AudioTrack口吃

Question

我有一个应用程序通过蓝牙将音乐流到另一部手机。该应用程序将mp3解码为pcm数据，然后发送。问题是声音有时口吃，但其他时候玩得还好。播放方法如下所示：

public void Read()
{
    System.Threading.Tasks.Task.Run(() =>
    {
        int _bufferSize;
        AudioTrack _output;

        _output = new AudioTrack(Android.Media.Stream.Music, 44100, ChannelOut.Stereo, Android.Media.Encoding.Pcm16bit,
            10000, AudioTrackMode.Stream);
        _output.Play();

        byte[] myReadBuffer = new byte[1000];
        //byte[] check = new byte[1];

        System.Threading.Tasks.Task.Run(() =>
        {
            while (true)
            {
                try
                {
                    mmInStream.Read(myReadBuffer, 0, myReadBuffer.Length);
                    _output.Write(myReadBuffer, 0, myReadBuffer.Length);
                    //mmOutStream.Write(check);
                }
                catch (System.IO.IOException ex)
                {
                    System.Diagnostics.Debug.WriteLine("Input stream was disconnected", ex);
                }
            }
        }).ConfigureAwait(false);
    }).ConfigureAwait(false);
}

过了一段时间，它停止并显示如下：

02-03 19:08:58.019 W/AudioTrack( 3986): releaseBuffer() track 0xc5e2de00 disabled due to previous underrun, restarting

我该怎么解决这个问题？

但后来我发现，从我的三星A5到更好的三星J7，它的播放还不错，但它只是停了下来，这是日志：

 02-04 15:44:12.816 W/AudioTrack( 2299): releaseBuffer() track 0xc6fa9380 disabled due to previous underrun, restarting
 Thread finished: <Thread Pool> #7
 The thread 0x7 has exited with code 0 (0x0).
 02-04 15:44:36.239 V/InputMethodManager( 2299): Starting input: tba=android.view.inputmethod.EditorInfo@37c869a nm : com.companyname.sharethemusic ic=null
 02-04 15:44:36.239 D/InputMethodManager( 2299): startInputInner - Id : 0
 02-04 15:44:36.240 I/InputMethodManager( 2299): startInputInner - mService.startInputOrWindowGainedFocus
 02-04 15:44:36.248 D/InputTransport( 2299): Input channel constructed: fd=78
 02-04 15:44:36.248 D/InputTransport( 2299): Input channel destroyed: fd=72
 02-04 15:44:36.659 D/InputMethodManager( 2299): HSIFW - flag : 0 Pid : 2299
 02-04 15:44:36.712 D/BluetoothSocket( 2299): close() this: android.bluetooth.BluetoothSocket@6b2de90, channel: 7, mSocketIS: android.net.LocalSocketImpl$SocketInputStream@c5befa8, mSocketOS: android.net.LocalSocketImpl$SocketOutputStream@a1a6ac1mSocket: android.net.LocalSocket@c0c7266 impl:android.net.LocalSocketImpl@d0bf9a7 fd:java.io.FileDescriptor@2545e54, mSocketState: CONNECTED
 02-04 15:44:36.723 D/BluetoothAdapter( 2299): disable()
 02-04 15:44:38.062 D/BluetoothAdapter( 2299): onBluetoothStateChange: up=false
 02-04 15:44:38.062 D/BluetoothAdapter( 2299): Bluetooth is turned off, stop adv
 02-04 15:44:38.063 D/BluetoothAdapter( 2299): There are no active google scan apps, stop scan
 02-04 15:44:38.090 D/BluetoothAdapter( 2299): ondisableBLE
 02-04 15:44:38.090 D/BluetoothAdapter( 2299): There are no active google scan apps, stop scan

Answer 1

您可以像下面这样改进代码。

int buffsize = AudioTrack.GetMinBufferSize(8000, ChannelOut.Mono, Encoding.Pcm16bit);
_output = new AudioTrack(Android.Media.Stream.Music, 8000, ChannelOut.Mono, Android.Media.Encoding.Pcm16bit,
            buffsize*4, AudioTrackMode.Stream);