ace-step.github.io/performance_test.html at main · ace-step/ace-step.github.io · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Audio Performance Test</title>
  <style>
    body {
      font-family: Arial, sans-serif;
      max-width: 800px;
      margin: 0 auto;
      padding: 20px;
    }
    .test-container {
      margin-bottom: 30px;
      padding: 20px;
      border: 1px solid #ddd;
      border-radius: 5px;
    }
    .results {
      margin-top: 20px;
      padding: 15px;
      background-color: #f5f5f5;
      border-radius: 5px;
    }
    table {
      width: 100%;
      border-collapse: collapse;
      margin-top: 20px;
    }
    th, td {
      border: 1px solid #ddd;
      padding: 8px;
      text-align: left;
    }
    th {
      background-color: #f2f2f2;
    }
    .loading {
      color: #888;
      font-style: italic;
    }
    .button {
      background-color: #4CAF50;
      border: none;
      color: white;
      padding: 10px 20px;
      text-align: center;
      text-decoration: none;
      display: inline-block;
      font-size: 16px;
      margin: 4px 2px;
      cursor: pointer;
      border-radius: 4px;
    }
    .button:disabled {
      background-color: #cccccc;
      cursor: not-allowed;
    }
    .test-options {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      margin-bottom: 20px;
    }
    .test-option {
      flex: 1;
      min-width: 200px;
    }
    .checkbox-group {
      margin-top: 15px;
    }
    .checkbox-label {
      display: flex;
      align-items: center;
      margin-bottom: 8px;
    }
    .checkbox-label input {
      margin-right: 8px;
    }
  </style>
</head>
<body>
  <h1>Audio Performance Test</h1>
  <p>This page tests the loading and decoding performance differences between FLAC, MP3, and Opus audio formats.</p>

  <div class="test-container">
    <h2>Test Configuration</h2>

    <div class="test-options">
      <div class="test-option">
        <p>Select a sample to test:</p>
        <select id="sample-selector">
          <option value="DiverseStyles/acid_house">Acid House</option>
          <option value="DiverseStyles/alternative_rock">Alternative Rock</option>
          <option value="DiverseStyles/cyberpunk">Cyberpunk</option>
          <option value="MultipleLang/jpop">J-Pop</option>
          <option value="VocalTechniques/acappella">Acappella</option>
        </select>
      </div>

      <div class="test-option">
        <p>Number of times to run the test:</p>
        <input type="number" id="test-runs" value="3" min="1" max="10">
      </div>
    </div>

    <div class="checkbox-group">
      <p>Optimizations to test:</p>
      <label class="checkbox-label">
        <input type="checkbox" id="use-worker" checked>
        Use Web Worker for decoding
      </label>
      <label class="checkbox-label">
        <input type="checkbox" id="pre-decode" checked>
        Pre-initialize decoder
      </label>
      <label class="checkbox-label">
        <input type="checkbox" id="progressive-loading" checked>
        Use progressive loading
      </label>
    </div>

    <button id="start-test" class="button">Start Test</button>
  </div>

  <div class="test-container">
    <h2>Test Results</h2>
    <div id="results" class="results">
      <p>No tests run yet. Click "Start Test" to begin.</p>
    </div>
    <table id="results-table" style="display: none;">
      <thead>
        <tr>
          <th>Format</th>
          <th>File Size</th>
          <th>Avg. Load Time</th>
          <th>Avg. Decode Time</th>
          <th>Total Time</th>
        </tr>
      </thead>
      <tbody>
        <tr id="flac-results">
          <td>FLAC</td>
          <td id="flac-size">-</td>
          <td id="flac-load">-</td>
          <td id="flac-decode">-</td>
          <td id="flac-total">-</td>
        </tr>
        <tr id="mp3-results">
          <td>MP3</td>
          <td id="mp3-size">-</td>
          <td id="mp3-load">-</td>
          <td id="mp3-decode">-</td>
          <td id="mp3-total">-</td>
        </tr>
        <tr id="opus-results">
          <td>Opus</td>
          <td id="opus-size">-</td>
          <td id="opus-load">-</td>
          <td id="opus-decode">-</td>
          <td id="opus-total">-</td>
        </tr>
      </tbody>
    </table>
  </div>

  <!-- Include the audio loader script -->
  <script src="audio-loader.js"></script>
  <script src="decoder-worker.js"></script>

  <script>
    document.addEventListener('DOMContentLoaded', function() {
      const startTestButton = document.getElementById('start-test');
      const sampleSelector = document.getElementById('sample-selector');
      const testRunsInput = document.getElementById('test-runs');
      const resultsDiv = document.getElementById('results');
      const resultsTable = document.getElementById('results-table');
      const useWorkerCheckbox = document.getElementById('use-worker');
      const preDecodeCheckbox = document.getElementById('pre-decode');
      const progressiveLoadingCheckbox = document.getElementById('progressive-loading');

      // Check if OfflineAudioContext is available
      const hasOfflineAudioContext = typeof OfflineAudioContext !== 'undefined';

      // Audio context for decoding
      let audioContext = null;

      // Test results
      let flacResults = { loadTimes: [], decodeTimes: [], totalTimes: [] };
      let mp3Results = { loadTimes: [], decodeTimes: [], totalTimes: [] };
      let opusResults = { loadTimes: [], decodeTimes: [], totalTimes: [] };
      let flacSize = 0;
      let mp3Size = 0;
      let opusSize = 0;

      // Show warning if OfflineAudioContext is not available
      if (!hasOfflineAudioContext) {
        resultsDiv.innerHTML = `
          <div style="background-color: #fff3cd; color: #856404; padding: 10px; border-radius: 5px; margin-bottom: 15px;">
            <strong>Warning:</strong> OfflineAudioContext is not available in your browser.
            Worker-based decoding will fall back to main thread decoding.
          </div>
          <p>No tests run yet. Click "Start Test" to begin.</p>
        `;
      }

      // Initialize audio context when needed
      function getAudioContext() {
        if (!audioContext) {
          audioContext = new (window.AudioContext || window.webkitAudioContext)();
        }
        return audioContext;
      }

      // Pre-initialize decoder if option is checked
      if (preDecodeCheckbox.checked) {
        getAudioContext();
        // Create a small silent buffer to initialize the decoder
        const buffer = audioContext.createBuffer(2, 44100, 44100);
        const source = audioContext.createBufferSource();
        source.buffer = buffer;
        source.connect(audioContext.destination);
        source.start(0);
        source.stop(0.001);
        console.log('Audio decoder pre-initialized');
      }

      startTestButton.addEventListener('click', async function() {
        // Reset results
        flacResults = { loadTimes: [], decodeTimes: [], totalTimes: [] };
        mp3Results = { loadTimes: [], decodeTimes: [], totalTimes: [] };
        opusResults = { loadTimes: [], decodeTimes: [], totalTimes: [] };
        flacSize = 0;
        mp3Size = 0;
        opusSize = 0;

        // Update UI
        startTestButton.disabled = true;
        resultsDiv.innerHTML = '<p class="loading">Running tests...</p>';
        resultsTable.style.display = 'none';

        // Get test configuration
        const samplePath = sampleSelector.value;
        const numRuns = parseInt(testRunsInput.value);
        const useWorker = useWorkerCheckbox.checked;
        const preDecode = preDecodeCheckbox.checked;
        const progressiveLoading = progressiveLoadingCheckbox.checked;

        // Run the tests
        try {
          // Get file sizes first
          await getFileSizes(samplePath);

          // Run the tests multiple times
          for (let i = 0; i < numRuns; i++) {
            resultsDiv.innerHTML = `<p class="loading">Running test ${i+1} of ${numRuns}...</p>`;

            // Test FLAC loading and decoding time
            const flacResult = await testLoadAndDecodeTime(`flac/samples/${samplePath}.flac`, 'flac', useWorker, progressiveLoading);
            flacResults.loadTimes.push(flacResult.loadTime);
            flacResults.decodeTimes.push(flacResult.decodeTime);
            flacResults.totalTimes.push(flacResult.totalTime);

            // Test MP3 loading and decoding time
            const mp3Result = await testLoadAndDecodeTime(`mp3/samples/${samplePath}.mp3`, 'mp3', useWorker, progressiveLoading);
            mp3Results.loadTimes.push(mp3Result.loadTime);
            mp3Results.decodeTimes.push(mp3Result.decodeTime);
            mp3Results.totalTimes.push(mp3Result.totalTime);

            // Test Opus loading and decoding time (if available)
            try {
              const opusResult = await testLoadAndDecodeTime(`opus/samples/${samplePath}.opus`, 'opus', useWorker, progressiveLoading);
              opusResults.loadTimes.push(opusResult.loadTime);
              opusResults.decodeTimes.push(opusResult.decodeTime);
              opusResults.totalTimes.push(opusResult.totalTime);
            } catch (error) {
              console.warn('Opus file not available, skipping test:', error);
            }
          }

          // Display results
          displayResults();
        } catch (error) {
          resultsDiv.innerHTML = `<p>Error running tests: ${error.message}</p>`;
        } finally {
          startTestButton.disabled = false;
        }
      });

      // Function to test loading and decoding time for an audio file
      async function testLoadAndDecodeTime(url, format, useWorker, progressiveLoading) {
        return new Promise((resolve, reject) => {
          const startTime = performance.now();
          let loadTime = 0;
          let decodeTime = 0;
          let totalTime = 0;

          // Create a new audio element for each test
          const audioElement = new Audio();

          // Set up event listeners
          const loadHandler = async () => {
            // Record load time
            loadTime = performance.now() - startTime;

            // Now measure decode time
            const decodeStartTime = performance.now();

            try {
              if (useWorker && window.Worker) {
                // Use worker for decoding
                await decodeInWorker(url);
              } else {
                // Decode in main thread
                await decodeInMainThread(url);
              }

              // Record decode time
              decodeTime = performance.now() - decodeStartTime;
              totalTime = performance.now() - startTime;

              // Clean up
              audioElement.removeEventListener('canplaythrough', loadHandler);
              audioElement.removeEventListener('error', errorHandler);

              resolve({ loadTime, decodeTime, totalTime });
            } catch (error) {
              reject(error);
            }
          };

          const errorHandler = (error) => {
            // Clean up
            audioElement.removeEventListener('canplaythrough', loadHandler);
            audioElement.removeEventListener('error', errorHandler);

            reject(new Error(`Failed to load audio: ${url}`));
          };

          // Add event listeners
          audioElement.addEventListener('canplaythrough', loadHandler);
          audioElement.addEventListener('error', errorHandler);

          // Start loading the audio
          if (progressiveLoading) {
            // Use progressive loading
            audioElement.preload = 'none';
            audioElement.src = url;
            audioElement.load();
          } else {
            // Standard loading
            audioElement.src = url;
            audioElement.load();
          }
        });
      }

      // Function to decode audio in a worker
      async function decodeInWorker(url) {
        return new Promise(async (resolve, reject) => {
          try {
            // Create a worker if it doesn't exist
            const worker = new Worker('decoder-worker.js');

            // Set up message handler
            worker.onmessage = async function(e) {
              if (e.data.error) {
                if (e.data.needsMainThreadDecode && e.data.audioData) {
                  // Worker couldn't decode because OfflineAudioContext isn't available
                  // Fall back to main thread decoding
                  console.log('Worker reported OfflineAudioContext not available, falling back to main thread decoding');
                  try {
                    const ctx = getAudioContext();
                    const decodedData = await ctx.decodeAudioData(e.data.audioData);
                    resolve(decodedData);
                  } catch (decodeError) {
                    reject(decodeError);
                  }
                } else {
                  reject(new Error(e.data.error));
                }
              } else {
                resolve(e.data.decodedData);
              }
              // Terminate the worker
              worker.terminate();
            };

            // Fetch the audio data
            const response = await fetch(url);
            const arrayBuffer = await response.arrayBuffer();

            // Send to worker for decoding
            worker.postMessage({
              id: url,
              audioData: arrayBuffer
            }, [arrayBuffer]);
          } catch (error) {
            reject(error);
          }
        });
      }

      // Function to decode audio in the main thread
      async function decodeInMainThread(url) {
        try {
          // Fetch the audio data
          const response = await fetch(url);
          const arrayBuffer = await response.arrayBuffer();

          // Decode the audio data
          const ctx = getAudioContext();
          await ctx.decodeAudioData(arrayBuffer);
          return true;
        } catch (error) {
          console.error('Error decoding audio:', error);
          throw error;
        }
      }

      // Function to get file sizes
      async function getFileSizes(samplePath) {
        try {
          // Get FLAC file size
          const flacResponse = await fetch(`flac/samples/${samplePath}.flac`, { method: 'HEAD' });
          flacSize = parseInt(flacResponse.headers.get('content-length') || '0');

          // Get MP3 file size
          const mp3Response = await fetch(`mp3/samples/${samplePath}.mp3`, { method: 'HEAD' });
          mp3Size = parseInt(mp3Response.headers.get('content-length') || '0');

          // Get Opus file size if available
          try {
            const opusResponse = await fetch(`opus/samples/${samplePath}.opus`, { method: 'HEAD' });
            if (opusResponse.ok) {
              opusSize = parseInt(opusResponse.headers.get('content-length') || '0');
            }
          } catch (error) {
            console.warn('Opus file not available:', error);
          }
        } catch (error) {
          console.error('Error getting file sizes:', error);
        }
      }

      // Function to display test results
      function displayResults() {
        // Calculate statistics
        const flacAvgLoad = average(flacResults.loadTimes);
        const flacAvgDecode = average(flacResults.decodeTimes);
        const flacAvgTotal = average(flacResults.totalTimes);

        const mp3AvgLoad = average(mp3Results.loadTimes);
        const mp3AvgDecode = average(mp3Results.decodeTimes);
        const mp3AvgTotal = average(mp3Results.totalTimes);

        // Update the table
        document.getElementById('flac-size').textContent = formatFileSize(flacSize);
        document.getElementById('flac-load').textContent = formatTime(flacAvgLoad);
        document.getElementById('flac-decode').textContent = formatTime(flacAvgDecode);
        document.getElementById('flac-total').textContent = formatTime(flacAvgTotal);

        document.getElementById('mp3-size').textContent = formatFileSize(mp3Size);
        document.getElementById('mp3-load').textContent = formatTime(mp3AvgLoad);
        document.getElementById('mp3-decode').textContent = formatTime(mp3AvgDecode);
        document.getElementById('mp3-total').textContent = formatTime(mp3AvgTotal);

        // Only show Opus results if we have them
        if (opusResults.loadTimes.length > 0) {
          const opusAvgLoad = average(opusResults.loadTimes);
          const opusAvgDecode = average(opusResults.decodeTimes);
          const opusAvgTotal = average(opusResults.totalTimes);

          document.getElementById('opus-size').textContent = formatFileSize(opusSize);
          document.getElementById('opus-load').textContent = formatTime(opusAvgLoad);
          document.getElementById('opus-decode').textContent = formatTime(opusAvgDecode);
          document.getElementById('opus-total').textContent = formatTime(opusAvgTotal);

          document.getElementById('opus-results').style.display = 'table-row';
        } else {
          document.getElementById('opus-results').style.display = 'none';
        }

        // Show the table
        resultsTable.style.display = 'table';

        // Calculate improvement percentages
        const mp3SizeImprovement = ((flacSize - mp3Size) / flacSize) * 100;
        const mp3TimeImprovement = ((flacAvgTotal - mp3AvgTotal) / flacAvgTotal) * 100;

        // Build results summary
        let resultsSummary = `
          <p>Tests completed successfully!</p>
          <p>MP3 files are <strong>${mp3SizeImprovement.toFixed(1)}%</strong> smaller than FLAC files.</p>
          <p>MP3 files load and decode <strong>${mp3TimeImprovement.toFixed(1)}%</strong> faster than FLAC files.</p>
        `;

        // Add Opus comparison if available
        if (opusResults.loadTimes.length > 0) {
          const opusAvgTotal = average(opusResults.totalTimes);
          const opusSizeImprovement = ((flacSize - opusSize) / flacSize) * 100;
          const opusTimeImprovement = ((flacAvgTotal - opusAvgTotal) / flacAvgTotal) * 100;
          const opusVsMp3Size = ((mp3Size - opusSize) / mp3Size) * 100;
          const opusVsMp3Time = ((mp3AvgTotal - opusAvgTotal) / mp3AvgTotal) * 100;

          resultsSummary += `
            <p>Opus files are <strong>${opusSizeImprovement.toFixed(1)}%</strong> smaller than FLAC files and <strong>${opusVsMp3Size.toFixed(1)}%</strong> smaller than MP3 files.</p>
            <p>Opus files load and decode <strong>${opusTimeImprovement.toFixed(1)}%</strong> faster than FLAC files and <strong>${opusVsMp3Time.toFixed(1)}%</strong> faster than MP3 files.</p>
          `;
        }

        resultsSummary += `<p>See the table below for detailed results.</p>`;

        // Update the results div
        resultsDiv.innerHTML = resultsSummary;
      }

      // Helper function to calculate average
      function average(arr) {
        if (arr.length === 0) return 0;
        return arr.reduce((a, b) => a + b, 0) / arr.length;
      }

      // Helper function to format time in milliseconds
      function formatTime(ms) {
        return `${ms.toFixed(0)} ms`;
      }

      // Helper function to format file size
      function formatFileSize(bytes) {
        if (bytes === 0) return '0 Bytes';

        const k = 1024;
        const sizes = ['Bytes', 'KB', 'MB', 'GB'];
        const i = Math.floor(Math.log(bytes) / Math.log(k));

        return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
      }
    });
  </script>
</body>
</html>