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| <html lang="en-us"> | |
| <head> | |
| <title>whisper.cpp : WASM example</title> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/iframe-resizer/4.3.1/iframeResizer.contentWindow.min.js"></script> | |
| <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"> | |
| <div id="warning" style="display: none; padding: 1rem"> | |
| <b style="color: red; font-size: large" | |
| >Warning: your browser does not support SharedArrayBuffer please try | |
| open the page in a new tab. | |
| </b> | |
| <!-- <a target="_blank" href="https://radames-whisper-wasm.hf.space" target="_blank" | |
| >https://radames-whisper-wasm.hf.space</a | |
| > --> | |
| </div> | |
| <b | |
| >Minimal | |
| <a target="_blank" href="https://github.com/ggerganov/whisper.cpp">whisper.cpp</a> | |
| example running fully in the browser</b | |
| > | |
| <br /><br /> | |
| Usage instructions:<br /> | |
| <ul> | |
| <li> | |
| Load a ggml model file (you can obtain one from | |
| <a target="_blank" href="https://ggml.ggerganov.com/">here</a>, recommended: | |
| <b>tiny</b> or <b>base</b>) | |
| </li> | |
| <li> | |
| Select audio file to transcribe or record audio from the microphone | |
| (sample: <a target="_blank" href="https://whisper.ggerganov.com/jfk.wav">jfk.wav</a>) | |
| </li> | |
| <li>Click on the "Transcribe" button to start the transcription</li> | |
| </ul> | |
| Note that the computation is quite heavy and may take a few seconds to | |
| complete.<br /> | |
| The transcription results will be displayed in the text area below.<br /><br /> | |
| <b>Important:</b> | |
| <ul> | |
| <li> | |
| your browser must support WASM SIMD instructions for this to work | |
| </li> | |
| <li> | |
| Firefox cannot load files larger than 256 MB - use Chrome instead | |
| </li> | |
| </ul> | |
| <b>More examples:</b> | |
| <a target="_blank" href="https://whisper.ggerganov.com/">main</a> | | |
| <a target="_blank" href="https://whisper.ggerganov.com/bench">bench</a> | | |
| <a target="_blank" href="https://whisper.ggerganov.com/stream">stream</a> | | |
| <a target="_blank" href="https://whisper.ggerganov.com/command">command</a> | | |
| <a target="_blank" href="https://whisper.ggerganov.com/talk">talk</a> | | |
| <hr /> | |
| <div id="model"> | |
| Whisper models: <span id="model-whisper-status"></span><br /><br /> | |
| <button id="fetch-whisper-tiny-en" onclick="loadWhisper('tiny.en')"> | |
| tiny.en (75 MB) | |
| </button> | |
| <button id="fetch-whisper-tiny" onclick="loadWhisper('tiny')"> | |
| tiny (75 MB) | |
| </button> | |
| <button id="fetch-whisper-base-en" onclick="loadWhisper('base.en')"> | |
| base.en (142 MB) | |
| </button> | |
| <button id="fetch-whisper-base" onclick="loadWhisper('base')"> | |
| base (142 MB) | |
| </button> | |
| <button id="fetch-whisper-small-en" onclick="loadWhisper('small.en')"> | |
| small.en (466 MB) | |
| </button> | |
| <button id="fetch-whisper-small" onclick="loadWhisper('small')"> | |
| small (466 MB) | |
| </button> | |
| <input | |
| type="file" | |
| id="whisper-file" | |
| name="file" | |
| onchange="loadFile(event, 'whisper.bin')" | |
| /> | |
| <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-tiny-q5_1" onclick="loadWhisper('tiny-q5_1')"> | |
| tiny (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> | |
| <button id="fetch-whisper-base-q5_1" onclick="loadWhisper('base-q5_1')"> | |
| base (Q5_1, 57 MB) | |
| </button> | |
| <button | |
| id="fetch-whisper-small-en-q5_1" | |
| onclick="loadWhisper('small-en-q5_1')" | |
| > | |
| small.en (Q5_1, 182 MB) | |
| </button> | |
| <button | |
| id="fetch-whisper-small-q5_1" | |
| onclick="loadWhisper('small-q5_1')" | |
| > | |
| small (Q5_1, 182 MB)</button | |
| ><br /> | |
| <button | |
| id="fetch-whisper-medium-en-q5_0" | |
| onclick="loadWhisper('medium-en-q5_0')" | |
| > | |
| medium.en (Q5_0, 515 MB) | |
| </button> | |
| <button | |
| id="fetch-whisper-medium-q5_0" | |
| onclick="loadWhisper('medium-q5_0')" | |
| > | |
| medium (Q5_0, 515 MB) | |
| </button> | |
| <button | |
| id="fetch-whisper-large-q5_0" | |
| onclick="loadWhisper('large-q5_0')" | |
| > | |
| large (Q5_0, 1030 MB) | |
| </button> | |
| <span id="fetch-whisper-progress"></span> | |
| </div> | |
| <br /> | |
| <!-- radio button to select between file upload or microphone --> | |
| <div id="input"> | |
| Input: | |
| <input | |
| type="radio" | |
| id="file" | |
| name="input" | |
| value="file" | |
| checked="checked" | |
| onchange="changeInput('file')" | |
| /> | |
| <label for="file">File</label> | |
| <input | |
| type="radio" | |
| id="mic" | |
| name="input" | |
| value="mic" | |
| onchange="changeInput('mic')" | |
| /> | |
| <label for="mic">Microphone</label> | |
| </div> | |
| <br /> | |
| <div id="input_file"> | |
| Audio file: | |
| <input type="file" id="file" name="file" onchange="loadAudio(event)" /> | |
| </div> | |
| <div id="input_mic" style="display: none"> | |
| Microphone: | |
| <button id="start" onclick="startRecording()">Start</button> | |
| <button id="stop" onclick="stopRecording()" disabled>Stop</button> | |
| <!-- progress bar to show recording progress --> | |
| <br /><br /> | |
| <div id="progress" style="display: none"> | |
| <div | |
| id="progress-bar" | |
| style="width: 0%; height: 10px; background-color: #4caf50" | |
| ></div> | |
| <div id="progress-text">0%</div> | |
| </div> | |
| </div> | |
| <a target="_blank"udio controls="controls" id="audio" loop hidden> | |
| Your browser does not support the <audio> tag. | |
| <source id="source" src="" type="audio/wav" /> | |
| </audio> | |
| <hr /> | |
| <br /> | |
| <table> | |
| <tr> | |
| <td> | |
| Language: | |
| <select id="language" name="language"> | |
| <option value="en">English</option> | |
| <option value="ar">Arabic</option> | |
| <option value="hy">Armenian</option> | |
| <option value="az">Azerbaijani</option> | |
| <option value="eu">Basque</option> | |
| <option value="be">Belarusian</option> | |
| <option value="bn">Bengali</option> | |
| <option value="bg">Bulgarian</option> | |
| <option value="ca">Catalan</option> | |
| <option value="zh">Chinese</option> | |
| <option value="hr">Croatian</option> | |
| <option value="cs">Czech</option> | |
| <option value="da">Danish</option> | |
| <option value="nl">Dutch</option> | |
| <option value="en">English</option> | |
| <option value="et">Estonian</option> | |
| <option value="tl">Filipino</option> | |
| <option value="fi">Finnish</option> | |
| <option value="fr">French</option> | |
| <option value="gl">Galician</option> | |
| <option value="ka">Georgian</option> | |
| <option value="de">German</option> | |
| <option value="el">Greek</option> | |
| <option value="gu">Gujarati</option> | |
| <option value="iw">Hebrew</option> | |
| <option value="hi">Hindi</option> | |
| <option value="hu">Hungarian</option> | |
| <option value="is">Icelandic</option> | |
| <option value="id">Indonesian</option> | |
| <option value="ga">Irish</option> | |
| <option value="it">Italian</option> | |
| <option value="ja">Japanese</option> | |
| <option value="kn">Kannada</option> | |
| <option value="ko">Korean</option> | |
| <option value="la">Latin</option> | |
| <option value="lv">Latvian</option> | |
| <option value="lt">Lithuanian</option> | |
| <option value="mk">Macedonian</option> | |
| <option value="ms">Malay</option> | |
| <option value="mt">Maltese</option> | |
| <option value="no">Norwegian</option> | |
| <option value="fa">Persian</option> | |
| <option value="pl">Polish</option> | |
| <option value="pt">Portuguese</option> | |
| <option value="ro">Romanian</option> | |
| <option value="ru">Russian</option> | |
| <option value="sr">Serbian</option> | |
| <option value="sk">Slovak</option> | |
| <option value="sl">Slovenian</option> | |
| <option value="es">Spanish</option> | |
| <option value="sw">Swahili</option> | |
| <option value="sv">Swedish</option> | |
| <option value="ta">Tamil</option> | |
| <option value="te">Telugu</option> | |
| <option value="th">Thai</option> | |
| <option value="tr">Turkish</option> | |
| <option value="uk">Ukrainian</option> | |
| <option value="ur">Urdu</option> | |
| <option value="vi">Vietnamese</option> | |
| <option value="cy">Welsh</option> | |
| <option value="yi">Yiddish</option> | |
| </select> | |
| </td> | |
| <!-- Slider to select number of threads between 1 and 16 --> | |
| <td> | |
| Threads: | |
| <input | |
| type="range" | |
| id="threads" | |
| name="threads" | |
| min="1" | |
| max="16" | |
| value="8" | |
| onchange="changeThreads(this.value)" | |
| /> | |
| <span id="threads-value">8</span> | |
| </td> | |
| <td> | |
| <button onclick="onProcess(false);">Transcribe</button> | |
| </td> | |
| <td> | |
| <button onclick="onProcess(true);">Translate</button> | |
| </td> | |
| </tr> | |
| </table> | |
| <br /> | |
| <!-- textarea with height filling the rest of the page --> | |
| <textarea id="output" rows="20"></textarea> | |
| <br /><br /> | |
| <div class="cell-version"> | |
| <span> | |
| | Build time: <span class="nav-link">@GIT_DATE@</span> | Commit hash: | |
| <a target="_blank" | |
| 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 target="_blank" | |
| class="nav-link" | |
| href="https://github.com/ggerganov/whisper.cpp/tree/master/examples/whisper.wasm" | |
| >Source Code</a | |
| > | |
| | | |
| </span> | |
| </div> | |
| </div> | |
| <script type="text/javascript" src="helpers.js"></script> | |
| <script type="text/javascript"> | |
| document.addEventListener("DOMContentLoaded", () => { | |
| //check is shared array buffer is supported | |
| if (!window.SharedArrayBuffer) { | |
| document.querySelector("#warning").style.display = "block"; | |
| } | |
| }); | |
| // TODO: convert audio buffer to WAV | |
| function setAudio(audio) { | |
| //if (audio) { | |
| // // convert to 16-bit PCM | |
| // var blob = new Blob([audio], { type: 'audio/wav' }); | |
| // var url = URL.createObjectURL(blob); | |
| // document.getElementById('source').src = url; | |
| // document.getElementById('audio').hidden = false; | |
| // document.getElementById('audio').loop = false; | |
| // document.getElementById('audio').load(); | |
| //} else { | |
| // document.getElementById('audio').hidden = true; | |
| //} | |
| } | |
| function changeInput(input) { | |
| if (input == "file") { | |
| document.getElementById("input_file").style.display = "block"; | |
| document.getElementById("input_mic").style.display = "none"; | |
| document.getElementById("progress").style.display = "none"; | |
| } else { | |
| document.getElementById("input_file").style.display = "none"; | |
| document.getElementById("input_mic").style.display = "block"; | |
| document.getElementById("progress").style.display = "block"; | |
| } | |
| } | |
| var Module = { | |
| print: printTextarea, | |
| printErr: printTextarea, | |
| setStatus: function (text) { | |
| printTextarea("js: " + text); | |
| }, | |
| monitorRunDependencies: function (left) {}, | |
| }; | |
| // web audio context | |
| var context = null; | |
| // audio data | |
| var audio = null; | |
| // the whisper instance | |
| var instance = null; | |
| var model_whisper = ""; | |
| // helper function | |
| function convertTypedArray(src, type) { | |
| var buffer = new ArrayBuffer(src.byteLength); | |
| var baseView = new src.constructor(buffer).set(src); | |
| return new type(buffer); | |
| } | |
| // | |
| // load model | |
| // | |
| 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); | |
| //model_whisper = fname; | |
| document.getElementById("model-whisper-status").innerHTML = | |
| 'loaded "' + model_whisper + '"!'; | |
| printTextarea( | |
| "storeFS: stored model: " + fname + " size: " + buf.length | |
| ); | |
| document.getElementById("model").innerHTML = | |
| "Model fetched: " + model_whisper; | |
| } | |
| function loadFile(event, fname) { | |
| var file = event.target.files[0] || null; | |
| if (file == null) { | |
| return; | |
| } | |
| printTextarea( | |
| "loadFile: loading model: " + | |
| file.name + | |
| ", size: " + | |
| file.size + | |
| " bytes" | |
| ); | |
| printTextarea("loadFile: please wait ..."); | |
| var reader = new FileReader(); | |
| reader.onload = function (event) { | |
| var buf = new Uint8Array(reader.result); | |
| storeFS(fname, buf); | |
| }; | |
| reader.readAsArrayBuffer(file); | |
| document.getElementById("fetch-whisper-tiny-en").style.display = "none"; | |
| document.getElementById("fetch-whisper-base-en").style.display = "none"; | |
| document.getElementById("fetch-whisper-small-en").style.display = | |
| "none"; | |
| document.getElementById("fetch-whisper-tiny").style.display = "none"; | |
| document.getElementById("fetch-whisper-base").style.display = "none"; | |
| document.getElementById("fetch-whisper-small").style.display = "none"; | |
| document.getElementById("fetch-whisper-tiny-en-q5_1").style.display = | |
| "none"; | |
| document.getElementById("fetch-whisper-tiny-q5_1").style.display = | |
| "none"; | |
| document.getElementById("fetch-whisper-base-en-q5_1").style.display = | |
| "none"; | |
| document.getElementById("fetch-whisper-base-q5_1").style.display = | |
| "none"; | |
| document.getElementById("fetch-whisper-small-en-q5_1").style.display = | |
| "none"; | |
| document.getElementById("fetch-whisper-small-q5_1").style.display = | |
| "none"; | |
| document.getElementById("fetch-whisper-medium-en-q5_0").style.display = | |
| "none"; | |
| document.getElementById("fetch-whisper-medium-q5_0").style.display = | |
| "none"; | |
| document.getElementById("fetch-whisper-large-q5_0").style.display = | |
| "none"; | |
| document.getElementById("whisper-file").style.display = "none"; | |
| document.getElementById("model-whisper-status").innerHTML = | |
| "loaded model: " + file.name; | |
| } | |
| function loadWhisper(model) { | |
| const baseURL = | |
| "https://huggingface.co/ggerganov/whisper.cpp/resolve/main"; | |
| let urls = { | |
| "tiny.en": `${baseURL}/ggml-tiny.en.bin`, | |
| tiny: `${baseURL}/ggml-tiny.bin`, | |
| "base.en": `${baseURL}/ggml-base.en.bin`, | |
| base: `${baseURL}/ggml-base.bin`, | |
| "small.en": `${baseURL}/ggml-small.en.bin`, | |
| small: `${baseURL}/ggml-small.bin`, | |
| "tiny-en-q5_1": `${baseURL}/ggml-model-whisper-tiny.en-q5_1.bin`, | |
| "tiny-q5_1": `${baseURL}/ggml-model-whisper-tiny-q5_1.bin`, | |
| "base-en-q5_1": `${baseURL}/ggml-model-whisper-base.en-q5_1.bin`, | |
| "base-q5_1": `${baseURL}/ggml-model-whisper-base-q5_1.bin`, | |
| "small-en-q5_1": `${baseURL}/ggml-model-whisper-small.en-q5_1.bin`, | |
| "small-q5_1": `${baseURL}/ggml-model-whisper-small-q5_1.bin`, | |
| "medium-en-q5_0": `${baseURL}/ggml-model-whisper-medium.en-q5_0.bin`, | |
| "medium-q5_0": `${baseURL}/ggml-model-whisper-medium-q5_0.bin`, | |
| "large-q5_0": `${baseURL}/ggml-model-whisper-large-q5_0.bin`, | |
| }; | |
| let sizes = { | |
| "tiny.en": 75, | |
| tiny: 75, | |
| "base.en": 142, | |
| base: 142, | |
| "small.en": 466, | |
| small: 466, | |
| "tiny-en-q5_1": 31, | |
| "tiny-q5_1": 31, | |
| "base-en-q5_1": 57, | |
| "base-q5_1": 57, | |
| "small-en-q5_1": 182, | |
| "small-q5_1": 182, | |
| "medium-en-q5_0": 515, | |
| "medium-q5_0": 515, | |
| "large-q5_0": 1030, | |
| }; | |
| 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"; | |
| document.getElementById("fetch-whisper-small-en").style.display = | |
| "none"; | |
| document.getElementById("fetch-whisper-tiny").style.display = "none"; | |
| document.getElementById("fetch-whisper-base").style.display = "none"; | |
| document.getElementById("fetch-whisper-small").style.display = "none"; | |
| document.getElementById("fetch-whisper-tiny-en-q5_1").style.display = | |
| "none"; | |
| document.getElementById("fetch-whisper-tiny-q5_1").style.display = | |
| "none"; | |
| document.getElementById("fetch-whisper-base-en-q5_1").style.display = | |
| "none"; | |
| document.getElementById("fetch-whisper-base-q5_1").style.display = | |
| "none"; | |
| document.getElementById("fetch-whisper-small-en-q5_1").style.display = | |
| "none"; | |
| document.getElementById("fetch-whisper-small-q5_1").style.display = | |
| "none"; | |
| document.getElementById("fetch-whisper-medium-en-q5_0").style.display = | |
| "none"; | |
| document.getElementById("fetch-whisper-medium-q5_0").style.display = | |
| "none"; | |
| document.getElementById("fetch-whisper-large-q5_0").style.display = | |
| "none"; | |
| document.getElementById("whisper-file").style.display = "none"; | |
| document.getElementById("model-whisper-status").innerHTML = | |
| "loading model: " + 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"; | |
| el = document.getElementById("fetch-whisper-small-en"); | |
| if (el) el.style.display = "inline-block"; | |
| el = document.getElementById("fetch-whisper-tiny"); | |
| if (el) el.style.display = "inline-block"; | |
| el = document.getElementById("fetch-whisper-base"); | |
| if (el) el.style.display = "inline-block"; | |
| el = document.getElementById("fetch-whisper-small"); | |
| if (el) el.style.display = "inline-block"; | |
| el = document.getElementById("fetch-whisper-tiny-en-q5_1"); | |
| if (el) el.style.display = "inline-block"; | |
| el = document.getElementById("fetch-whisper-tiny-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"; | |
| el = document.getElementById("fetch-whisper-base-q5_1"); | |
| if (el) el.style.display = "inline-block"; | |
| el = document.getElementById("fetch-whisper-small-en-q5_1"); | |
| if (el) el.style.display = "inline-block"; | |
| el = document.getElementById("fetch-whisper-small-q5_1"); | |
| if (el) el.style.display = "inline-block"; | |
| el = document.getElementById("fetch-whisper-medium-en-q5_0"); | |
| if (el) el.style.display = "inline-block"; | |
| el = document.getElementById("fetch-whisper-medium-q5_0"); | |
| if (el) el.style.display = "inline-block"; | |
| el = document.getElementById("fetch-whisper-large-q5_0"); | |
| if (el) el.style.display = "inline-block"; | |
| el = document.getElementById("whisper-file"); | |
| if (el) el.style.display = "inline-block"; | |
| el = document.getElementById("model-whisper-status"); | |
| if (el) el.innerHTML = ""; | |
| }; | |
| loadRemote( | |
| url, | |
| dst, | |
| size_mb, | |
| cbProgress, | |
| storeFS, | |
| cbCancel, | |
| printTextarea | |
| ); | |
| } | |
| // | |
| // audio file | |
| // | |
| const kMaxAudio_s = 30 * 60; | |
| const kMaxRecording_s = 2 * 60; | |
| const kSampleRate = 16000; | |
| window.AudioContext = window.AudioContext || window.webkitAudioContext; | |
| window.OfflineAudioContext = | |
| window.OfflineAudioContext || window.webkitOfflineAudioContext; | |
| function loadAudio(event) { | |
| if (!context) { | |
| context = new AudioContext({ | |
| sampleRate: kSampleRate, | |
| channelCount: 1, | |
| echoCancellation: false, | |
| autoGainControl: true, | |
| noiseSuppression: true, | |
| }); | |
| } | |
| var file = event.target.files[0] || null; | |
| if (file == null) { | |
| return; | |
| } | |
| printTextarea( | |
| "js: loading audio: " + file.name + ", size: " + file.size + " bytes" | |
| ); | |
| printTextarea("js: please wait ..."); | |
| var reader = new FileReader(); | |
| reader.onload = function (event) { | |
| var buf = new Uint8Array(reader.result); | |
| 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 loaded, size: " + audio.length); | |
| // truncate to first 30 seconds | |
| if (audio.length > kMaxAudio_s * kSampleRate) { | |
| audio = audio.slice(0, kMaxAudio_s * kSampleRate); | |
| printTextarea( | |
| "js: truncated audio to first " + kMaxAudio_s + " seconds" | |
| ); | |
| } | |
| setAudio(audio); | |
| }); | |
| }, | |
| function (e) { | |
| printTextarea("js: error decoding audio: " + e); | |
| audio = null; | |
| setAudio(audio); | |
| } | |
| ); | |
| }; | |
| reader.readAsArrayBuffer(file); | |
| } | |
| // | |
| // microphone | |
| // | |
| var mediaRecorder = null; | |
| var doRecording = false; | |
| var startTime = 0; | |
| function stopRecording() { | |
| doRecording = false; | |
| } | |
| // record up to kMaxRecording_s seconds of audio from the microphone | |
| // check if doRecording is false every 1000 ms and stop recording if so | |
| // update progress information | |
| function startRecording() { | |
| if (!context) { | |
| context = new AudioContext({ | |
| sampleRate: kSampleRate, | |
| channelCount: 1, | |
| echoCancellation: false, | |
| autoGainControl: true, | |
| noiseSuppression: true, | |
| }); | |
| } | |
| document.getElementById("start").disabled = true; | |
| document.getElementById("stop").disabled = false; | |
| document.getElementById("progress-bar").style.width = "0%"; | |
| document.getElementById("progress-text").innerHTML = "0%"; | |
| 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); | |
| }; | |
| mediaRecorder.onstop = function (e) { | |
| var blob = new Blob(chunks, { type: "audio/ogg; codecs=opus" }); | |
| chunks = []; | |
| document.getElementById("start").disabled = false; | |
| document.getElementById("stop").disabled = true; | |
| var reader = new FileReader(); | |
| reader.onload = function (event) { | |
| var buf = new Uint8Array(reader.result); | |
| 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 | |
| ); | |
| // truncate to first 30 seconds | |
| if (audio.length > kMaxRecording_s * kSampleRate) { | |
| audio = audio.slice(0, kMaxRecording_s * kSampleRate); | |
| printTextarea( | |
| "js: truncated audio to first " + | |
| kMaxRecording_s + | |
| " seconds" | |
| ); | |
| } | |
| setAudio(audio); | |
| }); | |
| }, | |
| function (e) { | |
| printTextarea("js: error decoding audio: " + e); | |
| audio = null; | |
| setAudio(audio); | |
| } | |
| ); | |
| }; | |
| reader.readAsArrayBuffer(blob); | |
| }; | |
| mediaRecorder.start(); | |
| }) | |
| .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("progress-bar").style.width = | |
| (100 * (Date.now() - startTime)) / 1000 / kMaxRecording_s + "%"; | |
| document.getElementById("progress-text").innerHTML = | |
| ((100 * (Date.now() - startTime)) / 1000 / kMaxRecording_s).toFixed( | |
| 0 | |
| ) + "%"; | |
| }, 1000); | |
| printTextarea("js: recording ..."); | |
| setTimeout(function () { | |
| if (doRecording) { | |
| printTextarea( | |
| "js: recording stopped after " + kMaxRecording_s + " seconds" | |
| ); | |
| stopRecording(); | |
| } | |
| }, kMaxRecording_s * 1000); | |
| } | |
| // | |
| // transcribe | |
| // | |
| var nthreads = 8; | |
| function changeThreads(value) { | |
| nthreads = value; | |
| document.getElementById("threads-value").innerHTML = nthreads; | |
| } | |
| function onProcess(translate) { | |
| if (!instance) { | |
| instance = Module.init("whisper.bin"); | |
| if (instance) { | |
| printTextarea("js: whisper initialized, instance: " + instance); | |
| document.getElementById("model").innerHTML = | |
| "Model loaded: " + model_whisper; | |
| } | |
| } | |
| if (!instance) { | |
| printTextarea("js: failed to initialize whisper"); | |
| return; | |
| } | |
| if (!audio) { | |
| printTextarea("js: no audio data"); | |
| return; | |
| } | |
| if (instance) { | |
| printTextarea(""); | |
| printTextarea("js: processing - this might take a while ..."); | |
| printTextarea(""); | |
| setTimeout(function () { | |
| var ret = Module.full_default( | |
| instance, | |
| audio, | |
| document.getElementById("language").value, | |
| nthreads, | |
| translate | |
| ); | |
| console.log("js: full_default returned: " + ret); | |
| if (ret) { | |
| printTextarea("js: whisper returned: " + ret); | |
| } | |
| }, 100); | |
| } | |
| } | |
| </script> | |
| <script type="text/javascript" src="main.js"></script> | |
| </body> | |
| </html> | |