119 lines
5.3 KiB
C
119 lines
5.3 KiB
C
/******************************************************************************
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*
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* Copyright (C) 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*****************************************************************************
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* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
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*/
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/**
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*******************************************************************************
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* @file
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* isvcd_vui.c
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*
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* @brief
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* This file contains routines to parse VUI NAL's
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*
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* @author
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* Kishore
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*
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* @remarks
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* None
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*
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*******************************************************************************
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*/
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#include "ih264_typedefs.h"
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#include "ih264_macros.h"
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#include "ih264_platform_macros.h"
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#include "ih264d_vui.h"
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#include "ih264d_bitstrm.h"
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#include "ih264d_parse_cavlc.h"
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#include "isvcd_structs.h"
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#include "ih264d_error_handler.h"
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/*****************************************************************************/
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/* */
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/* Function Name : isvcd_parse_vui_ext_parametres */
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/* */
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/* Description : This function parses VUI NALs. */
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/* Inputs : ps_vu4 pointer to VUI params */
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/* ps_bitstrm Bitstream */
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/* Globals : None */
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/* Processing : Parses VUI NAL's units and stores the info */
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/* Outputs : None */
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/* Returns : None */
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/* */
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/* Issues : None */
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/* */
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/* Revision History: */
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/* */
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/* DD MM YYYY Author(s) Changes (Describe the changes made) */
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/* 06 05 2002 Kishore Draft */
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/* */
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/*****************************************************************************/
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WORD32 isvcd_parse_vui_ext_parametres(svc_vui_ext_t *ps_svc_vui_ext, dec_bit_stream_t *ps_bitstrm)
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{
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UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
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UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
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WORD32 ret;
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UWORD32 u4_i;
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ps_svc_vui_ext->u4_vui_ext_num_entries_minus1 = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
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if(ps_svc_vui_ext->u4_vui_ext_num_entries_minus1 > 1023)
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{
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return ERROR_INV_SPS_PPS_T;
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}
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for(u4_i = 0; u4_i <= ps_svc_vui_ext->u4_vui_ext_num_entries_minus1; u4_i++)
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{
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ps_svc_vui_ext->u1_vui_ext_dependency_id[u4_i] = ih264d_get_bits_h264(ps_bitstrm, 3);
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ps_svc_vui_ext->u1_vui_ext_quality_id[u4_i] = ih264d_get_bits_h264(ps_bitstrm, 4);
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ps_svc_vui_ext->u1_vui_ext_temporal_id[u4_i] = ih264d_get_bits_h264(ps_bitstrm, 3);
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ps_svc_vui_ext->u1_vui_ext_timing_info_present_flag[u4_i] = ih264d_get_bit_h264(ps_bitstrm);
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if(1 == ps_svc_vui_ext->u1_vui_ext_timing_info_present_flag[u4_i])
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{
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ps_svc_vui_ext->u4_vui_ext_num_units_in_tick[u4_i] =
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ih264d_get_bits_h264(ps_bitstrm, 32);
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ps_svc_vui_ext->u4_vui_ext_time_scale[u4_i] = ih264d_get_bits_h264(ps_bitstrm, 32);
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ps_svc_vui_ext->u1_vui_ext_fixed_frame_rate_flag[u4_i] =
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ih264d_get_bit_h264(ps_bitstrm);
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}
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ps_svc_vui_ext->u1_vui_ext_nal_hrd_params_present_flag[u4_i] =
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ih264d_get_bit_h264(ps_bitstrm);
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if(ps_svc_vui_ext->u1_vui_ext_nal_hrd_params_present_flag[u4_i])
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{
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ret = ih264d_parse_hrd_parametres(&ps_svc_vui_ext->s_nal_hrd[u4_i], ps_bitstrm);
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if(ret != OK) return ret;
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}
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ps_svc_vui_ext->u1_vui_ext_vcl_hrd_params_present_flag[u4_i] =
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ih264d_get_bit_h264(ps_bitstrm);
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if(ps_svc_vui_ext->u1_vui_ext_vcl_hrd_params_present_flag[u4_i])
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{
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ret = ih264d_parse_hrd_parametres(&ps_svc_vui_ext->s_vcl_hrd[u4_i], ps_bitstrm);
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if(ret != OK) return ret;
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}
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if(ps_svc_vui_ext->u1_vui_ext_nal_hrd_params_present_flag[u4_i] ||
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ps_svc_vui_ext->u1_vui_ext_vcl_hrd_params_present_flag[u4_i])
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{
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ps_svc_vui_ext->u1_vui_ext_low_delay_hrd_flag[u4_i] = ih264d_get_bit_h264(ps_bitstrm);
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}
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ps_svc_vui_ext->u1_vui_ext_pic_struct_present_flag[u4_i] = ih264d_get_bit_h264(ps_bitstrm);
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}
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return OK;
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}
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