/**

 * Java RTP Library (jlibrtp)

 * Copyright (C) 2006 Arne Kepp

 * 

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 *

 * This library 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

 * Lesser General Public License for more details.

 * 

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

 */

package jlibrtp;

/**

 * This is a four-directional data structures used for the frame buffer, i.e.

 * buffer for pkts that need to be assimilated into complete frames.

 * 

 * All the actual work is done by PktBuffer.

 * 

 * @author Arne Kepp

 * 

 */

public class PktBufNode {

	/** The next node (RTP Timestamp), looking from the back -> next means older */

	protected PktBufNode nextFrameQueueNode = null;

	/**

	 * The previous node (RTP Timestmap), looking from the back -> prev means

	 * newer

	 */

	protected PktBufNode prevFrameQueueNode = null;

	/**

	 * The next node within the frame, i.e. higher sequence number, same RTP

	 * timestamp

	 */

	protected PktBufNode nextFrameNode = null;

	/** Number of packets with the same RTP timestamp */

	protected int pktCount;

	/** The RTP timeStamp associated with this node */

	protected long timeStamp;

	/** The sequence number associated with this node */

	protected int seqNum;

	/** The payload, a parsed RTP Packet */

	protected RtpPkt pkt = null;

	/**

	 * Create a new packet buffer node based on a packet

	 * 

	 * @param aPkt

	 *            the packet

	 */

	protected PktBufNode(RtpPkt aPkt) {

		initPktBufNode(aPkt);

	}

	public PktBufNode(){

	}

	public void initPktBufNode(RtpPkt aPkt) {

		pkt = aPkt;

		timeStamp = aPkt.getTimeStamp();

		seqNum = aPkt.getSeqNumber();

		pktCount = 1;

	}

}