在 cscore 中编辑单个样本

Question

我正在尝试使用 CScore 获取单个 32 位示例。我目前拥有的是

    public MainWindow()
    {
        InitializeComponent();
        var wasapiCapture = new WasapiCapture();
        wasapiCapture.Initialize();
        wasapiCapture.Start();
        var wasapiCaptureSource = new SoundInSource(wasapiCapture);
        var stereoSource = wasapiCaptureSource.ToStereo();
        var ieeeFloatToSample = new IeeeFloatToSample(stereoSource);
        var sampleProvider = new SampleProvider(ieeeFloatToSample);
        var wavesource = sampleProvider.ToWaveSource();
        var wasapiOut = new WasapiOut();
        wasapiOut.Initialize(wavesource);
        wasapiOut.Play();
    }

还有一个class

class SampleProvider : ISampleSource
{
    private ISampleSource _source;
    public SampleProvider(ISampleSource source)
    {
        this._source = source;
    }

    public int Read(float[] buffer, int offset, int count)
    {
        var sampleRead = _source.Read(buffer, 0, count);
        return sampleRead;
    }

    public void Dispose()
    {
        throw new NotImplementedException();
    }
    public WaveFormat WaveFormat { get; private set; }
    public long Position { get; set; }
    public long Length { get; private set; }
}

我原以为音频会原封不动地通过，但我在 sampleProvider.ToWaveSource(); 上收到错误消息；说 "Object reference not set to an instance of an object"

有什么想法吗？谢谢

Answer 1

如果您浏览 CSCore 源代码，您会发现 ToWaveSource 最终克隆了您未定义的 SampleProvider 的 WaveFormat。您可能只 return 来自上游源的 WaveFormat：

public WaveFormat WaveFormat { get { return _source.WaveFormat; } }

在 cscore 中编辑单个样本

Edit individual samples in cscore

audio

cscore