diff -r f5a5d9237d69 -r e8d6255306f8 src/jlibrtp/RtcpPktRTPFB.java --- a/src/jlibrtp/RtcpPktRTPFB.java Sat Jan 23 21:48:58 2010 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,165 +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() "); - } -}