content: /*
   * Copyright (C) 2009 The Sipdroid Open Source Project
   * Copyright (C) 2005 Luca Veltri - University of Parma - Italy
   * 
   * This file is part of Sipdroid (http://www.sipdroid.org)
   * 
   * Sipdroid is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 3 of the License, or
   * (at your option) any later version.
   * 
   * This source code is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   * 
   * You should have received a copy of the GNU General Public License
   * along with this source code; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  package org.sipdroid.net;
  
  import java.io.IOException;
  import java.net.DatagramPacket;
  import java.net.InetAddress;
  
  
  /**
   * RtpSocket implements a RTP socket for receiving and sending RTP packets.
   * <p>
   * RtpSocket is associated to a DatagramSocket that is used to send and/or
   * receive RtpPackets.
   */
  public class RtpSocket {
  	/** UDP socket */
  	SipdroidSocket socket;
  	DatagramPacket datagram;
  	
  	/** Remote address */
  	InetAddress r_addr;
  
  	/** Remote port */
  	int r_port;
  
  	/** Creates a new RTP socket (only receiver) */
  	public RtpSocket(SipdroidSocket datagram_socket) {
  		socket = datagram_socket;
  		r_addr = null;
  		r_port = 0;
  		datagram = new DatagramPacket(new byte[1],1);
  	}
  
  	/** Creates a new RTP socket (sender and receiver) */
  	public RtpSocket(SipdroidSocket datagram_socket,
  			InetAddress remote_address, int remote_port) {
  		socket = datagram_socket;
  		r_addr = remote_address;
  		r_port = remote_port;
  		datagram = new DatagramPacket(new byte[1],1);
  	}
  
  	/** Returns the RTP SipdroidSocket */
  	public SipdroidSocket getDatagramSocket() {
  		return socket;
  	}
  
  	/** Receives a RTP packet from this socket */
  	public void receive(RtpPacket rtpp) throws IOException {
  		datagram.setData(rtpp.packet);
  		datagram.setLength(rtpp.packet.length);
  		socket.receive(datagram);
  		if (!socket.isConnected())
  			socket.connect(datagram.getAddress(),datagram.getPort());
  		rtpp.packet_len = datagram.getLength();
  	}
  
  	/** Sends a RTP packet from this socket */
  	public void send(RtpPacket rtpp) throws IOException {
  		datagram.setData(rtpp.packet);
  		datagram.setLength(rtpp.packet_len);
  		datagram.setAddress(r_addr);
  		datagram.setPort(r_port);
  		socket.send(datagram);
  	}
  
  	/** Closes this socket */
  	public void close() { // socket.close();
  		socket.close();
  	}
  
  }
  