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MPEG1or2VideoRTPSink.hh
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15 **********/
16 // "liveMedia"
17 // Copyright (c) 1996-2021 Live Networks, Inc. All rights reserved.
18 // RTP sink for MPEG video (RFC 2250)
19 // C++ header
20 
21 #ifndef _MPEG_1OR2_VIDEO_RTP_SINK_HH
22 #define _MPEG_1OR2_VIDEO_RTP_SINK_HH
23 
24 #ifndef _VIDEO_RTP_SINK_HH
25 #include "VideoRTPSink.hh"
26 #endif
27 
29 public:
31 
32 protected:
34  // called only by createNew()
35 
37 
38 private: // redefined virtual functions:
40 
41  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
42  unsigned char* frameStart,
43  unsigned numBytesInFrame,
44  struct timeval framePresentationTime,
45  unsigned numRemainingBytes);
47  virtual
48  Boolean frameCanAppearAfterPacketStart(unsigned char const* frameStart,
49  unsigned numBytesInFrame) const;
50  virtual unsigned specialHeaderSize() const;
51 
52 private:
53  // MPEG video-specific state, used to decide how to fill out the
54  // video-specific header, and when to include multiple 'frames' in a
55  // single outgoing RTP packet. Eventually we should somehow get this
56  // state from the source (MPEG1or2VideoStreamFramer) instead, as the source
57  // already has this info itself.
58  struct {
60  unsigned char picture_coding_type;
61  unsigned char vector_code_bits; // FBV,BFC,FFV,FFC from RFC 2250, sec. 3.4
64  // used to implement frameCanAppearAfterPacketStart()
67 };
68 
69 #endif
unsigned char Boolean
Definition: Boolean.hh:25
virtual Boolean sourceIsCompatibleWithUs(MediaSource &source)
virtual Boolean frameCanAppearAfterPacketStart(unsigned char const *frameStart, unsigned numBytesInFrame) const
struct MPEG1or2VideoRTPSink::@1 fPictureState
virtual unsigned specialHeaderSize() const
MPEG1or2VideoRTPSink(UsageEnvironment &env, Groupsock *RTPgs)
static MPEG1or2VideoRTPSink * createNew(UsageEnvironment &env, Groupsock *RTPgs)
unsigned char picture_coding_type
virtual void doSpecialFrameHandling(unsigned fragmentationOffset, unsigned char *frameStart, unsigned numBytesInFrame, struct timeval framePresentationTime, unsigned numRemainingBytes)
virtual Boolean allowFragmentationAfterStart() const
virtual ~MPEG1or2VideoRTPSink()
FramedSource * source() const
Definition: MediaSink.hh:42