mirror of
https://github.com/ggerganov/whisper.cpp.git
synced 2025-02-21 01:21:26 +00:00
close #109 : add fetching of the model over HTTP (whisper.wasm)
This commit is contained in:
Georgi Gerganov
parent
326573de9a
commit
dad109c3f1
@ -46,7 +46,12 @@
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<div id="model">
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Model:
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<input type="file" id="file" name="file" onchange="loadFile(event, 'ggml.bin')" />
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<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="file" name="file" onchange="loadFile(event, 'whisper.bin')" />
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</div>
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<br>
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@ -258,6 +263,25 @@
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// load model
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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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// write to WASM file using FS_createDataFile
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// if the file exists, delete it
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try {
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Module.FS_unlink(fname);
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} catch (e) {
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// ignore
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}
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Module.FS_createDataFile("/", fname, buf, true, true);
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model_fname = fname;
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printTextarea('js: 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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@ -270,21 +294,193 @@
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var reader = new FileReader();
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reader.onload = function(event) {
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var buf = new Uint8Array(reader.result);
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// write to WASM file using whisper.FS_createDataFile
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// if the file exists, delete it
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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_fname = file.name;
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printTextarea('js: loaded model: ' + model_fname + ' size: ' + buf.length);
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storeFS(fname, buf);
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}
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reader.readAsArrayBuffer(file);
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}
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// fetch a remote file from remote URL using the Fetch API
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async function fetchRemote(url, elProgress) {
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printTextarea('js: downloading with fetch()...');
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const response = await fetch(
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url,
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{
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method: 'GET',
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headers: {
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'Content-Type': 'application/octet-stream',
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},
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}
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);
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if (!response.ok) {
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printTextarea('js: failed to fetch ' + url);
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return;
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}
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const contentLength = response.headers.get('content-length');
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const total = parseInt(contentLength, 10);
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const reader = response.body.getReader();
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var chunks = [];
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var receivedLength = 0;
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var progressLast = -1;
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while (true) {
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const { done, value } = await reader.read();
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if (done) {
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break;
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}
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chunks.push(value);
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receivedLength += value.length;
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if (contentLength) {
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// update progress bar element with the new percentage
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elProgress.innerHTML = Math.round((receivedLength / total) * 100) + '%';
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var progressCur = Math.round((receivedLength / total) * 10);
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if (progressCur != progressLast) {
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printTextarea('js: fetching ' + 10*progressCur + '% ...');
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progressLast = progressCur;
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}
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}
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}
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var chunksAll = new Uint8Array(receivedLength);
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var position = 0;
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for (var chunk of chunks) {
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chunksAll.set(chunk, position);
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position += chunk.length;
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}
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return chunksAll;
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}
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// load remote data
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// - check if the data is already in the IndexedDB
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// - if not, fetch it from the remote URL and store it in the IndexedDB
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// - store it in WASM memory
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function loadRemote(url, dst, elProgress, size_mb) {
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// query the storage quota and print it
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navigator.storage.estimate().then(function (estimate) {
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printTextarea('js: storage quota: ' + estimate.quota + ' bytes');
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printTextarea('js: storage usage: ' + estimate.usage + ' bytes');
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});
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// check if the data is already in the IndexedDB
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var request = indexedDB.open(dbName, dbVersion);
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request.onupgradeneeded = function (event) {
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var db = event.target.result;
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if (db.version == 1) {
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var objectStore = db.createObjectStore('models', { autoIncrement: false });
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printTextarea('js: created IndexedDB ' + db.name + ' version ' + db.version);
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} else {
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// clear the database
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var objectStore = event.currentTarget.transaction.objectStore('models');
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objectStore.clear();
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printTextarea('js: cleared IndexedDB ' + db.name + ' version ' + db.version);
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}
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};
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request.onsuccess = function (event) {
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var db = event.target.result;
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var transaction = db.transaction(['models'], 'readonly');
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var objectStore = transaction.objectStore('models');
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var request = objectStore.get(url);
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request.onsuccess = function (event) {
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if (request.result) {
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printTextarea('js: "' + url + '" is already in the IndexedDB');
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storeFS(dst, request.result);
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} else {
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// data is not in the IndexedDB
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printTextarea('js: "' + url + '" is not in the IndexedDB');
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// alert and ask the user to confirm
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if (!confirm('You are about to download ' + size_mb + ' MB of data.\nThe model data will be cached in the browser for future use.\n\nPress OK to continue.')) {
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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-tiny'); 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-base'); if (el) el.style.display = 'inline-block';
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return;
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}
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fetchRemote(url, elProgress).then(function (data) {
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if (data) {
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// store the data in the IndexedDB
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var request = indexedDB.open(dbName, dbVersion);
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request.onsuccess = function (event) {
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var db = event.target.result;
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var transaction = db.transaction(['models'], 'readwrite');
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var objectStore = transaction.objectStore('models');
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var request = objectStore.put(data, url);
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request.onsuccess = function (event) {
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printTextarea('js: "' + url + '" stored in the IndexedDB');
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storeFS(dst, data);
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};
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request.onerror = function (event) {
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printTextarea('js: failed to store "' + url + '" in the IndexedDB');
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};
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};
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}
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});
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}
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};
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request.onerror = function (event) {
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printTextarea('js: failed to get data from the IndexedDB');
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};
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};
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request.onerror = function (event) {
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printTextarea('js: failed to open IndexedDB');
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};
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request.onblocked = function (event) {
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printTextarea('js: failed to open IndexedDB: blocked');
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};
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request.onabort = function (event) {
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printTextarea('js: failed to open IndexedDB: abort');
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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://whisper.ggerganov.com/ggml-model-whisper-tiny.en.bin',
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'tiny': 'https://whisper.ggerganov.com/ggml-model-whisper-tiny.bin',
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'base.en': 'https://whisper.ggerganov.com/ggml-model-whisper-base.en.bin',
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'base': 'https://whisper.ggerganov.com/ggml-model-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 el = document.getElementById('fetch-whisper-progress');
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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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loadRemote(url, dst, el, size_mb);
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}
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//
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// audio file
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//
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@ -446,7 +642,7 @@
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function onProcess(translate) {
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if (!instance) {
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instance = Module.init('ggml.bin');
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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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