Spaces:
Runtime error
Runtime error
File size: 16,515 Bytes
05b45a5 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 |
export class AudioService {
constructor() {
this.mediaSource = null;
this.sourceBuffer = null;
this.audio = null;
this.controller = null;
this.eventListeners = new Map();
this.minimumPlaybackSize = 50000; // 50KB minimum before playback
this.textLength = 0;
this.shouldAutoplay = false;
this.CHARS_PER_CHUNK = 150; // Estimated chars per chunk
this.serverDownloadPath = null; // Server-side download path
this.pendingOperations = []; // Queue for buffer operations
}
async streamAudio(text, voice, speed, onProgress) {
try {
console.log('AudioService: Starting stream...', { text, voice, speed });
if (this.controller) {
this.controller.abort();
this.controller = null;
}
this.controller = new AbortController();
this.cleanup();
onProgress?.(0, 1); // Reset progress to 0
this.textLength = text.length;
this.shouldAutoplay = document.getElementById('autoplay-toggle').checked;
// Calculate expected number of chunks based on text length
const estimatedChunks = Math.max(1, Math.ceil(this.textLength / this.CHARS_PER_CHUNK));
console.log('AudioService: Making API call...', { text, voice, speed });
const response = await fetch('/v1/audio/speech', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({
input: text,
voice: voice,
response_format: 'mp3', // Always use mp3 for streaming playback
download_format: document.getElementById('format-select').value || 'mp3', // Format for final download
stream: true,
speed: speed,
return_download_link: true,
lang_code: document.getElementById('lang-select').value || undefined
}),
signal: this.controller.signal
});
console.log('AudioService: Got response', {
status: response.status,
headers: Object.fromEntries(response.headers.entries())
});
// Check for download path as soon as we get the response
const downloadPath = response.headers.get('x-download-path');
if (downloadPath) {
this.serverDownloadPath = `/v1${downloadPath}`;
console.log('Download path received:', this.serverDownloadPath);
}
if (!response.ok) {
const error = await response.json();
console.error('AudioService: API error', error);
throw new Error(error.detail?.message || 'Failed to generate speech');
}
await this.setupAudioStream(response.body, response, onProgress, estimatedChunks);
return this.audio;
} catch (error) {
this.cleanup();
throw error;
}
}
async setupAudioStream(stream, response, onProgress, estimatedChunks) {
this.audio = new Audio();
this.mediaSource = new MediaSource();
this.audio.src = URL.createObjectURL(this.mediaSource);
// Monitor for audio element errors
this.audio.addEventListener('error', (e) => {
console.error('Audio error:', this.audio.error);
});
this.audio.addEventListener('ended', () => {
this.dispatchEvent('ended');
});
return new Promise((resolve, reject) => {
this.mediaSource.addEventListener('sourceopen', async () => {
try {
this.sourceBuffer = this.mediaSource.addSourceBuffer('audio/mpeg');
this.sourceBuffer.mode = 'sequence';
this.sourceBuffer.addEventListener('updateend', () => {
this.processNextOperation();
});
await this.processStream(stream, response, onProgress, estimatedChunks);
resolve();
} catch (error) {
reject(error);
}
});
});
}
async processStream(stream, response, onProgress, estimatedChunks) {
const reader = stream.getReader();
let hasStartedPlaying = false;
let receivedChunks = 0;
try {
while (true) {
const {value, done} = await reader.read();
if (done) {
// Get final download path from header after stream is complete
const headers = Object.fromEntries(response.headers.entries());
console.log('Response headers at stream end:', headers);
const downloadPath = headers['x-download-path'];
if (downloadPath) {
// Prepend /v1 since the router is mounted there
this.serverDownloadPath = `/v1${downloadPath}`;
console.log('Download path received:', this.serverDownloadPath);
} else {
console.warn('No X-Download-Path header found. Available headers:',
Object.keys(headers).join(', '));
}
if (this.mediaSource.readyState === 'open') {
this.mediaSource.endOfStream();
}
// Signal completion
onProgress?.(estimatedChunks, estimatedChunks);
this.dispatchEvent('complete');
// Check if we should autoplay for small inputs that didn't trigger during streaming
if (this.shouldAutoplay && !hasStartedPlaying && this.sourceBuffer.buffered.length > 0) {
setTimeout(() => this.play(), 100);
}
setTimeout(() => {
this.dispatchEvent('downloadReady');
}, 800);
return;
}
receivedChunks++;
onProgress?.(receivedChunks, estimatedChunks);
try {
// Check for audio errors before proceeding
if (this.audio.error) {
console.error('Audio error detected:', this.audio.error);
continue; // Skip this chunk if audio is in error state
}
// Only remove old data if we're hitting quota errors
if (this.sourceBuffer.buffered.length > 0) {
const currentTime = this.audio.currentTime;
const start = this.sourceBuffer.buffered.start(0);
const end = this.sourceBuffer.buffered.end(0);
// Only remove if we have a lot of historical data
if (currentTime - start > 30) {
const removeEnd = Math.max(start, currentTime - 15);
if (removeEnd > start) {
await this.removeBufferRange(start, removeEnd);
}
}
}
await this.appendChunk(value);
if (!hasStartedPlaying && this.sourceBuffer.buffered.length > 0) {
hasStartedPlaying = true;
if (this.shouldAutoplay) {
setTimeout(() => this.play(), 100);
}
}
} catch (error) {
if (error.name === 'QuotaExceededError') {
// If we hit quota, try more aggressive cleanup
if (this.sourceBuffer.buffered.length > 0) {
const currentTime = this.audio.currentTime;
const start = this.sourceBuffer.buffered.start(0);
const removeEnd = Math.max(start, currentTime - 5);
if (removeEnd > start) {
await this.removeBufferRange(start, removeEnd);
// Retry append after removing data
try {
await this.appendChunk(value);
} catch (retryError) {
console.warn('Buffer error after cleanup:', retryError);
}
}
}
} else {
console.warn('Buffer error:', error);
}
}
}
} catch (error) {
if (error.name !== 'AbortError') {
throw error;
}
}
}
async removeBufferRange(start, end) {
// Double check that end is greater than start
if (end <= start) {
console.warn('Invalid buffer remove range:', {start, end});
return;
}
return new Promise((resolve) => {
const doRemove = () => {
try {
this.sourceBuffer.remove(start, end);
} catch (e) {
console.warn('Error removing buffer:', e);
}
resolve();
};
if (this.sourceBuffer.updating) {
this.sourceBuffer.addEventListener('updateend', () => {
doRemove();
}, { once: true });
} else {
doRemove();
}
});
}
async appendChunk(chunk) {
// Don't append if audio is in error state
if (this.audio.error) {
console.warn('Skipping chunk append due to audio error');
return;
}
return new Promise((resolve, reject) => {
const operation = { chunk, resolve, reject };
this.pendingOperations.push(operation);
if (!this.sourceBuffer.updating) {
this.processNextOperation();
}
});
}
processNextOperation() {
if (this.sourceBuffer.updating || this.pendingOperations.length === 0) {
return;
}
// Don't process if audio is in error state
if (this.audio.error) {
console.warn("Skipping operation due to audio error");
return;
}
const operation = this.pendingOperations.shift();
try {
this.sourceBuffer.appendBuffer(operation.chunk);
// Set up event listeners
const onUpdateEnd = () => {
operation.resolve();
this.sourceBuffer.removeEventListener("updateend", onUpdateEnd);
this.sourceBuffer.removeEventListener(
"updateerror",
onUpdateError
);
// Process the next operation
this.processNextOperation();
};
const onUpdateError = (event) => {
operation.reject(event);
this.sourceBuffer.removeEventListener("updateend", onUpdateEnd);
this.sourceBuffer.removeEventListener(
"updateerror",
onUpdateError
);
// Decide whether to continue processing
if (event.name !== "InvalidStateError") {
this.processNextOperation();
}
};
this.sourceBuffer.addEventListener("updateend", onUpdateEnd);
this.sourceBuffer.addEventListener("updateerror", onUpdateError);
} catch (error) {
operation.reject(error);
// Only continue processing if it's not a fatal error
if (error.name !== "InvalidStateError") {
this.processNextOperation();
}
}
}
play() {
if (this.audio && this.audio.readyState >= 2 && !this.audio.error) {
const playPromise = this.audio.play();
if (playPromise) {
playPromise.catch(error => {
if (error.name !== 'AbortError') {
console.error('Playback error:', error);
}
});
}
this.dispatchEvent('play');
}
}
pause() {
if (this.audio) {
this.audio.pause();
this.dispatchEvent('pause');
}
}
seek(time) {
if (this.audio && !this.audio.error) {
const wasPlaying = !this.audio.paused;
this.audio.currentTime = time;
if (wasPlaying) {
this.play();
}
}
}
setVolume(volume) {
if (this.audio) {
this.audio.volume = Math.max(0, Math.min(1, volume));
}
}
getCurrentTime() {
return this.audio ? this.audio.currentTime : 0;
}
getDuration() {
return this.audio ? this.audio.duration : 0;
}
isPlaying() {
return this.audio ? !this.audio.paused : false;
}
addEventListener(event, callback) {
if (!this.eventListeners.has(event)) {
this.eventListeners.set(event, new Set());
}
this.eventListeners.get(event).add(callback);
if (this.audio && ['play', 'pause', 'ended', 'timeupdate'].includes(event)) {
this.audio.addEventListener(event, callback);
}
}
removeEventListener(event, callback) {
const listeners = this.eventListeners.get(event);
if (listeners) {
listeners.delete(callback);
}
if (this.audio) {
this.audio.removeEventListener(event, callback);
}
}
dispatchEvent(event, data) {
const listeners = this.eventListeners.get(event);
if (listeners) {
listeners.forEach(callback => callback(data));
}
}
cancel() {
if (this.controller) {
this.controller.abort();
this.controller = null;
}
if (this.audio) {
this.audio.pause();
this.audio.src = "";
this.audio = null;
}
if (this.mediaSource && this.mediaSource.readyState === "open") {
try {
this.mediaSource.endOfStream();
} catch (e) {
// Ignore errors during cleanup
}
}
this.mediaSource = null;
if (this.sourceBuffer) {
this.sourceBuffer.removeEventListener("updateend", () => {});
this.sourceBuffer.removeEventListener("updateerror", () => {});
this.sourceBuffer = null;
}
this.serverDownloadPath = null;
this.pendingOperations = [];
}
cleanup() {
if (this.audio) {
this.eventListeners.forEach((listeners, event) => {
listeners.forEach((callback) => {
this.audio.removeEventListener(event, callback);
});
});
this.audio.pause();
this.audio.src = "";
this.audio = null;
}
if (this.mediaSource && this.mediaSource.readyState === "open") {
try {
this.mediaSource.endOfStream();
} catch (e) {
// Ignore errors during cleanup
}
}
this.mediaSource = null;
if (this.sourceBuffer) {
this.sourceBuffer.removeEventListener("updateend", () => {});
this.sourceBuffer.removeEventListener("updateerror", () => {});
this.sourceBuffer = null;
}
this.serverDownloadPath = null;
this.pendingOperations = [];
}
getDownloadUrl() {
if (!this.serverDownloadPath) {
console.warn('No download path available');
return null;
}
return this.serverDownloadPath;
}
}
export default AudioService;
|