Multiple RTP streams + local video Player - S.O.S.

Question

Hi guys,
I ran out of ideas, so I need your help now. It's gonna be a long one...
Given:
MediaLocator(vfw://0) --> DataSource(video) --> Processor(video)
Then I send processor's output (videoProcessor.getDataOutput()) over RTP to multiple destinations. Of course, I am using cloneable DataSources for this, cause there's no other way. So, now I also need to have a local video feed just for self-reference, but it seems to be a tough one! Let me go over what I've tried til now:
1. Using DataSource clone from video processor, I tried to create a Player (i.e. Manager.createPlayer(clonedDS) ). BOOM!
javax.media.NoPlayerException: Cannot find a Player for: com.ibm.media.protocol.SuperCloneableDataSource$PushBufferDataSourceSlave@126c6ea
     at javax.media.Manager.createPlayerForSource(Manager.java:1512)
     at javax.media.Manager.createPlayer(Manager.java:500)
     at org.interlab.mc.media.MediaManager.setVideoProcessorEnabled(MediaManager.java:2046)
     at org.interlab.mc.media.MediaManager.openVideoStreams(MediaManager.java:1807)
     at org.interlab.mc.UserAgent.callStateChanged(UserAgent.java:2516)
     at org.interlab.mc.call.Call.fireCallStateChangedEvent(Call.java:366)
     at org.interlab.mc.call.Call.setState(Call.java:244)
     at org.interlab.mc.call.CallManager.processInviteOK(CallManager.java:330)
     at org.interlab.mc.UserAgent.processResponse(UserAgent.java:1632)
     at gov.nist.javax.sip.EventScanner.deliverEvent(EventScanner.java:288)
     at gov.nist.javax.sip.EventScanner.run(EventScanner.java:489)
     at java.lang.Thread.run(Unknown Source)So i checked. If I create a clone from my DataSource(video) then Manager would return this instance:
class com.sun.media.multiplexer.RawBufferMux$RawBufferDataSourceBut if, like now, I want to create a clone from DataSource from video processor (i.e. Processor.getDataOutput()) then I get this instance:
com.ibm.media.protocol.SuperCloneableDataSource$PushBufferDataSourceSlaveHope you noticed the difference. :) Now, from the latter one neither I can create a Player nor can I create a Processor. Too bad. So, I tried another one.
2. I took my DataSource(video), created a cloneable (just like in Clone.java) and from there I finally got my precious Player! Yes!! But not so fast.... Player was working, but the rest now wasn't. Once I have my DataSource(video) cloned, my Processor(video)'s data output got starved - i could not send video anymore. What a life?! Fine... Let's try another one.
3. Just like I send video remote I decided to send the video locally in a loop, for instance, from 203.159.2.3:25000 to 203.159.2.3:25002. And what do you think? Still doesnt work!! This "loop" stream is not detected (i.e. controller's update doest sense anything). But if i open JMStudio, and start listening (i.e. open RTP session) on 203.159.2.3:25002, i get my stream showing nice and clear!
Someone, anyone, please, help! Point my nose to some document, piece of code - anything to make this work.
Kind regards.

Answer 1

I'd better post here, so everyone else can get it too. so here it goes:
That's RTPSocketAdapter
import java.io.IOException;
import java.net.InetAddress;
import java.net.DatagramSocket;
import java.net.MulticastSocket;
import java.net.DatagramPacket;
import java.net.SocketException;
import javax.media.protocol.PushSourceStream;
import javax.media.protocol.ContentDescriptor;
import javax.media.protocol.SourceTransferHandler;
import javax.media.rtp.RTPConnector;
import javax.media.rtp.OutputDataStream;
* An implementation of RTPConnector based on UDP sockets.
public class RTPSocketAdapter implements RTPConnector {
    DatagramSocket dataSock=null;
    DatagramSocket ctrlSock=null;
    InetAddress remoteAddress=null;
    int remotePort=0;
    InetAddress localAddress=null;
    int localPort=0;
    SockInputStream dataInStrm = null, ctrlInStrm = null;
    SockOutputStream dataOutStrm = null, ctrlOutStrm = null;
    public RTPSocketAdapter(InetAddress localAddress, int localPort,
                                  InetAddress remoteAddress, int remotePort) throws IOException {
         this(localAddress, localPort, remoteAddress, remotePort, 1);
    public RTPSocketAdapter(InetAddress localAddress, int localPort,
                                   InetAddress remoteAddress, int remotePort, int ttl) throws IOException {
          try {
              if (remoteAddress.isMulticastAddress()) {
                    dataSock = new MulticastSocket(localPort);
                    ctrlSock = new MulticastSocket(localPort+1);
                    ((MulticastSocket)dataSock).joinGroup(remoteAddress);
                    ((MulticastSocket)dataSock).setTimeToLive(ttl);
                    ((MulticastSocket)ctrlSock).joinGroup(remoteAddress);
                    ((MulticastSocket)ctrlSock).setTimeToLive(ttl);
              else {
                    dataSock = new DatagramSocket(localPort, localAddress);
                    ctrlSock = new DatagramSocket(localPort+1, localAddress);
          catch (SocketException e) {
              throw new IOException(e.getMessage());
          this.localAddress = localAddress;
          this.localPort = localPort;
          this.remoteAddress = remoteAddress;
          this.remotePort = remotePort;
     * Returns an input stream to receive the RTP data.
    public PushSourceStream getDataInputStream() throws IOException {
          if (dataInStrm == null) {
              dataInStrm = new SockInputStream(dataSock, remoteAddress, remotePort);
              dataInStrm.start();
          return dataInStrm;
     * Returns an output stream to send the RTP data.
    public OutputDataStream getDataOutputStream() throws IOException {
          if (dataOutStrm == null)
              dataOutStrm = new SockOutputStream(dataSock, remoteAddress, remotePort);
          return dataOutStrm;
     * Returns an input stream to receive the RTCP data.
    public PushSourceStream getControlInputStream() throws IOException {
          if (ctrlInStrm == null) {
              ctrlInStrm = new SockInputStream(ctrlSock, remoteAddress, remotePort+1);
              ctrlInStrm.start();
          return ctrlInStrm;
     * Returns an output stream to send the RTCP data.
    public OutputDataStream getControlOutputStream() throws IOException {
          if (ctrlOutStrm == null)
              ctrlOutStrm = new SockOutputStream(ctrlSock, remoteAddress, remotePort+1);
          return ctrlOutStrm;
     * Close all the RTP, RTCP streams.
    public void close() {
          if (dataInStrm != null)
              dataInStrm.kill();
          if (ctrlInStrm != null)
              ctrlInStrm.kill();
          dataSock.close();
          ctrlSock.close();
     * Set the receive buffer size of the RTP data channel.
     * This is only a hint to the implementation.  The actual implementation
     * may not be able to do anything to this.
    public void setReceiveBufferSize(int size) throws IOException {
         dataSock.setReceiveBufferSize(size);
     * Get the receive buffer size set on the RTP data channel.
     * Return -1 if the receive buffer size is not applicable for
     * the implementation.
    public int getReceiveBufferSize() {
          try {
              return dataSock.getReceiveBufferSize();
          catch (Exception e) {
              return -1;
     * Set the send buffer size of the RTP data channel.
     * This is only a hint to the implementation.  The actual implementation
     * may not be able to do anything to this.
    public void setSendBufferSize( int size) throws IOException {
         dataSock.setSendBufferSize(size);
     * Get the send buffer size set on the RTP data channel.
     * Return -1 if the send buffer size is not applicable for
     * the implementation.
    public int getSendBufferSize() {
          try {
              return dataSock.getSendBufferSize();
          catch (Exception e) {
              return -1;
     * Return the RTCP bandwidth fraction.  This value is used to
     * initialize the RTPManager.  Check RTPManager for more detauls.
     * Return -1 to use the default values.
    public double getRTCPBandwidthFraction() {
         return -1;
     * Return the RTCP sender bandwidth fraction.  This value is used to
     * initialize the RTPManager.  Check RTPManager for more detauls.
     * Return -1 to use the default values.
    public double getRTCPSenderBandwidthFraction() {
         return -1;
     * An inner class to implement an OutputDataStream based on UDP sockets.
    class SockOutputStream implements OutputDataStream {
          DatagramSocket sock;
          InetAddress addr;
          int port;
          public SockOutputStream(DatagramSocket sock, InetAddress addr, int port) {
              this.sock = sock;
              this.addr = addr;
              this.port = port;
          public int write(byte data[], int offset, int len) {
              try {
                   sock.send(new DatagramPacket(data, offset, len, addr, port));
              catch (Exception e) {
                   return -1;
              return len;
     * An inner class to implement an PushSourceStream based on UDP sockets.
    class SockInputStream extends Thread implements PushSourceStream {
          DatagramSocket sock;
          InetAddress addr;
          int port;
          boolean done = false;
          boolean dataRead = false;
          SourceTransferHandler sth = null;
          public SockInputStream(DatagramSocket sock, InetAddress addr, int port) {
              this.sock = sock;
              this.addr = addr;
              this.port = port;
          public int read(byte buffer[], int offset, int length) {
              DatagramPacket p = new DatagramPacket(buffer, offset, length, addr, port);
              try {
                   sock.receive(p);
              catch (IOException e) {
                   return -1;
              synchronized (this) {
                   dataRead = true;
                   notify();
              return p.getLength();
          public synchronized void start() {
              super.start();
              if (sth != null) {
                   dataRead = true;
                   notify();
          public synchronized void kill() {
              done = true;
              notify();
          public int getMinimumTransferSize() {
              return 2 * 1024;     // twice the MTU size, just to be safe.
          public synchronized void setTransferHandler(SourceTransferHandler sth) {
              this.sth = sth;
              dataRead = true;
              notify();
          // Not applicable.
          public ContentDescriptor getContentDescriptor() {
              return null;
          // Not applicable.
          public long getContentLength() {
              return LENGTH_UNKNOWN;
          // Not applicable.
          public boolean endOfStream() {
              return false;
          // Not applicable.
          public Object[] getControls() {
              return new Object[0];
          // Not applicable.
          public Object getControl(String type) {
              return null;
      * Loop and notify the transfer handler of new data.
          public void run() {
              while (!done) {
                    synchronized (this) {
                        while (!dataRead && !done) {
                              try {
                                  wait();
                              catch (InterruptedException e) { }
                        dataRead = false;
                    if (sth != null && !done) {
                        sth.transferData(this);
}See, how to create RTPManager in next post