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[2.4] Interim Transcript Chopper #213

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[2.4] Interim Transcript Chopper #213

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93d46eb
Update component.jsx
hiroshisuga Jun 14, 2023
4fe8108
Update component.jsx
hiroshisuga Jun 14, 2023
2a5bc38
Update component.jsx
hiroshisuga Jun 15, 2023
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77 changes: 71 additions & 6 deletions bigbluebutton-html5/imports/ui/components/captions/pad/component.jsx
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Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,9 @@ const DEBOUNCE_OPTIONS = {
trailing: false,
};

const TIME_TO_EMIT_INTERIM = 3000;
const TIME_TO_STOP_INTERIM = 500;

class Pad extends PureComponent {
static getDerivedStateFromProps(nextProps) {
if (nextProps.ownerId !== nextProps.currentUserId) {
Expand Down Expand Up @@ -101,6 +104,11 @@ class Pad extends PureComponent {
}
});
}
this.timeInt = Date.now();
this.timePrevInt = Date.now();
this.prevInterim = '';
this.subsText = this.subsText.bind(this);
this.initialized = true;
}

componentDidMount() {
Expand Down Expand Up @@ -138,6 +146,25 @@ class Pad extends PureComponent {
this.setState({ url: PadService.buildPadURL(response) });
});
}

subsText(textNew, textOld){
console.log("subsText Old", textOld);
console.log("subsText New", textNew);
let subText = "";
for (let i = 0; i < textOld.length; i += 1) {
if (textOld.charAt(i) != textNew.charAt(i)) {
//console.log("subsText i ", i);
subText = textNew.substr(i);
break;
}
}
if (subText == "") {
subText = textNew.substr(textOld.length);
}
console.log("subsText Sub", subText);
console.log("");
return subText;
}

handleListen() {
const {
Expand Down Expand Up @@ -175,13 +202,21 @@ class Pad extends PureComponent {

// Stores the first guess at what was recognised (Not always accurate).
let interimTranscript = '';
let intervalInterim = 0;

// Loops through the results to check if any of the entries have been validated,
// signaled by the isFinal flag.
for (let i = resultIndex; i < results.length; i += 1) {
const { transcript } = event.results[i][0];
if (results[i].isFinal) finalTranscript += `${transcript} `;
else interimTranscript += transcript;
if (results[i].isFinal) {
finalTranscript += `${transcript} `;
//console.log('FINAL ' + i +' ' + transcript);
} else {
interimTranscript += transcript;
//console.log('interim ' + i +' ' + transcript);
intervalInterim = Date.now() - this.timePrevInt;
this.timePrevInt = Date.now();
}
}

// Adds the interimTranscript text to the iterimResultContainer to show
Expand All @@ -190,13 +225,43 @@ class Pad extends PureComponent {
this.iterimResultContainer.innerHTML = interimTranscript;
}

const newEntry = finalTranscript !== '';
if (this.initialized && (interimTranscript !== '' && this.prevInterim == '')) {
//if (this.initializable && interimTranscript.length < this.prevInterim.length) {
this.timeInt = Date.now();
this.initialized = false;
}

//const newEntry = finalTranscript !== '';
//const newEntry = interimTranscript !== '' || finalTranscript !== '';
let newEntry = false;
//const newEntry = finalTranscript !== '' || (interimTranscript !== '' && Date.now() - this.timeInt > TIME_TO_EMIT_INTERIM && interimTranscript != this.prevInterim);
if (finalTranscript !== '') {
newEntry = true;
} else if (interimTranscript !== '') {
console.log ("IntInterval", intervalInterim) ;
if (Date.now() - this.timeInt > TIME_TO_EMIT_INTERIM && interimTranscript != this.prevInterim && intervalInterim > TIME_TO_STOP_INTERIM) {
newEntry = true;
}
}

// Changes to the finalTranscript are shown to in the captions
if (newEntry) {
const text = finalTranscript.trimRight();
CaptionsService.appendText(text, locale);
finalTranscript = '';
let updateText = ''
if (finalTranscript !== '') {
updateText = this.subsText(finalTranscript, this.prevInterim);
this.prevInterim = '';
this.initialized = true;
} else {
updateText = this.subsText(interimTranscript, this.prevInterim);
this.prevInterim = interimTranscript;
this.timeInt = Date.now();
}

//if (updateText !== '') { // can be the case when the interval between interim text updates is too short
const text = updateText.trimRight();
CaptionsService.appendText(text, locale);
finalTranscript = '';
//}
}
};

Expand Down