79 lines
2.7 KiB
C++
79 lines
2.7 KiB
C++
/**********
|
|
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) 1996-2024 Live Networks, Inc. All rights reserved.
|
|
// A filter that passes through (unchanged) chunks that contain an integral number
|
|
// of MPEG-2 Transport Stream packets, but returning (in "fDurationInMicroseconds")
|
|
// an updated estimate of the time gap between chunks.
|
|
// C++ header
|
|
|
|
#ifndef _MPEG2_TRANSPORT_STREAM_FRAMER_HH
|
|
#define _MPEG2_TRANSPORT_STREAM_FRAMER_HH
|
|
|
|
#ifndef _FRAMED_FILTER_HH
|
|
#include "FramedFilter.hh"
|
|
#endif
|
|
|
|
#ifndef _HASH_TABLE_HH
|
|
#include "HashTable.hh"
|
|
#endif
|
|
|
|
class LIVEMEDIA_API MPEG2TransportStreamFramer: public FramedFilter {
|
|
public:
|
|
static MPEG2TransportStreamFramer*
|
|
createNew(UsageEnvironment& env, FramedSource* inputSource);
|
|
|
|
u_int64_t tsPacketCount() const { return fTSPacketCount; }
|
|
|
|
void changeInputSource(FramedSource* newInputSource) { fInputSource = newInputSource; }
|
|
|
|
void clearPIDStatusTable();
|
|
void setNumTSPacketsToStream(unsigned long numTSRecordsToStream);
|
|
void setPCRLimit(float pcrLimit);
|
|
|
|
protected:
|
|
MPEG2TransportStreamFramer(UsageEnvironment& env, FramedSource* inputSource);
|
|
// called only by createNew()
|
|
virtual ~MPEG2TransportStreamFramer();
|
|
|
|
private:
|
|
// Redefined virtual functions:
|
|
virtual void doGetNextFrame();
|
|
virtual void doStopGettingFrames();
|
|
|
|
private:
|
|
static void afterGettingFrame(void* clientData, unsigned frameSize,
|
|
unsigned numTruncatedBytes,
|
|
struct timeval presentationTime,
|
|
unsigned durationInMicroseconds);
|
|
void afterGettingFrame1(unsigned frameSize,
|
|
struct timeval presentationTime);
|
|
|
|
Boolean updateTSPacketDurationEstimate(unsigned char* pkt, double timeNow);
|
|
|
|
private:
|
|
u_int64_t fTSPacketCount;
|
|
double fTSPacketDurationEstimate;
|
|
HashTable* fPIDStatusTable;
|
|
u_int64_t fTSPCRCount;
|
|
Boolean fLimitNumTSPacketsToStream;
|
|
unsigned long fNumTSPacketsToStream; // used iff "fLimitNumTSPacketsToStream" is True
|
|
Boolean fLimitTSPacketsToStreamByPCR;
|
|
float fPCRLimit; // used iff "fLimitTSPacketsToStreamByPCR" is True
|
|
};
|
|
|
|
#endif
|