MPEG4ESVideoRTPSink.hh

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/**********
This library is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the
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This library is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
more details.
 
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**********/
// "liveMedia"
// Copyright (c) 1996-2024 Live Networks, Inc.  All rights reserved.
// RTP sink for MPEG-4 Elementary Stream video (RFC 3016)
// C++ header
 
#ifndef _MPEG4ES_VIDEO_RTP_SINK_HH
#define _MPEG4ES_VIDEO_RTP_SINK_HH
 
#ifndef _VIDEO_RTP_SINK_HH
#include "VideoRTPSink.hh"
#endif
 
class MPEG4ESVideoRTPSink: public VideoRTPSink {
public:
  static MPEG4ESVideoRTPSink* createNew(UsageEnvironment& env,
                                        Groupsock* RTPgs, unsigned char rtpPayloadFormat,
                                        u_int32_t rtpTimestampFrequency = 90000);
  static MPEG4ESVideoRTPSink* createNew(UsageEnvironment& env,
                                        Groupsock* RTPgs, unsigned char rtpPayloadFormat, u_int32_t rtpTimestampFrequency,
                                        u_int8_t profileAndLevelIndication, char const* configStr);
    // an optional variant of "createNew()", useful if we know, in advance, the stream's 'configuration' info.
 
 
protected:
  MPEG4ESVideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat, u_int32_t rtpTimestampFrequency,
                      u_int8_t profileAndLevelIndication = 0, char const* configStr = NULL);
        // called only by createNew()
 
  virtual ~MPEG4ESVideoRTPSink();
 
protected: // redefined virtual functions:
  virtual Boolean sourceIsCompatibleWithUs(MediaSource& source);
 
  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
                                      unsigned char* frameStart,
                                      unsigned numBytesInFrame,
                                      struct timeval framePresentationTime,
                                      unsigned numRemainingBytes);
  virtual Boolean allowFragmentationAfterStart() const;
  virtual Boolean
  frameCanAppearAfterPacketStart(unsigned char const* frameStart,
                                 unsigned numBytesInFrame) const;
 
  virtual char const* auxSDPLine();
 
protected:
  Boolean fVOPIsPresent;
 
private:
  u_int8_t fProfileAndLevelIndication;
  unsigned char* fConfigBytes;
  unsigned fNumConfigBytes;
 
  char* fFmtpSDPLine;
};
 
#endif