MPEG4GenericRTPSink.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
Free Software Foundation; either version 3 of the License, or (at your
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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.
 
You should have received a copy of the GNU Lesser General Public License
along with this library; if not, write to the Free Software Foundation, Inc.,
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**********/
// "liveMedia"
// Copyright (c) 1996-2021 Live Networks, Inc.  All rights reserved.
// MPEG4-GENERIC ("audio", "video", or "application") RTP stream sinks
// C++ header
 
#ifndef _MPEG4_GENERIC_RTP_SINK_HH
#define _MPEG4_GENERIC_RTP_SINK_HH
 
#ifndef _MULTI_FRAMED_RTP_SINK_HH
#include "MultiFramedRTPSink.hh"
#endif
 
class MPEG4GenericRTPSink: public MultiFramedRTPSink {
public:
  static MPEG4GenericRTPSink*
  createNew(UsageEnvironment& env, Groupsock* RTPgs,
            u_int8_t rtpPayloadFormat, u_int32_t rtpTimestampFrequency,
            char const* sdpMediaTypeString, char const* mpeg4Mode,
            char const* configString,
            unsigned numChannels = 1);
 
protected:
  MPEG4GenericRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
                      u_int8_t rtpPayloadFormat,
                      u_int32_t rtpTimestampFrequency,
                      char const* sdpMediaTypeString,
                      char const* mpeg4Mode, char const* configString,
                      unsigned numChannels);
        // called only by createNew()
 
  virtual ~MPEG4GenericRTPSink();
 
private: // redefined virtual functions:
  virtual
  Boolean frameCanAppearAfterPacketStart(unsigned char const* frameStart,
                                         unsigned numBytesInFrame) const;
  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
                                      unsigned char* frameStart,
                                      unsigned numBytesInFrame,
                                      struct timeval framePresentationTime,
                                      unsigned numRemainingBytes);
  virtual unsigned specialHeaderSize() const;
 
  virtual char const* sdpMediaType() const;
 
  virtual char const* auxSDPLine(); // for the "a=fmtp:" SDP line
 
private:
  char const* fSDPMediaTypeString;
  char const* fMPEG4Mode;
  char const* fConfigString;
  char* fFmtpSDPLine;
};
 
#endif