我有一个来自我用Java创建的休息端点的bufferarray,它返回一个byte []数组;所以我设法用HTTP获取数组(我正在使用Angular)现在我想在浏览器中播放音频。我做了一些研究,我找到了网络音频API,但错误是我无法解码数组。
context = new AudioContext();
audioArray : ArrayBuffer;
buf ;
let arrayBuffer = new ArrayBuffer(this.audioArray.byteLength);
let bufferView = new Uint8Array(arrayBuffer);
for (let i = 0; i < this.audioArray.byteLength; i++) {
bufferView[i] = this.audioArray[i];
}
console.log(arrayBuffer);
// this function should decode the array but the error occurs
// DOMException: Unable to decode audio data
this.context.decodeAudioData(this.audioArray).then((buffer)=>{
this.buf = buffer;
this.play();
}).catch((error)=>{
console.log(error);
});
console.log(this.audioArray);
play() {
let source = this.context.createBufferSource();
source.buffer = this.buf;
source.connect(this.context.destination);
source.start(0);
}
我通过调用其余的API获取ngOnInit函数中的数组:)
this.radioService.generateVoiceMethode().subscribe(res => {
console.log(res);
this.audioArray = new ArrayBuffer(res.byteLength);
this.audioArray = res;
console.log(this.audioArray);
});
答案 0 :(得分:0)
尽管这是一个古老的问题,但我正在分享一个对我有用的答案。将来可能对某些人有用。
async play(data: ArrayBuffer) {
const context = new AudioContext();
const buffer = await context.decodeAudioData(data);
const source = context.createBufferSource();
source.buffer = buffer;
source.connect(context.destination);
source.start();
}
以上代码可在Angular 8中使用。