@ -46,7 +46,12 @@
< div id = "model" >
< div id = "model" >
Model:
Model:
< input type = "file" id = "file" name = "file" onchange = "loadFile(event, 'ggml.bin')" / >
< 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 >
< span id = "fetch-whisper-progress" > < / span >
< input type = "file" id = "file" name = "file" onchange = "loadFile(event, 'whisper.bin')" / >
< / div >
< / div >
< br >
< br >
@ -258,6 +263,25 @@
// load model
// 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_fname = fname;
printTextarea('js: stored model: ' + fname + ' size: ' + buf.length);
}
function loadFile(event, fname) {
function loadFile(event, fname) {
var file = event.target.files[0] || null;
var file = event.target.files[0] || null;
if (file == null) {
if (file == null) {
@ -270,19 +294,191 @@
var reader = new FileReader();
var reader = new FileReader();
reader.onload = function(event) {
reader.onload = function(event) {
var buf = new Uint8Array(reader.result);
var buf = new Uint8Array(reader.result);
storeFS(fname, buf);
}
reader.readAsArrayBuffer(file);
}
// write to WASM file using whisper.FS_createDataFile
// fetch a remote file from remote URL using the Fetch API
// if the file exists, delete it
async function fetchRemote(url, elProgress) {
try {
printTextarea('js: downloading with fetch()...');
Module.FS_unlink(fname);
} catch (e) {
const response = await fetch(
url,
{
method: 'GET',
headers: {
'Content-Type': 'application/octet-stream',
},
}
}
Module.FS_createDataFile("/", fname, buf, true, true);
);
model_fname = file.name;
if (!response.ok) {
printTextarea('js: loaded model: ' + model_fname + ' size: ' + buf.length);
printTextarea('js: failed to fetch ' + url);
return;
}
}
reader.readAsArrayBuffer(file);
const contentLength = response.headers.get('content-length');
const total = parseInt(contentLength, 10);
const reader = response.body.getReader();
var chunks = [];
var receivedLength = 0;
var progressLast = -1;
while (true) {
const { done, value } = await reader.read();
if (done) {
break;
}
chunks.push(value);
receivedLength += value.length;
if (contentLength) {
// update progress bar element with the new percentage
elProgress.innerHTML = Math.round((receivedLength / total) * 100) + '%';
var progressCur = Math.round((receivedLength / total) * 10);
if (progressCur != progressLast) {
printTextarea('js: fetching ' + 10*progressCur + '% ...');
progressLast = progressCur;
}
}
}
var chunksAll = new Uint8Array(receivedLength);
var position = 0;
for (var chunk of chunks) {
chunksAll.set(chunk, position);
position += chunk.length;
}
return chunksAll;
}
// load remote data
// - check if the data is already in the IndexedDB
// - if not, fetch it from the remote URL and store it in the IndexedDB
// - store it in WASM memory
function loadRemote(url, dst, elProgress, size_mb) {
// query the storage quota and print it
navigator.storage.estimate().then(function (estimate) {
printTextarea('js: storage quota: ' + estimate.quota + ' bytes');
printTextarea('js: storage usage: ' + estimate.usage + ' bytes');
});
// check if the data is already in the IndexedDB
var request = indexedDB.open(dbName, dbVersion);
request.onupgradeneeded = function (event) {
var db = event.target.result;
if (db.version == 1) {
var objectStore = db.createObjectStore('models', { autoIncrement: false });
printTextarea('js: created IndexedDB ' + db.name + ' version ' + db.version);
} else {
// clear the database
var objectStore = event.currentTarget.transaction.objectStore('models');
objectStore.clear();
printTextarea('js: cleared IndexedDB ' + db.name + ' version ' + db.version);
}
};
request.onsuccess = function (event) {
var db = event.target.result;
var transaction = db.transaction(['models'], 'readonly');
var objectStore = transaction.objectStore('models');
var request = objectStore.get(url);
request.onsuccess = function (event) {
if (request.result) {
printTextarea('js: "' + url + '" is already in the IndexedDB');
storeFS(dst, request.result);
} else {
// data is not in the IndexedDB
printTextarea('js: "' + url + '" is not in the IndexedDB');
// alert and ask the user to confirm
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.')) {
var el;
el = document.getElementById('fetch-whisper-tiny-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-en'); if (el) el.style.display = 'inline-block';
el = document.getElementById('fetch-whisper-base'); if (el) el.style.display = 'inline-block';
return;
}
fetchRemote(url, elProgress).then(function (data) {
if (data) {
// store the data in the IndexedDB
var request = indexedDB.open(dbName, dbVersion);
request.onsuccess = function (event) {
var db = event.target.result;
var transaction = db.transaction(['models'], 'readwrite');
var objectStore = transaction.objectStore('models');
var request = objectStore.put(data, url);
request.onsuccess = function (event) {
printTextarea('js: "' + url + '" stored in the IndexedDB');
storeFS(dst, data);
};
request.onerror = function (event) {
printTextarea('js: failed to store "' + url + '" in the IndexedDB');
};
};
}
});
}
};
request.onerror = function (event) {
printTextarea('js: failed to get data from the IndexedDB');
};
};
request.onerror = function (event) {
printTextarea('js: failed to open IndexedDB');
};
request.onblocked = function (event) {
printTextarea('js: failed to open IndexedDB: blocked');
};
request.onabort = function (event) {
printTextarea('js: failed to open IndexedDB: abort');
};
}
function loadWhisper(model) {
let urls = {
'tiny.en': 'https://whisper.ggerganov.com/ggml-model-whisper-tiny.en.bin',
'tiny': 'https://whisper.ggerganov.com/ggml-model-whisper-tiny.bin',
'base.en': 'https://whisper.ggerganov.com/ggml-model-whisper-base.en.bin',
'base': 'https://whisper.ggerganov.com/ggml-model-whisper-base.bin',
};
let sizes = {
'tiny.en': 75,
'tiny': 75,
'base.en': 142,
'base': 142,
};
let url = urls[model];
let dst = 'whisper.bin';
let el = document.getElementById('fetch-whisper-progress');
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-tiny').style.display = 'none';
document.getElementById('fetch-whisper-base').style.display = 'none';
loadRemote(url, dst, el, size_mb);
}
}
//
//
@ -446,7 +642,7 @@
function onProcess(translate) {
function onProcess(translate) {
if (!instance) {
if (!instance) {
instance = Module.init('ggml .bin');
instance = Module.init('whisper .bin');
if (instance) {
if (instance) {
printTextarea("js: whisper initialized, instance: " + instance);
printTextarea("js: whisper initialized, instance: " + instance);