H265VideoRTPSource.hh

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FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
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// "liveMedia"
// Copyright (c) 1996-2024 Live Networks, Inc.  All rights reserved.
// H.265 Video RTP Sources
// C++ header
 
#ifndef _H265_VIDEO_RTP_SOURCE_HH
#define _H265_VIDEO_RTP_SOURCE_HH
 
#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
#include "MultiFramedRTPSource.hh"
#endif
 
class H265VideoRTPSource: public MultiFramedRTPSource {
public:
  static H265VideoRTPSource*
  createNew(UsageEnvironment& env, Groupsock* RTPgs,
            unsigned char rtpPayloadFormat,
            Boolean expectDONFields = False,
            unsigned rtpTimestampFrequency = 90000);
      // "expectDONFields" is True iff we expect incoming H.265/RTP packets to contain
      // DONL and DOND fields.  I.e., if "tx-mode == "MST" or sprop-depack-buf-nalus > 0".
 
  u_int64_t currentNALUnitAbsDon() const { return fCurrentNALUnitAbsDon; }
      // the 'absolute decoding order number (AbsDon)' for the most-recently delivered NAL unit
 
protected:
  H265VideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
                     unsigned char rtpPayloadFormat,
                     Boolean expectDONFields,                
                     unsigned rtpTimestampFrequency);
      // called only by createNew()
 
  virtual ~H265VideoRTPSource();
 
protected:
  // redefined virtual functions:
  virtual Boolean processSpecialHeader(BufferedPacket* packet,
                                       unsigned& resultSpecialHeaderSize);
  virtual char const* MIMEtype() const;
 
private:
  void computeAbsDonFromDON(u_int16_t DON);
 
private:
  friend class H265BufferedPacket;
  Boolean fExpectDONFields;
  unsigned char fCurPacketNALUnitType;
  u_int16_t fPreviousNALUnitDON;
  u_int64_t fCurrentNALUnitAbsDon;
};
 
#endif