diff options
Diffstat (limited to 'encoder/ih264e_cabac_encode.c')
| -rw-r--r-- | encoder/ih264e_cabac_encode.c | 1074 |
1 files changed, 507 insertions, 567 deletions
diff --git a/encoder/ih264e_cabac_encode.c b/encoder/ih264e_cabac_encode.c index e49ab58..156632c 100644 --- a/encoder/ih264e_cabac_encode.c +++ b/encoder/ih264e_cabac_encode.c @@ -21,20 +21,34 @@ /** ******************************************************************************* * @file -* ih264e_cabac.c +* ih264e_cabac_encode.c * * @brief * Contains all functions to encode in CABAC entropy mode * -* * @author -* Doney Alex -* -* @par List of Functions: +* ittiam * +* @par List of Functions +* - ih264e_cabac_enc_mb_skip +* - ih264e_cabac_enc_intra_mb_type +* - ih264e_cabac_enc_4x4mb_modes +* - ih264e_cabac_enc_chroma_predmode +* - ih264e_cabac_enc_cbp +* - ih264e_cabac_enc_mb_qp_delta +* - ih264e_cabac_write_coeff4x4 +* - ih264e_cabac_encode_residue_luma_dc +* - ih264e_cabac_write_chroma_residue +* - ih264e_cabac_encode_residue +* - ih264e_cabac_enc_ctx_mvd +* - ih264e_cabac_enc_mvds_p16x16 +* - ih264e_cabac_enc_mvds_b16x16 +* - ih264e_write_islice_mb_cabac +* - ih264e_write_pslice_mb_cabac +* - ih264e_write_bslice_mb_cabac * * @remarks -* None +* none * ******************************************************************************* */ @@ -43,100 +57,55 @@ /* File Includes */ /*****************************************************************************/ -/* System include files */ +/* System Include Files */ #include <stdio.h> #include <assert.h> #include <limits.h> #include <string.h> -/* User include files */ +/* User Include Files */ #include "ih264e_config.h" #include "ih264_typedefs.h" #include "iv2.h" #include "ive2.h" + #include "ih264_debug.h" -#include "ih264_defs.h" -#include "ih264e_defs.h" #include "ih264_macros.h" -#include "ih264e_error.h" -#include "ih264e_bitstream.h" -#include "ime_distortion_metrics.h" -#include "ime_defs.h" -#include "ime_structs.h" #include "ih264_error.h" +#include "ih264_defs.h" +#include "ih264_mem_fns.h" +#include "ih264_padding.h" #include "ih264_structs.h" #include "ih264_trans_quant_itrans_iquant.h" #include "ih264_inter_pred_filters.h" -#include "ih264_mem_fns.h" -#include "ih264_padding.h" -#include "ih264_platform_macros.h" #include "ih264_intra_pred_filters.h" #include "ih264_deblk_edge_filters.h" +#include "ih264_cavlc_tables.h" #include "ih264_cabac_tables.h" +#include "ih264_platform_macros.h" + +#include "ime_defs.h" +#include "ime_distortion_metrics.h" +#include "ime_structs.h" + #include "irc_cntrl_param.h" #include "irc_frame_info_collector.h" -#include "ih264e_rate_control.h" + +#include "ih264e_error.h" +#include "ih264e_defs.h" +#include "ih264e_bitstream.h" #include "ih264e_cabac_structs.h" #include "ih264e_structs.h" -#include "ih264e_cabac.h" #include "ih264e_encode_header.h" -#include "ih264_cavlc_tables.h" -#include "ih264e_cavlc.h" +#include "ih264e_cabac.h" #include "ih264e_statistics.h" #include "ih264e_trace.h" /*****************************************************************************/ -/* Function Definitions */ +/* Global Definitions */ /*****************************************************************************/ - - - -/** - ******************************************************************************* - * - * @brief - * Encodes mb_skip_flag using CABAC entropy coding mode. - * - * @param[in] u1_mb_skip_flag - * mb_skip_flag - * - * @param[in] ps_cabac_ctxt - * Pointer to cabac context structure - * - * @param[in] u4_ctxidx_offset - * ctxIdxOffset for mb_skip_flag context - * - * @returns - * - * @remarks - * None - * - ******************************************************************************* - */ -static void ih264e_cabac_enc_mb_skip(UWORD8 u1_mb_skip_flag, - cabac_ctxt_t *ps_cabac_ctxt, - UWORD32 u4_ctxidx_offset) -{ - - UWORD8 u4_ctx_inc; - WORD8 a, b; - a = ((ps_cabac_ctxt->ps_left_ctxt_mb_info->u1_mb_type & CAB_SKIP_MASK) ? - 0 : 1); - b = ((ps_cabac_ctxt->ps_top_ctxt_mb_info->u1_mb_type & CAB_SKIP_MASK) ? - 0 : 1); - - u4_ctx_inc = a + b; - /* Encode the bin */ - ih264e_cabac_encode_bin(ps_cabac_ctxt, - (UWORD32) u1_mb_skip_flag, - ps_cabac_ctxt->au1_cabac_ctxt_table + u4_ctxidx_offset - + u4_ctx_inc); - -} - - -/* ! < Table 9-36 – Binarization for macroblock types in I slices in ITU_T_H264-201402 +/* ! < Table 9-36 : Binarization for macroblock types in I slices in ITU_T_H264 * Bits 0-7 : binarised value * Bits 8-15: length of binary sequence */ @@ -145,7 +114,6 @@ static const UWORD32 u4_mb_type_intra[26] = 0x074c, 0x074d, 0x074e, 0x074f, 0x0628, 0x0629, 0x062a, 0x062b, 0x0758, 0x0759, 0x075a, 0x075b, 0x075c, 0x075d, 0x075e, 0x075f, 0x0203 }; - /* CtxInc for mb types */ static const UWORD32 u4_mb_ctxinc[2][26] = { @@ -163,39 +131,97 @@ static const UWORD32 u4_mb_ctxinc[2][26] = 0x0012233, 0x0012233, 0x0012233, 0x00} }; +/* ! < Table 9-37 : Binarization for macroblock types in B slices in ITU_T_H264-201402 + * Bits 0-7 : binarised value + * Bits 8-15: length of binary sequence */ +static const UWORD32 u4_b_mb_type[27] = + { 0x0100, 0x0301, 0x0305, 0x0603, 0x0623, 0x0613, 0x0633, 0x060b, 0x062b, + 0x061b, 0x063b, 0x061f, 0x0707, 0x0747, 0x0727, 0x0767, 0x0717, 0x0757, + 0x0737, 0x0777, 0x070f, 0x074f, 0x063f }; + +/* CtxInc for mb types in B slices */ +static const UWORD32 ui_b_mb_type_ctx_inc[27] = + { 0x00, 0x0530, 0x0530, 0x0555430, 0x0555430, 0x0555430, 0x0555430, + 0x0555430, 0x0555430, 0x0555430, 0x0555430, 0x0555430, 0x05555430, + 0x05555430, 0x05555430, 0x05555430, 0x05555430, 0x05555430, 0x05555430, + 0x05555430, 0x05555430, 0x05555430, 0x0555430 }; + + +/*****************************************************************************/ +/* Function Definitions */ +/*****************************************************************************/ /** - ******************************************************************************* - * - * @brief - * Encodes mb_type for an intra MB. - * - * @param[in] u4_slice_type - * slice type - * - * @param[in] u4_intra_mb_type - * MB type (Table 7-11) - * - * @param[in] ps_cabac_ctxt - * Pointer to cabac context structure - * - ** @param[in] u4_ctxidx_offset - * ctxIdxOffset for mb_type context - * - * @returns - * - * @remarks - * None - * - ******************************************************************************* - */ +******************************************************************************* +* +* @brief +* Encodes mb_skip_flag using CABAC entropy coding mode. +* +* @param[in] u1_mb_skip_flag +* mb_skip_flag +* +* @param[in] ps_cabac_ctxt +* Pointer to cabac context structure +* +* @param[in] u4_ctxidx_offset +* ctxIdxOffset for mb_skip_flag context +* +* @returns none +* +* @remarks none +* +******************************************************************************* +*/ +static void ih264e_cabac_enc_mb_skip(UWORD8 u1_mb_skip_flag, + cabac_ctxt_t *ps_cabac_ctxt, + UWORD32 u4_ctxidx_offset) +{ + UWORD8 u4_ctx_inc; + WORD8 a, b; + + a = ((ps_cabac_ctxt->ps_left_ctxt_mb_info->u1_mb_type & CAB_SKIP_MASK) ? + 0 : 1); + b = ((ps_cabac_ctxt->ps_top_ctxt_mb_info->u1_mb_type & CAB_SKIP_MASK) ? + 0 : 1); + + u4_ctx_inc = a + b; + + /* Encode the bin */ + ih264e_cabac_encode_bin(ps_cabac_ctxt, + (UWORD32) u1_mb_skip_flag, + ps_cabac_ctxt->au1_cabac_ctxt_table + + u4_ctxidx_offset + u4_ctx_inc); +} +/** +******************************************************************************* +* +* @brief +* Encodes mb_type for an intra MB. +* +* @param[in] u4_slice_type +* slice type +* +* @param[in] u4_intra_mb_type +* MB type (Table 7-11) +* +* @param[in] ps_cabac_ctxt +* Pointer to cabac context structure +* +* @param[in] u4_ctxidx_offset +* ctxIdxOffset for mb_type context +* +* @returns none +* +* @remarks none +* +******************************************************************************* +*/ static void ih264e_cabac_enc_intra_mb_type(UWORD32 u4_slice_type, UWORD32 u4_intra_mb_type, cabac_ctxt_t *ps_cabac_ctxt, UWORD32 u4_ctx_idx_offset) { - encoding_envirnoment_t *ps_cab_enc_env = &(ps_cabac_ctxt->s_cab_enc_env); bin_ctxt_model *pu1_mb_bin_ctxt, *pu1_bin_ctxt; UWORD8 u1_bin; @@ -252,8 +278,7 @@ static void ih264e_cabac_enc_intra_mb_type(UWORD32 u4_slice_type, WORD8 i1_state = (*pu1_bin_ctxt) & 0x3F; u2_quant_code_int_range = ((u4_code_int_range >> 6) & 0x03); - u4_table_val = - gau4_ih264_cabac_table[i1_state][u2_quant_code_int_range]; + u4_table_val = gau4_ih264_cabac_table[i1_state][u2_quant_code_int_range]; u4_code_int_range_lps = u4_table_val & 0xFF; u4_code_int_range -= u4_code_int_range_lps; @@ -303,39 +328,36 @@ static void ih264e_cabac_enc_intra_mb_type(UWORD32 u4_slice_type, ih264e_cabac_put_byte(ps_cabac_ctxt); u4_code_int_range = ps_cab_enc_env->u4_code_int_range; u4_code_int_low = ps_cab_enc_env->u4_code_int_low; - } } } - - /** - ******************************************************************************* - * - * @brief - * Encodes prev_intra4x4_pred_mode_flag and - * rem_intra4x4_pred_mode using CABAC entropy coding mode - * - * @param[in] ps_cabac_ctxt - * Pointer to cabac context structure - * - * @param[in] pu1_intra_4x4_modes - * Pointer to array containing prev_intra4x4_pred_mode_flag and - * rem_intra4x4_pred_mode - * - * @returns - * - * @remarks - * None - * - ******************************************************************************* - */ +******************************************************************************* +* +* @brief +* Encodes prev_intra4x4_pred_mode_flag and rem_intra4x4_pred_mode using +* CABAC entropy coding mode +* +* @param[in] ps_cabac_ctxt +* Pointer to cabac context structure +* +* @param[in] pu1_intra_4x4_modes +* Pointer to array containing prev_intra4x4_pred_mode_flag and +* rem_intra4x4_pred_mode +* +* @returns none +* +* @remarks none +* +******************************************************************************* +*/ static void ih264e_cabac_enc_4x4mb_modes(cabac_ctxt_t *ps_cabac_ctxt, UWORD8 *pu1_intra_4x4_modes) { WORD32 i; WORD8 byte; + for (i = 0; i < 16; i += 2) { /* sub blk idx 1 */ @@ -380,31 +402,27 @@ static void ih264e_cabac_enc_4x4mb_modes(cabac_ctxt_t *ps_cabac_ctxt, } } - - /** - ******************************************************************************* - * - * @brief - * Encodes chroma intrapred mode for the MB. - * - * @param[in] u1_chroma_pred_mode - * Chroma intr prediction mode - * - * @param[in] ps_cabac_ctxt - * Pointer to cabac context structure - * - * @returns - * - * @remarks - * None - * - ******************************************************************************* - */ +******************************************************************************* +* +* @brief +* Encodes chroma intra pred mode for the MB. +* +* @param[in] u1_chroma_pred_mode +* Chroma intra prediction mode +* +* @param[in] ps_cabac_ctxt +* Pointer to cabac context structure +* +* @returns none +* +* @remarks none +* +******************************************************************************* +*/ static void ih264e_cabac_enc_chroma_predmode(UWORD8 u1_chroma_pred_mode, cabac_ctxt_t *ps_cabac_ctxt) { - WORD8 i1_temp; mb_info_ctxt_t *ps_curr_ctxt = ps_cabac_ctxt->ps_curr_ctxt_mb_info; mb_info_ctxt_t *ps_left_ctxt = ps_cabac_ctxt->ps_left_ctxt_mb_info; @@ -413,6 +431,7 @@ static void ih264e_cabac_enc_chroma_predmode(UWORD8 u1_chroma_pred_mode, WORD8 i1_bins_len = 1; UWORD32 u4_ctx_inc = 0; UWORD8 a, b; + a = ((ps_left_ctxt->u1_intrapred_chroma_mode != 0) ? 1 : 0); b = ((ps_top_ctxt->u1_intrapred_chroma_mode != 0) ? 1 : 0); @@ -447,29 +466,25 @@ static void ih264e_cabac_enc_chroma_predmode(UWORD8 u1_chroma_pred_mode, ps_cabac_ctxt->au1_cabac_ctxt_table + INTRA_CHROMA_PRED_MODE, ps_cabac_ctxt); - } - /** - ******************************************************************************* - * - * @brief - * Encodes CBP for the MB. - * - * @param[in] u1_cbp - * CBP for the MB - * - * @param[in] ps_cabac_ctxt - * Pointer to cabac context structure - * - * @returns - * - * @remarks - * None - * - ******************************************************************************* - */ +******************************************************************************* +* +* @brief Encodes CBP for the MB. +* +* @param[in] u1_cbp +* CBP for the MB +* +* @param[in] ps_cabac_ctxt +* Pointer to cabac context structure +* +* @returns none +* +* @remarks none +* +******************************************************************************* +*/ static void ih264e_cabac_enc_cbp(UWORD32 u4_cbp, cabac_ctxt_t *ps_cabac_ctxt) { mb_info_ctxt_t *ps_left_ctxt = ps_cabac_ctxt->ps_left_ctxt_mb_info; @@ -555,38 +570,36 @@ static void ih264e_cabac_enc_cbp(UWORD32 u4_cbp, cabac_ctxt_t *ps_cabac_ctxt) ps_cabac_ctxt); } - /** - ******************************************************************************* - * - * @brief - * Encodes mb_qp_delta for the MB. - * - * @param[in] i1_mb_qp_delta - * mb_qp_delta - * - * @param[in] ps_cabac_ctxt - * Pointer to cabac context structure - * - * @returns - * - * @remarks - * None - * - ******************************************************************************* - */ +******************************************************************************* +* +* @brief Encodes mb_qp_delta for the MB. +* +* @param[in] i1_mb_qp_delta +* mb_qp_delta +* +* @param[in] ps_cabac_ctxt +* Pointer to cabac context structure +* +* @returns none +* +* @remarks none +* +******************************************************************************* +*/ static void ih264e_cabac_enc_mb_qp_delta(WORD8 i1_mb_qp_delta, cabac_ctxt_t *ps_cabac_ctxt) { UWORD8 u1_code_num; UWORD8 u1_ctxt_inc; - UWORD32 u4_ctx_inc; UWORD32 u4_bins; WORD8 i1_bins_len; UWORD8 u1_ctx_inc, u1_bin; + /* Range of ps_mb_qp_delta_ctxt= -26 to +25 inclusive */ - ASSERT((i1_mb_qp_delta < 26) && (i1_mb_qp_delta > -27)); + ASSERT((i1_mb_qp_delta < 26) && (i1_mb_qp_delta > -27)); + /* if ps_mb_qp_delta_ctxt=0, then codeNum=0 */ u1_code_num = 0; if (i1_mb_qp_delta > 0) @@ -598,8 +611,8 @@ static void ih264e_cabac_enc_mb_qp_delta(WORD8 i1_mb_qp_delta, u4_bins = 0; i1_bins_len = 1; /* calculate ctxtInc, depending on neighbour availability */ - u1_ctxt_inc = (!(!(ps_cabac_ctxt->i1_prevps_mb_qp_delta_ctxt))); - ps_cabac_ctxt->i1_prevps_mb_qp_delta_ctxt = i1_mb_qp_delta; + u1_ctxt_inc = (!(!(ps_cabac_ctxt->i1_prev_mb_qp_delta_ctxt))); + ps_cabac_ctxt->i1_prev_mb_qp_delta_ctxt = i1_mb_qp_delta; if (u1_code_num == 0) { @@ -692,42 +705,38 @@ static void ih264e_cabac_enc_mb_qp_delta(WORD8 i1_mb_qp_delta, } } - - - /** - ******************************************************************************* - * @brief - * Encodes 4residual_block_cabac as defined in 7.3.5.3.3. - * - * @param[in] pi2_res_block - * pointer to the array of residues - * - * @param[in] u1_nnz - * Number of non zero coeffs in the block - * - * @param[in] u1_max_num_coeffs - * Max number of coeffs that can be there in the block - * - * @param[in] u2_sig_coeff_map - * Significant coeff map - * - * @param[in] u4_ctx_cat_offset - * ctxIdxOffset for absolute value contexts - * - * @param[in] pu1_ctxt_sig_coeff - * Pointer to residual state variables - * - * @param[in] ps_cabac_ctxt - * Pointer to cabac context structure - * - * @returns - * - * @remarks - * None - * - ******************************************************************************* - */ +******************************************************************************* +* @brief +* Encodes 4x4 residual_block_cabac as defined in 7.3.5.3.3. +* +* @param[in] pi2_res_block +* pointer to the array of residues +* +* @param[in] u1_nnz +* Number of non zero coeffs in the block +* +* @param[in] u1_max_num_coeffs +* Max number of coeffs that can be there in the block +* +* @param[in] u2_sig_coeff_map +* Significant coeff map +* +* @param[in] u4_ctx_cat_offset +* ctxIdxOffset for absolute value contexts +* +* @param[in] pu1_ctxt_sig_coeff +* Pointer to residual state variables +* +* @param[in] ps_cabac_ctxt +* Pointer to cabac context structure +* +* @returns none +* +* @remarks none +* +******************************************************************************* +*/ static void ih264e_cabac_write_coeff4x4(WORD16 *pi2_res_block, UWORD8 u1_nnz, UWORD8 u1_max_num_coeffs, UWORD16 u2_sig_coeff_map, @@ -735,7 +744,6 @@ static void ih264e_cabac_write_coeff4x4(WORD16 *pi2_res_block, UWORD8 u1_nnz, bin_ctxt_model *pu1_ctxt_sig_coeff, cabac_ctxt_t *ps_cabac_ctxt) { - WORD8 i; WORD16 *pi16_coeffs; UWORD32 u4_sig_coeff, u4_bins; @@ -743,152 +751,151 @@ static void ih264e_cabac_write_coeff4x4(WORD16 *pi2_res_block, UWORD8 u1_nnz, UWORD8 u1_last_sig_coef_index = (31 - CLZ(u2_sig_coeff_map)); /* Always put Coded Block Flag as 1 */ + pi16_coeffs = pi2_res_block; + { + bin_ctxt_model *pu1_bin_ctxt; + UWORD8 u1_bin, uc_last; + + i = 0; + pu1_bin_ctxt = pu1_ctxt_sig_coeff; + u4_sig_coeff = 0; + u1_bin = 1; + if ((u1_last_sig_coef_index)) + { + u1_bin = !!(u2_sig_coeff_map & 01); + } + uc_last = 1; - pi16_coeffs = pi2_res_block; + do { - bin_ctxt_model *pu1_bin_ctxt; - UWORD8 u1_bin, uc_last; - - i = 0; - pu1_bin_ctxt = pu1_ctxt_sig_coeff; - u4_sig_coeff = 0; - u1_bin = 1; - if ((u1_last_sig_coef_index)) + /* Encode Decision */ + ih264e_cabac_encode_bin(ps_cabac_ctxt, u1_bin, pu1_bin_ctxt); + + if (u1_bin & uc_last) { - u1_bin = !!(u2_sig_coeff_map & 01); + u4_sig_coeff = (u4_sig_coeff | (1 << i)); + pu1_bin_ctxt = pu1_ctxt_sig_coeff + i + + LAST_SIGNIFICANT_COEFF_FLAG_FRAME + - SIGNIFICANT_COEFF_FLAG_FRAME; + u1_bin = (i == u1_last_sig_coef_index); + uc_last = 0; } - uc_last = 1; - - do + else { - /* Encode Decision */ - ih264e_cabac_encode_bin(ps_cabac_ctxt, u1_bin, pu1_bin_ctxt); - - if (u1_bin & uc_last) + i = i + 1; + pu1_bin_ctxt = pu1_ctxt_sig_coeff + i; + u1_bin = (i == u1_last_sig_coef_index); + uc_last = 1; + if ((i != u1_last_sig_coef_index)) { - u4_sig_coeff = (u4_sig_coeff | (1 << i)); - pu1_bin_ctxt = pu1_ctxt_sig_coeff + i - + LAST_SIGNIFICANT_COEFF_FLAG_FRAME - - SIGNIFICANT_COEFF_FLAG_FRAME; - u1_bin = (i == u1_last_sig_coef_index); - uc_last = 0; + u1_bin = !!((u2_sig_coeff_map >> i) & 01); } - else - { - i = i + 1; - pu1_bin_ctxt = pu1_ctxt_sig_coeff + i; - u1_bin = (i == u1_last_sig_coef_index); - uc_last = 1; - if ((i != u1_last_sig_coef_index)) - { - u1_bin = !!((u2_sig_coeff_map >> i) & 01); - } - } - }while (!((i > u1_last_sig_coef_index) - || (i > (u1_max_num_coeffs - 1)))); - } + } + } while (!((i > u1_last_sig_coef_index) || (i > (u1_max_num_coeffs - 1)))); + } - /* Encode coeff_abs_level_minus1 and coeff_sign_flag */ + /* Encode coeff_abs_level_minus1 and coeff_sign_flag */ + { + UWORD8 u1_sign; + UWORD16 u2_abs_level; + UWORD8 u1_abs_level_equal1 = 1, u1_abs_level_gt1 = 0; + UWORD8 u1_ctx_inc; + UWORD8 u1_coff; + WORD16 i2_sufs; + WORD8 i1_bins_len; + + i = u1_last_sig_coef_index; + pi16_coeffs = pi2_res_block + u1_nnz - 1; + do { - UWORD8 u1_sign; - UWORD16 u2_abs_level; - UWORD8 u1_abs_level_equal1 = 1, u1_abs_level_gt1 = 0; - UWORD8 u1_ctx_inc; - UWORD8 u1_coff; - WORD16 i2_sufs; - WORD8 i1_bins_len; - i = u1_last_sig_coef_index; - pi16_coeffs = pi2_res_block + u1_nnz - 1; - do { + u4_sig_coeff = u4_sig_coeff & ((1 << i) - 1); + u4_bins = 0; + u4_ctx_inc = 0; + i1_bins_len = 1; + /* Encode the AbsLevelMinus1 */ + u2_abs_level = ABS(*(pi16_coeffs)) - 1; + /* CtxInc for bin0 */ + u4_ctx_inc = MIN(u1_abs_level_equal1, 4); + /* CtxInc for remaining */ + u1_ctx_inc = 5 + MIN(u1_abs_level_gt1, 4); + u4_ctx_inc = u4_ctx_inc + (u1_ctx_inc << 4); + if (u2_abs_level) { - u4_sig_coeff = u4_sig_coeff & ((1 << i) - 1); - u4_bins = 0; - u4_ctx_inc = 0; - i1_bins_len = 1; - /* Encode the AbsLevelMinus1 */ - u2_abs_level = ABS(*(pi16_coeffs)) - 1; - /* CtxInc for bin0 */ - u4_ctx_inc = MIN(u1_abs_level_equal1, 4); - /* CtxInc for remaining */ - u1_ctx_inc = 5 + MIN(u1_abs_level_gt1, 4); - u4_ctx_inc = u4_ctx_inc + (u1_ctx_inc << 4); - if (u2_abs_level) - { - u1_abs_level_gt1++; - u1_abs_level_equal1 = 0; - } - if (!u1_abs_level_gt1) - u1_abs_level_equal1++; + u1_abs_level_gt1++; + u1_abs_level_equal1 = 0; + } + if (!u1_abs_level_gt1) + u1_abs_level_equal1++; - u1_coff = 14; - if (u2_abs_level >= u1_coff) - { - /* Prefix TU i.e string of 14 1's */ - u4_bins = 0x3fff; - i1_bins_len = 14; - ih264e_encode_decision_bins(u4_bins, i1_bins_len, - u4_ctx_inc, 1, ps_cabac_ctxt->au1_cabac_ctxt_table + u1_coff = 14; + if (u2_abs_level >= u1_coff) + { + /* Prefix TU i.e string of 14 1's */ + u4_bins = 0x3fff; + i1_bins_len = 14; + ih264e_encode_decision_bins( + u4_bins, + i1_bins_len, + u4_ctx_inc, + 1, + ps_cabac_ctxt->au1_cabac_ctxt_table + u4_ctx_cat_offset, - ps_cabac_ctxt); - - /* Suffix, uses EncodeBypass */ - i2_sufs = u2_abs_level - u1_coff; + ps_cabac_ctxt); - u4_bins = ih264e_cabac_UEGk0_binarization(i2_sufs, - &i1_bins_len); + /* Suffix, uses EncodeBypass */ + i2_sufs = u2_abs_level - u1_coff; - ih264e_cabac_encode_bypass_bins(ps_cabac_ctxt, u4_bins, - i1_bins_len); + u4_bins = ih264e_cabac_UEGk0_binarization(i2_sufs, + &i1_bins_len); - } - else - { - /* Prefix only */ - u4_bins = (1 << u2_abs_level) - 1; - i1_bins_len = u2_abs_level + 1; - /* Encode Terminating bit */ - ih264e_encode_decision_bins(u4_bins, i1_bins_len, - u4_ctx_inc, 1, ps_cabac_ctxt->au1_cabac_ctxt_table + ih264e_cabac_encode_bypass_bins(ps_cabac_ctxt, u4_bins, + i1_bins_len); + } + else + { + /* Prefix only */ + u4_bins = (1 << u2_abs_level) - 1; + i1_bins_len = u2_abs_level + 1; + /* Encode Terminating bit */ + ih264e_encode_decision_bins( + u4_bins, + i1_bins_len, + u4_ctx_inc, + 1, + ps_cabac_ctxt->au1_cabac_ctxt_table + u4_ctx_cat_offset, - ps_cabac_ctxt); - } + ps_cabac_ctxt); } - /* encode coeff_sign_flag[i] */ - u1_sign = ((*pi16_coeffs) < 0) ? 1 : 0; - ih264e_cabac_encode_bypass_bin(ps_cabac_ctxt, u1_sign); - i = CLZ(u4_sig_coeff); - i = 31 - i; - pi16_coeffs--; - }while (u4_sig_coeff); - } - + } + /* encode coeff_sign_flag[i] */ + u1_sign = ((*pi16_coeffs) < 0) ? 1 : 0; + ih264e_cabac_encode_bypass_bin(ps_cabac_ctxt, u1_sign); + i = CLZ(u4_sig_coeff); + i = 31 - i; + pi16_coeffs--; + } while (u4_sig_coeff); + } } - /** - ******************************************************************************* - * @brief - * Write DC coeffs for intra predicted luma block - * - * @param[in] ps_ent_ctxt - * Pointer to entropy context structure - * - * @returns - * - * @remarks - * None - * - ******************************************************************************* - */ +******************************************************************************* +* @brief +* Write DC coeffs for intra predicted luma block +* +* @param[in] ps_ent_ctxt +* Pointer to entropy context structure +* +* @returns none +* +* @remarks none +* +******************************************************************************* +*/ static void ih264e_cabac_encode_residue_luma_dc(entropy_ctxt_t *ps_ent_ctxt) { - - /* CABAC context */ cabac_ctxt_t *ps_cabac_ctxt = ps_ent_ctxt->ps_cabac; tu_sblk_coeff_data_t *ps_mb_coeff_data; - - /* packed residue */ void *pv_mb_coeff_data = ps_ent_ctxt->pv_mb_coeff_data; UWORD16 u2_sig_coeff_map; WORD16 *pi2_res_block; @@ -941,34 +948,28 @@ static void ih264e_cabac_encode_residue_luma_dc(entropy_ctxt_t *ps_ent_ctxt) ps_ent_ctxt->pv_mb_coeff_data = pv_mb_coeff_data; } - - - /** - ******************************************************************************* - * @brief - * Write chroma residues to the bitstream - * - * @param[in] ps_ent_ctxt - * Pointer to entropy context structure - * - * @param[in] u1_chroma_cbp - * coded block pattern, chroma - * - * @returns - * - * @remarks - * None - * - ******************************************************************************* - */ +******************************************************************************* +* @brief +* Write chroma residues to the bitstream +* +* @param[in] ps_ent_ctxt +* Pointer to entropy context structure +* +* @param[in] u1_chroma_cbp +* coded block pattern, chroma +* +* @returns none +* +* @remarks none +* +******************************************************************************* +*/ static void ih264e_cabac_write_chroma_residue(entropy_ctxt_t *ps_ent_ctxt, UWORD8 u1_chroma_cbp) { - /* CABAC context */ cabac_ctxt_t *ps_cabac_ctxt = ps_ent_ctxt->ps_cabac; tu_sblk_coeff_data_t *ps_mb_coeff_data; - /* packed residue */ void *pv_mb_coeff_data = ps_ent_ctxt->pv_mb_coeff_data; UWORD16 u2_sig_coeff_map; UWORD8 u1_nnz; @@ -1114,38 +1115,31 @@ static void ih264e_cabac_write_chroma_residue(entropy_ctxt_t *ps_ent_ctxt, ps_ent_ctxt->pv_mb_coeff_data = pv_mb_coeff_data; } - - - /** - ******************************************************************************* - * @brief - * Encodes Residues for the MB as defined in 7.3.5.3 - * - * @param[in] ps_ent_ctxt - * Pointer to entropy context structure - * - * @param[in] u1_cbp - * coded block pattern - * - * @param[in] u1_ctx_cat - * Context category, LUMA_AC_CTXCAT or LUMA_4x4_CTXCAT - * - * @returns - * - * @remarks - * None - * - ******************************************************************************* - */ +******************************************************************************* +* @brief +* Encodes Residues for the MB as defined in 7.3.5.3 +* +* @param[in] ps_ent_ctxt +* Pointer to entropy context structure +* +* @param[in] u1_cbp +* coded block pattern +* +* @param[in] u1_ctx_cat +* Context category, LUMA_AC_CTXCAT or LUMA_4x4_CTXCAT +* +* @returns none +* +* @remarks none +* +******************************************************************************* +*/ static void ih264e_cabac_encode_residue(entropy_ctxt_t *ps_ent_ctxt, UWORD32 u4_cbp, UWORD8 u1_ctx_cat) { - /* CABAC context */ cabac_ctxt_t *ps_cabac_ctxt = ps_ent_ctxt->ps_cabac; - tu_sblk_coeff_data_t *ps_mb_coeff_data; - /* packed residue */ void *pv_mb_coeff_data = ps_ent_ctxt->pv_mb_coeff_data; UWORD16 u2_sig_coeff_map; UWORD8 u1_nnz; @@ -1154,6 +1148,7 @@ static void ih264e_cabac_encode_residue(entropy_ctxt_t *ps_ent_ctxt, UWORD8 u1_left_ac_csbp; UWORD8 u1_top_ac_csbp; UWORD32 u4_ctx_idx_offset_sig_coef, u4_ctx_idx_offset_abs_lvl; + ps_curr_ctxt = ps_cabac_ctxt->ps_curr_ctxt_mb_info; ps_top_ctxt = ps_cabac_ctxt->ps_top_ctxt_mb_info; u1_left_ac_csbp = ps_cabac_ctxt->pu1_left_y_ac_csbp[0]; @@ -1193,10 +1188,10 @@ static void ih264e_cabac_encode_residue(entropy_ctxt_t *ps_ent_ctxt, if (!((u4_cbp >> u1_b3b2) & 0x1)) { - /* ---------------------------------------------------------- */ + /************************************************************/ /* The current block is not coded so skip all the sub block */ /* and set the pointer of scan level, csbp accrodingly */ - /* ---------------------------------------------------------- */ + /************************************************************/ CLEARBIT(u1_top_ac_csbp, u1_b2b0); CLEARBIT(u1_top_ac_csbp, (u1_b2b0 + 1)); CLEARBIT(u1_left_ac_csbp, u1_b3b1); @@ -1267,7 +1262,6 @@ static void ih264e_cabac_encode_residue(entropy_ctxt_t *ps_ent_ctxt, } /* Write chroma residue */ - ps_ent_ctxt->pv_mb_coeff_data = pv_mb_coeff_data; { UWORD8 u1_cbp_chroma; @@ -1287,34 +1281,32 @@ static void ih264e_cabac_encode_residue(entropy_ctxt_t *ps_ent_ctxt, } /** - ******************************************************************************* - * @brief - * Encodes a Motion vector (9.3.3.1.1.7 ) - * - * @param[in] u1_mvd - * Motion vector to be encoded - * - * @param[in] u4_ctx_idx_offset - * * ctxIdxOffset for MV_X or MV_Ycontext - * - * @param[in] ui2_abs_mvd - * sum of absolute value of corresponding neighboring motion vectors - * - * @param[in] ps_cabac_ctxt - * Pointer to cabac context structure - * - * @returns - * - * @remarks - * None - * - ******************************************************************************* - */ +******************************************************************************* +* @brief +* Encodes a Motion vector (Sec. 9.3.3.1.1.7 ITU T. H264) +* +* @param[in] u1_mvd +* Motion vector to be encoded +* +* @param[in] u4_ctx_idx_offset +* ctxIdxOffset for MV_X or MV_Ycontext +* +* @param[in] ui2_abs_mvd +* sum of absolute value of corresponding neighboring motion vectors +* +* @param[in] ps_cabac_ctxt +* Pointer to cabac context structure +* +* @returns none +* +* @remarks none +* +******************************************************************************* +*/ static void ih264e_cabac_enc_ctx_mvd(WORD16 u1_mvd, UWORD32 u4_ctx_idx_offset, UWORD16 ui2_abs_mvd, cabac_ctxt_t *ps_cabac_ctxt) { - UWORD8 u1_bin, u1_ctxt_inc; WORD8 k = 3, u1_coff = 9; WORD16 i2_abs_mvd, i2_sufs; @@ -1322,16 +1314,6 @@ static void ih264e_cabac_enc_ctx_mvd(WORD16 u1_mvd, UWORD32 u4_ctx_idx_offset, UWORD32 u4_bins; WORD8 i1_bins_len; - /* if mvd < u1_coff - only Prefix - else - Prefix + Suffix - - encode sign bit - - Prefix TU encoding Cmax =u1_coff and Suffix 3rd order Exp-Golomb - */ - if (ui2_abs_mvd < 3) u4_ctx_inc = 0; else if (ui2_abs_mvd > 32) @@ -1436,34 +1418,31 @@ static void ih264e_cabac_enc_ctx_mvd(WORD16 u1_mvd, UWORD32 u4_ctx_idx_offset, } /** - ******************************************************************************* - * @brief - * Encodes all motion vectors for a P16x16 MB - * - * @param[in] ps_cabac_ctxt - * Pointer to cabac context structure - * - * @param[in] pi2_mv_ptr - * Pointer to array of motion vectors - * - * @returns - * - * @remarks - * None - * - ******************************************************************************* - */ +******************************************************************************* +* @brief +* Encodes all motion vectors for a P16x16 MB +* +* @param[in] ps_cabac_ctxt +* Pointer to cabac context structure +* +* @param[in] pi2_mv_ptr +* Pointer to array of motion vectors +* +* @returns none +* +* @remarks none +* +******************************************************************************* +*/ static void ih264e_cabac_enc_mvds_p16x16(cabac_ctxt_t *ps_cabac_ctxt, WORD16 *pi2_mv_ptr) { - - /* Encode the differential component of the motion vectors */ - { UWORD8 u1_abs_mvd_x, u1_abs_mvd_y; UWORD8 *pu1_top_mv_ctxt, *pu1_lft_mv_ctxt; WORD16 u2_mv; + u1_abs_mvd_x = 0; u1_abs_mvd_y = 0; pu1_top_mv_ctxt = ps_cabac_ctxt->ps_curr_ctxt_mb_info->u1_mv[0]; @@ -1498,36 +1477,34 @@ static void ih264e_cabac_enc_mvds_p16x16(cabac_ctxt_t *ps_cabac_ctxt, } } - /** - ******************************************************************************* - * @brief - * Encodes all motion vectors for a B MB (Assues that mbype is B_L0_16x16, B_L1_16x16 or B_Bi_16x16 - * - * @param[in] ps_cabac_ctxt - * Pointer to cabac context structure - * - * @param[in] pi2_mv_ptr - * Pointer to array of motion vectors - * - * @returns - * - * @remarks - * None - * - ******************************************************************************* - */ +******************************************************************************* +* @brief +* Encodes all motion vectors for a B MB (Assumes that mbype is B_L0_16x16, +* B_L1_16x16 or B_Bi_16x16 +* +* @param[in] ps_cabac_ctxt +* Pointer to cabac context structure +* +* @param[in] pi2_mv_ptr +* Pointer to array of motion vectors +* +* @returns none +* +* @remarks none +* +******************************************************************************* +*/ static void ih264e_cabac_enc_mvds_b16x16(cabac_ctxt_t *ps_cabac_ctxt, WORD16 *pi2_mv_ptr, WORD32 i4_mb_part_pred_mode ) { - /* Encode the differential component of the motion vectors */ - { UWORD8 u1_abs_mvd_x, u1_abs_mvd_y; UWORD8 *pu1_top_mv_ctxt, *pu1_lft_mv_ctxt; WORD16 u2_mv; + u1_abs_mvd_x = 0; u1_abs_mvd_y = 0; pu1_top_mv_ctxt = ps_cabac_ctxt->ps_curr_ctxt_mb_info->u1_mv[0]; @@ -1595,35 +1572,30 @@ static void ih264e_cabac_enc_mvds_b16x16(cabac_ctxt_t *ps_cabac_ctxt, } } - - /** - ******************************************************************************* - * - * @brief - * This function generates CABAC coded bit stream for an Intra Slice. - * - * @description - * The mb syntax layer for intra slices constitutes luma mb mode, mb qp delta, coded block pattern, chroma mb mode and - * luma/chroma residue. These syntax elements are written as directed by table - * 7.3.5 of h264 specification. - * - * @param[in] ps_ent_ctxt - * pointer to entropy context - * - * @returns error code - * - * @remarks none - * - ******************************************************************************* - */ +******************************************************************************* +* +* @brief +* This function generates CABAC coded bit stream for an Intra Slice. +* +* @description +* The mb syntax layer for intra slices constitutes luma mb mode, mb qp delta, +* coded block pattern, chroma mb mode and luma/chroma residue. These syntax +* elements are written as directed by table 7.3.5 of h264 specification. +* +* @param[in] ps_ent_ctxt +* pointer to entropy context +* +* @returns error code +* +* @remarks none +* +******************************************************************************* +*/ IH264E_ERROR_T ih264e_write_islice_mb_cabac(entropy_ctxt_t *ps_ent_ctxt) { - /* bit stream ptr */ bitstrm_t *ps_bitstream = ps_ent_ctxt->ps_bitstrm; - /* CABAC context */ cabac_ctxt_t *ps_cabac_ctxt = ps_ent_ctxt->ps_cabac; - /* packed header data */ UWORD8 *pu1_byte = ps_ent_ctxt->pv_mb_header_data; mb_hdr_common_t *ps_mb_hdr = (mb_hdr_common_t *)ps_ent_ctxt->pv_mb_header_data; mb_info_ctxt_t *ps_curr_ctxt; @@ -1721,6 +1693,7 @@ IH264E_ERROR_T ih264e_write_islice_mb_cabac(entropy_ctxt_t *ps_ent_ctxt) *(ps_cabac_ctxt->pu1_left_uv_ac_csbp) = 0; *(ps_cabac_ctxt->pu1_left_y_ac_csbp) = 0; *(ps_cabac_ctxt->pu1_left_yuv_dc_csbp) = 0; + ps_cabac_ctxt->i1_prev_mb_qp_delta_ctxt = 0; /* Ending bitstream offset for header in bits */ bitstream_end_offset = GET_NUM_BITS(ps_bitstream); ps_ent_ctxt->u4_header_bits[0] += bitstream_end_offset @@ -1747,34 +1720,30 @@ IH264E_ERROR_T ih264e_write_islice_mb_cabac(entropy_ctxt_t *ps_ent_ctxt) } /** - ******************************************************************************* - * - * @brief - * This function generates CABAC coded bit stream for Inter slices - * - * @description - * The mb syntax layer for inter slices constitutes luma mb mode, mb qp delta, coded block pattern, chroma mb mode and - * luma/chroma residue. These syntax elements are written as directed by table - * 7.3.5 of h264 specification - * - * @param[in] ps_ent_ctxt - * pointer to entropy context - * - * @returns error code - * - * @remarks none - * - ******************************************************************************* - */ +******************************************************************************* +* +* @brief +* This function generates CABAC coded bit stream for Inter slices +* +* @description +* The mb syntax layer for inter slices constitutes luma mb mode, mb qp delta, +* coded block pattern, chroma mb mode and luma/chroma residue. These syntax +* elements are written as directed by table 7.3.5 of h264 specification +* +* @param[in] ps_ent_ctxt +* pointer to entropy context +* +* @returns error code +* +* @remarks none +* +******************************************************************************* +*/ IH264E_ERROR_T ih264e_write_pslice_mb_cabac(entropy_ctxt_t *ps_ent_ctxt) { - /* bit stream ptr */ bitstrm_t *ps_bitstream = ps_ent_ctxt->ps_bitstrm; - /* CABAC context */ cabac_ctxt_t *ps_cabac_ctxt = ps_ent_ctxt->ps_cabac; - mb_info_ctxt_t *ps_curr_ctxt; - WORD32 bitstream_start_offset, bitstream_end_offset; WORD32 mb_tpm, mb_type, cbp, chroma_intra_mode, luma_intra_mode; WORD8 mb_qp_delta; @@ -1887,6 +1856,7 @@ IH264E_ERROR_T ih264e_write_pslice_mb_cabac(entropy_ctxt_t *ps_ent_ctxt) *(ps_cabac_ctxt->pu1_left_uv_ac_csbp) = 0; *(ps_cabac_ctxt->pu1_left_y_ac_csbp) = 0; *(ps_cabac_ctxt->pu1_left_yuv_dc_csbp) = 0; + ps_cabac_ctxt->i1_prev_mb_qp_delta_ctxt = 0; /* Ending bitstream offset for header in bits */ bitstream_end_offset = GET_NUM_BITS(ps_bitstream); ps_ent_ctxt->u4_header_bits[0] += bitstream_end_offset @@ -2002,6 +1972,7 @@ IH264E_ERROR_T ih264e_write_pslice_mb_cabac(entropy_ctxt_t *ps_ent_ctxt) *(ps_cabac_ctxt->pu1_left_uv_ac_csbp) = 0; *(ps_cabac_ctxt->pu1_left_y_ac_csbp) = 0; *(ps_cabac_ctxt->pu1_left_yuv_dc_csbp) = 0; + ps_cabac_ctxt->i1_prev_mb_qp_delta_ctxt = 0; } ps_curr_ctxt->u1_intrapred_chroma_mode = 0; ps_curr_ctxt->u1_cbp = cbp; @@ -2011,61 +1982,31 @@ IH264E_ERROR_T ih264e_write_pslice_mb_cabac(entropy_ctxt_t *ps_ent_ctxt) } } - -/* ! < Table 9-37 – Binarization for macroblock types in B slices in ITU_T_H264-201402 - * Bits 0-7 : binarised value - * Bits 8-15: length of binary sequence */ - - -static const UWORD32 u4_b_mb_type[27] = { 0x0100, 0x0301, 0x0305, 0x0603, - 0x0623, 0x0613, 0x0633, 0x060b, - 0x062b, 0x061b, 0x063b, 0x061f, - 0x0707, 0x0747, 0x0727, 0x0767, - 0x0717, 0x0757, 0x0737, 0x0777, - 0x070f, 0x074f, 0x063f }; -/* CtxInc for mb types in B slices */ -static const UWORD32 ui_b_mb_type_ctx_inc[27] = { 0x00, 0x0530, 0x0530, - 0x0555430, 0x0555430, - 0x0555430, 0x0555430, - 0x0555430, 0x0555430, - 0x0555430, 0x0555430, - 0x0555430, 0x05555430, - 0x05555430, 0x05555430, - 0x05555430, 0x05555430, - 0x05555430, 0x05555430, - 0x05555430, 0x05555430, - 0x05555430, 0x0555430 }; - /** - ******************************************************************************* - * - * @brief - * This function generates CABAC coded bit stream for B slices - * - * @description - * The mb syntax layer for inter slices constitutes luma mb mode, - * mb qp delta, coded block pattern, chroma mb mode and - * luma/chroma residue. These syntax elements are written as directed by table - * 7.3.5 of h264 specification - * - * @param[in] ps_ent_ctxt - * pointer to entropy context - * - * @returns error code - * - * @remarks none - * - ******************************************************************************* - */ +******************************************************************************* +* +* @brief +* This function generates CABAC coded bit stream for B slices +* +* @description +* The mb syntax layer for inter slices constitutes luma mb mode, mb qp delta, +* coded block pattern, chroma mb mode and luma/chroma residue. These syntax +* elements are written as directed by table 7.3.5 of h264 specification +* +* @param[in] ps_ent_ctxt +* pointer to entropy context +* +* @returns error code +* +* @remarks none +* +******************************************************************************* +*/ IH264E_ERROR_T ih264e_write_bslice_mb_cabac(entropy_ctxt_t *ps_ent_ctxt) { - /* bit stream ptr */ bitstrm_t *ps_bitstream = ps_ent_ctxt->ps_bitstrm; - /* CABAC context */ cabac_ctxt_t *ps_cabac_ctxt = ps_ent_ctxt->ps_cabac; - mb_info_ctxt_t *ps_curr_ctxt; - WORD32 bitstream_start_offset, bitstream_end_offset; WORD32 mb_tpm, mb_type, cbp, chroma_intra_mode, luma_intra_mode; WORD8 mb_qp_delta; @@ -2195,6 +2136,7 @@ IH264E_ERROR_T ih264e_write_bslice_mb_cabac(entropy_ctxt_t *ps_ent_ctxt) *(ps_cabac_ctxt->pu1_left_uv_ac_csbp) = 0; *(ps_cabac_ctxt->pu1_left_y_ac_csbp) = 0; *(ps_cabac_ctxt->pu1_left_yuv_dc_csbp) = 0; + ps_cabac_ctxt->i1_prev_mb_qp_delta_ctxt = 0; /* Ending bitstream offset for header in bits */ bitstream_end_offset = GET_NUM_BITS(ps_bitstream); ps_ent_ctxt->u4_header_bits[0] += bitstream_end_offset @@ -2220,7 +2162,6 @@ IH264E_ERROR_T ih264e_write_bslice_mb_cabac(entropy_ctxt_t *ps_ent_ctxt) return IH264E_SUCCESS; } - else /* Inter MB */ { /* Starting bitstream offset for header in bits */ @@ -2280,7 +2221,6 @@ IH264E_ERROR_T ih264e_write_bslice_mb_cabac(entropy_ctxt_t *ps_ent_ctxt) pu1_byte += sizeof(mb_hdr_bdirect_t); } - else if (mb_type == BSKIP)/* MB = BSKIP */ { ih264e_cabac_enc_mb_skip(1, ps_cabac_ctxt, MB_SKIP_FLAG_B_SLICE); @@ -2299,7 +2239,6 @@ IH264E_ERROR_T ih264e_write_bslice_mb_cabac(entropy_ctxt_t *ps_ent_ctxt) pu1_byte += sizeof(mb_hdr_bskip_t); } - else /* mbype is B_L0_16x16, B_L1_16x16 or B_Bi_16x16 */ { mb_hdr_b16x16_t *ps_mb_hdr_b16x16 = (mb_hdr_b16x16_t *)ps_ent_ctxt->pv_mb_header_data; @@ -2390,6 +2329,7 @@ IH264E_ERROR_T ih264e_write_bslice_mb_cabac(entropy_ctxt_t *ps_ent_ctxt) *(ps_cabac_ctxt->pu1_left_uv_ac_csbp) = 0; *(ps_cabac_ctxt->pu1_left_y_ac_csbp) = 0; *(ps_cabac_ctxt->pu1_left_yuv_dc_csbp) = 0; + ps_cabac_ctxt->i1_prev_mb_qp_delta_ctxt = 0; } ps_curr_ctxt->u1_intrapred_chroma_mode = 0; ps_curr_ctxt->u1_cbp = cbp; |