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Bug 1878930 - s/RawBuffer/Span/: Remove RawBuffer and unused utils. r=gfx-reviewers...
[gecko.git] / media / ffvpx / libavcodec / cbs_av1_syntax_template.c
blob3be1f2d30f96921e5c595dc40d59518deb892160
1 /*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 static int FUNC(obu_header)(CodedBitstreamContext *ctx, RWContext *rw,
20 AV1RawOBUHeader *current)
21 {
22 CodedBitstreamAV1Context *priv = ctx->priv_data;
23 int err;
24
25 HEADER("OBU header");
26
27 fc(1, obu_forbidden_bit, 0, 0);
28
29 fc(4, obu_type, 0, AV1_OBU_PADDING);
30 flag(obu_extension_flag);
31 flag(obu_has_size_field);
32
33 fc(1, obu_reserved_1bit, 0, 0);
34
35 if (current->obu_extension_flag) {
36 fb(3, temporal_id);
37 fb(2, spatial_id);
38 fc(3, extension_header_reserved_3bits, 0, 0);
39 } else {
40 infer(temporal_id, 0);
41 infer(spatial_id, 0);
42 }
43
44 priv->temporal_id = current->temporal_id;
45 priv->spatial_id = current->spatial_id;
46
47 return 0;
48 }
49
50 static int FUNC(trailing_bits)(CodedBitstreamContext *ctx, RWContext *rw, int nb_bits)
51 {
52 int err;
53
54 av_assert0(nb_bits > 0);
55
56 fixed(1, trailing_one_bit, 1);
57 --nb_bits;
58
59 while (nb_bits > 0) {
60 fixed(1, trailing_zero_bit, 0);
61 --nb_bits;
62 }
63
64 return 0;
65 }
66
67 static int FUNC(byte_alignment)(CodedBitstreamContext *ctx, RWContext *rw)
68 {
69 int err;
70
71 while (byte_alignment(rw) != 0)
72 fixed(1, zero_bit, 0);
73
74 return 0;
75 }
76
77 static int FUNC(color_config)(CodedBitstreamContext *ctx, RWContext *rw,
78 AV1RawColorConfig *current, int seq_profile)
79 {
80 CodedBitstreamAV1Context *priv = ctx->priv_data;
81 int err;
82
83 flag(high_bitdepth);
84
85 if (seq_profile == AV_PROFILE_AV1_PROFESSIONAL &&
86 current->high_bitdepth) {
87 flag(twelve_bit);
88 priv->bit_depth = current->twelve_bit ? 12 : 10;
89 } else {
90 priv->bit_depth = current->high_bitdepth ? 10 : 8;
91 }
92
93 if (seq_profile == AV_PROFILE_AV1_HIGH)
94 infer(mono_chrome, 0);
95 else
96 flag(mono_chrome);
97 priv->num_planes = current->mono_chrome ? 1 : 3;
98
99 flag(color_description_present_flag);
100 if (current->color_description_present_flag) {
101 fb(8, color_primaries);
102 fb(8, transfer_characteristics);
103 fb(8, matrix_coefficients);
104 } else {
105 infer(color_primaries, AVCOL_PRI_UNSPECIFIED);
106 infer(transfer_characteristics, AVCOL_TRC_UNSPECIFIED);
107 infer(matrix_coefficients, AVCOL_SPC_UNSPECIFIED);
108 }
109
110 if (current->mono_chrome) {
111 flag(color_range);
112
113 infer(subsampling_x, 1);
114 infer(subsampling_y, 1);
115 infer(chroma_sample_position, AV1_CSP_UNKNOWN);
116 infer(separate_uv_delta_q, 0);
117
118 } else if (current->color_primaries == AVCOL_PRI_BT709 &&
119 current->transfer_characteristics == AVCOL_TRC_IEC61966_2_1 &&
120 current->matrix_coefficients == AVCOL_SPC_RGB) {
121 infer(color_range, 1);
122 infer(subsampling_x, 0);
123 infer(subsampling_y, 0);
124 flag(separate_uv_delta_q);
125
126 } else {
127 flag(color_range);
128
129 if (seq_profile == AV_PROFILE_AV1_MAIN) {
130 infer(subsampling_x, 1);
131 infer(subsampling_y, 1);
132 } else if (seq_profile == AV_PROFILE_AV1_HIGH) {
133 infer(subsampling_x, 0);
134 infer(subsampling_y, 0);
135 } else {
136 if (priv->bit_depth == 12) {
137 fb(1, subsampling_x);
138 if (current->subsampling_x)
139 fb(1, subsampling_y);
140 else
141 infer(subsampling_y, 0);
142 } else {
143 infer(subsampling_x, 1);
144 infer(subsampling_y, 0);
145 }
146 }
147 if (current->subsampling_x && current->subsampling_y) {
148 fc(2, chroma_sample_position, AV1_CSP_UNKNOWN,
149 AV1_CSP_COLOCATED);
150 }
151
152 flag(separate_uv_delta_q);
153 }
154
155 return 0;
156 }
157
158 static int FUNC(timing_info)(CodedBitstreamContext *ctx, RWContext *rw,
159 AV1RawTimingInfo *current)
160 {
161 int err;
162
163 fc(32, num_units_in_display_tick, 1, MAX_UINT_BITS(32));
164 fc(32, time_scale, 1, MAX_UINT_BITS(32));
165
166 flag(equal_picture_interval);
167 if (current->equal_picture_interval)
168 uvlc(num_ticks_per_picture_minus_1, 0, MAX_UINT_BITS(32) - 1);
169
170 return 0;
171 }
172
173 static int FUNC(decoder_model_info)(CodedBitstreamContext *ctx, RWContext *rw,
174 AV1RawDecoderModelInfo *current)
175 {
176 int err;
177
178 fb(5, buffer_delay_length_minus_1);
179 fc(32, num_units_in_decoding_tick, 1, MAX_UINT_BITS(32));
180 fb(5, buffer_removal_time_length_minus_1);
181 fb(5, frame_presentation_time_length_minus_1);
182
183 return 0;
184 }
185
186 static int FUNC(sequence_header_obu)(CodedBitstreamContext *ctx, RWContext *rw,
187 AV1RawSequenceHeader *current)
188 {
189 int i, err;
190
191 HEADER("Sequence Header");
192
193 fc(3, seq_profile, AV_PROFILE_AV1_MAIN,
194 AV_PROFILE_AV1_PROFESSIONAL);
195 flag(still_picture);
196 flag(reduced_still_picture_header);
197
198 if (current->reduced_still_picture_header) {
199 infer(timing_info_present_flag, 0);
200 infer(decoder_model_info_present_flag, 0);
201 infer(initial_display_delay_present_flag, 0);
202 infer(operating_points_cnt_minus_1, 0);
203 infer(operating_point_idc[0], 0);
204
205 fb(5, seq_level_idx[0]);
206
207 infer(seq_tier[0], 0);
208 infer(decoder_model_present_for_this_op[0], 0);
209 infer(initial_display_delay_present_for_this_op[0], 0);
210
211 } else {
212 flag(timing_info_present_flag);
213 if (current->timing_info_present_flag) {
214 CHECK(FUNC(timing_info)(ctx, rw, &current->timing_info));
215
216 flag(decoder_model_info_present_flag);
217 if (current->decoder_model_info_present_flag) {
218 CHECK(FUNC(decoder_model_info)
219 (ctx, rw, &current->decoder_model_info));
220 }
221 } else {
222 infer(decoder_model_info_present_flag, 0);
223 }
224
225 flag(initial_display_delay_present_flag);
226
227 fb(5, operating_points_cnt_minus_1);
228 for (i = 0; i <= current->operating_points_cnt_minus_1; i++) {
229 fbs(12, operating_point_idc[i], 1, i);
230 fbs(5, seq_level_idx[i], 1, i);
231
232 if (current->seq_level_idx[i] > 7)
233 flags(seq_tier[i], 1, i);
234 else
235 infer(seq_tier[i], 0);
236
237 if (current->decoder_model_info_present_flag) {
238 flags(decoder_model_present_for_this_op[i], 1, i);
239 if (current->decoder_model_present_for_this_op[i]) {
240 int n = current->decoder_model_info.buffer_delay_length_minus_1 + 1;
241 fbs(n, decoder_buffer_delay[i], 1, i);
242 fbs(n, encoder_buffer_delay[i], 1, i);
243 flags(low_delay_mode_flag[i], 1, i);
244 }
245 } else {
246 infer(decoder_model_present_for_this_op[i], 0);
247 }
248
249 if (current->initial_display_delay_present_flag) {
250 flags(initial_display_delay_present_for_this_op[i], 1, i);
251 if (current->initial_display_delay_present_for_this_op[i])
252 fbs(4, initial_display_delay_minus_1[i], 1, i);
253 }
254 }
255 }
256
257 fb(4, frame_width_bits_minus_1);
258 fb(4, frame_height_bits_minus_1);
259
260 fb(current->frame_width_bits_minus_1 + 1, max_frame_width_minus_1);
261 fb(current->frame_height_bits_minus_1 + 1, max_frame_height_minus_1);
262
263 if (current->reduced_still_picture_header)
264 infer(frame_id_numbers_present_flag, 0);
265 else
266 flag(frame_id_numbers_present_flag);
267 if (current->frame_id_numbers_present_flag) {
268 fb(4, delta_frame_id_length_minus_2);
269 fb(3, additional_frame_id_length_minus_1);
270 }
271
272 flag(use_128x128_superblock);
273 flag(enable_filter_intra);
274 flag(enable_intra_edge_filter);
275
276 if (current->reduced_still_picture_header) {
277 infer(enable_interintra_compound, 0);
278 infer(enable_masked_compound, 0);
279 infer(enable_warped_motion, 0);
280 infer(enable_dual_filter, 0);
281 infer(enable_order_hint, 0);
282 infer(enable_jnt_comp, 0);
283 infer(enable_ref_frame_mvs, 0);
284
285 infer(seq_force_screen_content_tools,
286 AV1_SELECT_SCREEN_CONTENT_TOOLS);
287 infer(seq_force_integer_mv,
288 AV1_SELECT_INTEGER_MV);
289 } else {
290 flag(enable_interintra_compound);
291 flag(enable_masked_compound);
292 flag(enable_warped_motion);
293 flag(enable_dual_filter);
294
295 flag(enable_order_hint);
296 if (current->enable_order_hint) {
297 flag(enable_jnt_comp);
298 flag(enable_ref_frame_mvs);
299 } else {
300 infer(enable_jnt_comp, 0);
301 infer(enable_ref_frame_mvs, 0);
302 }
303
304 flag(seq_choose_screen_content_tools);
305 if (current->seq_choose_screen_content_tools)
306 infer(seq_force_screen_content_tools,
307 AV1_SELECT_SCREEN_CONTENT_TOOLS);
308 else
309 fb(1, seq_force_screen_content_tools);
310 if (current->seq_force_screen_content_tools > 0) {
311 flag(seq_choose_integer_mv);
312 if (current->seq_choose_integer_mv)
313 infer(seq_force_integer_mv,
314 AV1_SELECT_INTEGER_MV);
315 else
316 fb(1, seq_force_integer_mv);
317 } else {
318 infer(seq_force_integer_mv, AV1_SELECT_INTEGER_MV);
319 }
320
321 if (current->enable_order_hint)
322 fb(3, order_hint_bits_minus_1);
323 }
324
325 flag(enable_superres);
326 flag(enable_cdef);
327 flag(enable_restoration);
328
329 CHECK(FUNC(color_config)(ctx, rw, &current->color_config,
330 current->seq_profile));
331
332 flag(film_grain_params_present);
333
334 return 0;
335 }
336
337 static int FUNC(temporal_delimiter_obu)(CodedBitstreamContext *ctx, RWContext *rw)
338 {
339 CodedBitstreamAV1Context *priv = ctx->priv_data;
340
341 HEADER("Temporal Delimiter");
342
343 priv->seen_frame_header = 0;
344
345 return 0;
346 }
347
348 static int FUNC(set_frame_refs)(CodedBitstreamContext *ctx, RWContext *rw,
349 AV1RawFrameHeader *current)
350 {
351 CodedBitstreamAV1Context *priv = ctx->priv_data;
352 const AV1RawSequenceHeader *seq = priv->sequence_header;
353 static const uint8_t ref_frame_list[AV1_NUM_REF_FRAMES - 2] = {
354 AV1_REF_FRAME_LAST2, AV1_REF_FRAME_LAST3, AV1_REF_FRAME_BWDREF,
355 AV1_REF_FRAME_ALTREF2, AV1_REF_FRAME_ALTREF
356 };
357 int8_t ref_frame_idx[AV1_REFS_PER_FRAME], used_frame[AV1_NUM_REF_FRAMES];
358 int16_t shifted_order_hints[AV1_NUM_REF_FRAMES];
359 int cur_frame_hint, latest_order_hint, earliest_order_hint, ref;
360 int i, j;
361
362 for (i = 0; i < AV1_REFS_PER_FRAME; i++)
363 ref_frame_idx[i] = -1;
364 ref_frame_idx[AV1_REF_FRAME_LAST - AV1_REF_FRAME_LAST] = current->last_frame_idx;
365 ref_frame_idx[AV1_REF_FRAME_GOLDEN - AV1_REF_FRAME_LAST] = current->golden_frame_idx;
366
367 for (i = 0; i < AV1_NUM_REF_FRAMES; i++)
368 used_frame[i] = 0;
369 used_frame[current->last_frame_idx] = 1;
370 used_frame[current->golden_frame_idx] = 1;
371
372 cur_frame_hint = 1 << (seq->order_hint_bits_minus_1);
373 for (i = 0; i < AV1_NUM_REF_FRAMES; i++)
374 shifted_order_hints[i] = cur_frame_hint +
375 cbs_av1_get_relative_dist(seq, priv->ref[i].order_hint,
376 priv->order_hint);
377
378 latest_order_hint = shifted_order_hints[current->last_frame_idx];
379 earliest_order_hint = shifted_order_hints[current->golden_frame_idx];
380
381 ref = -1;
382 for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
383 int hint = shifted_order_hints[i];
384 if (!used_frame[i] && hint >= cur_frame_hint &&
385 (ref < 0 || hint >= latest_order_hint)) {
386 ref = i;
387 latest_order_hint = hint;
388 }
389 }
390 if (ref >= 0) {
391 ref_frame_idx[AV1_REF_FRAME_ALTREF - AV1_REF_FRAME_LAST] = ref;
392 used_frame[ref] = 1;
393 }
394
395 ref = -1;
396 for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
397 int hint = shifted_order_hints[i];
398 if (!used_frame[i] && hint >= cur_frame_hint &&
399 (ref < 0 || hint < earliest_order_hint)) {
400 ref = i;
401 earliest_order_hint = hint;
402 }
403 }
404 if (ref >= 0) {
405 ref_frame_idx[AV1_REF_FRAME_BWDREF - AV1_REF_FRAME_LAST] = ref;
406 used_frame[ref] = 1;
407 }
408
409 ref = -1;
410 for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
411 int hint = shifted_order_hints[i];
412 if (!used_frame[i] && hint >= cur_frame_hint &&
413 (ref < 0 || hint < earliest_order_hint)) {
414 ref = i;
415 earliest_order_hint = hint;
416 }
417 }
418 if (ref >= 0) {
419 ref_frame_idx[AV1_REF_FRAME_ALTREF2 - AV1_REF_FRAME_LAST] = ref;
420 used_frame[ref] = 1;
421 }
422
423 for (i = 0; i < AV1_REFS_PER_FRAME - 2; i++) {
424 int ref_frame = ref_frame_list[i];
425 if (ref_frame_idx[ref_frame - AV1_REF_FRAME_LAST] < 0 ) {
426 ref = -1;
427 for (j = 0; j < AV1_NUM_REF_FRAMES; j++) {
428 int hint = shifted_order_hints[j];
429 if (!used_frame[j] && hint < cur_frame_hint &&
430 (ref < 0 || hint >= latest_order_hint)) {
431 ref = j;
432 latest_order_hint = hint;
433 }
434 }
435 if (ref >= 0) {
436 ref_frame_idx[ref_frame - AV1_REF_FRAME_LAST] = ref;
437 used_frame[ref] = 1;
438 }
439 }
440 }
441
442 ref = -1;
443 for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
444 int hint = shifted_order_hints[i];
445 if (ref < 0 || hint < earliest_order_hint) {
446 ref = i;
447 earliest_order_hint = hint;
448 }
449 }
450 for (i = 0; i < AV1_REFS_PER_FRAME; i++) {
451 if (ref_frame_idx[i] < 0)
452 ref_frame_idx[i] = ref;
453 infer(ref_frame_idx[i], ref_frame_idx[i]);
454 }
455
456 return 0;
457 }
458
459 static int FUNC(superres_params)(CodedBitstreamContext *ctx, RWContext *rw,
460 AV1RawFrameHeader *current)
461 {
462 CodedBitstreamAV1Context *priv = ctx->priv_data;
463 const AV1RawSequenceHeader *seq = priv->sequence_header;
464 int denom, err;
465
466 if (seq->enable_superres)
467 flag(use_superres);
468 else
469 infer(use_superres, 0);
470
471 if (current->use_superres) {
472 fb(3, coded_denom);
473 denom = current->coded_denom + AV1_SUPERRES_DENOM_MIN;
474 } else {
475 denom = AV1_SUPERRES_NUM;
476 }
477
478 priv->upscaled_width = priv->frame_width;
479 priv->frame_width = (priv->upscaled_width * AV1_SUPERRES_NUM +
480 denom / 2) / denom;
481
482 return 0;
483 }
484
485 static int FUNC(frame_size)(CodedBitstreamContext *ctx, RWContext *rw,
486 AV1RawFrameHeader *current)
487 {
488 CodedBitstreamAV1Context *priv = ctx->priv_data;
489 const AV1RawSequenceHeader *seq = priv->sequence_header;
490 int err;
491
492 if (current->frame_size_override_flag) {
493 fb(seq->frame_width_bits_minus_1 + 1, frame_width_minus_1);
494 fb(seq->frame_height_bits_minus_1 + 1, frame_height_minus_1);
495 } else {
496 infer(frame_width_minus_1, seq->max_frame_width_minus_1);
497 infer(frame_height_minus_1, seq->max_frame_height_minus_1);
498 }
499
500 priv->frame_width = current->frame_width_minus_1 + 1;
501 priv->frame_height = current->frame_height_minus_1 + 1;
502
503 CHECK(FUNC(superres_params)(ctx, rw, current));
504
505 return 0;
506 }
507
508 static int FUNC(render_size)(CodedBitstreamContext *ctx, RWContext *rw,
509 AV1RawFrameHeader *current)
510 {
511 CodedBitstreamAV1Context *priv = ctx->priv_data;
512 int err;
513
514 flag(render_and_frame_size_different);
515
516 if (current->render_and_frame_size_different) {
517 fb(16, render_width_minus_1);
518 fb(16, render_height_minus_1);
519 } else {
520 infer(render_width_minus_1, current->frame_width_minus_1);
521 infer(render_height_minus_1, current->frame_height_minus_1);
522 }
523
524 priv->render_width = current->render_width_minus_1 + 1;
525 priv->render_height = current->render_height_minus_1 + 1;
526
527 return 0;
528 }
529
530 static int FUNC(frame_size_with_refs)(CodedBitstreamContext *ctx, RWContext *rw,
531 AV1RawFrameHeader *current)
532 {
533 CodedBitstreamAV1Context *priv = ctx->priv_data;
534 int i, err;
535
536 for (i = 0; i < AV1_REFS_PER_FRAME; i++) {
537 flags(found_ref[i], 1, i);
538 if (current->found_ref[i]) {
539 AV1ReferenceFrameState *ref =
540 &priv->ref[current->ref_frame_idx[i]];
541
542 if (!ref->valid) {
543 av_log(ctx->log_ctx, AV_LOG_ERROR,
544 "Missing reference frame needed for frame size "
545 "(ref = %d, ref_frame_idx = %d).\n",
546 i, current->ref_frame_idx[i]);
547 return AVERROR_INVALIDDATA;
548 }
549
550 infer(frame_width_minus_1, ref->upscaled_width - 1);
551 infer(frame_height_minus_1, ref->frame_height - 1);
552 infer(render_width_minus_1, ref->render_width - 1);
553 infer(render_height_minus_1, ref->render_height - 1);
554
555 priv->upscaled_width = ref->upscaled_width;
556 priv->frame_width = priv->upscaled_width;
557 priv->frame_height = ref->frame_height;
558 priv->render_width = ref->render_width;
559 priv->render_height = ref->render_height;
560 break;
561 }
562 }
563
564 if (i >= AV1_REFS_PER_FRAME) {
565 CHECK(FUNC(frame_size)(ctx, rw, current));
566 CHECK(FUNC(render_size)(ctx, rw, current));
567 } else {
568 CHECK(FUNC(superres_params)(ctx, rw, current));
569 }
570
571 return 0;
572 }
573
574 static int FUNC(interpolation_filter)(CodedBitstreamContext *ctx, RWContext *rw,
575 AV1RawFrameHeader *current)
576 {
577 int err;
578
579 flag(is_filter_switchable);
580 if (current->is_filter_switchable)
581 infer(interpolation_filter,
582 AV1_INTERPOLATION_FILTER_SWITCHABLE);
583 else
584 fb(2, interpolation_filter);
585
586 return 0;
587 }
588
589 static int FUNC(tile_info)(CodedBitstreamContext *ctx, RWContext *rw,
590 AV1RawFrameHeader *current)
591 {
592 CodedBitstreamAV1Context *priv = ctx->priv_data;
593 const AV1RawSequenceHeader *seq = priv->sequence_header;
594 int mi_cols, mi_rows, sb_cols, sb_rows, sb_shift, sb_size;
595 int max_tile_width_sb, max_tile_height_sb, max_tile_area_sb;
596 int min_log2_tile_cols, max_log2_tile_cols, max_log2_tile_rows;
597 int min_log2_tiles, min_log2_tile_rows;
598 int i, err;
599
600 mi_cols = 2 * ((priv->frame_width + 7) >> 3);
601 mi_rows = 2 * ((priv->frame_height + 7) >> 3);
602
603 sb_cols = seq->use_128x128_superblock ? ((mi_cols + 31) >> 5)
604 : ((mi_cols + 15) >> 4);
605 sb_rows = seq->use_128x128_superblock ? ((mi_rows + 31) >> 5)
606 : ((mi_rows + 15) >> 4);
607
608 sb_shift = seq->use_128x128_superblock ? 5 : 4;
609 sb_size = sb_shift + 2;
610
611 max_tile_width_sb = AV1_MAX_TILE_WIDTH >> sb_size;
612 max_tile_area_sb = AV1_MAX_TILE_AREA >> (2 * sb_size);
613
614 min_log2_tile_cols = cbs_av1_tile_log2(max_tile_width_sb, sb_cols);
615 max_log2_tile_cols = cbs_av1_tile_log2(1, FFMIN(sb_cols, AV1_MAX_TILE_COLS));
616 max_log2_tile_rows = cbs_av1_tile_log2(1, FFMIN(sb_rows, AV1_MAX_TILE_ROWS));
617 min_log2_tiles = FFMAX(min_log2_tile_cols,
618 cbs_av1_tile_log2(max_tile_area_sb, sb_rows * sb_cols));
619
620 flag(uniform_tile_spacing_flag);
621
622 if (current->uniform_tile_spacing_flag) {
623 int tile_width_sb, tile_height_sb;
624
625 increment(tile_cols_log2, min_log2_tile_cols, max_log2_tile_cols);
626
627 tile_width_sb = (sb_cols + (1 << current->tile_cols_log2) - 1) >>
628 current->tile_cols_log2;
629
630 for (int off = 0, i = 0; off < sb_cols; off += tile_width_sb)
631 current->tile_start_col_sb[i++] = off;
632
633 current->tile_cols = (sb_cols + tile_width_sb - 1) / tile_width_sb;
634
635 min_log2_tile_rows = FFMAX(min_log2_tiles - current->tile_cols_log2, 0);
636
637 increment(tile_rows_log2, min_log2_tile_rows, max_log2_tile_rows);
638
639 tile_height_sb = (sb_rows + (1 << current->tile_rows_log2) - 1) >>
640 current->tile_rows_log2;
641
642 for (int off = 0, i = 0; off < sb_rows; off += tile_height_sb)
643 current->tile_start_row_sb[i++] = off;
644
645 current->tile_rows = (sb_rows + tile_height_sb - 1) / tile_height_sb;
646
647 for (i = 0; i < current->tile_cols - 1; i++)
648 infer(width_in_sbs_minus_1[i], tile_width_sb - 1);
649 infer(width_in_sbs_minus_1[i],
650 sb_cols - (current->tile_cols - 1) * tile_width_sb - 1);
651 for (i = 0; i < current->tile_rows - 1; i++)
652 infer(height_in_sbs_minus_1[i], tile_height_sb - 1);
653 infer(height_in_sbs_minus_1[i],
654 sb_rows - (current->tile_rows - 1) * tile_height_sb - 1);
655
656 } else {
657 int widest_tile_sb, start_sb, size_sb, max_width, max_height;
658
659 widest_tile_sb = 0;
660
661 start_sb = 0;
662 for (i = 0; start_sb < sb_cols && i < AV1_MAX_TILE_COLS; i++) {
663 current->tile_start_col_sb[i] = start_sb;
664 max_width = FFMIN(sb_cols - start_sb, max_tile_width_sb);
665 ns(max_width, width_in_sbs_minus_1[i], 1, i);
666 size_sb = current->width_in_sbs_minus_1[i] + 1;
667 widest_tile_sb = FFMAX(size_sb, widest_tile_sb);
668 start_sb += size_sb;
669 }
670 current->tile_cols_log2 = cbs_av1_tile_log2(1, i);
671 current->tile_cols = i;
672
673 if (min_log2_tiles > 0)
674 max_tile_area_sb = (sb_rows * sb_cols) >> (min_log2_tiles + 1);
675 else
676 max_tile_area_sb = sb_rows * sb_cols;
677 max_tile_height_sb = FFMAX(max_tile_area_sb / widest_tile_sb, 1);
678
679 start_sb = 0;
680 for (i = 0; start_sb < sb_rows && i < AV1_MAX_TILE_ROWS; i++) {
681 current->tile_start_row_sb[i] = start_sb;
682 max_height = FFMIN(sb_rows - start_sb, max_tile_height_sb);
683 ns(max_height, height_in_sbs_minus_1[i], 1, i);
684 size_sb = current->height_in_sbs_minus_1[i] + 1;
685 start_sb += size_sb;
686 }
687 current->tile_rows_log2 = cbs_av1_tile_log2(1, i);
688 current->tile_rows = i;
689 }
690
691 if (current->tile_cols_log2 > 0 ||
692 current->tile_rows_log2 > 0) {
693 fb(current->tile_cols_log2 + current->tile_rows_log2,
694 context_update_tile_id);
695 fb(2, tile_size_bytes_minus1);
696 } else {
697 infer(context_update_tile_id, 0);
698 }
699
700 priv->tile_cols = current->tile_cols;
701 priv->tile_rows = current->tile_rows;
702
703 return 0;
704 }
705
706 static int FUNC(quantization_params)(CodedBitstreamContext *ctx, RWContext *rw,
707 AV1RawFrameHeader *current)
708 {
709 CodedBitstreamAV1Context *priv = ctx->priv_data;
710 const AV1RawSequenceHeader *seq = priv->sequence_header;
711 int err;
712
713 fb(8, base_q_idx);
714
715 delta_q(delta_q_y_dc);
716
717 if (priv->num_planes > 1) {
718 if (seq->color_config.separate_uv_delta_q)
719 flag(diff_uv_delta);
720 else
721 infer(diff_uv_delta, 0);
722
723 delta_q(delta_q_u_dc);
724 delta_q(delta_q_u_ac);
725
726 if (current->diff_uv_delta) {
727 delta_q(delta_q_v_dc);
728 delta_q(delta_q_v_ac);
729 } else {
730 infer(delta_q_v_dc, current->delta_q_u_dc);
731 infer(delta_q_v_ac, current->delta_q_u_ac);
732 }
733 } else {
734 infer(delta_q_u_dc, 0);
735 infer(delta_q_u_ac, 0);
736 infer(delta_q_v_dc, 0);
737 infer(delta_q_v_ac, 0);
738 }
739
740 flag(using_qmatrix);
741 if (current->using_qmatrix) {
742 fb(4, qm_y);
743 fb(4, qm_u);
744 if (seq->color_config.separate_uv_delta_q)
745 fb(4, qm_v);
746 else
747 infer(qm_v, current->qm_u);
748 }
749
750 return 0;
751 }
752
753 static int FUNC(segmentation_params)(CodedBitstreamContext *ctx, RWContext *rw,
754 AV1RawFrameHeader *current)
755 {
756 CodedBitstreamAV1Context *priv = ctx->priv_data;
757 static const uint8_t bits[AV1_SEG_LVL_MAX] = { 8, 6, 6, 6, 6, 3, 0, 0 };
758 static const uint8_t sign[AV1_SEG_LVL_MAX] = { 1, 1, 1, 1, 1, 0, 0, 0 };
759 static const uint8_t default_feature_enabled[AV1_SEG_LVL_MAX] = { 0 };
760 static const int16_t default_feature_value[AV1_SEG_LVL_MAX] = { 0 };
761 int i, j, err;
762
763 flag(segmentation_enabled);
764
765 if (current->segmentation_enabled) {
766 if (current->primary_ref_frame == AV1_PRIMARY_REF_NONE) {
767 infer(segmentation_update_map, 1);
768 infer(segmentation_temporal_update, 0);
769 infer(segmentation_update_data, 1);
770 } else {
771 flag(segmentation_update_map);
772 if (current->segmentation_update_map)
773 flag(segmentation_temporal_update);
774 else
775 infer(segmentation_temporal_update, 0);
776 flag(segmentation_update_data);
777 }
778
779 for (i = 0; i < AV1_MAX_SEGMENTS; i++) {
780 const uint8_t *ref_feature_enabled;
781 const int16_t *ref_feature_value;
782
783 if (current->primary_ref_frame == AV1_PRIMARY_REF_NONE) {
784 ref_feature_enabled = default_feature_enabled;
785 ref_feature_value = default_feature_value;
786 } else {
787 ref_feature_enabled =
788 priv->ref[current->ref_frame_idx[current->primary_ref_frame]].feature_enabled[i];
789 ref_feature_value =
790 priv->ref[current->ref_frame_idx[current->primary_ref_frame]].feature_value[i];
791 }
792
793 for (j = 0; j < AV1_SEG_LVL_MAX; j++) {
794 if (current->segmentation_update_data) {
795 flags(feature_enabled[i][j], 2, i, j);
796
797 if (current->feature_enabled[i][j] && bits[j] > 0) {
798 if (sign[j])
799 sus(1 + bits[j], feature_value[i][j], 2, i, j);
800 else
801 fbs(bits[j], feature_value[i][j], 2, i, j);
802 } else {
803 infer(feature_value[i][j], 0);
804 }
805 } else {
806 infer(feature_enabled[i][j], ref_feature_enabled[j]);
807 infer(feature_value[i][j], ref_feature_value[j]);
808 }
809 }
810 }
811 } else {
812 for (i = 0; i < AV1_MAX_SEGMENTS; i++) {
813 for (j = 0; j < AV1_SEG_LVL_MAX; j++) {
814 infer(feature_enabled[i][j], 0);
815 infer(feature_value[i][j], 0);
816 }
817 }
818 }
819
820 return 0;
821 }
822
823 static int FUNC(delta_q_params)(CodedBitstreamContext *ctx, RWContext *rw,
824 AV1RawFrameHeader *current)
825 {
826 int err;
827
828 if (current->base_q_idx > 0)
829 flag(delta_q_present);
830 else
831 infer(delta_q_present, 0);
832
833 if (current->delta_q_present)
834 fb(2, delta_q_res);
835
836 return 0;
837 }
838
839 static int FUNC(delta_lf_params)(CodedBitstreamContext *ctx, RWContext *rw,
840 AV1RawFrameHeader *current)
841 {
842 int err;
843
844 if (current->delta_q_present) {
845 if (!current->allow_intrabc)
846 flag(delta_lf_present);
847 else
848 infer(delta_lf_present, 0);
849 if (current->delta_lf_present) {
850 fb(2, delta_lf_res);
851 flag(delta_lf_multi);
852 } else {
853 infer(delta_lf_res, 0);
854 infer(delta_lf_multi, 0);
855 }
856 } else {
857 infer(delta_lf_present, 0);
858 infer(delta_lf_res, 0);
859 infer(delta_lf_multi, 0);
860 }
861
862 return 0;
863 }
864
865 static int FUNC(loop_filter_params)(CodedBitstreamContext *ctx, RWContext *rw,
866 AV1RawFrameHeader *current)
867 {
868 CodedBitstreamAV1Context *priv = ctx->priv_data;
869 static const int8_t default_loop_filter_ref_deltas[AV1_TOTAL_REFS_PER_FRAME] =
870 { 1, 0, 0, 0, -1, 0, -1, -1 };
871 static const int8_t default_loop_filter_mode_deltas[2] = { 0, 0 };
872 int i, err;
873
874 if (priv->coded_lossless || current->allow_intrabc) {
875 infer(loop_filter_level[0], 0);
876 infer(loop_filter_level[1], 0);
877 infer(loop_filter_ref_deltas[AV1_REF_FRAME_INTRA], 1);
878 infer(loop_filter_ref_deltas[AV1_REF_FRAME_LAST], 0);
879 infer(loop_filter_ref_deltas[AV1_REF_FRAME_LAST2], 0);
880 infer(loop_filter_ref_deltas[AV1_REF_FRAME_LAST3], 0);
881 infer(loop_filter_ref_deltas[AV1_REF_FRAME_BWDREF], 0);
882 infer(loop_filter_ref_deltas[AV1_REF_FRAME_GOLDEN], -1);
883 infer(loop_filter_ref_deltas[AV1_REF_FRAME_ALTREF], -1);
884 infer(loop_filter_ref_deltas[AV1_REF_FRAME_ALTREF2], -1);
885 for (i = 0; i < 2; i++)
886 infer(loop_filter_mode_deltas[i], 0);
887 return 0;
888 }
889
890 fb(6, loop_filter_level[0]);
891 fb(6, loop_filter_level[1]);
892
893 if (priv->num_planes > 1) {
894 if (current->loop_filter_level[0] ||
895 current->loop_filter_level[1]) {
896 fb(6, loop_filter_level[2]);
897 fb(6, loop_filter_level[3]);
898 }
899 }
900
901 fb(3, loop_filter_sharpness);
902
903 flag(loop_filter_delta_enabled);
904 if (current->loop_filter_delta_enabled) {
905 const int8_t *ref_loop_filter_ref_deltas, *ref_loop_filter_mode_deltas;
906
907 if (current->primary_ref_frame == AV1_PRIMARY_REF_NONE) {
908 ref_loop_filter_ref_deltas = default_loop_filter_ref_deltas;
909 ref_loop_filter_mode_deltas = default_loop_filter_mode_deltas;
910 } else {
911 ref_loop_filter_ref_deltas =
912 priv->ref[current->ref_frame_idx[current->primary_ref_frame]].loop_filter_ref_deltas;
913 ref_loop_filter_mode_deltas =
914 priv->ref[current->ref_frame_idx[current->primary_ref_frame]].loop_filter_mode_deltas;
915 }
916
917 flag(loop_filter_delta_update);
918 for (i = 0; i < AV1_TOTAL_REFS_PER_FRAME; i++) {
919 if (current->loop_filter_delta_update)
920 flags(update_ref_delta[i], 1, i);
921 else
922 infer(update_ref_delta[i], 0);
923 if (current->update_ref_delta[i])
924 sus(1 + 6, loop_filter_ref_deltas[i], 1, i);
925 else
926 infer(loop_filter_ref_deltas[i], ref_loop_filter_ref_deltas[i]);
927 }
928 for (i = 0; i < 2; i++) {
929 if (current->loop_filter_delta_update)
930 flags(update_mode_delta[i], 1, i);
931 else
932 infer(update_mode_delta[i], 0);
933 if (current->update_mode_delta[i])
934 sus(1 + 6, loop_filter_mode_deltas[i], 1, i);
935 else
936 infer(loop_filter_mode_deltas[i], ref_loop_filter_mode_deltas[i]);
937 }
938 } else {
939 for (i = 0; i < AV1_TOTAL_REFS_PER_FRAME; i++)
940 infer(loop_filter_ref_deltas[i], default_loop_filter_ref_deltas[i]);
941 for (i = 0; i < 2; i++)
942 infer(loop_filter_mode_deltas[i], default_loop_filter_mode_deltas[i]);
943 }
944
945 return 0;
946 }
947
948 static int FUNC(cdef_params)(CodedBitstreamContext *ctx, RWContext *rw,
949 AV1RawFrameHeader *current)
950 {
951 CodedBitstreamAV1Context *priv = ctx->priv_data;
952 const AV1RawSequenceHeader *seq = priv->sequence_header;
953 int i, err;
954
955 if (priv->coded_lossless || current->allow_intrabc ||
956 !seq->enable_cdef) {
957 infer(cdef_damping_minus_3, 0);
958 infer(cdef_bits, 0);
959 infer(cdef_y_pri_strength[0], 0);
960 infer(cdef_y_sec_strength[0], 0);
961 infer(cdef_uv_pri_strength[0], 0);
962 infer(cdef_uv_sec_strength[0], 0);
963
964 return 0;
965 }
966
967 fb(2, cdef_damping_minus_3);
968 fb(2, cdef_bits);
969
970 for (i = 0; i < (1 << current->cdef_bits); i++) {
971 fbs(4, cdef_y_pri_strength[i], 1, i);
972 fbs(2, cdef_y_sec_strength[i], 1, i);
973
974 if (priv->num_planes > 1) {
975 fbs(4, cdef_uv_pri_strength[i], 1, i);
976 fbs(2, cdef_uv_sec_strength[i], 1, i);
977 }
978 }
979
980 return 0;
981 }
982
983 static int FUNC(lr_params)(CodedBitstreamContext *ctx, RWContext *rw,
984 AV1RawFrameHeader *current)
985 {
986 CodedBitstreamAV1Context *priv = ctx->priv_data;
987 const AV1RawSequenceHeader *seq = priv->sequence_header;
988 int uses_lr, uses_chroma_lr;
989 int i, err;
990
991 if (priv->all_lossless || current->allow_intrabc ||
992 !seq->enable_restoration) {
993 return 0;
994 }
995
996 uses_lr = uses_chroma_lr = 0;
997 for (i = 0; i < priv->num_planes; i++) {
998 fbs(2, lr_type[i], 1, i);
999
1000 if (current->lr_type[i] != AV1_RESTORE_NONE) {
1001 uses_lr = 1;
1002 if (i > 0)
1003 uses_chroma_lr = 1;
1004 }
1005 }
1006
1007 if (uses_lr) {
1008 if (seq->use_128x128_superblock)
1009 increment(lr_unit_shift, 1, 2);
1010 else
1011 increment(lr_unit_shift, 0, 2);
1012
1013 if(seq->color_config.subsampling_x &&
1014 seq->color_config.subsampling_y && uses_chroma_lr) {
1015 fb(1, lr_uv_shift);
1016 } else {
1017 infer(lr_uv_shift, 0);
1018 }
1019 }
1020
1021 return 0;
1022 }
1023
1024 static int FUNC(read_tx_mode)(CodedBitstreamContext *ctx, RWContext *rw,
1025 AV1RawFrameHeader *current)
1026 {
1027 CodedBitstreamAV1Context *priv = ctx->priv_data;
1028 int err;
1029
1030 if (priv->coded_lossless)
1031 infer(tx_mode, AV1_ONLY_4X4);
1032 else
1033 increment(tx_mode, AV1_TX_MODE_LARGEST, AV1_TX_MODE_SELECT);
1034
1035 return 0;
1036 }
1037
1038 static int FUNC(frame_reference_mode)(CodedBitstreamContext *ctx, RWContext *rw,
1039 AV1RawFrameHeader *current)
1040 {
1041 int err;
1042
1043 if (current->frame_type == AV1_FRAME_INTRA_ONLY ||
1044 current->frame_type == AV1_FRAME_KEY)
1045 infer(reference_select, 0);
1046 else
1047 flag(reference_select);
1048
1049 return 0;
1050 }
1051
1052 static int FUNC(skip_mode_params)(CodedBitstreamContext *ctx, RWContext *rw,
1053 AV1RawFrameHeader *current)
1054 {
1055 CodedBitstreamAV1Context *priv = ctx->priv_data;
1056 const AV1RawSequenceHeader *seq = priv->sequence_header;
1057 int skip_mode_allowed;
1058 int err;
1059
1060 if (current->frame_type == AV1_FRAME_KEY ||
1061 current->frame_type == AV1_FRAME_INTRA_ONLY ||
1062 !current->reference_select || !seq->enable_order_hint) {
1063 skip_mode_allowed = 0;
1064 } else {
1065 int forward_idx, backward_idx;
1066 int forward_hint, backward_hint;
1067 int ref_hint, dist, i;
1068
1069 forward_idx = -1;
1070 backward_idx = -1;
1071 for (i = 0; i < AV1_REFS_PER_FRAME; i++) {
1072 ref_hint = priv->ref[current->ref_frame_idx[i]].order_hint;
1073 dist = cbs_av1_get_relative_dist(seq, ref_hint,
1074 priv->order_hint);
1075 if (dist < 0) {
1076 if (forward_idx < 0 ||
1077 cbs_av1_get_relative_dist(seq, ref_hint,
1078 forward_hint) > 0) {
1079 forward_idx = i;
1080 forward_hint = ref_hint;
1081 }
1082 } else if (dist > 0) {
1083 if (backward_idx < 0 ||
1084 cbs_av1_get_relative_dist(seq, ref_hint,
1085 backward_hint) < 0) {
1086 backward_idx = i;
1087 backward_hint = ref_hint;
1088 }
1089 }
1090 }
1091
1092 if (forward_idx < 0) {
1093 skip_mode_allowed = 0;
1094 } else if (backward_idx >= 0) {
1095 skip_mode_allowed = 1;
1096 // Frames for skip mode are forward_idx and backward_idx.
1097 } else {
1098 int second_forward_idx;
1099 int second_forward_hint;
1100
1101 second_forward_idx = -1;
1102 for (i = 0; i < AV1_REFS_PER_FRAME; i++) {
1103 ref_hint = priv->ref[current->ref_frame_idx[i]].order_hint;
1104 if (cbs_av1_get_relative_dist(seq, ref_hint,
1105 forward_hint) < 0) {
1106 if (second_forward_idx < 0 ||
1107 cbs_av1_get_relative_dist(seq, ref_hint,
1108 second_forward_hint) > 0) {
1109 second_forward_idx = i;
1110 second_forward_hint = ref_hint;
1111 }
1112 }
1113 }
1114
1115 if (second_forward_idx < 0) {
1116 skip_mode_allowed = 0;
1117 } else {
1118 skip_mode_allowed = 1;
1119 // Frames for skip mode are forward_idx and second_forward_idx.
1120 }
1121 }
1122 }
1123
1124 if (skip_mode_allowed)
1125 flag(skip_mode_present);
1126 else
1127 infer(skip_mode_present, 0);
1128
1129 return 0;
1130 }
1131
1132 static int FUNC(global_motion_param)(CodedBitstreamContext *ctx, RWContext *rw,
1133 AV1RawFrameHeader *current,
1134 int type, int ref, int idx)
1135 {
1136 uint32_t abs_bits, prec_bits, num_syms;
1137 int err;
1138
1139 if (idx < 2) {
1140 if (type == AV1_WARP_MODEL_TRANSLATION) {
1141 abs_bits = AV1_GM_ABS_TRANS_ONLY_BITS - !current->allow_high_precision_mv;
1142 prec_bits = AV1_GM_TRANS_ONLY_PREC_BITS - !current->allow_high_precision_mv;
1143 } else {
1144 abs_bits = AV1_GM_ABS_TRANS_BITS;
1145 prec_bits = AV1_GM_TRANS_PREC_BITS;
1146 }
1147 } else {
1148 abs_bits = AV1_GM_ABS_ALPHA_BITS;
1149 prec_bits = AV1_GM_ALPHA_PREC_BITS;
1150 }
1151
1152 num_syms = 2 * (1 << abs_bits) + 1;
1153 subexp(gm_params[ref][idx], num_syms, 2, ref, idx);
1154
1155 // Actual gm_params value is not reconstructed here.
1156 (void)prec_bits;
1157
1158 return 0;
1159 }
1160
1161 static int FUNC(global_motion_params)(CodedBitstreamContext *ctx, RWContext *rw,
1162 AV1RawFrameHeader *current)
1163 {
1164 int ref, type;
1165 int err;
1166
1167 if (current->frame_type == AV1_FRAME_KEY ||
1168 current->frame_type == AV1_FRAME_INTRA_ONLY)
1169 return 0;
1170
1171 for (ref = AV1_REF_FRAME_LAST; ref <= AV1_REF_FRAME_ALTREF; ref++) {
1172 flags(is_global[ref], 1, ref);
1173 if (current->is_global[ref]) {
1174 flags(is_rot_zoom[ref], 1, ref);
1175 if (current->is_rot_zoom[ref]) {
1176 type = AV1_WARP_MODEL_ROTZOOM;
1177 } else {
1178 flags(is_translation[ref], 1, ref);
1179 type = current->is_translation[ref] ? AV1_WARP_MODEL_TRANSLATION
1180 : AV1_WARP_MODEL_AFFINE;
1181 }
1182 } else {
1183 type = AV1_WARP_MODEL_IDENTITY;
1184 }
1185
1186 if (type >= AV1_WARP_MODEL_ROTZOOM) {
1187 CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 2));
1188 CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 3));
1189 if (type == AV1_WARP_MODEL_AFFINE) {
1190 CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 4));
1191 CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 5));
1192 } else {
1193 // gm_params[ref][4] = -gm_params[ref][3]
1194 // gm_params[ref][5] = gm_params[ref][2]
1195 }
1196 }
1197 if (type >= AV1_WARP_MODEL_TRANSLATION) {
1198 CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 0));
1199 CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 1));
1200 }
1201 }
1202
1203 return 0;
1204 }
1205
1206 static int FUNC(film_grain_params)(CodedBitstreamContext *ctx, RWContext *rw,
1207 AV1RawFilmGrainParams *current,
1208 AV1RawFrameHeader *frame_header)
1209 {
1210 CodedBitstreamAV1Context *priv = ctx->priv_data;
1211 const AV1RawSequenceHeader *seq = priv->sequence_header;
1212 int num_pos_luma, num_pos_chroma;
1213 int i, err;
1214
1215 if (!seq->film_grain_params_present ||
1216 (!frame_header->show_frame && !frame_header->showable_frame))
1217 return 0;
1218
1219 flag(apply_grain);
1220
1221 if (!current->apply_grain)
1222 return 0;
1223
1224 fb(16, grain_seed);
1225
1226 if (frame_header->frame_type == AV1_FRAME_INTER)
1227 flag(update_grain);
1228 else
1229 infer(update_grain, 1);
1230
1231 if (!current->update_grain) {
1232 fb(3, film_grain_params_ref_idx);
1233 return 0;
1234 }
1235
1236 fc(4, num_y_points, 0, 14);
1237 for (i = 0; i < current->num_y_points; i++) {
1238 fcs(8, point_y_value[i],
1239 i ? current->point_y_value[i - 1] + 1 : 0,
1240 MAX_UINT_BITS(8) - (current->num_y_points - i - 1),
1241 1, i);
1242 fbs(8, point_y_scaling[i], 1, i);
1243 }
1244
1245 if (seq->color_config.mono_chrome)
1246 infer(chroma_scaling_from_luma, 0);
1247 else
1248 flag(chroma_scaling_from_luma);
1249
1250 if (seq->color_config.mono_chrome ||
1251 current->chroma_scaling_from_luma ||
1252 (seq->color_config.subsampling_x == 1 &&
1253 seq->color_config.subsampling_y == 1 &&
1254 current->num_y_points == 0)) {
1255 infer(num_cb_points, 0);
1256 infer(num_cr_points, 0);
1257 } else {
1258 fc(4, num_cb_points, 0, 10);
1259 for (i = 0; i < current->num_cb_points; i++) {
1260 fcs(8, point_cb_value[i],
1261 i ? current->point_cb_value[i - 1] + 1 : 0,
1262 MAX_UINT_BITS(8) - (current->num_cb_points - i - 1),
1263 1, i);
1264 fbs(8, point_cb_scaling[i], 1, i);
1265 }
1266 fc(4, num_cr_points, 0, 10);
1267 for (i = 0; i < current->num_cr_points; i++) {
1268 fcs(8, point_cr_value[i],
1269 i ? current->point_cr_value[i - 1] + 1 : 0,
1270 MAX_UINT_BITS(8) - (current->num_cr_points - i - 1),
1271 1, i);
1272 fbs(8, point_cr_scaling[i], 1, i);
1273 }
1274 }
1275
1276 fb(2, grain_scaling_minus_8);
1277 fb(2, ar_coeff_lag);
1278 num_pos_luma = 2 * current->ar_coeff_lag * (current->ar_coeff_lag + 1);
1279 if (current->num_y_points) {
1280 num_pos_chroma = num_pos_luma + 1;
1281 for (i = 0; i < num_pos_luma; i++)
1282 fbs(8, ar_coeffs_y_plus_128[i], 1, i);
1283 } else {
1284 num_pos_chroma = num_pos_luma;
1285 }
1286 if (current->chroma_scaling_from_luma || current->num_cb_points) {
1287 for (i = 0; i < num_pos_chroma; i++)
1288 fbs(8, ar_coeffs_cb_plus_128[i], 1, i);
1289 }
1290 if (current->chroma_scaling_from_luma || current->num_cr_points) {
1291 for (i = 0; i < num_pos_chroma; i++)
1292 fbs(8, ar_coeffs_cr_plus_128[i], 1, i);
1293 }
1294 fb(2, ar_coeff_shift_minus_6);
1295 fb(2, grain_scale_shift);
1296 if (current->num_cb_points) {
1297 fb(8, cb_mult);
1298 fb(8, cb_luma_mult);
1299 fb(9, cb_offset);
1300 }
1301 if (current->num_cr_points) {
1302 fb(8, cr_mult);
1303 fb(8, cr_luma_mult);
1304 fb(9, cr_offset);
1305 }
1306
1307 flag(overlap_flag);
1308 flag(clip_to_restricted_range);
1309
1310 return 0;
1311 }
1312
1313 static int FUNC(uncompressed_header)(CodedBitstreamContext *ctx, RWContext *rw,
1314 AV1RawFrameHeader *current)
1315 {
1316 CodedBitstreamAV1Context *priv = ctx->priv_data;
1317 const AV1RawSequenceHeader *seq;
1318 int id_len, diff_len, all_frames, frame_is_intra, order_hint_bits;
1319 int i, err;
1320
1321 if (!priv->sequence_header) {
1322 av_log(ctx->log_ctx, AV_LOG_ERROR, "No sequence header available: "
1323 "unable to decode frame header.\n");
1324 return AVERROR_INVALIDDATA;
1325 }
1326 seq = priv->sequence_header;
1327
1328 id_len = seq->additional_frame_id_length_minus_1 +
1329 seq->delta_frame_id_length_minus_2 + 3;
1330 all_frames = (1 << AV1_NUM_REF_FRAMES) - 1;
1331
1332 if (seq->reduced_still_picture_header) {
1333 infer(show_existing_frame, 0);
1334 infer(frame_type, AV1_FRAME_KEY);
1335 infer(show_frame, 1);
1336 infer(showable_frame, 0);
1337 frame_is_intra = 1;
1338
1339 } else {
1340 flag(show_existing_frame);
1341
1342 if (current->show_existing_frame) {
1343 AV1ReferenceFrameState *ref;
1344
1345 fb(3, frame_to_show_map_idx);
1346 ref = &priv->ref[current->frame_to_show_map_idx];
1347
1348 if (!ref->valid) {
1349 av_log(ctx->log_ctx, AV_LOG_ERROR, "Missing reference frame needed for "
1350 "show_existing_frame (frame_to_show_map_idx = %d).\n",
1351 current->frame_to_show_map_idx);
1352 return AVERROR_INVALIDDATA;
1353 }
1354
1355 if (seq->decoder_model_info_present_flag &&
1356 !seq->timing_info.equal_picture_interval) {
1357 fb(seq->decoder_model_info.frame_presentation_time_length_minus_1 + 1,
1358 frame_presentation_time);
1359 }
1360
1361 if (seq->frame_id_numbers_present_flag)
1362 fb(id_len, display_frame_id);
1363
1364 infer(frame_type, ref->frame_type);
1365 if (current->frame_type == AV1_FRAME_KEY) {
1366 infer(refresh_frame_flags, all_frames);
1367
1368 // Section 7.21
1369 infer(current_frame_id, ref->frame_id);
1370 priv->upscaled_width = ref->upscaled_width;
1371 priv->frame_width = ref->frame_width;
1372 priv->frame_height = ref->frame_height;
1373 priv->render_width = ref->render_width;
1374 priv->render_height = ref->render_height;
1375 priv->bit_depth = ref->bit_depth;
1376 priv->order_hint = ref->order_hint;
1377 } else
1378 infer(refresh_frame_flags, 0);
1379
1380 infer(frame_width_minus_1, ref->upscaled_width - 1);
1381 infer(frame_height_minus_1, ref->frame_height - 1);
1382 infer(render_width_minus_1, ref->render_width - 1);
1383 infer(render_height_minus_1, ref->render_height - 1);
1384
1385 // Section 7.20
1386 goto update_refs;
1387 }
1388
1389 fb(2, frame_type);
1390 frame_is_intra = (current->frame_type == AV1_FRAME_INTRA_ONLY ||
1391 current->frame_type == AV1_FRAME_KEY);
1392
1393 flag(show_frame);
1394 if (current->show_frame &&
1395 seq->decoder_model_info_present_flag &&
1396 !seq->timing_info.equal_picture_interval) {
1397 fb(seq->decoder_model_info.frame_presentation_time_length_minus_1 + 1,
1398 frame_presentation_time);
1399 }
1400 if (current->show_frame)
1401 infer(showable_frame, current->frame_type != AV1_FRAME_KEY);
1402 else
1403 flag(showable_frame);
1404
1405 if (current->frame_type == AV1_FRAME_SWITCH ||
1406 (current->frame_type == AV1_FRAME_KEY && current->show_frame))
1407 infer(error_resilient_mode, 1);
1408 else
1409 flag(error_resilient_mode);
1410 }
1411
1412 if (current->frame_type == AV1_FRAME_KEY && current->show_frame) {
1413 for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
1414 priv->ref[i].valid = 0;
1415 priv->ref[i].order_hint = 0;
1416 }
1417 }
1418
1419 flag(disable_cdf_update);
1420
1421 if (seq->seq_force_screen_content_tools ==
1422 AV1_SELECT_SCREEN_CONTENT_TOOLS) {
1423 flag(allow_screen_content_tools);
1424 } else {
1425 infer(allow_screen_content_tools,
1426 seq->seq_force_screen_content_tools);
1427 }
1428 if (current->allow_screen_content_tools) {
1429 if (seq->seq_force_integer_mv == AV1_SELECT_INTEGER_MV)
1430 flag(force_integer_mv);
1431 else
1432 infer(force_integer_mv, seq->seq_force_integer_mv);
1433 } else {
1434 infer(force_integer_mv, 0);
1435 }
1436
1437 if (seq->frame_id_numbers_present_flag) {
1438 fb(id_len, current_frame_id);
1439
1440 diff_len = seq->delta_frame_id_length_minus_2 + 2;
1441 for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
1442 if (current->current_frame_id > (1 << diff_len)) {
1443 if (priv->ref[i].frame_id > current->current_frame_id ||
1444 priv->ref[i].frame_id < (current->current_frame_id -
1445 (1 << diff_len)))
1446 priv->ref[i].valid = 0;
1447 } else {
1448 if (priv->ref[i].frame_id > current->current_frame_id &&
1449 priv->ref[i].frame_id < ((1 << id_len) +
1450 current->current_frame_id -
1451 (1 << diff_len)))
1452 priv->ref[i].valid = 0;
1453 }
1454 }
1455 } else {
1456 infer(current_frame_id, 0);
1457 }
1458
1459 if (current->frame_type == AV1_FRAME_SWITCH)
1460 infer(frame_size_override_flag, 1);
1461 else if(seq->reduced_still_picture_header)
1462 infer(frame_size_override_flag, 0);
1463 else
1464 flag(frame_size_override_flag);
1465
1466 order_hint_bits =
1467 seq->enable_order_hint ? seq->order_hint_bits_minus_1 + 1 : 0;
1468 if (order_hint_bits > 0)
1469 fb(order_hint_bits, order_hint);
1470 else
1471 infer(order_hint, 0);
1472 priv->order_hint = current->order_hint;
1473
1474 if (frame_is_intra || current->error_resilient_mode)
1475 infer(primary_ref_frame, AV1_PRIMARY_REF_NONE);
1476 else
1477 fb(3, primary_ref_frame);
1478
1479 if (seq->decoder_model_info_present_flag) {
1480 flag(buffer_removal_time_present_flag);
1481 if (current->buffer_removal_time_present_flag) {
1482 for (i = 0; i <= seq->operating_points_cnt_minus_1; i++) {
1483 if (seq->decoder_model_present_for_this_op[i]) {
1484 int op_pt_idc = seq->operating_point_idc[i];
1485 int in_temporal_layer = (op_pt_idc >> priv->temporal_id ) & 1;
1486 int in_spatial_layer = (op_pt_idc >> (priv->spatial_id + 8)) & 1;
1487 if (seq->operating_point_idc[i] == 0 ||
1488 (in_temporal_layer && in_spatial_layer)) {
1489 fbs(seq->decoder_model_info.buffer_removal_time_length_minus_1 + 1,
1490 buffer_removal_time[i], 1, i);
1491 }
1492 }
1493 }
1494 }
1495 }
1496
1497 if (current->frame_type == AV1_FRAME_SWITCH ||
1498 (current->frame_type == AV1_FRAME_KEY && current->show_frame))
1499 infer(refresh_frame_flags, all_frames);
1500 else
1501 fb(8, refresh_frame_flags);
1502
1503 if (!frame_is_intra || current->refresh_frame_flags != all_frames) {
1504 if (seq->enable_order_hint) {
1505 for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
1506 if (current->error_resilient_mode)
1507 fbs(order_hint_bits, ref_order_hint[i], 1, i);
1508 else
1509 infer(ref_order_hint[i], priv->ref[i].order_hint);
1510 if (current->ref_order_hint[i] != priv->ref[i].order_hint)
1511 priv->ref[i].valid = 0;
1512 }
1513 }
1514 }
1515
1516 if (current->frame_type == AV1_FRAME_KEY ||
1517 current->frame_type == AV1_FRAME_INTRA_ONLY) {
1518 CHECK(FUNC(frame_size)(ctx, rw, current));
1519 CHECK(FUNC(render_size)(ctx, rw, current));
1520
1521 if (current->allow_screen_content_tools &&
1522 priv->upscaled_width == priv->frame_width)
1523 flag(allow_intrabc);
1524 else
1525 infer(allow_intrabc, 0);
1526
1527 } else {
1528 if (!seq->enable_order_hint) {
1529 infer(frame_refs_short_signaling, 0);
1530 } else {
1531 flag(frame_refs_short_signaling);
1532 if (current->frame_refs_short_signaling) {
1533 fb(3, last_frame_idx);
1534 fb(3, golden_frame_idx);
1535 CHECK(FUNC(set_frame_refs)(ctx, rw, current));
1536 }
1537 }
1538
1539 for (i = 0; i < AV1_REFS_PER_FRAME; i++) {
1540 if (!current->frame_refs_short_signaling)
1541 fbs(3, ref_frame_idx[i], 1, i);
1542 if (seq->frame_id_numbers_present_flag) {
1543 fbs(seq->delta_frame_id_length_minus_2 + 2,
1544 delta_frame_id_minus1[i], 1, i);
1545 }
1546 }
1547
1548 if (current->frame_size_override_flag &&
1549 !current->error_resilient_mode) {
1550 CHECK(FUNC(frame_size_with_refs)(ctx, rw, current));
1551 } else {
1552 CHECK(FUNC(frame_size)(ctx, rw, current));
1553 CHECK(FUNC(render_size)(ctx, rw, current));
1554 }
1555
1556 if (current->force_integer_mv)
1557 infer(allow_high_precision_mv, 0);
1558 else
1559 flag(allow_high_precision_mv);
1560
1561 CHECK(FUNC(interpolation_filter)(ctx, rw, current));
1562
1563 flag(is_motion_mode_switchable);
1564
1565 if (current->error_resilient_mode ||
1566 !seq->enable_ref_frame_mvs)
1567 infer(use_ref_frame_mvs, 0);
1568 else
1569 flag(use_ref_frame_mvs);
1570
1571 infer(allow_intrabc, 0);
1572 }
1573
1574 if (!frame_is_intra) {
1575 // Derive reference frame sign biases.
1576 }
1577
1578 if (seq->reduced_still_picture_header || current->disable_cdf_update)
1579 infer(disable_frame_end_update_cdf, 1);
1580 else
1581 flag(disable_frame_end_update_cdf);
1582
1583 if (current->primary_ref_frame == AV1_PRIMARY_REF_NONE) {
1584 // Init non-coeff CDFs.
1585 // Setup past independence.
1586 } else {
1587 // Load CDF tables from previous frame.
1588 // Load params from previous frame.
1589 }
1590
1591 if (current->use_ref_frame_mvs) {
1592 // Perform motion field estimation process.
1593 }
1594
1595 CHECK(FUNC(tile_info)(ctx, rw, current));
1596
1597 CHECK(FUNC(quantization_params)(ctx, rw, current));
1598
1599 CHECK(FUNC(segmentation_params)(ctx, rw, current));
1600
1601 CHECK(FUNC(delta_q_params)(ctx, rw, current));
1602
1603 CHECK(FUNC(delta_lf_params)(ctx, rw, current));
1604
1605 // Init coeff CDFs / load previous segments.
1606
1607 priv->coded_lossless = 1;
1608 for (i = 0; i < AV1_MAX_SEGMENTS; i++) {
1609 int qindex;
1610 if (current->feature_enabled[i][AV1_SEG_LVL_ALT_Q]) {
1611 qindex = (current->base_q_idx +
1612 current->feature_value[i][AV1_SEG_LVL_ALT_Q]);
1613 } else {
1614 qindex = current->base_q_idx;
1615 }
1616 qindex = av_clip_uintp2(qindex, 8);
1617
1618 if (qindex || current->delta_q_y_dc ||
1619 current->delta_q_u_ac || current->delta_q_u_dc ||
1620 current->delta_q_v_ac || current->delta_q_v_dc) {
1621 priv->coded_lossless = 0;
1622 }
1623 }
1624 priv->all_lossless = priv->coded_lossless &&
1625 priv->frame_width == priv->upscaled_width;
1626
1627 CHECK(FUNC(loop_filter_params)(ctx, rw, current));
1628
1629 CHECK(FUNC(cdef_params)(ctx, rw, current));
1630
1631 CHECK(FUNC(lr_params)(ctx, rw, current));
1632
1633 CHECK(FUNC(read_tx_mode)(ctx, rw, current));
1634
1635 CHECK(FUNC(frame_reference_mode)(ctx, rw, current));
1636
1637 CHECK(FUNC(skip_mode_params)(ctx, rw, current));
1638
1639 if (frame_is_intra || current->error_resilient_mode ||
1640 !seq->enable_warped_motion)
1641 infer(allow_warped_motion, 0);
1642 else
1643 flag(allow_warped_motion);
1644
1645 flag(reduced_tx_set);
1646
1647 CHECK(FUNC(global_motion_params)(ctx, rw, current));
1648
1649 CHECK(FUNC(film_grain_params)(ctx, rw, &current->film_grain, current));
1650
1651 av_log(ctx->log_ctx, AV_LOG_DEBUG, "Frame %d: size %dx%d "
1652 "upscaled %d render %dx%d subsample %dx%d "
1653 "bitdepth %d tiles %dx%d.\n", priv->order_hint,
1654 priv->frame_width, priv->frame_height, priv->upscaled_width,
1655 priv->render_width, priv->render_height,
1656 seq->color_config.subsampling_x + 1,
1657 seq->color_config.subsampling_y + 1, priv->bit_depth,
1658 priv->tile_rows, priv->tile_cols);
1659
1660 update_refs:
1661 for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
1662 if (current->refresh_frame_flags & (1 << i)) {
1663 priv->ref[i] = (AV1ReferenceFrameState) {
1664 .valid = 1,
1665 .frame_id = current->current_frame_id,
1666 .upscaled_width = priv->upscaled_width,
1667 .frame_width = priv->frame_width,
1668 .frame_height = priv->frame_height,
1669 .render_width = priv->render_width,
1670 .render_height = priv->render_height,
1671 .frame_type = current->frame_type,
1672 .subsampling_x = seq->color_config.subsampling_x,
1673 .subsampling_y = seq->color_config.subsampling_y,
1674 .bit_depth = priv->bit_depth,
1675 .order_hint = priv->order_hint,
1676 };
1677 memcpy(priv->ref[i].loop_filter_ref_deltas, current->loop_filter_ref_deltas,
1678 sizeof(current->loop_filter_ref_deltas));
1679 memcpy(priv->ref[i].loop_filter_mode_deltas, current->loop_filter_mode_deltas,
1680 sizeof(current->loop_filter_mode_deltas));
1681 memcpy(priv->ref[i].feature_enabled, current->feature_enabled,
1682 sizeof(current->feature_enabled));
1683 memcpy(priv->ref[i].feature_value, current->feature_value,
1684 sizeof(current->feature_value));
1685 }
1686 }
1687
1688 return 0;
1689 }
1690
1691 static int FUNC(frame_header_obu)(CodedBitstreamContext *ctx, RWContext *rw,
1692 AV1RawFrameHeader *current, int redundant,
1693 AVBufferRef *rw_buffer_ref)
1694 {
1695 CodedBitstreamAV1Context *priv = ctx->priv_data;
1696 int start_pos, fh_bits, fh_bytes, err;
1697 uint8_t *fh_start;
1698
1699 if (priv->seen_frame_header) {
1700 if (!redundant) {
1701 av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid repeated "
1702 "frame header OBU.\n");
1703 return AVERROR_INVALIDDATA;
1704 } else {
1705 GetBitContext fh;
1706 size_t i, b;
1707 uint32_t val;
1708
1709 HEADER("Redundant Frame Header");
1710
1711 av_assert0(priv->frame_header_ref && priv->frame_header);
1712
1713 init_get_bits(&fh, priv->frame_header,
1714 priv->frame_header_size);
1715 for (i = 0; i < priv->frame_header_size; i += 8) {
1716 b = FFMIN(priv->frame_header_size - i, 8);
1717 val = get_bits(&fh, b);
1718 xf(b, frame_header_copy[i],
1719 val, val, val, 1, i / 8);
1720 }
1721 }
1722 } else {
1723 if (redundant)
1724 HEADER("Redundant Frame Header (used as Frame Header)");
1725 else
1726 HEADER("Frame Header");
1727
1728 #ifdef READ
1729 start_pos = get_bits_count(rw);
1730 #else
1731 start_pos = put_bits_count(rw);
1732 #endif
1733
1734 CHECK(FUNC(uncompressed_header)(ctx, rw, current));
1735
1736 priv->tile_num = 0;
1737
1738 if (current->show_existing_frame) {
1739 priv->seen_frame_header = 0;
1740 } else {
1741 priv->seen_frame_header = 1;
1742
1743 av_buffer_unref(&priv->frame_header_ref);
1744
1745 #ifdef READ
1746 fh_bits = get_bits_count(rw) - start_pos;
1747 fh_start = (uint8_t*)rw->buffer + start_pos / 8;
1748 #else
1749 // Need to flush the bitwriter so that we can copy its output,
1750 // but use a copy so we don't affect the caller's structure.
1751 {
1752 PutBitContext tmp = *rw;
1753 flush_put_bits(&tmp);
1754 }
1755
1756 fh_bits = put_bits_count(rw) - start_pos;
1757 fh_start = rw->buf + start_pos / 8;
1758 #endif
1759 fh_bytes = (fh_bits + 7) / 8;
1760
1761 priv->frame_header_size = fh_bits;
1762
1763 if (rw_buffer_ref) {
1764 priv->frame_header_ref = av_buffer_ref(rw_buffer_ref);
1765 if (!priv->frame_header_ref)
1766 return AVERROR(ENOMEM);
1767 priv->frame_header = fh_start;
1768 } else {
1769 priv->frame_header_ref =
1770 av_buffer_alloc(fh_bytes + AV_INPUT_BUFFER_PADDING_SIZE);
1771 if (!priv->frame_header_ref)
1772 return AVERROR(ENOMEM);
1773 priv->frame_header = priv->frame_header_ref->data;
1774 memcpy(priv->frame_header, fh_start, fh_bytes);
1775 }
1776 }
1777 }
1778
1779 return 0;
1780 }
1781
1782 static int FUNC(tile_group_obu)(CodedBitstreamContext *ctx, RWContext *rw,
1783 AV1RawTileGroup *current)
1784 {
1785 CodedBitstreamAV1Context *priv = ctx->priv_data;
1786 int num_tiles, tile_bits;
1787 int err;
1788
1789 HEADER("Tile Group");
1790
1791 num_tiles = priv->tile_cols * priv->tile_rows;
1792 if (num_tiles > 1)
1793 flag(tile_start_and_end_present_flag);
1794 else
1795 infer(tile_start_and_end_present_flag, 0);
1796
1797 if (num_tiles == 1 || !current->tile_start_and_end_present_flag) {
1798 infer(tg_start, 0);
1799 infer(tg_end, num_tiles - 1);
1800 } else {
1801 tile_bits = cbs_av1_tile_log2(1, priv->tile_cols) +
1802 cbs_av1_tile_log2(1, priv->tile_rows);
1803 fc(tile_bits, tg_start, priv->tile_num, num_tiles - 1);
1804 fc(tile_bits, tg_end, current->tg_start, num_tiles - 1);
1805 }
1806
1807 priv->tile_num = current->tg_end + 1;
1808
1809 CHECK(FUNC(byte_alignment)(ctx, rw));
1810
1811 // Reset header for next frame.
1812 if (current->tg_end == num_tiles - 1)
1813 priv->seen_frame_header = 0;
1814
1815 // Tile data follows.
1816
1817 return 0;
1818 }
1819
1820 static int FUNC(frame_obu)(CodedBitstreamContext *ctx, RWContext *rw,
1821 AV1RawFrame *current,
1822 AVBufferRef *rw_buffer_ref)
1823 {
1824 int err;
1825
1826 CHECK(FUNC(frame_header_obu)(ctx, rw, &current->header,
1827 0, rw_buffer_ref));
1828
1829 CHECK(FUNC(byte_alignment)(ctx, rw));
1830
1831 CHECK(FUNC(tile_group_obu)(ctx, rw, &current->tile_group));
1832
1833 return 0;
1834 }
1835
1836 static int FUNC(tile_list_obu)(CodedBitstreamContext *ctx, RWContext *rw,
1837 AV1RawTileList *current)
1838 {
1839 int err;
1840
1841 fb(8, output_frame_width_in_tiles_minus_1);
1842 fb(8, output_frame_height_in_tiles_minus_1);
1843
1844 fb(16, tile_count_minus_1);
1845
1846 // Tile data follows.
1847
1848 return 0;
1849 }
1850
1851 static int FUNC(metadata_hdr_cll)(CodedBitstreamContext *ctx, RWContext *rw,
1852 AV1RawMetadataHDRCLL *current)
1853 {
1854 int err;
1855
1856 HEADER("HDR CLL Metadata");
1857
1858 fb(16, max_cll);
1859 fb(16, max_fall);
1860
1861 return 0;
1862 }
1863
1864 static int FUNC(metadata_hdr_mdcv)(CodedBitstreamContext *ctx, RWContext *rw,
1865 AV1RawMetadataHDRMDCV *current)
1866 {
1867 int err, i;
1868
1869 HEADER("HDR MDCV Metadata");
1870
1871 for (i = 0; i < 3; i++) {
1872 fbs(16, primary_chromaticity_x[i], 1, i);
1873 fbs(16, primary_chromaticity_y[i], 1, i);
1874 }
1875
1876 fb(16, white_point_chromaticity_x);
1877 fb(16, white_point_chromaticity_y);
1878
1879 fb(32, luminance_max);
1880 fb(32, luminance_min);
1881
1882 return 0;
1883 }
1884
1885 static int FUNC(scalability_structure)(CodedBitstreamContext *ctx, RWContext *rw,
1886 AV1RawMetadataScalability *current)
1887 {
1888 CodedBitstreamAV1Context *priv = ctx->priv_data;
1889 const AV1RawSequenceHeader *seq;
1890 int err, i, j;
1891
1892 if (!priv->sequence_header) {
1893 av_log(ctx->log_ctx, AV_LOG_ERROR, "No sequence header available: "
1894 "unable to parse scalability metadata.\n");
1895 return AVERROR_INVALIDDATA;
1896 }
1897 seq = priv->sequence_header;
1898
1899 fb(2, spatial_layers_cnt_minus_1);
1900 flag(spatial_layer_dimensions_present_flag);
1901 flag(spatial_layer_description_present_flag);
1902 flag(temporal_group_description_present_flag);
1903 fc(3, scalability_structure_reserved_3bits, 0, 0);
1904 if (current->spatial_layer_dimensions_present_flag) {
1905 for (i = 0; i <= current->spatial_layers_cnt_minus_1; i++) {
1906 fcs(16, spatial_layer_max_width[i],
1907 0, seq->max_frame_width_minus_1 + 1, 1, i);
1908 fcs(16, spatial_layer_max_height[i],
1909 0, seq->max_frame_height_minus_1 + 1, 1, i);
1910 }
1911 }
1912 if (current->spatial_layer_description_present_flag) {
1913 for (i = 0; i <= current->spatial_layers_cnt_minus_1; i++)
1914 fbs(8, spatial_layer_ref_id[i], 1, i);
1915 }
1916 if (current->temporal_group_description_present_flag) {
1917 fb(8, temporal_group_size);
1918 for (i = 0; i < current->temporal_group_size; i++) {
1919 fbs(3, temporal_group_temporal_id[i], 1, i);
1920 flags(temporal_group_temporal_switching_up_point_flag[i], 1, i);
1921 flags(temporal_group_spatial_switching_up_point_flag[i], 1, i);
1922 fbs(3, temporal_group_ref_cnt[i], 1, i);
1923 for (j = 0; j < current->temporal_group_ref_cnt[i]; j++) {
1924 fbs(8, temporal_group_ref_pic_diff[i][j], 2, i, j);
1925 }
1926 }
1927 }
1928
1929 return 0;
1930 }
1931
1932 static int FUNC(metadata_scalability)(CodedBitstreamContext *ctx, RWContext *rw,
1933 AV1RawMetadataScalability *current)
1934 {
1935 int err;
1936
1937 HEADER("Scalability Metadata");
1938
1939 fb(8, scalability_mode_idc);
1940
1941 if (current->scalability_mode_idc == AV1_SCALABILITY_SS)
1942 CHECK(FUNC(scalability_structure)(ctx, rw, current));
1943
1944 return 0;
1945 }
1946
1947 static int FUNC(metadata_itut_t35)(CodedBitstreamContext *ctx, RWContext *rw,
1948 AV1RawMetadataITUTT35 *current)
1949 {
1950 int err;
1951 size_t i;
1952
1953 HEADER("ITU-T T.35 Metadata");
1954
1955 fb(8, itu_t_t35_country_code);
1956 if (current->itu_t_t35_country_code == 0xff)
1957 fb(8, itu_t_t35_country_code_extension_byte);
1958
1959 #ifdef READ
1960 // The payload runs up to the start of the trailing bits, but there might
1961 // be arbitrarily many trailing zeroes so we need to read through twice.
1962 current->payload_size = cbs_av1_get_payload_bytes_left(rw);
1963
1964 current->payload_ref = av_buffer_alloc(current->payload_size);
1965 if (!current->payload_ref)
1966 return AVERROR(ENOMEM);
1967 current->payload = current->payload_ref->data;
1968 #endif
1969
1970 for (i = 0; i < current->payload_size; i++)
1971 xf(8, itu_t_t35_payload_bytes[i], current->payload[i],
1972 0x00, 0xff, 1, i);
1973
1974 return 0;
1975 }
1976
1977 static int FUNC(metadata_timecode)(CodedBitstreamContext *ctx, RWContext *rw,
1978 AV1RawMetadataTimecode *current)
1979 {
1980 int err;
1981
1982 HEADER("Timecode Metadata");
1983
1984 fb(5, counting_type);
1985 flag(full_timestamp_flag);
1986 flag(discontinuity_flag);
1987 flag(cnt_dropped_flag);
1988 fb(9, n_frames);
1989
1990 if (current->full_timestamp_flag) {
1991 fc(6, seconds_value, 0, 59);
1992 fc(6, minutes_value, 0, 59);
1993 fc(5, hours_value, 0, 23);
1994 } else {
1995 flag(seconds_flag);
1996 if (current->seconds_flag) {
1997 fc(6, seconds_value, 0, 59);
1998 flag(minutes_flag);
1999 if (current->minutes_flag) {
2000 fc(6, minutes_value, 0, 59);
2001 flag(hours_flag);
2002 if (current->hours_flag)
2003 fc(5, hours_value, 0, 23);
2004 }
2005 }
2006 }
2007
2008 fb(5, time_offset_length);
2009 if (current->time_offset_length > 0)
2010 fb(current->time_offset_length, time_offset_value);
2011 else
2012 infer(time_offset_length, 0);
2013
2014 return 0;
2015 }
2016
2017 static int FUNC(metadata_unknown)(CodedBitstreamContext *ctx, RWContext *rw,
2018 AV1RawMetadataUnknown *current)
2019 {
2020 int err;
2021 size_t i;
2022
2023 HEADER("Unknown Metadata");
2024
2025 #ifdef READ
2026 current->payload_size = cbs_av1_get_payload_bytes_left(rw);
2027
2028 current->payload_ref = av_buffer_alloc(current->payload_size);
2029 if (!current->payload_ref)
2030 return AVERROR(ENOMEM);
2031 current->payload = current->payload_ref->data;
2032 #endif
2033
2034 for (i = 0; i < current->payload_size; i++)
2035 fbs(8, payload[i], 1, i);
2036
2037 return 0;
2038 }
2039
2040 static int FUNC(metadata_obu)(CodedBitstreamContext *ctx, RWContext *rw,
2041 AV1RawMetadata *current)
2042 {
2043 int err;
2044
2045 leb128(metadata_type);
2046
2047 switch (current->metadata_type) {
2048 case AV1_METADATA_TYPE_HDR_CLL:
2049 CHECK(FUNC(metadata_hdr_cll)(ctx, rw, &current->metadata.hdr_cll));
2050 break;
2051 case AV1_METADATA_TYPE_HDR_MDCV:
2052 CHECK(FUNC(metadata_hdr_mdcv)(ctx, rw, &current->metadata.hdr_mdcv));
2053 break;
2054 case AV1_METADATA_TYPE_SCALABILITY:
2055 CHECK(FUNC(metadata_scalability)(ctx, rw, &current->metadata.scalability));
2056 break;
2057 case AV1_METADATA_TYPE_ITUT_T35:
2058 CHECK(FUNC(metadata_itut_t35)(ctx, rw, &current->metadata.itut_t35));
2059 break;
2060 case AV1_METADATA_TYPE_TIMECODE:
2061 CHECK(FUNC(metadata_timecode)(ctx, rw, &current->metadata.timecode));
2062 break;
2063 default:
2064 CHECK(FUNC(metadata_unknown)(ctx, rw, &current->metadata.unknown));
2065 }
2066
2067 return 0;
2068 }
2069
2070 static int FUNC(padding_obu)(CodedBitstreamContext *ctx, RWContext *rw,
2071 AV1RawPadding *current)
2072 {
2073 int i, err;
2074
2075 HEADER("Padding");
2076
2077 #ifdef READ
2078 // The payload runs up to the start of the trailing bits, but there might
2079 // be arbitrarily many trailing zeroes so we need to read through twice.
2080 current->payload_size = cbs_av1_get_payload_bytes_left(rw);
2081
2082 current->payload_ref = av_buffer_alloc(current->payload_size);
2083 if (!current->payload_ref)
2084 return AVERROR(ENOMEM);
2085 current->payload = current->payload_ref->data;
2086 #endif
2087
2088 for (i = 0; i < current->payload_size; i++)
2089 xf(8, obu_padding_byte[i], current->payload[i], 0x00, 0xff, 1, i);
2090
2091 return 0;
2092 }