blob: 0bbec1f1384b9c2b924cd629f0a8fb6c3aa3900b (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* EVC decoder/parser shared code
*/
#ifndef AVCODEC_EVC_PS_H
#define AVCODEC_EVC_PS_H
#include <stdint.h>
#include "evc.h"
#include "get_bits.h"
#define EVC_MAX_QP_TABLE_SIZE 58
#define NUM_CPB 32
// rpl structure
typedef struct RefPicListStruct {
uint32_t ref_pic_num;
uint32_t ref_pics[EVC_MAX_NUM_REF_PICS];
} RefPicListStruct;
// chromaQP table structure to be signalled in SPS
typedef struct ChromaQpTable {
uint8_t chroma_qp_table_present_flag; // u(1)
uint8_t same_qp_table_for_chroma; // u(1)
uint8_t global_offset_flag; // u(1)
uint8_t num_points_in_qp_table_minus1[2]; // ue(v)
uint8_t delta_qp_in_val_minus1[2][EVC_MAX_QP_TABLE_SIZE]; // u(6)
int delta_qp_out_val[2][EVC_MAX_QP_TABLE_SIZE]; // se(v)
} ChromaQpTable;
// Hypothetical Reference Decoder (HRD) parameters, part of VUI
typedef struct HRDParameters {
uint8_t cpb_cnt_minus1; // ue(v)
uint8_t bit_rate_scale; // u(4)
uint8_t cpb_size_scale; // u(4)
uint32_t bit_rate_value_minus1[NUM_CPB]; // ue(v)
uint32_t cpb_size_value_minus1[NUM_CPB]; // ue(v)
uint8_t cbr_flag[NUM_CPB]; // u(1)
uint8_t initial_cpb_removal_delay_length_minus1; // u(5)
uint8_t cpb_removal_delay_length_minus1; // u(5)
uint8_t dpb_output_delay_length_minus1; // u(5)
uint8_t time_offset_length; // u(5)
} HRDParameters;
// video usability information (VUI) part of SPS
typedef struct VUIParameters {
uint8_t aspect_ratio_info_present_flag; // u(1)
uint8_t aspect_ratio_idc; // u(8)
uint16_t sar_width; // u(16)
uint16_t sar_height; // u(16)
uint8_t overscan_info_present_flag; // u(1)
uint8_t overscan_appropriate_flag; // u(1)
uint8_t video_signal_type_present_flag; // u(1)
uint8_t video_format; // u(3)
uint8_t video_full_range_flag; // u(1)
uint8_t colour_description_present_flag; // u(1)
uint8_t colour_primaries; // u(8)
uint8_t transfer_characteristics; // u(8)
uint8_t matrix_coefficients; // u(8)
uint8_t chroma_loc_info_present_flag; // u(1)
uint8_t chroma_sample_loc_type_top_field; // ue(v)
uint8_t chroma_sample_loc_type_bottom_field; // ue(v)
uint8_t neutral_chroma_indication_flag; // u(1)
uint8_t field_seq_flag; // u(1)
uint8_t timing_info_present_flag; // u(1)
uint32_t num_units_in_tick; // u(32)
uint32_t time_scale; // u(32)
uint8_t fixed_pic_rate_flag; // u(1)
uint8_t nal_hrd_parameters_present_flag; // u(1)
uint8_t vcl_hrd_parameters_present_flag; // u(1)
uint8_t low_delay_hrd_flag; // u(1)
uint8_t pic_struct_present_flag; // u(1)
uint8_t bitstream_restriction_flag; // u(1)
uint8_t motion_vectors_over_pic_boundaries_flag; // u(1)
uint8_t max_bytes_per_pic_denom; // ue(v)
uint8_t max_bits_per_mb_denom; // ue(v)
uint8_t log2_max_mv_length_horizontal; // ue(v)
uint8_t log2_max_mv_length_vertical; // ue(v)
uint32_t num_reorder_pics; // ue(v)
uint32_t max_dec_pic_buffering; // ue(v)
HRDParameters hrd_parameters;
} VUIParameters;
// The sturcture reflects SPS RBSP(raw byte sequence payload) layout
// @see ISO_IEC_23094-1 section 7.3.2.1
//
// The following descriptors specify the parsing process of each element
// u(n) - unsigned integer using n bits
// ue(v) - unsigned integer 0-th order Exp_Golomb-coded syntax element with the left bit first
typedef struct EVCParserSPS {
uint8_t sps_seq_parameter_set_id; // ue(v)
uint8_t profile_idc; // u(8)
uint8_t level_idc; // u(8)
uint32_t toolset_idc_h; // u(32)
uint32_t toolset_idc_l; // u(32)
uint8_t chroma_format_idc; // ue(v)
uint32_t pic_width_in_luma_samples; // ue(v)
uint32_t pic_height_in_luma_samples; // ue(v)
uint8_t bit_depth_luma_minus8; // ue(v)
uint8_t bit_depth_chroma_minus8; // ue(v)
uint8_t sps_btt_flag; // u(1)
uint32_t log2_ctu_size_minus2; // ue(v)
uint32_t log2_min_cb_size_minus2; // ue(v)
uint32_t log2_diff_ctu_max_14_cb_size; // ue(v)
uint32_t log2_diff_ctu_max_tt_cb_size; // ue(v)
uint32_t log2_diff_min_cb_min_tt_cb_size_minus2; // ue(v)
uint8_t sps_suco_flag; // u(1)
uint32_t log2_diff_ctu_size_max_suco_cb_size; // ue(v)
uint32_t log2_diff_max_suco_min_suco_cb_size; // ue(v)
uint8_t sps_admvp_flag; // u(1)
uint8_t sps_affine_flag; // u(1)
uint8_t sps_amvr_flag; // u(1)
uint8_t sps_dmvr_flag; // u(1)
uint8_t sps_mmvd_flag; // u(1)
uint8_t sps_hmvp_flag; // u(1)
uint8_t sps_eipd_flag; // u(1)
uint8_t sps_ibc_flag; // u(1)
uint32_t log2_max_ibc_cand_size_minus2; // ue(v)
uint8_t sps_cm_init_flag; // u(1)
uint8_t sps_adcc_flag; // u(1)
uint8_t sps_iqt_flag; // u(1)
uint8_t sps_ats_flag; // u(1)
uint8_t sps_addb_flag; // u(1)
uint8_t sps_alf_flag; // u(1)
uint8_t sps_htdf_flag; // u(1)
uint8_t sps_rpl_flag; // u(1)
uint8_t sps_pocs_flag; // u(1)
uint8_t sps_dquant_flag; // u(1)
uint8_t sps_dra_flag; // u(1)
uint32_t log2_max_pic_order_cnt_lsb_minus4; // ue(v)
uint32_t log2_sub_gop_length; // ue(v)
uint32_t log2_ref_pic_gap_length; // ue(v)
uint8_t max_num_tid0_ref_pics; // ue(v)
uint32_t sps_max_dec_pic_buffering_minus1; // ue(v)
uint8_t long_term_ref_pic_flag; // u(1)
uint8_t rpl1_same_as_rpl0_flag; // u(1)
uint8_t num_ref_pic_list_in_sps[2]; // ue(v)
struct RefPicListStruct rpls[2][EVC_MAX_NUM_RPLS];
uint8_t picture_cropping_flag; // u(1)
uint32_t picture_crop_left_offset; // ue(v)
uint32_t picture_crop_right_offset; // ue(v)
uint32_t picture_crop_top_offset; // ue(v)
uint32_t picture_crop_bottom_offset; // ue(v)
struct ChromaQpTable chroma_qp_table_struct;
uint8_t vui_parameters_present_flag; // u(1)
struct VUIParameters vui_parameters;
} EVCParserSPS;
typedef struct EVCParserPPS {
uint8_t pps_pic_parameter_set_id; // ue(v)
uint8_t pps_seq_parameter_set_id; // ue(v)
uint8_t num_ref_idx_default_active_minus1[2]; // ue(v)
uint8_t additional_lt_poc_lsb_len; // ue(v)
uint8_t rpl1_idx_present_flag; // u(1)
uint8_t single_tile_in_pic_flag; // u(1)
uint32_t num_tile_columns_minus1; // ue(v)
uint32_t num_tile_rows_minus1; // ue(v)
uint8_t uniform_tile_spacing_flag; // u(1)
uint32_t tile_column_width_minus1[EVC_MAX_TILE_ROWS]; // ue(v)
uint32_t tile_row_height_minus1[EVC_MAX_TILE_COLUMNS]; // ue(v)
uint8_t loop_filter_across_tiles_enabled_flag; // u(1)
uint32_t tile_offset_len_minus1; // ue(v)
uint8_t tile_id_len_minus1; // ue(v)
uint8_t explicit_tile_id_flag; // u(1)
uint32_t tile_id_val[EVC_MAX_TILE_ROWS][EVC_MAX_TILE_COLUMNS]; // u(v)
uint8_t pic_dra_enabled_flag; // u(1)
uint8_t pic_dra_aps_id; // u(5)
uint8_t arbitrary_slice_present_flag; // u(1)
uint8_t constrained_intra_pred_flag; // u(1)
uint8_t cu_qp_delta_enabled_flag; // u(1)
uint32_t log2_cu_qp_delta_area_minus6; // ue(v)
} EVCParserPPS;
typedef struct EVCParamSets {
EVCParserSPS *sps[EVC_MAX_SPS_COUNT];
EVCParserPPS *pps[EVC_MAX_PPS_COUNT];
} EVCParamSets;
// @see ISO_IEC_23094-1 (7.3.2.1 SPS RBSP syntax)
int ff_evc_parse_sps(GetBitContext *gb, EVCParamSets *ps);
// @see ISO_IEC_23094-1 (7.3.2.2 SPS RBSP syntax)
int ff_evc_parse_pps(GetBitContext *gb, EVCParamSets *ps);
void ff_evc_ps_free(EVCParamSets *ps);
#endif /* AVCODEC_EVC_PS_H */
|
