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<!doctype html> |
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<html lang="en-us"> |
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<head> |
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<title>command : Voice assistant example using Whisper + WebAssembly</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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<script src="../coi-serviceworker.js"></script> |
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<link rel="icon" href="data:,"> |
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</head> |
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<body> |
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<div id="main-container"> |
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<b>command : Voice assistant example using Whisper + WebAssembly</b> |
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<br><br> |
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You can find more about this project on <a href="https://github.com/ggerganov/whisper.cpp/tree/master/examples/command.wasm">GitHub</a>. |
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<br><br> |
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<b>More examples:</b> |
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<a href="../">main</a> | |
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<a href="../bench.wasm/">bench</a> | |
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<a href="../stream.wasm">stream</a> | |
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<a href="../command.wasm/">command</a> | |
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<a href="../wchess.wasm/">wchess</a> | |
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<br><br> |
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<hr> |
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Select the model you would like to use, click the "Start" button and follow the instructions. |
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<br><br> |
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<div id="model-whisper"> |
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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-base-en" onclick="loadWhisper('base.en')">base.en (142 MB)</button> |
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<br><br> |
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Quantized models:<br><br> |
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<button id="fetch-whisper-tiny-en-q5_1" onclick="loadWhisper('tiny-en-q5_1')">tiny.en (Q5_1, 31 MB)</button> |
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<button id="fetch-whisper-base-en-q5_1" onclick="loadWhisper('base-en-q5_1')">base.en (Q5_1, 57 MB)</button> |
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<span id="fetch-whisper-progress"></span> |
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</div> |
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<br> |
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<div id="input"> |
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<button id="start" onclick="onStart()" disabled>Start</button> |
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<button id="stop" onclick="onStop()" disabled>Stop</button> |
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<button id="clear" onclick="clearCache()">Clear Cache</button> |
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</div> |
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<br> |
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<div id="state"> |
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Status: <b><span id="state-status">not started</span></b> |
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<pre id="state-transcribed">[The recognized voice commands will be displayed here]</pre> |
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</div> |
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<hr> |
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Debug output: |
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<textarea id="output" rows="20"></textarea> |
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<br> |
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<b>Troubleshooting</b> |
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<br><br> |
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The page does some heavy computations, so make sure: |
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<ul> |
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<li>To use a modern web browser (e.g. Chrome, Firefox)</li> |
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<li>To use a fast desktop or laptop computer (i.e. not a mobile phone)</li> |
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<li>Your browser supports WASM <a href="https://webassembly.org/roadmap/">Fixed-width SIMD</a></li> |
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</ul> |
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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/command.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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var context = null; |
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var audio = null; |
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var audio0 = null; |
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var instance = null; |
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var model_whisper = null; |
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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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preRun: function() { |
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printTextarea('js: Preparing ...'); |
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}, |
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postRun: function() { |
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printTextarea('js: Initialized successfully!'); |
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} |
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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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printTextarea('storeFS: stored model: ' + fname + ' size: ' + buf.length); |
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document.getElementById('model-whisper-status').innerHTML = 'loaded "' + model_whisper + '"!'; |
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if (model_whisper != null) { |
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document.getElementById('start').disabled = false; |
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document.getElementById('stop' ).disabled = true; |
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} |
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} |
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function loadWhisper(model) { |
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let urls = { |
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'tiny.en': 'https://huggingface.co/ggerganov/whisper.cpp/resolve/main/ggml-tiny.en.bin', |
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'base.en': 'https://huggingface.co/ggerganov/whisper.cpp/resolve/main/ggml-base.en.bin', |
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'tiny-en-q5_1': 'https://huggingface.co/ggerganov/whisper.cpp/resolve/main/ggml-tiny.en-q5_1.bin', |
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'base-en-q5_1': 'https://huggingface.co/ggerganov/whisper.cpp/resolve/main/ggml-base.en-q5_1.bin', |
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}; |
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let sizes = { |
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'tiny.en': 75, |
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'base.en': 142, |
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'tiny-en-q5_1': 31, |
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'base-en-q5_1': 57, |
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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-en-q5_1').style.display = 'none'; |
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document.getElementById('fetch-whisper-base-en-q5_1').style.display = 'none'; |
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document.getElementById('model-whisper-status').innerHTML = 'loading "' + 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-en-q5_1'); if (el) el.style.display = 'inline-block'; |
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el = document.getElementById('fetch-whisper-base-en-q5_1'); 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 kSampleRate = 16000; |
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const kRestartRecording_s = 120; |
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const kIntervalAudio_ms = 250; |
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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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window.AudioContext = window.AudioContext || window.webkitAudioContext; |
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window.OfflineAudioContext = window.OfflineAudioContext || window.webkitOfflineAudioContext; |
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function stopRecording() { |
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Module.set_status("paused"); |
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doRecording = false; |
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audio0 = null; |
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audio = null; |
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context = null; |
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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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Module.set_status(""); |
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document.getElementById('start').disabled = true; |
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document.getElementById('stop').disabled = false; |
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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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var blob = new Blob(chunks, { 'type' : 'audio/ogg; codecs=opus' }); |
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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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if (!context) { |
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return; |
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} |
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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 audioAll = new Float32Array(audio0 == null ? audio.length : audio0.length + audio.length); |
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if (audio0 != null) { |
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audioAll.set(audio0, 0); |
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} |
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audioAll.set(audio, audio0 == null ? 0 : audio0.length); |
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if (instance) { |
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Module.set_audio(instance, audioAll); |
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} |
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}); |
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}, function(e) { |
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audio = null; |
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}); |
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} |
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reader.readAsArrayBuffer(blob); |
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}; |
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mediaRecorder.onstop = function(e) { |
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if (doRecording) { |
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setTimeout(function() { |
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startRecording(); |
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}); |
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} |
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}; |
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mediaRecorder.start(kIntervalAudio_ms); |
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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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document.getElementById('start').disabled = false; |
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document.getElementById('stop').disabled = true; |
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mediaRecorder = null; |
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} |
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if (audio != null && audio.length > kSampleRate*kRestartRecording_s) { |
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if (doRecording) { |
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clearInterval(interval); |
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audio0 = audio; |
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audio = null; |
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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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} |
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}, 100); |
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} |
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var nLines = 0; |
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var intervalUpdate = null; |
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var transcribedAll = ''; |
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function onStart() { |
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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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} |
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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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startRecording(); |
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intervalUpdate = setInterval(function() { |
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var transcribed = Module.get_transcribed(); |
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if (transcribed != null && transcribed.length > 1) { |
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transcribedAll += transcribed + '<br>'; |
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nLines++; |
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if (nLines > 10) { |
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var i = transcribedAll.indexOf('<br>'); |
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if (i > 0) { |
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transcribedAll = transcribedAll.substring(i + 4); |
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nLines--; |
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} |
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} |
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} |
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document.getElementById('state-status').innerHTML = Module.get_status(); |
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document.getElementById('state-transcribed').innerHTML = transcribedAll; |
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}, 100); |
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} |
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function onStop() { |
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stopRecording(); |
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} |
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</script> |
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<script type="text/javascript" src="command.js"></script> |
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</body> |
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</html> |
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