@ng-web-apis/audio
Version:
This is a library for declarative use of Web Audio API with Angular
114 lines • 14.4 kB
JavaScript
import { __decorate } from "tslib";
import { Attribute, Directive, EventEmitter, inject, Input, Output } from '@angular/core';
import { of, Subject, switchMap } from 'rxjs';
import { audioParam } from '../decorators/audio-param';
import { AudioBufferService } from '../services/audio-buffer.service';
import { AUDIO_CONTEXT } from '../tokens/audio-context';
import { asAudioNode } from '../tokens/audio-node';
import { CONSTRUCTOR_SUPPORT } from '../tokens/constructor-support';
import { parse } from '../utils/parse';
import * as i0 from "@angular/core";
class WebAudioBufferSource extends AudioBufferSourceNode {
buffer$;
detuneParam;
playbackRateParam;
ended;
constructor(autoplay, detuneArg, playbackRateArg) {
const audioBufferService = inject(AudioBufferService);
const context = inject(AUDIO_CONTEXT);
const modern = inject(CONSTRUCTOR_SUPPORT);
const detune = parse(detuneArg, 0);
const playbackRate = parse(playbackRateArg, 1);
if (modern) {
super(context, { detune, playbackRate });
WebAudioBufferSource.init(this, null, autoplay, audioBufferService);
}
else {
const result = context.createBufferSource();
Object.setPrototypeOf(WebAudioBufferSource.prototype, Object.getPrototypeOf(result));
Object.setPrototypeOf(result, WebAudioBufferSource.prototype);
result.playbackRate.value = playbackRate;
WebAudioBufferSource.init(result, null, autoplay, audioBufferService);
return result;
}
}
// eslint-disable-next-line @typescript-eslint/max-params
static init(that, _node, autoplay, audioBufferService) {
if (autoplay !== null) {
that.start();
}
const ended = new EventEmitter();
that.ended = ended;
that.onended = () => ended.emit();
that.buffer$ = new Subject();
that.buffer$
.pipe(
// eslint-disable-next-line @typescript-eslint/promise-function-async
switchMap((source) => typeof source === 'string'
? audioBufferService.fetch(source)
: of(source)))
.subscribe((buffer) => {
that.buffer = buffer;
});
}
set bufferSetter(source) {
this.buffer$.next(source);
}
ngOnDestroy() {
this.buffer$.complete();
try {
this.stop();
}
catch {
// noop
}
this.disconnect();
}
static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: WebAudioBufferSource, deps: [{ token: 'autoplay', attribute: true }, { token: 'detune', attribute: true }, { token: 'playbackRate', attribute: true }], target: i0.ɵɵFactoryTarget.Directive });
static ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.2.12", type: WebAudioBufferSource, isStandalone: true, selector: "[waAudioBufferSourceNode]", inputs: { loop: "loop", loopStart: "loopStart", loopEnd: "loopEnd", channelCount: "channelCount", channelCountMode: "channelCountMode", channelInterpretation: "channelInterpretation", detuneParam: ["detune", "detuneParam"], playbackRateParam: ["playbackRate", "playbackRateParam"], bufferSetter: ["buffer", "bufferSetter"] }, outputs: { ended: "ended" }, providers: [asAudioNode(WebAudioBufferSource)], exportAs: ["AudioNode"], usesInheritance: true, ngImport: i0 });
}
__decorate([
audioParam('detune')
], WebAudioBufferSource.prototype, "detuneParam", void 0);
__decorate([
audioParam('playbackRate')
], WebAudioBufferSource.prototype, "playbackRateParam", void 0);
export { WebAudioBufferSource };
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: WebAudioBufferSource, decorators: [{
type: Directive,
args: [{
standalone: true,
selector: '[waAudioBufferSourceNode]',
inputs: [
'loop',
'loopStart',
'loopEnd',
'channelCount',
'channelCountMode',
'channelInterpretation',
],
providers: [asAudioNode(WebAudioBufferSource)],
exportAs: 'AudioNode',
}]
}], ctorParameters: function () { return [{ type: undefined, decorators: [{
type: Attribute,
args: ['autoplay']
}] }, { type: undefined, decorators: [{
type: Attribute,
args: ['detune']
}] }, { type: undefined, decorators: [{
type: Attribute,
args: ['playbackRate']
}] }]; }, propDecorators: { detuneParam: [{
type: Input,
args: ['detune']
}], playbackRateParam: [{
type: Input,
args: ['playbackRate']
}], ended: [{
type: Output
}], bufferSetter: [{
type: Input,
args: ['buffer']
}] } });
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type {OnDestroy} from '@angular/core';\nimport {Attribute, Directive, EventEmitter, inject, Input, Output} from '@angular/core';\nimport {of, Subject, switchMap} from 'rxjs';\n\nimport {audioParam} from '../decorators/audio-param';\nimport {AudioBufferService} from '../services/audio-buffer.service';\nimport {AUDIO_CONTEXT} from '../tokens/audio-context';\nimport {asAudioNode} from '../tokens/audio-node';\nimport {CONSTRUCTOR_SUPPORT} from '../tokens/constructor-support';\nimport type {AudioParamInput} from '../types/audio-param-input';\nimport {parse} from '../utils/parse';\n\n@Directive({\n    standalone: true,\n    selector: '[waAudioBufferSourceNode]',\n    inputs: [\n        'loop',\n        'loopStart',\n        'loopEnd',\n        'channelCount',\n        'channelCountMode',\n        'channelInterpretation',\n    ],\n    providers: [asAudioNode(WebAudioBufferSource)],\n    exportAs: 'AudioNode',\n})\nexport class WebAudioBufferSource extends AudioBufferSourceNode implements OnDestroy {\n    protected buffer$!: Subject<AudioBuffer | string | null>;\n\n    @Input('detune')\n    @audioParam('detune')\n    public detuneParam?: AudioParamInput;\n\n    @Input('playbackRate')\n    @audioParam('playbackRate')\n    public playbackRateParam?: AudioParamInput;\n\n    @Output()\n    public ended?: EventEmitter<void>;\n\n    constructor(\n        @Attribute('autoplay') autoplay: string | null,\n        @Attribute('detune') detuneArg: string | null,\n        @Attribute('playbackRate') playbackRateArg: string | null,\n    ) {\n        const audioBufferService = inject(AudioBufferService);\n        const context = inject(AUDIO_CONTEXT);\n        const modern = inject(CONSTRUCTOR_SUPPORT);\n        const detune = parse(detuneArg, 0);\n        const playbackRate = parse(playbackRateArg, 1);\n\n        if (modern) {\n            super(context, {detune, playbackRate});\n            WebAudioBufferSource.init(this, null, autoplay, audioBufferService);\n        } else {\n            const result = context.createBufferSource() as WebAudioBufferSource;\n\n            Object.setPrototypeOf(\n                WebAudioBufferSource.prototype,\n                Object.getPrototypeOf(result),\n            );\n            Object.setPrototypeOf(result, WebAudioBufferSource.prototype);\n\n            result.playbackRate.value = playbackRate;\n            WebAudioBufferSource.init(result, null, autoplay, audioBufferService);\n\n            return result;\n        }\n    }\n\n    // eslint-disable-next-line @typescript-eslint/max-params\n    protected static init(\n        that: WebAudioBufferSource,\n        _node: AudioNode | null,\n        autoplay: string | null,\n        audioBufferService: AudioBufferService,\n    ): void {\n        if (autoplay !== null) {\n            that.start();\n        }\n\n        const ended = new EventEmitter<void>();\n\n        that.ended = ended;\n        that.onended = () => ended.emit();\n        that.buffer$ = new Subject<AudioBuffer | string | null>();\n        that.buffer$\n            .pipe(\n                // eslint-disable-next-line @typescript-eslint/promise-function-async\n                switchMap((source) =>\n                    typeof source === 'string'\n                        ? audioBufferService.fetch(source)\n                        : of(source),\n                ),\n            )\n            .subscribe((buffer) => {\n                that.buffer = buffer;\n            });\n    }\n\n    @Input('buffer')\n    public set bufferSetter(source: AudioBuffer | string | null) {\n        this.buffer$.next(source);\n    }\n\n    public ngOnDestroy(): void {\n        this.buffer$.complete();\n\n        try {\n            this.stop();\n        } catch {\n            // noop\n        }\n\n        this.disconnect();\n    }\n}\n"]}