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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 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 produces a sequence of I-frame indices from a MPEG-2 Transport Stream |
| | | // C++ header |
| | | |
| | | #ifndef _MPEG2_IFRAME_INDEX_FROM_TRANSPORT_STREAM_HH |
| | | #define _MPEG2_IFRAME_INDEX_FROM_TRANSPORT_STREAM_HH |
| | | |
| | | #ifndef _FRAMED_FILTER_HH |
| | | #include "FramedFilter.hh" |
| | | #endif |
| | | |
| | | #ifndef TRANSPORT_PACKET_SIZE |
| | | #define TRANSPORT_PACKET_SIZE 188 |
| | | #endif |
| | | |
| | | #ifndef MAX_PES_PACKET_SIZE |
| | | #define MAX_PES_PACKET_SIZE 65536 |
| | | #endif |
| | | |
| | | class IndexRecord; // forward |
| | | |
| | | class MPEG2IFrameIndexFromTransportStream: public FramedFilter { |
| | | public: |
| | | static MPEG2IFrameIndexFromTransportStream* |
| | | createNew(UsageEnvironment& env, FramedSource* inputSource); |
| | | |
| | | protected: |
| | | MPEG2IFrameIndexFromTransportStream(UsageEnvironment& env, |
| | | FramedSource* inputSource); |
| | | // called only by createNew() |
| | | virtual ~MPEG2IFrameIndexFromTransportStream(); |
| | | |
| | | private: |
| | | // Redefined virtual functions: |
| | | virtual void doGetNextFrame(); |
| | | |
| | | private: |
| | | static void afterGettingFrame(void* clientData, unsigned frameSize, |
| | | unsigned numTruncatedBytes, |
| | | struct timeval presentationTime, |
| | | unsigned durationInMicroseconds); |
| | | void afterGettingFrame1(unsigned frameSize, |
| | | unsigned numTruncatedBytes, |
| | | struct timeval presentationTime, |
| | | unsigned durationInMicroseconds); |
| | | |
| | | static void handleInputClosure(void* clientData); |
| | | void handleInputClosure1(); |
| | | |
| | | void analyzePAT(unsigned char* pkt, unsigned size); |
| | | void analyzePMT(unsigned char* pkt, unsigned size); |
| | | |
| | | Boolean deliverIndexRecord(); |
| | | Boolean parseFrame(); |
| | | Boolean parseToNextCode(unsigned char& nextCode); |
| | | void compactParseBuffer(); |
| | | void addToTail(IndexRecord* newIndexRecord); |
| | | |
| | | private: |
| | | Boolean fIsH264; // True iff the video is H.264 (encapsulated in a Transport Stream) |
| | | Boolean fIsH265; // True iff the video is H.265 (encapsulated in a Transport Stream) |
| | | unsigned long fInputTransportPacketCounter; |
| | | unsigned fClosureNumber; |
| | | u_int8_t fLastContinuityCounter; |
| | | float fFirstPCR, fLastPCR; |
| | | Boolean fHaveSeenFirstPCR; |
| | | u_int16_t fPMT_PID, fVideo_PID; |
| | | // Note: We assume: 1 program per Transport Stream; 1 video stream per program |
| | | unsigned char fInputBuffer[TRANSPORT_PACKET_SIZE]; |
| | | unsigned char* fParseBuffer; |
| | | unsigned fParseBufferSize; |
| | | unsigned fParseBufferFrameStart; |
| | | unsigned fParseBufferParseEnd; |
| | | unsigned fParseBufferDataEnd; |
| | | IndexRecord* fHeadIndexRecord; |
| | | IndexRecord* fTailIndexRecord; |
| | | }; |
| | | |
| | | #endif |