/****************************************************************************** * * Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore * * 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. * ******************************************************************************/ /** ******************************************************************************* * @file * ihevcd_parse_headers.c * * @brief * Contains functions for parsing headers * * @author * Harish * * @par List of Functions: * * @remarks * None * ******************************************************************************* */ /*****************************************************************************/ /* File Includes */ /*****************************************************************************/ #include #include #include #include #include #include #include #include "ihevc_typedefs.h" #include "iv.h" #include "ivd.h" #include "ihevcd_cxa.h" #include "ihevc_defs.h" #include "ihevc_debug.h" #include "ihevc_defs.h" #include "ihevc_structs.h" #include "ihevc_buf_mgr.h" #include "ihevc_dpb_mgr.h" #include "ihevc_macros.h" #include "ihevc_platform_macros.h" #include "ihevc_cabac_tables.h" #include "ihevc_common_tables.h" #include "ihevc_quant_tables.h" #include "ihevcd_trace.h" #include "ihevcd_defs.h" #include "ihevcd_function_selector.h" #include "ihevcd_structs.h" #include "ihevcd_error.h" #include "ihevcd_debug.h" #include "ihevcd_nal.h" #include "ihevcd_bitstream.h" #include "ihevcd_parse_headers.h" #include "ihevcd_ref_list.h" #define COPY_DEFAULT_SCALING_LIST(pi2_scaling_mat) \ { \ WORD32 scaling_mat_offset[]={0, 16, 32, 48, 64, 80, 96, 160, 224, 288, 352, 416, 480, 736, 992, 1248, 1504, 1760, 2016, 3040}; \ \ /* scaling matrix for 4x4 */ \ memcpy(pi2_scaling_mat, gi2_flat_scale_mat_32x32, 6*16*sizeof(WORD16)); \ /* scaling matrix for 8x8 */ \ memcpy(pi2_scaling_mat + scaling_mat_offset[6], gi2_intra_default_scale_mat_8x8, 64*sizeof(WORD16)); \ memcpy(pi2_scaling_mat + scaling_mat_offset[7], gi2_intra_default_scale_mat_8x8, 64*sizeof(WORD16)); \ memcpy(pi2_scaling_mat + scaling_mat_offset[8], gi2_intra_default_scale_mat_8x8, 64*sizeof(WORD16)); \ memcpy(pi2_scaling_mat + scaling_mat_offset[9], gi2_inter_default_scale_mat_8x8, 64*sizeof(WORD16)); \ memcpy(pi2_scaling_mat + scaling_mat_offset[10], gi2_inter_default_scale_mat_8x8, 64*sizeof(WORD16)); \ memcpy(pi2_scaling_mat + scaling_mat_offset[11], gi2_inter_default_scale_mat_8x8, 64*sizeof(WORD16)); \ /* scaling matrix for 16x16 */ \ memcpy(pi2_scaling_mat + scaling_mat_offset[12], gi2_intra_default_scale_mat_16x16, 256*sizeof(WORD16)); \ memcpy(pi2_scaling_mat + scaling_mat_offset[13], gi2_intra_default_scale_mat_16x16, 256*sizeof(WORD16)); \ memcpy(pi2_scaling_mat + scaling_mat_offset[14], gi2_intra_default_scale_mat_16x16, 256*sizeof(WORD16)); \ memcpy(pi2_scaling_mat + scaling_mat_offset[15], gi2_inter_default_scale_mat_16x16, 256*sizeof(WORD16)); \ memcpy(pi2_scaling_mat + scaling_mat_offset[16], gi2_inter_default_scale_mat_16x16, 256*sizeof(WORD16)); \ memcpy(pi2_scaling_mat + scaling_mat_offset[17], gi2_inter_default_scale_mat_16x16, 256*sizeof(WORD16)); \ /* scaling matrix for 32x32 */ \ memcpy(pi2_scaling_mat + scaling_mat_offset[18], gi2_intra_default_scale_mat_32x32, 1024*sizeof(WORD16)); \ memcpy(pi2_scaling_mat + scaling_mat_offset[19], gi2_inter_default_scale_mat_32x32, 1024*sizeof(WORD16)); \ } #define COPY_FLAT_SCALING_LIST(pi2_scaling_mat) \ { \ WORD32 scaling_mat_offset[]={0, 16, 32, 48, 64, 80, 96, 160, 224, 288, 352, 416, 480, 736, 992, 1248, 1504, 1760, 2016, 3040}; \ \ /* scaling matrix for 4x4 */ \ memcpy(pi2_scaling_mat, gi2_flat_scale_mat_32x32, 6*16*sizeof(WORD16)); \ /* scaling matrix for 8x8 */ \ memcpy(pi2_scaling_mat + scaling_mat_offset[6], gi2_flat_scale_mat_32x32, 6*64*sizeof(WORD16)); \ /* scaling matrix for 16x16 */ \ memcpy(pi2_scaling_mat + scaling_mat_offset[12], gi2_flat_scale_mat_32x32, 3*256*sizeof(WORD16)); \ memcpy(pi2_scaling_mat + scaling_mat_offset[15], gi2_flat_scale_mat_32x32, 3*256*sizeof(WORD16)); \ /* scaling matrix for 32x32 */ \ memcpy(pi2_scaling_mat + scaling_mat_offset[18], gi2_flat_scale_mat_32x32, 1024*sizeof(WORD16)); \ memcpy(pi2_scaling_mat + scaling_mat_offset[19], gi2_flat_scale_mat_32x32, 1024*sizeof(WORD16)); \ } /* Function declarations */ /** ******************************************************************************* * * @brief * Parses Prediction weight table syntax * * @par Description: * Parse Prediction weight table syntax as per Section: 7.3.8.4 * * @param[in] ps_bitstrm * Pointer to bitstream context * * @param[in] ps_sps * Current SPS * * @param[in] ps_pps * Current PPS * * @param[in] ps_slice_hdr * Current Slice header * * @returns Error code from IHEVCD_ERROR_T * * @remarks * * ******************************************************************************* */ WORD32 ihevcd_parse_pred_wt_ofst(bitstrm_t *ps_bitstrm, sps_t *ps_sps, pps_t *ps_pps, slice_header_t *ps_slice_hdr) { IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS; WORD32 value; UWORD32 u4_value; WORD32 i; pred_wt_ofst_t *ps_wt_ofst = &ps_slice_hdr->s_wt_ofst; UNUSED(ps_pps); UEV_PARSE("luma_log2_weight_denom", u4_value, ps_bitstrm); if(u4_value > 7) { return IHEVCD_INVALID_PARAMETER; } ps_wt_ofst->i1_luma_log2_weight_denom = u4_value; if(ps_sps->i1_chroma_format_idc != 0) { SEV_PARSE("delta_chroma_log2_weight_denom", value, ps_bitstrm); if(((ps_wt_ofst->i1_luma_log2_weight_denom + value) < 0) || ((ps_wt_ofst->i1_luma_log2_weight_denom + value) > 7)) { return IHEVCD_INVALID_PARAMETER; } ps_wt_ofst->i1_chroma_log2_weight_denom = ps_wt_ofst->i1_luma_log2_weight_denom + value; } for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l0_active; i++) { BITS_PARSE("luma_weight_l0_flag[ i ]", value, ps_bitstrm, 1); ps_wt_ofst->i1_luma_weight_l0_flag[i] = value; } if(ps_sps->i1_chroma_format_idc != 0) { for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l0_active; i++) { BITS_PARSE("chroma_weight_l0_flag[ i ]", value, ps_bitstrm, 1); ps_wt_ofst->i1_chroma_weight_l0_flag[i] = value; } } else { for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l0_active; i++) { ps_wt_ofst->i1_chroma_weight_l0_flag[i] = 0; } } for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l0_active; i++) { if(ps_wt_ofst->i1_luma_weight_l0_flag[i]) { SEV_PARSE("delta_luma_weight_l0[ i ]", value, ps_bitstrm); if( value < -128 || value > 127 ) { return IHEVCD_INVALID_PARAMETER; } ps_wt_ofst->i2_luma_weight_l0[i] = (1 << ps_wt_ofst->i1_luma_log2_weight_denom) + value; SEV_PARSE("luma_offset_l0[ i ]", value, ps_bitstrm); if( value < -128 || value > 127 ) { return IHEVCD_INVALID_PARAMETER; } ps_wt_ofst->i2_luma_offset_l0[i] = value; } else { ps_wt_ofst->i2_luma_weight_l0[i] = (1 << ps_wt_ofst->i1_luma_log2_weight_denom); ps_wt_ofst->i2_luma_offset_l0[i] = 0; } if(ps_wt_ofst->i1_chroma_weight_l0_flag[i]) { WORD32 ofst; WORD32 shift = (1 << (BIT_DEPTH_CHROMA - 1)); SEV_PARSE("delta_chroma_weight_l0[ i ][ j ]", value, ps_bitstrm); if(value < -128 || value > 127) { return IHEVCD_INVALID_PARAMETER; } ps_wt_ofst->i2_chroma_weight_l0_cb[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom) + value; SEV_PARSE("delta_chroma_offset_l0[ i ][ j ]", value, ps_bitstrm); if( value < -512 || value > 511 ) { return IHEVCD_INVALID_PARAMETER; } ofst = ((shift * ps_wt_ofst->i2_chroma_weight_l0_cb[i]) >> ps_wt_ofst->i1_chroma_log2_weight_denom); ofst = value - ofst + shift; ps_wt_ofst->i2_chroma_offset_l0_cb[i] = CLIP_S8(ofst); SEV_PARSE("delta_chroma_weight_l0[ i ][ j ]", value, ps_bitstrm); if(value < -128 || value > 127) { return IHEVCD_INVALID_PARAMETER; } ps_wt_ofst->i2_chroma_weight_l0_cr[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom) + value; SEV_PARSE("delta_chroma_offset_l0[ i ][ j ]", value, ps_bitstrm); if( value < -512 || value > 511 ) { return IHEVCD_INVALID_PARAMETER; } ofst = ((shift * ps_wt_ofst->i2_chroma_weight_l0_cr[i]) >> ps_wt_ofst->i1_chroma_log2_weight_denom); ofst = value - ofst + shift; ps_wt_ofst->i2_chroma_offset_l0_cr[i] = CLIP_S8(ofst); } else { ps_wt_ofst->i2_chroma_weight_l0_cb[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom); ps_wt_ofst->i2_chroma_weight_l0_cr[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom); ps_wt_ofst->i2_chroma_offset_l0_cb[i] = 0; ps_wt_ofst->i2_chroma_offset_l0_cr[i] = 0; } } if(BSLICE == ps_slice_hdr->i1_slice_type) { for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l1_active; i++) { BITS_PARSE("luma_weight_l1_flag[ i ]", value, ps_bitstrm, 1); ps_wt_ofst->i1_luma_weight_l1_flag[i] = value; } if(ps_sps->i1_chroma_format_idc != 0) { for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l1_active; i++) { BITS_PARSE("chroma_weight_l1_flag[ i ]", value, ps_bitstrm, 1); ps_wt_ofst->i1_chroma_weight_l1_flag[i] = value; } } else { for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l1_active; i++) { ps_wt_ofst->i1_chroma_weight_l1_flag[i] = 0; } } for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l1_active; i++) { if(ps_wt_ofst->i1_luma_weight_l1_flag[i]) { SEV_PARSE("delta_luma_weight_l1[ i ]", value, ps_bitstrm); if( value < -128 || value > 127 ) { return IHEVCD_INVALID_PARAMETER; } ps_wt_ofst->i2_luma_weight_l1[i] = (1 << ps_wt_ofst->i1_luma_log2_weight_denom) + value; SEV_PARSE("luma_offset_l1[ i ]", value, ps_bitstrm); if( value < -128 || value > 127 ) { return IHEVCD_INVALID_PARAMETER; } ps_wt_ofst->i2_luma_offset_l1[i] = value; } else { ps_wt_ofst->i2_luma_weight_l1[i] = (1 << ps_wt_ofst->i1_luma_log2_weight_denom); ps_wt_ofst->i2_luma_offset_l1[i] = 0; } if(ps_wt_ofst->i1_chroma_weight_l1_flag[i]) { WORD32 ofst; WORD32 shift = (1 << (BIT_DEPTH_CHROMA - 1)); SEV_PARSE("delta_chroma_weight_l1[ i ][ j ]", value, ps_bitstrm); if(value < -128 || value > 127) { return IHEVCD_INVALID_PARAMETER; } ps_wt_ofst->i2_chroma_weight_l1_cb[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom) + value;; SEV_PARSE("delta_chroma_offset_l1[ i ][ j ]", value, ps_bitstrm); if( value < -512 || value > 511 ) { return IHEVCD_INVALID_PARAMETER; } ofst = ((shift * ps_wt_ofst->i2_chroma_weight_l1_cb[i]) >> ps_wt_ofst->i1_chroma_log2_weight_denom); ofst = value - ofst + shift; ps_wt_ofst->i2_chroma_offset_l1_cb[i] = CLIP_S8(ofst);; SEV_PARSE("delta_chroma_weight_l1[ i ][ j ]", value, ps_bitstrm); if(value < -128 || value > 127) { return IHEVCD_INVALID_PARAMETER; } ps_wt_ofst->i2_chroma_weight_l1_cr[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom) + value; SEV_PARSE("delta_chroma_offset_l1[ i ][ j ]", value, ps_bitstrm); if( value < -512 || value > 511 ) { return IHEVCD_INVALID_PARAMETER; } ofst = ((shift * ps_wt_ofst->i2_chroma_weight_l1_cr[i]) >> ps_wt_ofst->i1_chroma_log2_weight_denom); ofst = value - ofst + shift; ps_wt_ofst->i2_chroma_offset_l1_cr[i] = CLIP_S8(ofst);; } else { ps_wt_ofst->i2_chroma_weight_l1_cb[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom); ps_wt_ofst->i2_chroma_weight_l1_cr[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom); ps_wt_ofst->i2_chroma_offset_l1_cb[i] = 0; ps_wt_ofst->i2_chroma_offset_l1_cr[i] = 0; } } } return ret; } /** ******************************************************************************* * * @brief * Parses short term reference picture set * * @par Description * Parses short term reference picture set as per section 7.3.8.2. * Can be called by either SPS or Slice header parsing modules. * * @param[in] ps_bitstrm * Pointer to bitstream structure * * @param[out] ps_stref_picset_base * Pointer to first short term ref pic set structure * * @param[in] num_short_term_ref_pic_sets * Number of short term reference pic sets * * @param[in] idx * Current short term ref pic set id * * @returns Error code from IHEVCD_ERROR_T * * @remarks * ******************************************************************************* */ IHEVCD_ERROR_T ihevcd_short_term_ref_pic_set(bitstrm_t *ps_bitstrm, stref_picset_t *ps_stref_picset_base, WORD32 num_short_term_ref_pic_sets, WORD32 idx, stref_picset_t *ps_stref_picset) { IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS; UWORD32 value; stref_picset_t *ps_stref_picset_ref; WORD32 delta_idx, delta_rps; WORD32 r_idx; WORD32 i; WORD32 j, k, temp; if(idx > 0) { BITS_PARSE("inter_ref_pic_set_prediction_flag", value, ps_bitstrm, 1); ps_stref_picset->i1_inter_ref_pic_set_prediction_flag = value; } else ps_stref_picset->i1_inter_ref_pic_set_prediction_flag = 0; if(ps_stref_picset->i1_inter_ref_pic_set_prediction_flag) { WORD32 delta_rps_sign; WORD32 abs_delta_rps; WORD32 num_neg_pics = 0; WORD32 num_pos_pics = 0; WORD32 num_pics = 0; if(idx == num_short_term_ref_pic_sets) { UEV_PARSE("delta_idx_minus1", value, ps_bitstrm); if(value > num_short_term_ref_pic_sets - 1) { return IHEVCD_INVALID_PARAMETER; } delta_idx = value + 1; } else { delta_idx = 1; } r_idx = idx - delta_idx; r_idx = CLIP3(r_idx, 0, idx - 1); ps_stref_picset_ref = ps_stref_picset_base + r_idx; BITS_PARSE("delta_rps_sign", value, ps_bitstrm, 1); delta_rps_sign = value; UEV_PARSE("abs_delta_rps_minus1", value, ps_bitstrm); if(value > 32767) { return IHEVCD_INVALID_PARAMETER; } abs_delta_rps = value + 1; delta_rps = (1 - 2 * delta_rps_sign) * (abs_delta_rps); for(i = 0; i <= ps_stref_picset_ref->i1_num_delta_pocs; i++) { WORD32 ref_idc; /*****************************************************************/ /* ref_idc is parsed as below */ /* bits "1" ref_idc 1 */ /* bits "01" ref_idc 2 */ /* bits "00" ref_idc 0 */ /*****************************************************************/ BITS_PARSE("used_by_curr_pic_flag", value, ps_bitstrm, 1); ref_idc = value; ps_stref_picset->ai1_used[num_pics] = value; /* If ref_idc is zero check for next bit */ if(0 == ref_idc) { BITS_PARSE("use_delta_flag", value, ps_bitstrm, 1); ref_idc = value << 1; } if((ref_idc == 1) || (ref_idc == 2)) { WORD32 delta_poc; delta_poc = delta_rps; delta_poc += ((i < ps_stref_picset_ref->i1_num_delta_pocs) ? ps_stref_picset_ref->ai2_delta_poc[i] : 0); ps_stref_picset->ai2_delta_poc[num_pics] = delta_poc; if(delta_poc < 0) { num_neg_pics++; } else { num_pos_pics++; } num_pics++; } ps_stref_picset->ai1_ref_idc[i] = ref_idc; } num_neg_pics = CLIP3(num_neg_pics, 0, MAX_DPB_SIZE - 1); num_pos_pics = CLIP3(num_pos_pics, 0, (MAX_DPB_SIZE - 1 - num_neg_pics)); num_pics = num_neg_pics + num_pos_pics; ps_stref_picset->i1_num_ref_idc = ps_stref_picset_ref->i1_num_delta_pocs + 1; ps_stref_picset->i1_num_delta_pocs = num_pics; ps_stref_picset->i1_num_pos_pics = num_pos_pics; ps_stref_picset->i1_num_neg_pics = num_neg_pics; for(j = 1; j < num_pics; j++) { WORD32 delta_poc = ps_stref_picset->ai2_delta_poc[j]; WORD8 i1_used = ps_stref_picset->ai1_used[j]; for(k = j - 1; k >= 0; k--) { temp = ps_stref_picset->ai2_delta_poc[k]; if(delta_poc < temp) { ps_stref_picset->ai2_delta_poc[k + 1] = temp; ps_stref_picset->ai1_used[k + 1] = ps_stref_picset->ai1_used[k]; ps_stref_picset->ai2_delta_poc[k] = delta_poc; ps_stref_picset->ai1_used[k] = i1_used; } } } // flip the negative values to largest first for(j = 0, k = num_neg_pics - 1; j < num_neg_pics >> 1; j++, k--) { WORD32 delta_poc = ps_stref_picset->ai2_delta_poc[j]; WORD8 i1_used = ps_stref_picset->ai1_used[j]; ps_stref_picset->ai2_delta_poc[j] = ps_stref_picset->ai2_delta_poc[k]; ps_stref_picset->ai1_used[j] = ps_stref_picset->ai1_used[k]; ps_stref_picset->ai2_delta_poc[k] = delta_poc; ps_stref_picset->ai1_used[k] = i1_used; } } else { WORD32 prev_poc = 0; WORD32 poc; UEV_PARSE("num_negative_pics", value, ps_bitstrm); if(value > MAX_DPB_SIZE - 1) { return IHEVCD_INVALID_PARAMETER; } ps_stref_picset->i1_num_neg_pics = value; UEV_PARSE("num_positive_pics", value, ps_bitstrm); if(value > (MAX_DPB_SIZE - 1 - ps_stref_picset->i1_num_neg_pics)) { return IHEVCD_INVALID_PARAMETER; } ps_stref_picset->i1_num_pos_pics = value; ps_stref_picset->i1_num_delta_pocs = ps_stref_picset->i1_num_neg_pics + ps_stref_picset->i1_num_pos_pics; for(i = 0; i < ps_stref_picset->i1_num_neg_pics; i++) { UEV_PARSE("delta_poc_s0_minus1", value, ps_bitstrm); if(value > 32767) { return IHEVCD_INVALID_PARAMETER; } poc = prev_poc - ((WORD32)(value + 1)); prev_poc = poc; ps_stref_picset->ai2_delta_poc[i] = poc; BITS_PARSE("used_by_curr_pic_s0_flag", value, ps_bitstrm, 1); ps_stref_picset->ai1_used[i] = value; } prev_poc = 0; for(i = ps_stref_picset->i1_num_neg_pics; i < ps_stref_picset->i1_num_delta_pocs; i++) { UEV_PARSE("delta_poc_s1_minus1", value, ps_bitstrm); if(value > 32767) { return IHEVCD_INVALID_PARAMETER; } poc = prev_poc + (value + 1); prev_poc = poc; ps_stref_picset->ai2_delta_poc[i] = poc; BITS_PARSE("used_by_curr_pic_s1_flag", value, ps_bitstrm, 1); ps_stref_picset->ai1_used[i] = value; } } return ret; } static WORD32 ihevcd_parse_sub_layer_hrd_parameters(bitstrm_t *ps_bitstrm, sub_lyr_hrd_params_t *ps_sub_layer_hrd_params, WORD32 cpb_cnt, WORD32 sub_pic_cpb_params_present_flag) { WORD32 ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS; WORD32 i; for(i = 0; i <= cpb_cnt; i++) { UEV_PARSE("bit_rate_value_minus1[ i ]", ps_sub_layer_hrd_params->au4_bit_rate_value_minus1[i], ps_bitstrm); if(ps_sub_layer_hrd_params->au4_bit_rate_value_minus1[i] > UINT_MAX - 1) { return IHEVCD_INVALID_PARAMETER; } UEV_PARSE("cpb_size_value_minus1[ i ]", ps_sub_layer_hrd_params->au4_cpb_size_value_minus1[i], ps_bitstrm); if(ps_sub_layer_hrd_params->au4_cpb_size_value_minus1[i] > UINT_MAX - 1) { return IHEVCD_INVALID_PARAMETER; } if(sub_pic_cpb_params_present_flag) { UEV_PARSE("cpb_size_du_value_minus1[ i ]", ps_sub_layer_hrd_params->au4_cpb_size_du_value_minus1[i], ps_bitstrm); if(ps_sub_layer_hrd_params->au4_cpb_size_du_value_minus1[i] > UINT_MAX - 1) { return IHEVCD_INVALID_PARAMETER; } UEV_PARSE("bit_rate_du_value_minus1[ i ]", ps_sub_layer_hrd_params->au4_bit_rate_du_value_minus1[i], ps_bitstrm); if(ps_sub_layer_hrd_params->au4_bit_rate_du_value_minus1[i] > UINT_MAX - 1) { return IHEVCD_INVALID_PARAMETER; } } BITS_PARSE("cbr_flag[ i ]", ps_sub_layer_hrd_params->au1_cbr_flag[i], ps_bitstrm, 1); } return ret; } static WORD32 ihevcd_parse_hrd_parameters(bitstrm_t *ps_bitstrm, hrd_params_t *ps_hrd, WORD32 common_info_present_flag, WORD32 max_num_sub_layers_minus1) { WORD32 ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS; WORD32 i; ps_hrd->u1_nal_hrd_parameters_present_flag = 0; ps_hrd->u1_vcl_hrd_parameters_present_flag = 0; ps_hrd->u1_sub_pic_cpb_params_present_flag = 0; ps_hrd->u1_tick_divisor_minus2 = 0; ps_hrd->u1_du_cpb_removal_delay_increment_length_minus1 = 0; ps_hrd->u1_sub_pic_cpb_params_in_pic_timing_sei_flag = 0; ps_hrd->u1_dpb_output_delay_du_length_minus1 = 0; ps_hrd->u4_bit_rate_scale = 0; ps_hrd->u4_cpb_size_scale = 0; ps_hrd->u4_cpb_size_du_scale = 0; ps_hrd->u1_initial_cpb_removal_delay_length_minus1 = 23; ps_hrd->u1_au_cpb_removal_delay_length_minus1 = 23; ps_hrd->u1_dpb_output_delay_length_minus1 = 23; if(common_info_present_flag) { BITS_PARSE("nal_hrd_parameters_present_flag", ps_hrd->u1_nal_hrd_parameters_present_flag, ps_bitstrm, 1); BITS_PARSE("vcl_hrd_parameters_present_flag", ps_hrd->u1_vcl_hrd_parameters_present_flag, ps_bitstrm, 1); if(ps_hrd->u1_nal_hrd_parameters_present_flag || ps_hrd->u1_vcl_hrd_parameters_present_flag) { BITS_PARSE("sub_pic_cpb_params_present_flag", ps_hrd->u1_sub_pic_cpb_params_present_flag, ps_bitstrm, 1); if(ps_hrd->u1_sub_pic_cpb_params_present_flag) { BITS_PARSE("tick_divisor_minus2", ps_hrd->u1_tick_divisor_minus2, ps_bitstrm, 8); BITS_PARSE("du_cpb_removal_delay_increment_length_minus1", ps_hrd->u1_du_cpb_removal_delay_increment_length_minus1, ps_bitstrm, 5); BITS_PARSE("sub_pic_cpb_params_in_pic_timing_sei_flag", ps_hrd->u1_sub_pic_cpb_params_in_pic_timing_sei_flag, ps_bitstrm, 1); BITS_PARSE("dpb_output_delay_du_length_minus1", ps_hrd->u1_dpb_output_delay_du_length_minus1, ps_bitstrm, 5); } BITS_PARSE("bit_rate_scale", ps_hrd->u4_bit_rate_scale, ps_bitstrm, 4); BITS_PARSE("cpb_size_scale", ps_hrd->u4_cpb_size_scale, ps_bitstrm, 4); if(ps_hrd->u1_sub_pic_cpb_params_present_flag) BITS_PARSE("cpb_size_du_scale", ps_hrd->u4_cpb_size_du_scale, ps_bitstrm, 4); BITS_PARSE("initial_cpb_removal_delay_length_minus1", ps_hrd->u1_initial_cpb_removal_delay_length_minus1, ps_bitstrm, 5); BITS_PARSE("au_cpb_removal_delay_length_minus1", ps_hrd->u1_au_cpb_removal_delay_length_minus1, ps_bitstrm, 5); BITS_PARSE("dpb_output_delay_length_minus1", ps_hrd->u1_dpb_output_delay_length_minus1, ps_bitstrm, 5); } } for(i = 0; i <= max_num_sub_layers_minus1; i++) { BITS_PARSE("fixed_pic_rate_general_flag[ i ]", ps_hrd->au1_fixed_pic_rate_general_flag[i], ps_bitstrm, 1); ps_hrd->au1_fixed_pic_rate_within_cvs_flag[i] = 1; ps_hrd->au2_elemental_duration_in_tc_minus1[i] = 0; ps_hrd->au1_low_delay_hrd_flag[i] = 0; ps_hrd->au1_cpb_cnt_minus1[i] = 0; if(!ps_hrd->au1_fixed_pic_rate_general_flag[i]) BITS_PARSE("fixed_pic_rate_within_cvs_flag[ i ]", ps_hrd->au1_fixed_pic_rate_within_cvs_flag[i], ps_bitstrm, 1); if(ps_hrd->au1_fixed_pic_rate_within_cvs_flag[i]) { UEV_PARSE("elemental_duration_in_tc_minus1[ i ]", ps_hrd->au2_elemental_duration_in_tc_minus1[i], ps_bitstrm); if(ps_hrd->au2_elemental_duration_in_tc_minus1[i] > 2047) { return IHEVCD_INVALID_PARAMETER; } } else { BITS_PARSE("low_delay_hrd_flag[ i ]", ps_hrd->au1_low_delay_hrd_flag[i], ps_bitstrm, 1); } if(!ps_hrd->au1_low_delay_hrd_flag[i]) { UEV_PARSE("cpb_cnt_minus1[ i ]", ps_hrd->au1_cpb_cnt_minus1[i], ps_bitstrm); if(ps_hrd->au1_cpb_cnt_minus1[i] > (MAX_CPB_CNT - 1)) { return IHEVCD_INVALID_PARAMETER; } } if(ps_hrd->u1_nal_hrd_parameters_present_flag) ihevcd_parse_sub_layer_hrd_parameters(ps_bitstrm, &ps_hrd->as_sub_layer_hrd_params[i], ps_hrd->au1_cpb_cnt_minus1[i], ps_hrd->u1_sub_pic_cpb_params_present_flag); if(ps_hrd->u1_vcl_hrd_parameters_present_flag) ihevcd_parse_sub_layer_hrd_parameters(ps_bitstrm, &ps_hrd->as_sub_layer_hrd_params[i], ps_hrd->au1_cpb_cnt_minus1[i], ps_hrd->u1_sub_pic_cpb_params_present_flag); } return ret; } static WORD32 ihevcd_parse_vui_parameters(bitstrm_t *ps_bitstrm, vui_t *ps_vui, WORD32 sps_max_sub_layers_minus1) { WORD32 ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS; UWORD16 u2_sar_width = 0; UWORD16 u2_sar_height = 0; BITS_PARSE("aspect_ratio_info_present_flag", ps_vui->u1_aspect_ratio_info_present_flag, ps_bitstrm, 1); ps_vui->u1_aspect_ratio_idc = SAR_UNUSED; u2_sar_width = 0; u2_sar_height = 0; if(ps_vui->u1_aspect_ratio_info_present_flag) { BITS_PARSE("aspect_ratio_idc", ps_vui->u1_aspect_ratio_idc, ps_bitstrm, 8); switch(ps_vui->u1_aspect_ratio_idc) { case SAR_1_1: u2_sar_width = 1; u2_sar_height = 1; break; case SAR_12_11: u2_sar_width = 12; u2_sar_height = 11; break; case SAR_10_11: u2_sar_width = 10; u2_sar_height = 11; break; case SAR_16_11: u2_sar_width = 16; u2_sar_height = 11; break; case SAR_40_33: u2_sar_width = 40; u2_sar_height = 33; break; case SAR_24_11: u2_sar_width = 24; u2_sar_height = 11; break; case SAR_20_11: u2_sar_width = 20; u2_sar_height = 11; break; case SAR_32_11: u2_sar_width = 32; u2_sar_height = 11; break; case SAR_80_33: u2_sar_width = 80; u2_sar_height = 33; break; case SAR_18_11: u2_sar_width = 18; u2_sar_height = 11; break; case SAR_15_11: u2_sar_width = 15; u2_sar_height = 11; break; case SAR_64_33: u2_sar_width = 64; u2_sar_height = 33; break; case SAR_160_99: u2_sar_width = 160; u2_sar_height = 99; break; case SAR_4_3: u2_sar_width = 4; u2_sar_height = 3; break; case SAR_3_2: u2_sar_width = 3; u2_sar_height = 2; break; case SAR_2_1: u2_sar_width = 2; u2_sar_height = 1; break; case EXTENDED_SAR: BITS_PARSE("sar_width", u2_sar_width, ps_bitstrm, 16); BITS_PARSE("sar_height", u2_sar_height, ps_bitstrm, 16); break; default: u2_sar_width = 0; u2_sar_height = 0; break; } } ps_vui->u2_sar_width = u2_sar_width; ps_vui->u2_sar_height = u2_sar_height; BITS_PARSE("overscan_info_present_flag", ps_vui->u1_overscan_info_present_flag, ps_bitstrm, 1); ps_vui->u1_overscan_appropriate_flag = 0; if(ps_vui->u1_overscan_info_present_flag) BITS_PARSE("overscan_appropriate_flag", ps_vui->u1_overscan_appropriate_flag, ps_bitstrm, 1); BITS_PARSE("video_signal_type_present_flag", ps_vui->u1_video_signal_type_present_flag, ps_bitstrm, 1); ps_vui->u1_video_format = VID_FMT_UNSPECIFIED; ps_vui->u1_video_full_range_flag = 0; ps_vui->u1_colour_description_present_flag = 0; ps_vui->u1_colour_primaries = 2; ps_vui->u1_transfer_characteristics = 2; ps_vui->u1_matrix_coefficients = 2; if(ps_vui->u1_video_signal_type_present_flag) { BITS_PARSE("video_format", ps_vui->u1_video_format, ps_bitstrm, 3); BITS_PARSE("video_full_range_flag", ps_vui->u1_video_full_range_flag, ps_bitstrm, 1); BITS_PARSE("colour_description_present_flag", ps_vui->u1_colour_description_present_flag, ps_bitstrm, 1); if(ps_vui->u1_colour_description_present_flag) { BITS_PARSE("colour_primaries", ps_vui->u1_colour_primaries, ps_bitstrm, 8); BITS_PARSE("transfer_characteristics", ps_vui->u1_transfer_characteristics, ps_bitstrm, 8); BITS_PARSE("matrix_coeffs", ps_vui->u1_matrix_coefficients, ps_bitstrm, 8); } } BITS_PARSE("chroma_loc_info_present_flag", ps_vui->u1_chroma_loc_info_present_flag, ps_bitstrm, 1); ps_vui->u1_chroma_sample_loc_type_top_field = 0; ps_vui->u1_chroma_sample_loc_type_bottom_field = 0; if(ps_vui->u1_chroma_loc_info_present_flag) { UEV_PARSE("chroma_sample_loc_type_top_field", ps_vui->u1_chroma_sample_loc_type_top_field, ps_bitstrm); if(ps_vui->u1_chroma_sample_loc_type_top_field > CHROMA_FMT_IDC_YUV444_PLANES + 1) { return IHEVCD_INVALID_PARAMETER; } UEV_PARSE("chroma_sample_loc_type_bottom_field", ps_vui->u1_chroma_sample_loc_type_bottom_field, ps_bitstrm); if(ps_vui->u1_chroma_sample_loc_type_bottom_field > CHROMA_FMT_IDC_YUV444_PLANES + 1) { return IHEVCD_INVALID_PARAMETER; } } BITS_PARSE("neutral_chroma_indication_flag", ps_vui->u1_neutral_chroma_indication_flag, ps_bitstrm, 1); BITS_PARSE("field_seq_flag", ps_vui->u1_field_seq_flag, ps_bitstrm, 1); BITS_PARSE("frame_field_info_present_flag", ps_vui->u1_frame_field_info_present_flag, ps_bitstrm, 1); BITS_PARSE("default_display_window_flag", ps_vui->u1_default_display_window_flag, ps_bitstrm, 1); ps_vui->u4_def_disp_win_left_offset = 0; ps_vui->u4_def_disp_win_right_offset = 0; ps_vui->u4_def_disp_win_top_offset = 0; ps_vui->u4_def_disp_win_bottom_offset = 0; if(ps_vui->u1_default_display_window_flag) { UEV_PARSE("def_disp_win_left_offset", ps_vui->u4_def_disp_win_left_offset, ps_bitstrm); UEV_PARSE("def_disp_win_right_offset", ps_vui->u4_def_disp_win_right_offset, ps_bitstrm); UEV_PARSE("def_disp_win_top_offset", ps_vui->u4_def_disp_win_top_offset, ps_bitstrm); UEV_PARSE("def_disp_win_bottom_offset", ps_vui->u4_def_disp_win_bottom_offset, ps_bitstrm); } BITS_PARSE("vui_timing_info_present_flag", ps_vui->u1_vui_timing_info_present_flag, ps_bitstrm, 1); if(ps_vui->u1_vui_timing_info_present_flag) { BITS_PARSE("vui_num_units_in_tick", ps_vui->u4_vui_num_units_in_tick, ps_bitstrm, 32); BITS_PARSE("vui_time_scale", ps_vui->u4_vui_time_scale, ps_bitstrm, 32); BITS_PARSE("vui_poc_proportional_to_timing_flag", ps_vui->u1_poc_proportional_to_timing_flag, ps_bitstrm, 1); if(ps_vui->u1_poc_proportional_to_timing_flag) { UEV_PARSE("vui_num_ticks_poc_diff_one_minus1", ps_vui->u4_num_ticks_poc_diff_one_minus1, ps_bitstrm); if(ps_vui->u4_num_ticks_poc_diff_one_minus1 > UINT_MAX - 1) { return IHEVCD_INVALID_PARAMETER; } } BITS_PARSE("vui_hrd_parameters_present_flag", ps_vui->u1_vui_hrd_parameters_present_flag, ps_bitstrm, 1); if(ps_vui->u1_vui_hrd_parameters_present_flag) { ret = ihevcd_parse_hrd_parameters(ps_bitstrm, &ps_vui->s_vui_hrd_parameters, 1, sps_max_sub_layers_minus1); RETURN_IF((ret != (IHEVCD_ERROR_T)IHEVCD_SUCCESS), ret); } } BITS_PARSE("bitstream_restriction_flag", ps_vui->u1_bitstream_restriction_flag, ps_bitstrm, 1); ps_vui->u1_tiles_fixed_structure_flag = 0; ps_vui->u1_motion_vectors_over_pic_boundaries_flag = 1; ps_vui->u1_restricted_ref_pic_lists_flag = 0; ps_vui->u4_min_spatial_segmentation_idc = 0; ps_vui->u1_max_bytes_per_pic_denom = 2; ps_vui->u1_max_bits_per_mincu_denom = 1; ps_vui->u1_log2_max_mv_length_horizontal = 15; ps_vui->u1_log2_max_mv_length_vertical = 15; if(ps_vui->u1_bitstream_restriction_flag) { BITS_PARSE("tiles_fixed_structure_flag", ps_vui->u1_tiles_fixed_structure_flag, ps_bitstrm, 1); BITS_PARSE("motion_vectors_over_pic_boundaries_flag", ps_vui->u1_motion_vectors_over_pic_boundaries_flag, ps_bitstrm, 1); BITS_PARSE("restricted_ref_pic_lists_flag", ps_vui->u1_restricted_ref_pic_lists_flag, ps_bitstrm, 1); UEV_PARSE("min_spatial_segmentation_idc", ps_vui->u4_min_spatial_segmentation_idc, ps_bitstrm); if(ps_vui->u4_min_spatial_segmentation_idc > 4095) { return IHEVCD_INVALID_PARAMETER; } UEV_PARSE("max_bytes_per_pic_denom", ps_vui->u1_max_bytes_per_pic_denom, ps_bitstrm); if(ps_vui->u1_max_bytes_per_pic_denom > 16) { return IHEVCD_INVALID_PARAMETER; } UEV_PARSE("max_bits_per_min_cu_denom", ps_vui->u1_max_bits_per_mincu_denom, ps_bitstrm); if(ps_vui->u1_max_bits_per_mincu_denom > 16) { return IHEVCD_INVALID_PARAMETER; } UEV_PARSE("log2_max_mv_length_horizontal", ps_vui->u1_log2_max_mv_length_horizontal, ps_bitstrm); if(ps_vui->u1_max_bits_per_mincu_denom > 16) { return IHEVCD_INVALID_PARAMETER; } UEV_PARSE("log2_max_mv_length_vertical", ps_vui->u1_log2_max_mv_length_vertical, ps_bitstrm); if(ps_vui->u1_max_bits_per_mincu_denom > 15) { return IHEVCD_INVALID_PARAMETER; } } return ret; } /** ******************************************************************************* * * @brief * Parses profile tier and level info for either general layer of sub_layer * * @par Description * Parses profile tier and level info for either general layer of sub_layer * as per section 7.3.3 * * Since the same function is called for parsing general_profile and * sub_layer_profile etc, variables do not specify whether the syntax is * for general or sub_layer. Similarly trace functions also do not differentiate * * @param[in] ps_bitstrm * Pointer to bitstream structure * * @param[out] ps_ptl * Pointer to profile, tier level structure * * @returns Error code from IHEVCD_ERROR_T * * @remarks * ******************************************************************************* */ static IHEVCD_ERROR_T ihevcd_parse_profile_tier_level_layer(bitstrm_t *ps_bitstrm, profile_tier_lvl_t *ps_ptl) { WORD32 value; WORD32 i; IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS; BITS_PARSE("XXX_profile_space[]", value, ps_bitstrm, 2); ps_ptl->i1_profile_space = value; BITS_PARSE("XXX_tier_flag[]", value, ps_bitstrm, 1); ps_ptl->i1_tier_flag = value; BITS_PARSE("XXX_profile_idc[]", value, ps_bitstrm, 5); ps_ptl->i1_profile_idc = value; for(i = 0; i < MAX_PROFILE_COMPATBLTY; i++) { BITS_PARSE("XXX_profile_compatibility_flag[][j]", value, ps_bitstrm, 1); ps_ptl->ai1_profile_compatibility_flag[i] = value; } BITS_PARSE("general_progressive_source_flag", value, ps_bitstrm, 1); ps_ptl->i1_general_progressive_source_flag = value; BITS_PARSE("general_interlaced_source_flag", value, ps_bitstrm, 1); ps_ptl->i1_general_interlaced_source_flag = value; BITS_PARSE("general_non_packed_constraint_flag", value, ps_bitstrm, 1); ps_ptl->i1_general_non_packed_constraint_flag = value; BITS_PARSE("general_frame_only_constraint_flag", value, ps_bitstrm, 1); ps_ptl->i1_frame_only_constraint_flag = value; BITS_PARSE("XXX_reserved_zero_44bits[0..15]", value, ps_bitstrm, 16); BITS_PARSE("XXX_reserved_zero_44bits[16..31]", value, ps_bitstrm, 16); BITS_PARSE("XXX_reserved_zero_44bits[32..43]", value, ps_bitstrm, 12); return ret; } /** ******************************************************************************* * * @brief * Parses profile tier and level info * * @par Description * Parses profile tier and level info as per section 7.3.3 * Called during VPS and SPS parsing * calls ihevcd_parse_profile_tier_level() for general layer and each sub_layers * * @param[in] ps_bitstrm * Pointer to bitstream structure * * @param[out] ps_ptl * Pointer to structure that contains profile, tier level for each layers * * @param[in] profile_present * Flag to indicate if profile data is present * * @param[in] max_num_sub_layers * Number of sub layers present * * @returns Error code from IHEVCD_ERROR_T * * @remarks * ******************************************************************************* */ static IHEVCD_ERROR_T ihevcd_profile_tier_level(bitstrm_t *ps_bitstrm, profile_tier_lvl_info_t *ps_ptl, WORD32 profile_present, WORD32 max_num_sub_layers) { WORD32 value; IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS; WORD32 i; if(profile_present) { ret = ihevcd_parse_profile_tier_level_layer(ps_bitstrm, &ps_ptl->s_ptl_gen); if((IHEVCD_ERROR_T)IHEVCD_SUCCESS != ret) { return ret; } } BITS_PARSE("general_level_idc", value, ps_bitstrm, 8); ps_ptl->s_ptl_gen.u1_level_idc = value; for(i = 0; i < max_num_sub_layers; i++) { BITS_PARSE("sub_layer_profile_present_flag[i]", value, ps_bitstrm, 1); ps_ptl->ai1_sub_layer_profile_present_flag[i] = value; BITS_PARSE("sub_layer_level_present_flag[i]", value, ps_bitstrm, 1); ps_ptl->ai1_sub_layer_level_present_flag[i] = value; } if(max_num_sub_layers > 0) { for(i = max_num_sub_layers; i < 8; i++) { BITS_PARSE("reserved_zero_2bits", value, ps_bitstrm, 2); } } for(i = 0; i < max_num_sub_layers; i++) { if(ps_ptl->ai1_sub_layer_profile_present_flag[i]) { ret = ihevcd_parse_profile_tier_level_layer(ps_bitstrm, &ps_ptl->as_ptl_sub[i]); } if(ps_ptl->ai1_sub_layer_level_present_flag[i]) { BITS_PARSE("sub_layer_level_idc[i]", value, ps_bitstrm, 8); ps_ptl->as_ptl_sub[i].u1_level_idc = value; } } return ret; } /** ******************************************************************************* * * @brief * Parses Scaling List Data syntax * * @par Description: * Parses Scaling List Data syntax as per Section: 7.3.6 * * @param[in] ps_codec * Pointer to codec context * * @returns Error code from IHEVCD_ERROR_T * * @remarks * * ******************************************************************************* */ IHEVCD_ERROR_T ihevcd_scaling_list_data(codec_t *ps_codec, WORD16 *pi2_scaling_mat) { IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS; WORD32 size_id; WORD32 matrix_id; WORD32 value, dc_value = 0; UWORD32 u4_value; WORD32 next_coef; WORD32 coef_num; WORD32 i, j, offset; bitstrm_t *ps_bitstrm = &ps_codec->s_parse.s_bitstrm; WORD16 *pi2_scaling_mat_offset; WORD32 scaling_mat_offset[] = { 0, 16, 32, 48, 64, 80, 96, 160, 224, 288, 352, 416, 480, 736, 992, 1248, 1504, 1760, 2016, 3040 }; UWORD8 *scan_table; for(size_id = 0; size_id < 4; size_id++) { for(matrix_id = 0; matrix_id < ((size_id == 3) ? 2 : 6); matrix_id++) { WORD32 scaling_list_pred_mode_flag; WORD32 scaling_list_delta_coef; BITS_PARSE("scaling_list_pred_mode_flag", scaling_list_pred_mode_flag, ps_bitstrm, 1); offset = size_id * 6 + matrix_id; pi2_scaling_mat_offset = pi2_scaling_mat + scaling_mat_offset[offset]; if(!scaling_list_pred_mode_flag) { WORD32 num_elements; UEV_PARSE("scaling_list_pred_matrix_id_delta", u4_value, ps_bitstrm); if(u4_value > matrix_id) { return IHEVCD_INVALID_PARAMETER; } num_elements = (1 << (4 + (size_id << 1))); if(0 != u4_value) memmove(pi2_scaling_mat_offset, pi2_scaling_mat_offset - u4_value * num_elements, num_elements * sizeof(WORD16)); } else { next_coef = 8; coef_num = MIN(64, (1 << (4 + (size_id << 1)))); if(size_id > 1) { SEV_PARSE("scaling_list_dc_coef_minus8", value, ps_bitstrm); if(value < -7 || value > 247) { return IHEVCD_INVALID_PARAMETER; } next_coef = value + 8; dc_value = next_coef; } if(size_id < 2) { scan_table = (UWORD8 *)gapv_ihevc_invscan[size_id + 1]; for(i = 0; i < coef_num; i++) { SEV_PARSE("scaling_list_delta_coef", scaling_list_delta_coef, ps_bitstrm); if((scaling_list_delta_coef < -256) || (scaling_list_delta_coef > 255)) { return IHEVCD_INVALID_PARAMETER; } next_coef = (next_coef + scaling_list_delta_coef + 256) % 256; pi2_scaling_mat_offset[scan_table[i]] = next_coef; } } else if(size_id == 2) { scan_table = (UWORD8 *)gapv_ihevc_invscan[2]; for(i = 0; i < coef_num; i++) { SEV_PARSE("scaling_list_delta_coef", scaling_list_delta_coef, ps_bitstrm); if((scaling_list_delta_coef < -256) || (scaling_list_delta_coef > 255)) { return IHEVCD_INVALID_PARAMETER; } next_coef = (next_coef + scaling_list_delta_coef + 256) % 256; offset = scan_table[i]; offset = (offset >> 3) * 16 * 2 + (offset & 0x7) * 2; pi2_scaling_mat_offset[offset] = next_coef; pi2_scaling_mat_offset[offset + 1] = next_coef; pi2_scaling_mat_offset[offset + 16] = next_coef; pi2_scaling_mat_offset[offset + 16 + 1] = next_coef; } pi2_scaling_mat_offset[0] = dc_value; } else { scan_table = (UWORD8 *)gapv_ihevc_invscan[2]; for(i = 0; i < coef_num; i++) { SEV_PARSE("scaling_list_delta_coef", scaling_list_delta_coef, ps_bitstrm); if((scaling_list_delta_coef < -256) || (scaling_list_delta_coef > 255)) { return IHEVCD_INVALID_PARAMETER; } next_coef = (next_coef + scaling_list_delta_coef + 256) % 256; offset = scan_table[i]; offset = (offset >> 3) * 32 * 4 + (offset & 0x7) * 4; for(j = 0; j < 4; j++) { pi2_scaling_mat_offset[offset + j * 32] = next_coef; pi2_scaling_mat_offset[offset + 1 + j * 32] = next_coef; pi2_scaling_mat_offset[offset + 2 + j * 32] = next_coef; pi2_scaling_mat_offset[offset + 3 + j * 32] = next_coef; } pi2_scaling_mat_offset[0] = dc_value; } } } } } return ret; } /** ******************************************************************************* * * @brief * Parses VPS (Video Parameter Set) * * @par Description: * Parse Video Parameter Set as per Section 7.3.2.1 * update vps structure corresponding to vps ID * Till parsing VPS id, the elements are stored in local variables and are copied * later * * @param[in] ps_codec * Pointer to codec context. * * @returns Error code from IHEVCD_ERROR_T * * @remarks * * ******************************************************************************* */ IHEVCD_ERROR_T ihevcd_parse_vps(codec_t *ps_codec) { IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS; WORD32 i; UWORD32 value; WORD32 vps_id; vps_t *ps_vps; bitstrm_t *ps_bitstrm = &ps_codec->s_parse.s_bitstrm; BITS_PARSE("vps_video_parameter_set_id", value, ps_bitstrm, 4); vps_id = value; if(vps_id >= MAX_VPS_CNT) { ps_codec->s_parse.i4_error_code = IHEVCD_UNSUPPORTED_VPS_ID; return IHEVCD_UNSUPPORTED_VPS_ID; } ps_vps = (ps_codec->s_parse.ps_vps_base + vps_id); ps_vps->i1_vps_id = vps_id; BITS_PARSE("vps_reserved_three_2bits", value, ps_bitstrm, 2); ASSERT(value == 3); BITS_PARSE("vps_max_layers_minus1", value, ps_bitstrm, 6); //ps_vps->i1_vps_max_layers = value + 1; BITS_PARSE("vps_max_sub_layers_minus1", value, ps_bitstrm, 3); if(value > SPS_MAX_SUB_LAYERS - 1) { return IHEVCD_INVALID_PARAMETER; } ps_vps->i1_vps_max_sub_layers = value + 1; ASSERT(ps_vps->i1_vps_max_sub_layers < VPS_MAX_SUB_LAYERS); BITS_PARSE("vps_temporal_id_nesting_flag", value, ps_bitstrm, 1); ps_vps->i1_vps_temporal_id_nesting_flag = value; BITS_PARSE("vps_reserved_ffff_16bits", value, ps_bitstrm, 16); ASSERT(value == 0xFFFF); // profile_and_level( 1, vps_max_sub_layers_minus1 ) ret = ihevcd_profile_tier_level(ps_bitstrm, &(ps_vps->s_ptl), 1, (ps_vps->i1_vps_max_sub_layers - 1)); BITS_PARSE("vps_sub_layer_ordering_info_present_flag", value, ps_bitstrm, 1); ps_vps->i1_sub_layer_ordering_info_present_flag = value; i = (ps_vps->i1_sub_layer_ordering_info_present_flag ? 0 : (ps_vps->i1_vps_max_sub_layers - 1)); for(; i < ps_vps->i1_vps_max_sub_layers; i++) { UEV_PARSE("vps_max_dec_pic_buffering[i]", value, ps_bitstrm); if(value > MAX_DPB_SIZE) { return IHEVCD_INVALID_PARAMETER; } ps_vps->ai1_vps_max_dec_pic_buffering[i] = value; /* vps_num_reorder_pics (no max) used in print in order to match with HM */ UEV_PARSE("vps_num_reorder_pics[i]", value, ps_bitstrm); if(value >= ps_vps->ai1_vps_max_dec_pic_buffering[i]) { return IHEVCD_INVALID_PARAMETER; } ps_vps->ai1_vps_max_num_reorder_pics[i] = value; UEV_PARSE("vps_max_latency_increase[i]", value, ps_bitstrm); if(value > UINT_MAX - 2) { return IHEVCD_INVALID_PARAMETER; } ps_vps->ai1_vps_max_latency_increase[i] = value; } BITS_PARSE("vps_max_layer_id", value, ps_bitstrm, 6); //ps_vps->i1_vps_max_layer_id = value; UEV_PARSE("vps_num_layer_sets_minus1", value, ps_bitstrm); if(value > 1023) { return IHEVCD_INVALID_PARAMETER; } //ps_vps->i1_vps_num_layer_sets = value + 1; BITS_PARSE("vps_timing_info_present_flag", value, ps_bitstrm, 1); //ps_vps->i1_vps_timing_info_present_flag = value; return ret; } /** ******************************************************************************* * * @brief * Parses SPS (Sequence Parameter Set) * sequence_parameter_set_rbsp() * * @par Description: * Parse Sequence Parameter Set as per section Section: 7.3.2.2 * The sps is written to a temporary buffer and copied later to the * appropriate location * * @param[in] ps_codec * Pointer to codec context * * @returns Error code from IHEVCD_ERROR_T * * @remarks * * ******************************************************************************* */ IHEVCD_ERROR_T ihevcd_parse_sps(codec_t *ps_codec) { IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS; UWORD32 value; WORD32 i; WORD32 vps_id; WORD32 sps_max_sub_layers; WORD32 sps_id; WORD32 sps_temporal_id_nesting_flag; sps_t *ps_sps; profile_tier_lvl_info_t s_ptl; bitstrm_t *ps_bitstrm = &ps_codec->s_parse.s_bitstrm; WORD32 ctb_log2_size_y = 0; BITS_PARSE("video_parameter_set_id", value, ps_bitstrm, 4); if(value > MAX_VPS_CNT - 1) { return IHEVCD_INVALID_PARAMETER; } vps_id = value; BITS_PARSE("sps_max_sub_layers_minus1", value, ps_bitstrm, 3); if(value > SPS_MAX_SUB_LAYERS - 1) { return IHEVCD_INVALID_PARAMETER; } sps_max_sub_layers = value + 1; BITS_PARSE("sps_temporal_id_nesting_flag", value, ps_bitstrm, 1); sps_temporal_id_nesting_flag = value; //profile_and_level( 1, sps_max_sub_layers_minus1 ) ret = ihevcd_profile_tier_level(ps_bitstrm, &(s_ptl), 1, (sps_max_sub_layers - 1)); UEV_PARSE("seq_parameter_set_id", value, ps_bitstrm); sps_id = value; if((sps_id >= MAX_SPS_CNT) || (sps_id < 0)) { if(ps_codec->i4_sps_done) return IHEVCD_UNSUPPORTED_SPS_ID; else sps_id = 0; } ps_sps = (ps_codec->s_parse.ps_sps_base + MAX_SPS_CNT - 1); /* Reset SPS to zero */ { WORD16 *pi2_scaling_mat = ps_sps->pi2_scaling_mat; memset(ps_sps, 0, sizeof(sps_t)); ps_sps->pi2_scaling_mat = pi2_scaling_mat; } ps_sps->i1_sps_id = sps_id; ps_sps->i1_vps_id = vps_id; ps_sps->i1_sps_max_sub_layers = sps_max_sub_layers; ps_sps->i1_sps_temporal_id_nesting_flag = sps_temporal_id_nesting_flag; memcpy(&ps_sps->s_ptl, &s_ptl, sizeof(profile_tier_lvl_info_t)); UEV_PARSE("chroma_format_idc", value, ps_bitstrm); if(value > 3) { return IHEVCD_INVALID_PARAMETER; } ps_sps->i1_chroma_format_idc = value; if(ps_sps->i1_chroma_format_idc != CHROMA_FMT_IDC_YUV420) { ps_codec->s_parse.i4_error_code = IHEVCD_UNSUPPORTED_CHROMA_FMT_IDC; return (IHEVCD_ERROR_T)IHEVCD_UNSUPPORTED_CHROMA_FMT_IDC; } if(CHROMA_FMT_IDC_YUV444_PLANES == ps_sps->i1_chroma_format_idc) { BITS_PARSE("separate_colour_plane_flag", value, ps_bitstrm, 1); ps_sps->i1_separate_colour_plane_flag = value; } else { ps_sps->i1_separate_colour_plane_flag = 0; } UEV_PARSE("pic_width_in_luma_samples", value, ps_bitstrm); if(value > INT16_MAX) { return (IHEVCD_ERROR_T)IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED; } ps_sps->i2_pic_width_in_luma_samples = value; UEV_PARSE("pic_height_in_luma_samples", value, ps_bitstrm); if(value > INT16_MAX) { return (IHEVCD_ERROR_T)IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED; } ps_sps->i2_pic_height_in_luma_samples = value; if((0 >= ps_sps->i2_pic_width_in_luma_samples) || (0 >= ps_sps->i2_pic_height_in_luma_samples)) return IHEVCD_INVALID_PARAMETER; BITS_PARSE("pic_cropping_flag", value, ps_bitstrm, 1); ps_sps->i1_pic_cropping_flag = value; if(ps_sps->i1_pic_cropping_flag) { UEV_PARSE("pic_crop_left_offset", value, ps_bitstrm); if (value >= ps_sps->i2_pic_width_in_luma_samples) { return IHEVCD_INVALID_PARAMETER; } ps_sps->i2_pic_crop_left_offset = value; UEV_PARSE("pic_crop_right_offset", value, ps_bitstrm); if (value >= ps_sps->i2_pic_width_in_luma_samples) { return IHEVCD_INVALID_PARAMETER; } ps_sps->i2_pic_crop_right_offset = value; UEV_PARSE("pic_crop_top_offset", value, ps_bitstrm); if (value >= ps_sps->i2_pic_height_in_luma_samples) { return IHEVCD_INVALID_PARAMETER; } ps_sps->i2_pic_crop_top_offset = value; UEV_PARSE("pic_crop_bottom_offset", value, ps_bitstrm); if (value >= ps_sps->i2_pic_height_in_luma_samples) { return IHEVCD_INVALID_PARAMETER; } ps_sps->i2_pic_crop_bottom_offset = value; } else { ps_sps->i2_pic_crop_left_offset = 0; ps_sps->i2_pic_crop_right_offset = 0; ps_sps->i2_pic_crop_top_offset = 0; ps_sps->i2_pic_crop_bottom_offset = 0; } UEV_PARSE("bit_depth_luma_minus8", value, ps_bitstrm); if(0 != value) return IHEVCD_UNSUPPORTED_BIT_DEPTH; UEV_PARSE("bit_depth_chroma_minus8", value, ps_bitstrm); if(0 != value) return IHEVCD_UNSUPPORTED_BIT_DEPTH; UEV_PARSE("log2_max_pic_order_cnt_lsb_minus4", value, ps_bitstrm); if(value > 12) return IHEVCD_INVALID_PARAMETER; ps_sps->i1_log2_max_pic_order_cnt_lsb = value + 4; BITS_PARSE("sps_sub_layer_ordering_info_present_flag", value, ps_bitstrm, 1); ps_sps->i1_sps_sub_layer_ordering_info_present_flag = value; i = (ps_sps->i1_sps_sub_layer_ordering_info_present_flag ? 0 : (ps_sps->i1_sps_max_sub_layers - 1)); for(; i < ps_sps->i1_sps_max_sub_layers; i++) { UEV_PARSE("max_dec_pic_buffering", value, ps_bitstrm); if(value > (MAX_DPB_SIZE - 1)) { return IHEVCD_INVALID_PARAMETER; } ps_sps->ai1_sps_max_dec_pic_buffering[i] = value + 1; UEV_PARSE("num_reorder_pics", value, ps_bitstrm); if(value >= ps_sps->ai1_sps_max_dec_pic_buffering[i]) { return IHEVCD_INVALID_PARAMETER; } ps_sps->ai1_sps_max_num_reorder_pics[i] = value; UEV_PARSE("max_latency_increase", value, ps_bitstrm); if(value > UINT_MAX - 2) { return IHEVCD_INVALID_PARAMETER; } ps_sps->ai1_sps_max_latency_increase[i] = value; } /* Check if sps_max_dec_pic_buffering or sps_max_num_reorder_pics has changed */ if(0 != ps_codec->u4_allocate_dynamic_done) { sps_t *ps_sps_old = ps_codec->s_parse.ps_sps; if(ps_sps_old->ai1_sps_max_dec_pic_buffering[ps_sps_old->i1_sps_max_sub_layers - 1] != ps_sps->ai1_sps_max_dec_pic_buffering[ps_sps->i1_sps_max_sub_layers - 1]) { if(0 == ps_codec->i4_first_pic_done) { return IHEVCD_INVALID_PARAMETER; } ps_codec->i4_reset_flag = 1; return (IHEVCD_ERROR_T)IVD_RES_CHANGED; } if(ps_sps_old->ai1_sps_max_num_reorder_pics[ps_sps_old->i1_sps_max_sub_layers - 1] != ps_sps->ai1_sps_max_num_reorder_pics[ps_sps->i1_sps_max_sub_layers - 1]) { if(0 == ps_codec->i4_first_pic_done) { return IHEVCD_INVALID_PARAMETER; } ps_codec->i4_reset_flag = 1; return (IHEVCD_ERROR_T)IVD_RES_CHANGED; } } UEV_PARSE("log2_min_coding_block_size_minus3", value, ps_bitstrm); if(value > (LOG2_MAX_CU_SIZE - 3)) { return IHEVCD_INVALID_PARAMETER; } ps_sps->i1_log2_min_coding_block_size = value + 3; if((ps_sps->i2_pic_width_in_luma_samples % (1 << ps_sps->i1_log2_min_coding_block_size) != 0) || (ps_sps->i2_pic_height_in_luma_samples % (1 << ps_sps->i1_log2_min_coding_block_size) != 0)) { return IHEVCD_INVALID_PARAMETER; } UEV_PARSE("log2_diff_max_min_coding_block_size", value, ps_bitstrm); if(value > (LOG2_MAX_CU_SIZE - ps_sps->i1_log2_min_coding_block_size)) { return IHEVCD_INVALID_PARAMETER; } ps_sps->i1_log2_diff_max_min_coding_block_size = value; ctb_log2_size_y = ps_sps->i1_log2_min_coding_block_size + ps_sps->i1_log2_diff_max_min_coding_block_size; if((ctb_log2_size_y < LOG2_MIN_CTB_SIZE) || (ctb_log2_size_y > LOG2_MAX_CTB_SIZE)) { return IHEVCD_INVALID_PARAMETER; } /* Check if CTB size is different in case of multiple SPS with same ID */ { sps_t *ps_sps_old = (ps_codec->s_parse.ps_sps_base + sps_id); if(ps_sps_old->i1_sps_valid && ps_sps_old->i1_log2_ctb_size != ctb_log2_size_y) { if(0 == ps_codec->i4_first_pic_done) { return IHEVCD_INVALID_PARAMETER; } ps_codec->i4_reset_flag = 1; return (IHEVCD_ERROR_T)IVD_RES_CHANGED; } } ps_sps->i1_log2_ctb_size = ctb_log2_size_y; UEV_PARSE("log2_min_transform_block_size_minus2", value, ps_bitstrm); if(value > (LOG2_MAX_TU_SIZE - 2)) { return IHEVCD_INVALID_PARAMETER; } ps_sps->i1_log2_min_transform_block_size = value + 2; if(ps_sps->i1_log2_min_transform_block_size >= ps_sps->i1_log2_min_coding_block_size) { return IHEVCD_INVALID_PARAMETER; } UEV_PARSE("log2_diff_max_min_transform_block_size", value, ps_bitstrm); if(value > (LOG2_MAX_TU_SIZE - ps_sps->i1_log2_min_transform_block_size)) { return IHEVCD_INVALID_PARAMETER; } ps_sps->i1_log2_diff_max_min_transform_block_size = value; ps_sps->i1_log2_max_transform_block_size = ps_sps->i1_log2_min_transform_block_size + ps_sps->i1_log2_diff_max_min_transform_block_size; if(ps_sps->i1_log2_max_transform_block_size > ps_sps->i1_log2_ctb_size) { return IHEVCD_INVALID_PARAMETER; } ps_sps->i1_log2_min_pcm_coding_block_size = 0; ps_sps->i1_log2_diff_max_min_pcm_coding_block_size = 0; UEV_PARSE("max_transform_hierarchy_depth_inter", value, ps_bitstrm); if(value > (ps_sps->i1_log2_ctb_size - ps_sps->i1_log2_min_transform_block_size)) { return IHEVCD_INVALID_PARAMETER; } ps_sps->i1_max_transform_hierarchy_depth_inter = value; UEV_PARSE("max_transform_hierarchy_depth_intra", value, ps_bitstrm); if(value > (ps_sps->i1_log2_ctb_size - ps_sps->i1_log2_min_transform_block_size)) { return IHEVCD_INVALID_PARAMETER; } ps_sps->i1_max_transform_hierarchy_depth_intra = value; /* String has a d (enabled) in order to match with HM */ BITS_PARSE("scaling_list_enabled_flag", value, ps_bitstrm, 1); ps_sps->i1_scaling_list_enable_flag = value; if(ps_sps->i1_scaling_list_enable_flag) { COPY_DEFAULT_SCALING_LIST(ps_sps->pi2_scaling_mat); BITS_PARSE("sps_scaling_list_data_present_flag", value, ps_bitstrm, 1); ps_sps->i1_sps_scaling_list_data_present_flag = value; if(ps_sps->i1_sps_scaling_list_data_present_flag) ihevcd_scaling_list_data(ps_codec, ps_sps->pi2_scaling_mat); } else { COPY_FLAT_SCALING_LIST(ps_sps->pi2_scaling_mat); } /* String is asymmetric_motion_partitions_enabled_flag instead of amp_enabled_flag in order to match with HM */ BITS_PARSE("asymmetric_motion_partitions_enabled_flag", value, ps_bitstrm, 1); ps_sps->i1_amp_enabled_flag = value; BITS_PARSE("sample_adaptive_offset_enabled_flag", value, ps_bitstrm, 1); ps_sps->i1_sample_adaptive_offset_enabled_flag = value; BITS_PARSE("pcm_enabled_flag", value, ps_bitstrm, 1); ps_sps->i1_pcm_enabled_flag = value; if(ps_sps->i1_pcm_enabled_flag) { BITS_PARSE("pcm_sample_bit_depth_luma", value, ps_bitstrm, 4); ps_sps->i1_pcm_sample_bit_depth_luma = value + 1; BITS_PARSE("pcm_sample_bit_depth_chroma", value, ps_bitstrm, 4); ps_sps->i1_pcm_sample_bit_depth_chroma = value + 1; UEV_PARSE("log2_min_pcm_coding_block_size_minus3", value, ps_bitstrm); if(value < (ps_sps->i1_log2_min_coding_block_size - 3) || value > (MIN(ctb_log2_size_y, 5) - 3)) { return IHEVCD_INVALID_PARAMETER; } ps_sps->i1_log2_min_pcm_coding_block_size = value + 3; UEV_PARSE("log2_diff_max_min_pcm_coding_block_size", value, ps_bitstrm); if(value > MIN(ctb_log2_size_y, 5) - ps_sps->i1_log2_min_pcm_coding_block_size) { return IHEVCD_INVALID_PARAMETER; } ps_sps->i1_log2_diff_max_min_pcm_coding_block_size = value; BITS_PARSE("pcm_loop_filter_disable_flag", value, ps_bitstrm, 1); ps_sps->i1_pcm_loop_filter_disable_flag = value; } UEV_PARSE("num_short_term_ref_pic_sets", value, ps_bitstrm); if(value > MAX_STREF_PICS_SPS) { return IHEVCD_INVALID_PARAMETER; } ps_sps->i1_num_short_term_ref_pic_sets = value; for(i = 0; i < ps_sps->i1_num_short_term_ref_pic_sets; i++) { ret = ihevcd_short_term_ref_pic_set(ps_bitstrm, &ps_sps->as_stref_picset[0], ps_sps->i1_num_short_term_ref_pic_sets, i, &ps_sps->as_stref_picset[i]); if (ret != IHEVCD_SUCCESS) { return ret; } } BITS_PARSE("long_term_ref_pics_present_flag", value, ps_bitstrm, 1); ps_sps->i1_long_term_ref_pics_present_flag = value; if(ps_sps->i1_long_term_ref_pics_present_flag) { UEV_PARSE("num_long_term_ref_pics_sps", value, ps_bitstrm); if(value > MAX_LTREF_PICS_SPS) { return IHEVCD_INVALID_PARAMETER; } ps_sps->i1_num_long_term_ref_pics_sps = value; for(i = 0; i < ps_sps->i1_num_long_term_ref_pics_sps; i++) { BITS_PARSE("lt_ref_pic_poc_lsb_sps[ i ]", value, ps_bitstrm, ps_sps->i1_log2_max_pic_order_cnt_lsb); ps_sps->au2_lt_ref_pic_poc_lsb_sps[i] = value; BITS_PARSE("used_by_curr_pic_lt_sps_flag[ i ]", value, ps_bitstrm, 1); ps_sps->ai1_used_by_curr_pic_lt_sps_flag[i] = value; } } BITS_PARSE("sps_temporal_mvp_enable_flag", value, ps_bitstrm, 1); ps_sps->i1_sps_temporal_mvp_enable_flag = value; /* Print matches HM 8-2 */ BITS_PARSE("sps_strong_intra_smoothing_enable_flag", value, ps_bitstrm, 1); ps_sps->i1_strong_intra_smoothing_enable_flag = value; BITS_PARSE("vui_parameters_present_flag", value, ps_bitstrm, 1); ps_sps->i1_vui_parameters_present_flag = value; if(ps_sps->i1_vui_parameters_present_flag) { ret = ihevcd_parse_vui_parameters(ps_bitstrm, &ps_sps->s_vui_parameters, ps_sps->i1_sps_max_sub_layers - 1); RETURN_IF((ret != (IHEVCD_ERROR_T)IHEVCD_SUCCESS), ret); } BITS_PARSE("sps_extension_flag", value, ps_bitstrm, 1); if((UWORD8 *)ps_bitstrm->pu4_buf > ps_bitstrm->pu1_buf_max) { return IHEVCD_INVALID_PARAMETER; } { WORD32 numerator; WORD32 ceil_offset; ceil_offset = (1 << ps_sps->i1_log2_ctb_size) - 1; numerator = ps_sps->i2_pic_width_in_luma_samples; ps_sps->i2_pic_wd_in_ctb = ((numerator + ceil_offset) / (1 << ps_sps->i1_log2_ctb_size)); numerator = ps_sps->i2_pic_height_in_luma_samples; ps_sps->i2_pic_ht_in_ctb = ((numerator + ceil_offset) / (1 << ps_sps->i1_log2_ctb_size)); ps_sps->i4_pic_size_in_ctb = ps_sps->i2_pic_ht_in_ctb * ps_sps->i2_pic_wd_in_ctb; if(0 == ps_codec->i4_sps_done) ps_codec->s_parse.i4_next_ctb_indx = ps_sps->i4_pic_size_in_ctb; numerator = ps_sps->i2_pic_width_in_luma_samples; ps_sps->i2_pic_wd_in_min_cb = numerator / (1 << ps_sps->i1_log2_min_coding_block_size); numerator = ps_sps->i2_pic_height_in_luma_samples; ps_sps->i2_pic_ht_in_min_cb = numerator / (1 << ps_sps->i1_log2_min_coding_block_size); } if((0 != ps_codec->u4_allocate_dynamic_done) && ((ps_codec->i4_wd != ps_sps->i2_pic_width_in_luma_samples) || (ps_codec->i4_ht != ps_sps->i2_pic_height_in_luma_samples))) { if(0 == ps_codec->i4_first_pic_done) { return IHEVCD_INVALID_PARAMETER; } ps_codec->i4_reset_flag = 1; return (IHEVCD_ERROR_T)IVD_RES_CHANGED; } if((ps_sps->i2_pic_width_in_luma_samples > MAX_WD) || ((ps_sps->i2_pic_width_in_luma_samples * ps_sps->i2_pic_height_in_luma_samples) > (MAX_WD * MAX_HT))) { return (IHEVCD_ERROR_T)IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED; } /* Update display width and display height */ { WORD32 disp_wd, disp_ht; WORD32 crop_unit_x, crop_unit_y; crop_unit_x = 1; crop_unit_y = 1; if(CHROMA_FMT_IDC_YUV420 == ps_sps->i1_chroma_format_idc) { crop_unit_x = 2; crop_unit_y = 2; } disp_wd = ps_sps->i2_pic_width_in_luma_samples; disp_wd -= ps_sps->i2_pic_crop_left_offset * crop_unit_x; disp_wd -= ps_sps->i2_pic_crop_right_offset * crop_unit_x; disp_ht = ps_sps->i2_pic_height_in_luma_samples; disp_ht -= ps_sps->i2_pic_crop_top_offset * crop_unit_y; disp_ht -= ps_sps->i2_pic_crop_bottom_offset * crop_unit_y; if((0 >= disp_wd) || (0 >= disp_ht)) return IHEVCD_INVALID_PARAMETER; if((0 != ps_codec->u4_allocate_dynamic_done) && ((ps_codec->i4_disp_wd != disp_wd) || (ps_codec->i4_disp_ht != disp_ht))) { if(0 == ps_codec->i4_first_pic_done) { return IHEVCD_INVALID_PARAMETER; } ps_codec->i4_reset_flag = 1; return (IHEVCD_ERROR_T)IVD_RES_CHANGED; } ps_codec->i4_disp_wd = disp_wd; ps_codec->i4_disp_ht = disp_ht; ps_codec->i4_wd = ps_sps->i2_pic_width_in_luma_samples; ps_codec->i4_ht = ps_sps->i2_pic_height_in_luma_samples; { WORD32 ref_strd; ref_strd = ALIGN32(ps_sps->i2_pic_width_in_luma_samples + PAD_WD); if(ps_codec->i4_strd < ref_strd) { ps_codec->i4_strd = ref_strd; } } if(0 == ps_codec->i4_share_disp_buf) { if(ps_codec->i4_disp_strd < ps_codec->i4_disp_wd) { ps_codec->i4_disp_strd = ps_codec->i4_disp_wd; } } else { if(ps_codec->i4_disp_strd < ps_codec->i4_strd) { ps_codec->i4_disp_strd = ps_codec->i4_strd; } } } /* This is used only during initialization to get reorder count etc */ ps_codec->i4_sps_id = sps_id; ps_codec->i4_sps_done = 1; return ret; } void ihevcd_unmark_pps(codec_t *ps_codec, WORD32 sps_id) { WORD32 pps_id = 0; pps_t *ps_pps = ps_codec->ps_pps_base; for(pps_id = 0; pps_id < MAX_PPS_CNT - 1; pps_id++, ps_pps++) { if((ps_pps->i1_pps_valid) && (ps_pps->i1_sps_id == sps_id)) ps_pps->i1_pps_valid = 0; } } void ihevcd_copy_sps(codec_t *ps_codec, WORD32 sps_id, WORD32 sps_id_ref) { sps_t *ps_sps, *ps_sps_ref; WORD16 *pi2_scaling_mat_backup; WORD32 scaling_mat_size; SCALING_MAT_SIZE(scaling_mat_size); ps_sps_ref = ps_codec->ps_sps_base + sps_id_ref; ps_sps = ps_codec->ps_sps_base + sps_id; if(ps_sps->i1_sps_valid) { if((ps_sps->i1_log2_ctb_size != ps_sps_ref->i1_log2_ctb_size) || (ps_sps->i2_pic_wd_in_ctb != ps_sps_ref->i2_pic_wd_in_ctb) || (ps_sps->i2_pic_ht_in_ctb != ps_sps_ref->i2_pic_ht_in_ctb)) { ihevcd_unmark_pps(ps_codec, sps_id); } } pi2_scaling_mat_backup = ps_sps->pi2_scaling_mat; memcpy(ps_sps, ps_sps_ref, sizeof(sps_t)); ps_sps->pi2_scaling_mat = pi2_scaling_mat_backup; memcpy(ps_sps->pi2_scaling_mat, ps_sps_ref->pi2_scaling_mat, scaling_mat_size * sizeof(WORD16)); ps_sps->i1_sps_valid = 1; ps_codec->s_parse.ps_sps = ps_sps; } /** ******************************************************************************* * * @brief * Parses PPS (Picture Parameter Set) * * @par Description: * Parse Picture Parameter Set as per section Section: 7.3.2.3 * The pps is written to a temporary buffer and copied later to the * appropriate location * * @param[in] ps_codec * Pointer to codec context * * @returns Error code from IHEVCD_ERROR_T * * @remarks * * ******************************************************************************* */ IHEVCD_ERROR_T ihevcd_parse_pps(codec_t *ps_codec) { IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS; UWORD32 value; WORD32 i4_value; WORD32 pps_id; pps_t *ps_pps; sps_t *ps_sps; bitstrm_t *ps_bitstrm = &ps_codec->s_parse.s_bitstrm; if(0 == ps_codec->i4_sps_done) return IHEVCD_INVALID_HEADER; UEV_PARSE("pic_parameter_set_id", value, ps_bitstrm); pps_id = value; if((pps_id >= MAX_PPS_CNT) || (pps_id < 0)) { if(ps_codec->i4_pps_done) return IHEVCD_UNSUPPORTED_PPS_ID; else pps_id = 0; } ps_pps = (ps_codec->s_parse.ps_pps_base + MAX_PPS_CNT - 1); ps_pps->i1_pps_id = pps_id; UEV_PARSE("seq_parameter_set_id", value, ps_bitstrm); if(value > MAX_SPS_CNT - 2) { return IHEVCD_INVALID_PARAMETER; } ps_pps->i1_sps_id = value; ps_sps = (ps_codec->s_parse.ps_sps_base + ps_pps->i1_sps_id); /* If the SPS that is being referred to has not been parsed, * copy an existing SPS to the current location */ if(0 == ps_sps->i1_sps_valid) { return IHEVCD_INVALID_HEADER; /* sps_t *ps_sps_ref = ps_codec->ps_sps_base; while(0 == ps_sps_ref->i1_sps_valid) ps_sps_ref++; ihevcd_copy_sps(ps_codec, ps_pps->i1_sps_id, ps_sps_ref->i1_sps_id); */ } BITS_PARSE("dependent_slices_enabled_flag", value, ps_bitstrm, 1); ps_pps->i1_dependent_slice_enabled_flag = value; BITS_PARSE("output_flag_present_flag", value, ps_bitstrm, 1); ps_pps->i1_output_flag_present_flag = value; BITS_PARSE("num_extra_slice_header_bits", value, ps_bitstrm, 3); ps_pps->i1_num_extra_slice_header_bits = value; BITS_PARSE("sign_data_hiding_flag", value, ps_bitstrm, 1); ps_pps->i1_sign_data_hiding_flag = value; BITS_PARSE("cabac_init_present_flag", value, ps_bitstrm, 1); ps_pps->i1_cabac_init_present_flag = value; UEV_PARSE("num_ref_idx_l0_default_active_minus1", value, ps_bitstrm); if(value > MAX_DPB_SIZE - 2) { return IHEVCD_INVALID_PARAMETER; } ps_pps->i1_num_ref_idx_l0_default_active = value + 1; UEV_PARSE("num_ref_idx_l1_default_active_minus1", value, ps_bitstrm); if(value > MAX_DPB_SIZE - 2) { return IHEVCD_INVALID_PARAMETER; } ps_pps->i1_num_ref_idx_l1_default_active = value + 1; SEV_PARSE("pic_init_qp_minus26", i4_value, ps_bitstrm); if(i4_value < -26 || i4_value > 25) { return IHEVCD_INVALID_PARAMETER; } ps_pps->i1_pic_init_qp = i4_value + 26; BITS_PARSE("constrained_intra_pred_flag", value, ps_bitstrm, 1); ps_pps->i1_constrained_intra_pred_flag = value; BITS_PARSE("transform_skip_enabled_flag", value, ps_bitstrm, 1); ps_pps->i1_transform_skip_enabled_flag = value; BITS_PARSE("cu_qp_delta_enabled_flag", value, ps_bitstrm, 1); ps_pps->i1_cu_qp_delta_enabled_flag = value; if(ps_pps->i1_cu_qp_delta_enabled_flag) { UEV_PARSE("diff_cu_qp_delta_depth", value, ps_bitstrm); if(value > ps_sps->i1_log2_diff_max_min_coding_block_size) { return IHEVCD_INVALID_PARAMETER; } ps_pps->i1_diff_cu_qp_delta_depth = value; } else { ps_pps->i1_diff_cu_qp_delta_depth = 0; } ps_pps->i1_log2_min_cu_qp_delta_size = ps_sps->i1_log2_ctb_size - ps_pps->i1_diff_cu_qp_delta_depth; /* Print different */ SEV_PARSE("cb_qp_offset", i4_value, ps_bitstrm); if(i4_value < -12 || i4_value > 12) { return IHEVCD_INVALID_PARAMETER; } ps_pps->i1_pic_cb_qp_offset = i4_value; /* Print different */ SEV_PARSE("cr_qp_offset", i4_value, ps_bitstrm); if(i4_value < -12 || i4_value > 12) { return IHEVCD_INVALID_PARAMETER; } ps_pps->i1_pic_cr_qp_offset = i4_value; /* Print different */ BITS_PARSE("slicelevel_chroma_qp_flag", value, ps_bitstrm, 1); ps_pps->i1_pic_slice_level_chroma_qp_offsets_present_flag = value; BITS_PARSE("weighted_pred_flag", value, ps_bitstrm, 1); ps_pps->i1_weighted_pred_flag = value; BITS_PARSE("weighted_bipred_flag", value, ps_bitstrm, 1); ps_pps->i1_weighted_bipred_flag = value; BITS_PARSE("transquant_bypass_enable_flag", value, ps_bitstrm, 1); ps_pps->i1_transquant_bypass_enable_flag = value; BITS_PARSE("tiles_enabled_flag", value, ps_bitstrm, 1); ps_pps->i1_tiles_enabled_flag = value; /* When tiles are enabled and width or height is >= 4096, * CTB Size should at least be 32 while if width or height is >= 8192, * CTB Size should at least be 64 and so on. 16x16 CTBs can result * in tile position greater than 255 for 4096 while 32x32 CTBs can result * in tile position greater than 255 for 8192, * which decoder does not support. */ if (ps_pps->i1_tiles_enabled_flag) { if((ps_sps->i1_log2_ctb_size == 4) && ((ps_sps->i2_pic_width_in_luma_samples >= 4096) || (ps_sps->i2_pic_height_in_luma_samples >= 4096))) { return IHEVCD_INVALID_HEADER; } if((ps_sps->i1_log2_ctb_size == 5) && ((ps_sps->i2_pic_width_in_luma_samples >= 8192) || (ps_sps->i2_pic_height_in_luma_samples >= 8192))) { return IHEVCD_INVALID_HEADER; } if((ps_sps->i1_log2_ctb_size == 6) && ((ps_sps->i2_pic_width_in_luma_samples >= 16384) || (ps_sps->i2_pic_height_in_luma_samples >= 16384))) { return IHEVCD_INVALID_HEADER; } } BITS_PARSE("entropy_coding_sync_enabled_flag", value, ps_bitstrm, 1); ps_pps->i1_entropy_coding_sync_enabled_flag = value; ps_pps->i1_loop_filter_across_tiles_enabled_flag = 0; if(ps_pps->i1_tiles_enabled_flag) { WORD32 wd = ALIGN64(ps_codec->i4_wd); WORD32 ht = ALIGN64(ps_codec->i4_ht); WORD32 max_tile_cols = (wd + MIN_TILE_WD - 1) / MIN_TILE_WD; WORD32 max_tile_rows = (ht + MIN_TILE_HT - 1) / MIN_TILE_HT; UEV_PARSE("num_tile_columns_minus1", value, ps_bitstrm); ps_pps->i1_num_tile_columns = value + 1; UEV_PARSE("num_tile_rows_minus1", value, ps_bitstrm); ps_pps->i1_num_tile_rows = value + 1; if((ps_pps->i1_num_tile_columns < 1) || (ps_pps->i1_num_tile_columns > max_tile_cols) || (ps_pps->i1_num_tile_rows < 1) || (ps_pps->i1_num_tile_rows > max_tile_rows)) return IHEVCD_INVALID_HEADER; BITS_PARSE("uniform_spacing_flag", value, ps_bitstrm, 1); ps_pps->i1_uniform_spacing_flag = value; { UWORD32 start; WORD32 i, j; start = 0; for(i = 0; i < ps_pps->i1_num_tile_columns; i++) { tile_t *ps_tile; if(!ps_pps->i1_uniform_spacing_flag) { if(i < (ps_pps->i1_num_tile_columns - 1)) { UEV_PARSE("column_width_minus1[ i ]", value, ps_bitstrm); value += 1; if (value >= ps_sps->i2_pic_wd_in_ctb - start) { return IHEVCD_INVALID_HEADER; } } else { value = ps_sps->i2_pic_wd_in_ctb - start; } } else { value = ((i + 1) * ps_sps->i2_pic_wd_in_ctb) / ps_pps->i1_num_tile_columns - (i * ps_sps->i2_pic_wd_in_ctb) / ps_pps->i1_num_tile_columns; } for(j = 0; j < ps_pps->i1_num_tile_rows; j++) { ps_tile = ps_pps->ps_tile + j * ps_pps->i1_num_tile_columns + i; ps_tile->u1_pos_x = start; ps_tile->u2_wd = value; } start += value; if((start > ps_sps->i2_pic_wd_in_ctb) || (value == 0)) return IHEVCD_INVALID_HEADER; } start = 0; for(i = 0; i < (ps_pps->i1_num_tile_rows); i++) { tile_t *ps_tile; if(!ps_pps->i1_uniform_spacing_flag) { if(i < (ps_pps->i1_num_tile_rows - 1)) { UEV_PARSE("row_height_minus1[ i ]", value, ps_bitstrm); value += 1; if (value >= ps_sps->i2_pic_ht_in_ctb - start) { return IHEVCD_INVALID_HEADER; } } else { value = ps_sps->i2_pic_ht_in_ctb - start; } } else { value = ((i + 1) * ps_sps->i2_pic_ht_in_ctb) / ps_pps->i1_num_tile_rows - (i * ps_sps->i2_pic_ht_in_ctb) / ps_pps->i1_num_tile_rows; } for(j = 0; j < ps_pps->i1_num_tile_columns; j++) { ps_tile = ps_pps->ps_tile + i * ps_pps->i1_num_tile_columns + j; ps_tile->u1_pos_y = start; ps_tile->u2_ht = value; } start += value; if((start > ps_sps->i2_pic_ht_in_ctb) || (value == 0)) return IHEVCD_INVALID_HEADER; } } BITS_PARSE("loop_filter_across_tiles_enabled_flag", value, ps_bitstrm, 1); ps_pps->i1_loop_filter_across_tiles_enabled_flag = value; } else { /* If tiles are not present, set first tile in each PPS to have tile width and height equal to picture width and height */ ps_pps->i1_num_tile_columns = 1; ps_pps->i1_num_tile_rows = 1; ps_pps->i1_uniform_spacing_flag = 1; ps_pps->ps_tile->u1_pos_x = 0; ps_pps->ps_tile->u1_pos_y = 0; ps_pps->ps_tile->u2_wd = ps_sps->i2_pic_wd_in_ctb; ps_pps->ps_tile->u2_ht = ps_sps->i2_pic_ht_in_ctb; } BITS_PARSE("loop_filter_across_slices_enabled_flag", value, ps_bitstrm, 1); ps_pps->i1_loop_filter_across_slices_enabled_flag = value; BITS_PARSE("deblocking_filter_control_present_flag", value, ps_bitstrm, 1); ps_pps->i1_deblocking_filter_control_present_flag = value; /* Default values */ ps_pps->i1_pic_disable_deblocking_filter_flag = 0; ps_pps->i1_deblocking_filter_override_enabled_flag = 0; ps_pps->i1_beta_offset_div2 = 0; ps_pps->i1_tc_offset_div2 = 0; if(ps_pps->i1_deblocking_filter_control_present_flag) { BITS_PARSE("deblocking_filter_override_enabled_flag", value, ps_bitstrm, 1); ps_pps->i1_deblocking_filter_override_enabled_flag = value; BITS_PARSE("pic_disable_deblocking_filter_flag", value, ps_bitstrm, 1); ps_pps->i1_pic_disable_deblocking_filter_flag = value; if(!ps_pps->i1_pic_disable_deblocking_filter_flag) { SEV_PARSE("pps_beta_offset_div2", i4_value, ps_bitstrm); if(i4_value < -6 || i4_value > 6) { return IHEVCD_INVALID_PARAMETER; } ps_pps->i1_beta_offset_div2 = i4_value; SEV_PARSE("pps_tc_offset_div2", i4_value, ps_bitstrm); if(i4_value < -6 || i4_value > 6) { return IHEVCD_INVALID_PARAMETER; } ps_pps->i1_tc_offset_div2 = i4_value; } } BITS_PARSE("pps_scaling_list_data_present_flag", value, ps_bitstrm, 1); ps_pps->i1_pps_scaling_list_data_present_flag = value; if(ps_pps->i1_pps_scaling_list_data_present_flag) { COPY_DEFAULT_SCALING_LIST(ps_pps->pi2_scaling_mat); ihevcd_scaling_list_data(ps_codec, ps_pps->pi2_scaling_mat); } BITS_PARSE("lists_modification_present_flag", value, ps_bitstrm, 1); ps_pps->i1_lists_modification_present_flag = value; UEV_PARSE("log2_parallel_merge_level_minus2", value, ps_bitstrm); if(value > (ps_sps->i1_log2_min_coding_block_size + ps_sps->i1_log2_diff_max_min_coding_block_size)) { return IHEVCD_INVALID_PARAMETER; } ps_pps->i1_log2_parallel_merge_level = value + 2; BITS_PARSE("slice_header_extension_present_flag", value, ps_bitstrm, 1); ps_pps->i1_slice_header_extension_present_flag = value; /* Not present in HM */ BITS_PARSE("pps_extension_flag", value, ps_bitstrm, 1); if((UWORD8 *)ps_bitstrm->pu4_buf > ps_bitstrm->pu1_buf_max) return IHEVCD_INVALID_PARAMETER; ps_codec->i4_pps_done = 1; return ret; } void ihevcd_copy_pps(codec_t *ps_codec, WORD32 pps_id, WORD32 pps_id_ref) { pps_t *ps_pps, *ps_pps_ref; WORD16 *pi2_scaling_mat_backup; WORD32 scaling_mat_size; tile_t *ps_tile_backup; WORD32 max_tile_cols, max_tile_rows; WORD32 wd, ht; wd = ALIGN64(ps_codec->i4_wd); ht = ALIGN64(ps_codec->i4_ht); SCALING_MAT_SIZE(scaling_mat_size); max_tile_cols = (wd + MIN_TILE_WD - 1) / MIN_TILE_WD; max_tile_rows = (ht + MIN_TILE_HT - 1) / MIN_TILE_HT; ps_pps_ref = ps_codec->ps_pps_base + pps_id_ref; ps_pps = ps_codec->ps_pps_base + pps_id; pi2_scaling_mat_backup = ps_pps->pi2_scaling_mat; ps_tile_backup = ps_pps->ps_tile; memcpy(ps_pps, ps_pps_ref, sizeof(pps_t)); ps_pps->pi2_scaling_mat = pi2_scaling_mat_backup; ps_pps->ps_tile = ps_tile_backup; memcpy(ps_pps->pi2_scaling_mat, ps_pps_ref->pi2_scaling_mat, scaling_mat_size * sizeof(WORD16)); memcpy(ps_pps->ps_tile, ps_pps_ref->ps_tile, max_tile_cols * max_tile_rows * sizeof(tile_t)); ps_pps->i1_pps_valid = 1; ps_codec->s_parse.ps_pps = ps_pps; } IHEVCD_ERROR_T ihevcd_parse_buffering_period_sei(codec_t *ps_codec, sps_t *ps_sps) { parse_ctxt_t *ps_parse = &ps_codec->s_parse; bitstrm_t *ps_bitstrm = &ps_parse->s_bitstrm; UWORD32 value; vui_t *ps_vui; buf_period_sei_params_t *ps_buf_period_sei_params; UWORD32 i; hrd_params_t *ps_vui_hdr; UWORD32 u4_cpb_cnt; ps_vui = &ps_sps->s_vui_parameters; ps_vui_hdr = &ps_vui->s_vui_hrd_parameters; ps_buf_period_sei_params = &ps_parse->s_sei_params.s_buf_period_sei_params; ps_parse->s_sei_params.i1_buf_period_params_present_flag = 1; UEV_PARSE("bp_seq_parameter_set_id", value, ps_bitstrm); if(value > MAX_SPS_CNT - 2) { return IHEVCD_INVALID_PARAMETER; } ps_buf_period_sei_params->u1_bp_seq_parameter_set_id = value; if(!ps_vui_hdr->u1_sub_pic_cpb_params_present_flag) { BITS_PARSE("irap_cpb_params_present_flag", value, ps_bitstrm, 1); ps_buf_period_sei_params->u1_rap_cpb_params_present_flag = value; } if(ps_buf_period_sei_params->u1_rap_cpb_params_present_flag) { BITS_PARSE("cpb_delay_offset", value, ps_bitstrm, (ps_vui_hdr->u1_au_cpb_removal_delay_length_minus1 + 1)); ps_buf_period_sei_params->u4_cpb_delay_offset = value; BITS_PARSE("dpb_delay_offset", value, ps_bitstrm, (ps_vui_hdr->u1_dpb_output_delay_length_minus1 + 1)); ps_buf_period_sei_params->u4_dpb_delay_offset = value; } else { ps_buf_period_sei_params->u4_cpb_delay_offset = 0; ps_buf_period_sei_params->u4_dpb_delay_offset = 0; } BITS_PARSE("concatenation_flag", value, ps_bitstrm, 1); ps_buf_period_sei_params->u1_concatenation_flag = value; BITS_PARSE("au_cpb_removal_delay_delta_minus1", value, ps_bitstrm, (ps_vui_hdr->u1_au_cpb_removal_delay_length_minus1 + 1)); ps_buf_period_sei_params->u4_au_cpb_removal_delay_delta_minus1 = value; if(ps_vui_hdr->u1_nal_hrd_parameters_present_flag) { u4_cpb_cnt = ps_vui_hdr->au1_cpb_cnt_minus1[0]; for(i = 0; i <= u4_cpb_cnt; i++) { BITS_PARSE("nal_initial_cpb_removal_delay[i]", value, ps_bitstrm, (ps_vui_hdr->u1_initial_cpb_removal_delay_length_minus1 + 1)); ps_buf_period_sei_params->au4_nal_initial_cpb_removal_delay[i] = value; BITS_PARSE("nal_initial_cpb_removal_delay_offset", value, ps_bitstrm, (ps_vui_hdr->u1_initial_cpb_removal_delay_length_minus1 + 1)); ps_buf_period_sei_params->au4_nal_initial_cpb_removal_delay_offset[i] = value; if(ps_vui_hdr->u1_sub_pic_cpb_params_present_flag || ps_buf_period_sei_params->u1_rap_cpb_params_present_flag) { BITS_PARSE("nal_initial_alt_cpb_removal_delay[i]", value, ps_bitstrm, (ps_vui_hdr->u1_initial_cpb_removal_delay_length_minus1 + 1)); ps_buf_period_sei_params->au4_nal_initial_alt_cpb_removal_delay[i] = value; BITS_PARSE("nal_initial_alt_cpb_removal_delay_offset", value, ps_bitstrm, (ps_vui_hdr->u1_initial_cpb_removal_delay_length_minus1 + 1)); ps_buf_period_sei_params->au4_nal_initial_alt_cpb_removal_delay_offset[i] = value; } } } if(ps_vui_hdr->u1_vcl_hrd_parameters_present_flag) { u4_cpb_cnt = ps_vui_hdr->au1_cpb_cnt_minus1[0]; for(i = 0; i <= u4_cpb_cnt; i++) { BITS_PARSE("vcl_initial_cpb_removal_delay[i]", value, ps_bitstrm, (ps_vui_hdr->u1_initial_cpb_removal_delay_length_minus1 + 1)); ps_buf_period_sei_params->au4_vcl_initial_cpb_removal_delay[i] = value; BITS_PARSE("vcl_initial_cpb_removal_delay_offset", value, ps_bitstrm, (ps_vui_hdr->u1_initial_cpb_removal_delay_length_minus1 + 1)); ps_buf_period_sei_params->au4_vcl_initial_cpb_removal_delay_offset[i] = value; if(ps_vui_hdr->u1_sub_pic_cpb_params_present_flag || ps_buf_period_sei_params->u1_rap_cpb_params_present_flag) { BITS_PARSE("vcl_initial_alt_cpb_removal_delay[i]", value, ps_bitstrm, (ps_vui_hdr->u1_initial_cpb_removal_delay_length_minus1 + 1)); ps_buf_period_sei_params->au4_vcl_initial_alt_cpb_removal_delay[i] = value; BITS_PARSE("vcl_initial_alt_cpb_removal_delay_offset", value, ps_bitstrm, (ps_vui_hdr->u1_initial_cpb_removal_delay_length_minus1 + 1)); ps_buf_period_sei_params->au4_vcl_initial_alt_cpb_removal_delay_offset[i] = value; } } } return (IHEVCD_ERROR_T)IHEVCD_SUCCESS; } IHEVCD_ERROR_T ihevcd_parse_pic_timing_sei(codec_t *ps_codec, sps_t *ps_sps) { parse_ctxt_t *ps_parse = &ps_codec->s_parse; bitstrm_t *ps_bitstrm = &ps_parse->s_bitstrm; UWORD32 value; vui_t *ps_vui; UWORD32 i; hrd_params_t *ps_vui_hdr; UWORD32 u4_cpb_dpb_delays_present_flag = 0; pic_timing_sei_params_t *ps_pic_timing; ps_pic_timing = &ps_parse->s_sei_params.s_pic_timing_sei_params; ps_vui = &ps_sps->s_vui_parameters; ps_vui_hdr = &ps_vui->s_vui_hrd_parameters; ps_parse->s_sei_params.i1_pic_timing_params_present_flag = 1; if(ps_vui->u1_frame_field_info_present_flag) { BITS_PARSE("pic_struct", value, ps_bitstrm, 4); ps_pic_timing->u4_pic_struct = value; BITS_PARSE("source_scan_type", value, ps_bitstrm, 2); ps_pic_timing->u4_source_scan_type = value; BITS_PARSE("duplicate_flag", value, ps_bitstrm, 1); ps_pic_timing->u1_duplicate_flag = value; } if(ps_vui_hdr->u1_nal_hrd_parameters_present_flag || ps_vui_hdr->u1_vcl_hrd_parameters_present_flag) { u4_cpb_dpb_delays_present_flag = 1; } else { u4_cpb_dpb_delays_present_flag = 0; } if(u4_cpb_dpb_delays_present_flag) { BITS_PARSE("au_cpb_removal_delay_minus1", value, ps_bitstrm, (ps_vui_hdr->u1_au_cpb_removal_delay_length_minus1 + 1)); ps_pic_timing->u4_au_cpb_removal_delay_minus1 = value; BITS_PARSE("pic_dpb_output_delay", value, ps_bitstrm, (ps_vui_hdr->u1_dpb_output_delay_length_minus1 + 1)); ps_pic_timing->u4_pic_dpb_output_delay = value; if(ps_vui_hdr->u1_sub_pic_cpb_params_present_flag) { BITS_PARSE("pic_dpb_output_du_delay", value, ps_bitstrm, (ps_vui_hdr->u1_dpb_output_delay_du_length_minus1 + 1)); ps_pic_timing->u4_pic_dpb_output_du_delay = value; } if(ps_vui_hdr->u1_sub_pic_cpb_params_present_flag && ps_vui_hdr->u1_sub_pic_cpb_params_in_pic_timing_sei_flag) { UWORD32 num_units_minus1; UWORD32 array_size; UEV_PARSE("num_decoding_units_minus1", value, ps_bitstrm); if(value > (ps_sps->i4_pic_size_in_ctb -1)) { return IHEVCD_INVALID_PARAMETER; } ps_pic_timing->u4_num_decoding_units_minus1 = value; num_units_minus1 = ps_pic_timing->u4_num_decoding_units_minus1; array_size = (sizeof(ps_pic_timing->au4_num_nalus_in_du_minus1) / sizeof(ps_pic_timing->au4_num_nalus_in_du_minus1[0])); num_units_minus1 = CLIP3(num_units_minus1, 0,(array_size - 1)); ps_pic_timing->u4_num_decoding_units_minus1 = num_units_minus1; BITS_PARSE("du_common_cpb_removal_delay_flag", value, ps_bitstrm, 1); ps_pic_timing->u1_du_common_cpb_removal_delay_flag = value; if(ps_pic_timing->u1_du_common_cpb_removal_delay_flag) { BITS_PARSE("du_common_cpb_removal_delay_increment_minus1", value, ps_bitstrm, (ps_vui_hdr->u1_du_cpb_removal_delay_increment_length_minus1 + 1)); ps_pic_timing->u4_du_common_cpb_removal_delay_increment_minus1 = value; } for(i = 0; i <= ps_pic_timing->u4_num_decoding_units_minus1; i++) { UEV_PARSE("num_nalus_in_du_minus1", value, ps_bitstrm); if(value > (ps_sps->i4_pic_size_in_ctb -1)) { return IHEVCD_INVALID_PARAMETER; } ps_pic_timing->au4_num_nalus_in_du_minus1[i] = value; if((!ps_pic_timing->u1_du_common_cpb_removal_delay_flag) && (i < ps_pic_timing->u4_num_decoding_units_minus1)) { BITS_PARSE("du_common_cpb_removal_delay_increment_minus1", value, ps_bitstrm, (ps_vui_hdr->u1_du_cpb_removal_delay_increment_length_minus1 + 1)); ps_pic_timing->au4_du_cpb_removal_delay_increment_minus1[i] = value; } } } } return (IHEVCD_ERROR_T)IHEVCD_SUCCESS; } IHEVCD_ERROR_T ihevcd_parse_time_code_sei(codec_t *ps_codec) { parse_ctxt_t *ps_parse = &ps_codec->s_parse; bitstrm_t *ps_bitstrm = &ps_parse->s_bitstrm; UWORD32 value; time_code_t *ps_time_code; WORD32 i; ps_parse->s_sei_params.i1_time_code_present_flag = 1; ps_time_code = &ps_parse->s_sei_params.s_time_code; BITS_PARSE("num_clock_ts", value, ps_bitstrm, 2); ps_time_code->u1_num_clock_ts = value; for(i = 0; i < ps_time_code->u1_num_clock_ts; i++) { BITS_PARSE("clock_timestamp_flag[i]", value, ps_bitstrm, 1); ps_time_code->au1_clock_timestamp_flag[i] = value; if(ps_time_code->au1_clock_timestamp_flag[i]) { BITS_PARSE("units_field_based_flag[i]", value, ps_bitstrm, 1); ps_time_code->au1_units_field_based_flag[i] = value; BITS_PARSE("counting_type[i]", value, ps_bitstrm, 5); ps_time_code->au1_counting_type[i] = value; BITS_PARSE("full_timestamp_flag[i]", value, ps_bitstrm, 1); ps_time_code->au1_full_timestamp_flag[i] = value; BITS_PARSE("discontinuity_flag[i]", value, ps_bitstrm, 1); ps_time_code->au1_discontinuity_flag[i] = value; BITS_PARSE("cnt_dropped_flag[i]", value, ps_bitstrm, 1); ps_time_code->au1_cnt_dropped_flag[i] = value; BITS_PARSE("n_frames[i]", value, ps_bitstrm, 9); ps_time_code->au2_n_frames[i] = value; if(ps_time_code->au1_full_timestamp_flag[i]) { BITS_PARSE("seconds_value[i]", value, ps_bitstrm, 6); ps_time_code->au1_seconds_value[i] = value; BITS_PARSE("minutes_value[i]", value, ps_bitstrm, 6); ps_time_code->au1_minutes_value[i] = value; BITS_PARSE("hours_value[i]", value, ps_bitstrm, 5); ps_time_code->au1_hours_value[i] = value; } else { BITS_PARSE("seconds_flag[i]", value, ps_bitstrm, 1); ps_time_code->au1_seconds_flag[i] = value; if(ps_time_code->au1_seconds_flag[i]) { BITS_PARSE("seconds_value[i]", value, ps_bitstrm, 6); ps_time_code->au1_seconds_value[i] = value; BITS_PARSE("minutes_flag[i]", value, ps_bitstrm, 1); ps_time_code->au1_minutes_flag[i] = value; if(ps_time_code->au1_minutes_flag[i]) { BITS_PARSE("minutes_value[i]", value, ps_bitstrm, 6); ps_time_code->au1_minutes_value[i] = value; BITS_PARSE("hours_flag[i]", value, ps_bitstrm, 1); ps_time_code->au1_hours_flag[i] = value; if(ps_time_code->au1_hours_flag[i]) { BITS_PARSE("hours_value[i]", value, ps_bitstrm, 5); ps_time_code->au1_hours_value[i] = value; } } } } BITS_PARSE("time_offset_length[i]", value, ps_bitstrm, 5); ps_time_code->au1_time_offset_length[i] = value; if(ps_time_code->au1_time_offset_length[i] > 0) { BITS_PARSE("time_offset_value[i]", value, ps_bitstrm, ps_time_code->au1_time_offset_length[i]); ps_time_code->au1_time_offset_value[i] = value; } else { ps_time_code->au1_time_offset_value[i] = 0; } } } return (IHEVCD_ERROR_T)IHEVCD_SUCCESS; } IHEVCD_ERROR_T ihevcd_parse_mastering_disp_params_sei(codec_t *ps_codec) { parse_ctxt_t *ps_parse = &ps_codec->s_parse; bitstrm_t *ps_bitstrm = &ps_parse->s_bitstrm; UWORD32 value; mastering_dis_col_vol_sei_params_t *ps_mastering_dis_col_vol; WORD32 i; ps_parse->s_sei_params.i4_sei_mastering_disp_colour_vol_params_present_flags = 1; ps_mastering_dis_col_vol = &ps_parse->s_sei_params.s_mastering_dis_col_vol_sei_params; for(i = 0; i < 3; i++) { BITS_PARSE("display_primaries_x[c]", value, ps_bitstrm, 16); ps_mastering_dis_col_vol->au2_display_primaries_x[i] = value; BITS_PARSE("display_primaries_y[c]", value, ps_bitstrm, 16); ps_mastering_dis_col_vol->au2_display_primaries_y[i] = value; } BITS_PARSE("white_point_x", value, ps_bitstrm, 16); ps_mastering_dis_col_vol->u2_white_point_x = value; BITS_PARSE("white_point_y", value, ps_bitstrm, 16); ps_mastering_dis_col_vol->u2_white_point_y = value; BITS_PARSE("max_display_mastering_luminance", value, ps_bitstrm, 32); ps_mastering_dis_col_vol->u4_max_display_mastering_luminance = value; BITS_PARSE("min_display_mastering_luminance", value, ps_bitstrm, 32); ps_mastering_dis_col_vol->u4_min_display_mastering_luminance = value; return (IHEVCD_ERROR_T)IHEVCD_SUCCESS; } IHEVCD_ERROR_T ihevcd_parse_user_data_registered_itu_t_t35(codec_t *ps_codec, UWORD32 u4_payload_size) { parse_ctxt_t *ps_parse = &ps_codec->s_parse; bitstrm_t *ps_bitstrm = &ps_parse->s_bitstrm; UWORD32 value; user_data_registered_itu_t_t35_t *ps_user_data_registered_itu_t_t35; UWORD32 i; UWORD32 j = 0; ps_parse->s_sei_params.i1_user_data_registered_present_flag = 1; ps_user_data_registered_itu_t_t35 = &ps_parse->s_sei_params.as_user_data_registered_itu_t_t35[ps_parse->s_sei_params.i4_sei_user_data_cnt]; ps_parse->s_sei_params.i4_sei_user_data_cnt++; ps_user_data_registered_itu_t_t35->i4_payload_size = u4_payload_size; if(u4_payload_size > MAX_USERDATA_PAYLOAD) { u4_payload_size = MAX_USERDATA_PAYLOAD; } ps_user_data_registered_itu_t_t35->i4_valid_payload_size = u4_payload_size; BITS_PARSE("itu_t_t35_country_code", value, ps_bitstrm, 8); ps_user_data_registered_itu_t_t35->u1_itu_t_t35_country_code = value; if(0xFF != ps_user_data_registered_itu_t_t35->u1_itu_t_t35_country_code) { i = 1; } else { BITS_PARSE("itu_t_t35_country_code_extension_byte", value, ps_bitstrm, 8); ps_user_data_registered_itu_t_t35->u1_itu_t_t35_country_code_extension_byte = value; i = 2; } do { BITS_PARSE("itu_t_t35_payload_byte", value, ps_bitstrm, 8); ps_user_data_registered_itu_t_t35->u1_itu_t_t35_payload_byte[j++] = value; i++; }while(i < u4_payload_size); return (IHEVCD_ERROR_T)IHEVCD_SUCCESS; } void ihevcd_parse_sei_payload(codec_t *ps_codec, UWORD32 u4_payload_type, UWORD32 u4_payload_size, WORD8 i1_nal_type) { parse_ctxt_t *ps_parse = &ps_codec->s_parse; bitstrm_t *ps_bitstrm = &ps_parse->s_bitstrm; WORD32 payload_bits_remaining = 0; sps_t *ps_sps; UWORD32 i; for(i = 0; i < MAX_SPS_CNT; i++) { ps_sps = ps_codec->ps_sps_base + i; if(ps_sps->i1_sps_valid) { break; } } if(!ps_sps->i1_sps_valid) { return; } if(NAL_PREFIX_SEI == i1_nal_type) { switch(u4_payload_type) { case SEI_BUFFERING_PERIOD: ps_parse->s_sei_params.i1_sei_parameters_present_flag = 1; ihevcd_parse_buffering_period_sei(ps_codec, ps_sps); break; case SEI_PICTURE_TIMING: ps_parse->s_sei_params.i1_sei_parameters_present_flag = 1; ihevcd_parse_pic_timing_sei(ps_codec, ps_sps); break; case SEI_TIME_CODE: ps_parse->s_sei_params.i1_sei_parameters_present_flag = 1; ihevcd_parse_time_code_sei(ps_codec); break; case SEI_MASTERING_DISPLAY_COLOUR_VOLUME: ps_parse->s_sei_params.i4_sei_mastering_disp_colour_vol_params_present_flags = 1; ihevcd_parse_mastering_disp_params_sei(ps_codec); break; case SEI_USER_DATA_REGISTERED_ITU_T_T35: ps_parse->s_sei_params.i1_sei_parameters_present_flag = 1; if(ps_parse->s_sei_params.i4_sei_user_data_cnt >= USER_DATA_MAX) { for(i = 0; i < u4_payload_size / 4; i++) { ihevcd_bits_flush(ps_bitstrm, 4 * 8); } ihevcd_bits_flush(ps_bitstrm, (u4_payload_size - i * 4) * 8); } else { ihevcd_parse_user_data_registered_itu_t_t35(ps_codec, u4_payload_size); } break; default: for(i = 0; i < u4_payload_size; i++) { ihevcd_bits_flush(ps_bitstrm, 8); } break; } } else /* NAL_SUFFIX_SEI */ { switch(u4_payload_type) { case SEI_USER_DATA_REGISTERED_ITU_T_T35: ps_parse->s_sei_params.i1_sei_parameters_present_flag = 1; if(ps_parse->s_sei_params.i4_sei_user_data_cnt >= USER_DATA_MAX) { for(i = 0; i < u4_payload_size / 4; i++) { ihevcd_bits_flush(ps_bitstrm, 4 * 8); } ihevcd_bits_flush(ps_bitstrm, (u4_payload_size - i * 4) * 8); } else { ihevcd_parse_user_data_registered_itu_t_t35(ps_codec, u4_payload_size); } break; default: for(i = 0; i < u4_payload_size; i++) { ihevcd_bits_flush(ps_bitstrm, 8); } break; } } /** * By definition the underlying bitstream terminates in a byte-aligned manner. * 1. Extract all bar the last MIN(bitsremaining,nine) bits as reserved_payload_extension_data * 2. Examine the final 8 bits to determine the payload_bit_equal_to_one marker * 3. Extract the remainingreserved_payload_extension_data bits. * * If there are fewer than 9 bits available, extract them. */ payload_bits_remaining = ihevcd_bits_num_bits_remaining(ps_bitstrm); if(payload_bits_remaining) /* more_data_in_payload() */ { WORD32 final_bits; WORD32 final_payload_bits = 0; WORD32 mask = 0xFF; UWORD32 u4_dummy; UWORD32 u4_reserved_payload_extension_data; UNUSED(u4_dummy); UNUSED(u4_reserved_payload_extension_data); while(payload_bits_remaining > 9) { BITS_PARSE("reserved_payload_extension_data", u4_reserved_payload_extension_data, ps_bitstrm, 1); payload_bits_remaining--; } final_bits = ihevcd_bits_nxt(ps_bitstrm, payload_bits_remaining); while(final_bits & (mask >> final_payload_bits)) { final_payload_bits++; continue; } while(payload_bits_remaining > (9 - final_payload_bits)) { BITS_PARSE("reserved_payload_extension_data", u4_reserved_payload_extension_data, ps_bitstrm, 1); payload_bits_remaining--; } BITS_PARSE("payload_bit_equal_to_one", u4_dummy, ps_bitstrm, 1); payload_bits_remaining--; while(payload_bits_remaining) { BITS_PARSE("payload_bit_equal_to_zero", u4_dummy, ps_bitstrm, 1); payload_bits_remaining--; } } return; } IHEVCD_ERROR_T ihevcd_read_rbsp_trailing_bits(codec_t *ps_codec, UWORD32 u4_bits_left) { parse_ctxt_t *ps_parse = &ps_codec->s_parse; UWORD32 value; WORD32 cnt = 0; BITS_PARSE("rbsp_stop_one_bit", value, &ps_parse->s_bitstrm, 1); u4_bits_left--; if(value != 1) { return (IHEVCD_ERROR_T)IHEVCD_FAIL; } while(u4_bits_left) { BITS_PARSE("rbsp_alignment_zero_bit", value, &ps_parse->s_bitstrm, 1); u4_bits_left--; cnt++; } ASSERT(cnt < 8); return (IHEVCD_ERROR_T)IHEVCD_SUCCESS; } /** ******************************************************************************* * * @brief * Parses SEI (Supplemental Enhancement Information) * * @par Description: * Parses SEI (Supplemental Enhancement Information) as per Section: 7.3.7 * * @param[in] ps_codec * Pointer to codec context * * @returns Error code from IHEVCD_ERROR_T * * @remarks * * ******************************************************************************* */ IHEVCD_ERROR_T ihevcd_parse_sei(codec_t *ps_codec, nal_header_t *ps_nal) { IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS; parse_ctxt_t *ps_parse = &ps_codec->s_parse; UWORD32 u4_payload_type = 0, u4_last_payload_type_byte = 0; UWORD32 u4_payload_size = 0, u4_last_payload_size_byte = 0; UWORD32 value; bitstrm_t *ps_bitstrm = &ps_parse->s_bitstrm; UWORD32 u4_bits_left; u4_bits_left = ihevcd_bits_num_bits_remaining(ps_bitstrm); while(u4_bits_left > 8) { while(ihevcd_bits_nxt(ps_bitstrm, 8) == 0xFF) { ihevcd_bits_flush(ps_bitstrm, 8); /* equal to 0xFF */ u4_payload_type += 255; } BITS_PARSE("last_payload_type_byte", value, ps_bitstrm, 8); u4_last_payload_type_byte = value; u4_payload_type += u4_last_payload_type_byte; while(ihevcd_bits_nxt(ps_bitstrm, 8) == 0xFF) { ihevcd_bits_flush(ps_bitstrm, 8); /* equal to 0xFF */ u4_payload_size += 255; } BITS_PARSE("last_payload_size_byte", value, ps_bitstrm, 8); u4_last_payload_size_byte = value; u4_payload_size += u4_last_payload_size_byte; u4_bits_left = ihevcd_bits_num_bits_remaining(ps_bitstrm); u4_payload_size = MIN(u4_payload_size, u4_bits_left / 8); ihevcd_parse_sei_payload(ps_codec, u4_payload_type, u4_payload_size, ps_nal->i1_nal_unit_type); /* Calculate the bits left in the current payload */ u4_bits_left = ihevcd_bits_num_bits_remaining(ps_bitstrm); } // read rbsp_trailing_bits if(u4_bits_left) { ihevcd_read_rbsp_trailing_bits(ps_codec, u4_bits_left); } return ret; } /** ******************************************************************************* * * @brief * Parses Access unit delimiter * * @par Description: * Parses Access unit delimiter as per section Section: 7.3.2.5 * * @param[in] ps_codec * Pointer to codec context * * @returns Error code from IHEVCD_ERROR_T * * @remarks * * ******************************************************************************* */ WORD32 ihevcd_parse_aud(codec_t *ps_codec) { IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS; UNUSED(ps_codec); return ret; } WORD32 ihevcd_extend_sign_bit(WORD32 value, WORD32 num_bits) { WORD32 ret_value = value; if(value >> (num_bits - 1)) { ret_value |= (0xFFFFFFFF << num_bits); } return ret_value; } /** ******************************************************************************* * * @brief * Calculate POC of the current slice * * @par Description: * Calculates the current POC using the previous POC lsb and previous POC msb * * @param[in] ps_codec * Pointer to codec context * * @param[in] i1_pic_order_cnt_lsb * Current POC lsb * * @returns Current absolute POC * * @remarks * * ******************************************************************************* */ WORD32 ihevcd_calc_poc(codec_t *ps_codec, nal_header_t *ps_nal, WORD8 i1_log2_max_poc_lsb, WORD32 i2_poc_lsb) { WORD32 i4_abs_poc, i4_poc_msb; WORD32 max_poc_lsb; WORD8 i1_nal_unit_type = ps_nal->i1_nal_unit_type; max_poc_lsb = (1 << i1_log2_max_poc_lsb); if((!ps_codec->i4_first_pic_done) && (!ps_codec->i4_pic_present)) ps_codec->i4_prev_poc_msb = -2 * max_poc_lsb; if(NAL_IDR_N_LP == i1_nal_unit_type || NAL_IDR_W_LP == i1_nal_unit_type || NAL_BLA_N_LP == i1_nal_unit_type || NAL_BLA_W_DLP == i1_nal_unit_type || NAL_BLA_W_LP == i1_nal_unit_type || (NAL_CRA == i1_nal_unit_type && !ps_codec->i4_first_pic_done)) { i4_poc_msb = ps_codec->i4_prev_poc_msb + 2 * max_poc_lsb; ps_codec->i4_prev_poc_lsb = 0; ps_codec->i4_max_prev_poc_lsb = 0; // ps_codec->i4_prev_poc_msb = 0; } else { if((i2_poc_lsb < ps_codec->i4_prev_poc_lsb) && ((ps_codec->i4_prev_poc_lsb - i2_poc_lsb) >= max_poc_lsb / 2)) { i4_poc_msb = ps_codec->i4_prev_poc_msb + max_poc_lsb; } else if((i2_poc_lsb > ps_codec->i4_prev_poc_lsb) && ((i2_poc_lsb - ps_codec->i4_prev_poc_lsb) > max_poc_lsb / 2)) { i4_poc_msb = ps_codec->i4_prev_poc_msb - max_poc_lsb; } else { i4_poc_msb = ps_codec->i4_prev_poc_msb; } } i4_abs_poc = i4_poc_msb + i2_poc_lsb; ps_codec->i4_max_prev_poc_lsb = MAX(ps_codec->i4_max_prev_poc_lsb, i2_poc_lsb); { WORD32 is_reference_nal = ((i1_nal_unit_type <= NAL_RSV_VCL_R15) && (i1_nal_unit_type % 2 != 0)) || ((i1_nal_unit_type >= NAL_BLA_W_LP) && (i1_nal_unit_type <= NAL_RSV_RAP_VCL23)); WORD32 update_prev_poc = ((is_reference_nal) && ((i1_nal_unit_type < NAL_RADL_N) || (i1_nal_unit_type > NAL_RASL_R))); if((0 == ps_nal->i1_nuh_temporal_id) && (update_prev_poc)) { ps_codec->i4_prev_poc_lsb = i2_poc_lsb; ps_codec->i4_prev_poc_msb = i4_poc_msb; } } return i4_abs_poc; } void ihevcd_copy_slice_hdr(codec_t *ps_codec, WORD32 slice_idx, WORD32 slice_idx_ref) { slice_header_t *ps_slice_hdr, *ps_slice_hdr_ref; WORD32 *pu4_entry_offset_backup; ps_slice_hdr = ps_codec->s_parse.ps_slice_hdr_base + slice_idx; ps_slice_hdr_ref = ps_codec->s_parse.ps_slice_hdr_base + slice_idx_ref; pu4_entry_offset_backup = ps_slice_hdr->pu4_entry_point_offset; memcpy(ps_slice_hdr, ps_slice_hdr_ref, sizeof(slice_header_t)); ps_slice_hdr->pu4_entry_point_offset = pu4_entry_offset_backup; }