From 15d0c49e85159b9e27870aff5280c0cd95b103c4 Mon Sep 17 00:00:00 2001 From: xuxiuxi <xuxiuxi@454eff88-639b-444f-9e54-f578c98de674> Date: 星期四, 04 五月 2017 17:16:56 +0800 Subject: [PATCH] --- VisitFace/RtspNativeCodec/app/libs/live555/include/liveMedia/H264or5VideoStreamFramer.hh | 87 +++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 87 insertions(+), 0 deletions(-) diff --git a/VisitFace/RtspNativeCodec/app/libs/live555/include/liveMedia/H264or5VideoStreamFramer.hh b/VisitFace/RtspNativeCodec/app/libs/live555/include/liveMedia/H264or5VideoStreamFramer.hh new file mode 100644 index 0000000..ff6481e --- /dev/null +++ b/VisitFace/RtspNativeCodec/app/libs/live555/include/liveMedia/H264or5VideoStreamFramer.hh @@ -0,0 +1,87 @@ +/********** +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 3 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) 1996-2017 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 const* from, unsigned fromSize); + // returns the size of the copy; it will be <= min(toMaxSize,fromSize) + +#endif -- Gitblit v1.8.0