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

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