/**********
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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) 1996-2017 Live Networks, Inc. All rights reserved.
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// A filter that passes through (unchanged) chunks that contain an integral number
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// of MPEG-2 Transport Stream packets, but returning (in "fDurationInMicroseconds")
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// an updated estimate of the time gap between chunks.
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// C++ header
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#ifndef _MPEG2_TRANSPORT_STREAM_FRAMER_HH
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#define _MPEG2_TRANSPORT_STREAM_FRAMER_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 _HASH_TABLE_HH
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#include "HashTable.hh"
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#endif
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class MPEG2TransportStreamFramer: public FramedFilter {
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public:
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static MPEG2TransportStreamFramer*
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createNew(UsageEnvironment& env, FramedSource* inputSource);
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u_int64_t tsPacketCount() const { return fTSPacketCount; }
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void changeInputSource(FramedSource* newInputSource) { fInputSource = newInputSource; }
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void clearPIDStatusTable();
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void setNumTSPacketsToStream(unsigned long numTSRecordsToStream);
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void setPCRLimit(float pcrLimit);
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protected:
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MPEG2TransportStreamFramer(UsageEnvironment& env, FramedSource* inputSource);
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// called only by createNew()
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virtual ~MPEG2TransportStreamFramer();
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private:
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// Redefined virtual functions:
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virtual void doGetNextFrame();
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virtual void doStopGettingFrames();
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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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struct timeval presentationTime);
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Boolean updateTSPacketDurationEstimate(unsigned char* pkt, double timeNow);
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private:
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u_int64_t fTSPacketCount;
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double fTSPacketDurationEstimate;
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HashTable* fPIDStatusTable;
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u_int64_t fTSPCRCount;
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Boolean fLimitNumTSPacketsToStream;
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unsigned long fNumTSPacketsToStream; // used iff "fLimitNumTSPacketsToStream" is True
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Boolean fLimitTSPacketsToStreamByPCR;
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float fPCRLimit; // used iff "fLimitTSPacketsToStreamByPCR" is True
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};
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#endif
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