diff options
Diffstat (limited to 'common/ih264_cavlc_tables.h')
| -rw-r--r-- | common/ih264_cavlc_tables.h | 81 |
1 files changed, 9 insertions, 72 deletions
diff --git a/common/ih264_cavlc_tables.h b/common/ih264_cavlc_tables.h index 78057b5..d64ac54 100644 --- a/common/ih264_cavlc_tables.h +++ b/common/ih264_cavlc_tables.h @@ -20,22 +20,23 @@ /** ****************************************************************************** -* @file ih264_cavlc_tables.h +* @file +* ih264_cavlc_tables.h * * @brief * This file contains enumerations, macros and extern declarations of H264 * cavlc tables * * @author -* Ittiam +* ittiam * -* @remarks -* none +* @remarks +* none ****************************************************************************** */ -#ifndef IH264_CAVLC_TABLES_H_ -#define IH264_CAVLC_TABLES_H_ +#ifndef _IH264_CAVLC_TABLES_H_ +#define _IH264_CAVLC_TABLES_H_ /*****************************************************************************/ /* Constant Macros */ @@ -48,86 +49,22 @@ #define MAX_ZERO_LEFT 6 /*****************************************************************************/ -/* Extern global declarations */ +/* global declarations */ /*****************************************************************************/ -/** - ****************************************************************************** - * @brief Assignment of cbp to a codenum for intra and inter prediction modes - * chroma format idc != 0 - * input : cbp, intra - 0/inter - 1 - * output : codenum - * @remarks Table 9-4 – Assignment of codeNum to values of coded_block_pattern - * for macroblock prediction modes in H264 spec - ****************************************************************************** - */ extern const UWORD8 gu1_cbp_map_tables[48][2]; - -/** - ****************************************************************************** - * @brief total non-zero coefficients and numbers of trailing ones of a residual - * block are mapped to coefftoken using the tables given below. - * input : VLC-Num | Trailing ones | Total coeffs - * output : coeff_token (code word, size of the code word) - * @remarks Table-9-5 coeff_token mapping to TotalCoeff( coeff_token ) - * and TrailingOnes( coeff_token ) in H264 spec - ****************************************************************************** - */ extern const UWORD8 gu1_code_coeff_token_table[3][4][16]; extern const UWORD8 gu1_size_coeff_token_table[3][4][16]; extern const UWORD8 gu1_code_coeff_token_table_chroma[4][4]; extern const UWORD8 gu1_size_coeff_token_table_chroma[4][4]; - -/** - ****************************************************************************** - * @brief Thresholds for determining whether to increment Level table number. - * input : suffix_length - * output : threshold - ****************************************************************************** - */ extern const UWORD8 gu1_threshold_vlc_level[6]; - -/** - ****************************************************************************** - * @brief table for encoding total number of zeros - * input : coeff_token, total zeros - * output : code word, size of the code word - * @remarks Table-9-7, 9-8 total_zeros tables for 4x4 blocks with - * TotalCoeff( coeff_token ) in H264 spec - ****************************************************************************** - */ extern const UWORD8 gu1_size_zero_table[135]; extern const UWORD8 gu1_code_zero_table[135]; extern const UWORD8 gu1_size_zero_table_chroma[9]; extern const UWORD8 gu1_code_zero_table_chroma[9]; - -/** - ****************************************************************************** - * @brief index to access zero table (for speed) - * input : TotalCoeff( coeff_token ) - * output : index to access zero table - ****************************************************************************** - */ extern const UWORD8 gu1_index_zero_table[15]; - -/** - ****************************************************************************** - * @brief table for encoding runs of zeros before - * input : zeros left, runs of zeros before - * output : code word, size of the code word - * @remarks Table-9-10 table for run_before in H264 spec - ****************************************************************************** - */ extern const UWORD8 gu1_size_run_table[42]; extern const UWORD8 gu1_code_run_table[42]; - -/** - ****************************************************************************** - * @brief index to access run table (look up) - * input : zeros left - * output : index to access run table - ****************************************************************************** - */ extern const UWORD8 gu1_index_run_table[7]; -#endif /* IH264_CAVLC_TABLES_H_ */ +#endif /* _IH264_CAVLC_TABLES_H_ */ |