2022-11-25 22:57:46 +01:00
|
|
|
<!doctype html>
|
|
|
|
|
<html lang="en-us">
|
|
|
|
|
<head>
|
|
|
|
|
<title>stream : Real-time Whisper transcription in WebAssembly</title>
|
|
|
|
|
|
|
|
|
|
<style>
|
|
|
|
|
#output {
|
|
|
|
|
width: 100%;
|
|
|
|
|
height: 100%;
|
|
|
|
|
margin: 0 auto;
|
|
|
|
|
margin-top: 10px;
|
|
|
|
|
border-left: 0px;
|
|
|
|
|
border-right: 0px;
|
|
|
|
|
padding-left: 0px;
|
|
|
|
|
padding-right: 0px;
|
|
|
|
|
display: block;
|
|
|
|
|
background-color: black;
|
|
|
|
|
color: white;
|
|
|
|
|
font-size: 10px;
|
|
|
|
|
font-family: 'Lucida Console', Monaco, monospace;
|
|
|
|
|
outline: none;
|
|
|
|
|
white-space: pre;
|
|
|
|
|
overflow-wrap: normal;
|
|
|
|
|
overflow-x: scroll;
|
|
|
|
|
}
|
|
|
|
|
</style>
|
|
|
|
|
</head>
|
|
|
|
|
<body>
|
|
|
|
|
<div id="main-container">
|
|
|
|
|
<b>stream : Real-time Whisper transcription in WebAssembly</b>
|
|
|
|
|
|
|
|
|
|
<br><br>
|
|
|
|
|
|
|
|
|
|
You can find more about this project on <a href="https://github.com/ggerganov/whisper.cpp/tree/master/examples/stream.wasm">GitHub</a>.
|
|
|
|
|
|
|
|
|
|
<br><br>
|
|
|
|
|
|
2023-04-30 17:51:57 +02:00
|
|
|
<b>More examples:</b>
|
|
|
|
|
<a href="https://whisper.ggerganov.com/">main</a> |
|
|
|
|
|
<a href="https://whisper.ggerganov.com/bench">bench</a> |
|
|
|
|
|
<a href="https://whisper.ggerganov.com/stream">stream</a> |
|
|
|
|
|
<a href="https://whisper.ggerganov.com/command">command</a> |
|
|
|
|
|
<a href="https://whisper.ggerganov.com/talk">talk</a> |
|
|
|
|
|
|
|
|
|
|
<br><br>
|
|
|
|
|
|
2022-11-25 22:57:46 +01:00
|
|
|
<hr>
|
|
|
|
|
|
|
|
|
|
Select the model you would like to use, click the "Start" button and start speaking
|
|
|
|
|
|
|
|
|
|
<br><br>
|
|
|
|
|
|
|
|
|
|
<div id="model-whisper">
|
|
|
|
|
Whisper model: <span id="model-whisper-status"></span>
|
|
|
|
|
<button id="fetch-whisper-tiny-en" onclick="loadWhisper('tiny.en')">tiny.en (75 MB)</button>
|
|
|
|
|
<button id="fetch-whisper-base-en" onclick="loadWhisper('base.en')">base.en (142 MB)</button>
|
2023-04-30 17:51:57 +02:00
|
|
|
<br><br>
|
|
|
|
|
Quantized models:<br><br>
|
|
|
|
|
<button id="fetch-whisper-tiny-en-q5_1" onclick="loadWhisper('tiny-en-q5_1')">tiny.en (Q5_1, 31 MB)</button>
|
|
|
|
|
<button id="fetch-whisper-base-en-q5_1" onclick="loadWhisper('base-en-q5_1')">base.en (Q5_1, 57 MB)</button>
|
2022-11-25 22:57:46 +01:00
|
|
|
<span id="fetch-whisper-progress"></span>
|
|
|
|
|
|
|
|
|
|
<!--
|
|
|
|
|
<input type="file" id="file" name="file" onchange="loadFile(event, 'whisper.bin')" />
|
|
|
|
|
-->
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<div id="input">
|
|
|
|
|
<button id="start" onclick="onStart()" disabled>Start</button>
|
|
|
|
|
<button id="stop" onclick="onStop()" disabled>Stop</button>
|
|
|
|
|
<button id="clear" onclick="clearCache()">Clear Cache</button>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<div id="state">
|
|
|
|
|
Status: <b><span id="state-status">not started</span></b>
|
|
|
|
|
|
|
|
|
|
<pre id="state-transcribed">[The transcribed text will be displayed here]</pre>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<hr>
|
|
|
|
|
|
|
|
|
|
Debug output:
|
|
|
|
|
<textarea id="output" rows="20"></textarea>
|
|
|
|
|
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<b>Troubleshooting</b>
|
|
|
|
|
|
|
|
|
|
<br><br>
|
|
|
|
|
|
|
|
|
|
The page does some heavy computations, so make sure:
|
|
|
|
|
|
|
|
|
|
<ul>
|
|
|
|
|
<li>To use a modern web browser (e.g. Chrome, Firefox)</li>
|
|
|
|
|
<li>To use a fast desktop or laptop computer (i.e. not a mobile phone)</li>
|
|
|
|
|
<li>Your browser supports WASM <a href="https://webassembly.org/roadmap/">Fixed-width SIMD</a></li>
|
|
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
<div class="cell-version">
|
|
|
|
|
<span>
|
|
|
|
|
|
|
|
|
|
|
Build time: <span class="nav-link">@GIT_DATE@</span> |
|
|
|
|
|
Commit hash: <a class="nav-link" href="https://github.com/ggerganov/whisper.cpp/commit/@GIT_SHA1@">@GIT_SHA1@</a> |
|
|
|
|
|
Commit subject: <span class="nav-link">@GIT_COMMIT_SUBJECT@</span> |
|
|
|
|
|
<a class="nav-link" href="https://github.com/ggerganov/whisper.cpp/tree/master/examples/stream.wasm">Source Code</a> |
|
|
|
|
|
</span>
|
|
|
|
|
</div>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<script type="text/javascript" src="helpers.js"></script>
|
|
|
|
|
<script type='text/javascript'>
|
|
|
|
|
// web audio context
|
|
|
|
|
var context = null;
|
|
|
|
|
|
|
|
|
|
// audio data
|
|
|
|
|
var audio = null;
|
|
|
|
|
var audio0 = null;
|
|
|
|
|
|
|
|
|
|
// the stream instance
|
|
|
|
|
var instance = null;
|
|
|
|
|
|
|
|
|
|
// model name
|
|
|
|
|
var model_whisper = null;
|
|
|
|
|
|
|
|
|
|
var Module = {
|
|
|
|
|
print: printTextarea,
|
|
|
|
|
printErr: printTextarea,
|
|
|
|
|
setStatus: function(text) {
|
|
|
|
|
printTextarea('js: ' + text);
|
|
|
|
|
},
|
|
|
|
|
monitorRunDependencies: function(left) {
|
|
|
|
|
},
|
|
|
|
|
preRun: function() {
|
|
|
|
|
printTextarea('js: Preparing ...');
|
|
|
|
|
},
|
|
|
|
|
postRun: function() {
|
|
|
|
|
printTextarea('js: Initialized successfully!');
|
|
|
|
|
}
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
//
|
|
|
|
|
// fetch models
|
|
|
|
|
//
|
|
|
|
|
|
|
|
|
|
let dbVersion = 1
|
|
|
|
|
let dbName = 'whisper.ggerganov.com';
|
|
|
|
|
let indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB
|
|
|
|
|
|
|
|
|
|
function storeFS(fname, buf) {
|
|
|
|
|
// write to WASM file using FS_createDataFile
|
|
|
|
|
// if the file exists, delete it
|
|
|
|
|
try {
|
|
|
|
|
Module.FS_unlink(fname);
|
|
|
|
|
} catch (e) {
|
|
|
|
|
// ignore
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
Module.FS_createDataFile("/", fname, buf, true, true);
|
|
|
|
|
|
|
|
|
|
printTextarea('storeFS: stored model: ' + fname + ' size: ' + buf.length);
|
|
|
|
|
|
|
|
|
|
document.getElementById('model-whisper-status').innerHTML = 'loaded "' + model_whisper + '"!';
|
|
|
|
|
|
|
|
|
|
if (model_whisper != null) {
|
|
|
|
|
document.getElementById('start').disabled = false;
|
|
|
|
|
document.getElementById('stop' ).disabled = true;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function loadWhisper(model) {
|
|
|
|
|
let urls = {
|
|
|
|
|
'tiny.en': 'https://whisper.ggerganov.com/ggml-model-whisper-tiny.en.bin',
|
|
|
|
|
'base.en': 'https://whisper.ggerganov.com/ggml-model-whisper-base.en.bin',
|
2023-04-30 17:51:57 +02:00
|
|
|
|
|
|
|
|
'tiny-en-q5_1': 'https://whisper.ggerganov.com/ggml-model-whisper-tiny.en-q5_1.bin',
|
|
|
|
|
'base-en-q5_1': 'https://whisper.ggerganov.com/ggml-model-whisper-base.en-q5_1.bin',
|
2022-11-25 22:57:46 +01:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
let sizes = {
|
|
|
|
|
'tiny.en': 75,
|
|
|
|
|
'base.en': 142,
|
2023-04-30 17:51:57 +02:00
|
|
|
|
|
|
|
|
'tiny-en-q5_1': 31,
|
|
|
|
|
'base-en-q5_1': 57,
|
2022-11-25 22:57:46 +01:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
let url = urls[model];
|
|
|
|
|
let dst = 'whisper.bin';
|
|
|
|
|
let size_mb = sizes[model];
|
|
|
|
|
|
|
|
|
|
model_whisper = model;
|
|
|
|
|
|
|
|
|
|
document.getElementById('fetch-whisper-tiny-en').style.display = 'none';
|
|
|
|
|
document.getElementById('fetch-whisper-base-en').style.display = 'none';
|
2023-04-30 17:51:57 +02:00
|
|
|
|
|
|
|
|
document.getElementById('fetch-whisper-tiny-en-q5_1').style.display = 'none';
|
|
|
|
|
document.getElementById('fetch-whisper-base-en-q5_1').style.display = 'none';
|
|
|
|
|
|
2022-11-25 22:57:46 +01:00
|
|
|
document.getElementById('model-whisper-status').innerHTML = 'loading "' + model + '" ... ';
|
|
|
|
|
|
|
|
|
|
cbProgress = function(p) {
|
|
|
|
|
let el = document.getElementById('fetch-whisper-progress');
|
|
|
|
|
el.innerHTML = Math.round(100*p) + '%';
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
cbCancel = function() {
|
|
|
|
|
var el;
|
|
|
|
|
el = document.getElementById('fetch-whisper-tiny-en'); if (el) el.style.display = 'inline-block';
|
|
|
|
|
el = document.getElementById('fetch-whisper-base-en'); if (el) el.style.display = 'inline-block';
|
2023-04-30 17:51:57 +02:00
|
|
|
|
|
|
|
|
el = document.getElementById('fetch-whisper-tiny-en-q5_1'); if (el) el.style.display = 'inline-block';
|
|
|
|
|
el = document.getElementById('fetch-whisper-base-en-q5_1'); if (el) el.style.display = 'inline-block';
|
|
|
|
|
|
2022-11-25 22:57:46 +01:00
|
|
|
el = document.getElementById('model-whisper-status'); if (el) el.innerHTML = '';
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
loadRemote(url, dst, size_mb, cbProgress, storeFS, cbCancel, printTextarea);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
//
|
|
|
|
|
// microphone
|
|
|
|
|
//
|
|
|
|
|
|
2022-11-26 10:40:06 +01:00
|
|
|
const kSampleRate = 16000;
|
|
|
|
|
const kRestartRecording_s = 120;
|
|
|
|
|
const kIntervalAudio_ms = 5000; // pass the recorded audio to the C++ instance at this rate
|
|
|
|
|
|
2022-11-25 22:57:46 +01:00
|
|
|
var mediaRecorder = null;
|
|
|
|
|
var doRecording = false;
|
|
|
|
|
var startTime = 0;
|
|
|
|
|
|
2022-11-26 10:40:06 +01:00
|
|
|
window.AudioContext = window.AudioContext || window.webkitAudioContext;
|
|
|
|
|
window.OfflineAudioContext = window.OfflineAudioContext || window.webkitOfflineAudioContext;
|
|
|
|
|
|
2022-11-25 22:57:46 +01:00
|
|
|
function stopRecording() {
|
|
|
|
|
Module.set_status("paused");
|
|
|
|
|
doRecording = false;
|
|
|
|
|
audio0 = null;
|
|
|
|
|
audio = null;
|
|
|
|
|
context = null;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function startRecording() {
|
|
|
|
|
if (!context) {
|
|
|
|
|
context = new AudioContext({
|
2022-11-26 10:40:06 +01:00
|
|
|
sampleRate: kSampleRate,
|
2022-11-25 22:57:46 +01:00
|
|
|
channelCount: 1,
|
|
|
|
|
echoCancellation: false,
|
|
|
|
|
autoGainControl: true,
|
|
|
|
|
noiseSuppression: true,
|
|
|
|
|
});
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
Module.set_status("");
|
|
|
|
|
|
|
|
|
|
document.getElementById('start').disabled = true;
|
|
|
|
|
document.getElementById('stop').disabled = false;
|
|
|
|
|
|
|
|
|
|
doRecording = true;
|
|
|
|
|
startTime = Date.now();
|
|
|
|
|
|
|
|
|
|
var chunks = [];
|
|
|
|
|
var stream = null;
|
|
|
|
|
|
|
|
|
|
navigator.mediaDevices.getUserMedia({audio: true, video: false})
|
|
|
|
|
.then(function(s) {
|
|
|
|
|
stream = s;
|
|
|
|
|
mediaRecorder = new MediaRecorder(stream);
|
|
|
|
|
mediaRecorder.ondataavailable = function(e) {
|
|
|
|
|
chunks.push(e.data);
|
|
|
|
|
|
|
|
|
|
var blob = new Blob(chunks, { 'type' : 'audio/ogg; codecs=opus' });
|
|
|
|
|
var reader = new FileReader();
|
|
|
|
|
|
|
|
|
|
reader.onload = function(event) {
|
|
|
|
|
var buf = new Uint8Array(reader.result);
|
|
|
|
|
|
|
|
|
|
if (!context) {
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
context.decodeAudioData(buf.buffer, function(audioBuffer) {
|
|
|
|
|
var offlineContext = new OfflineAudioContext(audioBuffer.numberOfChannels, audioBuffer.length, audioBuffer.sampleRate);
|
|
|
|
|
var source = offlineContext.createBufferSource();
|
|
|
|
|
source.buffer = audioBuffer;
|
|
|
|
|
source.connect(offlineContext.destination);
|
|
|
|
|
source.start(0);
|
|
|
|
|
|
|
|
|
|
offlineContext.startRendering().then(function(renderedBuffer) {
|
|
|
|
|
audio = renderedBuffer.getChannelData(0);
|
|
|
|
|
|
|
|
|
|
//printTextarea('js: audio recorded, size: ' + audio.length + ', old size: ' + (audio0 == null ? 0 : audio0.length));
|
|
|
|
|
|
|
|
|
|
var audioAll = new Float32Array(audio0 == null ? audio.length : audio0.length + audio.length);
|
|
|
|
|
if (audio0 != null) {
|
|
|
|
|
audioAll.set(audio0, 0);
|
|
|
|
|
}
|
|
|
|
|
audioAll.set(audio, audio0 == null ? 0 : audio0.length);
|
|
|
|
|
|
|
|
|
|
if (instance) {
|
|
|
|
|
Module.set_audio(instance, audioAll);
|
|
|
|
|
}
|
|
|
|
|
});
|
|
|
|
|
}, function(e) {
|
|
|
|
|
audio = null;
|
|
|
|
|
});
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
reader.readAsArrayBuffer(blob);
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
mediaRecorder.onstop = function(e) {
|
|
|
|
|
if (doRecording) {
|
|
|
|
|
setTimeout(function() {
|
|
|
|
|
startRecording();
|
|
|
|
|
});
|
|
|
|
|
}
|
|
|
|
|
};
|
|
|
|
|
|
2022-11-26 10:40:06 +01:00
|
|
|
mediaRecorder.start(kIntervalAudio_ms);
|
2022-11-25 22:57:46 +01:00
|
|
|
})
|
|
|
|
|
.catch(function(err) {
|
|
|
|
|
printTextarea('js: error getting audio stream: ' + err);
|
|
|
|
|
});
|
|
|
|
|
|
|
|
|
|
var interval = setInterval(function() {
|
|
|
|
|
if (!doRecording) {
|
|
|
|
|
clearInterval(interval);
|
|
|
|
|
mediaRecorder.stop();
|
|
|
|
|
stream.getTracks().forEach(function(track) {
|
|
|
|
|
track.stop();
|
|
|
|
|
});
|
|
|
|
|
|
|
|
|
|
document.getElementById('start').disabled = false;
|
|
|
|
|
document.getElementById('stop').disabled = true;
|
|
|
|
|
|
|
|
|
|
mediaRecorder = null;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// if audio length is more than kRestartRecording_s seconds, restart recording
|
|
|
|
|
if (audio != null && audio.length > kSampleRate*kRestartRecording_s) {
|
|
|
|
|
if (doRecording) {
|
|
|
|
|
//printTextarea('js: restarting recording');
|
|
|
|
|
|
|
|
|
|
clearInterval(interval);
|
|
|
|
|
audio0 = audio;
|
|
|
|
|
audio = null;
|
|
|
|
|
mediaRecorder.stop();
|
|
|
|
|
stream.getTracks().forEach(function(track) {
|
|
|
|
|
track.stop();
|
|
|
|
|
});
|
|
|
|
|
}
|
|
|
|
|
}
|
2022-11-26 10:40:06 +01:00
|
|
|
}, 100);
|
2022-11-25 22:57:46 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
//
|
|
|
|
|
// main
|
|
|
|
|
//
|
|
|
|
|
|
|
|
|
|
var nLines = 0;
|
|
|
|
|
var intervalUpdate = null;
|
|
|
|
|
var transcribedAll = '';
|
|
|
|
|
|
|
|
|
|
function onStart() {
|
|
|
|
|
if (!instance) {
|
|
|
|
|
instance = Module.init('whisper.bin');
|
|
|
|
|
|
|
|
|
|
if (instance) {
|
|
|
|
|
printTextarea("js: whisper initialized, instance: " + instance);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (!instance) {
|
|
|
|
|
printTextarea("js: failed to initialize whisper");
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
startRecording();
|
|
|
|
|
|
|
|
|
|
intervalUpdate = setInterval(function() {
|
|
|
|
|
var transcribed = Module.get_transcribed();
|
|
|
|
|
|
|
|
|
|
if (transcribed != null && transcribed.length > 1) {
|
|
|
|
|
transcribedAll += transcribed + '<br>';
|
|
|
|
|
nLines++;
|
|
|
|
|
|
|
|
|
|
// if more than 10 lines, remove the first line
|
|
|
|
|
if (nLines > 10) {
|
|
|
|
|
var i = transcribedAll.indexOf('<br>');
|
|
|
|
|
if (i > 0) {
|
|
|
|
|
transcribedAll = transcribedAll.substring(i + 4);
|
|
|
|
|
nLines--;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
document.getElementById('state-status').innerHTML = Module.get_status();
|
|
|
|
|
document.getElementById('state-transcribed').innerHTML = transcribedAll;
|
|
|
|
|
}, 100);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function onStop() {
|
|
|
|
|
stopRecording();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
</script>
|
|
|
|
|
<script type="text/javascript" src="stream.js"></script>
|
|
|
|
|
</body>
|
|
|
|
|
</html>
|
