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elements.h
Package: chapter15.rar [view]
Upload User: hjq518
Upload Date: 2021-12-09
Package Size: 5084k
Code Size: 3k
Category:
Audio program
Development Platform:
Visual C++
- /*!
- **************************************************************************
- * file elements.h
- * brief Header file for elements in H.264 streams
- * date 6.10.2000,
- * version
- * 1.1
- *
- * note
- * Version 1.0 included three partition modes, no DP, 2 partitionsper slice
- * and 4 partitions per slice. As per document VCEG-N72 this is changed
- * in version 1.1 to only two partition modes, one without DP and one with
- * 3 partition per slice
- *
- * author Sebastian Purreiter <sebastian.purreiter@mch.siemens.de>
- * author Stephan Wenger <stewe@cs.tu-berlin.de>
- *
- **************************************************************************
- */
- #ifndef _ELEMENTS_H_
- #define _ELEMENTS_H_
- /*!
- * definition of H.264 syntax elements
- * order of elements follow dependencies for picture reconstruction
- */
- #define MAXPARTITIONMODES 2 //!< maximum possible partition modes as defined in assignSE2partition[][]
- /*!
- * brief lookup-table to assign different elements to partition
- *
- * note here we defined up to 6 different partitions similar to
- * document Q15-k-18 described in the PROGFRAMEMODE.
- * The Sliceheader contains the PSYNC information. par
- *
- * Elements inside a partition are not ordered. They are
- * ordered by occurence in the stream.
- * Assumption: Only partitionlosses are considered. par
- *
- * The texture elements luminance and chrominance are
- * not ordered in the progressive form
- * This may be changed in image.c par
- *
- * -IMPORTANT:
- * Picture- or Sliceheaders must be assigned to partition 0. par
- * Furthermore partitions must follow syntax dependencies as
- * outlined in document Q15-J-23.
- */
- // A note on this table:
- //
- // While the assignment of values in enum data types is specified in C, it is not
- // very ood style to have an "elementnumber", not even as a comment.
- //
- // Hence a copy of the relevant structure from global.h here
- /*
- typedef enum {
- 0 SE_HEADER,
- 1 SE_PTYPE,
- 2 SE_MBTYPE,
- 3 SE_REFFRAME,
- 4 SE_INTRAPREDMODE,
- 5 SE_MVD,
- 6 SE_CBP
- 7 SE_LUM_DC_INTRA,
- 8 SE_CHR_DC_INTRA,
- 9 SE_LUM_AC_INTRA,
- 10 SE_CHR_AC_INTRA,
- 12 SE_LUM_DC_INTER,
- 13 SE_CHR_DC_INTER,
- 14 SE_LUM_AC_INTER,
- 15 SE_CHR_AC_INTER,
- 16 SE_DELTA_QUANT,
- 18 SE_BFRAME,
- 19 SE_EOS,
- 20 SE_MAX_ELEMENTS */ // number of maximum syntax elements
- //} SE_type;
- extern int * assignSE2partition[2];
- extern int assignSE2partition_NoDP[SE_MAX_ELEMENTS];
- extern int assignSE2partition_DP[SE_MAX_ELEMENTS];
- #endif