| |
| /*! |
| ************************************************************************** |
| * \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 |
| |
