/****************************************************************************** * * 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_eislice.c * * @brief * Contains routines that decode a EI slice type * * @author * Kishore * * @par List of Functions: * - isvcd_parse_islice_data_cabac() * - isvcd_parse_islice_data_cavlc() * - isvcd_parse_imb_cavlc() * - isvcd_parse_eislice() * - isvcd_parse_eislice_data_cabac() * - isvcd_parse_eislice_data_cavlc() * - isvcd_parse_imb_cabac() * - isvcd_parse_islice() * * @remarks * None * ******************************************************************************* */ #include #include "ih264_defs.h" #include "ih264d_error_handler.h" #include "ih264d_debug.h" #include "ih264d_bitstrm.h" #include "ih264d_defs.h" #include "ih264d_tables.h" #include "isvcd_structs.h" #include "ih264d_parse_cavlc.h" #include "ih264d_mb_utils.h" #include "ih264d_deblocking.h" #include "ih264d_cabac.h" #include "ih264d_parse_cabac.h" #include "ih264d_parse_mb_header.h" #include "ih264d_parse_slice.h" #include "ih264d_process_pslice.h" #include "isvcd_process_epslice.h" #include "ih264d_process_intra_mb.h" #include "ih264d_parse_islice.h" #include "ih264d_error_handler.h" #include "ih264d_mvpred.h" #include "ih264d_thread_parse_decode.h" #include "ithread.h" #include "ih264d_parse_mb_header.h" #include "assert.h" #include "ih264d_utils.h" #include "ih264d_format_conv.h" #include "ih264d_parse_headers.h" #include "isvcd_parse_headers.h" #include "isvcd_parse_slice.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); /*****************************************************************************/ /* */ /* Function Name : isvcd_parse_islice_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. */ /* */ /* Returns : 0 */ /* */ /* Issues : */ /* */ /* Revision History: */ /* */ /* DD MM YYYY Author(s) Changes (Describe the changes made) */ /* 24 06 2005 Kishore Draft */ /* */ /*****************************************************************************/ WORD32 isvcd_parse_islice_data_cabac(svc_dec_lyr_struct_t *ps_svc_lyr_dec, dec_slice_params_t *ps_slice, UWORD16 u2_first_mb_in_slice) { UWORD8 uc_more_data_flag; UWORD8 u1_num_mbs, u1_mb_idx; dec_mb_info_t *ps_cur_mb_info; deblk_mb_t *ps_cur_deblk_mb; dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec; dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm; UWORD16 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs; WORD16 i2_cur_mb_addr; UWORD8 u1_mbaff; UWORD8 u1_num_mbs_next, u1_end_of_row, u1_tfr_n_mb; WORD32 ret = OK; ps_dec->u1_qp = ps_slice->u1_slice_qp; ih264d_update_qp(ps_dec, 0); u1_mbaff = ps_slice->u1_mbaff_frame_flag; 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; ih264d_init_cabac_contexts(I_SLICE, ps_dec); ps_dec->i1_prev_mb_qp_delta = 0; /* initializations */ u1_mb_idx = ps_dec->u1_mb_idx; u1_num_mbs = u1_mb_idx; uc_more_data_flag = 1; i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff; do { UWORD16 u2_mbx; 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; } { UWORD8 u1_mb_type; ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs; ps_dec->u4_num_mbs_cur_nmb = u1_num_mbs; ps_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff); ps_cur_mb_info->u1_end_of_slice = 0; /***************************************************************/ /* 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, 0); u2_mbx = ps_dec->u2_mbx; /*********************************************************************/ /* 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 */ /***************************************************************/ ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs; 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); ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type | D_INTRA_MB; /* Macroblock Layer Begins */ /* Decode the u1_mb_type */ u1_mb_type = ih264d_parse_mb_type_intra_cabac(0, ps_dec); if(u1_mb_type > 25) return ERROR_MB_TYPE; ps_cur_mb_info->u1_mb_type = u1_mb_type; COPYTHECONTEXT("u1_mb_type", u1_mb_type); /* Parse Macroblock Data */ if(25 == 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 { ret = ih264d_parse_imb_cabac(ps_dec, ps_cur_mb_info, u1_mb_type); if(ret != OK) return ret; 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(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++; /* Store the colocated information */ { mv_pred_t *ps_mv_nmb_start = ps_dec->ps_mv_cur + (u1_num_mbs << 4); mv_pred_t s_mvPred = {{0, 0, 0, 0}, {-1, -1}, 0, 0}; ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0, (UWORD8) (ps_dec->u1_cur_mb_fld_dec_flag << 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_svc_lyr_dec->pf_svc_compute_bs(ps_svc_lyr_dec, ps_cur_mb_info, (UWORD16) (u1_num_mbs >> u1_mbaff)); } u1_num_mbs++; } /****************************************************************/ /* Check for End Of Row */ /****************************************************************/ u1_num_mbs_next = i2_pic_wdin_mbs - u2_mbx - 1; u1_end_of_row = (!u1_num_mbs_next) && (!(u1_mbaff && (u1_num_mbs & 0x01))); u1_tfr_n_mb = (u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row || (!uc_more_data_flag); ps_cur_mb_info->u1_end_of_slice = (!uc_more_data_flag); if(u1_tfr_n_mb || (!uc_more_data_flag)) { 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; } } while(uc_more_data_flag); 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_islice_data_cavlc */ /* */ /* 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. */ /* */ /* Returns : 0 */ /* */ /* Issues : */ /* */ /* Revision History: */ /* */ /* DD MM YYYY Author(s) Changes (Describe the changes made) */ /* 24 06 2005 Kishore Draft */ /* */ /*****************************************************************************/ WORD32 isvcd_parse_islice_data_cavlc(svc_dec_lyr_struct_t *ps_svc_lyr_dec, dec_slice_params_t *ps_slice, UWORD16 u2_first_mb_in_slice) { UWORD8 uc_more_data_flag; UWORD8 u1_num_mbs, u1_mb_idx; dec_mb_info_t *ps_cur_mb_info; deblk_mb_t *ps_cur_deblk_mb; dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec; dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm; UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst; UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; UWORD16 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs; WORD16 i2_cur_mb_addr; UWORD8 u1_mbaff; UWORD8 u1_num_mbs_next, u1_end_of_row, u1_tfr_n_mb; WORD32 ret = OK; ps_dec->u1_qp = ps_slice->u1_slice_qp; ih264d_update_qp(ps_dec, 0); u1_mbaff = ps_slice->u1_mbaff_frame_flag; /* initializations */ u1_mb_idx = ps_dec->u1_mb_idx; u1_num_mbs = u1_mb_idx; uc_more_data_flag = 1; i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff; do { 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_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff); ps_cur_mb_info->u1_end_of_slice = 0; /***************************************************************/ /* 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, 0); /***************************************************************/ /* Set the deblocking parameters for this MB */ /***************************************************************/ ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs; 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); ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type | D_INTRA_MB; /**************************************************************/ /* Macroblock Layer Begins, Decode the u1_mb_type */ /**************************************************************/ /* Inlined ih264d_uev */ { UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst; UWORD32 u4_word, u4_ldz, u4_temp; /***************************************************************/ /* 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 > 25) return ERROR_MB_TYPE; u1_mb_type = u4_temp; } /* Inlined ih264d_uev */ ps_cur_mb_info->u1_mb_type = u1_mb_type; COPYTHECONTEXT("u1_mb_type", u1_mb_type); /**************************************************************/ /* Parse Macroblock data */ /**************************************************************/ if(25 == 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 { ret = ih264d_parse_imb_cavlc(ps_dec, ps_cur_mb_info, u1_num_mbs, u1_mb_type); if(ret != OK) return ret; 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); } uc_more_data_flag = MORE_RBSP_DATA(ps_bitstrm); if(u1_mbaff) { ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info); if(!uc_more_data_flag && (0 == (i2_cur_mb_addr & 1))) { return ERROR_EOB_FLUSHBITS_T; } } /**************************************************************/ /* Get next Macroblock address */ /**************************************************************/ i2_cur_mb_addr++; /* Store the colocated information */ { mv_pred_t *ps_mv_nmb_start = ps_dec->ps_mv_cur + (u1_num_mbs << 4); mv_pred_t s_mvPred = {{0, 0, 0, 0}, {-1, -1}, 0, 0}; ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0, (UWORD8) (ps_dec->u1_cur_mb_fld_dec_flag << 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_svc_lyr_dec->pf_svc_compute_bs(ps_svc_lyr_dec, ps_cur_mb_info, (UWORD16) (u1_num_mbs >> u1_mbaff)); } u1_num_mbs++; /****************************************************************/ /* Check for End Of Row */ /****************************************************************/ 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_tfr_n_mb = (u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row || (!uc_more_data_flag); ps_cur_mb_info->u1_end_of_slice = (!uc_more_data_flag); if(u1_tfr_n_mb || (!uc_more_data_flag)) { 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; } } while(uc_more_data_flag); 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 : ParseIMb \endif * * \brief * This function parses CAVLC syntax of a I MB. If 16x16 Luma DC transform * is also done here. Transformed Luma DC values are copied in their * 0th pixel location of corrosponding CoeffBlock. * * \return * 0 on Success and Error code otherwise ************************************************************************** */ WORD32 isvcd_parse_imb_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_mb_type) { dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec; WORD32 i4_delta_qp; UWORD32 u4_temp; UWORD32 ui_is_top_mb_available; UWORD32 ui_is_left_mb_available; UWORD32 u4_cbp; UWORD32 u4_offset; UWORD32 *pu4_bitstrm_buf; WORD32 ret; dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm; UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst; UNUSED(u1_mb_num); 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; u4_temp = ps_dec->u1_mb_ngbr_availablity; ui_is_top_mb_available = BOOLEAN(u4_temp & TOP_MB_AVAILABLE_MASK); ui_is_left_mb_available = BOOLEAN(u4_temp & LEFT_MB_AVAILABLE_MASK); pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; ps_cur_mb_info->ps_curmb->u1_mb_type = P_MB; if(!ps_svc_cur_mb_info->u1_base_mode_flag) { if(u1_mb_type == I_4x4_MB) { ps_cur_mb_info->ps_curmb->u1_mb_type = I_4x4_MB; u4_offset = 0; /*--------------------------------------------------------------------*/ /* Read transform_size_8x8_flag if present */ /*--------------------------------------------------------------------*/ if(ps_dec->ps_cur_pps->i4_transform_8x8_mode_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 the IntraPrediction modes for LUMA */ /*--------------------------------------------------------------------*/ if(!ps_cur_mb_info->u1_tran_form8x8) { UWORD8 *pu1_temp; ih264d_read_intra_pred_modes(ps_dec, ((UWORD8 *) ps_dec->pv_parse_tu_coeff_data), ((UWORD8 *) ps_dec->pv_parse_tu_coeff_data + 16), ps_cur_mb_info->u1_tran_form8x8); pu1_temp = (UWORD8 *) ps_dec->pv_parse_tu_coeff_data; pu1_temp += 32; ps_dec->pv_parse_tu_coeff_data = (void *) pu1_temp; } else { UWORD8 *pu1_temp; ih264d_read_intra_pred_modes(ps_dec, ((UWORD8 *) ps_dec->pv_parse_tu_coeff_data), ((UWORD8 *) ps_dec->pv_parse_tu_coeff_data + 4), ps_cur_mb_info->u1_tran_form8x8); pu1_temp = (UWORD8 *) ps_dec->pv_parse_tu_coeff_data; pu1_temp += 8; ps_dec->pv_parse_tu_coeff_data = (void *) pu1_temp; } /*--------------------------------------------------------------------*/ /* Read the IntraPrediction mode for CHROMA */ /*--------------------------------------------------------------------*/ /* Inlined ih264d_uev */ { UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst; UWORD32 u4_word, u4_ldz, u4_temp; /***************************************************************/ /* 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 > 3) { return ERROR_CHROMA_PRED_MODE; } ps_cur_mb_info->u1_chroma_pred_mode = u4_temp; COPYTHECONTEXT("intra_chroma_pred_mode", ps_cur_mb_info->u1_chroma_pred_mode); } /*--------------------------------------------------------------------*/ /* 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 = gau1_ih264d_cbp_table[u4_cbp][0]; COPYTHECONTEXT("coded_block_pattern", u4_cbp); ps_cur_mb_info->u1_cbp = u4_cbp; /*--------------------------------------------------------------------*/ /* Read mb_qp_delta */ /*--------------------------------------------------------------------*/ if(ps_cur_mb_info->u1_cbp) { 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) { i4_delta_qp = (-(WORD32) u4_abs_val); } else { i4_delta_qp = (u4_abs_val); } if((i4_delta_qp < -26) || (i4_delta_qp > 25)) { return ERROR_INV_RANGE_QP_T; } COPYTHECONTEXT("mb_qp_delta", i1_delta_qp); if(i4_delta_qp != 0) { ret = ih264d_update_qp(ps_dec, (WORD8) i4_delta_qp); if(ret != OK) return ret; } } } else { u4_offset = 1; ps_cur_mb_info->ps_curmb->u1_mb_type = I_16x16_MB; /*-------------------------------------------------------------------*/ /* Read the IntraPrediction mode for CHROMA */ /*-------------------------------------------------------------------*/ { 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_temp = ((1 << u4_ldz) + u4_word - 1); /* Inlined ih264d_uev */ if(u4_temp > 3) { return ERROR_CHROMA_PRED_MODE; } ps_cur_mb_info->u1_chroma_pred_mode = u4_temp; COPYTHECONTEXT("intra_chroma_pred_mode", ps_cur_mb_info->u1_chroma_pred_mode); } /*-------------------------------------------------------------------*/ /* Read the Coded block pattern */ /*-------------------------------------------------------------------*/ u4_cbp = gau1_ih264d_cbp_tab[(u1_mb_type - 1) >> 2]; ps_cur_mb_info->u1_cbp = u4_cbp; /*-------------------------------------------------------------------*/ /* Read mb_qp_delta */ /*-------------------------------------------------------------------*/ { 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) i4_delta_qp = (-(WORD32) u4_abs_val); else i4_delta_qp = (u4_abs_val); if((i4_delta_qp < -26) || (i4_delta_qp > 25)) return ERROR_INV_RANGE_QP_T; } /* inlinined ih264d_sev */ COPYTHECONTEXT("Delta quant", i1_delta_qp); if(i4_delta_qp != 0) { ret = ih264d_update_qp(ps_dec, (WORD8) i4_delta_qp); if(ret != OK) return ret; } { WORD16 i_scaleFactor; UWORD32 ui_N = 0; WORD16 *pi2_scale_matrix_ptr; /*******************************************************************/ /* for luma DC coefficients the scaling is done during the parsing */ /* to preserve the precision */ /*******************************************************************/ if(ps_dec->s_high_profile.u1_scaling_present) { pi2_scale_matrix_ptr = ps_dec->s_high_profile.i2_scalinglist4x4[0]; } else { i_scaleFactor = 16; pi2_scale_matrix_ptr = &i_scaleFactor; } /*---------------------------------------------------------------*/ /* Decode DC coefficients */ /*---------------------------------------------------------------*/ /*---------------------------------------------------------------*/ /* Calculation of N */ /*---------------------------------------------------------------*/ if(ui_is_left_mb_available) { if(ui_is_top_mb_available) { ui_N = ((ps_cur_mb_info->ps_top_mb->pu1_nnz_y[0] + ps_dec->pu1_left_nnz_y[0] + 1) >> 1); } else { ui_N = ps_dec->pu1_left_nnz_y[0]; } } else if(ui_is_top_mb_available) { ui_N = ps_cur_mb_info->ps_top_mb->pu1_nnz_y[0]; } { WORD16 pi2_dc_coef[16] = {0}; WORD32 pi4_tmp[16] = {0}; tu_sblk4x4_coeff_data_t *ps_tu_4x4 = (tu_sblk4x4_coeff_data_t *) ps_dec->pv_parse_tu_coeff_data; WORD16 *pi2_coeff_block = (WORD16 *) ps_dec->pv_parse_tu_coeff_data; UWORD32 u4_num_coeff; ps_tu_4x4->u2_sig_coeff_map = 0; ret = ps_dec->pf_cavlc_parse4x4coeff[(ui_N > 7)](pi2_dc_coef, 0, ui_N, ps_dec, &u4_num_coeff); if(ret != OK) return ret; if(EXCEED_OFFSET(ps_bitstrm)) return ERROR_EOB_TERMINATE_T; if(ps_tu_4x4->u2_sig_coeff_map) { memset(pi2_dc_coef, 0, sizeof(pi2_dc_coef)); ih264d_unpack_coeff4x4_dc_4x4blk(ps_tu_4x4, pi2_dc_coef, ps_dec->pu1_inv_scan); PROFILE_DISABLE_IQ_IT_RECON() ps_dec->pf_ihadamard_scaling_4x4( pi2_dc_coef, pi2_coeff_block, ps_dec->pu2_quant_scale_y, (UWORD16 *) pi2_scale_matrix_ptr, ps_dec->u1_qp_y_div6, pi4_tmp); pi2_coeff_block += 16; ps_dec->pv_parse_tu_coeff_data = (void *) pi2_coeff_block; SET_BIT(ps_cur_mb_info->u1_yuv_dc_block_flag, 0); } } } } } else { ps_cur_mb_info->u1_tran_form8x8 = 0; ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0; u4_offset = 0; /*--------------------------------------------------------------------*/ /* 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; } /* inter cbp table to be used for base mode flag*/ u4_cbp = gau1_ih264d_cbp_table[u4_cbp][1]; COPYTHECONTEXT("coded_block_pattern", u4_cbp); ps_cur_mb_info->u1_cbp = u4_cbp; ps_cur_mb_info->u1_tran_form8x8 = 0; ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0; /*--------------------------------------------------------------------*/ /* Read transform_size_8x8_flag if present */ /*--------------------------------------------------------------------*/ if((ps_dec->ps_cur_pps->i4_transform_8x8_mode_flag) && (ps_cur_mb_info->u1_cbp & 0xf)) { 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(ps_cur_mb_info->u1_cbp) { 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) { i4_delta_qp = (-(WORD32) u4_abs_val); } else { i4_delta_qp = (u4_abs_val); } if((i4_delta_qp < -26) || (i4_delta_qp > 25)) { return ERROR_INV_RANGE_QP_T; } COPYTHECONTEXT("mb_qp_delta", i4_delta_qp); if(i4_delta_qp != 0) { ret = ih264d_update_qp(ps_dec, (WORD8) i4_delta_qp); if(ret != OK) return ret; } } } if(u4_cbp) { ret = ih264d_parse_residual4x4_cavlc(ps_dec, ps_cur_mb_info, (UWORD8) u4_offset); if(ret != OK) return ret; if(EXCEED_OFFSET(ps_bitstrm)) return ERROR_EOB_TERMINATE_T; /* Store Left Mb NNZ and TOP chroma NNZ */ } else { ps_cur_mb_info->u1_qp_div6 = ps_dec->u1_qp_y_div6; ps_cur_mb_info->u1_qpc_div6 = ps_dec->u1_qp_u_div6; ps_cur_mb_info->u1_qpcr_div6 = ps_dec->u1_qp_v_div6; ps_cur_mb_info->u1_qp_rem6 = ps_dec->u1_qp_y_rem6; ps_cur_mb_info->u1_qpc_rem6 = ps_dec->u1_qp_u_rem6; ps_cur_mb_info->u1_qpcr_rem6 = ps_dec->u1_qp_v_rem6; ih264d_update_nnz_for_skipmb(ps_dec, ps_cur_mb_info, CAVLC); } return OK; } /*! ************************************************************************** * \if Function name : ih264d_decode_eislice \endif * * \brief * Decodes an EI Slice * * * \return * 0 on Success and Error code otherwise ************************************************************************** */ WORD32 isvcd_parse_eislice(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_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 u4_temp; WORD32 i_temp; WORD32 ret; UWORD32 *pu4_bitstrm_buf = ps_dec->ps_bitstrm->pu4_buffer; UWORD32 *pu4_bitstrm_ofst = &ps_dec->ps_bitstrm->u4_ofst; ps_nal_svc_ext = ps_svc_lyr_dec->ps_nal_svc_ext; ps_seq = ps_dec->ps_cur_sps; 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; if(0 == ps_svc_lyr_dec->ps_nal_svc_ext->u1_quality_id) { /*--------------------------------------------------------------------*/ /* Read remaining contents of the slice header */ /*--------------------------------------------------------------------*/ /* dec_ref_pic_marking function */ /* G050 */ if(ps_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_dec->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 */ /* Read slice_qp_delta */ WORD64 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_slice->u1_slice_qp = (UWORD8) i8_temp; COPYTHECONTEXT("Slice Header SVC ext: slice_qp_delta", 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); COPYTHECONTEXT("Slice Header SVC ext: disable_deblocking_filter_idc", u4_temp); if(u4_temp > SLICE_BOUNDARY_DBLK_DISABLED) { return ERROR_INV_SLICE_HDR_T; } 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("Slice Header SVC ext: 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("Slice Header SVC ext: 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; } /* 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; } /* Initialization to check if number of motion vector per 2 Mbs */ /* are exceeding the range or not */ ps_dec->u2_mv_2mb[0] = 0; ps_dec->u2_mv_2mb[1] = 0; /*set slice header cone to 2 ,to indicate correct header*/ 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; 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; ret = isvcd_parse_eislice_data_cabac(ps_svc_lyr_dec, ps_slice, u2_first_mb_in_slice); if(ret != OK) return ret; SWITCHONTRACE; SWITCHOFFTRACECABAC; } else { 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; ret = isvcd_parse_eislice_data_cavlc(ps_svc_lyr_dec, ps_slice, u2_first_mb_in_slice); if(ret != OK) return ret; } } else { return ERROR_FEATURE_UNAVAIL; } return OK; } /*****************************************************************************/ /* */ /* Function Name : isvcd_parse_eislice_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. */ /* */ /* Returns : 0 */ /* */ /* Issues : */ /* */ /* Revision History: */ /* */ /* DD MM YYYY Author(s) Changes (Describe the changes made) */ /* 24 06 2005 Kishore Draft */ /* */ /*****************************************************************************/ WORD32 isvcd_parse_eislice_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; UWORD8 uc_more_data_flag; UWORD8 u1_num_mbs, u1_mb_idx; dec_mb_info_t *ps_cur_mb_info; dec_svc_mb_info_t *ps_svc_cur_mb_info; deblk_mb_t *ps_cur_deblk_mb; dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm; UWORD16 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs; WORD16 i2_cur_mb_addr; UWORD8 u1_mbaff; UWORD8 u1_num_mbs_next, u1_end_of_row, u1_tfr_n_mb; WORD32 ret = OK; decoding_envirnoment_t *ps_cab_env; 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; dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL; ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params; ps_dec->u1_qp = ps_slice->u1_slice_qp; ih264d_update_qp(ps_dec, 0); u1_mbaff = ps_slice->u1_mbaff_frame_flag; 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; isvcd_init_cabac_contexts(I_SLICE, ps_dec); ps_dec->i1_prev_mb_qp_delta = 0; ps_cab_env = &ps_dec->s_cab_dec_env; /* initializations */ u1_mb_idx = ps_dec->u1_mb_idx; u1_num_mbs = u1_mb_idx; uc_more_data_flag = 1; i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff; do { UWORD16 u2_mbx; 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; } { UWORD8 u1_mb_type; 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_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff); ps_cur_mb_info->u1_end_of_slice = 0; /***************************************************************/ /* 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, 0); u2_mbx = ps_dec->u2_mbx; 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 */ /***************************************************************/ ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs; 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); 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_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_intra_cabac(0, ps_dec); if(u1_mb_type > 25) return ERROR_MB_TYPE; ps_cur_mb_info->u1_mb_type = u1_mb_type; COPYTHECONTEXT("u1_mb_type", u1_mb_type); ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type | D_INTRA_MB; } else { ps_cur_mb_info->u1_mb_type = MB_INFER; ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type | D_INTRA_IBL; } /* Parse Macroblock Data */ u1_mb_type = ps_cur_mb_info->u1_mb_type; if(25 == 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 { ret = isvcd_parse_imb_cabac(ps_svc_lyr_dec, ps_cur_mb_info, ps_svc_cur_mb_info, u1_mb_type); if(ret != OK) return ret; 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(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++; /* Store the colocated information */ { mv_pred_t *ps_mv_nmb_start = ps_dec->ps_mv_cur + (u1_num_mbs << 4); mv_pred_t s_mvPred = {{0, 0, 0, 0}, {-1, -1}, 0, 0}; if(ps_mv_nmb_start) { ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0, (UWORD8) (ps_dec->u1_cur_mb_fld_dec_flag << 1), 4, 4); } else { return NOT_OK; } } u1_num_mbs++; } /****************************************************************/ /* Check for End Of Row */ /****************************************************************/ u1_num_mbs_next = i2_pic_wdin_mbs - u2_mbx - 1; u1_end_of_row = (!u1_num_mbs_next) && (!(u1_mbaff && (u1_num_mbs & 0x01))); u1_tfr_n_mb = (u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row || (!uc_more_data_flag); ps_cur_mb_info->u1_end_of_slice = (!uc_more_data_flag); if(u1_tfr_n_mb || (!uc_more_data_flag)) { 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; } } while(uc_more_data_flag); 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_eislice_data_cavlc */ /* */ /* 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. */ /* */ /* Returns : 0 */ /* */ /* Issues : */ /* */ /* Revision History: */ /* */ /* DD MM YYYY Author(s) Changes (Describe the changes made) */ /* 24 06 2005 Kishore Draft */ /* */ /*****************************************************************************/ WORD32 isvcd_parse_eislice_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; UWORD8 uc_more_data_flag; UWORD8 u1_num_mbs, u1_mb_idx; dec_mb_info_t *ps_cur_mb_info; dec_svc_mb_info_t *ps_svc_cur_mb_info; deblk_mb_t *ps_cur_deblk_mb; dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm; UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst; UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; UWORD16 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs; WORD16 i2_cur_mb_addr; UWORD8 u1_mbaff; UWORD8 u1_num_mbs_next, u1_end_of_row, u1_tfr_n_mb; WORD32 ret = OK; dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL; ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params; ps_dec->u1_qp = ps_slice->u1_slice_qp; ih264d_update_qp(ps_dec, 0); u1_mbaff = ps_slice->u1_mbaff_frame_flag; u1_mb_idx = ps_dec->u1_mb_idx; u1_num_mbs = u1_mb_idx; uc_more_data_flag = 1; i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff; do { 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_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff); ps_cur_mb_info->u1_end_of_slice = 0; /***************************************************************/ /* 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, 0); 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 */ /***************************************************************/ ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs; 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); 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 ext: 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; } /**************************************************************/ /* Macroblock Layer Begins, Decode the u1_mb_type */ /**************************************************************/ if(!ps_svc_cur_mb_info->u1_base_mode_flag) /* Inlined ih264d_uev */ { UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst; UWORD32 u4_word, u4_ldz, u4_temp; /***************************************************************/ /* 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 > 25) return ERROR_MB_TYPE; u1_mb_type = u4_temp; /* Inlined ih264d_uev */ ps_cur_mb_info->u1_mb_type = u1_mb_type; COPYTHECONTEXT("u1_mb_type", u1_mb_type); ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type | D_INTRA_MB; } else { ps_cur_mb_info->u1_mb_type = MB_INFER; ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type | D_INTRA_IBL; } /**************************************************************/ /* Parse Macroblock data */ /**************************************************************/ u1_mb_type = ps_cur_mb_info->u1_mb_type; if(25 == 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 { ret = isvcd_parse_imb_cavlc(ps_svc_lyr_dec, ps_cur_mb_info, ps_svc_cur_mb_info, u1_num_mbs, u1_mb_type); if(ret != OK) return ret; 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); } uc_more_data_flag = MORE_RBSP_DATA(ps_bitstrm); if(u1_mbaff) { ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info); if(!uc_more_data_flag && (0 == (i2_cur_mb_addr & 1))) { return ERROR_EOB_FLUSHBITS_T; } } /**************************************************************/ /* Get next Macroblock address */ /**************************************************************/ i2_cur_mb_addr++; /* Store the colocated information */ { mv_pred_t *ps_mv_nmb_start = ps_dec->ps_mv_cur + (u1_num_mbs << 4); mv_pred_t s_mvPred = {{0, 0, 0, 0}, {-1, -1}, 0, 0}; if(ps_mv_nmb_start) { ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0, (UWORD8) (ps_dec->u1_cur_mb_fld_dec_flag << 1), 4, 4); } else { return NOT_OK; } } u1_num_mbs++; /****************************************************************/ /* Check for End Of Row */ /****************************************************************/ 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_tfr_n_mb = (u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row || (!uc_more_data_flag); ps_cur_mb_info->u1_end_of_slice = (!uc_more_data_flag); if(u1_tfr_n_mb || (!uc_more_data_flag)) { 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; } } while(uc_more_data_flag); 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 : ParseIMbCab \endif * * \brief * This function parses CABAC syntax of a I MB. If 16x16 Luma DC transform * is also done here. Transformed Luma DC values are copied in their * 0th pixel location of corrosponding CoeffBlock. * * \return * 0 on Success and Error code otherwise ************************************************************************** */ WORD32 isvcd_parse_imb_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_type) { dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec; WORD8 i1_delta_qp; UWORD8 u1_cbp; UWORD8 u1_offset; /* Variables for handling Cabac contexts */ ctxt_inc_mb_info_t *p_curr_ctxt = ps_dec->ps_curr_ctxt_mb_info; ctxt_inc_mb_info_t *ps_left_ctxt = ps_dec->p_left_ctxt_mb_info; dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm; bin_ctxt_model_t *p_bin_ctxt; UWORD8 u1_intra_chrom_pred_mode; UWORD8 u1_dc_block_flag = 0; WORD32 ret; ps_cur_mb_info->u1_yuv_dc_block_flag = 0; if(ps_left_ctxt == ps_dec->ps_def_ctxt_mb_info) { ps_dec->pu1_left_yuv_dc_csbp[0] = 0xf; } if(ps_dec->ps_cur_slice->u1_slice_type != I_SLICE) { MEMSET_16BYTES(&ps_dec->pu1_left_mv_ctxt_inc[0][0], 0); *((UWORD32 *) ps_dec->pi1_left_ref_idx_ctxt_inc) = 0; MEMSET_16BYTES(p_curr_ctxt->u1_mv, 0); memset(p_curr_ctxt->i1_ref_idx, 0, 4); } /* default */ ps_cur_mb_info->ps_curmb->u1_mb_type = P_MB; if(!ps_svc_cur_mb_info->u1_base_mode_flag) { if(u1_mb_type == I_4x4_MB) { ps_cur_mb_info->ps_curmb->u1_mb_type = I_4x4_MB; p_curr_ctxt->u1_mb_type = CAB_I4x4; u1_offset = 0; ps_cur_mb_info->u1_tran_form8x8 = 0; ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0; /*--------------------------------------------------------------------*/ /* Read transform_size_8x8_flag if present */ /*--------------------------------------------------------------------*/ if(ps_dec->ps_cur_pps->i4_transform_8x8_mode_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 the IntraPrediction modes for LUMA */ /*--------------------------------------------------------------------*/ if(!ps_cur_mb_info->u1_tran_form8x8) { UWORD8 *pu1_temp; ih264d_read_intra_pred_modes_cabac(ps_dec, ((UWORD8 *) ps_dec->pv_parse_tu_coeff_data), ((UWORD8 *) ps_dec->pv_parse_tu_coeff_data + 16), ps_cur_mb_info->u1_tran_form8x8); pu1_temp = (UWORD8 *) ps_dec->pv_parse_tu_coeff_data; pu1_temp += 32; ps_dec->pv_parse_tu_coeff_data = (void *) pu1_temp; } else { UWORD8 *pu1_temp; ih264d_read_intra_pred_modes_cabac(ps_dec, ((UWORD8 *) ps_dec->pv_parse_tu_coeff_data), ((UWORD8 *) ps_dec->pv_parse_tu_coeff_data + 4), ps_cur_mb_info->u1_tran_form8x8); pu1_temp = (UWORD8 *) ps_dec->pv_parse_tu_coeff_data; pu1_temp += 8; ps_dec->pv_parse_tu_coeff_data = (void *) pu1_temp; } /*--------------------------------------------------------------------*/ /* Read the IntraPrediction mode for CHROMA */ /*--------------------------------------------------------------------*/ u1_intra_chrom_pred_mode = ih264d_parse_chroma_pred_mode_cabac(ps_dec); COPYTHECONTEXT("intra_chroma_pred_mode", u1_intra_chrom_pred_mode); p_curr_ctxt->u1_intra_chroma_pred_mode = ps_cur_mb_info->u1_chroma_pred_mode = u1_intra_chrom_pred_mode; /*--------------------------------------------------------------------*/ /* Read the Coded block pattern */ /*--------------------------------------------------------------------*/ u1_cbp = 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; /*--------------------------------------------------------------------*/ /* Read mb_qp_delta */ /*--------------------------------------------------------------------*/ if(ps_cur_mb_info->u1_cbp) { ret = ih264d_parse_mb_qp_delta_cabac(ps_dec, &i1_delta_qp); if(ret != OK) return ret; COPYTHECONTEXT("mb_qp_delta", i1_delta_qp); if(i1_delta_qp != 0) { ret = ih264d_update_qp(ps_dec, i1_delta_qp); if(ret != OK) return ret; } } else ps_dec->i1_prev_mb_qp_delta = 0; p_curr_ctxt->u1_yuv_dc_csbp &= 0xFE; } else { u1_offset = 1; ps_cur_mb_info->ps_curmb->u1_mb_type = I_16x16_MB; p_curr_ctxt->u1_mb_type = CAB_I16x16; ps_cur_mb_info->u1_tran_form8x8 = 0; p_curr_ctxt->u1_transform8x8_ctxt = 0; ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0; /*--------------------------------------------------------------------*/ /* Read the IntraPrediction mode for CHROMA */ /*--------------------------------------------------------------------*/ u1_intra_chrom_pred_mode = ih264d_parse_chroma_pred_mode_cabac(ps_dec); if(u1_intra_chrom_pred_mode > 3) return ERROR_CHROMA_PRED_MODE; COPYTHECONTEXT("Chroma intra_chroma_pred_mode pred mode", u1_intra_chrom_pred_mode); p_curr_ctxt->u1_intra_chroma_pred_mode = ps_cur_mb_info->u1_chroma_pred_mode = u1_intra_chrom_pred_mode; /*--------------------------------------------------------------------*/ /* Read the Coded block pattern */ /*--------------------------------------------------------------------*/ u1_cbp = gau1_ih264d_cbp_tab[(u1_mb_type - 1) >> 2]; ps_cur_mb_info->u1_cbp = u1_cbp; p_curr_ctxt->u1_cbp = u1_cbp; /*--------------------------------------------------------------------*/ /* Read mb_qp_delta */ /*--------------------------------------------------------------------*/ ret = ih264d_parse_mb_qp_delta_cabac(ps_dec, &i1_delta_qp); if(ret != OK) return ret; COPYTHECONTEXT("mb_qp_delta", i1_delta_qp); if(i1_delta_qp != 0) { ret = ih264d_update_qp(ps_dec, i1_delta_qp); if(ret != OK) return ret; } { WORD16 i_scaleFactor; WORD16 *pi2_scale_matrix_ptr; /*******************************************************************/ /* for luma DC coefficients the scaling is done during the parsing */ /* to preserve the precision */ /*******************************************************************/ if(ps_dec->s_high_profile.u1_scaling_present) { pi2_scale_matrix_ptr = ps_dec->s_high_profile.i2_scalinglist4x4[0]; } else { i_scaleFactor = 16; pi2_scale_matrix_ptr = &i_scaleFactor; } { ctxt_inc_mb_info_t *ps_top_ctxt = ps_dec->p_top_ctxt_mb_info; UWORD8 uc_a, uc_b; UWORD32 u4_ctx_inc; INC_SYM_COUNT(&(ps_dec->s_cab_dec_env)); /* if MbAddrN not available then CondTermN = 1 */ uc_b = ((ps_top_ctxt->u1_yuv_dc_csbp) & 0x01); /* if MbAddrN not available then CondTermN = 1 */ uc_a = ((ps_dec->pu1_left_yuv_dc_csbp[0]) & 0x01); u4_ctx_inc = (uc_a + (uc_b << 1)); { WORD16 pi2_dc_coef[16] = {0}; tu_sblk4x4_coeff_data_t *ps_tu_4x4 = (tu_sblk4x4_coeff_data_t *) ps_dec->pv_parse_tu_coeff_data; WORD16 *pi2_coeff_block = (WORD16 *) ps_dec->pv_parse_tu_coeff_data; p_bin_ctxt = (ps_dec->p_cbf_t[LUMA_DC_CTXCAT]) + u4_ctx_inc; u1_dc_block_flag = ih264d_read_coeff4x4_cabac( ps_bitstrm, LUMA_DC_CTXCAT, ps_dec->p_significant_coeff_flag_t[LUMA_DC_CTXCAT], ps_dec, p_bin_ctxt); /* Store coded_block_flag */ p_curr_ctxt->u1_yuv_dc_csbp &= 0xFE; p_curr_ctxt->u1_yuv_dc_csbp |= u1_dc_block_flag; if(u1_dc_block_flag) { WORD32 pi4_tmp[16] = {0}; memset(pi2_dc_coef, 0, sizeof(pi2_dc_coef)); ih264d_unpack_coeff4x4_dc_4x4blk(ps_tu_4x4, pi2_dc_coef, ps_dec->pu1_inv_scan); PROFILE_DISABLE_IQ_IT_RECON() ps_dec->pf_ihadamard_scaling_4x4( pi2_dc_coef, pi2_coeff_block, ps_dec->pu2_quant_scale_y, (UWORD16 *) pi2_scale_matrix_ptr, ps_dec->u1_qp_y_div6, pi4_tmp); pi2_coeff_block += 16; ps_dec->pv_parse_tu_coeff_data = (void *) pi2_coeff_block; SET_BIT(ps_cur_mb_info->u1_yuv_dc_block_flag, 0); } } } } } ps_dec->pu1_left_yuv_dc_csbp[0] &= 0x6; ps_dec->pu1_left_yuv_dc_csbp[0] |= u1_dc_block_flag; } else { u1_offset = 0; /*--------------------------------------------------------------------*/ /* Read the Coded block pattern */ /*--------------------------------------------------------------------*/ u1_cbp = 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_yuv_dc_csbp &= 0xFE; ps_dec->pu1_left_yuv_dc_csbp[0] &= 0x6; p_curr_ctxt->u1_mb_type = CAB_INFERRED; p_curr_ctxt->u1_intra_chroma_pred_mode = 0; ps_cur_mb_info->u1_tran_form8x8 = 0; ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0; /*--------------------------------------------------------------------*/ /* Read transform_size_8x8_flag if present */ /*--------------------------------------------------------------------*/ if((ps_dec->ps_cur_pps->i4_transform_8x8_mode_flag) && (u1_cbp & 0xf)) { 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(ps_cur_mb_info->u1_cbp) { ret = ih264d_parse_mb_qp_delta_cabac(ps_dec, &i1_delta_qp); if(ret != OK) return ret; COPYTHECONTEXT("mb_qp_delta", i1_delta_qp); if(i1_delta_qp != 0) { ret = ih264d_update_qp(ps_dec, i1_delta_qp); if(ret != OK) return ret; } } else ps_dec->i1_prev_mb_qp_delta = 0; } ih264d_parse_residual4x4_cabac(ps_dec, ps_cur_mb_info, u1_offset); if(EXCEED_OFFSET(ps_bitstrm)) return ERROR_EOB_TERMINATE_T; return OK; } /*! ************************************************************************** * \if Function name : isvcd_decode_islice \endif * * \brief * Decodes an I Slice * * * \return * 0 on Success and Error code otherwise ************************************************************************** */ WORD32 isvcd_parse_islice(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_slice = ps_dec->ps_cur_slice; UWORD32 *pu4_bitstrm_buf = ps_dec->ps_bitstrm->pu4_buffer; UWORD32 *pu4_bitstrm_ofst = &ps_dec->ps_bitstrm->u4_ofst; UWORD32 u4_temp; WORD32 i_temp; WORD32 ret; /*--------------------------------------------------------------------*/ /* Read remaining contents of the slice header */ /*--------------------------------------------------------------------*/ /* dec_ref_pic_marking function */ /* G050 */ if(ps_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_dec->ps_bitstrm->u4_ofst += ps_dec->u4_bitoffset; } { /* G050 */ /* Read slice_qp_delta */ WORD64 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_slice->u1_slice_qp = (UWORD8) i8_temp; COPYTHECONTEXT("SH: slice_qp_delta", 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); COPYTHECONTEXT("SH: disable_deblocking_filter_idc", u4_temp); if(u4_temp > SLICE_BOUNDARY_DBLK_DISABLED) { return ERROR_INV_SLICE_HDR_T; } 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; } /* Initialization to check if number of motion vector per 2 Mbs */ /* are exceeding the range or not */ ps_dec->u2_mv_2mb[0] = 0; ps_dec->u2_mv_2mb[1] = 0; /*set slice header cone to 2 ,to indicate correct header*/ ps_dec->u1_slice_header_done = 2; if(ps_pps->u1_entropy_coding_mode) { SWITCHOFFTRACE; SWITCHONTRACECABAC; 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; ret = isvcd_parse_islice_data_cabac(ps_svc_lyr_dec, ps_slice, u2_first_mb_in_slice); if(ret != OK) return ret; SWITCHONTRACE; SWITCHOFFTRACECABAC; } else { 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; ret = isvcd_parse_islice_data_cavlc(ps_svc_lyr_dec, ps_slice, u2_first_mb_in_slice); if(ret != OK) return ret; } return OK; }