/************************************************************************* COPYRIGHT AND WARRANTY INFORMATION** Copyright 2001, International Telecommunications Union, Geneva** DISCLAIMER OF WARRANTY** These software programs are available to the user without any* license fee or royalty on an "as is" basis. The ITU disclaims* any and all warranties, whether express, implied, or* statutory, including any implied warranties of merchantability* or of fitness for a particular purpose.  In no event shall the* contributor or the ITU be liable for any incidental, punitive, or* consequential damages of any kind whatsoever arising from the* use of these programs.** This disclaimer of warranty extends to the user of these programs* and user's customers, employees, agents, transferees, successors,* and assigns.** The ITU does not represent or warrant that the programs furnished* hereunder are free of infringement of any third-party patents.* Commercial implementations of ITU-T Recommendations, including* shareware, may be subject to royalty fees to patent holders.* Information regarding the ITU-T patent policy is available from* the ITU Web site at http://www.itu.int.** THIS IS NOT A GRANT OF PATENT RIGHTS - SEE THE ITU-T PATENT POLICY.*************************************************************************//*! *************************************************************************** * * \file rtp.h * * \brief *    Definition of structures and functions to handle RTP headers.  For a *    description of RTP see RFC1889 on http://www.ietf.org * * \date *    30 September 2001 * * \author *    Stephan Wenger   stewe@cs.tu-berlin.de **************************************************************************/#ifndef _RTP_H_#define _RTP_H_#include <stdio.h>#include "global.h"#define MAXRTPPAYLOADLEN  (65536 - 40)    //!< Maximum payload size of an RTP packet#define MAXRTPPACKETSIZE  (65536 - 28)    //!< Maximum size of an RTP packet incl. header#define H26LPAYLOADTYPE 105               //!< RTP paylaod type fixed here for simplicity#define H26LSSRC 0x12345678               //!< SSRC, chosen to simplify debugging#define RTP_TR_TIMESTAMP_MULT 1000        //!< should be something like 27 Mhz / 29.97 Hztypedef struct {  unsigned int v;          //!< Version, 2 bits, MUST be 0x2  unsigned int p;          //!< Padding bit, Padding MUST NOT be used  unsigned int x;          //!< Extension, MUST be zero */  unsigned int cc;         /*!< CSRC count, normally 0 in the absence                                 of RTP mixers */  unsigned int m;          //!< Marker bit  unsigned int pt;         //!< 7 bits, Payload Type, dynamically established  unsigned int seq;        /*!< RTP sequence number, incremented by one for                                 each sent packet */  unsigned int timestamp;  //!< timestamp, 27 MHz for H.26L  unsigned int ssrc;       //!< Synchronization Source, chosen randomly  byte *       payload;    //!< the payload including payload headers  unsigned int paylen;     //!< length of payload in bytes  byte *       packet;     //!< complete packet including header and payload  unsigned int packlen;    //!< length of packet, typically paylen+12} RTPpacket_t;int  RTPSequenceHeader (FILE *out);int  ComposeRTPPacket (RTPpacket_t *p);int  DecomposeRTPpacket (RTPpacket_t *p);int  WriteRTPPacket (RTPpacket_t *p, FILE *f);void DumpRTPHeader (RTPpacket_t *p);int  RTPSequenceHeader(FILE *);void RTPUpdateTimestamp (int tr);int  RTPSliceHeader();int  RTPWriteBits (int Marker, int PacketType, void * bitstream,                    int BitStreamLenInByte, FILE *out);#endif