通过WiFi在Android手机之间流式传输语音

Question

通过WiFi在Android手机之间流式传输语音

我正试图通过WiFi将音频从1个Android流式传输到另一个Android.在查看了一些示例后,我制作了2个应用程序,每个应用程序中只有一个活动,1个用于捕获和发送音频,另一个用于接收.

我使用了Audiorecord和Audiotrack课程来捕捉和播放.然而,我只是听到一些噼里啪啦的声音(虽然我回复后我做了一些改变后现在停止了)

发送语音的活动.

public class VoiceSenderActivity extends Activity {

private EditText target;
private TextView streamingLabel;
private Button startButton,stopButton;

public byte[] buffer;
public static DatagramSocket socket;
private int port=50005;         //which port??
AudioRecord recorder;

//Audio Configuration. 
private int sampleRate = 8000;      //How much will be ideal?
private int channelConfig = AudioFormat.CHANNEL_CONFIGURATION_MONO;    
private int audioFormat = AudioFormat.ENCODING_PCM_16BIT;       

private boolean status = true;




@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    target = (EditText) findViewById (R.id.target_IP);
    streamingLabel = (TextView) findViewById(R.id.streaming_label);
    startButton = (Button) findViewById (R.id.start_button);
    stopButton = (Button) findViewById (R.id.stop_button);

    streamingLabel.setText("Press Start! to begin");

    startButton.setOnClickListener (startListener);
    stopButton.setOnClickListener (stopListener);
}

private final OnClickListener stopListener = new OnClickListener() {

    @Override
    public void onClick(View arg0) {
                status = false;
                recorder.release();
                Log.d("VS","Recorder released");
    }

};

private final OnClickListener startListener = new OnClickListener() {

    @Override
    public void onClick(View arg0) {
                status = true;
                startStreaming();           
    }

};

public void startStreaming() {


    Thread streamThread = new Thread(new Runnable() {

        @Override
        public void run() {
            try {


                int minBufSize = AudioRecord.getMinBufferSize(sampleRate, channelConfig, audioFormat);
                DatagramSocket socket = new DatagramSocket();
                Log.d("VS", "Socket Created");

                byte[] buffer = new byte[minBufSize];

                Log.d("VS","Buffer created of size " + minBufSize);
                DatagramPacket packet;

                final InetAddress destination = InetAddress.getByName(target.getText().toString());
                Log.d("VS", "Address retrieved");


                recorder = new AudioRecord(MediaRecorder.AudioSource.MIC,sampleRate,channelConfig,audioFormat,minBufSize);
                Log.d("VS", "Recorder initialized");

                recorder.startRecording();


                while(status == true) {


                    //reading data from MIC into buffer
                    minBufSize = recorder.read(buffer, 0, buffer.length);

                    //putting buffer in the packet
                    packet = new DatagramPacket (buffer,buffer.length,destination,port);

                    socket.send(packet);


                }



            } catch(UnknownHostException e) {
                Log.e("VS", "UnknownHostException");
            } catch (IOException e) {
                Log.e("VS", "IOException");
            } 


        }

    });
    streamThread.start();
 }
 }

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接收语音的活动

public class VoiceReceiverActivity extends Activity {


private Button receiveButton,stopButton;

public static DatagramSocket socket;
private AudioTrack speaker;

//Audio Configuration. 
private int sampleRate = 8000;      //How much will be ideal?
private int channelConfig = AudioFormat.CHANNEL_CONFIGURATION_MONO;    
private int audioFormat = AudioFormat.ENCODING_PCM_16BIT;       

private boolean status = true;


@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    receiveButton = (Button) findViewById (R.id.receive_button);
    stopButton = (Button) findViewById (R.id.stop_button);
    findViewById(R.id.receive_label);

    receiveButton.setOnClickListener(receiveListener);
    stopButton.setOnClickListener(stopListener);

}


private final OnClickListener stopListener = new OnClickListener() {

    @Override
    public void onClick(View v) {
        status = false;
        speaker.release();
        Log.d("VR","Speaker released");

    }

};


private final OnClickListener receiveListener = new OnClickListener() {

    @Override
    public void onClick(View arg0) {
        status = true;
        startReceiving();

    }

};

public void startReceiving() {

    Thread receiveThread = new Thread (new Runnable() {

        @Override
        public void run() {

            try {

                DatagramSocket socket = new DatagramSocket(50005);
                Log.d("VR", "Socket Created");


                byte[] buffer = new byte[256];


                //minimum buffer size. need to be careful. might cause problems. try setting manually if any problems faced
                int minBufSize = AudioRecord.getMinBufferSize(sampleRate, channelConfig, audioFormat);

                speaker = new AudioTrack(AudioManager.STREAM_MUSIC,sampleRate,channelConfig,audioFormat,minBufSize,AudioTrack.MODE_STREAM);

                speaker.play();

                while(status == true) {
                    try {


                        DatagramPacket packet = new DatagramPacket(buffer,buffer.length);
                        socket.receive(packet);
                        Log.d("VR", "Packet Received");

                        //reading content from packet
                        buffer=packet.getData();
                        Log.d("VR", "Packet data read into buffer");

                        //sending data to the Audiotrack obj i.e. speaker
                        speaker.write(buffer, 0, minBufSize);
                        Log.d("VR", "Writing buffer content to speaker");

                    } catch(IOException e) {
                        Log.e("VR","IOException");
                    }
                }


            } catch (SocketException e) {
                Log.e("VR", "SocketException");
            }


        }

    });
    receiveThread.start();
}

}

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我使用wireshark检查数据包是否正在发送,我可以看到数据包.然而,源是发送设备和目的地的MAC地址,也就像物理地址.不确定这是否相关.

那有什么问题呢？