2 * This file is part of FFmpeg.
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.
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.
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
19 static int FUNC(obu_header)(CodedBitstreamContext *ctx, RWContext *rw,
20 AV1RawOBUHeader *current)
23 av_unused int zero = 0;
27 fc(1, obu_forbidden_bit, 0, 0);
29 fc(4, obu_type, 0, AV1_OBU_PADDING);
30 flag(obu_extension_flag);
31 flag(obu_has_size_field);
33 fc(1, obu_reserved_1bit, 0, 0);
35 if (current->obu_extension_flag) {
38 fc(3, extension_header_reserved_3bits, 0, 0);
44 static int FUNC(trailing_bits)(CodedBitstreamContext *ctx, RWContext *rw, int nb_bits)
48 av_assert0(nb_bits > 0);
50 fixed(1, trailing_one_bit, 1);
54 fixed(1, trailing_zero_bit, 0);
61 static int FUNC(byte_alignment)(CodedBitstreamContext *ctx, RWContext *rw)
65 while (byte_alignment(rw) != 0)
66 fixed(1, zero_bit, 0);
71 static int FUNC(color_config)(CodedBitstreamContext *ctx, RWContext *rw,
72 AV1RawColorConfig *current, int seq_profile)
74 CodedBitstreamAV1Context *priv = ctx->priv_data;
79 if (seq_profile == FF_PROFILE_AV1_PROFESSIONAL &&
80 current->high_bitdepth) {
82 priv->bit_depth = current->twelve_bit ? 12 : 10;
84 priv->bit_depth = current->high_bitdepth ? 10 : 8;
87 if (seq_profile == FF_PROFILE_AV1_HIGH)
88 infer(mono_chrome, 0);
91 priv->num_planes = current->mono_chrome ? 1 : 3;
93 flag(color_description_present_flag);
94 if (current->color_description_present_flag) {
95 fb(8, color_primaries);
96 fb(8, transfer_characteristics);
97 fb(8, matrix_coefficients);
99 infer(color_primaries, AVCOL_PRI_UNSPECIFIED);
100 infer(transfer_characteristics, AVCOL_TRC_UNSPECIFIED);
101 infer(matrix_coefficients, AVCOL_SPC_UNSPECIFIED);
104 if (current->mono_chrome) {
107 infer(subsampling_x, 1);
108 infer(subsampling_y, 1);
109 infer(chroma_sample_position, AV1_CSP_UNKNOWN);
110 infer(separate_uv_delta_q, 0);
112 } else if (current->color_primaries == AVCOL_PRI_BT709 &&
113 current->transfer_characteristics == AVCOL_TRC_IEC61966_2_1 &&
114 current->matrix_coefficients == AVCOL_SPC_RGB) {
115 infer(color_range, 1);
116 infer(subsampling_x, 0);
117 infer(subsampling_y, 0);
118 flag(separate_uv_delta_q);
123 if (seq_profile == FF_PROFILE_AV1_MAIN) {
124 infer(subsampling_x, 1);
125 infer(subsampling_y, 1);
126 } else if (seq_profile == FF_PROFILE_AV1_HIGH) {
127 infer(subsampling_x, 0);
128 infer(subsampling_y, 0);
130 if (priv->bit_depth == 12) {
131 fb(1, subsampling_x);
132 if (current->subsampling_x)
133 fb(1, subsampling_y);
135 infer(subsampling_y, 0);
137 infer(subsampling_x, 1);
138 infer(subsampling_y, 0);
141 if (current->subsampling_x && current->subsampling_y) {
142 fc(2, chroma_sample_position, AV1_CSP_UNKNOWN,
146 flag(separate_uv_delta_q);
152 static int FUNC(timing_info)(CodedBitstreamContext *ctx, RWContext *rw,
153 AV1RawTimingInfo *current)
157 fc(32, num_units_in_display_tick, 1, MAX_UINT_BITS(32));
158 fc(32, time_scale, 1, MAX_UINT_BITS(32));
160 flag(equal_picture_interval);
161 if (current->equal_picture_interval)
162 uvlc(num_ticks_per_picture_minus_1, 0, MAX_UINT_BITS(32) - 1);
167 static int FUNC(decoder_model_info)(CodedBitstreamContext *ctx, RWContext *rw,
168 AV1RawDecoderModelInfo *current)
172 fb(5, buffer_delay_length_minus_1);
173 fb(32, num_units_in_decoding_tick);
174 fb(5, buffer_removal_time_length_minus_1);
175 fb(5, frame_presentation_time_length_minus_1);
180 static int FUNC(sequence_header_obu)(CodedBitstreamContext *ctx, RWContext *rw,
181 AV1RawSequenceHeader *current)
185 HEADER("Sequence Header");
187 fc(3, seq_profile, FF_PROFILE_AV1_MAIN,
188 FF_PROFILE_AV1_PROFESSIONAL);
190 flag(reduced_still_picture_header);
192 if (current->reduced_still_picture_header) {
193 infer(timing_info_present_flag, 0);
194 infer(decoder_model_info_present_flag, 0);
195 infer(initial_display_delay_present_flag, 0);
196 infer(operating_points_cnt_minus_1, 0);
197 infer(operating_point_idc[0], 0);
199 fb(5, seq_level_idx[0]);
201 infer(seq_tier[0], 0);
202 infer(decoder_model_present_for_this_op[0], 0);
203 infer(initial_display_delay_present_for_this_op[0], 0);
206 flag(timing_info_present_flag);
207 if (current->timing_info_present_flag) {
208 CHECK(FUNC(timing_info)(ctx, rw, ¤t->timing_info));
210 flag(decoder_model_info_present_flag);
211 if (current->decoder_model_info_present_flag) {
212 CHECK(FUNC(decoder_model_info)
213 (ctx, rw, ¤t->decoder_model_info));
216 infer(decoder_model_info_present_flag, 0);
219 flag(initial_display_delay_present_flag);
221 fb(5, operating_points_cnt_minus_1);
222 for (i = 0; i <= current->operating_points_cnt_minus_1; i++) {
223 fbs(12, operating_point_idc[i], 1, i);
224 fbs(5, seq_level_idx[i], 1, i);
226 if (current->seq_level_idx[i] > 7)
227 flags(seq_tier[i], 1, i);
229 infer(seq_tier[i], 0);
231 if (current->decoder_model_info_present_flag) {
232 flags(decoder_model_present_for_this_op[i], 1, i);
233 if (current->decoder_model_present_for_this_op[i]) {
234 int n = current->decoder_model_info.buffer_delay_length_minus_1 + 1;
235 fbs(n, decoder_buffer_delay[i], 1, i);
236 fbs(n, encoder_buffer_delay[i], 1, i);
237 flags(low_delay_mode_flag[i], 1, i);
240 infer(decoder_model_present_for_this_op[i], 0);
243 if (current->initial_display_delay_present_flag) {
244 flags(initial_display_delay_present_for_this_op[i], 1, i);
245 if (current->initial_display_delay_present_for_this_op[i])
246 fbs(4, initial_display_delay_minus_1[i], 1, i);
251 fb(4, frame_width_bits_minus_1);
252 fb(4, frame_height_bits_minus_1);
254 fb(current->frame_width_bits_minus_1 + 1, max_frame_width_minus_1);
255 fb(current->frame_height_bits_minus_1 + 1, max_frame_height_minus_1);
257 if (current->reduced_still_picture_header)
258 infer(frame_id_numbers_present_flag, 0);
260 flag(frame_id_numbers_present_flag);
261 if (current->frame_id_numbers_present_flag) {
262 fb(4, delta_frame_id_length_minus_2);
263 fb(3, additional_frame_id_length_minus_1);
266 flag(use_128x128_superblock);
267 flag(enable_filter_intra);
268 flag(enable_intra_edge_filter);
270 if (current->reduced_still_picture_header) {
271 infer(enable_intraintra_compound, 0);
272 infer(enable_masked_compound, 0);
273 infer(enable_warped_motion, 0);
274 infer(enable_dual_filter, 0);
275 infer(enable_order_hint, 0);
276 infer(enable_jnt_comp, 0);
277 infer(enable_ref_frame_mvs, 0);
279 infer(seq_force_screen_content_tools,
280 AV1_SELECT_SCREEN_CONTENT_TOOLS);
281 infer(seq_force_integer_mv,
282 AV1_SELECT_INTEGER_MV);
284 flag(enable_intraintra_compound);
285 flag(enable_masked_compound);
286 flag(enable_warped_motion);
287 flag(enable_dual_filter);
289 flag(enable_order_hint);
290 if (current->enable_order_hint) {
291 flag(enable_jnt_comp);
292 flag(enable_ref_frame_mvs);
294 infer(enable_jnt_comp, 0);
295 infer(enable_ref_frame_mvs, 0);
298 flag(seq_choose_screen_content_tools);
299 if (current->seq_choose_screen_content_tools)
300 infer(seq_force_screen_content_tools,
301 AV1_SELECT_SCREEN_CONTENT_TOOLS);
303 fb(1, seq_force_screen_content_tools);
304 if (current->seq_force_screen_content_tools > 0) {
305 flag(seq_choose_integer_mv);
306 if (current->seq_choose_integer_mv)
307 infer(seq_force_integer_mv,
308 AV1_SELECT_INTEGER_MV);
310 fb(1, seq_force_integer_mv);
312 infer(seq_force_integer_mv, AV1_SELECT_INTEGER_MV);
315 if (current->enable_order_hint)
316 fb(3, order_hint_bits_minus_1);
319 flag(enable_superres);
321 flag(enable_restoration);
323 CHECK(FUNC(color_config)(ctx, rw, ¤t->color_config,
324 current->seq_profile));
326 flag(film_grain_params_present);
331 static int FUNC(temporal_delimiter_obu)(CodedBitstreamContext *ctx, RWContext *rw)
333 CodedBitstreamAV1Context *priv = ctx->priv_data;
335 HEADER("Temporal Delimiter");
337 priv->seen_frame_header = 0;
342 static int FUNC(superres_params)(CodedBitstreamContext *ctx, RWContext *rw,
343 AV1RawFrameHeader *current)
345 CodedBitstreamAV1Context *priv = ctx->priv_data;
346 const AV1RawSequenceHeader *seq = priv->sequence_header;
349 if (seq->enable_superres)
352 infer(use_superres, 0);
354 if (current->use_superres) {
356 denom = current->coded_denom + AV1_SUPERRES_DENOM_MIN;
358 denom = AV1_SUPERRES_NUM;
361 priv->upscaled_width = priv->frame_width;
362 priv->frame_width = (priv->upscaled_width * AV1_SUPERRES_NUM +
368 static int FUNC(frame_size)(CodedBitstreamContext *ctx, RWContext *rw,
369 AV1RawFrameHeader *current)
371 CodedBitstreamAV1Context *priv = ctx->priv_data;
372 const AV1RawSequenceHeader *seq = priv->sequence_header;
375 if (current->frame_size_override_flag) {
376 fb(seq->frame_width_bits_minus_1 + 1, frame_width_minus_1);
377 fb(seq->frame_height_bits_minus_1 + 1, frame_height_minus_1);
379 priv->frame_width = current->frame_width_minus_1 + 1;
380 priv->frame_height = current->frame_height_minus_1 + 1;
382 priv->frame_width = seq->max_frame_width_minus_1 + 1;
383 priv->frame_height = seq->max_frame_height_minus_1 + 1;
386 CHECK(FUNC(superres_params)(ctx, rw, current));
391 static int FUNC(render_size)(CodedBitstreamContext *ctx, RWContext *rw,
392 AV1RawFrameHeader *current)
394 CodedBitstreamAV1Context *priv = ctx->priv_data;
397 flag(render_and_frame_size_different);
399 if (current->render_and_frame_size_different) {
400 fb(16, render_width_minus_1);
401 fb(16, render_height_minus_1);
403 priv->render_width = current->render_width_minus_1 + 1;
404 priv->render_height = current->render_height_minus_1 + 1;
406 priv->render_width = priv->upscaled_width;
407 priv->render_height = priv->frame_height;
413 static int FUNC(frame_size_with_refs)(CodedBitstreamContext *ctx, RWContext *rw,
414 AV1RawFrameHeader *current)
416 CodedBitstreamAV1Context *priv = ctx->priv_data;
419 for (i = 0; i < AV1_REFS_PER_FRAME; i++) {
421 if (current->found_ref) {
422 AV1ReferenceFrameState *ref =
423 &priv->ref[current->ref_frame_idx[i]];
426 av_log(ctx->log_ctx, AV_LOG_ERROR,
427 "Missing reference frame needed for frame size "
428 "(ref = %d, ref_frame_idx = %d).\n",
429 i, current->ref_frame_idx[i]);
430 return AVERROR_INVALIDDATA;
433 priv->upscaled_width = ref->upscaled_width;
434 priv->frame_width = ref->frame_width;
435 priv->frame_height = ref->frame_height;
436 priv->render_width = ref->render_width;
437 priv->render_height = ref->render_height;
442 if (current->found_ref == 0) {
443 CHECK(FUNC(frame_size)(ctx, rw, current));
444 CHECK(FUNC(render_size)(ctx, rw, current));
446 CHECK(FUNC(superres_params)(ctx, rw, current));
452 static int FUNC(interpolation_filter)(CodedBitstreamContext *ctx, RWContext *rw,
453 AV1RawFrameHeader *current)
457 flag(is_filter_switchable);
458 if (current->is_filter_switchable)
459 infer(interpolation_filter,
460 AV1_INTERPOLATION_FILTER_SWITCHABLE);
462 fb(2, interpolation_filter);
467 static int FUNC(tile_info)(CodedBitstreamContext *ctx, RWContext *rw,
468 AV1RawFrameHeader *current)
470 CodedBitstreamAV1Context *priv = ctx->priv_data;
471 const AV1RawSequenceHeader *seq = priv->sequence_header;
472 int mi_cols, mi_rows, sb_cols, sb_rows, sb_shift, sb_size;
473 int max_tile_width_sb, max_tile_height_sb, max_tile_area_sb;
474 int min_log2_tile_cols, max_log2_tile_cols, max_log2_tile_rows;
475 int min_log2_tiles, min_log2_tile_rows;
478 mi_cols = 2 * ((priv->frame_width + 7) >> 3);
479 mi_rows = 2 * ((priv->frame_height + 7) >> 3);
481 sb_cols = seq->use_128x128_superblock ? ((mi_cols + 31) >> 5)
482 : ((mi_cols + 15) >> 4);
483 sb_rows = seq->use_128x128_superblock ? ((mi_rows + 31) >> 5)
484 : ((mi_rows + 15) >> 4);
486 sb_shift = seq->use_128x128_superblock ? 5 : 4;
487 sb_size = sb_shift + 2;
489 max_tile_width_sb = AV1_MAX_TILE_WIDTH >> sb_size;
490 max_tile_area_sb = AV1_MAX_TILE_AREA >> (2 * sb_size);
492 min_log2_tile_cols = cbs_av1_tile_log2(max_tile_width_sb, sb_cols);
493 max_log2_tile_cols = cbs_av1_tile_log2(1, FFMIN(sb_cols, AV1_MAX_TILE_COLS));
494 max_log2_tile_rows = cbs_av1_tile_log2(1, FFMIN(sb_rows, AV1_MAX_TILE_ROWS));
495 min_log2_tiles = FFMAX(min_log2_tile_cols,
496 cbs_av1_tile_log2(max_tile_area_sb, sb_rows * sb_cols));
498 flag(uniform_tile_spacing_flag);
500 if (current->uniform_tile_spacing_flag) {
501 int tile_width_sb, tile_height_sb;
503 increment(tile_cols_log2, min_log2_tile_cols, max_log2_tile_cols);
505 tile_width_sb = (sb_cols + (1 << current->tile_cols_log2) - 1) >>
506 current->tile_cols_log2;
507 current->tile_cols = (sb_cols + tile_width_sb - 1) / tile_width_sb;
509 min_log2_tile_rows = FFMAX(min_log2_tiles - current->tile_cols_log2, 0);
511 increment(tile_rows_log2, min_log2_tile_rows, max_log2_tile_rows);
513 tile_height_sb = (sb_rows + (1 << current->tile_rows_log2) - 1) >>
514 current->tile_rows_log2;
515 current->tile_rows = (sb_rows + tile_height_sb - 1) / tile_height_sb;
518 int widest_tile_sb, start_sb, size_sb, max_width, max_height;
523 for (i = 0; start_sb < sb_cols && i < AV1_MAX_TILE_COLS; i++) {
524 max_width = FFMIN(sb_cols - start_sb, max_tile_width_sb);
525 ns(max_width, width_in_sbs_minus_1[i], 1, i);
526 size_sb = current->width_in_sbs_minus_1[i] + 1;
527 widest_tile_sb = FFMAX(size_sb, widest_tile_sb);
530 current->tile_cols_log2 = cbs_av1_tile_log2(1, i);
531 current->tile_cols = i;
533 if (min_log2_tiles > 0)
534 max_tile_area_sb = (sb_rows * sb_cols) >> (min_log2_tiles + 1);
536 max_tile_area_sb = sb_rows * sb_cols;
537 max_tile_height_sb = FFMAX(max_tile_area_sb / widest_tile_sb, 1);
540 for (i = 0; start_sb < sb_rows && i < AV1_MAX_TILE_ROWS; i++) {
541 max_height = FFMIN(sb_rows - start_sb, max_tile_height_sb);
542 ns(max_height, height_in_sbs_minus_1[i], 1, i);
543 size_sb = current->height_in_sbs_minus_1[i] + 1;
546 current->tile_rows_log2 = cbs_av1_tile_log2(1, i);
547 current->tile_rows = i;
550 if (current->tile_cols_log2 > 0 ||
551 current->tile_rows_log2 > 0) {
552 fb(current->tile_cols_log2 + current->tile_rows_log2,
553 context_update_tile_id);
554 fb(2, tile_size_bytes_minus1);
556 infer(context_update_tile_id, 0);
559 priv->tile_cols = current->tile_cols;
560 priv->tile_rows = current->tile_rows;
565 static int FUNC(quantization_params)(CodedBitstreamContext *ctx, RWContext *rw,
566 AV1RawFrameHeader *current)
568 CodedBitstreamAV1Context *priv = ctx->priv_data;
569 const AV1RawSequenceHeader *seq = priv->sequence_header;
574 delta_q(delta_q_y_dc);
576 if (priv->num_planes > 1) {
577 if (seq->color_config.separate_uv_delta_q)
580 infer(diff_uv_delta, 0);
582 delta_q(delta_q_u_dc);
583 delta_q(delta_q_u_ac);
585 if (current->diff_uv_delta) {
586 delta_q(delta_q_v_dc);
587 delta_q(delta_q_v_ac);
589 infer(delta_q_v_dc, current->delta_q_u_dc);
590 infer(delta_q_v_ac, current->delta_q_u_ac);
593 infer(delta_q_u_dc, 0);
594 infer(delta_q_u_ac, 0);
595 infer(delta_q_v_dc, 0);
596 infer(delta_q_v_ac, 0);
600 if (current->using_qmatrix) {
603 if (seq->color_config.separate_uv_delta_q)
606 infer(qm_v, current->qm_u);
612 static int FUNC(segmentation_params)(CodedBitstreamContext *ctx, RWContext *rw,
613 AV1RawFrameHeader *current)
615 static const uint8_t bits[AV1_SEG_LVL_MAX] = { 8, 6, 6, 6, 6, 3, 0, 0 };
616 static const uint8_t sign[AV1_SEG_LVL_MAX] = { 1, 1, 1, 1, 1, 0, 0, 0 };
619 flag(segmentation_enabled);
621 if (current->segmentation_enabled) {
622 if (current->primary_ref_frame == AV1_PRIMARY_REF_NONE) {
623 infer(segmentation_update_map, 1);
624 infer(segmentation_temporal_update, 0);
625 infer(segmentation_update_data, 1);
627 flag(segmentation_update_map);
628 if (current->segmentation_update_map)
629 flag(segmentation_temporal_update);
631 infer(segmentation_temporal_update, 0);
632 flag(segmentation_update_data);
635 if (current->segmentation_update_data) {
636 for (i = 0; i < AV1_MAX_SEGMENTS; i++) {
637 for (j = 0; j < AV1_SEG_LVL_MAX; j++) {
638 flags(feature_enabled[i][j], 2, i, j);
640 if (current->feature_enabled[i][j] && bits[j] > 0) {
642 sus(1 + bits[j], feature_value[i][j], 2, i, j);
644 fbs(bits[j], feature_value[i][j], 2, i, j);
646 infer(feature_value[i][j], 0);
652 for (i = 0; i < AV1_MAX_SEGMENTS; i++) {
653 for (j = 0; j < AV1_SEG_LVL_MAX; j++) {
654 infer(feature_enabled[i][j], 0);
655 infer(feature_value[i][j], 0);
663 static int FUNC(delta_q_params)(CodedBitstreamContext *ctx, RWContext *rw,
664 AV1RawFrameHeader *current)
668 if (current->base_q_idx > 0)
669 flag(delta_q_present);
671 infer(delta_q_present, 0);
673 if (current->delta_q_present)
679 static int FUNC(delta_lf_params)(CodedBitstreamContext *ctx, RWContext *rw,
680 AV1RawFrameHeader *current)
684 if (current->delta_q_present) {
685 if (!current->allow_intrabc)
686 flag(delta_lf_present);
688 infer(delta_lf_present, 0);
689 if (current->delta_lf_present) {
691 flag(delta_lf_multi);
693 infer(delta_lf_res, 0);
694 infer(delta_lf_multi, 0);
697 infer(delta_lf_present, 0);
698 infer(delta_lf_res, 0);
699 infer(delta_lf_multi, 0);
705 static int FUNC(loop_filter_params)(CodedBitstreamContext *ctx, RWContext *rw,
706 AV1RawFrameHeader *current)
708 CodedBitstreamAV1Context *priv = ctx->priv_data;
711 if (priv->coded_lossless || current->allow_intrabc) {
712 infer(loop_filter_level[0], 0);
713 infer(loop_filter_level[1], 0);
714 infer(loop_filter_ref_deltas[AV1_REF_FRAME_INTRA], 1);
715 infer(loop_filter_ref_deltas[AV1_REF_FRAME_LAST], 0);
716 infer(loop_filter_ref_deltas[AV1_REF_FRAME_LAST2], 0);
717 infer(loop_filter_ref_deltas[AV1_REF_FRAME_LAST3], 0);
718 infer(loop_filter_ref_deltas[AV1_REF_FRAME_BWDREF], 0);
719 infer(loop_filter_ref_deltas[AV1_REF_FRAME_GOLDEN], -1);
720 infer(loop_filter_ref_deltas[AV1_REF_FRAME_ALTREF], -1);
721 infer(loop_filter_ref_deltas[AV1_REF_FRAME_ALTREF2], -1);
722 for (i = 0; i < 2; i++)
723 infer(loop_filter_mode_deltas[i], 0);
727 fb(6, loop_filter_level[0]);
728 fb(6, loop_filter_level[1]);
730 if (priv->num_planes > 1) {
731 if (current->loop_filter_level[0] ||
732 current->loop_filter_level[1]) {
733 fb(6, loop_filter_level[2]);
734 fb(6, loop_filter_level[3]);
738 fb(3, loop_filter_sharpness);
740 flag(loop_filter_delta_enabled);
741 if (current->loop_filter_delta_enabled) {
742 flag(loop_filter_delta_update);
743 if (current->loop_filter_delta_update) {
744 for (i = 0; i < AV1_TOTAL_REFS_PER_FRAME; i++) {
745 flags(update_ref_delta[i], 1, i);
746 if (current->update_ref_delta[i])
747 sus(1 + 6, loop_filter_ref_deltas[i], 1, i);
749 for (i = 0; i < 2; i++) {
750 flags(update_mode_delta[i], 1, i);
751 if (current->update_mode_delta[i])
752 sus(1 + 6, loop_filter_mode_deltas[i], 1, i);
760 static int FUNC(cdef_params)(CodedBitstreamContext *ctx, RWContext *rw,
761 AV1RawFrameHeader *current)
763 CodedBitstreamAV1Context *priv = ctx->priv_data;
764 const AV1RawSequenceHeader *seq = priv->sequence_header;
767 if (priv->coded_lossless || current->allow_intrabc ||
769 infer(cdef_damping_minus_3, 0);
771 infer(cdef_y_pri_strength[0], 0);
772 infer(cdef_y_sec_strength[0], 0);
773 infer(cdef_uv_pri_strength[0], 0);
774 infer(cdef_uv_sec_strength[0], 0);
779 fb(2, cdef_damping_minus_3);
782 for (i = 0; i < (1 << current->cdef_bits); i++) {
783 fbs(4, cdef_y_pri_strength[i], 1, i);
784 fbs(2, cdef_y_sec_strength[i], 1, i);
786 if (priv->num_planes > 1) {
787 fbs(4, cdef_uv_pri_strength[i], 1, i);
788 fbs(2, cdef_uv_sec_strength[i], 1, i);
795 static int FUNC(lr_params)(CodedBitstreamContext *ctx, RWContext *rw,
796 AV1RawFrameHeader *current)
798 CodedBitstreamAV1Context *priv = ctx->priv_data;
799 const AV1RawSequenceHeader *seq = priv->sequence_header;
800 int uses_lr, uses_chroma_lr;
803 if (priv->all_lossless || current->allow_intrabc ||
804 !seq->enable_restoration) {
808 uses_lr = uses_chroma_lr = 0;
809 for (i = 0; i < priv->num_planes; i++) {
810 fbs(2, lr_type[i], 1, i);
812 if (current->lr_type[i] != 0) {
820 if (seq->use_128x128_superblock)
821 increment(lr_unit_shift, 1, 2);
823 increment(lr_unit_shift, 0, 2);
825 if(seq->color_config.subsampling_x &&
826 seq->color_config.subsampling_y && uses_chroma_lr) {
829 infer(lr_uv_shift, 0);
836 static int FUNC(read_tx_mode)(CodedBitstreamContext *ctx, RWContext *rw,
837 AV1RawFrameHeader *current)
839 CodedBitstreamAV1Context *priv = ctx->priv_data;
842 if (priv->coded_lossless)
845 increment(tx_mode, 1, 2);
850 static int FUNC(frame_reference_mode)(CodedBitstreamContext *ctx, RWContext *rw,
851 AV1RawFrameHeader *current)
855 if (current->frame_type == AV1_FRAME_INTRA_ONLY ||
856 current->frame_type == AV1_FRAME_KEY)
857 infer(reference_select, 0);
859 flag(reference_select);
864 static int FUNC(skip_mode_params)(CodedBitstreamContext *ctx, RWContext *rw,
865 AV1RawFrameHeader *current)
867 CodedBitstreamAV1Context *priv = ctx->priv_data;
868 const AV1RawSequenceHeader *seq = priv->sequence_header;
869 int skip_mode_allowed;
872 if (current->frame_type == AV1_FRAME_KEY ||
873 current->frame_type == AV1_FRAME_INTRA_ONLY ||
874 !current->reference_select || !seq->enable_order_hint) {
875 skip_mode_allowed = 0;
877 int forward_idx, backward_idx;
878 int forward_hint, backward_hint;
879 int ref_hint, dist, i;
883 for (i = 0; i < AV1_REFS_PER_FRAME; i++) {
884 ref_hint = priv->ref[i].order_hint;
885 dist = cbs_av1_get_relative_dist(seq, ref_hint,
886 current->order_hint);
888 if (forward_idx < 0 ||
889 cbs_av1_get_relative_dist(seq, ref_hint,
892 forward_hint = ref_hint;
894 } else if (dist > 0) {
895 if (backward_idx < 0 ||
896 cbs_av1_get_relative_dist(seq, ref_hint,
897 backward_hint) < 0) {
899 backward_hint = ref_hint;
904 if (forward_idx < 0) {
905 skip_mode_allowed = 0;
906 } else if (backward_idx >= 0) {
907 skip_mode_allowed = 1;
908 // Frames for skip mode are forward_idx and backward_idx.
910 int second_forward_idx;
911 int second_forward_hint;
913 second_forward_idx = -1;
914 for (i = 0; i < AV1_REFS_PER_FRAME; i++) {
915 ref_hint = priv->ref[i].order_hint;
916 if (cbs_av1_get_relative_dist(seq, ref_hint,
918 if (second_forward_idx < 0 ||
919 cbs_av1_get_relative_dist(seq, ref_hint,
920 second_forward_hint) > 0) {
921 second_forward_idx = i;
922 second_forward_hint = ref_hint;
927 if (second_forward_idx < 0) {
928 skip_mode_allowed = 0;
930 skip_mode_allowed = 1;
931 // Frames for skip mode are forward_idx and second_forward_idx.
936 if (skip_mode_allowed)
937 flag(skip_mode_present);
939 infer(skip_mode_present, 0);
944 static int FUNC(global_motion_param)(CodedBitstreamContext *ctx, RWContext *rw,
945 AV1RawFrameHeader *current,
946 int type, int ref, int idx)
948 uint32_t abs_bits, prec_bits, num_syms;
952 if (type == AV1_WARP_MODEL_TRANSLATION) {
953 abs_bits = AV1_GM_ABS_TRANS_ONLY_BITS - !current->allow_high_precision_mv;
954 prec_bits = AV1_GM_TRANS_ONLY_PREC_BITS - !current->allow_high_precision_mv;
956 abs_bits = AV1_GM_ABS_TRANS_BITS;
957 prec_bits = AV1_GM_TRANS_PREC_BITS;
960 abs_bits = AV1_GM_ABS_ALPHA_BITS;
961 prec_bits = AV1_GM_ALPHA_PREC_BITS;
964 num_syms = 2 * (1 << abs_bits) + 1;
965 subexp(gm_params[ref][idx], num_syms, 2, ref, idx);
967 // Actual gm_params value is not reconstructed here.
973 static int FUNC(global_motion_params)(CodedBitstreamContext *ctx, RWContext *rw,
974 AV1RawFrameHeader *current)
979 if (current->frame_type == AV1_FRAME_KEY ||
980 current->frame_type == AV1_FRAME_INTRA_ONLY)
983 for (ref = AV1_REF_FRAME_LAST; ref <= AV1_REF_FRAME_ALTREF; ref++) {
984 flags(is_global[ref], 1, ref);
985 if (current->is_global[ref]) {
986 flags(is_rot_zoom[ref], 1, ref);
987 if (current->is_rot_zoom[ref]) {
988 type = AV1_WARP_MODEL_ROTZOOM;
990 flags(is_translation[ref], 1, ref);
991 type = current->is_translation[ref] ? AV1_WARP_MODEL_TRANSLATION
992 : AV1_WARP_MODEL_AFFINE;
995 type = AV1_WARP_MODEL_IDENTITY;
998 if (type >= AV1_WARP_MODEL_ROTZOOM) {
999 CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 2));
1000 CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 3));
1001 if (type == AV1_WARP_MODEL_AFFINE) {
1002 CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 4));
1003 CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 5));
1005 // gm_params[ref][4] = -gm_params[ref][3]
1006 // gm_params[ref][5] = gm_params[ref][2]
1009 if (type >= AV1_WARP_MODEL_TRANSLATION) {
1010 CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 0));
1011 CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 1));
1018 static int FUNC(film_grain_params)(CodedBitstreamContext *ctx, RWContext *rw,
1019 AV1RawFrameHeader *current)
1021 CodedBitstreamAV1Context *priv = ctx->priv_data;
1022 const AV1RawSequenceHeader *seq = priv->sequence_header;
1023 int num_pos_luma, num_pos_chroma;
1026 if (!seq->film_grain_params_present ||
1027 (!current->show_frame && !current->showable_frame))
1032 if (!current->apply_grain)
1037 if (current->frame_type == AV1_FRAME_INTER)
1040 infer(update_grain, 1);
1042 if (!current->update_grain) {
1043 fb(3, film_grain_params_ref_idx);
1047 fb(4, num_y_points);
1048 for (i = 0; i < current->num_y_points; i++) {
1049 fbs(8, point_y_value[i], 1, i);
1050 fbs(8, point_y_scaling[i], 1, i);
1053 if (seq->color_config.mono_chrome)
1054 infer(chroma_scaling_from_luma, 0);
1056 flag(chroma_scaling_from_luma);
1058 if (seq->color_config.mono_chrome ||
1059 current->chroma_scaling_from_luma ||
1060 (seq->color_config.subsampling_x == 1 &&
1061 seq->color_config.subsampling_y == 1 &&
1062 current->num_y_points == 0)) {
1063 infer(num_cb_points, 0);
1064 infer(num_cr_points, 0);
1066 fb(4, num_cb_points);
1067 for (i = 0; i < current->num_cb_points; i++) {
1068 fbs(8, point_cb_value[i], 1, i);
1069 fbs(8, point_cb_scaling[i], 1, i);
1071 fb(4, num_cr_points);
1072 for (i = 0; i < current->num_cr_points; i++) {
1073 fbs(8, point_cr_value[i], 1, i);
1074 fbs(8, point_cr_scaling[i], 1, i);
1078 fb(2, grain_scaling_minus_8);
1079 fb(2, ar_coeff_lag);
1080 num_pos_luma = 2 * current->ar_coeff_lag * (current->ar_coeff_lag + 1);
1081 if (current->num_y_points) {
1082 num_pos_chroma = num_pos_luma + 1;
1083 for (i = 0; i < num_pos_luma; i++)
1084 fbs(8, ar_coeffs_y_plus_128[i], 1, i);
1086 num_pos_chroma = num_pos_luma;
1088 if (current->chroma_scaling_from_luma || current->num_cb_points) {
1089 for (i = 0; i < num_pos_chroma; i++)
1090 fbs(8, ar_coeffs_cb_plus_128[i], 1, i);
1092 if (current->chroma_scaling_from_luma || current->num_cr_points) {
1093 for (i = 0; i < num_pos_chroma; i++)
1094 fbs(8, ar_coeffs_cr_plus_128[i], 1, i);
1096 fb(2, ar_coeff_shift_minus_6);
1097 fb(2, grain_scale_shift);
1098 if (current->num_cb_points) {
1100 fb(8, cb_luma_mult);
1103 if (current->num_cr_points) {
1105 fb(8, cr_luma_mult);
1110 flag(clip_to_restricted_range);
1115 static int FUNC(uncompressed_header)(CodedBitstreamContext *ctx, RWContext *rw,
1116 AV1RawFrameHeader *current)
1118 CodedBitstreamAV1Context *priv = ctx->priv_data;
1119 const AV1RawSequenceHeader *seq;
1120 int id_len, diff_len, all_frames, frame_is_intra, order_hint_bits;
1123 if (!priv->sequence_header) {
1124 av_log(ctx->log_ctx, AV_LOG_ERROR, "No sequence header available: "
1125 "unable to decode frame header.\n");
1126 return AVERROR_INVALIDDATA;
1128 seq = priv->sequence_header;
1130 id_len = seq->additional_frame_id_length_minus_1 +
1131 seq->delta_frame_id_length_minus_2 + 3;
1132 all_frames = (1 << AV1_NUM_REF_FRAMES) - 1;
1134 if (seq->reduced_still_picture_header) {
1135 infer(show_existing_frame, 0);
1136 infer(frame_type, AV1_FRAME_KEY);
1137 infer(show_frame, 1);
1138 infer(showable_frame, 0);
1142 flag(show_existing_frame);
1144 if (current->show_existing_frame) {
1145 AV1ReferenceFrameState *frame;
1147 fb(3, frame_to_show_map_idx);
1148 frame = &priv->ref[current->frame_to_show_map_idx];
1150 if (seq->decoder_model_info_present_flag &&
1151 !seq->timing_info.equal_picture_interval) {
1152 fb(seq->decoder_model_info.frame_presentation_time_length_minus_1 + 1,
1153 frame_presentation_time);
1156 if (seq->frame_id_numbers_present_flag)
1157 fb(id_len, display_frame_id);
1159 if (frame->frame_type == AV1_FRAME_KEY)
1160 infer(refresh_frame_flags, all_frames);
1162 infer(refresh_frame_flags, 0);
1168 frame_is_intra = (current->frame_type == AV1_FRAME_INTRA_ONLY ||
1169 current->frame_type == AV1_FRAME_KEY);
1172 if (current->show_frame &&
1173 seq->decoder_model_info_present_flag &&
1174 !seq->timing_info.equal_picture_interval) {
1175 fb(seq->decoder_model_info.frame_presentation_time_length_minus_1 + 1,
1176 frame_presentation_time);
1178 if (current->show_frame)
1179 infer(showable_frame, current->frame_type != AV1_FRAME_KEY);
1181 flag(showable_frame);
1183 if (current->frame_type == AV1_FRAME_SWITCH ||
1184 (current->frame_type == AV1_FRAME_KEY && current->show_frame))
1185 infer(error_resilient_mode, 1);
1187 flag(error_resilient_mode);
1190 if (current->frame_type == AV1_FRAME_KEY && current->show_frame) {
1191 for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
1192 priv->ref[i].valid = 0;
1193 priv->ref[i].order_hint = 0;
1197 flag(disable_cdf_update);
1199 if (seq->seq_force_screen_content_tools ==
1200 AV1_SELECT_SCREEN_CONTENT_TOOLS) {
1201 flag(allow_screen_content_tools);
1203 infer(allow_screen_content_tools,
1204 seq->seq_force_screen_content_tools);
1206 if (current->allow_screen_content_tools) {
1207 if (seq->seq_force_integer_mv == AV1_SELECT_INTEGER_MV)
1208 flag(force_integer_mv);
1210 infer(force_integer_mv, seq->seq_force_integer_mv);
1212 infer(force_integer_mv, 0);
1215 if (seq->frame_id_numbers_present_flag) {
1216 fb(id_len, current_frame_id);
1218 diff_len = seq->delta_frame_id_length_minus_2 + 2;
1219 for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
1220 if (current->current_frame_id > (1 << diff_len)) {
1221 if (priv->ref[i].frame_id > current->current_frame_id ||
1222 priv->ref[i].frame_id < (current->current_frame_id -
1224 priv->ref[i].valid = 0;
1226 if (priv->ref[i].frame_id > current->current_frame_id &&
1227 priv->ref[i].frame_id < ((1 << id_len) +
1228 current->current_frame_id -
1230 priv->ref[i].valid = 0;
1234 infer(current_frame_id, 0);
1237 if (current->frame_type == AV1_FRAME_SWITCH)
1238 infer(frame_size_override_flag, 1);
1239 else if(seq->reduced_still_picture_header)
1240 infer(frame_size_override_flag, 0);
1242 flag(frame_size_override_flag);
1245 seq->enable_order_hint ? seq->order_hint_bits_minus_1 + 1 : 0;
1246 if (order_hint_bits > 0)
1247 fb(order_hint_bits, order_hint);
1249 infer(order_hint, 0);
1251 if (frame_is_intra || current->error_resilient_mode)
1252 infer(primary_ref_frame, AV1_PRIMARY_REF_NONE);
1254 fb(3, primary_ref_frame);
1256 if (seq->decoder_model_info_present_flag) {
1257 flag(buffer_removal_time_present_flag);
1258 if (current->buffer_removal_time_present_flag) {
1259 for (i = 0; i <= seq->operating_points_cnt_minus_1; i++) {
1260 if (seq->decoder_model_present_for_this_op[i]) {
1261 int op_pt_idc = seq->operating_point_idc[i];
1262 int in_temporal_layer = (op_pt_idc >> priv->temporal_id ) & 1;
1263 int in_spatial_layer = (op_pt_idc >> (priv->spatial_id + 8)) & 1;
1264 if (seq->operating_point_idc[i] == 0 ||
1265 in_temporal_layer || in_spatial_layer) {
1266 fbs(seq->decoder_model_info.buffer_removal_time_length_minus_1 + 1,
1267 buffer_removal_time[i], 1, i);
1274 if (current->frame_type == AV1_FRAME_SWITCH ||
1275 (current->frame_type == AV1_FRAME_KEY && current->show_frame))
1276 infer(refresh_frame_flags, all_frames);
1278 fb(8, refresh_frame_flags);
1280 if (!frame_is_intra || current->refresh_frame_flags != all_frames) {
1281 if (current->error_resilient_mode && seq->enable_order_hint) {
1282 for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
1283 fbs(order_hint_bits, ref_order_hint[i], 1, i);
1284 if (current->ref_order_hint[i] != priv->ref[i].order_hint)
1285 priv->ref[i].valid = 0;
1290 if (current->frame_type == AV1_FRAME_KEY ||
1291 current->frame_type == AV1_FRAME_INTRA_ONLY) {
1292 CHECK(FUNC(frame_size)(ctx, rw, current));
1293 CHECK(FUNC(render_size)(ctx, rw, current));
1295 if (current->allow_screen_content_tools &&
1296 priv->upscaled_width == priv->frame_width)
1297 flag(allow_intrabc);
1299 infer(allow_intrabc, 0);
1302 if (!seq->enable_order_hint) {
1303 infer(frame_refs_short_signaling, 0);
1305 flag(frame_refs_short_signaling);
1306 if (current->frame_refs_short_signaling) {
1307 fb(3, last_frame_idx);
1308 fb(3, golden_frame_idx);
1310 for (i = 0; i < AV1_REFS_PER_FRAME; i++) {
1312 infer(ref_frame_idx[i], current->last_frame_idx);
1313 else if (i == AV1_REF_FRAME_GOLDEN -
1315 infer(ref_frame_idx[i], current->golden_frame_idx);
1317 infer(ref_frame_idx[i], -1);
1322 for (i = 0; i < AV1_REFS_PER_FRAME; i++) {
1323 if (!current->frame_refs_short_signaling)
1324 fbs(3, ref_frame_idx[i], 1, i);
1325 if (seq->frame_id_numbers_present_flag) {
1326 fb(seq->delta_frame_id_length_minus_2 + 2,
1327 delta_frame_id_minus1);
1331 if (current->frame_size_override_flag &&
1332 !current->error_resilient_mode) {
1333 CHECK(FUNC(frame_size_with_refs)(ctx, rw, current));
1335 CHECK(FUNC(frame_size)(ctx, rw, current));
1336 CHECK(FUNC(render_size)(ctx, rw, current));
1339 if (current->force_integer_mv)
1340 infer(allow_high_precision_mv, 0);
1342 flag(allow_high_precision_mv);
1344 CHECK(FUNC(interpolation_filter)(ctx, rw, current));
1346 flag(is_motion_mode_switchable);
1348 if (current->error_resilient_mode ||
1349 !seq->enable_ref_frame_mvs)
1350 infer(use_ref_frame_mvs, 0);
1352 flag(use_ref_frame_mvs);
1354 infer(allow_intrabc, 0);
1357 if (!frame_is_intra) {
1358 // Derive reference frame sign biases.
1361 if (seq->reduced_still_picture_header || current->disable_cdf_update)
1362 infer(disable_frame_end_update_cdf, 1);
1364 flag(disable_frame_end_update_cdf);
1366 if (current->primary_ref_frame == AV1_PRIMARY_REF_NONE) {
1367 // Init non-coeff CDFs.
1368 // Setup past independence.
1370 // Load CDF tables from previous frame.
1371 // Load params from previous frame.
1374 if (current->use_ref_frame_mvs) {
1375 // Perform motion field estimation process.
1378 CHECK(FUNC(tile_info)(ctx, rw, current));
1380 CHECK(FUNC(quantization_params)(ctx, rw, current));
1382 CHECK(FUNC(segmentation_params)(ctx, rw, current));
1384 CHECK(FUNC(delta_q_params)(ctx, rw, current));
1386 CHECK(FUNC(delta_lf_params)(ctx, rw, current));
1388 // Init coeff CDFs / load previous segments.
1390 priv->coded_lossless = 1;
1391 for (i = 0; i < AV1_MAX_SEGMENTS; i++) {
1393 if (current->feature_enabled[i][AV1_SEG_LVL_ALT_Q]) {
1394 qindex = (current->base_q_idx +
1395 current->feature_value[i][AV1_SEG_LVL_ALT_Q]);
1397 qindex = current->base_q_idx;
1399 qindex = av_clip_uintp2(qindex, 8);
1401 if (qindex || current->delta_q_y_dc ||
1402 current->delta_q_u_ac || current->delta_q_u_dc ||
1403 current->delta_q_v_ac || current->delta_q_v_dc) {
1404 priv->coded_lossless = 0;
1407 priv->all_lossless = priv->coded_lossless &&
1408 priv->frame_width == priv->upscaled_width;
1410 CHECK(FUNC(loop_filter_params)(ctx, rw, current));
1412 CHECK(FUNC(cdef_params)(ctx, rw, current));
1414 CHECK(FUNC(lr_params)(ctx, rw, current));
1416 CHECK(FUNC(read_tx_mode)(ctx, rw, current));
1418 CHECK(FUNC(frame_reference_mode)(ctx, rw, current));
1420 CHECK(FUNC(skip_mode_params)(ctx, rw, current));
1422 if (frame_is_intra || current->error_resilient_mode ||
1423 !seq->enable_warped_motion)
1424 infer(allow_warped_motion, 0);
1426 flag(allow_warped_motion);
1428 flag(reduced_tx_set);
1430 CHECK(FUNC(global_motion_params)(ctx, rw, current));
1432 CHECK(FUNC(film_grain_params)(ctx, rw, current));
1434 for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
1435 if (current->refresh_frame_flags & (1 << i)) {
1436 priv->ref[i] = (AV1ReferenceFrameState) {
1438 .frame_id = current->current_frame_id,
1439 .upscaled_width = priv->upscaled_width,
1440 .frame_width = priv->frame_width,
1441 .frame_height = priv->frame_height,
1442 .render_width = priv->render_width,
1443 .render_height = priv->render_height,
1444 .frame_type = current->frame_type,
1445 .subsampling_x = seq->color_config.subsampling_x,
1446 .subsampling_y = seq->color_config.subsampling_y,
1447 .bit_depth = priv->bit_depth,
1448 .order_hint = current->order_hint,
1453 av_log(ctx->log_ctx, AV_LOG_DEBUG, "Frame %d: size %dx%d "
1454 "upscaled %d render %dx%d subsample %dx%d "
1455 "bitdepth %d tiles %dx%d.\n", current->order_hint,
1456 priv->frame_width, priv->frame_height, priv->upscaled_width,
1457 priv->render_width, priv->render_height,
1458 seq->color_config.subsampling_x + 1,
1459 seq->color_config.subsampling_y + 1, priv->bit_depth,
1460 priv->tile_rows, priv->tile_cols);
1465 static int FUNC(frame_header_obu)(CodedBitstreamContext *ctx, RWContext *rw,
1466 AV1RawFrameHeader *current)
1468 CodedBitstreamAV1Context *priv = ctx->priv_data;
1471 HEADER("Frame Header");
1473 if (priv->seen_frame_header) {
1476 priv->seen_frame_header = 1;
1478 CHECK(FUNC(uncompressed_header)(ctx, rw, current));
1480 if (current->show_existing_frame) {
1481 priv->seen_frame_header = 0;
1483 priv->seen_frame_header = 1;
1490 static int FUNC(tile_group_obu)(CodedBitstreamContext *ctx, RWContext *rw,
1491 AV1RawTileGroup *current)
1493 CodedBitstreamAV1Context *priv = ctx->priv_data;
1494 int num_tiles, tile_bits;
1497 HEADER("Tile Group");
1499 num_tiles = priv->tile_cols * priv->tile_rows;
1501 flag(tile_start_and_end_present_flag);
1503 infer(tile_start_and_end_present_flag, 0);
1505 if (num_tiles == 1 || !current->tile_start_and_end_present_flag) {
1507 infer(tg_end, num_tiles - 1);
1509 tile_bits = cbs_av1_tile_log2(1, priv->tile_cols) +
1510 cbs_av1_tile_log2(1, priv->tile_rows);
1511 fb(tile_bits, tg_start);
1512 fb(tile_bits, tg_end);
1515 CHECK(FUNC(byte_alignment)(ctx, rw));
1517 // Reset header for next frame.
1518 if (current->tg_end == num_tiles - 1)
1519 priv->seen_frame_header = 0;
1521 // Tile data follows.
1526 static int FUNC(frame_obu)(CodedBitstreamContext *ctx, RWContext *rw,
1527 AV1RawFrame *current)
1531 CHECK(FUNC(frame_header_obu)(ctx, rw, ¤t->header));
1533 CHECK(FUNC(byte_alignment)(ctx, rw));
1535 CHECK(FUNC(tile_group_obu)(ctx, rw, ¤t->tile_group));
1540 static int FUNC(tile_list_obu)(CodedBitstreamContext *ctx, RWContext *rw,
1541 AV1RawTileList *current)
1545 fb(8, output_frame_width_in_tiles_minus_1);
1546 fb(8, output_frame_height_in_tiles_minus_1);
1548 fb(16, tile_count_minus_1);
1550 // Tile data follows.
1555 static int FUNC(metadata_hdr_cll)(CodedBitstreamContext *ctx, RWContext *rw,
1556 AV1RawMetadataHDRCLL *current)
1566 static int FUNC(metadata_hdr_mdcv)(CodedBitstreamContext *ctx, RWContext *rw,
1567 AV1RawMetadataHDRMDCV *current)
1571 for (i = 0; i < 3; i++) {
1572 fcs(16, primary_chromaticity_x[i], 0, 50000, 1, i);
1573 fcs(16, primary_chromaticity_y[i], 0, 50000, 1, i);
1576 fc(16, white_point_chromaticity_x, 0, 50000);
1577 fc(16, white_point_chromaticity_y, 0, 50000);
1579 fc(32, luminance_max, 1, MAX_UINT_BITS(32));
1580 fc(32, luminance_min, 0, current->luminance_max >> 6);
1585 static int FUNC(metadata_scalability)(CodedBitstreamContext *ctx, RWContext *rw,
1586 AV1RawMetadataScalability *current)
1588 // TODO: scalability metadata.
1590 return AVERROR_PATCHWELCOME;
1593 static int FUNC(metadata_itut_t35)(CodedBitstreamContext *ctx, RWContext *rw,
1594 AV1RawMetadataITUTT35 *current)
1599 fb(8, itu_t_t35_country_code);
1600 if (current->itu_t_t35_country_code == 0xff)
1601 fb(8, itu_t_t35_country_code_extension_byte);
1604 // The payload runs up to the start of the trailing bits, but there might
1605 // be arbitrarily many trailing zeroes so we need to read through twice.
1607 GetBitContext tmp = *rw;
1608 current->payload_size = 0;
1609 for (i = 0; get_bits_left(rw) >= 8; i++) {
1610 if (get_bits(rw, 8))
1611 current->payload_size = i;
1616 current->payload_ref = av_buffer_alloc(current->payload_size);
1617 if (!current->payload_ref)
1618 return AVERROR(ENOMEM);
1619 current->payload = current->payload_ref->data;
1622 for (i = 0; i < current->payload_size; i++)
1623 xf(8, itu_t_t35_payload_bytes[i], current->payload[i],
1629 static int FUNC(metadata_timecode)(CodedBitstreamContext *ctx, RWContext *rw,
1630 AV1RawMetadataTimecode *current)
1634 fb(5, counting_type);
1635 flag(full_timestamp_flag);
1636 flag(discontinuity_flag);
1637 flag(cnt_dropped_flag);
1640 if (current->full_timestamp_flag) {
1641 fb(6, seconds_value);
1642 fb(6, minutes_value);
1646 if (current->seconds_flag) {
1647 fb(6, seconds_value);
1649 if (current->minutes_flag) {
1650 fb(6, minutes_value);
1652 if (current->hours_flag)
1658 fb(5, time_offset_length);
1659 if (current->time_offset_length > 0)
1660 fb(current->time_offset_length, time_offset_value);
1665 static int FUNC(metadata_obu)(CodedBitstreamContext *ctx, RWContext *rw,
1666 AV1RawMetadata *current)
1670 leb128(metadata_type);
1672 switch (current->metadata_type) {
1673 case AV1_METADATA_TYPE_HDR_CLL:
1674 CHECK(FUNC(metadata_hdr_cll)(ctx, rw, ¤t->metadata.hdr_cll));
1676 case AV1_METADATA_TYPE_HDR_MDCV:
1677 CHECK(FUNC(metadata_hdr_mdcv)(ctx, rw, ¤t->metadata.hdr_mdcv));
1679 case AV1_METADATA_TYPE_SCALABILITY:
1680 CHECK(FUNC(metadata_scalability)(ctx, rw, ¤t->metadata.scalability));
1682 case AV1_METADATA_TYPE_ITUT_T35:
1683 CHECK(FUNC(metadata_itut_t35)(ctx, rw, ¤t->metadata.itut_t35));
1685 case AV1_METADATA_TYPE_TIMECODE:
1686 CHECK(FUNC(metadata_timecode)(ctx, rw, ¤t->metadata.timecode));
1689 // Unknown metadata type.
1690 return AVERROR_PATCHWELCOME;