parsetcommon.c
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上传日期:2021-12-09
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文件大小:9k
源码类别:
Audio
开发平台:
Visual C++
- /*!
- **************************************************************************************
- * file
- * parsetcommon.c
- * brief
- * Picture and Sequence Parameter set generation and handling
- * date 25 November 2002
- * author
- * Main contributors (see contributors.h for copyright, address and affiliation details)
- * - Stephan Wenger <stewe@cs.tu-berlin.de>
- *
- **************************************************************************************
- */
- #include "global.h"
- #include "parsetcommon.h"
- #include "memalloc.h"
- /*!
- *************************************************************************************
- * brief
- * Allocates memory for a picture paramater set
- *
- * return
- * pointer to a pps
- *************************************************************************************
- */
- pic_parameter_set_rbsp_t *AllocPPS ()
- {
- pic_parameter_set_rbsp_t *p;
- if ((p=calloc (sizeof (pic_parameter_set_rbsp_t), 1)) == NULL)
- no_mem_exit ("AllocPPS: PPS");
- p->slice_group_id = NULL;
- return p;
- }
- /*!
- *************************************************************************************
- * brief
- * Allocates memory for am sequence paramater set
- *
- * return
- * pointer to a sps
- *************************************************************************************
- */
- seq_parameter_set_rbsp_t *AllocSPS ()
- {
- seq_parameter_set_rbsp_t *p;
- if ((p=calloc (sizeof (seq_parameter_set_rbsp_t), 1)) == NULL)
- no_mem_exit ("AllocSPS: SPS");
- return p;
- }
- /*!
- *************************************************************************************
- * brief
- * Frees a picture parameter set
- *
- * param pps to be freed
- * Picture parameter set to be freed
- *************************************************************************************
- */
- void FreePPS (pic_parameter_set_rbsp_t *pps)
- {
- assert (pps != NULL);
- if (pps->slice_group_id != NULL)
- free (pps->slice_group_id);
- free (pps);
- }
- /*!
- *************************************************************************************
- * brief
- * Frees a sps
- *
- * param sps
- * Sequence parameter set to be freed
- *************************************************************************************
- */
- void FreeSPS (seq_parameter_set_rbsp_t *sps)
- {
- assert (sps != NULL);
- free (sps);
- }
- int sps_is_equal(seq_parameter_set_rbsp_t *sps1, seq_parameter_set_rbsp_t *sps2)
- {
- unsigned i;
- int equal = 1;
- if ((!sps1->Valid) || (!sps2->Valid))
- return 0;
- equal &= (sps1->profile_idc == sps2->profile_idc);
- equal &= (sps1->constrained_set0_flag == sps2->constrained_set0_flag);
- equal &= (sps1->constrained_set1_flag == sps2->constrained_set1_flag);
- equal &= (sps1->constrained_set2_flag == sps2->constrained_set2_flag);
- equal &= (sps1->level_idc == sps2->level_idc);
- equal &= (sps1->seq_parameter_set_id == sps2->seq_parameter_set_id);
- equal &= (sps1->log2_max_frame_num_minus4 == sps2->log2_max_frame_num_minus4);
- equal &= (sps1->pic_order_cnt_type == sps2->pic_order_cnt_type);
- if (!equal) return equal;
- if( sps1->pic_order_cnt_type == 0 )
- {
- equal &= (sps1->log2_max_pic_order_cnt_lsb_minus4 == sps2->log2_max_pic_order_cnt_lsb_minus4);
- }
- else if( sps1->pic_order_cnt_type == 1 )
- {
- equal &= (sps1->delta_pic_order_always_zero_flag == sps2->delta_pic_order_always_zero_flag);
- equal &= (sps1->offset_for_non_ref_pic == sps2->offset_for_non_ref_pic);
- equal &= (sps1->offset_for_top_to_bottom_field == sps2->offset_for_top_to_bottom_field);
- equal &= (sps1->num_ref_frames_in_pic_order_cnt_cycle == sps2->num_ref_frames_in_pic_order_cnt_cycle);
- if (!equal) return equal;
- for ( i = 0 ; i< sps1->num_ref_frames_in_pic_order_cnt_cycle ;i ++)
- equal &= (sps1->offset_for_ref_frame[i] == sps2->offset_for_ref_frame[i]);
- }
- equal &= (sps1->num_ref_frames == sps2->num_ref_frames);
- equal &= (sps1->gaps_in_frame_num_value_allowed_flag == sps2->gaps_in_frame_num_value_allowed_flag);
- equal &= (sps1->pic_width_in_mbs_minus1 == sps2->pic_width_in_mbs_minus1);
- equal &= (sps1->pic_height_in_map_units_minus1 == sps2->pic_height_in_map_units_minus1);
- equal &= (sps1->frame_mbs_only_flag == sps2->frame_mbs_only_flag);
- if (!equal) return equal;
- if( !sps1->frame_mbs_only_flag )
- equal &= (sps1->mb_adaptive_frame_field_flag == sps2->mb_adaptive_frame_field_flag);
- equal &= (sps1->direct_8x8_inference_flag == sps2->direct_8x8_inference_flag);
- equal &= (sps1->frame_cropping_flag == sps2->frame_cropping_flag);
- if (!equal) return equal;
- if (sps1->frame_cropping_flag)
- {
- equal &= (sps1->frame_cropping_rect_left_offset == sps2->frame_cropping_rect_left_offset);
- equal &= (sps1->frame_cropping_rect_right_offset == sps2->frame_cropping_rect_right_offset);
- equal &= (sps1->frame_cropping_rect_top_offset == sps2->frame_cropping_rect_top_offset);
- equal &= (sps1->frame_cropping_rect_bottom_offset == sps2->frame_cropping_rect_bottom_offset);
- }
- equal &= (sps1->vui_parameters_present_flag == sps2->vui_parameters_present_flag);
- return equal;
- }
- int pps_is_equal(pic_parameter_set_rbsp_t *pps1, pic_parameter_set_rbsp_t *pps2)
- {
- unsigned i, j;
- int equal = 1;
- if ((!pps1->Valid) || (!pps2->Valid))
- return 0;
- equal &= (pps1->pic_parameter_set_id == pps2->pic_parameter_set_id);
- equal &= (pps1->seq_parameter_set_id == pps2->seq_parameter_set_id);
- equal &= (pps1->entropy_coding_mode_flag == pps2->entropy_coding_mode_flag);
- equal &= (pps1->pic_order_present_flag == pps2->pic_order_present_flag);
- equal &= (pps1->num_slice_groups_minus1 == pps2->num_slice_groups_minus1);
- if (!equal) return equal;
- if (pps1->num_slice_groups_minus1>0)
- {
- equal &= (pps1->slice_group_map_type == pps2->slice_group_map_type);
- if (!equal) return equal;
- if (pps1->slice_group_map_type == 0)
- {
- for (i=0; i<=pps1->num_slice_groups_minus1; i++)
- equal &= (pps1->run_length_minus1[i] == pps2->run_length_minus1[i]);
- }
- else if( pps1->slice_group_map_type == 2 )
- {
- for (i=0; i<pps1->num_slice_groups_minus1; i++)
- {
- equal &= (pps1->top_left[i] == pps2->top_left[i]);
- equal &= (pps1->bottom_right[i] == pps2->bottom_right[i]);
- }
- }
- else if( pps1->slice_group_map_type == 3 || pps1->slice_group_map_type==4 || pps1->slice_group_map_type==5 )
- {
- equal &= (pps1->slice_group_change_direction_flag == pps2->slice_group_change_direction_flag);
- equal &= (pps1->slice_group_change_rate_minus1 == pps2->slice_group_change_rate_minus1);
- }
- else if( pps1->slice_group_map_type == 6 )
- {
- equal &= (pps1->num_slice_group_map_units_minus1 == pps2->num_slice_group_map_units_minus1);
- if (!equal) return equal;
- for (i=0; i<=pps1->num_slice_group_map_units_minus1; i++)
- equal &= (pps1->slice_group_id[i] == pps2->slice_group_id[i]);
- }
- }
- equal &= (pps1->num_ref_idx_l0_active_minus1 == pps2->num_ref_idx_l0_active_minus1);
- equal &= (pps1->num_ref_idx_l1_active_minus1 == pps2->num_ref_idx_l1_active_minus1);
- equal &= (pps1->weighted_pred_flag == pps2->weighted_pred_flag);
- equal &= (pps1->weighted_bipred_idc == pps2->weighted_bipred_idc);
- equal &= (pps1->pic_init_qp_minus26 == pps2->pic_init_qp_minus26);
- equal &= (pps1->pic_init_qs_minus26 == pps2->pic_init_qs_minus26);
- equal &= (pps1->chroma_qp_index_offset == pps2->chroma_qp_index_offset);
- equal &= (pps1->deblocking_filter_control_present_flag == pps2->deblocking_filter_control_present_flag);
- equal &= (pps1->constrained_intra_pred_flag == pps2->constrained_intra_pred_flag);
- equal &= (pps1->redundant_pic_cnt_present_flag == pps2->redundant_pic_cnt_present_flag);
- if (!equal) return equal;
- //Fidelity Range Extensions Stuff
- //It is initialized to zero, so should be ok to check all the time.
- equal &= (pps1->transform_8x8_mode_flag == pps2->transform_8x8_mode_flag);
- equal &= (pps1->pic_scaling_matrix_present_flag == pps2->transform_8x8_mode_flag);
- if(pps1->pic_scaling_matrix_present_flag)
- {
- for(i = 0; i < (6 + ((unsigned)pps1->transform_8x8_mode_flag << 1)); i++)
- {
- equal &= (pps1->pic_scaling_list_present_flag[i] == pps2->pic_scaling_list_present_flag[i]);
- if(pps1->pic_scaling_list_present_flag[i])
- {
- if(i < 6)
- {
- for (j = 0; j < 16; j++)
- equal &= (pps1->ScalingList4x4[i][j] == pps2->ScalingList4x4[i][j]);
- }
- else
- {
- for (j = 0; j < 64; j++)
- equal &= (pps1->ScalingList8x8[i-6][j] == pps2->ScalingList8x8[i-6][j]);
- }
- }
- }
- }
- equal &= (pps1->second_chroma_qp_index_offset == pps2->second_chroma_qp_index_offset);
- return equal;
- }