how to continuously send data without blocking?

I am trying to send rtp audio data from my Android application.

I currently can send 1 RTP packet with the code below and I also have another class that extends Thread that listens to and receives RTP packets.

My question is how do I continuously send my updated buffer through the packet payload without blocking the receiving thread?

public void run() {  

      isRecording = true;
      android.os.Process.setThreadPriority
      (android.os.Process.THREAD_PRIORITY_URGENT_AUDIO);

      int buffersize = AudioRecord.getMinBufferSize(8000,
              AudioFormat.CHANNEL_CONFIGURATION_MONO, 
              AudioFormat.ENCODING_PCM_16BIT);

              Log.d("BUFFERSIZE","Buffer size = " + buffersize);

              arec = new AudioRecord(MediaRecorder.AudioSource.MIC,
                          8000,
                          AudioFormat.CHANNEL_CONFIGURATION_MONO,
                          AudioFormat.ENCODING_PCM_16BIT,
                          buffersize);

    short[] readBuffer = new short[80];
    byte[] buffer = new byte[160];

    arec.startRecording();
    while(arec.getRecordingState() == AudioRecord.RECORDSTATE_RECORDING){
     int frames = arec.read(readBuffer, 0, 80);
     @SuppressWarnings("unused")
     int lenghtInBytes = codec.encode(readBuffer, 0, buffer, frames);

      RtpPacket rtpPacket = new RtpPacket();
    rtpPacket.setV(2);
    rtpPacket.setX(0);
      rtpPacket.setM(0);
      rtpPacket.setPT(0);
      rtpPacket.setSSRC(123342345);
      rtpPacket.setPayload(buffer, 160);
            try {

                rtpSession2.sendRtpPacket(rtpPacket);
            } catch (UnknownHostException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (RtpException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
      }
    }

So when I send on one device and receive on another I get decent audio, but when I send and receive on both I get broken sound like its taking turns to send and receive audio.

I have a feeling it could be to do with the while loop? it could be looping around in there and not letting anything else run?

ansaurus

tags:

views:

answers:

how to continuously send data without blocking?

related questions