FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/vvc/cabac.c
Date: 2024-11-20 23:03:26
Exec Total Coverage
Lines: 965 990 97.5%
Functions: 122 126 96.8%
Branches: 647 684 94.6%
Line Branch Exec Source
1 /*
2 * VVC CABAC decoder
3 *
4 * Copyright (C) 2021 Nuo Mi
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22 #include "libavcodec/cabac_functions.h"
23
24 #include "cabac.h"
25 #include "ctu.h"
26 #include "data.h"
27
28 #define CABAC_MAX_BIN 31
29
30 #define CNU 35
31
32 enum SyntaxElement {
33 ALF_CTB_FLAG = 0,
34 ALF_USE_APS_FLAG = ALF_CTB_FLAG + 9,
35 ALF_CTB_CC_CB_IDC,
36 ALF_CTB_CC_CR_IDC = ALF_CTB_CC_CB_IDC + 3,
37 ALF_CTB_FILTER_ALT_IDX = ALF_CTB_CC_CR_IDC + 3,
38 SAO_MERGE_FLAG = ALF_CTB_FILTER_ALT_IDX + 2,
39 SAO_TYPE_IDX,
40 SPLIT_CU_FLAG,
41 SPLIT_QT_FLAG = SPLIT_CU_FLAG + 9,
42 MTT_SPLIT_CU_VERTICAL_FLAG = SPLIT_QT_FLAG + 6,
43 MTT_SPLIT_CU_BINARY_FLAG = MTT_SPLIT_CU_VERTICAL_FLAG + 5,
44 NON_INTER_FLAG = MTT_SPLIT_CU_BINARY_FLAG + 4,
45 CU_SKIP_FLAG = NON_INTER_FLAG + 2,
46 PRED_MODE_IBC_FLAG = CU_SKIP_FLAG + 3,
47 PRED_MODE_FLAG = PRED_MODE_IBC_FLAG + 3,
48 PRED_MODE_PLT_FLAG = PRED_MODE_FLAG + 2,
49 CU_ACT_ENABLED_FLAG,
50 INTRA_BDPCM_LUMA_FLAG,
51 INTRA_BDPCM_LUMA_DIR_FLAG,
52 INTRA_MIP_FLAG,
53 INTRA_LUMA_REF_IDX = INTRA_MIP_FLAG + 4,
54 INTRA_SUBPARTITIONS_MODE_FLAG = INTRA_LUMA_REF_IDX + 2,
55 INTRA_SUBPARTITIONS_SPLIT_FLAG,
56 INTRA_LUMA_MPM_FLAG,
57 INTRA_LUMA_NOT_PLANAR_FLAG,
58 INTRA_BDPCM_CHROMA_FLAG = INTRA_LUMA_NOT_PLANAR_FLAG + 2,
59 INTRA_BDPCM_CHROMA_DIR_FLAG,
60 CCLM_MODE_FLAG,
61 CCLM_MODE_IDX,
62 INTRA_CHROMA_PRED_MODE,
63 GENERAL_MERGE_FLAG,
64 INTER_PRED_IDC,
65 INTER_AFFINE_FLAG = INTER_PRED_IDC + 6,
66 CU_AFFINE_TYPE_FLAG = INTER_AFFINE_FLAG + 3,
67 SYM_MVD_FLAG,
68 REF_IDX_LX,
69 MVP_LX_FLAG = REF_IDX_LX + 2,
70 AMVR_FLAG,
71 AMVR_PRECISION_IDX = AMVR_FLAG + 2,
72 BCW_IDX = AMVR_PRECISION_IDX + 3,
73 CU_CODED_FLAG,
74 CU_SBT_FLAG,
75 CU_SBT_QUAD_FLAG = CU_SBT_FLAG + 2,
76 CU_SBT_HORIZONTAL_FLAG,
77 CU_SBT_POS_FLAG = CU_SBT_HORIZONTAL_FLAG + 3,
78 LFNST_IDX,
79 MTS_IDX = LFNST_IDX + 3,
80 COPY_ABOVE_PALETTE_INDICES_FLAG = MTS_IDX + 4,
81 PALETTE_TRANSPOSE_FLAG,
82 RUN_COPY_FLAG,
83 REGULAR_MERGE_FLAG = RUN_COPY_FLAG + 8,
84 MMVD_MERGE_FLAG = REGULAR_MERGE_FLAG + 2,
85 MMVD_CAND_FLAG,
86 MMVD_DISTANCE_IDX,
87 CIIP_FLAG,
88 MERGE_SUBBLOCK_FLAG,
89 MERGE_SUBBLOCK_IDX = MERGE_SUBBLOCK_FLAG + 3,
90 MERGE_IDX,
91 ABS_MVD_GREATER0_FLAG,
92 ABS_MVD_GREATER1_FLAG,
93 TU_Y_CODED_FLAG,
94 TU_CB_CODED_FLAG = TU_Y_CODED_FLAG + 4,
95 TU_CR_CODED_FLAG = TU_CB_CODED_FLAG + 2,
96 CU_QP_DELTA_ABS = TU_CR_CODED_FLAG + 3,
97 CU_CHROMA_QP_OFFSET_FLAG = CU_QP_DELTA_ABS + 2,
98 CU_CHROMA_QP_OFFSET_IDX,
99 TRANSFORM_SKIP_FLAG,
100 TU_JOINT_CBCR_RESIDUAL_FLAG = TRANSFORM_SKIP_FLAG + 2,
101 LAST_SIG_COEFF_X_PREFIX = TU_JOINT_CBCR_RESIDUAL_FLAG + 3,
102 LAST_SIG_COEFF_Y_PREFIX = LAST_SIG_COEFF_X_PREFIX +23,
103 SB_CODED_FLAG = LAST_SIG_COEFF_Y_PREFIX +23,
104 SIG_COEFF_FLAG = SB_CODED_FLAG + 7,
105 PAR_LEVEL_FLAG = SIG_COEFF_FLAG +63,
106 ABS_LEVEL_GTX_FLAG = PAR_LEVEL_FLAG +33,
107 COEFF_SIGN_FLAG = ABS_LEVEL_GTX_FLAG +72,
108 SYNTAX_ELEMENT_LAST = COEFF_SIGN_FLAG + 6,
109 };
110
111 static const uint8_t init_values[4][SYNTAX_ELEMENT_LAST] = {
112 {
113 //alf_ctb_flag
114 62, 39, 39, 54, 39, 39, 31, 39, 39,
115 //alf_use_aps_flag
116 46,
117 //alf_ctb_cc_cb_idc
118 18, 30, 31,
119 //alf_ctb_cc_cr_idc
120 18, 30, 31,
121 //alf_ctb_filter_alt_idx
122 11, 11,
123 //sao_merge_left_flag and sao_merge_up_flag
124 60,
125 //sao_type_idx_luma and sao_type_idx_chroma
126 13,
127 //split_cu_flag
128 19, 28, 38, 27, 29, 38, 20, 30, 31,
129 //split_qt_flag
130 27, 6, 15, 25, 19, 37,
131 //mtt_split_cu_vertical_flag
132 43, 42, 29, 27, 44,
133 //mtt_split_cu_binary_flag
134 36, 45, 36, 45,
135 //non_inter_flag
136 CNU, CNU,
137 //cu_skip_flag
138 0, 26, 28,
139 //pred_mode_ibc_flag
140 17, 42, 36,
141 //pred_mode_flag
142 CNU, CNU,
143 //pred_mode_plt_flag
144 25,
145 //cu_act_enabled_flag
146 52,
147 //intra_bdpcm_luma_flag
148 19,
149 //intra_bdpcm_luma_dir_flag
150 35,
151 //intra_mip_flag
152 33, 49, 50, 25,
153 //intra_luma_ref_idx
154 25, 60,
155 //intra_subpartitions_mode_flag
156 33,
157 //intra_subpartitions_split_flag
158 43,
159 //intra_luma_mpm_flag
160 45,
161 //intra_luma_not_planar_flag
162 13, 28,
163 //intra_bdpcm_chroma_flag
164 1,
165 //intra_bdpcm_chroma_dir_flag
166 27,
167 //cclm_mode_flag
168 59,
169 //cclm_mode_idx
170 27,
171 //intra_chroma_pred_mode
172 34,
173 //general_merge_flag
174 26,
175 //inter_pred_idc
176 CNU, CNU, CNU, CNU, CNU, CNU,
177 //inter_affine_flag
178 CNU, CNU, CNU,
179 //cu_affine_type_flag
180 CNU,
181 //sym_mvd_flag
182 CNU,
183 //ref_idx_l0 and ref_idx_l1
184 CNU, CNU,
185 //mvp_l0_flag and mvp_l1_flag
186 42,
187 //amvr_flag
188 CNU, CNU,
189 //amvr_precision_idx
190 35, 34, 35,
191 //bcw_idx
192 CNU,
193 //cu_coded_flag
194 6,
195 //cu_sbt_flag
196 CNU, CNU,
197 //cu_sbt_quad_flag
198 CNU,
199 //cu_sbt_horizontal_flag
200 CNU, CNU, CNU,
201 //cu_sbt_pos_flag
202 CNU,
203 //lfnst_idx
204 28, 52, 42,
205 //mts_idx
206 29, 0, 28, 0,
207 //copy_above_palette_indices_flag
208 42,
209 //palette_transpose_flag
210 42,
211 //run_copy_flag
212 50, 37, 45, 30, 46, 45, 38, 46,
213 //regular_merge_flag
214 CNU, CNU,
215 //mmvd_merge_flag
216 CNU,
217 //mmvd_cand_flag
218 CNU,
219 //mmvd_distance_idx
220 CNU,
221 //ciip_flag
222 CNU,
223 //merge_subblock_flag
224 CNU, CNU, CNU,
225 //merge_subblock_idx
226 CNU,
227 //merge_idx, merge_gpm_idx0, and merge_gpm_idx1
228 34,
229 //abs_mvd_greater0_flag
230 14,
231 //abs_mvd_greater1_flag
232 45,
233 //tu_y_coded_flag
234 15, 12, 5, 7,
235 //tu_cb_coded_flag
236 12, 21,
237 //tu_cr_coded_flag
238 33, 28, 36,
239 //cu_qp_delta_abs
240 CNU, CNU,
241 //cu_chroma_qp_offset_flag
242 CNU,
243 //cu_chroma_qp_offset_idx
244 CNU,
245 //transform_skip_flag
246 25, 9,
247 //tu_joint_cbcr_residual_flag
248 12, 21, 35,
249 //last_sig_coeff_x_prefix
250 13, 5, 4, 21, 14, 4, 6, 14, 21, 11, 14, 7, 14, 5, 11, 21,
251 30, 22, 13, 42, 12, 4, 3,
252 //last_sig_coeff_y_prefix
253 13, 5, 4, 6, 13, 11, 14, 6, 5, 3, 14, 22, 6, 4, 3, 6,
254 22, 29, 20, 34, 12, 4, 3,
255 //sb_coded_flag
256 18, 31, 25, 15, 18, 20, 38,
257 //sig_coeff_flag
258 25, 19, 28, 14, 25, 20, 29, 30, 19, 37, 30, 38, 11, 38, 46, 54,
259 27, 39, 39, 39, 44, 39, 39, 39, 18, 39, 39, 39, 27, 39, 39, 39,
260 0, 39, 39, 39, 25, 27, 28, 37, 34, 53, 53, 46, 19, 46, 38, 39,
261 52, 39, 39, 39, 11, 39, 39, 39, 19, 39, 39, 39, 25, 28, 38,
262 //par_level_flag
263 33, 25, 18, 26, 34, 27, 25, 26, 19, 42, 35, 33, 19, 27, 35, 35,
264 34, 42, 20, 43, 20, 33, 25, 26, 42, 19, 27, 26, 50, 35, 20, 43,
265 11,
266 //abs_level_gtx_flag
267 25, 25, 11, 27, 20, 21, 33, 12, 28, 21, 22, 34, 28, 29, 29, 30,
268 36, 29, 45, 30, 23, 40, 33, 27, 28, 21, 37, 36, 37, 45, 38, 46,
269 25, 1, 40, 25, 33, 11, 17, 25, 25, 18, 4, 17, 33, 26, 19, 13,
270 33, 19, 20, 28, 22, 40, 9, 25, 18, 26, 35, 25, 26, 35, 28, 37,
271 11, 5, 5, 14, 10, 3, 3, 3,
272 //coeff_sign_flag
273 12, 17, 46, 28, 25, 46,
274 },
275 {
276 //alf_ctb_flag
277 13, 23, 46, 4, 61, 54, 19, 46, 54,
278 //alf_use_aps_flag
279 46,
280 //alf_ctb_cc_cb_idc
281 18, 21, 38,
282 //alf_ctb_cc_cr_idc
283 18, 21, 38,
284 //alf_ctb_filter_alt_idx
285 20, 12,
286 //sao_merge_left_flag and sao_merge_up_flag
287 60,
288 //sao_type_idx_luma and sao_type_idx_chroma
289 5,
290 //split_cu_flag
291 11, 35, 53, 12, 6, 30, 13, 15, 31,
292 //split_qt_flag
293 20, 14, 23, 18, 19, 6,
294 //mtt_split_cu_vertical_flag
295 43, 35, 37, 34, 52,
296 //mtt_split_cu_binary_flag
297 43, 37, 21, 22,
298 //non_inter_flag
299 25, 12,
300 //cu_skip_flag
301 57, 59, 45,
302 //pred_mode_ibc_flag
303 0, 57, 44,
304 //pred_mode_flag
305 40, 35,
306 //pred_mode_plt_flag
307 0,
308 //cu_act_enabled_flag
309 46,
310 //intra_bdpcm_luma_flag
311 40,
312 //intra_bdpcm_luma_dir_flag
313 36,
314 //intra_mip_flag
315 41, 57, 58, 26,
316 //intra_luma_ref_idx
317 25, 58,
318 //intra_subpartitions_mode_flag
319 33,
320 //intra_subpartitions_split_flag
321 36,
322 //intra_luma_mpm_flag
323 36,
324 //intra_luma_not_planar_flag
325 12, 20,
326 //intra_bdpcm_chroma_flag
327 0,
328 //intra_bdpcm_chroma_dir_flag
329 13,
330 //cclm_mode_flag
331 34,
332 //cclm_mode_idx
333 27,
334 //intra_chroma_pred_mode
335 25,
336 //general_merge_flag
337 21,
338 //inter_pred_idc
339 7, 6, 5, 12, 4, 40,
340 //inter_affine_flag
341 12, 13, 14,
342 //cu_affine_type_flag
343 35,
344 //sym_mvd_flag
345 28,
346 //ref_idx_l0 and ref_idx_l1
347 20, 35,
348 //mvp_l0_flag and mvp_l1_flag
349 34,
350 //amvr_flag
351 59, 58,
352 //amvr_precision_idx
353 60, 48, 60,
354 //bcw_idx
355 4,
356 //cu_coded_flag
357 5,
358 //cu_sbt_flag
359 56, 57,
360 //cu_sbt_quad_flag
361 42,
362 //cu_sbt_horizontal_flag
363 20, 43, 12,
364 //cu_sbt_pos_flag
365 28,
366 //lfnst_idx
367 37, 45, 27,
368 //mts_idx
369 45, 40, 27, 0,
370 //copy_above_palette_indices_flag
371 59,
372 //palette_transpose_flag
373 42,
374 //run_copy_flag
375 51, 30, 30, 38, 23, 38, 53, 46,
376 //regular_merge_flag
377 38, 7,
378 //mmvd_merge_flag
379 26,
380 //mmvd_cand_flag
381 43,
382 //mmvd_distance_idx
383 60,
384 //ciip_flag
385 57,
386 //merge_subblock_flag
387 48, 57, 44,
388 //merge_subblock_idx
389 5,
390 //merge_idx, merge_gpm_idx0, and merge_gpm_idx1
391 20,
392 //abs_mvd_greater0_flag
393 44,
394 //abs_mvd_greater1_flag
395 43,
396 //tu_y_coded_flag
397 23, 5, 20, 7,
398 //tu_cb_coded_flag
399 25, 28,
400 //tu_cr_coded_flag
401 25, 29, 45,
402 //cu_qp_delta_abs
403 CNU, CNU,
404 //cu_chroma_qp_offset_flag
405 CNU,
406 //cu_chroma_qp_offset_idx
407 CNU,
408 //transform_skip_flag
409 25, 9,
410 //tu_joint_cbcr_residual_flag
411 27, 36, 45,
412 //last_sig_coeff_x_prefix
413 6, 13, 12, 6, 6, 12, 14, 14, 13, 12, 29, 7, 6, 13, 36, 28,
414 14, 13, 5, 26, 12, 4, 18,
415 //last_sig_coeff_y_prefix
416 5, 5, 12, 6, 6, 4, 6, 14, 5, 12, 14, 7, 13, 5, 13, 21,
417 14, 20, 12, 34, 11, 4, 18,
418 //sb_coded_flag
419 25, 30, 25, 45, 18, 12, 29,
420 //sig_coeff_flag
421 17, 41, 42, 29, 25, 49, 43, 37, 33, 58, 51, 30, 19, 38, 38, 46,
422 34, 54, 54, 39, 6, 39, 39, 39, 19, 39, 54, 39, 19, 39, 39, 39,
423 56, 39, 39, 39, 17, 34, 35, 21, 41, 59, 60, 38, 35, 45, 53, 54,
424 44, 39, 39, 39, 34, 38, 62, 39, 26, 39, 39, 39, 40, 35, 44,
425 //par_level_flag
426 18, 17, 33, 18, 26, 42, 25, 33, 26, 42, 27, 25, 34, 42, 42, 35,
427 26, 27, 42, 20, 20, 25, 25, 26, 11, 19, 27, 33, 42, 35, 35, 43,
428 3,
429 //abs_level_gtx_flag
430 0, 17, 26, 19, 35, 21, 25, 34, 20, 28, 29, 33, 27, 28, 29, 22,
431 34, 28, 44, 37, 38, 0, 25, 19, 20, 13, 14, 57, 44, 30, 30, 23,
432 17, 0, 1, 17, 25, 18, 0, 9, 25, 33, 34, 9, 25, 18, 26, 20,
433 25, 18, 19, 27, 29, 17, 9, 25, 10, 18, 4, 17, 33, 19, 20, 29,
434 18, 11, 4, 28, 2, 10, 3, 3,
435 //coeff_sign_flag
436 5, 10, 53, 43, 25, 46,
437 },
438 {
439 //alf_ctb_flag
440 33, 52, 46, 25, 61, 54, 25, 61, 54,
441 //alf_use_aps_flag
442 46,
443 //alf_ctb_cc_cb_idc
444 25, 35, 38,
445 //alf_ctb_cc_cr_idc
446 25, 28, 38,
447 //alf_ctb_filter_alt_idx
448 11, 26,
449 //sao_merge_left_flag and sao_merge_up_flag
450 2,
451 //sao_type_idx_luma and sao_type_idx_chroma
452 2,
453 //split_cu_flag
454 18, 27, 15, 18, 28, 45, 26, 7, 23,
455 //split_qt_flag
456 26, 36, 38, 18, 34, 21,
457 //mtt_split_cu_vertical_flag
458 43, 42, 37, 42, 44,
459 //mtt_split_cu_binary_flag
460 28, 29, 28, 29,
461 //non_inter_flag
462 25, 20,
463 //cu_skip_flag
464 57, 60, 46,
465 //pred_mode_ibc_flag
466 0, 43, 45,
467 //pred_mode_flag
468 40, 35,
469 //pred_mode_plt_flag
470 17,
471 //cu_act_enabled_flag
472 46,
473 //intra_bdpcm_luma_flag
474 19,
475 //intra_bdpcm_luma_dir_flag
476 21,
477 //intra_mip_flag
478 56, 57, 50, 26,
479 //intra_luma_ref_idx
480 25, 59,
481 //intra_subpartitions_mode_flag
482 33,
483 //intra_subpartitions_split_flag
484 43,
485 //intra_luma_mpm_flag
486 44,
487 //intra_luma_not_planar_flag
488 13, 6,
489 //intra_bdpcm_chroma_flag
490 0,
491 //intra_bdpcm_chroma_dir_flag
492 28,
493 //cclm_mode_flag
494 26,
495 //cclm_mode_idx
496 27,
497 //intra_chroma_pred_mode
498 25,
499 //general_merge_flag
500 6,
501 //inter_pred_idc
502 14, 13, 5, 4, 3, 40,
503 //inter_affine_flag
504 19, 13, 6,
505 //cu_affine_type_flag
506 35,
507 //sym_mvd_flag
508 28,
509 //ref_idx_l0 and ref_idx_l1
510 5, 35,
511 //mvp_l0_flag and mvp_l1_flag
512 34,
513 //amvr_flag
514 59, 50,
515 //amvr_precision_idx
516 38, 26, 60,
517 //bcw_idx
518 5,
519 //cu_coded_flag
520 12,
521 //cu_sbt_flag
522 41, 57,
523 //cu_sbt_quad_flag
524 42,
525 //cu_sbt_horizontal_flag
526 35, 51, 27,
527 //cu_sbt_pos_flag
528 28,
529 //lfnst_idx
530 52, 37, 27,
531 //mts_idx
532 45, 25, 27, 0,
533 //copy_above_palette_indices_flag
534 50,
535 //palette_transpose_flag
536 35,
537 //run_copy_flag
538 58, 45, 45, 30, 38, 45, 38, 46,
539 //regular_merge_flag
540 46, 15,
541 //mmvd_merge_flag
542 25,
543 //mmvd_cand_flag
544 43,
545 //mmvd_distance_idx
546 59,
547 //ciip_flag
548 57,
549 //merge_subblock_flag
550 25, 58, 45,
551 //merge_subblock_idx
552 4,
553 //merge_idx, merge_gpm_idx0, and merge_gpm_idx1
554 18,
555 //abs_mvd_greater0_flag
556 51,
557 //abs_mvd_greater1_flag
558 36,
559 //tu_y_coded_flag
560 15, 6, 5, 14,
561 //tu_cb_coded_flag
562 25, 37,
563 //tu_cr_coded_flag
564 9, 36, 45,
565 //cu_qp_delta_abs
566 CNU, CNU,
567 //cu_chroma_qp_offset_flag
568 CNU,
569 //cu_chroma_qp_offset_idx
570 CNU,
571 //transform_skip_flag
572 25, 17,
573 //tu_joint_cbcr_residual_flag
574 42, 43, 52,
575 //last_sig_coeff_x_prefix
576 6, 6, 12, 14, 6, 4, 14, 7, 6, 4, 29, 7, 6, 6, 12, 28,
577 7, 13, 13, 35, 19, 5, 4,
578 //last_sig_coeff_y_prefix
579 5, 5, 20, 13, 13, 19, 21, 6, 12, 12, 14, 14, 5, 4, 12, 13,
580 7, 13, 12, 41, 11, 5, 27,
581 //sb_coded_flag
582 25, 45, 25, 14, 18, 35, 45,
583 //sig_coeff_flag
584 17, 41, 49, 36, 1, 49, 50, 37, 48, 51, 58, 45, 26, 45, 53, 46,
585 49, 54, 61, 39, 35, 39, 39, 39, 19, 54, 39, 39, 50, 39, 39, 39,
586 0, 39, 39, 39, 9, 49, 50, 36, 48, 59, 59, 38, 34, 45, 38, 31,
587 58, 39, 39, 39, 34, 38, 54, 39, 41, 39, 39, 39, 25, 50, 37,
588 //par_level_flag
589 33, 40, 25, 41, 26, 42, 25, 33, 26, 34, 27, 25, 41, 42, 42, 35,
590 33, 27, 35, 42, 43, 33, 25, 26, 34, 19, 27, 33, 42, 43, 35, 43,
591 11,
592 //abs_level_gtx_flag
593 0, 0, 33, 34, 35, 21, 25, 34, 35, 28, 29, 40, 42, 43, 29, 30,
594 49, 36, 37, 45, 38, 0, 40, 34, 43, 36, 37, 57, 52, 45, 38, 46,
595 25, 0, 0, 17, 25, 26, 0, 9, 25, 33, 19, 0, 25, 33, 26, 20,
596 25, 33, 27, 35, 22, 25, 1, 25, 33, 26, 12, 25, 33, 27, 28, 37,
597 19, 11, 4, 6, 3, 4, 4, 5,
598 //coeff_sign_flag
599 35, 25, 46, 28, 33, 38,
600 },
601 //shiftIdx
602 {
603 //alf_ctb_flag
604 0, 0, 0, 4, 0, 0, 1, 0, 0,
605 //alf_use_aps_flag
606 0,
607 //alf_ctb_cc_cb_idc
608 4, 1, 4,
609 //alf_ctb_cc_cr_idc
610 4, 1, 4,
611 //alf_ctb_filter_alt_idx
612 0, 0,
613 //sao_merge_left_flag and sao_merge_up_flag
614 0,
615 //sao_type_idx_luma and sao_type_idx_chroma
616 4,
617 //split_cu_flag
618 12, 13, 8, 8, 13, 12, 5, 9, 9,
619 //split_qt_flag
620 0, 8, 8, 12, 12, 8,
621 //mtt_split_cu_vertical_flag
622 9, 8, 9, 8, 5,
623 //mtt_split_cu_binary_flag
624 12, 13, 12, 13,
625 //non_inter_flag
626 1, 0,
627 //cu_skip_flag
628 5, 4, 8,
629 //pred_mode_ibc_flag
630 1, 5, 8,
631 //pred_mode_flag
632 5, 1,
633 //pred_mode_plt_flag
634 1,
635 //cu_act_enabled_flag
636 1,
637 //intra_bdpcm_luma_flag
638 1,
639 //intra_bdpcm_luma_dir_flag
640 4,
641 //intra_mip_flag
642 9, 10, 9, 6,
643 //intra_luma_ref_idx
644 5, 8,
645 //intra_subpartitions_mode_flag
646 9,
647 //intra_subpartitions_split_flag
648 2,
649 //intra_luma_mpm_flag
650 6,
651 //intra_luma_not_planar_flag
652 1, 5,
653 //intra_bdpcm_chroma_flag
654 1,
655 //intra_bdpcm_chroma_dir_flag
656 0,
657 //cclm_mode_flag
658 4,
659 //cclm_mode_idx
660 9,
661 //intra_chroma_pred_mode
662 5,
663 //general_merge_flag
664 4,
665 //inter_pred_idc
666 0, 0, 1, 4, 4, 0,
667 //inter_affine_flag
668 4, 0, 0,
669 //cu_affine_type_flag
670 4,
671 //sym_mvd_flag
672 5,
673 //ref_idx_l0 and ref_idx_l1
674 0, 4,
675 //mvp_l0_flag and mvp_l1_flag
676 12,
677 //amvr_flag
678 0, 0,
679 //amvr_precision_idx
680 4, 5, 0,
681 //bcw_idx
682 1,
683 //cu_coded_flag
684 4,
685 //cu_sbt_flag
686 1, 5,
687 //cu_sbt_quad_flag
688 10,
689 //cu_sbt_horizontal_flag
690 8, 4, 1,
691 //cu_sbt_pos_flag
692 13,
693 //lfnst_idx
694 9, 9, 10,
695 //mts_idx
696 8, 0, 9, 0,
697 //copy_above_palette_indices_flag
698 9,
699 //palette_transpose_flag
700 5,
701 //run_copy_flag
702 9, 6, 9, 10, 5, 0, 9, 5,
703 //regular_merge_flag
704 5, 5,
705 //mmvd_merge_flag
706 4,
707 //mmvd_cand_flag
708 10,
709 //mmvd_distance_idx
710 0,
711 //ciip_flag
712 1,
713 //merge_subblock_flag
714 4, 4, 4,
715 //merge_subblock_idx
716 0,
717 //merge_idx, merge_gpm_idx0, and merge_gpm_idx1
718 4,
719 //abs_mvd_greater0_flag
720 9,
721 //abs_mvd_greater1_flag
722 5,
723 //tu_y_coded_flag
724 5, 1, 8, 9,
725 //tu_cb_coded_flag
726 5, 0,
727 //tu_cr_coded_flag
728 2, 1, 0,
729 //cu_qp_delta_abs
730 8, 8,
731 //cu_chroma_qp_offset_flag
732 8,
733 //cu_chroma_qp_offset_idx
734 8,
735 //transform_skip_flag
736 1, 1,
737 //tu_joint_cbcr_residual_flag
738 1, 1, 0,
739 //last_sig_coeff_x_prefix
740 8, 5, 4, 5, 4, 4, 5, 4, 1, 0, 4, 1, 0, 0, 0, 0,
741 1, 0, 0, 0, 5, 4, 4,
742 //last_sig_coeff_y_prefix
743 8, 5, 8, 5, 5, 4, 5, 5, 4, 0, 5, 4, 1, 0, 0, 1,
744 4, 0, 0, 0, 6, 5, 5,
745 //sb_coded_flag
746 8, 5, 5, 8, 5, 8, 8,
747 //sig_coeff_flag
748 12, 9, 9, 10, 9, 9, 9, 10, 8, 8, 8, 10, 9, 13, 8, 8,
749 8, 8, 8, 5, 8, 0, 0, 0, 8, 8, 8, 8, 8, 0, 4, 4,
750 0, 0, 0, 0, 12, 12, 9, 13, 4, 5, 8, 9, 8, 12, 12, 8,
751 4, 0, 0, 0, 8, 8, 8, 8, 4, 0, 0, 0, 13, 13, 8,
752 //par_level_flag
753 8, 9, 12, 13, 13, 13, 10, 13, 13, 13, 13, 13, 13, 13, 13, 13,
754 10, 13, 13, 13, 13, 8, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13,
755 6,
756 //abs_level_gtx_flag
757 9, 5, 10, 13, 13, 10, 9, 10, 13, 13, 13, 9, 10, 10, 10, 13,
758 8, 9, 10, 10, 13, 8, 8, 9, 12, 12, 10, 5, 9, 9, 9, 13,
759 1, 5, 9, 9, 9, 6, 5, 9, 10, 10, 9, 9, 9, 9, 9, 9,
760 6, 8, 9, 9, 10, 1, 5, 8, 8, 9, 6, 6, 9, 8, 8, 9,
761 4, 2, 1, 6, 1, 1, 1, 1,
762 //coeff_sign_flag
763 1, 4, 4, 5, 8, 8,
764 }
765 };
766
767 #define MAX_SUB_BLOCKS 16
768 #define MAX_SUB_BLOCK_SIZE 4
769 #define MAX_TB_SIZE 64
770
771 typedef struct ResidualCoding {
772 //common for ts and non ts
773 TransformBlock *tb;
774
775 int log2_sb_w;
776 int log2_sb_h;
777 int last_sub_block;
778 int hist_value;
779 int update_hist;
780 int num_sb_coeff;
781 int rem_bins_pass1;
782
783 int width_in_sbs;
784 int height_in_sbs;
785 int nb_sbs;
786
787 const uint8_t *sb_scan_x_off;
788 const uint8_t *sb_scan_y_off;
789 const uint8_t *scan_x_off;
790 const uint8_t *scan_y_off;
791
792 uint8_t sb_coded_flag[MAX_SUB_BLOCKS * MAX_SUB_BLOCKS];
793 int sig_coeff_flag[MAX_TB_SIZE * MAX_TB_SIZE];
794 int abs_level_pass1[MAX_TB_SIZE * MAX_TB_SIZE]; ///< AbsLevelPass1[][]
795 int abs_level[MAX_TB_SIZE * MAX_TB_SIZE];
796
797 //for ts only
798 uint8_t infer_sb_cbf;
799 int coeff_sign_level[MAX_TB_SIZE * MAX_TB_SIZE]; ///< CoeffSignLevel[][]
800
801 //for non ts only
802 int qstate;
803 int last_scan_pos;
804 int last_significant_coeff_x;
805 int last_significant_coeff_y;
806 } ResidualCoding;
807
808 ✗ static int cabac_reinit(VVCLocalContext *lc)
809 {
810 ✗ return skip_bytes(&lc->ep->cc, 0) == NULL ? AVERROR_INVALIDDATA : 0;
811 }
812
813 1873 static void cabac_init_state(VVCLocalContext *lc)
814 {
815 1873 const VVCSPS *sps = lc->fc->ps.sps;
816 1873 const H266RawSliceHeader *rsh = lc->sc->sh.r;
817 1873 const int qp = av_clip_uintp2(lc->sc->sh.slice_qp_y, 6);
818 1873 int init_type = 2 - rsh->sh_slice_type;
819
820 av_assert0(VVC_CONTEXTS == SYNTAX_ELEMENT_LAST);
821
822 1873 ff_vvc_ep_init_stat_coeff(lc->ep, sps->bit_depth, sps->r->sps_persistent_rice_adaptation_enabled_flag);
823
824
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 1873 if (rsh->sh_cabac_init_flag && !IS_I(rsh))
825 485 init_type ^= 3;
826
827
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 709867 for (int i = 0; i < VVC_CONTEXTS; i++) {
828 707994 VVCCabacState *state = &lc->ep->cabac_state[i];
829 707994 const int init_value = init_values[init_type][i];
830 707994 const int shift_idx = init_values[3][i];
831 707994 const int m = (init_value >> 3) - 4;
832 707994 const int n = ((init_value & 7) * 18) + 1;
833 707994 const int pre = av_clip(((m * (qp - 16)) >> 1) + n, 1, 127);
834
835 707994 state->state[0] = pre << 3;
836 707994 state->state[1] = pre << 7;
837 707994 state->shift[0] = (shift_idx >> 2 ) + 2;
838 707994 state->shift[1] = (shift_idx & 3 ) + 3 + state->shift[0];
839 }
840 1873 }
841
842 45792 int ff_vvc_cabac_init(VVCLocalContext *lc,
843 const int ctu_idx, const int rx, const int ry)
844 {
845 45792 int ret = 0;
846 45792 const VVCPPS *pps = lc->fc->ps.pps;
847 45792 const int first_ctb_in_slice = !ctu_idx;
848
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 45792 const int first_ctb_in_tile = rx == pps->ctb_to_col_bd[rx] && ry == pps->ctb_to_row_bd[ry];
849
850
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 45792 if (first_ctb_in_slice|| first_ctb_in_tile) {
851
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 1873 if (lc->sc->nb_eps == 1 && !first_ctb_in_slice)
852 ✗ ret = cabac_reinit(lc);
853
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 1873 if (!ret)
854 1873 cabac_init_state(lc);
855 }
856 45792 return ret;
857 }
858
859 //fixme
860 1768017 static void vvc_refill2(CABACContext* c) {
861 int i;
862 unsigned x;
863 #if !HAVE_FAST_CLZ
864 x = c->low ^ (c->low - 1);
865 i = 7 - ff_h264_norm_shift[x >> (CABAC_BITS - 1)];
866 #else
867 1768017 i = ff_ctz(c->low) - CABAC_BITS;
868 #endif
869
870 1768017 x = -CABAC_MASK;
871
872 #if CABAC_BITS == 16
873 1768017 x += (c->bytestream[0] << 9) + (c->bytestream[1] << 1);
874 #else
875 x += c->bytestream[0] << 1;
876 #endif
877
878 1768017 c->low += x << i;
879 #if !UNCHECKED_BITSTREAM_READER
880
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 1768017 if (c->bytestream < c->bytestream_end)
881 #endif
882 1767907 c->bytestream += CABAC_BITS / 8;
883 1768017 }
884
885 47182593 static int inline vvc_get_cabac(CABACContext *c, VVCCabacState* base, const int ctx)
886 {
887 47182593 VVCCabacState *s = base + ctx;
888 47182593 const int qRangeIdx = c->range >> 5;
889 47182593 const int pState = s->state[1] + (s->state[0] << 4);
890 47182593 const int valMps = pState >> 14;
891
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 47182593 const int RangeLPS = (qRangeIdx * ((valMps ? 32767 - pState : pState) >> 9 ) >> 1) + 4;
892 int bit, lps_mask;
893
894 47182593 c->range -= RangeLPS;
895 47182593 lps_mask = ((c->range<<(CABAC_BITS+1)) - c->low)>>31;
896
897 47182593 c->low -= (c->range<<(CABAC_BITS+1)) & lps_mask;
898 47182593 c->range += (RangeLPS - c->range) & lps_mask;
899
900 47182593 bit = valMps ^ (lps_mask & 1);
901
902 47182593 lps_mask = ff_h264_norm_shift[c->range];
903 47182593 c->range <<= lps_mask;
904 47182593 c->low <<= lps_mask;
905
906
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 47182593 if (!(c->low & CABAC_MASK))
907 1768017 vvc_refill2(c);
908 47182593 s->state[0] = s->state[0] - (s->state[0] >> s->shift[0]) + (1023 * bit >> s->shift[0]);
909 47182593 s->state[1] = s->state[1] - (s->state[1] >> s->shift[1]) + (16383 * bit >> s->shift[1]);
910 47182593 return bit;
911 }
912
913 #define GET_CABAC(ctx) vvc_get_cabac(&lc->ep->cc, lc->ep->cabac_state, ctx)
914
915 //9.3.3.4 Truncated binary (TB) binarization process
916 208386 static int truncated_binary_decode(VVCLocalContext *lc, const int c_max)
917 {
918 208386 const int n = c_max + 1;
919 208386 const int k = av_log2(n);
920 208386 const int u = (1 << (k+1)) - n;
921 208386 int v = 0;
922
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 1002841 for (int i = 0; i < k; i++)
923 794455 v = (v << 1) | get_cabac_bypass(&lc->ep->cc);
924
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 208386 if (v >= u) {
925 116192 v = (v << 1) | get_cabac_bypass(&lc->ep->cc);
926 116192 v -= u;
927 }
928 208386 return v;
929 }
930
931 // 9.3.3.6 Limited k-th order Exp-Golomb binarization process
932 83258 static int limited_kth_order_egk_decode(CABACContext *c, const int k, const int max_pre_ext_len, const int trunc_suffix_len)
933 {
934 83258 int pre_ext_len = 0;
935 int escape_length;
936 83258 int val = 0;
937
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 147956 while ((pre_ext_len < max_pre_ext_len) && get_cabac_bypass(c))
938 64698 pre_ext_len++;
939
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 83258 if (pre_ext_len == max_pre_ext_len)
940 ✗ escape_length = trunc_suffix_len;
941 else
942 83258 escape_length = pre_ext_len + k;
943
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 239265 while (escape_length-- > 0) {
944 156007 val = (val << 1) + get_cabac_bypass(c);
945 }
946 83258 val += ((1 << pre_ext_len) - 1) << k;
947 83258 return val;
948 }
949
950 static av_always_inline
951 3172196 void get_left_top(const VVCLocalContext *lc, uint8_t *left, uint8_t *top,
952 const int x0, const int y0, const uint8_t *left_ctx, const uint8_t *top_ctx)
953 {
954 3172196 const VVCFrameContext *fc = lc->fc;
955 3172196 const VVCSPS *sps = fc->ps.sps;
956 3172196 const int min_cb_width = fc->ps.pps->min_cb_width;
957 3172196 const int x0b = av_zero_extend(x0, sps->ctb_log2_size_y);
958 3172196 const int y0b = av_zero_extend(y0, sps->ctb_log2_size_y);
959 3172196 const int x_cb = x0 >> sps->min_cb_log2_size_y;
960 3172196 const int y_cb = y0 >> sps->min_cb_log2_size_y;
961
962
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 3172196 if (lc->ctb_left_flag || x0b)
963 3074157 *left = SAMPLE_CTB(left_ctx, x_cb - 1, y_cb);
964
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 3172196 if (lc->ctb_up_flag || y0b)
965 3020727 *top = SAMPLE_CTB(top_ctx, x_cb, y_cb - 1);
966 3172196 }
967
968 static av_always_inline
969 761876 uint8_t get_inc(VVCLocalContext *lc, const uint8_t *ctx)
970 {
971 761876 uint8_t left = 0, top = 0;
972 761876 get_left_top(lc, &left, &top, lc->cu->x0, lc->cu->y0, ctx, ctx);
973 761876 return left + top;
974 }
975
976 22687 int ff_vvc_sao_merge_flag_decode(VVCLocalContext *lc)
977 {
978 22687 return GET_CABAC(SAO_MERGE_FLAG);
979 }
980
981 12433 int ff_vvc_sao_type_idx_decode(VVCLocalContext *lc)
982 {
983
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 12433 if (!GET_CABAC(SAO_TYPE_IDX))
984 8774 return SAO_NOT_APPLIED;
985
986
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 3659 if (!get_cabac_bypass(&lc->ep->cc))
987 1049 return SAO_BAND;
988 2610 return SAO_EDGE;
989 }
990
991 1163 int ff_vvc_sao_band_position_decode(VVCLocalContext *lc)
992 {
993 1163 int value = get_cabac_bypass(&lc->ep->cc);
994
995
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 5815 for (int i = 0; i < 4; i++)
996 4652 value = (value << 1) | get_cabac_bypass(&lc->ep->cc);
997 1163 return value;
998 }
999
1000 18364 int ff_vvc_sao_offset_abs_decode(VVCLocalContext *lc)
1001 {
1002 18364 int i = 0;
1003 18364 const int length = (1 << (FFMIN(lc->fc->ps.sps->bit_depth, 10) - 5)) - 1;
1004
1005
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 49188 while (i < length && get_cabac_bypass(&lc->ep->cc))
1006 30824 i++;
1007 18364 return i;
1008 }
1009
1010 1723 int ff_vvc_sao_offset_sign_decode(VVCLocalContext *lc)
1011 {
1012 1723 return get_cabac_bypass(&lc->ep->cc);
1013 }
1014
1015 2610 int ff_vvc_sao_eo_class_decode(VVCLocalContext *lc)
1016 {
1017 2610 int ret = get_cabac_bypass(&lc->ep->cc) << 1;
1018 2610 ret |= get_cabac_bypass(&lc->ep->cc);
1019 2610 return ret;
1020 }
1021
1022 57325 int ff_vvc_alf_ctb_flag(VVCLocalContext *lc, const int rx, const int ry, const int c_idx)
1023 {
1024 57325 int inc = c_idx * 3;
1025 57325 const VVCFrameContext *fc = lc->fc;
1026
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 57325 if (lc->ctb_left_flag) {
1027 49594 const ALFParams *left = &CTB(fc->tab.alf, rx - 1, ry);
1028 49594 inc += left->ctb_flag[c_idx];
1029 }
1030
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 57325 if (lc->ctb_up_flag) {
1031 43680 const ALFParams *above = &CTB(fc->tab.alf, rx, ry - 1);
1032 43680 inc += above->ctb_flag[c_idx];
1033 }
1034 57325 return GET_CABAC(ALF_CTB_FLAG + inc);
1035 }
1036
1037 18110 int ff_vvc_alf_use_aps_flag(VVCLocalContext *lc)
1038 {
1039 18110 return GET_CABAC(ALF_USE_APS_FLAG);
1040 }
1041
1042 4492 int ff_vvc_alf_luma_prev_filter_idx(VVCLocalContext *lc)
1043 {
1044 4492 return truncated_binary_decode(lc, lc->sc->sh.r->sh_num_alf_aps_ids_luma - 1);
1045 }
1046
1047 2496 int ff_vvc_alf_luma_fixed_filter_idx(VVCLocalContext *lc)
1048 {
1049 2496 return truncated_binary_decode(lc, 15);
1050 }
1051
1052 15333 int ff_vvc_alf_ctb_filter_alt_idx(VVCLocalContext *lc, const int c_idx, const int num_chroma_filters)
1053 {
1054 15333 int i = 0;
1055 15333 const int length = num_chroma_filters - 1;
1056
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 30049 while (i < length && GET_CABAC(ALF_CTB_FILTER_ALT_IDX + c_idx - 1))
1058 14716 i++;
1059 15333 return i;
1060 }
1061
1062 21273 int ff_vvc_alf_ctb_cc_idc(VVCLocalContext *lc, const int rx, const int ry, const int idx, const int cc_filters_signalled)
1063 {
1064
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 21273 int inc = !idx ? ALF_CTB_CC_CB_IDC : ALF_CTB_CC_CR_IDC;
1065 21273 int i = 0;
1066 21273 const VVCFrameContext *fc = lc->fc;
1067
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 21273 if (lc->ctb_left_flag) {
1068 19344 const ALFParams *left = &CTB(fc->tab.alf, rx - 1, ry);
1069 19344 inc += left->ctb_cc_idc[idx] != 0;
1070 }
1071
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 21273 if (lc->ctb_up_flag) {
1072 18133 const ALFParams *above = &CTB(fc->tab.alf, rx, ry - 1);
1073 18133 inc += above->ctb_cc_idc[idx] != 0;
1074 }
1075
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 21273 if (!GET_CABAC(inc))
1077 11826 return 0;
1078 9447 i++;
1079
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 17662 while (i < cc_filters_signalled && get_cabac_bypass(&lc->ep->cc))
1080 8215 i++;
1081 9447 return i;
1082 }
1083
1084 1823471 int ff_vvc_split_cu_flag(VVCLocalContext *lc, const int x0, const int y0,
1085 const int cb_width, const int cb_height, const int is_chroma, const VVCAllowedSplit *a)
1086 {
1087 1823471 const VVCFrameContext *fc = lc->fc;
1088 1823471 const VVCPPS *pps = fc->ps.pps;
1089
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 1823471 const int is_inside = (x0 + cb_width <= pps->width) && (y0 + cb_height <= pps->height);
1090
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 1823471 if ((a->btv || a->bth || a->ttv || a->tth || a->qt) && is_inside)
1092 {
1093 1319281 uint8_t inc = 0, left_height = cb_height, top_width = cb_width;
1094
1095 1319281 get_left_top(lc, &left_height, &top_width, x0, y0, fc->tab.cb_height[is_chroma], fc->tab.cb_width[is_chroma]);
1096 1319281 inc += left_height < cb_height;
1097 1319281 inc += top_width < cb_width;
1098 1319281 inc += (a->btv + a->bth + a->ttv + a->tth + 2 * a->qt - 1) / 2 * 3;
1099
1100 1319281 return GET_CABAC(SPLIT_CU_FLAG + inc);
1101
1102 }
1103 504190 return !is_inside;
1104 }
1105
1106 260116 static int split_qt_flag_decode(VVCLocalContext *lc, const int x0, const int y0, const int ch_type, const int cqt_depth)
1107 {
1108 260116 const VVCFrameContext *fc = lc->fc;
1109 260116 int inc = 0;
1110 260116 uint8_t depth_left = 0, depth_top = 0;
1111
1112 260116 get_left_top(lc, &depth_left, &depth_top, x0, y0, fc->tab.cqt_depth[ch_type], fc->tab.cqt_depth[ch_type]);
1113 260116 inc += depth_left > cqt_depth;
1114 260116 inc += depth_top > cqt_depth;
1115
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 260116 inc += (cqt_depth >= 2) * 3;
1116
1117 260116 return GET_CABAC(SPLIT_QT_FLAG + inc);
1118 }
1119
1120 616910 static int mtt_split_cu_vertical_flag_decode(VVCLocalContext *lc, const int x0, const int y0,
1121 const int cb_width, const int cb_height, const int ch_type, const VVCAllowedSplit* a)
1122 {
1123
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 616910 if ((a->bth || a->tth) && (a->btv || a->ttv)) {
1124 int inc;
1125 495343 const int v = a->btv + a->ttv;
1126 495343 const int h = a->bth + a->tth;
1127
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 495343 if (v > h)
1128 75348 inc = 4;
1129
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 419995 else if (v < h)
1130 77924 inc = 3;
1131 else {
1132 342071 const VVCFrameContext *fc = lc->fc;
1133 342071 const VVCSPS *sps = fc->ps.sps;
1134 342071 const int min_cb_width = fc->ps.pps->min_cb_width;
1135 342071 const int x0b = av_zero_extend(x0, sps->ctb_log2_size_y);
1136 342071 const int y0b = av_zero_extend(y0, sps->ctb_log2_size_y);
1137 342071 const int x_cb = x0 >> sps->min_cb_log2_size_y;
1138 342071 const int y_cb = y0 >> sps->min_cb_log2_size_y;
1139
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 342071 const int available_a = lc->ctb_up_flag || y0b;
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 342071 const int available_l = lc->ctb_left_flag || x0b;
1141
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 342071 const int da = cb_width / (available_a ? SAMPLE_CTB(fc->tab.cb_width[ch_type], x_cb, y_cb - 1) : 1);
1142
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 342071 const int dl = cb_height / (available_l ? SAMPLE_CTB(fc->tab.cb_height[ch_type], x_cb - 1, y_cb) : 1);
1143
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 342071 if (da == dl || !available_a || !available_l)
1145 120430 inc = 0;
1146
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 221641 else if (da < dl)
1147 114386 inc = 1;
1148 else
1149 107255 inc = 2;
1150 }
1151 495343 return GET_CABAC(MTT_SPLIT_CU_VERTICAL_FLAG + inc);
1152 }
1153
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 121567 return !(a->bth || a->tth);
1154 }
1155
1156 426410 static int mtt_split_cu_binary_flag_decode(VVCLocalContext *lc, const int mtt_split_cu_vertical_flag, const int mtt_depth)
1157 {
1158 426410 const int inc = (2 * mtt_split_cu_vertical_flag) + ((mtt_depth <= 1) ? 1 : 0);
1159 426410 return GET_CABAC(MTT_SPLIT_CU_BINARY_FLAG + inc);
1160 }
1161
1162 715594 VVCSplitMode ff_vvc_split_mode(VVCLocalContext *lc, const int x0, const int y0, const int cb_width, const int cb_height,
1163 const int cqt_depth, const int mtt_depth, const int ch_type, const VVCAllowedSplit *a)
1164 {
1165
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 715594 const int allow_no_qt = a->btv || a->bth || a->ttv || a->tth;
1166 int split_qt_flag;
1167 int mtt_split_cu_vertical_flag;
1168 int mtt_split_cu_binary_flag;
1169 715594 const VVCSplitMode mtt_split_modes[] = {
1170 SPLIT_TT_HOR, SPLIT_BT_HOR, SPLIT_TT_VER, SPLIT_BT_VER,
1171 };
1172
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 715594 if (allow_no_qt && a->qt) {
1173 260116 split_qt_flag = split_qt_flag_decode(lc, x0, y0, ch_type, cqt_depth);
1174 } else {
1175
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 455478 split_qt_flag = !allow_no_qt || a->qt;
1176 }
1177
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 715594 if (split_qt_flag)
1178 98684 return SPLIT_QT;
1179 616910 mtt_split_cu_vertical_flag = mtt_split_cu_vertical_flag_decode(lc, x0, y0, cb_width, cb_height, ch_type, a);
1180
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 616910 if ((a->btv && a->ttv && mtt_split_cu_vertical_flag) ||
1181
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 411118 (a->bth && a->tth && !mtt_split_cu_vertical_flag)) {
1182 426410 mtt_split_cu_binary_flag = mtt_split_cu_binary_flag_decode(lc, mtt_split_cu_vertical_flag, mtt_depth);
1183 } else {
1184
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 190500 if (!a->btv && !a->bth)
1185 673 mtt_split_cu_binary_flag = 0;
1186
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 189827 else if (!a->ttv && !a->tth)
1187 131974 mtt_split_cu_binary_flag = 1;
1188
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 57853 else if (a->bth && a->ttv)
1189 28568 mtt_split_cu_binary_flag = 1 - mtt_split_cu_vertical_flag;
1190 else
1191 29285 mtt_split_cu_binary_flag = mtt_split_cu_vertical_flag;
1192 }
1193 616910 return mtt_split_modes[(mtt_split_cu_vertical_flag << 1) + mtt_split_cu_binary_flag];
1194 }
1195
1196 27488 int ff_vvc_non_inter_flag(VVCLocalContext *lc, const int x0, const int y0, const int ch_type)
1197 {
1198 27488 const VVCFrameContext *fc = lc->fc;
1199 27488 uint8_t inc, left = MODE_INTER, top = MODE_INTER;
1200
1201 27488 get_left_top(lc, &left, &top, x0, y0, fc->tab.cpm[ch_type], fc->tab.cpm[ch_type]);
1202
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 27488 inc = left == MODE_INTRA || top == MODE_INTRA;
1203 27488 return GET_CABAC(NON_INTER_FLAG + inc);
1204 }
1205
1206 184737 int ff_vvc_pred_mode_flag(VVCLocalContext *lc, const int is_chroma)
1207 {
1208 184737 const VVCFrameContext *fc = lc->fc;
1209 184737 const CodingUnit *cu = lc->cu;
1210 184737 uint8_t inc, left = MODE_INTER, top = MODE_INTER;
1211
1212 184737 get_left_top(lc, &left, &top, cu->x0, cu->y0, fc->tab.cpm[is_chroma], fc->tab.cpm[is_chroma]);
1213
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 184737 inc = left == MODE_INTRA || top == MODE_INTRA;
1214 184737 return GET_CABAC(PRED_MODE_FLAG + inc);
1215 }
1216
1217 ✗ int ff_vvc_pred_mode_plt_flag(VVCLocalContext *lc)
1218 {
1219 ✗ return GET_CABAC(PRED_MODE_PLT_FLAG);
1220 }
1221
1222 27878 int ff_vvc_intra_bdpcm_luma_flag(VVCLocalContext *lc)
1223 {
1224 27878 return GET_CABAC(INTRA_BDPCM_LUMA_FLAG);
1225 }
1226
1227 38 int ff_vvc_intra_bdpcm_luma_dir_flag(VVCLocalContext *lc)
1228 {
1229 38 return GET_CABAC(INTRA_BDPCM_LUMA_DIR_FLAG);
1230 }
1231
1232 24174 int ff_vvc_intra_bdpcm_chroma_flag(VVCLocalContext *lc)
1233 {
1234 24174 return GET_CABAC(INTRA_BDPCM_CHROMA_FLAG);
1235 }
1236
1237 3 int ff_vvc_intra_bdpcm_chroma_dir_flag(VVCLocalContext *lc)
1238 {
1239 3 return GET_CABAC(INTRA_BDPCM_CHROMA_DIR_FLAG);
1240 }
1241
1242 451292 int ff_vvc_cu_skip_flag(VVCLocalContext *lc, const uint8_t *cu_skip_flag)
1243 {
1244 451292 const int inc = get_inc(lc, cu_skip_flag);
1245 451292 return GET_CABAC(CU_SKIP_FLAG + inc);
1246 }
1247
1248 3032 int ff_vvc_pred_mode_ibc_flag(VVCLocalContext *lc, const int is_chroma)
1249 {
1250 3032 const VVCFrameContext *fc = lc->fc;
1251 3032 const CodingUnit *cu = lc->cu;
1252 3032 uint8_t left_mode = MODE_INTER, top_mode = MODE_INTER;
1253 int inc;
1254
1255 3032 get_left_top(lc, &left_mode, &top_mode, cu->x0, cu->y0, fc->tab.cpm[is_chroma], fc->tab.cpm[is_chroma]);
1256 3032 inc = (left_mode == MODE_IBC) + (top_mode == MODE_IBC);
1257 3032 return GET_CABAC(PRED_MODE_IBC_FLAG + inc);
1258 }
1259
1260 401168 int ff_vvc_intra_mip_flag(VVCLocalContext *lc, const uint8_t *intra_mip_flag)
1261 {
1262 401168 const int w = lc->cu->cb_width;
1263 401168 const int h = lc->cu->cb_height;
1264
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 401168 const int inc = (w > h * 2 || h > w * 2) ? 3 : get_inc(lc, intra_mip_flag);
1265 401168 return GET_CABAC(INTRA_MIP_FLAG + inc);
1266 }
1267
1268 97983 int ff_vvc_intra_mip_transposed_flag(VVCLocalContext *lc)
1269 {
1270 97983 return get_cabac_bypass(&lc->ep->cc);
1271 }
1272
1273 97983 int ff_vvc_intra_mip_mode(VVCLocalContext *lc)
1274 {
1275 97983 const int w = lc->cu->cb_width;
1276 97983 const int h = lc->cu->cb_height;
1277
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 185607 const int c_max = (w == 4 && h == 4) ? 15 :
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 87624 ((w == 4 || h == 4) || (w == 8 && h == 8)) ? 7: 5;
1279 97983 return truncated_binary_decode(lc, c_max);
1280 }
1281
1282 389011 int ff_vvc_intra_luma_ref_idx(VVCLocalContext *lc)
1283 {
1284 int i;
1285
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 437919 for (i = 0; i < 2; i++) {
1286
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 419157 if (!GET_CABAC(INTRA_LUMA_REF_IDX + i))
1287 370249 return i;
1288 }
1289 18762 return i;
1290 }
1291
1292 349125 int ff_vvc_intra_subpartitions_mode_flag(VVCLocalContext *lc)
1293 {
1294 349125 return GET_CABAC(INTRA_SUBPARTITIONS_MODE_FLAG);
1295 }
1296
1297 445017 enum IspType ff_vvc_isp_split_type(VVCLocalContext *lc, const int intra_subpartitions_mode_flag)
1298 {
1299
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 445017 if (!intra_subpartitions_mode_flag)
1300 383408 return ISP_NO_SPLIT;
1301 61609 return 1 + GET_CABAC(INTRA_SUBPARTITIONS_SPLIT_FLAG);
1302 }
1303
1304 414871 int ff_vvc_intra_luma_mpm_flag(VVCLocalContext *lc)
1305 {
1306 414871 return GET_CABAC(INTRA_LUMA_MPM_FLAG);
1307 }
1308
1309 311456 int ff_vvc_intra_luma_not_planar_flag(VVCLocalContext *lc, const int intra_subpartitions_mode_flag)
1310 {
1311
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 311456 return GET_CABAC(INTRA_LUMA_NOT_PLANAR_FLAG + !intra_subpartitions_mode_flag);
1312 }
1313
1314 171532 int ff_vvc_intra_luma_mpm_idx(VVCLocalContext *lc)
1315 {
1316 int i;
1317
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 318319 for (i = 0; i < 4 && get_cabac_bypass(&lc->ep->cc); i++)
1318 /* nothing */;
1319 171532 return i;
1320 }
1321
1322 103415 int ff_vvc_intra_luma_mpm_remainder(VVCLocalContext *lc)
1323 {
1324 103415 return truncated_binary_decode(lc, 60);
1325 }
1326
1327 188650 int ff_vvc_cclm_mode_flag(VVCLocalContext *lc)
1328 {
1329 188650 return GET_CABAC(CCLM_MODE_FLAG);
1330 }
1331
1332 82776 int ff_vvc_cclm_mode_idx(VVCLocalContext *lc)
1333 {
1334
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 82776 if (!GET_CABAC(CCLM_MODE_IDX))
1335 48258 return 0;
1336 34518 return get_cabac_bypass(&lc->ep->cc) + 1;
1337 }
1338
1339 120802 int ff_vvc_intra_chroma_pred_mode(VVCLocalContext *lc)
1340 {
1341
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 120802 if (!GET_CABAC(INTRA_CHROMA_PRED_MODE))
1342 89644 return 4;
1343 31158 return (get_cabac_bypass(&lc->ep->cc) << 1) | get_cabac_bypass(&lc->ep->cc);
1344 }
1345
1346 171688 int ff_vvc_general_merge_flag(VVCLocalContext *lc)
1347 {
1348 171688 return GET_CABAC(GENERAL_MERGE_FLAG);
1349 }
1350
1351 307833 static int get_inter_flag_inc(VVCLocalContext *lc, const int x0, const int y0)
1352 {
1353 307833 uint8_t left_merge = 0, top_merge = 0;
1354 307833 uint8_t left_affine = 0, top_affine = 0;
1355 307833 const VVCFrameContext *fc = lc->fc;
1356
1357 307833 get_left_top(lc, &left_merge, &top_merge, x0, y0, fc->tab.msf, fc->tab.msf);
1358 307833 get_left_top(lc, &left_affine, &top_affine, x0, y0, fc->tab.iaf, fc->tab.iaf);
1359
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 307833 return (left_merge || left_affine) + (top_merge + top_affine);
1360 }
1361
1362 281484 int ff_vvc_merge_subblock_flag(VVCLocalContext *lc)
1363 {
1364 281484 const int inc = get_inter_flag_inc(lc, lc->cu->x0, lc->cu->y0);
1365 281484 return GET_CABAC(MERGE_SUBBLOCK_FLAG + inc);
1366 }
1367
1368 48822 int ff_vvc_merge_subblock_idx(VVCLocalContext *lc, const int max_num_subblock_merge_cand)
1369 {
1370 int i;
1371
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 48822 if (!GET_CABAC(MERGE_SUBBLOCK_IDX))
1372 29760 return 0;
1373
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 34366 for (i = 1; i < max_num_subblock_merge_cand - 1 && get_cabac_bypass(&lc->ep->cc); i++)
1374 /* nothing */;
1375 19062 return i;
1376 }
1377
1378 215698 int ff_vvc_regular_merge_flag(VVCLocalContext *lc, const int cu_skip_flag)
1379 {
1380 215698 int inc = !cu_skip_flag;
1381 215698 return GET_CABAC(REGULAR_MERGE_FLAG + inc);
1382 }
1383
1384 250158 int ff_vvc_mmvd_merge_flag(VVCLocalContext *lc)
1385 {
1386 250158 return GET_CABAC(MMVD_MERGE_FLAG);
1387 }
1388
1389 54381 int ff_vvc_mmvd_cand_flag(VVCLocalContext *lc)
1390 {
1391 54381 return GET_CABAC(MMVD_CAND_FLAG);
1392 }
1393
1394 54381 static int mmvd_distance_idx_decode(VVCLocalContext *lc)
1395 {
1396 int i;
1397
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 54381 if (!GET_CABAC(MMVD_DISTANCE_IDX))
1398 14303 return 0;
1399
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 75691 for (i = 1; i < 7 && get_cabac_bypass(&lc->ep->cc); i++)
1400 /* nothing */;
1401 40078 return i;
1402 }
1403
1404 54381 static int mmvd_direction_idx_decode(VVCLocalContext *lc)
1405 {
1406 54381 return (get_cabac_bypass(&lc->ep->cc) << 1) | get_cabac_bypass(&lc->ep->cc);
1407 }
1408
1409 54381 void ff_vvc_mmvd_offset_coding(VVCLocalContext *lc, Mv *mmvd_offset, const int ph_mmvd_fullpel_only_flag)
1410 {
1411
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 54381 const int shift = ph_mmvd_fullpel_only_flag ? 4 : 2;
1412 54381 const int mmvd_distance = 1 << (mmvd_distance_idx_decode(lc) + shift);
1413 54381 const int mmvd_direction_idx = mmvd_direction_idx_decode(lc);
1414 54381 const int mmvd_signs[][2] = { {1, 0}, {-1, 0}, {0, 1}, {0, -1} };
1415 54381 mmvd_offset->x = mmvd_distance * mmvd_signs[mmvd_direction_idx][0];
1416 54381 mmvd_offset->y = mmvd_distance * mmvd_signs[mmvd_direction_idx][1];
1417 54381 }
1418
1419 216458 static PredMode get_luma_pred_mode(VVCLocalContext *lc)
1420 {
1421 216458 const VVCFrameContext *fc = lc->fc;
1422 216458 const CodingUnit *cu = lc->cu;
1423 PredMode pred_mode;
1424
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 216458 if (cu->tree_type != DUAL_TREE_CHROMA) {
1426 216458 pred_mode = cu->pred_mode;
1427 } else {
1428 ✗ const int x_cb = cu->x0 >> fc->ps.sps->min_cb_log2_size_y;
1429 ✗ const int y_cb = cu->y0 >> fc->ps.sps->min_cb_log2_size_y;
1430 ✗ const int min_cb_width = fc->ps.pps->min_cb_width;
1431 ✗ pred_mode = SAMPLE_CTB(fc->tab.cpm[0], x_cb, y_cb);
1432 }
1433 216458 return pred_mode;
1434 }
1435
1436 216458 int ff_vvc_merge_idx(VVCLocalContext *lc)
1437 {
1438 216458 const VVCSPS *sps = lc->fc->ps.sps;
1439 216458 const int is_ibc = get_luma_pred_mode(lc) == MODE_IBC;
1440
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 216458 const int c_max = (is_ibc ? sps->max_num_ibc_merge_cand : sps->max_num_merge_cand) - 1;
1441 int i;
1442
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 216458 if (!GET_CABAC(MERGE_IDX))
1444 128088 return 0;
1445
1446
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 179997 for (i = 1; i < c_max && get_cabac_bypass(&lc->ep->cc); i++)
1447 /* nothing */;
1448 88370 return i;
1449 }
1450
1451 24737 int ff_vvc_merge_gpm_partition_idx(VVCLocalContext *lc)
1452 {
1453 24737 int i = 0;
1454
1455
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 173159 for (int j = 0; j < 6; j++)
1456 148422 i = (i << 1) | get_cabac_bypass(&lc->ep->cc);
1457
1458 24737 return i;
1459 }
1460
1461 49474 int ff_vvc_merge_gpm_idx(VVCLocalContext *lc, const int idx)
1462 {
1463 49474 const int c_max = lc->fc->ps.sps->max_num_gpm_merge_cand - idx - 1;
1464 int i;
1465
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 49474 if (!GET_CABAC(MERGE_IDX))
1467 27851 return 0;
1468
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 40962 for (i = 1; i < c_max && get_cabac_bypass(&lc->ep->cc); i++)
1470 /* nothing */;
1471
1472 21623 return i;
1473 }
1474
1475 18681 int ff_vvc_ciip_flag(VVCLocalContext *lc)
1476 {
1477 18681 return GET_CABAC(CIIP_FLAG);
1478 }
1479
1480 59578 PredFlag ff_vvc_pred_flag(VVCLocalContext *lc, const int is_b)
1481 {
1482 59578 const int w = lc->cu->cb_width;
1483 59578 const int h = lc->cu->cb_height;
1484
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 59578 if (!is_b)
1485 1938 return PF_L0;
1486
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 57640 if (w + h > 12) {
1487 52067 const int log2 = av_log2(w) + av_log2(h);
1488 52067 const int inc = 7 - ((1 + log2)>>1);
1489
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 52067 if (GET_CABAC(INTER_PRED_IDC + inc))
1490 17911 return PF_BI;
1491 }
1492 39729 return PF_L0 + GET_CABAC(INTER_PRED_IDC + 5);
1493 }
1494
1495 26349 int ff_vvc_inter_affine_flag(VVCLocalContext *lc)
1496 {
1497 26349 const int inc = get_inter_flag_inc(lc, lc->cu->x0, lc->cu->y0);
1498 26349 return GET_CABAC(INTER_AFFINE_FLAG + inc);
1499 }
1500
1501 9109 int ff_vvc_cu_affine_type_flag(VVCLocalContext *lc)
1502 {
1503 9109 return GET_CABAC(CU_AFFINE_TYPE_FLAG);
1504 }
1505
1506 11430 int ff_vvc_sym_mvd_flag(VVCLocalContext *lc)
1507 {
1508 11430 return GET_CABAC(SYM_MVD_FLAG);
1509 }
1510
1511 49376 int ff_vvc_ref_idx_lx(VVCLocalContext *lc, const uint8_t nb_refs)
1512 {
1513 49376 const int c_max = nb_refs - 1;
1514 49376 const int max_ctx = FFMIN(c_max, 2);
1515 49376 int i = 0;
1516
1517
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 61230 while (i < max_ctx && GET_CABAC(REF_IDX_LX + i))
1518 11854 i++;
1519
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 49376 if (i == 2) {
1520
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 1017 while (i < c_max && get_cabac_bypass(&lc->ep->cc))
1521 363 i++;
1522 }
1523 49376 return i;
1524 }
1525
1526 167130 int ff_vvc_abs_mvd_greater0_flag(VVCLocalContext *lc)
1527 {
1528 167130 return GET_CABAC(ABS_MVD_GREATER0_FLAG);
1529 }
1530
1531 116621 int ff_vvc_abs_mvd_greater1_flag(VVCLocalContext *lc)
1532 {
1533 116621 return GET_CABAC(ABS_MVD_GREATER1_FLAG);
1534 }
1535
1536 68543 int ff_vvc_abs_mvd_minus2(VVCLocalContext *lc)
1537 {
1538 68543 return limited_kth_order_egk_decode(&lc->ep->cc, 1, 15, 17);
1539 }
1540
1541 116621 int ff_vvc_mvd_sign_flag(VVCLocalContext *lc)
1542 {
1543 116621 return get_cabac_bypass(&lc->ep->cc);
1544 }
1545
1546 77489 int ff_vvc_mvp_lx_flag(VVCLocalContext *lc)
1547 {
1548 77489 return GET_CABAC(MVP_LX_FLAG);
1549 }
1550
1551 53921 static int amvr_flag(VVCLocalContext *lc, const int inter_affine_flag)
1552 {
1553 53921 return GET_CABAC(AMVR_FLAG + inter_affine_flag);
1554 }
1555
1556 32915 static int amvr_precision_idx(VVCLocalContext *lc, const int inc, const int c_max)
1557 {
1558 32915 int i = 0;
1559
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 32915 if (!GET_CABAC(AMVR_PRECISION_IDX + inc))
1560 7266 return 0;
1561 25649 i++;
1562
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 25649 if (i < c_max && GET_CABAC(AMVR_PRECISION_IDX + 1))
1563 3590 i++;
1564 25649 return i;
1565 }
1566
1567 60656 int ff_vvc_amvr_shift(VVCLocalContext *lc, const int inter_affine_flag,
1568 const PredMode pred_mode, const int has_amvr_flag)
1569 {
1570 60656 int amvr_shift = 2;
1571
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 60656 if (has_amvr_flag) {
1572
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 54999 if (pred_mode == MODE_IBC || amvr_flag(lc, inter_affine_flag)) {
1573 int idx;
1574
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 32915 if (inter_affine_flag) {
1575 3666 idx = amvr_precision_idx(lc, 2, 1);
1576 3666 amvr_shift = idx * 4;
1577
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 29249 } else if (pred_mode == MODE_IBC) {
1578 1078 idx = amvr_precision_idx(lc, 1, 1);
1579 1078 amvr_shift = 4 + idx * 2;
1580 } else {
1581 static const int shifts[] = {3, 4, 6};
1582 28171 idx = amvr_precision_idx(lc, 0, 2);
1583 28171 amvr_shift = shifts[idx];
1584 }
1585 }
1586 }
1587 60656 return amvr_shift;
1588 }
1589
1590 11078 int ff_vvc_bcw_idx(VVCLocalContext *lc, const int no_backward_pred_flag)
1591 {
1592
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 11078 const int c_max = no_backward_pred_flag ? 4 : 2;
1593 11078 int i = 1;
1594
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 11078 if (!GET_CABAC(BCW_IDX))
1595 6514 return 0;
1596
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 7149 while (i < c_max && get_cabac_bypass(&lc->ep->cc))
1597 2585 i++;
1598 4564 return i;
1599 }
1600
1601 340077 int ff_vvc_tu_cb_coded_flag(VVCLocalContext *lc)
1602 {
1603 340077 return GET_CABAC(TU_CB_CODED_FLAG + lc->cu->bdpcm_flag[1]);
1604 }
1605
1606 340077 int ff_vvc_tu_cr_coded_flag(VVCLocalContext *lc, int tu_cb_coded_flag)
1607 {
1608
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 340077 return GET_CABAC(TU_CR_CODED_FLAG + (lc->cu->bdpcm_flag[1] ? 2 : tu_cb_coded_flag));
1609 }
1610
1611 713105 int ff_vvc_tu_y_coded_flag(VVCLocalContext *lc)
1612 {
1613 713105 const CodingUnit *cu = lc->cu;
1614 int inc;
1615
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 713105 if (cu->bdpcm_flag[0])
1616 38 inc = 1;
1617
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 713067 else if (cu->isp_split_type == ISP_NO_SPLIT)
1618 522809 inc = 0;
1619 else
1620 190258 inc = 2 + lc->parse.prev_tu_cbf_y;
1621 713105 lc->parse.prev_tu_cbf_y = GET_CABAC(TU_Y_CODED_FLAG + inc);
1622 713105 return lc->parse.prev_tu_cbf_y;
1623 }
1624
1625 859 int ff_vvc_cu_qp_delta_abs(VVCLocalContext *lc)
1626 {
1627 int v, i, k;
1628
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✓ Branch 2 taken 190 times.
 859 if (!GET_CABAC(CU_QP_DELTA_ABS))
1629 669 return 0;
1630
1631 // prefixVal
1632
4/4
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 272 for (v = 1; v < 5 && GET_CABAC(CU_QP_DELTA_ABS + 1); v++)
1633 /* nothing */;
1634
2/2
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✓ Branch 1 taken 3 times.
 190 if (v < 5)
1635 187 return v;
1636
1637 // 9.3.3.5 k-th order Exp-Golomb binarization process
1638 // suffixVal
1639
1640 // CuQpDeltaVal shall in the range of −( 32 + QpBdOffset / 2 ) to +( 31 + QpBdOffset / 2 )
1641 // so k = 6 should enough
1642
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 3 for (k = 0; k < 6 && get_cabac_bypass(&lc->ep->cc); k++)
1643 /* nothing */;
1644 3 i = (1 << k) - 1;
1645 3 v = 0;
1646
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 3 while (k--)
1647 ✗ v = (v << 1) + get_cabac_bypass(&lc->ep->cc);
1648 3 v += i;
1649
1650 3 return v + 5;
1651 }
1652
1653 190 int ff_vvc_cu_qp_delta_sign_flag(VVCLocalContext *lc)
1654 {
1655 190 return get_cabac_bypass(&lc->ep->cc);
1656 }
1657
1658 ✗ int ff_vvc_cu_chroma_qp_offset_flag(VVCLocalContext *lc)
1659 {
1660 ✗ return GET_CABAC(CU_CHROMA_QP_OFFSET_FLAG);
1661 }
1662
1663 ✗ int ff_vvc_cu_chroma_qp_offset_idx(VVCLocalContext *lc)
1664 {
1665 ✗ const int c_max = lc->fc->ps.pps->r->pps_chroma_qp_offset_list_len_minus1;
1666 int i;
1667 ✗ for (i = 0; i < c_max && GET_CABAC(CU_CHROMA_QP_OFFSET_IDX); i++)
1668 /* nothing */;
1669 ✗ return i;
1670 }
1671
1672 1669244 static av_always_inline int last_significant_coeff_xy_prefix(VVCLocalContext *lc,
1673 const int log2_tb_size, const int log2_zo_tb_size, const int c_idx, const int ctx)
1674 {
1675 1669244 int i = 0;
1676 1669244 int max = (log2_zo_tb_size << 1) - 1;
1677 int ctx_offset, ctx_shift;
1678
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 1669244 if (!log2_tb_size)
1679 15823 return 0;
1680
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 1653421 if (!c_idx) {
1681 1257327 const int offset_y[] = {0, 0, 3, 6, 10, 15};
1682 1257327 ctx_offset = offset_y[log2_tb_size - 1];
1683 1257327 ctx_shift = (log2_tb_size + 1) >> 2;
1684 } else {
1685 396094 const int shifts[] = {0, 0, 0, 1, 2, 2, 2};
1686 396094 ctx_offset = 20;
1687 396094 ctx_shift = shifts[log2_tb_size];
1688 }
1689
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 4644188 while (i < max && GET_CABAC(ctx + (i >> ctx_shift) + ctx_offset))
1690 2990767 i++;
1691 1653421 return i;
1692 }
1693
1694 834622 static av_always_inline int last_significant_coeff_x_prefix_decode(VVCLocalContext *lc,
1695 const int log2_tb_width, const int log2_zo_tb_width, const int c_idx)
1696 {
1697 834622 return last_significant_coeff_xy_prefix(lc, log2_tb_width, log2_zo_tb_width, c_idx, LAST_SIG_COEFF_X_PREFIX);
1698 }
1699
1700 834622 static av_always_inline int last_significant_coeff_y_prefix_decode(VVCLocalContext *lc,
1701 const int log2_tb_height, const int log2_zo_tb_height, const int c_idx)
1702 {
1703 834622 return last_significant_coeff_xy_prefix(lc, log2_tb_height, log2_zo_tb_height, c_idx, LAST_SIG_COEFF_Y_PREFIX);
1704 }
1705
1706 328602 static av_always_inline int last_sig_coeff_suffix_decode(VVCLocalContext *lc,
1707 const int last_significant_coeff_y_prefix)
1708 {
1709 328602 const int length = (last_significant_coeff_y_prefix >> 1) - 1;
1710 328602 int value = get_cabac_bypass(&lc->ep->cc);
1711
1712
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 456597 for (int i = 1; i < length; i++)
1713 127995 value = (value << 1) | get_cabac_bypass(&lc->ep->cc);
1714 328602 return value;
1715 }
1716
1717 112278 int ff_vvc_tu_joint_cbcr_residual_flag(VVCLocalContext *lc, const int tu_cb_coded_flag, const int tu_cr_coded_flag)
1718 {
1719 112278 return GET_CABAC(TU_JOINT_CBCR_RESIDUAL_FLAG + 2 * tu_cb_coded_flag + tu_cr_coded_flag - 1);
1720 }
1721
1722 636882 int ff_vvc_transform_skip_flag(VVCLocalContext *lc, const int inc)
1723 {
1724 636882 return GET_CABAC(TRANSFORM_SKIP_FLAG + inc);
1725 }
1726
1727 //9.3.4.2.7 Derivation process for the variables locNumSig, locSumAbsPass1
1728 34775836 static int get_local_sum(const int *level, const int w, const int h,
1729 const int xc, const int yc, const int hist_value)
1730 {
1731 34775836 int loc_sum = 3 * hist_value;
1732 34775836 level += w * yc + xc;
1733
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 34775836 if (xc < w - 1) {
1734 33451008 loc_sum += level[1];
1735
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 33451008 if (xc < w - 2)
1736 31533547 loc_sum += level[2] - hist_value;
1737
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 33451008 if (yc < h - 1)
1738 30871932 loc_sum += level[w + 1] - hist_value;
1739 }
1740
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 34775836 if (yc < h - 1) {
1741 32196619 loc_sum += level[w];
1742
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 32196619 if (yc < h - 2)
1743 29176080 loc_sum += level[w << 1] - hist_value;
1744 }
1745 34775836 return loc_sum;
1746 }
1747
1748 //9.3.4.2.7 Derivation process for the variables locNumSig, locSumAbsPass1
1749 897048 static int get_local_sum_ts(const int *level, const int w, const int h, const int xc, const int yc)
1750 {
1751 897048 int loc_sum = 0;
1752 897048 level += w * yc + xc;
1753
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 897048 if (xc > 0)
1754 785022 loc_sum += level[-1];
1755
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 897048 if (yc > 0)
1756 784835 loc_sum += level[-w];
1757 897048 return loc_sum;
1758 }
1759
1760 9908971 static int get_gtx_flag_inc(const ResidualCoding* rc, const int xc, const int yc, const int last)
1761 {
1762 9908971 const TransformBlock *tb = rc->tb;
1763 int inc;
1764
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 9908971 if (last) {
1765 834622 const int incs[] = {0, 21, 21};
1766 834622 inc = incs[tb->c_idx];
1767 } else {
1768 9074349 const int d = xc + yc;
1769 9074349 const int local_sum_sig = get_local_sum(rc->sig_coeff_flag,
1770 9074349 tb->tb_width,tb->tb_height, xc, yc, rc->hist_value);
1771 9074349 const int loc_sum_abs_pass1 = get_local_sum(rc->abs_level_pass1,
1772 9074349 tb->tb_width, tb->tb_height, xc, yc, rc->hist_value);
1773 9074349 const int offset = FFMIN(loc_sum_abs_pass1 - local_sum_sig, 4);
1774
1775
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 9074349 if (!tb->c_idx)
1776
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 6702751 inc = 1 + offset + (!d ? 15 : (d < 3 ? 10 : (d < 10 ? 5 : 0)));
1777 else
1778
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 2371598 inc = 22 + offset + (!d ? 5 : 0);
1779 }
1780 9908971 return inc;
1781 }
1782
1783 11632064 static int abs_level_gtx_flag_decode(VVCLocalContext *lc, const int inc)
1784 {
1785 11632064 return GET_CABAC(ABS_LEVEL_GTX_FLAG + inc);
1786 }
1787
1788 1723093 static int par_level_flag_decode(VVCLocalContext *lc, const int inc)
1789 {
1790 1723093 return GET_CABAC(PAR_LEVEL_FLAG + inc);
1791 }
1792
1793 90239 static int par_level_flag_ts_decode(VVCLocalContext *lc)
1794 {
1795 90239 const int inc = 32;
1796 90239 return GET_CABAC(PAR_LEVEL_FLAG + inc);
1797 }
1798
1799 870105 static int sb_coded_flag_decode(VVCLocalContext *lc, const uint8_t *sb_coded_flag,
1800 const ResidualCoding *rc, const int xs, const int ys)
1801 {
1802 870105 const H266RawSliceHeader *rsh = lc->sc->sh.r;
1803 870105 const TransformBlock *tb = rc->tb;
1804 870105 const int w = rc->width_in_sbs;
1805 870105 const int h = rc->height_in_sbs;
1806 int inc;
1807
1808
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 870105 if (tb->ts && !rsh->sh_ts_residual_coding_disabled_flag) {
1809
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 131724 const int left = xs > 0 ? sb_coded_flag[-1] : 0;
1810
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 131724 const int above = ys > 0 ? sb_coded_flag[-w] : 0;
1811 131724 inc = left + above + 4;
1812 } else {
1813
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 738381 const int right = (xs < w - 1) ? sb_coded_flag[1] : 0;
1814
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 738381 const int bottom = (ys < h - 1) ? sb_coded_flag[w] : 0;
1815
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 738381 inc = (right | bottom) + (tb->c_idx ? 2 : 0);
1816 }
1817 870105 return GET_CABAC(SB_CODED_FLAG + inc);
1818 }
1819
1820 16953808 static int sig_coeff_flag_decode(VVCLocalContext *lc, const ResidualCoding* rc, const int xc, const int yc)
1821 {
1822 16953808 const H266RawSliceHeader *rsh = lc->sc->sh.r;
1823 16953808 const TransformBlock *tb = rc->tb;
1824 int inc;
1825
1826
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 16953808 if (tb->ts && !rsh->sh_ts_residual_coding_disabled_flag) {
1827 897048 const int local_num_sig = get_local_sum_ts(rc->sig_coeff_flag, tb->tb_width, tb->tb_height, xc, yc);
1828 897048 inc = 60 + local_num_sig;
1829 } else {
1830 16056760 const int d = xc + yc;
1831 16056760 const int loc_sum_abs_pass1 = get_local_sum(rc->abs_level_pass1,
1832 16056760 tb->tb_width, tb->tb_height, xc, yc, 0);
1833
1834
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 16056760 if (!tb->c_idx) {
1835
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 11637577 inc = 12 * FFMAX(0, rc->qstate - 1) + FFMIN((loc_sum_abs_pass1 + 1) >> 1, 3) + ((d < 2) ? 8 : (d < 5 ? 4 : 0));
1836 } else {
1837
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 4419183 inc = 36 + 8 * FFMAX(0, rc->qstate - 1) + FFMIN((loc_sum_abs_pass1 + 1) >> 1, 3) + (d < 2 ? 4 : 0);
1838 }
1839 }
1840 16953808 return GET_CABAC(SIG_COEFF_FLAG + inc);
1841 }
1842
1843 570378 static int abs_get_rice_param(VVCLocalContext *lc, const ResidualCoding* rc,
1844 const int xc, const int yc, const int base_level)
1845 {
1846 570378 const VVCSPS *sps = lc->fc->ps.sps;
1847 570378 const TransformBlock* tb = rc->tb;
1848 570378 const int rice_params[] = {
1849 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 2, 2,
1850 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3,
1851 };
1852 int loc_sum_abs;
1853 int shift_val;
1854
1855 570378 loc_sum_abs = get_local_sum(rc->abs_level, tb->tb_width, tb->tb_height, xc,
1856 570378 yc, rc->hist_value);
1857
1858
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 570378 if (!sps->r->sps_rrc_rice_extension_flag) {
1859 570378 shift_val = 0;
1860 } else {
1861 ✗ shift_val = (av_log2(FFMAX(FFMIN(loc_sum_abs, 2048), 8)) - 3) & ~1;
1862 }
1863
1864 570378 loc_sum_abs = av_clip_uintp2((loc_sum_abs >> shift_val) - base_level * 5, 5);
1865
1866 570378 return rice_params[loc_sum_abs] + shift_val;
1867 }
1868
1869 621045 static int abs_decode(VVCLocalContext *lc, const int c_rice_param)
1870 {
1871 621045 const VVCSPS *sps = lc->fc->ps.sps;
1872 621045 const int MAX_BIN = 6;
1873 621045 int prefix = 0;
1874 621045 int suffix = 0;
1875
1876
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 1225051 while (prefix < MAX_BIN && get_cabac_bypass(&lc->ep->cc))
1877 604006 prefix++;
1878
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 621045 if (prefix < MAX_BIN) {
1879
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 934135 for (int i = 0; i < c_rice_param; i++) {
1880 327805 suffix = (suffix << 1) | get_cabac_bypass(&lc->ep->cc);
1881 }
1882 } else {
1883 14715 suffix = limited_kth_order_egk_decode(&lc->ep->cc,
1884 c_rice_param + 1,
1885 14715 26 - sps->log2_transform_range,
1886 14715 sps->log2_transform_range);
1887 }
1888 621045 return suffix + (prefix << c_rice_param);
1889 }
1890
1891 315475 static int abs_remainder_decode(VVCLocalContext *lc, const ResidualCoding* rc, const int xc, const int yc)
1892 {
1893 315475 const VVCSPS *sps = lc->fc->ps.sps;
1894 315475 const H266RawSliceHeader *rsh = lc->sc->sh.r;
1895 315475 const int base_level[][2][2] = {
1896 { {4, 4}, {4, 4} },
1897 { {3, 2}, {2, 1} }
1898 };
1899 315475 const int c_rice_param = abs_get_rice_param(lc, rc, xc, yc,
1900 315475 base_level[sps->r->sps_rrc_rice_extension_flag][sps->bit_depth > 12][IS_I(rsh)]);
1901 315475 const int rem = abs_decode(lc, c_rice_param);
1902
1903 315475 return rem;
1904 }
1905
1906 50667 static int abs_remainder_ts_decode(VVCLocalContext *lc, const ResidualCoding* rc, const int xc, const int yc)
1907 {
1908 50667 const H266RawSliceHeader *rsh = lc->sc->sh.r;
1909 50667 const int c_rice_param = rsh->sh_ts_residual_coding_rice_idx_minus1 + 1;
1910 50667 const int rem = abs_decode(lc, c_rice_param);
1911
1912 50667 return rem;
1913 }
1914
1915 10129588 static int coeff_sign_flag_decode(VVCLocalContext *lc)
1916 {
1917 10129588 return get_cabac_bypass(&lc->ep->cc);
1918 }
1919
1920 //9.3.4.2.10 Derivation process of ctxInc for the syntax element coeff_sign_flag for transform skip mode
1921 229595 static int coeff_sign_flag_ts_decode(VVCLocalContext *lc, const CodingUnit *cu, const ResidualCoding *rc, const int xc, const int yc)
1922 {
1923 229595 const TransformBlock *tb = rc->tb;
1924 229595 const int w = tb->tb_width;
1925 229595 const int *level = rc->coeff_sign_level + yc * w + xc;
1926
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 229595 const int left_sign = xc ? level[-1] : 0;
1927
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 229595 const int above_sign = yc ? level[-w] : 0;
1928 229595 const int bdpcm_flag = cu->bdpcm_flag[tb->c_idx];
1929 int inc;
1930
1931
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 229595 if (left_sign == -above_sign)
1932
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 83291 inc = bdpcm_flag ? 3 : 0;
1933
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 146304 else if (left_sign >= 0 && above_sign >= 0)
1934
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 60312 inc = bdpcm_flag ? 4 : 1;
1935 else
1936
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 85992 inc = bdpcm_flag ? 5 : 2;
1937 229595 return GET_CABAC(COEFF_SIGN_FLAG + inc);
1938 }
1939
1940 229595 static int abs_level_gt1_flag_ts_decode(VVCLocalContext *lc, const CodingUnit *cu, const ResidualCoding *rc, const int xc, const int yc)
1941 {
1942 229595 const TransformBlock *tb = rc->tb;
1943 229595 const int *sig_coeff_flag = rc->sig_coeff_flag + yc * tb->tb_width + xc;
1944 int inc;
1945
1946
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 229595 if (cu->bdpcm_flag[tb->c_idx]) {
1947 33 inc = 67;
1948 } else {
1949
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 229562 const int l = xc > 0 ? sig_coeff_flag[-1] : 0;
1950
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 229562 const int a = yc > 0 ? sig_coeff_flag[-tb->tb_width] : 0;
1951 229562 inc = 64 + a + l;
1952 }
1953 229595 return GET_CABAC(ABS_LEVEL_GTX_FLAG + inc);
1954 }
1955
1956 162254 static int abs_level_gtx_flag_ts_decode(VVCLocalContext *lc, const int j)
1957 {
1958 162254 const int inc = 67 + j;
1959 162254 return GET_CABAC(ABS_LEVEL_GTX_FLAG + inc);
1960 }
1961
1962 static const uint8_t qstate_translate_table[][2] = {
1963 { 0, 2 }, { 2, 0 }, { 1, 3 }, { 3, 1 }
1964 };
1965
1966 254903 static int dec_abs_level_decode(VVCLocalContext *lc, const ResidualCoding *rc,
1967 const int xc, const int yc, int *abs_level)
1968 {
1969 254903 const int c_rice_param = abs_get_rice_param(lc, rc, xc, yc, 0);
1970 254903 const int dec_abs_level = abs_decode(lc, c_rice_param);
1971
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 254903 const int zero_pos = (rc->qstate < 2 ? 1 : 2) << c_rice_param;
1972
1973 254903 *abs_level = 0;
1974
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 254903 if (dec_abs_level != zero_pos) {
1975 231651 *abs_level = dec_abs_level;
1976
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 231651 if (dec_abs_level < zero_pos)
1977 150928 *abs_level += 1;
1978 }
1979 254903 return dec_abs_level;
1980 }
1981
1982 570378 static void ep_update_hist(EntryPoint *ep, ResidualCoding *rc,
1983 const int remainder, const int addin)
1984 {
1985 570378 int *stat = ep->stat_coeff + rc->tb->c_idx;
1986
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 570378 if (rc->update_hist && remainder > 0) {
1987 ✗ *stat = (*stat + av_log2(remainder) + addin) >> 1;
1988 ✗ rc->update_hist = 0;
1989 }
1990 570378 }
1991
1992 863219 static void init_residual_coding(const VVCLocalContext *lc, ResidualCoding *rc,
1993 const int log2_zo_tb_width, const int log2_zo_tb_height,
1994 TransformBlock *tb)
1995 {
1996 863219 const VVCSPS *sps = lc->fc->ps.sps;
1997
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 863219 int log2_sb_w = (FFMIN(log2_zo_tb_width, log2_zo_tb_height ) < 2 ? 1 : 2 );
1998 863219 int log2_sb_h = log2_sb_w;
1999
2000
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 863219 if ( log2_zo_tb_width + log2_zo_tb_height > 3 ) {
2001
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 861484 if ( log2_zo_tb_width < 2 ) {
2002 19423 log2_sb_w = log2_zo_tb_width;
2003 19423 log2_sb_h = 4 - log2_sb_w;
2004
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 842061 } else if ( log2_zo_tb_height < 2 ) {
2005 55954 log2_sb_h = log2_zo_tb_height;
2006 55954 log2_sb_w = 4 - log2_sb_h;
2007 }
2008 }
2009 863219 rc->log2_sb_w = log2_sb_w;
2010 863219 rc->log2_sb_h = log2_sb_h;
2011 863219 rc->num_sb_coeff = 1 << (log2_sb_w + log2_sb_h);
2012 863219 rc->last_sub_block = ( 1 << ( log2_zo_tb_width + log2_zo_tb_height - (log2_sb_w + log2_sb_h))) - 1;
2013
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 863219 rc->hist_value = sps->r->sps_persistent_rice_adaptation_enabled_flag ? (1 << lc->ep->stat_coeff[tb->c_idx]) : 0;
2014 863219 rc->update_hist = sps->r->sps_persistent_rice_adaptation_enabled_flag ? 1 : 0;
2015 863219 rc->rem_bins_pass1 = (( 1 << ( log2_zo_tb_width + log2_zo_tb_height)) * 7 ) >> 2;
2016
2017
2018 863219 rc->sb_scan_x_off = ff_vvc_diag_scan_x[log2_zo_tb_width - log2_sb_w][log2_zo_tb_height - log2_sb_h];
2019 863219 rc->sb_scan_y_off = ff_vvc_diag_scan_y[log2_zo_tb_width - log2_sb_w][log2_zo_tb_height - log2_sb_h];
2020
2021 863219 rc->scan_x_off = ff_vvc_diag_scan_x[log2_sb_w][log2_sb_h];
2022 863219 rc->scan_y_off = ff_vvc_diag_scan_y[log2_sb_w][log2_sb_h];
2023
2024 863219 rc->infer_sb_cbf = 1;
2025
2026 863219 rc->width_in_sbs = (1 << (log2_zo_tb_width - log2_sb_w));
2027 863219 rc->height_in_sbs = (1 << (log2_zo_tb_height - log2_sb_h));
2028 863219 rc->nb_sbs = rc->width_in_sbs * rc->height_in_sbs;
2029
2030 863219 rc->last_scan_pos = rc->num_sb_coeff;
2031 863219 rc->qstate = 0;
2032
2033 863219 rc->tb = tb;
2034 863219 }
2035
2036 144825 static int residual_ts_coding_subblock(VVCLocalContext *lc, ResidualCoding* rc, const int i)
2037 {
2038 144825 const CodingUnit *cu = lc->cu;
2039 144825 TransformBlock *tb = rc->tb;
2040 144825 const int bdpcm_flag = cu->bdpcm_flag[tb->c_idx];
2041 144825 const int xs = rc->sb_scan_x_off[i];
2042 144825 const int ys = rc->sb_scan_y_off[i];
2043 144825 uint8_t *sb_coded_flag = rc->sb_coded_flag + ys * rc->width_in_sbs + xs;
2044 144825 int infer_sb_sig_coeff_flag = 1;
2045 144825 int last_scan_pos_pass1 = -1, last_scan_pos_pass2 = -1, n;
2046 int abs_level_gtx_flag[MAX_SUB_BLOCK_SIZE * MAX_SUB_BLOCK_SIZE];
2047 int abs_level_pass2[MAX_SUB_BLOCK_SIZE * MAX_SUB_BLOCK_SIZE]; ///< AbsLevelPass2
2048
2049
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 144825 if (i != rc->last_sub_block || !rc->infer_sb_cbf)
2050 131724 *sb_coded_flag = sb_coded_flag_decode(lc, sb_coded_flag, rc, xs, ys);
2051 else
2052 13101 *sb_coded_flag = 1;
2053
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 144825 if (*sb_coded_flag && i < rc->last_sub_block)
2054 36938 rc->infer_sb_cbf = 0;
2055
2056 //first scan pass
2057
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 2437481 for (n = 0; n < rc->num_sb_coeff && rc->rem_bins_pass1 >= 4; n++) {
2058 2292656 const int xc = (xs << rc->log2_sb_w) + rc->scan_x_off[n];
2059 2292656 const int yc = (ys << rc->log2_sb_h) + rc->scan_y_off[n];
2060 2292656 const int off = yc * tb->tb_width + xc;
2061 2292656 int *sig_coeff_flag = rc->sig_coeff_flag + off;
2062 2292656 int *abs_level_pass1 = rc->abs_level_pass1 + off;
2063 2292656 int *coeff_sign_level = rc->coeff_sign_level + off;
2064 2292656 int par_level_flag = 0;
2065
2066 2292656 abs_level_gtx_flag[n] = 0;
2067 2292656 last_scan_pos_pass1 = n;
2068
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 2292656 if (*sb_coded_flag && (n != rc->num_sb_coeff - 1 || !infer_sb_sig_coeff_flag)) {
2069 897048 *sig_coeff_flag = sig_coeff_flag_decode(lc, rc, xc, yc);
2070 897048 rc->rem_bins_pass1--;
2071
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 897048 if (*sig_coeff_flag)
2072 226531 infer_sb_sig_coeff_flag = 0;
2073 } else {
2074
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 1395608 *sig_coeff_flag = (n == rc->num_sb_coeff - 1) && infer_sb_sig_coeff_flag && *sb_coded_flag;
2075 }
2076 2292656 *coeff_sign_level = 0;
2077
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 2292656 if (*sig_coeff_flag) {
2078 229595 *coeff_sign_level = 1 - 2 * coeff_sign_flag_ts_decode(lc, cu, rc, xc, yc);
2079 229595 abs_level_gtx_flag[n] = abs_level_gt1_flag_ts_decode(lc, cu, rc, xc, yc);
2080 229595 rc->rem_bins_pass1 -= 2;
2081
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 229595 if (abs_level_gtx_flag[n]) {
2082 90239 par_level_flag = par_level_flag_ts_decode(lc);
2083 90239 rc->rem_bins_pass1--;
2084 }
2085 }
2086 2292656 *abs_level_pass1 = *sig_coeff_flag + par_level_flag + abs_level_gtx_flag[n];
2087 }
2088
2089 //greater than x scan pass
2090
4/4
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 2378303 for (n = 0; n < rc->num_sb_coeff && rc->rem_bins_pass1 >= 4; n++) {
2091 2233478 const int xc = (xs << rc->log2_sb_w) + rc->scan_x_off[n];
2092 2233478 const int yc = (ys << rc->log2_sb_h) + rc->scan_y_off[n];
2093 2233478 const int off = yc * tb->tb_width + xc;
2094
2095 2233478 abs_level_pass2[n] = rc->abs_level_pass1[off];
2096
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 2395732 for (int j = 1; j < 5 && abs_level_gtx_flag[n]; j++) {
2097 162254 abs_level_gtx_flag[n] = abs_level_gtx_flag_ts_decode(lc, j);
2098 162254 abs_level_pass2[n] += abs_level_gtx_flag[n] << 1;
2099 162254 rc->rem_bins_pass1--;
2100 }
2101 2233478 last_scan_pos_pass2 = n;
2102 }
2103
2104 /* remainder scan pass */
2105
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 2461737 for (n = 0; n < rc->num_sb_coeff; n++) {
2106 2316912 const int xc = (xs << rc->log2_sb_w) + rc->scan_x_off[n];
2107 2316912 const int yc = (ys << rc->log2_sb_h) + rc->scan_y_off[n];
2108 2316912 const int off = yc * tb->tb_width + xc;
2109 2316912 const int *abs_level_pass1 = rc->abs_level_pass1 + off;
2110 2316912 int *abs_level = rc->abs_level + off;
2111 2316912 int *coeff_sign_level = rc->coeff_sign_level + off;
2112 2316912 int abs_remainder = 0;
2113
2114
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 2316912 if ((n <= last_scan_pos_pass2 && abs_level_pass2[n] >= 10) ||
2115
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 83434 (n > last_scan_pos_pass2 && n <= last_scan_pos_pass1 &&
2116
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 2298613 *abs_level_pass1 >= 2) ||
2117
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 24256 (n > last_scan_pos_pass1 && *sb_coded_flag))
2118 50667 abs_remainder = abs_remainder_ts_decode(lc, rc, xc, yc);
2119
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 2316912 if (n <= last_scan_pos_pass2) {
2120 2233478 *abs_level = abs_level_pass2[n] + 2 * abs_remainder;
2121
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 83434 } else if (n <= last_scan_pos_pass1) {
2122 59178 *abs_level = *abs_level_pass1 + 2 * abs_remainder;
2123 } else {
2124 24256 *abs_level = abs_remainder;
2125
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 24256 if (abs_remainder) {
2126 //n > lastScanPosPass1
2127 11413 *coeff_sign_level = 1 - 2 * coeff_sign_flag_decode(lc);
2128 }
2129 }
2130
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 2316912 if (!bdpcm_flag && n <= last_scan_pos_pass1) {
2131
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 2292320 const int left = xc > 0 ? abs_level[-1] : 0;
2132
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 2292320 const int above = yc > 0 ? abs_level[-tb->tb_width] : 0;
2133 2292320 const int pred = FFMAX(left, above);
2134
2135
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 2292320 if (*abs_level == 1 && pred > 0)
2136 82826 *abs_level = pred;
2137
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 2209494 else if (*abs_level > 0 && *abs_level <= pred)
2138 37308 (*abs_level)--;
2139 }
2140
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 2316912 if (*abs_level) {
2141 241008 tb->coeffs[off] = *coeff_sign_level * *abs_level;
2142 241008 tb->max_scan_x = FFMAX(xc, tb->max_scan_x);
2143 241008 tb->max_scan_y = FFMAX(yc, tb->max_scan_y);
2144 241008 tb->min_scan_x = FFMIN(xc, tb->min_scan_x);
2145 241008 tb->min_scan_y = FFMIN(yc, tb->min_scan_y);
2146 } else {
2147 2075904 tb->coeffs[off] = 0;
2148 }
2149 }
2150
2151 144825 return 0;
2152 }
2153
2154 28597 static int hls_residual_ts_coding(VVCLocalContext *lc, TransformBlock *tb)
2155 {
2156 ResidualCoding rc;
2157 28597 tb->min_scan_x = tb->min_scan_y = INT_MAX;
2158 28597 init_residual_coding(lc, &rc, tb->log2_tb_width, tb->log2_tb_height, tb);
2159
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 173422 for (int i = 0; i <= rc.last_sub_block; i++) {
2160 144825 int ret = residual_ts_coding_subblock(lc, &rc, i);
2161
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 144825 if (ret < 0)
2162 ✗ return ret;
2163 }
2164
2165 28597 return 0;
2166 }
2167
2168 1821198 static inline int residual_coding_subblock(VVCLocalContext *lc, ResidualCoding *rc, const int i)
2169 {
2170 1821198 const H266RawSliceHeader *rsh = lc->sc->sh.r;
2171 1821198 TransformBlock *tb = rc->tb;
2172 int first_sig_scan_pos_sb, last_sig_scan_pos_sb;
2173 int first_pos_mode0, first_pos_mode1;
2174 1821198 int infer_sb_dc_sig_coeff_flag = 0;
2175 1821198 int n, sig_hidden_flag, sum = 0;
2176 int abs_level_gt2_flag[MAX_SUB_BLOCK_SIZE * MAX_SUB_BLOCK_SIZE];
2177 1821198 const int start_qstate_sb = rc->qstate;
2178 1821198 const int xs = rc->sb_scan_x_off[i];
2179 1821198 const int ys = rc->sb_scan_y_off[i];
2180 1821198 uint8_t *sb_coded_flag = rc->sb_coded_flag + ys * rc->width_in_sbs + xs;
2181
2182
2183
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 1821198 av_assert0(rc->num_sb_coeff <= MAX_SUB_BLOCK_SIZE * MAX_SUB_BLOCK_SIZE);
2184
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 1821198 if (i < rc->last_sub_block && i > 0) {
2185 738381 *sb_coded_flag = sb_coded_flag_decode(lc, sb_coded_flag, rc, xs, ys);
2186 738381 infer_sb_dc_sig_coeff_flag = 1;
2187 } else {
2188 1082817 *sb_coded_flag = 1;
2189 }
2190
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 1821198 if (*sb_coded_flag && (xs > 3 || ys > 3) && !tb->c_idx)
2191 50340 lc->parse.mts_zero_out_sig_coeff_flag = 0;
2192
2193
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 1821198 if (!*sb_coded_flag)
2194 229750 return 0;
2195
2196 1591448 first_sig_scan_pos_sb = rc->num_sb_coeff;
2197 1591448 last_sig_scan_pos_sb = -1;
2198
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 1591448 first_pos_mode0 = (i == rc->last_sub_block ? rc->last_scan_pos : rc->num_sb_coeff -1);
2199 1591448 first_pos_mode1 = first_pos_mode0;
2200
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 18490497 for (n = first_pos_mode0; n >= 0 && rc->rem_bins_pass1 >= 4; n--) {
2201 16899049 const int xc = (xs << rc->log2_sb_w) + rc->scan_x_off[n];
2202 16899049 const int yc = (ys << rc->log2_sb_h) + rc->scan_y_off[n];
2203
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 16899049 const int last = (xc == rc->last_significant_coeff_x && yc == rc->last_significant_coeff_y);
2204 16899049 int *abs_level_pass1 = rc->abs_level_pass1 + yc * tb->tb_width + xc;
2205 16899049 int *sig_coeff_flag = rc->sig_coeff_flag + yc * tb->tb_width + xc;
2206
2207
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 16899049 if ((n > 0 || !infer_sb_dc_sig_coeff_flag ) && !last) {
2208 16056760 *sig_coeff_flag = sig_coeff_flag_decode(lc, rc, xc, yc);
2209 16056760 rc->rem_bins_pass1--;
2210
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 16056760 if (*sig_coeff_flag)
2211 9066682 infer_sb_dc_sig_coeff_flag = 0;
2212 } else {
2213
5/8
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 842289 *sig_coeff_flag = last || (!rc->scan_x_off[n] && !rc ->scan_y_off[n] &&
2214 infer_sb_dc_sig_coeff_flag);
2215 }
2216 16899049 *abs_level_pass1 = 0;
2217
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 16899049 if (*sig_coeff_flag) {
2218 9908971 int abs_level_gt1_flag, par_level_flag = 0;
2219 9908971 const int inc = get_gtx_flag_inc(rc, xc, yc, last);
2220 9908971 abs_level_gt1_flag = abs_level_gtx_flag_decode(lc, inc);
2221 9908971 rc->rem_bins_pass1--;
2222
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 9908971 if (abs_level_gt1_flag) {
2223 1723093 par_level_flag = par_level_flag_decode(lc, inc);
2224 1723093 abs_level_gt2_flag[n] = abs_level_gtx_flag_decode(lc, inc + 32);
2225 1723093 rc->rem_bins_pass1 -= 2;
2226 } else {
2227 8185878 abs_level_gt2_flag[n] = 0;
2228 }
2229
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 9908971 if (last_sig_scan_pos_sb == -1)
2230 1582515 last_sig_scan_pos_sb = n;
2231 9908971 first_sig_scan_pos_sb = n;
2232
2233 9908971 *abs_level_pass1 =
2234 9908971 1 + par_level_flag + abs_level_gt1_flag + (abs_level_gt2_flag[n] << 1);
2235 } else {
2236 6990078 abs_level_gt2_flag[n] = 0;
2237 }
2238
2239
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 16899049 if (rsh->sh_dep_quant_used_flag)
2240 16592816 rc->qstate = qstate_translate_table[rc->qstate][*abs_level_pass1 & 1];
2241
2242 16899049 first_pos_mode1 = n - 1;
2243 }
2244
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 18490497 for (n = first_pos_mode0; n > first_pos_mode1; n--) {
2245 16899049 const int xc = (xs << rc->log2_sb_w) + rc->scan_x_off[n];
2246 16899049 const int yc = (ys << rc->log2_sb_h) + rc->scan_y_off[n];
2247 16899049 const int *abs_level_pass1 = rc->abs_level_pass1 + yc * tb->tb_width + xc;
2248 16899049 int *abs_level = rc->abs_level + yc * tb->tb_width + xc;
2249
2250 16899049 *abs_level = *abs_level_pass1;
2251
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 16899049 if (abs_level_gt2_flag[n]) {
2252 315475 const int abs_remainder = abs_remainder_decode(lc, rc, xc, yc);
2253 315475 ep_update_hist(lc->ep, rc, abs_remainder, 2);
2254 315475 *abs_level += 2 * abs_remainder;
2255 }
2256 }
2257
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 1846351 for (n = first_pos_mode1; n >= 0; n--) {
2258 254903 const int xc = (xs << rc->log2_sb_w) + rc->scan_x_off[n];
2259 254903 const int yc = (ys << rc->log2_sb_h) + rc->scan_y_off[n];
2260 254903 int *abs_level = rc->abs_level + yc * tb->tb_width + xc;
2261
2262
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✗ Branch 1 not taken.
 254903 if (*sb_coded_flag) {
2263 254903 const int dec_abs_level = dec_abs_level_decode(lc, rc, xc, yc, abs_level);
2264 254903 ep_update_hist(lc->ep, rc, dec_abs_level, 0);
2265 }
2266
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 254903 if (*abs_level > 0) {
2267
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 231651 if (last_sig_scan_pos_sb == -1)
2268 3100 last_sig_scan_pos_sb = n;
2269 231651 first_sig_scan_pos_sb = n;
2270 }
2271
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 254903 if (rsh->sh_dep_quant_used_flag)
2272 236183 rc->qstate = qstate_translate_table[rc->qstate][*abs_level & 1];
2273 }
2274
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 1626010 sig_hidden_flag = rsh->sh_sign_data_hiding_used_flag &&
2275
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✓ Branch 1 taken 12115 times.
 34562 (last_sig_scan_pos_sb - first_sig_scan_pos_sb > 3 ? 1 : 0);
2276
2277
2/2
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 1591448 if (rsh->sh_dep_quant_used_flag)
2278 1556210 rc->qstate = start_qstate_sb;
2279
2/2
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 1591448 n = (i == rc->last_sub_block ? rc->last_scan_pos : rc->num_sb_coeff -1);
2280
2/2
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 18745400 for (/* nothing */; n >= 0; n--) {
2281 int trans_coeff_level;
2282 17153952 const int xc = (xs << rc->log2_sb_w) + rc->scan_x_off[n];
2283 17153952 const int yc = (ys << rc->log2_sb_h) + rc->scan_y_off[n];
2284 17153952 const int off = yc * tb->tb_width + xc;
2285 17153952 const int *abs_level = rc->abs_level + off;
2286
2287
2/2
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 17153952 if (*abs_level > 0) {
2288 10140622 int sign = 1;
2289
4/4
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 10140622 if (!sig_hidden_flag || (n != first_sig_scan_pos_sb))
2290 10118175 sign = 1 - 2 * coeff_sign_flag_decode(lc);
2291
2/2
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✓ Branch 1 taken 199185 times.
 10140622 if (rsh->sh_dep_quant_used_flag) {
2292 9941437 trans_coeff_level = (2 * *abs_level - (rc->qstate > 1)) * sign;
2293 } else {
2294 199185 trans_coeff_level = *abs_level * sign;
2295
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 199185 if (sig_hidden_flag) {
2296 176798 sum += *abs_level;
2297
4/4
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✓ Branch 3 taken 10693 times.
 176798 if (n == first_sig_scan_pos_sb && (sum % 2))
2298 11754 trans_coeff_level = -trans_coeff_level;
2299 }
2300 }
2301 10140622 tb->coeffs[off] = trans_coeff_level;
2302 10140622 tb->max_scan_x = FFMAX(xc, tb->max_scan_x);
2303 10140622 tb->max_scan_y = FFMAX(yc, tb->max_scan_y);
2304 }
2305
2/2
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 17153952 if (rsh->sh_dep_quant_used_flag)
2306 16828999 rc->qstate = qstate_translate_table[rc->qstate][*abs_level & 1];
2307 }
2308
2309 1591448 return 0;
2310 }
2311
2312 834622 static void derive_last_scan_pos(ResidualCoding *rc)
2313 {
2314 int xc, yc, xs, ys;
2315 do {
2316
2/2
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 102037262 if (!rc->last_scan_pos) {
2317 5808227 rc->last_scan_pos = rc->num_sb_coeff;
2318 5808227 rc->last_sub_block--;
2319 }
2320 102037262 rc->last_scan_pos--;
2321 102037262 xs = rc->sb_scan_x_off[rc->last_sub_block];
2322 102037262 ys = rc->sb_scan_y_off[rc->last_sub_block];
2323 102037262 xc = (xs << rc->log2_sb_w) + rc->scan_x_off[rc->last_scan_pos];
2324 102037262 yc = (ys << rc->log2_sb_h) + rc->scan_y_off[rc->last_scan_pos];
2325
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 102037262 } while ((xc != rc->last_significant_coeff_x) || (yc != rc->last_significant_coeff_y));
2326 834622 }
2327
2328 834622 static void last_significant_coeff_x_y_decode(ResidualCoding *rc, VVCLocalContext *lc,
2329 const int log2_zo_tb_width, const int log2_zo_tb_height)
2330 {
2331 834622 const H266RawSliceHeader *rsh = lc->sc->sh.r;
2332 834622 const TransformBlock *tb = rc->tb;
2333 int last_significant_coeff_x, last_significant_coeff_y;
2334
2335 834622 last_significant_coeff_x = last_significant_coeff_x_prefix_decode(lc,
2336 834622 tb->log2_tb_width, log2_zo_tb_width, tb->c_idx);
2337
2338 834622 last_significant_coeff_y = last_significant_coeff_y_prefix_decode(lc,
2339 834622 tb->log2_tb_height, log2_zo_tb_height, tb->c_idx);
2340
2341
2/2
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 834622 if (last_significant_coeff_x > 3) {
2342 188582 int suffix = last_sig_coeff_suffix_decode(lc, last_significant_coeff_x);
2343 188582 last_significant_coeff_x = (1 << ((last_significant_coeff_x >> 1) - 1)) *
2344 188582 (2 + (last_significant_coeff_x & 1)) + suffix;
2345 }
2346
2/2
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 834622 if (last_significant_coeff_y > 3) {
2347 140020 int suffix = last_sig_coeff_suffix_decode(lc, last_significant_coeff_y);
2348 140020 last_significant_coeff_y = (1 << ((last_significant_coeff_y >> 1) - 1)) *
2349 140020 (2 + (last_significant_coeff_y & 1)) + suffix;
2350 }
2351
1/2
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 834622 if (rsh->sh_reverse_last_sig_coeff_flag) {
2352 ✗ last_significant_coeff_x = (1 << log2_zo_tb_width) - 1 - last_significant_coeff_x;
2353 ✗ last_significant_coeff_y = (1 << log2_zo_tb_height) - 1 - last_significant_coeff_y;
2354 }
2355 834622 rc->last_significant_coeff_x = last_significant_coeff_x;
2356 834622 rc->last_significant_coeff_y = last_significant_coeff_y;
2357 834622 }
2358
2359 834622 static int hls_residual_coding(VVCLocalContext *lc, TransformBlock *tb)
2360 {
2361 834622 const VVCSPS *sps = lc->fc->ps.sps;
2362 834622 const CodingUnit *cu = lc->cu;
2363 834622 const int log2_tb_width = tb->log2_tb_width;
2364 834622 const int log2_tb_height = tb->log2_tb_height;
2365 834622 const int c_idx = tb->c_idx;
2366 int log2_zo_tb_width, log2_zo_tb_height;
2367 ResidualCoding rc;
2368
2369
10/10
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 834622 if (sps->r->sps_mts_enabled_flag && cu->sbt_flag && !c_idx && log2_tb_width == 5 && log2_tb_height < 6)
2370 1397 log2_zo_tb_width = 4;
2371 else
2372 833225 log2_zo_tb_width = FFMIN(log2_tb_width, 5 );
2373
2374
10/10
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 834622 if (sps->r->sps_mts_enabled_flag && cu->sbt_flag && !c_idx && log2_tb_width < 6 && log2_tb_height == 5 )
2375 1939 log2_zo_tb_height = 4;
2376 else
2377 832683 log2_zo_tb_height = FFMIN(log2_tb_height, 5);
2378
2379 834622 init_residual_coding(lc, &rc, log2_zo_tb_width, log2_zo_tb_height, tb);
2380 834622 last_significant_coeff_x_y_decode(&rc, lc, log2_zo_tb_width, log2_zo_tb_height);
2381 834622 derive_last_scan_pos(&rc);
2382
2383
9/10
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 834622 if (!rc.last_sub_block && log2_tb_width >= 2 && log2_tb_height >= 2 && !tb->ts && rc.last_scan_pos > 0)
2384 391962 lc->parse.lfnst_dc_only = 0;
2385
6/6
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 834622 if ((rc.last_sub_block > 0 && log2_tb_width >= 2 && log2_tb_height >= 2 ) ||
2386
8/8
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 590272 (rc.last_scan_pos > 7 && (log2_tb_width == 2 || log2_tb_width == 3 ) &&
2387 log2_tb_width == log2_tb_height))
2388 292176 lc->parse.lfnst_zero_out_sig_coeff_flag = 0;
2389
6/6
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 834622 if ((rc.last_sub_block > 0 || rc.last_scan_pos > 0 ) && !c_idx)
2390 541139 lc->parse.mts_dc_only = 0;
2391
2392 834622 memset(tb->coeffs, 0, tb->tb_width * tb->tb_height * sizeof(*tb->coeffs));
2393 834622 memset(rc.abs_level, 0, tb->tb_width * tb->tb_height * sizeof(rc.abs_level[0]));
2394 834622 memset(rc.sb_coded_flag, 0, rc.nb_sbs);
2395 834622 memset(rc.abs_level_pass1, 0, tb->tb_width * tb->tb_height * sizeof(rc.abs_level_pass1[0]));
2396 834622 memset(rc.sig_coeff_flag, 0, tb->tb_width * tb->tb_height * sizeof(rc.sig_coeff_flag[0]));
2397
2398
2/2
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 2655820 for (int i = rc.last_sub_block; i >= 0; i--) {
2399 1821198 int ret = residual_coding_subblock(lc, &rc, i);
2400
1/2
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✓ Branch 1 taken 1821198 times.
 1821198 if (ret < 0)
2401 ✗ return ret;
2402 }
2403
2404 834622 return 0;
2405 }
2406
2407 863219 int ff_vvc_residual_coding(VVCLocalContext *lc, TransformBlock *tb)
2408 {
2409 863219 const H266RawSliceHeader *rsh = lc->sc->sh.r;
2410
3/4
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 863219 const int ts = !rsh->sh_ts_residual_coding_disabled_flag && tb->ts;
2411
2412
2/2
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✓ Branch 1 taken 834622 times.
 863219 return ts ? hls_residual_ts_coding(lc, tb) : hls_residual_coding(lc, tb);
2413 }
2414
2415 60920 int ff_vvc_cu_coded_flag(VVCLocalContext *lc)
2416 {
2417 60920 return GET_CABAC(CU_CODED_FLAG);
2418 }
2419
2420 116966 int ff_vvc_sbt_flag(VVCLocalContext *lc)
2421 {
2422 116966 const int w = lc->cu->cb_width;
2423 116966 const int h = lc->cu->cb_height;
2424 116966 const int inc = w * h <= 256;
2425 116966 return GET_CABAC(CU_SBT_FLAG + inc);
2426 }
2427
2428 27567 int ff_vvc_sbt_quad_flag(VVCLocalContext *lc)
2429 {
2430 27567 return GET_CABAC(CU_SBT_QUAD_FLAG);
2431 }
2432
2433 22208 int ff_vvc_sbt_horizontal_flag(VVCLocalContext *lc)
2434 {
2435 22208 const int w = lc->cu->cb_width;
2436 22208 const int h = lc->cu->cb_height;
2437
4/4
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 22208 const int inc = (w == h) ? 0 : ((w < h) ? 1 : 2);
2438 22208 return GET_CABAC(CU_SBT_HORIZONTAL_FLAG + inc);
2439 }
2440
2441 37306 int ff_vvc_sbt_pos_flag(VVCLocalContext *lc)
2442 {
2443 37306 return GET_CABAC(CU_SBT_POS_FLAG);
2444 }
2445
2446 164626 int ff_vvc_lfnst_idx(VVCLocalContext *lc, const int inc)
2447 {
2448
2/2
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✓ Branch 2 taken 122033 times.
 164626 if (!GET_CABAC(LFNST_IDX + inc))
2449 42593 return 0;
2450
2/2
✓ Branch 1 taken 76260 times.
✓ Branch 2 taken 45773 times.
 122033 if (!GET_CABAC(LFNST_IDX + 2))
2451 76260 return 1;
2452 45773 return 2;
2453 }
2454
2455 244197 int ff_vvc_mts_idx(VVCLocalContext *lc)
2456 {
2457 int i;
2458
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 443876 for (i = 0; i < 4; i++) {
2459
2/2
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✓ Branch 2 taken 199679 times.
 443876 if (!GET_CABAC(MTS_IDX + i))
2460 244197 return i;
2461 }
2462 ✗ return i;
2463 }
2464
2465 1659 int ff_vvc_end_of_slice_flag_decode(VVCLocalContext *lc)
2466 {
2467 1659 return get_cabac_terminate(&lc->ep->cc);
2468 }
2469
2470 214 int ff_vvc_end_of_tile_one_bit(VVCLocalContext *lc)
2471 {
2472 214 return get_cabac_terminate(&lc->ep->cc);
2473 }
2474
2475 153 int ff_vvc_end_of_subset_one_bit(VVCLocalContext *lc)
2476 {
2477 153 return get_cabac_terminate(&lc->ep->cc);
2478 }
2479