如何使用naudio将音频录制到byte []而不是文件上 [英] How to record audio using naudio onto byte[] rather than file

问题描述

我现在可以使用naudio将音频捕获到文件中，现在我希望将其存储在byte []或c#中的Stream上.

I am able to capture audio using naudio into file, now i want it on byte[] or Stream in c#.

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

到目前为止，我尝试的不是在WaveFileWriter构造函数中传递输出文件名，而是传递MemoryStream对象.对于流对象，我尝试在录音结束后使用Soundplayer播放它.

What i tried so far is instead of passing output filename in WaveFileWriter constructor, passed MemoryStream object. With reference to stream object i try to play it using Soundplayer once recording gets over.

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，我在下面的代码中创建了此代码，以检查其是否可以播放录制的音频.

For testing purpose, i created this below code to check whether it able to play the recorded audio.

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

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

但是当我尝试上述方式时，出现了System.ObjectDisposedException:无法访问封闭的Stream.在 memoryStream.Position = 0; 上.我没有处理流对象，也不知道它在哪里处理.

But when i try with above manner, i got System.ObjectDisposedException: Cannot access a closed Stream. On the line memoryStream.Position = 0; .I didn't dispose the stream object, Don't know where exactly it gets disposed.

推荐答案

正如Mark所建议的，我用IgnoreDisposeStream包裹了memoryStream并且它起作用了.

As Mark suggests, i wrapped the memoryStream with IgnoreDisposeStream and it works.

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

这篇关于如何使用naudio将音频录制到byte []而不是文件上的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！