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154 lines
5.4 KiB
154 lines
5.4 KiB
<!doctype html>
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<html lang="en-us">
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<head>
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<title>whisper.cpp : WASM example</title>
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</head>
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<body>
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<div id="main-container">
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Minimal <b>whisper.cpp</b> example using Javascript bindings
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<br><br>
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Model:
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<input type="file" id="file" name="file" onchange="loadFile(event, 'ggml.bin')" />
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<br><br>
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WAV:
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<input type="file" id="file" name="file" onchange="loadAudio(event)" />
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<br><br>
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<button onclick="onTranscribe();">Transcribe</button>
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<br><br>
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<div class="cell-version">
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<span>
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Build time: <span class="nav-link">@GIT_DATE@</span> |
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Commit hash: <a class="nav-link" href="https://github.com/ggerganov/whisper.cpp/commit/@GIT_SHA1@">@GIT_SHA1@</a> |
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Commit subject: <span class="nav-link">@GIT_COMMIT_SUBJECT@</span> |
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<a class="nav-link" href="https://github.com/ggerganov/whisper.cpp/tree/master/examples/whisper.wasm">Source Code</a> |
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</span>
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</div>
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</div>
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<script type="text/javascript" src="whisper.js"></script>
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<script type='text/javascript'>
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window.AudioContext = window.AudioContext || window.webkitAudioContext;
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window.OfflineAudioContext = window.OfflineAudioContext || window.webkitOfflineAudioContext;
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// web audio context
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var context = null;
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// audio data
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var audio = null;
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// the whisper module instance
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var whisper = null;
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var instance = null;
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// instantiate the whisper instance
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// whisper_factory comes from the whisper.js module
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whisper_factory().then(function(obj) {
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whisper = obj;
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});
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// helper function
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function convertTypedArray(src, type) {
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var buffer = new ArrayBuffer(src.byteLength);
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var baseView = new src.constructor(buffer).set(src);
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return new type(buffer);
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}
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// initialize whisper
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function init() {
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if (!instance) {
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instance = whisper.init('ggml.bin');
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if (instance) {
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console.log('whisper instance initialized');
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}
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}
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if (!instance) {
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console.log('whisper instance initialization failed');
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return;
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}
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if (instance) {
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var ret = whisper.full_default(instance, audio);
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if (ret) {
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console.log('whisper full_default returned: ' + ret);
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}
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}
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}
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function loadFile(event, fname) {
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var file = event.target.files[0] || null;
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if (file == null) {
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return;
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}
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console.log(
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"<p>File information: <strong>" + file.name +
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"</strong> type: <strong>" + file.type +
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"</strong> size: <strong>" + file.size +
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"</strong> bytes</p>"
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);
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var reader = new FileReader();
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reader.onload = function(event) {
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var buf = new Uint8Array(reader.result);
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// write to WASM file using whisper.FS_createDataFile
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whisper.FS_createDataFile("/", fname, buf, true, true);
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}
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reader.readAsArrayBuffer(file);
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}
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function loadAudio(event) {
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if (!context) {
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context = new AudioContext({sampleRate: 16000});
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}
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var file = event.target.files[0] || null;
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if (file == null) {
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return;
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}
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console.log(
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"<p>Audio information: <strong>" + file.name +
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"</strong> type: <strong>" + file.type +
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"</strong> size: <strong>" + file.size +
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"</strong> bytes</p>"
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);
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var reader = new FileReader();
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reader.onload = function(event) {
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var buf = new Uint8Array(reader.result);
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context.decodeAudioData(buf.buffer, function(audioBuffer) {
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var offlineContext = new OfflineAudioContext(audioBuffer.numberOfChannels, audioBuffer.length, audioBuffer.sampleRate);
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var source = offlineContext.createBufferSource();
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source.buffer = audioBuffer;
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source.connect(offlineContext.destination);
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source.start(0);
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offlineContext.startRendering().then(function(renderedBuffer) {
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audio = renderedBuffer.getChannelData(0);
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//var audio16 = convertTypedArray(data, Int16Array);
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});
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});
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}
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reader.readAsArrayBuffer(file);
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}
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//
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// Transcribe
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//
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function onTranscribe() {
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init();
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}
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</script>
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</body>
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</html>
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