/*********************************************************************************
*
*
*********************************************************************************/
public void ButtonPlay_Click(object sender, EventArgs e)
{
//String musicFolder = Android.OS.Environment.GetExternalStoragePublicDirectory(Android.OS.Environment.DirectoryMusic).Path;
String filePath = mRecFolder + "/sample_mono_8k8bit.wav";
//String filePath = musicFolder + "/sample_stereo_44k16bit.wav";
System.Diagnostics.Debug.WriteLine(filePath);
File file = new File(filePath);
FileInputStream inputStream = new FileInputStream(file);
// Streamモードで再生を行うので、リングバッファサイズを取得
Int32 bufferSize = AudioTrack.GetMinBufferSize(mSamplingRate, ChannelOut.Mono, mFormat);
System.Diagnostics.Debug.WriteLine("AudioTrack : GetMinBufferSize={0}", bufferSize);
// Frame size
TrackBuffer.Instance.Frames = mFrameSize;
// AudioTrackを生成する
mAudioTrack = new AudioTrack(
Stream.Music,
//Stream.VoiceCall,
mSamplingRate,
ChannelOut.Mono,
mFormat,
bufferSize,
AudioTrackMode.Stream);
// コールバックを指定
mAudioTrack.SetPlaybackPositionUpdateListener(new OnPlaybackPositionUpdateListener());
//通知の発生するフレーム数を指定
mAudioTrack.SetPositionNotificationPeriod(TrackBuffer.Instance.Frames);
TrackBuffer.Instance.Clear();
Task.Run(() => {
while (true)
{
if (TrackBuffer.Instance.Count > 5)
{
break;
}
}
System.Diagnostics.Debug.WriteLine("AudioTrack play streaming data");
mAudioTrack.Play();
Byte[] wav = null;
wav = TrackBuffer.Instance.Dequeue(); mAudioTrack.Write(wav, 0, wav.Length);
wav = TrackBuffer.Instance.Dequeue(); mAudioTrack.Write(wav, 0, wav.Length);
wav = TrackBuffer.Instance.Dequeue(); mAudioTrack.Write(wav, 0, wav.Length);
wav = TrackBuffer.Instance.Dequeue(); mAudioTrack.Write(wav, 0, wav.Length);
});
}