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rtpconnection.h

/*
 * Copyright (c) 2001-2003 Shiman Associates Inc. All Rights Reserved.
 * 
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use, copy,
 * modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */
/*

  This file is a part of JRTPLIB
  Copyright (c) 1999-2000 Jori Liesenborgs

  Contact: jori@lumumba.luc.ac.be

  This library (JRTPLIB) was partially developed for my thesis at the
  School for Knowledge Technology (Belgium/The Netherlands)

  Permission is hereby granted, free of charge, to any person obtaining a
  copy of this software and associated documentation files (the "Software"),
  to deal in the Software without restriction, including without limitation
  the rights to use, copy, modify, merge, publish, distribute, sublicense,
  and/or sell copies of the Software, and to permit persons to whom the
  Software is furnished to do so, subject to the following conditions:

  The above copyright notice and this permission notice shall be included
  in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  IN THE SOFTWARE.

*/

#ifndef RTPCONNECTION_H

#define RTPCONNECTION_H

#include "rtpconfig.h"
#include "rtpdefines.h"
#include "rtpdebug.h"
#include "rtpstructs.h"
#include "rtpdestlist.h"
#include "rtpiptable.h"
#include "rtperror.h"
#include "rtpmcasttable.h"
#include "rtp_transport.h" // for types

#define RECEIVEMODE_ALL                                     0
#define RECEIVEMODE_IGNORESOME                                    1
#define RECEIVEMODE_ACCEPTSOME                                    2

class RTPContributingSources;
struct RawDataBlock;

class RTPConnection                                               RTPDEBUGBASE
{
public:
      RTPConnection();
      ~RTPConnection();
      int Create(int pbase,unsigned long localip);
      int CreateFromStreamSocketPair(int new_session_type, 
                               RTPSOCKET new_rtpsock,
                               RTPSOCKET new_rtcpsock,
                               int localipaddress);
      void Destroy();
      int GetPortBase();
      void SetMaximumPacketSize(int size)                         { maxpacksize = size; }
      int SetToS(int tos);

      int AddDestination(unsigned long ip,int portbase)                 { return destinations.Add(ip,portbase); }
      int DeleteDestination(unsigned long ip,int portbase)              { return destinations.Delete(ip,portbase); }
      void ClearDestinations()                                    { destinations.Clear(); }

      bool SupportsMulticasting();  
      int JoinMulticastGroup(unsigned long mcastIP);
      int LeaveMulticastGroup(unsigned long mcastIP);
      void LeaveAllMulticastGroups();
      int SetMulticastTTL(unsigned char ttl);
      
      int SendRTPData(void *data,int len,RTPContributingSources *srcs,unsigned char pt,bool mark,RTPuint16 seqnr,RTPuint32 timestamp);
      int SendRTPData(void *data,int len,RTPContributingSources *srcs,unsigned char pt,bool mark,RTPuint16 seqnr,RTPuint32 timestamp,unsigned short hdrextID,void *hdrextdata,int numhdrextwords);
      int SendRTCPCompoundData(void *data,int len);
      
      int PollRTP()     { return Poll(true, true); }
      int PollRTCP()    { return Poll(false, true); }
      int PollRTP(bool check_for_data) { return Poll(true, check_for_data); }
      int PollRTCP(bool check_for_data) { return Poll(false, check_for_data); }
      bool RTPDataAvailable()                                     { if (rtp_first == NULL) return false; return true; }
      bool RTCPDataAvailable()                                    { if (rtcp_first == NULL) return false; return true; }
      int ReceiveRTPData(unsigned char **data,int *len,unsigned long *ip,int *port);
      int ReceiveRTCPData(unsigned char **data,int *len,unsigned long *ip,int *port);
      struct timeval GetRTCPReceiveTime()                         { return rtcprecvtime; }

      int SetReceiveMode(int mode)                                { if (mode < 0 || mode > 2) return ERR_RTP_INVALIDRECEIVEMODE; receivemode = mode; return 0; }
                                                                              
      int AddToIgnoreList(unsigned long ip,bool allports,int portbase)  { return ignoreIPs.Add(ip,allports,portbase); }
      int DeleteFromIgnoreList(unsigned long ip,bool allports,int portbase)   { return ignoreIPs.Delete(ip,allports,portbase); }
      void ClearIgnoreList()                                                                          { ignoreIPs.Clear(); }
      int AddToAcceptList(unsigned long ip,bool allports,int portbase)  { return acceptIPs.Add(ip,allports,portbase); }
      int DeleteFromAcceptList(unsigned long ip,bool allports,int portbase)   { return acceptIPs.Delete(ip,allports,portbase); }
      void ClearAcceptList()                                                                          { acceptIPs.Clear(); }

      int GetSendPort()                                     { return sendport; }
      unsigned long GetLocalIP()                                  { return localip; }
      
      RTPSOCKET GetRTPSocket()                                    { return rtpsock; }
      RTPSOCKET GetRTCPSocket()                                   { return rtcpsock; }
      RTPSOCKET GetSendSocket()                                   { return sendsock; }
private:
      int Poll(bool rtp, bool check_for_data);
        int Poll(bool rtp) { return Poll(rtp, true); }
      void FlushPackets();
      unsigned long CalcLocalIP();
      void CloseConnection();

      RTPSOCKET rtpsock,rtcpsock,sendsock;
      int session_type;

      bool socketsopened;
      int portbase,sendport;
      unsigned long localip;

      RTPDestList destinations;
      int receivemode;
      RTPIPTable ignoreIPs,acceptIPs;
      RTPMCastTable mcasttable;
      struct timeval rtcprecvtime;

      int maxpacksize;

      RawDataBlock *rtp_first,*rtp_last;
      RawDataBlock *rtcp_first,*rtcp_last;
      
      unsigned char packetbuffer[RTP_MAXIMUMPACKETSIZE];
};

#endif // RTPCONNECTION_H

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