FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/vvc/ps.c
Date: 2024-05-03 15:42:48
Exec Total Coverage
Lines: 711 789 90.1%
Functions: 69 71 97.2%
Branches: 346 434 79.7%
Line Branch Exec Source
1 /*
2 * VVC parameter set parser
3 *
4 * Copyright (C) 2023 Nuo Mi
5 * Copyright (C) 2022 Xu Mu
6 *
7 * This file is part of FFmpeg.
8 *
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24 #include "libavcodec/cbs_h266.h"
25 #include "libavutil/mem.h"
26 #include "libavutil/pixdesc.h"
27 #include "libavcodec/refstruct.h"
28 #include "data.h"
29 #include "ps.h"
30 #include "dec.h"
31
32 54 static int sps_map_pixel_format(VVCSPS *sps, void *log_ctx)
33 {
34 54 const H266RawSPS *r = sps->r;
35 const AVPixFmtDescriptor *desc;
36
37
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 54 switch (sps->bit_depth) {
38 2 case 8:
39
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 2 if (r->sps_chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY8;
40
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 2 if (r->sps_chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P;
41
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 2 if (r->sps_chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P;
42
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 2 if (r->sps_chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P;
43 2 break;
44 52 case 10:
45
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 52 if (r->sps_chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY10;
46
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 52 if (r->sps_chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P10;
47
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 52 if (r->sps_chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P10;
48
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 52 if (r->sps_chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P10;
49 52 break;
50 ✗ case 12:
51 ✗ if (r->sps_chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY12;
52 ✗ if (r->sps_chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P12;
53 ✗ if (r->sps_chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P12;
54 ✗ if (r->sps_chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P12;
55 ✗ break;
56 ✗ default:
57 ✗ av_log(log_ctx, AV_LOG_ERROR,
58 "The following bit-depths are currently specified: 8, 10, 12 bits, "
59 "chroma_format_idc is %d, depth is %d\n",
60 ✗ r->sps_chroma_format_idc, sps->bit_depth);
61 ✗ return AVERROR_INVALIDDATA;
62 }
63
64 54 desc = av_pix_fmt_desc_get(sps->pix_fmt);
65
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 54 if (!desc)
66 ✗ return AVERROR(EINVAL);
67
68 54 sps->hshift[0] = sps->vshift[0] = 0;
69 54 sps->hshift[2] = sps->hshift[1] = desc->log2_chroma_w;
70 54 sps->vshift[2] = sps->vshift[1] = desc->log2_chroma_h;
71
72 54 sps->pixel_shift = sps->bit_depth > 8;
73
74 54 return 0;
75 }
76
77 54 static int sps_bit_depth(VVCSPS *sps, void *log_ctx)
78 {
79 54 const H266RawSPS *r = sps->r;
80
81 54 sps->bit_depth = r->sps_bitdepth_minus8 + 8;
82 54 sps->qp_bd_offset = 6 * (sps->bit_depth - 8);
83 54 sps->log2_transform_range =
84
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 54 r->sps_extended_precision_flag ? FFMAX(15, FFMIN(20, sps->bit_depth + 6)) : 15;
85 54 return sps_map_pixel_format(sps, log_ctx);
86 }
87
88 52 static int sps_chroma_qp_table(VVCSPS *sps)
89 {
90 52 const H266RawSPS *r = sps->r;
91 104 const int num_qp_tables = r->sps_same_qp_table_for_chroma_flag ?
92
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 52 1 : (r->sps_joint_cbcr_enabled_flag ? 3 : 2);
93
94
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 108 for (int i = 0; i < num_qp_tables; i++) {
95 int num_points_in_qp_table;
96 int8_t qp_in[VVC_MAX_POINTS_IN_QP_TABLE], qp_out[VVC_MAX_POINTS_IN_QP_TABLE];
97 unsigned int delta_qp_in[VVC_MAX_POINTS_IN_QP_TABLE];
98 56 int off = sps->qp_bd_offset;
99
100 56 num_points_in_qp_table = r->sps_num_points_in_qp_table_minus1[i] + 1;
101
102 56 qp_out[0] = qp_in[0] = r->sps_qp_table_start_minus26[i] + 26;
103
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 228 for (int j = 0; j < num_points_in_qp_table; j++ ) {
104 172 delta_qp_in[j] = r->sps_delta_qp_in_val_minus1[i][j] + 1;
105 172 qp_in[j+1] = qp_in[j] + delta_qp_in[j];
106 172 qp_out[j+1] = qp_out[j] + (r->sps_delta_qp_in_val_minus1[i][j] ^ r->sps_delta_qp_diff_val[i][j]);
107 }
108 56 sps->chroma_qp_table[i][qp_in[0] + off] = qp_out[0];
109
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 1616 for (int k = qp_in[0] - 1 + off; k >= 0; k--)
110 1560 sps->chroma_qp_table[i][k] = av_clip(sps->chroma_qp_table[i][k+1]-1, -off, 63);
111
112
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 228 for (int j = 0; j < num_points_in_qp_table; j++) {
113 172 int sh = delta_qp_in[j] >> 1;
114
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 1656 for (int k = qp_in[j] + 1 + off, m = 1; k <= qp_in[j+1] + off; k++, m++) {
115 1484 sps->chroma_qp_table[i][k] = sps->chroma_qp_table[i][qp_in[j] + off] +
116 1484 ((qp_out[j+1] - qp_out[j]) * m + sh) / delta_qp_in[j];
117 }
118 }
119
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 1188 for (int k = qp_in[num_points_in_qp_table] + 1 + off; k <= 63 + off; k++)
120 1132 sps->chroma_qp_table[i][k] = av_clip(sps->chroma_qp_table[i][k-1] + 1, -sps->qp_bd_offset, 63);
121 }
122
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 52 if (r->sps_same_qp_table_for_chroma_flag) {
123 50 memcpy(&sps->chroma_qp_table[1], &sps->chroma_qp_table[0], sizeof(sps->chroma_qp_table[0]));
124 50 memcpy(&sps->chroma_qp_table[2], &sps->chroma_qp_table[0], sizeof(sps->chroma_qp_table[0]));
125 }
126
127 52 return 0;
128 }
129
130 54 static void sps_poc(VVCSPS *sps)
131 {
132 54 sps->max_pic_order_cnt_lsb = 1 << (sps->r->sps_log2_max_pic_order_cnt_lsb_minus4 + 4);
133 54 }
134
135 54 static void sps_inter(VVCSPS *sps)
136 {
137 54 const H266RawSPS *r = sps->r;
138
139 54 sps->max_num_merge_cand = 6 - r->sps_six_minus_max_num_merge_cand;
140 54 sps->max_num_ibc_merge_cand = 6 - r->sps_six_minus_max_num_ibc_merge_cand;
141
142
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 54 if (sps->r->sps_gpm_enabled_flag) {
143 48 sps->max_num_gpm_merge_cand = 2;
144
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 48 if (sps->max_num_merge_cand >= 3)
145 48 sps->max_num_gpm_merge_cand = sps->max_num_merge_cand - r->sps_max_num_merge_cand_minus_max_num_gpm_cand;
146 }
147
148 54 sps->log2_parallel_merge_level = r->sps_log2_parallel_merge_level_minus2 + 2;
149 54 }
150
151 54 static void sps_partition_constraints(VVCSPS* sps)
152 {
153 54 const H266RawSPS *r = sps->r;
154
155 54 sps->ctb_log2_size_y = r->sps_log2_ctu_size_minus5 + 5;
156 54 sps->ctb_size_y = 1 << sps->ctb_log2_size_y;
157 54 sps->min_cb_log2_size_y = r->sps_log2_min_luma_coding_block_size_minus2 + 2;
158 54 sps->min_cb_size_y = 1 << sps->min_cb_log2_size_y;
159
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 54 sps->max_tb_size_y = 1 << (r->sps_max_luma_transform_size_64_flag ? 6 : 5);
160 54 sps->max_ts_size = 1 << (r->sps_log2_transform_skip_max_size_minus2 + 2);
161 54 }
162
163 54 static void sps_ladf(VVCSPS* sps)
164 {
165 54 const H266RawSPS *r = sps->r;
166
167
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 54 if (r->sps_ladf_enabled_flag) {
168 ✗ sps->num_ladf_intervals = r->sps_num_ladf_intervals_minus2 + 2;
169 ✗ sps->ladf_interval_lower_bound[0] = 0;
170 ✗ for (int i = 0; i < sps->num_ladf_intervals - 1; i++) {
171 ✗ sps->ladf_interval_lower_bound[i + 1] =
172 ✗ sps->ladf_interval_lower_bound[i] + r->sps_ladf_delta_threshold_minus1[i] + 1;
173 }
174 }
175 54 }
176
177 54 static int sps_derive(VVCSPS *sps, void *log_ctx)
178 {
179 int ret;
180 54 const H266RawSPS *r = sps->r;
181
182 54 ret = sps_bit_depth(sps, log_ctx);
183
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 54 if (ret < 0)
184 ✗ return ret;
185 54 sps_poc(sps);
186 54 sps_inter(sps);
187 54 sps_partition_constraints(sps);
188 54 sps_ladf(sps);
189
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 54 if (r->sps_chroma_format_idc != 0)
190 52 sps_chroma_qp_table(sps);
191
192 54 return 0;
193 }
194
195 54 static void sps_free(FFRefStructOpaque opaque, void *obj)
196 {
197 54 VVCSPS *sps = obj;
198 54 ff_refstruct_unref(&sps->r);
199 54 }
200
201 54 static const VVCSPS *sps_alloc(const H266RawSPS *rsps, void *log_ctx)
202 {
203 int ret;
204 54 VVCSPS *sps = ff_refstruct_alloc_ext(sizeof(*sps), 0, NULL, sps_free);
205
206
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 54 if (!sps)
207 ✗ return NULL;
208
209 54 ff_refstruct_replace(&sps->r, rsps);
210
211 54 ret = sps_derive(sps, log_ctx);
212
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 54 if (ret < 0)
213 ✗ goto fail;
214
215 54 return sps;
216
217 ✗ fail:
218 ✗ ff_refstruct_unref(&sps);
219 ✗ return NULL;
220 }
221
222 872 static int decode_sps(VVCParamSets *ps, const H266RawSPS *rsps, void *log_ctx, int is_clvss)
223 {
224 872 const int sps_id = rsps->sps_seq_parameter_set_id;
225 872 const VVCSPS *old_sps = ps->sps_list[sps_id];
226 const VVCSPS *sps;
227
228
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 872 if (is_clvss) {
229 63 ps->sps_id_used = 0;
230 }
231
232
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 872 if (old_sps) {
233
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 821 if (old_sps->r == rsps || !memcmp(old_sps->r, rsps, sizeof(*old_sps->r)))
234 818 return 0;
235
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 3 else if (ps->sps_id_used & (1 << sps_id))
236 ✗ return AVERROR_INVALIDDATA;
237 }
238
239 54 sps = sps_alloc(rsps, log_ctx);
240
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 54 if (!sps)
241 ✗ return AVERROR(ENOMEM);
242
243 54 ff_refstruct_unref(&ps->sps_list[sps_id]);
244 54 ps->sps_list[sps_id] = sps;
245 54 ps->sps_id_used |= (1 << sps_id);
246
247 54 return 0;
248 }
249
250 132 static void pps_chroma_qp_offset(VVCPPS *pps)
251 {
252 132 pps->chroma_qp_offset[CB - 1] = pps->r->pps_cb_qp_offset;
253 132 pps->chroma_qp_offset[CR - 1] = pps->r->pps_cr_qp_offset;
254 132 pps->chroma_qp_offset[JCBCR - 1]= pps->r->pps_joint_cbcr_qp_offset_value;
255
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 924 for (int i = 0; i < 6; i++) {
256 792 pps->chroma_qp_offset_list[i][CB - 1] = pps->r->pps_cb_qp_offset_list[i];
257 792 pps->chroma_qp_offset_list[i][CR - 1] = pps->r->pps_cr_qp_offset_list[i];
258 792 pps->chroma_qp_offset_list[i][JCBCR - 1]= pps->r->pps_joint_cbcr_qp_offset_list[i];
259 }
260 132 }
261
262 132 static void pps_width_height(VVCPPS *pps, const VVCSPS *sps)
263 {
264 132 const H266RawPPS *r = pps->r;
265
266 132 pps->width = r->pps_pic_width_in_luma_samples;
267 132 pps->height = r->pps_pic_height_in_luma_samples;
268
269 132 pps->ctb_width = AV_CEIL_RSHIFT(pps->width, sps->ctb_log2_size_y);
270 132 pps->ctb_height = AV_CEIL_RSHIFT(pps->height, sps->ctb_log2_size_y);
271 132 pps->ctb_count = pps->ctb_width * pps->ctb_height;
272
273 132 pps->min_cb_width = pps->width >> sps->min_cb_log2_size_y;
274 132 pps->min_cb_height = pps->height >> sps->min_cb_log2_size_y;
275
276 132 pps->min_pu_width = pps->width >> MIN_PU_LOG2;
277 132 pps->min_pu_height = pps->height >> MIN_PU_LOG2;
278 132 pps->min_tu_width = pps->width >> MIN_TU_LOG2;
279 132 pps->min_tu_height = pps->height >> MIN_TU_LOG2;
280
281 132 pps->width32 = AV_CEIL_RSHIFT(pps->width, 5);
282 132 pps->height32 = AV_CEIL_RSHIFT(pps->height, 5);
283 132 pps->width64 = AV_CEIL_RSHIFT(pps->width, 6);
284 132 pps->height64 = AV_CEIL_RSHIFT(pps->height, 6);
285 132 }
286
287 132 static int pps_bd(VVCPPS *pps)
288 {
289 132 const H266RawPPS *r = pps->r;
290
291 132 pps->col_bd = av_calloc(r->num_tile_columns + 1, sizeof(*pps->col_bd));
292 132 pps->row_bd = av_calloc(r->num_tile_rows + 1, sizeof(*pps->row_bd));
293 132 pps->ctb_to_col_bd = av_calloc(pps->ctb_width + 1, sizeof(*pps->ctb_to_col_bd));
294 132 pps->ctb_to_row_bd = av_calloc(pps->ctb_height + 1, sizeof(*pps->ctb_to_col_bd));
295
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 132 if (!pps->col_bd || !pps->row_bd || !pps->ctb_to_col_bd || !pps->ctb_to_row_bd)
296 ✗ return AVERROR(ENOMEM);
297
298
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 305 for (int i = 0, j = 0; i < r->num_tile_columns; i++) {
299 173 pps->col_bd[i] = j;
300 173 j += r->col_width_val[i];
301
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 1034 for (int k = pps->col_bd[i]; k < j; k++)
302 861 pps->ctb_to_col_bd[k] = pps->col_bd[i];
303 }
304 132 pps->col_bd[r->num_tile_columns] = pps->ctb_to_col_bd[pps->ctb_width] = pps->ctb_width;
305
306
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 296 for (int i = 0, j = 0; i < r->num_tile_rows; i++) {
307 164 pps->row_bd[i] = j;
308 164 j += r->row_height_val[i];
309
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 639 for (int k = pps->row_bd[i]; k < j; k++)
310 475 pps->ctb_to_row_bd[k] = pps->row_bd[i];
311 }
312 132 pps->row_bd[r->num_tile_rows] = pps->ctb_to_row_bd[pps->ctb_height] = pps->ctb_height;
313
314 132 return 0;
315 }
316
317
318 78 static int next_tile_idx(int tile_idx, const int i, const H266RawPPS *r)
319 {
320
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 78 if (r->pps_tile_idx_delta_present_flag) {
321 55 tile_idx += r->pps_tile_idx_delta_val[i];
322 } else {
323 23 tile_idx += r->pps_slice_width_in_tiles_minus1[i] + 1;
324
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 23 if (tile_idx % r->num_tile_columns == 0)
325 7 tile_idx += (r->pps_slice_height_in_tiles_minus1[i]) * r->num_tile_columns;
326 }
327 78 return tile_idx;
328 }
329
330 78 static void tile_xy(int *tile_x, int *tile_y, const int tile_idx, const VVCPPS *pps)
331 {
332 78 *tile_x = tile_idx % pps->r->num_tile_columns;
333 78 *tile_y = tile_idx / pps->r->num_tile_columns;
334 78 }
335
336 305 static void ctu_xy(int *rx, int *ry, const int tile_x, const int tile_y, const VVCPPS *pps)
337 {
338 305 *rx = pps->col_bd[tile_x];
339 305 *ry = pps->row_bd[tile_y];
340 305 }
341
342 4689 static int ctu_rs(const int rx, const int ry, const VVCPPS *pps)
343 {
344 4689 return pps->ctb_width * ry + rx;
345 }
346
347 351 static int pps_add_ctus(VVCPPS *pps, int *off, const int rx, const int ry,
348 const int w, const int h)
349 {
350 351 int start = *off;
351
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 1153 for (int y = 0; y < h; y++) {
352
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 5491 for (int x = 0; x < w; x++) {
353 4689 pps->ctb_addr_in_slice[*off] = ctu_rs(rx + x, ry + y, pps);
354 4689 (*off)++;
355 }
356 }
357 351 return *off - start;
358 }
359
360 ✗ static void pps_single_slice_picture(VVCPPS *pps, int *off)
361 {
362 ✗ for (int j = 0; j < pps->r->num_tile_rows; j++) {
363 ✗ for (int i = 0; i < pps->r->num_tile_columns; i++) {
364 ✗ pps->num_ctus_in_slice[0] = pps_add_ctus(pps, off,
365 ✗ pps->col_bd[i], pps->row_bd[j],
366 ✗ pps->r->col_width_val[i], pps->r->row_height_val[j]);
367 }
368 }
369 ✗ }
370
371 16 static void subpic_tiles(int *tile_x, int *tile_y, int *tile_x_end, int *tile_y_end,
372 const VVCSPS *sps, const VVCPPS *pps, const int i)
373 {
374 16 const int rx = sps->r->sps_subpic_ctu_top_left_x[i];
375 16 const int ry = sps->r->sps_subpic_ctu_top_left_y[i];
376
377 16 *tile_x = *tile_y = 0;
378
379
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 40 while (pps->col_bd[*tile_x] != rx)
380 24 (*tile_x)++;
381
382
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 24 while (pps->row_bd[*tile_y] != ry)
383 8 (*tile_y)++;
384
385 16 *tile_x_end = (*tile_x);
386 16 *tile_y_end = (*tile_y);
387
388
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 32 while (pps->col_bd[*tile_x_end] < rx + sps->r->sps_subpic_width_minus1[i] + 1)
389 16 (*tile_x_end)++;
390
391
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 32 while (pps->row_bd[*tile_y_end] < ry + sps->r->sps_subpic_height_minus1[i] + 1)
392 16 (*tile_y_end)++;
393 16 }
394
395 ✗ static void pps_subpic_less_than_one_tile_slice(VVCPPS *pps, const VVCSPS *sps, const int i, const int tx, const int ty, int *off)
396 {
397 ✗ pps->num_ctus_in_slice[i] = pps_add_ctus(pps, off,
398 ✗ pps->col_bd[tx], pps->row_bd[ty],
399 ✗ pps->r->col_width_val[tx], sps->r->sps_subpic_height_minus1[i] + 1);
400 ✗ }
401
402 16 static void pps_subpic_one_or_more_tiles_slice(VVCPPS *pps, const int tile_x, const int tile_y, const int x_end, const int y_end, const int i, int *off)
403 {
404
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 32 for (int ty = tile_y; ty < y_end; ty++) {
405
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 32 for (int tx = tile_x; tx < x_end; tx++) {
406 16 pps->num_ctus_in_slice[i] += pps_add_ctus(pps, off,
407 16 pps->col_bd[tx], pps->row_bd[ty],
408 16 pps->r->col_width_val[tx], pps->r->row_height_val[ty]);
409 }
410 }
411 16 }
412
413 16 static void pps_subpic_slice(VVCPPS *pps, const VVCSPS *sps, const int i, int *off)
414 {
415 int tx, ty, x_end, y_end;
416
417 16 pps->slice_start_offset[i] = *off;
418 16 pps->num_ctus_in_slice[i] = 0;
419
420 16 subpic_tiles(&tx, &ty, &x_end, &y_end, sps, pps, i);
421
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 16 if (ty + 1 == y_end && sps->r->sps_subpic_height_minus1[i] + 1 < pps->r->row_height_val[ty])
422 ✗ pps_subpic_less_than_one_tile_slice(pps, sps, i, tx, ty, off);
423 else
424 16 pps_subpic_one_or_more_tiles_slice(pps, tx, ty, x_end, y_end, i, off);
425 16 }
426
427 2 static void pps_single_slice_per_subpic(VVCPPS *pps, const VVCSPS *sps, int *off)
428 {
429
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 2 if (!sps->r->sps_subpic_info_present_flag) {
430 ✗ pps_single_slice_picture(pps, off);
431 } else {
432
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 18 for (int i = 0; i < pps->r->pps_num_slices_in_pic_minus1 + 1; i++)
433 16 pps_subpic_slice(pps, sps, i, off);
434 }
435 2 }
436
437 61 static int pps_one_tile_slices(VVCPPS *pps, const int tile_idx, int i, int *off)
438 {
439 61 const H266RawPPS *r = pps->r;
440 int rx, ry, ctu_y_end, tile_x, tile_y;
441
442 61 tile_xy(&tile_x, &tile_y, tile_idx, pps);
443 61 ctu_xy(&rx, &ry, tile_x, tile_y, pps);
444 61 ctu_y_end = ry + r->row_height_val[tile_y];
445
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 152 while (ry < ctu_y_end) {
446 91 pps->slice_start_offset[i] = *off;
447 182 pps->num_ctus_in_slice[i] = pps_add_ctus(pps, off, rx, ry,
448 91 r->col_width_val[tile_x], r->slice_height_in_ctus[i]);
449 91 ry += r->slice_height_in_ctus[i++];
450 }
451 61 i--;
452 61 return i;
453 }
454
455 17 static void pps_multi_tiles_slice(VVCPPS *pps, const int tile_idx, const int i, int *off)
456 {
457 17 const H266RawPPS *r = pps->r;
458 int rx, ry, tile_x, tile_y;
459
460 17 tile_xy(&tile_x, &tile_y, tile_idx, pps);
461 17 pps->slice_start_offset[i] = *off;
462 17 pps->num_ctus_in_slice[i] = 0;
463
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 48 for (int ty = tile_y; ty <= tile_y + r->pps_slice_height_in_tiles_minus1[i]; ty++) {
464
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 106 for (int tx = tile_x; tx <= tile_x + r->pps_slice_width_in_tiles_minus1[i]; tx++) {
465 75 ctu_xy(&rx, &ry, tx, ty, pps);
466 75 pps->num_ctus_in_slice[i] += pps_add_ctus(pps, off, rx, ry,
467 75 r->col_width_val[tx], r->row_height_val[ty]);
468 }
469 }
470 17 }
471
472 11 static void pps_rect_slice(VVCPPS *pps, const VVCSPS *sps)
473 {
474 11 const H266RawPPS *r = pps->r;
475 11 int tile_idx = 0, off = 0;
476
477
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 11 if (r->pps_single_slice_per_subpic_flag) {
478 2 pps_single_slice_per_subpic(pps, sps, &off);
479 2 return;
480 }
481
482
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 87 for (int i = 0; i < r->pps_num_slices_in_pic_minus1 + 1; i++) {
483
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 78 if (!r->pps_slice_width_in_tiles_minus1[i] &&
484
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 66 !r->pps_slice_height_in_tiles_minus1[i]) {
485 61 i = pps_one_tile_slices(pps, tile_idx, i, &off);
486 } else {
487 17 pps_multi_tiles_slice(pps, tile_idx, i, &off);
488 }
489 78 tile_idx = next_tile_idx(tile_idx, i, r);
490 }
491 }
492
493 121 static void pps_no_rect_slice(VVCPPS* pps)
494 {
495 121 const H266RawPPS* r = pps->r;
496 121 int rx, ry, off = 0;
497
498
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 250 for (int tile_y = 0; tile_y < r->num_tile_rows; tile_y++) {
499
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 298 for (int tile_x = 0; tile_x < r->num_tile_columns; tile_x++) {
500 169 ctu_xy(&rx, &ry, tile_x, tile_y, pps);
501 169 pps_add_ctus(pps, &off, rx, ry, r->col_width_val[tile_x], r->row_height_val[tile_y]);
502 }
503 }
504 121 }
505
506 132 static int pps_slice_map(VVCPPS *pps, const VVCSPS *sps)
507 {
508 132 pps->ctb_addr_in_slice = av_calloc(pps->ctb_count, sizeof(*pps->ctb_addr_in_slice));
509
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 132 if (!pps->ctb_addr_in_slice)
510 ✗ return AVERROR(ENOMEM);
511
512
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 132 if (pps->r->pps_rect_slice_flag)
513 11 pps_rect_slice(pps, sps);
514 else
515 121 pps_no_rect_slice(pps);
516
517 132 return 0;
518 }
519
520 132 static void pps_ref_wraparound_offset(VVCPPS *pps, const VVCSPS *sps)
521 {
522 132 const H266RawPPS *r = pps->r;
523
524
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 132 if (r->pps_ref_wraparound_enabled_flag)
525 2 pps->ref_wraparound_offset = (pps->width / sps->min_cb_size_y) - r->pps_pic_width_minus_wraparound_offset;
526 132 }
527
528 132 static void pps_subpic(VVCPPS *pps, const VVCSPS *sps)
529 {
530 132 const H266RawSPS *rsps = sps->r;
531
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 298 for (int i = 0; i < rsps->sps_num_subpics_minus1 + 1; i++) {
532
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 166 if (rsps->sps_subpic_treated_as_pic_flag[i]) {
533 41 pps->subpic_x[i] = rsps->sps_subpic_ctu_top_left_x[i] << sps->ctb_log2_size_y;
534 41 pps->subpic_y[i] = rsps->sps_subpic_ctu_top_left_y[i] << sps->ctb_log2_size_y;
535 41 pps->subpic_width[i] = FFMIN(pps->width - pps->subpic_x[i], (rsps->sps_subpic_width_minus1[i] + 1) << sps->ctb_log2_size_y);
536 41 pps->subpic_height[i] = FFMIN(pps->height - pps->subpic_y[i], (rsps->sps_subpic_height_minus1[i] + 1) << sps->ctb_log2_size_y);
537 } else {
538 125 pps->subpic_x[i] = 0;
539 125 pps->subpic_y[i] = 0;
540 125 pps->subpic_width[i] = pps->width;
541 125 pps->subpic_height[i] = pps->height;
542 }
543 }
544 132 }
545
546 132 static int pps_derive(VVCPPS *pps, const VVCSPS *sps)
547 {
548 int ret;
549
550 132 pps_chroma_qp_offset(pps);
551 132 pps_width_height(pps, sps);
552
553 132 ret = pps_bd(pps);
554
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 132 if (ret < 0)
555 ✗ return ret;
556
557 132 ret = pps_slice_map(pps, sps);
558
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 132 if (ret < 0)
559 ✗ return ret;
560
561 132 pps_ref_wraparound_offset(pps, sps);
562 132 pps_subpic(pps, sps);
563
564 132 return 0;
565 }
566
567 132 static void pps_free(FFRefStructOpaque opaque, void *obj)
568 {
569 132 VVCPPS *pps = obj;
570
571 132 ff_refstruct_unref(&pps->r);
572
573 132 av_freep(&pps->col_bd);
574 132 av_freep(&pps->row_bd);
575 132 av_freep(&pps->ctb_to_col_bd);
576 132 av_freep(&pps->ctb_to_row_bd);
577 132 av_freep(&pps->ctb_addr_in_slice);
578 132 }
579
580 132 static const VVCPPS *pps_alloc(const H266RawPPS *rpps, const VVCSPS *sps)
581 {
582 int ret;
583 132 VVCPPS *pps = ff_refstruct_alloc_ext(sizeof(*pps), 0, NULL, pps_free);
584
585
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 132 if (!pps)
586 ✗ return NULL;
587
588 132 ff_refstruct_replace(&pps->r, rpps);
589
590 132 ret = pps_derive(pps, sps);
591
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 132 if (ret < 0)
592 ✗ goto fail;
593
594 132 return pps;
595
596 ✗ fail:
597 ✗ ff_refstruct_unref(&pps);
598 ✗ return NULL;
599 }
600
601 872 static int decode_pps(VVCParamSets *ps, const H266RawPPS *rpps)
602 {
603 872 int ret = 0;
604 872 const int pps_id = rpps->pps_pic_parameter_set_id;
605 872 const int sps_id = rpps->pps_seq_parameter_set_id;
606 872 const VVCPPS *old_pps = ps->pps_list[pps_id];
607 const VVCPPS *pps;
608
609
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 872 if (old_pps && old_pps->r == rpps)
610 740 return 0;
611
612 132 pps = pps_alloc(rpps, ps->sps_list[sps_id]);
613
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 132 if (!pps)
614 ✗ return AVERROR(ENOMEM);
615
616 132 ff_refstruct_unref(&ps->pps_list[pps_id]);
617 132 ps->pps_list[pps_id] = pps;
618
619 132 return ret;
620 }
621
622 872 static int decode_ps(VVCParamSets *ps, const CodedBitstreamH266Context *h266, void *log_ctx, int is_clvss)
623 {
624 872 const H266RawPictureHeader *ph = h266->ph;
625 const H266RawPPS *rpps;
626 const H266RawSPS *rsps;
627 int ret;
628
629
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 872 if (!ph)
630 ✗ return AVERROR_INVALIDDATA;
631
632 872 rpps = h266->pps[ph->ph_pic_parameter_set_id];
633
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 872 if (!rpps)
634 ✗ return AVERROR_INVALIDDATA;
635
636 872 rsps = h266->sps[rpps->pps_seq_parameter_set_id];
637
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 872 if (!rsps)
638 ✗ return AVERROR_INVALIDDATA;
639
640 872 ret = decode_sps(ps, rsps, log_ctx, is_clvss);
641
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 872 if (ret < 0)
642 ✗ return ret;
643
644 872 ret = decode_pps(ps, rpps);
645
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 872 if (ret < 0)
646 ✗ return ret;
647
648 872 return 0;
649 }
650
651 #define WEIGHT_TABLE(x) \
652 w->nb_weights[L##x] = r->num_weights_l##x; \
653 for (int i = 0; i < w->nb_weights[L##x]; i++) { \
654 w->weight_flag[L##x][LUMA][i] = r->luma_weight_l##x##_flag[i]; \
655 w->weight_flag[L##x][CHROMA][i] = r->chroma_weight_l##x##_flag[i]; \
656 w->weight[L##x][LUMA][i] = denom[LUMA] + r->delta_luma_weight_l##x[i]; \
657 w->offset[L##x][LUMA][i] = r->luma_offset_l##x[i]; \
658 for (int j = CB; j <= CR; j++) { \
659 w->weight[L##x][j][i] = denom[CHROMA] + r->delta_chroma_weight_l##x[i][j - 1]; \
660 w->offset[L##x][j][i] = 128 + r->delta_chroma_offset_l##x[i][j - 1]; \
661 w->offset[L##x][j][i] -= (128 * w->weight[L##x][j][i]) >> w->log2_denom[CHROMA]; \
662 w->offset[L##x][j][i] = av_clip_intp2(w->offset[L##x][j][i], 7); \
663 } \
664 } \
665
666 16 static void pred_weight_table(PredWeightTable *w, const H266RawPredWeightTable *r)
667 {
668 int denom[2];
669
670 16 w->log2_denom[LUMA] = r->luma_log2_weight_denom;
671 16 w->log2_denom[CHROMA] = w->log2_denom[LUMA] + r->delta_chroma_log2_weight_denom;
672 16 denom[LUMA] = 1 << w->log2_denom[LUMA];
673 16 denom[CHROMA] = 1 << w->log2_denom[CHROMA];
674
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 109 WEIGHT_TABLE(0)
675
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 109 WEIGHT_TABLE(1)
676 16 }
677
678 // 8.3.1 Decoding process for picture order count
679 872 static int ph_compute_poc(const H266RawPictureHeader *ph, const H266RawSPS *sps, const int poc_tid0, const int is_clvss)
680 {
681 872 const int max_poc_lsb = 1 << (sps->sps_log2_max_pic_order_cnt_lsb_minus4 + 4);
682 872 const int prev_poc_lsb = poc_tid0 % max_poc_lsb;
683 872 const int prev_poc_msb = poc_tid0 - prev_poc_lsb;
684 872 const int poc_lsb = ph->ph_pic_order_cnt_lsb;
685 int poc_msb;
686
687
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 872 if (ph->ph_poc_msb_cycle_present_flag) {
688 ✗ poc_msb = ph->ph_poc_msb_cycle_val * max_poc_lsb;
689
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 872 } else if (is_clvss) {
690 63 poc_msb = 0;
691 } else {
692
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 809 if (poc_lsb < prev_poc_lsb && prev_poc_lsb - poc_lsb >= max_poc_lsb / 2)
693 ✗ poc_msb = prev_poc_msb + max_poc_lsb;
694
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 809 else if (poc_lsb > prev_poc_lsb && poc_lsb - prev_poc_lsb > max_poc_lsb / 2)
695 ✗ poc_msb = prev_poc_msb - max_poc_lsb;
696 else
697 809 poc_msb = prev_poc_msb;
698 }
699
700 872 return poc_msb + poc_lsb;
701 }
702
703 673792 static av_always_inline uint16_t lmcs_derive_lut_sample(uint16_t sample,
704 uint16_t *pivot1, uint16_t *pivot2, uint16_t *scale_coeff, const int idx, const int max)
705 {
706 673792 const int lut_sample =
707 673792 pivot1[idx] + ((scale_coeff[idx] * (sample - pivot2[idx]) + (1<< 10)) >> 11);
708 673792 return av_clip(lut_sample, 0, max - 1);
709 }
710
711 //8.8.2.2 Inverse mapping process for a luma sample
712 329 static int lmcs_derive_lut(VVCLMCS *lmcs, const H266RawAPS *rlmcs, const H266RawSPS *sps)
713 {
714 329 const int bit_depth = (sps->sps_bitdepth_minus8 + 8);
715 329 const int max = (1 << bit_depth);
716 329 const int org_cw = max / LMCS_MAX_BIN_SIZE;
717 329 const int shift = av_log2(org_cw);
718 329 const int off = 1 << (shift - 1);
719 int cw[LMCS_MAX_BIN_SIZE];
720 uint16_t input_pivot[LMCS_MAX_BIN_SIZE];
721 uint16_t scale_coeff[LMCS_MAX_BIN_SIZE];
722 uint16_t inv_scale_coeff[LMCS_MAX_BIN_SIZE];
723 int i, delta_crs;
724
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 329 if (bit_depth > LMCS_MAX_BIT_DEPTH)
725 ✗ return AVERROR_PATCHWELCOME;
726
727
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 329 if (!rlmcs)
728 ✗ return AVERROR_INVALIDDATA;
729
730 329 lmcs->min_bin_idx = rlmcs->lmcs_min_bin_idx;
731 329 lmcs->max_bin_idx = LMCS_MAX_BIN_SIZE - 1 - rlmcs->lmcs_min_bin_idx;
732
733 329 memset(cw, 0, sizeof(cw));
734
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 4869 for (int i = lmcs->min_bin_idx; i <= lmcs->max_bin_idx; i++)
735 4540 cw[i] = org_cw + (1 - 2 * rlmcs->lmcs_delta_sign_cw_flag[i]) * rlmcs->lmcs_delta_abs_cw[i];
736
737 329 delta_crs = (1 - 2 * rlmcs->lmcs_delta_sign_crs_flag) * rlmcs->lmcs_delta_abs_crs;
738
739 329 lmcs->pivot[0] = 0;
740
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 5593 for (i = 0; i < LMCS_MAX_BIN_SIZE; i++) {
741 5264 input_pivot[i] = i * org_cw;
742 5264 lmcs->pivot[i + 1] = lmcs->pivot[i] + cw[i];
743 5264 scale_coeff[i] = (cw[i] * (1 << 11) + off) >> shift;
744
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 5264 if (cw[i] == 0) {
745 724 inv_scale_coeff[i] = 0;
746 724 lmcs->chroma_scale_coeff[i] = (1 << 11);
747 } else {
748 4540 inv_scale_coeff[i] = org_cw * (1 << 11) / cw[i];
749 4540 lmcs->chroma_scale_coeff[i] = org_cw * (1 << 11) / (cw[i] + delta_crs);
750 }
751 }
752
753 //derive lmcs_fwd_lut
754
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 337225 for (uint16_t sample = 0; sample < max; sample++) {
755 336896 const int idx_y = sample / org_cw;
756 336896 const uint16_t fwd_sample = lmcs_derive_lut_sample(sample, lmcs->pivot,
757 input_pivot, scale_coeff, idx_y, max);
758
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 336896 if (bit_depth > 8)
759 336896 lmcs->fwd_lut.u16[sample] = fwd_sample;
760 else
761 ✗ lmcs->fwd_lut.u8 [sample] = fwd_sample;
762
763 }
764
765 //derive lmcs_inv_lut
766 329 i = lmcs->min_bin_idx;
767
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 337225 for (uint16_t sample = 0; sample < max; sample++) {
768 uint16_t inv_sample;
769
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 341436 while (i <= lmcs->max_bin_idx && sample >= lmcs->pivot[i + 1])
770 4540 i++;
771
772 336896 inv_sample = lmcs_derive_lut_sample(sample, input_pivot, lmcs->pivot,
773 inv_scale_coeff, i, max);
774
775
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 336896 if (bit_depth > 8)
776 336896 lmcs->inv_lut.u16[sample] = inv_sample;
777 else
778 ✗ lmcs->inv_lut.u8 [sample] = inv_sample;
779 }
780
781 329 return 0;
782 }
783
784 872 static int ph_max_num_subblock_merge_cand(const H266RawSPS *sps, const H266RawPictureHeader *ph)
785 {
786
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 872 if (sps->sps_affine_enabled_flag)
787 869 return 5 - sps->sps_five_minus_max_num_subblock_merge_cand;
788
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 3 return sps->sps_sbtmvp_enabled_flag && ph->ph_temporal_mvp_enabled_flag;
789 }
790
791 872 static int ph_derive(VVCPH *ph, const H266RawSPS *sps, const H266RawPPS *pps, const int poc_tid0, const int is_clvss)
792 {
793 872 ph->max_num_subblock_merge_cand = ph_max_num_subblock_merge_cand(sps, ph->r);
794
795 872 ph->poc = ph_compute_poc(ph->r, sps, poc_tid0, is_clvss);
796
797
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 872 if (pps->pps_wp_info_in_ph_flag)
798 ✗ pred_weight_table(&ph->pwt, &ph->r->ph_pred_weight_table);
799
800 872 return 0;
801 }
802
803 872 static int decode_ph(VVCFrameParamSets *fps, const H266RawPictureHeader *rph, void *rph_ref,
804 const int poc_tid0, const int is_clvss)
805 {
806 int ret;
807 872 VVCPH *ph = &fps->ph;
808 872 const H266RawSPS *sps = fps->sps->r;
809 872 const H266RawPPS *pps = fps->pps->r;
810
811 872 ph->r = rph;
812 872 ff_refstruct_replace(&ph->rref, rph_ref);
813 872 ret = ph_derive(ph, sps, pps, poc_tid0, is_clvss);
814
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 872 if (ret < 0)
815 ✗ return ret;
816
817 872 return 0;
818 }
819
820 872 static int decode_frame_ps(VVCFrameParamSets *fps, const VVCParamSets *ps,
821 const CodedBitstreamH266Context *h266, const int poc_tid0, const int is_clvss)
822 {
823 872 const H266RawPictureHeader *ph = h266->ph;
824 const H266RawPPS *rpps;
825 int ret;
826
827
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 872 if (!ph)
828 ✗ return AVERROR_INVALIDDATA;
829
830 872 rpps = h266->pps[ph->ph_pic_parameter_set_id];
831
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 872 if (!rpps)
832 ✗ return AVERROR_INVALIDDATA;
833
834 872 ff_refstruct_replace(&fps->sps, ps->sps_list[rpps->pps_seq_parameter_set_id]);
835 872 ff_refstruct_replace(&fps->pps, ps->pps_list[rpps->pps_pic_parameter_set_id]);
836
837 872 ret = decode_ph(fps, ph, h266->ph_ref, poc_tid0, is_clvss);
838
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 872 if (ret < 0)
839 ✗ return ret;
840
841
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 872 if (ph->ph_explicit_scaling_list_enabled_flag)
842 114 ff_refstruct_replace(&fps->sl, ps->scaling_list[ph->ph_scaling_list_aps_id]);
843
844
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 872 if (ph->ph_lmcs_enabled_flag) {
845 329 ret = lmcs_derive_lut(&fps->lmcs, ps->lmcs_list[ph->ph_lmcs_aps_id], fps->sps->r);
846
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 329 if (ret < 0)
847 ✗ return ret;
848 }
849
850
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 7848 for (int i = 0; i < FF_ARRAY_ELEMS(fps->alf_list); i++)
851 6976 ff_refstruct_replace(&fps->alf_list[i], ps->alf_list[i]);
852
853 872 return 0;
854 }
855
856 872 static void decode_recovery_flag(VVCContext *s)
857 {
858
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 872 if (IS_IDR(s))
859 59 s->no_output_before_recovery_flag = 1;
860
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 813 else if (IS_CRA(s) || IS_GDR(s))
861 12 s->no_output_before_recovery_flag = s->last_eos;
862 872 }
863
864 872 static void decode_recovery_poc(VVCContext *s, const VVCPH *ph)
865 {
866
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 872 if (s->no_output_before_recovery_flag) {
867
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 687 if (IS_GDR(s))
868 2 s->gdr_recovery_point_poc = ph->poc + ph->r->ph_recovery_poc_cnt;
869
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 687 if (!GDR_IS_RECOVERED(s) && s->gdr_recovery_point_poc <= ph->poc)
870 2 GDR_SET_RECOVERED(s);
871 }
872 872 }
873
874 872 int ff_vvc_decode_frame_ps(VVCFrameParamSets *fps, struct VVCContext *s)
875 {
876 872 int ret = 0;
877 872 VVCParamSets *ps = &s->ps;
878 872 const CodedBitstreamH266Context *h266 = s->cbc->priv_data;
879 int is_clvss;
880
881 872 decode_recovery_flag(s);
882
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 872 is_clvss = IS_CLVSS(s);
883
884 872 ret = decode_ps(ps, h266, s->avctx, is_clvss);
885
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 872 if (ret < 0)
886 ✗ return ret;
887
888 872 ret = decode_frame_ps(fps, ps, h266, s->poc_tid0, is_clvss);
889 872 decode_recovery_poc(s, &fps->ph);
890 872 return ret;
891 }
892
893 400 void ff_vvc_frame_ps_free(VVCFrameParamSets *fps)
894 {
895 400 ff_refstruct_unref(&fps->sps);
896 400 ff_refstruct_unref(&fps->pps);
897 400 ff_refstruct_unref(&fps->ph.rref);
898 400 ff_refstruct_unref(&fps->sl);
899
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 3600 for (int i = 0; i < FF_ARRAY_ELEMS(fps->alf_list); i++)
900 3200 ff_refstruct_unref(&fps->alf_list[i]);
901 400 }
902
903 50 void ff_vvc_ps_uninit(VVCParamSets *ps)
904 {
905
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 450 for (int i = 0; i < FF_ARRAY_ELEMS(ps->scaling_list); i++)
906 400 ff_refstruct_unref(&ps->scaling_list[i]);
907
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 250 for (int i = 0; i < FF_ARRAY_ELEMS(ps->lmcs_list); i++)
908 200 ff_refstruct_unref(&ps->lmcs_list[i]);
909
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 450 for (int i = 0; i < FF_ARRAY_ELEMS(ps->alf_list); i++)
910 400 ff_refstruct_unref(&ps->alf_list[i]);
911
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 850 for (int i = 0; i < FF_ARRAY_ELEMS(ps->sps_list); i++)
912 800 ff_refstruct_unref(&ps->sps_list[i]);
913
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 3250 for (int i = 0; i < FF_ARRAY_ELEMS(ps->pps_list); i++)
914 3200 ff_refstruct_unref(&ps->pps_list[i]);
915 50 }
916
917 4212 static void alf_coeff(int16_t *coeff,
918 const uint8_t *abs, const uint8_t *sign, const int size)
919 {
920
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 52884 for (int i = 0; i < size; i++)
921 48672 coeff[i] = (1 - 2 * sign[i]) * abs[i];
922 4212 }
923
924 379 static void alf_coeff_cc(int16_t *coeff,
925 const uint8_t *mapped_abs, const uint8_t *sign)
926 {
927
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 3032 for (int i = 0; i < ALF_NUM_COEFF_CC; i++) {
928 2653 int c = mapped_abs[i];
929
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 2653 if (c)
930 2250 c = (1 - 2 * sign[i]) * (1 << (c - 1));
931 2653 coeff[i] = c;
932 }
933 379 }
934
935 202 static void alf_luma(VVCALF *alf, const H266RawAPS *aps)
936 {
937
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 202 if (!aps->alf_luma_filter_signal_flag)
938 46 return;
939
940
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 4056 for (int i = 0; i < ALF_NUM_FILTERS_LUMA; i++) {
941 3900 const int ref = aps->alf_luma_coeff_delta_idx[i];
942 3900 const uint8_t *abs = aps->alf_luma_coeff_abs[ref];
943 3900 const uint8_t *sign = aps->alf_luma_coeff_sign[ref];
944
945 3900 alf_coeff(alf->luma_coeff[i], abs, sign, ALF_NUM_COEFF_LUMA);
946 3900 memcpy(alf->luma_clip_idx[i], aps->alf_luma_clip_idx[ref],
947 sizeof(alf->luma_clip_idx[i]));
948 }
949 }
950
951 202 static void alf_chroma(VVCALF *alf, const H266RawAPS *aps)
952 {
953
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 202 if (!aps->alf_chroma_filter_signal_flag)
954 82 return;
955
956 120 alf->num_chroma_filters = aps->alf_chroma_num_alt_filters_minus1 + 1;
957
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 432 for (int i = 0; i < alf->num_chroma_filters; i++) {
958 312 const uint8_t *abs = aps->alf_chroma_coeff_abs[i];
959 312 const uint8_t *sign = aps->alf_chroma_coeff_sign[i];
960
961 312 alf_coeff(alf->chroma_coeff[i], abs, sign, ALF_NUM_COEFF_CHROMA);
962 312 memcpy(alf->chroma_clip_idx[i], aps->alf_chroma_clip_idx[i],
963 sizeof(alf->chroma_clip_idx[i]));
964 }
965 }
966
967 202 static void alf_cc(VVCALF *alf, const H266RawAPS *aps)
968 {
969 202 const uint8_t (*abs[])[ALF_NUM_COEFF_CC] =
970 202 { aps->alf_cc_cb_mapped_coeff_abs, aps->alf_cc_cr_mapped_coeff_abs };
971 202 const uint8_t (*sign[])[ALF_NUM_COEFF_CC] =
972 202 {aps->alf_cc_cb_coeff_sign, aps->alf_cc_cr_coeff_sign };
973 202 const int signaled[] = { aps->alf_cc_cb_filter_signal_flag, aps->alf_cc_cr_filter_signal_flag};
974
975 202 alf->num_cc_filters[0] = aps->alf_cc_cb_filters_signalled_minus1 + 1;
976 202 alf->num_cc_filters[1] = aps->alf_cc_cr_filters_signalled_minus1 + 1;
977
978
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 606 for (int idx = 0; idx < 2; idx++) {
979
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 404 if (signaled[idx]) {
980
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 483 for (int i = 0; i < alf->num_cc_filters[idx]; i++)
981 379 alf_coeff_cc(alf->cc_coeff[idx][i], abs[idx][i], sign[idx][i]);
982 }
983 }
984 202 }
985
986 202 static void alf_derive(VVCALF *alf, const H266RawAPS *aps)
987 {
988 202 alf_luma(alf, aps);
989 202 alf_chroma(alf, aps);
990 202 alf_cc(alf, aps);
991 202 }
992
993 202 static int aps_decode_alf(const VVCALF **alf, const H266RawAPS *aps)
994 {
995 202 VVCALF *a = ff_refstruct_allocz(sizeof(*a));
996
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 202 if (!a)
997 ✗ return AVERROR(ENOMEM);
998
999 202 alf_derive(a, aps);
1000 202 ff_refstruct_replace(alf, a);
1001 202 ff_refstruct_unref(&a);
1002
1003 202 return 0;
1004 }
1005
1006 252 static int is_luma_list(const int id)
1007 {
1008
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 252 return id % VVC_MAX_SAMPLE_ARRAYS == SL_START_4x4 || id == SL_START_64x64 + 1;
1009 }
1010
1011 336 static int derive_matrix_size(const int id)
1012 {
1013
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 336 return id < SL_START_4x4 ? 2 : (id < SL_START_8x8 ? 4 : 8);
1014 }
1015
1016 // 7.4.3.20 Scaling list data semantics
1017 12 static void scaling_derive(VVCScalingList *sl, const H266RawAPS *aps)
1018 {
1019
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 348 for (int id = 0; id < SL_MAX_ID; id++) {
1020 336 const int matrix_size = derive_matrix_size(id);
1021 336 const int log2_size = av_log2(matrix_size);
1022 336 const int list_size = matrix_size * matrix_size;
1023 int coeff[SL_MAX_MATRIX_SIZE * SL_MAX_MATRIX_SIZE];
1024 const uint8_t *pred;
1025 const int *scaling_list;
1026 336 int dc = 0;
1027
1028
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 336 if (aps->aps_chroma_present_flag || is_luma_list(id)) {
1029
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 174 if (!aps->scaling_list_copy_mode_flag[id]) {
1030 57 int next_coef = 0;
1031
1032
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 57 if (id >= SL_START_16x16)
1033 8 dc = next_coef = aps->scaling_list_dc_coef[id - SL_START_16x16];
1034
1035
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 2469 for (int i = 0; i < list_size; i++) {
1036 2412 const int x = ff_vvc_diag_scan_x[3][3][i];
1037 2412 const int y = ff_vvc_diag_scan_y[3][3][i];
1038
1039
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 2412 if (!(id >= SL_START_64x64 && x >= 4 && y >= 4))
1040 2380 next_coef += aps->scaling_list_delta_coef[id][i];
1041 2412 coeff[i] = next_coef;
1042 }
1043 }
1044 }
1045
1046 //dc
1047
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 336 if (id >= SL_START_16x16) {
1048
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 168 if (!aps->scaling_list_copy_mode_flag[id] && !aps->scaling_list_pred_mode_flag[id]) {
1049 ✗ sl->scaling_matrix_dc_rec[id - SL_START_16x16] = 8;
1050
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 168 } else if (!aps->scaling_list_pred_id_delta[id]) {
1051 72 sl->scaling_matrix_dc_rec[id - SL_START_16x16] = 16;
1052 } else {
1053 96 const int ref_id = id - aps->scaling_list_pred_id_delta[id];
1054
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 96 if (ref_id >= SL_START_16x16)
1055 70 dc += sl->scaling_matrix_dc_rec[ref_id - SL_START_16x16];
1056 else
1057 26 dc += sl->scaling_matrix_rec[ref_id][0];
1058 96 sl->scaling_matrix_dc_rec[id - SL_START_16x16] = dc & 255;
1059 }
1060 }
1061
1062 //ac
1063
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 336 scaling_list = aps->scaling_list_copy_mode_flag[id] ? ff_vvc_scaling_list0 : coeff;
1064
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 336 if (!aps->scaling_list_copy_mode_flag[id] && !aps->scaling_list_pred_mode_flag[id])
1065 27 pred = ff_vvc_scaling_pred_8;
1066
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 309 else if (!aps->scaling_list_pred_id_delta[id])
1067 170 pred = ff_vvc_scaling_pred_16;
1068 else
1069 139 pred = sl->scaling_matrix_rec[id - aps->scaling_list_pred_id_delta[id]];
1070
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 16944 for (int i = 0; i < list_size; i++) {
1071 16608 const int x = ff_vvc_diag_scan_x[log2_size][log2_size][i];
1072 16608 const int y = ff_vvc_diag_scan_y[log2_size][log2_size][i];
1073 16608 const int off = y * matrix_size + x;
1074 16608 sl->scaling_matrix_rec[id][off] = (pred[off] + scaling_list[i]) & 255;
1075 }
1076 }
1077 12 }
1078
1079 12 static int aps_decode_scaling(const VVCScalingList **scaling, const H266RawAPS *aps)
1080 {
1081 12 VVCScalingList *sl = ff_refstruct_allocz(sizeof(*sl));
1082
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 12 if (!sl)
1083 ✗ return AVERROR(ENOMEM);
1084
1085 12 scaling_derive(sl, aps);
1086 12 ff_refstruct_replace(scaling, sl);
1087 12 ff_refstruct_unref(&sl);
1088
1089 12 return 0;
1090 }
1091
1092 267 int ff_vvc_decode_aps(VVCParamSets *ps, const CodedBitstreamUnit *unit)
1093 {
1094 267 const H266RawAPS *aps = unit->content_ref;
1095 267 int ret = 0;
1096
1097
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 267 if (!aps)
1098 ✗ return AVERROR_INVALIDDATA;
1099
1100
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 267 switch (aps->aps_params_type) {
1101 202 case VVC_ASP_TYPE_ALF:
1102 202 ret = aps_decode_alf(&ps->alf_list[aps->aps_adaptation_parameter_set_id], aps);
1103 202 break;
1104 53 case VVC_ASP_TYPE_LMCS:
1105 53 ff_refstruct_replace(&ps->lmcs_list[aps->aps_adaptation_parameter_set_id], aps);
1106 53 break;
1107 12 case VVC_ASP_TYPE_SCALING:
1108 12 ret = aps_decode_scaling(&ps->scaling_list[aps->aps_adaptation_parameter_set_id], aps);
1109 12 break;
1110 }
1111
1112 267 return ret;
1113 }
1114
1115 1578 static int sh_alf_aps(const VVCSH *sh, const VVCFrameParamSets *fps)
1116 {
1117
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 1578 if (!sh->r->sh_alf_enabled_flag)
1118 321 return 0;
1119
1120
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 2666 for (int i = 0; i < sh->r->sh_num_alf_aps_ids_luma; i++) {
1121 1409 const VVCALF *alf_aps_luma = fps->alf_list[sh->r->sh_alf_aps_id_luma[i]];
1122
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 1409 if (!alf_aps_luma)
1123 ✗ return AVERROR_INVALIDDATA;
1124 }
1125
1126
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 1257 if (sh->r->sh_alf_cb_enabled_flag || sh->r->sh_alf_cr_enabled_flag) {
1127 696 const VVCALF *alf_aps_chroma = fps->alf_list[sh->r->sh_alf_aps_id_chroma];
1128
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 696 if (!alf_aps_chroma)
1129 ✗ return AVERROR_INVALIDDATA;
1130 }
1131
1132
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 1257 if (fps->sps->r->sps_ccalf_enabled_flag) {
1133
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 1199 if (sh->r->sh_alf_cc_cb_enabled_flag) {
1134 155 const VVCALF *alf_aps_cc_cr = fps->alf_list[sh->r->sh_alf_cc_cb_aps_id];
1135
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 155 if (!alf_aps_cc_cr)
1136 ✗ return AVERROR_INVALIDDATA;
1137 }
1138
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 1199 if (sh->r->sh_alf_cc_cr_enabled_flag) {
1139 130 const VVCALF *alf_aps_cc_cr = fps->alf_list[sh->r->sh_alf_cc_cr_aps_id];
1140
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 130 if (!alf_aps_cc_cr)
1141 ✗ return AVERROR_INVALIDDATA;
1142 }
1143 }
1144
1145 1257 return 0;
1146 }
1147
1148 1578 static void sh_slice_address(VVCSH *sh, const H266RawSPS *sps, const VVCPPS *pps)
1149 {
1150 1578 const int slice_address = sh->r->sh_slice_address;
1151
1152
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 1578 if (pps->r->pps_rect_slice_flag) {
1153 600 int pic_level_slice_idx = slice_address;
1154
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 1574 for (int j = 0; j < sh->r->curr_subpic_idx; j++)
1155 974 pic_level_slice_idx += pps->r->num_slices_in_subpic[j];
1156 600 sh->ctb_addr_in_curr_slice = pps->ctb_addr_in_slice + pps->slice_start_offset[pic_level_slice_idx];
1157 600 sh->num_ctus_in_curr_slice = pps->num_ctus_in_slice[pic_level_slice_idx];
1158 } else {
1159 978 int tile_x = slice_address % pps->r->num_tile_columns;
1160 978 int tile_y = slice_address / pps->r->num_tile_columns;
1161 978 const int slice_start_ctb = pps->row_bd[tile_y] * pps->ctb_width + pps->col_bd[tile_x] * pps->r->row_height_val[tile_y];
1162
1163 978 sh->ctb_addr_in_curr_slice = pps->ctb_addr_in_slice + slice_start_ctb;
1164
1165 978 sh->num_ctus_in_curr_slice = 0;
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 2036 for (int tile_idx = slice_address; tile_idx <= slice_address + sh->r->sh_num_tiles_in_slice_minus1; tile_idx++) {
1167 1058 tile_x = tile_idx % pps->r->num_tile_columns;
1168 1058 tile_y = tile_idx / pps->r->num_tile_columns;
1169 1058 sh->num_ctus_in_curr_slice += pps->r->row_height_val[tile_y] * pps->r->col_width_val[tile_x];
1170 }
1171 }
1172 1578 }
1173
1174 1578 static void sh_qp_y(VVCSH *sh, const H266RawPPS *pps, const H266RawPictureHeader *ph)
1175 {
1176 1578 const int init_qp = pps->pps_init_qp_minus26 + 26;
1177
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 1578 if (!pps->pps_qp_delta_info_in_ph_flag)
1179 1314 sh->slice_qp_y = init_qp + sh->r->sh_qp_delta;
1180 else
1181 264 sh->slice_qp_y = init_qp + ph->ph_qp_delta;
1182 1578 }
1183
1184 1578 static void sh_inter(VVCSH *sh, const H266RawSPS *sps, const H266RawPPS *pps)
1185 {
1186 1578 const H266RawSliceHeader *rsh = sh->r;
1187
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 1578 if (!pps->pps_wp_info_in_ph_flag &&
1189
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 1578 ((pps->pps_weighted_pred_flag && IS_P(rsh)) ||
1190
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 1578 (pps->pps_weighted_bipred_flag && IS_B(rsh))))
1191 16 pred_weight_table(&sh->pwt, &rsh->sh_pred_weight_table);
1192 1578 }
1193
1194 1578 static void sh_deblock_offsets(VVCSH *sh)
1195 {
1196 1578 const H266RawSliceHeader *r = sh->r;
1197
1198
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 1578 if (!r->sh_deblocking_filter_disabled_flag) {
1199 1578 sh->deblock.beta_offset[LUMA] = r->sh_luma_beta_offset_div2 * 2;
1200 1578 sh->deblock.tc_offset[LUMA] = r->sh_luma_tc_offset_div2 * 2;
1201 1578 sh->deblock.beta_offset[CB] = r->sh_cb_beta_offset_div2 * 2;
1202 1578 sh->deblock.tc_offset[CB] = r->sh_cb_tc_offset_div2 * 2;
1203 1578 sh->deblock.beta_offset[CR] = r->sh_cr_beta_offset_div2 * 2;
1204 1578 sh->deblock.tc_offset[CR] = r->sh_cr_tc_offset_div2 * 2;
1205 }
1206 1578 }
1207
1208 1578 static void sh_partition_constraints(VVCSH *sh, const H266RawSPS *sps, const H266RawPictureHeader *ph)
1209 {
1210 1578 const int min_cb_log2_size_y = sps->sps_log2_min_luma_coding_block_size_minus2 + 2;
1211 int min_qt_log2_size_y[2];
1212
1213
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 1578 if (IS_I(sh->r)) {
1214 216 min_qt_log2_size_y[LUMA] = (min_cb_log2_size_y + ph->ph_log2_diff_min_qt_min_cb_intra_slice_luma);
1215 216 min_qt_log2_size_y[CHROMA] = (min_cb_log2_size_y + ph->ph_log2_diff_min_qt_min_cb_intra_slice_chroma);
1216
1217 216 sh->max_bt_size[LUMA] = 1 << (min_qt_log2_size_y[LUMA] + ph->ph_log2_diff_max_bt_min_qt_intra_slice_luma);
1218 216 sh->max_bt_size[CHROMA] = 1 << (min_qt_log2_size_y[CHROMA]+ ph->ph_log2_diff_max_bt_min_qt_intra_slice_chroma);
1219
1220 216 sh->max_tt_size[LUMA] = 1 << (min_qt_log2_size_y[LUMA] + ph->ph_log2_diff_max_tt_min_qt_intra_slice_luma);
1221 216 sh->max_tt_size[CHROMA] = 1 << (min_qt_log2_size_y[CHROMA]+ ph->ph_log2_diff_max_tt_min_qt_intra_slice_chroma);
1222
1223 216 sh->max_mtt_depth[LUMA] = ph->ph_max_mtt_hierarchy_depth_intra_slice_luma;
1224 216 sh->max_mtt_depth[CHROMA] = ph->ph_max_mtt_hierarchy_depth_intra_slice_chroma;
1225
1226 216 sh->cu_qp_delta_subdiv = ph->ph_cu_qp_delta_subdiv_intra_slice;
1227 216 sh->cu_chroma_qp_offset_subdiv = ph->ph_cu_chroma_qp_offset_subdiv_intra_slice;
1228 } else {
1229
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 4086 for (int i = LUMA; i <= CHROMA; i++) {
1230 2724 min_qt_log2_size_y[i] = (min_cb_log2_size_y + ph->ph_log2_diff_min_qt_min_cb_inter_slice);
1231 2724 sh->max_bt_size[i] = 1 << (min_qt_log2_size_y[i] + ph->ph_log2_diff_max_bt_min_qt_inter_slice);
1232 2724 sh->max_tt_size[i] = 1 << (min_qt_log2_size_y[i] + ph->ph_log2_diff_max_tt_min_qt_inter_slice);
1233 2724 sh->max_mtt_depth[i] = ph->ph_max_mtt_hierarchy_depth_inter_slice;
1234 }
1235
1236 1362 sh->cu_qp_delta_subdiv = ph->ph_cu_qp_delta_subdiv_inter_slice;
1237 1362 sh->cu_chroma_qp_offset_subdiv = ph->ph_cu_chroma_qp_offset_subdiv_inter_slice;
1238 }
1239
1240 1578 sh->min_qt_size[LUMA] = 1 << min_qt_log2_size_y[LUMA];
1241 1578 sh->min_qt_size[CHROMA] = 1 << min_qt_log2_size_y[CHROMA];
1242 1578 }
1243
1244 1578 static void sh_entry_points(VVCSH *sh, const H266RawSPS *sps, const VVCPPS *pps)
1245 {
1246
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 1578 if (sps->sps_entry_point_offsets_present_flag) {
1247
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 42891 for (int i = 1, j = 0; i < sh->num_ctus_in_curr_slice; i++) {
1248 41313 const int pre_ctb_addr_x = sh->ctb_addr_in_curr_slice[i - 1] % pps->ctb_width;
1249 41313 const int pre_ctb_addr_y = sh->ctb_addr_in_curr_slice[i - 1] / pps->ctb_width;
1250 41313 const int ctb_addr_x = sh->ctb_addr_in_curr_slice[i] % pps->ctb_width;
1251 41313 const int ctb_addr_y = sh->ctb_addr_in_curr_slice[i] / pps->ctb_width;
1252
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 41313 if (pps->ctb_to_row_bd[ctb_addr_y] != pps->ctb_to_row_bd[pre_ctb_addr_y] ||
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 41276 pps->ctb_to_col_bd[ctb_addr_x] != pps->ctb_to_col_bd[pre_ctb_addr_x] ||
1254
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 3126 (ctb_addr_y != pre_ctb_addr_y && sps->sps_entropy_coding_sync_enabled_flag)) {
1255 344 sh->entry_point_start_ctu[j++] = i;
1256 }
1257 }
1258 }
1259 1578 }
1260
1261 1578 static int sh_derive(VVCSH *sh, const VVCFrameParamSets *fps)
1262 {
1263 1578 const H266RawSPS *sps = fps->sps->r;
1264 1578 const H266RawPPS *pps = fps->pps->r;
1265 1578 const H266RawPictureHeader *ph = fps->ph.r;
1266 int ret;
1267
1268 1578 sh_slice_address(sh, sps, fps->pps);
1269 1578 ret = sh_alf_aps(sh, fps);
1270
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 1578 if (ret < 0)
1271 ✗ return ret;
1272 1578 sh_inter(sh, sps, pps);
1273 1578 sh_qp_y(sh, pps, ph);
1274 1578 sh_deblock_offsets(sh);
1275 1578 sh_partition_constraints(sh, sps, ph);
1276 1578 sh_entry_points(sh, sps, fps->pps);
1277
1278 1578 return 0;
1279 }
1280
1281 1578 int ff_vvc_decode_sh(VVCSH *sh, const VVCFrameParamSets *fps, const CodedBitstreamUnit *unit)
1282 {
1283 int ret;
1284
1285
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 1578 if (!fps->sps || !fps->pps)
1286 ✗ return AVERROR_INVALIDDATA;
1287
1288 1578 ff_refstruct_replace(&sh->r, unit->content_ref);
1289
1290 1578 ret = sh_derive(sh, fps);
1291
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 1578 if (ret < 0)
1292 ✗ return ret;
1293
1294 1578 return 0;
1295 }
1296