/usr/include/liveMedia/H264or5VideoStreamFramer.hh is in liblivemedia-dev 2016.02.09-1.
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) 1996-2016 Live Networks, Inc. All rights reserved.
// A filter that breaks up a H.264 or H.265 Video Elementary Stream into NAL units.
// C++ header
#ifndef _H264_OR_5_VIDEO_STREAM_FRAMER_HH
#define _H264_OR_5_VIDEO_STREAM_FRAMER_HH
#ifndef _MPEG_VIDEO_STREAM_FRAMER_HH
#include "MPEGVideoStreamFramer.hh"
#endif
class H264or5VideoStreamFramer: public MPEGVideoStreamFramer {
public:
void getVPSandSPSandPPS(u_int8_t*& vps, unsigned& vpsSize,
u_int8_t*& sps, unsigned& spsSize,
u_int8_t*& pps, unsigned& ppsSize) const {
// Returns pointers to copies of the most recently seen VPS (video parameter set)
// SPS (sequence parameter set) and PPS (picture parameter set) NAL units.
// (NULL pointers are returned if the NAL units have not yet been seen.)
vps = fLastSeenVPS; vpsSize = fLastSeenVPSSize;
sps = fLastSeenSPS; spsSize = fLastSeenSPSSize;
pps = fLastSeenPPS; ppsSize = fLastSeenPPSSize;
}
void setVPSandSPSandPPS(u_int8_t* vps, unsigned vpsSize,
u_int8_t* sps, unsigned spsSize,
u_int8_t* pps, unsigned ppsSize) {
// Assigns copies of the VPS, SPS and PPS NAL units. If this function is not called,
// then these NAL units are assigned only if/when they appear in the input stream.
saveCopyOfVPS(vps, vpsSize);
saveCopyOfSPS(sps, spsSize);
saveCopyOfPPS(pps, ppsSize);
}
protected:
H264or5VideoStreamFramer(int hNumber, // 264 or 265
UsageEnvironment& env, FramedSource* inputSource,
Boolean createParser, Boolean includeStartCodeInOutput);
// We're an abstract base class.
virtual ~H264or5VideoStreamFramer();
void saveCopyOfVPS(u_int8_t* from, unsigned size);
void saveCopyOfSPS(u_int8_t* from, unsigned size);
void saveCopyOfPPS(u_int8_t* from, unsigned size);
void setPresentationTime() { fPresentationTime = fNextPresentationTime; }
Boolean isVPS(u_int8_t nal_unit_type);
Boolean isSPS(u_int8_t nal_unit_type);
Boolean isPPS(u_int8_t nal_unit_type);
Boolean isVCL(u_int8_t nal_unit_type);
protected:
int fHNumber;
u_int8_t* fLastSeenVPS;
unsigned fLastSeenVPSSize;
u_int8_t* fLastSeenSPS;
unsigned fLastSeenSPSSize;
u_int8_t* fLastSeenPPS;
unsigned fLastSeenPPSSize;
struct timeval fNextPresentationTime; // the presentation time to be used for the next NAL unit to be parsed/delivered after this
friend class H264or5VideoStreamParser; // hack
};
// A general routine for making a copy of a (H.264 or H.265) NAL unit,
// removing 'emulation' bytes from the copy:
unsigned removeH264or5EmulationBytes(u_int8_t* to, unsigned toMaxSize,
u_int8_t* from, unsigned fromSize);
// returns the size of the copy; it will be <= min(toMaxSize,fromSize)
#endif
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