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Viewing changes to mpeglib/lib/mpegplay/mpegSystemStream.h

  • Committer: Bazaar Package Importer
  • Author(s): Jonathan Riddell
  • Date: 2005-03-24 04:48:58 UTC
  • mfrom: (1.2.1 upstream) (2.1.1 sarge)
  • Revision ID: james.westby@ubuntu.com-20050324044858-8ff88o9jxej6ii3d
Tags: 4:3.4.0-0ubuntu3
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mpeglib/lib/mpegplay/mpegSystemStream.h
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#define __MPEGSYSTEMSTREAM_H
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#include <stdlib.h>
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#include "../input/inputPlugin.h"
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#include "mpegSystemHeader.h"
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#define FLOAT_0x10000 (double)((unsigned long)1 << 16)
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// MPEG2 PACK HEADER
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// SCRbase and SCRext
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//                  32 .......................................0 9.........0
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// [PACK_START_CODE][01---1--][--------][-----1--][--------][-----1--][-------1
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#define ui64 unsigned long
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#define ui32 unsigned int
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#define i64  long
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#define i32  int
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#define MPEG1_CLK_REF  (i64)90000
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#define MPEG2_CLK_REF  (i64)27000000
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#define ZERO                    (i64)0
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#define GET_SCRBASE(buf) ( ((ui64)buf[4]&0xF8)>>3   |  \
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                            (ui64)buf[3]<<5         |  \
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                           ((ui64)buf[2]&0x03)<<13  |  \
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                           ((ui64)buf[2]&0xF8)<<12  |  \
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                            (ui64)buf[1]<<20        |  \
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                           ((ui64)buf[0]&0x03)<<28  |  \
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                            (ui64)buf[0]&0x38 <<27 )
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#define GET_SCREXT(buf)  ( ((ui64)buf[5]&0xFE)>>1  |  \
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                           ((ui64)buf[4]&0x03)<<7 )
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// muxrate
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//      22 ......................0         stl
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// ... [--------][--------][------11][rrrrr---]
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#define GET_MPEG2MUXRATE(buf) ( (ui32)buf[6]<<14  |      \
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                                ((ui32)buf[7])<<6 |      \
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                                ((ui32)buf[8]&0x03)>>2)  \
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#define GET_MPEG2STUFFING(buf) ((buf[9]&0x07))
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// MPEG1 PACK HEADER
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//                      SCR                                            muxrate
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//                     32........................................0    22......
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//[PACK_START_CODE][0010---1][--------][-------1][--------][-------1][1-------]
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#define GET_SCR(buf)   ( ((ui64)buf[4]&0xFE) >>1     | \
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                         ((ui64)buf[3])      <<7     | \
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                         ((ui64)buf[2]&0xFE) <<14    | \
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                         ((ui64)buf[1])      <<22    | \
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                         ((ui64)buf[0]&0x0E) <<29 )
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#define GET_MPEG1_PTS(x) (GET_SCR(x)) //they follow the same pattern
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#define GET_MPEG1_MUXRATE(x) ( ((ui32)x[7]&0xFE) >>1     | \
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                               ((ui32)x[6])          <<7     | \
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                               ((ui32)x[5]&0x7F) <<15 )
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#define GET_MPEG2_PTS_FLAGS(buf) ( ((ui8)buf[3]&0xC0)>>6  )
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// MPEG2 PES packet (optional parameters)
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//                         PTS                      
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//                         32........................................0
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// [PACKET_START_CODE][001x---1][--------][-------1][--------][-------1]
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#define GET_MPEG2_PTS(buf)   GET_MPEG1_PTS(buf)
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#include "tsSystemStream.h"
 
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#include "psSystemStream.h"
 
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#include "pesSystemStream.h"
 
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class MpegSystemStream {
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  int lHasLength;
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  unsigned int syncCode;
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  int lState;
 
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  TSSystemStream*  tsSystemStream;
 
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  PSSystemStream*  psSystemStream;
 
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  PESSystemStream* pesSystemStream;
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 public:
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  MpegSystemStream(InputStream* input);
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  ~MpegSystemStream();
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  // returns true if init successfull
 
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  // returns true if init successful
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  int firstInitialize(MpegSystemHeader* mpegHeader);
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  int nextPacket(MpegSystemHeader* mpegHeader);
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  inline int eof() { return input->eof(); }
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 private:
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  int readSyncCode();
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  int getByteDirect();
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  int readHeader(unsigned int* startCode);
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  int processStartCode(unsigned int startCode,MpegSystemHeader* mpegHeader);
 
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  int demux_ts_pes_buffer(MpegSystemHeader* mpegHeader);
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  int processPackHeader(MpegSystemHeader* mpegHeader);
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  int processSystemHeader(MpegSystemHeader* mpegHeader);
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  int processPacket(unsigned int startCode,MpegSystemHeader* mpegHeader);
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  int processPacketHeader(MpegSystemHeader* mpegHeader);
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  int processMPEG2PacketHeader(MpegSystemHeader* mpegHeader);
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  int processPrivateHeader(MpegSystemHeader* mpegHeader);
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  int readStartCode(unsigned int startCode,MpegSystemHeader* mpegHeader);
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  void readSTD(unsigned char* inputBuffer,MpegSystemHeader* mpegHeader);
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  void readTimeStamp(unsigned char* inputBuffer,unsigned char* hiBit,
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                     unsigned long* low4Bytes);
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  int makeClockTime(unsigned char hiBit, unsigned long low4Bytes,
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                    double * clockTime);
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};