用AudioTrack进行音频录制传输

AudioTrack用的也是socket进程间传输机制，用read方法获得底层音频数据。本程序中封装代码：

public class CustomAudioRecorder {

private AudioRecordResult audioResult = null;

private boolean bRecordThreadRuning = false;

private int m_in_buf_size = 0;

private byte[] m_in_bytes = null;

private AudioRecord m_in_rec = null;

private Thread recordThread = null;

public CustomAudioRecorder(AudioRecordResultparamAudioRecordResult) {

this.audioResult = paramAudioRecordResult;

initRecorder();

}

public void StartRecord()

 {

try {

if (this.bRecordThreadRuning)

      return;

    this.bRecordThreadRuning = true;

    this.recordThread = new Thread(newRecordThread());

    this.recordThread.start();

} 

catch (Exception e) {

// TODO: handle exception

releaseRecord();

}

finally{

}

 }

public void StopRecord() {

synchronized (this) {

if (m_in_rec == null) {

return;

}

bRecordThreadRuning = false;

try {

recordThread.join();

} catch (Exception e) {

// TODO: handle exception

}

recordThread = null;

}

}

public boolean initRecorder() {

Log.i("info", "initRecorder()");

this.m_in_buf_size = AudioRecord.getMinBufferSize(8000, 2,2);

this.m_in_rec = new AudioRecord(1, 8000, 2, 2,this.m_in_buf_size);

if (this.m_in_rec == null) {

return false;

}

this.m_in_bytes = new byte[this.m_in_buf_size];

return true;

}

public void releaseRecord() {

Log.d("tag", "releaseRecord");

this.m_in_rec.release();

this.m_in_rec = null;

}

public static abstract interface AudioRecordResult {

public abstract void AudioRecordData(byte[]paramArrayOfByte,

int paramInt);

}

class RecordThread implements Runnable {

RecordThread() {

}

public void run() {

m_in_rec.startRecording();

while (bRecordThreadRuning) {

int i = m_in_rec.read(m_in_bytes, 0, m_in_buf_size);

if (i == 0) {

return;

}

if (audioResult == null)

continue;

                         / /回调函数，返回数据

audioResult.AudioRecordData(m_in_bytes, i);

}

if (!bRecordThreadRuning) {

m_in_rec.stop();

return;

}

}

}

}