rtcpsender.h

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// ##########################################################################
// ####                                                                  ####
// ####                      RTP Audio Server Project                    ####
// ####                    ============================                  ####
// ####                                                                  ####
// #### RTCP Sender                                                      ####
// ####                                                                  ####
// #### Version 1.00  --  February 16, 2001                              ####
// ####                                                                  ####
// #### Copyright (C) 1999  Thomas Dreibholz                             ####
// ####               2000  Universität Bonn, Abt. IV                    ####
// ####               2001  EMail: dreibh@iem.uni-due.de                 ####
// ####                     WWW:   https://www.uni-due.de/~be0001        ####
// ####                                                                  ####
// ##########################################################################


#ifndef RTCPSENDER_H
#define RTCPSENDER_H


#include "system.h"
#include "socket.h"
#include "timedthread.h"
#include "rtcppacket.h"
#include "rtpreceiver.h"
#include "randomizer.h"


#include <multimap.h>
#include <algo.h>


namespace Coral {


class RTCPSender : public TimedThread
{
   // ====== Constructor/Destructor =========================================
   public:
   RTCPSender();

   RTCPSender(const card32 ssrc,
              Socket*      senderSocket,
              RTPReceiver* receiver,
              const card64 bandwidth);

   ~RTCPSender();


   // ====== Initialize =====================================================
   void init(const card32 ssrc,
             Socket*      senderSocket,
             RTPReceiver* receiver,
             const card64 bandwidth);


   // ====== RTCP packet sending functions ==================================
   integer sendApp(const char* name, const void* data, const cardinal dataLength);

   integer sendBye();

   integer sendReport();

   integer sendSDES();

   bool addSDESItem(const card8 type, const void* data, const card8 length = 0);

   void removeSDESItem(const card8 type);


   // ====== Private data ===================================================
   private:
   void timerEvent();
   double computeTransmissionInterval();

   SocketAddress*                                   ReceiverAddress;
   Socket*                                          SenderSocket;
   RTPReceiver*                                     Receiver;
   card32                                           SSRC;
   multimap<const card8,RTCPSourceDescriptionItem*> SDESItemSet;
   Randomizer                                       Random;

   bool    Initial;         // True, if application has not yet sent an RTCP packet
   bool    WeSent;          // True, if data sent since 2nd previous RTCP report
   integer Senders;         // Most current estimate for nr. of session senders
   integer Members;         // Most current estimate for nr. of session members
   double  RTCPBandwidth;   // Bandwidth for RTCP in octets/second
   double  AverageRTCPSize; // Average compound RTCP packet size
};


}


#endif