rtppacket.h

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// ##########################################################################
// ####                                                                  ####
// ####                      RTP Audio Server Project                    ####
// ####                    ============================                  ####
// ####                                                                  ####
// #### RTP Packet                                                       ####
// ####                                                                  ####
// #### 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 RTPPACKET_H
#define RTPPACKET_H


#include "system.h"
#include "socket.h"


namespace Coral {
namespace RTPConstants {


const cardinal RTPMaxPayloadLimit = 8192;

const cardinal RTPDefaultMaxPayload = 1376;

const cardinal RTPDefaultHeaderSize = 12;

const card8 RTPVersion = 2;

const double RTPMicroSecondsPerTimeStamp = 1000.0 / 16.0;


#ifdef USE_TRANSPORTINFO

const cardinal RTPMaxQualityLayers = 4;

#else

const cardinal RTPMaxQualityLayers = 16;

#endif


}
}


namespace Coral {


class RTPPacket
{
   // ====== Constructor ====================================================
   public:
   RTPPacket();   


   // ====== Get methods ====================================================
   inline card8 getVersion() const;

   inline card8 getPadding() const;

   inline card8 getExtension() const;

   inline card8 getCSRCCount() const;

   inline bool getMarker() const;

   inline card8 getPayloadType() const;

   inline card16 getSequenceNumber() const;

   inline card32 getTimeStamp() const;

   inline card32 getSSRC() const;

   inline card32 getCSRC(cardinal index) const;


   inline cardinal calculateHeaderSize() const;

   inline char* getPayloadData() const;

   inline cardinal getMaxPayloadSize() const;
  

   // ====== Set methods ====================================================
   inline void setVersion(const card8 version);

   inline void setPadding(const card8 padding);
   
   inline void setExtension(const card8 extension);

   inline void setCSRCCount(const card8 count);

   inline void setMarker(const bool marker);

   inline void setPayloadType(const card8 payloadType);

   inline void setSequenceNumber(const card16 sequenceNumber);

   inline void setTimeStamp(const card32 timeStamp);

   inline void setSSRC(const card32 ssrc);

   inline void setCSRC(const cardinal index, const card32 csrc);


   friend ostream& operator<<(ostream& os, const RTPPacket& packet);


   // ====== Private data ===================================================   
   private:
#if CPU_BYTEORDER == BIG_ENDIAN
   card8 V:2;                 // Version
   card8 P:1;                 // Padding
   card8 X:1;                 // Extension
   card8 CC:4;                // CSRC Count
   card8 M:1;                 // Marker
   card8 PT:7;                // Payload Type
#elif CPU_BYTEORDER == LITTLE_ENDIAN
   card8 CC:4;                // CSRC Count
   card8 X:1;                 // Extension
   card8 P:1;                 // Padding
   card8 V:2;                 // Version
   card8 PT:7;                // Payload Type
   card8 M:1;                 // Marker
#else
#error "Unknown CPU_BYTEORDER setting!"
#endif
   card16 SequenceNumber;           // Sequence number
   card32 TimeStamp;                // TimeStamp
   card32 SSRC;                     // Synchronization Source (SSRC) identifier
   card32 CSRC[16];                 // Contributing Source (CSRC) identifiers
   char   Data[RTPConstants::RTPMaxPayloadLimit];    // Payload data
};


}


#include "rtppacket.icc"


#endif