/usr/include/liveMedia/MPEG1or2VideoRTPSink.hh is in liblivemedia-dev 2011.12.23-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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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 2.1 of the License, or (at your
option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
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.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
**********/
// "liveMedia"
// Copyright (c) 1996-2012 Live Networks, Inc. All rights reserved.
// RTP sink for MPEG video (RFC 2250)
// C++ header
#ifndef _MPEG_1OR2_VIDEO_RTP_SINK_HH
#define _MPEG_1OR2_VIDEO_RTP_SINK_HH
#ifndef _VIDEO_RTP_SINK_HH
#include "VideoRTPSink.hh"
#endif
class MPEG1or2VideoRTPSink: public VideoRTPSink {
public:
static MPEG1or2VideoRTPSink* createNew(UsageEnvironment& env, Groupsock* RTPgs);
protected:
MPEG1or2VideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs);
// called only by createNew()
virtual ~MPEG1or2VideoRTPSink();
private: // 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 unsigned specialHeaderSize() const;
private:
// MPEG video-specific state, used to decide how to fill out the
// video-specific header, and when to include multiple 'frames' in a
// single outgoing RTP packet. Eventually we should somehow get this
// state from the source (MPEG1or2VideoStreamFramer) instead, as the source
// already has this info itself.
struct {
unsigned temporal_reference;
unsigned char picture_coding_type;
unsigned char vector_code_bits; // FBV,BFC,FFV,FFC from RFC 2250, sec. 3.4
} fPictureState;
Boolean fPreviousFrameWasSlice;
// used to implement frameCanAppearAfterPacketStart()
Boolean fSequenceHeaderPresent;
Boolean fPacketBeginsSlice, fPacketEndsSlice;
};
#endif
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