[nAudio]异步录制有一些小问题！ [英] [nAudio] Async Recording has some minor issues !

问题描述

亲爱的读者，



我正在使用[NAudio]录制来自我电脑的输入。当我把字节写入Wave文件时，我也播放它，我希望有一种方法可以播放byte []，而不必先写它，但不幸的是没有办法做到这一点。无论如何，这是我的代码，我希望你有一些建议让我的代码更好，因为现在它的工作原理，但它真的很慢。 >。>

Dear Readers,

I am using [NAudio] to record the input from my computer. I also play it while I''ve written the bytes to a Wave file, I hoped there was a way to play the byte[] without having to write it first but unfortunatly there is no way to do that. Anyways, here is my code, and I would hope that you have some suggestions to make my code better because right now it works, but it''s really slow. >.>

public frmMain()
        {
            InitializeComponent();
        }

        private void frmMain_Load(object sender, EventArgs e)
        {
            // -- Create an input (Device/Stream)
            WaveIn _InputDevice = new WaveIn();

            // -- Change it to the device I want to record it from
            // - Using 1 as the default one.
            _InputDevice.DeviceNumber = 0;

            // -- Change the wave format.
            _InputDevice.WaveFormat = new WaveFormat(44100,2);

            // -- Create the event handlers.
            _InputDevice.DataAvailable += new EventHandler<WaveInEventArgs>(_InputDevice_DataAvailable);
            
            // -- Start recording.
            Thread _Thread = new Thread(_InputDevice.StartRecording);
            _Thread.Start();
        }

        WaveFileWriter _Writer;
        void _InputDevice_DataAvailable(object sender, WaveInEventArgs e)
        {
           // -- Get the correct path.
            string Path = Application.StartupPath + "\\" + DateTime.Now.TimeOfDay.Seconds + ".wav";

            // -- New Writer.
            _Writer = new WaveFileWriter(Path, new WaveFormat(24000, 16, 2));

            // -- Write all the bytes
            _Writer.Write(e.Buffer, 0, e.BytesRecorded);

            // -- Flush.
            _Writer.Flush();

            // -- Close.
            _Writer.Close();

            // -- Play it with a sound player.
            SoundPlayer _Player = new SoundPlayer();
            _Player.SoundLocation = Path;
            _Player.PlaySync();

            // -- Delete it.
            File.Delete(_Player.SoundLocation);
                
        }

推荐答案

好的，我自己找到了解决方案。

有一种躺在互联网上的方法，需要一段时间才能找到：

Alright, found the solution myself.
There was a method lying around the internet, took a while to find:

private void Play(byte[] p)
{
    try
    {
        WaveOut ou = new WaveOut();
        var s = new MemoryStream(p);
        RawSourceWaveStream r = new RawSourceWaveStream(s, new WaveFormat(44100, 2));
        ou.Init(r);
        ou.Play();
        ou.Stop();
        ou.Dispose();
        s.Dispose();
        r.Dispose();
    }
    catch { }

}

使用 BufferedWaveProvider 来执行此操作。在 DataAvailable 事件处理程序中，将收到的数据放入 BufferedWaveProvider 。然后你可以让一个 WaveOut 的实例一直在缓冲的WaveProvider中播放。

Use the BufferedWaveProvider to do this. In the DataAvailable event handler, put the data you received into the BufferedWaveProvider. Then you can have a single instance of WaveOut playing from the buffered WaveProvider all the time.

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