/****************************************************************************** * * Copyright (C) 2022 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 * isvcd_parse_epslice.c * * @brief * Contains routines that decode a EP slice type * * @author * Kishore * * @par List of Functions: * - isvcd_parse_epslice() * - isvcd_parse_inter_slice_data_cabac() * - isvcd_parse_inter_slice_data_cabac_enh_lyr() * - isvcd_parse_inter_slice_data_cavlc_enh_lyr() * - isvcd_parse_pmb_cabac() * - isvcd_parse_pmb_cavlc() * - isvcd_mark_err_slice_skip() * - isvcd_parse_interlayer_resamp_func_init() * - isvcd_parse_pslice() * * @remarks * None * ******************************************************************************* */ #include #include "ih264_defs.h" #include "ih264d_bitstrm.h" #include "ih264d_defs.h" #include "ih264d_debug.h" #include "ih264d_tables.h" #include "isvcd_structs.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_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" #include "ih264d_parse_headers.h" #include "isvcd_parse_headers.h" #include "isvcd_process_epslice.h" #include "isvcd_mode_mv_resamp.h" #include "isvcd_parse_slice.h" #include "isvcd_parse_cavlc.h" #include "isvcd_mb_utils.h" void ih264d_init_cabac_contexts(UWORD8 u1_slice_type, dec_struct_t *ps_dec); void isvcd_init_cabac_contexts(UWORD8 u1_slice_type, dec_struct_t *ps_dec); /*! ************************************************************************** * \if Function name : isvcd_parse_epslice \endif * * \brief * Decodes a EP Slice * * * \return * 0 on Success and Error code otherwise ************************************************************************** */ WORD32 isvcd_parse_epslice(svc_dec_lyr_struct_t *ps_svc_lyr_dec, UWORD16 u2_first_mb_in_slice) { dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec; WORD32 i_status = OK; 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; dec_seq_params_t *ps_seq; dec_svc_seq_params_t *ps_subset_seq; dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL; dec_subset_seq_params_t *ps_sps_svc_ext = NULL; dec_nal_unit_svc_ext_params_t *ps_nal_svc_ext = NULL; 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; UWORD8 u1_field_pic_flag = ps_cur_slice->u1_field_pic_flag; UWORD64 u8_ref_idx_l0; UWORD32 u4_temp; WORD32 i_temp; WORD32 ret; WORD64 i8_temp; ps_nal_svc_ext = ps_svc_lyr_dec->ps_nal_svc_ext; ps_seq = ps_pps->ps_sps; ps_seq += MAX_NUM_SEQ_PARAMS; ps_subset_seq = &ps_svc_lyr_dec->ps_subset_sps[MAX_NUM_SEQ_PARAMS + ps_seq->u1_seq_parameter_set_id]; ps_sps_svc_ext = &ps_subset_seq->s_sps_svc_ext; ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params; /*--------------------------------------------------------------------*/ /* 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; } if(0 == ps_svc_lyr_dec->ps_nal_svc_ext->u1_quality_id) { ps_cur_slice->u1_num_ref_idx_active_override_flag = ih264d_get_bit_h264(ps_bitstrm); COPYTHECONTEXT("Slice Header SVC ext: num_ref_idx_override_flag", ps_cur_slice->u1_num_ref_idx_active_override_flag); u8_ref_idx_l0 = ps_dec->ps_cur_pps->u1_num_ref_idx_lx_active[0]; if(ps_cur_slice->u1_num_ref_idx_active_override_flag) { u8_ref_idx_l0 = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf) + (UWORD64) 1; } { UWORD8 u1_max_ref_idx = H264_MAX_REF_PICS << u1_field_pic_flag; if(u8_ref_idx_l0 > u1_max_ref_idx) { return ERROR_NUM_REF; } ps_cur_slice->u1_num_ref_idx_lx_active[0] = (UWORD8) u8_ref_idx_l0; COPYTHECONTEXT("Slice Header SVC ext: 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("Slice Header SVC ext: 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; 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; ppv_map_ref_idx_to_poc_lx_t++; ppv_map_ref_idx_to_poc_lx_b[0] = 0; 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; } /* BS is moved post recon gen in libsvc*/ if(ps_dec->u4_num_cores >= 2) { 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) { if(!ps_nal_svc_ext->u1_no_inter_layer_pred_flag) { ps_svc_slice_params->u1_base_pred_weight_table_flag = ih264d_get_bit_h264(ps_bitstrm); COPYTHECONTEXT("Slice Header SVC ext: u1_base_pred_weight_table_flag", ps_svc_slice_params->u1_base_pred_weight_table_flag); } if(ps_nal_svc_ext->u1_no_inter_layer_pred_flag || !ps_svc_slice_params->u1_base_pred_weight_table_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) { dec_pic_params_t *ps_pps = ps_dec->ps_cur_pps; dec_seq_params_t *ps_sps_tmp = ps_pps->ps_sps; UWORD8 u1_nal_unit_type_tmp = ps_dec->u1_nal_unit_type; ps_pps->ps_sps = ps_dec->ps_cur_sps; if(ps_svc_lyr_dec->ps_nal_svc_ext->u1_idr_flag) ps_dec->u1_nal_unit_type = IDR_SLICE_NAL; i_temp = ih264d_read_mmco_commands(ps_dec); ps_pps->ps_sps = ps_sps_tmp; ps_dec->u1_nal_unit_type = u1_nal_unit_type_tmp; if(i_temp < 0) { return ERROR_DBP_MANAGER_T; } ps_dec->u4_bitoffset = i_temp; } else ps_bitstrm->u4_ofst += ps_dec->u4_bitoffset; if(!ps_sps_svc_ext->u1_slice_header_restriction_flag) { ps_svc_slice_params->u1_store_ref_base_pic_flag = ih264d_get_bit_h264(ps_bitstrm); COPYTHECONTEXT("SPS_SVC_EXT: u1_store_ref_base_pic_flag", ps_svc_slice_params->u1_store_ref_base_pic_flag); if(0 != ps_svc_slice_params->u1_store_ref_base_pic_flag) { return NOT_OK; } if(((1 == ps_nal_svc_ext->u1_use_ref_base_pic_flag) || (1 == ps_svc_slice_params->u1_store_ref_base_pic_flag)) && (!ps_nal_svc_ext->u1_idr_flag)) { i_status = isvcd_dec_ref_base_pic_marking( &ps_svc_slice_params->s_ref_base_pic_marking_svc_ext, ps_bitstrm); if(i_status != OK) { return i_status; } } } } } /* 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("Slice Header SVC ext: cabac_init_idc", ps_cur_slice->u1_cabac_init_idc); } /* Read slice_qp_delta */ i8_temp = (WORD64) ps_pps->u1_pic_init_qp + ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf); if((i8_temp < MIN_H264_QP) || (i8_temp > MAX_H264_QP)) { return ERROR_INV_RANGE_QP_T; } ps_cur_slice->u1_slice_qp = (UWORD8) i8_temp; COPYTHECONTEXT("Slice Header SVC ext: 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("Slice Header SVC ext: 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("Slice Header SVC ext: 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("Slice Header SVC ext: 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; } /* add the remaining part of the code for svc extension from reference */ ret = isvcd_set_default_slice_header_ext(ps_svc_lyr_dec); if(ret != OK) { return ERROR_INV_SLICE_HDR_T; } ret = isvcd_parse_slice_header(ps_svc_lyr_dec); if(ret != OK) { return ERROR_INV_SLICE_HDR_T; } ps_dec->u1_slice_header_done = 2; if(!ps_svc_slice_params->u1_slice_skip_flag) { if(ps_pps->u1_entropy_coding_mode) { SWITCHOFFTRACE; SWITCHONTRACECABAC; ps_svc_lyr_dec->pf_parse_inter_slice_svc_ext = isvcd_parse_inter_slice_data_cabac_enh_lyr; ps_svc_lyr_dec->pf_parse_inter_mb_svc_ext = isvcd_parse_pmb_cabac; isvcd_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 = isvcd_get_mb_info_cabac_nonmbaff; } else { SWITCHONTRACE; SWITCHOFFTRACECABAC; ps_svc_lyr_dec->pf_parse_inter_slice_svc_ext = isvcd_parse_inter_slice_data_cavlc_enh_lyr; ps_svc_lyr_dec->pf_parse_inter_mb_svc_ext = isvcd_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 = isvcd_get_mb_info_cavlc_nonmbaff; } } else { return ERROR_FEATURE_UNAVAIL; } ps_dec->u1_B = 0; ps_dec->pf_mvpred_ref_tfr_nby2mb = isvcd_mv_pred_ref_tfr_nby2_epmb; ret = ps_svc_lyr_dec->pf_parse_inter_slice_svc_ext(ps_svc_lyr_dec, ps_cur_slice, u2_first_mb_in_slice); if(ret != OK) return ret; return OK; } /*****************************************************************************/ /* */ /* Function Name : isvcd_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 : */ /* */ /* Revision History: */ /* */ /* DD MM YYYY Author(s) Changes (Describe the changes made) */ /* 13 07 2002 Jay Draft */ /* */ /*****************************************************************************/ WORD32 isvcd_parse_inter_slice_data_cabac(svc_dec_lyr_struct_t *ps_svc_lyr_dec, dec_slice_params_t *ps_slice, UWORD16 u2_first_mb_in_slice) { dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec; 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; if(ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER) { ps_cur_deblk_mb->u1_deblocking_mode = MB_DISABLE_FILTERING; } } 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; if(ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER) { ps_cur_deblk_mb->u1_deblocking_mode = MB_DISABLE_FILTERING; } } 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(ps_dec->u1_enable_mb_info) { ih264d_populate_mb_info_map(ps_dec, ps_cur_mb_info, ps_cur_mb_info->u2_mbx << 1, ps_cur_mb_info->u2_mby << 1, ps_cur_deblk_mb->u1_mb_qp); } 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; if(u1_decode_nmb) { ret = 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(ret != OK) return ret; } 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; ps_svc_lyr_dec->ps_svc_nmb_info += u1_num_mbs; } else { if(ps_svc_lyr_dec->u1_layer_identifier == TARGET_LAYER) { 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); } else { isvcd_decode_recon_tfr_nmb_base_lyr(ps_svc_lyr_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 : isvcd_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 : */ /* */ /* Revision History: */ /* */ /* DD MM YYYY Author(s) Changes (Describe the changes made) */ /* 13 07 2002 Jay Draft */ /* */ /*****************************************************************************/ WORD32 isvcd_parse_inter_slice_data_cavlc(svc_dec_lyr_struct_t *ps_svc_lyr_dec, dec_slice_params_t *ps_slice, UWORD16 u2_first_mb_in_slice) { dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec; 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; if(ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER) { ps_cur_deblk_mb->u1_deblocking_mode = MB_DISABLE_FILTERING; } 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; if(ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER) { ps_cur_deblk_mb->u1_deblocking_mode = MB_DISABLE_FILTERING; } } 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(ps_dec->u1_enable_mb_info) { ih264d_populate_mb_info_map(ps_dec, ps_cur_mb_info, ps_cur_mb_info->u2_mbx << 1, ps_cur_mb_info->u2_mby << 1, ps_cur_deblk_mb->u1_mb_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; if(u1_decode_nmb) { ret = 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(ret != OK) return ret; } 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; ps_svc_lyr_dec->ps_svc_nmb_info += u1_num_mbs; } else { if(ps_svc_lyr_dec->u1_layer_identifier == TARGET_LAYER) { 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); } else { isvcd_decode_recon_tfr_nmb_base_lyr(ps_svc_lyr_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 : isvcd_parse_inter_slice_data_cabac_enh_lyr */ /* */ /* Description : This function parses cabac syntax of a inter slice on */ /* N MB basis for svc ext */ /* */ /* 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 : */ /* */ /* Revision History: */ /* */ /* DD MM YYYY Author(s) Changes (Describe the changes made) */ /* 09 06 2021 Jay Draft */ /* */ /*****************************************************************************/ WORD32 isvcd_parse_inter_slice_data_cabac_enh_lyr(svc_dec_lyr_struct_t *ps_svc_lyr_dec, dec_slice_params_t *ps_slice, UWORD16 u2_first_mb_in_slice) { dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec; 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; dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL; deblk_mb_t *ps_cur_deblk_mb; dec_mb_info_t *ps_cur_mb_info; dec_svc_mb_info_t *ps_svc_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; decoding_envirnoment_t *ps_cab_env = NULL; WORD32 ret = OK; ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params; /******************************************************/ /* 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 // EB_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_cab_env = &ps_dec->s_cab_dec_env; 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_svc_cur_mb_info = ps_svc_lyr_dec->ps_svc_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); ps_svc_cur_mb_info->u1_crop_window_flag = *(ps_svc_lyr_dec->pu1_crop_wnd_flag + ps_cur_mb_info->u2_mbx + (ps_cur_mb_info->u2_mby * ps_dec->u2_frm_wd_in_mbs)); /*********************************************************************/ /* 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; ps_svc_cur_mb_info->u1_base_mode_flag = 0; ps_svc_cur_mb_info->au1_motion_pred_flag[0] = 0; ps_svc_cur_mb_info->au1_motion_pred_flag[1] = 0; ps_svc_cur_mb_info->u1_residual_prediction_flag = 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; if(ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER) { ps_cur_deblk_mb->u1_deblocking_mode = MB_DISABLE_FILTERING; } } else { /* Variables for handling Cabac contexts */ UWORD8 *pu1_cur_svc_base_mode_flag; UWORD8 u1_left_svc_base_mode_flag; UWORD8 u1_top_svc_base_mode_flag; UWORD32 u4_a, u4_b, u4_ctxt_inc; ps_svc_cur_mb_info->u1_base_mode_flag = 0; /* Macroblock Layer Begins */ if(ps_svc_cur_mb_info->u1_crop_window_flag && ps_svc_slice_params->u1_adaptive_base_mode_flag) { pu1_cur_svc_base_mode_flag = ps_svc_lyr_dec->pu1_svc_base_mode_flag + ps_cur_mb_info->u2_mbx; pu1_cur_svc_base_mode_flag += ps_cur_mb_info->u2_mby * ps_svc_lyr_dec->i4_frm_svc_base_mode_cabac_stride; u1_left_svc_base_mode_flag = 0; if(ps_dec->u1_mb_ngbr_availablity & LEFT_MB_AVAILABLE_MASK) u1_left_svc_base_mode_flag = *(pu1_cur_svc_base_mode_flag - 1); u1_top_svc_base_mode_flag = 0; if(ps_dec->u1_mb_ngbr_availablity & TOP_MB_AVAILABLE_MASK) u1_top_svc_base_mode_flag = *(pu1_cur_svc_base_mode_flag - ps_svc_lyr_dec->i4_frm_svc_base_mode_cabac_stride); u4_a = 1; u4_b = 1; if(u1_top_svc_base_mode_flag) { u4_a = 0; } if(u1_left_svc_base_mode_flag) { u4_b = 0; } u4_ctxt_inc = u4_a + u4_b; ps_svc_cur_mb_info->u1_base_mode_flag = ih264d_decode_bin( u4_ctxt_inc, ps_svc_lyr_dec->ps_base_mode_flag, ps_bitstrm, ps_cab_env); COPYTHECONTEXT("SVC ext: u1_base_mode_flag", ps_svc_cur_mb_info->u1_base_mode_flag); *pu1_cur_svc_base_mode_flag = ps_svc_cur_mb_info->u1_base_mode_flag; } else if(ps_svc_cur_mb_info->u1_crop_window_flag) { ps_svc_cur_mb_info->u1_base_mode_flag = ps_svc_slice_params->u1_default_base_mode_flag; } if(!ps_svc_cur_mb_info->u1_base_mode_flag) { /* 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; COPYTHECONTEXT("u1_mb_type", u1_mb_type); } else { // default intialization for Base mode flag : reserved ps_dec->ps_part += MAX_NUM_MB_PART; ps_svc_cur_mb_info->au1_motion_pred_flag[0] = 0; ps_svc_cur_mb_info->au1_motion_pred_flag[1] = 0; ps_cur_mb_info->u1_mb_type = MB_INFER; ps_cur_deblk_mb->u1_mb_type |= u1_deblk_mb_type; if(ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER) { ps_cur_deblk_mb->u1_deblocking_mode = MB_DISABLE_FILTERING; } /*SVC EXT needs to update incropwindow*/ if(ps_svc_slice_params->u1_adaptive_residual_prediction_flag && ps_svc_cur_mb_info->u1_crop_window_flag) { ps_svc_cur_mb_info->u1_residual_prediction_flag = ih264d_decode_bin( 0, ps_svc_lyr_dec->ps_residual_prediction_flag, ps_bitstrm, ps_cab_env); COPYTHECONTEXT("SVC ext: u1_residual_prediction_flag", ps_svc_cur_mb_info->u1_residual_prediction_flag); } else { /*residual flag inference code */ if(1 == ps_svc_cur_mb_info->u1_crop_window_flag) { ps_svc_cur_mb_info->u1_residual_prediction_flag = ps_svc_slice_params->u1_default_residual_prediction_flag; } else { ps_svc_cur_mb_info->u1_residual_prediction_flag = 0; } } } /* Parse Macroblock Data */ u1_mb_type = ps_cur_mb_info->u1_mb_type; 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_svc_lyr_dec->pf_parse_inter_mb_svc_ext( ps_svc_lyr_dec, ps_cur_mb_info, ps_svc_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; if(ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER) { ps_cur_deblk_mb->u1_deblocking_mode = MB_DISABLE_FILTERING; } } 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; ps_cur_deblk_mb->u1_mb_type |= D_INTRA_MB; } 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 = isvcd_parse_imb_cabac(ps_svc_lyr_dec, ps_cur_mb_info, ps_svc_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; if(0 == ps_svc_cur_mb_info->u1_base_mode_flag) { ps_cur_deblk_mb->u1_mb_type |= D_INTRA_MB; } } ps_parse_mb_data->u1_isI_mb = !ps_svc_cur_mb_info->u1_base_mode_flag; } } if(ps_dec->u1_enable_mb_info) { ih264d_populate_mb_info_map(ps_dec, ps_cur_mb_info, ps_cur_mb_info->u2_mbx << 1, ps_cur_mb_info->u2_mby << 1, ps_cur_deblk_mb->u1_mb_qp); } 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; if(u1_decode_nmb) { ret = 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(ret != OK) return ret; } 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; ps_svc_lyr_dec->ps_svc_nmb_info += u1_num_mbs; } else { ret = isvcd_decode_recon_tfr_nmb_non_base_lyr(ps_svc_lyr_dec, u1_mb_idx, u1_num_mbs, u1_num_mbs_next, u1_tfr_n_mb, u1_end_of_row); if(ret != OK) return ret; } 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 : isvcd_parse_inter_slice_data_cavlc_enh_lyr */ /* */ /* 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 : */ /* */ /* Revision History: */ /* */ /* DD MM YYYY Author(s) Changes (Describe the changes made) */ /* 09 06 2021 Kishore Draft */ /* */ /*****************************************************************************/ WORD32 isvcd_parse_inter_slice_data_cavlc_enh_lyr(svc_dec_lyr_struct_t *ps_svc_lyr_dec, dec_slice_params_t *ps_slice, UWORD16 u2_first_mb_in_slice) { dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec; 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; dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL; deblk_mb_t *ps_cur_deblk_mb; dec_mb_info_t *ps_cur_mb_info; dec_svc_mb_info_t *ps_svc_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; ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params; /******************************************************/ /* Initialisations specific to EB or EP 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 { 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_svc_cur_mb_info = ps_svc_lyr_dec->ps_svc_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)) { 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); 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); ps_svc_cur_mb_info->u1_crop_window_flag = *(ps_svc_lyr_dec->pu1_crop_wnd_flag + ps_cur_mb_info->u2_mbx + (ps_cur_mb_info->u2_mby * ps_dec->u2_frm_wd_in_mbs)); /***************************************************************/ /* 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; ps_svc_cur_mb_info->u1_base_mode_flag = 0; ps_svc_cur_mb_info->au1_motion_pred_flag[0] = 0; ps_svc_cur_mb_info->au1_motion_pred_flag[1] = 0; ps_svc_cur_mb_info->u1_residual_prediction_flag = 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; if(ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER) { ps_cur_deblk_mb->u1_deblocking_mode = MB_DISABLE_FILTERING; } i2_mb_skip_run--; } else { UWORD32 u4_word, u4_ldz, u4_temp; ps_svc_cur_mb_info->u1_base_mode_flag = 0; if(ps_svc_cur_mb_info->u1_crop_window_flag && ps_svc_slice_params->u1_adaptive_base_mode_flag) { ps_svc_cur_mb_info->u1_base_mode_flag = ih264d_get_bit_h264(ps_bitstrm); COPYTHECONTEXT("SVC :u1_base_mode_flag", ps_cur_mb_info->u1_base_mode_flag); } else if(ps_svc_cur_mb_info->u1_crop_window_flag) { ps_svc_cur_mb_info->u1_base_mode_flag = ps_svc_slice_params->u1_default_base_mode_flag; } if(!ps_svc_cur_mb_info->u1_base_mode_flag) { UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst; u1_read_mb_type = 0; /**************************************************************/ /* Macroblock Layer Begins, Decode the u1_mb_type */ /**************************************************************/ { /***************************************************************/ /* 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); 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; } else { /* default intialization for Base mode flag : reserved */ ps_dec->ps_part += MAX_NUM_MB_PART; u1_read_mb_type = 0; ps_svc_cur_mb_info->au1_motion_pred_flag[0] = 0; ps_svc_cur_mb_info->au1_motion_pred_flag[1] = 0; ps_cur_mb_info->u1_mb_type = MB_INFER; ps_cur_deblk_mb->u1_mb_type |= u1_deblk_mb_type; if(ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER) { ps_cur_deblk_mb->u1_deblocking_mode = MB_DISABLE_FILTERING; } /*SVC EXT needs to update incropwindow*/ if(ps_svc_slice_params->u1_adaptive_residual_prediction_flag && ps_svc_cur_mb_info->u1_crop_window_flag) { ps_svc_cur_mb_info->u1_residual_prediction_flag = ih264d_get_bit_h264(ps_bitstrm); COPYTHECONTEXT("SVC ext: u1_residual_prediction_flag", ps_cur_mb_info->u1_residual_prediction_flag); } else { /*residual flag inference code */ if(1 == ps_svc_cur_mb_info->u1_crop_window_flag) { ps_svc_cur_mb_info->u1_residual_prediction_flag = ps_svc_slice_params->u1_default_residual_prediction_flag; } else { ps_svc_cur_mb_info->u1_residual_prediction_flag = 0; } } } /**************************************************************/ /* Parse Macroblock data */ /**************************************************************/ u1_mb_type = ps_cur_mb_info->u1_mb_type; if(u1_mb_type < u1_mb_threshold) { ps_cur_mb_info->ps_curmb->u1_mb_type = u1_inter_mb_type; ret = ps_svc_lyr_dec->pf_parse_inter_mb_svc_ext( ps_svc_lyr_dec, ps_cur_mb_info, ps_svc_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; if(ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER) { ps_cur_deblk_mb->u1_deblocking_mode = MB_DISABLE_FILTERING; } } else { /* Storing Intra partition info */ ps_parse_mb_data->u1_num_part = 0; 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; ps_cur_deblk_mb->u1_mb_type |= D_INTRA_MB; } else { ret = isvcd_parse_imb_cavlc(ps_svc_lyr_dec, ps_cur_mb_info, ps_svc_cur_mb_info, u1_num_mbs, (UWORD8) (u1_mb_type - u1_mb_threshold)); if(ret != OK) return ret; if(0 == ps_svc_cur_mb_info->u1_base_mode_flag) { ps_cur_deblk_mb->u1_mb_type |= D_INTRA_MB; } } ps_parse_mb_data->u1_isI_mb = !ps_svc_cur_mb_info->u1_base_mode_flag; } uc_more_data_flag = MORE_RBSP_DATA(ps_bitstrm); } ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp; if(ps_dec->u1_enable_mb_info) { ih264d_populate_mb_info_map(ps_dec, ps_cur_mb_info, ps_cur_mb_info->u2_mbx << 1, ps_cur_mb_info->u2_mby << 1, ps_cur_deblk_mb->u1_mb_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; if(u1_decode_nmb) { ret = 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(ret != OK) return ret; } 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; ps_svc_lyr_dec->ps_svc_nmb_info += u1_num_mbs; } else { ret = isvcd_decode_recon_tfr_nmb_non_base_lyr(ps_svc_lyr_dec, u1_mb_idx, u1_num_mbs, u1_num_mbs_next, u1_tfr_n_mb, u1_end_of_row); if(ret != OK) return ret; } 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; } /*! ************************************************************************** * \if Function name : ih264d_parse_pmb_cabac_svc \endif * * \brief * This function parses CABAC syntax of a P MB. * * \return * 0 on Success and Error code otherwise ************************************************************************** */ WORD32 isvcd_parse_pmb_cabac(svc_dec_lyr_struct_t *ps_svc_lyr_dec, dec_mb_info_t *ps_cur_mb_info, dec_svc_mb_info_t *ps_svc_cur_mb_info, UWORD8 u1_mb_num, UWORD8 u1_num_mbsNby2) { dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec; dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL; 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_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params; 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); } /*Adding code to get Motion Prediction Flags*/ { UWORD8 uc_i; UWORD8 *pu1_motion_pred_flag_l0; UWORD8 u1_mvp_flag; 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; pu1_motion_pred_flag_l0 = &ps_svc_cur_mb_info->au1_motion_pred_flag[0]; *pu1_motion_pred_flag_l0 = 0; if(ps_svc_cur_mb_info->u1_crop_window_flag && ps_svc_slice_params->u1_adaptive_motion_prediction_flag) { for(uc_i = 0; uc_i < u1_num_mb_part; uc_i++) { /*usage of bins and ctxt check*/ u1_mvp_flag = ih264d_decode_bin(0, ps_svc_lyr_dec->ps_motion_prediction_flag_l0, ps_bitstrm, ps_cab_env); COPYTHECONTEXT("SVC ext: ps_motion_prediction_flag_l0", u1_mvp_flag); *pu1_motion_pred_flag_l0 |= (u1_mvp_flag << uc_i); if(u1_mvp_flag) { pi1_ref_idx[uc_i] = -1; } } } else if(ps_svc_cur_mb_info->u1_crop_window_flag) { *pu1_motion_pred_flag_l0 = ps_svc_slice_params->u1_default_motion_prediction_flag ? ((1 << u1_num_mb_part) - 1) : 0; if(ps_svc_slice_params->u1_default_motion_prediction_flag) { pi1_ref_idx[0] = -1; pi1_ref_idx[1] = -1; pi1_ref_idx[2] = -1; pi1_ref_idx[3] = -1; } } /* Decoding reference index 0: For simple profile the following */ /* conditions are always true (mb_field_decoding_flag == 0); */ /* (MbPartPredMode != PredL1) */ if((uc_num_ref_idx_l0_active_minus1 > 0) & (u1_mb_type != PRED_8x8R0)) { /* force the routine to decode ref idx for each partition */ /*SVC added motion_prediction_flag to force it to take it only for * !motion_pred_flag_l0*/ 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; } /* update incropwindow*/ if(ps_svc_slice_params->u1_adaptive_residual_prediction_flag && ps_svc_cur_mb_info->u1_crop_window_flag) { ps_svc_cur_mb_info->u1_residual_prediction_flag = ih264d_decode_bin( 1, ps_svc_lyr_dec->ps_residual_prediction_flag, ps_bitstrm, ps_cab_env); COPYTHECONTEXT("SVC ext: u1_residual_prediction_flag", ps_cur_mb_info->u1_residual_prediction_flag); } else { /*residual flag inference code */ if(1 == ps_svc_cur_mb_info->u1_crop_window_flag) { ps_svc_cur_mb_info->u1_residual_prediction_flag = ps_svc_slice_params->u1_default_residual_prediction_flag; } else { ps_svc_cur_mb_info->u1_residual_prediction_flag = 0; } } if(ps_svc_slice_params->u1_scan_idx_end >= ps_svc_slice_params->u1_scan_idx_start) { 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; /*residual from start to end idx */ 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 : isvcd_parse_pmb_cavlc \endif * * \brief * This function parses CAVLC syntax of a P MB. * * \return * 0 on Success and Error code otherwise ************************************************************************** */ WORD32 isvcd_parse_pmb_cavlc(svc_dec_lyr_struct_t *ps_svc_lyr_dec, dec_mb_info_t *ps_cur_mb_info, dec_svc_mb_info_t *ps_svc_cur_mb_info, UWORD8 u1_mb_num, UWORD8 u1_num_mbsNby2) { dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec; dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL; 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_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params; 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]; } /*Adding code to get Motion Prediction Flags*/ { /*free the scratch buffer once used*/ UWORD8 uc_i; UWORD8 *pu1_motion_pred_flag_l0; UWORD8 u1_mvp_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; pu1_motion_pred_flag_l0 = &ps_svc_cur_mb_info->au1_motion_pred_flag[0]; *pu1_motion_pred_flag_l0 = 0; if(ps_svc_cur_mb_info->u1_crop_window_flag && ps_svc_slice_params->u1_adaptive_motion_prediction_flag) { for(uc_i = 0; uc_i < u1_num_mb_part; uc_i++) { /*usage of bins and ctxt check*/ u1_mvp_flag = ih264d_get_bit_h264(ps_bitstrm); COPYTHECONTEXT("SVC ext: ps_motion_prediction_flag_l0", u1_mvp_flag); *pu1_motion_pred_flag_l0 |= (u1_mvp_flag << uc_i); } } else if(ps_svc_cur_mb_info->u1_crop_window_flag) { *pu1_motion_pred_flag_l0 = ps_svc_slice_params->u1_default_motion_prediction_flag ? ((1 << u1_num_mb_part) - 1) : 0; } /* Decoding reference index 0: For simple profile the following */ /* conditions are always true (mb_field_decoding_flag == 0); */ /* (MbPartPredMode != PredL1) */ if((uc_num_ref_idx_l0_active_minus1 > 0) & (u1_mb_type != PRED_8x8R0)) { if(1 == uc_num_ref_idx_l0_active_minus1) isvcd_parse_pmb_ref_index_cavlc_range1(u1_num_mb_part, ps_bitstrm, pi1_ref_idx, uc_num_ref_idx_l0_active_minus1, pu1_motion_pred_flag_l0); else { ret = isvcd_parse_pmb_ref_index_cavlc(u1_num_mb_part, ps_bitstrm, pi1_ref_idx, uc_num_ref_idx_l0_active_minus1, pu1_motion_pred_flag_l0); 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 */ // 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; } if(ps_svc_slice_params->u1_adaptive_residual_prediction_flag && ps_svc_cur_mb_info->u1_crop_window_flag) { ps_svc_cur_mb_info->u1_residual_prediction_flag = ih264d_get_bit_h264(ps_bitstrm); COPYTHECONTEXT("SVC ext: u1_residual_prediction_flag", ps_svc_cur_mb_info->u1_residual_prediction_flag); } else { /*residual flag inference code */ if(1 == ps_svc_cur_mb_info->u1_crop_window_flag) { ps_svc_cur_mb_info->u1_residual_prediction_flag = ps_svc_slice_params->u1_default_residual_prediction_flag; } else { ps_svc_cur_mb_info->u1_residual_prediction_flag = 0; } } if(ps_svc_slice_params->u1_scan_idx_end >= ps_svc_slice_params->u1_scan_idx_start) { 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; } /*change to support start to end idx*/ 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 : isvcd_mark_err_slice_skip \endif * * \brief * * * \return * 0 on Success and Error code otherwise ************************************************************************** */ WORD32 isvcd_mark_err_slice_skip(svc_dec_lyr_struct_t *ps_svc_lyr_dec, WORD32 num_mb_skip, UWORD8 u1_is_idr_slice, UWORD16 u2_frame_num, pocstruct_t *ps_cur_poc, WORD32 prev_slice_err) { dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec; WORD32 i2_cur_mb_addr; UWORD32 u1_num_mbs; 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_slice_params_t *ps_slice = ps_dec->ps_cur_slice; deblk_mb_t *ps_cur_deblk_mb; dec_mb_info_t *ps_cur_mb_info; dec_svc_mb_info_t *ps_svc_cur_mb_info; parse_pmbarams_t *ps_parse_mb_data; UWORD32 u1_inter_mb_type; UWORD32 u1_deblk_mb_type; UWORD32 u1_mbaff; parse_part_params_t *ps_part_info; WORD32 ret; UNUSED(u1_is_idr_slice); ps_svc_lyr_dec->u1_error_in_cur_frame = 1; 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; if(poc <= INT32_MAX - 2) 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 isvcd_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 = isvcd_start_of_pic(ps_svc_lyr_dec, poc, ps_cur_poc, ps_dec->ps_cur_slice->u2_frame_num, &ps_dec->ps_pps[j]); if(ret != OK) { return ret; } /*inter layer buffer intialization */ ps_svc_lyr_dec->ps_inter_lyr_mb_prms_cur_mb = ps_svc_lyr_dec->ps_inter_lyr_mb_prms_frm_start; ps_svc_lyr_dec->ps_il_pred_mv_bank_buf_cur_mb = ps_svc_lyr_dec->ps_il_pred_mv_bank_buf_base; } 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_output_present = 0; 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) { #ifdef KEEP_THREADS_ACTIVE ret = ithread_mutex_lock(ps_dec->apv_proc_start_mutex[0]); RETURN_IF((ret != IV_SUCCESS), ret); ps_dec->ai4_process_start[0] = PROC_START; ret = ithread_cond_signal(ps_dec->apv_proc_start_condition[0]); RETURN_IF((ret != IV_SUCCESS), ret); ret = ithread_mutex_unlock(ps_dec->apv_proc_start_mutex[0]); RETURN_IF((ret != IV_SUCCESS), ret); #endif #ifdef KEEP_THREADS_ACTIVE if(ps_dec->u4_bs_deblk_thread_created) { ret = ithread_mutex_lock(ps_dec->apv_proc_start_mutex[1]); RETURN_IF((ret != IV_SUCCESS), ret); ps_dec->ai4_process_start[1] = PROC_START; ret = ithread_cond_signal(ps_dec->apv_proc_start_condition[1]); RETURN_IF((ret != IV_SUCCESS), ret); ret = ithread_mutex_unlock(ps_dec->apv_proc_start_mutex[1]); RETURN_IF((ret != IV_SUCCESS), ret); } #endif } } } 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) { if((ps_dec->i4_submb_ofst - ((WORD32) ((u1_num_mbs - u1_mb_idx) << 4))) < 0) { ps_dec->i4_submb_ofst = ((u1_num_mbs - u1_mb_idx) << 4); } ret = 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; if(ret != OK) return ret; } 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; ps_svc_lyr_dec->ps_svc_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 */ /******************************************************/ ret = isvcd_parse_interlayer_resamp_func_init(ps_svc_lyr_dec, ps_dec->ps_cur_slice->u2_first_mb_in_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; i2_cur_mb_addr = ps_dec->u2_total_mbs_coded; i2_mb_skip_run = num_mb_skip; if(0 == ps_dec->u2_total_mbs_coded) { ps_dec->ps_cur_mb_row = ps_dec->ps_nbr_mb_row; //[0]; // Increment by 2 ,so that left mb (mbaff decrements by 2) will always be valid ps_dec->ps_cur_mb_row += 2; ps_dec->ps_top_mb_row = ps_dec->ps_nbr_mb_row; ps_dec->ps_top_mb_row += ((ps_dec->u2_frm_wd_in_mbs + 2) << (1 - ps_dec->ps_cur_sps->u1_frame_mbs_only_flag)); // Increment by 2 ,so that left mb (mbaff decrements by 2) will always be valid ps_dec->ps_top_mb_row += 2; /* CHANGED CODE */ ps_dec->ps_mv_cur = ps_dec->s_cur_pic.ps_mv; ps_dec->ps_mv_left = ps_dec->s_cur_pic.ps_mv; ps_dec->ps_mv_top = ps_dec->ps_mv_top_p[0]; ps_dec->ps_deblk_mbn = ps_dec->ps_deblk_pic; ps_dec->ps_mv = ps_dec->s_cur_pic.ps_mv; ps_dec->ps_mv_bank_cur = ps_dec->s_cur_pic.ps_mv; ps_dec->pu1_col_zero_flag = ps_dec->s_cur_pic.pu1_col_zero_flag; ps_dec->ps_part = ps_dec->ps_parse_part_params; ps_dec->pf_mvpred_ref_tfr_nby2mb = isvcd_mv_pred_ref_tfr_nby2_epmb; } while(!u1_slice_end) { if(i2_cur_mb_addr > ps_dec->ps_cur_sps->u2_max_mb_addr) break; ps_svc_cur_mb_info = ps_svc_lyr_dec->ps_svc_nmb_info + u1_num_mbs; 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 isvcd_get_mb_info_cavlc_nonmbaff(ps_dec, i2_cur_mb_addr, ps_cur_mb_info, i2_mb_skip_run); { UWORD16 *pu2_res_luma_csbp; /*Pointer assignment for Residual NNZ */ pu2_res_luma_csbp = ps_svc_lyr_dec->pu2_frm_res_luma_csbp + ps_cur_mb_info->u2_mbx; pu2_res_luma_csbp += ps_cur_mb_info->u2_mby * ps_svc_lyr_dec->i4_frm_res_luma_csbp_stride; *pu2_res_luma_csbp = 0; ps_svc_lyr_dec->ps_inter_lyr_mb_prms_cur_mb = ps_svc_lyr_dec->ps_inter_lyr_mb_prms_frm_start + ps_cur_mb_info->u2_mbx + (ps_svc_lyr_dec->u2_inter_lyr_mb_prms_stride * (ps_cur_mb_info->u2_mby)); ps_svc_lyr_dec->ps_inter_lyr_mb_prms_cur_mb->i1_mb_mode = SVC_INTER_MB; ps_svc_lyr_dec->ps_inter_lyr_mb_prms_cur_mb->i1_tx_size = ps_cur_mb_info->u1_tran_form8x8; ps_svc_lyr_dec->ps_inter_lyr_mb_prms_cur_mb->u2_luma_nnz = 0; ps_svc_lyr_dec->ps_inter_lyr_mb_prms_cur_mb->u1_chroma_nnz = 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); } /* 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; /* set appropriat flags in svc cur MB info */ ps_svc_cur_mb_info->u1_base_mode_flag = 0; ps_svc_cur_mb_info->u1_residual_prediction_flag = 0; ps_svc_cur_mb_info->u1_crop_window_flag = 0; ps_svc_cur_mb_info->au1_motion_pred_flag[0] = 0; ps_svc_cur_mb_info->au1_motion_pred_flag[1] = 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; if(ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER) { ps_cur_deblk_mb->u1_deblocking_mode = MB_DISABLE_FILTERING; } 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++; 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) { if((ps_dec->i4_submb_ofst - ((WORD32) ((u1_num_mbs - u1_mb_idx) << 4))) < 0) { ps_dec->i4_submb_ofst = ((u1_num_mbs - u1_mb_idx) << 4); } ps_dec->pf_mvpred_ref_tfr_nby2mb(ps_dec, u1_mb_idx, u1_num_mbs); 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; ps_svc_lyr_dec->ps_svc_nmb_info += u1_num_mbs; } else { if(ps_svc_lyr_dec->u1_layer_identifier == TARGET_LAYER) { 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); } else { isvcd_decode_recon_tfr_nmb_base_lyr(ps_svc_lyr_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 : isvcd_parse_interlayer_resamp_func_init \endif * \brief * This function initilizes default values for svcd inter layer func. * * \return * 0 on Success and Error code otherwise ************************************************************************** */ WORD32 isvcd_parse_interlayer_resamp_func_init(svc_dec_lyr_struct_t *ps_svc_lyr_dec, UWORD16 u2_first_mb_in_slice) { dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec; dec_slice_params_t *ps_slice = ps_dec->ps_cur_slice; WORD32 ret = OK; if(ps_svc_lyr_dec->u1_res_init_done == 1) return ret; if(TARGET_LAYER != ps_svc_lyr_dec->u1_layer_identifier) { ps_slice->u1_disable_dblk_filter_idc = ps_svc_lyr_dec->u1_inter_lyr_disable_dblk_filter_idc; ps_slice->i1_slice_alpha_c0_offset = ps_svc_lyr_dec->i1_inter_lyr_slice_alpha_c0_offset; ps_slice->i1_slice_beta_offset = ps_svc_lyr_dec->i1_inter_lyr_slice_beta_offset; } if(0 == u2_first_mb_in_slice) { ret = isvcd_populate_res_prms(ps_svc_lyr_dec); if(ret != OK) return NOT_OK; isvcd_crop_wnd_flag_res_int(ps_svc_lyr_dec); ret = isvcd_comp_mode_mv_res_init(ps_svc_lyr_dec); if(ret != OK) return NOT_OK; ret = isvcd_ii_pred_res_init(ps_svc_lyr_dec); if(ret != OK) return NOT_OK; ret = isvcd_intra_resamp_res_init(ps_svc_lyr_dec); if(ret != OK) return NOT_OK; ret = isvcd_residual_samp_res_init(ps_svc_lyr_dec); if(ret != OK) return NOT_OK; ps_svc_lyr_dec->u1_res_init_done = 1; } return ret; } /*! ************************************************************************** * \if Function name : isvcd_decode_pslice \endif * * \brief * Decodes a P Slice * * * \return * 0 on Success and Error code otherwise ************************************************************************** */ WORD32 isvcd_parse_pslice(svc_dec_lyr_struct_t *ps_svc_lyr_dec, UWORD16 u2_first_mb_in_slice) { dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec; 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; UWORD8 u1_field_pic_flag = ps_cur_slice->u1_field_pic_flag; UWORD64 u8_ref_idx_l0; UWORD32 u4_temp; WORD32 i_temp; WORD32 ret; WORD64 i8_temp; /*--------------------------------------------------------------------*/ /* 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); u8_ref_idx_l0 = ps_dec->ps_cur_pps->u1_num_ref_idx_lx_active[0]; if(ps_cur_slice->u1_num_ref_idx_active_override_flag) { u8_ref_idx_l0 = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf) + (UWORD64) 1; } { UWORD8 u1_max_ref_idx = H264_MAX_REF_PICS << u1_field_pic_flag; if(u8_ref_idx_l0 >= u1_max_ref_idx) { return ERROR_NUM_REF; } ps_cur_slice->u1_num_ref_idx_lx_active[0] = (UWORD8) u8_ref_idx_l0; 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; 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; ppv_map_ref_idx_to_poc_lx_t++; ppv_map_ref_idx_to_poc_lx_b[0] = 0; 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_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) { dec_pic_params_t *ps_pps = ps_dec->ps_cur_pps; dec_seq_params_t *ps_sps_tmp = ps_pps->ps_sps; UWORD8 u1_nal_unit_type_tmp = ps_dec->u1_nal_unit_type; ps_pps->ps_sps = ps_dec->ps_cur_sps; if(ps_svc_lyr_dec->ps_nal_svc_ext->u1_idr_flag) ps_dec->u1_nal_unit_type = IDR_SLICE_NAL; i_temp = ih264d_read_mmco_commands(ps_dec); ps_pps->ps_sps = ps_sps_tmp; ps_dec->u1_nal_unit_type = u1_nal_unit_type_tmp; 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 */ i8_temp = (WORD64) ps_pps->u1_pic_init_qp + ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf); if((i8_temp < MIN_H264_QP) || (i8_temp > MAX_H264_QP)) { return ERROR_INV_RANGE_QP_T; } ps_cur_slice->u1_slice_qp = (UWORD8) i8_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_svc_lyr_dec->pf_parse_svc_inter_slice = isvcd_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 = isvcd_get_mb_info_cabac_nonmbaff; } else { SWITCHONTRACE; SWITCHOFFTRACECABAC; ps_svc_lyr_dec->pf_parse_svc_inter_slice = isvcd_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 = isvcd_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_svc_lyr_dec->pf_parse_svc_inter_slice(ps_svc_lyr_dec, ps_cur_slice, u2_first_mb_in_slice); if(ret != OK) return ret; return OK; }