/usr/include/liveMedia/MPEG4VideoStreamDiscreteFramer.hh is in liblivemedia-dev 2011.12.23-1.
This file is owned by root:root, with mode 0o644.
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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.
// A simplified version of "MPEG4VideoStreamFramer" that takes only complete,
// discrete frames (rather than an arbitrary byte stream) as input.
// This avoids the parsing and data copying overhead of the full
// "MPEG4VideoStreamFramer".
// C++ header
#ifndef _MPEG4_VIDEO_STREAM_DISCRETE_FRAMER_HH
#define _MPEG4_VIDEO_STREAM_DISCRETE_FRAMER_HH
#ifndef _MPEG4_VIDEO_STREAM_FRAMER_HH
#include "MPEG4VideoStreamFramer.hh"
#endif
class MPEG4VideoStreamDiscreteFramer: public MPEG4VideoStreamFramer {
public:
static MPEG4VideoStreamDiscreteFramer*
createNew(UsageEnvironment& env, FramedSource* inputSource);
protected:
MPEG4VideoStreamDiscreteFramer(UsageEnvironment& env,
FramedSource* inputSource);
// called only by createNew()
virtual ~MPEG4VideoStreamDiscreteFramer();
protected:
// redefined virtual functions:
virtual void doGetNextFrame();
protected:
static void afterGettingFrame(void* clientData, unsigned frameSize,
unsigned numTruncatedBytes,
struct timeval presentationTime,
unsigned durationInMicroseconds);
void afterGettingFrame1(unsigned frameSize,
unsigned numTruncatedBytes,
struct timeval presentationTime,
unsigned durationInMicroseconds);
Boolean getNextFrameBit(u_int8_t& result);
Boolean getNextFrameBits(unsigned numBits, u_int32_t& result);
// Which are used by:
void analyzeVOLHeader();
protected:
u_int32_t vop_time_increment_resolution;
unsigned fNumVTIRBits;
// # of bits needed to count to "vop_time_increment_resolution"
struct timeval fLastNonBFramePresentationTime;
unsigned fLastNonBFrameVop_time_increment;
private:
unsigned fNumBitsSeenSoFar; // used by the getNextFrameBit*() routines
};
#endif
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