@ng-web-apis/audio
Version:
This is a library for declarative use of Web Audio API with Angular
37 lines • 4.89 kB
JavaScript
import { inject, Injectable } from '@angular/core';
import { AUDIO_CONTEXT } from '../tokens/audio-context';
import * as i0 from "@angular/core";
class AudioBufferService {
context = inject(AUDIO_CONTEXT);
cache = new Map();
async fetch(url) {
return new Promise((resolve, reject) => {
if (this.cache.has(url)) {
resolve(this.cache.get(url));
return;
}
const request = new XMLHttpRequest();
request.open('GET', url, true);
request.responseType = 'arraybuffer';
request.onerror = reject;
request.onabort = reject;
request.onload = () => {
void this.context.decodeAudioData(request.response, (buffer) => {
this.cache.set(url, buffer);
resolve(buffer);
}, reject);
};
request.send();
});
}
static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: AudioBufferService, deps: [], target: i0.ɵɵFactoryTarget.Injectable });
static ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: AudioBufferService, providedIn: 'root' });
}
export { AudioBufferService };
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: AudioBufferService, decorators: [{
type: Injectable,
args: [{
providedIn: 'root',
}]
}] });
//# sourceMappingURL=data:application/json;base64,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