/****************************************************************************** * * Copyright (C) 2015 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ***************************************************************************** * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore */ /*! ************************************************************************** * \file ih264d_parse_bslice.c * * \brief * Contains routines that decode a I slice type * * Detailed_description * * \date * 07/07/2003 * * \author NS ************************************************************************** */ #include #include "ih264d_bitstrm.h" #include "ih264d_defs.h" #include "ih264d_debug.h" #include "ih264d_tables.h" #include "ih264d_structs.h" #include "ih264d_defs.h" #include "ih264d_parse_cavlc.h" #include "ih264d_mb_utils.h" #include "ih264d_parse_slice.h" #include "ih264d_process_intra_mb.h" #include "ih264d_mvpred.h" #include "ih264d_parse_islice.h" #include "ih264d_inter_pred.h" #include "ih264d_process_pslice.h" #include "ih264d_process_bslice.h" #include "ih264d_deblocking.h" #include "ih264d_cabac.h" #include "ih264d_parse_mb_header.h" #include "ih264d_error_handler.h" #include "ih264d_mvpred.h" #include "ih264d_cabac.h" #include "ih264d_utils.h" void ih264d_init_cabac_contexts(UWORD8 u1_slice_type, dec_struct_t * ps_dec); /*! ************************************************************************** * \if Function name : ParseMb_SubMb_PredBCav\endif * * \brief * Implements sub_mb_pred() of 7.3.5.2. & mb_pred() of 7.3.5.1 * * \return * None. * ************************************************************************** */ WORD32 ih264d_parse_bmb_non_direct_cavlc(dec_struct_t * ps_dec, dec_mb_info_t * ps_cur_mb_info, UWORD8 u1_mb_num, UWORD8 u1_num_mbsNby2) { 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 * pu1_sub_mb_pred_modes = (UWORD8 *)(gau1_ih264d_submb_pred_modes) + 4; const UWORD8 (*pu1_mb_pred_modes)[32] = (const UWORD8 (*)[32])gau1_ih264d_mb_pred_modes; const UWORD8 * pu1_num_mb_part = (const UWORD8 *)gau1_ih264d_num_mb_part; const UWORD8 * pu1_sub_mb_mc_mode = (const UWORD8 *)(gau1_ih264d_submb_mc_mode) + 4; parse_pmbarams_t * ps_parse_mb_data = ps_dec->ps_parse_mb_data + u1_num_mbsNby2; UWORD8 * pu1_col_info = ps_parse_mb_data->u1_col_info; WORD8 (*pi1_ref_idx)[MAX_REFIDX_INFO_PER_MB] = ps_parse_mb_data->i1_ref_idx; UWORD8 u1_mb_type = ps_cur_mb_info->u1_mb_type; UWORD8 u1_mb_mc_mode, u1_num_mb_part, u1_sub_mb = !(u1_mb_type ^ B_8x8); UWORD32 u4_mb_mc_mode = 0, u4_mb_pred_mode = 0; WORD32 ret; if(u1_sub_mb) { UWORD8 uc_i; u1_mb_mc_mode = 0; u1_num_mb_part = 4; /* Reading the subMB type */ for(uc_i = 0; uc_i < 4; uc_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 > 12) return ERROR_SUB_MB_TYPE; else { UWORD8 u1_subMbPredMode = pu1_sub_mb_pred_modes[ui_sub_mb_mode]; u4_mb_mc_mode = (u4_mb_mc_mode << 8) | pu1_sub_mb_mc_mode[ui_sub_mb_mode]; u4_mb_pred_mode = (u4_mb_pred_mode << 8) | u1_subMbPredMode; pi1_ref_idx[0][uc_i] = ((u1_subMbPredMode & PRED_L0) - 1) >> 1; pi1_ref_idx[1][uc_i] = ((u1_subMbPredMode & PRED_L1) - 1) >> 1; COPYTHECONTEXT("sub_mb_type", u1_subMbPredMode); } /* Storing collocated Mb and SubMb mode information */ *pu1_col_info++ = ((PRED_8x8) << 6) | ((pu1_sub_mb_mc_mode[ui_sub_mb_mode] << 4)); if(ui_sub_mb_mode != B_DIRECT_8x8) { if(ui_sub_mb_mode > B_BI_8x8) { ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 0; } } else if(!ps_dec->s_high_profile.u1_direct_8x8_inference_flag) { ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 0; } } } else { UWORD8 u1_mb_pred_mode_idx = 5 + u1_mb_type; UWORD8 u1_mb_pred_mode_part0 = pu1_mb_pred_modes[0][u1_mb_pred_mode_idx]; UWORD8 u1_mb_pred_mode_part1 = pu1_mb_pred_modes[1][u1_mb_pred_mode_idx]; u1_mb_mc_mode = ps_cur_mb_info->u1_mb_mc_mode; u1_num_mb_part = pu1_num_mb_part[u1_mb_mc_mode]; pi1_ref_idx[0][0] = ((u1_mb_pred_mode_part0 & PRED_L0) - 1) >> 1; pi1_ref_idx[1][0] = ((u1_mb_pred_mode_part0 & PRED_L1) - 1) >> 1; pi1_ref_idx[0][1] = ((u1_mb_pred_mode_part1 & PRED_L0) - 1) >> 1; pi1_ref_idx[1][1] = ((u1_mb_pred_mode_part1 & PRED_L1) - 1) >> 1; u4_mb_pred_mode = (u1_mb_pred_mode_part0 << 8) | u1_mb_pred_mode_part1; u4_mb_mc_mode = u1_mb_mc_mode | (u1_mb_mc_mode << 8); u4_mb_mc_mode <<= 16; u4_mb_pred_mode <<= 16; /* Storing collocated Mb and SubMb mode information */ *pu1_col_info++ = (u1_mb_mc_mode << 6); if(u1_mb_mc_mode) *pu1_col_info++ = (u1_mb_mc_mode << 6); } { UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag; UWORD8 uc_field = ps_cur_mb_info->u1_mb_field_decodingflag; UWORD8 *pu1_num_ref_idx_lx_active = ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active; const UWORD8 u1_mbaff_field = (u1_mbaff & uc_field); UWORD8 u4_num_ref_idx_lx_active; u4_num_ref_idx_lx_active = (pu1_num_ref_idx_lx_active[0] << u1_mbaff_field) - 1; if(u4_num_ref_idx_lx_active) { if(1 == u4_num_ref_idx_lx_active) ih264d_parse_bmb_ref_index_cavlc_range1( u1_num_mb_part, ps_bitstrm, pi1_ref_idx[0], u4_num_ref_idx_lx_active); else { ret = ih264d_parse_bmb_ref_index_cavlc(u1_num_mb_part, ps_bitstrm, pi1_ref_idx[0], u4_num_ref_idx_lx_active); if(ret != OK) return ret; } } u4_num_ref_idx_lx_active = (pu1_num_ref_idx_lx_active[1] << u1_mbaff_field) - 1; if(u4_num_ref_idx_lx_active) { if(1 == u4_num_ref_idx_lx_active) ih264d_parse_bmb_ref_index_cavlc_range1( u1_num_mb_part, ps_bitstrm, pi1_ref_idx[1], u4_num_ref_idx_lx_active); else { ret = ih264d_parse_bmb_ref_index_cavlc(u1_num_mb_part, ps_bitstrm, pi1_ref_idx[1], u4_num_ref_idx_lx_active); if(ret != OK) return ret; } } } /* Read MotionVectors */ { const UWORD8 * pu1_top_left_sub_mb_indx; const UWORD8 * pu1_sub_mb_indx_mod = (const UWORD8 *)(gau1_ih264d_submb_indx_mod) + (u1_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; const UWORD8 * pu1_mb_partw = (const UWORD8 *)gau1_ih264d_mb_partw; const UWORD8 * pu1_mb_parth = (const UWORD8 *)gau1_ih264d_mb_parth; UWORD8 u1_p_idx = 0, u1_num_submb_part, uc_lx; parse_part_params_t * ps_part; mv_pred_t *ps_mv_start = ps_dec->ps_mv_cur + (u1_mb_num << 4); UWORD8 u1_mb_part_wd, u1_mb_part_ht; /* Initialisations */ ps_part = ps_dec->ps_part; /* Default Initialization for Non subMb Case Mode */ u1_mb_part_wd = pu1_mb_partw[u1_mb_mc_mode]; u1_mb_part_ht = pu1_mb_parth[u1_mb_mc_mode]; u1_num_submb_part = 1; /* Decoding the MV for the subMB */ for(uc_lx = 0; uc_lx < 2; uc_lx++) { UWORD8 u1_sub_mb_num = 0, u1_pred_mode, uc_i; UWORD32 u4_mb_mc_mode_tmp = u4_mb_mc_mode; UWORD32 u4_mb_pred_mode_tmp = u4_mb_pred_mode; UWORD16 u2_sub_mb_num = 0x028A; // for sub mb case UWORD8 u1_b2 = uc_lx << 1; u1_pred_mode = (uc_lx) ? PRED_L1 : PRED_L0; pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_mb_mc_mode << 1); for(uc_i = 0; uc_i < u1_num_mb_part; uc_i++) { UWORD8 u1_mb_mc_mode, uc_j; UWORD8 i1_pred = u4_mb_pred_mode_tmp >> 24; u1_mb_mc_mode = u4_mb_mc_mode_tmp >> 24; u4_mb_pred_mode_tmp <<= 8; u4_mb_mc_mode_tmp <<= 8; /* subMb prediction mode */ if(u1_sub_mb) { u1_mb_part_wd = pu1_sub_mb_partw[u1_mb_mc_mode]; u1_mb_part_ht = pu1_sub_mb_parth[u1_mb_mc_mode]; u1_sub_mb_num = u2_sub_mb_num >> 12; u1_num_submb_part = pu1_num_sub_mb_part[u1_mb_mc_mode]; pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_mb_mc_mode << 1); u2_sub_mb_num <<= 4; } for(uc_j = 0; uc_j < u1_num_submb_part; uc_j++, pu1_top_left_sub_mb_indx++) { mv_pred_t * ps_mv; u1_sub_mb_num = u1_sub_mb_num + *pu1_top_left_sub_mb_indx; ps_mv = ps_mv_start + u1_sub_mb_num; /* Storing Info for partitions, writing only once */ if(uc_lx) { ps_part->u1_is_direct = (!i1_pred); ps_part->u1_pred_mode = i1_pred; ps_part->u1_sub_mb_num = u1_sub_mb_num; ps_part->u1_partheight = u1_mb_part_ht; ps_part->u1_partwidth = u1_mb_part_wd; /* Increment partition Index */ u1_p_idx++; ps_part++; } if(i1_pred & u1_pred_mode) { WORD16 i2_mvx, i2_mvy; //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 //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_mvy = (-(WORD32)u4_abs_val); else i2_mvy = (u4_abs_val); } //inlinined ih264d_sev /* Storing Mv residuals */ ps_mv->i2_mv[u1_b2] = i2_mvx; ps_mv->i2_mv[u1_b2 + 1] = i2_mvy; } } } } /* write back to the scratch partition info */ ps_dec->ps_part = ps_part; ps_parse_mb_data->u1_num_part = u1_sub_mb ? u1_p_idx : u1_num_mb_part; } return OK; } /*! ************************************************************************** * \if Function name : ParseMb_SubMb_PredBCab\endif * * \brief * Implements sub_mb_pred() of 7.3.5.2. & mb_pred() of 7.3.5.1 * * \return * None. * ************************************************************************** */ WORD32 ih264d_parse_bmb_non_direct_cabac(dec_struct_t * ps_dec, dec_mb_info_t * ps_cur_mb_info, UWORD8 u1_mb_num, UWORD8 u1_num_mbsNby2) { /* Loads from ps_dec */ decoding_envirnoment_t * ps_cab_env = &ps_dec->s_cab_dec_env; dec_bit_stream_t * ps_bitstrm = ps_dec->ps_bitstrm; ctxt_inc_mb_info_t *p_curr_ctxt = ps_dec->ps_curr_ctxt_mb_info; parse_pmbarams_t * ps_parse_mb_data = ps_dec->ps_parse_mb_data + u1_num_mbsNby2; /* table pointer loads */ const UWORD8 * pu1_sub_mb_pred_modes = (UWORD8 *)(gau1_ih264d_submb_pred_modes) + 4; const UWORD8 (*pu1_mb_pred_modes)[32] = (const UWORD8 (*)[32])gau1_ih264d_mb_pred_modes; const UWORD8 *pu1_num_mb_part = (const UWORD8 *)gau1_ih264d_num_mb_part; const UWORD8 *pu1_sub_mb_mc_mode = (UWORD8 *)(gau1_ih264d_submb_mc_mode) + 4; const UWORD8 u1_mb_type = ps_cur_mb_info->u1_mb_type; UWORD8 * pu1_col_info = ps_parse_mb_data->u1_col_info; WORD8 *pi1_ref_idx_l0 = &ps_parse_mb_data->i1_ref_idx[0][0]; WORD8 *pi1_ref_idx_l1 = &ps_parse_mb_data->i1_ref_idx[1][0]; UWORD8 u1_dec_ref_l0, u1_dec_ref_l1; UWORD8 u1_num_mb_part, u1_mb_mc_mode, u1_sub_mb, u1_mbpred_mode = 5 + u1_mb_type; UWORD32 u4_mb_mc_mode = 0, u4_mb_pred_mode = 0; WORD32 ret; p_curr_ctxt->u1_mb_type = CAB_NON_BD16x16; u1_sub_mb = !(u1_mb_type ^ B_8x8); { UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag; UWORD8 *pu1_num_ref_idx_lx_active = ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active; UWORD8 uc_field = ps_cur_mb_info->u1_mb_field_decodingflag; UWORD8 u1_mbaff_field = (u1_mbaff & uc_field); u1_dec_ref_l0 = (pu1_num_ref_idx_lx_active[0] << u1_mbaff_field) - 1; u1_dec_ref_l1 = (pu1_num_ref_idx_lx_active[1] << u1_mbaff_field) - 1; } if(u1_sub_mb) { const UWORD8 u1_colz = ((PRED_8x8) << 6); UWORD8 uc_i; u1_mb_mc_mode = 0; u1_num_mb_part = 4; /* Reading the subMB type */ for(uc_i = 0; uc_i < 4; uc_i++) { UWORD8 u1_sub_mb_mode, u1_subMbPredModes; u1_sub_mb_mode = ih264d_parse_submb_type_cabac( 1, ps_cab_env, ps_bitstrm, ps_dec->p_sub_mb_type_t); if(u1_sub_mb_mode > 12) return ERROR_SUB_MB_TYPE; u1_subMbPredModes = pu1_sub_mb_pred_modes[u1_sub_mb_mode]; u4_mb_mc_mode = (u4_mb_mc_mode << 8) | pu1_sub_mb_mc_mode[u1_sub_mb_mode]; u4_mb_pred_mode = (u4_mb_pred_mode << 8) | u1_subMbPredModes; *pi1_ref_idx_l0++ = (u1_subMbPredModes & PRED_L0) ? u1_dec_ref_l0 : -1; *pi1_ref_idx_l1++ = (u1_subMbPredModes & PRED_L1) ? u1_dec_ref_l1 : -1; COPYTHECONTEXT("sub_mb_type", u1_sub_mb_mode); /* Storing collocated Mb and SubMb mode information */ *pu1_col_info++ = (u1_colz | (pu1_sub_mb_mc_mode[u1_sub_mb_mode] << 4)); if(u1_sub_mb_mode != B_DIRECT_8x8) { if(u1_sub_mb_mode > B_BI_8x8) { ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 0; } } else if(!ps_dec->s_high_profile.u1_direct_8x8_inference_flag) { ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 0; } } pi1_ref_idx_l0 -= 4; pi1_ref_idx_l1 -= 4; } else { UWORD8 u1_mb_pred_mode_part0 = pu1_mb_pred_modes[0][u1_mbpred_mode]; UWORD8 u1_mb_pred_mode_part1 = pu1_mb_pred_modes[1][u1_mbpred_mode]; u1_mb_mc_mode = ps_cur_mb_info->u1_mb_mc_mode; u1_num_mb_part = pu1_num_mb_part[u1_mb_mc_mode]; /* Storing collocated Mb and SubMb mode information */ *pu1_col_info++ = (u1_mb_mc_mode << 6); if(u1_mb_mc_mode) *pu1_col_info++ = (u1_mb_mc_mode << 6); u4_mb_mc_mode = u1_mb_mc_mode | (u1_mb_mc_mode << 8); u4_mb_mc_mode <<= 16; u4_mb_pred_mode = ((u1_mb_pred_mode_part0 << 8) | u1_mb_pred_mode_part1) << 16; *pi1_ref_idx_l0++ = (u1_mb_pred_mode_part0 & PRED_L0) ? u1_dec_ref_l0 : -1; *pi1_ref_idx_l0-- = (u1_mb_pred_mode_part1 & PRED_L0) ? u1_dec_ref_l0 : -1; *pi1_ref_idx_l1++ = (u1_mb_pred_mode_part0 & PRED_L1) ? u1_dec_ref_l1 : -1; *pi1_ref_idx_l1-- = (u1_mb_pred_mode_part1 & PRED_L1) ? u1_dec_ref_l1 : -1; } { WORD8 *pi1_lft_cxt = ps_dec->pi1_left_ref_idx_ctxt_inc; WORD8 *pi1_top_cxt = p_curr_ctxt->i1_ref_idx; ret = ih264d_parse_ref_idx_cabac(u1_num_mb_part, 0, u1_dec_ref_l0, u1_mb_mc_mode, pi1_ref_idx_l0, pi1_lft_cxt, pi1_top_cxt, ps_cab_env, ps_bitstrm, ps_dec->p_ref_idx_t); if(ret != OK) return ret; ret = ih264d_parse_ref_idx_cabac(u1_num_mb_part, 2, u1_dec_ref_l1, u1_mb_mc_mode, pi1_ref_idx_l1, pi1_lft_cxt, pi1_top_cxt, ps_cab_env, ps_bitstrm, ps_dec->p_ref_idx_t); if(ret != OK) return ret; } /* Read MotionVectors */ { const UWORD8 *pu1_top_left_sub_mb_indx; UWORD8 uc_j, uc_lx; UWORD8 u1_mb_part_wd, u1_mb_part_ht; const UWORD8 *pu1_sub_mb_indx_mod = (const UWORD8 *)gau1_ih264d_submb_indx_mod + (u1_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; const UWORD8 *pu1_mb_partw = (const UWORD8 *)gau1_ih264d_mb_partw; const UWORD8 *pu1_mb_parth = (const UWORD8 *)gau1_ih264d_mb_parth; UWORD8 u1_p_idx = 0; UWORD8 u1_num_submb_part; parse_part_params_t *ps_part; /* Initialisations */ mv_pred_t *ps_mv_start = ps_dec->ps_mv_cur + (u1_mb_num << 4); ps_part = ps_dec->ps_part; /* Default initialization for non subMb case */ u1_mb_part_wd = pu1_mb_partw[u1_mb_mc_mode]; u1_mb_part_ht = pu1_mb_parth[u1_mb_mc_mode]; u1_num_submb_part = 1; /* Decoding the MV for the subMB */ for(uc_lx = 0; uc_lx < 2; uc_lx++) { UWORD8 u1_sub_mb_num = 0; UWORD32 u4_mb_pred_mode_tmp = u4_mb_pred_mode; UWORD32 u4_mb_mc_mode_tmp = u4_mb_mc_mode; UWORD8 u1_mb_mc_mode_1, u1_pred_mode, uc_i; UWORD16 u2_sub_mb_num = 0x028A; UWORD8 u1_b2 = uc_lx << 1; u1_pred_mode = (uc_lx) ? PRED_L1 : PRED_L0; /* Default for Cabac */ pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_mb_mc_mode << 1); for(uc_i = 0; uc_i < u1_num_mb_part; uc_i++) { WORD8 i1_pred = (UWORD8)(u4_mb_pred_mode_tmp >> 24); u1_mb_mc_mode_1 = (UWORD8)(u4_mb_mc_mode_tmp >> 24); u4_mb_pred_mode_tmp <<= 8; u4_mb_mc_mode_tmp <<= 8; /* subMb prediction mode */ if(u1_sub_mb) { u1_mb_part_wd = pu1_sub_mb_partw[u1_mb_mc_mode_1]; u1_mb_part_ht = pu1_sub_mb_parth[u1_mb_mc_mode_1]; u1_sub_mb_num = u2_sub_mb_num >> 12; pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_mb_mc_mode_1 << 1); u1_num_submb_part = pu1_num_sub_mb_part[u1_mb_mc_mode_1]; u2_sub_mb_num = u2_sub_mb_num << 4; } for(uc_j = 0; uc_j < u1_num_submb_part; uc_j++, pu1_top_left_sub_mb_indx++) { mv_pred_t *ps_mv; u1_sub_mb_num = u1_sub_mb_num + *pu1_top_left_sub_mb_indx; ps_mv = ps_mv_start + u1_sub_mb_num; /* Storing Info for partitions, writing only once */ if(uc_lx) { ps_part->u1_is_direct = (!i1_pred); ps_part->u1_pred_mode = i1_pred; ps_part->u1_sub_mb_num = u1_sub_mb_num; ps_part->u1_partheight = u1_mb_part_ht; ps_part->u1_partwidth = u1_mb_part_wd; /* Increment partition Index */ u1_p_idx++; ps_part++; } ih264d_get_mvd_cabac(u1_sub_mb_num, u1_b2, u1_mb_part_wd, u1_mb_part_ht, (UWORD8)(i1_pred & u1_pred_mode), ps_dec, ps_mv); } } } /* write back to the scratch partition info */ ps_dec->ps_part = ps_part; ps_parse_mb_data->u1_num_part = u1_sub_mb ? u1_p_idx : u1_num_mb_part; } return OK; } /*! ************************************************************************** * \if Function name : ih264d_parse_bmb_cabac \endif * * \brief * This function parses CABAC syntax of a B MB. * * \return * 0 on Success and Error code otherwise ************************************************************************** */ WORD32 ih264d_parse_bmb_cabac(dec_struct_t * ps_dec, dec_mb_info_t * ps_cur_mb_info, UWORD8 u1_mb_num, UWORD8 u1_num_mbsNby2) { UWORD8 u1_cbp; deblk_mb_t * ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_mb_num; const UWORD8 *puc_mb_mc_mode = (const UWORD8 *)gau1_ih264d_mb_mc_mode; UWORD8 u1_mb_type = ps_cur_mb_info->u1_mb_type; ctxt_inc_mb_info_t *p_curr_ctxt = ps_dec->ps_curr_ctxt_mb_info; WORD32 ret; UWORD8 u1_Bdirect_tranform_read = 1; ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 1; ps_cur_mb_info->u1_mb_mc_mode = puc_mb_mc_mode[5 + u1_mb_type]; ps_cur_mb_info->u1_yuv_dc_block_flag = 0; ps_cur_deblk_mb->u1_mb_type |= D_B_SLICE; if(u1_mb_type != B_DIRECT) { ret = ih264d_parse_bmb_non_direct_cabac(ps_dec, ps_cur_mb_info, u1_mb_num, u1_num_mbsNby2); if(ret != OK) return ret; } else { /************ STORING PARTITION INFO ***********/ parse_part_params_t * ps_part_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++; p_curr_ctxt->u1_mb_type = CAB_BD16x16; MEMSET_16BYTES(&ps_dec->pu1_left_mv_ctxt_inc[0][0], 0); memset(ps_dec->pi1_left_ref_idx_ctxt_inc, 0, 4); MEMSET_16BYTES(p_curr_ctxt->u1_mv, 0); memset(p_curr_ctxt->i1_ref_idx, 0, 4); /* check whether transform8x8 u4_flag to be read or not */ u1_Bdirect_tranform_read = ps_dec->s_high_profile.u1_direct_8x8_inference_flag; } /* Read the Coded block pattern */ u1_cbp = (WORD8)ih264d_parse_ctx_cbp_cabac(ps_dec); p_curr_ctxt->u1_cbp = u1_cbp; ps_cur_mb_info->u1_cbp = u1_cbp; if(u1_cbp > 47) return ERROR_CBP; COPYTHECONTEXT("coded_block_pattern", u1_cbp); ps_cur_mb_info->u1_tran_form8x8 = 0; ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0; if((ps_dec->s_high_profile.u1_transform8x8_present) && (u1_cbp & (0xf)) && (ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag) && (u1_Bdirect_tranform_read)) { 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); ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = ps_cur_mb_info->u1_tran_form8x8; p_curr_ctxt->u1_transform8x8_ctxt = ps_cur_mb_info->u1_tran_form8x8; } else { p_curr_ctxt->u1_transform8x8_ctxt = 0; } 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; /* 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) { ret = ih264d_update_qp(ps_dec, c_temp); if(ret != OK) return ret; } } else ps_dec->i1_prev_mb_qp_delta = 0; ih264d_parse_residual4x4_cabac(ps_dec, ps_cur_mb_info, 0); if(EXCEED_OFFSET(ps_dec->ps_bitstrm)) return ERROR_EOB_TERMINATE_T; return OK; } /*! ************************************************************************** * \if Function name : ih264d_parse_bmb_cavlc \endif * * \brief * This function parses CAVLC syntax of a B MB. * * \return * 0 on Success and Error code otherwise ************************************************************************** */ WORD32 ih264d_parse_bmb_cavlc(dec_struct_t * ps_dec, dec_mb_info_t * ps_cur_mb_info, UWORD8 u1_mb_num, UWORD8 u1_num_mbsNby2) { UWORD32 u4_cbp; deblk_mb_t * ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_mb_num; 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; const UWORD8 *puc_mb_mc_mode = (const UWORD8 *)gau1_ih264d_mb_mc_mode; UWORD8 u1_mb_type = ps_cur_mb_info->u1_mb_type; WORD32 ret; UWORD8 u1_Bdirect_tranform_read = 1; ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 1; ps_cur_mb_info->u1_tran_form8x8 = 0; ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0; ps_cur_mb_info->u1_yuv_dc_block_flag = 0; ps_cur_mb_info->u1_mb_mc_mode = puc_mb_mc_mode[5 + u1_mb_type]; ps_cur_deblk_mb->u1_mb_type |= D_B_SLICE; if(u1_mb_type != B_DIRECT) { ret = ih264d_parse_bmb_non_direct_cavlc(ps_dec, ps_cur_mb_info, u1_mb_num, u1_num_mbsNby2); if(ret != OK) return ret; } else { /************ STORING PARTITION INFO ***********/ parse_part_params_t * ps_part_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++; /* check whether transform8x8 u4_flag to be read or not */ u1_Bdirect_tranform_read = ps_dec->s_high_profile.u1_direct_8x8_inference_flag; } /* Read the Coded block pattern */ { const UWORD8 * puc_CbpInter = gau1_ih264d_cbp_inter; //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; u4_cbp = ((1 << u4_ldz) + u4_word - 1); //Inlined ih264d_uev if(u4_cbp > 47) return ERROR_CBP; u4_cbp = puc_CbpInter[u4_cbp]; if((ps_dec->s_high_profile.u1_transform8x8_present) && (u4_cbp & (0xf)) && (ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag) && (u1_Bdirect_tranform_read)) { 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; } } COPYTHECONTEXT("coded_block_pattern", u4_cbp); ps_cur_mb_info->u1_cbp = u4_cbp; /* Read mb_qp_delta */ if(u4_cbp) { WORD32 i_temp; //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) i_temp = (-(WORD32)u4_abs_val); else i_temp = (u4_abs_val); if(i_temp < -26 || i_temp > 25) return ERROR_INV_RANGE_QP_T; //inlinined ih264d_sev COPYTHECONTEXT("mb_qp_delta", i_temp); if(i_temp) { ret = ih264d_update_qp(ps_dec, (WORD8)i_temp); if(ret != OK) return ret; } ret = ih264d_parse_residual4x4_cavlc(ps_dec, ps_cur_mb_info, 0); if(ret != OK) return ret; if(EXCEED_OFFSET(ps_bitstrm)) return ERROR_EOB_TERMINATE_T; } else { ps_dec->i1_prev_mb_qp_delta = 0; ih264d_update_nnz_for_skipmb(ps_dec, ps_cur_mb_info, CAVLC); } return OK; } WORD32 ih264d_mv_pred_ref_tfr_nby2_bmb(dec_struct_t * ps_dec, UWORD8 u1_mb_idx, UWORD8 u1_num_mbs) { parse_pmbarams_t * ps_mb_part_info; parse_part_params_t * ps_part; mv_pred_t *ps_mv_nmb, *ps_mv_nmb_start, *ps_mv_ntop, *ps_mv_ntop_start; pic_buffer_t * ps_ref_frame; UWORD8 u1_direct_mode_width; UWORD8 i, j; dec_mb_info_t * ps_cur_mb_info; const UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag; UWORD8 u1_field; WORD32 ret = 0; ps_dec->i4_submb_ofst -= (u1_num_mbs - u1_mb_idx) << 4; ps_mb_part_info = ps_dec->ps_parse_mb_data; ps_part = ps_dec->ps_parse_part_params; /* N/2 Mb MvPred and Transfer Setup Loop */ for(i = u1_mb_idx; i < u1_num_mbs; i++, ps_mb_part_info++) { UWORD8 u1_colz = 0; ps_dec->i4_submb_ofst += SUB_BLK_SIZE; /* Restore the slice scratch MbX and MbY context */ ps_cur_mb_info = ps_dec->ps_nmb_info + i; u1_field = ps_cur_mb_info->u1_mb_field_decodingflag; ps_mv_nmb_start = ps_dec->ps_mv_cur + (i << 4); ps_dec->u2_mbx = ps_cur_mb_info->u2_mbx; ps_dec->u2_mby = ps_cur_mb_info->u2_mby; ps_dec->u1_currB_type = 0; ps_dec->u2_mv_2mb[i & 0x1] = 0; /* Look for MV Prediction and Reference Transfer in Non-I Mbs */ if(!ps_mb_part_info->u1_isI_mb) { UWORD8 u1_blk_no; WORD16 i1_ref_idx, i1_ref_idx1; UWORD8 u1_pred_mode; UWORD8 u1_sub_mb_x, u1_sub_mb_y, u1_sub_mb_num; UWORD8 u1_lx, u1_lx_start, u1_lxend, u1_tmp_lx; UWORD8 u1_num_part, u1_num_ref, u1_wd, u1_ht; UWORD32 *pu4_wt_offst; UWORD8 u1_scale_ref, u4_bot_mb; deblk_mb_t * ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + i; WORD8 (*pi1_ref_idx)[MAX_REFIDX_INFO_PER_MB] = ps_mb_part_info->i1_ref_idx; WORD8 *pi1_ref_idx0 = pi1_ref_idx[0], *pi1_ref_idx1 = pi1_ref_idx[1]; UWORD32 **ppu4_wt_ofst = ps_mb_part_info->pu4_wt_offst; /* MB Level initialisations */ ps_dec->u4_num_pmbair = i >> u1_mbaff; ps_dec->u1_mb_idx_mv = i; /* CHANGED CODE */ ps_mv_ntop_start = ps_mv_nmb_start - (ps_dec->u2_frm_wd_in_mbs << (4 + u1_mbaff)) + 12; u1_num_part = ps_mb_part_info->u1_num_part; ps_cur_deblk_mb->u1_mb_type |= (u1_num_part > 1) << 1; u1_direct_mode_width = (1 == ps_mb_part_info->u1_num_part) ? 16 : 8; ps_cur_mb_info->u4_pred_info_pkd_idx = ps_dec->u4_pred_info_pkd_idx; ps_cur_mb_info->u1_num_pred_parts = 0; /****************************************************/ /* weighted u4_ofst pointer calculations, this loop */ /* runs maximum 4 times, even in direct cases */ /****************************************************/ u1_scale_ref = u1_mbaff & ps_cur_mb_info->u1_mb_field_decodingflag; u4_bot_mb = 1 - ps_cur_mb_info->u1_topmb; if(ps_dec->ps_cur_pps->u1_wted_bipred_idc) { u1_num_ref = MIN(u1_num_part, 4); if(PART_DIRECT_16x16 != ps_part->u1_is_direct) { for(u1_blk_no = 0; u1_blk_no < u1_num_ref; u1_blk_no++) { i1_ref_idx = MAX(pi1_ref_idx0[u1_blk_no], 0); if(u1_scale_ref) i1_ref_idx >>= 1; i1_ref_idx *= ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1]; if(u1_scale_ref) i1_ref_idx += (MAX(pi1_ref_idx1[u1_blk_no], 0) >> 1); else i1_ref_idx += MAX(pi1_ref_idx1[u1_blk_no], 0); pu4_wt_offst = (UWORD32*)&ps_dec->pu4_wt_ofsts[2 * X3(i1_ref_idx)]; if(pi1_ref_idx0[u1_blk_no] < 0) pu4_wt_offst += 1; ppu4_wt_ofst[u1_blk_no] = pu4_wt_offst; if(u1_scale_ref && (ps_dec->ps_cur_pps->u1_wted_bipred_idc == 2)) { i1_ref_idx = MAX(pi1_ref_idx0[u1_blk_no], 0); i1_ref_idx *= (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1] << 1); i1_ref_idx += MAX(pi1_ref_idx1[u1_blk_no], 0); if(u4_bot_mb) { i1_ref_idx += (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0] << 1) * (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1] << 1); } pu4_wt_offst = (UWORD32*)&ps_dec->pu4_mbaff_wt_mat[2 * X3(i1_ref_idx)]; ppu4_wt_ofst[u1_blk_no] = pu4_wt_offst; } } } } /**************************************************/ /* Loop on Partitions */ /* direct mode is reflected as a single partition */ /**************************************************/ for(j = 0; j < u1_num_part; j++, ps_part++) { u1_sub_mb_num = ps_part->u1_sub_mb_num; ps_dec->u1_sub_mb_num = u1_sub_mb_num; if(PART_NOT_DIRECT != ps_part->u1_is_direct) { /**************************************************/ /* Direct Mode, Call DecodeSpatial/TemporalDirect */ /* only (those will in turn call FormMbPartInfo) */ /**************************************************/ ret = ps_dec->ps_cur_slice->pf_decodeDirect(ps_dec, u1_direct_mode_width, ps_cur_mb_info, i); if(ret != OK) return ret; ps_cur_deblk_mb->u1_mb_type |= (ps_dec->u1_currB_type << 1); } else { mv_pred_t s_mvPred; /**************************************************/ /* Non Direct Mode, Call Motion Vector Predictor */ /* and FormMbpartInfo */ /**************************************************/ u1_sub_mb_x = u1_sub_mb_num & 0x03; u1_sub_mb_y = u1_sub_mb_num >> 2; u1_blk_no = (u1_num_part < 4) ? j : (((u1_sub_mb_y >> 1) << 1) + (u1_sub_mb_x >> 1)); ps_mv_ntop = ps_mv_ntop_start + u1_sub_mb_x; ps_mv_nmb = ps_mv_nmb_start + u1_sub_mb_num; u1_pred_mode = ps_part->u1_pred_mode; u1_wd = ps_part->u1_partwidth; u1_ht = ps_part->u1_partheight; u1_lx_start = 0; u1_lxend = 2; if( PRED_L0 == u1_pred_mode) { s_mvPred.i2_mv[2] = 0; s_mvPred.i2_mv[3] = 0; u1_lxend = 1; } if( PRED_L1 == u1_pred_mode) { s_mvPred.i2_mv[0] = 0; s_mvPred.i2_mv[1] = 0; u1_lx_start = 1; } /* Populate the colpic info and reference frames */ s_mvPred.i1_ref_frame[0] = pi1_ref_idx0[u1_blk_no]; s_mvPred.i1_ref_frame[1] = pi1_ref_idx1[u1_blk_no]; ps_dec->pf_mvpred(ps_dec, ps_cur_mb_info, ps_mv_nmb, ps_mv_ntop, &s_mvPred, u1_sub_mb_num, u1_wd, u1_lx_start, u1_lxend, ps_cur_mb_info->u1_mb_mc_mode); /**********************************************************/ /* Loop on number of predictors, 1 Each for Forw Backw */ /* Loop 2 times for BiDirect mode */ /**********************************************************/ for(u1_lx = u1_lx_start; u1_lx < u1_lxend; u1_lx++) { WORD16 i2_mv_x, i2_mv_y; /********************************************************/ /* Predict Mv */ /* Add Mv Residuals and store back */ /********************************************************/ i1_ref_idx = s_mvPred.i1_ref_frame[u1_lx]; u1_tmp_lx = (u1_lx << 1); i2_mv_x = ps_mv_nmb->i2_mv[u1_tmp_lx]; i2_mv_y = ps_mv_nmb->i2_mv[u1_tmp_lx + 1]; i2_mv_x += s_mvPred.i2_mv[u1_tmp_lx]; i2_mv_y += s_mvPred.i2_mv[u1_tmp_lx + 1]; s_mvPred.i2_mv[u1_tmp_lx] = i2_mv_x; s_mvPred.i2_mv[u1_tmp_lx + 1] = i2_mv_y; /********************************************************/ /* Transfer setup call */ /* convert RefIdx if it is MbAff */ /* Pass Weight Offset and refFrame */ /********************************************************/ i1_ref_idx1 = i1_ref_idx >> u1_scale_ref; if(u1_scale_ref && ((i1_ref_idx & 0x01) != u4_bot_mb)) i1_ref_idx1 += MAX_REF_BUFS; ps_ref_frame = ps_dec->ps_ref_pic_buf_lx[u1_lx][i1_ref_idx1]; /* Storing Colocated-Zero u4_flag */ if(u1_lx == u1_lx_start) { /* Fill colocated info in MvPred structure */ s_mvPred.u1_col_ref_pic_idx = ps_ref_frame->u1_mv_buf_id; s_mvPred.u1_pic_type = ps_ref_frame->u1_pic_type; /* Calculating colocated zero information */ u1_colz = (u1_field << 1) | ((i1_ref_idx == 0) && (ABS(i2_mv_x) <= 1) && (ABS(i2_mv_y) <= 1)); u1_colz |= ps_mb_part_info->u1_col_info[u1_blk_no]; } pu4_wt_offst = ppu4_wt_ofst[u1_blk_no]; { pred_info_pkd_t *ps_pred_pkd; WORD16 i2_mv[2]; i2_mv[0] = i2_mv_x; i2_mv[1] = i2_mv_y; ps_pred_pkd = ps_dec->ps_pred_pkd + ps_dec->u4_pred_info_pkd_idx; ih264d_fill_pred_info(i2_mv,u1_wd,u1_ht,u1_sub_mb_num,u1_pred_mode, ps_pred_pkd,ps_ref_frame->u1_pic_buf_id,i1_ref_idx,pu4_wt_offst, ps_ref_frame->u1_pic_type); ps_dec->u4_pred_info_pkd_idx++; ps_cur_mb_info->u1_num_pred_parts++; } } ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb, u1_sub_mb_num, u1_colz, u1_ht, u1_wd); } } } else { /* Set zero values in case of Intra Mbs */ mv_pred_t s_mvPred = { { 0, 0, 0, 0 }, { -1, -1 }, 0, 0}; /* Storing colocated zero information */ ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0, (UWORD8)(u1_field << 1), 4, 4); } /*if num _cores is set to 3 ,compute bs will be done in another thread*/ if(ps_dec->u4_num_cores < 3) { if(ps_dec->u4_app_disable_deblk_frm == 0) ps_dec->pf_compute_bs(ps_dec, ps_cur_mb_info, (UWORD16)(i >> u1_mbaff)); } } return OK; } /*! ************************************************************************** * \if Function name : ih264d_get_implicit_weights \endif * * \brief * Calculates Implicit Weights. * * \return * None * ************************************************************************** */ void ih264d_get_implicit_weights(dec_struct_t *ps_dec) { UWORD32 *pu4_iwt_ofst; UWORD8 i, j; struct pic_buffer_t *ps_pic_buff0, *ps_pic_buff1; WORD16 i2_dist_scale_factor; WORD16 i16_tb, i16_td, i16_tx; UWORD32 u4_poc0, u4_poc1; UWORD32 ui_temp0, ui_temp1; UWORD8 uc_num_ref_idx_l0_active, uc_num_ref_idx_l1_active; pu4_iwt_ofst = ps_dec->pu4_wts_ofsts_mat; uc_num_ref_idx_l0_active = ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0]; uc_num_ref_idx_l1_active = ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1]; for(i = 0; i < uc_num_ref_idx_l0_active; i++) { ps_pic_buff0 = ps_dec->ps_ref_pic_buf_lx[0][i]; u4_poc0 = ps_pic_buff0->i4_avg_poc; for(j = 0; j < uc_num_ref_idx_l1_active; j++) { ps_pic_buff1 = ps_dec->ps_ref_pic_buf_lx[1][j]; u4_poc1 = ps_pic_buff1->i4_avg_poc; if(u4_poc1 != u4_poc0) { i16_tb = ps_dec->ps_cur_pic->i4_poc - u4_poc0; i16_tb = CLIP3(-128, 127, i16_tb); i16_td = u4_poc1 - u4_poc0; i16_td = CLIP3(-128, 127, i16_td); i16_tx = (16384 + ABS(SIGN_POW2_DIV(i16_td, 1))) / i16_td; i2_dist_scale_factor = CLIP3(-1024, 1023, (((i16_tb * i16_tx) + 32) >> 6)); if(/*((u4_poc1 - u4_poc0) == 0) ||*/ (!(ps_pic_buff1->u1_is_short && ps_pic_buff0->u1_is_short)) || ((i2_dist_scale_factor >> 2) < -64) || ((i2_dist_scale_factor >> 2) > 128)) { /* same for forward and backward, wt=32 and Offset = 0 */ ui_temp0 = 0x00000020; ui_temp1 = 0x00000020; } else { ui_temp0 = 64 - (i2_dist_scale_factor >> 2); ui_temp1 = (i2_dist_scale_factor >> 2); } } else { ui_temp0 = 0x00000020; ui_temp1 = 0x00000020; } pu4_iwt_ofst[0] = pu4_iwt_ofst[2] = pu4_iwt_ofst[4] = ui_temp0; pu4_iwt_ofst[1] = pu4_iwt_ofst[3] = pu4_iwt_ofst[5] = ui_temp1; pu4_iwt_ofst += 6; } } if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag) { UWORD8 k; WORD32 i4_cur_poc = ps_dec->ps_cur_pic->i4_top_field_order_cnt; UWORD32* pu4_wt_mat = ps_dec->pu4_mbaff_wt_mat; /* Form the Implicit Weighted prediction matrix for field MBs also */ for(k = 0; k < 2; k++) { for(i = 0; i < (uc_num_ref_idx_l0_active << 1); i++) { UWORD16 u2_l0_idx; /*u2_l0_idx = (i >= uc_num_ref_idx_l0_active) ?(MAX_REF_BUFS + i - uc_num_ref_idx_l0_active) : (i) ;*/ u2_l0_idx = i >> 1; if((i & 0x01) != k) { u2_l0_idx += MAX_REF_BUFS; } ps_pic_buff0 = ps_dec->ps_ref_pic_buf_lx[0][u2_l0_idx]; u4_poc0 = ps_pic_buff0->i4_poc; for(j = 0; j < (uc_num_ref_idx_l1_active << 1); j++) { UWORD16 u2_l1_idx; /*u2_l1_idx = (j >= uc_num_ref_idx_l1_active) ? (MAX_REF_BUFS + j - uc_num_ref_idx_l1_active ) : (j) ;*/ u2_l1_idx = j >> 1; if((j & 0x01) != k) { u2_l1_idx += MAX_REF_BUFS; } ps_pic_buff1 = ps_dec->ps_ref_pic_buf_lx[1][u2_l1_idx]; u4_poc1 = ps_pic_buff1->i4_poc; if(u4_poc1 != u4_poc0) { i16_tb = i4_cur_poc - u4_poc0; i16_tb = CLIP3(-128, 127, i16_tb); i16_td = u4_poc1 - u4_poc0; i16_td = CLIP3(-128, 127, i16_td); i16_tx = (16384 + ABS(SIGN_POW2_DIV(i16_td, 1))) / i16_td; i2_dist_scale_factor = CLIP3( -1024, 1023, (((i16_tb * i16_tx) + 32) >> 6)); if(/*((u4_poc1 - u4_poc0) == 0) ||*/ (!(ps_pic_buff1->u1_is_short && ps_pic_buff0->u1_is_short)) || ((i2_dist_scale_factor >> 2) < -64) || ((i2_dist_scale_factor >> 2) > 128)) { /* same for forward and backward, wt=32 and Offset = 0 */ ui_temp0 = 0x00000020; ui_temp1 = 0x00000020; } else { ui_temp0 = 64 - (i2_dist_scale_factor >> 2); ui_temp1 = (i2_dist_scale_factor >> 2); } } else { ui_temp0 = 0x00000020; ui_temp1 = 0x00000020; } /* Store in the weight matrix */ *pu4_wt_mat++ = ui_temp0; *pu4_wt_mat++ = ui_temp1; *pu4_wt_mat++ = ui_temp0; *pu4_wt_mat++ = ui_temp1; *pu4_wt_mat++ = ui_temp0; *pu4_wt_mat++ = ui_temp1; } } i4_cur_poc = ps_dec->ps_cur_pic->i4_bottom_field_order_cnt; } } } /*! ************************************************************************** * \if Function name : ih264d_decode_bslice \endif * * \brief * Decodes a B Slice * * * \return * 0 on Success and Error code otherwise ************************************************************************** */ WORD32 ih264d_parse_bslice(dec_struct_t * ps_dec, UWORD16 u2_first_mb_in_slice) { dec_pic_params_t * ps_pps = ps_dec->ps_cur_pps; dec_slice_params_t * ps_slice = ps_dec->ps_cur_slice; dec_bit_stream_t * ps_bitstrm = ps_dec->ps_bitstrm; UWORD8 u1_ref_idx_re_flag_lx; UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst; UWORD32 u4_temp, ui_temp1; WORD32 i_temp; WORD32 ret; /*--------------------------------------------------------------------*/ /* Read remaining contents of the slice header */ /*--------------------------------------------------------------------*/ { WORD8 *pi1_buf; WORD16 *pi2_mv = ps_dec->s_default_mv_pred.i2_mv; WORD32 *pi4_mv = (WORD32*)pi2_mv; WORD16 *pi16_refFrame; pi1_buf = ps_dec->s_default_mv_pred.i1_ref_frame; pi16_refFrame = (WORD16*)pi1_buf; *pi4_mv = 0; *(pi4_mv + 1) = 0; *pi16_refFrame = OUT_OF_RANGE_REF; ps_dec->s_default_mv_pred.u1_col_ref_pic_idx = (UWORD8)-1; ps_dec->s_default_mv_pred.u1_pic_type = (UWORD8)-1; } ps_slice->u1_num_ref_idx_active_override_flag = ih264d_get_bit_h264( ps_bitstrm); COPYTHECONTEXT("SH: num_ref_idx_override_flag", ps_slice->u1_num_ref_idx_active_override_flag); u4_temp = ps_dec->ps_cur_pps->u1_num_ref_idx_lx_active[0]; ui_temp1 = ps_dec->ps_cur_pps->u1_num_ref_idx_lx_active[1]; if(ps_slice->u1_num_ref_idx_active_override_flag) { u4_temp = 1 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); COPYTHECONTEXT("SH: num_ref_idx_l0_active_minus1", u4_temp - 1); ui_temp1 = 1 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); COPYTHECONTEXT("SH: num_ref_idx_l1_active_minus1", ui_temp1 - 1); } { UWORD8 u1_max_ref_idx = MAX_FRAMES; if(ps_slice->u1_field_pic_flag) { u1_max_ref_idx = MAX_FRAMES << 1; } if((u4_temp > u1_max_ref_idx) || (ui_temp1 > u1_max_ref_idx)) { return ERROR_NUM_REF; } ps_slice->u1_num_ref_idx_lx_active[0] = u4_temp; ps_slice->u1_num_ref_idx_lx_active[1] = ui_temp1; } /* Initialize the Reference list once in Picture if the slice type */ /* of first slice is between 5 to 9 defined in table 7.3 of standard */ /* If picture contains both P & B slices then Initialize the Reference*/ /* List only when it switches from P to B and B to P */ { UWORD8 init_idx_flg = (ps_dec->u1_pr_sl_type != ps_dec->ps_cur_slice->u1_slice_type); if(ps_dec->u1_first_pb_nal_in_pic || (init_idx_flg & !ps_dec->u1_sl_typ_5_9) || ps_dec->u1_num_ref_idx_lx_active_prev != ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0]) ih264d_init_ref_idx_lx_b(ps_dec); if(ps_dec->u1_first_pb_nal_in_pic & ps_dec->u1_sl_typ_5_9) ps_dec->u1_first_pb_nal_in_pic = 0; } /* Store the value for future slices in the same picture */ ps_dec->u1_num_ref_idx_lx_active_prev = ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0]; u1_ref_idx_re_flag_lx = ih264d_get_bit_h264(ps_bitstrm); COPYTHECONTEXT("SH: ref_pic_list_reordering_flag_l0",u1_ref_idx_re_flag_lx); /* Modified temporarily */ if(u1_ref_idx_re_flag_lx) { 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; } else ps_dec->ps_ref_pic_buf_lx[0] = ps_dec->ps_dpb_mgr->ps_init_dpb[0]; u1_ref_idx_re_flag_lx = ih264d_get_bit_h264(ps_bitstrm); COPYTHECONTEXT("SH: ref_pic_list_reordering_flag_l1",u1_ref_idx_re_flag_lx); /* Modified temporarily */ if(u1_ref_idx_re_flag_lx) { WORD8 ret; ps_dec->ps_ref_pic_buf_lx[1] = ps_dec->ps_dpb_mgr->ps_mod_dpb[1]; ret = ih264d_ref_idx_reordering(ps_dec, 1); if(ret == -1) return ERROR_REFIDX_ORDER_T; } else ps_dec->ps_ref_pic_buf_lx[1] = ps_dec->ps_dpb_mgr->ps_init_dpb[1]; /* Create refIdx to POC mapping */ { void **ppv_map_ref_idx_to_poc_lx; WORD8 idx; struct pic_buffer_t *ps_pic; ppv_map_ref_idx_to_poc_lx = ps_dec->ppv_map_ref_idx_to_poc + FRM_LIST_L0; ppv_map_ref_idx_to_poc_lx[0] = 0; ppv_map_ref_idx_to_poc_lx++; for(idx = 0; idx < ps_dec->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[idx] = (ps_pic->pu1_buf1); } ppv_map_ref_idx_to_poc_lx = ps_dec->ppv_map_ref_idx_to_poc + FRM_LIST_L1; ppv_map_ref_idx_to_poc_lx[0] = 0; ppv_map_ref_idx_to_poc_lx++; for(idx = 0; idx < ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1]; idx++) { ps_pic = ps_dec->ps_ref_pic_buf_lx[1][idx]; ppv_map_ref_idx_to_poc_lx[idx] = (ps_pic->pu1_buf1); } if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag) { void **ppv_map_ref_idx_to_poc_lx_t, **ppv_map_ref_idx_to_poc_lx_b; 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++; for(idx = 0; idx < ps_dec->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_t = ps_dec->ppv_map_ref_idx_to_poc + TOP_LIST_FLD_L1; ppv_map_ref_idx_to_poc_lx_b = ps_dec->ppv_map_ref_idx_to_poc + BOT_LIST_FLD_L1; 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++; for(idx = 0; idx < ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1]; idx++) { UWORD8 u1_tmp_idx = idx << 1; ps_pic = ps_dec->ps_ref_pic_buf_lx[1][idx]; ppv_map_ref_idx_to_poc_lx_t[u1_tmp_idx] = (ps_pic->pu1_buf1); ppv_map_ref_idx_to_poc_lx_b[u1_tmp_idx + 1] = (ps_pic->pu1_buf1); ppv_map_ref_idx_to_poc_lx_b[u1_tmp_idx] = (ps_pic->pu1_buf1) + 1; ppv_map_ref_idx_to_poc_lx_t[u1_tmp_idx + 1] = (ps_pic->pu1_buf1) + 1; } } if(ps_dec->u4_num_cores >= 3) { WORD32 num_entries; WORD32 size; num_entries = MAX_FRAMES; if((1 >= ps_dec->ps_cur_sps->u1_num_ref_frames) && (0 == ps_dec->i4_display_delay)) { num_entries = 1; } num_entries = ((2 * num_entries) + 1); if(BASE_PROFILE_IDC != ps_dec->ps_cur_sps->u1_profile_idc) { 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_dec->ps_cur_slice->u1_mbaff_frame_flag && (ps_dec->ps_cur_slice->u1_field_pic_flag == 0)) { ih264d_convert_frm_mbaff_list(ps_dec); } if(ps_pps->u1_wted_bipred_idc == 1) { ret = ih264d_parse_pred_weight_table(ps_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 if(ps_pps->u1_wted_bipred_idc == 2) { /* Implicit Weighted prediction */ ps_slice->u2_log2Y_crwd = 0x0505; ps_dec->pu4_wt_ofsts = ps_dec->pu4_wts_ofsts_mat; ih264d_get_implicit_weights(ps_dec); } else ps_dec->ps_cur_slice->u2_log2Y_crwd = 0; ps_dec->ps_parse_cur_slice->u2_log2Y_crwd = ps_dec->ps_cur_slice->u2_log2Y_crwd; /* G050 */ if(ps_slice->u1_nal_ref_idc != 0) { if(!ps_dec->ps_dpb_cmds->u1_dpb_commands_read) { i_temp = ih264d_read_mmco_commands(ps_dec); if (i_temp < 0) { return ERROR_DBP_MANAGER_T; } ps_dec->u4_bitoffset = i_temp; } else ps_bitstrm->u4_ofst += ps_dec->u4_bitoffset; } /* G050 */ if(ps_pps->u1_entropy_coding_mode == CABAC) { u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); if(u4_temp > MAX_CABAC_INIT_IDC) { return ERROR_INV_SLICE_HDR_T; } ps_slice->u1_cabac_init_idc = u4_temp; COPYTHECONTEXT("SH: cabac_init_idc",ps_slice->u1_cabac_init_idc); } /* Read slice_qp_delta */ i_temp = ps_pps->u1_pic_init_qp + ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf); if((i_temp < 0) || (i_temp > 51)) { return ERROR_INV_RANGE_QP_T; } ps_slice->u1_slice_qp = i_temp; COPYTHECONTEXT("SH: slice_qp_delta", (WORD8)(ps_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_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_slice->i1_slice_alpha_c0_offset = i_temp; COPYTHECONTEXT("SH: slice_alpha_c0_offset_div2", ps_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_slice->i1_slice_beta_offset = i_temp; COPYTHECONTEXT("SH: slice_beta_offset_div2", ps_slice->i1_slice_beta_offset >> 1); } else { ps_slice->i1_slice_alpha_c0_offset = 0; ps_slice->i1_slice_beta_offset = 0; } } else { ps_slice->u1_disable_dblk_filter_idc = 0; ps_slice->i1_slice_alpha_c0_offset = 0; ps_slice->i1_slice_beta_offset = 0; } ps_dec->u1_slice_header_done = 2; if(ps_pps->u1_entropy_coding_mode) { SWITCHOFFTRACE; SWITCHONTRACECABAC; ps_dec->pf_parse_inter_slice = ih264d_parse_inter_slice_data_cabac; ps_dec->pf_parse_inter_mb = ih264d_parse_bmb_cabac; ih264d_init_cabac_contexts(B_SLICE, ps_dec); if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag) ps_dec->pf_get_mb_info = ih264d_get_mb_info_cabac_mbaff; else ps_dec->pf_get_mb_info = ih264d_get_mb_info_cabac_nonmbaff; } else { SWITCHONTRACE; SWITCHOFFTRACECABAC; ps_dec->pf_parse_inter_slice = ih264d_parse_inter_slice_data_cavlc; ps_dec->pf_parse_inter_mb = ih264d_parse_bmb_cavlc; if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag) ps_dec->pf_get_mb_info = ih264d_get_mb_info_cavlc_mbaff; else ps_dec->pf_get_mb_info = ih264d_get_mb_info_cavlc_nonmbaff; } ret = ih264d_cal_col_pic(ps_dec); if(ret != OK) return ret; ps_dec->u1_B = 1; ps_dec->pf_mvpred_ref_tfr_nby2mb = ih264d_mv_pred_ref_tfr_nby2_bmb; ret = ps_dec->pf_parse_inter_slice(ps_dec, ps_slice, u2_first_mb_in_slice); if(ret != OK) return ret; return OK; }