Class TestOutput

packages/alphatab/test/audio/TestOutput.ts:13–85

 * @internal
 */
export class TestOutput implements ISynthOutput {
    public samples: Float32Array[] = [];
    public sampleCount: number = 0;
    private _storeSamples: boolean;

    public get sampleRate(): number {
        return 44100;
    }

    public constructor(storeSamples: boolean = true) {
        this._storeSamples = storeSamples;
    }

    public open(_bufferTimeInMilliseconds: number): void {
        this.samples = [];
        (this.ready as EventEmitter).trigger();
    }

    public play(): void {
        // nothing to do
    }

    public destroy(): void {
        // nothing to do
    }

    public next(): void {
        (this.sampleRequest as EventEmitter).trigger();
    }

    public pause(): void {
        // nothing to do
    }

    public addSamples(f: Float32Array): void {
        if (this._storeSamples) {
            this.samples.push(f);
        }
        this.sampleCount += f.length;
        (this.samplesPlayed as EventEmitterOfT<number>).trigger(f.length / SynthConstants.AudioChannels);
    }

    public resetSamples(): void {
        // nothing to do
    }

    public activate(): void {
        // nothing to do
    }

    /**
     * Fired when the output has been successfully opened and is ready to play samples.
     */
    readonly ready: IEventEmitter = new EventEmitter();

    /**
     * Fired when a certain number of samples have been played.
     */