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| 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 | import type { EventEmitterForPlayerEvents, PlayerAdapter } from "peaks.js";
import debug from "debug";
import type { Debugger } from "debug";
import { getGlobalAudioContext } from "./getGlobalAudioContext";
export class PeaksAudioPlayerAdapter implements PlayerAdapter {
private htmlAudioElem: HTMLAudioElement;
private audioBuffer: AudioBuffer;
private static logger: Debugger = (() => {
const logger = debug("{PeaksAudioPlayerAdapter}");
// debug.enable("{PeaksAudioPlayerAdapter}");
return logger;
})();
private constructor(audioBlobSrc: string, audioBuffer: AudioBuffer) {
PeaksAudioPlayerAdapter.logger("constructor() called");
this.audioBuffer = audioBuffer;
this.htmlAudioElem = new Audio(audioBlobSrc);
}
static async fromArrayBuffer(arrayBuffer: ArrayBuffer): Promise<PeaksAudioPlayerAdapter> {
const blob = new Blob([arrayBuffer], { type: "audio/mpeg" });
const blobURL = URL.createObjectURL(blob);
const audioBuffer = await getGlobalAudioContext().decodeAudioData(arrayBuffer);
return new PeaksAudioPlayerAdapter(blobURL, audioBuffer);
}
getAudioBuffer() {
return this.audioBuffer;
}
async init(eventEmitter: EventEmitterForPlayerEvents): Promise<void> {
PeaksAudioPlayerAdapter.logger("init() called");
const loaded = new Promise<void>((resolve, reject) => {
this.htmlAudioElem.addEventListener("loadeddata", () => resolve());
this.htmlAudioElem.addEventListener("error", () => reject());
});
this.htmlAudioElem.addEventListener("ended", () => {
PeaksAudioPlayerAdapter.logger("ended event");
eventEmitter.emit("player.ended");
});
this.htmlAudioElem.addEventListener("error", () => {
PeaksAudioPlayerAdapter.logger("error event", this.htmlAudioElem.error);
eventEmitter.emit("player.error", this.htmlAudioElem.error);
});
this.htmlAudioElem.addEventListener("pause", () => {
PeaksAudioPlayerAdapter.logger("pause event, currentTime:", this.htmlAudioElem.currentTime);
eventEmitter.emit("player.pause", this.htmlAudioElem.currentTime);
});
this.htmlAudioElem.addEventListener("playing", () => {
PeaksAudioPlayerAdapter.logger("playing event, currentTime:", this.htmlAudioElem.currentTime);
eventEmitter.emit("player.playing", this.htmlAudioElem.currentTime);
});
this.htmlAudioElem.addEventListener("seeked", () => {
PeaksAudioPlayerAdapter.logger("seeked event, currentTime:", this.htmlAudioElem.currentTime);
eventEmitter.emit("player.seeked", this.htmlAudioElem.currentTime);
});
this.htmlAudioElem.addEventListener("timeupdate", () => {
PeaksAudioPlayerAdapter.logger("timeupdate event, currentTime:", this.htmlAudioElem.currentTime);
eventEmitter.emit("player.timeupdate", this.htmlAudioElem.currentTime);
});
await loaded;
}
destroy(): void {
PeaksAudioPlayerAdapter.logger("destroy() called");
this.htmlAudioElem.pause();
this.htmlAudioElem.src = "";
this.htmlAudioElem.load();
}
play(): Promise<void> {
PeaksAudioPlayerAdapter.logger("play() called");
return this.htmlAudioElem.play();
}
pause(): void {
PeaksAudioPlayerAdapter.logger("pause() called");
this.htmlAudioElem.pause();
}
async togglePlayPause(): Promise<void> {
if (this.isPlaying()) {
this.pause();
} else {
this.play();
}
}
isPlaying(): boolean {
const playing = !this.htmlAudioElem.paused;
PeaksAudioPlayerAdapter.logger("isPlaying() called, returning:", playing);
return playing;
}
isSeeking(): boolean {
const seeking = this.htmlAudioElem.seeking;
PeaksAudioPlayerAdapter.logger("isSeeking() called, returning:", seeking);
return seeking;
}
getCurrentTime(): number {
const time = this.htmlAudioElem.currentTime;
PeaksAudioPlayerAdapter.logger("getCurrentTime() called, returning:", time);
return time;
}
getDuration(): number {
PeaksAudioPlayerAdapter.logger("getDuration() called, returning:", this.htmlAudioElem.duration);
return this.htmlAudioElem.duration;
}
seek(time: number): void {
PeaksAudioPlayerAdapter.logger("seek() called with time:", time);
this.htmlAudioElem.currentTime = time;
}
}
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