| /****************************************************************************** |
| * |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at: |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| ***************************************************************************** |
| * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore |
| */ |
| |
| /*! |
| ************************************************************************** |
| * \file ih264d_parse_pslice.c |
| * |
| * \brief |
| * Contains routines that decode a I slice type |
| * |
| * Detailed_description |
| * |
| * \date |
| * 07/07/2003 |
| * |
| * \author NS |
| ************************************************************************** |
| */ |
| |
| #include <string.h> |
| #include "ih264d_bitstrm.h" |
| #include "ih264d_defs.h" |
| #include "ih264d_debug.h" |
| #include "ih264d_tables.h" |
| #include "ih264d_structs.h" |
| #include "ih264d_defs.h" |
| #include "ih264d_parse_cavlc.h" |
| #include "ih264d_mb_utils.h" |
| #include "ih264d_parse_slice.h" |
| #include "ih264d_mvpred.h" |
| #include "ih264d_parse_islice.h" |
| #include "ih264d_process_intra_mb.h" |
| #include "ih264d_inter_pred.h" |
| #include "ih264d_process_pslice.h" |
| #include "ih264d_deblocking.h" |
| #include "ih264d_cabac.h" |
| #include "ih264d_parse_mb_header.h" |
| #include "ih264d_error_handler.h" |
| #include "ih264d_defs.h" |
| #include "ih264d_format_conv.h" |
| #include "ih264d_quant_scaling.h" |
| #include "ih264d_thread_parse_decode.h" |
| #include "ih264d_thread_compute_bs.h" |
| #include "ih264d_process_bslice.h" |
| #include "ithread.h" |
| #include "ih264d_utils.h" |
| #include "ih264d_format_conv.h" |
| |
| void ih264d_init_cabac_contexts(UWORD8 u1_slice_type, dec_struct_t * ps_dec); |
| void ih264d_deblock_mb_level(dec_struct_t *ps_dec, |
| dec_mb_info_t *ps_cur_mb_info, |
| UWORD32 nmb_index); |
| |
| /*! |
| ************************************************************************** |
| * \if Function name : ih264d_parse_pmb_cavlc \endif |
| * |
| * \brief |
| * This function parses CAVLC syntax of a P MB. |
| * |
| * \return |
| * 0 on Success and Error code otherwise |
| ************************************************************************** |
| */ |
| WORD32 ih264d_parse_pmb_cavlc(dec_struct_t * ps_dec, |
| dec_mb_info_t * ps_cur_mb_info, |
| UWORD8 u1_mb_num, |
| UWORD8 u1_num_mbsNby2) |
| { |
| UWORD32 u1_num_mb_part; |
| UWORD32 uc_sub_mb; |
| dec_bit_stream_t * const ps_bitstrm = ps_dec->ps_bitstrm; |
| UWORD32 * const pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; |
| UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst; |
| |
| parse_pmbarams_t * ps_parse_mb_data = ps_dec->ps_parse_mb_data |
| + u1_num_mbsNby2; |
| WORD8 * pi1_ref_idx = ps_parse_mb_data->i1_ref_idx[0]; |
| const UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag; |
| const UWORD8 * pu1_num_mb_part = (const UWORD8 *)gau1_ih264d_num_mb_part; |
| UWORD8 * pu1_col_info = ps_parse_mb_data->u1_col_info; |
| |
| UWORD32 u1_mb_type = ps_cur_mb_info->u1_mb_type; |
| UWORD32 u4_sum_mb_mode_pack = 0; |
| WORD32 ret; |
| |
| UWORD8 u1_no_submb_part_size_lt8x8_flag = 1; |
| ps_cur_mb_info->u1_tran_form8x8 = 0; |
| ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0; |
| |
| ps_cur_mb_info->u1_yuv_dc_block_flag = 0; |
| |
| ps_cur_mb_info->u1_mb_mc_mode = u1_mb_type; |
| uc_sub_mb = ((u1_mb_type == PRED_8x8) | (u1_mb_type == PRED_8x8R0)); |
| |
| /* Reading the subMB type */ |
| if(uc_sub_mb) |
| { |
| WORD32 i; |
| UWORD8 u1_colz = (PRED_8x8 << 6); |
| |
| for(i = 0; i < 4; i++) |
| { |
| UWORD32 ui_sub_mb_mode; |
| |
| //Inlined ih264d_uev |
| UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst; |
| UWORD32 u4_word, u4_ldz; |
| |
| /***************************************************************/ |
| /* Find leading zeros in next 32 bits */ |
| /***************************************************************/ |
| NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf); |
| u4_ldz = CLZ(u4_word); |
| /* Flush the ps_bitstrm */ |
| u4_bitstream_offset += (u4_ldz + 1); |
| /* Read the suffix from the ps_bitstrm */ |
| u4_word = 0; |
| if(u4_ldz) |
| GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, |
| u4_ldz); |
| *pu4_bitstrm_ofst = u4_bitstream_offset; |
| ui_sub_mb_mode = ((1 << u4_ldz) + u4_word - 1); |
| //Inlined ih264d_uev |
| |
| if(ui_sub_mb_mode > 3) |
| { |
| return ERROR_SUB_MB_TYPE; |
| } |
| else |
| { |
| u4_sum_mb_mode_pack = (u4_sum_mb_mode_pack << 8) | ui_sub_mb_mode; |
| /* Storing collocated information */ |
| *pu1_col_info++ = u1_colz | (UWORD8)(ui_sub_mb_mode << 4); |
| |
| COPYTHECONTEXT("sub_mb_type", ui_sub_mb_mode); |
| } |
| |
| /* check if Motion compensation is done below 8x8 */ |
| if(ui_sub_mb_mode != P_L0_8x8) |
| { |
| u1_no_submb_part_size_lt8x8_flag = 0; |
| } |
| } |
| |
| // |
| u1_num_mb_part = 4; |
| } |
| else |
| { |
| *pu1_col_info++ = (u1_mb_type << 6); |
| if(u1_mb_type) |
| *pu1_col_info++ = (u1_mb_type << 6); |
| u1_num_mb_part = pu1_num_mb_part[u1_mb_type]; |
| |
| } |
| |
| /* Decoding reference index 0: For simple profile the following */ |
| /* conditions are always true (mb_field_decoding_flag == 0); */ |
| /* (MbPartPredMode != PredL1) */ |
| |
| { |
| |
| UWORD8 uc_field = ps_cur_mb_info->u1_mb_field_decodingflag; |
| UWORD8 uc_num_ref_idx_l0_active_minus1 = |
| (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0] |
| << (u1_mbaff & uc_field)) - 1; |
| |
| if((uc_num_ref_idx_l0_active_minus1 > 0) & (u1_mb_type != PRED_8x8R0)) |
| { |
| if(1 == uc_num_ref_idx_l0_active_minus1) |
| ih264d_parse_pmb_ref_index_cavlc_range1( |
| u1_num_mb_part, ps_bitstrm, pi1_ref_idx, |
| uc_num_ref_idx_l0_active_minus1); |
| else |
| { |
| ret = ih264d_parse_pmb_ref_index_cavlc( |
| u1_num_mb_part, ps_bitstrm, pi1_ref_idx, |
| uc_num_ref_idx_l0_active_minus1); |
| if(ret != OK) |
| return ret; |
| } |
| } |
| else |
| { |
| /* When there exists only a single frame to predict from */ |
| UWORD8 uc_i; |
| for(uc_i = 0; uc_i < u1_num_mb_part; uc_i++) |
| /* Storing Reference Idx Information */ |
| pi1_ref_idx[uc_i] = 0; |
| } |
| } |
| |
| { |
| UWORD8 u1_p_idx, uc_i; |
| parse_part_params_t * ps_part = ps_dec->ps_part; |
| UWORD8 u1_sub_mb_mode, u1_num_subpart, u1_mb_part_width, u1_mb_part_height; |
| UWORD8 u1_sub_mb_num; |
| const UWORD8 * pu1_top_left_sub_mb_indx; |
| mv_pred_t * ps_mv, *ps_mv_start = ps_dec->ps_mv_cur + (u1_mb_num << 4); |
| /* Loading the table pointers */ |
| const UWORD8 * pu1_mb_partw = (const UWORD8 *)gau1_ih264d_mb_partw; |
| const UWORD8 * pu1_mb_parth = (const UWORD8 *)gau1_ih264d_mb_parth; |
| const UWORD8 * pu1_sub_mb_indx_mod = |
| (const UWORD8 *)(gau1_ih264d_submb_indx_mod) |
| + (uc_sub_mb * 6); |
| const UWORD8 * pu1_sub_mb_partw = (const UWORD8 *)gau1_ih264d_submb_partw; |
| const UWORD8 * pu1_sub_mb_parth = (const UWORD8 *)gau1_ih264d_submb_parth; |
| const UWORD8 * pu1_num_sub_mb_part = |
| (const UWORD8 *)gau1_ih264d_num_submb_part; |
| |
| UWORD16 u2_sub_mb_num = 0x028A; |
| |
| /*********************************************************/ |
| /* default initialisations for condition (uc_sub_mb == 0) */ |
| /* i.e. all are subpartitions of 8x8 */ |
| /*********************************************************/ |
| u1_sub_mb_mode = 0; |
| u1_num_subpart = 1; |
| u1_mb_part_width = pu1_mb_partw[u1_mb_type]; |
| u1_mb_part_height = pu1_mb_parth[u1_mb_type]; |
| pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_mb_type << 1); |
| u1_sub_mb_num = 0; |
| |
| /* Loop on number of partitions */ |
| for(uc_i = 0, u1_p_idx = 0; uc_i < u1_num_mb_part; uc_i++) |
| { |
| UWORD8 uc_j; |
| if(uc_sub_mb) |
| { |
| u1_sub_mb_mode = u4_sum_mb_mode_pack >> 24; |
| u1_num_subpart = pu1_num_sub_mb_part[u1_sub_mb_mode]; |
| u1_mb_part_width = pu1_sub_mb_partw[u1_sub_mb_mode]; |
| u1_mb_part_height = pu1_sub_mb_parth[u1_sub_mb_mode]; |
| pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_sub_mb_mode << 1); |
| u1_sub_mb_num = u2_sub_mb_num >> 12; |
| u4_sum_mb_mode_pack <<= 8; |
| u2_sub_mb_num <<= 4; |
| } |
| |
| /* Loop on Number of sub-partitions */ |
| for(uc_j = 0; uc_j < u1_num_subpart; uc_j++, pu1_top_left_sub_mb_indx++) |
| { |
| WORD16 i2_mvx, i2_mvy; |
| u1_sub_mb_num += *pu1_top_left_sub_mb_indx; |
| ps_mv = ps_mv_start + u1_sub_mb_num; |
| |
| /* Reading the differential Mv from the bitstream */ |
| //i2_mvx = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf); |
| //inlining ih264d_sev |
| { |
| UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst; |
| UWORD32 u4_word, u4_ldz, u4_abs_val; |
| |
| /***************************************************************/ |
| /* Find leading zeros in next 32 bits */ |
| /***************************************************************/ |
| NEXTBITS_32(u4_word, u4_bitstream_offset, |
| pu4_bitstrm_buf); |
| u4_ldz = CLZ(u4_word); |
| |
| /* Flush the ps_bitstrm */ |
| u4_bitstream_offset += (u4_ldz + 1); |
| |
| /* Read the suffix from the ps_bitstrm */ |
| u4_word = 0; |
| if(u4_ldz) |
| GETBITS(u4_word, u4_bitstream_offset, |
| pu4_bitstrm_buf, u4_ldz); |
| |
| *pu4_bitstrm_ofst = u4_bitstream_offset; |
| u4_abs_val = ((1 << u4_ldz) + u4_word) >> 1; |
| |
| if(u4_word & 0x1) |
| i2_mvx = (-(WORD32)u4_abs_val); |
| else |
| i2_mvx = (u4_abs_val); |
| } |
| //inlinined ih264d_sev |
| COPYTHECONTEXT("MVD", i2_mvx); |
| i2_mvy = ih264d_sev(pu4_bitstrm_ofst, |
| pu4_bitstrm_buf); |
| COPYTHECONTEXT("MVD", i2_mvy); |
| |
| /* Storing Info for partitions */ |
| ps_part->u1_is_direct = PART_NOT_DIRECT; |
| ps_part->u1_sub_mb_num = u1_sub_mb_num; |
| ps_part->u1_partheight = u1_mb_part_height; |
| ps_part->u1_partwidth = u1_mb_part_width; |
| |
| /* Storing Mv residuals */ |
| ps_mv->i2_mv[0] = i2_mvx; |
| ps_mv->i2_mv[1] = i2_mvy; |
| |
| /* Increment partition Index */ |
| u1_p_idx++; |
| ps_part++; |
| } |
| } |
| ps_parse_mb_data->u1_num_part = u1_p_idx; |
| ps_dec->ps_part = ps_part; |
| } |
| |
| { |
| UWORD32 u4_cbp; |
| |
| /* Read the Coded block pattern */ |
| UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst; |
| UWORD32 u4_word, u4_ldz; |
| |
| /***************************************************************/ |
| /* Find leading zeros in next 32 bits */ |
| /***************************************************************/ |
| NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf); |
| u4_ldz = CLZ(u4_word); |
| /* Flush the ps_bitstrm */ |
| u4_bitstream_offset += (u4_ldz + 1); |
| /* Read the suffix from the ps_bitstrm */ |
| u4_word = 0; |
| if(u4_ldz) |
| GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz); |
| *pu4_bitstrm_ofst = u4_bitstream_offset; |
| u4_cbp = ((1 << u4_ldz) + u4_word - 1); |
| |
| if(u4_cbp > 47) |
| return ERROR_CBP; |
| |
| u4_cbp = *((UWORD8*)gau1_ih264d_cbp_inter + u4_cbp); |
| COPYTHECONTEXT("coded_block_pattern", u4_cbp); |
| ps_cur_mb_info->u1_cbp = u4_cbp; |
| |
| /* Read the transform8x8 u4_flag if present */ |
| if((ps_dec->s_high_profile.u1_transform8x8_present) && (u4_cbp & 0xf) |
| && u1_no_submb_part_size_lt8x8_flag) |
| { |
| ps_cur_mb_info->u1_tran_form8x8 = ih264d_get_bit_h264(ps_bitstrm); |
| COPYTHECONTEXT("transform_size_8x8_flag", ps_cur_mb_info->u1_tran_form8x8); |
| ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = ps_cur_mb_info->u1_tran_form8x8; |
| } |
| |
| /* Read mb_qp_delta */ |
| if(u4_cbp) |
| { |
| WORD32 i_temp; |
| |
| UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst; |
| UWORD32 u4_word, u4_ldz, u4_abs_val; |
| |
| /***************************************************************/ |
| /* Find leading zeros in next 32 bits */ |
| /***************************************************************/ |
| NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf); |
| u4_ldz = CLZ(u4_word); |
| |
| /* Flush the ps_bitstrm */ |
| u4_bitstream_offset += (u4_ldz + 1); |
| |
| /* Read the suffix from the ps_bitstrm */ |
| u4_word = 0; |
| if(u4_ldz) |
| GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, |
| u4_ldz); |
| |
| *pu4_bitstrm_ofst = u4_bitstream_offset; |
| u4_abs_val = ((1 << u4_ldz) + u4_word) >> 1; |
| |
| if(u4_word & 0x1) |
| i_temp = (-(WORD32)u4_abs_val); |
| else |
| i_temp = (u4_abs_val); |
| |
| if((i_temp < -26) || (i_temp > 25)) |
| return ERROR_INV_RANGE_QP_T; |
| //inlinined ih264d_sev |
| |
| COPYTHECONTEXT("mb_qp_delta", i_temp); |
| if(i_temp) |
| { |
| ret = ih264d_update_qp(ps_dec, (WORD8)i_temp); |
| if(ret != OK) |
| return ret; |
| } |
| |
| ret = ih264d_parse_residual4x4_cavlc(ps_dec, ps_cur_mb_info, 0); |
| if(ret != OK) |
| return ret; |
| if(EXCEED_OFFSET(ps_bitstrm)) |
| return ERROR_EOB_TERMINATE_T; |
| } |
| else |
| { |
| ih264d_update_nnz_for_skipmb(ps_dec, ps_cur_mb_info, CAVLC); |
| } |
| |
| |
| |
| } |
| |
| return OK; |
| } |
| |
| /*! |
| ************************************************************************** |
| * \if Function name : ih264d_parse_pmb_cabac \endif |
| * |
| * \brief |
| * This function parses CABAC syntax of a P MB. |
| * |
| * \return |
| * 0 on Success and Error code otherwise |
| ************************************************************************** |
| */ |
| WORD32 ih264d_parse_pmb_cabac(dec_struct_t * ps_dec, |
| dec_mb_info_t * ps_cur_mb_info, |
| UWORD8 u1_mb_num, |
| UWORD8 u1_num_mbsNby2) |
| { |
| UWORD32 u1_num_mb_part; |
| UWORD32 uc_sub_mb; |
| parse_pmbarams_t * ps_parse_mb_data = ps_dec->ps_parse_mb_data |
| + u1_num_mbsNby2; |
| WORD8 * pi1_ref_idx = ps_parse_mb_data->i1_ref_idx[0]; |
| const UWORD8 * pu1_num_mb_part = (const UWORD8 *)gau1_ih264d_num_mb_part; |
| const UWORD32 u1_mb_type = ps_cur_mb_info->u1_mb_type; |
| UWORD8 * pu1_col_info = ps_parse_mb_data->u1_col_info; |
| UWORD32 u1_mb_mc_mode = u1_mb_type; |
| ctxt_inc_mb_info_t * p_curr_ctxt = ps_dec->ps_curr_ctxt_mb_info; |
| decoding_envirnoment_t * ps_cab_env = &ps_dec->s_cab_dec_env; |
| dec_bit_stream_t * ps_bitstrm = ps_dec->ps_bitstrm; |
| UWORD32 u4_sub_mb_pack = 0; |
| WORD32 ret; |
| |
| UWORD8 u1_no_submb_part_size_lt8x8_flag = 1; |
| ps_cur_mb_info->u1_tran_form8x8 = 0; |
| ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0; |
| |
| ps_cur_mb_info->u1_yuv_dc_block_flag = 0; |
| |
| p_curr_ctxt->u1_mb_type = CAB_P; |
| ps_cur_mb_info->u1_mb_mc_mode = u1_mb_type; |
| uc_sub_mb = ((u1_mb_type == PRED_8x8) | (u1_mb_type == PRED_8x8R0)); |
| |
| /* Reading the subMB type */ |
| if(uc_sub_mb) |
| { |
| |
| UWORD8 u1_colz = (PRED_8x8 << 6); |
| u1_mb_mc_mode = 0; |
| |
| { |
| UWORD8 u1_sub_mb_mode; |
| u1_sub_mb_mode = ih264d_parse_submb_type_cabac( |
| 0, ps_cab_env, ps_bitstrm, |
| ps_dec->p_sub_mb_type_t); |
| if(u1_sub_mb_mode > 3) |
| return ERROR_SUB_MB_TYPE; |
| |
| u4_sub_mb_pack = (u4_sub_mb_pack << 8) | u1_sub_mb_mode; |
| /* Storing collocated information */ |
| *pu1_col_info++ = u1_colz | ((UWORD8)(u1_sub_mb_mode << 4)); |
| COPYTHECONTEXT("sub_mb_type", u1_sub_mb_mode); |
| /* check if Motion compensation is done below 8x8 */ |
| if(u1_sub_mb_mode != P_L0_8x8) |
| { |
| u1_no_submb_part_size_lt8x8_flag = 0; |
| } |
| } |
| { |
| UWORD8 u1_sub_mb_mode; |
| u1_sub_mb_mode = ih264d_parse_submb_type_cabac( |
| 0, ps_cab_env, ps_bitstrm, |
| ps_dec->p_sub_mb_type_t); |
| if(u1_sub_mb_mode > 3) |
| return ERROR_SUB_MB_TYPE; |
| |
| u4_sub_mb_pack = (u4_sub_mb_pack << 8) | u1_sub_mb_mode; |
| /* Storing collocated information */ |
| *pu1_col_info++ = u1_colz | ((UWORD8)(u1_sub_mb_mode << 4)); |
| COPYTHECONTEXT("sub_mb_type", u1_sub_mb_mode); |
| /* check if Motion compensation is done below 8x8 */ |
| if(u1_sub_mb_mode != P_L0_8x8) |
| { |
| u1_no_submb_part_size_lt8x8_flag = 0; |
| } |
| } |
| { |
| UWORD8 u1_sub_mb_mode; |
| u1_sub_mb_mode = ih264d_parse_submb_type_cabac( |
| 0, ps_cab_env, ps_bitstrm, |
| ps_dec->p_sub_mb_type_t); |
| if(u1_sub_mb_mode > 3) |
| return ERROR_SUB_MB_TYPE; |
| |
| u4_sub_mb_pack = (u4_sub_mb_pack << 8) | u1_sub_mb_mode; |
| /* Storing collocated information */ |
| *pu1_col_info++ = u1_colz | ((UWORD8)(u1_sub_mb_mode << 4)); |
| COPYTHECONTEXT("sub_mb_type", u1_sub_mb_mode); |
| /* check if Motion compensation is done below 8x8 */ |
| if(u1_sub_mb_mode != P_L0_8x8) |
| { |
| u1_no_submb_part_size_lt8x8_flag = 0; |
| } |
| } |
| { |
| UWORD8 u1_sub_mb_mode; |
| u1_sub_mb_mode = ih264d_parse_submb_type_cabac( |
| 0, ps_cab_env, ps_bitstrm, |
| ps_dec->p_sub_mb_type_t); |
| if(u1_sub_mb_mode > 3) |
| return ERROR_SUB_MB_TYPE; |
| |
| u4_sub_mb_pack = (u4_sub_mb_pack << 8) | u1_sub_mb_mode; |
| /* Storing collocated information */ |
| *pu1_col_info++ = u1_colz | ((UWORD8)(u1_sub_mb_mode << 4)); |
| COPYTHECONTEXT("sub_mb_type", u1_sub_mb_mode); |
| /* check if Motion compensation is done below 8x8 */ |
| if(u1_sub_mb_mode != P_L0_8x8) |
| { |
| u1_no_submb_part_size_lt8x8_flag = 0; |
| } |
| } |
| u1_num_mb_part = 4; |
| } |
| else |
| { |
| u1_num_mb_part = pu1_num_mb_part[u1_mb_type]; |
| /* Storing collocated Mb and SubMb mode information */ |
| *pu1_col_info++ = (u1_mb_type << 6); |
| if(u1_mb_type) |
| *pu1_col_info++ = (u1_mb_type << 6); |
| } |
| /* Decoding reference index 0: For simple profile the following */ |
| /* conditions are always true (mb_field_decoding_flag == 0); */ |
| /* (MbPartPredMode != PredL1) */ |
| { |
| WORD8 * pi1_top_ref_idx_ctx_inc_arr = p_curr_ctxt->i1_ref_idx; |
| WORD8 * pi1_left_ref_idx_ctxt_inc = ps_dec->pi1_left_ref_idx_ctxt_inc; |
| UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag; |
| UWORD8 uc_field = ps_cur_mb_info->u1_mb_field_decodingflag; |
| UWORD8 uc_num_ref_idx_l0_active_minus1 = |
| (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0] |
| << (u1_mbaff & uc_field)) - 1; |
| |
| if((uc_num_ref_idx_l0_active_minus1 > 0) & (u1_mb_type != PRED_8x8R0)) |
| { |
| /* force the routine to decode ref idx for each partition */ |
| *((UWORD32 *)pi1_ref_idx) = 0x01010101; |
| ret = ih264d_parse_ref_idx_cabac(u1_num_mb_part, 0, |
| uc_num_ref_idx_l0_active_minus1, |
| u1_mb_mc_mode, pi1_ref_idx, |
| pi1_left_ref_idx_ctxt_inc, |
| pi1_top_ref_idx_ctx_inc_arr, ps_cab_env, |
| ps_bitstrm, ps_dec->p_ref_idx_t); |
| if(ret != OK) |
| return ret; |
| } |
| else |
| { |
| /* When there exists only a single frame to predict from */ |
| pi1_left_ref_idx_ctxt_inc[0] = 0; |
| pi1_left_ref_idx_ctxt_inc[1] = 0; |
| pi1_top_ref_idx_ctx_inc_arr[0] = 0; |
| pi1_top_ref_idx_ctx_inc_arr[1] = 0; |
| *((UWORD32 *)pi1_ref_idx) = 0; |
| } |
| } |
| |
| { |
| UWORD8 u1_p_idx, uc_i; |
| parse_part_params_t * ps_part = ps_dec->ps_part; |
| UWORD8 u1_sub_mb_mode, u1_num_subpart, u1_mb_part_width, u1_mb_part_height; |
| UWORD8 u1_sub_mb_num; |
| const UWORD8 * pu1_top_left_sub_mb_indx; |
| mv_pred_t *ps_mv_start = ps_dec->ps_mv_cur + (u1_mb_num << 4); |
| UWORD16 u2_sub_mb_num_pack = 0x028A; |
| |
| /* Loading the table pointers */ |
| const UWORD8 * pu1_mb_partw = (const UWORD8 *)gau1_ih264d_mb_partw; |
| const UWORD8 * pu1_mb_parth = (const UWORD8 *)gau1_ih264d_mb_parth; |
| const UWORD8 * pu1_sub_mb_indx_mod = |
| (const UWORD8 *)(gau1_ih264d_submb_indx_mod) |
| + (uc_sub_mb * 6); |
| const UWORD8 * pu1_sub_mb_partw = (const UWORD8 *)gau1_ih264d_submb_partw; |
| const UWORD8 * pu1_sub_mb_parth = (const UWORD8 *)gau1_ih264d_submb_parth; |
| const UWORD8 * pu1_num_sub_mb_part = |
| (const UWORD8 *)gau1_ih264d_num_submb_part; |
| |
| /*********************************************************/ |
| /* default initialisations for condition (uc_sub_mb == 0) */ |
| /* i.e. all are subpartitions of 8x8 */ |
| /*********************************************************/ |
| u1_sub_mb_mode = 0; |
| u1_num_subpart = 1; |
| u1_mb_part_width = pu1_mb_partw[u1_mb_type]; |
| u1_mb_part_height = pu1_mb_parth[u1_mb_type]; |
| pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_mb_type << 1); |
| u1_sub_mb_num = 0; |
| |
| /* Loop on number of partitions */ |
| for(uc_i = 0, u1_p_idx = 0; uc_i < u1_num_mb_part; uc_i++) |
| { |
| UWORD8 uc_j; |
| if(uc_sub_mb) |
| { |
| u1_sub_mb_mode = u4_sub_mb_pack >> 24; |
| u1_num_subpart = pu1_num_sub_mb_part[u1_sub_mb_mode]; |
| u1_mb_part_width = pu1_sub_mb_partw[u1_sub_mb_mode]; |
| u1_mb_part_height = pu1_sub_mb_parth[u1_sub_mb_mode]; |
| pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_sub_mb_mode << 1); |
| u1_sub_mb_num = u2_sub_mb_num_pack >> 12; |
| u4_sub_mb_pack <<= 8; |
| u2_sub_mb_num_pack <<= 4; |
| } |
| /* Loop on Number of sub-partitions */ |
| for(uc_j = 0; uc_j < u1_num_subpart; uc_j++, pu1_top_left_sub_mb_indx++) |
| { |
| mv_pred_t * ps_mv; |
| |
| u1_sub_mb_num += *pu1_top_left_sub_mb_indx; |
| ps_mv = ps_mv_start + u1_sub_mb_num; |
| |
| /* Storing Info for partitions */ |
| ps_part->u1_is_direct = PART_NOT_DIRECT; |
| ps_part->u1_sub_mb_num = u1_sub_mb_num; |
| ps_part->u1_partheight = u1_mb_part_height; |
| ps_part->u1_partwidth = u1_mb_part_width; |
| |
| /* Increment partition Index */ |
| u1_p_idx++; |
| ps_part++; |
| |
| ih264d_get_mvd_cabac(u1_sub_mb_num, 0, u1_mb_part_width, |
| u1_mb_part_height, 1, ps_dec, ps_mv); |
| } |
| } |
| ps_parse_mb_data->u1_num_part = u1_p_idx; |
| ps_dec->ps_part = ps_part; |
| } |
| { |
| UWORD8 u1_cbp; |
| |
| /* Read the Coded block pattern */ |
| u1_cbp = (WORD8)ih264d_parse_ctx_cbp_cabac(ps_dec); |
| COPYTHECONTEXT("coded_block_pattern", u1_cbp); |
| ps_cur_mb_info->u1_cbp = u1_cbp; |
| p_curr_ctxt->u1_cbp = u1_cbp; |
| p_curr_ctxt->u1_intra_chroma_pred_mode = 0; |
| p_curr_ctxt->u1_yuv_dc_csbp &= 0xFE; |
| ps_dec->pu1_left_yuv_dc_csbp[0] &= 0x6; |
| |
| if(u1_cbp > 47) |
| return ERROR_CBP; |
| |
| ps_cur_mb_info->u1_tran_form8x8 = 0; |
| ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0; |
| |
| /* Read the transform8x8 u4_flag if present */ |
| if((ps_dec->s_high_profile.u1_transform8x8_present) && (u1_cbp & 0xf) |
| && u1_no_submb_part_size_lt8x8_flag) |
| { |
| ps_cur_mb_info->u1_tran_form8x8 = ih264d_parse_transform8x8flag_cabac( |
| ps_dec, ps_cur_mb_info); |
| COPYTHECONTEXT("transform_size_8x8_flag", ps_cur_mb_info->u1_tran_form8x8); |
| p_curr_ctxt->u1_transform8x8_ctxt = ps_cur_mb_info->u1_tran_form8x8; |
| ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = ps_cur_mb_info->u1_tran_form8x8; |
| |
| } |
| else |
| { |
| p_curr_ctxt->u1_transform8x8_ctxt = 0; |
| } |
| |
| /* Read mb_qp_delta */ |
| if(u1_cbp) |
| { |
| WORD8 c_temp; |
| ret = ih264d_parse_mb_qp_delta_cabac(ps_dec, &c_temp); |
| if(ret != OK) |
| return ret; |
| COPYTHECONTEXT("mb_qp_delta", c_temp); |
| if(c_temp != 0) |
| { |
| ret = ih264d_update_qp(ps_dec, c_temp); |
| if(ret != OK) |
| return ret; |
| } |
| } |
| else |
| ps_dec->i1_prev_mb_qp_delta = 0; |
| |
| |
| |
| ih264d_parse_residual4x4_cabac(ps_dec, ps_cur_mb_info, 0); |
| if(EXCEED_OFFSET(ps_dec->ps_bitstrm)) |
| return ERROR_EOB_TERMINATE_T; |
| } |
| return OK; |
| } |
| |
| /*! |
| ************************************************************************** |
| * \if Function name : parsePSliceData \endif |
| * |
| * \brief |
| * This function parses CAVLC syntax of N MB's of a P slice. |
| * 1. After parsing syntax of N MB's, for those N MB's (less than N, incase |
| * of end of slice or end of row), MB is decoded. This process is carried |
| * for one complete MB row or till end of slice. |
| * 2. Bottom one row of current MB is copied to IntraPredLine buffers. |
| * IntraPredLine buffers are used for Intra prediction of next row. |
| * 3. Current MB row along with previous 4 rows of Luma (and 2 of Chroma) are |
| * deblocked. |
| * 4. 4 rows (2 for Chroma) previous row and 12 rows (6 for Chroma) are |
| * DMA'ed to picture buffers. |
| * |
| * \return |
| * 0 on Success and Error code otherwise |
| ************************************************************************** |
| */ |
| |
| /*! |
| ************************************************************************** |
| * \if Function name : ih264d_update_nnz_for_skipmb \endif |
| * |
| * \brief |
| * |
| * \return |
| * None |
| * |
| ************************************************************************** |
| */ |
| void ih264d_update_nnz_for_skipmb(dec_struct_t * ps_dec, |
| dec_mb_info_t * ps_cur_mb_info, |
| UWORD8 u1_entrpy) |
| { |
| UWORD32 *pu4_buf; |
| UWORD8 *pu1_buf; |
| UNUSED(u1_entrpy); |
| pu1_buf = ps_dec->pu1_left_nnz_y; |
| pu4_buf = (UWORD32 *)pu1_buf; |
| *pu4_buf = 0; |
| pu1_buf = ps_dec->pu1_left_nnz_uv; |
| pu4_buf = (UWORD32 *)pu1_buf; |
| *pu4_buf = 0; |
| pu1_buf = ps_cur_mb_info->ps_curmb->pu1_nnz_y; |
| pu4_buf = (UWORD32 *)pu1_buf; |
| *pu4_buf = 0; |
| pu1_buf = ps_cur_mb_info->ps_curmb->pu1_nnz_uv; |
| pu4_buf = (UWORD32 *)pu1_buf; |
| *pu4_buf = 0; |
| ps_cur_mb_info->ps_curmb->u2_luma_csbp = 0; |
| ps_cur_mb_info->u2_luma_csbp = 0; |
| ps_cur_mb_info->u2_chroma_csbp = 0; |
| } |
| |
| |
| |
| /*****************************************************************************/ |
| /* */ |
| /* Function Name : ih264d_parse_inter_slice_data_cabac */ |
| /* */ |
| /* Description : This function parses cabac syntax of a inter slice on */ |
| /* N MB basis. */ |
| /* */ |
| /* Inputs : ps_dec */ |
| /* sliceparams */ |
| /* firstMbInSlice */ |
| /* */ |
| /* Processing : 1. After parsing syntax for N MBs those N MBs are */ |
| /* decoded till the end of slice. */ |
| /* 2. MV prediction and DMA happens on a N/2 MB basis. */ |
| /* */ |
| /* Returns : 0 */ |
| /* */ |
| /* Issues : <List any issues or problems with this function> */ |
| /* */ |
| /* Revision History: */ |
| /* */ |
| /* DD MM YYYY Author(s) Changes (Describe the changes made) */ |
| /* 13 07 2002 Jay Draft */ |
| /* */ |
| /*****************************************************************************/ |
| WORD32 ih264d_parse_inter_slice_data_cabac(dec_struct_t * ps_dec, |
| dec_slice_params_t * ps_slice, |
| UWORD16 u2_first_mb_in_slice) |
| { |
| UWORD32 uc_more_data_flag; |
| WORD32 i2_cur_mb_addr; |
| UWORD32 u1_num_mbs, u1_num_mbsNby2, u1_mb_idx; |
| UWORD32 u1_mbaff; |
| UWORD32 u1_num_mbs_next, u1_end_of_row; |
| const UWORD16 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs; |
| UWORD32 u1_slice_end = 0; |
| UWORD32 u1_tfr_n_mb = 0; |
| UWORD32 u1_decode_nmb = 0; |
| |
| |
| deblk_mb_t *ps_cur_deblk_mb; |
| dec_mb_info_t *ps_cur_mb_info; |
| |
| parse_pmbarams_t *ps_parse_mb_data = ps_dec->ps_parse_mb_data; |
| UWORD32 u1_inter_mb_skip_type; |
| UWORD32 u1_inter_mb_type; |
| UWORD32 u1_deblk_mb_type; |
| UWORD32 u1_mb_threshold; |
| dec_bit_stream_t * const ps_bitstrm = ps_dec->ps_bitstrm; |
| WORD32 ret = OK; |
| |
| /******************************************************/ |
| /* Initialisations specific to B or P slice */ |
| /******************************************************/ |
| if(ps_slice->u1_slice_type == P_SLICE) |
| { |
| u1_inter_mb_skip_type = CAB_P_SKIP; |
| u1_inter_mb_type = P_MB; |
| u1_deblk_mb_type = D_INTER_MB; |
| u1_mb_threshold = 5; |
| } |
| else // B_SLICE |
| { |
| u1_inter_mb_skip_type = CAB_B_SKIP; |
| u1_inter_mb_type = B_MB; |
| u1_deblk_mb_type = D_B_SLICE; |
| u1_mb_threshold = 23; |
| } |
| |
| /******************************************************/ |
| /* Slice Level Initialisations */ |
| /******************************************************/ |
| i2_cur_mb_addr = u2_first_mb_in_slice; |
| ps_dec->u1_qp = ps_slice->u1_slice_qp; |
| ih264d_update_qp(ps_dec, 0); |
| u1_mb_idx = ps_dec->u1_mb_idx; |
| u1_num_mbs = u1_mb_idx; |
| u1_num_mbsNby2 = 0; |
| u1_mbaff = ps_slice->u1_mbaff_frame_flag; |
| i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff; |
| uc_more_data_flag = 1; |
| |
| /* Initialisations specific to cabac */ |
| if(ps_bitstrm->u4_ofst & 0x07) |
| { |
| ps_bitstrm->u4_ofst += 8; |
| ps_bitstrm->u4_ofst &= 0xFFFFFFF8; |
| } |
| |
| ret = ih264d_init_cabac_dec_envirnoment(&(ps_dec->s_cab_dec_env), ps_bitstrm); |
| if(ret != OK) |
| return ret; |
| |
| ps_dec->i1_prev_mb_qp_delta = 0; |
| |
| while(!u1_slice_end) |
| { |
| UWORD8 u1_mb_type; |
| UWORD32 u4_mb_skip; |
| |
| ps_dec->pv_prev_mb_parse_tu_coeff_data = ps_dec->pv_parse_tu_coeff_data; |
| |
| if(i2_cur_mb_addr > ps_dec->ps_cur_sps->u2_max_mb_addr) |
| { |
| break; |
| } |
| |
| ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs; |
| ps_dec->u4_num_mbs_cur_nmb = u1_num_mbs; |
| |
| ps_cur_mb_info->u1_Mux = 0; |
| ps_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff); |
| ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs; |
| |
| ps_cur_mb_info->u1_end_of_slice = 0; |
| |
| /* Storing Default partition info */ |
| ps_parse_mb_data->u1_num_part = 1; |
| ps_parse_mb_data->u1_isI_mb = 0; |
| |
| /***************************************************************/ |
| /* Get the required information for decoding of MB */ |
| /* mb_x, mb_y , neighbour availablity, */ |
| /***************************************************************/ |
| u4_mb_skip = ps_dec->pf_get_mb_info(ps_dec, i2_cur_mb_addr, ps_cur_mb_info, 1); |
| |
| /*********************************************************************/ |
| /* initialize u1_tran_form8x8 to zero to aviod uninitialized accesses */ |
| /*********************************************************************/ |
| ps_cur_mb_info->u1_tran_form8x8 = 0; |
| ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0; |
| |
| /***************************************************************/ |
| /* Set the deblocking parameters for this MB */ |
| /***************************************************************/ |
| if(ps_dec->u4_app_disable_deblk_frm == 0) |
| ih264d_set_deblocking_parameters(ps_cur_deblk_mb, ps_slice, |
| ps_dec->u1_mb_ngbr_availablity, |
| ps_dec->u1_cur_mb_fld_dec_flag); |
| |
| if(u4_mb_skip) |
| { |
| |
| /* Set appropriate flags in ps_cur_mb_info and ps_dec */ |
| memset(ps_dec->ps_curr_ctxt_mb_info, 0, sizeof(ctxt_inc_mb_info_t)); |
| ps_dec->ps_curr_ctxt_mb_info->u1_mb_type = u1_inter_mb_skip_type; |
| |
| MEMSET_16BYTES(&ps_dec->pu1_left_mv_ctxt_inc[0][0], 0); |
| |
| *((UWORD32 *)ps_dec->pi1_left_ref_idx_ctxt_inc) = 0; |
| *(ps_dec->pu1_left_yuv_dc_csbp) = 0; |
| |
| ps_dec->i1_prev_mb_qp_delta = 0; |
| ps_cur_mb_info->u1_mb_type = MB_SKIP; |
| ps_cur_mb_info->u1_cbp = 0; |
| |
| { |
| /* Storing Skip partition info */ |
| parse_part_params_t *ps_part_info = ps_dec->ps_part; |
| ps_part_info->u1_is_direct = PART_DIRECT_16x16; |
| ps_part_info->u1_sub_mb_num = 0; |
| ps_dec->ps_part++; |
| } |
| |
| /* Update Nnzs */ |
| ih264d_update_nnz_for_skipmb(ps_dec, ps_cur_mb_info, CABAC); |
| |
| ps_cur_mb_info->ps_curmb->u1_mb_type = u1_inter_mb_type; |
| ps_cur_deblk_mb->u1_mb_type |= u1_deblk_mb_type; |
| ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp; |
| |
| } |
| else |
| { |
| |
| /* Macroblock Layer Begins */ |
| /* Decode the u1_mb_type */ |
| u1_mb_type = ih264d_parse_mb_type_cabac(ps_dec); |
| ps_cur_mb_info->u1_mb_type = u1_mb_type; |
| if(u1_mb_type > (25 + u1_mb_threshold)) |
| return ERROR_MB_TYPE; |
| |
| /* Parse Macroblock Data */ |
| if(u1_mb_type < u1_mb_threshold) |
| { |
| ps_cur_mb_info->ps_curmb->u1_mb_type = u1_inter_mb_type; |
| *(ps_dec->pu1_left_yuv_dc_csbp) &= 0x6; |
| |
| ret = ps_dec->pf_parse_inter_mb(ps_dec, ps_cur_mb_info, u1_num_mbs, |
| u1_num_mbsNby2); |
| if(ret != OK) |
| return ret; |
| ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp; |
| ps_cur_deblk_mb->u1_mb_type |= u1_deblk_mb_type; |
| } |
| else |
| { |
| /* Storing Intra partition info */ |
| ps_parse_mb_data->u1_num_part = 0; |
| ps_parse_mb_data->u1_isI_mb = 1; |
| |
| if((25 + u1_mb_threshold) == u1_mb_type) |
| { |
| /* I_PCM_MB */ |
| ps_cur_mb_info->ps_curmb->u1_mb_type = I_PCM_MB; |
| ret = ih264d_parse_ipcm_mb(ps_dec, ps_cur_mb_info, u1_num_mbs); |
| if(ret != OK) |
| return ret; |
| ps_cur_deblk_mb->u1_mb_qp = 0; |
| } |
| else |
| { |
| if(u1_mb_type == u1_mb_threshold) |
| ps_cur_mb_info->ps_curmb->u1_mb_type = I_4x4_MB; |
| else |
| ps_cur_mb_info->ps_curmb->u1_mb_type = I_16x16_MB; |
| |
| ret = ih264d_parse_imb_cabac( |
| ps_dec, ps_cur_mb_info, |
| (UWORD8)(u1_mb_type - u1_mb_threshold)); |
| if(ret != OK) |
| return ret; |
| ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp; |
| } |
| ps_cur_deblk_mb->u1_mb_type |= D_INTRA_MB; |
| |
| } |
| |
| } |
| |
| if(u1_mbaff) |
| { |
| ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info); |
| } |
| |
| |
| if(ps_cur_mb_info->u1_topmb && u1_mbaff) |
| uc_more_data_flag = 1; |
| else |
| { |
| uc_more_data_flag = ih264d_decode_terminate(&ps_dec->s_cab_dec_env, |
| ps_bitstrm); |
| uc_more_data_flag = !uc_more_data_flag; |
| COPYTHECONTEXT("Decode Sliceterm",!uc_more_data_flag); |
| } |
| |
| if(u1_mbaff) |
| { |
| if(!uc_more_data_flag && (0 == (i2_cur_mb_addr & 1))) |
| { |
| return ERROR_EOB_FLUSHBITS_T; |
| } |
| } |
| /* Next macroblock information */ |
| i2_cur_mb_addr++; |
| u1_num_mbs++; |
| u1_num_mbsNby2++; |
| ps_parse_mb_data++; |
| |
| /****************************************************************/ |
| /* Check for End Of Row and other flags that determine when to */ |
| /* do DMA setup for N/2-Mb, Decode for N-Mb, and Transfer for */ |
| /* N-Mb */ |
| /****************************************************************/ |
| u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec->u2_mbx - 1; |
| u1_end_of_row = (!u1_num_mbs_next) && (!(u1_mbaff && (u1_num_mbs & 0x01))); |
| u1_slice_end = !uc_more_data_flag; |
| u1_tfr_n_mb = (u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row |
| || u1_slice_end; |
| u1_decode_nmb = u1_tfr_n_mb || u1_slice_end; |
| ps_cur_mb_info->u1_end_of_slice = u1_slice_end; |
| /*u1_dma_nby2mb = u1_decode_nmb || |
| (u1_num_mbsNby2 == ps_dec->u1_recon_mb_grp_pair);*/ |
| |
| //if(u1_dma_nby2mb) |
| if(u1_decode_nmb) |
| { |
| |
| ps_dec->pf_mvpred_ref_tfr_nby2mb(ps_dec, u1_mb_idx, u1_num_mbs); |
| u1_num_mbsNby2 = 0; |
| |
| { |
| ps_parse_mb_data = ps_dec->ps_parse_mb_data; |
| ps_dec->ps_part = ps_dec->ps_parse_part_params; |
| } |
| } |
| |
| /*H264_DEC_DEBUG_PRINT("Pic: %d Mb_X=%d Mb_Y=%d", |
| ps_slice->i4_poc >> ps_slice->u1_field_pic_flag, |
| ps_dec->u2_mbx,ps_dec->u2_mby + (1 - ps_cur_mb_info->u1_topmb)); |
| H264_DEC_DEBUG_PRINT("u1_decode_nmb: %d, u1_num_mbs: %d", u1_decode_nmb, u1_num_mbs);*/ |
| if(u1_decode_nmb) |
| { |
| |
| if(ps_dec->u1_separate_parse) |
| { |
| ih264d_parse_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, |
| u1_num_mbs_next, u1_tfr_n_mb, u1_end_of_row); |
| ps_dec->ps_nmb_info += u1_num_mbs; |
| } |
| else |
| { |
| ih264d_decode_recon_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, |
| u1_num_mbs_next, u1_tfr_n_mb, |
| u1_end_of_row); |
| } |
| ps_dec->u2_total_mbs_coded += u1_num_mbs; |
| if(u1_tfr_n_mb) |
| u1_num_mbs = 0; |
| u1_mb_idx = u1_num_mbs; |
| ps_dec->u1_mb_idx = u1_num_mbs; |
| |
| } |
| } |
| |
| |
| ps_dec->u4_num_mbs_cur_nmb = 0; |
| ps_dec->ps_cur_slice->u4_mbs_in_slice = i2_cur_mb_addr |
| |
| - (u2_first_mb_in_slice << u1_mbaff); |
| |
| return ret; |
| } |
| |
| /*****************************************************************************/ |
| /* */ |
| /* Function Name : ih264d_parse_inter_slice_data_cavlc */ |
| /* */ |
| /* Description : This function parses cavlc syntax of a inter slice on */ |
| /* N MB basis. */ |
| /* */ |
| /* Inputs : ps_dec */ |
| /* sliceparams */ |
| /* firstMbInSlice */ |
| /* */ |
| /* Processing : 1. After parsing syntax for N MBs those N MBs are */ |
| /* decoded till the end of slice. */ |
| /* 2. MV prediction and DMA happens on a N/2 MB basis. */ |
| /* */ |
| /* Returns : 0 */ |
| /* */ |
| /* Issues : <List any issues or problems with this function> */ |
| /* */ |
| /* Revision History: */ |
| /* */ |
| /* DD MM YYYY Author(s) Changes (Describe the changes made) */ |
| /* 13 07 2002 Jay Draft */ |
| /* */ |
| /*****************************************************************************/ |
| |
| WORD32 ih264d_parse_inter_slice_data_cavlc(dec_struct_t * ps_dec, |
| dec_slice_params_t * ps_slice, |
| UWORD16 u2_first_mb_in_slice) |
| { |
| UWORD32 uc_more_data_flag; |
| WORD32 i2_cur_mb_addr; |
| UWORD32 u1_num_mbs, u1_num_mbsNby2, u1_mb_idx; |
| UWORD32 i2_mb_skip_run; |
| UWORD32 u1_read_mb_type; |
| |
| UWORD32 u1_mbaff; |
| UWORD32 u1_num_mbs_next, u1_end_of_row; |
| const UWORD32 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs; |
| UWORD32 u1_slice_end = 0; |
| UWORD32 u1_tfr_n_mb = 0; |
| UWORD32 u1_decode_nmb = 0; |
| |
| dec_bit_stream_t * const ps_bitstrm = ps_dec->ps_bitstrm; |
| UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; |
| UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst; |
| deblk_mb_t *ps_cur_deblk_mb; |
| dec_mb_info_t *ps_cur_mb_info; |
| parse_pmbarams_t *ps_parse_mb_data = ps_dec->ps_parse_mb_data; |
| UWORD32 u1_inter_mb_type; |
| UWORD32 u1_deblk_mb_type; |
| UWORD32 u1_mb_threshold; |
| WORD32 ret = OK; |
| |
| /******************************************************/ |
| /* Initialisations specific to B or P slice */ |
| /******************************************************/ |
| |
| if(ps_slice->u1_slice_type == P_SLICE) |
| { |
| u1_inter_mb_type = P_MB; |
| u1_deblk_mb_type = D_INTER_MB; |
| u1_mb_threshold = 5; |
| } |
| else // B_SLICE |
| { |
| u1_inter_mb_type = B_MB; |
| u1_deblk_mb_type = D_B_SLICE; |
| u1_mb_threshold = 23; |
| } |
| /******************************************************/ |
| /* Slice Level Initialisations */ |
| /******************************************************/ |
| ps_dec->u1_qp = ps_slice->u1_slice_qp; |
| ih264d_update_qp(ps_dec, 0); |
| u1_mb_idx = ps_dec->u1_mb_idx; |
| u1_num_mbs = u1_mb_idx; |
| |
| u1_num_mbsNby2 = 0; |
| u1_mbaff = ps_slice->u1_mbaff_frame_flag; |
| i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff; |
| i2_mb_skip_run = 0; |
| uc_more_data_flag = 1; |
| u1_read_mb_type = 0; |
| |
| while(!u1_slice_end) |
| { |
| UWORD8 u1_mb_type; |
| |
| ps_dec->pv_prev_mb_parse_tu_coeff_data = ps_dec->pv_parse_tu_coeff_data; |
| |
| if(i2_cur_mb_addr > ps_dec->ps_cur_sps->u2_max_mb_addr) |
| { |
| break; |
| } |
| |
| |
| ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs; |
| ps_dec->u4_num_mbs_cur_nmb = u1_num_mbs; |
| |
| ps_cur_mb_info->u1_Mux = 0; |
| ps_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff); |
| ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs; |
| |
| ps_cur_mb_info->u1_end_of_slice = 0; |
| |
| /* Storing Default partition info */ |
| ps_parse_mb_data->u1_num_part = 1; |
| ps_parse_mb_data->u1_isI_mb = 0; |
| |
| if((!i2_mb_skip_run) && (!u1_read_mb_type)) |
| { |
| |
| //Inlined ih264d_uev |
| UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst; |
| UWORD32 u4_word, u4_ldz; |
| |
| /***************************************************************/ |
| /* Find leading zeros in next 32 bits */ |
| /***************************************************************/ |
| NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf); |
| |
| u4_ldz = CLZ(u4_word); |
| |
| /* Flush the ps_bitstrm */ |
| u4_bitstream_offset += (u4_ldz + 1); |
| /* Read the suffix from the ps_bitstrm */ |
| u4_word = 0; |
| if(u4_ldz) |
| { |
| GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, |
| u4_ldz); |
| } |
| *pu4_bitstrm_ofst = u4_bitstream_offset; |
| i2_mb_skip_run = ((1 << u4_ldz) + u4_word - 1); |
| //Inlined ih264d_uev |
| COPYTHECONTEXT("mb_skip_run", i2_mb_skip_run); |
| uc_more_data_flag = MORE_RBSP_DATA(ps_bitstrm); |
| u1_read_mb_type = uc_more_data_flag; |
| } |
| |
| /***************************************************************/ |
| /* Get the required information for decoding of MB */ |
| /* mb_x, mb_y , neighbour availablity, */ |
| /***************************************************************/ |
| ps_dec->pf_get_mb_info(ps_dec, i2_cur_mb_addr, ps_cur_mb_info, i2_mb_skip_run); |
| |
| /***************************************************************/ |
| /* Set the deblocking parameters for this MB */ |
| /***************************************************************/ |
| if(ps_dec->u4_app_disable_deblk_frm == 0) |
| ih264d_set_deblocking_parameters(ps_cur_deblk_mb, ps_slice, |
| ps_dec->u1_mb_ngbr_availablity, |
| ps_dec->u1_cur_mb_fld_dec_flag); |
| |
| if(i2_mb_skip_run) |
| { |
| /* Set appropriate flags in ps_cur_mb_info and ps_dec */ |
| ps_dec->i1_prev_mb_qp_delta = 0; |
| ps_dec->u1_sub_mb_num = 0; |
| ps_cur_mb_info->u1_mb_type = MB_SKIP; |
| ps_cur_mb_info->u1_mb_mc_mode = PRED_16x16; |
| ps_cur_mb_info->u1_cbp = 0; |
| |
| { |
| /* Storing Skip partition info */ |
| parse_part_params_t *ps_part_info = ps_dec->ps_part; |
| ps_part_info->u1_is_direct = PART_DIRECT_16x16; |
| ps_part_info->u1_sub_mb_num = 0; |
| ps_dec->ps_part++; |
| } |
| |
| /* Update Nnzs */ |
| ih264d_update_nnz_for_skipmb(ps_dec, ps_cur_mb_info, CAVLC); |
| |
| ps_cur_mb_info->ps_curmb->u1_mb_type = u1_inter_mb_type; |
| ps_cur_deblk_mb->u1_mb_type |= u1_deblk_mb_type; |
| |
| i2_mb_skip_run--; |
| } |
| else |
| { |
| u1_read_mb_type = 0; |
| /**************************************************************/ |
| /* Macroblock Layer Begins, Decode the u1_mb_type */ |
| /**************************************************************/ |
| { |
| UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst; |
| UWORD32 u4_word, u4_ldz, u4_temp; |
| |
| |
| //Inlined ih264d_uev |
| /***************************************************************/ |
| /* Find leading zeros in next 32 bits */ |
| /***************************************************************/ |
| NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf); |
| u4_ldz = CLZ(u4_word); |
| /* Flush the ps_bitstrm */ |
| u4_bitstream_offset += (u4_ldz + 1); |
| /* Read the suffix from the ps_bitstrm */ |
| u4_word = 0; |
| if(u4_ldz) |
| GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, |
| u4_ldz); |
| *pu4_bitstrm_ofst = u4_bitstream_offset; |
| u4_temp = ((1 << u4_ldz) + u4_word - 1); |
| //Inlined ih264d_uev |
| if(u4_temp > (UWORD32)(25 + u1_mb_threshold)) |
| return ERROR_MB_TYPE; |
| u1_mb_type = u4_temp; |
| COPYTHECONTEXT("u1_mb_type", u1_mb_type); |
| } |
| ps_cur_mb_info->u1_mb_type = u1_mb_type; |
| |
| /**************************************************************/ |
| /* Parse Macroblock data */ |
| /**************************************************************/ |
| if(u1_mb_type < u1_mb_threshold) |
| { |
| ps_cur_mb_info->ps_curmb->u1_mb_type = u1_inter_mb_type; |
| |
| ret = ps_dec->pf_parse_inter_mb(ps_dec, ps_cur_mb_info, u1_num_mbs, |
| u1_num_mbsNby2); |
| if(ret != OK) |
| return ret; |
| ps_cur_deblk_mb->u1_mb_type |= u1_deblk_mb_type; |
| } |
| else |
| { |
| /* Storing Intra partition info */ |
| ps_parse_mb_data->u1_num_part = 0; |
| ps_parse_mb_data->u1_isI_mb = 1; |
| |
| if((25 + u1_mb_threshold) == u1_mb_type) |
| { |
| /* I_PCM_MB */ |
| ps_cur_mb_info->ps_curmb->u1_mb_type = I_PCM_MB; |
| ret = ih264d_parse_ipcm_mb(ps_dec, ps_cur_mb_info, u1_num_mbs); |
| if(ret != OK) |
| return ret; |
| ps_dec->u1_qp = 0; |
| } |
| else |
| { |
| ret = ih264d_parse_imb_cavlc( |
| ps_dec, ps_cur_mb_info, u1_num_mbs, |
| (UWORD8)(u1_mb_type - u1_mb_threshold)); |
| if(ret != OK) |
| return ret; |
| } |
| |
| ps_cur_deblk_mb->u1_mb_type |= D_INTRA_MB; |
| } |
| uc_more_data_flag = MORE_RBSP_DATA(ps_bitstrm); |
| } |
| ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp; |
| |
| if(u1_mbaff) |
| { |
| ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info); |
| if(!uc_more_data_flag && !i2_mb_skip_run && (0 == (i2_cur_mb_addr & 1))) |
| { |
| return ERROR_EOB_FLUSHBITS_T; |
| } |
| } |
| /**************************************************************/ |
| /* Get next Macroblock address */ |
| /**************************************************************/ |
| i2_cur_mb_addr++; |
| |
| u1_num_mbs++; |
| u1_num_mbsNby2++; |
| ps_parse_mb_data++; |
| |
| /****************************************************************/ |
| /* Check for End Of Row and other flags that determine when to */ |
| /* do DMA setup for N/2-Mb, Decode for N-Mb, and Transfer for */ |
| /* N-Mb */ |
| /****************************************************************/ |
| u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec->u2_mbx - 1; |
| u1_end_of_row = (!u1_num_mbs_next) && (!(u1_mbaff && (u1_num_mbs & 0x01))); |
| u1_slice_end = (!(uc_more_data_flag || i2_mb_skip_run)); |
| u1_tfr_n_mb = (u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row |
| || u1_slice_end; |
| u1_decode_nmb = u1_tfr_n_mb || u1_slice_end; |
| ps_cur_mb_info->u1_end_of_slice = u1_slice_end; |
| |
| /*u1_dma_nby2mb = u1_decode_nmb || |
| (u1_num_mbsNby2 == ps_dec->u1_recon_mb_grp_pair);*/ |
| |
| //if(u1_dma_nby2mb) |
| if(u1_decode_nmb) |
| { |
| ps_dec->pf_mvpred_ref_tfr_nby2mb(ps_dec, u1_mb_idx, u1_num_mbs); |
| u1_num_mbsNby2 = 0; |
| |
| { |
| ps_parse_mb_data = ps_dec->ps_parse_mb_data; |
| ps_dec->ps_part = ps_dec->ps_parse_part_params; |
| } |
| } |
| |
| /*H264_DEC_DEBUG_PRINT("Pic: %d Mb_X=%d Mb_Y=%d", |
| ps_slice->i4_poc >> ps_slice->u1_field_pic_flag, |
| ps_dec->u2_mbx,ps_dec->u2_mby + (1 - ps_cur_mb_info->u1_topmb)); |
| H264_DEC_DEBUG_PRINT("u1_decode_nmb: %d", u1_decode_nmb);*/ |
| if(u1_decode_nmb) |
| { |
| |
| |
| |
| if(ps_dec->u1_separate_parse) |
| { |
| ih264d_parse_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, |
| u1_num_mbs_next, u1_tfr_n_mb, u1_end_of_row); |
| ps_dec->ps_nmb_info += u1_num_mbs; |
| } |
| else |
| { |
| ih264d_decode_recon_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, |
| u1_num_mbs_next, u1_tfr_n_mb, |
| u1_end_of_row); |
| } |
| ps_dec->u2_total_mbs_coded += u1_num_mbs; |
| if(u1_tfr_n_mb) |
| u1_num_mbs = 0; |
| u1_mb_idx = u1_num_mbs; |
| ps_dec->u1_mb_idx = u1_num_mbs; |
| |
| } |
| //ps_dec->ps_pred++; |
| } |
| |
| ps_dec->u4_num_mbs_cur_nmb = 0; |
| ps_dec->ps_cur_slice->u4_mbs_in_slice = i2_cur_mb_addr |
| - (u2_first_mb_in_slice << u1_mbaff); |
| |
| |
| return ret; |
| } |
| |
| WORD32 ih264d_mark_err_slice_skip(dec_struct_t * ps_dec, |
| WORD32 num_mb_skip, |
| UWORD8 u1_is_idr_slice, |
| UWORD16 u2_frame_num, |
| pocstruct_t *ps_cur_poc, |
| WORD32 prev_slice_err) |
| { |
| WORD32 i2_cur_mb_addr; |
| UWORD32 u1_num_mbs, u1_num_mbsNby2; |
| UWORD32 u1_mb_idx = ps_dec->u1_mb_idx; |
| UWORD32 i2_mb_skip_run; |
| |
| UWORD32 u1_num_mbs_next, u1_end_of_row; |
| const UWORD32 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs; |
| UWORD32 u1_slice_end; |
| UWORD32 u1_tfr_n_mb; |
| UWORD32 u1_decode_nmb; |
| dec_bit_stream_t * const ps_bitstrm = ps_dec->ps_bitstrm; |
| dec_slice_params_t * ps_slice = ps_dec->ps_cur_slice; |
| UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; |
| UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst; |
| deblk_mb_t *ps_cur_deblk_mb; |
| dec_mb_info_t *ps_cur_mb_info; |
| parse_pmbarams_t *ps_parse_mb_data; |
| UWORD32 u1_inter_mb_type; |
| UWORD32 u1_deblk_mb_type; |
| UWORD16 u2_total_mbs_coded; |
| UWORD32 u1_mbaff; |
| parse_part_params_t *ps_part_info; |
| WORD32 ret; |
| UNUSED(u1_is_idr_slice); |
| |
| if(ps_dec->ps_dec_err_status->u1_err_flag & REJECT_CUR_PIC) |
| { |
| ih264d_err_pic_dispbuf_mgr(ps_dec); |
| return 0; |
| } |
| |
| if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag && (num_mb_skip & 1)) |
| { |
| num_mb_skip++; |
| } |
| ps_dec->ps_dpb_cmds->u1_long_term_reference_flag = 0; |
| if(prev_slice_err == 1) |
| { |
| /* first slice - missing/header corruption */ |
| ps_dec->ps_cur_slice->u2_frame_num = u2_frame_num; |
| { |
| WORD32 i, j, poc = 0; |
| |
| ps_dec->ps_cur_slice->u2_first_mb_in_slice = 0; |
| |
| ps_dec->pf_mvpred = ih264d_mvpred_nonmbaff; |
| ps_dec->p_form_mb_part_info = ih264d_form_mb_part_info_bp; |
| ps_dec->p_motion_compensate = ih264d_motion_compensate_bp; |
| |
| if(ps_dec->ps_cur_pic != NULL) |
| poc = ps_dec->ps_cur_pic->i4_poc + 2; |
| |
| j = -1; |
| for(i = 0; i < MAX_NUM_PIC_PARAMS; i++) |
| { |
| if(ps_dec->ps_pps[i].u1_is_valid == TRUE) |
| { |
| if(ps_dec->ps_pps[i].ps_sps->u1_is_valid == TRUE) |
| { |
| j = i; |
| break; |
| } |
| } |
| } |
| |
| //if valid SPS PPS is not found return error |
| if(j == -1) |
| { |
| return ERROR_INV_SLICE_HDR_T; |
| } |
| |
| /* call ih264d_start_of_pic only if it was not called earlier*/ |
| if(ps_dec->u4_pic_buf_got == 0) |
| { |
| //initialize slice params required by ih264d_start_of_pic to valid values |
| ps_dec->ps_cur_slice->u1_slice_type = P_SLICE; |
| ps_dec->ps_cur_slice->u1_nal_ref_idc = 1; |
| ps_dec->ps_cur_slice->u1_nal_unit_type = 1; |
| ret = ih264d_start_of_pic(ps_dec, poc, ps_cur_poc, |
| ps_dec->ps_cur_slice->u2_frame_num, |
| &ps_dec->ps_pps[j]); |
| |
| if(ret != OK) |
| { |
| return ret; |
| } |
| } |
| |
| ps_dec->ps_ref_pic_buf_lx[0][0]->u1_pic_buf_id = 0; |
| |
| ps_dec->u4_output_present = 0; |
| |
| { |
| ih264d_get_next_display_field(ps_dec, |
| ps_dec->ps_out_buffer, |
| &(ps_dec->s_disp_op)); |
| /* If error code is non-zero then there is no buffer available for display, |
| hence avoid format conversion */ |
| |
| if(0 != ps_dec->s_disp_op.u4_error_code) |
| { |
| ps_dec->u4_fmt_conv_cur_row = ps_dec->s_disp_frame_info.u4_y_ht; |
| } |
| else |
| ps_dec->u4_output_present = 1; |
| } |
| |
| if(ps_dec->u1_separate_parse == 1) |
| { |
| if(ps_dec->u4_dec_thread_created == 0) |
| { |
| ithread_create(ps_dec->pv_dec_thread_handle, NULL, |
| (void *)ih264d_decode_picture_thread, |
| (void *)ps_dec); |
| |
| ps_dec->u4_dec_thread_created = 1; |
| } |
| |
| if((ps_dec->u4_num_cores == 3) && |
| ((ps_dec->u4_app_disable_deblk_frm == 0) || ps_dec->i1_recon_in_thread3_flag) |
| && (ps_dec->u4_bs_deblk_thread_created == 0)) |
| { |
| ps_dec->u4_start_recon_deblk = 0; |
| ithread_create(ps_dec->pv_bs_deblk_thread_handle, NULL, |
| (void *)ih264d_recon_deblk_thread, |
| (void *)ps_dec); |
| ps_dec->u4_bs_deblk_thread_created = 1; |
| } |
| } |
| } |
| } |
| else |
| { |
| // Middle / last slice |
| |
| dec_slice_struct_t *ps_parse_cur_slice; |
| ps_parse_cur_slice = ps_dec->ps_dec_slice_buf + ps_dec->u2_cur_slice_num; |
| |
| if(ps_dec->u1_slice_header_done |
| && ps_parse_cur_slice == ps_dec->ps_parse_cur_slice) |
| { |
| // Slice data corrupted |
| // in the case of mbaff, conceal from the even mb. |
| if((ps_dec->ps_cur_slice->u1_mbaff_frame_flag) && (ps_dec->u4_num_mbs_cur_nmb & 1)) |
| { |
| ps_dec->u4_num_mbs_cur_nmb = ps_dec->u4_num_mbs_cur_nmb - 1; |
| ps_dec->u2_cur_mb_addr--; |
| } |
| |
| u1_num_mbs = ps_dec->u4_num_mbs_cur_nmb; |
| if(u1_num_mbs) |
| { |
| ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs - 1; |
| } |
| else |
| { |
| if(ps_dec->u1_separate_parse) |
| { |
| ps_cur_mb_info = ps_dec->ps_nmb_info; |
| } |
| else |
| { |
| ps_cur_mb_info = ps_dec->ps_nmb_info |
| + ps_dec->u4_num_mbs_prev_nmb - 1; |
| } |
| } |
| |
| ps_dec->u2_mby = ps_cur_mb_info->u2_mby; |
| ps_dec->u2_mbx = ps_cur_mb_info->u2_mbx; |
| |
| ps_dec->u1_mb_ngbr_availablity = |
| ps_cur_mb_info->u1_mb_ngbr_availablity; |
| |
| if(u1_num_mbs) |
| { |
| // Going back 1 mb |
| ps_dec->pv_parse_tu_coeff_data = ps_dec->pv_prev_mb_parse_tu_coeff_data; |
| ps_dec->u2_cur_mb_addr--; |
| ps_dec->i4_submb_ofst -= SUB_BLK_SIZE; |
| |
| // Parse/decode N-MB left unparsed |
| if (ps_dec->u1_pr_sl_type == P_SLICE |
| || ps_dec->u1_pr_sl_type == B_SLICE) |
| { |
| ps_dec->pf_mvpred_ref_tfr_nby2mb(ps_dec, u1_mb_idx, u1_num_mbs); |
| ps_dec->ps_part = ps_dec->ps_parse_part_params; |
| } |
| |
| u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec->u2_mbx - 1; |
| u1_end_of_row = (!u1_num_mbs_next) |
| && (!(ps_dec->ps_cur_slice->u1_mbaff_frame_flag && (u1_num_mbs & 0x01))); |
| u1_slice_end = 1; |
| u1_tfr_n_mb = 1; |
| ps_cur_mb_info->u1_end_of_slice = u1_slice_end; |
| |
| if(ps_dec->u1_separate_parse) |
| { |
| ih264d_parse_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, |
| u1_num_mbs_next, u1_tfr_n_mb, u1_end_of_row); |
| ps_dec->ps_nmb_info += u1_num_mbs; |
| } |
| else |
| { |
| ih264d_decode_recon_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, |
| u1_num_mbs_next, u1_tfr_n_mb, u1_end_of_row); |
| } |
| ps_dec->u2_total_mbs_coded += u1_num_mbs; |
| ps_dec->u1_mb_idx = 0; |
| ps_dec->u4_num_mbs_cur_nmb = 0; |
| } |
| |
| if(ps_dec->u2_total_mbs_coded |
| >= ps_dec->u2_frm_ht_in_mbs * ps_dec->u2_frm_wd_in_mbs) |
| { |
| ps_dec->u1_pic_decode_done = 1; |
| return 0; |
| } |
| |
| /* Inserting new slice only if the current slice has atleast 1 MB*/ |
| if(ps_dec->ps_parse_cur_slice->u4_first_mb_in_slice < |
| (UWORD32)(ps_dec->u2_total_mbs_coded >> ps_slice->u1_mbaff_frame_flag)) |
| { |
| ps_dec->i2_prev_slice_mbx = ps_dec->u2_mbx; |
| ps_dec->i2_prev_slice_mby = ps_dec->u2_mby; |
| ps_dec->u2_cur_slice_num++; |
| ps_dec->ps_parse_cur_slice++; |
| } |
| |
| } |
| else |
| { |
| // Slice missing / header corrupted |
| ps_dec->ps_parse_cur_slice = ps_dec->ps_dec_slice_buf |
| + ps_dec->u2_cur_slice_num; |
| } |
| } |
| |
| /******************************************************/ |
| /* Initializations to new slice */ |
| /******************************************************/ |
| { |
| WORD32 num_entries; |
| WORD32 size; |
| UWORD8 *pu1_buf; |
| |
| num_entries = MAX_FRAMES; |
| if((1 >= ps_dec->ps_cur_sps->u1_num_ref_frames) && |
| (0 == ps_dec->i4_display_delay)) |
| { |
| num_entries = 1; |
| } |
| num_entries = ((2 * num_entries) + 1); |
| num_entries *= 2; |
| |
| size = num_entries * sizeof(void *); |
| size += PAD_MAP_IDX_POC * sizeof(void *); |
| |
| pu1_buf = (UWORD8 *)ps_dec->pv_map_ref_idx_to_poc_buf; |
| pu1_buf += size * ps_dec->u2_cur_slice_num; |
| ps_dec->ps_parse_cur_slice->ppv_map_ref_idx_to_poc = (volatile void **)pu1_buf; |
| } |
| u1_mbaff = ps_slice->u1_mbaff_frame_flag; |
| ps_dec->ps_cur_slice->u2_first_mb_in_slice = ps_dec->u2_total_mbs_coded >> u1_mbaff; |
| ps_dec->ps_cur_slice->i1_slice_alpha_c0_offset = 0; |
| ps_dec->ps_cur_slice->i1_slice_beta_offset = 0; |
| |
| if(ps_dec->ps_cur_slice->u1_field_pic_flag) |
| ps_dec->u2_prv_frame_num = ps_dec->ps_cur_slice->u2_frame_num; |
| |
| ps_dec->ps_parse_cur_slice->u4_first_mb_in_slice = ps_dec->u2_total_mbs_coded >> u1_mbaff; |
| ps_dec->ps_parse_cur_slice->u2_log2Y_crwd = ps_dec->ps_cur_slice->u2_log2Y_crwd; |
| |
| |
| if(ps_dec->u1_separate_parse) |
| { |
| ps_dec->ps_parse_cur_slice->pv_tu_coeff_data_start = ps_dec->pv_parse_tu_coeff_data; |
| } |
| else |
| { |
| ps_dec->pv_proc_tu_coeff_data = ps_dec->pv_parse_tu_coeff_data; |
| } |
| |
| /******************************************************/ |
| /* Initializations specific to P slice */ |
| /******************************************************/ |
| u1_inter_mb_type = P_MB; |
| u1_deblk_mb_type = D_INTER_MB; |
| |
| ps_dec->ps_cur_slice->u1_slice_type = P_SLICE; |
| ps_dec->ps_parse_cur_slice->slice_type = P_SLICE; |
| ps_dec->pf_mvpred_ref_tfr_nby2mb = ih264d_mv_pred_ref_tfr_nby2_pmb; |
| ps_dec->ps_part = ps_dec->ps_parse_part_params; |
| ps_dec->u2_mbx = |
| (MOD(ps_dec->ps_cur_slice->u2_first_mb_in_slice - 1, ps_dec->u2_frm_wd_in_mbs)); |
| ps_dec->u2_mby = |
| (DIV(ps_dec->ps_cur_slice->u2_first_mb_in_slice - 1, ps_dec->u2_frm_wd_in_mbs)); |
| ps_dec->u2_mby <<= u1_mbaff; |
| |
| /******************************************************/ |
| /* Parsing / decoding the slice */ |
| /******************************************************/ |
| ps_dec->u1_slice_header_done = 2; |
| ps_dec->u1_qp = ps_slice->u1_slice_qp; |
| ih264d_update_qp(ps_dec, 0); |
| u1_mb_idx = ps_dec->u1_mb_idx; |
| ps_parse_mb_data = ps_dec->ps_parse_mb_data; |
| u1_num_mbs = u1_mb_idx; |
| |
| u1_slice_end = 0; |
| u1_tfr_n_mb = 0; |
| u1_decode_nmb = 0; |
| u1_num_mbsNby2 = 0; |
| i2_cur_mb_addr = ps_dec->u2_total_mbs_coded; |
| i2_mb_skip_run = num_mb_skip; |
| |
| while(!u1_slice_end) |
| { |
| UWORD8 u1_mb_type; |
| |
| if(i2_cur_mb_addr > ps_dec->ps_cur_sps->u2_max_mb_addr) |
| break; |
| |
| ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs; |
| ps_dec->u4_num_mbs_cur_nmb = u1_num_mbs; |
| |
| ps_cur_mb_info->u1_Mux = 0; |
| ps_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff); |
| ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs; |
| |
| ps_cur_mb_info->u1_end_of_slice = 0; |
| |
| /* Storing Default partition info */ |
| ps_parse_mb_data->u1_num_part = 1; |
| ps_parse_mb_data->u1_isI_mb = 0; |
| |
| /**************************************************************/ |
| /* Get the required information for decoding of MB */ |
| /**************************************************************/ |
| /* mb_x, mb_y, neighbor availablity, */ |
| if (u1_mbaff) |
| ih264d_get_mb_info_cavlc_mbaff(ps_dec, i2_cur_mb_addr, ps_cur_mb_info, i2_mb_skip_run); |
| else |
| ih264d_get_mb_info_cavlc_nonmbaff(ps_dec, i2_cur_mb_addr, ps_cur_mb_info, i2_mb_skip_run); |
| |
| /* Set the deblocking parameters for this MB */ |
| if(ps_dec->u4_app_disable_deblk_frm == 0) |
| { |
| ih264d_set_deblocking_parameters(ps_cur_deblk_mb, ps_slice, |
| ps_dec->u1_mb_ngbr_availablity, |
| ps_dec->u1_cur_mb_fld_dec_flag); |
| } |
| |
| /* Set appropriate flags in ps_cur_mb_info and ps_dec */ |
| ps_dec->i1_prev_mb_qp_delta = 0; |
| ps_dec->u1_sub_mb_num = 0; |
| ps_cur_mb_info->u1_mb_type = MB_SKIP; |
| ps_cur_mb_info->u1_mb_mc_mode = PRED_16x16; |
| ps_cur_mb_info->u1_cbp = 0; |
| |
| /* Storing Skip partition info */ |
| ps_part_info = ps_dec->ps_part; |
| ps_part_info->u1_is_direct = PART_DIRECT_16x16; |
| ps_part_info->u1_sub_mb_num = 0; |
| ps_dec->ps_part++; |
| |
| /* Update Nnzs */ |
| ih264d_update_nnz_for_skipmb(ps_dec, ps_cur_mb_info, CAVLC); |
| |
| ps_cur_mb_info->ps_curmb->u1_mb_type = u1_inter_mb_type; |
| ps_cur_deblk_mb->u1_mb_type |= u1_deblk_mb_type; |
| |
| i2_mb_skip_run--; |
| |
| ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp; |
| |
| if (u1_mbaff) |
| { |
| ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info); |
| } |
| |
| /**************************************************************/ |
| /* Get next Macroblock address */ |
| /**************************************************************/ |
| i2_cur_mb_addr++; |
| |
| u1_num_mbs++; |
| u1_num_mbsNby2++; |
| ps_parse_mb_data++; |
| |
| /****************************************************************/ |
| /* Check for End Of Row and other flags that determine when to */ |
| /* do DMA setup for N/2-Mb, Decode for N-Mb, and Transfer for */ |
| /* N-Mb */ |
| /****************************************************************/ |
| u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec->u2_mbx - 1; |
| u1_end_of_row = (!u1_num_mbs_next) && (!(u1_mbaff && (u1_num_mbs & 0x01))); |
| u1_slice_end = !i2_mb_skip_run; |
| u1_tfr_n_mb = (u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row |
| || u1_slice_end; |
| u1_decode_nmb = u1_tfr_n_mb || u1_slice_end; |
| ps_cur_mb_info->u1_end_of_slice = u1_slice_end; |
| |
| if(u1_decode_nmb) |
| { |
| ps_dec->pf_mvpred_ref_tfr_nby2mb(ps_dec, u1_mb_idx, u1_num_mbs); |
| u1_num_mbsNby2 = 0; |
| |
| ps_parse_mb_data = ps_dec->ps_parse_mb_data; |
| ps_dec->ps_part = ps_dec->ps_parse_part_params; |
| |
| if(ps_dec->u1_separate_parse) |
| { |
| ih264d_parse_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, |
| u1_num_mbs_next, u1_tfr_n_mb, u1_end_of_row); |
| ps_dec->ps_nmb_info += u1_num_mbs; |
| } |
| else |
| { |
| ih264d_decode_recon_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, u1_num_mbs_next, |
| u1_tfr_n_mb, u1_end_of_row); |
| } |
| ps_dec->u2_total_mbs_coded += u1_num_mbs; |
| if(u1_tfr_n_mb) |
| u1_num_mbs = 0; |
| u1_mb_idx = u1_num_mbs; |
| ps_dec->u1_mb_idx = u1_num_mbs; |
| } |
| } |
| |
| ps_dec->u4_num_mbs_cur_nmb = 0; |
| ps_dec->ps_cur_slice->u4_mbs_in_slice = i2_cur_mb_addr |
| - ps_dec->ps_parse_cur_slice->u4_first_mb_in_slice; |
| |
| H264_DEC_DEBUG_PRINT("Mbs in slice: %d\n", ps_dec->ps_cur_slice->u4_mbs_in_slice); |
| |
| |
| /* incremented here only if first slice is inserted */ |
| if(ps_dec->u4_first_slice_in_pic != 0) |
| { |
| ps_dec->ps_parse_cur_slice++; |
| ps_dec->u2_cur_slice_num++; |
| } |
| |
| ps_dec->i2_prev_slice_mbx = ps_dec->u2_mbx; |
| ps_dec->i2_prev_slice_mby = ps_dec->u2_mby; |
| |
| if(ps_dec->u2_total_mbs_coded |
| >= ps_dec->u2_frm_ht_in_mbs * ps_dec->u2_frm_wd_in_mbs) |
| { |
| ps_dec->u1_pic_decode_done = 1; |
| } |
| |
| return 0; |
| |
| } |
| |
| /*! |
| ************************************************************************** |
| * \if Function name : ih264d_decode_pslice \endif |
| * |
| * \brief |
| * Decodes a P Slice |
| * |
| * |
| * \return |
| * 0 on Success and Error code otherwise |
| ************************************************************************** |
| */ |
| WORD32 ih264d_parse_pslice(dec_struct_t *ps_dec, UWORD16 u2_first_mb_in_slice) |
| { |
| dec_pic_params_t * ps_pps = ps_dec->ps_cur_pps; |
| dec_slice_params_t * ps_cur_slice = ps_dec->ps_cur_slice; |
| dec_bit_stream_t *ps_bitstrm = ps_dec->ps_bitstrm; |
| UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; |
| UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst; |
| UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag; //ps_dec->ps_cur_sps->u1_mb_aff_flag; |
| UWORD8 u1_field_pic_flag = ps_cur_slice->u1_field_pic_flag; |
| |
| UWORD32 u4_temp; |
| WORD32 i_temp; |
| WORD32 ret; |
| |
| /*--------------------------------------------------------------------*/ |
| /* Read remaining contents of the slice header */ |
| /*--------------------------------------------------------------------*/ |
| { |
| WORD8 *pi1_buf; |
| WORD16 *pi2_mv = ps_dec->s_default_mv_pred.i2_mv; |
| WORD32 *pi4_mv = (WORD32*)pi2_mv; |
| WORD16 *pi16_refFrame; |
| |
| pi1_buf = ps_dec->s_default_mv_pred.i1_ref_frame; |
| pi16_refFrame = (WORD16*)pi1_buf; |
| *pi4_mv = 0; |
| *(pi4_mv + 1) = 0; |
| *pi16_refFrame = OUT_OF_RANGE_REF; |
| ps_dec->s_default_mv_pred.u1_col_ref_pic_idx = (UWORD8)-1; |
| ps_dec->s_default_mv_pred.u1_pic_type = (UWORD8)-1; |
| } |
| |
| ps_cur_slice->u1_num_ref_idx_active_override_flag = ih264d_get_bit_h264( |
| ps_bitstrm); |
| |
| COPYTHECONTEXT("SH: num_ref_idx_override_flag", |
| ps_cur_slice->u1_num_ref_idx_active_override_flag); |
| |
| u4_temp = ps_dec->ps_cur_pps->u1_num_ref_idx_lx_active[0]; |
| if(ps_cur_slice->u1_num_ref_idx_active_override_flag) |
| { |
| u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf) + 1; |
| } |
| |
| { |
| |
| |
| |
| UWORD8 u1_max_ref_idx = MAX_FRAMES << u1_field_pic_flag; |
| if(u4_temp > u1_max_ref_idx || u4_temp < 1) |
| { |
| return ERROR_NUM_REF; |
| } |
| ps_cur_slice->u1_num_ref_idx_lx_active[0] = u4_temp; |
| COPYTHECONTEXT("SH: num_ref_idx_l0_active_minus1", |
| ps_cur_slice->u1_num_ref_idx_lx_active[0] - 1); |
| |
| } |
| |
| { |
| UWORD8 uc_refIdxReFlagL0 = ih264d_get_bit_h264(ps_bitstrm); |
| COPYTHECONTEXT("SH: ref_pic_list_reordering_flag_l0",uc_refIdxReFlagL0); |
| |
| ih264d_init_ref_idx_lx_p(ps_dec); |
| /* Store the value for future slices in the same picture */ |
| ps_dec->u1_num_ref_idx_lx_active_prev = |
| ps_cur_slice->u1_num_ref_idx_lx_active[0]; |
| |
| /* Modified temporarily */ |
| if(uc_refIdxReFlagL0) |
| { |
| WORD8 ret; |
| ps_dec->ps_ref_pic_buf_lx[0] = ps_dec->ps_dpb_mgr->ps_mod_dpb[0]; |
| ret = ih264d_ref_idx_reordering(ps_dec, 0); |
| if(ret == -1) |
| return ERROR_REFIDX_ORDER_T; |
| ps_dec->ps_ref_pic_buf_lx[0] = ps_dec->ps_dpb_mgr->ps_mod_dpb[0]; |
| } |
| else |
| ps_dec->ps_ref_pic_buf_lx[0] = |
| ps_dec->ps_dpb_mgr->ps_init_dpb[0]; |
| } |
| /* Create refIdx to POC mapping */ |
| { |
| void **pui_map_ref_idx_to_poc_lx0, **pui_map_ref_idx_to_poc_lx1; |
| WORD8 idx; |
| struct pic_buffer_t *ps_pic; |
| |
| pui_map_ref_idx_to_poc_lx0 = ps_dec->ppv_map_ref_idx_to_poc + FRM_LIST_L0; |
| pui_map_ref_idx_to_poc_lx0[0] = 0; //For ref_idx = -1 |
| pui_map_ref_idx_to_poc_lx0++; |
| for(idx = 0; idx < ps_cur_slice->u1_num_ref_idx_lx_active[0]; idx++) |
| { |
| ps_pic = ps_dec->ps_ref_pic_buf_lx[0][idx]; |
| pui_map_ref_idx_to_poc_lx0[idx] = (ps_pic->pu1_buf1); |
| } |
| |
| /* Bug Fix Deblocking */ |
| pui_map_ref_idx_to_poc_lx1 = ps_dec->ppv_map_ref_idx_to_poc + FRM_LIST_L1; |
| pui_map_ref_idx_to_poc_lx1[0] = 0; |
| |
| if(u1_mbaff) |
| { |
| void **ppv_map_ref_idx_to_poc_lx_t, **ppv_map_ref_idx_to_poc_lx_b; |
| void **ppv_map_ref_idx_to_poc_lx_t1, **ppv_map_ref_idx_to_poc_lx_b1; |
| ppv_map_ref_idx_to_poc_lx_t = ps_dec->ppv_map_ref_idx_to_poc |
| + TOP_LIST_FLD_L0; |
| ppv_map_ref_idx_to_poc_lx_b = ps_dec->ppv_map_ref_idx_to_poc |
| + BOT_LIST_FLD_L0; |
| |
| ppv_map_ref_idx_to_poc_lx_t[0] = 0; // For ref_idx = -1 |
| ppv_map_ref_idx_to_poc_lx_t++; |
| ppv_map_ref_idx_to_poc_lx_b[0] = 0; // For ref_idx = -1 |
| ppv_map_ref_idx_to_poc_lx_b++; |
| |
| idx = 0; |
| for(idx = 0; idx < ps_cur_slice->u1_num_ref_idx_lx_active[0]; idx++) |
| { |
| ps_pic = ps_dec->ps_ref_pic_buf_lx[0][idx]; |
| ppv_map_ref_idx_to_poc_lx_t[0] = (ps_pic->pu1_buf1); |
| ppv_map_ref_idx_to_poc_lx_b[1] = (ps_pic->pu1_buf1); |
| |
| ppv_map_ref_idx_to_poc_lx_b[0] = (ps_pic->pu1_buf1) + 1; |
| ppv_map_ref_idx_to_poc_lx_t[1] = (ps_pic->pu1_buf1) + 1; |
| |
| ppv_map_ref_idx_to_poc_lx_t += 2; |
| ppv_map_ref_idx_to_poc_lx_b += 2; |
| } |
| ppv_map_ref_idx_to_poc_lx_t1 = ps_dec->ppv_map_ref_idx_to_poc |
| + TOP_LIST_FLD_L1; |
| ppv_map_ref_idx_to_poc_lx_t1[0] = 0; |
| ppv_map_ref_idx_to_poc_lx_b1 = ps_dec->ppv_map_ref_idx_to_poc |
| + BOT_LIST_FLD_L1; |
| ppv_map_ref_idx_to_poc_lx_b1[0] = 0; |
| |
| } |
| |
| if(ps_dec->u4_num_cores >= 3) |
| { |
| WORD32 num_entries; |
| WORD32 size; |
| |
| num_entries = MAX_FRAMES; |
| if((1 >= ps_dec->ps_cur_sps->u1_num_ref_frames) && |
| (0 == ps_dec->i4_display_delay)) |
| { |
| num_entries = 1; |
| } |
| num_entries = ((2 * num_entries) + 1); |
| num_entries *= 2; |
| |
| size = num_entries * sizeof(void *); |
| size += PAD_MAP_IDX_POC * sizeof(void *); |
| |
| memcpy((void *)ps_dec->ps_parse_cur_slice->ppv_map_ref_idx_to_poc, |
| ps_dec->ppv_map_ref_idx_to_poc, |
| size); |
| } |
| |
| |
| } |
| if(ps_pps->u1_wted_pred_flag) |
| { |
| ret = ih264d_parse_pred_weight_table(ps_cur_slice, ps_bitstrm); |
| if(ret != OK) |
| return ret; |
| ih264d_form_pred_weight_matrix(ps_dec); |
| ps_dec->pu4_wt_ofsts = ps_dec->pu4_wts_ofsts_mat; |
| } |
| else |
| { |
| ps_dec->ps_cur_slice->u2_log2Y_crwd = 0; |
| ps_dec->pu4_wt_ofsts = ps_dec->pu4_wts_ofsts_mat; |
| } |
| |
| ps_dec->ps_parse_cur_slice->u2_log2Y_crwd = |
| ps_dec->ps_cur_slice->u2_log2Y_crwd; |
| |
| if(u1_mbaff && (u1_field_pic_flag == 0)) |
| { |
| ih264d_convert_frm_mbaff_list(ps_dec); |
| } |
| |
| /* G050 */ |
| if(ps_cur_slice->u1_nal_ref_idc != 0) |
| { |
| if(!ps_dec->ps_dpb_cmds->u1_dpb_commands_read) |
| { |
| i_temp = ih264d_read_mmco_commands(ps_dec); |
| if (i_temp < 0) |
| { |
| return ERROR_DBP_MANAGER_T; |
| } |
| ps_dec->u4_bitoffset = i_temp; |
| } |
| else |
| ps_bitstrm->u4_ofst += ps_dec->u4_bitoffset; |
| |
| } |
| /* G050 */ |
| |
| if(ps_pps->u1_entropy_coding_mode == CABAC) |
| { |
| u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); |
| |
| if(u4_temp > MAX_CABAC_INIT_IDC) |
| { |
| return ERROR_INV_SLICE_HDR_T; |
| } |
| ps_cur_slice->u1_cabac_init_idc = u4_temp; |
| COPYTHECONTEXT("SH: cabac_init_idc",ps_cur_slice->u1_cabac_init_idc); |
| } |
| |
| /* Read slice_qp_delta */ |
| i_temp = ps_pps->u1_pic_init_qp |
| + ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf); |
| if((i_temp < 0) || (i_temp > 51)) |
| { |
| return ERROR_INV_RANGE_QP_T; |
| } |
| ps_cur_slice->u1_slice_qp = i_temp; |
| COPYTHECONTEXT("SH: slice_qp_delta", |
| (WORD8)(ps_cur_slice->u1_slice_qp - ps_pps->u1_pic_init_qp)); |
| |
| if(ps_pps->u1_deblocking_filter_parameters_present_flag == 1) |
| { |
| u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); |
| if(u4_temp > SLICE_BOUNDARY_DBLK_DISABLED) |
| { |
| return ERROR_INV_SLICE_HDR_T; |
| } |
| |
| COPYTHECONTEXT("SH: disable_deblocking_filter_idc", u4_temp); |
| ps_cur_slice->u1_disable_dblk_filter_idc = u4_temp; |
| if(u4_temp != 1) |
| { |
| i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) |
| << 1; |
| if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF)) |
| { |
| return ERROR_INV_SLICE_HDR_T; |
| } |
| ps_cur_slice->i1_slice_alpha_c0_offset = i_temp; |
| COPYTHECONTEXT("SH: slice_alpha_c0_offset_div2", |
| ps_cur_slice->i1_slice_alpha_c0_offset >> 1); |
| |
| i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) |
| << 1; |
| if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF)) |
| { |
| return ERROR_INV_SLICE_HDR_T; |
| } |
| ps_cur_slice->i1_slice_beta_offset = i_temp; |
| COPYTHECONTEXT("SH: slice_beta_offset_div2", |
| ps_cur_slice->i1_slice_beta_offset >> 1); |
| } |
| else |
| { |
| ps_cur_slice->i1_slice_alpha_c0_offset = 0; |
| ps_cur_slice->i1_slice_beta_offset = 0; |
| } |
| } |
| else |
| { |
| ps_cur_slice->u1_disable_dblk_filter_idc = 0; |
| ps_cur_slice->i1_slice_alpha_c0_offset = 0; |
| ps_cur_slice->i1_slice_beta_offset = 0; |
| } |
| |
| ps_dec->u1_slice_header_done = 2; |
| |
| if(ps_pps->u1_entropy_coding_mode) |
| { |
| SWITCHOFFTRACE; SWITCHONTRACECABAC; |
| ps_dec->pf_parse_inter_slice = ih264d_parse_inter_slice_data_cabac; |
| ps_dec->pf_parse_inter_mb = ih264d_parse_pmb_cabac; |
| ih264d_init_cabac_contexts(P_SLICE, ps_dec); |
| |
| if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag) |
| ps_dec->pf_get_mb_info = ih264d_get_mb_info_cabac_mbaff; |
| else |
| ps_dec->pf_get_mb_info = ih264d_get_mb_info_cabac_nonmbaff; |
| } |
| else |
| { |
| SWITCHONTRACE; SWITCHOFFTRACECABAC; |
| ps_dec->pf_parse_inter_slice = ih264d_parse_inter_slice_data_cavlc; |
| ps_dec->pf_parse_inter_mb = ih264d_parse_pmb_cavlc; |
| if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag) |
| { |
| ps_dec->pf_get_mb_info = ih264d_get_mb_info_cavlc_mbaff; |
| } |
| else |
| ps_dec->pf_get_mb_info = ih264d_get_mb_info_cavlc_nonmbaff; |
| } |
| |
| ps_dec->u1_B = 0; |
| ps_dec->pf_mvpred_ref_tfr_nby2mb = ih264d_mv_pred_ref_tfr_nby2_pmb; |
| ret = ps_dec->pf_parse_inter_slice(ps_dec, ps_cur_slice, u2_first_mb_in_slice); |
| if(ret != OK) |
| return ret; |
| // ps_dec->curr_slice_in_error = 0 ; |
| return OK; |
| } |