RtcpPacket.cxx
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上传日期:2013-07-25
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- /* ====================================================================
- * The Vovida Software License, Version 1.0
- *
- * Copyright (c) 2000 Vovida Networks, Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The names "VOCAL", "Vovida Open Communication Application Library",
- * and "Vovida Open Communication Application Library (VOCAL)" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact vocal@vovida.org.
- *
- * 4. Products derived from this software may not be called "VOCAL", nor
- * may "VOCAL" appear in their name, without prior written
- * permission of Vovida Networks, Inc.
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
- * NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL VOVIDA
- * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
- * IN EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
- * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- * ====================================================================
- *
- * This software consists of voluntary contributions made by Vovida
- * Networks, Inc. and many individuals on behalf of Vovida Networks,
- * Inc. For more information on Vovida Networks, Inc., please see
- * <http://www.vovida.org/>.
- *
- */
- static const char* const RtcpPacket_cxx_Version =
- "$Id: RtcpPacket.cxx,v 1.7 2001/02/27 00:55:25 larryt Exp $";
- #include <iostream>
- #include <stdlib.h>
- #include <stdio.h>
- #include <assert.h>
- #include <time.h>
- #include <sys/types.h>
- #include "vtypes.h"
- #include <unistd.h>
- #include <string.h>
- // networking
- #include <sys/types.h>
- #include <sys/socket.h>
- #include <netinet/in.h>
- #include "cpLog.h"
- #include "vsock.hxx"
- #include "rtpTypes.h"
- #include "rtpTools.hxx"
- #include "NtpTime.hxx"
- #include "Rtp.hxx"
- #include "Rtcp.hxx"
- /* ----------------------------------------------------------------- */
- /* --- rtcp Packet Constructor ------------------------------------- */
- /* ----------------------------------------------------------------- */
- RtcpPacket::RtcpPacket ()
- {
- packetData = NULL;
- // create memory allocation
- packetAlloc = PACKETSIZE;
- assert (packetAlloc < RTP_MTU);
- packetData = new char[packetAlloc];
- assert (packetData);
- memset (packetData, 0, packetAlloc);
- unusedSize = packetAlloc;
- }
- RtcpPacket::~RtcpPacket ()
- {
- delete []packetData; packetData = NULL;
- }
- /* --- Size and Locations ------------------------------------------ */
- char* RtcpPacket::getPacketData ()
- {
- return packetData;
- }
- char* RtcpPacket::freeData ()
- {
- return packetData + (packetAlloc - unusedSize);
- }
- int RtcpPacket::allocData (int s)
- {
- if (unusedSize < s)
- {
- //cpLog (LOG_ERR, "RTCP: Out of allocated memory for RTCP packet");
- return -1;
- }
- unusedSize -= s;
- memset (freeData(), 0, s);
- return s;
- }
- /* unused memory */
- int RtcpPacket::getPacketAlloc ()
- {
- return packetAlloc;
- }
- int RtcpPacket::getUnused ()
- {
- return unusedSize;
- }
- void RtcpPacket::setTotalUsage (int size)
- {
- assert (size <= packetAlloc);
- unusedSize = packetAlloc - size;
- }
- int RtcpPacket::getTotalUsage ()
- {
- return packetAlloc - unusedSize;
- }
- /* --- Packet Header functions ------------------------------------- */
- int RtcpPacket::getVersion ()
- {
- RtcpHeader* header = reinterpret_cast < RtcpHeader* > (packetData);
- return header->version;
- }
- int RtcpPacket::getPadbyteFlag ()
- {
- RtcpHeader* header = reinterpret_cast < RtcpHeader* > (packetData);
- return header->padding;
- }
- int RtcpPacket::getCount ()
- {
- RtcpHeader* header = reinterpret_cast < RtcpHeader* > (packetData);
- return header->count;
- }
- RtcpType RtcpPacket::getPayloadType ()
- {
- RtcpHeader* header = reinterpret_cast < RtcpHeader* > (packetData);
- return static_cast < RtcpType > (header->type);
- }
- int RtcpPacket::getLength ()
- {
- RtcpHeader* header = reinterpret_cast < RtcpHeader* > (packetData);
- return ntohs(header->length);
- }
- void RtcpPacket::printPacket ()
- {
- printBits (packetData, getTotalUsage());
- cerr << "n-----------------------------------n";
- }