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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 2.1 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.,
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
**********/
// "liveMedia"
// Copyright (c) 1996-2004 Live Networks, Inc. All rights reserved.
// A filter for converting a stream of MPEG PES packets to a MPEG-2 Transport Stream
// C++ header
#ifndef _MPEG2_TRANSPORT_STREAM_FROM_PES_SOURCE_HH
#define _MPEG2_TRANSPORT_STREAM_FROM_PES_SOURCE_HH
#ifndef _FRAMED_FILTER_HH
#include "FramedFilter.hh"
#endif
#ifndef _MPEG_1OR2_DEMUXED_ELEMENTARY_STREAM_HH
#include "MPEG1or2DemuxedElementaryStream.hh"
#endif
#define PID_TABLE_SIZE 256
class MPEG2TransportStreamFromPESSource: public FramedFilter {
public:
static MPEG2TransportStreamFromPESSource*
createNew(UsageEnvironment& env, MPEG1or2DemuxedElementaryStream* inputSource);
protected:
MPEG2TransportStreamFromPESSource(UsageEnvironment& env,
MPEG1or2DemuxedElementaryStream* inputSource);
// called only by createNew()
virtual ~MPEG2TransportStreamFromPESSource();
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);
void deliverDataToClient(u_int8_t pid, unsigned char* buffer, unsigned bufferSize,
unsigned& startPositionInBuffer);
void deliverPATPacket();
void deliverPMTPacket(Boolean hasChanged);
void setProgramStreamMap(unsigned frameSize);
private:
unsigned fOutgoingPacketCounter;
unsigned fProgramMapVersion;
u_int8_t fPreviousInputProgramMapVersion, fCurrentInputProgramMapVersion;
// These two fields are used if we see "program_stream_map"s in the input.
struct {
unsigned counter;
u_int8_t streamType; // for use in Program Maps
} fPIDState[PID_TABLE_SIZE];
u_int8_t fPCR_PID, fCurrentPID;
// Note: We map 8-bit stream_ids directly to PIDs
unsigned char fPCRHighBit;
u_int32_t fPCRRemainingBits;
u_int16_t fPCRExtension;
unsigned char* fInputBuffer;
unsigned fInputBufferSize, fInputBufferBytesUsed;
};
#endif
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