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<!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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<style> |
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#output { |
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width: 100%; |
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height: 100%; |
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margin: 0 auto; |
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margin-top: 10px; |
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border-left: 0px; |
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border-right: 0px; |
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padding-left: 0px; |
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padding-right: 0px; |
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display: block; |
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background-color: black; |
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color: white; |
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font-size: 10px; |
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font-family: 'Lucida Console', Monaco, monospace; |
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outline: none; |
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white-space: pre; |
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overflow-wrap: normal; |
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overflow-x: scroll; |
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} |
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</style> |
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</head> |
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<body> |
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<div id="main-container"> |
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<b>Minimal <a href="https://github.com/ggerganov/whisper.cpp">whisper.cpp</a> example running fully in the browser</b> |
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<br><br> |
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Usage instructions:<br> |
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<ul> |
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<li>Load a ggml model file (you can obtain one from <a href="https://ggml.ggerganov.com/">here</a>, recommended: <b>tiny</b> or <b>base</b>)</li> |
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<li>Select audio file to transcribe or record audio from the microphone (sample: <a href="https://whisper.ggerganov.com/jfk.wav">jfk.wav</a>)</li> |
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<li>Click on the "Transcribe" button to start the transcription</li> |
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</ul> |
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Note that the computation is quite heavy and may take a few seconds to complete.<br> |
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The transcription results will be displayed in the text area below.<br><br> |
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<b>Important: your browser must support WASM SIMD instructions for this to work.</b> |
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<br><br><hr> |
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<div id="model"> |
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Whisper model: <span id="model-whisper-status"></span> |
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<button id="fetch-whisper-tiny-en" onclick="loadWhisper('tiny.en')">tiny.en (75 MB)</button> |
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<button id="fetch-whisper-tiny" onclick="loadWhisper('tiny')">tiny (75 MB)</button> |
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<button id="fetch-whisper-base-en" onclick="loadWhisper('base.en')">base.en (142 MB)</button> |
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<button id="fetch-whisper-base" onclick="loadWhisper('base')">base (142 MB)</button> |
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<span id="fetch-whisper-progress"></span> |
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<input type="file" id="whisper-file" name="file" onchange="loadFile(event, 'whisper.bin')" /> |
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</div> |
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<br> |
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<div id="input"> |
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Input: |
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<input type="radio" id="file" name="input" value="file" checked="checked" onchange="changeInput('file')" /> File |
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<input type="radio" id="mic" name="input" value="mic" onchange="changeInput('mic')" /> Microphone |
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</div> |
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<br> |
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<div id="input_file"> |
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Audio file: |
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<input type="file" id="file" name="file" onchange="loadAudio(event)" /> |
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</div> |
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<div id="input_mic" style="display: none;"> |
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Microphone: |
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<button id="start" onclick="startRecording()">Start</button> |
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<button id="stop" onclick="stopRecording()" disabled>Stop</button> |
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<br><br> |
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<div id="progress" style="display: none;"> |
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<div id="progress-bar" style="width: 0%; height: 10px; background-color: #4CAF50;"></div> |
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<div id="progress-text">0%</div> |
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</div> |
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</div> |
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<audio controls="controls" id="audio" loop hidden> |
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Your browser does not support the <audio> tag. |
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<source id="source" src="" type="audio/wav" /> |
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</audio> |
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<hr><br> |
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<table> |
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<tr> |
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<td> |
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Language: |
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<select id="language" name="language"> |
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<option value="en">English</option> |
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<option value="ar">Arabic</option> |
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<option value="hy">Armenian</option> |
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<option value="az">Azerbaijani</option> |
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<option value="eu">Basque</option> |
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<option value="be">Belarusian</option> |
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<option value="bn">Bengali</option> |
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<option value="bg">Bulgarian</option> |
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<option value="ca">Catalan</option> |
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<option value="zh">Chinese</option> |
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<option value="hr">Croatian</option> |
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<option value="cs">Czech</option> |
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<option value="da">Danish</option> |
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<option value="nl">Dutch</option> |
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<option value="en">English</option> |
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<option value="et">Estonian</option> |
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<option value="tl">Filipino</option> |
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<option value="fi">Finnish</option> |
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<option value="fr">French</option> |
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<option value="gl">Galician</option> |
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<option value="ka">Georgian</option> |
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<option value="de">German</option> |
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<option value="el">Greek</option> |
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<option value="gu">Gujarati</option> |
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<option value="iw">Hebrew</option> |
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<option value="hi">Hindi</option> |
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<option value="hu">Hungarian</option> |
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<option value="is">Icelandic</option> |
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<option value="id">Indonesian</option> |
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<option value="ga">Irish</option> |
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<option value="it">Italian</option> |
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<option value="ja">Japanese</option> |
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<option value="kn">Kannada</option> |
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<option value="ko">Korean</option> |
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<option value="la">Latin</option> |
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<option value="lv">Latvian</option> |
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<option value="lt">Lithuanian</option> |
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<option value="mk">Macedonian</option> |
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<option value="ms">Malay</option> |
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<option value="mt">Maltese</option> |
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<option value="no">Norwegian</option> |
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<option value="fa">Persian</option> |
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<option value="pl">Polish</option> |
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<option value="pt">Portuguese</option> |
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<option value="ro">Romanian</option> |
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<option value="ru">Russian</option> |
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<option value="sr">Serbian</option> |
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<option value="sk">Slovak</option> |
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<option value="sl">Slovenian</option> |
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<option value="es">Spanish</option> |
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<option value="sw">Swahili</option> |
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<option value="sv">Swedish</option> |
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<option value="ta">Tamil</option> |
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<option value="te">Telugu</option> |
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<option value="th">Thai</option> |
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<option value="tr">Turkish</option> |
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<option value="uk">Ukrainian</option> |
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<option value="ur">Urdu</option> |
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<option value="vi">Vietnamese</option> |
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<option value="cy">Welsh</option> |
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<option value="yi">Yiddish</option> |
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</select> |
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</td> |
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<td> |
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<button onclick="onProcess(false);">Transcribe</button> |
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</td> |
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<td> |
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<button onclick="onProcess(true);">Translate</button> |
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</td> |
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</tr> |
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</table> |
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<br> |
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<textarea id="output" rows="20"></textarea> |
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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="helpers.js"></script> |
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<script type='text/javascript'> |
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function setAudio(audio) { |
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} |
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function changeInput(input) { |
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if (input == 'file') { |
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document.getElementById('input_file').style.display = 'block'; |
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document.getElementById('input_mic' ).style.display = 'none'; |
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document.getElementById('progress' ).style.display = 'none'; |
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} else { |
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document.getElementById('input_file').style.display = 'none'; |
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document.getElementById('input_mic' ).style.display = 'block'; |
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document.getElementById('progress' ).style.display = 'block'; |
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} |
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} |
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var Module = { |
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print: printTextarea, |
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printErr: printTextarea, |
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setStatus: function(text) { |
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printTextarea('js: ' + text); |
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}, |
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monitorRunDependencies: function(left) { |
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} |
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}; |
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var context = null; |
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var audio = null; |
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var instance = null; |
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var model_whisper = ''; |
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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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let dbVersion = 1 |
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let dbName = 'whisper.ggerganov.com'; |
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let indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB |
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function storeFS(fname, buf) { |
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try { |
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Module.FS_unlink(fname); |
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} catch (e) { |
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} |
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Module.FS_createDataFile("/", fname, buf, true, true); |
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model_whisper = fname; |
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document.getElementById('model-whisper-status').innerHTML = 'loaded "' + model_whisper + '"!'; |
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printTextarea('storeFS: stored model: ' + fname + ' size: ' + buf.length); |
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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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printTextarea("loadFile: loading model: " + file.name + ", size: " + file.size + " bytes"); |
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printTextarea('loadFile: please wait ...'); |
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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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storeFS(fname, buf); |
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} |
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reader.readAsArrayBuffer(file); |
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document.getElementById('fetch-whisper-tiny-en').style.display = 'none'; |
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document.getElementById('fetch-whisper-base-en').style.display = 'none'; |
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document.getElementById('fetch-whisper-tiny' ).style.display = 'none'; |
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document.getElementById('fetch-whisper-base' ).style.display = 'none'; |
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document.getElementById('whisper-file' ).style.display = 'none'; |
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document.getElementById('model-whisper-status' ).innerHTML = 'loaded model: ' + file.name; |
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} |
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function loadWhisper(model) { |
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let urls = { |
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'tiny.en': 'ggml-tiny.en.bin', |
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'tiny': 'https://huggingface.co/datasets/ggerganov/whisper.cpp/resolve/main/ggml-whisper-tiny.bin', |
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'base.en': 'https://huggingface.co/datasets/ggerganov/whisper.cpp/resolve/main/ggml-whisper-base.en.bin', |
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'base': 'https://huggingface.co/datasets/ggerganov/whisper.cpp/resolve/main/ggml-whisper-base.bin', |
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}; |
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let sizes = { |
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'tiny.en': 75, |
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'tiny': 75, |
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'base.en': 142, |
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'base': 142, |
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}; |
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let url = urls[model]; |
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let dst = 'whisper.bin'; |
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let size_mb = sizes[model]; |
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model_whisper = model; |
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document.getElementById('fetch-whisper-tiny-en').style.display = 'none'; |
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document.getElementById('fetch-whisper-base-en').style.display = 'none'; |
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document.getElementById('fetch-whisper-tiny' ).style.display = 'none'; |
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document.getElementById('fetch-whisper-base' ).style.display = 'none'; |
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document.getElementById('whisper-file' ).style.display = 'none'; |
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document.getElementById('model-whisper-status' ).innerHTML = 'loading model: ' + model; |
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cbProgress = function(p) { |
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let el = document.getElementById('fetch-whisper-progress'); |
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el.innerHTML = Math.round(100*p) + '%'; |
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}; |
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cbCancel = function() { |
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var el; |
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el = document.getElementById('fetch-whisper-tiny-en'); if (el) el.style.display = 'inline-block'; |
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el = document.getElementById('fetch-whisper-base-en'); if (el) el.style.display = 'inline-block'; |
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el = document.getElementById('fetch-whisper-tiny' ); if (el) el.style.display = 'inline-block'; |
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el = document.getElementById('fetch-whisper-base' ); if (el) el.style.display = 'inline-block'; |
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el = document.getElementById('whisper-file' ); if (el) el.style.display = 'inline-block'; |
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el = document.getElementById('model-whisper-status' ); if (el) el.innerHTML = ''; |
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}; |
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loadRemote(url, dst, size_mb, cbProgress, storeFS, cbCancel, printTextarea); |
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} |
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const kMaxAudio_s = 120; |
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const kSampleRate = 16000; |
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window.AudioContext = window.AudioContext || window.webkitAudioContext; |
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window.OfflineAudioContext = window.OfflineAudioContext || window.webkitOfflineAudioContext; |
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function loadAudio(event) { |
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if (!context) { |
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context = new AudioContext({ |
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sampleRate: kSampleRate, |
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channelCount: 1, |
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echoCancellation: false, |
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autoGainControl: true, |
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noiseSuppression: true, |
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}); |
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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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printTextarea('js: loading audio: ' + file.name + ', size: ' + file.size + ' bytes'); |
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printTextarea('js: please wait ...'); |
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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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printTextarea('js: audio loaded, size: ' + audio.length); |
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if (audio.length > kMaxAudio_s*kSampleRate) { |
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audio = audio.slice(0, kMaxAudio_s*kSampleRate); |
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printTextarea('js: truncated audio to first ' + kMaxAudio_s + ' seconds'); |
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} |
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setAudio(audio); |
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}); |
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}, function(e) { |
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printTextarea('js: error decoding audio: ' + e); |
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audio = null; |
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setAudio(audio); |
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}); |
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} |
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reader.readAsArrayBuffer(file); |
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} |
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var mediaRecorder = null; |
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var doRecording = false; |
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var startTime = 0; |
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function stopRecording() { |
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doRecording = false; |
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} |
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function startRecording() { |
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if (!context) { |
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context = new AudioContext({ |
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sampleRate: kSampleRate, |
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channelCount: 1, |
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echoCancellation: false, |
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autoGainControl: true, |
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noiseSuppression: true, |
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}); |
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} |
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document.getElementById('start').disabled = true; |
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document.getElementById('stop').disabled = false; |
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document.getElementById('progress-bar').style.width = '0%'; |
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document.getElementById('progress-text').innerHTML = '0%'; |
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doRecording = true; |
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startTime = Date.now(); |
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var chunks = []; |
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var stream = null; |
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navigator.mediaDevices.getUserMedia({audio: true, video: false}) |
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.then(function(s) { |
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stream = s; |
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mediaRecorder = new MediaRecorder(stream); |
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mediaRecorder.ondataavailable = function(e) { |
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chunks.push(e.data); |
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}; |
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mediaRecorder.onstop = function(e) { |
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var blob = new Blob(chunks, { 'type' : 'audio/ogg; codecs=opus' }); |
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chunks = []; |
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document.getElementById('start').disabled = false; |
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document.getElementById('stop').disabled = true; |
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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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printTextarea('js: audio recorded, size: ' + audio.length); |
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if (audio.length > kMaxAudio_s*kSampleRate) { |
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audio = audio.slice(0, kMaxAudio_s*kSampleRate); |
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printTextarea('js: truncated audio to first ' + kMaxAudio_s + ' seconds'); |
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} |
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setAudio(audio); |
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}); |
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}, function(e) { |
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printTextarea('js: error decoding audio: ' + e); |
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audio = null; |
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setAudio(audio); |
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}); |
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} |
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reader.readAsArrayBuffer(blob); |
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}; |
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mediaRecorder.start(); |
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}) |
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.catch(function(err) { |
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printTextarea('js: error getting audio stream: ' + err); |
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}); |
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var interval = setInterval(function() { |
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if (!doRecording) { |
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clearInterval(interval); |
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mediaRecorder.stop(); |
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stream.getTracks().forEach(function(track) { |
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track.stop(); |
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}); |
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} |
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document.getElementById('progress-bar').style.width = (100*(Date.now() - startTime)/1000/kMaxAudio_s) + '%'; |
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document.getElementById('progress-text').innerHTML = (100*(Date.now() - startTime)/1000/kMaxAudio_s).toFixed(0) + '%'; |
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}, 1000); |
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printTextarea('js: recording ...'); |
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setTimeout(function() { |
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if (doRecording) { |
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printTextarea('js: recording stopped after ' + kMaxAudio_s + ' seconds'); |
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stopRecording(); |
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} |
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}, kMaxAudio_s*1000); |
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} |
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function onProcess(translate) { |
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if (!instance) { |
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instance = Module.init('whisper.bin'); |
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if (instance) { |
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printTextarea("js: whisper initialized, instance: " + instance); |
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document.getElementById('model').innerHTML = 'Model loaded: ' + model_whisper; |
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} |
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} |
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if (!instance) { |
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printTextarea("js: failed to initialize whisper"); |
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return; |
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} |
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if (!audio) { |
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printTextarea("js: no audio data"); |
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return; |
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} |
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if (instance) { |
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printTextarea(''); |
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printTextarea('js: processing - this might take a while ...'); |
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printTextarea(''); |
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setTimeout(function() { |
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var ret = Module.full_default(instance, audio, document.getElementById('language').value, translate); |
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console.log('js: full_default returned: ' + ret); |
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if (ret) { |
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printTextarea("js: whisper returned: " + ret); |
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} |
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}, 100); |
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} |
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} |
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</script> |
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<script type="text/javascript" src="main.js"></script> |
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</body> |
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</html> |
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