--- a/src/jlibrtp/RtcpPkt.java Sat Jan 23 21:48:58 2010 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,143 +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;
-
-import java.net.InetAddress;
-
-/**
- * Common RTCP packet headers.
- *
- * @author Arne Kepp
- */
-public class RtcpPkt {
- /** Whether a problem has been encountered during parsing */
- protected int problem = 0;
- /** The version, always 2, 2 bits */
- protected int version = 2;
- /** Padding , 1 bit */
- protected int padding = 0;
- /** Number of items, e.g. receiver report blocks. Usage may vary. 5 bits */
- protected int itemCount = 0;
- /** The type of RTCP packet, 8 bits */
- protected int packetType = -1;
- /** The length of the RTCP packet, in 32 bit blocks minus 1. 16 bits */
- protected int length = -1;
- /** The ssrc that sent this, usually dictated by RTP Session */
- protected long ssrc = -1;
-
- /** Contains the actual data (eventually) */
- protected byte[] rawPkt = null;
-
- /** Only used for feedback messages: Time message was generated */
- protected long time = -1;
- /** Only used for feedback message: Whether this packet was received */
- protected boolean received = false;
-
- /**
- * Parses the common header of an RTCP packet
- *
- * @param start
- * where in this.rawPkt the headers start
- * @return true if parsing succeeded and header cheks
- */
- protected boolean parseHeaders(int start) {
- version = ((rawPkt[start + 0] & 0xC0) >>> 6);
- padding = ((rawPkt[start + 0] & 0x20) >>> 5);
- itemCount = (rawPkt[start + 0] & 0x1F);
- packetType = (int) rawPkt[start + 1];
- if (packetType < 0) {
- packetType += 256;
- }
- length = StaticProcs.bytesToUIntInt(rawPkt, start + 2);
-
- if (RTPSession.rtpDebugLevel > 9) {
- System.out.println(" <-> RtcpPkt.parseHeaders() version:" + version
- + " padding:" + padding + " itemCount:" + itemCount
- + " packetType:" + packetType + " length:" + length);
- }
-
- if (packetType > 207 || packetType < 200)
- System.out
- .println("RtcpPkt.parseHeaders problem discovered, packetType "
- + packetType);
-
- if (version == 2 && length < 65536) {
- return true;
- } else {
- System.out
- .println("RtcpPkt.parseHeaders() failed header checks, check size and version");
- this.problem = -1;
- return false;
- }
- }
-
- /**
- * Writes the common header of RTCP packets. The values should be filled in
- * when the packet is initiliazed and this function called at the very end
- * of .encode()
- */
- protected void writeHeaders() {
- byte aByte = 0;
- aByte |= (version << 6);
- aByte |= (padding << 5);
- aByte |= (itemCount);
- rawPkt[0] = aByte;
- aByte = 0;
- aByte |= packetType;
- rawPkt[1] = aByte;
- if (rawPkt.length % 4 != 0)
- System.out
- .println("!!!! RtcpPkt.writeHeaders() rawPkt was not a multiple of 32 bits / 4 octets!");
- StaticProcs.uIntIntToByteWord((rawPkt.length / 4) - 1, rawPkt, 2);
- }
-
- /**
- * This is just a dummy to make Eclipse complain less.
- */
- protected void encode() {
- System.out.println("RtcpPkt.encode() should never be invoked!! "
- + this.packetType);
- }
-
- /**
- * Check whether this packet came from the source we expected.
- *
- * Not currently used!
- *
- * @param adr
- * address that packet came from
- * @param partDb
- * the participant database for the session
- * @return true if this packet came from the expected source
- */
- protected boolean check(InetAddress adr, ParticipantDatabase partDb) {
- // Multicast -> We have to be naive
- if (partDb.rtpSession.mcSession
- && adr.equals(partDb.rtpSession.mcGroup))
- return true;
-
- // See whether this participant is known
- Participant part = partDb.getParticipant(this.ssrc);
- if (part != null && part.rtcpAddress.getAddress().equals(adr))
- return true;
-
- // If not, we should look for someone without SSRC with his ip-address?
- return false;
- }
-}