[oscar89]

I wrote the following code in Java to send video and audio using RTP protocol
but i need to send the data using UDP protocol , please tell me how I can convert the RTPStream to under layer and then retrieve the stream to upper layer at the receiver side ?!?


The code is :

       public SessionManager Videomanger, Audiomanger;
// we need to creat two RTP sesion one for audio and one for video
int RTPport = 1990;
int RTCPport = 1989;

        RTPStream stream;
        Processor processor;
        int i=0;
       public long  SSRC = 15;
  SourceDescription [] srcdesc;
  double rtcp_bw_fraction = 0.2;
  double rtcp_sender_bw_fraction = 0.2;
  public static final int DES = 1;
  byte[] key;
  EncryptionInfo encrpt = new EncryptionInfo(DES,key);

        //SendStream represents a stream of data coming from the Processor or
        // input DataSource that is being sent over the network.
        //To create a new SendStream, you
//call the SessionManager createSendStream method.
        InetAddress add  ;
        SendStream snd;
        int TTL = 100;
        SessionAddress sessionAdd = new SessionAddress(add, 1989,TTL);
        //For ReceiveStreams,
       // this DataSource is always a PushBufferDataSource.

        ReceiveStream rcv; //represents a stream thatÕs being received from a remote participant.
        DataSource datasrc = null;
        Participant parti; // interface to track and mange all paticipants
        Buffer getFlags;
        byte [] payload;
        String RTPstr;
       // RTPSocket rtps;
        int payloadType, sequenceNumber;
        long timestamp;
       RTPHeader header;

       // header parameter
      // boolean extenstion = false;
       public int marker = 0; // extention type
       
 // buffere data source associated with RTP streams
     PushBufferDataSource databuffer;
 // our main rtpsocket abstraction to which we will create and send
            // to the Manager for appropriate handler creation
            RTPSocket rtpsocket = null;
            // the control RTPIODataSource of the RTPSocket above
            RTPPushDataSource rtcpsource = null;
            
           
      public void sendRTP() throws IOException{
          // all variables should be defined global
             // Create a SessionManager and hand over the
// datasource for SendStream creation.

           Videomanger = new com.sun.media.rtp.RTPSessionMgr();
            try {
                // initialize session manger
                Videomanger.initSession(sessionAdd, SSRC, srcdesc, rtcp_bw_fraction, rtcp_sender_bw_fraction);
            } catch (InvalidSessionAddressException ex) {
                Logger.getLogger(Client2View.class.getName()).log(Level.SEVERE, null, ex);
            }

            try {
                Videomanger.startSession(sessionAdd, TTL, encrpt);
            } catch (InvalidSessionAddressException ex) {
                Logger.getLogger(Client2View.class.getName()).log(Level.SEVERE, null, ex);
            }
     
           rtcpsource = rtpsocket.getControlChannel();


          //after Construct a Processor using the appropriate capture DataSource.
         /// this to retrive data from the processor
             datasrc  = (DataSource) processor.getDataOutput();

            // creat RTP packet to send data

               stream = (RTPStream) datasrc;

             // we need to convert rtp streams to string then to byte for underlayer

               RTPstr = stream.toString();

               payload = RTPstr.getBytes();


                header = new RTPHeader(marker);
                
                InetAddress host = InetAddress.getByName(ipaddress);
               
               DatagramPacket packet = new DatagramPacket(payload, payload.length,host,portnumber) ;
               DatagramSocket socket = new DatagramSocket();
               
               socket.send(packet);


            

                // after this .. socket creation ,,,

      } /// end sendRTP

This post has been edited by macosxnerd101: 25 March 2011 - 03:48 PM
Reason for edit:: Please use code tags