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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.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- **********/
- // "liveMedia"
- // Copyright (c) 1996-2011 Live Networks, Inc. All rights reserved.
- // A class for generating MPEG-2 Transport Stream from one or more input
- // Elementary Stream data sources
- // C++ header
- #ifndef _MPEG2_TRANSPORT_STREAM_MULTIPLEXOR_4_IOS_HH
- #define _MPEG2_TRANSPORT_STREAM_MULTIPLEXOR_4_IOS_HH
- #ifndef _FRAMED_SOURCE_HH
- #include "FramedSource.hh"
- #endif
- #ifndef _MPEG_1OR2_DEMUX_HH
- #include "MPEG1or2Demux.hh" // for SCR
- #endif
- //#define PID_TABLE_SIZE 256
- #define PID_TABLE_SIZE 8192
- class MPEG2TransportStreamMultiplexor4iOS: public FramedSource {
- protected:
- MPEG2TransportStreamMultiplexor4iOS(UsageEnvironment& env);
- virtual ~MPEG2TransportStreamMultiplexor4iOS();
- virtual void awaitNewBuffer(unsigned char* oldBuffer) = 0;
- // implemented by subclasses
- void handleNewBuffer(unsigned char* buffer, unsigned bufferSize,
- int mpegVersion, MPEG1or2Demux::SCR scr);
- // called by "awaitNewBuffer()"
- // Note: For MPEG-4 video, set "mpegVersion" to 4; for H.264 video, set "mpegVersion" to 5.
- private:
- // Redefined virtual functions:
- virtual void doGetNextFrame();
- private:
- void deliverDataToClient(u_int16_t pid, unsigned char* buffer, unsigned bufferSize,
- unsigned& startPositionInBuffer);
- void deliverPATPacket();
- void deliverPMTPacket(Boolean hasChanged);
- void setProgramStreamMap(unsigned frameSize);
- protected:
- Boolean fHaveVideoStreams;
- 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.
- enum SEGMENT_STATE{NEED_PAT,NEED_PMT,NEED_KEYFRAME,STARTED};
- struct {
- unsigned counter;
- int seconds;
- SEGMENT_STATE segmentState_;
- u_int8_t streamType; // for use in Program Maps
- } fPIDState[PID_TABLE_SIZE];
- u_int16_t fPCR_PID, fCurrentPID;
- // Note: We map 8-bit stream_ids directly to PIDs
- MPEG1or2Demux::SCR fPCR;
- unsigned char* fInputBuffer;
- unsigned fInputBufferSize, fInputBufferBytesUsed;
- Boolean fIsFirstAdaptationField;
- };
- #endif
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