From 9e5babf9db52e64bdae60137be7696e56241fca6 Mon Sep 17 00:00:00 2001
From: xingzilong <xingzilong@454eff88-639b-444f-9e54-f578c98de674>
Date: 星期五, 18 八月 2017 18:12:17 +0800
Subject: [PATCH] H264 NALU解析 并在RTSPServer判断
---
VisitFace/RtspNativeCodec/app/libs/live555/include/liveMedia/MPEG2TransportStreamTrickModeFilter.hh | 99 +++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 99 insertions(+), 0 deletions(-)
diff --git a/VisitFace/RtspNativeCodec/app/libs/live555/include/liveMedia/MPEG2TransportStreamTrickModeFilter.hh b/VisitFace/RtspNativeCodec/app/libs/live555/include/liveMedia/MPEG2TransportStreamTrickModeFilter.hh
new file mode 100644
index 0000000..ecb4c73
--- /dev/null
+++ b/VisitFace/RtspNativeCodec/app/libs/live555/include/liveMedia/MPEG2TransportStreamTrickModeFilter.hh
@@ -0,0 +1,99 @@
+/**********
+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 converts a MPEG Transport Stream file - with corresponding index file
+// - to a corresponding Video Elementary Stream. It also uses a "scale" parameter
+// to implement 'trick mode' (fast forward or reverse play, using I-frames) on
+// the video stream.
+// C++ header
+
+#ifndef _MPEG2_TRANSPORT_STREAM_TRICK_MODE_FILTER_HH
+#define _MPEG2_TRANSPORT_STREAM_TRICK_MODE_FILTER_HH
+
+#ifndef _FRAMED_FILTER_HH
+#include "FramedFilter.hh"
+#endif
+
+#ifndef _MPEG2_TRANSPORT_STREAM_INDEX_FILE_HH
+#include "MPEG2TransportStreamIndexFile.hh"
+#endif
+
+#ifndef TRANSPORT_PACKET_SIZE
+#define TRANSPORT_PACKET_SIZE 188
+#endif
+
+class MPEG2TransportStreamTrickModeFilter: public FramedFilter {
+public:
+ static MPEG2TransportStreamTrickModeFilter*
+ createNew(UsageEnvironment& env, FramedSource* inputSource,
+ MPEG2TransportStreamIndexFile* indexFile, int scale);
+
+ Boolean seekTo(unsigned long tsPacketNumber, unsigned long indexRecordNumber);
+
+ unsigned long nextIndexRecordNum() const { return fNextIndexRecordNum; }
+
+ void forgetInputSource() { fInputSource = NULL; }
+ // this lets us delete this without also deleting the input Transport Stream
+
+protected:
+ MPEG2TransportStreamTrickModeFilter(UsageEnvironment& env, FramedSource* inputSource,
+ MPEG2TransportStreamIndexFile* indexFile, int scale);
+ // called only by createNew()
+ virtual ~MPEG2TransportStreamTrickModeFilter();
+
+private:
+ // Redefined virtual functions:
+ virtual void doGetNextFrame();
+ virtual void doStopGettingFrames();
+
+private:
+ void attemptDeliveryToClient();
+ void seekToTransportPacket(unsigned long tsPacketNum);
+ void readTransportPacket(unsigned long tsPacketNum); // asynchronously
+
+ static void afterGettingFrame(void* clientData, unsigned frameSize,
+ unsigned numTruncatedBytes,
+ struct timeval presentationTime,
+ unsigned durationInMicroseconds);
+ void afterGettingFrame1(unsigned frameSize);
+
+ static void onSourceClosure(void* clientData);
+ void onSourceClosure1();
+
+private:
+ Boolean fHaveStarted;
+ MPEG2TransportStreamIndexFile* fIndexFile;
+ int fScale; // absolute value
+ int fDirection; // 1 => forward; -1 => reverse
+ enum {
+ SKIPPING_FRAME,
+ DELIVERING_SAVED_FRAME,
+ SAVING_AND_DELIVERING_FRAME
+ } fState;
+ unsigned fFrameCount;
+ unsigned long fNextIndexRecordNum; // next to be read from the index file
+ unsigned long fNextTSPacketNum; // next to be read from the transport stream file
+ unsigned char fInputBuffer[TRANSPORT_PACKET_SIZE];
+ unsigned long fCurrentTSPacketNum; // corresponding to data currently in the buffer
+ unsigned long fDesiredTSPacketNum;
+ u_int8_t fDesiredDataOffset, fDesiredDataSize;
+ float fDesiredDataPCR, fFirstPCR;
+ unsigned long fSavedFrameIndexRecordStart;
+ unsigned long fSavedSequentialIndexRecordNum;
+ Boolean fUseSavedFrameNextTime;
+};
+
+#endif
--
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