如何使用naudio将音频录制到byte []而不是file

Question

我能够使用naudio将音频捕获到文件中,现在我希望它在byte []或stream in c#中.

this.writer = new WaveFileWriter(this.outputFilename, this.waveIn.WaveFormat);

到目前为止我尝试的是在WaveFileWriter构造函数中传递输出文件名,而不是传递MemoryStream对象.参考流对象,一旦录制结束,我尝试使用Soundplayer播放它.

private IWaveIn waveIn;
private WaveFileWriter writer;
private string outputFilename;

private Stream memoryStream;

public void onRecord(object inputDevice, string fileName)
{
    if (this.waveIn == null)
    {
            this.outputFilename = fileName;
            this.waveIn = new WasapiLoopbackCapture((MMDevice)inputDevice);

            if(memoryStream == null)
                   memoryStream = new MemoryStream();

            this.writer = new WaveFileWriter(this.memoryStream,this.waveIn.WaveFormat);
            this.waveIn.DataAvailable += new EventHandler<WaveInEventArgs>(this.OnDataAvailable);
            this.waveIn.RecordingStopped += new EventHandler<StoppedEventArgs>(this.OnRecordingStopped);
            this.waveIn.StartRecording();
    }
}

private void OnDataAvailable(object sender, WaveInEventArgs e)
{
    this.writer.Write(e.Buffer, 0, e.BytesRecorded);
}

public void OnRecordingStopped(object sender, StoppedEventArgs e)
{
    if (this.waveIn != null)
    {
            this.waveIn.Dispose();
        this.waveIn = null;
    }

    if (this.writer != null)
    {
        this.writer.Close();
        this.writer = null;
    } 
}

出于测试目的,我创建了以下代码以检查它是否能够播放录制的音频.

System.Media.SoundPlayer soundPlayer = new System.Media.SoundPlayer();

memoryStream.Position = 0; 
soundPlayer.Stream = null;
soundPlayer.Stream = memoryStream;
soundPlayer.Play();

但是当我尝试以上方式时,我得到System.ObjectDisposedException:无法访问封闭的Stream.在行memoryStream.Position = 0; 我没有丢弃流对象,不知道它究竟在哪里处理.

Answer 1

正如马克暗示,我的包裹memoryStream与IgnoreDisposeStream和它的作品.

this.writer = new WaveFileWriter(new IgnoreDisposeStream(memoryStream),this.waveIn.WaveFormat);