RtpReceiver.hxx
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- #ifndef RTPRECEIVER_HXX
- #define RTPRECEIVER_HXX
- /* ====================================================================
- * 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 $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
- * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- * ====================================================================
- *
- * This software consists of voluntary contributions made by Vovida
- * Networks, Inc. and many individuals on behalf of Vovida Networks,
- * Inc. For more information on Vovida Networks, Inc., please see
- * <http://www.vovida.org/>.
- *
- */
- static const char* const RtpReceiver_hxx_Version =
- "$Id: RtpReceiver.hxx,v 1.18 2001/05/07 19:12:50 kle Exp $";
- #include <sys/types.h>
- #include <map>
- #include "Sptr.hxx"
- #include "Fifo.h"
- #include "rtpTypes.h"
- #include "UdpStack.hxx"
- #include "RtpEvent.hxx"
- #include "NtpTime.hxx"
- #include "RtpEventReceiver.hxx"
- #include "NetworkAddress.h"
- class RtpPacket;
- class RtcpReceiver;
- /// Data structure for RTP Receiver
- class RtpReceiver : public RtpEventReceiver
- {
- public:
- /// using specified port
- RtpReceiver (int localPort,
- RtpPayloadType apiFormat = rtpPayloadPCMU,
- RtpPayloadType networkFormat = rtpPayloadPCMU,
- int jitterNew = 0);
- /// using port range
- RtpReceiver (int localMinPort, int localMaxPort,
- RtpPayloadType apiFormat = rtpPayloadPCMU,
- RtpPayloadType networkFormat = rtpPayloadPCMU,
- int jitterNew = 0);
- ///Giving UdpStack ptr
- RtpReceiver (UdpStack* udp, RtpPayloadType apiFormat = rtpPayloadPCMU,
- RtpPayloadType networkFormat = rtpPayloadPCMU,
- int jitterNew = 0);
- /// consturctor init (don't call this function)
- void constructRtpReceiver (RtpPayloadType apiFormat,
- RtpPayloadType networkFormat,
- int jitterNew);
- ///
- ~RtpReceiver ();
- /** Receive an RTP packet from buffer.
- Do not delete packet, it's used in next recive call as replacement
- @return NULL if not time to play packet
- **/
- RtpPacket* receive ();
- /** Receives an RTP packet from network into buffer
- @return NULL invalid packet, else packet pointer
- **/
- RtpPacket* getPacket ();
- /** Update souce information
- * @return 0 not valid, 1 valid
- **/
- int updateSource (RtpPacket* packet);
- /// Initalize source counters
- void initSource (RtpPacket* packet);
- /** Add source to receiver
- * @return 1 if transmitter on probation
- **/
- int addSource (RtpPacket* packet);
- /// Remove source from receiver
- void removeSource (RtpSrc src, int flag = 0);
- /** Convert from rtp time to ntp time
- * using inital ntp time and sampleRate
- **/
- NtpTime rtp2ntp (RtpTime time);
- /// Clears out buffer
- //void clearBuffer ();
- /// Prints out the sequencing of buffer
- //void printBuffer ();
- /// Empties pending network packets
- void emptyNetwork ();
- ///
- void setRTCPrecv (RtcpReceiver* rtcpRecv);
- ///
- void setApiFormat (RtpPayloadType type, int no_samples, int packetSize = 0,
- RtpPacket* p = NULL, bool print = true);
- ///
- int getApiPktSampleSize ()
- {
- return api_pktSampleSize;
- }
- ///
- void setApiPktSize (int size)
- {
- api_pktSampleSize = size;
- }
- ///
- void setNetworkFormat (RtpPayloadType type, int no_samples, int packetSize = 0,
- RtpPacket* p = NULL, bool print = true);
- ///
- int getNetworkPktSampleSize ()
- {
- return network_pktSampleSize;
- }
- ///
- void setNetworkPktSize (int size)
- {
- network_pktSampleSize = size;
- }
- ///
- int getPacketReceived ()
- {
- return packetReceived;
- }
- ///
- int getPayloadReceived ()
- {
- return payloadReceived;
- }
- ///
- int getJitter ()
- {
- return jitter;
- }
- /// Port this stack is sending its singal
- int getPort ()
- {
- return myStack->getRxPort();
- }
- /// Socket File Descriptor used for select()
- int getSocketFD ()
- {
- return myStack->getSocketFD();
- }
- /// receiver error code;
- RtpReceiverError receiverError;
- /// get ptr of my UdpStack
- UdpStack* getUdpStack()
- {
- return myStack;
- }
- private:
- /// incoming buffer size, including RTP header
- static const int IN_BUFFER_SIZE = 8192;
- /// buffer size for single pkt
- static const int RECV_BUF = 1012;
- /// max misordering tolerated
- static const int MISORDER = 6;
- /// max number of sequental lost packets allowed
- static const int PROB_MAX = 100;
- /// source found flag
- bool sourceSet;
- /// SRC number for this source
- RtpSrc ssrc;
- /// probation set flag
- bool probationSet;
- /// wouldn't listen to this source
- RtpSrc srcProbation;
- /// probation, 0 source valid
- int probation;
- /// inital seqence number
- RtpSeqNumber seedSeq;
- /// inital NTP timestamp
- NtpTime seedNtpTime;
- /// inital RTP timestamp
- RtpTime seedRtpTime;
- /// rtp interval
- RtpTime sampleRate;
- /// payload specific sample rate
- int baseSampleRate;
- /// previous packet
- RtpPacket* prevPacket;
- /// next packet play time
- NtpTime gotime;
- /// number of packets received
- int packetReceived;
- /// number of bytes of payload received
- int payloadReceived;
- /// last packet RtpTime received
- RtpTime prevPacketRtpTime;
- /// last RtpTime play
- RtpTime prevRtpTime;
- /// last NtpTime play
- NtpTime prevNtpTime;
- /// previous sequence number received
- RtpSeqNumber prevSeqRecv;
- /// previous sequence numer played
- RtpSeqNumber prevSeqPlay;
- /// number of received sequence number cycles
- int recvCycles;
- /// number of played sequence number cycles
- int playCycles;
- /// relative transmission time for prev packet
- int transit;
- /// estimated jitter
- int jitter;
- /// jitter time in ms time
- int jitterTime;
- /// jitter buffer
- //map<RtpSeqNumber, RtpPacket*> jitterBuffer;
- /// additional SDES and RTCP information
- RtcpReceiver* rtcpRecv;
- /// allow RTCP stack to probe for information
- friend class RtcpTransmitter;
- /// allow RTCP stack to probe for information
- friend class RtcpReceiver;
- /// format of payload for stack
- RtpPayloadType apiFormat;
- RtpPayloadType networkFormat;
- /// number of samples per RTP packet on api (typical 160 or 240)
- int api_pktSampleSize;
- int network_pktSampleSize;
- /// number of bytes per sample (typical 1 or 2, used for endian conversion)
- int apiFormat_perSampleSize;
- int networkFormat_perSampleSize;
- /// payload specific sample rate
- int apiFormat_clockRate;
- int networkFormat_clockRate;
- int apiFormat_payloadSize; // api_pktSampleSize*apiFormat_perSampleSize
- int networkFormat_payloadSize; // network_pktSampleSize * networkFormat_perSampleSize
- /// inital jitter size
- int jitterSeed;
- /// silence packet template
- char* silenceCodec;
- /// my UDP stack
- UdpStack* myStack;
- /// should I free my stack?
- bool freeStack;
- /// buffer incoming rtp pkt from network
- char inBuff[8192];
- int inPos;
- int playPos;
- };
- #endif // RTPRECEIVER_HXX