RawVideoRTPSource.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.
// Raw Video RTP Sources (RFC 4175)
// C++ header
 
#ifndef _RAW_VIDEO_RTP_SOURCE_HH
#define _RAW_VIDEO_RTP_SOURCE_HH
 
#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
#include "MultiFramedRTPSource.hh"
#endif
 
class RawVideoRTPSource: public MultiFramedRTPSource {
public:
  static RawVideoRTPSource* createNew(UsageEnvironment& env, Groupsock* RTPgs,
                                      unsigned char rtpPayloadFormat,
                                      unsigned rtpTimestampFrequency);
 
  u_int16_t currentLineNumber() const; // of the most recently-read/processed scan line
  u_int8_t currentLineFieldId() const; // of the most recently-read/processed scan line (0 or 1)
  u_int16_t currentOffsetWithinLine() const; // of the most recently-read/processed scan line
 
protected:
  RawVideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
                    unsigned char rtpPayloadFormat,
                    unsigned rtpTimestampFrequency = 90000);
      // called only by createNew()
 
  virtual ~RawVideoRTPSource();
 
protected:
  // redefined virtual functions:
  virtual Boolean processSpecialHeader(BufferedPacket* packet,
                                       unsigned& resultSpecialHeaderSize);
  virtual char const* MIMEtype() const;
 
private:
  unsigned fNumLines; // in the most recently read packet
  unsigned fNextLine; // index of the next AU Header to read
  struct LineHeader* fLineHeaders;
 
  friend class RawVideoBufferedPacket;
};
 
#endif