diff -r c9ff263c29ad -r e684f11070d5 src/jlibrtp/RtcpPktAPP.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/jlibrtp/RtcpPktAPP.java Sat Mar 14 22:15:41 2009 +0100 @@ -0,0 +1,91 @@ +/** + * 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; + +/** + * Application specific RTCP packets + * + * @author Arne Kepp + */ +public class RtcpPktAPP extends RtcpPkt { + /** Name of packet, 4 bytes ASCII */ + protected byte[] pktName = null; + /** Data of packet */ + protected byte[] pktData = null; + + /** + * Constructor for a new Application RTCP packet + * + * @param ssrc the SSRC of the sender, presumably taken from RTPSession + * @param subtype the subtype of packet, application specific + * @param pktName byte[4] representing ASCII name of packet + * @param pktData the byte[4x] data that represents the message itself + */ + protected RtcpPktAPP(long ssrc, int subtype, byte[] pktName, byte[] pktData) { + // Fetch all the right stuff from the database + super.ssrc = ssrc; + super.packetType = 204; + super.itemCount = subtype; + this.pktName = pktName; + this.pktData = pktData; + } + + /** + * Constructor that parses a received Application RTCP packet + * + * @param aRawPkt the raw packet containing the date + * @param start where in the raw packet this packet starts + */ + protected RtcpPktAPP(byte[] aRawPkt, int start) { + super.ssrc = StaticProcs.bytesToUIntLong(aRawPkt,4); + super.rawPkt = aRawPkt; + + if(!super.parseHeaders(start) || packetType != 204 ) { + if(RTPSession.rtpDebugLevel > 2) { + System.out.println(" <-> RtcpPktAPP.parseHeaders() etc. problem"); + } + super.problem = -204; + } else { + //System.out.println("super.length: " + super.length); + if(super.length > 1) { + pktName = new byte[4]; + System.arraycopy(aRawPkt, 8, pktName, 0, 4); + } + if(super.length > 2) { + pktData = new byte[(super.length+1)*4 - 12]; + System.arraycopy(aRawPkt, 12, pktData, 0, pktData.length); + } + } + } + + /** + * Encode the packet into a byte[], saved in .rawPkt + * + * CompRtcpPkt will call this automatically + */ + protected void encode() { + super.rawPkt = new byte[12 + this.pktData.length]; + byte[] tmp = StaticProcs.uIntLongToByteWord(super.ssrc); + System.arraycopy(tmp, 0, super.rawPkt, 4, 4); + System.arraycopy(this.pktName, 0, super.rawPkt, 8, 4); + System.arraycopy(this.pktData, 0, super.rawPkt, 12, this.pktData.length); + writeHeaders(); + //System.out.println("ENCODE: " + super.length + " " + rawPkt.length + " " + pktData.length); + } +}