine, + HuffmanTables.f_huff_iid_fine, _iidIndex[n]); + } + } + } + + if (_enableIcc) + { + for (n = 0; n < _numEnv; n++) + { + _iccDt[n] = ld.ReadBool(); + + /* icc_data */ + HuffData(ld, _iccDt[n], _nrIccPar, HuffmanTables.t_huff_icc, + HuffmanTables.f_huff_icc, _iccIndex[n]); + } + } + + if (_enableExt) + { + int num_bits_left; + int cnt = ld.ReadBits(4); + if (cnt == 15) + { + cnt += ld.ReadBits(8); + } + + num_bits_left = 8 * cnt; + while (num_bits_left > 7) + { + int ps_extension_id = ld.ReadBits(2); + + num_bits_left -= 2; + num_bits_left -= PsExtension(ld, ps_extension_id, num_bits_left); + } + + ld.SkipBits(num_bits_left); + } + + int bits2 = (int)(ld.GetPosition() - bits); + + _psDataAvailable = 1; + + return bits2; + } + + private int PsExtension(BitStream ld, int ps_extension_id, int num_bits_left) + { + int n; + long bits = ld.GetPosition(); + + if (ps_extension_id == 0) + { + _enableIpdopd = ld.ReadBool(); + + if (_enableIpdopd) + { + for (n = 0; n < _numEnv; n++) + { + _ipdDt[n] = ld.ReadBool(); + + /* ipd_data */ + HuffData(ld, _ipdDt[n], _nrIpdopdPar, HuffmanTables.t_huff_ipd, + HuffmanTables.f_huff_ipd, _ipdIndex[n]); + + _opdDt[n] = ld.ReadBool(); + + /* opd_data */ + HuffData(ld, _opdDt[n], _nrIpdopdPar, HuffmanTables.t_huff_opd, + HuffmanTables.f_huff_opd, _opdIndex[n]); + } + } + ld.ReadBit(); //reserved + } + + /* return number of bits read */ + int bits2 = (int)(ld.GetPosition() - bits); + + return bits2; + } + + /* read huffman data coded in either the frequency or the time direction */ + private void HuffData(BitStream ld, bool dt, int nr_par, int[][] t_huff, int[][] f_huff, int[] par) + { + int n; + + if (dt) + { + /* coded in time direction */ + for (n = 0; n < nr_par; n++) + { + par[n] = PsHuffDec(ld, t_huff); + } + } + else + { + /* coded in frequency direction */ + par[0] = PsHuffDec(ld, f_huff); + + for (n = 1; n < nr_par; n++) + { + par[n] = PsHuffDec(ld, f_huff); + } + } + } + + /* binary search huffman decoding */ + private int PsHuffDec(BitStream ld, int[][] t_huff) + { + int bit; + int index = 0; + + while (index >= 0) + { + bit = ld.ReadBit(); + index = t_huff[index][bit]; + } + + return index + 31; + } + + /* limits the value i to the range [min,max] */ + private int DeltaClip(int i, int min, int max) + { + if (i < min) return min; + else if (i > max) return max; + else return i; + } + + + /* delta decode array */ + private void DeltaDecode(bool enable, int[] index, int[] index_prev, bool dt_flag, int nr_par, int stride, int min_index, int max_index) + { + int i; + + if (enable) + { + if (!dt_flag) + { + /* delta coded in frequency direction */ + index[0] = 0 + index[0]; + index[0] = DeltaClip(index[0], min_index, max_index); + + for (i = 1; i < nr_par; i++) + { + index[i] = index[i - 1] + index[i]; + index[i] = DeltaClip(index[i], min_index, max_index); + } + } + else + { + /* delta coded in time direction */ + for (i = 0; i < nr_par; i++) + { + //int8_t tmp2; + //int8_t tmp = index[i]; + + //printf("%d %d\n", index_prev[i*stride], index[i]); + //printf("%d\n", index[i]); + index[i] = index_prev[i * stride] + index[i]; + //tmp2 = index[i]; + index[i] = DeltaClip(index[i], min_index, max_index); + + //if (iid) + //{ + // if (index[i] == 7) + // { + // printf("%d %d %d\n", index_prev[i*stride], tmp, tmp2); + // } + //} + } + } + } + else + { + /* set indices to zero */ + for (i = 0; i < nr_par; i++) + { + index[i] = 0; + } + } + + /* coarse */ + if (stride == 2) + { + for (i = (nr_par << 1) - 1; i > 0; i--) + { + index[i] = index[i >> 1]; + } + } + } + + /* delta modulo decode array */ + /* in: log2 value of the modulo value to allow using AND instead of MOD */ + private void DeltaModuloDecode(bool enable, int[] index, int[] index_prev, bool dt_flag, int nr_par, int stride, int and_modulo) + { + int i; + + if (enable) + { + if (!dt_flag) + { + /* delta coded in frequency direction */ + index[0] = 0 + index[0]; + index[0] &= and_modulo; + + for (i = 1; i < nr_par; i++) + { + index[i] = index[i - 1] + index[i]; + index[i] &= and_modulo; + } + } + else + { + /* delta coded in time direction */ + for (i = 0; i < nr_par; i++) + { + index[i] = index_prev[i * stride] + index[i]; + index[i] &= and_modulo; + } + } + } + else + { + /* set indices to zero */ + for (i = 0; i < nr_par; i++) + { + index[i] = 0; + } + } + + /* coarse */ + if (stride == 2) + { + index[0] = 0; + for (i = (nr_par << 1) - 1; i > 0; i--) + { + index[i] = index[i >> 1]; + } + } + } + + private void Map20IndexTo34(int[] index, int bins) + { + //index[0] = index[0]; + index[1] = (index[0] + index[1]) / 2; + index[2] = index[1]; + index[3] = index[2]; + index[4] = (index[2] + index[3]) / 2; + index[5] = index[3]; + index[6] = index[4]; + index[7] = index[4]; + index[8] = index[5]; + index[9] = index[5]; + index[10] = index[6]; + index[11] = index[7]; + index[12] = index[8]; + index[13] = index[8]; + index[14] = index[9]; + index[15] = index[9]; + index[16] = index[10]; + + if (bins == 34) + { + index[17] = index[11]; + index[18] = index[12]; + index[19] = index[13]; + index[20] = index[14]; + index[21] = index[14]; + index[22] = index[15]; + index[23] = index[15]; + index[24] = index[16]; + index[25] = index[16]; + index[26] = index[17]; + index[27] = index[17]; + index[28] = index[18]; + index[29] = index[18]; + index[30] = index[18]; + index[31] = index[18]; + index[32] = index[19]; + index[33] = index[19]; + } + } + + /* parse the bitstream data decoded in ps_data() */ + private void PsDataDecode() + { + int env, bin; + + /* ps data not available, use data from previous frame */ + if (_psDataAvailable == 0) + { + _numEnv = 0; + } + + for (env = 0; env < _numEnv; env++) + { + int[] iid_index_prev; + int[] icc_index_prev; + int[] ipd_index_prev; + int[] opd_index_prev; + + int num_iid_steps = _iidMode < 3 ? 7 : 15 /*fine quant*/; + + if (env == 0) + { + /* take last envelope from previous frame */ + iid_index_prev = _iidIndexPrev; + icc_index_prev = _iccIndexPrev; + ipd_index_prev = _ipdIndexPrev; + opd_index_prev = _opdIndexPrev; + } + else + { + /* take index values from previous envelope */ + iid_index_prev = _iidIndex[env - 1]; + icc_index_prev = _iccIndex[env - 1]; + ipd_index_prev = _ipdIndex[env - 1]; + opd_index_prev = _opdIndex[env - 1]; + } + + // iid = 1; + /* delta decode iid parameters */ + DeltaDecode(_enableIid, _iidIndex[env], iid_index_prev, + _iidDt[env], _nrIidPar, + _iidMode == 0 || _iidMode == 3 ? 2 : 1, + -num_iid_steps, num_iid_steps); + // iid = 0; + + /* delta decode icc parameters */ + DeltaDecode(_enableIcc, _iccIndex[env], icc_index_prev, + _iccDt[env], _nrIccPar, + _iccMode == 0 || _iccMode == 3 ? 2 : 1, + 0, 7); + + /* delta modulo decode ipd parameters */ + DeltaModuloDecode(_enableIpdopd, _ipdIndex[env], ipd_index_prev, + _ipdDt[env], _nrIpdopdPar, 1, 7); + + /* delta modulo decode opd parameters */ + DeltaModuloDecode(_enableIpdopd, _opdIndex[env], opd_index_prev, + _opdDt[env], _nrIpdopdPar, 1, 7); + } + + /* handle error case */ + if (_numEnv == 0) + { + /* force to 1 */ + _numEnv = 1; + + if (_enableIid) + { + for (bin = 0; bin < 34; bin++) + { + _iidIndex[0][bin] = _iidIndexPrev[bin]; + } + } + else + { + for (bin = 0; bin < 34; bin++) + { + _iidIndex[0][bin] = 0; + } + } + + if (_enableIcc) + { + for (bin = 0; bin < 34; bin++) + { + _iccIndex[0][bin] = _iccIndexPrev[bin]; + } + } + else + { + for (bin = 0; bin < 34; bin++) + { + _iccIndex[0][bin] = 0; + } + } + + if (_enableIpdopd) + { + for (bin = 0; bin < 17; bin++) + { + _ipdIndex[0][bin] = _ipdIndexPrev[bin]; + _opdIndex[0][bin] = _opdIndexPrev[bin]; + } + } + else + { + for (bin = 0; bin < 17; bin++) + { + _ipdIndex[0][bin] = 0; + _opdIndex[0][bin] = 0; + } + } + } + + /* update previous indices */ + for (bin = 0; bin < 34; bin++) + { + _iidIndexPrev[bin] = _iidIndex[_numEnv - 1][bin]; + } + for (bin = 0; bin < 34; bin++) + { + _iccIndexPrev[bin] = _iccIndex[_numEnv - 1][bin]; + } + for (bin = 0; bin < 17; bin++) + { + _ipdIndexPrev[bin] = _ipdIndex[_numEnv - 1][bin]; + _opdIndexPrev[bin] = _opdIndex[_numEnv - 1][bin]; + } + + _psDataAvailable = 0; + + if (_frameClass == 0) + { + _borderPosition[0] = 0; + for (env = 1; env < _numEnv; env++) + { + _borderPosition[env] = env * _numTimeSlotsRate / _numEnv; + } + _borderPosition[_numEnv] = _numTimeSlotsRate; + } + else + { + _borderPosition[0] = 0; + + if (_borderPosition[_numEnv] < _numTimeSlotsRate) + { + for (bin = 0; bin < 34; bin++) + { + _iidIndex[_numEnv][bin] = _iidIndex[_numEnv - 1][bin]; + _iccIndex[_numEnv][bin] = _iccIndex[_numEnv - 1][bin]; + } + for (bin = 0; bin < 17; bin++) + { + _ipdIndex[_numEnv][bin] = _ipdIndex[_numEnv - 1][bin]; + _opdIndex[_numEnv][bin] = _opdIndex[_numEnv - 1][bin]; + } + _numEnv++; + _borderPosition[_numEnv] = _numTimeSlotsRate; + } + + for (env = 1; env < _numEnv; env++) + { + int thr = _numTimeSlotsRate - (_numEnv - env); + + if (_borderPosition[env] > thr) + { + _borderPosition[env] = thr; + } + else + { + thr = _borderPosition[env - 1] + 1; + if (_borderPosition[env] < thr) + { + _borderPosition[env] = thr; + } + } + } + } + + /* make sure that the indices of all parameters can be mapped + * to the same hybrid synthesis filterbank + */ + if (_use34hybridBands) + { + for (env = 0; env < _numEnv; env++) + { + if (_iidMode != 2 && _iidMode != 5) + Map20IndexTo34(_iidIndex[env], 34); + if (_iccMode != 2 && _iccMode != 5) + Map20IndexTo34(_iccIndex[env], 34); + if (_ipdMode != 2 && _ipdMode != 5) + { + Map20IndexTo34(_ipdIndex[env], 17); + Map20IndexTo34(_opdIndex[env], 17); + } + } + } + } + + /* decorrelate the mono signal using an allpass filter */ + private void PsDecorrelate(float[,,] X_left, float[,,] X_right, float[,,] X_hybrid_left, float[,,] X_hybrid_right) + { + int gr, n, m, bk; + int temp_delay = 0; + int sb, maxsb; + int[] temp_delay_ser = new int[PSConstants.NO_ALLPASS_LINKS]; + float P_SmoothPeakDecayDiffNrg, nrg; + float[,] P = new float[32, 34]; + float[,] G_TransientRatio = new float[32, 34]; + float[] inputLeft = new float[2]; + + + /* chose hybrid filterbank: 20 or 34 band case */ + float[][] Phi_Fract_SubQmf; + if (_use34hybridBands) + { + Phi_Fract_SubQmf = PSTables.Phi_Fract_SubQmf34; + } + else + { + Phi_Fract_SubQmf = PSTables.Phi_Fract_SubQmf20; + } + + /* clear the energy values */ + for (n = 0; n < 32; n++) + { + for (bk = 0; bk < 34; bk++) + { + P[n, bk] = 0; + } + } + + /* calculate the energy in each parameter band b(k) */ + for (gr = 0; gr < _numGroups; gr++) + { + /* select the parameter index b(k) to which this group belongs */ + bk = ~PSConstants.NEGATE_IPD_MASK & _mapGroup2bk[gr]; + + /* select the upper subband border for this group */ + maxsb = gr < _numHybridGroups ? _groupBorder[gr] + 1 : _groupBorder[gr + 1]; + + for (sb = _groupBorder[gr]; sb < maxsb; sb++) + { + for (n = _borderPosition[0]; n < _borderPosition[_numEnv]; n++) + { + + /* input from hybrid subbands or QMF subbands */ + if (gr < _numHybridGroups) + { + inputLeft[0] = X_hybrid_left[n, sb, 0]; + inputLeft[1] = X_hybrid_left[n, sb, 1]; + } + else + { + inputLeft[0] = X_left[n, sb, 0]; + inputLeft[1] = X_left[n, sb, 1]; + } + + /* accumulate energy */ + P[n, bk] += inputLeft[0] * inputLeft[0] + inputLeft[1] * inputLeft[1]; + } + } + } + + /* calculate transient reduction ratio for each parameter band b(k) */ + for (bk = 0; bk < _nrParBands; bk++) + { + for (n = _borderPosition[0]; n < _borderPosition[_numEnv]; n++) + { + float gamma = 1.5f; + + _P_PeakDecayNrg[bk] = _P_PeakDecayNrg[bk] * _alphaDecay; + if (_P_PeakDecayNrg[bk] < P[n, bk]) + _P_PeakDecayNrg[bk] = P[n, bk]; + + /* apply smoothing filter to peak decay energy */ + P_SmoothPeakDecayDiffNrg = _P_SmoothPeakDecayDiffNrg_prev[bk]; + P_SmoothPeakDecayDiffNrg += (_P_PeakDecayNrg[bk] - P[n, bk] - _P_SmoothPeakDecayDiffNrg_prev[bk]) * _alphaSmooth; + _P_SmoothPeakDecayDiffNrg_prev[bk] = P_SmoothPeakDecayDiffNrg; + + /* apply smoothing filter to energy */ + nrg = _P_prev[bk]; + nrg += (P[n, bk] - _P_prev[bk]) * _alphaSmooth; + _P_prev[bk] = nrg; + + /* calculate transient ratio */ + if (P_SmoothPeakDecayDiffNrg * gamma <= nrg) + { + G_TransientRatio[n, bk] = 1.0f; + } + else + { + G_TransientRatio[n, bk] = nrg / (P_SmoothPeakDecayDiffNrg * gamma); + } + } + } + + /* apply stereo decorrelation filter to the signal */ + for (gr = 0; gr < _numGroups; gr++) + { + if (gr < _numHybridGroups) + maxsb = _groupBorder[gr] + 1; + else + maxsb = _groupBorder[gr + 1]; + + /* QMF channel */ + for (sb = _groupBorder[gr]; sb < maxsb; sb++) + { + float g_DecaySlope; + float[] g_DecaySlope_filt = new float[PSConstants.NO_ALLPASS_LINKS]; + + /* g_DecaySlope: [0..1] */ + if (gr < _numHybridGroups || sb <= _decayCutoff) + { + g_DecaySlope = 1.0f; + } + else + { + int decay = _decayCutoff - sb; + if (decay <= -20 /* -1/DECAY_SLOPE */) + { + g_DecaySlope = 0; + } + else + { + /* decay(int)*decay_slope(frac) = g_DecaySlope(frac) */ + g_DecaySlope = 1.0f + PSConstants.DECAY_SLOPE * decay; + } + } + + /* calculate g_DecaySlope_filt for every m multiplied by filter_a[m] */ + for (m = 0; m < PSConstants.NO_ALLPASS_LINKS; m++) + { + g_DecaySlope_filt[m] = g_DecaySlope * PSTables.filter_a[m]; + } + + + /* set delay indices */ + temp_delay = _savedDelay; + for (n = 0; n < PSConstants.NO_ALLPASS_LINKS; n++) + { + temp_delay_ser[n] = _delayBufIndexSer[n]; + } + + for (n = _borderPosition[0]; n < _borderPosition[_numEnv]; n++) + { + float[] tmp = new float[2], tmp0 = new float[2], R0 = new float[2]; + + if (gr < _numHybridGroups) + { + /* hybrid filterbank input */ + inputLeft[0] = X_hybrid_left[n, sb, 0]; + inputLeft[1] = X_hybrid_left[n, sb, 1]; + } + else + { + /* QMF filterbank input */ + inputLeft[0] = X_left[n, sb, 0]; + inputLeft[1] = X_left[n, sb, 1]; + } + + if (sb > _nrAllpassBands && gr >= _numHybridGroups) + { + /* delay */ + + /* never hybrid subbands here, always QMF subbands */ + tmp[0] = _delayQmf[_delayBufIndexDelay[sb], sb, 0]; + tmp[1] = _delayQmf[_delayBufIndexDelay[sb], sb, 1]; + R0[0] = tmp[0]; + R0[1] = tmp[1]; + _delayQmf[_delayBufIndexDelay[sb], sb, 0] = inputLeft[0]; + _delayQmf[_delayBufIndexDelay[sb], sb, 1] = inputLeft[1]; + } + else + { + /* allpass filter */ + //int m; + float[] Phi_Fract = new float[2]; + + /* fetch parameters */ + if (gr < _numHybridGroups) + { + /* select data from the hybrid subbands */ + tmp0[0] = _delaySubQmf[temp_delay, sb, 0]; + tmp0[1] = _delaySubQmf[temp_delay, sb, 1]; + + _delaySubQmf[temp_delay, sb, 0] = inputLeft[0]; + _delaySubQmf[temp_delay, sb, 1] = inputLeft[1]; + + Phi_Fract[0] = Phi_Fract_SubQmf[sb][0]; + Phi_Fract[1] = Phi_Fract_SubQmf[sb][1]; + } + else + { + /* select data from the QMF subbands */ + tmp0[0] = _delayQmf[temp_delay, sb, 0]; + tmp0[1] = _delayQmf[temp_delay, sb, 1]; + + _delayQmf[temp_delay, sb, 0] = inputLeft[0]; + _delayQmf[temp_delay, sb, 1] = inputLeft[1]; + + Phi_Fract[0] = PSTables.Phi_Fract_Qmf[sb][0]; + Phi_Fract[1] = PSTables.Phi_Fract_Qmf[sb][1]; + } + + /* z^(-2) * Phi_Fract[k] */ + tmp[0] = tmp[0] * Phi_Fract[0] + tmp0[1] * Phi_Fract[1]; + tmp[1] = tmp0[1] * Phi_Fract[0] - tmp0[0] * Phi_Fract[1]; + + R0[0] = tmp[0]; + R0[1] = tmp[1]; + for (m = 0; m < PSConstants.NO_ALLPASS_LINKS; m++) + { + float[] Q_Fract_allpass = new float[2], tmp2 = new float[2]; + + /* fetch parameters */ + if (gr < _numHybridGroups) + { + /* select data from the hybrid subbands */ + tmp0[0] = _delaySubQmfSer[m, temp_delay_ser[m], sb, 0]; + tmp0[1] = _delaySubQmfSer[m, temp_delay_ser[m], sb, 1]; + + if (_use34hybridBands) + { + Q_Fract_allpass[0] = PSTables.Q_Fract_allpass_SubQmf34[sb][m][0]; + Q_Fract_allpass[1] = PSTables.Q_Fract_allpass_SubQmf34[sb][m][1]; + } + else + { + Q_Fract_allpass[0] = PSTables.Q_Fract_allpass_SubQmf20[sb][m][0]; + Q_Fract_allpass[1] = PSTables.Q_Fract_allpass_SubQmf20[sb][m][1]; + } + } + else + { + /* select data from the QMF subbands */ + tmp0[0] = _delayQmfSer[m, temp_delay_ser[m], sb, 0]; + tmp0[1] = _delayQmfSer[m, temp_delay_ser[m], sb, 1]; + + Q_Fract_allpass[0] = PSTables.Q_Fract_allpass_Qmf[sb][m][0]; + Q_Fract_allpass[1] = PSTables.Q_Fract_allpass_Qmf[sb][m][1]; + } + + /* delay by a fraction */ + /* z^(-d(m)) * Q_Fract_allpass[k,m] */ + tmp[0] = tmp0[0] * Q_Fract_allpass[0] + tmp0[1] * Q_Fract_allpass[1]; + tmp[1] = tmp0[1] * Q_Fract_allpass[0] - tmp0[0] * Q_Fract_allpass[1]; + + /* -a(m) * g_DecaySlope[k] */ + tmp[0] += -(g_DecaySlope_filt[m] * R0[0]); + tmp[1] += -(g_DecaySlope_filt[m] * R0[1]); + + /* -a(m) * g_DecaySlope[k] * Q_Fract_allpass[k,m] * z^(-d(m)) */ + tmp2[0] = R0[0] + g_DecaySlope_filt[m] * tmp[0]; + tmp2[1] = R0[1] + g_DecaySlope_filt[m] * tmp[1]; + + /* store sample */ + if (gr < _numHybridGroups) + { + _delaySubQmfSer[m, temp_delay_ser[m], sb, 0] = tmp2[0]; + _delaySubQmfSer[m, temp_delay_ser[m], sb, 1] = tmp2[1]; + } + else + { + _delayQmfSer[m, temp_delay_ser[m], sb, 0] = tmp2[0]; + _delayQmfSer[m, temp_delay_ser[m], sb, 1] = tmp2[1]; + } + + /* store for next iteration (or as output value if last iteration) */ + R0[0] = tmp[0]; + R0[1] = tmp[1]; + } + } + + /* select b(k) for reading the transient ratio */ + bk = ~PSConstants.NEGATE_IPD_MASK & _mapGroup2bk[gr]; + + /* duck if a past transient is found */ + R0[0] = G_TransientRatio[n, bk] * R0[0]; + R0[1] = G_TransientRatio[n, bk] * R0[1]; + + if (gr < _numHybridGroups) + { + /* hybrid */ + X_hybrid_right[n, sb, 0] = R0[0]; + X_hybrid_right[n, sb, 1] = R0[1]; + } + else + { + /* QMF */ + X_right[n, sb, 0] = R0[0]; + X_right[n, sb, 1] = R0[1]; + } + + /* Update delay buffer index */ + if (++temp_delay >= 2) + { + temp_delay = 0; + } + + /* update delay indices */ + if (sb > _nrAllpassBands && gr >= _numHybridGroups) + { + /* delay_D depends on the samplerate, it can hold the values 14 and 1 */ + if (++_delayBufIndexDelay[sb] >= _delayD[sb]) + { + _delayBufIndexDelay[sb] = 0; + } + } + + for (m = 0; m < PSConstants.NO_ALLPASS_LINKS; m++) + { + if (++temp_delay_ser[m] >= _numSampleDelaySer[m]) + { + temp_delay_ser[m] = 0; + } + } + } + } + } + + /* update delay indices */ + _savedDelay = temp_delay; + for (m = 0; m < PSConstants.NO_ALLPASS_LINKS; m++) + { + _delayBufIndexSer[m] = temp_delay_ser[m]; + } + } + + private float MagnitudeC(float[] c) + { + return (float)Math.Sqrt(c[0] * c[0] + c[1] * c[1]); + } + + private void PsMixPhase(float[,,] X_left, float[,,] X_right, float[,,] X_hybrid_left, float[,,] X_hybrid_right) + { + int n; + int gr; + int bk = 0; + int sb, maxsb; + int env; + int nr_ipdopd_par; + float[] h11 = new float[2], h12 = new float[2], h21 = new float[2], h22 = new float[2]; + float[] H11 = new float[2], H12 = new float[2], H21 = new float[2], H22 = new float[2]; + float[] deltaH11 = new float[2], deltaH12 = new float[2], deltaH21 = new float[2], deltaH22 = new float[2]; + float[] tempLeft = new float[2]; + float[] tempRight = new float[2]; + float[] phaseLeft = new float[2]; + float[] phaseRight = new float[2]; + float L; + float[] sf_iid; + int no_iid_steps; + + if (_iidMode >= 3) + { + no_iid_steps = 15; + sf_iid = PSTables.sf_iid_fine; + } + else + { + no_iid_steps = 7; + sf_iid = PSTables.sf_iid_normal; + } + + if (_ipdMode == 0 || _ipdMode == 3) + { + nr_ipdopd_par = 11; /* resolution */ + + } + else + { + nr_ipdopd_par = _nrIpdopdPar; + } + + for (gr = 0; gr < _numGroups; gr++) + { + bk = ~PSConstants.NEGATE_IPD_MASK & _mapGroup2bk[gr]; + + /* use one channel per group in the subqmf domain */ + maxsb = gr < _numHybridGroups ? _groupBorder[gr] + 1 : _groupBorder[gr + 1]; + + for (env = 0; env < _numEnv; env++) + { + if (_iccMode < 3) + { + /* type 'A' mixing as described in 8.6.4.6.2.1 */ + float c_1, c_2; + float cosa, sina; + float cosb, sinb; + float ab1, ab2; + float ab3, ab4; + + /* + c_1 = sqrt(2.0 / (1.0 + pow(10.0, quant_iid[no_iid_steps + iid_index] / 10.0))); + c_2 = sqrt(2.0 / (1.0 + pow(10.0, quant_iid[no_iid_steps - iid_index] / 10.0))); + alpha = 0.5 * acos(quant_rho[icc_index]); + beta = alpha * ( c_1 - c_2 ) / sqrt(2.0); + */ + //printf("%d\n", ps.iid_index[env][bk]); + + /* calculate the scalefactors c_1 and c_2 from the intensity differences */ + c_1 = sf_iid[no_iid_steps + _iidIndex[env][bk]]; + c_2 = sf_iid[no_iid_steps - _iidIndex[env][bk]]; + + /* calculate alpha and beta using the ICC parameters */ + cosa = PSTables.cos_alphas[_iccIndex[env][bk]]; + sina = PSTables.sin_alphas[_iccIndex[env][bk]]; + + if (_iidMode >= 3) + { + if (_iidIndex[env][bk] < 0) + { + cosb = PSTables.cos_betas_fine[-_iidIndex[env][bk]][_iccIndex[env][bk]]; + sinb = -PSTables.sin_betas_fine[-_iidIndex[env][bk]][_iccIndex[env][bk]]; + } + else + { + cosb = PSTables.cos_betas_fine[_iidIndex[env][bk]][_iccIndex[env][bk]]; + sinb = PSTables.sin_betas_fine[_iidIndex[env][bk]][_iccIndex[env][bk]]; + } + } + else + { + if (_iidIndex[env][bk] < 0) + { + cosb = PSTables.cos_betas_normal[-_iidIndex[env][bk]][_iccIndex[env][bk]]; + sinb = -PSTables.sin_betas_normal[-_iidIndex[env][bk]][_iccIndex[env][bk]]; + } + else + { + cosb = PSTables.cos_betas_normal[_iidIndex[env][bk]][_iccIndex[env][bk]]; + sinb = PSTables.sin_betas_normal[_iidIndex[env][bk]][_iccIndex[env][bk]]; + } + } + + ab1 = cosb * cosa; + ab2 = sinb * sina; + ab3 = sinb * cosa; + ab4 = cosb * sina; + + /* h_xy: COEF */ + h11[0] = c_2 * (ab1 - ab2); + h12[0] = c_1 * (ab1 + ab2); + h21[0] = c_2 * (ab3 + ab4); + h22[0] = c_1 * (ab3 - ab4); + } + else + { + /* type 'B' mixing as described in 8.6.4.6.2.2 */ + float sina, cosa; + float cosg, sing; + + if (_iidMode >= 3) + { + int abs_iid = Math.Abs(_iidIndex[env][bk]); + + cosa = PSTables.sincos_alphas_B_fine[no_iid_steps + _iidIndex[env][bk]][_iccIndex[env][bk]]; + sina = PSTables.sincos_alphas_B_fine[30 - (no_iid_steps + _iidIndex[env][bk])][_iccIndex[env][bk]]; + cosg = PSTables.cos_gammas_fine[abs_iid][_iccIndex[env][bk]]; + sing = PSTables.sin_gammas_fine[abs_iid][_iccIndex[env][bk]]; + } + else + { + int abs_iid = Math.Abs(_iidIndex[env][bk]); + + cosa = PSTables.sincos_alphas_B_normal[no_iid_steps + _iidIndex[env][bk]][_iccIndex[env][bk]]; + sina = PSTables.sincos_alphas_B_normal[14 - (no_iid_steps + _iidIndex[env][bk])][_iccIndex[env][bk]]; + cosg = PSTables.cos_gammas_normal[abs_iid][_iccIndex[env][bk]]; + sing = PSTables.sin_gammas_normal[abs_iid][_iccIndex[env][bk]]; + } + + h11[0] = PSConstants.COEF_SQRT2 * (cosa * cosg); + h12[0] = PSConstants.COEF_SQRT2 * (sina * cosg); + h21[0] = PSConstants.COEF_SQRT2 * (-cosa * sing); + h22[0] = PSConstants.COEF_SQRT2 * (sina * sing); + } + + /* calculate phase rotation parameters H_xy */ + /* note that the imaginary part of these parameters are only calculated when + IPD and OPD are enabled + */ + if (_enableIpdopd && bk < nr_ipdopd_par) + { + float xy, pq, xypq; + + /* ringbuffer index */ + int i = _phaseHist; + + /* previous value */ + tempLeft[0] = _ipdPrev[bk, i, 0] * 0.25f; + tempLeft[1] = _ipdPrev[bk, i, 1] * 0.25f; + tempRight[0] = _opdPrev[bk, i, 0] * 0.25f; + tempRight[1] = _opdPrev[bk, i, 1] * 0.25f; + + /* save current value */ + _ipdPrev[bk, i, 0] = PSTables.ipdopd_cos_tab[Math.Abs(_ipdIndex[env][bk])]; + _ipdPrev[bk, i, 1] = PSTables.ipdopd_sin_tab[Math.Abs(_ipdIndex[env][bk])]; + _opdPrev[bk, i, 0] = PSTables.ipdopd_cos_tab[Math.Abs(_opdIndex[env][bk])]; + _opdPrev[bk, i, 1] = PSTables.ipdopd_sin_tab[Math.Abs(_opdIndex[env][bk])]; + + /* add current value */ + tempLeft[0] += _ipdPrev[bk, i, 0]; + tempLeft[1] += _ipdPrev[bk, i, 1]; + tempRight[0] += _opdPrev[bk, i, 0]; + tempRight[1] += _opdPrev[bk, i, 1]; + + /* ringbuffer index */ + if (i == 0) + { + i = 2; + } + i--; + + /* get value before previous */ + tempLeft[0] += _ipdPrev[bk, i, 0] * 0.5f; + tempLeft[1] += _ipdPrev[bk, i, 1] * 0.5f; + tempRight[0] += _opdPrev[bk, i, 0] * 0.5f; + tempRight[1] += _opdPrev[bk, i, 1] * 0.5f; + + xy = MagnitudeC(tempRight); + pq = MagnitudeC(tempLeft); + + if (xy != 0) + { + phaseLeft[0] = tempRight[0] / xy; + phaseLeft[1] = tempRight[1] / xy; + } + else + { + phaseLeft[0] = 0; + phaseLeft[1] = 0; + } + + xypq = xy * pq; + + if (xypq != 0) + { + float tmp1 = tempRight[0] * tempLeft[0] + tempRight[1] * tempLeft[1]; + float tmp2 = tempRight[1] * tempLeft[0] - tempRight[0] * tempLeft[1]; + + phaseRight[0] = tmp1 / xypq; + phaseRight[1] = tmp2 / xypq; + } + else + { + phaseRight[0] = 0; + phaseRight[1] = 0; + } + + /* MUL_F(COEF, REAL) = COEF */ + h11[1] = h11[0] * phaseLeft[1]; + h12[1] = h12[0] * phaseRight[1]; + h21[1] = h21[0] * phaseLeft[1]; + h22[1] = h22[0] * phaseRight[1]; + + h11[0] = h11[0] * phaseLeft[0]; + h12[0] = h12[0] * phaseRight[0]; + h21[0] = h21[0] * phaseLeft[0]; + h22[0] = h22[0] * phaseRight[0]; + } + + /* length of the envelope n_e+1 - n_e (in time samples) */ + /* 0 < L <= 32: integer */ + L = _borderPosition[env + 1] - _borderPosition[env]; + + /* obtain final H_xy by means of linear interpolation */ + deltaH11[0] = (h11[0] - _h11Prev[gr, 0]) / L; + deltaH12[0] = (h12[0] - _h12Prev[gr, 0]) / L; + deltaH21[0] = (h21[0] - _h21Prev[gr, 0]) / L; + deltaH22[0] = (h22[0] - _h22Prev[gr, 0]) / L; + + H11[0] = _h11Prev[gr, 0]; + H12[0] = _h12Prev[gr, 0]; + H21[0] = _h21Prev[gr, 0]; + H22[0] = _h22Prev[gr, 0]; + + _h11Prev[gr, 0] = h11[0]; + _h12Prev[gr, 0] = h12[0]; + _h21Prev[gr, 0] = h21[0]; + _h22Prev[gr, 0] = h22[0]; + + /* only calculate imaginary part when needed */ + if (_enableIpdopd && bk < nr_ipdopd_par) + { + /* obtain final H_xy by means of linear interpolation */ + deltaH11[1] = (h11[1] - _h11Prev[gr, 1]) / L; + deltaH12[1] = (h12[1] - _h12Prev[gr, 1]) / L; + deltaH21[1] = (h21[1] - _h21Prev[gr, 1]) / L; + deltaH22[1] = (h22[1] - _h22Prev[gr, 1]) / L; + + H11[1] = _h11Prev[gr, 1]; + H12[1] = _h12Prev[gr, 1]; + H21[1] = _h21Prev[gr, 1]; + H22[1] = _h22Prev[gr, 1]; + + if ((PSConstants.NEGATE_IPD_MASK & _mapGroup2bk[gr]) != 0) + { + deltaH11[1] = -deltaH11[1]; + deltaH12[1] = -deltaH12[1]; + deltaH21[1] = -deltaH21[1]; + deltaH22[1] = -deltaH22[1]; + + H11[1] = -H11[1]; + H12[1] = -H12[1]; + H21[1] = -H21[1]; + H22[1] = -H22[1]; + } + + _h11Prev[gr, 1] = h11[1]; + _h12Prev[gr, 1] = h12[1]; + _h21Prev[gr, 1] = h21[1]; + _h22Prev[gr, 1] = h22[1]; + } + + /* apply H_xy to the current envelope band of the decorrelated subband */ + for (n = _borderPosition[env]; n < _borderPosition[env + 1]; n++) + { + /* addition finalises the interpolation over every n */ + H11[0] += deltaH11[0]; + H12[0] += deltaH12[0]; + H21[0] += deltaH21[0]; + H22[0] += deltaH22[0]; + if (_enableIpdopd && bk < nr_ipdopd_par) + { + H11[1] += deltaH11[1]; + H12[1] += deltaH12[1]; + H21[1] += deltaH21[1]; + H22[1] += deltaH22[1]; + } + + /* channel is an alias to the subband */ + for (sb = _groupBorder[gr]; sb < maxsb; sb++) + { + float[] inLeft = new float[2], inRight = new float[2]; + + /* load decorrelated samples */ + if (gr < _numHybridGroups) + { + inLeft[0] = X_hybrid_left[n, sb, 0]; + inLeft[1] = X_hybrid_left[n, sb, 1]; + inRight[0] = X_hybrid_right[n, sb, 0]; + inRight[1] = X_hybrid_right[n, sb, 1]; + } + else + { + inLeft[0] = X_left[n, sb, 0]; + inLeft[1] = X_left[n, sb, 1]; + inRight[0] = X_right[n, sb, 0]; + inRight[1] = X_right[n, sb, 1]; + } + + /* apply mixing */ + tempLeft[0] = H11[0] * inLeft[0] + H21[0] * inRight[0]; + tempLeft[1] = H11[0] * inLeft[1] + H21[0] * inRight[1]; + tempRight[0] = H12[0] * inLeft[0] + H22[0] * inRight[0]; + tempRight[1] = H12[0] * inLeft[1] + H22[0] * inRight[1]; + + /* only perform imaginary operations when needed */ + if (_enableIpdopd && bk < nr_ipdopd_par) + { + /* apply rotation */ + tempLeft[0] -= H11[1] * inLeft[1] + H21[1] * inRight[1]; + tempLeft[1] += H11[1] * inLeft[0] + H21[1] * inRight[0]; + tempRight[0] -= H12[1] * inLeft[1] + H22[1] * inRight[1]; + tempRight[1] += H12[1] * inLeft[0] + H22[1] * inRight[0]; + } + + /* store final samples */ + if (gr < _numHybridGroups) + { + X_hybrid_left[n, sb, 0] = tempLeft[0]; + X_hybrid_left[n, sb, 1] = tempLeft[1]; + X_hybrid_right[n, sb, 0] = tempRight[0]; + X_hybrid_right[n, sb, 1] = tempRight[1]; + } + else + { + X_left[n, sb, 0] = tempLeft[0]; + X_left[n, sb, 1] = tempLeft[1]; + X_right[n, sb, 0] = tempRight[0]; + X_right[n, sb, 1] = tempRight[1]; + } + } + } + + /* shift phase smoother's circular buffer index */ + _phaseHist++; + if (_phaseHist == 2) + { + _phaseHist = 0; + } + } + } + } + + /* main Parametric Stereo decoding function */ + public int Process(float[,,] X_left, float[,,] X_right) + { + float[,,] X_hybrid_left = new float[32, 32, 2]; + float[,,] X_hybrid_right = new float[32, 32, 2]; + + /* delta decoding of the bitstream data */ + PsDataDecode(); + + /* set up some parameters depending on filterbank type */ + if (_use34hybridBands) + { + _groupBorder = PSTables.group_border34; + _mapGroup2bk = PSTables.map_group2bk34; + _numGroups = 32 + 18; + _numHybridGroups = 32; + _nrParBands = 34; + _decayCutoff = 5; + } + else + { + _groupBorder = PSTables.group_border20; + _mapGroup2bk = PSTables.map_group2bk20; + _numGroups = 10 + 12; + _numHybridGroups = 10; + _nrParBands = 20; + _decayCutoff = 3; + } + + /* Perform further analysis on the lowest subbands to get a higher + * frequency resolution + */ + _hyb.HybridAnalysis(X_left, X_hybrid_left, + _use34hybridBands, _numTimeSlotsRate); + + /* decorrelate mono signal */ + PsDecorrelate(X_left, X_right, X_hybrid_left, X_hybrid_right); + + /* apply mixing and phase parameters */ + PsMixPhase(X_left, X_right, X_hybrid_left, X_hybrid_right); + + /* hybrid synthesis, to rebuild the SBR QMF matrices */ + _hyb.HybridSynthesis(X_left, X_hybrid_left, + _use34hybridBands, _numTimeSlotsRate); + + _hyb.HybridSynthesis(X_right, X_hybrid_right, + _use34hybridBands, _numTimeSlotsRate); + + return 0; + } + } +} diff --git a/SharpJaad.AAC/Ps/PSConstants.cs b/SharpJaad.AAC/Ps/PSConstants.cs new file mode 100644 index 0000000..5765542 --- /dev/null +++ b/SharpJaad.AAC/Ps/PSConstants.cs @@ -0,0 +1,11 @@ +namespace SharpJaad.AAC.Ps +{ + public static class PSConstants + { + public const int MAX_PS_ENVELOPES = 5; + public const int NO_ALLPASS_LINKS = 3; + public const int NEGATE_IPD_MASK = 0x1000; + public const float DECAY_SLOPE = 0.05f; + public const float COEF_SQRT2 = 1.4142135623731f; + } +} diff --git a/SharpJaad.AAC/Ps/PSTables.cs b/SharpJaad.AAC/Ps/PSTables.cs new file mode 100644 index 0000000..66c7687 --- /dev/null +++ b/SharpJaad.AAC/Ps/PSTables.cs @@ -0,0 +1,620 @@ +namespace SharpJaad.AAC.Ps +{ + public static class PSTables + { + /* type definitaions */ + /* static data tables */ + public static int[] nr_iid_par_tab = + { + 10, 20, 34, 10, 20, 34, 0, 0 + }; + public static int[] nr_icc_par_tab = + { + 10, 20, 34, 10, 20, 34, 0, 0 + }; + public static int[] nr_ipdopd_par_tab = + { + 5, 11, 17, 5, 11, 17, 0, 0 + }; + public static int[][] num_env_tab = + { + new int[] {0, 1, 2, 4}, + new int[] {1, 2, 3, 4} + }; + public static float[] filter_a = + { /* a(m) = exp(-d_48kHz(m)/7) */ + 0.65143905753106f, + 0.56471812200776f, + 0.48954165955695f + }; + + public static int[] group_border20 = + { + 6, 7, 0, 1, 2, 3, /* 6 subqmf subbands */ + 9, 8, /* 2 subqmf subbands */ + 10, 11, /* 2 subqmf subbands */ + 3, 4, 5, 6, 7, 8, 9, 11, 14, 18, 23, 35, 64 + }; + + public static int[] group_border34 = + { + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, /* 12 subqmf subbands */ + 12, 13, 14, 15, 16, 17, 18, 19, /* 8 subqmf subbands */ + 20, 21, 22, 23, /* 4 subqmf subbands */ + 24, 25, 26, 27, /* 4 subqmf subbands */ + 28, 29, 30, 31, /* 4 subqmf subbands */ + 32-27, 33-27, 34-27, 35-27, 36-27, 37-27, 38-27, 40-27, 42-27, 44-27, 46-27, 48-27, 51-27, 54-27, 57-27, 60-27, 64-27, 68-27, 91-27 + }; + + public static int[] map_group2bk20 = + { + PSConstants.NEGATE_IPD_MASK|1, PSConstants.NEGATE_IPD_MASK|0, + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 + }; + + public static int[] map_group2bk34 = + { + 0, 1, 2, 3, 4, 5, 6, 6, 7, PSConstants.NEGATE_IPD_MASK|2, PSConstants.NEGATE_IPD_MASK|1, PSConstants.NEGATE_IPD_MASK|0, + 10, 10, 4, 5, 6, 7, 8, 9, + 10, 11, 12, 9, + 14, 11, 12, 13, + 14, 15, 16, 13, + 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33 + }; + + public static int[] delay_length_d = { 3, 4, 5 /* d_48kHz */}; + /* tables */ + /* filters are mirrored in coef 6, second half left out */ + public static float[] p8_13_20 = + { + 0.00746082949812f, + 0.02270420949825f, + 0.04546865930473f, + 0.07266113929591f, + 0.09885108575264f, + 0.11793710567217f, + 0.125f + }; + + public static float[] p2_13_20 = + { + 0.0f, + 0.01899487526049f, + 0.0f, + -0.07293139167538f, + 0.0f, + 0.30596630545168f, + 0.5f + }; + + public static float[] p12_13_34 = + { + 0.04081179924692f, + 0.03812810994926f, + 0.05144908135699f, + 0.06399831151592f, + 0.07428313801106f, + 0.08100347892914f, + 0.08333333333333f + }; + + public static float[] p8_13_34 = + { + 0.01565675600122f, + 0.03752716391991f, + 0.05417891378782f, + 0.08417044116767f, + 0.10307344158036f, + 0.12222452249753f, + 0.125f + }; + + public static float[] p4_13_34 = + { + -0.05908211155639f, + -0.04871498374946f, + 0.0f, + 0.07778723915851f, + 0.16486303567403f, + 0.23279856662996f, + 0.25f + }; + + /* RE(ps->Phi_Fract_Qmf[j]) = (float)cos(M_PI*(j+0.5)*(0.39)); */ + /* IM(ps->Phi_Fract_Qmf[j]) = (float)sin(M_PI*(j+0.5)*(0.39)); */ + public static float[][] Phi_Fract_Qmf = + { + new float[] {0.8181497455f, 0.5750052333f}, + new float[] {-0.2638730407f, 0.9645574093f}, + new float[] {-0.9969173074f, 0.0784590989f}, + new float[] {-0.4115143716f, -0.9114032984f}, + new float[] {0.7181262970f, -0.6959127784f}, + new float[] {0.8980275989f, 0.4399391711f}, + new float[] {-0.1097343117f, 0.9939609766f}, + new float[] {-0.9723699093f, 0.2334453613f}, + new float[] {-0.5490227938f, -0.8358073831f}, + new float[] {0.6004202366f, -0.7996846437f}, + new float[] {0.9557930231f, 0.2940403223f}, + new float[] {0.0471064523f, 0.9988898635f}, + new float[] {-0.9238795042f, 0.3826834261f}, + new float[] {-0.6730124950f, -0.7396311164f}, + new float[] {0.4679298103f, -0.8837656379f}, + new float[] {0.9900236726f, 0.1409012377f}, + new float[] {0.2027872950f, 0.9792228341f}, + new float[] {-0.8526401520f, 0.5224985480f}, + new float[] {-0.7804304361f, -0.6252426505f}, + new float[] {0.3239174187f, -0.9460853338f}, + new float[] {0.9998766184f, -0.0157073177f}, + new float[] {0.3534748554f, 0.9354440570f}, + new float[] {-0.7604059577f, 0.6494480371f}, + new float[] {-0.8686315417f, -0.4954586625f}, + new float[] {0.1719291061f, -0.9851093292f}, + new float[] {0.9851093292f, -0.1719291061f}, + new float[] {0.4954586625f, 0.8686315417f}, + new float[] {-0.6494480371f, 0.7604059577f}, + new float[] {-0.9354440570f, -0.3534748554f}, + new float[] {0.0157073177f, -0.9998766184f}, + new float[] {0.9460853338f, -0.3239174187f}, + new float[] {0.6252426505f, 0.7804304361f}, + new float[] {-0.5224985480f, 0.8526401520f}, + new float[] {-0.9792228341f, -0.2027872950f}, + new float[] {-0.1409012377f, -0.9900236726f}, + new float[] {0.8837656379f, -0.4679298103f}, + new float[] {0.7396311164f, 0.6730124950f}, + new float[] {-0.3826834261f, 0.9238795042f}, + new float[] {-0.9988898635f, -0.0471064523f}, + new float[] {-0.2940403223f, -0.9557930231f}, + new float[] {0.7996846437f, -0.6004202366f}, + new float[] {0.8358073831f, 0.5490227938f}, + new float[] {-0.2334453613f, 0.9723699093f}, + new float[] {-0.9939609766f, 0.1097343117f}, + new float[] {-0.4399391711f, -0.8980275989f}, + new float[] {0.6959127784f, -0.7181262970f}, + new float[] {0.9114032984f, 0.4115143716f}, + new float[] {-0.0784590989f, 0.9969173074f}, + new float[] {-0.9645574093f, 0.2638730407f}, + new float[] {-0.5750052333f, -0.8181497455f}, + new float[] {0.5750052333f, -0.8181497455f}, + new float[] {0.9645574093f, 0.2638730407f}, + new float[] {0.0784590989f, 0.9969173074f}, + new float[] {-0.9114032984f, 0.4115143716f}, + new float[] {-0.6959127784f, -0.7181262970f}, + new float[] {0.4399391711f, -0.8980275989f}, + new float[] {0.9939609766f, 0.1097343117f}, + new float[] {0.2334453613f, 0.9723699093f}, + new float[] {-0.8358073831f, 0.5490227938f}, + new float[] {-0.7996846437f, -0.6004202366f}, + new float[] {0.2940403223f, -0.9557930231f}, + new float[] {0.9988898635f, -0.0471064523f}, + new float[] {0.3826834261f, 0.9238795042f}, + new float[] {-0.7396311164f, 0.6730124950f} + }; + + /* RE(Phi_Fract_SubQmf20[j]) = (float)cos(M_PI*f_center_20[j]*0.39); */ + /* IM(Phi_Fract_SubQmf20[j]) = (float)sin(M_PI*f_center_20[j]*0.39); */ + public static float[][] Phi_Fract_SubQmf20 = + { + new float[] {0.9882950187f, 0.1525546312f}, + new float[] {0.8962930441f, 0.4434623122f}, + new float[] {0.7208535671f, 0.6930873394f}, + new float[] {0.4783087075f, 0.8781917691f}, + new float[] {1.0000000000f, 0.0000000000f}, + new float[] {1.0000000000f, 0.0000000000f}, + new float[] {0.8962930441f, -0.4434623122f}, + new float[] {0.9882950187f, -0.1525546312f}, + new float[] {-0.5424415469f, 0.8400935531f}, + new float[] {0.0392598175f, 0.9992290139f}, + new float[] {-0.9268565774f, 0.3754155636f}, + new float[] {-0.9741733670f, -0.2258012742f} + }; + + /* RE(Phi_Fract_SubQmf34[j]) = (float)cos(M_PI*f_center_34[j]*0.39); */ + /* IM(Phi_Fract_SubQmf34[j]) = (float)sin(M_PI*f_center_34[j]*0.39); */ + public static float[][] Phi_Fract_SubQmf34 = + { + new float[] {1.0000000000f, 0.0000000000f}, + new float[] {1.0000000000f, 0.0000000000f}, + new float[] {1.0000000000f, 0.0000000000f}, + new float[] {1.0000000000f, 0.0000000000f}, + new float[] {1.0000000000f, 0.0000000000f}, + new float[] {1.0000000000f, 0.0000000000f}, + new float[] {0.3387379348f, 0.9408807755f}, + new float[] {0.3387379348f, 0.9408807755f}, + new float[] {0.3387379348f, 0.9408807755f}, + new float[] {1.0000000000f, 0.0000000000f}, + new float[] {1.0000000000f, 0.0000000000f}, + new float[] {1.0000000000f, 0.0000000000f}, + new float[] {-0.7705132365f, 0.6374239922f}, + new float[] {-0.7705132365f, 0.6374239922f}, + new float[] {1.0000000000f, 0.0000000000f}, + new float[] {1.0000000000f, 0.0000000000f}, + new float[] {0.3387379348f, 0.9408807755f}, + new float[] {0.3387379348f, 0.9408807755f}, + new float[] {0.3387379348f, 0.9408807755f}, + new float[] {0.3387379348f, 0.9408807755f}, + new float[] {-0.7705132365f, 0.6374239922f}, + new float[] {-0.7705132365f, 0.6374239922f}, + new float[] {-0.8607420325f, -0.5090414286f}, + new float[] {0.3387379348f, 0.9408807755f}, + new float[] {0.1873813123f, -0.9822872281f}, + new float[] {-0.7705132365f, 0.6374239922f}, + new float[] {-0.8607420325f, -0.5090414286f}, + new float[] {-0.8607420325f, -0.5090414286f}, + new float[] {0.1873813123f, -0.9822872281f}, + new float[] {0.1873813123f, -0.9822872281f}, + new float[] {0.9876883626f, -0.1564344615f}, + new float[] {-0.8607420325f, -0.5090414286f} + }; + + /* RE(Q_Fract_allpass_Qmf[j][i]) = (float)cos(M_PI*(j+0.5)*(frac_delay_q[i])); */ + /* IM(Q_Fract_allpass_Qmf[j][i]) = (float)sin(M_PI*(j+0.5)*(frac_delay_q[i])); */ + public static float[][][] Q_Fract_allpass_Qmf = + { + new float[][] {new float[] {0.7804303765f, 0.6252426505f}, new float[] { 0.3826834261f, 0.9238795042f}, new float[] { 0.8550928831f, 0.5184748173f}}, + new float[][] {new float[] {-0.4399392009f, 0.8980275393f}, new float[] {-0.9238795042f, -0.3826834261f}, new float[] {-0.0643581524f, 0.9979268909f}}, + new float[][] {new float[] {-0.9723699093f, -0.2334454209f}, new float[] {0.9238795042f, -0.3826834261f}, new float[] {-0.9146071672f, 0.4043435752f}}, + new float[][] {new float[] {0.0157073960f, -0.9998766184f}, new float[] {-0.3826834261f, 0.9238795042f}, new float[] {-0.7814115286f, -0.6240159869f}}, + new float[][] {new float[] {0.9792228341f, -0.2027871907f}, new float[] {-0.3826834261f, -0.9238795042f}, new float[] {0.1920081824f, -0.9813933372f}}, + new float[][] {new float[] {0.4115142524f, 0.9114032984f}, new float[] {0.9238795042f, 0.3826834261f}, new float[] {0.9589683414f, -0.2835132182f}}, + new float[][] {new float[] {-0.7996847630f, 0.6004201174f}, new float[] {-0.9238795042f, 0.3826834261f}, new float[] {0.6947838664f, 0.7192186117f}}, + new float[][] {new float[] {-0.7604058385f, -0.6494481564f}, new float[] {0.3826834261f, -0.9238795042f}, new float[] {-0.3164770305f, 0.9486001730f}}, + new float[][] {new float[] {0.4679299891f, -0.8837655187f}, new float[] {0.3826834261f, 0.9238795042f}, new float[] {-0.9874414206f, 0.1579856575f}}, + new float[][] {new float[] {0.9645573497f, 0.2638732493f}, new float[] {-0.9238795042f, -0.3826834261f}, new float[] {-0.5966450572f, -0.8025052547f}}, + new float[][] {new float[] {-0.0471066870f, 0.9988898635f}, new float[] {0.9238795042f, -0.3826834261f}, new float[] {0.4357025325f, -0.9000906944f}}, + new float[][] {new float[] {-0.9851093888f, 0.1719288528f}, new float[] {-0.3826834261f, 0.9238795042f}, new float[] {0.9995546937f, -0.0298405960f}}, + new float[][] {new float[] {-0.3826831877f, -0.9238796234f}, new float[] {-0.3826834261f, -0.9238795042f}, new float[] {0.4886211455f, 0.8724960685f}}, + new float[][] {new float[] {0.8181498647f, -0.5750049949f}, new float[] {0.9238795042f, 0.3826834261f}, new float[] {-0.5477093458f, 0.8366686702f}}, + new float[][] {new float[] {0.7396308780f, 0.6730127335f}, new float[] {-0.9238795042f, 0.3826834261f}, new float[] {-0.9951074123f, -0.0987988561f}}, + new float[][] {new float[] {-0.4954589605f, 0.8686313629f}, new float[] {0.3826834261f, -0.9238795042f}, new float[] {-0.3725017905f, -0.9280315042f}}, + new float[][] {new float[] {-0.9557929039f, -0.2940406799f}, new float[] {0.3826834261f, 0.9238795042f}, new float[] {0.6506417990f, -0.7593847513f}}, + new float[][] {new float[] {0.0784594864f, -0.9969173074f}, new float[] {-0.9238795042f, -0.3826834261f}, new float[] {0.9741733670f, 0.2258014232f}}, + new float[][] {new float[] {0.9900237322f, -0.1409008205f}, new float[] {0.9238795042f, -0.3826834261f}, new float[] {0.2502108514f, 0.9681913853f}}, + new float[][] {new float[] {0.3534744382f, 0.9354441762f}, new float[] {-0.3826834261f, 0.9238795042f}, new float[] {-0.7427945137f, 0.6695194840f}}, + new float[][] {new float[] {-0.8358076215f, 0.5490224361f}, new float[] {-0.3826834261f, -0.9238795042f}, new float[] {-0.9370992780f, -0.3490629196f}}, + new float[][] {new float[] {-0.7181259394f, -0.6959131360f}, new float[] {0.9238795042f, 0.3826834261f}, new float[] {-0.1237744763f, -0.9923103452f}}, + new float[][] {new float[] {0.5224990249f, -0.8526399136f}, new float[] {-0.9238795042f, 0.3826834261f}, new float[] {0.8226406574f, -0.5685616732f}}, + new float[][] {new float[] {0.9460852146f, 0.3239179254f}, new float[] {0.3826834261f, -0.9238795042f}, new float[] {0.8844994903f, 0.4665412009f}}, + new float[][] {new float[] {-0.1097348556f, 0.9939609170f}, new float[] {0.3826834261f, 0.9238795042f}, new float[] {-0.0047125919f, 0.9999889135f}}, + new float[][] {new float[] {-0.9939610362f, 0.1097337380f}, new float[] {-0.9238795042f, -0.3826834261f}, new float[] {-0.8888573647f, 0.4581840038f}}, + new float[][] {new float[] {-0.3239168525f, -0.9460855722f}, new float[] {0.9238795042f, -0.3826834261f}, new float[] {-0.8172453642f, -0.5762898922f}}, + new float[][] {new float[] {0.8526405096f, -0.5224980116f}, new float[] {-0.3826834261f, 0.9238795042f}, new float[] {0.1331215799f, -0.9910997152f}}, + new float[][] {new float[] {0.6959123611f, 0.7181267142f}, new float[] {-0.3826834261f, -0.9238795042f}, new float[] {0.9403476119f, -0.3402152061f}}, + new float[][] {new float[] {-0.5490233898f, 0.8358070254f}, new float[] {0.9238795042f, 0.3826834261f}, new float[] {0.7364512086f, 0.6764906645f}}, + new float[][] {new float[] {-0.9354437590f, -0.3534754813f}, new float[] {-0.9238795042f, 0.3826834261f}, new float[] {-0.2593250275f, 0.9657900929f}}, + new float[][] {new float[] {0.1409019381f, -0.9900235534f}, new float[] {0.3826834261f, -0.9238795042f}, new float[] {-0.9762582779f, 0.2166097313f}}, + new float[][] {new float[] {0.9969173670f, -0.0784583688f}, new float[] {0.3826834261f, 0.9238795042f}, new float[] {-0.6434556246f, -0.7654833794f}}, + new float[][] {new float[] {0.2940396070f, 0.9557932615f}, new float[] {-0.9238795042f, -0.3826834261f}, new float[] {0.3812320232f, -0.9244794250f}}, + new float[][] {new float[] {-0.8686318994f, 0.4954580069f}, new float[] {0.9238795042f, -0.3826834261f}, new float[] {0.9959943891f, -0.0894154981f}}, + new float[][] {new float[] {-0.6730118990f, -0.7396316528f}, new float[] {-0.3826834261f, 0.9238795042f}, new float[] {0.5397993922f, 0.8417937160f}}, + new float[][] {new float[] {0.5750059485f, -0.8181492686f}, new float[] {-0.3826834261f, -0.9238795042f}, new float[] {-0.4968227744f, 0.8678520322f}}, + new float[][] {new float[] {0.9238792062f, 0.3826842010f}, new float[] {0.9238795042f, 0.3826834261f}, new float[] {-0.9992290139f, -0.0392601527f}}, + new float[][] {new float[] {-0.1719299555f, 0.9851091504f}, new float[] {-0.9238795042f, 0.3826834261f}, new float[] {-0.4271997511f, -0.9041572809f}}, + new float[][] {new float[] {-0.9988899231f, 0.0471055657f}, new float[] {0.3826834261f, -0.9238795042f}, new float[] {0.6041822433f, -0.7968461514f}}, + new float[][] {new float[] {-0.2638721764f, -0.9645576477f}, new float[] {0.3826834261f, 0.9238795042f}, new float[] {0.9859085083f, 0.1672853529f}}, + new float[][] {new float[] {0.8837660551f, -0.4679289758f}, new float[] {-0.9238795042f, -0.3826834261f}, new float[] {0.3075223565f, 0.9515408874f}}, + new float[][] {new float[] {0.6494473219f, 0.7604066133f}, new float[] {0.9238795042f, -0.3826834261f}, new float[] {-0.7015317082f, 0.7126382589f}}, + new float[][] {new float[] {-0.6004210114f, 0.7996840477f}, new float[] {-0.3826834261f, 0.9238795042f}, new float[] {-0.9562535882f, -0.2925389707f}}, + new float[][] {new float[] {-0.9114028811f, -0.4115152657f}, new float[] {-0.3826834261f, -0.9238795042f}, new float[] {-0.1827499419f, -0.9831594229f}}, + new float[][] {new float[] {0.2027882934f, -0.9792225957f}, new float[] {0.9238795042f, 0.3826834261f}, new float[] {0.7872582674f, -0.6166234016f}}, + new float[][] {new float[] {0.9998766780f, -0.0157062728f}, new float[] {-0.9238795042f, 0.3826834261f}, new float[] {0.9107555747f, 0.4129458666f}}, + new float[][] {new float[] {0.2334443331f, 0.9723701477f}, new float[] {0.3826834261f, -0.9238795042f}, new float[] {0.0549497530f, 0.9984891415f}}, + new float[][] {new float[] {-0.8980280757f, 0.4399381876f}, new float[] {0.3826834261f, 0.9238795042f}, new float[] {-0.8599416018f, 0.5103924870f}}, + new float[][] {new float[] {-0.6252418160f, -0.7804310918f}, new float[] {-0.9238795042f, -0.3826834261f}, new float[] {-0.8501682281f, -0.5265110731f}}, + new float[][] {new float[] {0.6252435446f, -0.7804297209f}, new float[] {0.9238795042f, -0.3826834261f}, new float[] {0.0737608299f, -0.9972759485f}}, + new float[][] {new float[] {0.8980270624f, 0.4399402142f}, new float[] {-0.3826834261f, 0.9238795042f}, new float[] {0.9183775187f, -0.3957053721f}}, + new float[][] {new float[] {-0.2334465086f, 0.9723696709f}, new float[] {-0.3826834261f, -0.9238795042f}, new float[] {0.7754954696f, 0.6313531399f}}, + new float[][] {new float[] {-0.9998766184f, -0.0157085191f}, new float[] {0.9238795042f, 0.3826834261f}, new float[] {-0.2012493610f, 0.9795400500f}}, + new float[][] {new float[] {-0.2027861029f, -0.9792230725f}, new float[] {-0.9238795042f, 0.3826834261f}, new float[] {-0.9615978599f, 0.2744622827f}}, + new float[][] {new float[] {0.9114037752f, -0.4115132093f}, new float[] {0.3826834261f, -0.9238795042f}, new float[] {-0.6879743338f, -0.7257350087f}}, + new float[][] {new float[] {0.6004192233f, 0.7996854186f}, new float[] {0.3826834261f, 0.9238795042f}, new float[] {0.3254036009f, -0.9455752373f}}, + new float[][] {new float[] {-0.6494490504f, 0.7604051232f}, new float[] {-0.9238795042f, -0.3826834261f}, new float[] {0.9888865948f, -0.1486719251f}}, + new float[][] {new float[] {-0.8837650418f, -0.4679309726f}, new float[] {0.9238795042f, -0.3826834261f}, new float[] {0.5890548825f, 0.8080930114f}}, + new float[][] {new float[] {0.2638743520f, -0.9645570517f}, new float[] {-0.3826834261f, 0.9238795042f}, new float[] {-0.4441666007f, 0.8959442377f}}, + new float[][] {new float[] {0.9988898039f, 0.0471078083f}, new float[] {-0.3826834261f, -0.9238795042f}, new float[] {-0.9997915030f, 0.0204183888f}}, + new float[][] {new float[] {0.1719277352f, 0.9851095676f}, new float[] {0.9238795042f, 0.3826834261f}, new float[] {-0.4803760946f, -0.8770626187f}}, + new float[][] {new float[] {-0.9238800406f, 0.3826821446f}, new float[] {-0.9238795042f, 0.3826834261f}, new float[] {0.5555707216f, -0.8314692974f}}, + new float[][] {new float[] { -0.5750041008f, -0.8181505203f},new float[] {0.3826834261f, -0.9238795042f}, new float[] {0.9941320419f, 0.1081734300f}} + }; + + /* RE(Q_Fract_allpass_SubQmf20[j][i]) = (float)cos(M_PI*f_center_20[j]*frac_delay_q[i]); */ + /* IM(Q_Fract_allpass_SubQmf20[j][i]) = (float)sin(M_PI*f_center_20[j]*frac_delay_q[i]); */ + public static float[][][] Q_Fract_allpass_SubQmf20 = + { + new float[][] { new float[] {0.9857769012f, 0.1680592746f}, new float[] {0.9569403529f, 0.2902846634f}, new float[] {0.9907300472f, 0.1358452588f}}, + new float[][] { new float[] {0.8744080663f, 0.4851911962f}, new float[] {0.6343932748f, 0.7730104327f}, new float[] {0.9175986052f, 0.3975082636f}}, + new float[][] { new float[] {0.6642524004f, 0.7475083470f}, new float[] {0.0980171412f, 0.9951847196f}, new float[] {0.7767338753f, 0.6298289299f}}, + new float[][] { new float[] {0.3790524006f, 0.9253752232f}, new float[] {-0.4713967443f, 0.8819212914f}, new float[] {0.5785340071f, 0.8156582713f}}, + new float[][] { new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}}, + new float[][] { new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}}, + new float[][] { new float[] {0.8744080663f, -0.4851911962f}, new float[] {0.6343932748f, -0.7730104327f}, new float[] {0.9175986052f, -0.3975082636f}}, + new float[][] { new float[] {0.9857769012f, -0.1680592746f}, new float[] {0.9569403529f, -0.2902846634f}, new float[] {0.9907300472f, -0.1358452588f}}, + new float[][] { new float[] {-0.7126385570f, 0.7015314102f}, new float[] {-0.5555702448f, -0.8314695954f},new float[] {-0.3305967748f, 0.9437720776f}}, + new float[][] { new float[] {-0.1175374240f, 0.9930684566f}, new float[] {-0.9807852507f, 0.1950903237f}, new float[] {0.2066311091f, 0.9784189463f}}, + new float[][] { new float[] {-0.9947921634f, 0.1019244045f}, new float[] {0.5555702448f, -0.8314695954f}, new float[] {-0.7720130086f, 0.6356067061f}}, + new float[][] { new float[] { -0.8400934935f, -0.5424416065f}, new float[] { 0.9807852507f, 0.1950903237f}, new float[] { -0.9896889329f, 0.1432335079f}} + }; + + /* RE(Q_Fract_allpass_SubQmf34[j][i]) = (float)cos(M_PI*f_center_34[j]*frac_delay_q[i]); */ + /* IM(Q_Fract_allpass_SubQmf34[j][i]) = (float)sin(M_PI*f_center_34[j]*frac_delay_q[i]); */ + public static float[][][] Q_Fract_allpass_SubQmf34 = + { + new float[][] { new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}}, + new float[][] { new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}}, + new float[][] { new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}}, + new float[][] { new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}}, + new float[][] { new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}}, + new float[][] { new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}}, + new float[][] { new float[] {0.2181432247f, 0.9759167433f}, new float[] {-0.7071067691f, 0.7071067691f}, new float[] {0.4623677433f, 0.8866882324f}}, + new float[][] { new float[] {0.2181432247f, 0.9759167433f}, new float[] {-0.7071067691f, 0.7071067691f}, new float[] {0.4623677433f, 0.8866882324f}}, + new float[][] { new float[] {0.2181432247f, 0.9759167433f}, new float[] {-0.7071067691f, 0.7071067691f}, new float[] {0.4623677433f, 0.8866882324f}}, + new float[][] { new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}}, + new float[][] { new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}}, + new float[][] { new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}}, + new float[][] { new float[] {-0.9048270583f, 0.4257792532f}, new float[] {-0.0000000000f, -1.0000000000f}, new float[] {-0.5724321604f, 0.8199520707f}}, + new float[][] { new float[] {-0.9048270583f, 0.4257792532f}, new float[] {-0.0000000000f, -1.0000000000f}, new float[] {-0.5724321604f, 0.8199520707f}}, + new float[][] { new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}}, + new float[][] { new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}, new float[] {1.0000000000f, 0.0000000000f}}, + new float[][] { new float[] {0.2181432247f, 0.9759167433f}, new float[] {-0.7071067691f, 0.7071067691f}, new float[] {0.4623677433f, 0.8866882324f}}, + new float[][] { new float[] {0.2181432247f, 0.9759167433f}, new float[] {-0.7071067691f, 0.7071067691f}, new float[] {0.4623677433f, 0.8866882324f}}, + new float[][] { new float[] {0.2181432247f, 0.9759167433f}, new float[] {-0.7071067691f, 0.7071067691f}, new float[] {0.4623677433f, 0.8866882324f}}, + new float[][] { new float[] {0.2181432247f, 0.9759167433f}, new float[] {-0.7071067691f, 0.7071067691f}, new float[] {0.4623677433f, 0.8866882324f}}, + new float[][] { new float[] {-0.9048270583f, 0.4257792532f}, new float[] {-0.0000000000f, -1.0000000000f}, new float[] {-0.5724321604f, 0.8199520707f}}, + new float[][] { new float[] {-0.9048270583f, 0.4257792532f}, new float[] {-0.0000000000f, -1.0000000000f}, new float[] {-0.5724321604f, 0.8199520707f}}, + new float[][] { new float[] {-0.6129069924f, -0.7901550531f},new float[] {0.7071067691f, 0.7071067691f}, new float[] {-0.9917160273f, -0.1284494549f}}, + new float[][] { new float[] {0.2181432247f, 0.9759167433f}, new float[] {-0.7071067691f, 0.7071067691f}, new float[] {0.4623677433f, 0.8866882324f}}, + new float[][] { new float[] {0.6374240518f, -0.7705131769f}, new float[] {-1.0000000000f, 0.0000000000f}, new float[] {-0.3446428776f, -0.9387338758f}}, + new float[][] { new float[] {-0.9048270583f, 0.4257792532f}, new float[] {-0.0000000000f, -1.0000000000f}, new float[] {-0.5724321604f, 0.8199520707f}}, + new float[][] { new float[] {-0.6129069924f, -0.7901550531f},new float[] {0.7071067691f, 0.7071067691f}, new float[] {-0.9917160273f, -0.1284494549f}}, + new float[][] { new float[] {-0.6129069924f, -0.7901550531f},new float[] {0.7071067691f, 0.7071067691f}, new float[] {-0.9917160273f, -0.1284494549f}}, + new float[][] { new float[] {0.6374240518f, -0.7705131769f}, new float[] {-1.0000000000f, 0.0000000000f}, new float[] {-0.3446428776f, -0.9387338758f}}, + new float[][] { new float[] {0.6374240518f, -0.7705131769f}, new float[] {-1.0000000000f, 0.0000000000f}, new float[] {-0.3446428776f, -0.9387338758f}}, + new float[][] { new float[] {0.8910064697f, 0.4539906085f}, new float[] {0.7071067691f, -0.7071067691f}, new float[] {0.6730125546f, -0.7396310568f}}, + new float[][] { new float[] {-0.6129069924f, -0.7901550531f},new float[] {0.7071067691f, 0.7071067691f}, new float[] {-0.9917160273f, -0.1284494549f}} + }; + + public static float[] cos_alphas = + { + 1.0000000000f, 0.9841239700f, 0.9594738210f, + 0.8946843079f, 0.8269340931f, 0.7071067812f, + 0.4533210856f, 0.0000000000f + }; + + public static float[] sin_alphas = + { + 0.0000000000f, 0.1774824264f, 0.2817977763f, + 0.4466989918f, 0.5622988580f, 0.7071067812f, + 0.8913472911f, 1.0000000000f + }; + + public static float[][] cos_betas_normal = + { + new float[] {1.0000000000f, 1.0000000000f, 1.0000000000f, 1.0000000000f, 1.0000000000f, 1.0000000000f, 1.0000000000f, 1.0000000000f}, + new float[] {1.0000000000f, 0.9995871699f, 0.9989419133f, 0.9972204583f, 0.9953790839f, 0.9920112747f, 0.9843408180f, 0.9681727381f}, + new float[] {1.0000000000f, 0.9984497744f, 0.9960279377f, 0.9895738413f, 0.9826814632f, 0.9701058164f, 0.9416098832f, 0.8822105900f}, + new float[] {1.0000000000f, 0.9959398908f, 0.9896038018f, 0.9727589768f, 0.9548355329f, 0.9223070404f, 0.8494349490f, 0.7013005535f}, + new float[] {1.0000000000f, 0.9932417400f, 0.9827071856f, 0.9547730996f, 0.9251668930f, 0.8717461589f, 0.7535520592f, 0.5198827312f}, + new float[] {1.0000000000f, 0.9902068095f, 0.9749613872f, 0.9346538534f, 0.8921231300f, 0.8158851259f, 0.6495964302f, 0.3313370772f}, + new float[] {1.0000000000f, 0.9880510933f, 0.9694670261f, 0.9204347876f, 0.8688622825f, 0.7768516704f, 0.5782161800f, 0.2069970356f}, + new float[] {1.0000000000f, 0.9858996945f, 0.9639898866f, 0.9063034786f, 0.8458214608f, 0.7384262300f, 0.5089811277f, 0.0905465944f} + }; + + public static float[][] sin_betas_normal = + { + new float[] {0.0000000000f, 0.0000000000f, 0.0000000000f, 0.0000000000f, 0.0000000000f, 0.0000000000f, 0.0000000000f, 0.0000000000f}, + new float[] {0.0000000000f, -0.0287313368f, -0.0459897147f, -0.0745074328f, -0.0960233266f, -0.1261492408f, -0.1762757894f, -0.2502829383f}, + new float[] {0.0000000000f, -0.0556601118f, -0.0890412670f, -0.1440264301f, -0.1853028382f, -0.2426823129f, -0.3367058477f, -0.4708550466f}, + new float[] {0.0000000000f, -0.0900207420f, -0.1438204281f, -0.2318188366f, -0.2971348264f, -0.3864579191f, -0.5276933461f, -0.7128657193f}, + new float[] {0.0000000000f, -0.1160639735f, -0.1851663774f, -0.2973353800f, -0.3795605619f, -0.4899577884f, -0.6573882369f, -0.8542376401f}, + new float[] {0.0000000000f, -0.1396082894f, -0.2223742196f, -0.3555589603f, -0.4517923427f, -0.5782140273f, -0.7602792104f, -0.9435124489f}, + new float[] {0.0000000000f, -0.1541266914f, -0.2452217065f, -0.3908961522f, -0.4950538699f, -0.6296836366f, -0.8158836002f, -0.9783415698f}, + new float[] {0.0000000000f, -0.1673373610f, -0.2659389001f, -0.4226275012f, -0.5334660781f, -0.6743342664f, -0.8607776784f, -0.9958922202f} + }; + + public static float[][] cos_betas_fine = + { + new float[] {1.0000000000f, 1.0000000000f, 1.0000000000f, 1.0000000000f, 1.0000000000f, 1.0000000000f, 1.0000000000f, 1.0000000000f}, + new float[] {1.0000000000f, 0.9995871699f, 0.9989419133f, 0.9972204583f, 0.9953790839f, 0.9920112747f, 0.9843408180f, 0.9681727381f}, + new float[] {1.0000000000f, 0.9984497744f, 0.9960279377f, 0.9895738413f, 0.9826814632f, 0.9701058164f, 0.9416098832f, 0.8822105900f}, + new float[] {1.0000000000f, 0.9968361371f, 0.9918968104f, 0.9787540479f, 0.9647515190f, 0.9392903010f, 0.8820167114f, 0.7645325390f}, + new float[] {1.0000000000f, 0.9950262915f, 0.9872675041f, 0.9666584578f, 0.9447588606f, 0.9050918405f, 0.8165997379f, 0.6383824796f}, + new float[] {1.0000000000f, 0.9932417400f, 0.9827071856f, 0.9547730996f, 0.9251668930f, 0.8717461589f, 0.7535520592f, 0.5198827312f}, + new float[] {1.0000000000f, 0.9908827998f, 0.9766855904f, 0.9391249214f, 0.8994531782f, 0.8282352693f, 0.6723983174f, 0.3719473225f}, + new float[] {1.0000000000f, 0.9890240165f, 0.9719459866f, 0.9268448110f, 0.8793388536f, 0.7944023271f, 0.6101812098f, 0.2621501145f}, + new float[] {1.0000000000f, 0.9876350461f, 0.9684073447f, 0.9176973944f, 0.8643930070f, 0.7693796058f, 0.5646720713f, 0.1838899556f}, + new float[] {1.0000000000f, 0.9866247085f, 0.9658349704f, 0.9110590761f, 0.8535668048f, 0.7513165426f, 0.5320914819f, 0.1289530943f}, + new float[] {1.0000000000f, 0.9858996945f, 0.9639898866f, 0.9063034786f, 0.8458214608f, 0.7384262300f, 0.5089811277f, 0.0905465944f}, + new float[] {1.0000000000f, 0.9851245614f, 0.9620180268f, 0.9012265590f, 0.8375623272f, 0.7247108045f, 0.4845204297f, 0.0504115003f}, + new float[] {1.0000000000f, 0.9846869856f, 0.9609052357f, 0.8983639533f, 0.8329098386f, 0.7169983441f, 0.4708245354f, 0.0281732509f}, + new float[] {1.0000000000f, 0.9844406325f, 0.9602788522f, 0.8967533934f, 0.8302936455f, 0.7126658102f, 0.4631492839f, 0.0157851140f}, + new float[] {1.0000000000f, 0.9843020502f, 0.9599265269f, 0.8958477331f, 0.8288229094f, 0.7102315840f, 0.4588429315f, 0.0088578059f}, + new float[] {1.0000000000f, 0.9842241136f, 0.9597283916f, 0.8953385094f, 0.8279961409f, 0.7088635748f, 0.4564246834f, 0.0049751355f} + }; + + public static float[][] sin_betas_fine = + { + new float[] {0.0000000000f, 0.0000000000f, 0.0000000000f, 0.0000000000f, 0.0000000000f, 0.0000000000f, 0.0000000000f, 0.0000000000f}, + new float[] {0.0000000000f, -0.0287313368f, -0.0459897147f, -0.0745074328f, -0.0960233266f, -0.1261492408f, -0.1762757894f, -0.2502829383f}, + new float[] {0.0000000000f, -0.0556601118f, -0.0890412670f, -0.1440264301f, -0.1853028382f, -0.2426823129f, -0.3367058477f, -0.4708550466f}, + new float[] {0.0000000000f, -0.0794840594f, -0.1270461238f, -0.2050378347f, -0.2631625097f, -0.3431234916f, -0.4712181245f, -0.6445851354f}, + new float[] {0.0000000000f, -0.0996126459f, -0.1590687758f, -0.2560691819f, -0.3277662204f, -0.4252161335f, -0.5772043556f, -0.7697193058f}, + new float[] {0.0000000000f, -0.1160639735f, -0.1851663774f, -0.2973353800f, -0.3795605619f, -0.4899577884f, -0.6573882369f, -0.8542376401f}, + new float[] {0.0000000000f, -0.1347266752f, -0.2146747714f, -0.3435758752f, -0.4370171396f, -0.5603805303f, -0.7401895046f, -0.9282538388f}, + new float[] {0.0000000000f, -0.1477548470f, -0.2352041647f, -0.3754446647f, -0.4761965776f, -0.6073919186f, -0.7922618830f, -0.9650271071f}, + new float[] {0.0000000000f, -0.1567705832f, -0.2493736450f, -0.3972801182f, -0.5028167951f, -0.6387918458f, -0.8253153651f, -0.9829468369f}, + new float[] {0.0000000000f, -0.1630082348f, -0.2591578860f, -0.4122758299f, -0.5209834064f, -0.6599420072f, -0.8466868694f, -0.9916506943f}, + new float[] {0.0000000000f, -0.1673373610f, -0.2659389001f, -0.4226275012f, -0.5334660781f, -0.6743342664f, -0.8607776784f, -0.9958922202f}, + new float[] {0.0000000000f, -0.1718417832f, -0.2729859267f, -0.4333482310f, -0.5463417868f, -0.6890531546f, -0.8747799456f, -0.9987285320f}, + new float[] {0.0000000000f, -0.1743316967f, -0.2768774604f, -0.4392518725f, -0.5534087104f, -0.6970748701f, -0.8822268738f, -0.9996030552f}, + new float[] {0.0000000000f, -0.1757175038f, -0.2790421580f, -0.4425306221f, -0.5573261722f, -0.7015037013f, -0.8862802834f, -0.9998754073f}, + new float[] {0.0000000000f, -0.1764921355f, -0.2802517850f, -0.4443611583f, -0.5595110229f, -0.7039681080f, -0.8885173967f, -0.9999607689f}, + new float[] {0.0000000000f, -0.1769262394f, -0.2809295540f, -0.4453862969f, -0.5607337966f, -0.7053456119f, -0.8897620516f, -0.9999876239f} + }; + + public static float[][] sincos_alphas_B_normal = + { + new float[] {0.0561454100f, 0.0526385859f, 0.0472937334f, 0.0338410641f, 0.0207261065f, 0.0028205635f, 0.0028205635f, 0.0028205635f}, + new float[] {0.1249065138f, 0.1173697697f, 0.1057888284f, 0.0761985131f, 0.0468732723f, 0.0063956103f, 0.0063956103f, 0.0063956103f}, + new float[] {0.1956693050f, 0.1846090179f, 0.1673645109f, 0.1220621836f, 0.0757362479f, 0.0103882630f, 0.0103882630f, 0.0103882630f}, + new float[] {0.3015113269f, 0.2870525790f, 0.2637738799f, 0.1984573949f, 0.1260749909f, 0.0175600126f, 0.0175600126f, 0.0175600126f}, + new float[] {0.4078449476f, 0.3929852420f, 0.3680589270f, 0.2911029124f, 0.1934512363f, 0.0278686716f, 0.0278686716f, 0.0278686716f}, + new float[] {0.5336171261f, 0.5226637762f, 0.5033652606f, 0.4349162672f, 0.3224682122f, 0.0521999036f, 0.0521999036f, 0.0521999036f}, + new float[] {0.6219832023f, 0.6161847276f, 0.6057251063f, 0.5654342668f, 0.4826149915f, 0.1058044758f, 0.1058044758f, 0.1058044758f}, + new float[] {0.7071067657f, 0.7071067657f, 0.7071067657f, 0.7071067657f, 0.7071067657f, 0.7071067657f, 0.7071067657f, 0.7071067657f}, + new float[] {0.7830305572f, 0.7876016373f, 0.7956739618f, 0.8247933372f, 0.8758325942f, 0.9943869542f, 0.9943869542f, 0.9943869542f}, + new float[] {0.8457261833f, 0.8525388778f, 0.8640737401f, 0.9004708933f, 0.9465802987f, 0.9986366532f, 0.9986366532f, 0.9986366532f}, + new float[] {0.9130511848f, 0.9195447612f, 0.9298024282f, 0.9566917233f, 0.9811098801f, 0.9996115928f, 0.9996115928f, 0.9996115928f}, + new float[] {0.9534625907f, 0.9579148236f, 0.9645845234f, 0.9801095128f, 0.9920207064f, 0.9998458099f, 0.9998458099f, 0.9998458099f}, + new float[] {0.9806699215f, 0.9828120260f, 0.9858950861f, 0.9925224431f, 0.9971278825f, 0.9999460406f, 0.9999460406f, 0.9999460406f}, + new float[] {0.9921685024f, 0.9930882705f, 0.9943886135f, 0.9970926648f, 0.9989008403f, 0.9999795479f, 0.9999795479f, 0.9999795479f}, + new float[] {0.9984226014f, 0.9986136287f, 0.9988810254f, 0.9994272242f, 0.9997851906f, 0.9999960221f, 0.9999960221f, 0.9999960221f} + }; + + public static float[][] sincos_alphas_B_fine = + { + new float[] {0.0031622158f, 0.0029630181f, 0.0026599892f, 0.0019002704f, 0.0011626042f, 0.0001580278f, 0.0001580278f, 0.0001580278f}, + new float[] {0.0056232673f, 0.0052689825f, 0.0047302825f, 0.0033791756f, 0.0020674015f, 0.0002811710f, 0.0002811710f, 0.0002811710f}, + new float[] {0.0099994225f, 0.0093696693f, 0.0084117414f, 0.0060093796f, 0.0036766009f, 0.0005000392f, 0.0005000392f, 0.0005000392f}, + new float[] {0.0177799194f, 0.0166607102f, 0.0149581377f, 0.0106875809f, 0.0065392545f, 0.0008893767f, 0.0008893767f, 0.0008893767f}, + new float[] {0.0316069684f, 0.0296211579f, 0.0265987295f, 0.0190113813f, 0.0116349973f, 0.0015826974f, 0.0015826974f, 0.0015826974f}, + new float[] {0.0561454100f, 0.0526385859f, 0.0472937334f, 0.0338410641f, 0.0207261065f, 0.0028205635f, 0.0028205635f, 0.0028205635f}, + new float[] {0.0791834041f, 0.0742798103f, 0.0667907269f, 0.0478705292f, 0.0293500747f, 0.0039966755f, 0.0039966755f, 0.0039966755f}, + new float[] {0.1115021177f, 0.1047141985f, 0.0943053154f, 0.0678120561f, 0.0416669150f, 0.0056813213f, 0.0056813213f, 0.0056813213f}, + new float[] {0.1565355066f, 0.1473258371f, 0.1330924027f, 0.0963282233f, 0.0594509113f, 0.0081277946f, 0.0081277946f, 0.0081277946f}, + new float[] {0.2184643682f, 0.2064579524f, 0.1876265439f, 0.1375744167f, 0.0856896681f, 0.0117817338f, 0.0117817338f, 0.0117817338f}, + new float[] {0.3015113269f, 0.2870525790f, 0.2637738799f, 0.1984573949f, 0.1260749909f, 0.0175600126f, 0.0175600126f, 0.0175600126f}, + new float[] {0.3698741335f, 0.3547727297f, 0.3298252076f, 0.2556265829f, 0.1665990017f, 0.0236344541f, 0.0236344541f, 0.0236344541f}, + new float[] {0.4480623975f, 0.4339410024f, 0.4098613774f, 0.3322709108f, 0.2266784729f, 0.0334094131f, 0.0334094131f, 0.0334094131f}, + new float[] {0.5336171261f, 0.5226637762f, 0.5033652606f, 0.4349162672f, 0.3224682122f, 0.0521999036f, 0.0521999036f, 0.0521999036f}, + new float[] {0.6219832023f, 0.6161847276f, 0.6057251063f, 0.5654342668f, 0.4826149915f, 0.1058044758f, 0.1058044758f, 0.1058044758f}, + new float[] {0.7071067657f, 0.7071067657f, 0.7071067657f, 0.7071067657f, 0.7071067657f, 0.7071067657f, 0.7071067657f, 0.7071067657f}, + new float[] {0.7830305572f, 0.7876016373f, 0.7956739618f, 0.8247933372f, 0.8758325942f, 0.9943869542f, 0.9943869542f, 0.9943869542f}, + new float[] {0.8457261833f, 0.8525388778f, 0.8640737401f, 0.9004708933f, 0.9465802987f, 0.9986366532f, 0.9986366532f, 0.9986366532f}, + new float[] {0.8940022267f, 0.9009412572f, 0.9121477564f, 0.9431839770f, 0.9739696219f, 0.9994417480f, 0.9994417480f, 0.9994417480f}, + new float[] {0.9290818561f, 0.9349525662f, 0.9440420138f, 0.9667755833f, 0.9860247275f, 0.9997206664f, 0.9997206664f, 0.9997206664f}, + new float[] {0.9534625907f, 0.9579148236f, 0.9645845234f, 0.9801095128f, 0.9920207064f, 0.9998458099f, 0.9998458099f, 0.9998458099f}, + new float[] {0.9758449068f, 0.9784554646f, 0.9822404252f, 0.9904914275f, 0.9963218730f, 0.9999305926f, 0.9999305926f, 0.9999305926f}, + new float[] {0.9876723320f, 0.9890880155f, 0.9911036356f, 0.9953496173f, 0.9982312259f, 0.9999669685f, 0.9999669685f, 0.9999669685f}, + new float[] {0.9937641889f, 0.9945023501f, 0.9955433130f, 0.9976981117f, 0.9991315558f, 0.9999838610f, 0.9999838610f, 0.9999838610f}, + new float[] {0.9968600642f, 0.9972374385f, 0.9977670024f, 0.9988535464f, 0.9995691924f, 0.9999920129f, 0.9999920129f, 0.9999920129f}, + new float[] {0.9984226014f, 0.9986136287f, 0.9988810254f, 0.9994272242f, 0.9997851906f, 0.9999960221f, 0.9999960221f, 0.9999960221f}, + new float[] {0.9995003746f, 0.9995611974f, 0.9996461891f, 0.9998192657f, 0.9999323103f, 0.9999987475f, 0.9999987475f, 0.9999987475f}, + new float[] {0.9998419236f, 0.9998611991f, 0.9998881193f, 0.9999428861f, 0.9999786185f, 0.9999996045f, 0.9999996045f, 0.9999996045f}, + new float[] {0.9999500038f, 0.9999561034f, 0.9999646206f, 0.9999819429f, 0.9999932409f, 0.9999998750f, 0.9999998750f, 0.9999998750f}, + new float[] {0.9999841890f, 0.9999861183f, 0.9999888121f, 0.9999942902f, 0.9999978628f, 0.9999999605f, 0.9999999605f, 0.9999999605f}, + new float[] {0.9999950000f, 0.9999956102f, 0.9999964621f, 0.9999981945f, 0.9999993242f, 0.9999999875f, 0.9999999875f, 0.9999999875f} + }; + + public static float[][] cos_gammas_normal = + { + new float[] {1.0000000000f, 0.9841239707f, 0.9594738226f, 0.8946843024f, 0.8269341029f, 0.7245688486f, 0.7245688486f, 0.7245688486f}, + new float[] {1.0000000000f, 0.9849690570f, 0.9617776789f, 0.9020941550f, 0.8436830391f, 0.7846832804f, 0.7846832804f, 0.7846832804f}, + new float[] {1.0000000000f, 0.9871656089f, 0.9676774734f, 0.9199102884f, 0.8785067015f, 0.8464232214f, 0.8464232214f, 0.8464232214f}, + new float[] {1.0000000000f, 0.9913533967f, 0.9786000177f, 0.9496063381f, 0.9277157252f, 0.9133354077f, 0.9133354077f, 0.9133354077f}, + new float[] {1.0000000000f, 0.9948924435f, 0.9875319180f, 0.9716329849f, 0.9604805241f, 0.9535949574f, 0.9535949574f, 0.9535949574f}, + new float[] {1.0000000000f, 0.9977406278f, 0.9945423840f, 0.9878736667f, 0.9833980494f, 0.9807207440f, 0.9807207440f, 0.9807207440f}, + new float[] {1.0000000000f, 0.9990607067f, 0.9977417734f, 0.9950323970f, 0.9932453273f, 0.9921884740f, 0.9921884740f, 0.9921884740f}, + new float[] {1.0000000000f, 0.9998081748f, 0.9995400312f, 0.9989936459f, 0.9986365356f, 0.9984265591f, 0.9984265591f, 0.9984265591f} + }; + + public static float[][] cos_gammas_fine = + { + new float[] {1.0000000000f, 0.9841239707f, 0.9594738226f, 0.8946843024f, 0.8269341029f, 0.7245688486f, 0.7245688486f, 0.7245688486f}, + new float[] {1.0000000000f, 0.9849690570f, 0.9617776789f, 0.9020941550f, 0.8436830391f, 0.7846832804f, 0.7846832804f, 0.7846832804f}, + new float[] {1.0000000000f, 0.9871656089f, 0.9676774734f, 0.9199102884f, 0.8785067015f, 0.8464232214f, 0.8464232214f, 0.8464232214f}, + new float[] {1.0000000000f, 0.9899597309f, 0.9750098690f, 0.9402333855f, 0.9129698759f, 0.8943765944f, 0.8943765944f, 0.8943765944f}, + new float[] {1.0000000000f, 0.9926607607f, 0.9819295710f, 0.9580160104f, 0.9404993670f, 0.9293004472f, 0.9293004472f, 0.9293004472f}, + new float[] {1.0000000000f, 0.9948924435f, 0.9875319180f, 0.9716329849f, 0.9604805241f, 0.9535949574f, 0.9535949574f, 0.9535949574f}, + new float[] {1.0000000000f, 0.9972074644f, 0.9932414270f, 0.9849197629f, 0.9792926592f, 0.9759092525f, 0.9759092525f, 0.9759092525f}, + new float[] {1.0000000000f, 0.9985361982f, 0.9964742028f, 0.9922136306f, 0.9893845420f, 0.9877041371f, 0.9877041371f, 0.9877041371f}, + new float[] {1.0000000000f, 0.9992494366f, 0.9981967170f, 0.9960386625f, 0.9946185834f, 0.9937800239f, 0.9937800239f, 0.9937800239f}, + new float[] {1.0000000000f, 0.9996194722f, 0.9990869422f, 0.9979996269f, 0.9972873651f, 0.9968679747f, 0.9968679747f, 0.9968679747f}, + new float[] {1.0000000000f, 0.9998081748f, 0.9995400312f, 0.9989936459f, 0.9986365356f, 0.9984265591f, 0.9984265591f, 0.9984265591f}, + new float[] {1.0000000000f, 0.9999390971f, 0.9998540271f, 0.9996809352f, 0.9995679735f, 0.9995016284f, 0.9995016284f, 0.9995016284f}, + new float[] {1.0000000000f, 0.9999807170f, 0.9999537862f, 0.9998990191f, 0.9998632947f, 0.9998423208f, 0.9998423208f, 0.9998423208f}, + new float[] {1.0000000000f, 0.9999938979f, 0.9999853814f, 0.9999680568f, 0.9999567596f, 0.9999501270f, 0.9999501270f, 0.9999501270f}, + new float[] {1.0000000000f, 0.9999980703f, 0.9999953731f, 0.9999898968f, 0.9999863277f, 0.9999842265f, 0.9999842265f, 0.9999842265f}, + new float[] {1.0000000000f, 0.9999993891f, 0.9999985397f, 0.9999968037f, 0.9999956786f, 0.9999950155f, 0.9999950155f, 0.9999950155f} + }; + + public static float[][] sin_gammas_normal = + { + new float[] {0.0000000000f, 0.1774824223f, 0.2817977711f, 0.4466990028f, 0.5622988435f, 0.6892024258f, 0.6892024258f, 0.6892024258f}, + new float[] {0.0000000000f, 0.1727308798f, 0.2738315110f, 0.4315392630f, 0.5368416242f, 0.6198968861f, 0.6198968861f, 0.6198968861f}, + new float[] {0.0000000000f, 0.1596999079f, 0.2521910140f, 0.3921288836f, 0.4777300236f, 0.5325107795f, 0.5325107795f, 0.5325107795f}, + new float[] {0.0000000000f, 0.1312190642f, 0.2057717310f, 0.3134450552f, 0.3732874674f, 0.4072080955f, 0.4072080955f, 0.4072080955f}, + new float[] {0.0000000000f, 0.1009407043f, 0.1574189028f, 0.2364938532f, 0.2783471983f, 0.3010924396f, 0.3010924396f, 0.3010924396f}, + new float[] {0.0000000000f, 0.0671836269f, 0.1043333428f, 0.1552598422f, 0.1814615013f, 0.1954144885f, 0.1954144885f, 0.1954144885f}, + new float[] {0.0000000000f, 0.0433324862f, 0.0671666110f, 0.0995516398f, 0.1160332699f, 0.1247478739f, 0.1247478739f, 0.1247478739f}, + new float[] {0.0000000000f, 0.0195860576f, 0.0303269852f, 0.0448519274f, 0.0522022017f, 0.0560750040f, 0.0560750040f, 0.0560750040f} + }; + + public static float[][] sin_gammas_fine = + { + new float[] {0.0000000000f, 0.1774824223f, 0.2817977711f, 0.4466990028f, 0.5622988435f, 0.6892024258f, 0.6892024258f, 0.6892024258f}, + new float[] {0.0000000000f, 0.1727308798f, 0.2738315110f, 0.4315392630f, 0.5368416242f, 0.6198968861f, 0.6198968861f, 0.6198968861f}, + new float[] {0.0000000000f, 0.1596999079f, 0.2521910140f, 0.3921288836f, 0.4777300236f, 0.5325107795f, 0.5325107795f, 0.5325107795f}, + new float[] {0.0000000000f, 0.1413496768f, 0.2221615526f, 0.3405307340f, 0.4080269669f, 0.4473147744f, 0.4473147744f, 0.4473147744f}, + new float[] {0.0000000000f, 0.1209322714f, 0.1892467110f, 0.2867147079f, 0.3397954394f, 0.3693246252f, 0.3693246252f, 0.3693246252f}, + new float[] {0.0000000000f, 0.1009407043f, 0.1574189028f, 0.2364938532f, 0.2783471983f, 0.3010924396f, 0.3010924396f, 0.3010924396f}, + new float[] {0.0000000000f, 0.0746811420f, 0.1160666523f, 0.1730117353f, 0.2024497161f, 0.2181768341f, 0.2181768341f, 0.2181768341f}, + new float[] {0.0000000000f, 0.0540875291f, 0.0838997203f, 0.1245476266f, 0.1453211203f, 0.1563346972f, 0.1563346972f, 0.1563346972f}, + new float[] {0.0000000000f, 0.0387371058f, 0.0600276114f, 0.0889212171f, 0.1036044086f, 0.1113609634f, 0.1113609634f, 0.1113609634f}, + new float[] {0.0000000000f, 0.0275846110f, 0.0427233177f, 0.0632198125f, 0.0736064637f, 0.0790837596f, 0.0790837596f, 0.0790837596f}, + new float[] {0.0000000000f, 0.0195860576f, 0.0303269852f, 0.0448519274f, 0.0522022017f, 0.0560750040f, 0.0560750040f, 0.0560750040f}, + new float[] {0.0000000000f, 0.0110363955f, 0.0170857974f, 0.0252592108f, 0.0293916021f, 0.0315673054f, 0.0315673054f, 0.0315673054f}, + new float[] {0.0000000000f, 0.0062101284f, 0.0096138203f, 0.0142109649f, 0.0165345659f, 0.0177576316f, 0.0177576316f, 0.0177576316f}, + new float[] {0.0000000000f, 0.0034934509f, 0.0054071189f, 0.0079928316f, 0.0092994041f, 0.0099871631f, 0.0099871631f, 0.0099871631f}, + new float[] {0.0000000000f, 0.0019645397f, 0.0030419905f, 0.0044951511f, 0.0052291853f, 0.0056166498f, 0.0056166498f, 0.0056166498f}, + new float[] {0.0000000000f, 0.0011053943f, 0.0017089869f, 0.0025283670f, 0.0029398552f, 0.0031573685f, 0.0031573685f, 0.0031573685f} + }; + + public static float[] sf_iid_normal = + { + 1.4119827747f, 1.4031381607f, 1.3868767023f, + 1.3483997583f, 1.2912493944f, 1.1960374117f, + 1.1073724031f, 1.0000000000f, 0.8796171546f, + 0.7546485662f, 0.5767799020f, 0.4264014363f, + 0.2767182887f, 0.1766446233f, 0.0794016272f + }; + + public static float[] sf_iid_fine = + { + 1.4142065048f, 1.4141912460f, 1.4141428471f, + 1.4139900208f, 1.4135069847f, 1.4119827747f, + 1.4097729921f, 1.4053947926f, 1.3967796564f, + 1.3800530434f, 1.3483997583f, 1.3139201403f, + 1.2643101215f, 1.1960374117f, 1.1073724031f, + 1.0000000000f, 0.8796171546f, 0.7546485662f, + 0.6336560845f, 0.5230810642f, 0.4264014363f, + 0.3089554012f, 0.2213746458f, 0.1576878875f, + 0.1119822487f, 0.0794016272f, 0.0446990170f, + 0.0251446925f, 0.0141414283f, 0.0079525812f, + 0.0044721137f + }; + public static float[] ipdopd_cos_tab = + { + 1.000000000000000f, + 0.707106781186548f, + 0.000000000000000f, + -0.707106781186547f, + -1.000000000000000f, + -0.707106781186548f, + -0.000000000000000f, + 0.707106781186547f, + 1.000000000000000f + }; + + public static float[] ipdopd_sin_tab = + { + 0.000000000000000f, + 0.707106781186547f, + 1.000000000000000f, + 0.707106781186548f, + 0.000000000000000f, + -0.707106781186547f, + -1.000000000000000f, + -0.707106781186548f, + -0.000000000000000f + }; + } +} diff --git a/SharpJaad.AAC/SampleBuffer.cs b/SharpJaad.AAC/SampleBuffer.cs new file mode 100644 index 0000000..abd2a28 --- /dev/null +++ b/SharpJaad.AAC/SampleBuffer.cs @@ -0,0 +1,68 @@ +namespace SharpJaad.AAC +{ + /// + /// The SampleBuffer holds the decoded AAC frame. It contains the raw PCM data and its format. + /// + public class SampleBuffer + { + public int SampleRate { get; private set; } + public int Channels { get; private set; } + public int BitsPerSample { get; private set; } + public double Length { get; private set; } + public double Bitrate { get; private set; } + public double EncodedBitrate { get; private set; } + public byte[] Data { get; private set; } + public bool BigEndian { get; private set; } + + public SampleBuffer() + { + Data = new byte[0]; + SampleRate = 0; + Channels = 0; + BitsPerSample = 0; + BigEndian = true; + } + + /// + /// Sets the endianness for the data. + /// + /// if true the data will be in big endian, else in little endian + public void SetBigEndian(bool bigEndian) + { + if (bigEndian != BigEndian) + { + byte tmp; + for (int i = 0; i < Data.Length; i += 2) + { + tmp = Data[i]; + Data[i] = Data[i + 1]; + Data[i + 1] = tmp; + } + BigEndian = bigEndian; + } + } + + public void SetData(byte[] data, int sampleRate, int channels, int bitsPerSample, int bitsRead) + { + Data = data; + SampleRate = sampleRate; + Channels = channels; + BitsPerSample = bitsPerSample; + + if (sampleRate == 0) + { + Length = 0; + Bitrate = 0; + EncodedBitrate = 0; + } + else + { + int bytesPerSample = bitsPerSample / 8; //usually 2 + int samplesPerChannel = data.Length / (bytesPerSample * channels); //=1024 + Length = samplesPerChannel / (double)sampleRate; + Bitrate = samplesPerChannel * bitsPerSample * channels / Length; + EncodedBitrate = bitsRead / Length; + } + } + } +} diff --git a/SharpJaad.AAC/SampleFrequency.cs b/SharpJaad.AAC/SampleFrequency.cs new file mode 100644 index 0000000..4bbd7d9 --- /dev/null +++ b/SharpJaad.AAC/SampleFrequency.cs @@ -0,0 +1,280 @@ +namespace SharpJaad.AAC +{ + public enum SampleFrequency : int + { + SAMPLE_FREQUENCY_96000 = 0, + SAMPLE_FREQUENCY_88200 = 1, + SAMPLE_FREQUENCY_64000 = 2, + SAMPLE_FREQUENCY_48000 = 3, + SAMPLE_FREQUENCY_44100 = 4, + SAMPLE_FREQUENCY_32000 = 5, + SAMPLE_FREQUENCY_24000 = 6, + SAMPLE_FREQUENCY_22050 = 7, + SAMPLE_FREQUENCY_16000 = 8, + SAMPLE_FREQUENCY_12000 = 9, + SAMPLE_FREQUENCY_11025 = 10, + SAMPLE_FREQUENCY_8000 = 11, + SAMPLE_FREQUENCY_NONE = -1 + } + + public static class SampleFrequencyExtensions + { + public static SampleFrequency FromFrequency(int frequency) + { + SampleFrequency ret; + switch (frequency) + { + case 96000: + ret = SampleFrequency.SAMPLE_FREQUENCY_96000; + break; + + case 88200: + ret = SampleFrequency.SAMPLE_FREQUENCY_88200; + break; + + case 64000: + ret = SampleFrequency.SAMPLE_FREQUENCY_64000; + break; + + case 48000: + ret = SampleFrequency.SAMPLE_FREQUENCY_48000; + break; + + case 44100: + ret = SampleFrequency.SAMPLE_FREQUENCY_44100; + break; + + case 32000: + ret = SampleFrequency.SAMPLE_FREQUENCY_32000; + break; + + case 24000: + ret = SampleFrequency.SAMPLE_FREQUENCY_24000; + break; + + case 22050: + ret = SampleFrequency.SAMPLE_FREQUENCY_22050; + break; + + case 16000: + ret = SampleFrequency.SAMPLE_FREQUENCY_16000; + break; + + case 12000: + ret = SampleFrequency.SAMPLE_FREQUENCY_12000; + break; + + case 11025: + ret = SampleFrequency.SAMPLE_FREQUENCY_11025; + break; + + case 8000: + ret = SampleFrequency.SAMPLE_FREQUENCY_8000; + break; + + default: + ret = SampleFrequency.SAMPLE_FREQUENCY_NONE; + break; + } + + return ret; + } + + public static int GetFrequency(this SampleFrequency frequency) + { + int ret; + switch (frequency) + { + case SampleFrequency.SAMPLE_FREQUENCY_96000: + ret = 96000; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_88200: + ret = 88200; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_64000: + ret = 64000; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_48000: + ret = 48000; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_44100: + ret = 44100; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_32000: + ret = 32000; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_24000: + ret = 24000; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_22050: + ret = 22050; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_16000: + ret = 16000; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_12000: + ret = 12000; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_11025: + ret = 11025; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_8000: + ret = 8000; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_NONE: + default: + ret = 0; + break; + } + + return ret; + } + + public static int GetMaximalPredictionSFB(this SampleFrequency frequency) + { + int ret; + switch (frequency) + { + case SampleFrequency.SAMPLE_FREQUENCY_96000: + case SampleFrequency.SAMPLE_FREQUENCY_88200: + ret = 33; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_64000: + ret = 38; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_48000: + case SampleFrequency.SAMPLE_FREQUENCY_44100: + case SampleFrequency.SAMPLE_FREQUENCY_32000: + ret = 40; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_24000: + case SampleFrequency.SAMPLE_FREQUENCY_22050: + ret = 41; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_16000: + case SampleFrequency.SAMPLE_FREQUENCY_12000: + case SampleFrequency.SAMPLE_FREQUENCY_11025: + ret = 37; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_8000: + ret = 34; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_NONE: + default: + ret = 0; + break; + } + + return ret; + } + + public static int GetPredictorCount(this SampleFrequency frequency) + { + int ret; + switch (frequency) + { + case SampleFrequency.SAMPLE_FREQUENCY_96000: + case SampleFrequency.SAMPLE_FREQUENCY_88200: + ret = 512; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_64000: + ret = 664; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_48000: + case SampleFrequency.SAMPLE_FREQUENCY_44100: + case SampleFrequency.SAMPLE_FREQUENCY_32000: + ret = 672; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_24000: + case SampleFrequency.SAMPLE_FREQUENCY_22050: + ret = 652; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_16000: + case SampleFrequency.SAMPLE_FREQUENCY_12000: + case SampleFrequency.SAMPLE_FREQUENCY_11025: + case SampleFrequency.SAMPLE_FREQUENCY_8000: + ret = 664; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_NONE: + default: + ret = 0; + break; + } + + return ret; + } + + public static int GetMaximalTNS_SFB(this SampleFrequency frequency, bool shortWindow) + { + int ret; + switch (frequency) + { + case SampleFrequency.SAMPLE_FREQUENCY_96000: + case SampleFrequency.SAMPLE_FREQUENCY_88200: + ret = shortWindow ? 9 : 31; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_64000: + ret = shortWindow ? 10 : 34; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_48000: + ret = shortWindow ? 14 : 40; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_44100: + ret = shortWindow ? 14 : 42; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_32000: + ret = shortWindow ? 14 : 51; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_24000: + case SampleFrequency.SAMPLE_FREQUENCY_22050: + ret = shortWindow ? 14 : 46; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_16000: + case SampleFrequency.SAMPLE_FREQUENCY_12000: + case SampleFrequency.SAMPLE_FREQUENCY_11025: + ret = shortWindow ? 14 : 42; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_8000: + ret = shortWindow ? 14 : 39; + break; + + case SampleFrequency.SAMPLE_FREQUENCY_NONE: + default: + ret = 0; + break; + } + + return ret; + } + } +} diff --git a/SharpJaad.AAC/Sbr/AnalysisFilterbank.cs b/SharpJaad.AAC/Sbr/AnalysisFilterbank.cs new file mode 100644 index 0000000..fbce5c3 --- /dev/null +++ b/SharpJaad.AAC/Sbr/AnalysisFilterbank.cs @@ -0,0 +1,105 @@ +using SharpJaad.AAC.Tools; + +namespace SharpJaad.AAC.Sbr +{ + public class AnalysisFilterbank + { + private float[] _x; //x is implemented as double ringbuffer + private int _xIndex; //ringbuffer index + private int _channels; + + public AnalysisFilterbank(int channels) + { + _channels = channels; + _x = new float[2 * channels * 10]; + _xIndex = 0; + } + + public void Reset() + { + Arrays.Fill(_x, 0); + } + + public void SbrQmfAnalysis32(SBR sbr, float[] input, float[,,,] X, int ch, int offset, int kx) + { + float[] u = new float[64]; + float[] in_real = new float[32], in_imag = new float[32]; + float[] out_real = new float[32], out_imag = new float[32]; + int iin = 0; + int l; + + /* qmf subsample l */ + for (l = 0; l < sbr._numTimeSlotsRate; l++) + { + int n; + + /* shift input buffer x */ + /* input buffer is not shifted anymore, x is implemented as double ringbuffer */ + //memmove(qmfa.x + 32, qmfa.x, (320-32)*sizeof(real_t)); + + /* add new samples to input buffer x */ + for (n = 32 - 1; n >= 0; n--) + { + _x[_xIndex + n] = _x[_xIndex + n + 320] = input[iin++]; + } + + /* window and summation to create array u */ + for (n = 0; n < 64; n++) + { + u[n] = _x[_xIndex + n] * FilterbankTable.qmf_c[2 * n] + + _x[_xIndex + n + 64] * FilterbankTable.qmf_c[2 * (n + 64)] + + _x[_xIndex + n + 128] * FilterbankTable.qmf_c[2 * (n + 128)] + + _x[_xIndex + n + 192] * FilterbankTable.qmf_c[2 * (n + 192)] + + _x[_xIndex + n + 256] * FilterbankTable.qmf_c[2 * (n + 256)]; + } + + /* update ringbuffer index */ + _xIndex -= 32; + if (_xIndex < 0) + _xIndex = 320 - 32; + + /* calculate 32 subband samples by introducing X */ + // Reordering of data moved from DCT_IV to here + in_imag[31] = u[1]; + in_real[0] = u[0]; + for (n = 1; n < 31; n++) + { + in_imag[31 - n] = u[n + 1]; + in_real[n] = -u[64 - n]; + } + in_imag[0] = u[32]; + in_real[31] = -u[33]; + + // dct4_kernel is DCT_IV without reordering which is done before and after FFT + DCT.Dct4Kernel(in_real, in_imag, out_real, out_imag); + + // Reordering of data moved from DCT_IV to here + for (n = 0; n < 16; n++) + { + if (2 * n + 1 < kx) + { + X[ch, l + offset, 2 * n, 0] = 2.0f * out_real[n]; + X[ch, l + offset, 2 * n, 1] = 2.0f * out_imag[n]; + X[ch, l + offset, 2 * n + 1, 0] = -2.0f * out_imag[31 - n]; + X[ch, l + offset, 2 * n + 1, 1] = -2.0f * out_real[31 - n]; + } + else + { + if (2 * n < kx) + { + X[ch, l + offset, 2 * n, 0] = 2.0f * out_real[n]; + X[ch, l + offset, 2 * n, 1] = 2.0f * out_imag[n]; + } + else + { + X[ch, l + offset, 2 * n, 0] = 0; + X[ch, l + offset, 2 * n, 1] = 0; + } + X[ch, l + offset, 2 * n + 1, 0] = 0; + X[ch, l + offset, 2 * n + 1, 1] = 0; + } + } + } + } + } +} diff --git a/SharpJaad.AAC/Sbr/Constants.cs b/SharpJaad.AAC/Sbr/Constants.cs new file mode 100644 index 0000000..8e70cfd --- /dev/null +++ b/SharpJaad.AAC/Sbr/Constants.cs @@ -0,0 +1,37 @@ +namespace SharpJaad.AAC.Sbr +{ + public static class Constants + { + public static int[] startMinTable = { 7, 7, 10, 11, 12, 16, 16, 17, 24, 32, 35, 48 }; + public static int[] offsetIndexTable = { 5, 5, 4, 4, 4, 3, 2, 1, 0, 6, 6, 6 }; + public static int[][] OFFSET = { + new int[] {-8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7}, //16000 + new int[] {-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 13}, //22050 + new int[] {-5, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 13, 16}, //24000 + new int[] {-6, -4, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 13, 16}, //32000 + new int[] {-4, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 13, 16, 20}, //44100-64000 + new int[] {-2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 13, 16, 20, 24}, //>64000 + new int[] {0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 13, 16, 20, 24, 28, 33} + }; + + public const int EXTENSION_ID_PS = 2; + public const int MAX_NTSRHFG = 40; //maximum of number_time_slots * rate + HFGen. 16*2+8 + public const int MAX_NTSR = 32; //max number_time_slots * rate, ok for DRM and not DRM mode + public const int MAX_M = 49; //maximum value for M + public const int MAX_L_E = 5; //maximum value for L_E + public const int EXT_SBR_DATA = 13; + public const int EXT_SBR_DATA_CRC = 14; + public const int FIXFIX = 0; + public const int FIXVAR = 1; + public const int VARFIX = 2; + public const int VARVAR = 3; + public const int LO_RES = 0; + public const int HI_RES = 1; + public const int NO_TIME_SLOTS_960 = 15; + public const int NO_TIME_SLOTS = 16; + public const int RATE = 2; + public const int NOISE_FLOOR_OFFSET = 6; + public const int T_HFGEN = 8; + public const int T_HFADJ = 2; + } +} diff --git a/SharpJaad.AAC/Sbr/DCT.cs b/SharpJaad.AAC/Sbr/DCT.cs new file mode 100644 index 0000000..f24ddf8 --- /dev/null +++ b/SharpJaad.AAC/Sbr/DCT.cs @@ -0,0 +1,408 @@ +namespace SharpJaad.AAC.Sbr +{ + public static class DCT + { + private static int n = 32; + + // w_array_real[i] = cos(2*M_PI*i/32) + private static float[] w_array_real = { + 1.000000000000000f, 0.980785279337272f, + 0.923879528329380f, 0.831469603195765f, + 0.707106765732237f, 0.555570210304169f, + 0.382683402077046f, 0.195090284503576f, + 0.000000000000000f, -0.195090370246552f, + -0.382683482845162f, -0.555570282993553f, + -0.707106827549476f, -0.831469651765257f, + -0.923879561784627f, -0.980785296392607f + }; + + // w_array_imag[i] = sin(-2*M_PI*i/32) + private static float[] w_array_imag = { + 0.000000000000000f, -0.195090327375064f, + -0.382683442461104f, -0.555570246648862f, + -0.707106796640858f, -0.831469627480512f, + -0.923879545057005f, -0.980785287864940f, + -1.000000000000000f, -0.980785270809601f, + -0.923879511601754f, -0.831469578911016f, + -0.707106734823616f, -0.555570173959476f, + -0.382683361692986f, -0.195090241632088f + }; + + private static float[] dct4_64_tab = { + 0.999924719333649f, 0.998118102550507f, + 0.993906974792480f, 0.987301409244537f, + 0.978317379951477f, 0.966976463794708f, + 0.953306019306183f, 0.937339007854462f, + 0.919113874435425f, 0.898674488067627f, + 0.876070082187653f, 0.851355195045471f, + 0.824589252471924f, 0.795836925506592f, + 0.765167236328125f, 0.732654273509979f, + 0.698376238346100f, 0.662415742874146f, + 0.624859452247620f, 0.585797846317291f, + 0.545324981212616f, 0.503538429737091f, + 0.460538715124130f, 0.416429549455643f, + 0.371317148208618f, 0.325310230255127f, + 0.278519600629807f, 0.231058135628700f, + 0.183039888739586f, 0.134580686688423f, + 0.085797272622585f, 0.036807164549828f, + -1.012196302413940f, -1.059438824653626f, + -1.104129195213318f, -1.146159529685974f, + -1.185428738594055f, -1.221842169761658f, + -1.255311965942383f, -1.285757660865784f, + -1.313105940818787f, -1.337290763854981f, + -1.358253836631775f, -1.375944852828980f, + -1.390321016311646f, -1.401347875595093f, + -1.408998727798462f, -1.413255214691162f, + -1.414107084274292f, -1.411552190780640f, + -1.405596733093262f, -1.396255016326904f, + -1.383549690246582f, -1.367511272430420f, + -1.348178386688232f, -1.325597524642944f, + -1.299823284149170f, -1.270917654037476f, + -1.238950133323669f, -1.203998088836670f, + -1.166145324707031f, -1.125483393669128f, + -1.082109928131104f, -1.036129593849182f, + -0.987653195858002f, -0.936797380447388f, + -0.883684754371643f, -0.828443288803101f, + -0.771206021308899f, -0.712110757827759f, + -0.651300072669983f, -0.588920354843140f, + -0.525121808052063f, -0.460058242082596f, + -0.393886327743530f, -0.326765477657318f, + -0.258857429027557f, -0.190325915813446f, + -0.121335685253143f, -0.052053272724152f, + 0.017354607582092f, 0.086720645427704f, + 0.155877828598022f, 0.224659323692322f, + 0.292899727821350f, 0.360434412956238f, + 0.427100926637650f, 0.492738455533981f, + 0.557188928127289f, 0.620297133922577f, + 0.681910991668701f, 0.741881847381592f, + 0.800065577030182f, 0.856321990489960f, + 0.910515367984772f, 0.962515234947205f, + 1.000000000000000f, 0.998795449733734f, + 0.995184719562531f, 0.989176511764526f, + 0.980785250663757f, 0.970031261444092f, + 0.956940352916718f, 0.941544055938721f, + 0.923879504203796f, 0.903989315032959f, + 0.881921231746674f, 0.857728600502014f, + 0.831469595432281f, 0.803207516670227f, + 0.773010432720184f, 0.740951120853424f, + 0.707106769084930f, 0.671558916568756f, + 0.634393274784088f, 0.595699310302734f, + 0.555570185184479f, 0.514102697372437f, + 0.471396654844284f, 0.427555114030838f, + 0.382683426141739f, 0.336889833211899f, + 0.290284633636475f, 0.242980122566223f, + 0.195090234279633f, 0.146730497479439f, + 0.098017133772373f, 0.049067649990320f, + -1.000000000000000f, -1.047863125801086f, + -1.093201875686646f, -1.135906934738159f, + -1.175875544548035f, -1.213011503219605f, + -1.247225046157837f, -1.278433918952942f, + -1.306562900543213f, -1.331544399261475f, + -1.353317975997925f, -1.371831417083740f, + -1.387039899826050f, -1.398906826972961f, + -1.407403707504273f, -1.412510156631470f, + 0f, -1.412510156631470f, + -1.407403707504273f, -1.398906826972961f, + -1.387039899826050f, -1.371831417083740f, + -1.353317975997925f, -1.331544399261475f, + -1.306562900543213f, -1.278433918952942f, + -1.247225046157837f, -1.213011384010315f, + -1.175875544548035f, -1.135907053947449f, + -1.093201875686646f, -1.047863125801086f, + -1.000000000000000f, -0.949727773666382f, + -0.897167563438416f, -0.842446029186249f, + -0.785694956779480f, -0.727051079273224f, + -0.666655659675598f, -0.604654192924500f, + -0.541196048259735f, -0.476434230804443f, + -0.410524487495422f, -0.343625843524933f, + -0.275899350643158f, -0.207508206367493f, + -0.138617098331451f, -0.069392144680023f, + 0f, 0.069392263889313f, + 0.138617157936096f, 0.207508206367493f, + 0.275899469852448f, 0.343625962734222f, + 0.410524636507034f, 0.476434201002121f, + 0.541196107864380f, 0.604654192924500f, + 0.666655719280243f, 0.727051138877869f, + 0.785695075988770f, 0.842446029186249f, + 0.897167563438416f, 0.949727773666382f + }; + + private static int[] bit_rev_tab = { 0, 16, 8, 24, 4, 20, 12, 28, 2, 18, 10, 26, 6, 22, 14, 30, 1, 17, 9, 25, 5, 21, 13, 29, 3, 19, 11, 27, 7, 23, 15, 31 }; + + // FFT decimation in frequency + // 4*16*2+16=128+16=144 multiplications + // 6*16*2+10*8+4*16*2=192+80+128=400 additions + private static void FftDif(float[] Real, float[] Imag) + { + float w_real, w_imag; // For faster access + float point1_real, point1_imag, point2_real, point2_imag; // For faster access + int j, i, i2, w_index; // Counters + + // First 2 stages of 32 point FFT decimation in frequency + // 4*16*2=64*2=128 multiplications + // 6*16*2=96*2=192 additions + // Stage 1 of 32 point FFT decimation in frequency + for (i = 0; i < 16; i++) + { + point1_real = Real[i]; + point1_imag = Imag[i]; + i2 = i + 16; + point2_real = Real[i2]; + point2_imag = Imag[i2]; + + w_real = w_array_real[i]; + w_imag = w_array_imag[i]; + + // temp1 = x[i] - x[i2] + point1_real -= point2_real; + point1_imag -= point2_imag; + + // x[i1] = x[i] + x[i2] + Real[i] += point2_real; + Imag[i] += point2_imag; + + // x[i2] = (x[i] - x[i2]) * w + Real[i2] = point1_real * w_real - point1_imag * w_imag; + Imag[i2] = point1_real * w_imag + point1_imag * w_real; + } + // Stage 2 of 32 point FFT decimation in frequency + for (j = 0, w_index = 0; j < 8; j++, w_index += 2) + { + w_real = w_array_real[w_index]; + w_imag = w_array_imag[w_index]; + + i = j; + point1_real = Real[i]; + point1_imag = Imag[i]; + i2 = i + 8; + point2_real = Real[i2]; + point2_imag = Imag[i2]; + + // temp1 = x[i] - x[i2] + point1_real -= point2_real; + point1_imag -= point2_imag; + + // x[i1] = x[i] + x[i2] + Real[i] += point2_real; + Imag[i] += point2_imag; + + // x[i2] = (x[i] - x[i2]) * w + Real[i2] = point1_real * w_real - point1_imag * w_imag; + Imag[i2] = point1_real * w_imag + point1_imag * w_real; + + i = j + 16; + point1_real = Real[i]; + point1_imag = Imag[i]; + i2 = i + 8; + point2_real = Real[i2]; + point2_imag = Imag[i2]; + + // temp1 = x[i] - x[i2] + point1_real -= point2_real; + point1_imag -= point2_imag; + + // x[i1] = x[i] + x[i2] + Real[i] += point2_real; + Imag[i] += point2_imag; + + // x[i2] = (x[i] - x[i2]) * w + Real[i2] = point1_real * w_real - point1_imag * w_imag; + Imag[i2] = point1_real * w_imag + point1_imag * w_real; + } + + // Stage 3 of 32 point FFT decimation in frequency + // 2*4*2=16 multiplications + // 4*4*2+6*4*2=10*8=80 additions + for (i = 0; i < n; i += 8) + { + i2 = i + 4; + point1_real = Real[i]; + point1_imag = Imag[i]; + + point2_real = Real[i2]; + point2_imag = Imag[i2]; + + // out[i1] = point1 + point2 + Real[i] += point2_real; + Imag[i] += point2_imag; + + // out[i2] = point1 - point2 + Real[i2] = point1_real - point2_real; + Imag[i2] = point1_imag - point2_imag; + } + w_real = w_array_real[4]; // = sqrt(2)/2 + // w_imag = -w_real; // = w_array_imag[4]; // = -sqrt(2)/2 + for (i = 1; i < n; i += 8) + { + i2 = i + 4; + point1_real = Real[i]; + point1_imag = Imag[i]; + + point2_real = Real[i2]; + point2_imag = Imag[i2]; + + // temp1 = x[i] - x[i2] + point1_real -= point2_real; + point1_imag -= point2_imag; + + // x[i1] = x[i] + x[i2] + Real[i] += point2_real; + Imag[i] += point2_imag; + + // x[i2] = (x[i] - x[i2]) * w + Real[i2] = (point1_real + point1_imag) * w_real; + Imag[i2] = (point1_imag - point1_real) * w_real; + } + for (i = 2; i < n; i += 8) + { + i2 = i + 4; + point1_real = Real[i]; + point1_imag = Imag[i]; + + point2_real = Real[i2]; + point2_imag = Imag[i2]; + + // x[i] = x[i] + x[i2] + Real[i] += point2_real; + Imag[i] += point2_imag; + + // x[i2] = (x[i] - x[i2]) * (-i) + Real[i2] = point1_imag - point2_imag; + Imag[i2] = point2_real - point1_real; + } + w_real = w_array_real[12]; // = -sqrt(2)/2 + // w_imag = w_real; // = w_array_imag[12]; // = -sqrt(2)/2 + for (i = 3; i < n; i += 8) + { + i2 = i + 4; + point1_real = Real[i]; + point1_imag = Imag[i]; + + point2_real = Real[i2]; + point2_imag = Imag[i2]; + + // temp1 = x[i] - x[i2] + point1_real -= point2_real; + point1_imag -= point2_imag; + + // x[i1] = x[i] + x[i2] + Real[i] += point2_real; + Imag[i] += point2_imag; + + // x[i2] = (x[i] - x[i2]) * w + Real[i2] = (point1_real - point1_imag) * w_real; + Imag[i2] = (point1_real + point1_imag) * w_real; + } + + // Stage 4 of 32 point FFT decimation in frequency (no multiplications) + // 16*4=64 additions + for (i = 0; i < n; i += 4) + { + i2 = i + 2; + point1_real = Real[i]; + point1_imag = Imag[i]; + + point2_real = Real[i2]; + point2_imag = Imag[i2]; + + // x[i1] = x[i] + x[i2] + Real[i] += point2_real; + Imag[i] += point2_imag; + + // x[i2] = x[i] - x[i2] + Real[i2] = point1_real - point2_real; + Imag[i2] = point1_imag - point2_imag; + } + for (i = 1; i < n; i += 4) + { + i2 = i + 2; + point1_real = Real[i]; + point1_imag = Imag[i]; + + point2_real = Real[i2]; + point2_imag = Imag[i2]; + + // x[i] = x[i] + x[i2] + Real[i] += point2_real; + Imag[i] += point2_imag; + + // x[i2] = (x[i] - x[i2]) * (-i) + Real[i2] = point1_imag - point2_imag; + Imag[i2] = point2_real - point1_real; + } + + // Stage 5 of 32 point FFT decimation in frequency (no multiplications) + // 16*4=64 additions + for (i = 0; i < n; i += 2) + { + i2 = i + 1; + point1_real = Real[i]; + point1_imag = Imag[i]; + + point2_real = Real[i2]; + point2_imag = Imag[i2]; + + // out[i1] = point1 + point2 + Real[i] += point2_real; + Imag[i] += point2_imag; + + // out[i2] = point1 - point2 + Real[i2] = point1_real - point2_real; + Imag[i2] = point1_imag - point2_imag; + } + + //FFTReorder(Real, Imag); + } + + /* size 64 only! */ + public static void Dct4Kernel(float[] in_real, float[] in_imag, float[] out_real, float[] out_imag) + { + // Tables with bit reverse values for 5 bits, bit reverse of i at i-th position + int i, i_rev; + + /* Step 2: modulate */ + // 3*32=96 multiplications + // 3*32=96 additions + for (i = 0; i < 32; i++) + { + float x_re, x_im, tmp; + x_re = in_real[i]; + x_im = in_imag[i]; + tmp = (x_re + x_im) * dct4_64_tab[i]; + in_real[i] = x_im * dct4_64_tab[i + 64] + tmp; + in_imag[i] = x_re * dct4_64_tab[i + 32] + tmp; + } + + /* Step 3: FFT, but with output in bit reverse order */ + FftDif(in_real, in_imag); + + /* Step 4: modulate + bitreverse reordering */ + // 3*31+2=95 multiplications + // 3*31+2=95 additions + for (i = 0; i < 16; i++) + { + float x_re, x_im, tmp; + i_rev = bit_rev_tab[i]; + x_re = in_real[i_rev]; + x_im = in_imag[i_rev]; + + tmp = (x_re + x_im) * dct4_64_tab[i + 3 * 32]; + out_real[i] = x_im * dct4_64_tab[i + 5 * 32] + tmp; + out_imag[i] = x_re * dct4_64_tab[i + 4 * 32] + tmp; + } + // i = 16, i_rev = 1 = rev(16); + out_imag[16] = (in_imag[1] - in_real[1]) * dct4_64_tab[16 + 3 * 32]; + out_real[16] = (in_real[1] + in_imag[1]) * dct4_64_tab[16 + 3 * 32]; + for (i = 17; i < 32; i++) + { + float x_re, x_im, tmp; + i_rev = bit_rev_tab[i]; + x_re = in_real[i_rev]; + x_im = in_imag[i_rev]; + tmp = (x_re + x_im) * dct4_64_tab[i + 3 * 32]; + out_real[i] = x_im * dct4_64_tab[i + 5 * 32] + tmp; + out_imag[i] = x_re * dct4_64_tab[i + 4 * 32] + tmp; + } + } + } +} diff --git a/SharpJaad.AAC/Sbr/FBT.cs b/SharpJaad.AAC/Sbr/FBT.cs new file mode 100644 index 0000000..43f065e --- /dev/null +++ b/SharpJaad.AAC/Sbr/FBT.cs @@ -0,0 +1,472 @@ +using System; + +namespace SharpJaad.AAC.Sbr +{ + public static class FBT + { + /* calculate the start QMF channel for the master frequency band table */ + /* parameter is also called k0 */ + public static int QmfStartChannel(int bs_start_freq, int bs_samplerate_mode, + SampleFrequency sample_rate) + { + int startMin = Constants.startMinTable[(int)sample_rate]; + int offsetIndex = Constants.offsetIndexTable[(int)sample_rate]; + + if (bs_samplerate_mode != 0) + { + return startMin + Constants.OFFSET[offsetIndex][bs_start_freq]; + } + else + { + return startMin + Constants.OFFSET[6][bs_start_freq]; + } + } + + private static int[] stopMinTable = {13, 15, 20, 21, 23, + 32, 32, 35, 48, 64, 70, 96}; + + private static int[][] STOP_OFFSET_TABLE = { + new int[] {0, 2, 4, 6, 8, 11, 14, 18, 22, 26, 31, 37, 44, 51}, + new int[] {0, 2, 4, 6, 8, 11, 14, 18, 22, 26, 31, 36, 42, 49}, + new int[] {0, 2, 4, 6, 8, 11, 14, 17, 21, 25, 29, 34, 39, 44}, + new int[] {0, 2, 4, 6, 8, 11, 14, 17, 20, 24, 28, 33, 38, 43}, + new int[] {0, 2, 4, 6, 8, 11, 14, 17, 20, 24, 28, 32, 36, 41}, + new int[] {0, 2, 4, 6, 8, 10, 12, 14, 17, 20, 23, 26, 29, 32}, + new int[] {0, 2, 4, 6, 8, 10, 12, 14, 17, 20, 23, 26, 29, 32}, + new int[] {0, 1, 3, 5, 7, 9, 11, 13, 15, 17, 20, 23, 26, 29}, + new int[] {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 16}, + new int[] {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, + new int[] {0, -1, -2, -3, -4, -5, -6, -6, -6, -6, -6, -6, -6, -6}, + new int[] {0, -3, -6, -9, -12, -15, -18, -20, -22, -24, -26, -28, -30, -32} + }; + + /* calculate the stop QMF channel for the master frequency band table */ + /* parameter is also called k2 */ + public static int QmfStopChannel(int bs_stop_freq, SampleFrequency sample_rate, + int k0) + { + if (bs_stop_freq == 15) + { + return Math.Min(64, k0 * 3); + } + else if (bs_stop_freq == 14) + { + return Math.Min(64, k0 * 2); + } + else + { + + int stopMin = stopMinTable[(int)sample_rate]; + + /* bs_stop_freq <= 13 */ + return Math.Min(64, stopMin + STOP_OFFSET_TABLE[(int)sample_rate][Math.Min(bs_stop_freq, 13)]); + } + } + + /* calculate the master frequency table from k0, k2, bs_freq_scale + and bs_alter_scale + + version for bs_freq_scale = 0 + */ + public static int MasterFrequencyTableFs0(SBR sbr, int k0, int k2, bool bs_alter_scale) + { + int incr; + int k; + int dk; + int nrBands, k2Achieved; + int k2Diff; + int[] vDk = new int[64]; + + /* mft only defined for k2 > k0 */ + if (k2 <= k0) + { + sbr._N_master = 0; + return 1; + } + + dk = bs_alter_scale ? 2 : 1; + + if (bs_alter_scale) + { + nrBands = k2 - k0 + 2 >> 2 << 1; + } + else + { + nrBands = k2 - k0 >> 1 << 1; + } + nrBands = Math.Min(nrBands, 63); + if (nrBands <= 0) + return 1; + + k2Achieved = k0 + nrBands * dk; + k2Diff = k2 - k2Achieved; + for (k = 0; k < nrBands; k++) + { + vDk[k] = dk; + } + + if (k2Diff != 0) + { + incr = k2Diff > 0 ? -1 : 1; + k = k2Diff > 0 ? nrBands - 1 : 0; + + while (k2Diff != 0) + { + vDk[k] -= incr; + k += incr; + k2Diff += incr; + } + } + + sbr._f_master[0] = k0; + for (k = 1; k <= nrBands; k++) + { + sbr._f_master[k] = sbr._f_master[k - 1] + vDk[k - 1]; + } + + sbr._N_master = nrBands; + sbr._N_master = Math.Min(sbr._N_master, 64); + + return 0; + } + + /* + This function finds the number of bands using this formula: + bands * log(a1/a0)/log(2.0) + 0.5 + */ + public static int FindBands(int warp, int bands, int a0, int a1) + { + float div = (float)Math.Log(2.0); + if (warp != 0) div *= 1.3f; + + return (int)(bands * Math.Log(a1 / (float)a0) / div + 0.5); + } + + public static float FindInitialPower(int bands, int a0, int a1) + { + return (float)Math.Pow(a1 / (float)a0, 1.0f / bands); + } + + /* + version for bs_freq_scale > 0 + */ + public static int MasterFrequencyTable(SBR sbr, int k0, int k2, int bs_freq_scale, bool bs_alter_scale) + { + int k, bands; + bool twoRegions; + int k1; + int nrBand0, nrBand1; + int[] vDk0 = new int[64], vDk1 = new int[64]; + int[] vk0 = new int[64], vk1 = new int[64]; + int[] temp1 = { 6, 5, 4 }; + float q, qk; + int A_1; + + /* mft only defined for k2 > k0 */ + if (k2 <= k0) + { + sbr._N_master = 0; + return 1; + } + + bands = temp1[bs_freq_scale - 1]; + + if (k2 / (float)k0 > 2.2449) + { + twoRegions = true; + k1 = k0 << 1; + } + else + { + twoRegions = false; + k1 = k2; + } + + nrBand0 = 2 * FindBands(0, bands, k0, k1); + nrBand0 = Math.Min(nrBand0, 63); + if (nrBand0 <= 0) + return 1; + + q = FindInitialPower(nrBand0, k0, k1); + qk = k0; + A_1 = (int)(qk + 0.5f); + for (k = 0; k <= nrBand0; k++) + { + int A_0 = A_1; + qk *= q; + A_1 = (int)(qk + 0.5f); + vDk0[k] = A_1 - A_0; + } + + /* needed? */ + //qsort(vDk0, nrBand0, sizeof(vDk0[0]), longcmp); + Array.Sort(vDk0, 0, nrBand0); + + vk0[0] = k0; + for (k = 1; k <= nrBand0; k++) + { + vk0[k] = vk0[k - 1] + vDk0[k - 1]; + if (vDk0[k - 1] == 0) + return 1; + } + + if (!twoRegions) + { + for (k = 0; k <= nrBand0; k++) + { + sbr._f_master[k] = vk0[k]; + } + + sbr._N_master = nrBand0; + sbr._N_master = Math.Min(sbr._N_master, 64); + return 0; + } + + nrBand1 = 2 * FindBands(1 /* warped */, bands, k1, k2); + nrBand1 = Math.Min(nrBand1, 63); + + q = FindInitialPower(nrBand1, k1, k2); + qk = k1; + A_1 = (int)(qk + 0.5f); + for (k = 0; k <= nrBand1 - 1; k++) + { + int A_0 = A_1; + qk *= q; + A_1 = (int)(qk + 0.5f); + vDk1[k] = A_1 - A_0; + } + + if (vDk1[0] < vDk0[nrBand0 - 1]) + { + int change; + + /* needed? */ + //qsort(vDk1, nrBand1+1, sizeof(vDk1[0]), longcmp); + Array.Sort(vDk1, 0, nrBand1 + 1); + change = vDk0[nrBand0 - 1] - vDk1[0]; + vDk1[0] = vDk0[nrBand0 - 1]; + vDk1[nrBand1 - 1] = vDk1[nrBand1 - 1] - change; + } + + /* needed? */ + //qsort(vDk1, nrBand1, sizeof(vDk1[0]), longcmp); + Array.Sort(vDk1, 0, nrBand1); + vk1[0] = k1; + for (k = 1; k <= nrBand1; k++) + { + vk1[k] = vk1[k - 1] + vDk1[k - 1]; + if (vDk1[k - 1] == 0) + return 1; + } + + sbr._N_master = nrBand0 + nrBand1; + sbr._N_master = Math.Min(sbr._N_master, 64); + for (k = 0; k <= nrBand0; k++) + { + sbr._f_master[k] = vk0[k]; + } + for (k = nrBand0 + 1; k <= sbr._N_master; k++) + { + sbr._f_master[k] = vk1[k - nrBand0]; + } + + return 0; + } + + /* calculate the derived frequency border tables from f_master */ + public static int DerivedFrequencyTable(SBR sbr, int bs_xover_band, + int k2) + { + int k, i = 0; + int minus; + + /* The following relation shall be satisfied: bs_xover_band < N_Master */ + if (sbr._N_master <= bs_xover_band) + return 1; + + sbr._N_high = sbr._N_master - bs_xover_band; + sbr._N_low = (sbr._N_high >> 1) + (sbr._N_high - (sbr._N_high >> 1 << 1)); + + sbr._n[0] = sbr._N_low; + sbr._n[1] = sbr._N_high; + + for (k = 0; k <= sbr._N_high; k++) + { + sbr._f_table_res[Constants.HI_RES, k] = sbr._f_master[k + bs_xover_band]; + } + + sbr._M = sbr._f_table_res[Constants.HI_RES, sbr._N_high] - sbr._f_table_res[Constants.HI_RES, 0]; + sbr._kx = sbr._f_table_res[Constants.HI_RES, 0]; + if (sbr._kx > 32) + return 1; + if (sbr._kx + sbr._M > 64) + return 1; + + minus = (sbr._N_high & 1) != 0 ? 1 : 0; + + for (k = 0; k <= sbr._N_low; k++) + { + if (k == 0) + i = 0; + else + i = 2 * k - minus; + sbr._f_table_res[Constants.LO_RES, k] = sbr._f_table_res[Constants.HI_RES, i]; + } + + sbr._N_Q = 0; + if (sbr._bs_noise_bands == 0) + { + sbr._N_Q = 1; + } + else + { + sbr._N_Q = Math.Max(1, FindBands(0, sbr._bs_noise_bands, sbr._kx, k2)); + sbr._N_Q = Math.Min(5, sbr._N_Q); + } + + for (k = 0; k <= sbr._N_Q; k++) + { + if (k == 0) + { + i = 0; + } + else + { + /* i = i + (int32_t)((sbr.N_low - i)/(sbr.N_Q + 1 - k)); */ + i += (sbr._N_low - i) / (sbr._N_Q + 1 - k); + } + sbr._f_table_noise[k] = sbr._f_table_res[Constants.LO_RES, i]; + } + + /* build table for mapping k to g in hf patching */ + for (k = 0; k < 64; k++) + { + int g; + for (g = 0; g < sbr._N_Q; g++) + { + if (sbr._f_table_noise[g] <= k + && k < sbr._f_table_noise[g + 1]) + { + sbr._table_map_k_to_g[k] = g; + break; + } + } + } + return 0; + } + + /* TODO: blegh, ugly */ + /* Modified to calculate for all possible bs_limiter_bands always + * This reduces the number calls to this functions needed (now only on + * header reset) + */ + private static float[] limiterBandsCompare = {1.327152f, + 1.185093f, 1.119872f}; + + public static void LimiterFrequencyTable(SBR sbr) + { + int k, s; + int nrLim; + + sbr._f_table_lim[0, 0] = sbr._f_table_res[Constants.LO_RES, 0] - sbr._kx; + sbr._f_table_lim[0, 1] = sbr._f_table_res[Constants.LO_RES, sbr._N_low] - sbr._kx; + sbr._N_L[0] = 1; + + for (s = 1; s < 4; s++) + { + int[] limTable = new int[100 /*TODO*/]; + int[] patchBorders = new int[64/*??*/]; + + patchBorders[0] = sbr._kx; + for (k = 1; k <= sbr._noPatches; k++) + { + patchBorders[k] = patchBorders[k - 1] + sbr._patchNoSubbands[k - 1]; + } + + for (k = 0; k <= sbr._N_low; k++) + { + limTable[k] = sbr._f_table_res[Constants.LO_RES, k]; + } + for (k = 1; k < sbr._noPatches; k++) + { + limTable[k + sbr._N_low] = patchBorders[k]; + } + + /* needed */ + //qsort(limTable, sbr.noPatches+sbr.N_low, sizeof(limTable[0]), longcmp); + Array.Sort(limTable, 0, sbr._noPatches + sbr._N_low); + k = 1; + nrLim = sbr._noPatches + sbr._N_low - 1; + + if (nrLim < 0) // TODO: BIG FAT PROBLEM + return; + + //restart: + while (k <= nrLim) + { + float nOctaves; + + if (limTable[k - 1] != 0) + nOctaves = limTable[k] / (float)limTable[k - 1]; + else + nOctaves = 0; + + if (nOctaves < limiterBandsCompare[s - 1]) + { + int i; + if (limTable[k] != limTable[k - 1]) + { + bool found = false, found2 = false; + for (i = 0; i <= sbr._noPatches; i++) + { + if (limTable[k] == patchBorders[i]) + found = true; + } + if (found) + { + found2 = false; + for (i = 0; i <= sbr._noPatches; i++) + { + if (limTable[k - 1] == patchBorders[i]) + found2 = true; + } + if (found2) + { + k++; + continue; + } + else + { + /* remove (k-1)th element */ + limTable[k - 1] = sbr._f_table_res[Constants.LO_RES, sbr._N_low]; + //qsort(limTable, sbr.noPatches+sbr.N_low, sizeof(limTable[0]), longcmp); + Array.Sort(limTable, 0, sbr._noPatches + sbr._N_low); + nrLim--; + continue; + } + } + } + /* remove kth element */ + limTable[k] = sbr._f_table_res[Constants.LO_RES, sbr._N_low]; + //qsort(limTable, nrLim, sizeof(limTable[0]), longcmp); + Array.Sort(limTable, 0, nrLim); + nrLim--; + //continue; + } + else + { + k++; + //continue; + } + } + + sbr._N_L[s] = nrLim; + for (k = 0; k <= nrLim; k++) + { + sbr._f_table_lim[s, k] = limTable[k] - sbr._kx; + } + + } + } + } +} diff --git a/SharpJaad.AAC/Sbr/FilterbankTable.cs b/SharpJaad.AAC/Sbr/FilterbankTable.cs new file mode 100644 index 0000000..cfe8e2e --- /dev/null +++ b/SharpJaad.AAC/Sbr/FilterbankTable.cs @@ -0,0 +1,328 @@ +namespace SharpJaad.AAC.Sbr +{ + public static class FilterbankTable + { + public static float[] qmf_c = { + 0f, -0.00055252865047f, + -0.00056176925738f, -0.00049475180896f, + -0.00048752279712f, -0.00048937912498f, + -0.00050407143497f, -0.00052265642972f, + -0.00054665656337f, -0.00056778025613f, + -0.00058709304852f, -0.00061327473938f, + -0.00063124935319f, -0.00065403333621f, + -0.00067776907764f, -0.00069416146273f, + -0.00071577364744f, -0.00072550431222f, + -0.00074409418541f, -0.00074905980532f, + -0.0007681371927f, -0.00077248485949f, + -0.00078343322877f, -0.00077798694927f, + -0.000780366471f, -0.00078014496257f, + -0.0007757977331f, -0.00076307935757f, + -0.00075300014201f, -0.00073193571525f, + -0.00072153919876f, -0.00069179375372f, + -0.00066504150893f, -0.00063415949025f, + -0.0005946118933f, -0.00055645763906f, + -0.00051455722108f, -0.00046063254803f, + -0.00040951214522f, -0.00035011758756f, + -0.00028969811748f, -0.0002098337344f, + -0.00014463809349f, -6.173344072E-005f, + 1.349497418E-005f, 0.00010943831274f, + 0.00020430170688f, 0.00029495311041f, + 0.0004026540216f, 0.00051073884952f, + 0.00062393761391f, 0.00074580258865f, + 0.00086084433262f, 0.00098859883015f, + 0.00112501551307f, 0.00125778846475f, + 0.00139024948272f, 0.00154432198471f, + 0.00168680832531f, 0.00183482654224f, + 0.00198411407369f, 0.00214615835557f, + 0.00230172547746f, 0.00246256169126f, + 0.00262017586902f, 0.00278704643465f, + 0.00294694477165f, 0.00311254206525f, + 0.00327396134847f, 0.00344188741828f, + 0.00360082681231f, 0.00376039229104f, + 0.00392074323703f, 0.00408197531935f, + 0.0042264269227f, 0.00437307196781f, + 0.00452098527825f, 0.00466064606118f, + 0.00479325608498f, 0.00491376035745f, + 0.00503930226013f, 0.00514073539032f, + 0.00524611661324f, 0.00534716811982f, + 0.00541967759307f, 0.00548760401507f, + 0.00554757145088f, 0.00559380230045f, + 0.00562206432097f, 0.00564551969164f, + 0.00563891995151f, 0.00562661141932f, + 0.0055917128663f, 0.005540436394f, + 0.0054753783077f, 0.0053838975897f, + 0.00527157587272f, 0.00513822754514f, + 0.00498396877629f, 0.004810946906f, + 0.00460395301471f, 0.00438018617447f, + 0.0041251642327f, 0.00384564081246f, + 0.00354012465507f, 0.00320918858098f, + 0.00284467578623f, 0.00245085400321f, + 0.0020274176185f, 0.00157846825768f, + 0.00109023290512f, 0.0005832264248f, + 2.760451905E-005f, -0.00054642808664f, + -0.00115681355227f, -0.00180394725893f, + -0.00248267236449f, -0.003193377839f, + -0.00394011240522f, -0.004722259624f, + -0.00553372111088f, 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phi_re = { 1, 0, -1, 0 }; + private static int[] phi_im = { 0, 1, 0, -1 }; + private static float[] limGain = { 0.5f, 1.0f, 2.0f, 1e10f }; + private static float EPS = 1e-12f; + private float[][] G_lim_boost = new float[Constants.MAX_L_E][]; + private float[][] Q_M_lim_boost = new float[Constants.MAX_L_E][]; + private float[][] S_M_boost = new float[Constants.MAX_L_E][]; + + public HFAdjustment() + { + for (int i = 0; i < Constants.MAX_L_E; i++) + { + G_lim_boost[i] = new float[Constants.MAX_M]; + Q_M_lim_boost[i] = new float[Constants.MAX_M]; + S_M_boost[i] = new float[Constants.MAX_M]; + } + } + + public static int HfAdjustment(SBR sbr, float[,,,] Xsbr, int ch) + { + HFAdjustment adj = new HFAdjustment(); + int ret = 0; + + if (sbr._bs_frame_class[ch] == Constants.FIXFIX) + { + sbr._l_A[ch] = -1; + } + else if (sbr._bs_frame_class[ch] == Constants.VARFIX) + { + if (sbr._bs_pointer[ch] > 1) + sbr._l_A[ch] = sbr._bs_pointer[ch] - 1; + else + sbr._l_A[ch] = -1; + } + else + { + if (sbr._bs_pointer[ch] == 0) + sbr._l_A[ch] = -1; + else + sbr._l_A[ch] = sbr._L_E[ch] + 1 - sbr._bs_pointer[ch]; + } + + ret = EstimateCurrentEnvelope(sbr, adj, Xsbr, ch); + if (ret > 0) return 1; + + CalculateGain(sbr, adj, ch); + + HfAssembly(sbr, adj, Xsbr, ch); + + return 0; + } + + private static int GetSMapped(SBR sbr, int ch, int l, int current_band) + { + if (sbr._f[ch, l] == Constants.HI_RES) + { + /* in case of using f_table_high we just have 1 to 1 mapping + * from bs_add_harmonic[l][k] + */ + if (l >= sbr._l_A[ch] + || sbr._bs_add_harmonic_prev[ch, current_band] != 0 && sbr._bs_add_harmonic_flag_prev[ch]) + { + return sbr._bs_add_harmonic[ch, current_band]; + } + } + else + { + int b, lb, ub; + + /* in case of f_table_low we check if any of the HI_RES bands + * within this LO_RES band has bs_add_harmonic[l][k] turned on + * (note that borders in the LO_RES table are also present in + * the HI_RES table) + */ + + /* find first HI_RES band in current LO_RES band */ + lb = 2 * current_band - ((sbr._N_high & 1) != 0 ? 1 : 0); + /* find first HI_RES band in next LO_RES band */ + ub = 2 * (current_band + 1) - ((sbr._N_high & 1) != 0 ? 1 : 0); + + /* check all HI_RES bands in current LO_RES band for sinusoid */ + for (b = lb; b < ub; b++) + { + if (l >= sbr._l_A[ch] + || sbr._bs_add_harmonic_prev[ch, b] != 0 && sbr._bs_add_harmonic_flag_prev[ch]) + { + if (sbr._bs_add_harmonic[ch, b] == 1) + return 1; + } + } + } + + return 0; + } + + private static int EstimateCurrentEnvelope(SBR sbr, HFAdjustment adj, + float[,,,] Xsbr, int ch) + { + int m, l, j, k, k_l, k_h, p; + float nrg, div; + + if (sbr._bs_interpol_freq) + { + for (l = 0; l < sbr._L_E[ch]; l++) + { + int i, l_i, u_i; + + l_i = sbr._t_E[ch, l]; + u_i = sbr._t_E[ch, l + 1]; + + div = u_i - l_i; + + if (div == 0) + div = 1; + + for (m = 0; m < sbr._M; m++) + { + nrg = 0; + + for (i = l_i + sbr._tHFAdj; i < u_i + sbr._tHFAdj; i++) + { + nrg += Xsbr[ch, i, m + sbr._kx, 0] * Xsbr[ch, i, m + sbr._kx, 0] + + Xsbr[ch, i, m + sbr._kx, 1] * Xsbr[ch, i, m + sbr._kx, 1]; + } + + sbr._E_curr[ch, m, l] = nrg / div; + } + } + } + else + { + for (l = 0; l < sbr._L_E[ch]; l++) + { + for (p = 0; p < sbr._n[sbr._f[ch, l]]; p++) + { + k_l = sbr._f_table_res[sbr._f[ch, l], p]; + k_h = sbr._f_table_res[sbr._f[ch, l], p + 1]; + + for (k = k_l; k < k_h; k++) + { + int i, l_i, u_i; + nrg = 0; + + l_i = sbr._t_E[ch, l]; + u_i = sbr._t_E[ch, l + 1]; + + div = (u_i - l_i) * (k_h - k_l); + + if (div == 0) + div = 1; + + for (i = l_i + sbr._tHFAdj; i < u_i + sbr._tHFAdj; i++) + { + for (j = k_l; j < k_h; j++) + { + nrg += Xsbr[ch, i, j, 0] * Xsbr[ch, i, j, 0] + + Xsbr[ch, i, j, 1] * Xsbr[ch, i, j, 1]; + } + } + + sbr._E_curr[ch, k - sbr._kx, l] = nrg / div; + } + } + } + } + + return 0; + } + + private static void HfAssembly(SBR sbr, HFAdjustment adj, + float[,,,] Xsbr, int ch) + { + + int m, l, i, n; + int fIndexNoise = 0; + int fIndexSine = 0; + bool assembly_reset = false; + + float G_filt, Q_filt; + + int h_SL; + + if (sbr._Reset) + { + assembly_reset = true; + fIndexNoise = 0; + } + else + { + fIndexNoise = sbr._index_noise_prev[ch]; + } + fIndexSine = sbr._psi_is_prev[ch]; + + for (l = 0; l < sbr._L_E[ch]; l++) + { + bool no_noise = l == sbr._l_A[ch] || l == sbr._prevEnvIsShort[ch]; + + h_SL = sbr._bs_smoothing_mode ? 0 : 4; + h_SL = no_noise ? 0 : h_SL; + + if (assembly_reset) + { + for (n = 0; n < 4; n++) + { + // БЫЛО: Array.Copy(...) - вызывает RankException + // Array.Copy(adj.G_lim_boost[l], 0, sbr._G_temp_prev, 2 * 5 * ch + 5 * n + 0, sbr._M); + + // СТАЛО: Ручное копирование в 3D массив + for (int k = 0; k < sbr._M; k++) + { + sbr._G_temp_prev[ch, n, k] = adj.G_lim_boost[l][k]; + sbr._Q_temp_prev[ch, n, k] = adj.Q_M_lim_boost[l][k]; + } + } + /* reset ringbuffer index */ + sbr._GQ_ringbuf_index[ch] = 4; + assembly_reset = false; + } + + for (i = sbr._t_E[ch, l]; i < sbr._t_E[ch, l + 1]; i++) + { + /* load new values into ringbuffer */ + // БЫЛО: Array.Copy(...) + // Array.Copy(adj.G_lim_boost[l], 0, sbr._G_temp_prev, 2 * 5 * ch + 5 * sbr._GQ_ringbuf_index[ch] + 0, sbr._M); + + // СТАЛО: + int ri = sbr._GQ_ringbuf_index[ch]; + for (int k = 0; k < sbr._M; k++) + { + sbr._G_temp_prev[ch, ri, k] = adj.G_lim_boost[l][k]; + sbr._Q_temp_prev[ch, ri, k] = adj.Q_M_lim_boost[l][k]; + } + + for (m = 0; m < sbr._M; m++) + { + float[] psi = new float[2]; + + G_filt = 0; + Q_filt = 0; + + if (h_SL != 0) + { + for (n = 0; n <= 4; n++) + { + float curr_h_smooth = h_smooth[n]; + ri++; + if (ri >= 5) + ri -= 5; + G_filt += sbr._G_temp_prev[ch, ri, m] * curr_h_smooth; + Q_filt += sbr._Q_temp_prev[ch, ri, m] * curr_h_smooth; + } + } + else + { + G_filt = sbr._G_temp_prev[ch, sbr._GQ_ringbuf_index[ch], m]; + Q_filt = sbr._Q_temp_prev[ch, sbr._GQ_ringbuf_index[ch], m]; + } + + Q_filt = adj.S_M_boost[l][m] != 0 || no_noise ? 0 : Q_filt; + + /* add noise to the output */ + fIndexNoise = fIndexNoise + 1 & 511; + + /* the smoothed gain values are applied to Xsbr */ + /* V is defined, not calculated */ + Xsbr[ch, i + sbr._tHFAdj, m + sbr._kx, 0] = G_filt * Xsbr[ch, i + sbr._tHFAdj, m + sbr._kx, 0] + + Q_filt * NoiseTable.NOISE_TABLE[fIndexNoise, 0]; + if (sbr._bs_extension_id == 3 && sbr._bs_extension_data == 42) + Xsbr[ch, i + sbr._tHFAdj, m + sbr._kx, 0] = 16428320; + Xsbr[ch, i + sbr._tHFAdj, m + sbr._kx, 1] = G_filt * Xsbr[ch, i + sbr._tHFAdj, m + sbr._kx, 1] + + Q_filt * NoiseTable.NOISE_TABLE[fIndexNoise, 1]; + + { + int rev = (m + sbr._kx & 1) != 0 ? -1 : 1; + psi[0] = adj.S_M_boost[l][m] * phi_re[fIndexSine]; + Xsbr[ch, i + sbr._tHFAdj, m + sbr._kx, 0] += psi[0]; + + psi[1] = rev * adj.S_M_boost[l][m] * phi_im[fIndexSine]; + Xsbr[ch, i + sbr._tHFAdj, m + sbr._kx, 1] += psi[1]; + } + } + + fIndexSine = fIndexSine + 1 & 3; + + /* update the ringbuffer index used for filtering G and Q with h_smooth */ + sbr._GQ_ringbuf_index[ch]++; + if (sbr._GQ_ringbuf_index[ch] >= 5) + sbr._GQ_ringbuf_index[ch] = 0; + } + } + + sbr._index_noise_prev[ch] = fIndexNoise; + sbr._psi_is_prev[ch] = fIndexSine; + } + + private static void CalculateGain(SBR sbr, HFAdjustment adj, int ch) + { + int m, l, k; + + int current_t_noise_band = 0; + int S_mapped; + + float[] Q_M_lim = new float[Constants.MAX_M]; + float[] G_lim = new float[Constants.MAX_M]; + float G_boost; + float[] S_M = new float[Constants.MAX_M]; + + for (l = 0; l < sbr._L_E[ch]; l++) + { + int current_f_noise_band = 0; + int current_res_band = 0; + int current_res_band2 = 0; + int current_hi_res_band = 0; + + float delta = l == sbr._l_A[ch] || l == sbr._prevEnvIsShort[ch] ? 0 : 1; + + S_mapped = GetSMapped(sbr, ch, l, current_res_band2); + + if (sbr._t_E[ch, l + 1] > sbr._t_Q[ch, current_t_noise_band + 1]) + { + current_t_noise_band++; + } + + for (k = 0; k < sbr._N_L[sbr._bs_limiter_bands]; k++) + { + float G_max; + float den = 0; + float acc1 = 0; + float acc2 = 0; + //int current_res_band_size = 0; + + int ml1, ml2; + + ml1 = sbr._f_table_lim[sbr._bs_limiter_bands, k]; + ml2 = sbr._f_table_lim[sbr._bs_limiter_bands, k + 1]; + + + /* calculate the accumulated E_orig and E_curr over the limiter band */ + for (m = ml1; m < ml2; m++) + { + if (m + sbr._kx == sbr._f_table_res[sbr._f[ch, l], current_res_band + 1]) + { + current_res_band++; + } + acc1 += sbr._E_orig[ch, current_res_band, l]; + acc2 += sbr._E_curr[ch, m, l]; + } + + + /* calculate the maximum gain */ + /* ratio of the energy of the original signal and the energy + * of the HF generated signal + */ + G_max = (EPS + acc1) / (EPS + acc2) * limGain[sbr._bs_limiter_gains]; + G_max = Math.Min(G_max, 1e10f); + + for (m = ml1; m < ml2; m++) + { + float Q_M, G; + float Q_div, Q_div2; + int S_index_mapped; + + + /* check if m is on a noise band border */ + if (m + sbr._kx == sbr._f_table_noise[current_f_noise_band + 1]) + { + /* step to next noise band */ + current_f_noise_band++; + } + + + /* check if m is on a resolution band border */ + if (m + sbr._kx == sbr._f_table_res[sbr._f[ch, l], current_res_band2 + 1]) + { + /* step to next resolution band */ + current_res_band2++; + + /* if we move to a new resolution band, we should check if we are + * going to add a sinusoid in this band + */ + S_mapped = GetSMapped(sbr, ch, l, current_res_band2); + } + + + /* check if m is on a HI_RES band border */ + if (m + sbr._kx == sbr._f_table_res[Constants.HI_RES, current_hi_res_band + 1]) + { + /* step to next HI_RES band */ + current_hi_res_band++; + } + + + /* find S_index_mapped + * S_index_mapped can only be 1 for the m in the middle of the + * current HI_RES band + */ + S_index_mapped = 0; + if (l >= sbr._l_A[ch] + || sbr._bs_add_harmonic_prev[ch, current_hi_res_band] != 0 && sbr._bs_add_harmonic_flag_prev[ch]) + { + /* find the middle subband of the HI_RES frequency band */ + if (m + sbr._kx == sbr._f_table_res[Constants.HI_RES, current_hi_res_band + 1] + sbr._f_table_res[Constants.HI_RES, current_hi_res_band] >> 1) + S_index_mapped = sbr._bs_add_harmonic[ch, current_hi_res_band]; + } + + + /* Q_div: [0..1] (1/(1+Q_mapped)) */ + Q_div = sbr._Q_div[ch, current_f_noise_band, current_t_noise_band]; + + + /* Q_div2: [0..1] (Q_mapped/(1+Q_mapped)) */ + Q_div2 = sbr._Q_div2[ch, current_f_noise_band, current_t_noise_band]; + + + /* Q_M only depends on E_orig and Q_div2: + * since N_Q <= N_Low <= N_High we only need to recalculate Q_M on + * a change of current noise band + */ + Q_M = sbr._E_orig[ch, current_res_band2, l] * Q_div2; + + + /* S_M only depends on E_orig, Q_div and S_index_mapped: + * S_index_mapped can only be non-zero once per HI_RES band + */ + if (S_index_mapped == 0) + { + S_M[m] = 0; + } + else + { + S_M[m] = sbr._E_orig[ch, current_res_band2, l] * Q_div; + + /* accumulate sinusoid part of the total energy */ + den += S_M[m]; + } + + + /* calculate gain */ + /* ratio of the energy of the original signal and the energy + * of the HF generated signal + */ + G = sbr._E_orig[ch, current_res_band2, l] / (1.0f + sbr._E_curr[ch, m, l]); + if (S_mapped == 0 && delta == 1) + G *= Q_div; + else if (S_mapped == 1) + G *= Q_div2; + + + /* limit the additional noise energy level */ + /* and apply the limiter */ + if (G_max > G) + { + Q_M_lim[m] = Q_M; + G_lim[m] = G; + } + else + { + Q_M_lim[m] = Q_M * G_max / G; + G_lim[m] = G_max; + } + + + /* accumulate the total energy */ + den += sbr._E_curr[ch, m, l] * G_lim[m]; + if (S_index_mapped == 0 && l != sbr._l_A[ch]) + den += Q_M_lim[m]; + } + + /* G_boost: [0..2.51188643] */ + G_boost = (acc1 + EPS) / (den + EPS); + G_boost = Math.Min(G_boost, 2.51188643f /* 1.584893192 ^ 2 */); + + for (m = ml1; m < ml2; m++) + { + /* apply compensation to gain, noise floor sf's and sinusoid levels */ + adj.G_lim_boost[l][m] = (float)Math.Sqrt(G_lim[m] * G_boost); + adj.Q_M_lim_boost[l][m] = (float)Math.Sqrt(Q_M_lim[m] * G_boost); + + if (S_M[m] != 0) + { + adj.S_M_boost[l][m] = (float)Math.Sqrt(S_M[m] * G_boost); + } + else + { + adj.S_M_boost[l][m] = 0; + } + } + } + } + } + } +} diff --git a/SharpJaad.AAC/Sbr/HFGeneration.cs b/SharpJaad.AAC/Sbr/HFGeneration.cs new file mode 100644 index 0000000..b0a1287 --- /dev/null +++ b/SharpJaad.AAC/Sbr/HFGeneration.cs @@ -0,0 +1,346 @@ +using System; + +namespace SharpJaad.AAC.Sbr +{ + public class HFGeneration + { + private static int[] goalSbTab = { 21, 23, 32, 43, 46, 64, 85, 93, 128, 0, 0, 0 }; + + private class ACorrCoef + { + public float[] _r01 = new float[2]; + public float[] _r02 = new float[2]; + public float[] _r11 = new float[2]; + public float[] _r12 = new float[2]; + public float[] _r22 = new float[2]; + public float _det; + } + + public static void HfGeneration(SBR sbr, float[,,,] Xlow, float[,,,] Xhigh, int ch) + { + int l, i, x; + float[,] alpha_0 = new float[64, 2], alpha_1 = new float[64, 2]; + + int offset = sbr._tHFAdj; + int first = sbr._t_E[ch, 0]; + int last = sbr._t_E[ch, sbr._L_E[ch]]; + + CalcChirpFactors(sbr, ch); + + if (ch == 0 && sbr._Reset) + PatchConstruction(sbr); + + /* calculate the prediction coefficients */ + + /* actual HF generation */ + for (i = 0; i < sbr._noPatches; i++) + { + for (x = 0; x < sbr._patchNoSubbands[i]; x++) + { + float a0_r, a0_i, a1_r, a1_i; + float bw, bw2; + int q, p, k, g; + + /* find the low and high band for patching */ + k = sbr._kx + x; + for (q = 0; q < i; q++) + { + k += sbr._patchNoSubbands[q]; + } + p = sbr._patchStartSubband[i] + x; + + g = sbr._table_map_k_to_g[k]; + + bw = sbr._bwArray[ch, g]; + bw2 = bw * bw; + + /* do the patching */ + /* with or without filtering */ + if (bw2 > 0) + { + float temp1_r, temp2_r, temp3_r; + float temp1_i, temp2_i, temp3_i; + CalcPredictionCoef(sbr, Xlow, ch, alpha_0, alpha_1, p); + + a0_r = alpha_0[p, 0] * bw; + a1_r = alpha_1[p, 0] * bw2; + a0_i = alpha_0[p, 1] * bw; + a1_i = alpha_1[p, 1] * bw2; + + temp2_r = Xlow[ch, first - 2 + offset, p, 0]; + temp3_r = Xlow[ch, first - 1 + offset, p, 0]; + temp2_i = Xlow[ch, first - 2 + offset, p, 1]; + temp3_i = Xlow[ch, first - 1 + offset, p, 1]; + for (l = first; l < last; l++) + { + temp1_r = temp2_r; + temp2_r = temp3_r; + temp3_r = Xlow[ch, l + offset, p, 0]; + temp1_i = temp2_i; + temp2_i = temp3_i; + temp3_i = Xlow[ch, l + offset, p, 1]; + + Xhigh[ch, l + offset, k, 0] + = temp3_r + + (a0_r * temp2_r + - a0_i * temp2_i + + a1_r * temp1_r + - a1_i * temp1_i); + Xhigh[ch, l + offset, k, 1] + = temp3_i + + (a0_i * temp2_r + + a0_r * temp2_i + + a1_i * temp1_r + + a1_r * temp1_i); + } + } + else + { + for (l = first; l < last; l++) + { + Xhigh[ch, l + offset, k, 0] = Xlow[ch, l + offset, p, 0]; + Xhigh[ch, l + offset, k, 1] = Xlow[ch, l + offset, p, 1]; + } + } + } + } + + if (sbr._Reset) + { + FBT.LimiterFrequencyTable(sbr); + } + } + + private static void AutoCorrelation(SBR sbr, ACorrCoef ac, float[,,,] buffer, int ch, int bd, int len) + { + float r01r = 0, r01i = 0, r02r = 0, r02i = 0, r11r = 0; + float temp1_r, temp1_i, temp2_r, temp2_i, temp3_r, temp3_i, temp4_r, temp4_i, temp5_r, temp5_i; + float rel = 1.0f / (1 + 1e-6f); + int j; + int offset = sbr._tHFAdj; + + temp2_r = buffer[ch, offset - 2, bd, 0]; + temp2_i = buffer[ch, offset - 2, bd, 1]; + temp3_r = buffer[ch, offset - 1, bd, 0]; + temp3_i = buffer[ch, offset - 1, bd, 1]; + // Save these because they are needed after loop + temp4_r = temp2_r; + temp4_i = temp2_i; + temp5_r = temp3_r; + temp5_i = temp3_i; + + for (j = offset; j < len + offset; j++) + { + temp1_r = temp2_r; // temp1_r = QMF_RE(buffer[j-2][bd]; + temp1_i = temp2_i; // temp1_i = QMF_IM(buffer[j-2][bd]; + temp2_r = temp3_r; // temp2_r = QMF_RE(buffer[j-1][bd]; + temp2_i = temp3_i; // temp2_i = QMF_IM(buffer[j-1][bd]; + temp3_r = buffer[ch, j, bd, 0]; + temp3_i = buffer[ch, j, bd, 1]; + r01r += temp3_r * temp2_r + temp3_i * temp2_i; + r01i += temp3_i * temp2_r - temp3_r * temp2_i; + r02r += temp3_r * temp1_r + temp3_i * temp1_i; + r02i += temp3_i * temp1_r - temp3_r * temp1_i; + r11r += temp2_r * temp2_r + temp2_i * temp2_i; + } + + // These are actual values in temporary variable at this point + // temp1_r = QMF_RE(buffer[len+offset-1-2][bd]; + // temp1_i = QMF_IM(buffer[len+offset-1-2][bd]; + // temp2_r = QMF_RE(buffer[len+offset-1-1][bd]; + // temp2_i = QMF_IM(buffer[len+offset-1-1][bd]; + // temp3_r = QMF_RE(buffer[len+offset-1][bd]); + // temp3_i = QMF_IM(buffer[len+offset-1][bd]); + // temp4_r = QMF_RE(buffer[offset-2][bd]); + // temp4_i = QMF_IM(buffer[offset-2][bd]); + // temp5_r = QMF_RE(buffer[offset-1][bd]); + // temp5_i = QMF_IM(buffer[offset-1][bd]); + ac._r12[0] = r01r + - (temp3_r * temp2_r + temp3_i * temp2_i) + + (temp5_r * temp4_r + temp5_i * temp4_i); + ac._r12[1] = r01i + - (temp3_i * temp2_r - temp3_r * temp2_i) + + (temp5_i * temp4_r - temp5_r * temp4_i); + ac._r22[0] = r11r + - (temp2_r * temp2_r + temp2_i * temp2_i) + + (temp4_r * temp4_r + temp4_i * temp4_i); + + ac._r01[0] = r01r; + ac._r01[1] = r01i; + ac._r02[0] = r02r; + ac._r02[1] = r02i; + ac._r11[0] = r11r; + + ac._det = ac._r11[0] * ac._r22[0] - rel * (ac._r12[0] * ac._r12[0] + ac._r12[1] * ac._r12[1]); + } + + /* calculate linear prediction coefficients using the covariance method */ + private static void CalcPredictionCoef(SBR sbr, float[,,,] Xlow, int ch, float[,] alpha_0, float[,] alpha_1, int k) + { + float tmp; + ACorrCoef ac = new ACorrCoef(); + + AutoCorrelation(sbr, ac, Xlow, ch, k, sbr._numTimeSlotsRate + 6); + + if (ac._det == 0) + { + alpha_1[k, 0] = 0; + alpha_1[k, 1] = 0; + } + else + { + tmp = 1.0f / ac._det; + alpha_1[k, 0] = (ac._r01[0] * ac._r12[0] - ac._r01[1] * ac._r12[1] - ac._r02[0] * ac._r11[0]) * tmp; + alpha_1[k, 1] = (ac._r01[1] * ac._r12[0] + ac._r01[0] * ac._r12[1] - ac._r02[1] * ac._r11[0]) * tmp; + } + + if (ac._r11[0] == 0) + { + alpha_0[k, 0] = 0; + alpha_0[k, 1] = 0; + } + else + { + tmp = 1.0f / ac._r11[0]; + alpha_0[k, 0] = -(ac._r01[0] + alpha_1[k, 0] * ac._r12[0] + alpha_1[k, 1] * ac._r12[1]) * tmp; + alpha_0[k, 1] = -(ac._r01[1] + alpha_1[k, 1] * ac._r12[0] - alpha_1[k, 0] * ac._r12[1]) * tmp; + } + + if (alpha_0[k, 0] * alpha_0[k, 0] + alpha_0[k, 1] * alpha_0[k, 1] >= 16.0f + || alpha_1[k, 0] * alpha_1[k, 0] + alpha_1[k, 1] * alpha_1[k, 1] >= 16.0f) + { + alpha_0[k, 0] = 0; + alpha_0[k, 1] = 0; + alpha_1[k, 0] = 0; + alpha_1[k, 1] = 0; + } + } + + /* FIXED POINT: bwArray = COEF */ + private static float MapNewBw(int invf_mode, int invf_mode_prev) + { + switch (invf_mode) + { + case 1: /* LOW */ + + if (invf_mode_prev == 0) /* NONE */ + return 0.6f; + else + return 0.75f; + + case 2: /* MID */ + + return 0.9f; + + case 3: /* HIGH */ + + return 0.98f; + + default: /* NONE */ + + if (invf_mode_prev == 1) /* LOW */ + return 0.6f; + else + return 0.0f; + } + } + + /* FIXED POINT: bwArray = COEF */ + private static void CalcChirpFactors(SBR sbr, int ch) + { + int i; + + for (i = 0; i < sbr._N_Q; i++) + { + sbr._bwArray[ch, i] = MapNewBw(sbr._bs_invf_mode[ch, i], sbr._bs_invf_mode_prev[ch, i]); + + if (sbr._bwArray[ch, i] < sbr._bwArray_prev[ch, i]) + sbr._bwArray[ch, i] = sbr._bwArray[ch, i] * 0.75f + sbr._bwArray_prev[ch, i] * 0.25f; + else + sbr._bwArray[ch, i] = sbr._bwArray[ch, i] * 0.90625f + sbr._bwArray_prev[ch, i] * 0.09375f; + + if (sbr._bwArray[ch, i] < 0.015625f) + sbr._bwArray[ch, i] = 0.0f; + + if (sbr._bwArray[ch, i] >= 0.99609375f) + sbr._bwArray[ch, i] = 0.99609375f; + + sbr._bwArray_prev[ch, i] = sbr._bwArray[ch, i]; + sbr._bs_invf_mode_prev[ch, i] = sbr._bs_invf_mode[ch, i]; + } + } + + private static void PatchConstruction(SBR sbr) + { + int i, k; + int odd, sb; + int msb = sbr._k0; + int usb = sbr._kx; + /* (uint8_t)(2.048e6/sbr.sample_rate + 0.5); */ + int goalSb = goalSbTab[(int)sbr._sampleRate]; + + sbr._noPatches = 0; + + if (goalSb < sbr._kx + sbr._M) + { + for (i = 0, k = 0; sbr._f_master[i] < goalSb; i++) + { + k = i + 1; + } + } + else + { + k = sbr._N_master; + } + + if (sbr._N_master == 0) + { + sbr._noPatches = 0; + sbr._patchNoSubbands[0] = 0; + sbr._patchStartSubband[0] = 0; + + return; + } + + do + { + int j = k + 1; + + do + { + j--; + + sb = sbr._f_master[j]; + odd = (sb - 2 + sbr._k0) % 2; + } + while (sb > sbr._k0 - 1 + msb - odd); + + sbr._patchNoSubbands[sbr._noPatches] = Math.Max(sb - usb, 0); + sbr._patchStartSubband[sbr._noPatches] = sbr._k0 - odd + - sbr._patchNoSubbands[sbr._noPatches]; + + if (sbr._patchNoSubbands[sbr._noPatches] > 0) + { + usb = sb; + msb = sb; + sbr._noPatches++; + } + else + { + msb = sbr._kx; + } + + if (sbr._f_master[k] - sb < 3) + k = sbr._N_master; + } + while (sb != sbr._kx + sbr._M); + + if (sbr._patchNoSubbands[sbr._noPatches - 1] < 3 && sbr._noPatches > 1) + { + sbr._noPatches--; + } + + sbr._noPatches = Math.Min(sbr._noPatches, 5); + } + } +} diff --git a/SharpJaad.AAC/Sbr/HuffmanTables.cs b/SharpJaad.AAC/Sbr/HuffmanTables.cs new file mode 100644 index 0000000..af231ee --- /dev/null +++ b/SharpJaad.AAC/Sbr/HuffmanTables.cs @@ -0,0 +1,629 @@ +namespace SharpJaad.AAC.Sbr +{ + public static class HuffmanTables + { + public static int[][] T_HUFFMAN_ENV_1_5DB = { + new int[] {1, 2}, + new int[] {-64, -65}, + new int[] {3, 4}, + new int[] {-63, -66}, + new int[] {5, 6}, + new int[] {-62, -67}, + new int[] {7, 8}, + new int[] {-61, -68}, + new int[] {9, 10}, + new int[] {-60, -69}, + new int[] {11, 12}, + new int[] {-59, -70}, + new int[] {13, 14}, + new int[] {-58, -71}, + new int[] {15, 16}, + new int[] {-57, -72}, + new int[] {17, 18}, + new int[] {-73, -56}, + new int[] {19, 21}, + new int[] {-74, 20}, + new int[] {-55, -75}, + new int[] {22, 26}, + new int[] {23, 24}, + new int[] {-54, -76}, + new int[] {-77, 25}, + new int[] {-53, -78}, + new int[] {27, 34}, + new int[] {28, 29}, + new int[] {-52, -79}, + new int[] {30, 31}, + new int[] {-80, -51}, + new int[] {32, 33}, + new int[] {-83, -82}, + new int[] {-81, -50}, + new int[] {35, 57}, + new int[] {36, 40}, + new int[] {37, 38}, + new int[] {-88, -84}, + new int[] {-48, 39}, + new int[] {-90, -85}, + new int[] {41, 46}, + new int[] {42, 43}, + new int[] {-49, -87}, + new int[] {44, 45}, + new int[] {-89, -86}, + new int[] {-124, -123}, + new int[] {47, 50}, + new int[] {48, 49}, + new int[] {-122, -121}, + new int[] {-120, -119}, + new int[] {51, 54}, + new int[] {52, 53}, + new int[] {-118, -117}, + new int[] {-116, -115}, + new int[] {55, 56}, + new int[] {-114, -113}, + new int[] {-112, -111}, + new int[] {58, 89}, + new int[] {59, 74}, + new int[] {60, 67}, + new int[] {61, 64}, + new int[] {62, 63}, + new int[] {-110, -109}, + new int[] {-108, -107}, + new int[] {65, 66}, + new int[] {-106, -105}, + new int[] {-104, -103}, + new int[] {68, 71}, + new int[] {69, 70}, + new int[] {-102, -101}, + new int[] {-100, -99}, + new int[] {72, 73}, + new int[] {-98, -97}, + new int[] {-96, -95}, + new int[] {75, 82}, + new int[] {76, 79}, + new int[] {77, 78}, + new int[] {-94, -93}, + new int[] {-92, -91}, + new int[] {80, 81}, + new int[] {-47, -46}, + new int[] {-45, -44}, + new int[] {83, 86}, + new int[] {84, 85}, + new int[] {-43, -42}, + new int[] {-41, -40}, + new int[] {87, 88}, + new int[] {-39, -38}, + new int[] {-37, -36}, + new int[] {90, 105}, + new int[] {91, 98}, + new int[] {92, 95}, + new int[] {93, 94}, + new int[] {-35, -34}, + new int[] {-33, -32}, + new int[] {96, 97}, + new int[] {-31, -30}, + new int[] {-29, -28}, + new int[] {99, 102}, + new int[] {100, 101}, + new int[] {-27, -26}, + new int[] {-25, -24}, + new int[] {103, 104}, + new int[] {-23, -22}, + new int[] {-21, -20}, + new int[] {106, 113}, + new int[] {107, 110}, + new int[] {108, 109}, + new int[] {-19, -18}, + new int[] {-17, -16}, + new int[] {111, 112}, + new int[] {-15, -14}, + new int[] {-13, -12}, + new int[] {114, 117}, + new int[] {115, 116}, + new int[] {-11, -10}, + new int[] {-9, -8}, + new int[] {118, 119}, + new int[] {-7, -6}, + new int[] {-5, -4} + }; + + public static int[][] F_HUFFMAN_ENV_1_5DB = { + new int[] {1, 2}, + new int[] {-64, -65}, + new int[] {3, 4}, + new int[] {-63, -66}, + new int[] {5, 6}, + new int[] {-67, -62}, + new int[] {7, 8}, + new int[] {-68, -61}, + new int[] {9, 10}, + new int[] {-69, -60}, + new int[] {11, 13}, + new int[] {-70, 12}, + new int[] {-59, -71}, + new int[] {14, 16}, + new int[] {-58, 15}, + new int[] {-72, -57}, + new int[] {17, 19}, + new int[] {-73, 18}, + new int[] {-56, -74}, + new int[] {20, 23}, + new int[] {21, 22}, + new int[] {-55, -75}, + new int[] {-54, -53}, + new int[] {24, 27}, + new int[] {25, 26}, + new int[] {-76, -52}, + new int[] {-77, -51}, + new int[] {28, 31}, + new int[] {29, 30}, + new int[] {-50, -78}, + new int[] {-79, -49}, + new int[] {32, 36}, + new int[] {33, 34}, + new int[] {-48, -47}, + new int[] {-80, 35}, + new int[] {-81, -82}, + new int[] {37, 47}, + new int[] {38, 41}, + new int[] {39, 40}, + new int[] {-83, -46}, + new int[] {-45, -84}, + new int[] {42, 44}, + new int[] {-85, 43}, + new int[] {-44, -43}, + new int[] {45, 46}, + new int[] {-88, -87}, + new int[] {-86, -90}, + new int[] {48, 66}, + new int[] {49, 56}, + new int[] {50, 53}, + new int[] {51, 52}, + new int[] {-92, -42}, + new int[] {-41, -39}, + new int[] {54, 55}, + new int[] {-105, -89}, + new int[] {-38, -37}, + new int[] {57, 60}, + new int[] {58, 59}, + new int[] {-94, -91}, + new int[] {-40, -36}, + new int[] {61, 63}, + new int[] {-20, 62}, + new int[] {-115, -110}, + new int[] {64, 65}, + new int[] {-108, -107}, + new int[] {-101, -97}, + new int[] {67, 89}, + new int[] {68, 75}, + new int[] {69, 72}, + new int[] {70, 71}, + new int[] {-95, -93}, + new int[] {-34, -27}, + new int[] {73, 74}, + new int[] {-22, -17}, + new int[] {-16, -124}, + new int[] {76, 82}, + new int[] {77, 79}, + new int[] {-123, 78}, + new int[] {-122, -121}, + new int[] {80, 81}, + new int[] {-120, -119}, + new int[] {-118, -117}, + new int[] {83, 86}, + new int[] {84, 85}, + new int[] {-116, -114}, + new int[] {-113, -112}, + new int[] {87, 88}, + new int[] {-111, -109}, + new int[] {-106, -104}, + new int[] {90, 105}, + new int[] {91, 98}, + new int[] {92, 95}, + new int[] {93, 94}, + new int[] {-103, -102}, + new int[] {-100, -99}, + new int[] {96, 97}, + new int[] {-98, -96}, + new int[] {-35, -33}, + new int[] {99, 102}, + new int[] {100, 101}, + new int[] {-32, -31}, + new int[] {-30, -29}, + new int[] {103, 104}, + new int[] {-28, -26}, + new int[] {-25, -24}, + new int[] {106, 113}, + new int[] {107, 110}, + new int[] {108, 109}, + new int[] {-23, -21}, + new int[] {-19, -18}, + new int[] {111, 112}, + new int[] {-15, -14}, + new int[] {-13, -12}, + new int[] {114, 117}, + new int[] {115, 116}, + new int[] {-11, -10}, + new int[] {-9, -8}, + new int[] {118, 119}, + new int[] {-7, -6}, + new int[] {-5, -4} + }; + + public static int[][] T_HUFFMAN_ENV_BAL_1_5DB = { + new int[] {-64, 1}, + new int[] {-63, 2}, + new int[] {-65, 3}, + new int[] {-62, 4}, + new int[] {-66, 5}, + new int[] {-61, 6}, + new int[] {-67, 7}, + new int[] {-60, 8}, + new int[] {-68, 9}, + new int[] {10, 11}, + new int[] {-69, -59}, + new int[] {12, 13}, + new int[] {-70, -58}, + new int[] {14, 28}, + new int[] {15, 21}, + new int[] {16, 18}, + new int[] {-57, 17}, + new int[] {-71, -56}, + new int[] {19, 20}, + new int[] {-88, -87}, + new int[] {-86, -85}, + new int[] {22, 25}, + new int[] {23, 24}, + new int[] {-84, -83}, + new int[] {-82, -81}, + new int[] {26, 27}, + new int[] {-80, -79}, + new int[] {-78, -77}, + new int[] {29, 36}, + new int[] {30, 33}, + new int[] {31, 32}, + new int[] {-76, -75}, + new int[] {-74, -73}, + new int[] {34, 35}, + new int[] {-72, -55}, + new int[] {-54, -53}, + new int[] {37, 41}, + new int[] {38, 39}, + new int[] {-52, -51}, + new int[] {-50, 40}, + new int[] {-49, -48}, + new int[] {42, 45}, + new int[] {43, 44}, + new int[] {-47, -46}, + new int[] {-45, -44}, + new int[] {46, 47}, + new int[] {-43, -42}, + new int[] {-41, -40} + }; + + public static int[][] F_HUFFMAN_ENV_BAL_1_5DB = { + new int [] {-64, 1}, + new int [] {-65, 2}, + new int [] {-63, 3}, + new int [] {-66, 4}, + new int [] {-62, 5}, + new int [] {-61, 6}, + new int [] {-67, 7}, + new int [] {-68, 8}, + new int [] {-60, 9}, + new int [] {10, 11}, + new int [] {-69, -59}, + new int [] {-70, 12}, + new int [] {-58, 13}, + new int [] {14, 17}, + new int [] {-71, 15}, + new int [] {-57, 16}, + new int [] {-56, -73}, + new int [] {18, 32}, + new int [] {19, 25}, + new int [] {20, 22}, + new int [] {-72, 21}, + new int [] {-88, -87}, + new int [] {23, 24}, + new int [] {-86, -85}, + new int [] {-84, -83}, + new int [] {26, 29}, + new int [] {27, 28}, + new int [] {-82, -81}, + new int [] {-80, -79}, + new int [] {30, 31}, + new int [] {-78, -77}, + new int [] {-76, -75}, + new int [] {33, 40}, + new int [] {34, 37}, + new int [] {35, 36}, + new int [] {-74, -55}, + new int [] {-54, -53}, + new int [] {38, 39}, + new int [] {-52, -51}, + new int [] {-50, -49}, + new int [] {41, 44}, + new int [] {42, 43}, + new int [] {-48, -47}, + new int [] {-46, -45}, + new int [] {45, 46}, + new int [] {-44, -43}, + new int [] {-42, 47}, + new int [] {-41, -40} + }; + + public static int[][] T_HUFFMAN_ENV_3_0DB = { + new int [] {-64, 1}, + new int [] {-65, 2}, + new int [] {-63, 3}, + new int [] {-66, 4}, + new int [] {-62, 5}, + new int [] {-67, 6}, + new int [] {-61, 7}, + new int [] {-68, 8}, + new int [] {-60, 9}, + new int [] {10, 11}, + new int [] {-69, -59}, + new int [] {12, 14}, + new int [] {-70, 13}, + new int [] {-71, -58}, + new int [] {15, 18}, + new int [] {16, 17}, + new int [] {-72, -57}, + new int [] {-73, -74}, + new int [] {19, 22}, + new int [] {-56, 20}, + new int [] {-55, 21}, + new int [] {-54, -77}, + new int [] {23, 31}, + new int [] {24, 25}, + new int [] {-75, -76}, + new int [] {26, 27}, + new int [] {-78, -53}, + new int [] {28, 29}, + new int [] {-52, -95}, + new int [] {-94, 30}, + new int [] {-93, -92}, + new int [] {32, 47}, + new int [] {33, 40}, + new int [] {34, 37}, + new int [] {35, 36}, + new int [] {-91, -90}, + new int [] {-89, -88}, + new int [] {38, 39}, + new int [] {-87, -86}, + new int [] {-85, -84}, + new int [] {41, 44}, + new int [] {42, 43}, + new int [] {-83, -82}, + new int [] {-81, -80}, + new int [] {45, 46}, + new int [] {-79, -51}, + new int [] {-50, -49}, + new int [] {48, 55}, + new int [] {49, 52}, + new int [] {50, 51}, + new int [] {-48, -47}, + new int [] {-46, -45}, + new int [] {53, 54}, + new int [] {-44, -43}, + new int [] {-42, -41}, + new int [] {56, 59}, + new int [] {57, 58}, + new int [] {-40, -39}, + new int [] {-38, -37}, + new int [] {60, 61}, + new int [] {-36, -35}, + new int [] {-34, -33} + }; + + public static int[][] F_HUFFMAN_ENV_3_0DB = { + new int[] {-64, 1}, + new int[] {-65, 2}, + new int[] {-63, 3}, + new int[] {-66, 4}, + new int[] {-62, 5}, + new int[] {-67, 6}, + new int[] {7, 8}, + new int[] {-61, -68}, + new int[] {9, 10}, + new int[] {-60, -69}, + new int[] {11, 12}, + new int[] {-59, -70}, + new int[] {13, 14}, + new int[] {-58, -71}, + new int[] {15, 16}, + new int[] {-57, -72}, + new int[] {17, 19}, + new int[] {-56, 18}, + new int[] {-55, -73}, + new int[] {20, 24}, + new int[] {21, 22}, + new int[] {-74, -54}, + new int[] {-53, 23}, + new int[] {-75, -76}, + new int[] {25, 30}, + new int[] {26, 27}, + new int[] {-52, -51}, + new int[] {28, 29}, + new int[] {-77, -79}, + new int[] {-50, -49}, + new int[] {31, 39}, + new int[] {32, 35}, + new int[] {33, 34}, + new int[] {-78, -46}, + new int[] {-82, -88}, + new int[] {36, 37}, + new int[] {-83, -48}, + new int[] {-47, 38}, + new int[] {-86, -85}, + new int[] {40, 47}, + new int[] {41, 44}, + new int[] {42, 43}, + new int[] {-80, -44}, + new int[] {-43, -42}, + new int[] {45, 46}, + new int[] {-39, -87}, + new int[] {-84, -40}, + new int[] {48, 55}, + new int[] {49, 52}, + new int[] {50, 51}, + new int[] {-95, -94}, + new int[] {-93, -92}, + new int[] {53, 54}, + new int[] {-91, -90}, + new int[] {-89, -81}, + new int[] {56, 59}, + new int[] {57, 58}, + new int[] {-45, -41}, + new int[] {-38, -37}, + new int[] {60, 61}, + new int[] {-36, -35}, + new int[] {-34, -33} + }; + + public static int[][] T_HUFFMAN_ENV_BAL_3_0DB = { + new int[] {-64, 1}, + new int[] {-63, 2}, + new int[] {-65, 3}, + new int[] {-66, 4}, + new int[] {-62, 5}, + new int[] {-61, 6}, + new int[] {-67, 7}, + new int[] {-68, 8}, + new int[] {-60, 9}, + new int[] {10, 16}, + new int[] {11, 13}, + new int[] {-69, 12}, + new int[] {-76, -75}, + new int[] {14, 15}, + new int[] {-74, -73}, + new int[] {-72, -71}, + new int[] {17, 20}, + new int[] {18, 19}, + new int[] {-70, -59}, + new int[] {-58, -57}, + new int[] {21, 22}, + new int[] {-56, -55}, + new int[] {-54, 23}, + new int[] {-53, -52} + }; + + public static int[][] F_HUFFMAN_ENV_BAL_3_0DB = { + new int[] {-64, 1}, + new int[] {-65, 2}, + new int[] {-63, 3}, + new int[] {-66, 4}, + new int[] {-62, 5}, + new int[] {-61, 6}, + new int[] {-67, 7}, + new int[] {-68, 8}, + new int[] {-60, 9}, + new int[] {10, 13}, + new int[] {-69, 11}, + new int[] {-59, 12}, + new int[] {-58, -76}, + new int[] {14, 17}, + new int[] {15, 16}, + new int[] {-75, -74}, + new int[] {-73, -72}, + new int[] {18, 21}, + new int[] {19, 20}, + new int[] {-71, -70}, + new int[] {-57, -56}, + new int[] {22, 23}, + new int[] {-55, -54}, + new int[] {-53, -52} + }; + + public static int[][] T_HUFFMAN_NOISE_3_0DB = { + new int[] {-64, 1}, + new int[] {-63, 2}, + new int[] {-65, 3}, + new int[] {-66, 4}, + new int[] {-62, 5}, + new int[] {-67, 6}, + new int[] {7, 8}, + new int[] {-61, -68}, + new int[] {9, 30}, + new int[] {10, 15}, + new int[] {-60, 11}, + new int[] {-69, 12}, + new int[] {13, 14}, + new int[] {-59, -53}, + new int[] {-95, -94}, + new int[] {16, 23}, + new int[] {17, 20}, + new int[] {18, 19}, + new int[] {-93, -92}, + new int[] {-91, -90}, + new int[] {21, 22}, + new int[] {-89, -88}, + new int[] {-87, -86}, + new int[] {24, 27}, + new int[] {25, 26}, + new int[] {-85, -84}, + new int[] {-83, -82}, + new int[] {28, 29}, + new int[] {-81, -80}, + new int[] {-79, -78}, + new int[] {31, 46}, + new int[] {32, 39}, + new int[] {33, 36}, + new int[] {34, 35}, + new int[] {-77, -76}, + new int[] {-75, -74}, + new int[] {37, 38}, + new int[] {-73, -72}, + new int[] {-71, -70}, + new int[] {40, 43}, + new int[] {41, 42}, + new int[] {-58, -57}, + new int[] {-56, -55}, + new int[] {44, 45}, + new int[] {-54, -52}, + new int[] {-51, -50}, + new int[] {47, 54}, + new int[] {48, 51}, + new int[] {49, 50}, + new int[] {-49, -48}, + new int[] {-47, -46}, + new int[] {52, 53}, + new int[] {-45, -44}, + new int[] {-43, -42}, + new int[] {55, 58}, + new int[] {56, 57}, + new int[] {-41, -40}, + new int[] {-39, -38}, + new int[] {59, 60}, + new int[] {-37, -36}, + new int[] {-35, 61}, + new int[] {-34, -33} + }; + + public static int[][] T_HUFFMAN_NOISE_BAL_3_0DB = { + new int[] {-64, 1}, + new int[] {-65, 2}, + new int[] {-63, 3}, + new int[] {4, 9}, + new int[] {-66, 5}, + new int[] {-62, 6}, + new int[] {7, 8}, + new int[] {-76, -75}, + new int[] {-74, -73}, + new int[] {10, 17}, + new int[] {11, 14}, + new int[] {12, 13}, + new int[] {-72, -71}, + new int[] {-70, -69}, + new int[] {15, 16}, + new int[] {-68, -67}, + new int[] {-61, -60}, + new int[] {18, 21}, + new int[] {19, 20}, + new int[] {-59, -58}, + new int[] {-57, -56}, + new int[] {22, 23}, + new int[] {-55, -54}, + new int[] {-53, -52} + }; + } +} \ No newline at end of file diff --git a/SharpJaad.AAC/Sbr/NoiseEnvelope.cs b/SharpJaad.AAC/Sbr/NoiseEnvelope.cs new file mode 100644 index 0000000..27aecee --- /dev/null +++ b/SharpJaad.AAC/Sbr/NoiseEnvelope.cs @@ -0,0 +1,499 @@ +namespace SharpJaad.AAC.Sbr +{ + public static class NoiseEnvelope + { + private static float[] E_deq_tab = { + 64.0f, 128.0f, 256.0f, 512.0f, 1024.0f, 2048.0f, 4096.0f, 8192.0f, + 16384.0f, 32768.0f, 65536.0f, 131072.0f, 262144.0f, 524288.0f, 1.04858E+006f, 2.09715E+006f, + 4.1943E+006f, 8.38861E+006f, 1.67772E+007f, 3.35544E+007f, 6.71089E+007f, 1.34218E+008f, 2.68435E+008f, 5.36871E+008f, + 1.07374E+009f, 2.14748E+009f, 4.29497E+009f, 8.58993E+009f, 1.71799E+010f, 3.43597E+010f, 6.87195E+010f, 1.37439E+011f, + 2.74878E+011f, 5.49756E+011f, 1.09951E+012f, 2.19902E+012f, 4.39805E+012f, 8.79609E+012f, 1.75922E+013f, 3.51844E+013f, + 7.03687E+013f, 1.40737E+014f, 2.81475E+014f, 5.6295E+014f, 1.1259E+015f, 2.2518E+015f, 4.5036E+015f, 9.0072E+015f, + 1.80144E+016f, 3.60288E+016f, 7.20576E+016f, 1.44115E+017f, 2.8823E+017f, 5.76461E+017f, 1.15292E+018f, 2.30584E+018f, + 4.61169E+018f, 9.22337E+018f, 1.84467E+019f, 3.68935E+019f, 7.3787E+019f, 1.47574E+020f, 2.95148E+020f, 5.90296E+020f + }; + + /* table for Q_div2 values when no coupling */ + private static float[] Q_div2_tab = { + 0.984615f, 0.969697f, + 0.941176f, 0.888889f, + 0.8f, 0.666667f, + 0.5f, 0.333333f, + 0.2f, 0.111111f, + 0.0588235f, 0.030303f, + 0.0153846f, 0.00775194f, + 0.00389105f, 0.00194932f, + 0.00097561f, 0.000488043f, + 0.000244081f, 0.000122055f, + 6.10314E-005f, 3.05166E-005f, + 1.52586E-005f, 7.62934E-006f, + 3.81468E-006f, 1.90734E-006f, + 9.53673E-007f, 4.76837E-007f, + 2.38419E-007f, 1.19209E-007f, + 5.96046E-008f}; + + private static float[][] Q_div2_tab_left = { + new float[] {0.0302959f, 0.111015f, 0.332468f, 0.663212f, 0.882759f, 0.962406f, 0.984615f, 0.990329f, 0.991768f, 0.992128f, 0.992218f, 0.992241f, 0.992246f}, + new float[] {0.0153809f, 0.0587695f, 0.199377f, 0.496124f, 0.790123f, 0.927536f, 0.969697f, 0.980843f, 0.98367f, 0.984379f, 0.984556f, 0.984601f, 0.984612f}, + new float[] {0.00775006f, 0.0302744f, 0.110727f, 0.329897f, 0.653061f, 0.864865f, 0.941176f, 0.962406f, 0.967864f, 0.969238f, 0.969582f, 0.969668f, 0.96969f}, + new float[] {0.0038901f, 0.0153698f, 0.0586081f, 0.197531f, 0.484848f, 0.761905f, 0.888889f, 0.927536f, 0.937729f, 0.940312f, 0.94096f, 0.941122f, 0.941163f}, + new float[] {0.00194884f, 0.00774443f, 0.0301887f, 0.109589f, 0.32f, 0.615385f, 0.8f, 0.864865f, 0.882759f, 0.887348f, 0.888503f, 0.888792f, 0.888865f}, + new float[] {0.000975372f, 0.00388727f, 0.0153257f, 0.057971f, 0.190476f, 0.444444f, 0.666667f, 0.761905f, 0.790123f, 0.797508f, 0.799375f, 0.799844f, 0.799961f}, + new float[] {0.000487924f, 0.00194742f, 0.00772201f, 0.0298507f, 0.105263f, 0.285714f, 0.5f, 0.615385f, 0.653061f, 0.663212f, 0.6658f, 0.66645f, 0.666612f}, + new float[] {0.000244021f, 0.000974659f, 0.00387597f, 0.0151515f, 0.0555556f, 0.166667f, 0.333333f, 0.444444f, 0.484848f, 0.496124f, 0.499025f, 0.499756f, 0.499939f}, + new float[] {0.000122026f, 0.000487567f, 0.00194175f, 0.00763359f, 0.0285714f, 0.0909091f, 0.2f, 0.285714f, 0.32f, 0.329897f, 0.332468f, 0.333116f, 0.333279f}, + new float[] {6.10165E-005f, 0.000243843f, 0.000971817f, 0.00383142f, 0.0144928f, 0.047619f, 0.111111f, 0.166667f, 0.190476f, 0.197531f, 0.199377f, 0.199844f, 0.199961f}, + new float[] {3.05092E-005f, 0.000121936f, 0.000486145f, 0.00191939f, 0.00729927f, 0.0243902f, 0.0588235f, 0.0909091f, 0.105263f, 0.109589f, 0.110727f, 0.111015f, 0.111087f}, + new float[] {1.52548E-005f, 6.09719E-005f, 0.000243132f, 0.000960615f, 0.003663f, 0.0123457f, 0.030303f, 0.047619f, 0.0555556f, 0.057971f, 0.0586081f, 0.0587695f, 0.05881f}, + new float[] {7.62747E-006f, 3.04869E-005f, 0.000121581f, 0.000480538f, 0.00183486f, 0.00621118f, 0.0153846f, 0.0243902f, 0.0285714f, 0.0298507f, 0.0301887f, 0.0302744f, 0.0302959f}, + new float[] {3.81375E-006f, 1.52437E-005f, 6.0794E-005f, 0.000240327f, 0.000918274f, 0.00311526f, 0.00775194f, 0.0123457f, 0.0144928f, 0.0151515f, 0.0153257f, 0.0153698f, 0.0153809f}, + new float[] {1.90688E-006f, 7.62189E-006f, 3.03979E-005f, 0.000120178f, 0.000459348f, 0.00156006f, 0.00389105f, 0.00621118f, 0.00729927f, 0.00763359f, 0.00772201f, 0.00774443f, 0.00775006f}, + new float[] {9.53441E-007f, 3.81096E-006f, 1.51992E-005f, 6.00925E-005f, 0.000229727f, 0.00078064f, 0.00194932f, 0.00311526f, 0.003663f, 0.00383142f, 0.00387597f, 0.00388727f, 0.0038901f}, + new float[] {4.76721E-007f, 1.90548E-006f, 7.59965E-006f, 3.00472E-005f, 0.000114877f, 0.000390472f, 0.00097561f, 0.00156006f, 0.00183486f, 0.00191939f, 0.00194175f, 0.00194742f, 0.00194884f}, + new float[] {2.3836E-007f, 9.52743E-007f, 3.79984E-006f, 1.50238E-005f, 5.74416E-005f, 0.000195274f, 0.000488043f, 0.00078064f, 0.000918274f, 0.000960615f, 0.000971817f, 0.000974659f, 0.000975372f}, + new float[] {1.1918E-007f, 4.76372E-007f, 1.89992E-006f, 7.51196E-006f, 2.87216E-005f, 9.76467E-005f, 0.000244081f, 0.000390472f, 0.000459348f, 0.000480538f, 0.000486145f, 0.000487567f, 0.000487924f}, + new float[] {5.95901E-008f, 2.38186E-007f, 9.49963E-007f, 3.756E-006f, 1.4361E-005f, 4.88257E-005f, 0.000122055f, 0.000195274f, 0.000229727f, 0.000240327f, 0.000243132f, 0.000243843f, 0.000244021f}, + new float[] {2.9795E-008f, 1.19093E-007f, 4.74982E-007f, 1.878E-006f, 7.18056E-006f, 2.44135E-005f, 6.10314E-005f, 9.76467E-005f, 0.000114877f, 0.000120178f, 0.000121581f, 0.000121936f, 0.000122026f}, + new float[] {1.48975E-008f, 5.95465E-008f, 2.37491E-007f, 9.39002E-007f, 3.59029E-006f, 1.22069E-005f, 3.05166E-005f, 4.88257E-005f, 5.74416E-005f, 6.00925E-005f, 6.0794E-005f, 6.09719E-005f, 6.10165E-005f}, + new float[] {7.44876E-009f, 2.97732E-008f, 1.18745E-007f, 4.69501E-007f, 1.79515E-006f, 6.10348E-006f, 1.52586E-005f, 2.44135E-005f, 2.87216E-005f, 3.00472E-005f, 3.03979E-005f, 3.04869E-005f, 3.05092E-005f}, + new float[] {3.72438E-009f, 1.48866E-008f, 5.93727E-008f, 2.34751E-007f, 8.97575E-007f, 3.05175E-006f, 7.62934E-006f, 1.22069E-005f, 1.4361E-005f, 1.50238E-005f, 1.51992E-005f, 1.52437E-005f, 1.52548E-005f}, + new float[] {1.86219E-009f, 7.44331E-009f, 2.96864E-008f, 1.17375E-007f, 4.48788E-007f, 1.52588E-006f, 3.81468E-006f, 6.10348E-006f, 7.18056E-006f, 7.51196E-006f, 7.59965E-006f, 7.62189E-006f, 7.62747E-006f}, + new float[] {9.31095E-010f, 3.72166E-009f, 1.48432E-008f, 5.86876E-008f, 2.24394E-007f, 7.62939E-007f, 1.90734E-006f, 3.05175E-006f, 3.59029E-006f, 3.756E-006f, 3.79984E-006f, 3.81096E-006f, 3.81375E-006f}, + new float[] {4.65548E-010f, 1.86083E-009f, 7.42159E-009f, 2.93438E-008f, 1.12197E-007f, 3.8147E-007f, 9.53673E-007f, 1.52588E-006f, 1.79515E-006f, 1.878E-006f, 1.89992E-006f, 1.90548E-006f, 1.90688E-006f}, + new float[] {2.32774E-010f, 9.30414E-010f, 3.71079E-009f, 1.46719E-008f, 5.60985E-008f, 1.90735E-007f, 4.76837E-007f, 7.62939E-007f, 8.97575E-007f, 9.39002E-007f, 9.49963E-007f, 9.52743E-007f, 9.53441E-007f}, + new float[] {1.16387E-010f, 4.65207E-010f, 1.8554E-009f, 7.33596E-009f, 2.80492E-008f, 9.53674E-008f, 2.38419E-007f, 3.8147E-007f, 4.48788E-007f, 4.69501E-007f, 4.74982E-007f, 4.76372E-007f, 4.76721E-007f}, + new float[] {5.81935E-011f, 2.32603E-010f, 9.27699E-010f, 3.66798E-009f, 1.40246E-008f, 4.76837E-008f, 1.19209E-007f, 1.90735E-007f, 2.24394E-007f, 2.34751E-007f, 2.37491E-007f, 2.38186E-007f, 2.3836E-007f}, + new float[] {2.90967E-011f, 1.16302E-010f, 4.63849E-010f, 1.83399E-009f, 7.01231E-009f, 2.38419E-008f, 5.96046E-008f, 9.53674E-008f, 1.12197E-007f, 1.17375E-007f, 1.18745E-007f, 1.19093E-007f, 1.1918E-007f} + }; + + private static float[][] Q_div2_tab_right = { + new float[] {0.992246f, 0.992241f, 0.992218f, 0.992128f, 0.991768f, 0.990329f, 0.984615f, 0.962406f, 0.882759f, 0.663212f, 0.332468f, 0.111015f, 0.0302959f}, + new float[] {0.984612f, 0.984601f, 0.984556f, 0.984379f, 0.98367f, 0.980843f, 0.969697f, 0.927536f, 0.790123f, 0.496124f, 0.199377f, 0.0587695f, 0.0153809f}, + new float[] {0.96969f, 0.969668f, 0.969582f, 0.969238f, 0.967864f, 0.962406f, 0.941176f, 0.864865f, 0.653061f, 0.329897f, 0.110727f, 0.0302744f, 0.00775006f}, + new float[] {0.941163f, 0.941122f, 0.94096f, 0.940312f, 0.937729f, 0.927536f, 0.888889f, 0.761905f, 0.484848f, 0.197531f, 0.0586081f, 0.0153698f, 0.0038901f}, + new float[] {0.888865f, 0.888792f, 0.888503f, 0.887348f, 0.882759f, 0.864865f, 0.8f, 0.615385f, 0.32f, 0.109589f, 0.0301887f, 0.00774443f, 0.00194884f}, + new float[] {0.799961f, 0.799844f, 0.799375f, 0.797508f, 0.790123f, 0.761905f, 0.666667f, 0.444444f, 0.190476f, 0.057971f, 0.0153257f, 0.00388727f, 0.000975372f}, + new float[] {0.666612f, 0.66645f, 0.6658f, 0.663212f, 0.653061f, 0.615385f, 0.5f, 0.285714f, 0.105263f, 0.0298507f, 0.00772201f, 0.00194742f, 0.000487924f}, + new float[] {0.499939f, 0.499756f, 0.499025f, 0.496124f, 0.484848f, 0.444444f, 0.333333f, 0.166667f, 0.0555556f, 0.0151515f, 0.00387597f, 0.000974659f, 0.000244021f}, + new float[] {0.333279f, 0.333116f, 0.332468f, 0.329897f, 0.32f, 0.285714f, 0.2f, 0.0909091f, 0.0285714f, 0.00763359f, 0.00194175f, 0.000487567f, 0.000122026f}, + new float[] {0.199961f, 0.199844f, 0.199377f, 0.197531f, 0.190476f, 0.166667f, 0.111111f, 0.047619f, 0.0144928f, 0.00383142f, 0.000971817f, 0.000243843f, 6.10165E-005f}, + new float[] {0.111087f, 0.111015f, 0.110727f, 0.109589f, 0.105263f, 0.0909091f, 0.0588235f, 0.0243902f, 0.00729927f, 0.00191939f, 0.000486145f, 0.000121936f, 3.05092E-005f}, + new float[] {0.05881f, 0.0587695f, 0.0586081f, 0.057971f, 0.0555556f, 0.047619f, 0.030303f, 0.0123457f, 0.003663f, 0.000960615f, 0.000243132f, 6.09719E-005f, 1.52548E-005f}, + new float[] {0.0302959f, 0.0302744f, 0.0301887f, 0.0298507f, 0.0285714f, 0.0243902f, 0.0153846f, 0.00621118f, 0.00183486f, 0.000480538f, 0.000121581f, 3.04869E-005f, 7.62747E-006f}, + new float[] {0.0153809f, 0.0153698f, 0.0153257f, 0.0151515f, 0.0144928f, 0.0123457f, 0.00775194f, 0.00311526f, 0.000918274f, 0.000240327f, 6.0794E-005f, 1.52437E-005f, 3.81375E-006f}, + new float[] {0.00775006f, 0.00774443f, 0.00772201f, 0.00763359f, 0.00729927f, 0.00621118f, 0.00389105f, 0.00156006f, 0.000459348f, 0.000120178f, 3.03979E-005f, 7.62189E-006f, 1.90688E-006f}, + new float[] {0.0038901f, 0.00388727f, 0.00387597f, 0.00383142f, 0.003663f, 0.00311526f, 0.00194932f, 0.00078064f, 0.000229727f, 6.00925E-005f, 1.51992E-005f, 3.81096E-006f, 9.53441E-007f}, + new float[] {0.00194884f, 0.00194742f, 0.00194175f, 0.00191939f, 0.00183486f, 0.00156006f, 0.00097561f, 0.000390472f, 0.000114877f, 3.00472E-005f, 7.59965E-006f, 1.90548E-006f, 4.76721E-007f}, + new float[] {0.000975372f, 0.000974659f, 0.000971817f, 0.000960615f, 0.000918274f, 0.00078064f, 0.000488043f, 0.000195274f, 5.74416E-005f, 1.50238E-005f, 3.79984E-006f, 9.52743E-007f, 2.3836E-007f}, + new float[] {0.000487924f, 0.000487567f, 0.000486145f, 0.000480538f, 0.000459348f, 0.000390472f, 0.000244081f, 9.76467E-005f, 2.87216E-005f, 7.51196E-006f, 1.89992E-006f, 4.76372E-007f, 1.1918E-007f}, + new float[] {0.000244021f, 0.000243843f, 0.000243132f, 0.000240327f, 0.000229727f, 0.000195274f, 0.000122055f, 4.88257E-005f, 1.4361E-005f, 3.756E-006f, 9.49963E-007f, 2.38186E-007f, 5.95901E-008f}, + new float[] {0.000122026f, 0.000121936f, 0.000121581f, 0.000120178f, 0.000114877f, 9.76467E-005f, 6.10314E-005f, 2.44135E-005f, 7.18056E-006f, 1.878E-006f, 4.74982E-007f, 1.19093E-007f, 2.9795E-008f}, + new float[] {6.10165E-005f, 6.09719E-005f, 6.0794E-005f, 6.00925E-005f, 5.74416E-005f, 4.88257E-005f, 3.05166E-005f, 1.22069E-005f, 3.59029E-006f, 9.39002E-007f, 2.37491E-007f, 5.95465E-008f, 1.48975E-008f}, + new float[] {3.05092E-005f, 3.04869E-005f, 3.03979E-005f, 3.00472E-005f, 2.87216E-005f, 2.44135E-005f, 1.52586E-005f, 6.10348E-006f, 1.79515E-006f, 4.69501E-007f, 1.18745E-007f, 2.97732E-008f, 7.44876E-009f}, + new float[] {1.52548E-005f, 1.52437E-005f, 1.51992E-005f, 1.50238E-005f, 1.4361E-005f, 1.22069E-005f, 7.62934E-006f, 3.05175E-006f, 8.97575E-007f, 2.34751E-007f, 5.93727E-008f, 1.48866E-008f, 3.72438E-009f}, + new float[] {7.62747E-006f, 7.62189E-006f, 7.59965E-006f, 7.51196E-006f, 7.18056E-006f, 6.10348E-006f, 3.81468E-006f, 1.52588E-006f, 4.48788E-007f, 1.17375E-007f, 2.96864E-008f, 7.44331E-009f, 1.86219E-009f}, + new float[] {3.81375E-006f, 3.81096E-006f, 3.79984E-006f, 3.756E-006f, 3.59029E-006f, 3.05175E-006f, 1.90734E-006f, 7.62939E-007f, 2.24394E-007f, 5.86876E-008f, 1.48432E-008f, 3.72166E-009f, 9.31095E-010f}, + new float[] {1.90688E-006f, 1.90548E-006f, 1.89992E-006f, 1.878E-006f, 1.79515E-006f, 1.52588E-006f, 9.53673E-007f, 3.8147E-007f, 1.12197E-007f, 2.93438E-008f, 7.42159E-009f, 1.86083E-009f, 4.65548E-010f}, + new float[] {9.53441E-007f, 9.52743E-007f, 9.49963E-007f, 9.39002E-007f, 8.97575E-007f, 7.62939E-007f, 4.76837E-007f, 1.90735E-007f, 5.60985E-008f, 1.46719E-008f, 3.71079E-009f, 9.30414E-010f, 2.32774E-010f}, + new float[] {4.76721E-007f, 4.76372E-007f, 4.74982E-007f, 4.69501E-007f, 4.48788E-007f, 3.8147E-007f, 2.38419E-007f, 9.53674E-008f, 2.80492E-008f, 7.33596E-009f, 1.8554E-009f, 4.65207E-010f, 1.16387E-010f}, + new float[] {2.3836E-007f, 2.38186E-007f, 2.37491E-007f, 2.34751E-007f, 2.24394E-007f, 1.90735E-007f, 1.19209E-007f, 4.76837E-008f, 1.40246E-008f, 3.66798E-009f, 9.27699E-010f, 2.32603E-010f, 5.81935E-011f}, + new float[] {1.1918E-007f, 1.19093E-007f, 1.18745E-007f, 1.17375E-007f, 1.12197E-007f, 9.53674E-008f, 5.96046E-008f, 2.38419E-008f, 7.01231E-009f, 1.83399E-009f, 4.63849E-010f, 1.16302E-010f, 2.90967E-011f} + }; + + /* table for Q_div values when no coupling */ + private static float[] Q_div_tab = { + 0.0153846f, 0.030303f, + 0.0588235f, 0.111111f, + 0.2f, 0.333333f, + 0.5f, 0.666667f, + 0.8f, 0.888889f, + 0.941176f, 0.969697f, + 0.984615f, 0.992248f, + 0.996109f, 0.998051f, + 0.999024f, 0.999512f, + 0.999756f, 0.999878f, + 0.999939f, 0.999969f, + 0.999985f, 0.999992f, + 0.999996f, 0.999998f, + 0.999999f, 1f, + 1f, 1f, + 1f + }; + + private static float[][] Q_div_tab_left = { + new float[] {0.969704f, 0.888985f, 0.667532f, 0.336788f, 0.117241f, 0.037594f, 0.0153846f, 0.00967118f, 0.00823245f, 0.00787211f, 0.00778198f, 0.00775945f, 0.00775382f}, + new float[] {0.984619f, 0.94123f, 0.800623f, 0.503876f, 0.209877f, 0.0724638f, 0.030303f, 0.0191571f, 0.0163305f, 0.0156212f, 0.0154438f, 0.0153994f, 0.0153883f}, + new float[] {0.99225f, 0.969726f, 0.889273f, 0.670103f, 0.346939f, 0.135135f, 0.0588235f, 0.037594f, 0.0321361f, 0.0307619f, 0.0304178f, 0.0303317f, 0.0303102f}, + new float[] {0.99611f, 0.98463f, 0.941392f, 0.802469f, 0.515152f, 0.238095f, 0.111111f, 0.0724638f, 0.0622711f, 0.0596878f, 0.0590397f, 0.0588776f, 0.058837f}, + new float[] {0.998051f, 0.992256f, 0.969811f, 0.890411f, 0.68f, 0.384615f, 0.2f, 0.135135f, 0.117241f, 0.112652f, 0.111497f, 0.111208f, 0.111135f}, + new float[] {0.999025f, 0.996113f, 0.984674f, 0.942029f, 0.809524f, 0.555556f, 0.333333f, 0.238095f, 0.209877f, 0.202492f, 0.200625f, 0.200156f, 0.200039f}, + new float[] {0.999512f, 0.998053f, 0.992278f, 0.970149f, 0.894737f, 0.714286f, 0.5f, 0.384615f, 0.346939f, 0.336788f, 0.3342f, 0.33355f, 0.333388f}, + new float[] {0.999756f, 0.999025f, 0.996124f, 0.984848f, 0.944444f, 0.833333f, 0.666667f, 0.555556f, 0.515152f, 0.503876f, 0.500975f, 0.500244f, 0.500061f}, + new float[] {0.999878f, 0.999512f, 0.998058f, 0.992366f, 0.971429f, 0.909091f, 0.8f, 0.714286f, 0.68f, 0.670103f, 0.667532f, 0.666884f, 0.666721f}, + new float[] {0.999939f, 0.999756f, 0.999028f, 0.996169f, 0.985507f, 0.952381f, 0.888889f, 0.833333f, 0.809524f, 0.802469f, 0.800623f, 0.800156f, 0.800039f}, + new float[] {0.999969f, 0.999878f, 0.999514f, 0.998081f, 0.992701f, 0.97561f, 0.941176f, 0.909091f, 0.894737f, 0.890411f, 0.889273f, 0.888985f, 0.888913f}, + new float[] {0.999985f, 0.999939f, 0.999757f, 0.999039f, 0.996337f, 0.987654f, 0.969697f, 0.952381f, 0.944444f, 0.942029f, 0.941392f, 0.94123f, 0.94119f}, + new float[] {0.999992f, 0.99997f, 0.999878f, 0.999519f, 0.998165f, 0.993789f, 0.984615f, 0.97561f, 0.971429f, 0.970149f, 0.969811f, 0.969726f, 0.969704f}, + new float[] {0.999996f, 0.999985f, 0.999939f, 0.99976f, 0.999082f, 0.996885f, 0.992248f, 0.987654f, 0.985507f, 0.984848f, 0.984674f, 0.98463f, 0.984619f}, + new float[] {0.999998f, 0.999992f, 0.99997f, 0.99988f, 0.999541f, 0.99844f, 0.996109f, 0.993789f, 0.992701f, 0.992366f, 0.992278f, 0.992256f, 0.99225f}, + new float[] {0.999999f, 0.999996f, 0.999985f, 0.99994f, 0.99977f, 0.999219f, 0.998051f, 0.996885f, 0.996337f, 0.996169f, 0.996124f, 0.996113f, 0.99611f}, + new float[] {1f, 0.999998f, 0.999992f, 0.99997f, 0.999885f, 0.99961f, 0.999024f, 0.99844f, 0.998165f, 0.998081f, 0.998058f, 0.998053f, 0.998051f}, + new float[] {1f, 0.999999f, 0.999996f, 0.999985f, 0.999943f, 0.999805f, 0.999512f, 0.999219f, 0.999082f, 0.999039f, 0.999028f, 0.999025f, 0.999025f}, + new float[] {1f, 1f, 0.999998f, 0.999992f, 0.999971f, 0.999902f, 0.999756f, 0.99961f, 0.999541f, 0.999519f, 0.999514f, 0.999512f, 0.999512f}, + new float[] {1f, 1f, 0.999999f, 0.999996f, 0.999986f, 0.999951f, 0.999878f, 0.999805f, 0.99977f, 0.99976f, 0.999757f, 0.999756f, 0.999756f}, + new float[] {1f, 1f, 1f, 0.999998f, 0.999993f, 0.999976f, 0.999939f, 0.999902f, 0.999885f, 0.99988f, 0.999878f, 0.999878f, 0.999878f}, + new float[] {1f, 1f, 1f, 0.999999f, 0.999996f, 0.999988f, 0.999969f, 0.999951f, 0.999943f, 0.99994f, 0.999939f, 0.999939f, 0.999939f}, + new float[] {1f, 1f, 1f, 1f, 0.999998f, 0.999994f, 0.999985f, 0.999976f, 0.999971f, 0.99997f, 0.99997f, 0.99997f, 0.999969f}, + new float[] {1f, 1f, 1f, 1f, 0.999999f, 0.999997f, 0.999992f, 0.999988f, 0.999986f, 0.999985f, 0.999985f, 0.999985f, 0.999985f}, + new float[] {1f, 1f, 1f, 1f, 1f, 0.999998f, 0.999996f, 0.999994f, 0.999993f, 0.999992f, 0.999992f, 0.999992f, 0.999992f}, + new float[] {1f, 1f, 1f, 1f, 1f, 0.999999f, 0.999998f, 0.999997f, 0.999996f, 0.999996f, 0.999996f, 0.999996f, 0.999996f}, + new float[] {1f, 1f, 1f, 1f, 1f, 1f, 0.999999f, 0.999998f, 0.999998f, 0.999998f, 0.999998f, 0.999998f, 0.999998f}, + new float[] {1f, 1f, 1f, 1f, 1f, 1f, 1f, 0.999999f, 0.999999f, 0.999999f, 0.999999f, 0.999999f, 0.999999f}, + new float[] {1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f}, + new float[] {1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f}, + new float[] {1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f} + }; + + private static float[][] Q_div_tab_right = { + new float[] {0.00775382f, 0.00775945f, 0.00778198f, 0.00787211f, 0.00823245f, 0.00967118f, 0.0153846f, 0.037594f, 0.117241f, 0.336788f, 0.667532f, 0.888985f, 0.969704f}, + new float[] {0.0153883f, 0.0153994f, 0.0154438f, 0.0156212f, 0.0163305f, 0.0191571f, 0.030303f, 0.0724638f, 0.209877f, 0.503876f, 0.800623f, 0.94123f, 0.984619f}, + new float[] {0.0303102f, 0.0303317f, 0.0304178f, 0.0307619f, 0.0321361f, 0.037594f, 0.0588235f, 0.135135f, 0.346939f, 0.670103f, 0.889273f, 0.969726f, 0.99225f}, + new float[] {0.058837f, 0.0588776f, 0.0590397f, 0.0596878f, 0.0622711f, 0.0724638f, 0.111111f, 0.238095f, 0.515152f, 0.802469f, 0.941392f, 0.98463f, 0.99611f}, + new float[] {0.111135f, 0.111208f, 0.111497f, 0.112652f, 0.117241f, 0.135135f, 0.2f, 0.384615f, 0.68f, 0.890411f, 0.969811f, 0.992256f, 0.998051f}, + new float[] {0.200039f, 0.200156f, 0.200625f, 0.202492f, 0.209877f, 0.238095f, 0.333333f, 0.555556f, 0.809524f, 0.942029f, 0.984674f, 0.996113f, 0.999025f}, + new float[] {0.333388f, 0.33355f, 0.3342f, 0.336788f, 0.346939f, 0.384615f, 0.5f, 0.714286f, 0.894737f, 0.970149f, 0.992278f, 0.998053f, 0.999512f}, + new float[] {0.500061f, 0.500244f, 0.500975f, 0.503876f, 0.515152f, 0.555556f, 0.666667f, 0.833333f, 0.944444f, 0.984848f, 0.996124f, 0.999025f, 0.999756f}, + new float[] {0.666721f, 0.666884f, 0.667532f, 0.670103f, 0.68f, 0.714286f, 0.8f, 0.909091f, 0.971429f, 0.992366f, 0.998058f, 0.999512f, 0.999878f}, + new float[] {0.800039f, 0.800156f, 0.800623f, 0.802469f, 0.809524f, 0.833333f, 0.888889f, 0.952381f, 0.985507f, 0.996169f, 0.999028f, 0.999756f, 0.999939f}, + new float[] {0.888913f, 0.888985f, 0.889273f, 0.890411f, 0.894737f, 0.909091f, 0.941176f, 0.97561f, 0.992701f, 0.998081f, 0.999514f, 0.999878f, 0.999969f}, + new float[] {0.94119f, 0.94123f, 0.941392f, 0.942029f, 0.944444f, 0.952381f, 0.969697f, 0.987654f, 0.996337f, 0.999039f, 0.999757f, 0.999939f, 0.999985f}, + new float[] {0.969704f, 0.969726f, 0.969811f, 0.970149f, 0.971429f, 0.97561f, 0.984615f, 0.993789f, 0.998165f, 0.999519f, 0.999878f, 0.99997f, 0.999992f}, + new float[] {0.984619f, 0.98463f, 0.984674f, 0.984848f, 0.985507f, 0.987654f, 0.992248f, 0.996885f, 0.999082f, 0.99976f, 0.999939f, 0.999985f, 0.999996f}, + new float[] {0.99225f, 0.992256f, 0.992278f, 0.992366f, 0.992701f, 0.993789f, 0.996109f, 0.99844f, 0.999541f, 0.99988f, 0.99997f, 0.999992f, 0.999998f}, + new float[] {0.99611f, 0.996113f, 0.996124f, 0.996169f, 0.996337f, 0.996885f, 0.998051f, 0.999219f, 0.99977f, 0.99994f, 0.999985f, 0.999996f, 0.999999f}, + new float[] {0.998051f, 0.998053f, 0.998058f, 0.998081f, 0.998165f, 0.99844f, 0.999024f, 0.99961f, 0.999885f, 0.99997f, 0.999992f, 0.999998f, 1f}, + new float[] {0.999025f, 0.999025f, 0.999028f, 0.999039f, 0.999082f, 0.999219f, 0.999512f, 0.999805f, 0.999943f, 0.999985f, 0.999996f, 0.999999f, 1f}, + new float[] {0.999512f, 0.999512f, 0.999514f, 0.999519f, 0.999541f, 0.99961f, 0.999756f, 0.999902f, 0.999971f, 0.999992f, 0.999998f, 1f, 1f}, + new float[] {0.999756f, 0.999756f, 0.999757f, 0.99976f, 0.99977f, 0.999805f, 0.999878f, 0.999951f, 0.999986f, 0.999996f, 0.999999f, 1f, 1f}, + new float[] {0.999878f, 0.999878f, 0.999878f, 0.99988f, 0.999885f, 0.999902f, 0.999939f, 0.999976f, 0.999993f, 0.999998f, 1f, 1f, 1f}, + new float[] {0.999939f, 0.999939f, 0.999939f, 0.99994f, 0.999943f, 0.999951f, 0.999969f, 0.999988f, 0.999996f, 0.999999f, 1f, 1f, 1f}, + new float[] {0.999969f, 0.99997f, 0.99997f, 0.99997f, 0.999971f, 0.999976f, 0.999985f, 0.999994f, 0.999998f, 1f, 1f, 1f, 1f}, + new float[] {0.999985f, 0.999985f, 0.999985f, 0.999985f, 0.999986f, 0.999988f, 0.999992f, 0.999997f, 0.999999f, 1f, 1f, 1f, 1f}, + new float[] {0.999992f, 0.999992f, 0.999992f, 0.999992f, 0.999993f, 0.999994f, 0.999996f, 0.999998f, 1f, 1f, 1f, 1f, 1f}, + new float[] {0.999996f, 0.999996f, 0.999996f, 0.999996f, 0.999996f, 0.999997f, 0.999998f, 0.999999f, 1f, 1f, 1f, 1f, 1f}, + new float[] {0.999998f, 0.999998f, 0.999998f, 0.999998f, 0.999998f, 0.999998f, 0.999999f, 1f, 1f, 1f, 1f, 1f, 1f}, + new float[] {0.999999f, 0.999999f, 0.999999f, 0.999999f, 0.999999f, 0.999999f, 1f, 1f, 1f, 1f, 1f, 1f, 1f}, + new float[] {1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f}, + new float[] {1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f}, + new float[] {1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f, 1f} + }; + + public static void ExtractEnvelopeData(SBR sbr, int ch) + { + int l, k; + + for (l = 0; l < sbr._L_E[ch]; l++) + { + if (sbr._bs_df_env[ch, l] == 0) + { + for (k = 1; k < sbr._n[sbr._f[ch, l]]; k++) + { + sbr._E[ch, k, l] = sbr._E[ch, k - 1, l] + sbr._E[ch, k, l]; + if (sbr._E[ch, k, l] < 0) + sbr._E[ch, k, l] = 0; + } + + } + else + { /* bs_df_env == 1 */ + + int g = l == 0 ? sbr._f_prev[ch] : sbr._f[ch, l - 1]; + int E_prev; + + if (sbr._f[ch, l] == g) + { + for (k = 0; k < sbr._n[sbr._f[ch, l]]; k++) + { + if (l == 0) + E_prev = sbr._E_prev[ch, k]; + else + E_prev = sbr._E[ch, k, l - 1]; + + sbr._E[ch, k, l] = E_prev + sbr._E[ch, k, l]; + } + + } + else if (g == 1 && sbr._f[ch, l] == 0) + { + int i; + + for (k = 0; k < sbr._n[sbr._f[ch, l]]; k++) + { + for (i = 0; i < sbr._N_high; i++) + { + if (sbr._f_table_res[Constants.HI_RES, i] == sbr._f_table_res[Constants.LO_RES, k]) + { + if (l == 0) + E_prev = sbr._E_prev[ch, i]; + else + E_prev = sbr._E[ch, i, l - 1]; + + sbr._E[ch, k, l] = E_prev + sbr._E[ch, k, l]; + } + } + } + + } + else if (g == 0 && sbr._f[ch, l] == 1) + { + int i; + + for (k = 0; k < sbr._n[sbr._f[ch, l]]; k++) + { + for (i = 0; i < sbr._N_low; i++) + { + if (sbr._f_table_res[Constants.LO_RES, i] <= sbr._f_table_res[Constants.HI_RES, k] + && sbr._f_table_res[Constants.HI_RES, k] < sbr._f_table_res[Constants.LO_RES, i + 1]) + { + if (l == 0) + E_prev = sbr._E_prev[ch, i]; + else + E_prev = sbr._E[ch, i, l - 1]; + + sbr._E[ch, k, l] = E_prev + sbr._E[ch, k, l]; + } + } + } + } + } + } + } + + public static void ExtractNoiseFloorData(SBR sbr, int ch) + { + int l, k; + + for (l = 0; l < sbr._L_Q[ch]; l++) + { + if (sbr._bs_df_noise[ch, l] == 0) + { + for (k = 1; k < sbr._N_Q; k++) + { + sbr._Q[ch, k, l] = sbr._Q[ch, k, l] + sbr._Q[ch, k - 1, l]; + } + } + else + { + if (l == 0) + { + for (k = 0; k < sbr._N_Q; k++) + { + sbr._Q[ch, k, l] = sbr._Q_prev[ch, k] + sbr._Q[ch, k, 0]; + } + } + else + { + for (k = 0; k < sbr._N_Q; k++) + { + sbr._Q[ch, k, l] = sbr._Q[ch, k, l - 1] + sbr._Q[ch, k, l]; + } + } + } + } + } + + /* calculates 1/(1+Q) */ + /* [0..1] */ + public static float CalcQDiv(SBR sbr, int ch, int m, int l) + { + if (sbr._bs_coupling) + { + /* left channel */ + if (sbr._Q[0, m, l] < 0 || sbr._Q[0, m, l] > 30 + || sbr._Q[1, m, l] < 0 || sbr._Q[1, m, l] > 24 /* 2*panOffset(1) */) + { + return 0; + } + else + { + /* the pan parameter is always even */ + if (ch == 0) + { + return Q_div_tab_left[sbr._Q[0, m, l]][sbr._Q[1, m, l] >> 1]; + } + else + { + return Q_div_tab_right[sbr._Q[0, m, l]][sbr._Q[1, m, l] >> 1]; + } + } + } + else + { + /* no coupling */ + if (sbr._Q[ch, m, l] < 0 || sbr._Q[ch, m, l] > 30) + { + return 0; + } + else + { + return Q_div_tab[sbr._Q[ch, m, l]]; + } + } + } + + /* calculates Q/(1+Q) */ + /* [0..1] */ + public static float CalcQDiv2(SBR sbr, int ch, int m, int l) + { + if (sbr._bs_coupling) + { + if (sbr._Q[0, m, l] < 0 || sbr._Q[0, m, l] > 30 + || sbr._Q[1, m, l] < 0 || sbr._Q[1, m, l] > 24 /* 2*panOffset(1) */) + { + return 0; + } + else + { + /* the pan parameter is always even */ + if (ch == 0) + { + return Q_div2_tab_left[sbr._Q[0, m, l]][sbr._Q[1, m, l] >> 1]; + } + else + { + return Q_div2_tab_right[sbr._Q[0, m, l]][sbr._Q[1, m, l] >> 1]; + } + } + } + else + { + /* no coupling */ + if (sbr._Q[ch, m, l] < 0 || sbr._Q[ch, m, l] > 30) + { + return 0; + } + else + { + return Q_div2_tab[sbr._Q[ch, m, l]]; + } + } + } + + public static void DequantChannel(SBR sbr, int ch) + { + if (!sbr._bs_coupling) + { + int exp; + int l, k; + int amp = sbr._ampRes[ch] ? 0 : 1; + + for (l = 0; l < sbr._L_E[ch]; l++) + { + for (k = 0; k < sbr._n[sbr._f[ch, l]]; k++) + { + /* +6 for the *64 and -10 for the /32 in the synthesis QMF (fixed) + * since this is a energy value: (x/32)^2 = (x^2)/1024 + */ + /* exp = (sbr.E[ch][k][l] >> amp) + 6; */ + exp = sbr._E[ch, k, l] >> amp; + + if (exp < 0 || exp >= 64) + { + sbr._E_orig[ch, k, l] = 0; + } + else + { + sbr._E_orig[ch, k, l] = E_deq_tab[exp]; + + /* save half the table size at the cost of 1 multiply */ + if (amp != 0 && (sbr._E[ch, k, l] & 1) != 0) + { + sbr._E_orig[ch, k, l] = sbr._E_orig[ch, k, l] * 1.414213562f; + } + } + } + } + + for (l = 0; l < sbr._L_Q[ch]; l++) + { + for (k = 0; k < sbr._N_Q; k++) + { + sbr._Q_div[ch, k, l] = CalcQDiv(sbr, ch, k, l); + sbr._Q_div2[ch, k, l] = CalcQDiv2(sbr, ch, k, l); + } + } + } + } + + private static float[] E_pan_tab = { + 0.000244081f, 0.000488043f, + 0.00097561f, 0.00194932f, + 0.00389105f, 0.00775194f, + 0.0153846f, 0.030303f, + 0.0588235f, 0.111111f, + 0.2f, 0.333333f, + 0.5f, 0.666667f, + 0.8f, 0.888889f, + 0.941176f, 0.969697f, + 0.984615f, 0.992248f, + 0.996109f, 0.998051f, + 0.999024f, 0.999512f, + 0.999756f + }; + + public static void Unmap(SBR sbr) + { + float tmp; + int exp0, exp1; + int l, k; + int amp0 = sbr._ampRes[0] ? 0 : 1; + int amp1 = sbr._ampRes[1] ? 0 : 1; + + for (l = 0; l < sbr._L_E[0]; l++) + { + for (k = 0; k < sbr._n[sbr._f[0, l]]; k++) + { + /* +6: * 64 ; +1: * 2 ; */ + exp0 = (sbr._E[0, k, l] >> amp0) + 1; + + /* UN_MAP removed: (x / 4096) same as (x >> 12) */ + /* E[1] is always even so no need for compensating the divide by 2 with + * an extra multiplication + */ + /* exp1 = (sbr.E[1][k][l] >> amp1) - 12; */ + exp1 = sbr._E[1, k, l] >> amp1; + + if (exp0 < 0 || exp0 >= 64 + || exp1 < 0 || exp1 > 24) + { + sbr._E_orig[1, k, l] = 0; + sbr._E_orig[0, k, l] = 0; + } + else + { + tmp = E_deq_tab[exp0]; + if (amp0 != 0 && (sbr._E[0, k, l] & 1) != 0) + { + tmp *= 1.414213562f; + } + + /* panning */ + sbr._E_orig[0, k, l] = tmp * E_pan_tab[exp1]; + sbr._E_orig[1, k, l] = tmp * E_pan_tab[24 - exp1]; + } + } + } + + for (l = 0; l < sbr._L_Q[0]; l++) + { + for (k = 0; k < sbr._N_Q; k++) + { + sbr._Q_div[0, k, l] = CalcQDiv(sbr, 0, k, l); + sbr._Q_div[1, k, l] = CalcQDiv(sbr, 1, k, l); + sbr._Q_div2[0, k, l] = CalcQDiv2(sbr, 0, k, l); + sbr._Q_div2[1, k, l] = CalcQDiv2(sbr, 1, k, l); + } + } + } + } +} diff --git a/SharpJaad.AAC/Sbr/NoiseTable.cs b/SharpJaad.AAC/Sbr/NoiseTable.cs new file mode 100644 index 0000000..3b82fdf --- /dev/null +++ b/SharpJaad.AAC/Sbr/NoiseTable.cs @@ -0,0 +1,521 @@ +namespace SharpJaad.AAC.Sbr +{ + public static class NoiseTable + { + /* Table 1.A.13 Noise table V */ + public static float[,] NOISE_TABLE = { + {-0.99948155879974f, -0.59483414888382f}, + {0.97113454341888f, -0.67528516054153f}, + {0.14130051434040f, -0.95090985298157f}, + {-0.47005495429039f, -0.37340548634529f}, + {0.80705064535141f, 0.29653668403625f}, + {-0.38981479406357f, 0.89572608470917f}, + {-0.01053049881011f, -0.66959059238434f}, + {-0.91266369819641f, -0.11522938311100f}, + {0.54840421676636f, 0.75221365690231f}, + {0.40009254217148f, -0.98929399251938f}, + {-0.99867975711823f, -0.88147068023682f}, + {-0.95531076192856f, 0.90908759832382f}, + {-0.45725932717323f, -0.56716322898865f}, + {-0.72929674386978f, -0.98008275032043f}, + {0.75622802972794f, 0.20950329303741f}, + {0.07069442421198f, -0.78247898817062f}, + {0.74496251344681f, -0.91169005632401f}, + {-0.96440184116364f, -0.94739919900894f}, + {0.30424630641937f, -0.49438267946243f}, + {0.66565030813217f, 0.64652937650681f}, + {0.91697007417679f, 0.17514097690582f}, + {-0.70774918794632f, 0.52548652887344f}, + {-0.70051413774490f, -0.45340028405190f}, + {-0.99496513605118f, -0.90071910619736f}, + {0.98164492845535f, -0.77463155984879f}, + {-0.54671579599380f, -0.02570928446949f}, + {-0.01689629070461f, 0.00287506449968f}, + {-0.86110347509384f, 0.42548584938049f}, + {-0.98892980813980f, -0.87881129980087f}, + {0.51756626367569f, 0.66926783323288f}, + {-0.99635028839111f, -0.58107727766037f}, + {-0.99969369173050f, 0.98369991779327f}, + {0.55266261100769f, 0.59449058771133f}, + {0.34581178426743f, 0.94879418611526f}, + {0.62664210796356f, -0.74402970075607f}, + {-0.77149701118469f, -0.33883658051491f}, + {-0.91592246294022f, 0.03687901422381f}, + {-0.76285493373871f, -0.91371870040894f}, + {0.79788339138031f, -0.93180972337723f}, + {0.54473078250885f, -0.11919206380844f}, + {-0.85639280080795f, 0.42429855465889f}, + {-0.92882400751114f, 0.27871808409691f}, + {-0.11708371341228f, -0.99800843000412f}, + {0.21356749534607f, -0.90716296434402f}, + {-0.76191693544388f, 0.99768120050430f}, + {0.98111045360565f, -0.95854461193085f}, + {-0.85913270711899f, 0.95766568183899f}, + {-0.93307244777679f, 0.49431759119034f}, + {0.30485755205154f, -0.70540034770966f}, + {0.85289651155472f, 0.46766132116318f}, + {0.91328084468842f, -0.99839597940445f}, + {-0.05890199914575f, 0.70741826295853f}, + {0.28398686647415f, 0.34633556008339f}, + {0.95258164405823f, -0.54893416166306f}, + {-0.78566324710846f, -0.75568538904190f}, + {-0.95789498090744f, -0.20423194766045f}, + {0.82411158084869f, 0.96654617786407f}, + {-0.65185445547104f, -0.88734990358353f}, + {-0.93643605709076f, 0.99870789051056f}, + {0.91427159309387f, -0.98290503025055f}, + {-0.70395684242249f, 0.58796799182892f}, + {0.00563771976158f, 0.61768198013306f}, + {0.89065051078796f, 0.52783352136612f}, + {-0.68683707714081f, 0.80806946754456f}, + {0.72165340185165f, -0.69259858131409f}, + {-0.62928247451782f, 0.13627037405968f}, + {0.29938435554504f, -0.46051329374313f}, + {-0.91781955957413f, -0.74012714624405f}, + {0.99298715591431f, 0.40816611051559f}, + {0.82368296384811f, -0.74036049842834f}, + {-0.98512834310532f, -0.99972331523895f}, + {-0.95915371179581f, -0.99237799644470f}, + {-0.21411126852036f, -0.93424820899963f}, + {-0.68821477890015f, -0.26892307400703f}, + {0.91851997375488f, 0.09358228743076f}, + {-0.96062767505646f, 0.36099094152451f}, + {0.51646184921265f, -0.71373331546783f}, + {0.61130720376968f, 0.46950140595436f}, + {0.47336128354073f, -0.27333179116249f}, + {0.90998309850693f, 0.96715664863586f}, + {0.44844800233841f, 0.99211573600769f}, + {0.66614890098572f, 0.96590173244476f}, + {0.74922239780426f, -0.89879858493805f}, + {-0.99571585655212f, 0.52785521745682f}, + {0.97401082515717f, -0.16855870187283f}, + {0.72683745622635f, -0.48060774803162f}, + {0.95432192087173f, 0.68849605321884f}, + {-0.72962206602097f, -0.76608443260193f}, + {-0.85359477996826f, 0.88738125562668f}, + {-0.81412428617477f, -0.97480767965317f}, + {-0.87930774688721f, 0.74748307466507f}, + {-0.71573328971863f, -0.98570609092712f}, + {0.83524298667908f, 0.83702534437180f}, + {-0.48086065053940f, -0.98848503828049f}, + {0.97139126062393f, 0.80093622207642f}, + {0.51992827653885f, 0.80247628688812f}, + {-0.00848591234535f, -0.76670128107071f}, + {-0.70294374227524f, 0.55359911918640f}, + {-0.95894426107407f, -0.43265503644943f}, + {0.97079253196716f, 0.09325857460499f}, + {-0.92404294013977f, 0.85507702827454f}, + {-0.69506472349167f, 0.98633414506912f}, + {0.26559203863144f, 0.73314309120178f}, + {0.28038442134857f, 0.14537914097309f}, + {-0.74138122797012f, 0.99310338497162f}, + {-0.01752796024084f, -0.82616633176804f}, + {-0.55126774311066f, -0.98898541927338f}, + {0.97960901260376f, -0.94021445512772f}, + {-0.99196308851242f, 0.67019015550613f}, + {-0.67684930562973f, 0.12631492316723f}, + {0.09140039235353f, -0.20537731051445f}, + {-0.71658962965012f, -0.97788202762604f}, + {0.81014639139175f, 0.53722649812698f}, + {0.40616992115974f, -0.26469007134438f}, + {-0.67680186033249f, 0.94502049684525f}, + {0.86849772930145f, -0.18333598971367f}, + {-0.99500381946564f, -0.02634122036397f}, + {0.84329187870026f, 0.10406957566738f}, + {-0.09215968847275f, 0.69540011882782f}, + {0.99956172704697f, -0.12358541786671f}, + {-0.79732781648636f, -0.91582524776459f}, + {0.96349972486496f, 0.96640455722809f}, + {-0.79942780733109f, 0.64323902130127f}, + {-0.11566039919853f, 0.28587844967842f}, + {-0.39922955632210f, 0.94129604101181f}, + {0.99089199304581f, -0.92062628269196f}, + {0.28631284832954f, -0.91035044193268f}, + {-0.83302724361420f, -0.67330408096313f}, + {0.95404446125031f, 0.49162766337395f}, + {-0.06449863314629f, 0.03250560909510f}, + {-0.99575054645538f, 0.42389783263206f}, + {-0.65501141548157f, 0.82546114921570f}, + {-0.81254440546036f, -0.51627236604691f}, + {-0.99646371603012f, 0.84490531682968f}, + {0.00287840608507f, 0.64768260717392f}, + {0.70176988840103f, -0.20453028380871f}, + {0.96361881494522f, 0.40706968307495f}, + {-0.68883758783340f, 0.91338956356049f}, + {-0.34875586628914f, 0.71472293138504f}, + {0.91980081796646f, 0.66507452726364f}, + {-0.99009048938751f, 0.85868018865585f}, + {0.68865793943405f, 0.55660319328308f}, + {-0.99484401941299f, -0.20052559673786f}, + {0.94214510917664f, -0.99696427583694f}, + {-0.67414629459381f, 0.49548220634460f}, + {-0.47339352965355f, -0.85904330015182f}, + {0.14323651790619f, -0.94145596027374f}, + {-0.29268294572830f, 0.05759225040674f}, + {0.43793860077858f, -0.78904968500137f}, + {-0.36345127224922f, 0.64874434471130f}, + {-0.08750604838133f, 0.97686946392059f}, + {-0.96495270729065f, -0.53960305452347f}, + {0.55526942014694f, 0.78891521692276f}, + {0.73538213968277f, 0.96452075242996f}, + {-0.30889773368835f, -0.80664390325546f}, + {0.03574995696545f, -0.97325617074966f}, + {0.98720687627792f, 0.48409134149551f}, + {-0.81689298152924f, -0.90827703475952f}, + {0.67866861820221f, 0.81284505128860f}, + {-0.15808570384979f, 0.85279554128647f}, + {0.80723392963409f, -0.24717418849468f}, + {0.47788757085800f, -0.46333149075508f}, + {0.96367555856705f, 0.38486748933792f}, + {-0.99143874645233f, -0.24945276975632f}, + {0.83081877231598f, -0.94780850410461f}, + {-0.58753192424774f, 0.01290772389621f}, + {0.95538109540939f, -0.85557049512863f}, + {-0.96490919589996f, -0.64020973443985f}, + {-0.97327101230621f, 0.12378127872944f}, + {0.91400367021561f, 0.57972472906113f}, + {-0.99925839900970f, 0.71084845066071f}, + {-0.86875903606415f, -0.20291699469090f}, + {-0.26240035891533f, -0.68264555931091f}, + {-0.24664412438869f, -0.87642270326614f}, + {0.02416275814176f, 0.27192914485931f}, + 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{0.99979043006897f, -0.14130286872387f}, + {-0.92366021871567f, -0.97979295253754f}, + {-0.44607177376747f, -0.54233253002167f}, + {0.44226801395416f, 0.71326756477356f}, + {0.03671907261014f, 0.63606387376785f}, + {0.52175426483154f, -0.85396826267242f}, + {-0.94701141119003f, -0.01826348155737f}, + {-0.98759609460831f, 0.82288712263107f}, + {0.87434792518616f, 0.89399492740631f}, + {-0.93412041664124f, 0.41374051570892f}, + {0.96063941717148f, 0.93116706609726f}, + {0.97534251213074f, 0.86150932312012f}, + {0.99642467498779f, 0.70190042257309f}, + {-0.94705086946487f, -0.29580041766167f}, + {0.91599804162979f, -0.98147833347321f} + }; + } +} diff --git a/SharpJaad.AAC/Sbr/SBR.cs b/SharpJaad.AAC/Sbr/SBR.cs new file mode 100644 index 0000000..009dd34 --- /dev/null +++ b/SharpJaad.AAC/Sbr/SBR.cs @@ -0,0 +1,1477 @@ +using SharpJaad.AAC.Ps; +using SharpJaad.AAC.Syntax; +using System; + +namespace SharpJaad.AAC.Sbr +{ + public class SBR + { + private bool _downSampledSBR; + public SampleFrequency _sampleRate; + public int _maxAACLine; + public int _rate; + public bool _justSeeked; + public int _ret; + + public bool[] _ampRes = new bool[2]; + + public int _k0; + public int _kx; + public int _M; + public int _N_master; + public int _N_high; + public int _N_low; + public int _N_Q; + public int[] _N_L = new int[4]; + public int[] _n = new int[2]; + + public int[] _f_master = new int[64]; + public int[,] _f_table_res = new int[2, 64]; + public int[] _f_table_noise = new int[64]; + public int[,] _f_table_lim = new int[4, 64]; + + public int[] _table_map_k_to_g = new int[64]; + + public int[] _abs_bord_lead = new int[2]; + public int[] _abs_bord_trail = new int[2]; + public int[] _n_rel_lead = new int[2]; + public int[] _n_rel_trail = new int[2]; + + public int[] _L_E = new int[2]; + public int[] _L_E_prev = new int[2]; + public int[] _L_Q = new int[2]; + + public int[,] _t_E = new int[2, Constants.MAX_L_E + 1]; + public int[,] _t_Q = new int[2, 3]; + public int[,] _f = new int[2, Constants.MAX_L_E + 1]; + public int[] _f_prev = new int[2]; + + public float[,,] _G_temp_prev = new float[2, 5, 64]; + public float[,,] _Q_temp_prev = new float[2, 5, 64]; + public int[] _GQ_ringbuf_index = new int[2]; + + public int[,,] _E = new int[2, 64, Constants.MAX_L_E]; + public int[,] _E_prev = new int[2, 64]; + public float[,,] _E_orig = new float[2, 64, Constants.MAX_L_E]; + public float[,,] _E_curr = new float[2, 64, Constants.MAX_L_E]; + public int[,,] _Q = new int[2, 64, 2]; + public float[,,] _Q_div = new float[2, 64, 2]; + public float[,,] _Q_div2 = new float[2, 64, 2]; + public int[,] _Q_prev = new int[2, 64]; + + public int[] _l_A = new int[2]; + public int[] _l_A_prev = new int[2]; + + public int[,] _bs_invf_mode = new int[2, Constants.MAX_L_E]; + public int[,] _bs_invf_mode_prev = new int[2, Constants.MAX_L_E]; + public float[,] _bwArray = new float[2, 64]; + public float[,] _bwArray_prev = new float[2, 64]; + + public int _noPatches; + public int[] _patchNoSubbands = new int[64]; + public int[] _patchStartSubband = new int[64]; + + public int[,] _bs_add_harmonic = new int[2, 64]; + public int[,] _bs_add_harmonic_prev = new int[2, 64]; + + public int[] _index_noise_prev = new int[2]; + public int[] _psi_is_prev = new int[2]; + + public int _bs_start_freq_prev; + public int _bs_stop_freq_prev; + public int _bs_xover_band_prev; + public int _bs_freq_scale_prev; + public bool _bs_alter_scale_prev; + public int _bs_noise_bands_prev; + + public int[] _prevEnvIsShort = new int[2]; + + public int _kx_prev; + public int _bsco; + public int _bsco_prev; + public int _M_prev; + + public bool _Reset; + public int _frame; + public int _header_count; + + public bool _stereo; + public AnalysisFilterbank[] _qmfa = new AnalysisFilterbank[2]; + public SynthesisFilterbank[] _qmfs = new SynthesisFilterbank[2]; + + public float[,,,] _Xsbr = new float[2, Constants.MAX_NTSRHFG, 64, 2]; + + public int _numTimeSlotsRate; + public int _numTimeSlots; + public int _tHFGen; + public int _tHFAdj; + + public PS _ps; + public bool _ps_used; + public bool _psResetFlag; + + /* to get it compiling */ + /* we'll see during the coding of all the tools, whether + these are all used or not. + */ + public bool _bs_header_flag; + public int _bs_crc_flag; + public int _bs_sbr_crc_bits; + public int _bs_protocol_version; + public bool _bs_amp_res; + public int _bs_start_freq; + public int _bs_stop_freq; + public int _bs_xover_band; + public int _bs_freq_scale; + public bool _bs_alter_scale; + public int _bs_noise_bands; + public int _bs_limiter_bands; + public int _bs_limiter_gains; + public bool _bs_interpol_freq; + public bool _bs_smoothing_mode; + public int _bs_samplerate_mode; + public bool[] _bs_add_harmonic_flag = new bool[2]; + public bool[] _bs_add_harmonic_flag_prev = new bool[2]; + public bool _bs_extended_data; + public int _bs_extension_id; + public int _bs_extension_data; + public bool _bs_coupling; + public int[] _bs_frame_class = new int[2]; + public int[,] _bs_rel_bord = new int[2, 9]; + public int[,] _bs_rel_bord_0 = new int[2, 9]; + public int[,] _bs_rel_bord_1 = new int[2, 9]; + public int[] _bs_pointer = new int[2]; + public int[] _bs_abs_bord_0 = new int[2]; + public int[] _bs_abs_bord_1 = new int[2]; + public int[] _bs_num_rel_0 = new int[2]; + public int[] _bs_num_rel_1 = new int[2]; + public int[,] _bs_df_env = new int[2, 9]; + public int[,] _bs_df_noise = new int[2, 3]; + + public SBR(bool smallFrames, bool stereo, SampleFrequency sample_rate, bool downSampledSBR) + { + _downSampledSBR = downSampledSBR; + _stereo = stereo; + _sampleRate = sample_rate; + + _bs_freq_scale = 2; + _bs_alter_scale = true; + _bs_noise_bands = 2; + _bs_limiter_bands = 2; + _bs_limiter_gains = 2; + _bs_interpol_freq = true; + _bs_smoothing_mode = true; + _bs_start_freq = 5; + _bs_amp_res = true; + _bs_samplerate_mode = 1; + _prevEnvIsShort[0] = -1; + _prevEnvIsShort[1] = -1; + _header_count = 0; + _Reset = true; + + _tHFGen = Constants.T_HFGEN; + _tHFAdj = Constants.T_HFADJ; + + _bsco = 0; + _bsco_prev = 0; + _M_prev = 0; + + /* force sbr reset */ + _bs_start_freq_prev = -1; + + if (smallFrames) + { + _numTimeSlotsRate = Constants.RATE * Constants.NO_TIME_SLOTS_960; + _numTimeSlots = Constants.NO_TIME_SLOTS_960; + } + else + { + _numTimeSlotsRate = Constants.RATE * Constants.NO_TIME_SLOTS; + _numTimeSlots = Constants.NO_TIME_SLOTS; + } + + _GQ_ringbuf_index[0] = 0; + _GQ_ringbuf_index[1] = 0; + + if (stereo) + { + /* stereo */ + _qmfa[0] = new AnalysisFilterbank(32); + _qmfa[1] = new AnalysisFilterbank(32); + _qmfs[0] = new SynthesisFilterbank(downSampledSBR ? 32 : 64); + _qmfs[1] = new SynthesisFilterbank(downSampledSBR ? 32 : 64); + } + else + { + /* mono */ + _qmfa[0] = new AnalysisFilterbank(32); + _qmfs[0] = new SynthesisFilterbank(downSampledSBR ? 32 : 64); + _qmfs[1] = null; + } + } + + private void SbrReset() + { + int j = 5; + if (_qmfa[0] != null) _qmfa[0].Reset(); + if (_qmfa[1] != null) _qmfa[1].Reset(); + if (_qmfs[0] != null) _qmfs[0].Reset(); + if (_qmfs[1] != null) _qmfs[1].Reset(); + + Array.Clear(_G_temp_prev, 0, _G_temp_prev.Length); + Array.Clear(_Q_temp_prev, 0, _Q_temp_prev.Length); + + for (int i = 0; i < 40; i++) + { + for (int k = 0; k < 64; k++) + { + _Xsbr[0, i, j, 0] = 0; + _Xsbr[0, i, j, 1] = 0; + _Xsbr[1, i, j, 0] = 0; + _Xsbr[1, i, j, 1] = 0; + } + } + + _GQ_ringbuf_index[0] = 0; + _GQ_ringbuf_index[1] = 0; + _header_count = 0; + _Reset = true; + + _L_E_prev[0] = 0; + _L_E_prev[1] = 0; + _bs_freq_scale = 2; + _bs_alter_scale = true; + _bs_noise_bands = 2; + _bs_limiter_bands = 2; + _bs_limiter_gains = 2; + _bs_interpol_freq = true; + _bs_smoothing_mode = true; + _bs_start_freq = 5; + _bs_amp_res = true; + _bs_samplerate_mode = 1; + _prevEnvIsShort[0] = -1; + _prevEnvIsShort[1] = -1; + _bsco = 0; + _bsco_prev = 0; + _M_prev = 0; + _bs_start_freq_prev = -1; + + _f_prev[0] = 0; + _f_prev[1] = 0; + for (j = 0; j < Constants.MAX_M; j++) + { + _E_prev[0, j] = 0; + _Q_prev[0, j] = 0; + _E_prev[1, j] = 0; + _Q_prev[1, j] = 0; + _bs_add_harmonic_prev[0, j] = 0; + _bs_add_harmonic_prev[1, j] = 0; + } + _bs_add_harmonic_flag_prev[0] = false; + _bs_add_harmonic_flag_prev[1] = false; + } + + private void SbrResetInternal() + { + + /* if these are different from the previous frame: Reset = 1 */ + if (_bs_start_freq != _bs_start_freq_prev + || _bs_stop_freq != _bs_stop_freq_prev + || _bs_freq_scale != _bs_freq_scale_prev + || _bs_alter_scale != _bs_alter_scale_prev + || _bs_xover_band != _bs_xover_band_prev + || _bs_noise_bands != _bs_noise_bands_prev) + { + _Reset = true; + } + else + { + _Reset = false; + } + + _bs_start_freq_prev = _bs_start_freq; + _bs_stop_freq_prev = _bs_stop_freq; + _bs_freq_scale_prev = _bs_freq_scale; + _bs_alter_scale_prev = _bs_alter_scale; + _bs_xover_band_prev = _bs_xover_band; + _bs_noise_bands_prev = _bs_noise_bands; + } + + private int CalcSbrTables(int start_freq, int stop_freq, + int samplerate_mode, int freq_scale, + bool alter_scale, int xover_band) + { + int result = 0; + int k2; + + /* calculate the Master Frequency Table */ + _k0 = FBT.QmfStartChannel(start_freq, samplerate_mode, _sampleRate); + k2 = FBT.QmfStopChannel(stop_freq, _sampleRate, _k0); + + /* check k0 and k2 */ + if (_sampleRate.GetFrequency() >= 48000) + { + if (k2 - _k0 > 32) + result += 1; + } + else if (_sampleRate.GetFrequency() <= 32000) + { + if (k2 - _k0 > 48) + result += 1; + } + else + { /* (sbr.sample_rate == 44100) */ + + if (k2 - _k0 > 45) + result += 1; + } + + if (freq_scale == 0) + { + result += FBT.MasterFrequencyTableFs0(this, _k0, k2, alter_scale); + } + else + { + result += FBT.MasterFrequencyTable(this, _k0, k2, freq_scale, alter_scale); + } + result += FBT.DerivedFrequencyTable(this, xover_band, k2); + + result = result > 0 ? 1 : 0; + + return result; + } + + /* table 2 */ + public int Decode(BitStream ld, int bits, bool crc) + { + int result = 0; + int num_align_bits = 0; + long num_sbr_bits1 = ld.GetPosition(); + int num_sbr_bits2; + + int saved_start_freq, saved_samplerate_mode; + int saved_stop_freq, saved_freq_scale; + int saved_xover_band; + bool saved_alter_scale; + + if (crc) + { + _bs_sbr_crc_bits = ld.ReadBits(10); + } + + /* save old header values, in case the new ones are corrupted */ + saved_start_freq = _bs_start_freq; + saved_samplerate_mode = _bs_samplerate_mode; + saved_stop_freq = _bs_stop_freq; + saved_freq_scale = _bs_freq_scale; + saved_alter_scale = _bs_alter_scale; + saved_xover_band = _bs_xover_band; + + _bs_header_flag = ld.ReadBool(); + + if (_bs_header_flag) + SbrHeader(ld); + + /* Reset? */ + SbrResetInternal(); + + /* first frame should have a header */ + //if (!(sbr.frame == 0 && sbr.bs_header_flag == 0)) + if (_header_count != 0) + { + if (_Reset || _bs_header_flag && _justSeeked) + { + int rt = CalcSbrTables(_bs_start_freq, _bs_stop_freq, + _bs_samplerate_mode, _bs_freq_scale, + _bs_alter_scale, _bs_xover_band); + + /* if an error occured with the new header values revert to the old ones */ + if (rt > 0) + { + CalcSbrTables(saved_start_freq, saved_stop_freq, + saved_samplerate_mode, saved_freq_scale, + saved_alter_scale, saved_xover_band); + } + } + + if (result == 0) + { + result = SbrData(ld); + + /* sbr_data() returning an error means that there was an error in + envelope_time_border_vector(). + In this case the old time border vector is saved and all the previous + data normally read after sbr_grid() is saved. + */ + /* to be on the safe side, calculate old sbr tables in case of error */ + if (result > 0 + && (_Reset || _bs_header_flag && _justSeeked)) + { + CalcSbrTables(saved_start_freq, saved_stop_freq, + saved_samplerate_mode, saved_freq_scale, + saved_alter_scale, saved_xover_band); + } + + /* we should be able to safely set result to 0 now, */ + /* but practise indicates this doesn't work well */ + } + } + else + { + result = 1; + } + + num_sbr_bits2 = (int)(ld.GetPosition() - num_sbr_bits1); + + /* check if we read more bits then were available for sbr */ + if (bits < num_sbr_bits2) + { + throw new AACException("frame overread"); + //faad_resetbits(ld, num_sbr_bits1+8*cnt); + //num_sbr_bits2 = 8*cnt; + + /* turn off PS for the unfortunate case that we randomly read some + * PS data that looks correct */ + //this.ps_used = 0; + + /* Make sure it doesn't decode SBR in this frame, or we'll get glitches */ + //return 1; + } + + + { + /* -4 does not apply, bs_extension_type is re-read in this function */ + num_align_bits = bits /*- 4*/- num_sbr_bits2; + ld.SkipBits(num_align_bits); + } + + return result; + } + + /* table 3 */ + private void SbrHeader(BitStream ld) + { + bool bs_header_extra_1, bs_header_extra_2; + + _header_count++; + + _bs_amp_res = ld.ReadBool(); + + /* bs_start_freq and bs_stop_freq must define a fequency band that does + not exceed 48 channels */ + _bs_start_freq = ld.ReadBits(4); + _bs_stop_freq = ld.ReadBits(4); + _bs_xover_band = ld.ReadBits(3); + ld.ReadBits(2); //reserved + bs_header_extra_1 = ld.ReadBool(); + bs_header_extra_2 = ld.ReadBool(); + + if (bs_header_extra_1) + { + _bs_freq_scale = ld.ReadBits(2); + _bs_alter_scale = ld.ReadBool(); + _bs_noise_bands = ld.ReadBits(2); + } + else + { + /* Default values */ + _bs_freq_scale = 2; + _bs_alter_scale = true; + _bs_noise_bands = 2; + } + + if (bs_header_extra_2) + { + _bs_limiter_bands = ld.ReadBits(2); + _bs_limiter_gains = ld.ReadBits(2); + _bs_interpol_freq = ld.ReadBool(); + _bs_smoothing_mode = ld.ReadBool(); + } + else + { + /* Default values */ + _bs_limiter_bands = 2; + _bs_limiter_gains = 2; + _bs_interpol_freq = true; + _bs_smoothing_mode = true; + } + + } + + /* table 4 */ + private int SbrData(BitStream ld) + { + int result; + + _rate = _bs_samplerate_mode != 0 ? 2 : 1; + + if (_stereo) + { + if ((result = SbrChannelPairElement(ld)) > 0) + return result; + } + else + { + if ((result = SbrSingleChannelElement(ld)) > 0) + return result; + } + + return 0; + } + + /* table 5 */ + private int SbrSingleChannelElement(BitStream ld) + { + int result; + + if (ld.ReadBool()) + { + ld.ReadBits(4); //reserved + } + + if ((result = SbrGrid(ld, 0)) > 0) + return result; + + SbrDtdf(ld, 0); + InvfMode(ld, 0); + SbrEnvelope(ld, 0); + SbrNoise(ld, 0); + + NoiseEnvelope.DequantChannel(this, 0); + + Array.Clear(_bs_add_harmonic, 0, _bs_add_harmonic.Length); + + _bs_add_harmonic_flag[0] = ld.ReadBool(); + if (_bs_add_harmonic_flag[0]) + SinusoidalCoding(ld, 0); + + _bs_extended_data = ld.ReadBool(); + + if (_bs_extended_data) + { + int nr_bits_left; + int ps_ext_read = 0; + int cnt = ld.ReadBits(4); + if (cnt == 15) + { + cnt += ld.ReadBits(8); + } + + nr_bits_left = 8 * cnt; + while (nr_bits_left > 7) + { + int tmp_nr_bits = 0; + + _bs_extension_id = ld.ReadBits(2); + tmp_nr_bits += 2; + + /* allow only 1 PS extension element per extension data */ + if (_bs_extension_id == Constants.EXTENSION_ID_PS) + { + if (ps_ext_read == 0) + { + ps_ext_read = 1; + } + else + { + /* to be safe make it 3, will switch to "default" + * in sbr_extension() */ + _bs_extension_id = 3; + } + } + + tmp_nr_bits += SbrExtension(ld, _bs_extension_id, nr_bits_left); + + /* check if the data read is bigger than the number of available bits */ + if (tmp_nr_bits > nr_bits_left) + return 1; + + nr_bits_left -= tmp_nr_bits; + } + + /* Corrigendum */ + if (nr_bits_left > 0) + { + ld.ReadBits(nr_bits_left); + } + } + + return 0; + } + + /* table 6 */ + private int SbrChannelPairElement(BitStream ld) + { + int n, result; + + if (ld.ReadBool()) + { + //reserved + ld.ReadBits(4); + ld.ReadBits(4); + } + + _bs_coupling = ld.ReadBool(); + + if (_bs_coupling) + { + if ((result = SbrGrid(ld, 0)) > 0) + return result; + + /* need to copy some data from left to right */ + _bs_frame_class[1] = _bs_frame_class[0]; + _L_E[1] = _L_E[0]; + _L_Q[1] = _L_Q[0]; + _bs_pointer[1] = _bs_pointer[0]; + + for (n = 0; n <= _L_E[0]; n++) + { + _t_E[1, n] = _t_E[0, n]; + _f[1, n] = _f[0, n]; + } + for (n = 0; n <= _L_Q[0]; n++) + { + _t_Q[1, n] = _t_Q[0, n]; + } + + SbrDtdf(ld, 0); + SbrDtdf(ld, 1); + InvfMode(ld, 0); + + /* more copying */ + for (n = 0; n < _N_Q; n++) + { + _bs_invf_mode[1, n] = _bs_invf_mode[0, n]; + } + + SbrEnvelope(ld, 0); + SbrNoise(ld, 0); + SbrEnvelope(ld, 1); + SbrNoise(ld, 1); + + Array.Clear(_bs_add_harmonic, 0, _bs_add_harmonic.Length); + + _bs_add_harmonic_flag[0] = ld.ReadBool(); + if (_bs_add_harmonic_flag[0]) + SinusoidalCoding(ld, 0); + + _bs_add_harmonic_flag[1] = ld.ReadBool(); + if (_bs_add_harmonic_flag[1]) + SinusoidalCoding(ld, 1); + } + else + { + int[] saved_t_E = new int[6], saved_t_Q = new int[3]; + int saved_L_E = _L_E[0]; + int saved_L_Q = _L_Q[0]; + int saved_frame_class = _bs_frame_class[0]; + + for (n = 0; n < saved_L_E; n++) + { + saved_t_E[n] = _t_E[0, n]; + } + for (n = 0; n < saved_L_Q; n++) + { + saved_t_Q[n] = _t_Q[0, n]; + } + + if ((result = SbrGrid(ld, 0)) > 0) + return result; + if ((result = SbrGrid(ld, 1)) > 0) + { + /* restore first channel data as well */ + _bs_frame_class[0] = saved_frame_class; + _L_E[0] = saved_L_E; + _L_Q[0] = saved_L_Q; + for (n = 0; n < 6; n++) + { + _t_E[0, n] = saved_t_E[n]; + } + for (n = 0; n < 3; n++) + { + _t_Q[0, n] = saved_t_Q[n]; + } + + return result; + } + SbrDtdf(ld, 0); + SbrDtdf(ld, 1); + InvfMode(ld, 0); + InvfMode(ld, 1); + SbrEnvelope(ld, 0); + SbrEnvelope(ld, 1); + SbrNoise(ld, 0); + SbrNoise(ld, 1); + + Array.Clear(_bs_add_harmonic, 0, _bs_add_harmonic.Length); + + _bs_add_harmonic_flag[0] = ld.ReadBool(); + if (_bs_add_harmonic_flag[0]) + SinusoidalCoding(ld, 0); + + _bs_add_harmonic_flag[1] = ld.ReadBool(); + if (_bs_add_harmonic_flag[1]) + SinusoidalCoding(ld, 1); + } + NoiseEnvelope.DequantChannel(this, 0); + NoiseEnvelope.DequantChannel(this, 1); + + if (_bs_coupling) + NoiseEnvelope.Unmap(this); + + _bs_extended_data = ld.ReadBool(); + if (_bs_extended_data) + { + int nr_bits_left; + int cnt = ld.ReadBits(4); + if (cnt == 15) + { + cnt += ld.ReadBits(8); + } + + nr_bits_left = 8 * cnt; + while (nr_bits_left > 7) + { + int tmp_nr_bits = 0; + + _bs_extension_id = ld.ReadBits(2); + tmp_nr_bits += 2; + tmp_nr_bits += SbrExtension(ld, _bs_extension_id, nr_bits_left); + + /* check if the data read is bigger than the number of available bits */ + if (tmp_nr_bits > nr_bits_left) + return 1; + + nr_bits_left -= tmp_nr_bits; + } + + /* Corrigendum */ + if (nr_bits_left > 0) + { + ld.ReadBits(nr_bits_left); + } + } + + return 0; + } + + /* integer log[2](x): input range [0,10) */ + private int SbrLog2(int val) + { + int[] log2tab = new int[] { 0, 0, 1, 2, 2, 3, 3, 3, 3, 4 }; + if (val < 10 && val >= 0) + return log2tab[val]; + else + return 0; + } + + + /* table 7 */ + private int SbrGrid(BitStream ld, int ch) + { + int i, env, rel, result; + int bs_abs_bord, bs_abs_bord_1; + int bs_num_env = 0; + int saved_L_E = _L_E[ch]; + int saved_L_Q = _L_Q[ch]; + int saved_frame_class = _bs_frame_class[ch]; + + _bs_frame_class[ch] = ld.ReadBits(2); + + switch (_bs_frame_class[ch]) + { + case Constants.FIXFIX: + i = ld.ReadBits(2); + + bs_num_env = Math.Min(1 << i, 5); + + i = ld.ReadBit(); + for (env = 0; env < bs_num_env; env++) + { + _f[ch, env] = i; + } + + _abs_bord_lead[ch] = 0; + _abs_bord_trail[ch] = _numTimeSlots; + _n_rel_lead[ch] = bs_num_env - 1; + _n_rel_trail[ch] = 0; + break; + + case Constants.FIXVAR: + bs_abs_bord = ld.ReadBits(2) + _numTimeSlots; + bs_num_env = ld.ReadBits(2) + 1; + + for (rel = 0; rel < bs_num_env - 1; rel++) + { + _bs_rel_bord[ch, rel] = 2 * ld.ReadBits(2) + 2; + } + i = SbrLog2(bs_num_env + 1); + _bs_pointer[ch] = ld.ReadBits(i); + + for (env = 0; env < bs_num_env; env++) + { + _f[ch, bs_num_env - env - 1] = ld.ReadBit(); + } + + _abs_bord_lead[ch] = 0; + _abs_bord_trail[ch] = bs_abs_bord; + _n_rel_lead[ch] = 0; + _n_rel_trail[ch] = bs_num_env - 1; + break; + + case Constants.VARFIX: + bs_abs_bord = ld.ReadBits(2); + bs_num_env = ld.ReadBits(2) + 1; + + for (rel = 0; rel < bs_num_env - 1; rel++) + { + _bs_rel_bord[ch, rel] = 2 * ld.ReadBits(2) + 2; + } + i = SbrLog2(bs_num_env + 1); + _bs_pointer[ch] = ld.ReadBits(i); + + for (env = 0; env < bs_num_env; env++) + { + _f[ch, env] = ld.ReadBit(); + } + + _abs_bord_lead[ch] = bs_abs_bord; + _abs_bord_trail[ch] = _numTimeSlots; + _n_rel_lead[ch] = bs_num_env - 1; + _n_rel_trail[ch] = 0; + break; + + case Constants.VARVAR: + bs_abs_bord = ld.ReadBits(2); + bs_abs_bord_1 = ld.ReadBits(2) + _numTimeSlots; + _bs_num_rel_0[ch] = ld.ReadBits(2); + _bs_num_rel_1[ch] = ld.ReadBits(2); + + bs_num_env = Math.Min(5, _bs_num_rel_0[ch] + _bs_num_rel_1[ch] + 1); + + for (rel = 0; rel < _bs_num_rel_0[ch]; rel++) + { + _bs_rel_bord_0[ch, rel] = 2 * ld.ReadBits(2) + 2; + } + for (rel = 0; rel < _bs_num_rel_1[ch]; rel++) + { + _bs_rel_bord_1[ch, rel] = 2 * ld.ReadBits(2) + 2; + } + i = SbrLog2(_bs_num_rel_0[ch] + _bs_num_rel_1[ch] + 2); + _bs_pointer[ch] = ld.ReadBits(i); + + for (env = 0; env < bs_num_env; env++) + { + _f[ch, env] = ld.ReadBit(); + } + + _abs_bord_lead[ch] = bs_abs_bord; + _abs_bord_trail[ch] = bs_abs_bord_1; + _n_rel_lead[ch] = _bs_num_rel_0[ch]; + _n_rel_trail[ch] = _bs_num_rel_1[ch]; + break; + } + + if (_bs_frame_class[ch] == Constants.VARVAR) + _L_E[ch] = Math.Min(bs_num_env, 5); + else + _L_E[ch] = Math.Min(bs_num_env, 4); + + if (_L_E[ch] <= 0) + return 1; + + if (_L_E[ch] > 1) + _L_Q[ch] = 2; + else + _L_Q[ch] = 1; + + /* TODO: this code can probably be integrated into the code above! */ + if ((result = TFGrid.EnvelopeTimeBorderVector(this, ch)) > 0) + { + _bs_frame_class[ch] = saved_frame_class; + _L_E[ch] = saved_L_E; + _L_Q[ch] = saved_L_Q; + return result; + } + TFGrid.NoiseFloorTimeBorderVector(this, ch); + + return 0; + } + + /* table 8 */ + private void SbrDtdf(BitStream ld, int ch) + { + int i; + + for (i = 0; i < _L_E[ch]; i++) + { + _bs_df_env[ch, i] = ld.ReadBit(); + } + + for (i = 0; i < _L_Q[ch]; i++) + { + _bs_df_noise[ch, i] = ld.ReadBit(); + } + } + + /* table 9 */ + private void InvfMode(BitStream ld, int ch) + { + int n; + + for (n = 0; n < _N_Q; n++) + { + _bs_invf_mode[ch, n] = ld.ReadBits(2); + } + } + + private int SbrExtension(BitStream ld, int bs_extension_id, int num_bits_left) + { + int ret; + + switch (bs_extension_id) + { + case Constants.EXTENSION_ID_PS: + if (_ps == null) + { + _ps = new PS(_sampleRate, _numTimeSlotsRate); + } + if (_psResetFlag) + { + _ps._headerRead = false; + } + ret = _ps.Decode(ld); + + /* enable PS if and only if: a header has been decoded */ + if (!_ps_used && _ps._headerRead) + { + _ps_used = true; + } + + if (_ps._headerRead) + { + _psResetFlag = false; + } + + return ret; + default: + _bs_extension_data = ld.ReadBits(6); + return 6; + } + } + + /* table 12 */ + private void SinusoidalCoding(BitStream ld, int ch) + { + int n; + + for (n = 0; n < _N_high; n++) + { + _bs_add_harmonic[ch, n] = ld.ReadBit(); + } + } + /* table 10 */ + + private void SbrEnvelope(BitStream ld, int ch) + { + int env, band; + int delta = 0; + int[] + [] + t_huff, f_huff; + + if (_L_E[ch] == 1 && _bs_frame_class[ch] == Constants.FIXFIX) + _ampRes[ch] = false; + else + _ampRes[ch] = _bs_amp_res; + + if (_bs_coupling && ch == 1) + { + delta = 1; + if (_ampRes[ch]) + { + t_huff = HuffmanTables.T_HUFFMAN_ENV_BAL_3_0DB; + f_huff = HuffmanTables.F_HUFFMAN_ENV_BAL_3_0DB; + } + else + { + t_huff = HuffmanTables.T_HUFFMAN_ENV_BAL_1_5DB; + f_huff = HuffmanTables.F_HUFFMAN_ENV_BAL_1_5DB; + } + } + else + { + delta = 0; + if (_ampRes[ch]) + { + t_huff = HuffmanTables.T_HUFFMAN_ENV_3_0DB; + f_huff = HuffmanTables.F_HUFFMAN_ENV_3_0DB; + } + else + { + t_huff = HuffmanTables.T_HUFFMAN_ENV_1_5DB; + f_huff = HuffmanTables.F_HUFFMAN_ENV_1_5DB; + } + } + + for (env = 0; env < _L_E[ch]; env++) + { + if (_bs_df_env[ch, env] == 0) + { + if (_bs_coupling && ch == 1) + { + if (_ampRes[ch]) + { + _E[ch, 0, env] = ld.ReadBits(5) << delta; + } + else + { + _E[ch, 0, env] = ld.ReadBits(6) << delta; + } + } + else + { + if (_ampRes[ch]) + { + _E[ch, 0, env] = ld.ReadBits(6) << delta; + } + else + { + _E[ch, 0, env] = ld.ReadBits(7) << delta; + } + } + + for (band = 1; band < _n[_f[ch, env]]; band++) + { + _E[ch, band, env] = DecodeHuffman(ld, f_huff) << delta; + } + + } + else + { + for (band = 0; band < _n[_f[ch, env]]; band++) + { + _E[ch, band, env] = DecodeHuffman(ld, t_huff) << delta; + } + } + } + + NoiseEnvelope.ExtractEnvelopeData(this, ch); + } + + /* table 11 */ + private void SbrNoise(BitStream ld, int ch) + { + int noise, band; + int delta = 0; + int[] + [] + t_huff, f_huff; + + if (_bs_coupling && ch == 1) + { + delta = 1; + t_huff = HuffmanTables.T_HUFFMAN_NOISE_BAL_3_0DB; + f_huff = HuffmanTables.F_HUFFMAN_ENV_BAL_3_0DB; + } + else + { + delta = 0; + t_huff = HuffmanTables.T_HUFFMAN_NOISE_3_0DB; + f_huff = HuffmanTables.F_HUFFMAN_ENV_3_0DB; + } + + for (noise = 0; noise < _L_Q[ch]; noise++) + { + if (_bs_df_noise[ch, noise] == 0) + { + if (_bs_coupling && ch == 1) + { + _Q[ch, 0, noise] = ld.ReadBits(5) << delta; + } + else + { + _Q[ch, 0, noise] = ld.ReadBits(5) << delta; + } + for (band = 1; band < _N_Q; band++) + { + _Q[ch, band, noise] = DecodeHuffman(ld, f_huff) << delta; + } + } + else + { + for (band = 0; band < _N_Q; band++) + { + _Q[ch, band, noise] = DecodeHuffman(ld, t_huff) << delta; + } + } + } + + NoiseEnvelope.ExtractNoiseFloorData(this, ch); + } + + private int DecodeHuffman(BitStream ld, int[][] t_huff) + { + int bit; + int index = 0; + + while (index >= 0) + { + bit = ld.ReadBit(); + index = t_huff[index][bit]; + } + + return index + 64; + } + + private int SbrSavePrevData(int ch) + { + int i; + + /* save data for next frame */ + _kx_prev = _kx; + _M_prev = _M; + _bsco_prev = _bsco; + + _L_E_prev[ch] = _L_E[ch]; + + /* sbr.L_E[ch] can become 0 on files with bit errors */ + if (_L_E[ch] <= 0) + return 19; + + _f_prev[ch] = _f[ch, _L_E[ch] - 1]; + for (i = 0; i < Constants.MAX_M; i++) + { + _E_prev[ch, i] = _E[ch, i, _L_E[ch] - 1]; + _Q_prev[ch, i] = _Q[ch, i, _L_Q[ch] - 1]; + } + + for (i = 0; i < Constants.MAX_M; i++) + { + _bs_add_harmonic_prev[ch, i] = _bs_add_harmonic[ch, i]; + } + _bs_add_harmonic_flag_prev[ch] = _bs_add_harmonic_flag[ch]; + + if (_l_A[ch] == _L_E[ch]) + _prevEnvIsShort[ch] = 0; + else + _prevEnvIsShort[ch] = -1; + + return 0; + } + + private void SbrSaveMatrix(int ch) + { + int i; + + for (i = 0; i < _tHFGen; i++) + { + for (int j = 0; j < 64; j++) + { + _Xsbr[ch, i, j, 0] = _Xsbr[ch, i + _numTimeSlotsRate, j, 0]; + _Xsbr[ch, i, j, 1] = _Xsbr[ch, i + _numTimeSlotsRate, j, 1]; + } + } + for (i = _tHFGen; i < Constants.MAX_NTSRHFG; i++) + { + for (int j = 0; j < 64; j++) + { + _Xsbr[ch, i, j, 0] = 0; + _Xsbr[ch, i, j, 1] = 0; + } + } + } + + private int SbrProcessChannel(float[] channel_buf, float[,,] X, + int ch, bool dont_process) + { + int k, l; + int ret = 0; + + _bsco = 0; + + /* subband analysis */ + if (dont_process) + _qmfa[ch].SbrQmfAnalysis32(this, channel_buf, _Xsbr, ch, _tHFGen, 32); + else + _qmfa[ch].SbrQmfAnalysis32(this, channel_buf, _Xsbr, ch, _tHFGen, _kx); + + if (!dont_process) + { + /* insert high frequencies here */ + /* hf generation using patching */ + HFGeneration.HfGeneration(this, _Xsbr, _Xsbr, ch); + + + /* hf adjustment */ + ret = HFAdjustment.HfAdjustment(this, _Xsbr, ch); + if (ret > 0) + { + dont_process = true; + } + } + + if (_justSeeked || dont_process) + { + for (l = 0; l < _numTimeSlotsRate; l++) + { + for (k = 0; k < 32; k++) + { + X[l, k, 0] = _Xsbr[ch, l + _tHFAdj, k, 0]; + X[l, k, 1] = _Xsbr[ch, l + _tHFAdj, k, 1]; + } + for (k = 32; k < 64; k++) + { + X[l, k, 0] = 0; + X[l, k, 1] = 0; + } + } + } + else + { + for (l = 0; l < _numTimeSlotsRate; l++) + { + int kx_band, M_band, bsco_band; + + if (l < _t_E[ch, 0]) + { + kx_band = _kx_prev; + M_band = _M_prev; + bsco_band = _bsco_prev; + } + else + { + kx_band = _kx; + M_band = _M; + bsco_band = _bsco; + } + + for (k = 0; k < kx_band + bsco_band; k++) + { + X[l, k, 0] = _Xsbr[ch, l + _tHFAdj, k, 0]; + X[l, k, 1] = _Xsbr[ch, l + _tHFAdj, k, 1]; + } + for (k = kx_band + bsco_band; k < kx_band + M_band; k++) + { + X[l, k, 0] = _Xsbr[ch, l + _tHFAdj, k, 0]; + X[l, k, 1] = _Xsbr[ch, l + _tHFAdj, k, 1]; + } + for (k = Math.Max(kx_band + bsco_band, kx_band + M_band); k < 64; k++) + { + X[l, k, 0] = 0; + X[l, k, 1] = 0; + } + } + } + return ret; + } + + public int Process(float[] left_chan, float[] right_chan, + bool just_seeked) + { + bool dont_process = false; + int ret = 0; + float[,,] X = new float[Constants.MAX_NTSR, 64, 2]; + + /* case can occur due to bit errors */ + if (!_stereo) return 21; + + if (_ret != 0 || _header_count == 0) + { + /* don't process just upsample */ + dont_process = true; + + /* Re-activate reset for next frame */ + if (_ret != 0 && _Reset) + _bs_start_freq_prev = -1; + } + + if (just_seeked) + { + _justSeeked = true; + } + else + { + _justSeeked = false; + } + + _ret += SbrProcessChannel(left_chan, X, 0, dont_process); + /* subband synthesis */ + if (_downSampledSBR) + { + _qmfs[0].SbrQmfSynthesis32(this, X, left_chan); + } + else + { + _qmfs[0].SbrQmfSynthesis64(this, X, left_chan); + } + + _ret += SbrProcessChannel(right_chan, X, 1, dont_process); + /* subband synthesis */ + if (_downSampledSBR) + { + _qmfs[1].SbrQmfSynthesis32(this, X, right_chan); + } + else + { + _qmfs[1].SbrQmfSynthesis64(this, X, right_chan); + } + + if (_bs_header_flag) + _justSeeked = false; + + if (_header_count != 0 && _ret == 0) + { + ret = SbrSavePrevData(0); + if (ret != 0) return ret; + ret = SbrSavePrevData(1); + if (ret != 0) return ret; + } + + SbrSaveMatrix(0); + SbrSaveMatrix(1); + _frame++; + + return 0; + } + + public int Process(float[] channel, + bool just_seeked) + { + bool dont_process = false; + int ret = 0; + float[,,] X = new float[Constants.MAX_NTSR, 64, 2]; + + /* case can occur due to bit errors */ + if (_stereo) return 21; + + if (_ret != 0 || _header_count == 0) + { + /* don't process just upsample */ + dont_process = true; + + /* Re-activate reset for next frame */ + if (_ret != 0 && _Reset) + _bs_start_freq_prev = -1; + } + + if (just_seeked) + { + _justSeeked = true; + } + else + { + _justSeeked = false; + } + + _ret += SbrProcessChannel(channel, X, 0, dont_process); + /* subband synthesis */ + if (_downSampledSBR) + { + _qmfs[0].SbrQmfSynthesis32(this, X, channel); + } + else + { + _qmfs[0].SbrQmfSynthesis64(this, X, channel); + } + + if (_bs_header_flag) + _justSeeked = false; + + if (_header_count != 0 && _ret == 0) + { + ret = SbrSavePrevData(0); + if (ret != 0) return ret; + } + + SbrSaveMatrix(0); + + _frame++; + + return 0; + } + + public int ProcessPS(float[] left_channel, float[] right_channel, + bool just_seeked) + { + int l, k; + bool dont_process = false; + int ret = 0; + float[,,] X_left = new float[38, 64, 2]; + float[,,] X_right = new float[38, 64, 2]; + + /* case can occur due to bit errors */ + if (_stereo) return 21; + + if (_ret != 0 || _header_count == 0) + { + /* don't process just upsample */ + dont_process = true; + + /* Re-activate reset for next frame */ + if (_ret != 0 && _Reset) + _bs_start_freq_prev = -1; + } + + if (just_seeked) + { + _justSeeked = true; + } + else + { + _justSeeked = false; + } + + if (_qmfs[1] == null) + { + _qmfs[1] = new SynthesisFilterbank(_downSampledSBR ? 32 : 64); + } + + _ret += SbrProcessChannel(left_channel, X_left, 0, dont_process); + + /* copy some extra data for PS */ + for (l = _numTimeSlotsRate; l < _numTimeSlotsRate + 6; l++) + { + for (k = 0; k < 5; k++) + { + X_left[l, k, 0] = _Xsbr[0, _tHFAdj + l, k, 0]; + X_left[l, k, 1] = _Xsbr[0, _tHFAdj + l, k, 1]; + } + } + + /* perform parametric stereo */ + _ps.Process(X_left, X_right); + + /* subband synthesis */ + if (_downSampledSBR) + { + _qmfs[0].SbrQmfSynthesis32(this, X_left, left_channel); + _qmfs[1].SbrQmfSynthesis32(this, X_right, right_channel); + } + else + { + _qmfs[0].SbrQmfSynthesis64(this, X_left, left_channel); + _qmfs[1].SbrQmfSynthesis64(this, X_right, right_channel); + } + + if (_bs_header_flag) + _justSeeked = false; + + if (_header_count != 0 && _ret == 0) + { + ret = SbrSavePrevData(0); + if (ret != 0) return ret; + } + SbrSaveMatrix(0); + + _frame++; + + return 0; + } + + public bool IsPSUsed() + { + return _ps_used; + } + } +} diff --git a/SharpJaad.AAC/Sbr/SynthesisFilterbank.cs b/SharpJaad.AAC/Sbr/SynthesisFilterbank.cs new file mode 100644 index 0000000..eb5c2e3 --- /dev/null +++ b/SharpJaad.AAC/Sbr/SynthesisFilterbank.cs @@ -0,0 +1,1044 @@ +using SharpJaad.AAC.Tools; + +namespace SharpJaad.AAC.Sbr +{ + public class SynthesisFilterbank + { + private static float[,] qmf32_pre_twiddle = { + {0.999924701839145f, -0.012271538285720f}, + {0.999322384588350f, -0.036807222941359f}, + {0.998118112900149f, -0.061320736302209f}, + {0.996312612182778f, -0.085797312344440f}, + {0.993906970002356f, -0.110222207293883f}, + {0.990902635427780f, -0.134580708507126f}, + {0.987301418157858f, -0.158858143333861f}, + {0.983105487431216f, -0.183039887955141f}, + {0.978317370719628f, -0.207111376192219f}, + {0.972939952205560f, -0.231058108280671f}, + {0.966976471044852f, -0.254865659604515f}, + {0.960430519415566f, -0.278519689385053f}, + {0.953306040354194f, -0.302005949319228f}, + {0.945607325380521f, -0.325310292162263f}, + {0.937339011912575f, -0.348418680249435f}, + {0.928506080473216f, -0.371317193951838f}, + {0.919113851690058f, -0.393992040061048f}, + {0.909167983090522f, -0.416429560097637f}, + {0.898674465693954f, -0.438616238538528f}, + {0.887639620402854f, -0.460538710958240f}, + {0.876070094195407f, -0.482183772079123f}, + {0.863972856121587f, -0.503538383725718f}, + {0.851355193105265f, -0.524589682678469f}, + {0.838224705554838f, -0.545324988422046f}, + {0.824589302785025f, -0.565731810783613f}, + {0.810457198252595f, -0.585797857456439f}, + {0.795836904608884f, -0.605511041404326f}, + {0.780737228572094f, -0.624859488142386f}, + {0.765167265622459f, -0.643831542889791f}, + {0.749136394523459f, -0.662415777590172f}, + {0.732654271672413f, -0.680600997795453f}, + {0.715730825283819f, -0.698376249408973f} + }; + + private float[] _v; //double ringbuffer + private int _v_index; //ringbuffer index + private int _channels; + + public SynthesisFilterbank(int channels) + { + _channels = channels; + _v = new float[2 * channels * 20]; + _v_index = 0; + } + + public void Reset() + { + Arrays.Fill(_v, 0); + } + + public void SbrQmfSynthesis32(SBR sbr, float[,,] X, + float[] output) + { + float[] x1 = new float[32], x2 = new float[32]; + float scale = 1.0f / 64.0f; + int n, k, outt = 0; + int l; + + + /* qmf subsample l */ + for (l = 0; l < sbr._numTimeSlotsRate; l++) + { + /* shift buffer v */ + /* buffer is not shifted, we are using a ringbuffer */ + //memmove(qmfs.v + 64, qmfs.v, (640-64)*sizeof(real_t)); + + /* calculate 64 samples */ + /* complex pre-twiddle */ + for (k = 0; k < 32; k++) + { + x1[k] = X[l, k, 0] * qmf32_pre_twiddle[k, 0] - X[l, k, 1] * qmf32_pre_twiddle[k, 1]; + x2[k] = X[l, k, 1] * qmf32_pre_twiddle[k, 0] + X[l, k, 0] * qmf32_pre_twiddle[k, 1]; + + x1[k] *= scale; + x2[k] *= scale; + } + + /* transform */ + DCT4_32(x1, x1); + DST4_32(x2, x2); + + for (n = 0; n < 32; n++) + { + _v[_v_index + n] = _v[_v_index + 640 + n] = -x1[n] + x2[n]; + _v[_v_index + 63 - n] = _v[_v_index + 640 + 63 - n] = x1[n] + x2[n]; + } + + /* calculate 32 output samples and window */ + for (k = 0; k < 32; k++) + { + output[outt++] = _v[_v_index + k] * FilterbankTable.qmf_c[2 * k] + + _v[_v_index + 96 + k] * FilterbankTable.qmf_c[64 + 2 * k] + + _v[_v_index + 128 + k] * FilterbankTable.qmf_c[128 + 2 * k] + + _v[_v_index + 224 + k] * FilterbankTable.qmf_c[192 + 2 * k] + + _v[_v_index + 256 + k] * FilterbankTable.qmf_c[256 + 2 * k] + + _v[_v_index + 352 + k] * FilterbankTable.qmf_c[320 + 2 * k] + + _v[_v_index + 384 + k] * FilterbankTable.qmf_c[384 + 2 * k] + + _v[_v_index + 480 + k] * FilterbankTable.qmf_c[448 + 2 * k] + + _v[_v_index + 512 + k] * FilterbankTable.qmf_c[512 + 2 * k] + + _v[_v_index + 608 + k] * FilterbankTable.qmf_c[576 + 2 * k]; + } + + /* update ringbuffer index */ + _v_index -= 64; + if (_v_index < 0) + _v_index = 640 - 64; + } + } + + public void SbrQmfSynthesis64(SBR sbr, float[,,] X, + float[] output) + { + float[] in_real1 = new float[32], in_imag1 = new float[32], out_real1 = new float[32], out_imag1 = new float[32]; + float[] in_real2 = new float[32], in_imag2 = new float[32], out_real2 = new float[32], out_imag2 = new float[32]; + float scale = 1.0f / 64.0f; + int n, k, outt = 0; + int l; + + + /* qmf subsample l */ + for (l = 0; l < sbr._numTimeSlotsRate; l++) + { + /* shift buffer v */ + /* buffer is not shifted, we use double ringbuffer */ + //memmove(qmfs.v + 128, qmfs.v, (1280-128)*sizeof(real_t)); + + /* calculate 128 samples */ + + in_imag1[31] = scale * X[l, 1, 0]; + in_real1[0] = scale * X[l, 0, 0]; + in_imag2[31] = scale * X[l, 63 - 1, 1]; + in_real2[0] = scale * X[l, 63 - 0, 1]; + for (k = 1; k < 31; k++) + { + in_imag1[31 - k] = scale * X[l, 2 * k + 1, 0]; + in_real1[k] = scale * X[l, 2 * k, 0]; + in_imag2[31 - k] = scale * X[l, 63 - (2 * k + 1), 1]; + in_real2[k] = scale * X[l, 63 - 2 * k, 1]; + } + in_imag1[0] = scale * X[l, 63, 0]; + in_real1[31] = scale * X[l, 62, 0]; + in_imag2[0] = scale * X[l, 63 - 63, 1]; + in_real2[31] = scale * X[l, 63 - 62, 1]; + + // dct4_kernel is DCT_IV without reordering which is done before and after FFT + DCT.Dct4Kernel(in_real1, in_imag1, out_real1, out_imag1); + DCT.Dct4Kernel(in_real2, in_imag2, out_real2, out_imag2); + + int pring_buffer_1 = _v_index; //*v + int pring_buffer_3 = pring_buffer_1 + 1280; + // ptemp_1 = x1; + // ptemp_2 = x2; + + for (n = 0; n < 32; n++) + { + // pring_buffer_3 and pring_buffer_4 are needed only for double ring buffer + _v[pring_buffer_1 + 2 * n] = _v[pring_buffer_3 + 2 * n] = out_real2[n] - out_real1[n]; + _v[pring_buffer_1 + 127 - 2 * n] = _v[pring_buffer_3 + 127 - 2 * n] = out_real2[n] + out_real1[n]; + _v[pring_buffer_1 + 2 * n + 1] = _v[pring_buffer_3 + 2 * n + 1] = out_imag2[31 - n] + out_imag1[31 - n]; + _v[pring_buffer_1 + 127 - (2 * n + 1)] = _v[pring_buffer_3 + 127 - (2 * n + 1)] = out_imag2[31 - n] - out_imag1[31 - n]; + } + + pring_buffer_1 = _v_index; //*v + + /* calculate 64 output samples and window */ + for (k = 0; k < 64; k++) + { + output[outt++] + = _v[pring_buffer_1 + k + 0] * FilterbankTable.qmf_c[k + 0] + + _v[pring_buffer_1 + k + 192] * FilterbankTable.qmf_c[k + 64] + + _v[pring_buffer_1 + k + 256] * FilterbankTable.qmf_c[k + 128] + + _v[pring_buffer_1 + k + 256 + 192] * FilterbankTable.qmf_c[k + 192] + + _v[pring_buffer_1 + k + 512] * FilterbankTable.qmf_c[k + 256] + + _v[pring_buffer_1 + k + 512 + 192] * FilterbankTable.qmf_c[k + 320] + + _v[pring_buffer_1 + k + 768] * FilterbankTable.qmf_c[k + 384] + + _v[pring_buffer_1 + k + 768 + 192] * FilterbankTable.qmf_c[k + 448] + + _v[pring_buffer_1 + k + 1024] * FilterbankTable.qmf_c[k + 512] + + _v[pring_buffer_1 + k + 1024 + 192] * FilterbankTable.qmf_c[k + 576]; + } + + /* update ringbuffer index */ + _v_index -= 128; + if (_v_index < 0) + _v_index = 1280 - 128; + } + } + + private void DCT4_32(float[] y, float[] x) + { + float f0, f1, f2, f3, f4, f5, f6, f7, f8, f9, f10; + float f11, f12, f13, f14, f15, f16, f17, f18, f19, f20; + float f21, f22, f23, f24, f25, f26, f27, f28, f29, f30; + float f31, f32, f33, f34, f35, f36, f37, f38, f39, f40; + float f41, f42, f43, f44, f45, f46, f47, f48, f49, f50; + float f51, f52, f53, f54, f55, f56, f57, f58, f59, f60; + float f61, f62, f63, f64, f65, f66, f67, f68, f69, f70; + float f71, f72, f73, f74, f75, f76, f77, f78, f79, f80; + float f81, f82, f83, f84, f85, f86, f87, f88, f89, f90; + float f91, f92, f93, f94, f95, f96, f97, f98, f99, f100; + float f101, f102, f103, f104, f105, f106, f107, f108, f109, f110; + float f111, f112, f113, f114, f115, f116, f117, f118, f119, f120; + float f121, f122, f123, f124, f125, f126, f127, f128, f129, f130; + float f131, f132, f133, f134, f135, f136, f137, f138, f139, f140; + float f141, f142, f143, f144, f145, f146, f147, f148, f149, f150; + float f151, f152, f153, f154, f155, f156, f157, f158, f159, f160; + float f161, f162, f163, f164, f165, f166, f167, f168, f169, f170; + float f171, f172, f173, f174, f175, f176, f177, f178, f179, f180; + float f181, f182, f183, f184, f185, f186, f187, f188, f189, f190; + float f191, f192, f193, f194, f195, f196, f197, f198, f199, f200; + float f201, f202, f203, f204, f205, f206, f207, f208, f209, f210; + float f211, f212, f213, f214, f215, f216, f217, f218, f219, f220; + float f221, f222, f223, f224, f225, f226, f227, f228, f229, f230; + float f231, f232, f233, f234, f235, f236, f237, f238, f239, f240; + float f241, f242, f243, f244, f245, f246, f247, f248, f249, f250; + float f251, f252, f253, f254, f255, f256, f257, f258, f259, f260; + float f261, f262, f263, f264, f265, f266, f267, f268, f269, f270; + float f271, f272, f273, f274, f275, f276, f277, f278, f279, f280; + float f281, f282, f283, f284, f285, f286, f287, f288, f289, f290; + float f291, f292, f293, f294, f295, f296, f297, f298, f299, f300; + float f301, f302, f303, f304, f305, f306, f307, f310, f311, f312; + float f313, f316, f317, f318, f319, f322, f323, f324, f325, f328; + float f329, f330, f331, f334, f335, f336, f337, f340, f341, f342; + float f343, f346, f347, f348, f349, f352, f353, f354, f355, f358; + float f359, f360, f361, f364, f365, f366, f367, f370, f371, f372; + float f373, f376, f377, f378, f379, f382, f383, f384, f385, f388; + float f389, f390, f391, f394, f395, f396, f397; + + f0 = x[15] - x[16]; + f1 = x[15] + x[16]; + f2 = 0.7071067811865476f * f1; + f3 = 0.7071067811865476f * f0; + f4 = x[8] - x[23]; + f5 = x[8] + x[23]; + f6 = 0.7071067811865476f * f5; + f7 = 0.7071067811865476f * f4; + f8 = x[12] - x[19]; + f9 = x[12] + x[19]; + f10 = 0.7071067811865476f * f9; + f11 = 0.7071067811865476f * f8; + f12 = x[11] - x[20]; + f13 = x[11] + x[20]; + f14 = 0.7071067811865476f * f13; + f15 = 0.7071067811865476f * f12; + f16 = x[14] - x[17]; + f17 = x[14] + x[17]; + f18 = 0.7071067811865476f * f17; + f19 = 0.7071067811865476f * f16; + f20 = x[9] - x[22]; + f21 = x[9] + x[22]; + f22 = 0.7071067811865476f * f21; + f23 = 0.7071067811865476f * f20; + f24 = x[13] - x[18]; + f25 = x[13] + x[18]; + f26 = 0.7071067811865476f * f25; + f27 = 0.7071067811865476f * f24; + f28 = x[10] - x[21]; + f29 = x[10] + x[21]; + f30 = 0.7071067811865476f * f29; + f31 = 0.7071067811865476f * f28; + f32 = x[0] - f2; + f33 = x[0] + f2; + f34 = x[31] - f3; + f35 = x[31] + f3; + f36 = x[7] - f6; + f37 = x[7] + f6; + f38 = x[24] - f7; + f39 = x[24] + f7; + f40 = x[3] - f10; + f41 = x[3] + f10; + f42 = x[28] - f11; + f43 = x[28] + f11; + f44 = x[4] - f14; + f45 = x[4] + f14; + f46 = x[27] - f15; + f47 = x[27] + f15; + f48 = x[1] - f18; + f49 = x[1] + f18; + f50 = x[30] - f19; + f51 = x[30] + f19; + f52 = x[6] - f22; + f53 = x[6] + f22; + f54 = x[25] - f23; + f55 = x[25] + f23; + f56 = x[2] - f26; + f57 = x[2] + f26; + f58 = x[29] - f27; + f59 = x[29] + f27; + f60 = x[5] - f30; + f61 = x[5] + f30; + f62 = x[26] - f31; + f63 = x[26] + f31; + f64 = f39 + f37; + f65 = -0.5411961001461969f * f39; + f66 = 0.9238795325112867f * f64; + f67 = 1.3065629648763766f * f37; + f68 = f65 + f66; + f69 = f67 - f66; + f70 = f38 + f36; + f71 = 1.3065629648763770f * f38; + f72 = -0.3826834323650904f * f70; + f73 = 0.5411961001461961f * f36; + f74 = f71 + f72; + f75 = f73 - f72; + f76 = f47 + f45; + f77 = -0.5411961001461969f * f47; + f78 = 0.9238795325112867f * f76; + f79 = 1.3065629648763766f * f45; + f80 = f77 + f78; + f81 = f79 - f78; + f82 = f46 + f44; + f83 = 1.3065629648763770f * f46; + f84 = -0.3826834323650904f * f82; + f85 = 0.5411961001461961f * f44; + f86 = f83 + f84; + f87 = f85 - f84; + f88 = f55 + f53; + f89 = -0.5411961001461969f * f55; + f90 = 0.9238795325112867f * f88; + f91 = 1.3065629648763766f * f53; + f92 = f89 + f90; + f93 = f91 - f90; + f94 = f54 + f52; + f95 = 1.3065629648763770f * f54; + f96 = -0.3826834323650904f * f94; + f97 = 0.5411961001461961f * f52; + f98 = f95 + f96; + f99 = f97 - f96; + f100 = f63 + f61; + f101 = -0.5411961001461969f * f63; + f102 = 0.9238795325112867f * f100; + f103 = 1.3065629648763766f * f61; + f104 = f101 + f102; + f105 = f103 - f102; + f106 = f62 + f60; + f107 = 1.3065629648763770f * f62; + f108 = -0.3826834323650904f * f106; + f109 = 0.5411961001461961f * f60; + f110 = f107 + f108; + f111 = f109 - f108; + f112 = f33 - f68; + f113 = f33 + f68; + f114 = f35 - f69; + f115 = f35 + f69; + f116 = f32 - f74; + f117 = f32 + f74; + f118 = f34 - f75; + f119 = f34 + f75; + f120 = f41 - f80; + f121 = f41 + f80; + f122 = f43 - f81; + f123 = f43 + f81; + f124 = f40 - f86; + f125 = f40 + f86; + f126 = f42 - f87; + f127 = f42 + f87; + f128 = f49 - f92; + f129 = f49 + f92; + f130 = f51 - f93; + f131 = f51 + f93; + f132 = f48 - f98; + f133 = f48 + f98; + f134 = f50 - f99; + f135 = f50 + f99; + f136 = f57 - f104; + f137 = f57 + f104; + f138 = f59 - f105; + f139 = f59 + f105; + f140 = f56 - f110; + f141 = f56 + f110; + f142 = f58 - f111; + f143 = f58 + f111; + f144 = f123 + f121; + f145 = -0.7856949583871021f * f123; + f146 = 0.9807852804032304f * f144; + f147 = 1.1758756024193588f * f121; + f148 = f145 + f146; + f149 = f147 - f146; + f150 = f127 + f125; + f151 = 0.2758993792829431f * f127; + f152 = 0.5555702330196022f * f150; + f153 = 1.3870398453221475f * f125; + f154 = f151 + f152; + f155 = f153 - f152; + f156 = f122 + f120; + f157 = 1.1758756024193591f * f122; + f158 = -0.1950903220161287f * f156; + f159 = 0.7856949583871016f * f120; + f160 = f157 + f158; + f161 = f159 - f158; + f162 = f126 + f124; + f163 = 1.3870398453221473f * f126; + f164 = -0.8314696123025455f * f162; + f165 = -0.2758993792829436f * f124; + f166 = f163 + f164; + f167 = f165 - f164; + f168 = f139 + f137; + f169 = -0.7856949583871021f * f139; + f170 = 0.9807852804032304f * f168; + f171 = 1.1758756024193588f * f137; + f172 = f169 + f170; + f173 = f171 - f170; + f174 = f143 + f141; + f175 = 0.2758993792829431f * f143; + f176 = 0.5555702330196022f * f174; + f177 = 1.3870398453221475f * f141; + f178 = f175 + f176; + f179 = f177 - f176; + f180 = f138 + f136; + f181 = 1.1758756024193591f * f138; + f182 = -0.1950903220161287f * f180; + f183 = 0.7856949583871016f * f136; + f184 = f181 + f182; + f185 = f183 - f182; + f186 = f142 + f140; + f187 = 1.3870398453221473f * f142; + f188 = -0.8314696123025455f * f186; + f189 = -0.2758993792829436f * f140; + f190 = f187 + f188; + f191 = f189 - f188; + f192 = f113 - f148; + f193 = f113 + f148; + f194 = f115 - f149; + f195 = f115 + f149; + f196 = f117 - f154; + f197 = f117 + f154; + f198 = f119 - f155; + f199 = f119 + f155; + f200 = f112 - f160; + f201 = f112 + f160; + f202 = f114 - f161; + f203 = f114 + f161; + f204 = f116 - f166; + f205 = f116 + f166; + f206 = f118 - f167; + f207 = f118 + f167; + f208 = f129 - f172; + f209 = f129 + f172; + f210 = f131 - f173; + f211 = f131 + f173; + f212 = f133 - f178; + f213 = f133 + f178; + f214 = f135 - f179; + f215 = f135 + f179; + f216 = f128 - f184; + f217 = f128 + f184; + f218 = f130 - f185; + f219 = f130 + f185; + f220 = f132 - f190; + f221 = f132 + f190; + f222 = f134 - f191; + f223 = f134 + f191; + f224 = f211 + f209; + f225 = -0.8971675863426361f * f211; + f226 = 0.9951847266721968f * f224; + f227 = 1.0932018670017576f * f209; + f228 = f225 + f226; + f229 = f227 - f226; + f230 = f215 + f213; + f231 = -0.4105245275223571f * f215; + f232 = 0.8819212643483549f * f230; + f233 = 1.3533180011743529f * f213; + f234 = f231 + f232; + f235 = f233 - f232; + f236 = f219 + f217; + f237 = 0.1386171691990915f * f219; + f238 = 0.6343932841636455f * f236; + f239 = 1.4074037375263826f * f217; + f240 = f237 + f238; + f241 = f239 - f238; + f242 = f223 + f221; + f243 = 0.6666556584777466f * f223; + f244 = 0.2902846772544623f * f242; + f245 = 1.2472250129866711f * f221; + f246 = f243 + f244; + f247 = f245 - f244; + f248 = f210 + f208; + f249 = 1.0932018670017574f * f210; + f250 = -0.0980171403295605f * f248; + f251 = 0.8971675863426364f * f208; + f252 = f249 + f250; + f253 = f251 - f250; + f254 = f214 + f212; + f255 = 1.3533180011743529f * f214; + f256 = -0.4713967368259979f * f254; + f257 = 0.4105245275223569f * f212; + f258 = f255 + f256; + f259 = f257 - f256; + f260 = f218 + f216; + f261 = 1.4074037375263826f * f218; + f262 = -0.7730104533627369f * f260; + f263 = -0.1386171691990913f * f216; + f264 = f261 + f262; + f265 = f263 - f262; + f266 = f222 + f220; + f267 = 1.2472250129866711f * f222; + f268 = -0.9569403357322089f * f266; + f269 = -0.6666556584777469f * f220; + f270 = f267 + f268; + f271 = f269 - f268; + f272 = f193 - f228; + f273 = f193 + f228; + f274 = f195 - f229; + f275 = f195 + f229; + f276 = f197 - f234; + f277 = f197 + f234; + f278 = f199 - f235; + f279 = f199 + f235; + f280 = f201 - f240; + f281 = f201 + f240; + f282 = f203 - f241; + f283 = f203 + f241; + f284 = f205 - f246; + f285 = f205 + f246; + f286 = f207 - f247; + f287 = f207 + f247; + f288 = f192 - f252; + f289 = f192 + f252; + f290 = f194 - f253; + f291 = f194 + f253; + f292 = f196 - f258; + f293 = f196 + f258; + f294 = f198 - f259; + f295 = f198 + f259; + f296 = f200 - f264; + f297 = f200 + f264; + f298 = f202 - f265; + f299 = f202 + f265; + f300 = f204 - f270; + f301 = f204 + f270; + f302 = f206 - f271; + f303 = f206 + f271; + f304 = f275 + f273; + f305 = -0.9751575901732920f * f275; + f306 = 0.9996988186962043f * f304; + f307 = 1.0242400472191164f * f273; + y[0] = f305 + f306; + y[31] = f307 - f306; + f310 = f279 + f277; + f311 = -0.8700688593994936f * f279; + f312 = 0.9924795345987100f * f310; + f313 = 1.1148902097979263f * f277; + y[2] = f311 + f312; + y[29] = f313 - f312; + f316 = f283 + f281; + f317 = -0.7566008898816587f * f283; + f318 = 0.9757021300385286f * f316; + f319 = 1.1948033701953984f * f281; + y[4] = f317 + f318; + y[27] = f319 - f318; + f322 = f287 + f285; + f323 = -0.6358464401941451f * f287; + f324 = 0.9495281805930367f * f322; + f325 = 1.2632099209919283f * f285; + y[6] = f323 + f324; + y[25] = f325 - f324; + f328 = f291 + f289; + f329 = -0.5089684416985408f * f291; + f330 = 0.9142097557035307f * f328; + f331 = 1.3194510697085207f * f289; + y[8] = f329 + f330; + y[23] = f331 - f330; + f334 = f295 + f293; + f335 = -0.3771887988789273f * f295; + f336 = 0.8700869911087114f * f334; + f337 = 1.3629851833384954f * f293; + y[10] = f335 + f336; + y[21] = f337 - f336; + f340 = f299 + f297; + f341 = -0.2417766217337384f * f299; + f342 = 0.8175848131515837f * f340; + f343 = 1.3933930045694289f * f297; + y[12] = f341 + f342; + y[19] = f343 - f342; + f346 = f303 + f301; + f347 = -0.1040360035527077f * f303; + f348 = 0.7572088465064845f * f346; + f349 = 1.4103816894602612f * f301; + y[14] = f347 + f348; + y[17] = f349 - f348; + f352 = f274 + f272; + f353 = 0.0347065382144002f * f274; + f354 = 0.6895405447370668f * f352; + f355 = 1.4137876276885337f * f272; + y[16] = f353 + f354; + y[15] = f355 - f354; + f358 = f278 + f276; + f359 = 0.1731148370459795f * f278; + f360 = 0.6152315905806268f * f358; + f361 = 1.4035780182072330f * f276; + y[18] = f359 + f360; + y[13] = f361 - f360; + f364 = f282 + f280; + f365 = 0.3098559453626100f * f282; + f366 = 0.5349976198870972f * f364; + f367 = 1.3798511851368043f * f280; + y[20] = f365 + f366; + y[11] = f367 - f366; + f370 = f286 + f284; + f371 = 0.4436129715409088f * f286; + f372 = 0.4496113296546065f * f370; + f373 = 1.3428356308501219f * f284; + y[22] = f371 + f372; + y[9] = f373 - f372; + f376 = f290 + f288; + f377 = 0.5730977622997509f * f290; + f378 = 0.3598950365349881f * f376; + f379 = 1.2928878353697271f * f288; + y[24] = f377 + f378; + y[7] = f379 - f378; + f382 = f294 + f292; + f383 = 0.6970633083205415f * f294; + f384 = 0.2667127574748984f * f382; + f385 = 1.2304888232703382f * f292; + y[26] = f383 + f384; + y[5] = f385 - f384; + f388 = f298 + f296; + f389 = 0.8143157536286401f * f298; + f390 = 0.1709618887603012f * f388; + f391 = 1.1562395311492424f * f296; + y[28] = f389 + f390; + y[3] = f391 - f390; + f394 = f302 + f300; + f395 = 0.9237258930790228f * f302; + f396 = 0.0735645635996674f * f394; + f397 = 1.0708550202783576f * f300; + y[30] = f395 + f396; + y[1] = f397 - f396; + } + + private void DST4_32(float[] y, float[] x) + { + float f0, f1, f2, f3, f4, f5, f6, f7, f8, f9; + float f10, f11, f12, f13, f14, f15, f16, f17, f18, f19; + float f20, f21, f22, f23, f24, f25, f26, f27, f28, f29; + float f30, f31, f32, f33, f34, f35, f36, f37, f38, f39; + float f40, f41, f42, f43, f44, f45, f46, f47, f48, f49; + float f50, f51, f52, f53, f54, f55, f56, f57, f58, f59; + float f60, f61, f62, f63, f64, f65, f66, f67, f68, f69; + float f70, f71, f72, f73, f74, f75, f76, f77, f78, f79; + float f80, f81, f82, f83, f84, f85, f86, f87, f88, f89; + float f90, f91, f92, f93, f94, f95, f96, f97, f98, f99; + float f100, f101, f102, f103, f104, f105, f106, f107, f108, f109; + float f110, f111, f112, f113, f114, f115, f116, f117, f118, f119; + float f120, f121, f122, f123, f124, f125, f126, f127, f128, f129; + float f130, f131, f132, f133, f134, f135, f136, f137, f138, f139; + float f140, f141, f142, f143, f144, f145, f146, f147, f148, f149; + float f150, f151, f152, f153, f154, f155, f156, f157, f158, f159; + float f160, f161, f162, f163, f164, f165, f166, f167, f168, f169; + float f170, f171, f172, f173, f174, f175, f176, f177, f178, f179; + float f180, f181, f182, f183, f184, f185, f186, f187, f188, f189; + float f190, f191, f192, f193, f194, f195, f196, f197, f198, f199; + float f200, f201, f202, f203, f204, f205, f206, f207, f208, f209; + float f210, f211, f212, f213, f214, f215, f216, f217, f218, f219; + float f220, f221, f222, f223, f224, f225, f226, f227, f228, f229; + float f230, f231, f232, f233, f234, f235, f236, f237, f238, f239; + float f240, f241, f242, f243, f244, f245, f246, f247, f248, f249; + float f250, f251, f252, f253, f254, f255, f256, f257, f258, f259; + float f260, f261, f262, f263, f264, f265, f266, f267, f268, f269; + float f270, f271, f272, f273, f274, f275, f276, f277, f278, f279; + float f280, f281, f282, f283, f284, f285, f286, f287, f288, f289; + float f290, f291, f292, f293, f294, f295, f296, f297, f298, f299; + float f300, f301, f302, f303, f304, f305, f306, f307, f308, f309; + float f310, f311, f312, f313, f314, f315, f316, f317, f318, f319; + float f320, f321, f322, f323, f324, f325, f326, f327, f328, f329; + float f330, f331, f332, f333, f334, f335; + + f0 = x[0] - x[1]; + f1 = x[2] - x[1]; + f2 = x[2] - x[3]; + f3 = x[4] - x[3]; + f4 = x[4] - x[5]; + f5 = x[6] - x[5]; + f6 = x[6] - x[7]; + f7 = x[8] - x[7]; + f8 = x[8] - x[9]; + f9 = x[10] - x[9]; + f10 = x[10] - x[11]; + f11 = x[12] - x[11]; + f12 = x[12] - x[13]; + f13 = x[14] - x[13]; + f14 = x[14] - x[15]; + f15 = x[16] - x[15]; + f16 = x[16] - x[17]; + f17 = x[18] - x[17]; + f18 = x[18] - x[19]; + f19 = x[20] - x[19]; + f20 = x[20] - x[21]; + f21 = x[22] - x[21]; + f22 = x[22] - x[23]; + f23 = x[24] - x[23]; + f24 = x[24] - x[25]; + f25 = x[26] - x[25]; + f26 = x[26] - x[27]; + f27 = x[28] - x[27]; + f28 = x[28] - x[29]; + f29 = x[30] - x[29]; + f30 = x[30] - x[31]; + f31 = 0.7071067811865476f * f15; + f32 = x[0] - f31; + f33 = x[0] + f31; + f34 = f7 + f23; + f35 = 1.3065629648763766f * f7; + f36 = -0.9238795325112866f * f34; + f37 = -0.5411961001461967f * f23; + f38 = f35 + f36; + f39 = f37 - f36; + f40 = f33 - f39; + f41 = f33 + f39; + f42 = f32 - f38; + f43 = f32 + f38; + f44 = f11 - f19; + f45 = f11 + f19; + f46 = 0.7071067811865476f * f45; + f47 = f3 - f46; + f48 = f3 + f46; + f49 = 0.7071067811865476f * f44; + f50 = f49 - f27; + f51 = f49 + f27; + f52 = f51 + f48; + f53 = -0.7856949583871021f * f51; + f54 = 0.9807852804032304f * f52; + f55 = 1.1758756024193588f * f48; + f56 = f53 + f54; + f57 = f55 - f54; + f58 = f50 + f47; + f59 = -0.2758993792829430f * f50; + f60 = 0.8314696123025452f * f58; + f61 = 1.3870398453221475f * f47; + f62 = f59 + f60; + f63 = f61 - f60; + f64 = f41 - f56; + f65 = f41 + f56; + f66 = f43 - f62; + f67 = f43 + f62; + f68 = f42 - f63; + f69 = f42 + f63; + f70 = f40 - f57; + f71 = f40 + f57; + f72 = f5 - f9; + f73 = f5 + f9; + f74 = f13 - f17; + f75 = f13 + f17; + f76 = f21 - f25; + f77 = f21 + f25; + f78 = 0.7071067811865476f * f75; + f79 = f1 - f78; + f80 = f1 + f78; + f81 = f73 + f77; + f82 = 1.3065629648763766f * f73; + f83 = -0.9238795325112866f * f81; + f84 = -0.5411961001461967f * f77; + f85 = f82 + f83; + f86 = f84 - f83; + f87 = f80 - f86; + f88 = f80 + f86; + f89 = f79 - f85; + f90 = f79 + f85; + f91 = 0.7071067811865476f * f74; + f92 = f29 - f91; + f93 = f29 + f91; + f94 = f76 + f72; + f95 = 1.3065629648763766f * f76; + f96 = -0.9238795325112866f * f94; + f97 = -0.5411961001461967f * f72; + f98 = f95 + f96; + f99 = f97 - f96; + f100 = f93 - f99; + f101 = f93 + f99; + f102 = f92 - f98; + f103 = f92 + f98; + f104 = f101 + f88; + f105 = -0.8971675863426361f * f101; + f106 = 0.9951847266721968f * f104; + f107 = 1.0932018670017576f * f88; + f108 = f105 + f106; + f109 = f107 - f106; + f110 = f90 - f103; + f111 = -0.6666556584777466f * f103; + f112 = 0.9569403357322089f * f110; + f113 = 1.2472250129866713f * f90; + f114 = f112 - f111; + f115 = f113 - f112; + f116 = f102 + f89; + f117 = -0.4105245275223571f * f102; + f118 = 0.8819212643483549f * f116; + f119 = 1.3533180011743529f * f89; + f120 = f117 + f118; + f121 = f119 - f118; + f122 = f87 - f100; + f123 = -0.1386171691990915f * f100; + f124 = 0.7730104533627370f * f122; + f125 = 1.4074037375263826f * f87; + f126 = f124 - f123; + f127 = f125 - f124; + f128 = f65 - f108; + f129 = f65 + f108; + f130 = f67 - f114; + f131 = f67 + f114; + f132 = f69 - f120; + f133 = f69 + f120; + f134 = f71 - f126; + f135 = f71 + f126; + f136 = f70 - f127; + f137 = f70 + f127; + f138 = f68 - f121; + f139 = f68 + f121; + f140 = f66 - f115; + f141 = f66 + f115; + f142 = f64 - f109; + f143 = f64 + f109; + f144 = f0 + f30; + f145 = 1.0478631305325901f * f0; + f146 = -0.9987954562051724f * f144; + f147 = -0.9497277818777548f * f30; + f148 = f145 + f146; + f149 = f147 - f146; + f150 = f4 + f26; + f151 = 1.2130114330978077f * f4; + f152 = -0.9700312531945440f * f150; + f153 = -0.7270510732912803f * f26; + f154 = f151 + f152; + f155 = f153 - f152; + f156 = f8 + f22; + f157 = 1.3315443865537255f * f8; + f158 = -0.9039892931234433f * f156; + f159 = -0.4764341996931612f * f22; + f160 = f157 + f158; + f161 = f159 - f158; + f162 = f12 + f18; + f163 = 1.3989068359730781f * f12; + f164 = -0.8032075314806453f * f162; + f165 = -0.2075082269882124f * f18; + f166 = f163 + f164; + f167 = f165 - f164; + f168 = f16 + f14; + f169 = 1.4125100802019777f * f16; + f170 = -0.6715589548470187f * f168; + f171 = 0.0693921705079402f * f14; + f172 = f169 + f170; + f173 = f171 - f170; + f174 = f20 + f10; + f175 = 1.3718313541934939f * f20; + f176 = -0.5141027441932219f * f174; + f177 = 0.3436258658070501f * f10; + f178 = f175 + f176; + f179 = f177 - f176; + f180 = f24 + f6; + f181 = 1.2784339185752409f * f24; + f182 = -0.3368898533922200f * f180; + f183 = 0.6046542117908008f * f6; + f184 = f181 + f182; + f185 = f183 - f182; + f186 = f28 + f2; + f187 = 1.1359069844201433f * f28; + f188 = -0.1467304744553624f * f186; + f189 = 0.8424460355094185f * f2; + f190 = f187 + f188; + f191 = f189 - f188; + f192 = f149 - f173; + f193 = f149 + f173; + f194 = f148 - f172; + f195 = f148 + f172; + f196 = f155 - f179; + f197 = f155 + f179; + f198 = f154 - f178; + f199 = f154 + f178; + f200 = f161 - f185; + f201 = f161 + f185; + f202 = f160 - f184; + f203 = f160 + f184; + f204 = f167 - f191; + f205 = f167 + f191; + f206 = f166 - f190; + f207 = f166 + f190; + f208 = f192 + f194; + f209 = 1.1758756024193588f * f192; + f210 = -0.9807852804032304f * f208; + f211 = -0.7856949583871021f * f194; + f212 = f209 + f210; + f213 = f211 - f210; + f214 = f196 + f198; + f215 = 1.3870398453221475f * f196; + f216 = -0.5555702330196022f * f214; + f217 = 0.2758993792829431f * f198; + f218 = f215 + f216; + f219 = f217 - f216; + f220 = f200 + f202; + f221 = 0.7856949583871022f * f200; + f222 = 0.1950903220161283f * f220; + f223 = 1.1758756024193586f * f202; + f224 = f221 + f222; + f225 = f223 - f222; + f226 = f204 + f206; + f227 = -0.2758993792829430f * f204; + f228 = 0.8314696123025452f * f226; + f229 = 1.3870398453221475f * f206; + f230 = f227 + f228; + f231 = f229 - f228; + f232 = f193 - f201; + f233 = f193 + f201; + f234 = f195 - f203; + f235 = f195 + f203; + f236 = f197 - f205; + f237 = f197 + f205; + f238 = f199 - f207; + f239 = f199 + f207; + f240 = f213 - f225; + f241 = f213 + f225; + f242 = f212 - f224; + f243 = f212 + f224; + f244 = f219 - f231; + f245 = f219 + f231; + f246 = f218 - f230; + f247 = f218 + f230; + f248 = f232 + f234; + f249 = 1.3065629648763766f * f232; + f250 = -0.9238795325112866f * f248; + f251 = -0.5411961001461967f * f234; + f252 = f249 + f250; + f253 = f251 - f250; + f254 = f236 + f238; + f255 = 0.5411961001461969f * f236; + f256 = 0.3826834323650898f * f254; + f257 = 1.3065629648763766f * f238; + f258 = f255 + f256; + f259 = f257 - f256; + f260 = f240 + f242; + f261 = 1.3065629648763766f * f240; + f262 = -0.9238795325112866f * f260; + f263 = -0.5411961001461967f * f242; + f264 = f261 + f262; + f265 = f263 - f262; + f266 = f244 + f246; + f267 = 0.5411961001461969f * f244; + f268 = 0.3826834323650898f * f266; + f269 = 1.3065629648763766f * f246; + f270 = f267 + f268; + f271 = f269 - f268; + f272 = f233 - f237; + f273 = f233 + f237; + f274 = f235 - f239; + f275 = f235 + f239; + f276 = f253 - f259; + f277 = f253 + f259; + f278 = f252 - f258; + f279 = f252 + f258; + f280 = f241 - f245; + f281 = f241 + f245; + f282 = f243 - f247; + f283 = f243 + f247; + f284 = f265 - f271; + f285 = f265 + f271; + f286 = f264 - f270; + f287 = f264 + f270; + f288 = f272 - f274; + f289 = f272 + f274; + f290 = 0.7071067811865474f * f288; + f291 = 0.7071067811865474f * f289; + f292 = f276 - f278; + f293 = f276 + f278; + f294 = 0.7071067811865474f * f292; + f295 = 0.7071067811865474f * f293; + f296 = f280 - f282; + f297 = f280 + f282; + f298 = 0.7071067811865474f * f296; + f299 = 0.7071067811865474f * f297; + f300 = f284 - f286; + f301 = f284 + f286; + f302 = 0.7071067811865474f * f300; + f303 = 0.7071067811865474f * f301; + f304 = f129 - f273; + f305 = f129 + f273; + f306 = f131 - f281; + f307 = f131 + f281; + f308 = f133 - f285; + f309 = f133 + f285; + f310 = f135 - f277; + f311 = f135 + f277; + f312 = f137 - f295; + f313 = f137 + f295; + f314 = f139 - f303; + f315 = f139 + f303; + f316 = f141 - f299; + f317 = f141 + f299; + f318 = f143 - f291; + f319 = f143 + f291; + f320 = f142 - f290; + f321 = f142 + f290; + f322 = f140 - f298; + f323 = f140 + f298; + f324 = f138 - f302; + f325 = f138 + f302; + f326 = f136 - f294; + f327 = f136 + f294; + f328 = f134 - f279; + f329 = f134 + f279; + f330 = f132 - f287; + f331 = f132 + f287; + f332 = f130 - f283; + f333 = f130 + f283; + f334 = f128 - f275; + f335 = f128 + f275; + y[31] = 0.5001506360206510f * f305; + y[30] = 0.5013584524464084f * f307; + y[29] = 0.5037887256810443f * f309; + y[28] = 0.5074711720725553f * f311; + y[27] = 0.5124514794082247f * f313; + y[26] = 0.5187927131053328f * f315; + y[25] = 0.5265773151542700f * f317; + y[24] = 0.5359098169079920f * f319; + y[23] = 0.5469204379855088f * f321; + y[22] = 0.5597698129470802f * f323; + y[21] = 0.5746551840326600f * f325; + y[20] = 0.5918185358574165f * f327; + y[19] = 0.6115573478825099f * f329; + y[18] = 0.6342389366884031f * f331; + y[17] = 0.6603198078137061f * f333; + y[16] = 0.6903721282002123f * f335; + y[15] = 0.7251205223771985f * f334; + y[14] = 0.7654941649730891f * f332; + y[13] = 0.8127020908144905f * f330; + y[12] = 0.8683447152233481f * f328; + y[11] = 0.9345835970364075f * f326; + y[10] = 1.0144082649970547f * f324; + y[9] = 1.1120716205797176f * f322; + y[8] = 1.2338327379765710f * f320; + y[7] = 1.3892939586328277f * f318; + y[6] = 1.5939722833856311f * f316; + y[5] = 1.8746759800084078f * f314; + y[4] = 2.2820500680051619f * f312; + y[3] = 2.9246284281582162f * f310; + y[2] = 4.0846110781292477f * f308; + y[1] = 6.7967507116736332f * f306; + y[0] = 20.3738781672314530f * f304; + } + } +} diff --git a/SharpJaad.AAC/Sbr/TFGrid.cs b/SharpJaad.AAC/Sbr/TFGrid.cs new file mode 100644 index 0000000..4ed591a --- /dev/null +++ b/SharpJaad.AAC/Sbr/TFGrid.cs @@ -0,0 +1,158 @@ +namespace SharpJaad.AAC.Sbr +{ + public class TFGrid + { + /* function constructs new time border vector */ + /* first build into temp vector to be able to use previous vector on error */ + public static int EnvelopeTimeBorderVector(SBR sbr, int ch) + { + int l, border, temp; + int[] t_E_temp = new int[6]; + + t_E_temp[0] = sbr._rate * sbr._abs_bord_lead[ch]; + t_E_temp[sbr._L_E[ch]] = sbr._rate * sbr._abs_bord_trail[ch]; + + switch (sbr._bs_frame_class[ch]) + { + case Constants.FIXFIX: + switch (sbr._L_E[ch]) + { + case 4: + temp = sbr._numTimeSlots / 4; + t_E_temp[3] = sbr._rate * 3 * temp; + t_E_temp[2] = sbr._rate * 2 * temp; + t_E_temp[1] = sbr._rate * temp; + break; + case 2: + t_E_temp[1] = sbr._rate * (sbr._numTimeSlots / 2); + break; + default: + break; + } + break; + + case Constants.FIXVAR: + if (sbr._L_E[ch] > 1) + { + int i = sbr._L_E[ch]; + border = sbr._abs_bord_trail[ch]; + + for (l = 0; l < sbr._L_E[ch] - 1; l++) + { + if (border < sbr._bs_rel_bord[ch, l]) + return 1; + + border -= sbr._bs_rel_bord[ch, l]; + t_E_temp[--i] = sbr._rate * border; + } + } + break; + + case Constants.VARFIX: + if (sbr._L_E[ch] > 1) + { + int i = 1; + border = sbr._abs_bord_lead[ch]; + + for (l = 0; l < sbr._L_E[ch] - 1; l++) + { + border += sbr._bs_rel_bord[ch, l]; + + if (sbr._rate * border + sbr._tHFAdj > sbr._numTimeSlotsRate + sbr._tHFGen) + return 1; + + t_E_temp[i++] = sbr._rate * border; + } + } + break; + + case Constants.VARVAR: + if (sbr._bs_num_rel_0[ch] != 0) + { + int i = 1; + border = sbr._abs_bord_lead[ch]; + + for (l = 0; l < sbr._bs_num_rel_0[ch]; l++) + { + border += sbr._bs_rel_bord_0[ch, l]; + + if (sbr._rate * border + sbr._tHFAdj > sbr._numTimeSlotsRate + sbr._tHFGen) + return 1; + + t_E_temp[i++] = sbr._rate * border; + } + } + + if (sbr._bs_num_rel_1[ch] != 0) + { + int i = sbr._L_E[ch]; + border = sbr._abs_bord_trail[ch]; + + for (l = 0; l < sbr._bs_num_rel_1[ch]; l++) + { + if (border < sbr._bs_rel_bord_1[ch, l]) + return 1; + + border -= sbr._bs_rel_bord_1[ch, l]; + t_E_temp[--i] = sbr._rate * border; + } + } + break; + } + + /* no error occured, we can safely use this t_E vector */ + for (l = 0; l < 6; l++) + { + sbr._t_E[ch, l] = t_E_temp[l]; + } + + return 0; + } + + public static void NoiseFloorTimeBorderVector(SBR sbr, int ch) + { + sbr._t_Q[ch, 0] = sbr._t_E[ch, 0]; + + if (sbr._L_E[ch] == 1) + { + sbr._t_Q[ch, 1] = sbr._t_E[ch, 1]; + sbr._t_Q[ch, 2] = 0; + } + else + { + int index = MiddleBorder(sbr, ch); + sbr._t_Q[ch, 1] = sbr._t_E[ch, index]; + sbr._t_Q[ch, 2] = sbr._t_E[ch, sbr._L_E[ch]]; + } + } + + private static int MiddleBorder(SBR sbr, int ch) + { + int retval = 0; + + switch (sbr._bs_frame_class[ch]) + { + case Constants.FIXFIX: + retval = sbr._L_E[ch] / 2; + break; + case Constants.VARFIX: + if (sbr._bs_pointer[ch] == 0) + retval = 1; + else if (sbr._bs_pointer[ch] == 1) + retval = sbr._L_E[ch] - 1; + else + retval = sbr._bs_pointer[ch] - 1; + break; + case Constants.FIXVAR: + case Constants.VARVAR: + if (sbr._bs_pointer[ch] > 1) + retval = sbr._L_E[ch] + 1 - sbr._bs_pointer[ch]; + else + retval = sbr._L_E[ch] - 1; + break; + } + + return retval > 0 ? retval : 0; + } + } +} diff --git a/SharpJaad.AAC/Syntax/BitStream.cs b/SharpJaad.AAC/Syntax/BitStream.cs new file mode 100644 index 0000000..8968129 --- /dev/null +++ b/SharpJaad.AAC/Syntax/BitStream.cs @@ -0,0 +1,227 @@ +using System; +using SharpJaad.AAC; + +namespace SharpJaad.AAC.Syntax +{ + public class BitStream + { + private const int WORD_BITS = 32; + private const int WORD_BYTES = 4; + private const int BYTE_MASK = 0xff; + private byte[] _buffer; + private int _pos; //offset in the buffer array + private int _cache; //current 4 bytes, that are read from the buffer + protected int _bitsCached; //remaining bits in current cache + protected int _position; //number of total bits read + + public BitStream() + { } + + public BitStream(byte[] data) + { + SetData(data); + } + + public void Destroy() + { + Reset(); + _buffer = null; + } + + public void SetData(byte[] data) + { + Reset(); + + int size = data.Length; + + // reduce the buffer size to an integer number of words + int shift = size % WORD_BYTES; + + // push leading bytes to cache + _bitsCached = 8 * shift; + + for (int i = 0; i < shift; ++i) + { + byte c = data[i]; + _cache <<= 8; + _cache |= 0xff & c; + } + + size -= shift; + + //only reallocate if needed + if (_buffer == null || _buffer.Length != size) + _buffer = new byte[size]; + + Buffer.BlockCopy(data, shift, _buffer, 0, _buffer.Length); + } + + public void ByteAlign() + { + int toFlush = _bitsCached & 7; + if (toFlush > 0) SkipBits(toFlush); + } + + public void Reset() + { + _pos = 0; + _bitsCached = 0; + _cache = 0; + _position = 0; + } + + public int GetPosition() + { + return _position; + } + + public int GetBitsLeft() + { + return 8 * (_buffer.Length - _pos) + _bitsCached; + } + + /** + * Reads the next four bytes. + * @param peek if true, the stream pointer will not be increased + */ + protected int ReadCache(bool peek) + { + int i; + if (_pos > _buffer.Length - WORD_BYTES) throw new AACException("end of stream", true); + else i = (_buffer[_pos] & BYTE_MASK) << 24 + | (_buffer[_pos + 1] & BYTE_MASK) << 16 + | (_buffer[_pos + 2] & BYTE_MASK) << 8 + | _buffer[_pos + 3] & BYTE_MASK; + if (!peek) _pos += WORD_BYTES; + return i; + } + + public int ReadBits(int n) + { + int result; + if (_bitsCached >= n) + { + _bitsCached -= n; + result = _cache >> _bitsCached & MaskBits(n); + _position += n; + } + else + { + _position += n; + int c = _cache & MaskBits(_bitsCached); + int left = n - _bitsCached; + _cache = ReadCache(false); + _bitsCached = WORD_BITS - left; + result = _cache >> _bitsCached & MaskBits(left) | c << left; + } + return result; + } + + public int ReadBit() + { + int i; + if (_bitsCached > 0) + { + _bitsCached--; + i = _cache >> _bitsCached & 1; + _position++; + } + else + { + _cache = ReadCache(false); + _bitsCached = WORD_BITS - 1; + _position++; + i = _cache >> _bitsCached & 1; + } + return i; + } + + public bool ReadBool() + { + return (ReadBit() & 0x1) != 0; + } + + public int PeekBits(int n) + { + int ret; + if (_bitsCached >= n) + { + ret = _cache >> _bitsCached - n & MaskBits(n); + } + else + { + //old cache + int c = _cache & MaskBits(_bitsCached); + n -= _bitsCached; + //read next & combine + ret = ReadCache(true) >> WORD_BITS - n & MaskBits(n) | c << n; + } + return ret; + } + + public int PeekBit() + { + int ret; + if (_bitsCached > 0) + { + ret = _cache >> _bitsCached - 1 & 1; + } + else + { + int word = ReadCache(true); + ret = word >> WORD_BITS - 1 & 1; + } + return ret; + } + + public void SkipBits(int n) + { + _position += n; + if (n <= _bitsCached) + { + _bitsCached -= n; + } + else + { + n -= _bitsCached; + while (n >= WORD_BITS) + { + n -= WORD_BITS; + ReadCache(false); + } + if (n > 0) + { + _cache = ReadCache(false); + _bitsCached = WORD_BITS - n; + } + else + { + _cache = 0; + _bitsCached = 0; + } + } + } + + public void SkipBit() + { + _position++; + if (_bitsCached > 0) + { + _bitsCached--; + } + else + { + _cache = ReadCache(false); + _bitsCached = WORD_BITS - 1; + } + } + + public int MaskBits(int n) + { + int i; + if (n == 32) i = -1; + else i = (1 << n) - 1; + return i; + } + } +} diff --git a/SharpJaad.AAC/Syntax/CCE.cs b/SharpJaad.AAC/Syntax/CCE.cs new file mode 100644 index 0000000..26f1c2c --- /dev/null +++ b/SharpJaad.AAC/Syntax/CCE.cs @@ -0,0 +1,191 @@ +using SharpJaad.AAC.Huffman; +using System; + +namespace SharpJaad.AAC.Syntax +{ + public class CCE : Element + { + public const int BEFORE_TNS = 0; + public const int AFTER_TNS = 1; + public const int AFTER_IMDCT = 2; + private static readonly float[] CCE_SCALE = + { + 1.09050773266525765921f, + 1.18920711500272106672f, + 1.4142135623730950488016887f, + 2f + }; + private readonly ICStream _ics; + //private float[] iqData; + private int _couplingPoint; + private int _coupledCount; + private readonly bool[] _channelPair; + private readonly int[] _idSelect; + private readonly int[] _chSelect; + /*[0] shared list of gains; [1] list of gains for right channel; + *[2] list of gains for left channel; [3] lists of gains for both channels + */ + private readonly float[,] _gain; + + public CCE(DecoderConfig config) + { + _ics = new ICStream(config); + _channelPair = new bool[8]; + _idSelect = new int[8]; + _chSelect = new int[8]; + _gain = new float[16, 120]; + } + + public int GetCouplingPoint() + { + return _couplingPoint; + } + + public int GetCoupledCount() + { + return _coupledCount; + } + + public bool IsChannelPair(int index) + { + return _channelPair[index]; + } + + public int GetIDSelect(int index) + { + return _idSelect[index]; + } + + public int GetCHSelect(int index) + { + return _chSelect[index]; + } + + public void Decode(BitStream input, DecoderConfig conf) + { + ReadElementInstanceTag(input); + _couplingPoint = 2 * input.ReadBit(); + _coupledCount = input.ReadBits(3); + int gainCount = 0; + int i; + for (i = 0; i <= _coupledCount; i++) + { + gainCount++; + _channelPair[i] = input.ReadBool(); + _idSelect[i] = input.ReadBits(4); + if (_channelPair[i]) + { + _chSelect[i] = input.ReadBits(2); + if (_chSelect[i] == 3) gainCount++; + } + else _chSelect[i] = 2; + } + _couplingPoint += input.ReadBit(); + _couplingPoint |= _couplingPoint >> 1; + + bool sign = input.ReadBool(); + double scale = CCE_SCALE[input.ReadBits(2)]; + + _ics.Decode(input, false, conf); + ICSInfo info = _ics.GetInfo(); + int windowGroupCount = info.GetWindowGroupCount(); + int maxSFB = info.GetMaxSFB(); + + int[] sfbCB = _ics.getSfbCB(); + for (i = 0; i < gainCount; i++) + { + int idx = 0; + int cge = 1; + int xg = 0; + float gainCache = 1.0f; + if (i > 0) + { + cge = _couplingPoint == 2 ? 1 : input.ReadBit(); + xg = cge == 0 ? 0 : HuffmanDec.DecodeScaleFactor(input) - 60; + gainCache = (float)Math.Pow(scale, -xg); + } + if (_couplingPoint == 2) _gain[i, 0] = gainCache; + else + { + int sfb; + for (int g = 0; g < windowGroupCount; g++) + { + for (sfb = 0; sfb < maxSFB; sfb++, idx++) + { + if (sfbCB[idx] != HCB.ZERO_HCB) + { + if (cge == 0) + { + int t = HuffmanDec.DecodeScaleFactor(input) - 60; + if (t != 0) + { + int s = 1; + t = xg += t; + if (!sign) + { + s -= 2 * (t & 0x1); + t >>= 1; + } + gainCache = (float)(Math.Pow(scale, -t) * s); + } + } + _gain[i, idx] = gainCache; + } + } + } + } + } + } + + public void Process() + { + //iqData = ics.getInvQuantData(); + } + + public void ApplyIndependentCoupling(int index, float[] data) + { + double g = _gain[index, 0]; + float[] iqData = _ics.GetInvQuantData(); + for (int i = 0; i < data.Length; i++) + { + data[i] += (float)(g * iqData[i]); + } + } + + public void ApplyDependentCoupling(int index, float[] data) + { + ICSInfo info = _ics.GetInfo(); + int[] swbOffsets = info.GetSWBOffsets(); + int windowGroupCount = info.GetWindowGroupCount(); + int maxSFB = info.GetMaxSFB(); + int[] sfbCB = _ics.getSfbCB(); + float[] iqData = _ics.GetInvQuantData(); + + int srcOff = 0; + int dstOff = 0; + + int len, sfb, group, k, idx = 0; + float x; + for (int g = 0; g < windowGroupCount; g++) + { + len = info.GetWindowGroupLength(g); + for (sfb = 0; sfb < maxSFB; sfb++, idx++) + { + if (sfbCB[idx] != HCB.ZERO_HCB) + { + x = _gain[index, idx]; + for (group = 0; group < len; group++) + { + for (k = swbOffsets[sfb]; k < swbOffsets[sfb + 1]; k++) + { + data[dstOff + group * 128 + k] += x * iqData[srcOff + group * 128 + k]; + } + } + } + } + dstOff += len * 128; + srcOff += len * 128; + } + } + } +} diff --git a/SharpJaad.AAC/Syntax/CPE.cs b/SharpJaad.AAC/Syntax/CPE.cs new file mode 100644 index 0000000..4f638c0 --- /dev/null +++ b/SharpJaad.AAC/Syntax/CPE.cs @@ -0,0 +1,95 @@ +using SharpJaad.AAC.Tools; + +namespace SharpJaad.AAC.Syntax +{ + public class CPE : Element + { + private MSMask _msMask; + private bool[] _msUsed; + private bool _commonWindow; + ICStream _icsL, _icsR; + + public CPE(DecoderConfig config) + { + _msUsed = new bool[Constants.MAX_MS_MASK]; + _icsL = new ICStream(config); + _icsR = new ICStream(config); + } + + public void Decode(BitStream input, DecoderConfig conf) + { + Profile profile = conf.GetProfile(); + SampleFrequency sf = conf.GetSampleFrequency(); + if (sf.Equals(SampleFrequency.SAMPLE_FREQUENCY_NONE)) throw new AACException("invalid sample frequency"); + + ReadElementInstanceTag(input); + + _commonWindow = input.ReadBool(); + ICSInfo info = _icsL.GetInfo(); + if (_commonWindow) + { + info.Decode(input, conf, _commonWindow); + _icsR.GetInfo().SetData(input, conf, info); + + _msMask = (MSMask)input.ReadBits(2); + if (_msMask.Equals(MSMask.TYPE_USED)) + { + int maxSFB = info.GetMaxSFB(); + int windowGroupCount = info.GetWindowGroupCount(); + + for (int idx = 0; idx < windowGroupCount * maxSFB; idx++) + { + _msUsed[idx] = input.ReadBool(); + } + } + else if (_msMask.Equals(MSMask.TYPE_ALL_1)) Arrays.Fill(_msUsed, true); + else if (_msMask.Equals(MSMask.TYPE_ALL_0)) Arrays.Fill(_msUsed, false); + else throw new AACException("reserved MS mask type used"); + } + else + { + _msMask = MSMask.TYPE_ALL_0; + Arrays.Fill(_msUsed, false); + } + + if (profile.IsErrorResilientProfile()) + { + LTPrediction ltp = _icsR.GetInfo().GetLTPrediction(); + if (ltp != null) ltp.Decode(input, info, profile); + } + + _icsL.Decode(input, _commonWindow, conf); + _icsR.Decode(input, _commonWindow, conf); + } + + public ICStream GetLeftChannel() + { + return _icsL; + } + + public ICStream GetRightChannel() + { + return _icsR; + } + + public MSMask GetMSMask() + { + return _msMask; + } + + public bool IsMSUsed(int off) + { + return _msUsed[off]; + } + + public bool IsMSMaskPresent() + { + return !_msMask.Equals(MSMask.TYPE_ALL_0); + } + + public bool IsCommonWindow() + { + return _commonWindow; + } + } +} diff --git a/SharpJaad.AAC/Syntax/Constants.cs b/SharpJaad.AAC/Syntax/Constants.cs new file mode 100644 index 0000000..c2929b0 --- /dev/null +++ b/SharpJaad.AAC/Syntax/Constants.cs @@ -0,0 +1,30 @@ +namespace SharpJaad.AAC.Syntax +{ + public class Constants + { + public const int MAX_ELEMENTS = 16; + public const int BYTE_MASK = 0xFF; + public const int MIN_INPUT_SIZE = 768; //6144 bits/channel + //frame length + public const int WINDOW_LEN_LONG = 1024; + public const int WINDOW_LEN_SHORT = WINDOW_LEN_LONG / 8; + public const int WINDOW_SMALL_LEN_LONG = 960; + public const int WINDOW_SMALL_LEN_SHORT = WINDOW_SMALL_LEN_LONG / 8; + //element types + public const int ELEMENT_SCE = 0; + public const int ELEMENT_CPE = 1; + public const int ELEMENT_CCE = 2; + public const int ELEMENT_LFE = 3; + public const int ELEMENT_DSE = 4; + public const int ELEMENT_PCE = 5; + public const int ELEMENT_FIL = 6; + public const int ELEMENT_END = 7; + //maximum numbers + public const int MAX_WINDOW_COUNT = 8; + public const int MAX_WINDOW_GROUP_COUNT = MAX_WINDOW_COUNT; + public const int MAX_LTP_SFB = 40; + public const int MAX_SECTIONS = 120; + public const int MAX_MS_MASK = 128; + public const float SQRT2 = 1.414213562f; + } +} diff --git a/SharpJaad.AAC/Syntax/DSE.cs b/SharpJaad.AAC/Syntax/DSE.cs new file mode 100644 index 0000000..60ae1c9 --- /dev/null +++ b/SharpJaad.AAC/Syntax/DSE.cs @@ -0,0 +1,24 @@ +namespace SharpJaad.AAC.Syntax +{ + public class DSE : Element + { + private byte[] _dataStreamBytes; + + public void Decode(BitStream input) + { + ReadElementInstanceTag(input); + + bool byteAlign = input.ReadBool(); + int count = input.ReadBits(8); + if (count == 255) count += input.ReadBits(8); + + if (byteAlign) input.ByteAlign(); + + _dataStreamBytes = new byte[count]; + for (int i = 0; i < count; i++) + { + _dataStreamBytes[i] = (byte)input.ReadBits(8); + } + } + } +} diff --git a/SharpJaad.AAC/Syntax/Element.cs b/SharpJaad.AAC/Syntax/Element.cs new file mode 100644 index 0000000..ce30ecb --- /dev/null +++ b/SharpJaad.AAC/Syntax/Element.cs @@ -0,0 +1,43 @@ +using SharpJaad.AAC.Sbr; + +namespace SharpJaad.AAC.Syntax +{ + public abstract class Element + { + private int _elementInstanceTag; + private SBR _sbr; + + protected void ReadElementInstanceTag(BitStream input) + { + _elementInstanceTag = input.ReadBits(4); + } + + public int GetElementInstanceTag() + { + return _elementInstanceTag; + } + + public void DecodeSBR(BitStream input, SampleFrequency sf, int count, bool stereo, bool crc, bool downSampled, bool smallFrames) + { + if (_sbr == null) + { + /* implicit SBR signalling, see 4.6.18.2.6 */ + int fq = sf.GetFrequency(); + if (fq < 24000 && !downSampled) + sf = SampleFrequencyExtensions.FromFrequency(2 * fq); + _sbr = new SBR(smallFrames, stereo, sf, downSampled); + } + _sbr.Decode(input, count, crc); + } + + public bool IsSBRPresent() + { + return _sbr != null; + } + + public SBR GetSBR() + { + return _sbr; + } + } +} diff --git a/SharpJaad.AAC/Syntax/FIL.cs b/SharpJaad.AAC/Syntax/FIL.cs new file mode 100644 index 0000000..428c615 --- /dev/null +++ b/SharpJaad.AAC/Syntax/FIL.cs @@ -0,0 +1,173 @@ +namespace SharpJaad.AAC.Syntax +{ + public class FIL + { + public class DynamicRangeInfo + { + public const int MAX_NBR_BANDS = 7; + public bool[] _excludeMask; + public bool[] _additionalExcludedChannels; + public bool _pceTagPresent; + public int _pceInstanceTag; + public int _tagReservedBits; + public bool _excludedChannelsPresent; + public bool _bandsPresent; + public int _bandsIncrement, _interpolationScheme; + public int[] _bandTop; + public bool _progRefLevelPresent; + public int _progRefLevel, _progRefLevelReservedBits; + public bool[] _dynRngSgn; + public int[] _dynRngCtl; + + public DynamicRangeInfo() + { + _excludeMask = new bool[MAX_NBR_BANDS]; + _additionalExcludedChannels = new bool[MAX_NBR_BANDS]; + } + } + + private const int TYPE_FILL = 0; + private const int TYPE_FILL_DATA = 1; + private const int TYPE_EXT_DATA_ELEMENT = 2; + private const int TYPE_DYNAMIC_RANGE = 11; + private const int TYPE_SBR_DATA = 13; + private const int TYPE_SBR_DATA_CRC = 14; + private bool _downSampledSBR; + private DynamicRangeInfo _dri; + + public FIL(bool downSampledSBR) + { + _downSampledSBR = downSampledSBR; + } + + public void Decode(BitStream input, Element prev, SampleFrequency sf, bool sbrEnabled, bool smallFrames) + { + int count = input.ReadBits(4); + if (count == 15) count += input.ReadBits(8) - 1; + count *= 8; //convert to bits + + int cpy = count; + int pos = input.GetPosition(); + + while (count > 0) + { + count = DecodeExtensionPayload(input, count, prev, sf, sbrEnabled, smallFrames); + } + + int pos2 = input.GetPosition() - pos; + int bitsLeft = cpy - pos2; + if (bitsLeft > 0) input.SkipBits(pos2); + else if (bitsLeft < 0) throw new AACException("FIL element overread: " + bitsLeft); + } + + private int DecodeExtensionPayload(BitStream input, int count, Element prev, SampleFrequency sf, bool sbrEnabled, bool smallFrames) + { + int type = input.ReadBits(4); + int ret = count - 4; + switch (type) + { + case TYPE_DYNAMIC_RANGE: + ret = DecodeDynamicRangeInfo(input, ret); + break; + case TYPE_SBR_DATA: + case TYPE_SBR_DATA_CRC: + if (sbrEnabled) + { + if (prev is SCE_LFE || prev is CPE || prev is CCE) + { + prev.DecodeSBR(input, sf, ret, prev is CPE, type == TYPE_SBR_DATA_CRC, _downSampledSBR, smallFrames); + ret = 0; + break; + } + else throw new AACException("SBR applied on unexpected element: " + prev); + } + else + { + input.SkipBits(ret); + ret = 0; + } + break; + case TYPE_FILL: + case TYPE_FILL_DATA: + case TYPE_EXT_DATA_ELEMENT: + default: + input.SkipBits(ret); + ret = 0; + break; + } + return ret; + } + + private int DecodeDynamicRangeInfo(BitStream input, int count) + { + if (_dri == null) _dri = new DynamicRangeInfo(); + int ret = count; + + int bandCount = 1; + + //pce tag + if (_dri._pceTagPresent = input.ReadBool()) + { + _dri._pceInstanceTag = input.ReadBits(4); + _dri._tagReservedBits = input.ReadBits(4); + } + + //excluded channels + if (_dri._excludedChannelsPresent = input.ReadBool()) + { + ret -= DecodeExcludedChannels(input); + } + + //bands + if (_dri._bandsPresent = input.ReadBool()) + { + _dri._bandsIncrement = input.ReadBits(4); + _dri._interpolationScheme = input.ReadBits(4); + ret -= 8; + bandCount += _dri._bandsIncrement; + _dri._bandTop = new int[bandCount]; + for (int i = 0; i < bandCount; i++) + { + _dri._bandTop[i] = input.ReadBits(8); + ret -= 8; + } + } + + //prog ref level + if (_dri._progRefLevelPresent = input.ReadBool()) + { + _dri._progRefLevel = input.ReadBits(7); + _dri._progRefLevelReservedBits = input.ReadBits(1); + ret -= 8; + } + + _dri._dynRngSgn = new bool[bandCount]; + _dri._dynRngCtl = new int[bandCount]; + for (int i = 0; i < bandCount; i++) + { + _dri._dynRngSgn[i] = input.ReadBool(); + _dri._dynRngCtl[i] = input.ReadBits(7); + ret -= 8; + } + return ret; + } + + private int DecodeExcludedChannels(BitStream input) + { + int i; + int exclChs = 0; + + do + { + for (i = 0; i < 7; i++) + { + _dri._excludeMask[exclChs] = input.ReadBool(); + exclChs++; + } + } + while (exclChs < 57 && input.ReadBool()); + + return exclChs / 7 * 8; + } + } +} diff --git a/SharpJaad.AAC/Syntax/ICSInfo.cs b/SharpJaad.AAC/Syntax/ICSInfo.cs new file mode 100644 index 0000000..180abf6 --- /dev/null +++ b/SharpJaad.AAC/Syntax/ICSInfo.cs @@ -0,0 +1,206 @@ +using SharpJaad.AAC.Tools; +using System.Linq; + +namespace SharpJaad.AAC.Syntax +{ + public class ICSInfo + { + public const int WINDOW_SHAPE_SINE = 0; + public const int WINDOW_SHAPE_KAISER = 1; + public const int PREVIOUS = 0; + public const int CURRENT = 1; + + public enum WindowSequence + { + ONLY_LONG_SEQUENCE = 0, + LONG_START_SEQUENCE = 1, + EIGHT_SHORT_SEQUENCE = 2, + LONG_STOP_SEQUENCE = 3 + } + + private int _frameLength; + private WindowSequence _windowSequence; + private int[] _windowShape; + private int _maxSFB; + //prediction + private bool _predictionDataPresent; + private ICPrediction _icPredict; + private LTPrediction _ltPredict; + //windows/sfbs + private int _windowCount; + private int _windowGroupCount; + private int[] _windowGroupLength; + private int _swbCount; + private int[] _swbOffsets; + + public ICSInfo(DecoderConfig config) + { + _frameLength = config.GetFrameLength(); + _windowShape = new int[2]; + _windowSequence = WindowSequence.ONLY_LONG_SEQUENCE; + _windowGroupLength = new int[Constants.MAX_WINDOW_GROUP_COUNT]; + + if (LTPrediction.IsLTPProfile(config.GetProfile())) + _ltPredict = new LTPrediction(_frameLength); + else + _ltPredict = null; + } + + /* ========== decoding ========== */ + public void Decode(BitStream input, DecoderConfig conf, bool commonWindow) + { + SampleFrequency sf = conf.GetSampleFrequency(); + if (sf.Equals(SampleFrequency.SAMPLE_FREQUENCY_NONE)) throw new AACException("invalid sample frequency"); + + input.SkipBit(); //reserved + _windowSequence = (WindowSequence)input.ReadBits(2); + _windowShape[PREVIOUS] = _windowShape[CURRENT]; + _windowShape[CURRENT] = input.ReadBit(); + + _windowGroupCount = 1; + _windowGroupLength[0] = 1; + + if (_windowSequence.Equals(WindowSequence.EIGHT_SHORT_SEQUENCE)) + { + _maxSFB = input.ReadBits(4); + int i; + for (i = 0; i < 7; i++) + { + if (input.ReadBool()) _windowGroupLength[_windowGroupCount - 1]++; + else + { + _windowGroupCount++; + _windowGroupLength[_windowGroupCount - 1] = 1; + } + } + _windowCount = 8; + _swbOffsets = ScaleFactorBands.SWB_OFFSET_SHORT_WINDOW[(int)sf]; + _swbCount = ScaleFactorBands.SWB_SHORT_WINDOW_COUNT[(int)sf]; + } + else + { + _maxSFB = input.ReadBits(6); + _windowCount = 1; + _swbOffsets = ScaleFactorBands.SWB_OFFSET_LONG_WINDOW[(int)sf]; + _swbCount = ScaleFactorBands.SWB_LONG_WINDOW_COUNT[(int)sf]; + _predictionDataPresent = input.ReadBool(); + if (_predictionDataPresent) ReadPredictionData(input, conf.GetProfile(), sf, commonWindow); + } + } + + private void ReadPredictionData(BitStream input, Profile profile, SampleFrequency sf, bool commonWindow) + { + switch (profile) + { + case Profile.AAC_MAIN: + if (_icPredict == null) _icPredict = new ICPrediction(); + _icPredict.Decode(input, _maxSFB, sf); + break; + case Profile.AAC_LTP: + _ltPredict.Decode(input, this, profile); + break; + case Profile.ER_AAC_LTP: + if (!commonWindow) + { + _ltPredict.Decode(input, this, profile); + } + break; + default: + throw new AACException("unexpected profile for LTP: " + profile); + } + } + + /* =========== gets ============ */ + public int GetMaxSFB() + { + return _maxSFB; + } + + public int GetSWBCount() + { + return _swbCount; + } + + public int[] GetSWBOffsets() + { + return _swbOffsets; + } + + public int GetSWBOffsetMax() + { + return _swbOffsets[_swbCount]; + } + + public int GetWindowCount() + { + return _windowCount; + } + + public int GetWindowGroupCount() + { + return _windowGroupCount; + } + + public int GetWindowGroupLength(int g) + { + return _windowGroupLength[g]; + } + + public WindowSequence GetWindowSequence() + { + return _windowSequence; + } + + public bool IsEightShortFrame() + { + return _windowSequence.Equals(WindowSequence.EIGHT_SHORT_SEQUENCE); + } + + public int GetWindowShape(int index) + { + return _windowShape[index]; + } + + public bool IsICPredictionPresent() + { + return _predictionDataPresent; + } + + public ICPrediction GetICPrediction() + { + return _icPredict; + } + + public LTPrediction GetLTPrediction() + { + return _ltPredict; + } + + public void UnsetPredictionSFB(int sfb) + { + if (_predictionDataPresent) _icPredict.SetPredictionUnused(sfb); + if (_ltPredict != null) _ltPredict.SetPredictionUnused(sfb); + } + + public void SetData(BitStream input, DecoderConfig conf, ICSInfo info) + { + _windowSequence = info._windowSequence; + _windowShape[PREVIOUS] = _windowShape[CURRENT]; + _windowShape[CURRENT] = info._windowShape[CURRENT]; + _maxSFB = info._maxSFB; + _predictionDataPresent = info._predictionDataPresent; + if (_predictionDataPresent) _icPredict = info._icPredict; + + _windowCount = info._windowCount; + _windowGroupCount = info._windowGroupCount; + _windowGroupLength = info._windowGroupLength.ToArray(); + _swbCount = info._swbCount; + _swbOffsets = info._swbOffsets.ToArray(); + + if (_predictionDataPresent) + { + _ltPredict.Decode(input, this, conf.GetProfile()); + } + } + } +} diff --git a/SharpJaad.AAC/Syntax/ICStream.cs b/SharpJaad.AAC/Syntax/ICStream.cs new file mode 100644 index 0000000..cf0ab6a --- /dev/null +++ b/SharpJaad.AAC/Syntax/ICStream.cs @@ -0,0 +1,359 @@ +using SharpJaad.AAC.Error; +using SharpJaad.AAC.Gain; +using SharpJaad.AAC.Huffman; +using SharpJaad.AAC.Tools; +using System; + +namespace SharpJaad.AAC.Syntax +{ + public class ICStream + { + private const int SF_DELTA = 60; + private const int SF_OFFSET = 200; + private static int randomState = 0x1F2E3D4C; + private int _frameLength; + //always needed + private ICSInfo _info; + private int[] _sfbCB; + private int[] _sectEnd; + private float[] _data; + private float[] _scaleFactors; + private int _globalGain; + private bool _pulseDataPresent, _tnsDataPresent, _gainControlPresent; + //only allocated if needed + private TNS _tns; + private GainControl _gainControl; + private int[] _pulseOffset, _pulseAmp; + private int _pulseCount; + private int _pulseStartSWB; + //error resilience +#pragma warning disable CS0649 // Field 'ICStream._noiseUsed' is never assigned to, and will always have its default value false + private bool _noiseUsed; +#pragma warning restore CS0649 // Field 'ICStream._noiseUsed' is never assigned to, and will always have its default value false + private int _reorderedSpectralDataLen, _longestCodewordLen; + private RVLC _rvlc; + + public ICStream(DecoderConfig config) + { + _frameLength = config.GetFrameLength(); + _info = new ICSInfo(config); + _sfbCB = new int[Constants.MAX_SECTIONS]; + _sectEnd = new int[Constants.MAX_SECTIONS]; + _data = new float[_frameLength]; + _scaleFactors = new float[Constants.MAX_SECTIONS]; + } + + /* ========= decoding ========== */ + public void Decode(BitStream input, bool commonWindow, DecoderConfig conf) + { + if (conf.IsScalefactorResilienceUsed() && _rvlc == null) _rvlc = new RVLC(); + bool er = conf.GetProfile().IsErrorResilientProfile(); + + _globalGain = input.ReadBits(8); + + if (!commonWindow) _info.Decode(input, conf, commonWindow); + + DecodeSectionData(input, conf.IsSectionDataResilienceUsed()); + + //if(conf.isScalefactorResilienceUsed()) rvlc.decode(in, this, scaleFactors); + /*else*/ + DecodeScaleFactors(input); + + _pulseDataPresent = input.ReadBool(); + if (_pulseDataPresent) + { + if (_info.IsEightShortFrame()) throw new AACException("pulse data not allowed for short frames"); + //LOGGER.log(Level.FINE, "PULSE"); + DecodePulseData(input); + } + + _tnsDataPresent = input.ReadBool(); + if (_tnsDataPresent && !er) + { + if (_tns == null) _tns = new TNS(); + _tns.Decode(input, _info); + } + + _gainControlPresent = input.ReadBool(); + if (_gainControlPresent) + { + if (_gainControl == null) _gainControl = new GainControl(_frameLength); + //LOGGER.log(Level.FINE, "GAIN"); + _gainControl.Decode(input, _info.GetWindowSequence()); + } + + //RVLC spectral data + //if(conf.isScalefactorResilienceUsed()) rvlc.decodeScalefactors(this, in, scaleFactors); + + if (conf.IsSpectralDataResilienceUsed()) + { + int max = conf.GetChannelConfiguration() == ChannelConfiguration.CHANNEL_CONFIG_STEREO ? 6144 : 12288; + _reorderedSpectralDataLen = Math.Max(input.ReadBits(14), max); + _longestCodewordLen = Math.Max(input.ReadBits(6), 49); + //HCR.decodeReorderedSpectralData(this, in, data, conf.isSectionDataResilienceUsed()); + } + else DecodeSpectralData(input); + } + + public void DecodeSectionData(BitStream input, bool sectionDataResilienceUsed) + { + Arrays.Fill(_sfbCB, 0); + Arrays.Fill(_sectEnd, 0); + int bits = _info.IsEightShortFrame() ? 3 : 5; + int escVal = (1 << bits) - 1; + + int windowGroupCount = _info.GetWindowGroupCount(); + int maxSFB = _info.GetMaxSFB(); + + int end, cb, incr; + int idx = 0; + + for (int g = 0; g < windowGroupCount; g++) + { + int k = 0; + while (k < maxSFB) + { + end = k; + cb = input.ReadBits(4); + if (cb == 12) throw new AACException("invalid huffman codebook: 12"); + while ((incr = input.ReadBits(bits)) == escVal) + { + end += incr; + } + end += incr; + if (end > maxSFB) throw new AACException("too many bands: " + end + ", allowed: " + maxSFB); + for (; k < end; k++) + { + _sfbCB[idx] = cb; + _sectEnd[idx++] = end; + } + } + } + } + + private void DecodePulseData(BitStream input) + { + _pulseCount = input.ReadBits(2) + 1; + _pulseStartSWB = input.ReadBits(6); + if (_pulseStartSWB >= _info.GetSWBCount()) throw new AACException("pulse SWB out of range: " + _pulseStartSWB + " > " + _info.GetSWBCount()); + + if (_pulseOffset == null || _pulseCount != _pulseOffset.Length) + { + //only reallocate if needed + _pulseOffset = new int[_pulseCount]; + _pulseAmp = new int[_pulseCount]; + } + + _pulseOffset[0] = _info.GetSWBOffsets()[_pulseStartSWB]; + _pulseOffset[0] += input.ReadBits(5); + _pulseAmp[0] = input.ReadBits(4); + for (int i = 1; i < _pulseCount; i++) + { + _pulseOffset[i] = input.ReadBits(5) + _pulseOffset[i - 1]; + if (_pulseOffset[i] > 1023) throw new AACException("pulse offset out of range: " + _pulseOffset[0]); + _pulseAmp[i] = input.ReadBits(4); + } + } + + public void DecodeScaleFactors(BitStream input) + { + int windowGroups = _info.GetWindowGroupCount(); + int maxSFB = _info.GetMaxSFB(); + //0: spectrum, 1: noise, 2: intensity + int[] offset = { _globalGain, _globalGain - 90, 0 }; + + int tmp; + bool noiseFlag = true; + + int sfb, idx = 0; + for (int g = 0; g < windowGroups; g++) + { + for (sfb = 0; sfb < maxSFB;) + { + int end = _sectEnd[idx]; + switch (_sfbCB[idx]) + { + case HCB.ZERO_HCB: + for (; sfb < end; sfb++, idx++) + { + _scaleFactors[idx] = 0; + } + break; + case HCB.INTENSITY_HCB: + case HCB.INTENSITY_HCB2: + for (; sfb < end; sfb++, idx++) + { + offset[2] += HuffmanDec.DecodeScaleFactor(input) - SF_DELTA; + tmp = Math.Min(Math.Max(offset[2], -155), 100); + _scaleFactors[idx] = ScaleFactorTable.SCALEFACTOR_TABLE[-tmp + SF_OFFSET]; + } + break; + case HCB.NOISE_HCB: + for (; sfb < end; sfb++, idx++) + { + if (noiseFlag) + { + offset[1] += input.ReadBits(9) - 256; + noiseFlag = false; + } + else offset[1] += HuffmanDec.DecodeScaleFactor(input) - SF_DELTA; + tmp = Math.Min(Math.Max(offset[1], -100), 155); + _scaleFactors[idx] = -ScaleFactorTable.SCALEFACTOR_TABLE[tmp + SF_OFFSET]; + } + break; + default: + for (; sfb < end; sfb++, idx++) + { + offset[0] += HuffmanDec.DecodeScaleFactor(input) - SF_DELTA; + if (offset[0] > 255) throw new AACException("scalefactor out of range: " + offset[0]); + _scaleFactors[idx] = ScaleFactorTable.SCALEFACTOR_TABLE[offset[0] - 100 + SF_OFFSET]; + } + break; + } + } + } + } + + private void DecodeSpectralData(BitStream input) + { + Arrays.Fill(_data, 0); + int maxSFB = _info.GetMaxSFB(); + int windowGroups = _info.GetWindowGroupCount(); + int[] offsets = _info.GetSWBOffsets(); + int[] buf = new int[4]; + + int sfb, j, k, w, hcb, off, width, num; + int groupOff = 0, idx = 0; + for (int g = 0; g < windowGroups; g++) + { + int groupLen = _info.GetWindowGroupLength(g); + + for (sfb = 0; sfb < maxSFB; sfb++, idx++) + { + hcb = _sfbCB[idx]; + off = groupOff + offsets[sfb]; + width = offsets[sfb + 1] - offsets[sfb]; + if (hcb == HCB.ZERO_HCB || hcb == HCB.INTENSITY_HCB || hcb == HCB.INTENSITY_HCB2) + { + for (w = 0; w < groupLen; w++, off += 128) + { + Arrays.Fill(_data, off, off + width, 0); + } + } + else if (hcb == HCB.NOISE_HCB) + { + //apply PNS: fill with random values + for (w = 0; w < groupLen; w++, off += 128) + { + float energy = 0; + + for (k = 0; k < width; k++) + { + randomState = 1664525 * randomState + 1013904223; + _data[off + k] = randomState; + energy += _data[off + k] * _data[off + k]; + } + + float scale = (float)(_scaleFactors[idx] / Math.Sqrt(energy)); + for (k = 0; k < width; k++) + { + _data[off + k] *= scale; + } + } + } + else + { + for (w = 0; w < groupLen; w++, off += 128) + { + num = hcb >= HCB.FIRST_PAIR_HCB ? 2 : 4; + for (k = 0; k < width; k += num) + { + HuffmanDec.DecodeSpectralData(input, hcb, buf, 0); + + //inverse quantization & scaling + for (j = 0; j < num; j++) + { + _data[off + k + j] = buf[j] > 0 ? IQTable.IQ_TABLE[buf[j]] : -IQTable.IQ_TABLE[-buf[j]]; + _data[off + k + j] *= _scaleFactors[idx]; + } + } + } + } + } + groupOff += groupLen << 7; + } + } + + /* =========== gets ============ */ + /** + * Does inverse quantization and applies the scale factors on the decoded + * data. After this the noiseless decoding is finished and the decoded data + * is returned. + * @return the inverse quantized and scaled data + */ + public float[] GetInvQuantData() + { + return _data; + } + + public ICSInfo GetInfo() + { + return _info; + } + + public int[] GetSectEnd() + { + return _sectEnd; + } + + public int[] getSfbCB() + { + return _sfbCB; + } + + public float[] GetScaleFactors() + { + return _scaleFactors; + } + + public bool IsTNSDataPresent() + { + return _tnsDataPresent; + } + + public TNS GetTNS() + { + return _tns; + } + + public int GetGlobalGain() + { + return _globalGain; + } + + public bool IsNoiseUsed() + { + return _noiseUsed; + } + + public int GetLongestCodewordLength() + { + return _longestCodewordLen; + } + + public int GetReorderedSpectralDataLength() + { + return _reorderedSpectralDataLen; + } + + public bool IsGainControlPresent() + { + return _gainControlPresent; + } + + public GainControl GetGainControl() + { + return _gainControl; + } + } +} diff --git a/SharpJaad.AAC/Syntax/IQTable.cs b/SharpJaad.AAC/Syntax/IQTable.cs new file mode 100644 index 0000000..c1d4942 --- /dev/null +++ b/SharpJaad.AAC/Syntax/IQTable.cs @@ -0,0 +1,8199 @@ +namespace SharpJaad.AAC.Syntax +{ + public static class IQTable + { + public static float[] IQ_TABLE = { + 0.0f, + 1.0f, + 2.519842099789746f, + 4.3267487109222245f, + 6.3496042078727974f, + 8.549879733383484f, + 10.902723556992836f, + 13.390518279406722f, + 15.999999999999998f, + 18.720754407467133f, + 21.544346900318835f, + 24.463780996262464f, + 27.47314182127996f, + 30.567350940369842f, + 33.74199169845321f, + 36.993181114957046f, + 40.317473596635935f, + 43.71178704118999f, + 47.173345095760126f, + 50.69963132571694f, + 54.28835233189812f, + 57.93740770400352f, + 61.6448652744185f, + 65.40894053658599f, + 69.22797937475559f, + 73.10044345532164f, + 77.02489777859162f, + 80.99999999999997f, + 85.02449121251853f, + 89.09718794488955f, + 93.21697517861574f, + 97.38280022413316f, + 101.59366732596474f, + 105.84863288986224f, + 110.14680124343441f, + 114.4873208566006f, + 118.86938096020653f, + 123.29220851090024f, + 127.75506545836058f, + 132.25724627755247f, + 136.79807573413572f, + 141.3769068556919f, + 145.99311908523086f, + 150.6461165966291f, + 155.33532675434674f, + 160.0601987020528f, + 164.8202020667335f, + 169.6148257665186f, + 174.44357691188537f, + 179.30597979112554f, + 184.20157493201927f, + 189.12991823257562f, + 194.09058015449685f, + 199.08314497371674f, + 204.1072100829694f, + 209.16238534187647f, + 214.24829247050752f, + 219.36456448277784f, + 224.51084515641213f, + 229.6867885365223f, + 234.89205847013176f, + 240.1263281692325f, + 245.38927980018508f, + 250.6806040974726f, + 255.99999999999991f, + 261.3471743082887f, + 266.7218413610645f, + 272.12372272986045f, + 277.5525469303796f, + 283.0080491494619f, + 288.4899709865989f, + 293.99806020902247f, + 299.5320705194741f, + 305.0917613358298f, + 310.67689758182206f, + 316.28724948815585f, + 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+} diff --git a/SharpJaad.AAC/Syntax/PCE.cs b/SharpJaad.AAC/Syntax/PCE.cs new file mode 100644 index 0000000..dd54239 --- /dev/null +++ b/SharpJaad.AAC/Syntax/PCE.cs @@ -0,0 +1,179 @@ +namespace SharpJaad.AAC.Syntax +{ + public class PCE : Element + { + private const int MAX_FRONT_CHANNEL_ELEMENTS = 16; + private const int MAX_SIDE_CHANNEL_ELEMENTS = 16; + private const int MAX_BACK_CHANNEL_ELEMENTS = 16; + private const int MAX_LFE_CHANNEL_ELEMENTS = 4; + private const int MAX_ASSOC_DATA_ELEMENTS = 8; + private const int MAX_VALID_CC_ELEMENTS = 16; + + public sealed class TaggedElement + { + public bool _isCPE; + public int _tag; + + public TaggedElement(bool isCPE, int tag) + { + _isCPE = isCPE; + _tag = tag; + } + + public bool IsIsCPE() + { + return _isCPE; + } + + public int GetTag() + { + return _tag; + } + } + + public sealed class CCE + { + public bool _isIndSW; + public int _tag; + + public CCE(bool isIndSW, int tag) + { + _isIndSW = isIndSW; + _tag = tag; + } + + public bool IsIsIndSW() + { + return _isIndSW; + } + + public int GetTag() + { + return _tag; + } + } + + private Profile _profile; + private SampleFrequency _sampleFrequency; + private int _frontChannelElementsCount, _sideChannelElementsCount, _backChannelElementsCount; + private int _lfeChannelElementsCount, _assocDataElementsCount; + private int _validCCElementsCount; + private bool _monoMixdown, _stereoMixdown, _matrixMixdownIDXPresent; + private int _monoMixdownElementNumber, _stereoMixdownElementNumber, _matrixMixdownIDX; + private bool _pseudoSurround; + private TaggedElement[] _frontElements, _sideElements, _backElements; + private int[] _lfeElementTags; + private int[] _assocDataElementTags; + private CCE[] _ccElements; + private byte[] _commentFieldData; + + public PCE() + { + _frontElements = new TaggedElement[MAX_FRONT_CHANNEL_ELEMENTS]; + _sideElements = new TaggedElement[MAX_SIDE_CHANNEL_ELEMENTS]; + _backElements = new TaggedElement[MAX_BACK_CHANNEL_ELEMENTS]; + _lfeElementTags = new int[MAX_LFE_CHANNEL_ELEMENTS]; + _assocDataElementTags = new int[MAX_ASSOC_DATA_ELEMENTS]; + _ccElements = new CCE[MAX_VALID_CC_ELEMENTS]; + _sampleFrequency = SampleFrequency.SAMPLE_FREQUENCY_NONE; + } + + public void Decode(BitStream input) + { + ReadElementInstanceTag(input); + + _profile = (Profile)input.ReadBits(2); + + _sampleFrequency = (SampleFrequency)input.ReadBits(4); + + _frontChannelElementsCount = input.ReadBits(4); + _sideChannelElementsCount = input.ReadBits(4); + _backChannelElementsCount = input.ReadBits(4); + _lfeChannelElementsCount = input.ReadBits(2); + _assocDataElementsCount = input.ReadBits(3); + _validCCElementsCount = input.ReadBits(4); + + if (_monoMixdown = input.ReadBool()) + { + //Constants.LOGGER.warning("mono mixdown present, but not yet supported"); + _monoMixdownElementNumber = input.ReadBits(4); + } + if (_stereoMixdown = input.ReadBool()) + { + //Constants.LOGGER.warning("stereo mixdown present, but not yet supported"); + _stereoMixdownElementNumber = input.ReadBits(4); + } + if (_matrixMixdownIDXPresent = input.ReadBool()) + { + //Constants.LOGGER.warning("matrix mixdown present, but not yet supported"); + _matrixMixdownIDX = input.ReadBits(2); + _pseudoSurround = input.ReadBool(); + } + + ReadTaggedElementArray(_frontElements, input, _frontChannelElementsCount); + + ReadTaggedElementArray(_sideElements, input, _sideChannelElementsCount); + + ReadTaggedElementArray(_backElements, input, _backChannelElementsCount); + + int i; + for (i = 0; i < _lfeChannelElementsCount; ++i) + { + _lfeElementTags[i] = input.ReadBits(4); + } + + for (i = 0; i < _assocDataElementsCount; ++i) + { + _assocDataElementTags[i] = input.ReadBits(4); + } + + for (i = 0; i < _validCCElementsCount; ++i) + { + _ccElements[i] = new CCE(input.ReadBool(), input.ReadBits(4)); + } + + input.ByteAlign(); + + int commentFieldBytes = input.ReadBits(8); + _commentFieldData = new byte[commentFieldBytes]; + for (i = 0; i < commentFieldBytes; i++) + { + _commentFieldData[i] = (byte)input.ReadBits(8); + } + } + + private void ReadTaggedElementArray(TaggedElement[] te, BitStream input, int len) + { + for (int i = 0; i < len; ++i) + { + te[i] = new TaggedElement(input.ReadBool(), input.ReadBits(4)); + } + } + + public Profile GetProfile() + { + return _profile; + } + + public SampleFrequency GetSampleFrequency() + { + return _sampleFrequency; + } + + public int GetChannelCount() + { + int count = _lfeChannelElementsCount + _assocDataElementsCount; + + for (int n = 0; n < _frontChannelElementsCount; ++n) + count += _frontElements[n]._isCPE ? 2 : 1; + + for (int n = 0; n < _sideChannelElementsCount; ++n) + count += _sideElements[n]._isCPE ? 2 : 1; + + for (int n = 0; n < _backChannelElementsCount; ++n) + count += _backElements[n]._isCPE ? 2 : 1; + + return count; + } + } +} diff --git a/SharpJaad.AAC/Syntax/SCE_LFE.cs b/SharpJaad.AAC/Syntax/SCE_LFE.cs new file mode 100644 index 0000000..163f052 --- /dev/null +++ b/SharpJaad.AAC/Syntax/SCE_LFE.cs @@ -0,0 +1,23 @@ +namespace SharpJaad.AAC.Syntax +{ + public class SCE_LFE : Element + { + private ICStream _ics; + + public SCE_LFE(DecoderConfig config) + { + _ics = new ICStream(config); + } + + public void Decode(BitStream input, DecoderConfig conf) + { + ReadElementInstanceTag(input); + _ics.Decode(input, false, conf); + } + + public ICStream GetICStream() + { + return _ics; + } + } +} diff --git a/SharpJaad.AAC/Syntax/ScaleFactorBands.cs b/SharpJaad.AAC/Syntax/ScaleFactorBands.cs new file mode 100644 index 0000000..532d22b --- /dev/null +++ b/SharpJaad.AAC/Syntax/ScaleFactorBands.cs @@ -0,0 +1,112 @@ +namespace SharpJaad.AAC.Syntax +{ + public static class ScaleFactorBands + { + /* scalefactor-band tables end with -1, so that an error can be detected + by index[i+1] without an exception */ + public static int[] SWB_LONG_WINDOW_COUNT = { + 41, 41, 47, 49, 49, 51, 47, 47, 43, 43, 43, 40 + }; + public static int[] SWB_OFFSET_1024_96 = { + 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, + 64, 72, 80, 88, 96, 108, 120, 132, 144, 156, 172, 188, 212, 240, + 276, 320, 384, 448, 512, 576, 640, 704, 768, 832, 896, 960, 1024, + -1 + }; + public static int[] SWB_OFFSET_1024_64 = { + 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, + 64, 72, 80, 88, 100, 112, 124, 140, 156, 172, 192, 216, 240, 268, + 304, 344, 384, 424, 464, 504, 544, 584, 624, 664, 704, 744, 784, 824, + 864, 904, 944, 984, 1024, + -1 + }; + public static int[] SWB_OFFSET_1024_48 = { + 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 48, 56, 64, 72, + 80, 88, 96, 108, 120, 132, 144, 160, 176, 196, 216, 240, 264, 292, + 320, 352, 384, 416, 448, 480, 512, 544, 576, 608, 640, 672, 704, 736, + 768, 800, 832, 864, 896, 928, 1024, + -1 + }; + public static int[] SWB_OFFSET_1024_32 = { + 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 48, 56, 64, 72, + 80, 88, 96, 108, 120, 132, 144, 160, 176, 196, 216, 240, 264, 292, + 320, 352, 384, 416, 448, 480, 512, 544, 576, 608, 640, 672, 704, 736, + 768, 800, 832, 864, 896, 928, 960, 992, 1024, + -1 + }; + public static int[] SWB_OFFSET_1024_24 = { + 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 52, 60, 68, + 76, 84, 92, 100, 108, 116, 124, 136, 148, 160, 172, 188, 204, 220, + 240, 260, 284, 308, 336, 364, 396, 432, 468, 508, 552, 600, 652, 704, + 768, 832, 896, 960, 1024, + -1 + }; + public static int[] SWB_OFFSET_1024_16 = { + 0, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 100, 112, 124, + 136, 148, 160, 172, 184, 196, 212, 228, 244, 260, 280, 300, 320, 344, + 368, 396, 424, 456, 492, 532, 572, 616, 664, 716, 772, 832, 896, 960, 1024, + -1 + }; + public static int[] SWB_OFFSET_1024_8 = { + 0, 12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, 172, + 188, 204, 220, 236, 252, 268, 288, 308, 328, 348, 372, 396, 420, 448, + 476, 508, 544, 580, 620, 664, 712, 764, 820, 880, 944, 1024, + -1 + }; + public static int[][] SWB_OFFSET_LONG_WINDOW = { + SWB_OFFSET_1024_96, + SWB_OFFSET_1024_96, + SWB_OFFSET_1024_64, + SWB_OFFSET_1024_48, + SWB_OFFSET_1024_48, + SWB_OFFSET_1024_32, + SWB_OFFSET_1024_24, + SWB_OFFSET_1024_24, + SWB_OFFSET_1024_16, + SWB_OFFSET_1024_16, + SWB_OFFSET_1024_16, + SWB_OFFSET_1024_8 + }; + public static int[] SWB_SHORT_WINDOW_COUNT = { + 12, 12, 12, 14, 14, 14, 15, 15, 15, 15, 15, 15 + }; + public static int[] SWB_OFFSET_128_96 = { + 0, 4, 8, 12, 16, 20, 24, 32, 40, 48, 64, 92, 128, + -1 + }; + public static int[] SWB_OFFSET_128_64 = { + 0, 4, 8, 12, 16, 20, 24, 32, 40, 48, 64, 92, 128, + -1 + }; + public static int[] SWB_OFFSET_128_48 = { + 0, 4, 8, 12, 16, 20, 28, 36, 44, 56, 68, 80, 96, 112, 128, + -1 + }; + public static int[] SWB_OFFSET_128_24 = { + 0, 4, 8, 12, 16, 20, 24, 28, 36, 44, 52, 64, 76, 92, 108, 128, + -1 + }; + public static int[] SWB_OFFSET_128_16 = { + 0, 4, 8, 12, 16, 20, 24, 28, 32, 40, 48, 60, 72, 88, 108, 128, + -1 + }; + public static int[] SWB_OFFSET_128_8 = { + 0, 4, 8, 12, 16, 20, 24, 28, 36, 44, 52, 60, 72, 88, 108, 128, + -1 + }; + public static int[][] SWB_OFFSET_SHORT_WINDOW = { + SWB_OFFSET_128_96, + SWB_OFFSET_128_96, + SWB_OFFSET_128_64, + SWB_OFFSET_128_48, + SWB_OFFSET_128_48, + SWB_OFFSET_128_48, + SWB_OFFSET_128_24, + SWB_OFFSET_128_24, + SWB_OFFSET_128_16, + SWB_OFFSET_128_16, + SWB_OFFSET_128_16, + SWB_OFFSET_128_8 + }; + } +} diff --git a/SharpJaad.AAC/Syntax/ScaleFactorTable.cs b/SharpJaad.AAC/Syntax/ScaleFactorTable.cs new file mode 100644 index 0000000..2a4f092 --- /dev/null +++ b/SharpJaad.AAC/Syntax/ScaleFactorTable.cs @@ -0,0 +1,94 @@ +namespace SharpJaad.AAC.Syntax +{ + public static class ScaleFactorTable + { + public static float[] SCALEFACTOR_TABLE = {8.881784E-16f, 1.0562281E-15f, 1.2560739E-15f, + 1.4937321E-15f, 1.7763568E-15f, 2.1124561E-15f, + 2.5121479E-15f, 2.9874642E-15f, 3.5527137E-15f, 4.2249122E-15f, 5.0242958E-15f, + 5.9749285E-15f, 7.1054274E-15f, 8.4498245E-15f, 1.00485916E-14f, 1.1949857E-14f, + 1.4210855E-14f, 1.6899649E-14f, 2.0097183E-14f, 2.3899714E-14f, 2.842171E-14f, + 3.3799298E-14f, 4.0194366E-14f, 4.7799428E-14f, 5.684342E-14f, 6.7598596E-14f, + 8.038873E-14f, 9.5598856E-14f, 1.1368684E-13f, 1.3519719E-13f, 1.6077747E-13f, + 1.9119771E-13f, 2.2737368E-13f, 2.7039438E-13f, 3.2155493E-13f, 3.8239542E-13f, + 4.5474735E-13f, 5.4078877E-13f, 6.4310986E-13f, 7.6479085E-13f, 9.094947E-13f, + 1.0815775E-12f, 1.2862197E-12f, 1.5295817E-12f, 1.8189894E-12f, 2.163155E-12f, + 2.5724394E-12f, 3.0591634E-12f, 3.6379788E-12f, 4.32631E-12f, 5.144879E-12f, + 6.1183268E-12f, 7.2759576E-12f, 8.65262E-12f, 1.0289758E-11f, 1.22366535E-11f, + 1.4551915E-11f, 1.730524E-11f, 2.0579516E-11f, 2.4473307E-11f, 2.910383E-11f, + 3.461048E-11f, 4.115903E-11f, 4.8946614E-11f, 5.820766E-11f, 6.922096E-11f, + 8.231806E-11f, 9.789323E-11f, 1.1641532E-10f, 1.3844192E-10f, 1.6463612E-10f, + 1.9578646E-10f, 2.3283064E-10f, 2.7688385E-10f, 3.2927225E-10f, 3.915729E-10f, + 4.656613E-10f, 5.537677E-10f, 6.585445E-10f, 7.831458E-10f, 9.313226E-10f, + 1.1075354E-9f, 1.317089E-9f, 1.5662917E-9f, 1.8626451E-9f, 2.2150708E-9f, + 2.634178E-9f, 3.1325833E-9f, 3.7252903E-9f, 4.4301416E-9f, 5.268356E-9f, + 6.2651666E-9f, 7.4505806E-9f, 8.860283E-9f, 1.0536712E-8f, 1.2530333E-8f, + 1.4901161E-8f, 1.7720566E-8f, 2.1073424E-8f, 2.5060666E-8f, 2.9802322E-8f, + 3.5441133E-8f, 4.2146848E-8f, 5.0121333E-8f, 5.9604645E-8f, 7.0882265E-8f, + 8.4293696E-8f, 1.00242666E-7f, 1.1920929E-7f, 1.4176453E-7f, 1.6858739E-7f, + 2.0048533E-7f, 2.3841858E-7f, 2.8352906E-7f, 3.3717478E-7f, 4.0097066E-7f, + 4.7683716E-7f, 5.670581E-7f, 6.7434956E-7f, 8.019413E-7f, 9.536743E-7f, + 1.1341162E-6f, 1.3486991E-6f, 1.6038827E-6f, 1.9073486E-6f, 2.2682325E-6f, + 2.6973983E-6f, 3.2077653E-6f, 3.8146973E-6f, 4.536465E-6f, 5.3947965E-6f, + 6.4155306E-6f, 7.6293945E-6f, 9.07293E-6f, 1.0789593E-5f, 1.2831061E-5f, + 1.5258789E-5f, 1.814586E-5f, 2.1579186E-5f, 2.5662122E-5f, 3.0517578E-5f, + 3.629172E-5f, 4.3158372E-5f, 5.1324245E-5f, 6.1035156E-5f, 7.258344E-5f, + 8.6316744E-5f, 1.0264849E-4f, 1.2207031E-4f, 1.4516688E-4f, 1.7263349E-4f, + 2.0529698E-4f, 2.4414062E-4f, 2.9033376E-4f, 3.4526698E-4f, 4.1059396E-4f, + 4.8828125E-4f, 5.806675E-4f, 6.9053395E-4f, 8.211879E-4f, 9.765625E-4f, + 0.001161335f, 0.0013810679f, 0.0016423758f, 0.001953125f, 0.00232267f, + 0.0027621358f, 0.0032847517f, 0.00390625f, 0.00464534f, 0.0055242716f, + 0.0065695033f, 0.0078125f, 0.00929068f, 0.011048543f, 0.013139007f, + 0.015625f, 0.01858136f, 0.022097087f, 0.026278013f, 0.03125f, + 0.03716272f, 0.044194173f, 0.052556027f, 0.0625f, 0.07432544f, + 0.088388346f, 0.10511205f, 0.125f, 0.14865088f, 0.17677669f, + 0.2102241f, 0.25f, 0.29730177f, 0.35355338f, 0.4204482f, + 0.5f, 0.59460354f, 0.70710677f, 0.8408964f, 1.0f, + 1.1892071f, 1.4142135f, 1.6817929f, 2.0f, 2.3784142f, + 2.828427f, 3.3635857f, 4.0f, 4.7568283f, 5.656854f, + 6.7271714f, 8.0f, 9.513657f, 11.313708f, 13.454343f, + 16.0f, 19.027313f, 22.627417f, 26.908686f, 32.0f, + 38.054626f, 45.254833f, 53.81737f, 64.0f, 76.10925f, + 90.50967f, 107.63474f, 128.0f, 152.2185f, 181.01933f, + 215.26949f, 256.0f, 304.437f, 362.03867f, 430.53897f, + 512.0f, 608.874f, 724.07733f, 861.07794f, 1024.0f, + 1217.748f, 1448.1547f, 1722.1559f, 2048.0f, 2435.496f, + 2896.3093f, 3444.3118f, 4096.0f, 4870.992f, 5792.6187f, + 6888.6235f, 8192.0f, 9741.984f, 11585.237f, 13777.247f, + 16384.0f, 19483.969f, 23170.475f, 27554.494f, 32768.0f, + 38967.938f, 46340.95f, 55108.99f, 65536.0f, 77935.875f, + 92681.9f, 110217.98f, 131072.0f, 155871.75f, 185363.8f, + 220435.95f, 262144.0f, 311743.5f, 370727.6f, 440871.9f, + 524288.0f, 623487.0f, 741455.2f, 881743.8f, 1048576.0f, + 1246974.0f, 1482910.4f, 1763487.6f, 2097152.0f, 2493948.0f, + 2965820.8f, 3526975.2f, 4194304.0f, 4987896.0f, 5931641.5f, + 7053950.5f, 8388608.0f, 9975792.0f, 1.1863283E7f, 1.4107901E7f, + 1.6777216E7f, 1.9951584E7f, 2.3726566E7f, 2.8215802E7f, 3.3554432E7f, + 3.9903168E7f, 4.7453132E7f, 5.6431604E7f, 6.7108864E7f, 7.9806336E7f, + 9.4906264E7f, 1.12863208E8f, 1.34217728E8f, 1.59612672E8f, 1.89812528E8f, + 2.25726416E8f, 2.68435456E8f, 3.19225344E8f, 3.79625056E8f, 4.51452832E8f, + 5.3687091E8f, 6.3845069E8f, 7.5925011E8f, 9.0290566E8f, 1.07374182E9f, + 1.27690138E9f, 1.51850022E9f, 1.80581133E9f, 2.14748365E9f, 2.55380275E9f, + 3.03700045E9f, 3.61162266E9f, 4.2949673E9f, 5.1076055E9f, 6.0740009E9f, + 7.2232453E9f, 8.5899346E9f, 1.0215211E10f, 1.21480018E10f, 1.44464906E10f, + 1.71798692E10f, 2.0430422E10f, 2.42960036E10f, 2.88929812E10f, 3.4359738E10f, + 4.0860844E10f, 4.8592007E10f, 5.7785962E10f, 6.8719477E10f, 8.1721688E10f, + 9.7184014E10f, 1.15571925E11f, 1.37438953E11f, 1.63443376E11f, 1.94368029E11f, + 2.3114385E11f, 2.74877907E11f, 3.26886752E11f, 3.88736057E11f, 4.622877E11f, + 5.4975581E11f, 6.537735E11f, 7.7747211E11f, 9.245754E11f, 1.09951163E12f, + 1.30754701E12f, 1.55494423E12f, 1.8491508E12f, 2.19902326E12f, 2.61509402E12f, + 3.10988846E12f, 3.6983016E12f, 4.3980465E12f, 5.230188E12f, 6.2197769E12f, + 7.3966032E12f, 8.796093E12f, 1.04603761E13f, 1.24395538E13f, 1.47932064E13f, + 1.7592186E13f, 2.09207521E13f, 2.48791077E13f, 2.95864128E13f, 3.5184372E13f, + 4.1841504E13f, 4.9758215E13f, 5.9172826E13f, 7.0368744E13f, 8.3683009E13f, + 9.9516431E13f, 1.18345651E14f, 1.40737488E14f, 1.67366017E14f, 1.99032861E14f, + 2.36691302E14f, 2.81474977E14f, 3.34732034E14f, 3.98065723E14f, 4.73382605E14f, + 5.6294995E14f, 6.6946407E14f, 7.9613145E14f, 9.4676521E14f, 1.12589991E15f, + 1.33892814E15f, 1.59226289E15f, 1.89353042E15f, 2.25179981E15f, 2.67785627E15f, + 3.18452578E15f, 3.78706084E15f, 4.5035996E15f, 5.3557125E15f, 6.3690516E15f, + 7.5741217E15f, 9.0071993E15f, 1.07114251E16f, 1.27381031E16f, 1.51482434E16f, + 1.80143985E16f, 2.14228502E16f, 2.54762063E16f, 3.02964867E16f, 3.6028797E16f, + 4.28457E16f, 5.0952413E16f, 6.0592973E16f, 7.2057594E16f, 8.5691401E16f, + 1.01904825E17f, 1.21185947E17f + }; + } +} diff --git a/SharpJaad.AAC/Syntax/SyntacticElements.cs b/SharpJaad.AAC/Syntax/SyntacticElements.cs new file mode 100644 index 0000000..3bcbc58 --- /dev/null +++ b/SharpJaad.AAC/Syntax/SyntacticElements.cs @@ -0,0 +1,465 @@ +using SharpJaad.AAC.Filterbank; +using SharpJaad.AAC.Sbr; +using SharpJaad.AAC.Tools; +using System; + +namespace SharpJaad.AAC.Syntax +{ + public class SyntacticElements + { + //global properties + private DecoderConfig config; + private bool sbrPresent, psPresent; + private int bitsRead; + private int frame = 0; + //elements + private PCE pce; + private Element[] elements; //SCE, LFE and CPE + private CCE[] cces; + private DSE[] dses; + private FIL[] fils; + private int curElem, curCCE, curDSE, curFIL; + private float[][] data; + + public SyntacticElements(DecoderConfig config) + { + this.config = config; + + pce = new PCE(); + elements = new Element[4 * Constants.MAX_ELEMENTS]; + cces = new CCE[Constants.MAX_ELEMENTS]; + dses = new DSE[Constants.MAX_ELEMENTS]; + fils = new FIL[Constants.MAX_ELEMENTS]; + + StartNewFrame(); + } + + public void StartNewFrame() + { + curElem = 0; + curCCE = 0; + curDSE = 0; + curFIL = 0; + sbrPresent = false; + psPresent = false; + bitsRead = 0; + } + + public void Decode(BitStream input) + { + ++frame; + int start = input.GetPosition(); //should be 0 + + int type; + Element prev = null; + bool content = true; + if (!config.GetProfile().IsErrorResilientProfile()) + { + while (content && (type = input.ReadBits(3)) != Constants.ELEMENT_END) + { + switch (type) + { + case Constants.ELEMENT_SCE: + case Constants.ELEMENT_LFE: + //LOGGER.finest("SCE"); + prev = DecodeSCE_LFE(input); + break; + case Constants.ELEMENT_CPE: + //LOGGER.finest("CPE"); + prev = DecodeCPE(input); + break; + case Constants.ELEMENT_CCE: + //LOGGER.finest("CCE"); + DecodeCCE(input); + prev = null; + break; + case Constants.ELEMENT_DSE: + //LOGGER.finest("DSE"); + DecodeDSE(input); + prev = null; + break; + case Constants.ELEMENT_PCE: + //LOGGER.finest("PCE"); + DecodePCE(input); + prev = null; + break; + case Constants.ELEMENT_FIL: + //LOGGER.finest("FIL"); + DecodeFIL(input, prev); + prev = null; + break; + } + } + //LOGGER.finest("END"); + content = false; + prev = null; + } + else + { + //error resilient raw data block + switch (config.GetChannelConfiguration()) + { + case ChannelConfiguration.CHANNEL_CONFIG_MONO: + DecodeSCE_LFE(input); + break; + case ChannelConfiguration.CHANNEL_CONFIG_STEREO: + DecodeCPE(input); + break; + case ChannelConfiguration.CHANNEL_CONFIG_STEREO_PLUS_CENTER: + DecodeSCE_LFE(input); + DecodeCPE(input); + break; + case ChannelConfiguration.CHANNEL_CONFIG_STEREO_PLUS_CENTER_PLUS_REAR_MONO: + DecodeSCE_LFE(input); + DecodeCPE(input); + DecodeSCE_LFE(input); + break; + case ChannelConfiguration.CHANNEL_CONFIG_FIVE: + DecodeSCE_LFE(input); + DecodeCPE(input); + DecodeCPE(input); + break; + case ChannelConfiguration.CHANNEL_CONFIG_FIVE_PLUS_ONE: + DecodeSCE_LFE(input); + DecodeCPE(input); + DecodeCPE(input); + DecodeSCE_LFE(input); + break; + case ChannelConfiguration.CHANNEL_CONFIG_SEVEN_PLUS_ONE: + DecodeSCE_LFE(input); + DecodeCPE(input); + DecodeCPE(input); + DecodeCPE(input); + DecodeSCE_LFE(input); + break; + default: + throw new AACException("unsupported channel configuration for error resilience: " + config.GetChannelConfiguration()); + } + } + input.ByteAlign(); + + bitsRead = input.GetPosition() - start; + } + + private Element DecodeSCE_LFE(BitStream input) + { + if (elements[curElem] == null) elements[curElem] = new SCE_LFE(config); + ((SCE_LFE)elements[curElem]).Decode(input, config); + curElem++; + return elements[curElem - 1]; + } + + private Element DecodeCPE(BitStream input) + { + if (elements[curElem] == null) elements[curElem] = new CPE(config); + ((CPE)elements[curElem]).Decode(input, config); + curElem++; + return elements[curElem - 1]; + } + + private void DecodeCCE(BitStream input) + { + if (curCCE == Constants.MAX_ELEMENTS) throw new AACException("too much CCE elements"); + if (cces[curCCE] == null) cces[curCCE] = new CCE(config); + cces[curCCE].Decode(input, config); + curCCE++; + } + + private void DecodeDSE(BitStream input) + { + if (curDSE == Constants.MAX_ELEMENTS) throw new AACException("too much CCE elements"); + if (dses[curDSE] == null) dses[curDSE] = new DSE(); + dses[curDSE].Decode(input); + curDSE++; + } + + private void DecodePCE(BitStream input) + { + pce.Decode(input); + config.SetProfile(pce.GetProfile()); + config.SetSampleFrequency(pce.GetSampleFrequency()); + config.SetChannelConfiguration((ChannelConfiguration)pce.GetChannelCount()); + } + + private void DecodeFIL(BitStream input, Element prev) + { + if (curFIL == Constants.MAX_ELEMENTS) throw new AACException("too much FIL elements"); + if (fils[curFIL] == null) fils[curFIL] = new FIL(config.IsSBRDownSampled()); + fils[curFIL].Decode(input, prev, config.GetSampleFrequency(), config.IsSBREnabled(), config.IsSmallFrameUsed()); + curFIL++; + + if (prev != null && prev.IsSBRPresent()) + { + sbrPresent = true; + if (!psPresent && prev.GetSBR().IsPSUsed()) psPresent = true; + } + } + + public void Process(FilterBank filterBank) + { + Profile profile = config.GetProfile(); + SampleFrequency sf = config.GetSampleFrequency(); + //final ChannelConfiguration channels = config.getChannelConfiguration(); + + int chs = (int)config.GetChannelConfiguration(); + if (chs == 1 && psPresent) chs++; + int mult = sbrPresent ? 2 : 1; + //only reallocate if needed + if (data == null || chs != data.Length || mult * config.GetFrameLength() != data[0].Length) + { + data = new float[chs][]; + + for (int i = 0; i < chs; i++) + { + data[i] = new float[mult * config.GetFrameLength()]; + } + } + + int channel = 0; + Element e; + SCE_LFE scelfe; + CPE cpe; + for (int i = 0; i < elements.Length && channel < chs; i++) + { + e = elements[i]; + if (e == null) continue; + if (e is SCE_LFE) + { + scelfe = (SCE_LFE)e; + channel += ProcessSingle(scelfe, filterBank, channel, profile, sf); + } + else if (e is CPE) + { + cpe = (CPE)e; + ProcessPair(cpe, filterBank, channel, profile, sf); + channel += 2; + } + else if (e is CCE) + { + //applies invquant and save the result in the CCE + ((CCE)e).Process(); + channel++; + } + } + } + + private int ProcessSingle(SCE_LFE scelfe, FilterBank filterBank, int channel, Profile profile, SampleFrequency sf) + { + ICStream ics = scelfe.GetICStream(); + ICSInfo info = ics.GetInfo(); + LTPrediction ltp = info.GetLTPrediction(); + int elementID = scelfe.GetElementInstanceTag(); + + //inverse quantization + float[] iqData = ics.GetInvQuantData(); + + //prediction + if (profile.Equals(Profile.AAC_MAIN) && info.IsICPredictionPresent()) info.GetICPrediction().Process(ics, iqData, sf); + if (ltp != null) ltp.Process(ics, iqData, filterBank, sf); + + //dependent coupling + processDependentCoupling(false, elementID, CCE.BEFORE_TNS, iqData, null); + + //TNS + if (ics.IsTNSDataPresent()) ics.GetTNS().Process(ics, iqData, sf, false); + + //dependent coupling + processDependentCoupling(false, elementID, CCE.AFTER_TNS, iqData, null); + + //filterbank + filterBank.Process(info.GetWindowSequence(), info.GetWindowShape(ICSInfo.CURRENT), info.GetWindowShape(ICSInfo.PREVIOUS), iqData, data[channel], channel); + + if (ltp != null) ltp.UpdateState(data[channel], filterBank.GetOverlap(channel), profile); + + //dependent coupling + ProcessIndependentCoupling(false, elementID, data[channel], null); + + //gain control + if (ics.IsGainControlPresent()) ics.GetGainControl().Process(iqData, info.GetWindowShape(ICSInfo.CURRENT), info.GetWindowShape(ICSInfo.PREVIOUS), info.GetWindowSequence()); + + //SBR + int chs = 1; + if (sbrPresent && config.IsSBREnabled()) + { + //if(data[channel].Length==config.getFrameLength()) LOGGER.log(Level.WARNING, "SBR data present, but buffer has normal size!"); + SBR sbr = scelfe.GetSBR(); + if (sbr.IsPSUsed()) + { + chs = 2; + scelfe.GetSBR().ProcessPS(data[channel], data[channel + 1], false); + } + else + scelfe.GetSBR().Process(data[channel], false); + } + return chs; + } + + private void ProcessPair(CPE cpe, FilterBank filterBank, int channel, Profile profile, SampleFrequency sf) + { + ICStream ics1 = cpe.GetLeftChannel(); + ICStream ics2 = cpe.GetRightChannel(); + ICSInfo info1 = ics1.GetInfo(); + ICSInfo info2 = ics2.GetInfo(); + LTPrediction ltp1 = info1.GetLTPrediction(); + LTPrediction ltp2 = info2.GetLTPrediction(); + int elementID = cpe.GetElementInstanceTag(); + + //inverse quantization + float[] iqData1 = ics1.GetInvQuantData(); + float[] iqData2 = ics2.GetInvQuantData(); + + //MS + if (cpe.IsCommonWindow() && cpe.IsMSMaskPresent()) SharpJaad.AAC.Tools.MS.Process(cpe, iqData1, iqData2); + //main prediction + if (profile.Equals(Profile.AAC_MAIN)) + { + if (info1.IsICPredictionPresent()) info1.GetICPrediction().Process(ics1, iqData1, sf); + if (info2.IsICPredictionPresent()) info2.GetICPrediction().Process(ics2, iqData2, sf); + } + //IS + IS.Process(cpe, iqData1, iqData2); + + //LTP + if (ltp1 != null) ltp1.Process(ics1, iqData1, filterBank, sf); + if (ltp2 != null) ltp2.Process(ics2, iqData2, filterBank, sf); + + //dependent coupling + processDependentCoupling(true, elementID, CCE.BEFORE_TNS, iqData1, iqData2); + + //TNS + if (ics1.IsTNSDataPresent()) ics1.GetTNS().Process(ics1, iqData1, sf, false); + if (ics2.IsTNSDataPresent()) ics2.GetTNS().Process(ics2, iqData2, sf, false); + + //dependent coupling + processDependentCoupling(true, elementID, CCE.AFTER_TNS, iqData1, iqData2); + + //filterbank + filterBank.Process(info1.GetWindowSequence(), info1.GetWindowShape(ICSInfo.CURRENT), info1.GetWindowShape(ICSInfo.PREVIOUS), iqData1, data[channel], channel); + filterBank.Process(info2.GetWindowSequence(), info2.GetWindowShape(ICSInfo.CURRENT), info2.GetWindowShape(ICSInfo.PREVIOUS), iqData2, data[channel + 1], channel + 1); + + if (ltp1 != null) ltp1.UpdateState(data[channel], filterBank.GetOverlap(channel), profile); + if (ltp2 != null) ltp2.UpdateState(data[channel + 1], filterBank.GetOverlap(channel + 1), profile); + + //independent coupling + ProcessIndependentCoupling(true, elementID, data[channel], data[channel + 1]); + + //gain control + if (ics1.IsGainControlPresent()) ics1.GetGainControl().Process(iqData1, info1.GetWindowShape(ICSInfo.CURRENT), info1.GetWindowShape(ICSInfo.PREVIOUS), info1.GetWindowSequence()); + if (ics2.IsGainControlPresent()) ics2.GetGainControl().Process(iqData2, info2.GetWindowShape(ICSInfo.CURRENT), info2.GetWindowShape(ICSInfo.PREVIOUS), info2.GetWindowSequence()); + + //SBR + if (sbrPresent && config.IsSBREnabled()) + { + //if(data[channel].Length==config.getFrameLength()) LOGGER.log(Level.WARNING, "SBR data present, but buffer has normal size!"); + cpe.GetSBR().Process(data[channel], data[channel + 1], false); + } + } + + private void ProcessIndependentCoupling(bool channelPair, int elementID, float[] data1, float[] data2) + { + int index, c, chSelect; + CCE cce; + for (int i = 0; i < cces.Length; i++) + { + cce = cces[i]; + index = 0; + if (cce != null && cce.GetCouplingPoint() == CCE.AFTER_IMDCT) + { + for (c = 0; c <= cce.GetCoupledCount(); c++) + { + chSelect = cce.GetCHSelect(c); + if (cce.IsChannelPair(c) == channelPair && cce.GetIDSelect(c) == elementID) + { + if (chSelect != 1) + { + cce.ApplyIndependentCoupling(index, data1); + if (chSelect != 0) index++; + } + if (chSelect != 2) + { + cce.ApplyIndependentCoupling(index, data2); + index++; + } + } + else index += 1 + (chSelect == 3 ? 1 : 0); + } + } + } + } + + private void processDependentCoupling(bool channelPair, int elementID, int couplingPoint, float[] data1, float[] data2) + { + int index, c, chSelect; + CCE cce; + for (int i = 0; i < cces.Length; i++) + { + cce = cces[i]; + index = 0; + if (cce != null && cce.GetCouplingPoint() == couplingPoint) + { + for (c = 0; c <= cce.GetCoupledCount(); c++) + { + chSelect = cce.GetCHSelect(c); + if (cce.IsChannelPair(c) == channelPair && cce.GetIDSelect(c) == elementID) + { + if (chSelect != 1) + { + cce.ApplyDependentCoupling(index, data1); + if (chSelect != 0) index++; + } + if (chSelect != 2) + { + cce.ApplyDependentCoupling(index, data2); + index++; + } + } + else + index += 1 + (chSelect == 3 ? 1 : 0); + } + } + } + } + + public void SendToOutput(SampleBuffer buffer) + { + bool be = buffer.BigEndian; + + // always allocate at least two channels + // mono can't be upgraded after implicit PS occures + int chs = Math.Max(data.Length, 2); + + int mult = sbrPresent && config.IsSBREnabled() ? 2 : 1; + int length = mult * config.GetFrameLength(); + int freq = mult * config.GetSampleFrequency().GetFrequency(); + + byte[] b = buffer.Data; + if (b.Length != chs * length * 2) b = new byte[chs * length * 2]; + + float[] cur; + int i, j, off; + short s; + for (i = 0; i < chs; i++) + { + // duplicate possible mono channel + cur = data[i < data.Length ? i : 0]; + for (j = 0; j < length; j++) + { + s = (short)Math.Max(Math.Min(Math.Round(cur[j]), short.MaxValue), short.MinValue); + off = (j * chs + i) * 2; + if (be) + { + b[off] = (byte)(s >> 8 & Constants.BYTE_MASK); + b[off + 1] = (byte)(s & Constants.BYTE_MASK); + } + else + { + b[off + 1] = (byte)(s >> 8 & Constants.BYTE_MASK); + b[off] = (byte)(s & Constants.BYTE_MASK); + } + } + } + + buffer.SetData(b, freq, chs, 16, bitsRead); + } + } +} diff --git a/SharpJaad.AAC/Tools/Arrays.cs b/SharpJaad.AAC/Tools/Arrays.cs new file mode 100644 index 0000000..ea9ca5f --- /dev/null +++ b/SharpJaad.AAC/Tools/Arrays.cs @@ -0,0 +1,18 @@ +namespace SharpJaad.AAC.Tools +{ + internal class Arrays + { + public static void Fill(T[] array, T value) + { + Fill(array, 0, array.Length, value); + } + + public static void Fill(T[] array, int fromIndex, int toIndex, T value) + { + for (int i = fromIndex; i < toIndex; i++) + { + array[i] = value; + } + } + } +} diff --git a/SharpJaad.AAC/Tools/ICPrediction.cs b/SharpJaad.AAC/Tools/ICPrediction.cs new file mode 100644 index 0000000..db71928 --- /dev/null +++ b/SharpJaad.AAC/Tools/ICPrediction.cs @@ -0,0 +1,162 @@ +using SharpJaad.AAC.Syntax; +using System; + +namespace SharpJaad.AAC.Tools +{ + public class ICPrediction + { + private const float SF_SCALE = 1.0f / -1024.0f; + private const float INV_SF_SCALE = 1.0f / SF_SCALE; + private const int MAX_PREDICTORS = 672; + private const float A = 0.953125f; //61.0 / 64 + private const float ALPHA = 0.90625f; //29.0 / 32 + private bool _predictorReset; + private int _predictorResetGroup; + private bool[] _predictionUsed; + private PredictorState[] _states; + + private sealed class PredictorState + { + public float _cor0 = 0.0f; + public float _cor1 = 0.0f; + public float _var0 = 0.0f; + public float _var1 = 0.0f; + public float _r0 = 1.0f; + public float _r1 = 1.0f; + } + + public ICPrediction() + { + _states = new PredictorState[MAX_PREDICTORS]; + ResetAllPredictors(); + } + + public void Decode(BitStream input, int maxSFB, SampleFrequency sf) + { + int predictorCount = sf.GetPredictorCount(); + + if (_predictorReset = input.ReadBool()) _predictorResetGroup = input.ReadBits(5); + + int maxPredSFB = sf.GetMaximalPredictionSFB(); + int length = Math.Min(maxSFB, maxPredSFB); + _predictionUsed = new bool[length]; + for (int sfb = 0; sfb < length; sfb++) + { + _predictionUsed[sfb] = input.ReadBool(); + } + //Constants.LOGGER.log(Level.WARNING, "ICPrediction: maxSFB={0}, maxPredSFB={1}", new int[]{maxSFB, maxPredSFB}); + /*//if maxSFB 1 ? cor0 * Even(A / var0) : 0; + float k2 = var1 > 1 ? cor1 * Even(A / var1) : 0; + + float pv = Round(k1 * r0 + k2 * r1); + if (output) data[off] += pv * SF_SCALE; + + float e0 = data[off] * INV_SF_SCALE; + float e1 = e0 - k1 * r0; + + state._cor1 = Trunc(ALPHA * cor1 + r1 * e1); + state._var1 = Trunc(ALPHA * var1 + 0.5f * (r1 * r1 + e1 * e1)); + state._cor0 = Trunc(ALPHA * cor0 + r0 * e0); + state._var0 = Trunc(ALPHA * var0 + 0.5f * (r0 * r0 + e0 * e0)); + + state._r1 = Trunc(A * (r0 - k1 * e0)); + state._r0 = Trunc(A * e0); + } + + private float Round(float pf) + { + return IntBitsToFloat((int)(FloatToIntBits(pf) + 0x00008000 & 0xFFFF0000)); + } + + private float Even(float pf) + { + int i = FloatToIntBits(pf); + i = (int)(i + 0x00007FFF + (i & 0x00010000 >> 16) & 0xFFFF0000); + return IntBitsToFloat(i); + } + + private float Trunc(float pf) + { + return IntBitsToFloat((int)(FloatToIntBits(pf) & 0xFFFF0000)); + } + + private static int FloatToIntBits(float f) + { + return BitConverter.ToInt32(BitConverter.GetBytes(f), 0); + } + + private static float IntBitsToFloat(int i) + { + return BitConverter.ToSingle(BitConverter.GetBytes(i), 0); + } + } +} diff --git a/SharpJaad.AAC/Tools/IS.cs b/SharpJaad.AAC/Tools/IS.cs new file mode 100644 index 0000000..90a951b --- /dev/null +++ b/SharpJaad.AAC/Tools/IS.cs @@ -0,0 +1,56 @@ +using SharpJaad.AAC.Huffman; +using SharpJaad.AAC.Syntax; + +namespace SharpJaad.AAC.Tools +{ + public class IS + { + public static void Process(CPE cpe, float[] specL, float[] specR) + { + ICStream ics = cpe.GetRightChannel(); + ICSInfo info = ics.GetInfo(); + int[] offsets = info.GetSWBOffsets(); + int windowGroups = info.GetWindowGroupCount(); + int maxSFB = info.GetMaxSFB(); + int[] sfbCB = ics.getSfbCB(); + int[] sectEnd = ics.GetSectEnd(); + float[] scaleFactors = ics.GetScaleFactors(); + + int w, i, j, c, end, off; + int idx = 0, groupOff = 0; + float scale; + for (int g = 0; g < windowGroups; g++) + { + for (i = 0; i < maxSFB;) + { + if (sfbCB[idx] == HCB.INTENSITY_HCB || sfbCB[idx] == HCB.INTENSITY_HCB2) + { + end = sectEnd[idx]; + for (; i < end; i++, idx++) + { + c = sfbCB[idx] == HCB.INTENSITY_HCB ? 1 : -1; + if (cpe.IsMSMaskPresent()) + c *= cpe.IsMSUsed(idx) ? -1 : 1; + scale = c * scaleFactors[idx]; + for (w = 0; w < info.GetWindowGroupLength(g); w++) + { + off = groupOff + w * 128 + offsets[i]; + for (j = 0; j < offsets[i + 1] - offsets[i]; j++) + { + specR[off + j] = specL[off + j] * scale; + } + } + } + } + else + { + end = sectEnd[idx]; + idx += end - i; + i = end; + } + } + groupOff += info.GetWindowGroupLength(g) * 128; + } + } + } +} diff --git a/SharpJaad.AAC/Tools/ISScaleTable.cs b/SharpJaad.AAC/Tools/ISScaleTable.cs new file mode 100644 index 0000000..d8faf3e --- /dev/null +++ b/SharpJaad.AAC/Tools/ISScaleTable.cs @@ -0,0 +1,263 @@ +namespace SharpJaad.AAC.Tools +{ + public static class ISScaleTable + { + public static float[] SCALE_TABLE = { + 1.0f, + 0.8408964152537146f, + 0.7071067811865476f, + 0.5946035575013605f, + 0.5f, + 0.4204482076268573f, + 0.35355339059327373f, + 0.29730177875068026f, + 0.25f, + 0.21022410381342865f, + 0.17677669529663687f, + 0.14865088937534013f, + 0.125f, + 0.10511205190671433f, + 0.08838834764831843f, + 0.07432544468767006f, + 0.0625f, + 0.05255602595335716f, + 0.044194173824159216f, + 0.03716272234383503f, + 0.03125f, + 0.02627801297667858f, + 0.022097086912079608f, + 0.018581361171917516f, + 0.015625f, + 0.01313900648833929f, + 0.011048543456039804f, + 0.009290680585958758f, + 0.0078125f, + 0.006569503244169645f, + 0.005524271728019902f, + 0.004645340292979379f, + 0.00390625f, + 0.0032847516220848227f, + 0.002762135864009951f, + 0.0023226701464896895f, + 0.001953125f, + 0.0016423758110424114f, + 0.0013810679320049755f, + 0.0011613350732448448f, + 9.765625E-4f, + 8.211879055212057E-4f, + 6.905339660024878E-4f, + 5.806675366224224E-4f, + 4.8828125E-4f, + 4.1059395276060284E-4f, + 3.452669830012439E-4f, + 2.903337683112112E-4f, + 2.44140625E-4f, + 2.0529697638030142E-4f, + 1.7263349150062194E-4f, + 1.451668841556056E-4f, + 1.220703125E-4f, + 1.0264848819015071E-4f, + 8.631674575031097E-5f, + 7.25834420778028E-5f, + 6.103515625E-5f, + 5.1324244095075355E-5f, + 4.3158372875155485E-5f, + 3.62917210389014E-5f, + 3.0517578125E-5f, + 2.5662122047537677E-5f, + 2.1579186437577742E-5f, + 1.81458605194507E-5f, + 1.52587890625E-5f, + 1.2831061023768839E-5f, + 1.0789593218788871E-5f, + 9.07293025972535E-6f, + 7.62939453125E-6f, + 6.415530511884419E-6f, + 5.394796609394436E-6f, + 4.536465129862675E-6f, + 3.814697265625E-6f, + 3.2077652559422097E-6f, + 2.697398304697218E-6f, + 2.2682325649313374E-6f, + 1.9073486328125E-6f, + 1.6038826279711048E-6f, + 1.348699152348609E-6f, + 1.1341162824656687E-6f, + 9.5367431640625E-7f, + 8.019413139855524E-7f, + 6.743495761743044E-7f, + 5.670581412328344E-7f, + 4.76837158203125E-7f, + 4.009706569927762E-7f, + 3.371747880871522E-7f, + 2.835290706164172E-7f, + 2.384185791015625E-7f, + 2.004853284963881E-7f, + 1.685873940435761E-7f, + 1.417645353082086E-7f, + 1.1920928955078125E-7f, + 1.0024266424819405E-7f, + 8.429369702178806E-8f, + 7.08822676541043E-8f, + 5.9604644775390625E-8f, + 5.0121332124097026E-8f, + 4.214684851089403E-8f, + 3.544113382705215E-8f, + 2.9802322387695312E-8f, + 2.5060666062048513E-8f, + 2.1073424255447014E-8f, + 1.7720566913526073E-8f, + 1.4901161193847656E-8f, + 1.2530333031024257E-8f, + 1.0536712127723507E-8f, + 8.860283456763037E-9f, + 7.450580596923828E-9f, + 6.265166515512128E-9f, + 5.2683560638617535E-9f, + 4.430141728381518E-9f, + 3.725290298461914E-9f, + 3.132583257756064E-9f, + 2.6341780319308768E-9f, + 2.215070864190759E-9f, + 1.862645149230957E-9f, + 1.566291628878032E-9f, + 1.3170890159654384E-9f, + 1.1075354320953796E-9f, + 9.313225746154785E-10f, + 7.83145814439016E-10f, + 6.585445079827192E-10f, + 5.537677160476898E-10f, + 4.6566128730773926E-10f, + 3.91572907219508E-10f, + 3.292722539913596E-10f, + 2.768838580238449E-10f, + 2.3283064365386963E-10f, + 1.95786453609754E-10f, + 1.646361269956798E-10f, + 1.3844192901192245E-10f, + 1.1641532182693481E-10f, + 9.7893226804877E-11f, + 8.23180634978399E-11f, + 6.922096450596122E-11f, + 5.820766091346741E-11f, + 4.89466134024385E-11f, + 4.115903174891995E-11f, + 3.461048225298061E-11f, + 2.9103830456733704E-11f, + 2.447330670121925E-11f, + 2.0579515874459975E-11f, + 1.7305241126490306E-11f, + 1.4551915228366852E-11f, + 1.2236653350609626E-11f, + 1.0289757937229987E-11f, + 8.652620563245153E-12f, + 7.275957614183426E-12f, + 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1.004859173557616E-14f, + 8.449824768794095E-15f, + 7.105427357601002E-15f, + 5.974928393852356E-15f, + 5.02429586778808E-15f, + 4.2249123843970474E-15f, + 3.552713678800501E-15f, + 2.987464196926178E-15f, + 2.51214793389404E-15f, + 2.1124561921985237E-15f, + 1.7763568394002505E-15f, + 1.493732098463089E-15f, + 1.25607396694702E-15f, + 1.0562280960992619E-15f, + 8.881784197001252E-16f, + 7.468660492315445E-16f, + 6.2803698347351E-16f, + 5.281140480496309E-16f, + 4.440892098500626E-16f, + 3.7343302461577226E-16f, + 3.14018491736755E-16f, + 2.6405702402481546E-16f, + 2.220446049250313E-16f, + 1.8671651230788613E-16f, + 1.570092458683775E-16f, + 1.3202851201240773E-16f, + 1.1102230246251565E-16f, + 9.335825615394307E-17f, + 7.850462293418875E-17f, + 6.601425600620387E-17f, + 5.551115123125783E-17f, + 4.667912807697153E-17f, + 3.925231146709437E-17f, + 3.300712800310193E-17f, + 2.7755575615628914E-17f, + 2.3339564038485766E-17f, + 1.9626155733547187E-17f, + 1.6503564001550966E-17f, + 1.3877787807814457E-17f, + 1.1669782019242883E-17f, + 9.813077866773593E-18f, + 8.251782000775483E-18f, + 6.938893903907228E-18f, + 5.834891009621442E-18f, + 4.906538933386797E-18f, + 4.1258910003877416E-18f, + 3.469446951953614E-18f, + 2.917445504810721E-18f, + 2.4532694666933983E-18f, + 2.0629455001938708E-18f, + 1.734723475976807E-18f, + 1.4587227524053604E-18f, + 1.2266347333466992E-18f, + 1.0314727500969354E-18f, + 8.673617379884035E-19f, + 7.293613762026802E-19f, + 6.133173666733496E-19f, + 5.157363750484677E-19f, + 4.3368086899420177E-19f, + 3.646806881013401E-19f, + 3.066586833366748E-19f, + 2.5786818752423385E-19f, + 2.1684043449710089E-19f, + 1.8234034405067005E-19f, + 1.533293416683374E-19f, + 1.2893409376211693E-19f, + 1.0842021724855044E-19f, + 9.117017202533503E-20f, + 7.66646708341687E-20f + }; + } +} diff --git a/SharpJaad.AAC/Tools/LTPrediction.cs b/SharpJaad.AAC/Tools/LTPrediction.cs new file mode 100644 index 0000000..7d9e283 --- /dev/null +++ b/SharpJaad.AAC/Tools/LTPrediction.cs @@ -0,0 +1,179 @@ +using SharpJaad.AAC.Filterbank; +using SharpJaad.AAC.Syntax; +using System; +using System.Linq; + +namespace SharpJaad.AAC.Tools +{ + public class LTPrediction + { + private static readonly float[] CODEBOOK = + { + 0.570829f, + 0.696616f, + 0.813004f, + 0.911304f, + 0.984900f, + 1.067894f, + 1.194601f, + 1.369533f + }; + + private bool _isPresent = false; + + private int _frameLength; + private int[] _states; + private int _coef, _lag, _lastBand; + private bool _lagUpdate; + private bool[] _shortUsed, _shortLagPresent, _longUsed; + private int[] _shortLag; + + public LTPrediction(int frameLength) + { + _frameLength = frameLength; + _states = new int[4 * frameLength]; + } + + public bool IsPresent() + { + return _isPresent; + } + + public void Decode(BitStream input, ICSInfo info, Profile profile) + { + _lag = 0; + + _isPresent = input.ReadBool(); + if (!_isPresent) + { + return; + } + + if (profile.Equals(Profile.AAC_LD)) + { + _lagUpdate = input.ReadBool(); + if (_lagUpdate) _lag = input.ReadBits(10); + } + else _lag = input.ReadBits(11); + if (_lag > _frameLength << 1) throw new AACException("LTP lag too large: " + _lag); + _coef = input.ReadBits(3); + + int windowCount = info.GetWindowCount(); + + if (info.IsEightShortFrame()) + { + _shortUsed = new bool[windowCount]; + _shortLagPresent = new bool[windowCount]; + _shortLag = new int[windowCount]; + for (int w = 0; w < windowCount; w++) + { + if (_shortUsed[w] = input.ReadBool()) + { + _shortLagPresent[w] = input.ReadBool(); + if (_shortLagPresent[w]) _shortLag[w] = input.ReadBits(4); + } + } + } + else + { + _lastBand = Math.Min(info.GetMaxSFB(), Constants.MAX_LTP_SFB); + _longUsed = new bool[_lastBand]; + + for (int i = 0; i < _lastBand; i++) + { + _longUsed[i] = input.ReadBool(); + } + } + } + + public void SetPredictionUnused(int sfb) + { + if (_longUsed != null) _longUsed[sfb] = false; + } + + public void Process(ICStream ics, float[] data, FilterBank filterBank, SampleFrequency sf) + { + if (!_isPresent) + return; + + ICSInfo info = ics.GetInfo(); + + if (!info.IsEightShortFrame()) + { + int samples = _frameLength << 1; + float[] input = new float[2048]; + float[] output = new float[2048]; + + for (int i = 0; i < samples; i++) + { + input[i] = _states[samples + i - _lag] * CODEBOOK[_coef]; + } + + filterBank.ProcessLTP(info.GetWindowSequence(), info.GetWindowShape(ICSInfo.CURRENT), + info.GetWindowShape(ICSInfo.PREVIOUS), input, output); + + if (ics.IsTNSDataPresent()) ics.GetTNS().Process(ics, output, sf, true); + + int[] swbOffsets = info.GetSWBOffsets(); + int swbOffsetMax = info.GetSWBOffsetMax(); + int low, high, bin; + for (int sfb = 0; sfb < _lastBand; sfb++) + { + if (_longUsed[sfb]) + { + low = swbOffsets[sfb]; + high = Math.Min(swbOffsets[sfb + 1], swbOffsetMax); + + for (bin = low; bin < high; bin++) + { + data[bin] += output[bin]; + } + } + } + } + } + + public void UpdateState(float[] time, float[] overlap, Profile profile) + { + int i; + if (profile.Equals(Profile.AAC_LD)) + { + for (i = 0; i < _frameLength; i++) + { + _states[i] = _states[i + _frameLength]; + _states[_frameLength + i] = _states[i + _frameLength * 2]; + _states[_frameLength * 2 + i] = (int)Math.Round(time[i]); + _states[_frameLength * 3 + i] = (int)Math.Round(overlap[i]); + } + } + else + { + for (i = 0; i < _frameLength; i++) + { + _states[i] = _states[i + _frameLength]; + _states[_frameLength + i] = (int)Math.Round(time[i]); + _states[_frameLength * 2 + i] = (int)Math.Round(overlap[i]); + } + } + _isPresent = false; + } + + public static bool IsLTPProfile(Profile profile) + { + return profile.Equals(Profile.AAC_LTP) || profile.Equals(Profile.ER_AAC_LTP) || profile.Equals(Profile.AAC_LD); + } + + public void Copy(LTPrediction ltp) + { + Array.Copy(ltp._states, 0, _states, 0, _states.Length); + _coef = ltp._coef; + _lag = ltp._lag; + _lastBand = ltp._lastBand; + _lagUpdate = ltp._lagUpdate; + _shortUsed = ltp._shortUsed.ToArray(); + _shortLagPresent = ltp._shortLagPresent.ToArray(); + _shortLag = ltp._shortLag.ToArray(); + _longUsed = ltp._longUsed.ToArray(); + } + } +} diff --git a/SharpJaad.AAC/Tools/MS.cs b/SharpJaad.AAC/Tools/MS.cs new file mode 100644 index 0000000..77bebb6 --- /dev/null +++ b/SharpJaad.AAC/Tools/MS.cs @@ -0,0 +1,42 @@ +using SharpJaad.AAC.Huffman; +using SharpJaad.AAC.Syntax; + +namespace SharpJaad.AAC.Tools +{ + public class MS + { + public static void Process(CPE cpe, float[] specL, float[] specR) + { + ICStream ics = cpe.GetLeftChannel(); + ICSInfo info = ics.GetInfo(); + int[] offsets = info.GetSWBOffsets(); + int windowGroups = info.GetWindowGroupCount(); + int maxSFB = info.GetMaxSFB(); + int[] sfbCBl = ics.getSfbCB(); + int[] sfbCBr = cpe.GetRightChannel().getSfbCB(); + int groupOff = 0; + int g, i, w, j, idx = 0; + + for (g = 0; g < windowGroups; g++) + { + for (i = 0; i < maxSFB; i++, idx++) + { + if (cpe.IsMSUsed(idx) && sfbCBl[idx] < HCB.NOISE_HCB && sfbCBr[idx] < HCB.NOISE_HCB) + { + for (w = 0; w < info.GetWindowGroupLength(g); w++) + { + int off = groupOff + w * 128 + offsets[i]; + for (j = 0; j < offsets[i + 1] - offsets[i]; j++) + { + float t = specL[off + j] - specR[off + j]; + specL[off + j] += specR[off + j]; + specR[off + j] = t; + } + } + } + } + groupOff += info.GetWindowGroupLength(g) * 128; + } + } + } +} diff --git a/SharpJaad.AAC/Tools/MSMask.cs b/SharpJaad.AAC/Tools/MSMask.cs new file mode 100644 index 0000000..52d3eb5 --- /dev/null +++ b/SharpJaad.AAC/Tools/MSMask.cs @@ -0,0 +1,10 @@ +namespace SharpJaad.AAC.Tools +{ + public enum MSMask : int + { + TYPE_ALL_0 = 0, + TYPE_USED = 1, + TYPE_ALL_1 = 2, + TYPE_RESERVED = 3 + } +} diff --git a/SharpJaad.AAC/Tools/TNS.cs b/SharpJaad.AAC/Tools/TNS.cs new file mode 100644 index 0000000..3133250 --- /dev/null +++ b/SharpJaad.AAC/Tools/TNS.cs @@ -0,0 +1,63 @@ +using SharpJaad.AAC.Syntax; + +namespace SharpJaad.AAC.Tools +{ + public class TNS + { + private static int TNS_MAX_ORDER = 20; + private static int[] SHORT_BITS = { 1, 4, 3 }, LONG_BITS = { 2, 6, 5 }; + //bitstream + private int[] _nFilt; + private int[,] _length, _order; + private bool[,] _direction; + private float[,,] _coef; + + public TNS() + { + _nFilt = new int[8]; + _length = new int[8, 4]; + _direction = new bool[8, 4]; + _order = new int[8, 4]; + _coef = new float[8, 4, TNS_MAX_ORDER]; + } + + public void Decode(BitStream input, ICSInfo info) + { + int windowCount = info.GetWindowCount(); + int[] bits = info.IsEightShortFrame() ? SHORT_BITS : LONG_BITS; + + int w, i, filt, coefLen, coefRes, coefCompress, tmp; + for (w = 0; w < windowCount; w++) + { + if ((_nFilt[w] = input.ReadBits(bits[0])) != 0) + { + coefRes = input.ReadBit(); + + for (filt = 0; filt < _nFilt[w]; filt++) + { + _length[w, filt] = input.ReadBits(bits[1]); + + if ((_order[w, filt] = input.ReadBits(bits[2])) > 20) throw new AACException("TNS filter out of range: " + _order[w, filt]); + else if (_order[w, filt] != 0) + { + _direction[w, filt] = input.ReadBool(); + coefCompress = input.ReadBit(); + coefLen = coefRes + 3 - coefCompress; + tmp = 2 * coefCompress + coefRes; + + for (i = 0; i < _order[w, filt]; i++) + { + _coef[w, filt, i] = TNSTables.TNS_TABLES[tmp][input.ReadBits(coefLen)]; + } + } + } + } + } + } + + public void Process(ICStream ics, float[] spec, SampleFrequency sf, bool decode) + { + //TODO... + } + } +} diff --git a/SharpJaad.AAC/Tools/TNSTables.cs b/SharpJaad.AAC/Tools/TNSTables.cs new file mode 100644 index 0000000..26b27dd --- /dev/null +++ b/SharpJaad.AAC/Tools/TNSTables.cs @@ -0,0 +1,31 @@ +namespace SharpJaad.AAC.Tools +{ + public static class TNSTables + { + public static float[] TNS_COEF_1_3 = + { + 0.00000000f, -0.43388373f, 0.64278758f, 0.34202015f, + }; + public static float[] TNS_COEF_0_3 = + { + 0.00000000f, -0.43388373f, -0.78183150f, -0.97492790f, + 0.98480773f, 0.86602539f, 0.64278758f, 0.34202015f, + }; + public static float[] TNS_COEF_1_4 = + { + 0.00000000f, -0.20791170f, -0.40673664f, -0.58778524f, + 0.67369562f, 0.52643216f, 0.36124167f, 0.18374951f, + }; + public static float[] TNS_COEF_0_4 = + { + 0.00000000f, -0.20791170f, -0.40673664f, -0.58778524f, + -0.74314481f, -0.86602539f, -0.95105654f, -0.99452192f, + 0.99573416f, 0.96182561f, 0.89516330f, 0.79801720f, + 0.67369562f, 0.52643216f, 0.36124167f, 0.18374951f, + }; + public static float[][] TNS_TABLES = + { + TNS_COEF_0_3, TNS_COEF_0_4, TNS_COEF_1_3, TNS_COEF_1_4 + }; + } +} diff --git a/SharpJaad.AAC/Transport/ADIFHeader.cs b/SharpJaad.AAC/Transport/ADIFHeader.cs new file mode 100644 index 0000000..5ae9804 --- /dev/null +++ b/SharpJaad.AAC/Transport/ADIFHeader.cs @@ -0,0 +1,67 @@ +using SharpJaad.AAC.Syntax; + +namespace SharpJaad.AAC.Transport +{ + public sealed class ADIFHeader + { + private const long ADIF_ID = 0x41444946; //'ADIF' + private long _id; + private bool _copyrightIDPresent; + private byte[] _copyrightID; + private bool _originalCopy, _home, _bitstreamType; + private int _bitrate; + private int _pceCount; + private int[] _adifBufferFullness; + private PCE[] _pces; + + public static bool IsPresent(BitStream input) + { + return input.PeekBits(32) == ADIF_ID; + } + + private ADIFHeader() + { + _copyrightID = new byte[9]; + } + + public static ADIFHeader ReadHeader(BitStream input) + { + ADIFHeader h = new ADIFHeader(); + h.Decode(input); + return h; + } + + private void Decode(BitStream input) + { + int i; + _id = input.ReadBits(32); //'ADIF' + _copyrightIDPresent = input.ReadBool(); + if (_copyrightIDPresent) + { + for (i = 0; i < 9; i++) + { + _copyrightID[i] = (byte)input.ReadBits(8); + } + } + _originalCopy = input.ReadBool(); + _home = input.ReadBool(); + _bitstreamType = input.ReadBool(); + _bitrate = input.ReadBits(23); + _pceCount = input.ReadBits(4) + 1; + _pces = new PCE[_pceCount]; + _adifBufferFullness = new int[_pceCount]; + for (i = 0; i < _pceCount; i++) + { + if (_bitstreamType) _adifBufferFullness[i] = -1; + else _adifBufferFullness[i] = input.ReadBits(20); + _pces[i] = new PCE(); + _pces[i].Decode(input); + } + } + + public PCE GetFirstPCE() + { + return _pces[0]; + } + } +} diff --git a/Tests/Integration/StreamPipelineTests.cs b/Tests/Integration/StreamPipelineTests.cs new file mode 100644 index 0000000..1c2f175 --- /dev/null +++ b/Tests/Integration/StreamPipelineTests.cs @@ -0,0 +1,198 @@ +#if DEBUG + +using System.Diagnostics; +using System.Net; +using System.Net.Http.Headers; +using LMP.Core.Audio.Http; +using LMP.Core.Services; +using LMP.Core.Youtube.Videos; +using LMP.Core.Youtube.Videos.Streams; +using Microsoft.Extensions.DependencyInjection; + +namespace LMP.Tests.Integration; + +/// +/// End-to-end тесты полного pipeline: видео → стрим → дешифровка → воспроизведение. +/// +public static class StreamPipelineTests +{ + private static readonly string[] TestVideoIds = + [ + "dQw4w9WgXcQ", // Never Gonna Give You Up + "jNQXAC9IVRw", // Me at the zoo (первое видео YouTube) + "kJQP7kiw5Fk", // Despacito + ]; + + // ══════════════════════════════════════════════════════════════════ + // STREAM RESOLUTION + // ══════════════════════════════════════════════════════════════════ + + public static async Task TestStreamResolutionAsync(IServiceProvider services) + { + var youtube = services.GetRequiredService().GetClient(); + var videoId = TestVideoIds[0]; + + using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(30)); + + var sw = Stopwatch.StartNew(); + var manifest = await youtube.Videos.Streams.GetManifestAsync( + VideoId.Parse(videoId), cts.Token); + sw.Stop(); + + var audioStreams = manifest.GetAudioOnlyStreams().ToList(); + Assert(audioStreams.Count > 0, "No audio streams found"); + + var best = audioStreams.GetWithHighestBitrate(); + Log.Info($"[Test] Resolved {audioStreams.Count} streams in {sw.ElapsedMilliseconds}ms"); + Log.Info($"[Test] Best: itag={best.Itag}, {best.AudioCodec}, {best.Bitrate.KiloBitsPerSecond:F0}kbps"); + + // Проверяем URL + using var request = new HttpRequestMessage(HttpMethod.Head, best.Url); + using var response = await SharedHttpClient.Instance.SendAsync( + request, HttpCompletionOption.ResponseHeadersRead, cts.Token); + + Assert(response.IsSuccessStatusCode, + $"Stream URL failed: HTTP {(int)response.StatusCode}"); + } + + public static async Task TestMultiVideoAsync(IServiceProvider services) + { + var youtube = services.GetRequiredService().GetClient(); + + int success = 0; + int failed = 0; + + var options = new ParallelOptions { MaxDegreeOfParallelism = 2 }; + + await Parallel.ForEachAsync(TestVideoIds, options, async (videoId, ct) => + { + try + { + var manifest = await youtube.Videos.Streams.GetManifestAsync( + VideoId.Parse(videoId), ct); + + var stream = manifest.GetAudioOnlyStreams().GetWithHighestBitrate(); + + using var request = new HttpRequestMessage(HttpMethod.Head, stream.Url); + using var response = await SharedHttpClient.Instance.SendAsync( + request, HttpCompletionOption.ResponseHeadersRead, ct); + + if (response.IsSuccessStatusCode) + { + Interlocked.Increment(ref success); + Log.Info($"[Test] ✓ {videoId} (itag={stream.Itag})"); + } + else + { + Interlocked.Increment(ref failed); + Log.Warn($"[Test] ✗ {videoId}: HTTP {(int)response.StatusCode}"); + } + } + catch (Exception ex) + { + Interlocked.Increment(ref failed); + Log.Error($"[Test] ✗ {videoId}: {ex.Message}"); + } + }); + + Assert(failed == 0, $"Multi-video: {failed}/{TestVideoIds.Length} failed"); + Log.Info($"[Test] Multi-video: {success}/{TestVideoIds.Length} passed"); + } + + // ══════════════════════════════════════════════════════════════════ + // AUDIO DOWNLOAD + // ══════════════════════════════════════════════════════════════════ + + public static async Task TestAudioDownloadAsync(IServiceProvider services) + { + var youtube = services.GetRequiredService().GetClient(); + var videoId = TestVideoIds[0]; + + using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(30)); + + var manifest = await youtube.Videos.Streams.GetManifestAsync( + VideoId.Parse(videoId), cts.Token); + + var stream = manifest.GetAudioOnlyStreams().GetWithHighestBitrate(); + + // Скачиваем первые 64KB + using var request = new HttpRequestMessage(HttpMethod.Get, stream.Url); + request.Headers.Range = new RangeHeaderValue(0, 65535); + + using var response = await SharedHttpClient.Instance.SendAsync( + request, HttpCompletionOption.ResponseHeadersRead, cts.Token); + + Assert(response.IsSuccessStatusCode || response.StatusCode == HttpStatusCode.PartialContent, + $"Download failed: HTTP {(int)response.StatusCode}"); + + var buffer = await response.Content.ReadAsByteArrayAsync(cts.Token); + + // Проверяем magic bytes + bool isWebM = buffer.Length >= 4 && + buffer[0] == 0x1A && buffer[1] == 0x45 && buffer[2] == 0xDF && buffer[3] == 0xA3; + bool isMp4 = buffer.Length >= 8 && + buffer[4] == 'f' && buffer[5] == 't' && buffer[6] == 'y' && buffer[7] == 'p'; + + Assert(isWebM || isMp4, + $"Invalid format. Magic: {BitConverter.ToString(buffer, 0, Math.Min(8, buffer.Length))}"); + + Log.Info($"[Test] Downloaded {buffer.Length} bytes, format: {(isWebM ? "WebM/Opus" : "MP4/AAC")}"); + } + + // ══════════════════════════════════════════════════════════════════ + // FULL PIPELINE (sig + n-token) + // ══════════════════════════════════════════════════════════════════ + + public static async Task TestFullPipelineAsync(IServiceProvider services, string videoId = "dQw4w9WgXcQ") + { + Log.Info($"[Test] Full pipeline for {videoId}..."); + + var youtube = services.GetRequiredService().GetClient(); + + using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(60)); + + var sw = Stopwatch.StartNew(); + var manifest = await youtube.Videos.Streams.GetManifestAsync( + VideoId.Parse(videoId), cts.Token); + sw.Stop(); + + var audioStreams = manifest.GetAudioOnlyStreams().ToList(); + Assert(audioStreams.Count > 0, "No audio streams"); + + Log.Info($"[Test] Got {audioStreams.Count} streams in {sw.ElapsedMilliseconds}ms"); + + // Проверяем ВСЕ стримы + int verified = 0; + foreach (var stream in audioStreams.Take(5)) + { + using var request = new HttpRequestMessage(HttpMethod.Head, stream.Url); + using var response = await SharedHttpClient.Instance.SendAsync( + request, HttpCompletionOption.ResponseHeadersRead, cts.Token); + + if (response.IsSuccessStatusCode) + { + verified++; + Log.Info($"[Test] ✓ itag={stream.Itag} ({stream.AudioCodec}, " + + $"{stream.Bitrate.KiloBitsPerSecond:F0}kbps)"); + } + else + { + Log.Warn($"[Test] ✗ itag={stream.Itag}: HTTP {(int)response.StatusCode}"); + } + } + + Assert(verified > 0, "All stream URLs failed (sig decryption broken?)"); + Log.Info($"[Test] Pipeline OK: {verified}/{Math.Min(5, audioStreams.Count)} verified"); + } + + // ══════════════════════════════════════════════════════════════════ + // HELPERS + // ══════════════════════════════════════════════════════════════════ + + private static void Assert(bool condition, string message) + { + if (!condition) throw new Exception(message); + } +} + +#endif \ No newline at end of file diff --git a/Tests/ManualTests.cs b/Tests/ManualTests.cs new file mode 100644 index 0000000..6de31b5 --- /dev/null +++ b/Tests/ManualTests.cs @@ -0,0 +1,188 @@ +#if DEBUG + +using System.Diagnostics; +using LMP.Tests.Unit; +using LMP.Tests.Integration; + +namespace LMP.Tests; + +/// +/// Точка входа для всех тестов. +/// Запуск: F10 в Debug режиме. +/// +public static class ManualTests +{ + public static async Task RunAllAsync() + { + var sw = Stopwatch.StartNew(); + + Console.WriteLine("\n" + new string('═', 70)); + Console.WriteLine(" LMP TEST SUITE"); + Console.WriteLine(new string('═', 70) + "\n"); + + var results = new TestResults(); + + // ══════════════════════════════════════════════════════════════ + // UNIT TESTS (no network) + // ══════════════════════════════════════════════════════════════ + + Console.WriteLine("▶ UNIT TESTS (no network)\n"); + + await results.RunAsync("SigCipher.Manifest.Serialize", + SigCipherTests.TestManifestSerializationAsync); + + await results.RunAsync("SigCipher.Manifest.Decipher", + SigCipherTests.TestManifestDecipherAsync); + + await results.RunAsync("SigCipher.Solver.KnownPatterns", + SigCipherTests.TestSolverKnownPatternsAsync); + + await results.RunAsync("SigCipher.Solver.RandomInputs", + SigCipherTests.TestSolverRandomInputsAsync); + + await results.RunAsync("SigCipher.Extractor.ParseDictArray", + SigCipherTests.TestParseDictArrayAsync); + + await results.RunAsync("SigCipher.Extractor.DetectMethods", + SigCipherTests.TestDetectMethodsAsync); + + await results.RunAsync("NToken.FunctionDetection", + NTokenTests.TestFunctionDetectionAsync); + + await results.RunAsync("NToken.BundleExtraction", + NTokenTests.TestBundleExtractionAsync); + + await results.RunAsync("Cache.MemoryCache", + CacheTests.TestMemoryCacheAsync); + + await results.RunAsync("Cache.DiskRoundtrip", + CacheTests.TestDiskRoundtripAsync); + + await results.RunAsync("SigSolver.AllKnownPatterns", +SigCipherSolverTests.TestAllKnownPatternsAsync); + + await results.RunAsync("SigSolver.AllSwapValues", + SigCipherSolverTests.TestAllSwapValuesAsync); + + await results.RunAsync("SigSolver.DoubleSwapRange", + SigCipherSolverTests.TestDoubleSwapRangeAsync); + + await results.RunAsync("SigSolver.SignatureLengths", + SigCipherSolverTests.TestVariousSignatureLengthsAsync); + + await results.RunAsync("SigSolver.SpliceValues", + SigCipherSolverTests.TestAllSpliceValuesAsync); + + await results.RunAsync("SigSolver.RealisticSigs", + SigCipherSolverTests.TestRealisticSignaturesAsync); + + await results.RunAsync("SigSolver.RandomCombos", + SigCipherSolverTests.TestRandomCombinationsAsync); + + await results.RunAsync("SigSolver.EdgeCases", + SigCipherSolverTests.TestEdgeCasesAsync); + + await results.RunAsync("SigSolver.Parallel", + SigCipherSolverTests.TestParallelSolverAsync); + + await results.RunAsync("SigSolver.Benchmark", + SigCipherSolverTests.BenchmarkSolverAsync); + + // ══════════════════════════════════════════════════════════════ + // INTEGRATION TESTS (network required) + // ══════════════════════════════════════════════════════════════ + + Console.WriteLine("\n▶ INTEGRATION TESTS (network required)\n"); + + await results.RunAsync("NToken.LiveDecryption", + () => NTokenTests.TestLiveDecryptionAsync(Program.Services)); + + await results.RunAsync("NToken.CacheHit", + () => NTokenTests.TestCacheHitAsync(Program.Services)); + + await results.RunAsync("SigCipher.LiveExtraction", + () => SigCipherTests.TestLiveExtractionAsync(Program.Services)); + + await results.RunAsync("SigCipher.LiveDecryption", + () => SigCipherTests.TestLiveDecryptionAsync(Program.Services)); + + await results.RunAsync("Pipeline.StreamResolution", + () => StreamPipelineTests.TestStreamResolutionAsync(Program.Services)); + + await results.RunAsync("Pipeline.MultiVideo", + () => StreamPipelineTests.TestMultiVideoAsync(Program.Services)); + + await results.RunAsync("Pipeline.AudioDownload", + () => StreamPipelineTests.TestAudioDownloadAsync(Program.Services)); + + // ══════════════════════════════════════════════════════════════ + // RESULTS + // ══════════════════════════════════════════════════════════════ + + sw.Stop(); + Console.WriteLine("\n" + new string('═', 70)); + Console.WriteLine($" RESULTS: {results.Passed} passed, {results.Failed} failed " + + $"({sw.Elapsed.TotalSeconds:F1}s)"); + Console.WriteLine(new string('═', 70) + "\n"); + + if (results.Failed > 0) + { + Console.WriteLine("❌ FAILED TESTS:"); + foreach (var failure in results.Failures) + Console.WriteLine($" • {failure}"); + } + } + + // ══════════════════════════════════════════════════════════════════ + // QUICK TESTS (для отдельного запуска) + // ══════════════════════════════════════════════════════════════════ + + /// Быстрый тест N-Token (самый важный). + public static Task TestNTokenQuickAsync() => + NTokenTests.TestLiveDecryptionAsync(Program.Services); + + /// Быстрый тест Sig Cipher. + public static Task TestSigCipherQuickAsync() => + SigCipherTests.TestLiveDecryptionAsync(Program.Services); + + /// Полный pipeline тест. + public static Task TestSigCipherFullAsync(string videoId = "dQw4w9WgXcQ") => + StreamPipelineTests.TestFullPipelineAsync(Program.Services, videoId); + + /// Полный тест солвера. + public static Task TestSolverFullAsync() => + SigCipherSolverTests.RunAllAsync(); + + /// Benchmark N-Token. + public static Task BenchmarkNTokenAsync() => + NTokenTests.BenchmarkAsync(Program.Services); +} + +/// Аккумулятор результатов тестов. +file sealed class TestResults +{ + public int Passed { get; private set; } + public int Failed { get; private set; } + public List Failures { get; } = []; + + public async Task RunAsync(string name, Func test) + { + var sw = Stopwatch.StartNew(); + try + { + await test(); + sw.Stop(); + Console.WriteLine($" ✓ {name} ({sw.ElapsedMilliseconds}ms)"); + Passed++; + } + catch (Exception ex) + { + sw.Stop(); + Console.WriteLine($" ✗ {name}: {ex.Message}"); + Failures.Add($"{name}: {ex.Message}"); + Failed++; + } + } +} + +#endif \ No newline at end of file diff --git a/Tests/Unit/CacheTests.cs b/Tests/Unit/CacheTests.cs new file mode 100644 index 0000000..fc76f0e --- /dev/null +++ b/Tests/Unit/CacheTests.cs @@ -0,0 +1,107 @@ +#if DEBUG + +using LMP.Core.Youtube.Bridge.Common; +using LMP.Core.Youtube.Bridge.SigCipher; + +namespace LMP.Tests.Unit; + +/// +/// Unit-тесты для кэширования. +/// +public static class CacheTests +{ + public static Task TestMemoryCacheAsync() + { + var cache = new DecryptorCache( + Path.GetTempFileName(), + maxMemory: 100, + maxDisk: 50 + ); + + // Set & Get + cache.Set("key1", "value1"); + Assert(cache.TryGet("key1", out var v1) && v1 == "value1", "Get failed"); + + // Missing key + Assert(!cache.TryGet("nonexistent", out _), "Found nonexistent key"); + + // Overwrite + cache.Set("key1", "value2"); + Assert(cache.TryGet("key1", out var v2) && v2 == "value2", "Overwrite failed"); + + // Count + cache.Set("key2", "value2"); + cache.Set("key3", "value3"); + Assert(cache.Count == 3, $"Count: {cache.Count}"); + + // Clear + cache.Clear(); + Assert(cache.Count == 0, "Clear failed"); + + return Task.CompletedTask; + } + + public static async Task TestDiskRoundtripAsync() + { + var tempFile = Path.GetTempFileName(); + + try + { + // Write + var writeCache = new DecryptorCache(tempFile, 100, 50); + for (int i = 0; i < 10; i++) + writeCache.Set($"key{i}", $"value{i}"); + + await writeCache.SaveAsync(); + + // Read + var readCache = new DecryptorCache(tempFile, 100, 50); + await readCache.LoadAsync("test_version"); + + // Проверяем (может быть 0 если version mismatch) + // Это ожидаемое поведение + Log.Debug($"[Test] Cache roundtrip: wrote 10, read {readCache.Count}"); + } + finally + { + if (File.Exists(tempFile)) + File.Delete(tempFile); + } + } + + public static Task TestSigCipherManifestCacheAsync() + { + var ops = new List + { + new(SigCipherOpType.Swap, 51), + new(SigCipherOpType.Reverse, 0), + new(SigCipherOpType.Swap, 44), + new(SigCipherOpType.Splice, 2), + }; + + var manifest = new SigCipherManifest("player_v123", ops, "test"); + + // Roundtrip + var serialized = manifest.Serialize(); + var restored = SigCipherManifest.Deserialize(serialized); + + Assert(restored is not null, "Deserialization failed"); + Assert(restored!.PlayerVersion == manifest.PlayerVersion, "Version mismatch"); + + // Проверяем что дешифровка идентична + const string testSig = "Q=wwXNghQ_T04B8uJpMZ5sWyAJIXNs3cqJRjYS6AJrTK8CQIAA8761Wv9lwNxVV"; + var result1 = manifest.Decipher(testSig); + var result2 = restored.Decipher(testSig); + + Assert(result1 == result2, "Decipher mismatch after roundtrip"); + + return Task.CompletedTask; + } + + private static void Assert(bool condition, string message) + { + if (!condition) throw new Exception(message); + } +} + +#endif \ No newline at end of file diff --git a/Tests/Unit/NTokenTests.cs b/Tests/Unit/NTokenTests.cs new file mode 100644 index 0000000..08adf73 --- /dev/null +++ b/Tests/Unit/NTokenTests.cs @@ -0,0 +1,147 @@ +#if DEBUG + +using System.Diagnostics; +using LMP.Core.Youtube.Bridge.Common; +using LMP.Core.Youtube.Bridge.NToken; +using Microsoft.Extensions.DependencyInjection; + +namespace LMP.Tests.Unit; + +/// +/// Unit и integration тесты для N-Token системы. +/// +public static class NTokenTests +{ + private const string TestToken = "WDZxqubC-kfdqV5cl60"; + + // ══════════════════════════════════════════════════════════════════ + // UNIT TESTS (no network) + // ══════════════════════════════════════════════════════════════════ + + public static Task TestFunctionDetectionAsync() + { + // Симуляция маркеров n-token функции + const string fakeJs = """ + var someCode = function() { return 1; }; + var KM = function(a, b) { + var c = [-1552975130, -306113009]; + // ... decryption logic ... + return a; + }; + var otherCode = 2; + """; + + // Проверяем что маркеры обнаруживаются + Assert(fakeJs.Contains("-1552975130"), "Primary marker missing"); + Assert(fakeJs.Contains("-306113009"), "Secondary marker missing"); + + // Функция перед маркерами должна быть найдена + int markerIdx = fakeJs.IndexOf("-1552975130"); + Assert(markerIdx > 0, "Marker not found"); + + var contextBefore = fakeJs[..markerIdx]; + Assert(contextBefore.Contains("KM"), "Function name not in context"); + + return Task.CompletedTask; + } + + public static Task TestBundleExtractionAsync() + { + // Тест JsFunctionExtractor базовой логики + const string simpleJs = """ + var helper = function(x) { return x + 1; }; + var main = function(a) { + return helper(a) * 2; + }; + """; + + var bundle = JsFunctionExtractor.ExtractBundle(simpleJs, "main"); + + // Bundle может быть null для слишком простого кода + // Главное - не exception + Log.Debug($"[Test] Bundle extraction: {(bundle is not null ? $"{bundle.Length} chars" : "null (expected for simple code)")}"); + + return Task.CompletedTask; + } + + // ══════════════════════════════════════════════════════════════════ + // LIVE TESTS (require network) + // ══════════════════════════════════════════════════════════════════ + + public static async Task TestLiveDecryptionAsync(IServiceProvider services) + { + var decryptor = services.GetRequiredService(); + + var sw = Stopwatch.StartNew(); + var result = await decryptor.DecryptAsync(TestToken); + sw.Stop(); + + Assert(!string.IsNullOrEmpty(result), "Decryption returned empty"); + Assert(result != TestToken, "Decryption returned unchanged token"); + Assert(!result.Contains("undefined"), "Result contains 'undefined'"); + + Log.Info($"[Test] N-Token decrypted in {sw.ElapsedMilliseconds}ms: {TestToken} → {result}"); + } + + public static async Task TestCacheHitAsync(IServiceProvider services) + { + var decryptor = services.GetRequiredService(); + + // Первый вызов (может быть cache miss) + var first = await decryptor.DecryptAsync(TestToken); + + // Второй вызов (должен быть cache hit) + var sw = Stopwatch.StartNew(); + var second = await decryptor.DecryptAsync(TestToken); + sw.Stop(); + + Assert(first == second, "Cache returned different result"); + Assert(sw.ElapsedMilliseconds < 5, $"Cache hit too slow: {sw.ElapsedMilliseconds}ms (expected <5ms)"); + + Log.Info($"[Test] Cache hit: {sw.ElapsedMilliseconds}ms"); + } + + public static async Task BenchmarkAsync(IServiceProvider services) + { + var decryptor = services.GetRequiredService(); + + // Warm up + await decryptor.DecryptAsync(TestToken); + + const int iterations = 100; + var tokens = Enumerable.Range(0, iterations) + .Select(i => $"test_token_{i:D3}_{Guid.NewGuid():N}"[..20]) + .ToArray(); + + // Benchmark cache misses (первый раз для каждого токена) + var sw = Stopwatch.StartNew(); + foreach (var token in tokens) + await decryptor.DecryptAsync(token); + sw.Stop(); + + var avgMiss = sw.ElapsedMilliseconds / (double)iterations; + Log.Info($"[Benchmark] Cache miss avg: {avgMiss:F2}ms"); + + // Benchmark cache hits + sw.Restart(); + foreach (var token in tokens) + await decryptor.DecryptAsync(token); + sw.Stop(); + + var avgHit = sw.ElapsedMilliseconds / (double)iterations; + Log.Info($"[Benchmark] Cache hit avg: {avgHit:F3}ms"); + + Assert(avgHit < 1, $"Cache hit too slow: {avgHit:F3}ms"); + } + + // ══════════════════════════════════════════════════════════════════ + // HELPERS + // ══════════════════════════════════════════════════════════════════ + + private static void Assert(bool condition, string message) + { + if (!condition) throw new Exception(message); + } +} + +#endif \ No newline at end of file diff --git a/Tests/Unit/SigCipherSolverTests.cs b/Tests/Unit/SigCipherSolverTests.cs new file mode 100644 index 0000000..10946c0 --- /dev/null +++ b/Tests/Unit/SigCipherSolverTests.cs @@ -0,0 +1,545 @@ +#if DEBUG + +using System.Diagnostics; +using LMP.Core.Youtube.Bridge.SigCipher; + +namespace LMP.Tests.Unit; + +/// +/// Исчерпывающие тесты SigCipherSolver. +/// Покрывает все паттерны, граничные случаи и стресс-тесты. +/// +public static class SigCipherSolverTests +{ + /// Стандартная YouTube-подпись: 105 символов. + private static readonly string StandardSignature = + "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz" + + "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnop" + + "qrstu"; + + /// Реалистичная подпись с символами YouTube. + private static readonly string RealisticSignature = + "Q=wwXNghQ_T04B8uJpMZ5sWyAJIXNs3cqJRjYS6AJrTK8CQIAA" + + "8761Wv9lwNxVVHqF2m1E5dR3TkGpOcLbIfUz0aDSeYWhXiMnKJ"; + + // ═══════════════════════════════════════════════════════════════ + // 1. КАЖДЫЙ ПАТТЕРН ОТДЕЛЬНО + // ═══════════════════════════════════════════════════════════════ + + /// Тестирует каждый известный паттерн YouTube отдельно. + public static Task TestAllKnownPatternsAsync() + { + var patterns = new (string Name, SigCipherOperation[] Ops)[] + { + ("swap→reverse→swap→splice(1)", [ + new(SigCipherOpType.Swap, 64), + new(SigCipherOpType.Reverse, 0), + new(SigCipherOpType.Swap, 56), + new(SigCipherOpType.Splice, 1), + ]), + ("swap→swap→reverse→splice(1)", [ + new(SigCipherOpType.Swap, 51), + new(SigCipherOpType.Swap, 44), + new(SigCipherOpType.Reverse, 0), + new(SigCipherOpType.Splice, 1), + ]), + ("reverse→swap→swap→splice(2)", [ + new(SigCipherOpType.Reverse, 0), + new(SigCipherOpType.Swap, 48), + new(SigCipherOpType.Swap, 67), + new(SigCipherOpType.Splice, 2), + ]), + ("reverse→swap→splice(2)", [ + new(SigCipherOpType.Reverse, 0), + new(SigCipherOpType.Swap, 48), + new(SigCipherOpType.Splice, 2), + ]), + ("swap→reverse→splice(1)", [ + new(SigCipherOpType.Swap, 72), + new(SigCipherOpType.Reverse, 0), + new(SigCipherOpType.Splice, 1), + ]), + ("swap→splice(3)", [ + new(SigCipherOpType.Swap, 55), + new(SigCipherOpType.Splice, 3), + ]), + ("reverse→splice(1)", [ + new(SigCipherOpType.Reverse, 0), + new(SigCipherOpType.Splice, 1), + ]), + ("swap→swap→swap→splice(1)", [ + new(SigCipherOpType.Swap, 42), + new(SigCipherOpType.Swap, 67), + new(SigCipherOpType.Swap, 53), + new(SigCipherOpType.Splice, 1), + ]), + ("swap→reverse→swap→swap→splice(2)", [ + new(SigCipherOpType.Swap, 60), + new(SigCipherOpType.Reverse, 0), + new(SigCipherOpType.Swap, 45), + new(SigCipherOpType.Swap, 71), + new(SigCipherOpType.Splice, 2), + ]), + }; + + int passed = 0; + int failed = 0; + + foreach (var (name, ops) in patterns) + { + var manifest = new SigCipherManifest("test", ops, "test"); + var encrypted = StandardSignature; + var decrypted = manifest.Decipher(encrypted); + + var sw = Stopwatch.StartNew(); + var solved = SigCipherSolver.Solve(encrypted, decrypted); + sw.Stop(); + + if (solved is not null) + { + var check = new SigCipherManifest("v", solved, "c").Decipher(encrypted); + if (check == decrypted) + { + passed++; + Log.Info($" ✓ {name} ({sw.ElapsedMilliseconds}ms)"); + continue; + } + } + + failed++; + Log.Error($" ✗ {name} ({sw.ElapsedMilliseconds}ms)"); + } + + Assert(failed == 0, $"Known patterns: {failed}/{patterns.Length} FAILED"); + Log.Info($"[SolverTest] All {passed} known patterns passed"); + + return Task.CompletedTask; + } + + // ═══════════════════════════════════════════════════════════════ + // 2. ДИАПАЗОН SWAP-ПАРАМЕТРОВ + // ═══════════════════════════════════════════════════════════════ + + /// + /// Проверяет что solver находит решение для ВСЕХ swap-значений 1-99. + /// Это критический тест: YouTube может использовать любое значение. + /// + public static Task TestAllSwapValuesAsync() + { + int passed = 0; + int failed = 0; + var failedValues = new List(); + + // Тестируем паттерн swap→reverse→splice с каждым возможным swap + for (int swapVal = 1; swapVal <= 99; swapVal++) + { + var ops = new SigCipherOperation[] + { + new(SigCipherOpType.Swap, swapVal), + new(SigCipherOpType.Reverse, 0), + new(SigCipherOpType.Splice, 1), + }; + + var manifest = new SigCipherManifest("v", ops, "t"); + var decrypted = manifest.Decipher(StandardSignature); + + var solved = SigCipherSolver.Solve(StandardSignature, decrypted); + if (solved is not null) + { + var check = new SigCipherManifest("v", solved, "c").Decipher(StandardSignature); + if (check == decrypted) { passed++; continue; } + } + + failed++; + failedValues.Add(swapVal); + } + + if (failedValues.Count > 0) + Log.Error($"[SolverTest] Failed swap values: {string.Join(", ", failedValues)}"); + + Assert(failed == 0, $"Swap values: {failed}/99 FAILED"); + Log.Info($"[SolverTest] All 99 swap values passed"); + + return Task.CompletedTask; + } + + /// + /// Тестирует двойные swap'ы с разными комбинациями параметров. + /// + public static Task TestDoubleSwapRangeAsync() + { + int passed = 0; + int failed = 0; + int total = 0; + + // Выборка: каждый 10-й swap для первого, каждый 5-й для второго + for (int s1 = 1; s1 <= 99; s1 += 10) + { + for (int s2 = 1; s2 <= 99; s2 += 5) + { + total++; + var ops = new SigCipherOperation[] + { + new(SigCipherOpType.Swap, s1), + new(SigCipherOpType.Reverse, 0), + new(SigCipherOpType.Swap, s2), + new(SigCipherOpType.Splice, 1), + }; + + var manifest = new SigCipherManifest("v", ops, "t"); + var decrypted = manifest.Decipher(StandardSignature); + var solved = SigCipherSolver.Solve(StandardSignature, decrypted); + + if (solved is not null) + { + var check = new SigCipherManifest("v", solved, "c") + .Decipher(StandardSignature); + if (check == decrypted) { passed++; continue; } + } + + failed++; + } + } + + Assert(failed == 0, $"Double swap: {failed}/{total} FAILED"); + Log.Info($"[SolverTest] Double swap: {passed}/{total} passed"); + + return Task.CompletedTask; + } + + // ═══════════════════════════════════════════════════════════════ + // 3. РАЗЛИЧНЫЕ ДЛИНЫ ПОДПИСИ + // ═══════════════════════════════════════════════════════════════ + + /// + /// YouTube подписи бывают 90-110 символов. Проверяем весь диапазон. + /// + public static Task TestVariousSignatureLengthsAsync() + { + const string alphabet = + "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_=+/"; + + var rng = new Random(12345); + int passed = 0; + int failed = 0; + + var ops = new SigCipherOperation[] + { + new(SigCipherOpType.Swap, 64), + new(SigCipherOpType.Reverse, 0), + new(SigCipherOpType.Swap, 56), + new(SigCipherOpType.Splice, 1), + }; + + for (int len = 85; len <= 115; len++) + { + var input = new string(Enumerable.Range(0, len) + .Select(_ => alphabet[rng.Next(alphabet.Length)]).ToArray()); + + var manifest = new SigCipherManifest("v", ops, "t"); + var decrypted = manifest.Decipher(input); + var solved = SigCipherSolver.Solve(input, decrypted); + + if (solved is not null) + { + var check = new SigCipherManifest("v", solved, "c").Decipher(input); + if (check == decrypted) { passed++; continue; } + } + + failed++; + Log.Warn($" Length {len}: FAILED"); + } + + Assert(failed == 0, $"Variable lengths: {failed}/31 FAILED"); + Log.Info($"[SolverTest] All {passed} signature lengths passed"); + + return Task.CompletedTask; + } + + // ═══════════════════════════════════════════════════════════════ + // 4. ВСЕ SPLICE-ЗНАЧЕНИЯ + // ═══════════════════════════════════════════════════════════════ + + public static Task TestAllSpliceValuesAsync() + { + int passed = 0; + + for (int splice = 1; splice <= 3; splice++) + { + var ops = new SigCipherOperation[] + { + new(SigCipherOpType.Swap, 52), + new(SigCipherOpType.Reverse, 0), + new(SigCipherOpType.Swap, 68), + new(SigCipherOpType.Splice, splice), + }; + + var manifest = new SigCipherManifest("v", ops, "t"); + var decrypted = manifest.Decipher(StandardSignature); + var solved = SigCipherSolver.Solve(StandardSignature, decrypted); + + Assert(solved is not null, $"Splice {splice}: not solved"); + var check = new SigCipherManifest("v", solved!, "c").Decipher(StandardSignature); + Assert(check == decrypted, $"Splice {splice}: verification failed"); + passed++; + } + + Log.Info($"[SolverTest] All {passed} splice values passed"); + return Task.CompletedTask; + } + + // ═══════════════════════════════════════════════════════════════ + // 5. РЕАЛИСТИЧНЫЕ ПОДПИСИ (как от YouTube API) + // ═══════════════════════════════════════════════════════════════ + + public static Task TestRealisticSignaturesAsync() + { + var ops = new SigCipherOperation[] + { + new(SigCipherOpType.Swap, 64), + new(SigCipherOpType.Reverse, 0), + new(SigCipherOpType.Swap, 56), + new(SigCipherOpType.Splice, 1), + }; + + var manifest = new SigCipherManifest("v", ops, "t"); + + // Тест с реалистичной подписью + var decrypted = manifest.Decipher(RealisticSignature); + var solved = SigCipherSolver.Solve(RealisticSignature, decrypted); + + Assert(solved is not null, "Realistic signature: not solved"); + var check = new SigCipherManifest("v", solved!, "c").Decipher(RealisticSignature); + Assert(check == decrypted, "Realistic signature: verification failed"); + + Log.Info("[SolverTest] Realistic signature passed"); + return Task.CompletedTask; + } + + // ═══════════════════════════════════════════════════════════════ + // 6. СТРЕСС-ТЕСТ (СЛУЧАЙНЫЕ КОМБИНАЦИИ) + // ═══════════════════════════════════════════════════════════════ + + /// + /// 100 случайных комбинаций паттернов и параметров. + /// Допускается не более 2% фейлов (из-за коллизий символов). + /// + public static Task TestRandomCombinationsAsync() + { + var rng = new Random(42); + const string alphabet = + "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_="; + + var patternTemplates = new SigCipherOpType[][] + { + [SigCipherOpType.Swap, SigCipherOpType.Reverse, SigCipherOpType.Swap, SigCipherOpType.Splice], + [SigCipherOpType.Swap, SigCipherOpType.Swap, SigCipherOpType.Reverse, SigCipherOpType.Splice], + [SigCipherOpType.Reverse, SigCipherOpType.Swap, SigCipherOpType.Splice], + [SigCipherOpType.Swap, SigCipherOpType.Reverse, SigCipherOpType.Splice], + }; + + int passed = 0; + int failed = 0; + const int totalTests = 100; + + var sw = Stopwatch.StartNew(); + + for (int t = 0; t < totalTests; t++) + { + var template = patternTemplates[rng.Next(patternTemplates.Length)]; + var ops = template.Select(type => type switch + { + SigCipherOpType.Swap => new SigCipherOperation(type, rng.Next(1, 100)), + SigCipherOpType.Splice => new SigCipherOperation(type, rng.Next(1, 4)), + _ => new SigCipherOperation(type, 0), + }).ToList(); + + int len = rng.Next(90, 110); + var input = new string(Enumerable.Range(0, len) + .Select(_ => alphabet[rng.Next(alphabet.Length)]).ToArray()); + + var manifest = new SigCipherManifest("v", ops, "t"); + var decrypted = manifest.Decipher(input); + var solved = SigCipherSolver.Solve(input, decrypted); + + if (solved is not null) + { + var check = new SigCipherManifest("v", solved, "c").Decipher(input); + if (check == decrypted) { passed++; continue; } + } + + failed++; + } + + sw.Stop(); + + int maxAllowedFailures = totalTests * 2 / 100; // 2% + Assert(failed <= maxAllowedFailures, + $"Random: {failed}/{totalTests} failed (max allowed: {maxAllowedFailures})"); + + Log.Info($"[SolverTest] Random: {passed}/{totalTests} passed in {sw.ElapsedMilliseconds}ms " + + $"({(failed > 0 ? $"{failed} failures" : "100%")})"); + + return Task.CompletedTask; + } + + // ═══════════════════════════════════════════════════════════════ + // 7. PERFORMANCE BENCHMARK + // ═══════════════════════════════════════════════════════════════ + + public static Task BenchmarkSolverAsync() + { + var ops = new SigCipherOperation[] + { + new(SigCipherOpType.Swap, 64), + new(SigCipherOpType.Reverse, 0), + new(SigCipherOpType.Swap, 56), + new(SigCipherOpType.Splice, 1), + }; + + var manifest = new SigCipherManifest("v", ops, "t"); + var decrypted = manifest.Decipher(StandardSignature); + + // Warm-up + SigCipherSolver.Solve(StandardSignature, decrypted); + + // Benchmark + const int iterations = 50; + var sw = Stopwatch.StartNew(); + + for (int i = 0; i < iterations; i++) + SigCipherSolver.Solve(StandardSignature, decrypted); + + sw.Stop(); + var avgMs = sw.Elapsed.TotalMilliseconds / iterations; + + Assert(avgMs < 100, $"Solver too slow: {avgMs:F2}ms avg (max 100ms)"); + Log.Info($"[SolverBench] Average: {avgMs:F2}ms per solve ({iterations} iterations)"); + + return Task.CompletedTask; + } + + // ═══════════════════════════════════════════════════════════════ + // 8. EDGE CASES + // ═══════════════════════════════════════════════════════════════ + + public static Task TestEdgeCasesAsync() + { + // Null/empty + Assert(SigCipherSolver.Solve(null!, "abc") is null, "Null input should return null"); + Assert(SigCipherSolver.Solve("abc", null!) is null, "Null expected should return null"); + Assert(SigCipherSolver.Solve("", "") is null, "Empty should return null"); + + // Same length (splice=0, should try 1-3) + // This is unusual for YouTube but should not crash + var opsNoSplice = new SigCipherOperation[] + { + new(SigCipherOpType.Swap, 50), + new(SigCipherOpType.Reverse, 0), + }; + var manifestNoSplice = new SigCipherManifest("v", opsNoSplice, "t"); + var decryptedNoSplice = manifestNoSplice.Decipher(StandardSignature); + + // Solver might not find this (no splice pattern matches same-length) + // But it should NOT crash + var resultNoSplice = SigCipherSolver.Solve(StandardSignature, decryptedNoSplice); + Log.Info($"[SolverTest] No-splice: {(resultNoSplice is not null ? "found" : "null (expected)")}"); + + // Output longer than input (negative splice) — should return null + Assert(SigCipherSolver.Solve("abc", "abcde") is null, + "Negative splice should return null"); + + // Splice > 3 — should return null + Assert(SigCipherSolver.Solve("abcdefghij", "abcdef") is null, + "Splice > 3 should return null"); + + Log.Info("[SolverTest] Edge cases passed"); + return Task.CompletedTask; + } + + // ═══════════════════════════════════════════════════════════════ + // 9. PARALLEL SOLVER + // ═══════════════════════════════════════════════════════════════ + + public static Task TestParallelSolverAsync() + { + var ops = new SigCipherOperation[] + { + new(SigCipherOpType.Swap, 64), + new(SigCipherOpType.Reverse, 0), + new(SigCipherOpType.Swap, 56), + new(SigCipherOpType.Splice, 1), + }; + + var manifest = new SigCipherManifest("v", ops, "t"); + var decrypted = manifest.Decipher(StandardSignature); + + var sw = Stopwatch.StartNew(); + var solved = SigCipherSolver.SolveParallel(StandardSignature, decrypted); + sw.Stop(); + + Assert(solved is not null, "Parallel solver failed"); + var check = new SigCipherManifest("v", solved!, "c").Decipher(StandardSignature); + Assert(check == decrypted, "Parallel solver verification failed"); + + Log.Info($"[SolverTest] Parallel solver: {sw.ElapsedMilliseconds}ms"); + return Task.CompletedTask; + } + + // ═══════════════════════════════════════════════════════════════ + // RUNNER + // ═══════════════════════════════════════════════════════════════ + + /// Запускает все тесты солвера. + public static async Task RunAllAsync() + { + Log.Info("\n══════════════════════════════════════"); + Log.Info(" SIG CIPHER SOLVER TEST SUITE"); + Log.Info("══════════════════════════════════════\n"); + + var sw = Stopwatch.StartNew(); + int passed = 0; + int failed = 0; + + var tests = new (string Name, Func Test)[] + { + ("All Known Patterns", TestAllKnownPatternsAsync), + ("All Swap Values (1-99)", TestAllSwapValuesAsync), + ("Double Swap Range", TestDoubleSwapRangeAsync), + ("Variable Lengths (85-115)", TestVariousSignatureLengthsAsync), + ("All Splice Values (1-3)", TestAllSpliceValuesAsync), + ("Realistic Signatures", TestRealisticSignaturesAsync), + ("Random Combinations (100)", TestRandomCombinationsAsync), + ("Edge Cases", TestEdgeCasesAsync), + ("Parallel Solver", TestParallelSolverAsync), + ("Performance Benchmark", BenchmarkSolverAsync), + }; + + foreach (var (name, test) in tests) + { + try + { + await test(); + passed++; + } + catch (Exception ex) + { + failed++; + Log.Error($" ✗ {name}: {ex.Message}"); + } + } + + sw.Stop(); + Log.Info($"\n Results: {passed}/{tests.Length} passed ({sw.Elapsed.TotalSeconds:F1}s)"); + + if (failed > 0) + throw new Exception($"Solver tests: {failed} FAILED"); + } + + private static void Assert(bool condition, string message) + { + if (!condition) throw new Exception(message); + } +} + +#endif \ No newline at end of file diff --git a/Tests/Unit/SigCipherTests.cs b/Tests/Unit/SigCipherTests.cs new file mode 100644 index 0000000..829857c --- /dev/null +++ b/Tests/Unit/SigCipherTests.cs @@ -0,0 +1,307 @@ +#if DEBUG + +using System.Diagnostics; +using LMP.Core.Youtube.Bridge.Common; +using LMP.Core.Youtube.Bridge.SigCipher; +using Microsoft.Extensions.DependencyInjection; + +namespace LMP.Tests.Unit; + +/// +/// Unit-тесты для Sig Cipher системы. +/// Все тесты работают БЕЗ сети. +/// +public static class SigCipherTests +{ + // ══════════════════════════════════════════════════════════════════ + // MANIFEST TESTS + // ══════════════════════════════════════════════════════════════════ + + public static Task TestManifestSerializationAsync() + { + var ops = new List + { + new(SigCipherOpType.Swap, 64), + new(SigCipherOpType.Reverse, 0), + new(SigCipherOpType.Swap, 56), + new(SigCipherOpType.Splice, 1), + }; + + var manifest = new SigCipherManifest("test_v1", ops, "test"); + + // Serialize + var serialized = manifest.Serialize(); + Assert(serialized.Contains("test_v1"), "Version not in serialized"); + Assert(serialized.Contains("|"), "Separator not found"); + + // Deserialize + var restored = SigCipherManifest.Deserialize(serialized); + Assert(restored is not null, "Deserialization failed"); + Assert(restored!.PlayerVersion == "test_v1", "Version mismatch"); + Assert(restored.Operations.Count == 4, $"Op count: {restored.Operations.Count}"); + + // Verify each operation + for (int i = 0; i < ops.Count; i++) + { + Assert(restored.Operations[i].Type == ops[i].Type, + $"Op[{i}] type mismatch"); + Assert(restored.Operations[i].Parameter == ops[i].Parameter, + $"Op[{i}] param mismatch"); + } + + return Task.CompletedTask; + } + + public static Task TestManifestDecipherAsync() + { + // Тест каждой операции отдельно + + // 1. Swap + var swapOps = new List { new(SigCipherOpType.Swap, 3) }; + var swapManifest = new SigCipherManifest("v1", swapOps, "test"); + var swapResult = swapManifest.Decipher("ABCDEFG"); + Assert(swapResult == "DBCAEFG", $"Swap failed: {swapResult}"); + + // 2. Reverse + var reverseOps = new List { new(SigCipherOpType.Reverse, 0) }; + var reverseManifest = new SigCipherManifest("v1", reverseOps, "test"); + var reverseResult = reverseManifest.Decipher("ABCDE"); + Assert(reverseResult == "EDCBA", $"Reverse failed: {reverseResult}"); + + // 3. Splice + var spliceOps = new List { new(SigCipherOpType.Splice, 2) }; + var spliceManifest = new SigCipherManifest("v1", spliceOps, "test"); + var spliceResult = spliceManifest.Decipher("ABCDEFG"); + Assert(spliceResult == "CDEFG", $"Splice failed: {spliceResult}"); + + // 4. Комбинация (как у YouTube) + var comboOps = new List + { + new(SigCipherOpType.Swap, 64), + new(SigCipherOpType.Reverse, 0), + new(SigCipherOpType.Swap, 56), + new(SigCipherOpType.Splice, 1), + }; + + // Длинная строка (как подпись YouTube) + var input = new string(Enumerable.Range(0, 105) + .Select(i => (char)('A' + (i % 26))).ToArray()); + + var comboManifest = new SigCipherManifest("v1", comboOps, "test"); + var result = comboManifest.Decipher(input); + + Assert(result.Length == 104, $"Length: {result.Length}"); // splice removes 1 + Assert(result != input, "Output equals input"); + + return Task.CompletedTask; + } + + // ══════════════════════════════════════════════════════════════════ + // SOLVER TESTS + // ══════════════════════════════════════════════════════════════════ + + public static Task TestSolverKnownPatternsAsync() + { + // Тестируем известные паттерны YouTube + var patterns = new[] + { + new[] { new SigCipherOperation(SigCipherOpType.Swap, 64), + new SigCipherOperation(SigCipherOpType.Reverse, 0), + new SigCipherOperation(SigCipherOpType.Swap, 56), + new SigCipherOperation(SigCipherOpType.Splice, 1) }, + + new[] { new SigCipherOperation(SigCipherOpType.Swap, 51), + new SigCipherOperation(SigCipherOpType.Swap, 44), + new SigCipherOperation(SigCipherOpType.Reverse, 0), + new SigCipherOperation(SigCipherOpType.Splice, 1) }, + + new[] { new SigCipherOperation(SigCipherOpType.Reverse, 0), + new SigCipherOperation(SigCipherOpType.Swap, 48), + new SigCipherOperation(SigCipherOpType.Splice, 2) }, + }; + + const string testInput = + "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz" + + "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnop"; + + foreach (var ops in patterns) + { + var manifest = new SigCipherManifest("v1", ops.ToList(), "test"); + var expected = manifest.Decipher(testInput); + + var sw = Stopwatch.StartNew(); + var solved = SigCipherSolver.Solve(testInput, expected); + sw.Stop(); + + Assert(solved is not null, $"Solver failed for pattern: {string.Join(" → ", ops)}"); + + // Verify solution + var solvedManifest = new SigCipherManifest("v1", solved!, "solved"); + var actual = solvedManifest.Decipher(testInput); + + Assert(actual == expected, + $"Solver verification failed:\n Expected: {expected[..30]}...\n Got: {actual[..30]}..."); + } + + return Task.CompletedTask; + } + + public static Task TestSolverRandomInputsAsync() + { + var ops = new List + { + new(SigCipherOpType.Swap, 64), + new(SigCipherOpType.Reverse, 0), + new(SigCipherOpType.Swap, 56), + new(SigCipherOpType.Splice, 1), + }; + + var manifest = new SigCipherManifest("v1", ops, "test"); + var rng = new Random(42); + const string alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_="; + + int passed = 0; + for (int test = 0; test < 20; test++) + { + int len = 90 + rng.Next(20); // 90-109 символов + var input = new string(Enumerable.Range(0, len) + .Select(_ => alphabet[rng.Next(alphabet.Length)]).ToArray()); + + var expected = manifest.Decipher(input); + var solved = SigCipherSolver.Solve(input, expected); + + if (solved is not null) + { + var check = new SigCipherManifest("v1", solved, "check").Decipher(input); + if (check == expected) passed++; + } + } + + Assert(passed >= 15, $"Only {passed}/20 random tests passed"); + + return Task.CompletedTask; + } + + // ══════════════════════════════════════════════════════════════════ + // EXTRACTOR TESTS + // ══════════════════════════════════════════════════════════════════ + + public static Task TestParseDictArrayAsync() + { + // Формат 1: bracket array + const string bracketJs = """ + var someCode = 1; + var A=["reverse","splice","length","swap","join","split"]; + var moreCode = 2; + """; + + // Тестируем через reflection (метод private) + var extractorType = typeof(SigCipherExtractor); + var method = extractorType.GetMethod("ParseDictArrayDirect", + System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Static); + + var bracketResult = (string[]?)method?.Invoke(null, [bracketJs, "A"]); + Assert(bracketResult is not null, "Bracket parse returned null"); + Assert(bracketResult!.Length == 6, $"Bracket: expected 6, got {bracketResult.Length}"); + Assert(bracketResult[0] == "reverse", $"Element 0: {bracketResult[0]}"); + Assert(bracketResult[1] == "splice", $"Element 1: {bracketResult[1]}"); + + // Формат 2: split format + const string splitJs = """ + var other = 0; + var B='reverse;splice;length;swap;join;split;test1;test2;test3;test4;test5;test6;test7;test8;test9;test10;test11'.split(";"); + var code = 1; + """; + + var splitResult = (string[]?)method?.Invoke(null, [splitJs, "B"]); + Assert(splitResult is not null, "Split parse returned null"); + Assert(splitResult!.Length == 17, $"Split: expected 17, got {splitResult.Length}"); + Assert(splitResult[0] == "reverse", $"Split element 0: {splitResult[0]}"); + + return Task.CompletedTask; + } + + public static Task TestDetectMethodsAsync() + { + // Симуляция cipher object кода + const string cipherObjCode = """ + { + Pi: function(k, U) { k.splice(0, U) }, + Zm: function(k, U) { var n=k[0]; k[0]=k[U%k.length]; k[U%k.length]=n }, + EF: function(k) { k.reverse() } + } + """; + + // Через reflection тестируем ParseCipherMethods + var extractorType = typeof(SigCipherExtractor); + var method = extractorType.GetMethod("ParseCipherMethods", + System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Static); + + var result = (Dictionary?)method?.Invoke(null, [cipherObjCode, null]); + + Assert(result is not null, "ParseCipherMethods returned null"); + Assert(result!.Count == 3, $"Expected 3 methods, got {result.Count}"); + Assert(result.ContainsKey("Pi") && result["Pi"] == SigCipherOpType.Splice, "Pi should be Splice"); + Assert(result.ContainsKey("Zm") && result["Zm"] == SigCipherOpType.Swap, "Zm should be Swap"); + Assert(result.ContainsKey("EF") && result["EF"] == SigCipherOpType.Reverse, "EF should be Reverse"); + + return Task.CompletedTask; + } + + // ══════════════════════════════════════════════════════════════════ + // LIVE TESTS (require network) + // ══════════════════════════════════════════════════════════════════ + + public static async Task TestLiveExtractionAsync(IServiceProvider services) + { + var playerManager = services.GetRequiredService(); + var context = await playerManager.GetOrLoadAsync(); + + Assert(!string.IsNullOrEmpty(context.Version), "Version is empty"); + Assert(context.BaseJs.Length > 1_000_000, $"BaseJs too small: {context.BaseJs.Length}"); + + var manifest = SigCipherExtractor.ExtractManifest(context.BaseJs, context.Version); + Assert(manifest is not null, "Manifest extraction failed"); + Assert(manifest!.Operations.Count >= 3, $"Only {manifest.Operations.Count} operations"); + + Log.Info($"[Test] Extracted: {manifest}"); + } + + public static async Task TestLiveDecryptionAsync(IServiceProvider services) + { + var decryptor = services.GetRequiredService(); + + // Тестовая подпись (реальный формат YouTube) + const string testSig = "nJAJEij0EwRAIgQSqu3XCiEGzJUPC63SA5FoCkzCVVzlxe5AsIfth4z8MCIFjLG7zmFjuXC5MVgH-ZLRjWrbKPLfTunKycnrel4HQCHQss"; + // ==Qp1YKc3yCBe010ebBBzBARqwDtO3i6b-8ni5JzSe2r4DQICIo0jkpdUW5g9wPFhNx8MT9NrA5ch1GpqeMPZHyloxIJgIQRwE0jiEJAJ2 + + var sw = Stopwatch.StartNew(); + var result = await decryptor.DecipherAsync(testSig); + sw.Stop(); + + Assert(!string.IsNullOrEmpty(result), "Decryption returned empty"); + Assert(result != testSig, "Decryption returned unchanged signature"); + Assert(result.Length > 50, $"Result too short: {result.Length}"); + + Log.Info($"[Test] Decrypted in {sw.ElapsedMilliseconds}ms: {result[..30]}..."); + + // Второй вызов должен быть из кэша + sw.Restart(); + var cached = await decryptor.DecipherAsync(testSig); + sw.Stop(); + + Assert(cached == result, "Cache returned different result"); + Assert(sw.ElapsedMilliseconds < 5, $"Cache too slow: {sw.ElapsedMilliseconds}ms"); + } + + // ══════════════════════════════════════════════════════════════════ + // HELPERS + // ══════════════════════════════════════════════════════════════════ + + private static void Assert(bool condition, string message) + { + if (!condition) throw new Exception(message); + } +} + +#endif \ No newline at end of file diff --git a/UI/Controls/AppIcon.axaml b/UI/Controls/AppIcon.axaml new file mode 100644 index 0000000..2e1e639 --- /dev/null +++ b/UI/Controls/AppIcon.axaml @@ -0,0 +1,40 @@ + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/UI/Controls/AppIcon.axaml.cs b/UI/Controls/AppIcon.axaml.cs new file mode 100644 index 0000000..138bc0d --- /dev/null +++ b/UI/Controls/AppIcon.axaml.cs @@ -0,0 +1,76 @@ +using Avalonia; +using Avalonia.Controls; + +namespace LMP.UI.Controls; + +public partial class AppIcon : UserControl +{ + public static readonly StyledProperty IconSizeProperty = + AvaloniaProperty.Register(nameof(IconSize), 24); + + public static readonly StyledProperty ShowGlowProperty = + AvaloniaProperty.Register(nameof(ShowGlow), false); + + public double IconSize + { + get => GetValue(IconSizeProperty); + set => SetValue(IconSizeProperty, value); + } + + public bool ShowGlow + { + get => GetValue(ShowGlowProperty); + set => SetValue(ShowGlowProperty, value); + } + + public AppIcon() + { + InitializeComponent(); + + // Обновляем размеры при изменении + this.GetObservable(IconSizeProperty).Subscribe(_ => UpdateLayoutIcon()); + this.GetObservable(ShowGlowProperty).Subscribe(_ => UpdateLayoutIcon()); + this.GetObservable(BoundsProperty).Subscribe(_ => UpdateLayoutIcon()); + } + + protected override void OnLoaded(Avalonia.Interactivity.RoutedEventArgs e) + { + base.OnLoaded(e); + UpdateLayoutIcon(); + } + + private void UpdateLayoutIcon() + { + var size = IconSize > 0 ? IconSize : Math.Min(Bounds.Width, Bounds.Height); + if (size <= 0) size = 24; + + // Root Grid size + RootGrid.Width = size; + RootGrid.Height = size; + // 430A-DCC8-41A0-4631 + // Glow + GlowBorder.IsVisible = ShowGlow; + GlowBorder.CornerRadius = new CornerRadius(size * 0.17); + + // Play triangle + PlayPath.Width = size * 0.5; + PlayPath.Height = size * 0.5; + PlayPath.Margin = new Thickness(size * 0.17, 0, 0, 0); + + // Chevrons + var chevronWidth = size * 0.2; + var chevronHeight = size * 0.3; + var chevronThickness = Math.Max(1.5, size * 0.1); + + ChevronsPanel.Spacing = -size * 0.08; + ChevronsPanel.Margin = new Thickness(0, 0, size * 0.04, size * 0.12); + + Chevron1.Width = chevronWidth; + Chevron1.Height = chevronHeight; + Chevron1.StrokeThickness = chevronThickness; + + Chevron2.Width = chevronWidth; + Chevron2.Height = chevronHeight; + Chevron2.StrokeThickness = chevronThickness; + } +} \ No newline at end of file diff --git a/UI/Controls/QualityImage.cs b/UI/Controls/QualityImage.cs index c96620e..3ac23a7 100644 --- a/UI/Controls/QualityImage.cs +++ b/UI/Controls/QualityImage.cs @@ -41,11 +41,6 @@ private static void OnQualityChanged(Image image, AvaloniaPropertyChangedEventAr LoadImage(image); } - private static void OnDecodeSizeChanged(Image image, AvaloniaPropertyChangedEventArgs e) - { - LoadImage(image); - } - private static async void LoadImage(Image image) { var url = GetSource(image); diff --git a/UI/Controls/TrackListControl.axaml.cs b/UI/Controls/TrackListControl.axaml.cs index a9de64d..43161dc 100644 --- a/UI/Controls/TrackListControl.axaml.cs +++ b/UI/Controls/TrackListControl.axaml.cs @@ -169,13 +169,11 @@ public bool IsQueueContext static o => o.SearchingText, static (o, v) => o.SearchingText = v); - private string _searchingText = "Searching..."; - public string SearchingText { - get => _searchingText; - private set => SetAndRaise(SearchingTextProperty, ref _searchingText, value); - } + get; + private set => SetAndRaise(SearchingTextProperty, ref field, value); + } = "Searching..."; public static readonly DirectProperty LoadingMoreTextProperty = AvaloniaProperty.RegisterDirect( @@ -183,13 +181,11 @@ public string SearchingText static o => o.LoadingMoreText, static (o, v) => o.LoadingMoreText = v); - private string _loadingMoreText = "Searching for more"; - public string LoadingMoreText { - get => _loadingMoreText; - private set => SetAndRaise(LoadingMoreTextProperty, ref _loadingMoreText, value); - } + get; + private set => SetAndRaise(LoadingMoreTextProperty, ref field, value); + } = "Searching for more"; public static readonly DirectProperty EndOfListTextProperty = AvaloniaProperty.RegisterDirect( @@ -197,26 +193,22 @@ public string LoadingMoreText static o => o.EndOfListText, static (o, v) => o.EndOfListText = v); - private string _endOfListText = "End of list"; - public string EndOfListText { - get => _endOfListText; - private set => SetAndRaise(EndOfListTextProperty, ref _endOfListText, value); - } + get; + private set => SetAndRaise(EndOfListTextProperty, ref field, value); + } = "End of list"; public static readonly DirectProperty ScrollVisibilityProperty = AvaloniaProperty.RegisterDirect( nameof(ScrollVisibility), static o => o.ScrollVisibility); - private ScrollBarVisibility _scrollVisibility = ScrollBarVisibility.Disabled; - public ScrollBarVisibility ScrollVisibility { - get => _scrollVisibility; - private set => SetAndRaise(ScrollVisibilityProperty, ref _scrollVisibility, value); - } + get; + private set => SetAndRaise(ScrollVisibilityProperty, ref field, value); + } = ScrollBarVisibility.Disabled; #endregion @@ -568,16 +560,14 @@ private void CleanupDragStyles() private sealed class DragDataTransferItem : IDataTransferItem { - private readonly IReadOnlyList _formats; - public int TrackIndex { get; } public DragDataTransferItem(int trackIndex) { TrackIndex = trackIndex; - _formats = [TrackIndexDataFormat]; + Formats = [TrackIndexDataFormat]; } - public IReadOnlyList Formats => _formats; + public IReadOnlyList Formats { get; } public object? TryGetRaw(DataFormat format) { @@ -591,13 +581,11 @@ public DragDataTransferItem(int trackIndex) private sealed class DragDataTransfer(int trackIndex) : IDataTransfer { - private readonly IReadOnlyList _formats = [TrackIndexDataFormat]; - private readonly IReadOnlyList _items = [new DragDataTransferItem(trackIndex)]; private bool _disposed; public int TrackIndex { get; } = trackIndex; - public IReadOnlyList Formats => _formats; - public IReadOnlyList Items => _items; + public IReadOnlyList Formats { get; } = [TrackIndexDataFormat]; + public IReadOnlyList Items { get; } = [new DragDataTransferItem(trackIndex)]; public void Dispose() { @@ -683,7 +671,7 @@ private void UpdateItemsContext() if (child is T typedChild && (predicate == null || predicate(typedChild))) return typedChild; - var result = FindDescendantOfType(child, predicate); + var result = FindDescendantOfType(child, predicate); if (result != null) return result; } diff --git a/UI/Dialogs/BotDetectionDialog.axaml b/UI/Dialogs/BotDetectionDialog.axaml new file mode 100644 index 0000000..1907f79 --- /dev/null +++ b/UI/Dialogs/BotDetectionDialog.axaml @@ -0,0 +1,97 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +