src/jlibrtp/RtcpPktRTPFB.java
changeset 214 2bf440c54ca5
parent 213 9bdff6cbd120
child 215 5db64229be69
--- a/src/jlibrtp/RtcpPktRTPFB.java	Thu May 28 14:26:06 2009 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,154 +0,0 @@
-/**
- * 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;
-
-/**
- * RTCP packets for RTP Feedback Messages 
- * 
- * In line with RFC 4585, this packet currently only supports NACKs
- * 
- * @author Arne Kepp
- */
-public class RtcpPktRTPFB extends RtcpPkt {
-	/** If this packet was for a different SSRC */
-	protected boolean notRelevant = false;
-	/** SSRC we are sending feeback to */
-	protected long ssrcMediaSource = -1;
-	/** RTP sequence numbers of lost packets */
-	protected int PID[];
-	/** bitmask of following lost packets, shared index with PID */
-	protected int BLP[];
-	
-	/**
-	 * Constructor for RTP Feedback Message
-	 * 
-	 * @param ssrcPacketSender SSRC of sender, taken from RTPSession
-	 * @param ssrcMediaSource SSRC of recipient of this message
-	 * @param FMT the Feedback Message Subtype
-	 * @param PID RTP sequence numbers of lost packets
-	 * @param BLP bitmask of following lost packets, shared index with PID 
-	 */
-	protected RtcpPktRTPFB(long ssrcPacketSender, long ssrcMediaSource, int FMT, int[] PID, int[] BLP) {
-		super.packetType = 205; //RTPFB
-		super.itemCount = FMT; 
-		this.PID = PID;
-		this.BLP = BLP;
-	}
-	
-	/**
-	 * Constructor that parses a raw packet to retrieve information
-	 * 
-	 * @param aRawPkt the raw packet to be parsed
-	 * @param start the start of the packet, in bytes
-	 * @param rtpSession the session on which the callback interface resides
-	 */
-	protected RtcpPktRTPFB(byte[] aRawPkt, int start, RTPSession rtpSession) {		
-		if(RTPSession.rtpDebugLevel > 8) {
-			System.out.println("  -> RtcpPktRTPFB(byte[], int start)");
-		}
-		
-		rawPkt = aRawPkt;
-
-		if(! super.parseHeaders(start) || packetType != 205 || super.length < 2) {
-			if(RTPSession.rtpDebugLevel > 2) {
-				System.out.println(" <-> RtcpPktRTPFB.parseHeaders() etc. problem");
-			}
-			super.problem = -205;
-		} else {
-			//FMT = super.itemCount;
-			
-			ssrcMediaSource = StaticProcs.bytesToUIntLong(aRawPkt,8+start);
-			
-			if(ssrcMediaSource == rtpSession.ssrc) {
-				super.ssrc = StaticProcs.bytesToUIntLong(aRawPkt,4+start);
-				int loopStop = super.length - 2;
-				PID = new int[loopStop];
-				BLP = new int[loopStop];
-				int curStart = 12;
-
-				// Loop over Feedback Control Information (FCI) fields
-				for(int i=0; i< loopStop; i++) {
-					PID[i] = StaticProcs.bytesToUIntInt(aRawPkt, curStart);
-					BLP[i] = StaticProcs.bytesToUIntInt(aRawPkt, curStart + 2);
-					curStart += 4;
-				}
-
-				rtpSession.rtcpAVPFIntf.RTPFBPktReceived(
-						super.ssrc, super.itemCount, PID, BLP);
-			}
-		}
-		
-
-		
-		if(RTPSession.rtpDebugLevel > 8) {
-			System.out.println("  <- RtcpPktRTPFB()");
-		}
-	}
-	
-	/**
-	 * Encode the packet into a byte[], saved in .rawPkt
-	 * 
-	 * CompRtcpPkt will call this automatically
-	 */
-	protected void encode() {
-		super.rawPkt = new byte[12 + this.PID.length*4];
-		
-		byte[] someBytes = StaticProcs.uIntLongToByteWord(super.ssrc);
-		System.arraycopy(someBytes, 0, super.rawPkt, 4, 4);
-		someBytes = StaticProcs.uIntLongToByteWord(this.ssrcMediaSource);
-		System.arraycopy(someBytes, 0, super.rawPkt, 8, 4);
-		
-		// Loop over Feedback Control Information (FCI) fields
-		int curStart = 12;
-		for(int i=0; i < this.PID.length; i++ ) {
-			someBytes = StaticProcs.uIntIntToByteWord(PID[i]);
-			super.rawPkt[curStart++] = someBytes[0];
-			super.rawPkt[curStart++] = someBytes[1];
-			someBytes = StaticProcs.uIntIntToByteWord(BLP[i]);
-			super.rawPkt[curStart++] = someBytes[0];
-			super.rawPkt[curStart++] = someBytes[1];
-		}
-		writeHeaders();
-	}
-	
-	/** 
-	 * Get the FMT (Feedback Message Type)
-	 * @return value stored in .itemcount, same field
-	 */
-	protected int getFMT() {
-		return this.itemCount;
-	}
-	
-	/**
-	 * Debug purposes only
-	 */
-	protected void debugPrint() {
-		System.out.println("->RtcpPktRTPFB.debugPrint() ");
-		System.out.println("  ssrcPacketSender: " + super.ssrc + "  ssrcMediaSource: " + ssrcMediaSource);
-		
-		if(this.PID != null && this.PID.length < 1) {
-			System.out.println("  No Feedback Control Information (FCI) fields");
-		}
-		
-		for(int i=0; i < this.PID.length; i++ ) {
-			System.out.println("  FCI -> PID: " + PID[i] + "  BLP: " + BLP[i]);
-		}
-		System.out.println("<-RtcpPktRTPFB.debugPrint() ");
-	}
-}