Spaces:
Running
Running
File size: 13,667 Bytes
b0b150b |
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 |
import React, { useState, useRef, useEffect, useCallback } from 'react';
import { Box, IconButton, Slider, Typography, Tooltip, CircularProgress } from '@mui/material';
import {
VolumeUp as SpeakerIcon,
PlayArrow as PlayIcon,
Pause as PauseIcon,
Stop as StopIcon,
VolumeOff as MuteIcon
} from '@mui/icons-material';
import { generateTTS, getTTSAudioURL } from '../api/client';
/**
* TTSPlayer Component
* Plays text-to-speech audio with playback controls and word highlighting
*/
function TTSPlayer({ text, provider = 'elevenlabs', autoPlay = false, onError, onWordChange }) {
const [isPlaying, setIsPlaying] = useState(false);
const [isLoading, setIsLoading] = useState(false);
const [progress, setProgress] = useState(0);
const [volume, setVolume] = useState(1);
const [audioURL, setAudioURL] = useState(null);
const [duration, setDuration] = useState(0);
const [currentWordIndex, setCurrentWordIndex] = useState(-1);
const [words, setWords] = useState([]);
const audioRef = useRef(null);
const utteranceRef = useRef(null);
const wordTimerRef = useRef(null);
// Parse text into words on mount
useEffect(() => {
if (text) {
// Split text into words while preserving punctuation
const wordList = text.split(/(\s+)/).filter(w => w.trim().length > 0);
setWords(wordList);
}
}, [text]);
useEffect(() => {
if (autoPlay && text) {
handlePlay();
}
return () => {
cleanup();
};
}, []);
const cleanup = useCallback(() => {
if (audioRef.current) {
audioRef.current.pause();
audioRef.current = null;
}
if (window.speechSynthesis) {
window.speechSynthesis.cancel();
}
if (wordTimerRef.current) {
clearInterval(wordTimerRef.current);
wordTimerRef.current = null;
}
setCurrentWordIndex(-1);
}, []);
const handlePlay = async () => {
if (!audioURL) {
// Generate TTS first
setIsLoading(true);
try {
const result = await generateTTS(text, provider);
if (result.success) {
if (provider === 'web_speech' || result.client_side) {
// Use Web Speech API with word highlighting
speakWithWebSpeech(text);
} else {
// Use ElevenLabs audio file
const url = getTTSAudioURL(result.audio_url.split('/').pop());
setAudioURL(url);
playAudio(url);
}
} else {
// Fallback to Web Speech API
if (result.fallback === 'web_speech') {
speakWithWebSpeech(text);
} else {
throw new Error(result.error || 'TTS generation failed');
}
}
} catch (error) {
console.error('TTS error:', error);
if (onError) onError(error);
// Final fallback to Web Speech API
speakWithWebSpeech(text);
} finally {
setIsLoading(false);
}
} else {
// Resume existing audio
if (audioRef.current) {
audioRef.current.play();
setIsPlaying(true);
}
}
};
const playAudio = (url) => {
const audio = new Audio(url);
audioRef.current = audio;
audio.volume = volume;
audio.addEventListener('loadedmetadata', () => {
setDuration(audio.duration);
});
audio.addEventListener('timeupdate', () => {
const progressPercent = (audio.currentTime / audio.duration) * 100;
setProgress(progressPercent);
// Estimate word highlighting for audio playback
if (words.length > 0) {
const wordIndex = Math.floor((progressPercent / 100) * words.length);
if (wordIndex !== currentWordIndex && wordIndex < words.length) {
setCurrentWordIndex(wordIndex);
if (onWordChange) onWordChange(wordIndex, words[wordIndex]);
}
}
});
audio.addEventListener('ended', () => {
setIsPlaying(false);
setProgress(0);
setCurrentWordIndex(-1);
if (onWordChange) onWordChange(-1, null);
});
audio.addEventListener('error', (e) => {
console.error('Audio playback error:', e);
// Fallback to Web Speech
speakWithWebSpeech(text);
});
audio.play().catch(err => {
console.error('Audio play failed:', err);
speakWithWebSpeech(text);
});
setIsPlaying(true);
};
const speakWithWebSpeech = (text) => {
if ('speechSynthesis' in window) {
// Cancel any ongoing speech
window.speechSynthesis.cancel();
const utterance = new SpeechSynthesisUtterance(text);
utteranceRef.current = utterance;
utterance.volume = volume;
utterance.rate = 1.0;
utterance.pitch = 1.0;
// Word boundary event for real-time word highlighting
let currentCharIndex = 0;
utterance.onboundary = (event) => {
if (event.name === 'word') {
// Find which word is being spoken based on character index
const charIndex = event.charIndex;
let wordIdx = 0;
let charCount = 0;
for (let i = 0; i < words.length; i++) {
charCount += words[i].length + 1; // +1 for space
if (charCount > charIndex) {
wordIdx = i;
break;
}
}
setCurrentWordIndex(wordIdx);
if (onWordChange) onWordChange(wordIdx, words[wordIdx]);
// Update progress
const progressPercent = ((wordIdx + 1) / words.length) * 100;
setProgress(progressPercent);
}
};
utterance.onstart = () => {
setIsPlaying(true);
setCurrentWordIndex(0);
if (onWordChange && words.length > 0) onWordChange(0, words[0]);
};
utterance.onend = () => {
setIsPlaying(false);
setProgress(100);
setCurrentWordIndex(-1);
if (onWordChange) onWordChange(-1, null);
// Reset progress after a short delay
setTimeout(() => setProgress(0), 500);
};
utterance.onerror = (error) => {
console.error('Web Speech error:', error);
setIsPlaying(false);
setCurrentWordIndex(-1);
if (onError) onError(error);
};
window.speechSynthesis.speak(utterance);
} else {
alert('Text-to-speech is not supported in your browser');
}
};
const handlePause = () => {
if (audioRef.current) {
audioRef.current.pause();
setIsPlaying(false);
} else if (window.speechSynthesis) {
window.speechSynthesis.pause();
setIsPlaying(false);
}
};
const handleResume = () => {
if (audioRef.current) {
audioRef.current.play();
setIsPlaying(true);
} else if (window.speechSynthesis) {
window.speechSynthesis.resume();
setIsPlaying(true);
}
};
const handleStop = () => {
cleanup();
setIsPlaying(false);
setProgress(0);
setAudioURL(null);
};
const handleVolumeChange = (event, newValue) => {
setVolume(newValue);
if (audioRef.current) {
audioRef.current.volume = newValue;
}
};
const handleProgressChange = (event, newValue) => {
if (audioRef.current && duration) {
audioRef.current.currentTime = (newValue / 100) * duration;
setProgress(newValue);
}
};
// Render highlighted text
const renderHighlightedText = () => {
if (!isPlaying || words.length === 0) return null;
return (
<Box sx={{
mt: 1,
p: 1.5,
bgcolor: 'rgba(139, 92, 246, 0.05)',
borderRadius: 2,
border: '1px solid rgba(139, 92, 246, 0.1)',
maxHeight: 100,
overflowY: 'auto',
fontSize: '0.9rem',
lineHeight: 1.8
}}>
{words.map((word, idx) => (
<span
key={idx}
style={{
padding: '2px 4px',
margin: '0 1px',
borderRadius: '4px',
backgroundColor: idx === currentWordIndex
? 'rgba(139, 92, 246, 0.4)'
: idx < currentWordIndex
? 'rgba(139, 92, 246, 0.1)'
: 'transparent',
color: idx === currentWordIndex
? 'white'
: 'inherit',
fontWeight: idx === currentWordIndex ? 600 : 400,
transition: 'all 0.15s ease'
}}
>
{word}
</span>
))}
</Box>
);
};
return (
<Box sx={{ width: '100%' }}>
<Box sx={{
display: 'flex',
alignItems: 'center',
gap: 1,
p: 1,
bgcolor: 'rgba(139, 92, 246, 0.05)',
borderRadius: 2,
border: '1px solid rgba(139, 92, 246, 0.2)',
minWidth: 200
}}>
{/* Play/Pause Button */}
<Tooltip title={isPlaying ? 'Pause' : 'Play'}>
<IconButton
onClick={isPlaying ? handlePause : handlePlay}
disabled={isLoading}
size="small"
sx={{
color: 'var(--primary)',
'&:hover': { bgcolor: 'rgba(139, 92, 246, 0.1)' }
}}
>
{isLoading ? (
<CircularProgress size={20} />
) : isPlaying ? (
<PauseIcon fontSize="small" />
) : (
<PlayIcon fontSize="small" />
)}
</IconButton>
</Tooltip>
{/* Progress Bar */}
<Box sx={{ flexGrow: 1, mx: 1 }}>
<Slider
value={progress}
onChange={handleProgressChange}
disabled={!audioRef.current}
size="small"
sx={{
color: 'var(--primary)',
'& .MuiSlider-thumb': {
width: 12,
height: 12
}
}}
/>
</Box>
{/* Stop Button */}
{isPlaying && (
<Tooltip title="Stop">
<IconButton
onClick={handleStop}
size="small"
sx={{
color: 'text.secondary',
'&:hover': { bgcolor: 'rgba(255, 255, 255, 0.05)' }
}}
>
<StopIcon fontSize="small" />
</IconButton>
</Tooltip>
)}
{/* Volume Control */}
<Box sx={{ display: 'flex', alignItems: 'center', width: 80 }}>
<IconButton size="small" sx={{ color: 'text.secondary' }}>
{volume === 0 ? <MuteIcon fontSize="small" /> : <SpeakerIcon fontSize="small" />}
</IconButton>
<Slider
value={volume}
onChange={handleVolumeChange}
min={0}
max={1}
step={0.1}
size="small"
sx={{
color: 'var(--primary)',
ml: 0.5,
'& .MuiSlider-thumb': {
width: 10,
height: 10
}
}}
/>
</Box>
</Box>
{/* Word Highlighting Display */}
{renderHighlightedText()}
</Box>
);
}
export default TTSPlayer;
|