js-tts-wrapper
Version:
A JavaScript/TypeScript library that provides a unified API for working with multiple cloud-based Text-to-Speech (TTS) services
87 lines (86 loc) • 2.35 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.AudioPlayback = void 0;
/**
* Utility class for audio playback
*/
class AudioPlayback {
constructor() {
Object.defineProperty(this, "audioElement", {
enumerable: true,
configurable: true,
writable: true,
value: null
});
}
/**
* Play audio from a URL
* @param url URL of the audio to play
* @param onStart Callback when playback starts
* @param onEnd Callback when playback ends
* @returns Promise that resolves when playback starts
*/
play(url, onStart, onEnd) {
return new Promise((resolve) => {
this.stop();
this.audioElement = new Audio(url);
this.audioElement.onplay = () => {
if (onStart)
onStart();
resolve();
};
this.audioElement.onended = () => {
if (onEnd)
onEnd();
};
this.audioElement.play();
});
}
/**
* Play audio from a Blob
* @param blob Audio blob
* @param onStart Callback when playback starts
* @param onEnd Callback when playback ends
* @returns Promise that resolves when playback starts
*/
playFromBlob(blob, onStart, onEnd) {
const url = URL.createObjectURL(blob);
return this.play(url, onStart, onEnd).then(() => {
// Clean up the URL when playback ends
if (this.audioElement) {
this.audioElement.onended = () => {
if (onEnd)
onEnd();
URL.revokeObjectURL(url);
};
}
});
}
/**
* Pause audio playback
*/
pause() {
if (this.audioElement) {
this.audioElement.pause();
}
}
/**
* Resume audio playback
*/
resume() {
if (this.audioElement) {
this.audioElement.play();
}
}
/**
* Stop audio playback
*/
stop() {
if (this.audioElement) {
this.audioElement.pause();
this.audioElement.currentTime = 0;
this.audioElement = null;
}
}
}
exports.AudioPlayback = AudioPlayback;