| /****************************************************************************** |
| * |
| * 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 <stdio.h> |
| #include <stddef.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <assert.h> |
| |
| #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_parse_slice_header.h" |
| #include "ihevcd_ref_list.h" |
| |
| mv_buf_t* ihevcd_mv_mgr_get_poc(buf_mgr_t *ps_mv_buf_mgr, UWORD32 abs_poc); |
| |
| /** |
| ******************************************************************************* |
| * |
| * @brief |
| * Parses VPS operation point |
| * |
| * @par Description |
| * Parses VPS operation point as per section 7.3.5 |
| * |
| * @param[out] ps_vps |
| * Pointer to VPS structure |
| * |
| * @param[in] ps_bitstrm |
| * Pointer to bitstream structure |
| * |
| * @param[in] ops_idx |
| * Operating point index |
| * |
| * @returns Error code from IHEVCD_ERROR_T |
| * |
| * @remarks |
| * |
| ******************************************************************************* |
| */ |
| IHEVCD_ERROR_T ihevcd_operation_point_set(vps_t *ps_vps, bitstrm_t *ps_bitstrm, WORD32 ops_idx) |
| { |
| WORD32 i; |
| WORD32 value; |
| |
| IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS; |
| UNUSED(ops_idx); |
| for(i = 0; i <= ps_vps->i1_vps_max_nuh_reserved_zero_layer_id; i++) |
| { |
| BITS_PARSE("list_entry_l0[ i ]", value, ps_bitstrm, 1); |
| //ps_vps->ai1_layer_id_included_flag[ops_idx][i] = value; |
| |
| } |
| UNUSED(value); |
| |
| return ret; |
| } |
| |
| /** |
| ******************************************************************************* |
| * |
| * @brief |
| * Parses pic_lismod_t (picture list mod syntax) Section:7.3.8.3 Reference |
| * picture list mod syntax |
| * |
| * @par Description: |
| * Parse pict list mod synt and update pic_lismod_t struct |
| * |
| * @param[in] ps_codec |
| * Pointer to codec context |
| * |
| * @returns Error code from IHEVCD_ERROR_T |
| * |
| * @remarks |
| * |
| * |
| ******************************************************************************* |
| */ |
| |
| WORD32 ihevcd_ref_pic_list_modification(bitstrm_t *ps_bitstrm, |
| slice_header_t *ps_slice_hdr, |
| WORD32 num_poc_total_curr) |
| { |
| WORD32 ret = IHEVCD_SUCCESS; |
| WORD32 value; |
| WORD32 i; |
| rplm_t *ps_rplm; |
| WORD32 num_bits_list_entry; |
| |
| ps_rplm = &(ps_slice_hdr->s_rplm); |
| |
| /* Calculate Ceil(Log2(num_poc_total_curr)) */ |
| { |
| num_bits_list_entry = 32 - CLZ(num_poc_total_curr); |
| /* Check if num_poc_total_curr is power of 2 */ |
| if(0 == (num_poc_total_curr & (num_poc_total_curr - 1))) |
| { |
| num_bits_list_entry--; |
| } |
| } |
| |
| if(ps_slice_hdr->i1_slice_type == PSLICE || ps_slice_hdr->i1_slice_type == BSLICE) |
| { |
| BITS_PARSE("ref_pic_list_modification_flag_l0", value, ps_bitstrm, 1); |
| ps_rplm->i1_ref_pic_list_modification_flag_l0 = value; |
| |
| if(ps_rplm->i1_ref_pic_list_modification_flag_l0) |
| for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l0_active; i++) |
| { |
| BITS_PARSE("list_entry_l0", value, ps_bitstrm, num_bits_list_entry); |
| ps_rplm->i1_list_entry_l0[i] = value; |
| |
| ps_rplm->i1_list_entry_l0[i] = CLIP3(ps_rplm->i1_list_entry_l0[i], 0, num_poc_total_curr - 1); |
| } |
| } |
| |
| if(ps_slice_hdr->i1_slice_type == BSLICE) |
| { |
| BITS_PARSE("ref_pic_list_modification_flag_l1", value, ps_bitstrm, 1); |
| ps_rplm->i1_ref_pic_list_modification_flag_l1 = value; |
| |
| if(ps_rplm->i1_ref_pic_list_modification_flag_l1) |
| for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l1_active; i++) |
| { |
| BITS_PARSE("list_entry_l1", value, ps_bitstrm, num_bits_list_entry); |
| ps_rplm->i1_list_entry_l1[i] = value; |
| |
| ps_rplm->i1_list_entry_l1[i] = CLIP3(ps_rplm->i1_list_entry_l1[i], 0, num_poc_total_curr - 1); |
| } |
| |
| } |
| |
| return ret; |
| } |
| |
| /** |
| ******************************************************************************* |
| * |
| * @brief |
| * Parse Slice Header |
| * slice_header_syntax() |
| * |
| * @par Description: |
| * Parse Slice Header as per Section: 7.3.8 |
| * |
| * @param[in] ps_codec |
| * Pointer to codec context |
| * |
| * @returns Error code from IHEVCD_ERROR_T |
| * |
| * @remarks |
| * |
| * |
| ******************************************************************************* |
| */ |
| |
| IHEVCD_ERROR_T ihevcd_parse_slice_header(codec_t *ps_codec, |
| nal_header_t *ps_nal) |
| { |
| IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS; |
| WORD32 value; |
| WORD32 i, j; |
| WORD32 sps_id; |
| |
| pps_t *ps_pps; |
| sps_t *ps_sps; |
| slice_header_t *ps_slice_hdr; |
| WORD32 disable_deblocking_filter_flag; |
| bitstrm_t *ps_bitstrm = &ps_codec->s_parse.s_bitstrm; |
| WORD32 idr_pic_flag; |
| WORD32 pps_id; |
| WORD32 first_slice_in_pic_flag; |
| WORD32 no_output_of_prior_pics_flag = 0; |
| WORD8 i1_nal_unit_type = ps_nal->i1_nal_unit_type; |
| WORD32 num_poc_total_curr = 0; |
| WORD32 slice_address; |
| |
| if(ps_codec->i4_slice_error == 1) |
| return ret; |
| |
| idr_pic_flag = (NAL_IDR_W_LP == i1_nal_unit_type) || |
| (NAL_IDR_N_LP == i1_nal_unit_type); |
| |
| |
| BITS_PARSE("first_slice_in_pic_flag", first_slice_in_pic_flag, ps_bitstrm, 1); |
| if((NAL_BLA_W_LP <= i1_nal_unit_type) && |
| (NAL_RSV_RAP_VCL23 >= i1_nal_unit_type)) |
| { |
| BITS_PARSE("no_output_of_prior_pics_flag", no_output_of_prior_pics_flag, ps_bitstrm, 1); |
| } |
| UEV_PARSE("pic_parameter_set_id", pps_id, ps_bitstrm); |
| pps_id = CLIP3(pps_id, 0, MAX_PPS_CNT - 2); |
| |
| /* Get the current PPS structure */ |
| ps_pps = ps_codec->s_parse.ps_pps_base + pps_id; |
| if(0 == ps_pps->i1_pps_valid) |
| { |
| pps_t *ps_pps_ref = ps_codec->ps_pps_base; |
| while(0 == ps_pps_ref->i1_pps_valid) |
| ps_pps_ref++; |
| |
| if((ps_pps_ref - ps_codec->ps_pps_base >= MAX_PPS_CNT - 1)) |
| return IHEVCD_INVALID_HEADER; |
| |
| ihevcd_copy_pps(ps_codec, pps_id, ps_pps_ref->i1_pps_id); |
| } |
| |
| /* Get SPS id for the current PPS */ |
| sps_id = ps_pps->i1_sps_id; |
| |
| /* Get the current SPS structure */ |
| ps_sps = ps_codec->s_parse.ps_sps_base + sps_id; |
| |
| /* When the current slice is the first in a pic, |
| * check whether the previous frame is complete |
| * If the previous frame is incomplete - |
| * treat the remaining CTBs as skip */ |
| if((0 != ps_codec->u4_pic_cnt || ps_codec->i4_pic_present) && |
| first_slice_in_pic_flag) |
| { |
| if(ps_codec->i4_pic_present) |
| { |
| slice_header_t *ps_slice_hdr_next; |
| ps_codec->i4_slice_error = 1; |
| ps_codec->s_parse.i4_cur_slice_idx--; |
| if(ps_codec->s_parse.i4_cur_slice_idx < 0) |
| ps_codec->s_parse.i4_cur_slice_idx = 0; |
| |
| ps_slice_hdr_next = ps_codec->s_parse.ps_slice_hdr_base + ((ps_codec->s_parse.i4_cur_slice_idx + 1) & (MAX_SLICE_HDR_CNT - 1)); |
| ps_slice_hdr_next->i2_ctb_x = 0; |
| ps_slice_hdr_next->i2_ctb_y = ps_codec->s_parse.ps_sps->i2_pic_ht_in_ctb; |
| return ret; |
| } |
| else |
| { |
| ps_codec->i4_slice_error = 0; |
| } |
| } |
| |
| if(first_slice_in_pic_flag) |
| { |
| ps_codec->s_parse.i4_cur_slice_idx = 0; |
| } |
| else |
| { |
| /* If the current slice is not the first slice in the pic, |
| * but the first one to be parsed, set the current slice indx to 1 |
| * Treat the first slice to be missing and copy the current slice header |
| * to the first one */ |
| if(0 == ps_codec->i4_pic_present) |
| ps_codec->s_parse.i4_cur_slice_idx = 1; |
| } |
| |
| ps_slice_hdr = ps_codec->s_parse.ps_slice_hdr_base + (ps_codec->s_parse.i4_cur_slice_idx & (MAX_SLICE_HDR_CNT - 1)); |
| |
| |
| if((ps_pps->i1_dependent_slice_enabled_flag) && |
| (!first_slice_in_pic_flag)) |
| { |
| BITS_PARSE("dependent_slice_flag", value, ps_bitstrm, 1); |
| |
| /* If dependendent slice, copy slice header from previous slice */ |
| if(value && (ps_codec->s_parse.i4_cur_slice_idx > 0)) |
| { |
| ihevcd_copy_slice_hdr(ps_codec, |
| (ps_codec->s_parse.i4_cur_slice_idx & (MAX_SLICE_HDR_CNT - 1)), |
| ((ps_codec->s_parse.i4_cur_slice_idx - 1) & (MAX_SLICE_HDR_CNT - 1))); |
| } |
| ps_slice_hdr->i1_dependent_slice_flag = value; |
| } |
| else |
| { |
| ps_slice_hdr->i1_dependent_slice_flag = 0; |
| } |
| ps_slice_hdr->i1_nal_unit_type = i1_nal_unit_type; |
| ps_slice_hdr->i1_pps_id = pps_id; |
| ps_slice_hdr->i1_first_slice_in_pic_flag = first_slice_in_pic_flag; |
| |
| ps_slice_hdr->i1_no_output_of_prior_pics_flag = 1; |
| if((NAL_BLA_W_LP <= i1_nal_unit_type) && |
| (NAL_RSV_RAP_VCL23 >= i1_nal_unit_type)) |
| { |
| ps_slice_hdr->i1_no_output_of_prior_pics_flag = no_output_of_prior_pics_flag; |
| } |
| ps_slice_hdr->i1_pps_id = pps_id; |
| |
| if(!ps_slice_hdr->i1_first_slice_in_pic_flag) |
| { |
| WORD32 num_bits; |
| |
| /* Use CLZ to compute Ceil( Log2( PicSizeInCtbsY ) ) */ |
| num_bits = 32 - CLZ(ps_sps->i4_pic_size_in_ctb - 1); |
| BITS_PARSE("slice_address", value, ps_bitstrm, num_bits); |
| |
| slice_address = value; |
| /* If slice address is greater than the number of CTBs in a picture, |
| * ignore the slice */ |
| if(value >= ps_sps->i4_pic_size_in_ctb) |
| return IHEVCD_IGNORE_SLICE; |
| } |
| else |
| { |
| slice_address = 0; |
| } |
| |
| if(!ps_slice_hdr->i1_dependent_slice_flag) |
| { |
| ps_slice_hdr->i1_pic_output_flag = 1; |
| ps_slice_hdr->i4_pic_order_cnt_lsb = 0; |
| ps_slice_hdr->i1_num_long_term_sps = 0; |
| ps_slice_hdr->i1_num_long_term_pics = 0; |
| |
| for(i = 0; i < ps_pps->i1_num_extra_slice_header_bits; i++) |
| { |
| BITS_PARSE("slice_reserved_undetermined_flag[ i ]", value, ps_bitstrm, 1); |
| //slice_reserved_undetermined_flag[ i ] |
| } |
| UEV_PARSE("slice_type", value, ps_bitstrm); |
| ps_slice_hdr->i1_slice_type = value; |
| |
| /* If the picture is IRAP, slice type must be equal to ISLICE */ |
| if((ps_slice_hdr->i1_nal_unit_type >= NAL_BLA_W_LP) && |
| (ps_slice_hdr->i1_nal_unit_type <= NAL_RSV_RAP_VCL23)) |
| ps_slice_hdr->i1_slice_type = ISLICE; |
| |
| if((ps_slice_hdr->i1_slice_type < 0) || |
| (ps_slice_hdr->i1_slice_type > 2)) |
| return IHEVCD_IGNORE_SLICE; |
| |
| if(ps_pps->i1_output_flag_present_flag) |
| { |
| BITS_PARSE("pic_output_flag", value, ps_bitstrm, 1); |
| ps_slice_hdr->i1_pic_output_flag = value; |
| } |
| ps_slice_hdr->i1_colour_plane_id = 0; |
| if(1 == ps_sps->i1_separate_colour_plane_flag) |
| { |
| BITS_PARSE("colour_plane_id", value, ps_bitstrm, 2); |
| ps_slice_hdr->i1_colour_plane_id = value; |
| } |
| ps_slice_hdr->i1_slice_temporal_mvp_enable_flag = 0; |
| |
| if(!idr_pic_flag) |
| { |
| |
| WORD32 st_rps_idx; |
| WORD32 num_neg_pics; |
| WORD32 num_pos_pics; |
| WORD8 *pi1_used; |
| |
| BITS_PARSE("pic_order_cnt_lsb", value, ps_bitstrm, ps_sps->i1_log2_max_pic_order_cnt_lsb); |
| //value = ihevcd_extend_sign_bit(value, ps_sps->i1_log2_max_pic_order_cnt_lsb); |
| ps_slice_hdr->i4_pic_order_cnt_lsb = value; |
| |
| BITS_PARSE("short_term_ref_pic_set_sps_flag", value, ps_bitstrm, 1); |
| ps_slice_hdr->i1_short_term_ref_pic_set_sps_flag = value; |
| |
| if(1 == ps_slice_hdr->i1_short_term_ref_pic_set_sps_flag) |
| { |
| WORD32 numbits; |
| |
| ps_slice_hdr->i1_short_term_ref_pic_set_idx = 0; |
| if(ps_sps->i1_num_short_term_ref_pic_sets > 1) |
| { |
| numbits = 32 - CLZ(ps_sps->i1_num_short_term_ref_pic_sets - 1); |
| BITS_PARSE("short_term_ref_pic_set_idx", value, ps_bitstrm, numbits); |
| ps_slice_hdr->i1_short_term_ref_pic_set_idx = value; |
| } |
| |
| st_rps_idx = ps_slice_hdr->i1_short_term_ref_pic_set_idx; |
| num_neg_pics = ps_sps->as_stref_picset[st_rps_idx].i1_num_neg_pics; |
| num_pos_pics = ps_sps->as_stref_picset[st_rps_idx].i1_num_pos_pics; |
| pi1_used = ps_sps->as_stref_picset[st_rps_idx].ai1_used; |
| } |
| else |
| { |
| ihevcd_short_term_ref_pic_set(ps_bitstrm, |
| &ps_sps->as_stref_picset[0], |
| ps_sps->i1_num_short_term_ref_pic_sets, |
| ps_sps->i1_num_short_term_ref_pic_sets, |
| &ps_slice_hdr->s_stref_picset); |
| |
| st_rps_idx = ps_sps->i1_num_short_term_ref_pic_sets; |
| num_neg_pics = ps_slice_hdr->s_stref_picset.i1_num_neg_pics; |
| num_pos_pics = ps_slice_hdr->s_stref_picset.i1_num_pos_pics; |
| pi1_used = ps_slice_hdr->s_stref_picset.ai1_used; |
| } |
| |
| if(ps_sps->i1_long_term_ref_pics_present_flag) |
| { |
| if(ps_sps->i1_num_long_term_ref_pics_sps > 0) |
| { |
| UEV_PARSE("num_long_term_sps", value, ps_bitstrm); |
| ps_slice_hdr->i1_num_long_term_sps = value; |
| |
| ps_slice_hdr->i1_num_long_term_sps = CLIP3(ps_slice_hdr->i1_num_long_term_sps, |
| 0, MAX_DPB_SIZE - num_neg_pics - num_pos_pics); |
| } |
| UEV_PARSE("num_long_term_pics", value, ps_bitstrm); |
| ps_slice_hdr->i1_num_long_term_pics = value; |
| ps_slice_hdr->i1_num_long_term_pics = CLIP3(ps_slice_hdr->i1_num_long_term_pics, |
| 0, MAX_DPB_SIZE - num_neg_pics - num_pos_pics - |
| ps_slice_hdr->i1_num_long_term_sps); |
| |
| for(i = 0; i < (ps_slice_hdr->i1_num_long_term_sps + |
| ps_slice_hdr->i1_num_long_term_pics); i++) |
| { |
| if(i < ps_slice_hdr->i1_num_long_term_sps) |
| { |
| /* Use CLZ to compute Ceil( Log2( num_long_term_ref_pics_sps ) ) */ |
| WORD32 num_bits = 32 - CLZ(ps_sps->i1_num_long_term_ref_pics_sps); |
| BITS_PARSE("lt_idx_sps[ i ]", value, ps_bitstrm, num_bits); |
| ps_slice_hdr->ai4_poc_lsb_lt[i] = ps_sps->ai1_lt_ref_pic_poc_lsb_sps[value]; |
| ps_slice_hdr->ai1_used_by_curr_pic_lt_flag[i] = ps_sps->ai1_used_by_curr_pic_lt_sps_flag[value]; |
| |
| } |
| else |
| { |
| BITS_PARSE("poc_lsb_lt[ i ]", value, ps_bitstrm, ps_sps->i1_log2_max_pic_order_cnt_lsb); |
| ps_slice_hdr->ai4_poc_lsb_lt[i] = value; |
| |
| BITS_PARSE("used_by_curr_pic_lt_flag[ i ]", value, ps_bitstrm, 1); |
| ps_slice_hdr->ai1_used_by_curr_pic_lt_flag[i] = value; |
| |
| } |
| BITS_PARSE("delta_poc_msb_present_flag[ i ]", value, ps_bitstrm, 1); |
| ps_slice_hdr->ai1_delta_poc_msb_present_flag[i] = value; |
| |
| |
| ps_slice_hdr->ai1_delta_poc_msb_cycle_lt[i] = 0; |
| if(ps_slice_hdr->ai1_delta_poc_msb_present_flag[i]) |
| { |
| |
| UEV_PARSE("delata_poc_msb_cycle_lt[ i ]", value, ps_bitstrm); |
| ps_slice_hdr->ai1_delta_poc_msb_cycle_lt[i] = value; |
| } |
| |
| if((i != 0) && (i != ps_slice_hdr->i1_num_long_term_sps)) |
| { |
| ps_slice_hdr->ai1_delta_poc_msb_cycle_lt[i] += ps_slice_hdr->ai1_delta_poc_msb_cycle_lt[i - 1]; |
| } |
| |
| } |
| } |
| |
| for(i = 0; i < num_neg_pics + num_pos_pics; i++) |
| { |
| if(pi1_used[i]) |
| { |
| num_poc_total_curr++; |
| } |
| } |
| for(i = 0; i < ps_slice_hdr->i1_num_long_term_sps + ps_slice_hdr->i1_num_long_term_pics; i++) |
| { |
| if(ps_slice_hdr->ai1_used_by_curr_pic_lt_flag[i]) |
| { |
| num_poc_total_curr++; |
| } |
| } |
| |
| |
| if(ps_sps->i1_sps_temporal_mvp_enable_flag) |
| { |
| BITS_PARSE("enable_temporal_mvp_flag", value, ps_bitstrm, 1); |
| ps_slice_hdr->i1_slice_temporal_mvp_enable_flag = value; |
| } |
| |
| } |
| ps_slice_hdr->i1_slice_sao_luma_flag = 0; |
| ps_slice_hdr->i1_slice_sao_chroma_flag = 0; |
| if(ps_sps->i1_sample_adaptive_offset_enabled_flag) |
| { |
| BITS_PARSE("slice_sao_luma_flag", value, ps_bitstrm, 1); |
| ps_slice_hdr->i1_slice_sao_luma_flag = value; |
| |
| BITS_PARSE("slice_sao_chroma_flag", value, ps_bitstrm, 1); |
| ps_slice_hdr->i1_slice_sao_chroma_flag = value; |
| |
| } |
| |
| ps_slice_hdr->i1_max_num_merge_cand = 1; |
| ps_slice_hdr->i1_cabac_init_flag = 0; |
| |
| ps_slice_hdr->i1_num_ref_idx_l0_active = 0; |
| ps_slice_hdr->i1_num_ref_idx_l1_active = 0; |
| ps_slice_hdr->i1_slice_cb_qp_offset = 0; |
| ps_slice_hdr->i1_slice_cr_qp_offset = 0; |
| if((PSLICE == ps_slice_hdr->i1_slice_type) || |
| (BSLICE == ps_slice_hdr->i1_slice_type)) |
| { |
| BITS_PARSE("num_ref_idx_active_override_flag", value, ps_bitstrm, 1); |
| ps_slice_hdr->i1_num_ref_idx_active_override_flag = value; |
| |
| if(ps_slice_hdr->i1_num_ref_idx_active_override_flag) |
| { |
| UEV_PARSE("num_ref_idx_l0_active_minus1", value, ps_bitstrm); |
| ps_slice_hdr->i1_num_ref_idx_l0_active = value + 1; |
| |
| if(BSLICE == ps_slice_hdr->i1_slice_type) |
| { |
| UEV_PARSE("num_ref_idx_l1_active_minus1", value, ps_bitstrm); |
| ps_slice_hdr->i1_num_ref_idx_l1_active = value + 1; |
| } |
| |
| } |
| else |
| { |
| ps_slice_hdr->i1_num_ref_idx_l0_active = ps_pps->i1_num_ref_idx_l0_default_active; |
| |
| if(BSLICE == ps_slice_hdr->i1_slice_type) |
| { |
| ps_slice_hdr->i1_num_ref_idx_l1_active = ps_pps->i1_num_ref_idx_l1_default_active; |
| } |
| } |
| |
| ps_slice_hdr->i1_num_ref_idx_l0_active = CLIP3(ps_slice_hdr->i1_num_ref_idx_l0_active, 0, MAX_DPB_SIZE - 1); |
| ps_slice_hdr->i1_num_ref_idx_l1_active = CLIP3(ps_slice_hdr->i1_num_ref_idx_l1_active, 0, MAX_DPB_SIZE - 1); |
| |
| if(0 == num_poc_total_curr) |
| return IHEVCD_IGNORE_SLICE; |
| if((ps_pps->i1_lists_modification_present_flag) && (num_poc_total_curr > 1)) |
| { |
| ihevcd_ref_pic_list_modification(ps_bitstrm, |
| ps_slice_hdr, num_poc_total_curr); |
| } |
| else |
| { |
| ps_slice_hdr->s_rplm.i1_ref_pic_list_modification_flag_l0 = 0; |
| ps_slice_hdr->s_rplm.i1_ref_pic_list_modification_flag_l1 = 0; |
| } |
| |
| if(BSLICE == ps_slice_hdr->i1_slice_type) |
| { |
| BITS_PARSE("mvd_l1_zero_flag", value, ps_bitstrm, 1); |
| ps_slice_hdr->i1_mvd_l1_zero_flag = value; |
| } |
| |
| ps_slice_hdr->i1_cabac_init_flag = 0; |
| if(ps_pps->i1_cabac_init_present_flag) |
| { |
| BITS_PARSE("cabac_init_flag", value, ps_bitstrm, 1); |
| ps_slice_hdr->i1_cabac_init_flag = value; |
| |
| } |
| ps_slice_hdr->i1_collocated_from_l0_flag = 1; |
| ps_slice_hdr->i1_collocated_ref_idx = 0; |
| if(ps_slice_hdr->i1_slice_temporal_mvp_enable_flag) |
| { |
| if(BSLICE == ps_slice_hdr->i1_slice_type) |
| { |
| BITS_PARSE("collocated_from_l0_flag", value, ps_bitstrm, 1); |
| ps_slice_hdr->i1_collocated_from_l0_flag = value; |
| } |
| |
| if((ps_slice_hdr->i1_collocated_from_l0_flag && (ps_slice_hdr->i1_num_ref_idx_l0_active > 1)) || |
| (!ps_slice_hdr->i1_collocated_from_l0_flag && (ps_slice_hdr->i1_num_ref_idx_l1_active > 1))) |
| { |
| UEV_PARSE("collocated_ref_idx", value, ps_bitstrm); |
| ps_slice_hdr->i1_collocated_ref_idx = value; |
| } |
| |
| } |
| ps_slice_hdr->i1_collocated_ref_idx = CLIP3(ps_slice_hdr->i1_collocated_ref_idx, 0, MAX_DPB_SIZE - 1); |
| |
| if((ps_pps->i1_weighted_pred_flag && (PSLICE == ps_slice_hdr->i1_slice_type)) || |
| (ps_pps->i1_weighted_bipred_flag && (BSLICE == ps_slice_hdr->i1_slice_type))) |
| { |
| ihevcd_parse_pred_wt_ofst(ps_bitstrm, ps_sps, ps_pps, ps_slice_hdr); |
| } |
| UEV_PARSE("five_minus_max_num_merge_cand", value, ps_bitstrm); |
| ps_slice_hdr->i1_max_num_merge_cand = 5 - value; |
| |
| } |
| ps_slice_hdr->i1_max_num_merge_cand = CLIP3(ps_slice_hdr->i1_max_num_merge_cand, 1, 5); |
| SEV_PARSE("slice_qp_delta", value, ps_bitstrm); |
| ps_slice_hdr->i1_slice_qp_delta = value; |
| |
| if(ps_pps->i1_pic_slice_level_chroma_qp_offsets_present_flag) |
| { |
| SEV_PARSE("slice_cb_qp_offset", value, ps_bitstrm); |
| ps_slice_hdr->i1_slice_cb_qp_offset = value; |
| |
| SEV_PARSE("slice_cr_qp_offset", value, ps_bitstrm); |
| ps_slice_hdr->i1_slice_cr_qp_offset = value; |
| |
| } |
| ps_slice_hdr->i1_deblocking_filter_override_flag = 0; |
| ps_slice_hdr->i1_slice_disable_deblocking_filter_flag = ps_pps->i1_pic_disable_deblocking_filter_flag; |
| ps_slice_hdr->i1_beta_offset_div2 = ps_pps->i1_beta_offset_div2; |
| ps_slice_hdr->i1_tc_offset_div2 = ps_pps->i1_tc_offset_div2; |
| |
| disable_deblocking_filter_flag = ps_pps->i1_pic_disable_deblocking_filter_flag; |
| |
| if(ps_pps->i1_deblocking_filter_control_present_flag) |
| { |
| |
| if(ps_pps->i1_deblocking_filter_override_enabled_flag) |
| { |
| BITS_PARSE("deblocking_filter_override_flag", value, ps_bitstrm, 1); |
| ps_slice_hdr->i1_deblocking_filter_override_flag = value; |
| } |
| |
| if(ps_slice_hdr->i1_deblocking_filter_override_flag) |
| { |
| BITS_PARSE("slice_disable_deblocking_filter_flag", value, ps_bitstrm, 1); |
| ps_slice_hdr->i1_slice_disable_deblocking_filter_flag = value; |
| disable_deblocking_filter_flag = ps_slice_hdr->i1_slice_disable_deblocking_filter_flag; |
| |
| if(!ps_slice_hdr->i1_slice_disable_deblocking_filter_flag) |
| { |
| SEV_PARSE("beta_offset_div2", value, ps_bitstrm); |
| ps_slice_hdr->i1_beta_offset_div2 = value; |
| |
| SEV_PARSE("tc_offset_div2", value, ps_bitstrm); |
| ps_slice_hdr->i1_tc_offset_div2 = value; |
| |
| } |
| } |
| } |
| |
| ps_slice_hdr->i1_slice_loop_filter_across_slices_enabled_flag = ps_pps->i1_loop_filter_across_slices_enabled_flag; |
| if(ps_pps->i1_loop_filter_across_slices_enabled_flag && |
| (ps_slice_hdr->i1_slice_sao_luma_flag || ps_slice_hdr->i1_slice_sao_chroma_flag || !disable_deblocking_filter_flag)) |
| { |
| BITS_PARSE("slice_loop_filter_across_slices_enabled_flag", value, ps_bitstrm, 1); |
| ps_slice_hdr->i1_slice_loop_filter_across_slices_enabled_flag = value; |
| } |
| |
| } |
| |
| /* Check sanity of slice */ |
| if((!first_slice_in_pic_flag) && |
| (ps_codec->i4_pic_present)) |
| { |
| slice_header_t *ps_slice_hdr_base = ps_codec->ps_slice_hdr_base; |
| |
| |
| /* According to the standard, the above conditions must be satisfied - But for error resilience, |
| * only the following conditions are checked */ |
| if((ps_slice_hdr_base->i1_pps_id != ps_slice_hdr->i1_pps_id) || |
| (ps_slice_hdr_base->i4_pic_order_cnt_lsb != ps_slice_hdr->i4_pic_order_cnt_lsb)) |
| { |
| return IHEVCD_IGNORE_SLICE; |
| } |
| |
| } |
| |
| |
| if(0 == ps_codec->i4_pic_present) |
| { |
| ps_slice_hdr->i4_abs_pic_order_cnt = ihevcd_calc_poc(ps_codec, ps_nal, ps_sps->i1_log2_max_pic_order_cnt_lsb, ps_slice_hdr->i4_pic_order_cnt_lsb); |
| } |
| else |
| { |
| ps_slice_hdr->i4_abs_pic_order_cnt = ps_codec->s_parse.i4_abs_pic_order_cnt; |
| } |
| |
| |
| if(!first_slice_in_pic_flag) |
| { |
| /* Check if the current slice belongs to the same pic (Pic being parsed) */ |
| if(ps_codec->s_parse.i4_abs_pic_order_cnt == ps_slice_hdr->i4_abs_pic_order_cnt) |
| { |
| |
| /* If the Next CTB's index is less than the slice address, |
| * the previous slice is incomplete. |
| * Indicate slice error, and treat the remaining CTBs as skip */ |
| if(slice_address > ps_codec->s_parse.i4_next_ctb_indx) |
| { |
| if(ps_codec->i4_pic_present) |
| { |
| ps_codec->i4_slice_error = 1; |
| ps_codec->s_parse.i4_cur_slice_idx--; |
| if(ps_codec->s_parse.i4_cur_slice_idx < 0) |
| ps_codec->s_parse.i4_cur_slice_idx = 0; |
| |
| return ret; |
| } |
| else |
| { |
| return IHEVCD_IGNORE_SLICE; |
| } |
| } |
| /* If the slice address is less than the next CTB's index, |
| * extra CTBs have been decoded in the previous slice. |
| * Ignore the current slice. Treat it as incomplete */ |
| else if(slice_address < ps_codec->s_parse.i4_next_ctb_indx) |
| { |
| return IHEVCD_IGNORE_SLICE; |
| } |
| else |
| { |
| ps_codec->i4_slice_error = 0; |
| } |
| } |
| |
| /* The current slice does not belong to the pic that is being parsed */ |
| else |
| { |
| /* The previous pic is incomplete. |
| * Treat the remaining CTBs as skip */ |
| if(ps_codec->i4_pic_present) |
| { |
| slice_header_t *ps_slice_hdr_next; |
| ps_codec->i4_slice_error = 1; |
| ps_codec->s_parse.i4_cur_slice_idx--; |
| if(ps_codec->s_parse.i4_cur_slice_idx < 0) |
| ps_codec->s_parse.i4_cur_slice_idx = 0; |
| |
| ps_slice_hdr_next = ps_codec->s_parse.ps_slice_hdr_base + ((ps_codec->s_parse.i4_cur_slice_idx + 1) & (MAX_SLICE_HDR_CNT - 1)); |
| ps_slice_hdr_next->i2_ctb_x = 0; |
| ps_slice_hdr_next->i2_ctb_y = ps_codec->s_parse.ps_sps->i2_pic_ht_in_ctb; |
| return ret; |
| } |
| |
| /* If the previous pic is complete, |
| * return if the current slice is dependant |
| * otherwise, update the parse context's POC */ |
| else |
| { |
| if(ps_slice_hdr->i1_dependent_slice_flag) |
| return IHEVCD_IGNORE_SLICE; |
| |
| ps_codec->s_parse.i4_abs_pic_order_cnt = ps_slice_hdr->i4_abs_pic_order_cnt; |
| } |
| } |
| } |
| |
| /* If the slice is the first slice in the pic, update the parse context's POC */ |
| else |
| { |
| /* If the first slice is repeated, ignore the second occurrence |
| * If any other slice is repeated, the CTB addr will be greater than the slice addr, |
| * and hence the second occurrence is ignored */ |
| if(ps_codec->s_parse.i4_abs_pic_order_cnt == ps_slice_hdr->i4_abs_pic_order_cnt) |
| return IHEVCD_IGNORE_SLICE; |
| |
| ps_codec->s_parse.i4_abs_pic_order_cnt = ps_slice_hdr->i4_abs_pic_order_cnt; |
| } |
| |
| // printf("POC: %d\n", ps_slice_hdr->i4_abs_pic_order_cnt); |
| // AEV_TRACE("POC", ps_slice_hdr->i4_abs_pic_order_cnt, 0); |
| ps_slice_hdr->i4_num_entry_point_offsets = 0; |
| if((ps_pps->i1_tiles_enabled_flag) || |
| (ps_pps->i1_entropy_coding_sync_enabled_flag)) |
| { |
| UEV_PARSE("num_entry_point_offsets", value, ps_bitstrm); |
| ps_slice_hdr->i4_num_entry_point_offsets = value; |
| |
| { |
| WORD32 max_num_entry_point_offsets; |
| if((ps_pps->i1_tiles_enabled_flag) && |
| (ps_pps->i1_entropy_coding_sync_enabled_flag)) |
| { |
| max_num_entry_point_offsets = ps_pps->i1_num_tile_columns * (ps_sps->i2_pic_ht_in_ctb - 1); |
| } |
| else if(ps_pps->i1_tiles_enabled_flag) |
| { |
| max_num_entry_point_offsets = ps_pps->i1_num_tile_columns * ps_pps->i1_num_tile_rows; |
| } |
| else |
| { |
| max_num_entry_point_offsets = (ps_sps->i2_pic_ht_in_ctb - 1); |
| } |
| |
| ps_slice_hdr->i4_num_entry_point_offsets = CLIP3(ps_slice_hdr->i4_num_entry_point_offsets, |
| 0, max_num_entry_point_offsets); |
| } |
| |
| if(ps_slice_hdr->i4_num_entry_point_offsets > 0) |
| { |
| UEV_PARSE("offset_len_minus1", value, ps_bitstrm); |
| ps_slice_hdr->i1_offset_len = value + 1; |
| |
| for(i = 0; i < ps_slice_hdr->i4_num_entry_point_offsets; i++) |
| { |
| BITS_PARSE("entry_point_offset", value, ps_bitstrm, ps_slice_hdr->i1_offset_len); |
| |
| /* TODO: pu4_entry_point_offset needs to be initialized */ |
| //ps_slice_hdr->pu4_entry_point_offset[i] = value; |
| } |
| |
| } |
| } |
| |
| if(ps_pps->i1_slice_header_extension_present_flag) |
| { |
| UEV_PARSE("slice_header_extension_length", value, ps_bitstrm); |
| ps_slice_hdr->i2_slice_header_extension_length = value; |
| |
| |
| for(i = 0; i < ps_slice_hdr->i2_slice_header_extension_length; i++) |
| { |
| BITS_PARSE("slice_header_extension_data_byte", value, ps_bitstrm, 8); |
| } |
| |
| } |
| |
| ihevcd_bits_flush_to_byte_boundary(ps_bitstrm); |
| |
| { |
| dpb_mgr_t *ps_dpb_mgr = (dpb_mgr_t *)ps_codec->pv_dpb_mgr; |
| WORD32 r_idx; |
| |
| if((NAL_IDR_W_LP == ps_slice_hdr->i1_nal_unit_type) || |
| (NAL_IDR_N_LP == ps_slice_hdr->i1_nal_unit_type) || |
| (NAL_BLA_N_LP == ps_slice_hdr->i1_nal_unit_type) || |
| (NAL_BLA_W_DLP == ps_slice_hdr->i1_nal_unit_type) || |
| (NAL_BLA_W_LP == ps_slice_hdr->i1_nal_unit_type) || |
| (0 == ps_codec->u4_pic_cnt)) |
| { |
| for(i = 0; i < MAX_DPB_BUFS; i++) |
| { |
| if(ps_dpb_mgr->as_dpb_info[i].ps_pic_buf) |
| { |
| pic_buf_t *ps_pic_buf = ps_dpb_mgr->as_dpb_info[i].ps_pic_buf; |
| mv_buf_t *ps_mv_buf; |
| |
| /* Long term index is set to MAX_DPB_BUFS to ensure it is not added as LT */ |
| ihevc_dpb_mgr_del_ref((dpb_mgr_t *)ps_codec->pv_dpb_mgr, (buf_mgr_t *)ps_codec->pv_pic_buf_mgr, ps_pic_buf->i4_abs_poc); |
| /* Find buffer id of the MV bank corresponding to the buffer being freed (Buffer with POC of u4_abs_poc) */ |
| ps_mv_buf = (mv_buf_t *)ps_codec->ps_mv_buf; |
| for(j = 0; j < ps_codec->i4_max_dpb_size; j++) |
| { |
| if(ps_mv_buf && ps_mv_buf->i4_abs_poc == ps_pic_buf->i4_abs_poc) |
| { |
| ihevc_buf_mgr_release((buf_mgr_t *)ps_codec->pv_mv_buf_mgr, j, BUF_MGR_REF); |
| break; |
| } |
| ps_mv_buf++; |
| } |
| |
| } |
| |
| } |
| |
| /* Initialize the reference lists to NULL |
| * This is done to take care of the cases where the first pic is not IDR |
| * but the reference list is not created for the first pic because |
| * pic count is zero leaving the reference list uninitialised */ |
| for(r_idx = 0; r_idx < MAX_DPB_SIZE; r_idx++) |
| { |
| ps_slice_hdr->as_ref_pic_list0[r_idx].pv_pic_buf = NULL; |
| ps_slice_hdr->as_ref_pic_list0[r_idx].pv_mv_buf = NULL; |
| |
| ps_slice_hdr->as_ref_pic_list1[r_idx].pv_pic_buf = NULL; |
| ps_slice_hdr->as_ref_pic_list1[r_idx].pv_mv_buf = NULL; |
| } |
| |
| } |
| else |
| { |
| ret = ihevcd_ref_list(ps_codec, ps_pps, ps_sps, ps_slice_hdr); |
| if ((WORD32)IHEVCD_SUCCESS != ret) |
| { |
| return ret; |
| } |
| |
| } |
| |
| } |
| |
| /* Fill the remaining entries of the reference lists with the nearest POC |
| * This is done to handle cases where there is a corruption in the reference index */ |
| if(ps_codec->i4_pic_present) |
| { |
| pic_buf_t *ps_pic_buf_ref; |
| mv_buf_t *ps_mv_buf_ref; |
| WORD32 r_idx; |
| dpb_mgr_t *ps_dpb_mgr = (dpb_mgr_t *)ps_codec->pv_dpb_mgr; |
| buf_mgr_t *ps_mv_buf_mgr = (buf_mgr_t *)ps_codec->pv_mv_buf_mgr; |
| |
| ps_pic_buf_ref = ihevc_dpb_mgr_get_ref_by_nearest_poc(ps_dpb_mgr, ps_slice_hdr->i4_abs_pic_order_cnt); |
| if(NULL == ps_pic_buf_ref) |
| { |
| ps_pic_buf_ref = ps_codec->as_process[0].ps_cur_pic; |
| ps_mv_buf_ref = ps_codec->s_parse.ps_cur_mv_buf; |
| } |
| else |
| { |
| ps_mv_buf_ref = ihevcd_mv_mgr_get_poc(ps_mv_buf_mgr, ps_pic_buf_ref->i4_abs_poc); |
| } |
| |
| for(r_idx = 0; r_idx < ps_slice_hdr->i1_num_ref_idx_l0_active; r_idx++) |
| { |
| if(NULL == ps_slice_hdr->as_ref_pic_list0[r_idx].pv_pic_buf) |
| { |
| ps_slice_hdr->as_ref_pic_list0[r_idx].pv_pic_buf = (void *)ps_pic_buf_ref; |
| ps_slice_hdr->as_ref_pic_list0[r_idx].pv_mv_buf = (void *)ps_mv_buf_ref; |
| } |
| } |
| |
| for(r_idx = ps_slice_hdr->i1_num_ref_idx_l0_active; r_idx < MAX_DPB_SIZE; r_idx++) |
| { |
| ps_slice_hdr->as_ref_pic_list0[r_idx].pv_pic_buf = (void *)ps_pic_buf_ref; |
| ps_slice_hdr->as_ref_pic_list0[r_idx].pv_mv_buf = (void *)ps_mv_buf_ref; |
| } |
| |
| for(r_idx = 0; r_idx < ps_slice_hdr->i1_num_ref_idx_l1_active; r_idx++) |
| { |
| if(NULL == ps_slice_hdr->as_ref_pic_list1[r_idx].pv_pic_buf) |
| { |
| ps_slice_hdr->as_ref_pic_list1[r_idx].pv_pic_buf = (void *)ps_pic_buf_ref; |
| ps_slice_hdr->as_ref_pic_list1[r_idx].pv_mv_buf = (void *)ps_mv_buf_ref; |
| } |
| } |
| |
| for(r_idx = ps_slice_hdr->i1_num_ref_idx_l1_active; r_idx < MAX_DPB_SIZE; r_idx++) |
| { |
| ps_slice_hdr->as_ref_pic_list1[r_idx].pv_pic_buf = (void *)ps_pic_buf_ref; |
| ps_slice_hdr->as_ref_pic_list1[r_idx].pv_mv_buf = (void *)ps_mv_buf_ref; |
| } |
| } |
| |
| /* Update slice address in the header */ |
| if(!ps_slice_hdr->i1_first_slice_in_pic_flag) |
| { |
| ps_slice_hdr->i2_ctb_x = slice_address % ps_sps->i2_pic_wd_in_ctb; |
| ps_slice_hdr->i2_ctb_y = slice_address / ps_sps->i2_pic_wd_in_ctb; |
| |
| if(!ps_slice_hdr->i1_dependent_slice_flag) |
| { |
| ps_slice_hdr->i2_independent_ctb_x = ps_slice_hdr->i2_ctb_x; |
| ps_slice_hdr->i2_independent_ctb_y = ps_slice_hdr->i2_ctb_y; |
| } |
| } |
| else |
| { |
| ps_slice_hdr->i2_ctb_x = 0; |
| ps_slice_hdr->i2_ctb_y = 0; |
| |
| ps_slice_hdr->i2_independent_ctb_x = 0; |
| ps_slice_hdr->i2_independent_ctb_y = 0; |
| } |
| |
| /* If the first slice in the pic is missing, copy the current slice header to |
| * the first slice's header */ |
| if((!first_slice_in_pic_flag) && |
| (0 == ps_codec->i4_pic_present)) |
| { |
| slice_header_t *ps_slice_hdr_prev = ps_codec->s_parse.ps_slice_hdr_base; |
| ihevcd_copy_slice_hdr(ps_codec, 0, (ps_codec->s_parse.i4_cur_slice_idx & (MAX_SLICE_HDR_CNT - 1))); |
| |
| ps_codec->i4_slice_error = 1; |
| |
| ps_slice_hdr_prev->i2_ctb_x = 0; |
| ps_slice_hdr_prev->i2_ctb_y = 0; |
| |
| ps_codec->s_parse.i4_ctb_x = 0; |
| ps_codec->s_parse.i4_ctb_y = 0; |
| |
| ps_codec->s_parse.i4_cur_slice_idx = 0; |
| |
| if((ps_slice_hdr->i2_ctb_x == 0) && |
| (ps_slice_hdr->i2_ctb_y == 0)) |
| { |
| ps_slice_hdr->i2_ctb_x++; |
| } |
| } |
| |
| { |
| /* If skip B is enabled, |
| * ignore pictures that are non-reference |
| * TODO: (i1_nal_unit_type < NAL_BLA_W_LP) && (i1_nal_unit_type % 2 == 0) only says it is |
| * sub-layer non-reference slice. May need to find a way to detect actual non-reference pictures*/ |
| |
| if((i1_nal_unit_type < NAL_BLA_W_LP) && |
| (i1_nal_unit_type % 2 == 0)) |
| { |
| if(IVD_SKIP_B == ps_codec->e_pic_skip_mode) |
| return IHEVCD_IGNORE_SLICE; |
| } |
| |
| /* If skip PB is enabled, |
| * decode only I slices */ |
| if((IVD_SKIP_PB == ps_codec->e_pic_skip_mode) && |
| (ISLICE != ps_slice_hdr->i1_slice_type)) |
| { |
| return IHEVCD_IGNORE_SLICE; |
| } |
| } |
| |
| return ret; |
| } |
