96 lines
3.2 KiB
C++
96 lines
3.2 KiB
C++
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/**********
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This library is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by the
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Free Software Foundation; either version 3 of the License, or (at your
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option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
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This library is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
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more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this library; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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**********/
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// "liveMedia"
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// Copyright (c) 1996-2024 Live Networks, Inc. All rights reserved.
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// A filter that produces a sequence of I-frame indices from a MPEG-2 Transport Stream
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// C++ header
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#ifndef _MPEG2_IFRAME_INDEX_FROM_TRANSPORT_STREAM_HH
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#define _MPEG2_IFRAME_INDEX_FROM_TRANSPORT_STREAM_HH
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#ifndef _FRAMED_FILTER_HH
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#include "FramedFilter.hh"
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#endif
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#ifndef TRANSPORT_PACKET_SIZE
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#define TRANSPORT_PACKET_SIZE 188
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#endif
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#ifndef MAX_PES_PACKET_SIZE
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#define MAX_PES_PACKET_SIZE 65536
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#endif
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class IndexRecord; // forward
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class LIVEMEDIA_API MPEG2IFrameIndexFromTransportStream: public FramedFilter {
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public:
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static MPEG2IFrameIndexFromTransportStream*
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createNew(UsageEnvironment& env, FramedSource* inputSource);
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protected:
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MPEG2IFrameIndexFromTransportStream(UsageEnvironment& env,
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FramedSource* inputSource);
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// called only by createNew()
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virtual ~MPEG2IFrameIndexFromTransportStream();
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private:
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// Redefined virtual functions:
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virtual void doGetNextFrame();
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private:
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static void afterGettingFrame(void* clientData, unsigned frameSize,
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unsigned numTruncatedBytes,
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struct timeval presentationTime,
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unsigned durationInMicroseconds);
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void afterGettingFrame1(unsigned frameSize,
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unsigned numTruncatedBytes,
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struct timeval presentationTime,
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unsigned durationInMicroseconds);
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static void handleInputClosure(void* clientData);
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void handleInputClosure1();
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void analyzePAT(unsigned char* pkt, unsigned size);
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void analyzePMT(unsigned char* pkt, unsigned size);
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Boolean deliverIndexRecord();
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Boolean parseFrame();
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Boolean parseToNextCode(unsigned char& nextCode);
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void compactParseBuffer();
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void addToTail(IndexRecord* newIndexRecord);
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private:
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Boolean fIsH264; // True iff the video is H.264 (encapsulated in a Transport Stream)
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Boolean fIsH265; // True iff the video is H.265 (encapsulated in a Transport Stream)
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unsigned long fInputTransportPacketCounter;
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unsigned fClosureNumber;
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u_int8_t fLastContinuityCounter;
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float fFirstPCR, fLastPCR;
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Boolean fHaveSeenFirstPCR;
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u_int16_t fPMT_PID, fVideo_PID;
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// Note: We assume: 1 program per Transport Stream; 1 video stream per program
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unsigned char fInputBuffer[TRANSPORT_PACKET_SIZE];
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unsigned char* fParseBuffer;
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unsigned fParseBufferSize;
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unsigned fParseBufferFrameStart;
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unsigned fParseBufferParseEnd;
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unsigned fParseBufferDataEnd;
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IndexRecord* fHeadIndexRecord;
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IndexRecord* fTailIndexRecord;
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};
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#endif
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