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(rbsp_trailing_bits)(CodedBitstreamContext *ctx, RWContext *rw)
23 fixed(1, rbsp_stop_one_bit, 1);
24 while (byte_alignment(rw) != 0)
25 fixed(1, rbsp_alignment_zero_bit, 0);
30 static int FUNC(nal_unit_header)(CodedBitstreamContext *ctx, RWContext *rw,
31 H265RawNALUnitHeader *current,
32 int expected_nal_unit_type)
36 fixed(1, forbidden_zero_bit, 0);
38 if (expected_nal_unit_type >= 0)
39 u(6, nal_unit_type, expected_nal_unit_type,
40 expected_nal_unit_type);
44 u(6, nuh_layer_id, 0, 62);
45 u(3, nuh_temporal_id_plus1, 1, 7);
50 static int FUNC(byte_alignment)(CodedBitstreamContext *ctx, RWContext *rw)
54 fixed(1, alignment_bit_equal_to_one, 1);
55 while (byte_alignment(rw) != 0)
56 fixed(1, alignment_bit_equal_to_zero, 0);
61 static int FUNC(extension_data)(CodedBitstreamContext *ctx, RWContext *rw,
62 H265RawExtensionData *current)
70 for (k = 0; cbs_h2645_read_more_rbsp_data(rw); k++)
72 current->bit_length = k;
75 allocate(current->data, (current->bit_length + 7) / 8);
76 for (k = 0; k < current->bit_length; k++) {
77 xu(1, extension_data, bit, 0, 1, 0);
78 current->data[k / 8] |= bit << (7 - k % 8);
82 for (k = 0; k < current->bit_length; k++)
83 xu(1, extension_data, current->data[k / 8] >> (7 - k % 8) & 1, 0, 1, 0);
88 static int FUNC(profile_tier_level)(CodedBitstreamContext *ctx, RWContext *rw,
89 H265RawProfileTierLevel *current,
90 int profile_present_flag,
91 int max_num_sub_layers_minus1)
95 if (profile_present_flag) {
96 u(2, general_profile_space, 0, 0);
97 flag(general_tier_flag);
98 ub(5, general_profile_idc);
100 for (j = 0; j < 32; j++)
101 flags(general_profile_compatibility_flag[j], 1, j);
103 flag(general_progressive_source_flag);
104 flag(general_interlaced_source_flag);
105 flag(general_non_packed_constraint_flag);
106 flag(general_frame_only_constraint_flag);
108 #define profile_compatible(x) (current->general_profile_idc == (x) || \
109 current->general_profile_compatibility_flag[x])
110 if (profile_compatible(4) || profile_compatible(5) ||
111 profile_compatible(6) || profile_compatible(7) ||
112 profile_compatible(8) || profile_compatible(9) ||
113 profile_compatible(10)) {
114 flag(general_max_12bit_constraint_flag);
115 flag(general_max_10bit_constraint_flag);
116 flag(general_max_8bit_constraint_flag);
117 flag(general_max_422chroma_constraint_flag);
118 flag(general_max_420chroma_constraint_flag);
119 flag(general_max_monochrome_constraint_flag);
120 flag(general_intra_constraint_flag);
121 flag(general_one_picture_only_constraint_flag);
122 flag(general_lower_bit_rate_constraint_flag);
124 if (profile_compatible(5) || profile_compatible(9) ||
125 profile_compatible(10)) {
126 flag(general_max_14bit_constraint_flag);
127 fixed(24, general_reserved_zero_33bits, 0);
128 fixed( 9, general_reserved_zero_33bits, 0);
130 fixed(24, general_reserved_zero_34bits, 0);
131 fixed(10, general_reserved_zero_34bits, 0);
133 } else if (profile_compatible(2)) {
134 fixed(7, general_reserved_zero_7bits, 0);
135 flag(general_one_picture_only_constraint_flag);
136 fixed(24, general_reserved_zero_35bits, 0);
137 fixed(11, general_reserved_zero_35bits, 0);
139 fixed(24, general_reserved_zero_43bits, 0);
140 fixed(19, general_reserved_zero_43bits, 0);
143 if (profile_compatible(1) || profile_compatible(2) ||
144 profile_compatible(3) || profile_compatible(4) ||
145 profile_compatible(5) || profile_compatible(9)) {
146 flag(general_inbld_flag);
148 fixed(1, general_reserved_zero_bit, 0);
150 #undef profile_compatible
153 ub(8, general_level_idc);
155 for (i = 0; i < max_num_sub_layers_minus1; i++) {
156 flags(sub_layer_profile_present_flag[i], 1, i);
157 flags(sub_layer_level_present_flag[i], 1, i);
160 if (max_num_sub_layers_minus1 > 0) {
161 for (i = max_num_sub_layers_minus1; i < 8; i++)
162 fixed(2, reserved_zero_2bits, 0);
165 for (i = 0; i < max_num_sub_layers_minus1; i++) {
166 if (current->sub_layer_profile_present_flag[i]) {
167 us(2, sub_layer_profile_space[i], 0, 0, 1, i);
168 flags(sub_layer_tier_flag[i], 1, i);
169 ubs(5, sub_layer_profile_idc[i], 1, i);
171 for (j = 0; j < 32; j++)
172 flags(sub_layer_profile_compatibility_flag[i][j], 2, i, j);
174 flags(sub_layer_progressive_source_flag[i], 1, i);
175 flags(sub_layer_interlaced_source_flag[i], 1, i);
176 flags(sub_layer_non_packed_constraint_flag[i], 1, i);
177 flags(sub_layer_frame_only_constraint_flag[i], 1, i);
179 #define profile_compatible(x) (current->sub_layer_profile_idc[i] == (x) || \
180 current->sub_layer_profile_compatibility_flag[i][x])
181 if (profile_compatible(4) || profile_compatible(5) ||
182 profile_compatible(6) || profile_compatible(7) ||
183 profile_compatible(8) || profile_compatible(9) ||
184 profile_compatible(10)) {
185 flags(sub_layer_max_12bit_constraint_flag[i], 1, i);
186 flags(sub_layer_max_10bit_constraint_flag[i], 1, i);
187 flags(sub_layer_max_8bit_constraint_flag[i], 1, i);
188 flags(sub_layer_max_422chroma_constraint_flag[i], 1, i);
189 flags(sub_layer_max_420chroma_constraint_flag[i], 1, i);
190 flags(sub_layer_max_monochrome_constraint_flag[i], 1, i);
191 flags(sub_layer_intra_constraint_flag[i], 1, i);
192 flags(sub_layer_one_picture_only_constraint_flag[i], 1, i);
193 flags(sub_layer_lower_bit_rate_constraint_flag[i], 1, i);
195 if (profile_compatible(5)) {
196 flags(sub_layer_max_14bit_constraint_flag[i], 1, i);
197 fixed(24, sub_layer_reserved_zero_33bits, 0);
198 fixed( 9, sub_layer_reserved_zero_33bits, 0);
200 fixed(24, sub_layer_reserved_zero_34bits, 0);
201 fixed(10, sub_layer_reserved_zero_34bits, 0);
203 } else if (profile_compatible(2)) {
204 fixed(7, sub_layer_reserved_zero_7bits, 0);
205 flags(sub_layer_one_picture_only_constraint_flag[i], 1, i);
206 fixed(24, sub_layer_reserved_zero_43bits, 0);
207 fixed(11, sub_layer_reserved_zero_43bits, 0);
209 fixed(24, sub_layer_reserved_zero_43bits, 0);
210 fixed(19, sub_layer_reserved_zero_43bits, 0);
213 if (profile_compatible(1) || profile_compatible(2) ||
214 profile_compatible(3) || profile_compatible(4) ||
215 profile_compatible(5) || profile_compatible(9)) {
216 flags(sub_layer_inbld_flag[i], 1, i);
218 fixed(1, sub_layer_reserved_zero_bit, 0);
220 #undef profile_compatible
222 if (current->sub_layer_level_present_flag[i])
223 ubs(8, sub_layer_level_idc[i], 1, i);
229 static int FUNC(sub_layer_hrd_parameters)(CodedBitstreamContext *ctx, RWContext *rw,
230 H265RawHRDParameters *hrd,
231 int nal, int sub_layer_id)
233 H265RawSubLayerHRDParameters *current;
237 current = &hrd->nal_sub_layer_hrd_parameters[sub_layer_id];
239 current = &hrd->vcl_sub_layer_hrd_parameters[sub_layer_id];
241 for (i = 0; i <= hrd->cpb_cnt_minus1[sub_layer_id]; i++) {
242 ues(bit_rate_value_minus1[i], 0, UINT32_MAX - 1, 1, i);
243 ues(cpb_size_value_minus1[i], 0, UINT32_MAX - 1, 1, i);
244 if (hrd->sub_pic_hrd_params_present_flag) {
245 ues(cpb_size_du_value_minus1[i], 0, UINT32_MAX - 1, 1, i);
246 ues(bit_rate_du_value_minus1[i], 0, UINT32_MAX - 1, 1, i);
248 flags(cbr_flag[i], 1, i);
254 static int FUNC(hrd_parameters)(CodedBitstreamContext *ctx, RWContext *rw,
255 H265RawHRDParameters *current, int common_inf_present_flag,
256 int max_num_sub_layers_minus1)
260 if (common_inf_present_flag) {
261 flag(nal_hrd_parameters_present_flag);
262 flag(vcl_hrd_parameters_present_flag);
264 if (current->nal_hrd_parameters_present_flag ||
265 current->vcl_hrd_parameters_present_flag) {
266 flag(sub_pic_hrd_params_present_flag);
267 if (current->sub_pic_hrd_params_present_flag) {
268 ub(8, tick_divisor_minus2);
269 ub(5, du_cpb_removal_delay_increment_length_minus1);
270 flag(sub_pic_cpb_params_in_pic_timing_sei_flag);
271 ub(5, dpb_output_delay_du_length_minus1);
274 ub(4, bit_rate_scale);
275 ub(4, cpb_size_scale);
276 if (current->sub_pic_hrd_params_present_flag)
277 ub(4, cpb_size_du_scale);
279 ub(5, initial_cpb_removal_delay_length_minus1);
280 ub(5, au_cpb_removal_delay_length_minus1);
281 ub(5, dpb_output_delay_length_minus1);
283 infer(sub_pic_hrd_params_present_flag, 0);
285 infer(initial_cpb_removal_delay_length_minus1, 23);
286 infer(au_cpb_removal_delay_length_minus1, 23);
287 infer(dpb_output_delay_length_minus1, 23);
291 for (i = 0; i <= max_num_sub_layers_minus1; i++) {
292 flags(fixed_pic_rate_general_flag[i], 1, i);
294 if (!current->fixed_pic_rate_general_flag[i])
295 flags(fixed_pic_rate_within_cvs_flag[i], 1, i);
297 infer(fixed_pic_rate_within_cvs_flag[i], 1);
299 if (current->fixed_pic_rate_within_cvs_flag[i]) {
300 ues(elemental_duration_in_tc_minus1[i], 0, 2047, 1, i);
301 infer(low_delay_hrd_flag[i], 0);
303 flags(low_delay_hrd_flag[i], 1, i);
305 if (!current->low_delay_hrd_flag[i])
306 ues(cpb_cnt_minus1[i], 0, 31, 1, i);
308 infer(cpb_cnt_minus1[i], 0);
310 if (current->nal_hrd_parameters_present_flag)
311 CHECK(FUNC(sub_layer_hrd_parameters)(ctx, rw, current, 0, i));
312 if (current->vcl_hrd_parameters_present_flag)
313 CHECK(FUNC(sub_layer_hrd_parameters)(ctx, rw, current, 1, i));
319 static int FUNC(vui_parameters)(CodedBitstreamContext *ctx, RWContext *rw,
320 H265RawVUI *current, const H265RawSPS *sps)
324 flag(aspect_ratio_info_present_flag);
325 if (current->aspect_ratio_info_present_flag) {
326 ub(8, aspect_ratio_idc);
327 if (current->aspect_ratio_idc == 255) {
332 infer(aspect_ratio_idc, 0);
335 flag(overscan_info_present_flag);
336 if (current->overscan_info_present_flag)
337 flag(overscan_appropriate_flag);
339 flag(video_signal_type_present_flag);
340 if (current->video_signal_type_present_flag) {
342 flag(video_full_range_flag);
343 flag(colour_description_present_flag);
344 if (current->colour_description_present_flag) {
345 ub(8, colour_primaries);
346 ub(8, transfer_characteristics);
347 ub(8, matrix_coefficients);
349 infer(colour_primaries, 2);
350 infer(transfer_characteristics, 2);
351 infer(matrix_coefficients, 2);
354 infer(video_format, 5);
355 infer(video_full_range_flag, 0);
356 infer(colour_primaries, 2);
357 infer(transfer_characteristics, 2);
358 infer(matrix_coefficients, 2);
361 flag(chroma_loc_info_present_flag);
362 if (current->chroma_loc_info_present_flag) {
363 ue(chroma_sample_loc_type_top_field, 0, 5);
364 ue(chroma_sample_loc_type_bottom_field, 0, 5);
366 infer(chroma_sample_loc_type_top_field, 0);
367 infer(chroma_sample_loc_type_bottom_field, 0);
370 flag(neutral_chroma_indication_flag);
371 flag(field_seq_flag);
372 flag(frame_field_info_present_flag);
374 flag(default_display_window_flag);
375 if (current->default_display_window_flag) {
376 ue(def_disp_win_left_offset, 0, 16384);
377 ue(def_disp_win_right_offset, 0, 16384);
378 ue(def_disp_win_top_offset, 0, 16384);
379 ue(def_disp_win_bottom_offset, 0, 16384);
382 flag(vui_timing_info_present_flag);
383 if (current->vui_timing_info_present_flag) {
384 u(32, vui_num_units_in_tick, 1, UINT32_MAX);
385 u(32, vui_time_scale, 1, UINT32_MAX);
386 flag(vui_poc_proportional_to_timing_flag);
387 if (current->vui_poc_proportional_to_timing_flag)
388 ue(vui_num_ticks_poc_diff_one_minus1, 0, UINT32_MAX - 1);
390 flag(vui_hrd_parameters_present_flag);
391 if (current->vui_hrd_parameters_present_flag) {
392 CHECK(FUNC(hrd_parameters)(ctx, rw, ¤t->hrd_parameters,
393 1, sps->sps_max_sub_layers_minus1));
397 flag(bitstream_restriction_flag);
398 if (current->bitstream_restriction_flag) {
399 flag(tiles_fixed_structure_flag);
400 flag(motion_vectors_over_pic_boundaries_flag);
401 flag(restricted_ref_pic_lists_flag);
402 ue(min_spatial_segmentation_idc, 0, 4095);
403 ue(max_bytes_per_pic_denom, 0, 16);
404 ue(max_bits_per_min_cu_denom, 0, 16);
405 ue(log2_max_mv_length_horizontal, 0, 16);
406 ue(log2_max_mv_length_vertical, 0, 16);
408 infer(tiles_fixed_structure_flag, 0);
409 infer(motion_vectors_over_pic_boundaries_flag, 1);
410 infer(min_spatial_segmentation_idc, 0);
411 infer(max_bytes_per_pic_denom, 2);
412 infer(max_bits_per_min_cu_denom, 1);
413 infer(log2_max_mv_length_horizontal, 15);
414 infer(log2_max_mv_length_vertical, 15);
420 static int FUNC(vps)(CodedBitstreamContext *ctx, RWContext *rw,
425 HEADER("Video Parameter Set");
427 CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, HEVC_NAL_VPS));
429 ub(4, vps_video_parameter_set_id);
431 flag(vps_base_layer_internal_flag);
432 flag(vps_base_layer_available_flag);
433 u(6, vps_max_layers_minus1, 0, HEVC_MAX_LAYERS - 1);
434 u(3, vps_max_sub_layers_minus1, 0, HEVC_MAX_SUB_LAYERS - 1);
435 flag(vps_temporal_id_nesting_flag);
437 if (current->vps_max_sub_layers_minus1 == 0 &&
438 current->vps_temporal_id_nesting_flag != 1) {
439 av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid stream: "
440 "vps_temporal_id_nesting_flag must be 1 if "
441 "vps_max_sub_layers_minus1 is 0.\n");
442 return AVERROR_INVALIDDATA;
445 fixed(16, vps_reserved_0xffff_16bits, 0xffff);
447 CHECK(FUNC(profile_tier_level)(ctx, rw, ¤t->profile_tier_level,
448 1, current->vps_max_sub_layers_minus1));
450 flag(vps_sub_layer_ordering_info_present_flag);
451 for (i = (current->vps_sub_layer_ordering_info_present_flag ?
452 0 : current->vps_max_sub_layers_minus1);
453 i <= current->vps_max_sub_layers_minus1; i++) {
454 ues(vps_max_dec_pic_buffering_minus1[i],
455 0, HEVC_MAX_DPB_SIZE - 1, 1, i);
456 ues(vps_max_num_reorder_pics[i],
457 0, current->vps_max_dec_pic_buffering_minus1[i], 1, i);
458 ues(vps_max_latency_increase_plus1[i],
459 0, UINT32_MAX - 1, 1, i);
461 if (!current->vps_sub_layer_ordering_info_present_flag) {
462 for (i = 0; i < current->vps_max_sub_layers_minus1; i++) {
463 infer(vps_max_dec_pic_buffering_minus1[i],
464 current->vps_max_dec_pic_buffering_minus1[current->vps_max_sub_layers_minus1]);
465 infer(vps_max_num_reorder_pics[i],
466 current->vps_max_num_reorder_pics[current->vps_max_sub_layers_minus1]);
467 infer(vps_max_latency_increase_plus1[i],
468 current->vps_max_latency_increase_plus1[current->vps_max_sub_layers_minus1]);
472 u(6, vps_max_layer_id, 0, HEVC_MAX_LAYERS - 1);
473 ue(vps_num_layer_sets_minus1, 0, HEVC_MAX_LAYER_SETS - 1);
474 for (i = 1; i <= current->vps_num_layer_sets_minus1; i++) {
475 for (j = 0; j <= current->vps_max_layer_id; j++)
476 flags(layer_id_included_flag[i][j], 2, i, j);
478 for (j = 0; j <= current->vps_max_layer_id; j++)
479 infer(layer_id_included_flag[0][j], j == 0);
481 flag(vps_timing_info_present_flag);
482 if (current->vps_timing_info_present_flag) {
483 u(32, vps_num_units_in_tick, 1, UINT32_MAX);
484 u(32, vps_time_scale, 1, UINT32_MAX);
485 flag(vps_poc_proportional_to_timing_flag);
486 if (current->vps_poc_proportional_to_timing_flag)
487 ue(vps_num_ticks_poc_diff_one_minus1, 0, UINT32_MAX - 1);
488 ue(vps_num_hrd_parameters, 0, current->vps_num_layer_sets_minus1 + 1);
489 for (i = 0; i < current->vps_num_hrd_parameters; i++) {
490 ues(hrd_layer_set_idx[i],
491 current->vps_base_layer_internal_flag ? 0 : 1,
492 current->vps_num_layer_sets_minus1, 1, i);
494 flags(cprms_present_flag[i], 1, i);
496 infer(cprms_present_flag[0], 1);
498 CHECK(FUNC(hrd_parameters)(ctx, rw, ¤t->hrd_parameters[i],
499 current->cprms_present_flag[i],
500 current->vps_max_sub_layers_minus1));
504 flag(vps_extension_flag);
505 if (current->vps_extension_flag)
506 CHECK(FUNC(extension_data)(ctx, rw, ¤t->extension_data));
508 CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
513 static int FUNC(st_ref_pic_set)(CodedBitstreamContext *ctx, RWContext *rw,
514 H265RawSTRefPicSet *current, int st_rps_idx,
515 const H265RawSPS *sps)
520 flag(inter_ref_pic_set_prediction_flag);
522 infer(inter_ref_pic_set_prediction_flag, 0);
524 if (current->inter_ref_pic_set_prediction_flag) {
525 unsigned int ref_rps_idx, num_delta_pocs, num_ref_pics;
526 const H265RawSTRefPicSet *ref;
527 int delta_rps, d_poc;
528 int ref_delta_poc_s0[HEVC_MAX_REFS], ref_delta_poc_s1[HEVC_MAX_REFS];
529 int delta_poc_s0[HEVC_MAX_REFS], delta_poc_s1[HEVC_MAX_REFS];
530 uint8_t used_by_curr_pic_s0[HEVC_MAX_REFS],
531 used_by_curr_pic_s1[HEVC_MAX_REFS];
533 if (st_rps_idx == sps->num_short_term_ref_pic_sets)
534 ue(delta_idx_minus1, 0, st_rps_idx - 1);
536 infer(delta_idx_minus1, 0);
538 ref_rps_idx = st_rps_idx - (current->delta_idx_minus1 + 1);
539 ref = &sps->st_ref_pic_set[ref_rps_idx];
540 num_delta_pocs = ref->num_negative_pics + ref->num_positive_pics;
541 av_assert0(num_delta_pocs < HEVC_MAX_DPB_SIZE);
543 flag(delta_rps_sign);
544 ue(abs_delta_rps_minus1, 0, INT16_MAX);
545 delta_rps = (1 - 2 * current->delta_rps_sign) *
546 (current->abs_delta_rps_minus1 + 1);
549 for (j = 0; j <= num_delta_pocs; j++) {
550 flags(used_by_curr_pic_flag[j], 1, j);
551 if (!current->used_by_curr_pic_flag[j])
552 flags(use_delta_flag[j], 1, j);
554 infer(use_delta_flag[j], 1);
555 if (current->use_delta_flag[j])
558 if (num_ref_pics >= HEVC_MAX_DPB_SIZE) {
559 av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid stream: "
560 "short-term ref pic set %d "
561 "contains too many pictures.\n", st_rps_idx);
562 return AVERROR_INVALIDDATA;
565 // Since the stored form of an RPS here is actually the delta-step
566 // form used when inter_ref_pic_set_prediction_flag is not set, we
567 // need to reconstruct that here in order to be able to refer to
568 // the RPS later (which is required for parsing, because we don't
569 // even know what syntax elements appear without it). Therefore,
570 // this code takes the delta-step form of the reference set, turns
571 // it into the delta-array form, applies the prediction process of
572 // 7.4.8, converts the result back to the delta-step form, and
573 // stores that as the current set for future use. Note that the
574 // inferences here mean that writers using prediction will need
575 // to fill in the delta-step values correctly as well - since the
576 // whole RPS prediction process is somewhat overly sophisticated,
577 // this hopefully forms a useful check for them to ensure their
578 // predicted form actually matches what was intended rather than
579 // an onerous additional requirement.
582 for (i = 0; i < ref->num_negative_pics; i++) {
583 d_poc -= ref->delta_poc_s0_minus1[i] + 1;
584 ref_delta_poc_s0[i] = d_poc;
587 for (i = 0; i < ref->num_positive_pics; i++) {
588 d_poc += ref->delta_poc_s1_minus1[i] + 1;
589 ref_delta_poc_s1[i] = d_poc;
593 for (j = ref->num_positive_pics - 1; j >= 0; j--) {
594 d_poc = ref_delta_poc_s1[j] + delta_rps;
595 if (d_poc < 0 && current->use_delta_flag[ref->num_negative_pics + j]) {
596 delta_poc_s0[i] = d_poc;
597 used_by_curr_pic_s0[i++] =
598 current->used_by_curr_pic_flag[ref->num_negative_pics + j];
601 if (delta_rps < 0 && current->use_delta_flag[num_delta_pocs]) {
602 delta_poc_s0[i] = delta_rps;
603 used_by_curr_pic_s0[i++] =
604 current->used_by_curr_pic_flag[num_delta_pocs];
606 for (j = 0; j < ref->num_negative_pics; j++) {
607 d_poc = ref_delta_poc_s0[j] + delta_rps;
608 if (d_poc < 0 && current->use_delta_flag[j]) {
609 delta_poc_s0[i] = d_poc;
610 used_by_curr_pic_s0[i++] = current->used_by_curr_pic_flag[j];
614 infer(num_negative_pics, i);
615 for (i = 0; i < current->num_negative_pics; i++) {
616 infer(delta_poc_s0_minus1[i],
617 -(delta_poc_s0[i] - (i == 0 ? 0 : delta_poc_s0[i - 1])) - 1);
618 infer(used_by_curr_pic_s0_flag[i], used_by_curr_pic_s0[i]);
622 for (j = ref->num_negative_pics - 1; j >= 0; j--) {
623 d_poc = ref_delta_poc_s0[j] + delta_rps;
624 if (d_poc > 0 && current->use_delta_flag[j]) {
625 delta_poc_s1[i] = d_poc;
626 used_by_curr_pic_s1[i++] = current->used_by_curr_pic_flag[j];
629 if (delta_rps > 0 && current->use_delta_flag[num_delta_pocs]) {
630 delta_poc_s1[i] = delta_rps;
631 used_by_curr_pic_s1[i++] =
632 current->used_by_curr_pic_flag[num_delta_pocs];
634 for (j = 0; j < ref->num_positive_pics; j++) {
635 d_poc = ref_delta_poc_s1[j] + delta_rps;
636 if (d_poc > 0 && current->use_delta_flag[ref->num_negative_pics + j]) {
637 delta_poc_s1[i] = d_poc;
638 used_by_curr_pic_s1[i++] =
639 current->used_by_curr_pic_flag[ref->num_negative_pics + j];
643 infer(num_positive_pics, i);
644 for (i = 0; i < current->num_positive_pics; i++) {
645 infer(delta_poc_s1_minus1[i],
646 delta_poc_s1[i] - (i == 0 ? 0 : delta_poc_s1[i - 1]) - 1);
647 infer(used_by_curr_pic_s1_flag[i], used_by_curr_pic_s1[i]);
651 ue(num_negative_pics, 0, 15);
652 ue(num_positive_pics, 0, 15 - current->num_negative_pics);
654 for (i = 0; i < current->num_negative_pics; i++) {
655 ues(delta_poc_s0_minus1[i], 0, INT16_MAX, 1, i);
656 flags(used_by_curr_pic_s0_flag[i], 1, i);
659 for (i = 0; i < current->num_positive_pics; i++) {
660 ues(delta_poc_s1_minus1[i], 0, INT16_MAX, 1, i);
661 flags(used_by_curr_pic_s1_flag[i], 1, i);
668 static int FUNC(scaling_list_data)(CodedBitstreamContext *ctx, RWContext *rw,
669 H265RawScalingList *current)
671 int sizeId, matrixId;
674 for (sizeId = 0; sizeId < 4; sizeId++) {
675 for (matrixId = 0; matrixId < 6; matrixId += (sizeId == 3 ? 3 : 1)) {
676 flags(scaling_list_pred_mode_flag[sizeId][matrixId],
677 2, sizeId, matrixId);
678 if (!current->scaling_list_pred_mode_flag[sizeId][matrixId]) {
679 ues(scaling_list_pred_matrix_id_delta[sizeId][matrixId],
680 0, sizeId == 3 ? matrixId / 3 : matrixId,
681 2, sizeId, matrixId);
683 n = FFMIN(64, 1 << (4 + (sizeId << 1)));
685 ses(scaling_list_dc_coef_minus8[sizeId - 2][matrixId], -7, +247,
686 2, sizeId - 2, matrixId);
688 for (i = 0; i < n; i++) {
689 ses(scaling_list_delta_coeff[sizeId][matrixId][i],
690 -128, +127, 3, sizeId, matrixId, i);
699 static int FUNC(sps_range_extension)(CodedBitstreamContext *ctx, RWContext *rw,
704 flag(transform_skip_rotation_enabled_flag);
705 flag(transform_skip_context_enabled_flag);
706 flag(implicit_rdpcm_enabled_flag);
707 flag(explicit_rdpcm_enabled_flag);
708 flag(extended_precision_processing_flag);
709 flag(intra_smoothing_disabled_flag);
710 flag(high_precision_offsets_enabled_flag);
711 flag(persistent_rice_adaptation_enabled_flag);
712 flag(cabac_bypass_alignment_enabled_flag);
717 static int FUNC(sps_scc_extension)(CodedBitstreamContext *ctx, RWContext *rw,
722 flag(sps_curr_pic_ref_enabled_flag);
724 flag(palette_mode_enabled_flag);
725 if (current->palette_mode_enabled_flag) {
726 ue(palette_max_size, 0, 64);
727 ue(delta_palette_max_predictor_size, 0, 128);
729 flag(sps_palette_predictor_initializer_present_flag);
730 if (current->sps_palette_predictor_initializer_present_flag) {
731 ue(sps_num_palette_predictor_initializer_minus1, 0, 128);
732 for (comp = 0; comp < (current->chroma_format_idc ? 3 : 1); comp++) {
733 int bit_depth = comp == 0 ? current->bit_depth_luma_minus8 + 8
734 : current->bit_depth_chroma_minus8 + 8;
735 for (i = 0; i <= current->sps_num_palette_predictor_initializer_minus1; i++)
736 ubs(bit_depth, sps_palette_predictor_initializers[comp][i], 2, comp, i);
741 u(2, motion_vector_resolution_control_idc, 0, 2);
742 flag(intra_boundary_filtering_disable_flag);
747 static int FUNC(vui_parameters_default)(CodedBitstreamContext *ctx,
748 RWContext *rw, H265RawVUI *current,
751 infer(aspect_ratio_idc, 0);
753 infer(video_format, 5);
754 infer(video_full_range_flag, 0);
755 infer(colour_primaries, 2);
756 infer(transfer_characteristics, 2);
757 infer(matrix_coefficients, 2);
759 infer(chroma_sample_loc_type_top_field, 0);
760 infer(chroma_sample_loc_type_bottom_field, 0);
762 infer(tiles_fixed_structure_flag, 0);
763 infer(motion_vectors_over_pic_boundaries_flag, 1);
764 infer(min_spatial_segmentation_idc, 0);
765 infer(max_bytes_per_pic_denom, 2);
766 infer(max_bits_per_min_cu_denom, 1);
767 infer(log2_max_mv_length_horizontal, 15);
768 infer(log2_max_mv_length_vertical, 15);
773 static int FUNC(sps)(CodedBitstreamContext *ctx, RWContext *rw,
776 CodedBitstreamH265Context *h265 = ctx->priv_data;
777 const H265RawVPS *vps;
779 unsigned int min_cb_log2_size_y, ctb_log2_size_y,
780 min_cb_size_y, min_tb_log2_size_y;
782 HEADER("Sequence Parameter Set");
784 CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, HEVC_NAL_SPS));
786 ub(4, sps_video_parameter_set_id);
787 h265->active_vps = vps = h265->vps[current->sps_video_parameter_set_id];
789 u(3, sps_max_sub_layers_minus1, 0, HEVC_MAX_SUB_LAYERS - 1);
790 flag(sps_temporal_id_nesting_flag);
792 if (vps->vps_max_sub_layers_minus1 > current->sps_max_sub_layers_minus1) {
793 av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid stream: "
794 "sps_max_sub_layers_minus1 (%d) must be less than or equal to "
795 "vps_max_sub_layers_minus1 (%d).\n",
796 vps->vps_max_sub_layers_minus1,
797 current->sps_max_sub_layers_minus1);
798 return AVERROR_INVALIDDATA;
800 if (vps->vps_temporal_id_nesting_flag &&
801 !current->sps_temporal_id_nesting_flag) {
802 av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid stream: "
803 "sps_temporal_id_nesting_flag must be 1 if "
804 "vps_temporal_id_nesting_flag is 1.\n");
805 return AVERROR_INVALIDDATA;
809 CHECK(FUNC(profile_tier_level)(ctx, rw, ¤t->profile_tier_level,
810 1, current->sps_max_sub_layers_minus1));
812 ue(sps_seq_parameter_set_id, 0, 15);
814 ue(chroma_format_idc, 0, 3);
815 if (current->chroma_format_idc == 3)
816 flag(separate_colour_plane_flag);
818 infer(separate_colour_plane_flag, 0);
820 ue(pic_width_in_luma_samples, 1, HEVC_MAX_WIDTH);
821 ue(pic_height_in_luma_samples, 1, HEVC_MAX_HEIGHT);
823 flag(conformance_window_flag);
824 if (current->conformance_window_flag) {
825 ue(conf_win_left_offset, 0, current->pic_width_in_luma_samples);
826 ue(conf_win_right_offset, 0, current->pic_width_in_luma_samples);
827 ue(conf_win_top_offset, 0, current->pic_height_in_luma_samples);
828 ue(conf_win_bottom_offset, 0, current->pic_height_in_luma_samples);
830 infer(conf_win_left_offset, 0);
831 infer(conf_win_right_offset, 0);
832 infer(conf_win_top_offset, 0);
833 infer(conf_win_bottom_offset, 0);
836 ue(bit_depth_luma_minus8, 0, 8);
837 ue(bit_depth_chroma_minus8, 0, 8);
839 ue(log2_max_pic_order_cnt_lsb_minus4, 0, 12);
841 flag(sps_sub_layer_ordering_info_present_flag);
842 for (i = (current->sps_sub_layer_ordering_info_present_flag ?
843 0 : current->sps_max_sub_layers_minus1);
844 i <= current->sps_max_sub_layers_minus1; i++) {
845 ues(sps_max_dec_pic_buffering_minus1[i],
846 0, HEVC_MAX_DPB_SIZE - 1, 1, i);
847 ues(sps_max_num_reorder_pics[i],
848 0, current->sps_max_dec_pic_buffering_minus1[i], 1, i);
849 ues(sps_max_latency_increase_plus1[i],
850 0, UINT32_MAX - 1, 1, i);
852 if (!current->sps_sub_layer_ordering_info_present_flag) {
853 for (i = 0; i < current->sps_max_sub_layers_minus1; i++) {
854 infer(sps_max_dec_pic_buffering_minus1[i],
855 current->sps_max_dec_pic_buffering_minus1[current->sps_max_sub_layers_minus1]);
856 infer(sps_max_num_reorder_pics[i],
857 current->sps_max_num_reorder_pics[current->sps_max_sub_layers_minus1]);
858 infer(sps_max_latency_increase_plus1[i],
859 current->sps_max_latency_increase_plus1[current->sps_max_sub_layers_minus1]);
863 ue(log2_min_luma_coding_block_size_minus3, 0, 3);
864 min_cb_log2_size_y = current->log2_min_luma_coding_block_size_minus3 + 3;
866 ue(log2_diff_max_min_luma_coding_block_size, 0, 3);
867 ctb_log2_size_y = min_cb_log2_size_y +
868 current->log2_diff_max_min_luma_coding_block_size;
870 min_cb_size_y = 1 << min_cb_log2_size_y;
871 if (current->pic_width_in_luma_samples % min_cb_size_y ||
872 current->pic_height_in_luma_samples % min_cb_size_y) {
873 av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid dimensions: %ux%u not divisible "
874 "by MinCbSizeY = %u.\n", current->pic_width_in_luma_samples,
875 current->pic_height_in_luma_samples, min_cb_size_y);
876 return AVERROR_INVALIDDATA;
879 ue(log2_min_luma_transform_block_size_minus2, 0, min_cb_log2_size_y - 3);
880 min_tb_log2_size_y = current->log2_min_luma_transform_block_size_minus2 + 2;
882 ue(log2_diff_max_min_luma_transform_block_size,
883 0, FFMIN(ctb_log2_size_y, 5) - min_tb_log2_size_y);
885 ue(max_transform_hierarchy_depth_inter,
886 0, ctb_log2_size_y - min_tb_log2_size_y);
887 ue(max_transform_hierarchy_depth_intra,
888 0, ctb_log2_size_y - min_tb_log2_size_y);
890 flag(scaling_list_enabled_flag);
891 if (current->scaling_list_enabled_flag) {
892 flag(sps_scaling_list_data_present_flag);
893 if (current->sps_scaling_list_data_present_flag)
894 CHECK(FUNC(scaling_list_data)(ctx, rw, ¤t->scaling_list));
896 infer(sps_scaling_list_data_present_flag, 0);
899 flag(amp_enabled_flag);
900 flag(sample_adaptive_offset_enabled_flag);
902 flag(pcm_enabled_flag);
903 if (current->pcm_enabled_flag) {
904 u(4, pcm_sample_bit_depth_luma_minus1,
905 0, current->bit_depth_luma_minus8 + 8 - 1);
906 u(4, pcm_sample_bit_depth_chroma_minus1,
907 0, current->bit_depth_chroma_minus8 + 8 - 1);
909 ue(log2_min_pcm_luma_coding_block_size_minus3,
910 FFMIN(min_cb_log2_size_y, 5) - 3, FFMIN(ctb_log2_size_y, 5) - 3);
911 ue(log2_diff_max_min_pcm_luma_coding_block_size,
912 0, FFMIN(ctb_log2_size_y, 5) - (current->log2_min_pcm_luma_coding_block_size_minus3 + 3));
914 flag(pcm_loop_filter_disabled_flag);
917 ue(num_short_term_ref_pic_sets, 0, HEVC_MAX_SHORT_TERM_REF_PIC_SETS);
918 for (i = 0; i < current->num_short_term_ref_pic_sets; i++)
919 CHECK(FUNC(st_ref_pic_set)(ctx, rw, ¤t->st_ref_pic_set[i], i, current));
921 flag(long_term_ref_pics_present_flag);
922 if (current->long_term_ref_pics_present_flag) {
923 ue(num_long_term_ref_pics_sps, 0, HEVC_MAX_LONG_TERM_REF_PICS);
924 for (i = 0; i < current->num_long_term_ref_pics_sps; i++) {
925 ubs(current->log2_max_pic_order_cnt_lsb_minus4 + 4,
926 lt_ref_pic_poc_lsb_sps[i], 1, i);
927 flags(used_by_curr_pic_lt_sps_flag[i], 1, i);
931 flag(sps_temporal_mvp_enabled_flag);
932 flag(strong_intra_smoothing_enabled_flag);
934 flag(vui_parameters_present_flag);
935 if (current->vui_parameters_present_flag)
936 CHECK(FUNC(vui_parameters)(ctx, rw, ¤t->vui, current));
938 CHECK(FUNC(vui_parameters_default)(ctx, rw, ¤t->vui, current));
940 flag(sps_extension_present_flag);
941 if (current->sps_extension_present_flag) {
942 flag(sps_range_extension_flag);
943 flag(sps_multilayer_extension_flag);
944 flag(sps_3d_extension_flag);
945 flag(sps_scc_extension_flag);
946 ub(4, sps_extension_4bits);
949 if (current->sps_range_extension_flag)
950 CHECK(FUNC(sps_range_extension)(ctx, rw, current));
951 if (current->sps_multilayer_extension_flag)
952 return AVERROR_PATCHWELCOME;
953 if (current->sps_3d_extension_flag)
954 return AVERROR_PATCHWELCOME;
955 if (current->sps_scc_extension_flag)
956 CHECK(FUNC(sps_scc_extension)(ctx, rw, current));
957 if (current->sps_extension_4bits)
958 CHECK(FUNC(extension_data)(ctx, rw, ¤t->extension_data));
960 CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
965 static int FUNC(pps_range_extension)(CodedBitstreamContext *ctx, RWContext *rw,
968 CodedBitstreamH265Context *h265 = ctx->priv_data;
969 const H265RawSPS *sps = h265->active_sps;
972 if (current->transform_skip_enabled_flag)
973 ue(log2_max_transform_skip_block_size_minus2, 0, 3);
974 flag(cross_component_prediction_enabled_flag);
976 flag(chroma_qp_offset_list_enabled_flag);
977 if (current->chroma_qp_offset_list_enabled_flag) {
978 ue(diff_cu_chroma_qp_offset_depth,
979 0, sps->log2_diff_max_min_luma_coding_block_size);
980 ue(chroma_qp_offset_list_len_minus1, 0, 5);
981 for (i = 0; i <= current->chroma_qp_offset_list_len_minus1; i++) {
982 ses(cb_qp_offset_list[i], -12, +12, 1, i);
983 ses(cr_qp_offset_list[i], -12, +12, 1, i);
987 ue(log2_sao_offset_scale_luma, 0, FFMAX(0, sps->bit_depth_luma_minus8 - 2));
988 ue(log2_sao_offset_scale_chroma, 0, FFMAX(0, sps->bit_depth_chroma_minus8 - 2));
993 static int FUNC(pps_scc_extension)(CodedBitstreamContext *ctx, RWContext *rw,
998 flag(pps_curr_pic_ref_enabled_flag);
1000 flag(residual_adaptive_colour_transform_enabled_flag);
1001 if (current->residual_adaptive_colour_transform_enabled_flag) {
1002 flag(pps_slice_act_qp_offsets_present_flag);
1003 se(pps_act_y_qp_offset_plus5, -7, +17);
1004 se(pps_act_cb_qp_offset_plus5, -7, +17);
1005 se(pps_act_cr_qp_offset_plus3, -9, +15);
1007 infer(pps_slice_act_qp_offsets_present_flag, 0);
1008 infer(pps_act_y_qp_offset_plus5, 0);
1009 infer(pps_act_cb_qp_offset_plus5, 0);
1010 infer(pps_act_cr_qp_offset_plus3, 0);
1013 flag(pps_palette_predictor_initializer_present_flag);
1014 if (current->pps_palette_predictor_initializer_present_flag) {
1015 ue(pps_num_palette_predictor_initializer, 0, 128);
1016 if (current->pps_num_palette_predictor_initializer > 0) {
1017 flag(monochrome_palette_flag);
1018 ue(luma_bit_depth_entry_minus8, 0, 8);
1019 if (!current->monochrome_palette_flag)
1020 ue(chroma_bit_depth_entry_minus8, 0, 8);
1021 for (comp = 0; comp < (current->monochrome_palette_flag ? 1 : 3); comp++) {
1022 int bit_depth = comp == 0 ? current->luma_bit_depth_entry_minus8 + 8
1023 : current->chroma_bit_depth_entry_minus8 + 8;
1024 for (i = 0; i < current->pps_num_palette_predictor_initializer; i++)
1025 ubs(bit_depth, pps_palette_predictor_initializers[comp][i], 2, comp, i);
1033 static int FUNC(pps)(CodedBitstreamContext *ctx, RWContext *rw,
1034 H265RawPPS *current)
1036 CodedBitstreamH265Context *h265 = ctx->priv_data;
1037 const H265RawSPS *sps;
1040 HEADER("Picture Parameter Set");
1042 CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, HEVC_NAL_PPS));
1044 ue(pps_pic_parameter_set_id, 0, 63);
1045 ue(pps_seq_parameter_set_id, 0, 15);
1046 sps = h265->sps[current->pps_seq_parameter_set_id];
1048 av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n",
1049 current->pps_seq_parameter_set_id);
1050 return AVERROR_INVALIDDATA;
1052 h265->active_sps = sps;
1054 flag(dependent_slice_segments_enabled_flag);
1055 flag(output_flag_present_flag);
1056 ub(3, num_extra_slice_header_bits);
1057 flag(sign_data_hiding_enabled_flag);
1058 flag(cabac_init_present_flag);
1060 ue(num_ref_idx_l0_default_active_minus1, 0, 14);
1061 ue(num_ref_idx_l1_default_active_minus1, 0, 14);
1063 se(init_qp_minus26, -(26 + 6 * sps->bit_depth_luma_minus8), +25);
1065 flag(constrained_intra_pred_flag);
1066 flag(transform_skip_enabled_flag);
1067 flag(cu_qp_delta_enabled_flag);
1068 if (current->cu_qp_delta_enabled_flag)
1069 ue(diff_cu_qp_delta_depth,
1070 0, sps->log2_diff_max_min_luma_coding_block_size);
1072 infer(diff_cu_qp_delta_depth, 0);
1074 se(pps_cb_qp_offset, -12, +12);
1075 se(pps_cr_qp_offset, -12, +12);
1076 flag(pps_slice_chroma_qp_offsets_present_flag);
1078 flag(weighted_pred_flag);
1079 flag(weighted_bipred_flag);
1081 flag(transquant_bypass_enabled_flag);
1082 flag(tiles_enabled_flag);
1083 flag(entropy_coding_sync_enabled_flag);
1085 if (current->tiles_enabled_flag) {
1086 ue(num_tile_columns_minus1, 0, HEVC_MAX_TILE_COLUMNS);
1087 ue(num_tile_rows_minus1, 0, HEVC_MAX_TILE_ROWS);
1088 flag(uniform_spacing_flag);
1089 if (!current->uniform_spacing_flag) {
1090 for (i = 0; i < current->num_tile_columns_minus1; i++)
1091 ues(column_width_minus1[i], 0, sps->pic_width_in_luma_samples, 1, i);
1092 for (i = 0; i < current->num_tile_rows_minus1; i++)
1093 ues(row_height_minus1[i], 0, sps->pic_height_in_luma_samples, 1, i);
1095 flag(loop_filter_across_tiles_enabled_flag);
1097 infer(num_tile_columns_minus1, 0);
1098 infer(num_tile_rows_minus1, 0);
1101 flag(pps_loop_filter_across_slices_enabled_flag);
1102 flag(deblocking_filter_control_present_flag);
1103 if (current->deblocking_filter_control_present_flag) {
1104 flag(deblocking_filter_override_enabled_flag);
1105 flag(pps_deblocking_filter_disabled_flag);
1106 if (!current->pps_deblocking_filter_disabled_flag) {
1107 se(pps_beta_offset_div2, -6, +6);
1108 se(pps_tc_offset_div2, -6, +6);
1110 infer(pps_beta_offset_div2, 0);
1111 infer(pps_tc_offset_div2, 0);
1114 infer(deblocking_filter_override_enabled_flag, 0);
1115 infer(pps_deblocking_filter_disabled_flag, 0);
1116 infer(pps_beta_offset_div2, 0);
1117 infer(pps_tc_offset_div2, 0);
1120 flag(pps_scaling_list_data_present_flag);
1121 if (current->pps_scaling_list_data_present_flag)
1122 CHECK(FUNC(scaling_list_data)(ctx, rw, ¤t->scaling_list));
1124 flag(lists_modification_present_flag);
1126 ue(log2_parallel_merge_level_minus2,
1127 0, (sps->log2_min_luma_coding_block_size_minus3 + 3 +
1128 sps->log2_diff_max_min_luma_coding_block_size - 2));
1130 flag(slice_segment_header_extension_present_flag);
1132 flag(pps_extension_present_flag);
1133 if (current->pps_extension_present_flag) {
1134 flag(pps_range_extension_flag);
1135 flag(pps_multilayer_extension_flag);
1136 flag(pps_3d_extension_flag);
1137 flag(pps_scc_extension_flag);
1138 ub(4, pps_extension_4bits);
1140 if (current->pps_range_extension_flag)
1141 CHECK(FUNC(pps_range_extension)(ctx, rw, current));
1142 if (current->pps_multilayer_extension_flag)
1143 return AVERROR_PATCHWELCOME;
1144 if (current->pps_3d_extension_flag)
1145 return AVERROR_PATCHWELCOME;
1146 if (current->pps_scc_extension_flag)
1147 CHECK(FUNC(pps_scc_extension)(ctx, rw, current));
1148 if (current->pps_extension_4bits)
1149 CHECK(FUNC(extension_data)(ctx, rw, ¤t->extension_data));
1151 CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
1156 static int FUNC(aud)(CodedBitstreamContext *ctx, RWContext *rw,
1157 H265RawAUD *current)
1161 HEADER("Access Unit Delimiter");
1163 CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, HEVC_NAL_AUD));
1165 u(3, pic_type, 0, 2);
1167 CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
1172 static int FUNC(ref_pic_lists_modification)(CodedBitstreamContext *ctx, RWContext *rw,
1173 H265RawSliceHeader *current,
1174 unsigned int num_pic_total_curr)
1176 unsigned int entry_size;
1179 entry_size = av_log2(num_pic_total_curr - 1) + 1;
1181 flag(ref_pic_list_modification_flag_l0);
1182 if (current->ref_pic_list_modification_flag_l0) {
1183 for (i = 0; i <= current->num_ref_idx_l0_active_minus1; i++)
1184 us(entry_size, list_entry_l0[i], 0, num_pic_total_curr - 1, 1, i);
1187 if (current->slice_type == HEVC_SLICE_B) {
1188 flag(ref_pic_list_modification_flag_l1);
1189 if (current->ref_pic_list_modification_flag_l1) {
1190 for (i = 0; i <= current->num_ref_idx_l1_active_minus1; i++)
1191 us(entry_size, list_entry_l1[i], 0, num_pic_total_curr - 1, 1, i);
1198 static int FUNC(pred_weight_table)(CodedBitstreamContext *ctx, RWContext *rw,
1199 H265RawSliceHeader *current)
1201 CodedBitstreamH265Context *h265 = ctx->priv_data;
1202 const H265RawSPS *sps = h265->active_sps;
1204 int chroma = !sps->separate_colour_plane_flag &&
1205 sps->chroma_format_idc != 0;
1207 ue(luma_log2_weight_denom, 0, 7);
1209 se(delta_chroma_log2_weight_denom, -7, 7);
1211 infer(delta_chroma_log2_weight_denom, 0);
1213 for (i = 0; i <= current->num_ref_idx_l0_active_minus1; i++) {
1214 if (1 /* is not same POC and same layer_id */)
1215 flags(luma_weight_l0_flag[i], 1, i);
1217 infer(luma_weight_l0_flag[i], 0);
1220 for (i = 0; i <= current->num_ref_idx_l0_active_minus1; i++) {
1221 if (1 /* is not same POC and same layer_id */)
1222 flags(chroma_weight_l0_flag[i], 1, i);
1224 infer(chroma_weight_l0_flag[i], 0);
1228 for (i = 0; i <= current->num_ref_idx_l0_active_minus1; i++) {
1229 if (current->luma_weight_l0_flag[i]) {
1230 ses(delta_luma_weight_l0[i], -128, +127, 1, i);
1231 ses(luma_offset_l0[i],
1232 -(1 << (sps->bit_depth_luma_minus8 + 8 - 1)),
1233 ((1 << (sps->bit_depth_luma_minus8 + 8 - 1)) - 1), 1, i);
1235 infer(delta_luma_weight_l0[i], 0);
1236 infer(luma_offset_l0[i], 0);
1238 if (current->chroma_weight_l0_flag[i]) {
1239 for (j = 0; j < 2; j++) {
1240 ses(delta_chroma_weight_l0[i][j], -128, +127, 2, i, j);
1241 ses(chroma_offset_l0[i][j],
1242 -(4 << (sps->bit_depth_chroma_minus8 + 8 - 1)),
1243 ((4 << (sps->bit_depth_chroma_minus8 + 8 - 1)) - 1), 2, i, j);
1246 for (j = 0; j < 2; j++) {
1247 infer(delta_chroma_weight_l0[i][j], 0);
1248 infer(chroma_offset_l0[i][j], 0);
1253 if (current->slice_type == HEVC_SLICE_B) {
1254 for (i = 0; i <= current->num_ref_idx_l1_active_minus1; i++) {
1255 if (1 /* RefPicList1[i] is not CurrPic, nor is it in a different layer */)
1256 flags(luma_weight_l1_flag[i], 1, i);
1258 infer(luma_weight_l1_flag[i], 0);
1261 for (i = 0; i <= current->num_ref_idx_l1_active_minus1; i++) {
1262 if (1 /* RefPicList1[i] is not CurrPic, nor is it in a different layer */)
1263 flags(chroma_weight_l1_flag[i], 1, i);
1265 infer(chroma_weight_l1_flag[i], 0);
1269 for (i = 0; i <= current->num_ref_idx_l1_active_minus1; i++) {
1270 if (current->luma_weight_l1_flag[i]) {
1271 ses(delta_luma_weight_l1[i], -128, +127, 1, i);
1272 ses(luma_offset_l1[i],
1273 -(1 << (sps->bit_depth_luma_minus8 + 8 - 1)),
1274 ((1 << (sps->bit_depth_luma_minus8 + 8 - 1)) - 1), 1, i);
1276 infer(delta_luma_weight_l1[i], 0);
1277 infer(luma_offset_l1[i], 0);
1279 if (current->chroma_weight_l1_flag[i]) {
1280 for (j = 0; j < 2; j++) {
1281 ses(delta_chroma_weight_l1[i][j], -128, +127, 2, i, j);
1282 ses(chroma_offset_l1[i][j],
1283 -(4 << (sps->bit_depth_chroma_minus8 + 8 - 1)),
1284 ((4 << (sps->bit_depth_chroma_minus8 + 8 - 1)) - 1), 2, i, j);
1287 for (j = 0; j < 2; j++) {
1288 infer(delta_chroma_weight_l1[i][j], 0);
1289 infer(chroma_offset_l1[i][j], 0);
1298 static int FUNC(slice_segment_header)(CodedBitstreamContext *ctx, RWContext *rw,
1299 H265RawSliceHeader *current)
1301 CodedBitstreamH265Context *h265 = ctx->priv_data;
1302 const H265RawSPS *sps;
1303 const H265RawPPS *pps;
1304 unsigned int min_cb_log2_size_y, ctb_log2_size_y, ctb_size_y;
1305 unsigned int pic_width_in_ctbs_y, pic_height_in_ctbs_y, pic_size_in_ctbs_y;
1306 unsigned int num_pic_total_curr = 0;
1309 HEADER("Slice Segment Header");
1311 CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, -1));
1313 flag(first_slice_segment_in_pic_flag);
1315 if (current->nal_unit_header.nal_unit_type >= HEVC_NAL_BLA_W_LP &&
1316 current->nal_unit_header.nal_unit_type <= HEVC_NAL_RSV_IRAP_VCL23)
1317 flag(no_output_of_prior_pics_flag);
1319 ue(slice_pic_parameter_set_id, 0, 63);
1321 pps = h265->pps[current->slice_pic_parameter_set_id];
1323 av_log(ctx->log_ctx, AV_LOG_ERROR, "PPS id %d not available.\n",
1324 current->slice_pic_parameter_set_id);
1325 return AVERROR_INVALIDDATA;
1327 h265->active_pps = pps;
1329 sps = h265->sps[pps->pps_seq_parameter_set_id];
1331 av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n",
1332 pps->pps_seq_parameter_set_id);
1333 return AVERROR_INVALIDDATA;
1335 h265->active_sps = sps;
1337 min_cb_log2_size_y = sps->log2_min_luma_coding_block_size_minus3 + 3;
1338 ctb_log2_size_y = min_cb_log2_size_y + sps->log2_diff_max_min_luma_coding_block_size;
1339 ctb_size_y = 1 << ctb_log2_size_y;
1340 pic_width_in_ctbs_y =
1341 (sps->pic_width_in_luma_samples + ctb_size_y - 1) / ctb_size_y;
1342 pic_height_in_ctbs_y =
1343 (sps->pic_height_in_luma_samples + ctb_size_y - 1) / ctb_size_y;
1344 pic_size_in_ctbs_y = pic_width_in_ctbs_y * pic_height_in_ctbs_y;
1346 if (!current->first_slice_segment_in_pic_flag) {
1347 unsigned int address_size = av_log2(pic_size_in_ctbs_y - 1) + 1;
1348 if (pps->dependent_slice_segments_enabled_flag)
1349 flag(dependent_slice_segment_flag);
1351 infer(dependent_slice_segment_flag, 0);
1352 u(address_size, slice_segment_address, 0, pic_size_in_ctbs_y - 1);
1354 infer(dependent_slice_segment_flag, 0);
1357 if (!current->dependent_slice_segment_flag) {
1358 for (i = 0; i < pps->num_extra_slice_header_bits; i++)
1359 flags(slice_reserved_flag[i], 1, i);
1361 ue(slice_type, 0, 2);
1363 if (pps->output_flag_present_flag)
1364 flag(pic_output_flag);
1366 if (sps->separate_colour_plane_flag)
1367 u(2, colour_plane_id, 0, 2);
1369 if (current->nal_unit_header.nal_unit_type != HEVC_NAL_IDR_W_RADL &&
1370 current->nal_unit_header.nal_unit_type != HEVC_NAL_IDR_N_LP) {
1371 const H265RawSTRefPicSet *rps;
1373 ub(sps->log2_max_pic_order_cnt_lsb_minus4 + 4, slice_pic_order_cnt_lsb);
1375 flag(short_term_ref_pic_set_sps_flag);
1376 if (!current->short_term_ref_pic_set_sps_flag) {
1377 CHECK(FUNC(st_ref_pic_set)(ctx, rw, ¤t->short_term_ref_pic_set,
1378 sps->num_short_term_ref_pic_sets, sps));
1379 rps = ¤t->short_term_ref_pic_set;
1380 } else if (sps->num_short_term_ref_pic_sets > 1) {
1381 unsigned int idx_size = av_log2(sps->num_short_term_ref_pic_sets - 1) + 1;
1382 u(idx_size, short_term_ref_pic_set_idx,
1383 0, sps->num_short_term_ref_pic_sets - 1);
1384 rps = &sps->st_ref_pic_set[current->short_term_ref_pic_set_idx];
1386 infer(short_term_ref_pic_set_idx, 0);
1387 rps = &sps->st_ref_pic_set[0];
1390 num_pic_total_curr = 0;
1391 for (i = 0; i < rps->num_negative_pics; i++)
1392 if (rps->used_by_curr_pic_s0_flag[i])
1393 ++num_pic_total_curr;
1394 for (i = 0; i < rps->num_positive_pics; i++)
1395 if (rps->used_by_curr_pic_s1_flag[i])
1396 ++num_pic_total_curr;
1398 if (sps->long_term_ref_pics_present_flag) {
1399 unsigned int idx_size;
1401 if (sps->num_long_term_ref_pics_sps > 0) {
1402 ue(num_long_term_sps, 0, sps->num_long_term_ref_pics_sps);
1403 idx_size = av_log2(sps->num_long_term_ref_pics_sps - 1) + 1;
1405 infer(num_long_term_sps, 0);
1408 ue(num_long_term_pics, 0, HEVC_MAX_REFS - current->num_long_term_sps);
1410 for (i = 0; i < current->num_long_term_sps +
1411 current->num_long_term_pics; i++) {
1412 if (i < current->num_long_term_sps) {
1413 if (sps->num_long_term_ref_pics_sps > 1)
1414 us(idx_size, lt_idx_sps[i],
1415 0, sps->num_long_term_ref_pics_sps - 1, 1, i);
1416 if (sps->used_by_curr_pic_lt_sps_flag[current->lt_idx_sps[i]])
1417 ++num_pic_total_curr;
1419 ubs(sps->log2_max_pic_order_cnt_lsb_minus4 + 4, poc_lsb_lt[i], 1, i);
1420 flags(used_by_curr_pic_lt_flag[i], 1, i);
1421 if (current->used_by_curr_pic_lt_flag[i])
1422 ++num_pic_total_curr;
1424 flags(delta_poc_msb_present_flag[i], 1, i);
1425 if (current->delta_poc_msb_present_flag[i])
1426 ues(delta_poc_msb_cycle_lt[i], 0, UINT32_MAX - 1, 1, i);
1428 infer(delta_poc_msb_cycle_lt[i], 0);
1432 if (sps->sps_temporal_mvp_enabled_flag)
1433 flag(slice_temporal_mvp_enabled_flag);
1435 infer(slice_temporal_mvp_enabled_flag, 0);
1437 if (pps->pps_curr_pic_ref_enabled_flag)
1438 ++num_pic_total_curr;
1441 if (sps->sample_adaptive_offset_enabled_flag) {
1442 flag(slice_sao_luma_flag);
1443 if (!sps->separate_colour_plane_flag && sps->chroma_format_idc != 0)
1444 flag(slice_sao_chroma_flag);
1446 infer(slice_sao_chroma_flag, 0);
1448 infer(slice_sao_luma_flag, 0);
1449 infer(slice_sao_chroma_flag, 0);
1452 if (current->slice_type == HEVC_SLICE_P ||
1453 current->slice_type == HEVC_SLICE_B) {
1454 flag(num_ref_idx_active_override_flag);
1455 if (current->num_ref_idx_active_override_flag) {
1456 ue(num_ref_idx_l0_active_minus1, 0, 14);
1457 if (current->slice_type == HEVC_SLICE_B)
1458 ue(num_ref_idx_l1_active_minus1, 0, 14);
1460 infer(num_ref_idx_l1_active_minus1, pps->num_ref_idx_l1_default_active_minus1);
1462 infer(num_ref_idx_l0_active_minus1, pps->num_ref_idx_l0_default_active_minus1);
1463 infer(num_ref_idx_l1_active_minus1, pps->num_ref_idx_l1_default_active_minus1);
1466 if (pps->lists_modification_present_flag && num_pic_total_curr > 1)
1467 CHECK(FUNC(ref_pic_lists_modification)(ctx, rw, current,
1468 num_pic_total_curr));
1470 if (current->slice_type == HEVC_SLICE_B)
1471 flag(mvd_l1_zero_flag);
1472 if (pps->cabac_init_present_flag)
1473 flag(cabac_init_flag);
1475 infer(cabac_init_flag, 0);
1476 if (current->slice_temporal_mvp_enabled_flag) {
1477 if (current->slice_type == HEVC_SLICE_B)
1478 flag(collocated_from_l0_flag);
1480 infer(collocated_from_l0_flag, 1);
1481 if (current->collocated_from_l0_flag) {
1482 if (current->num_ref_idx_l0_active_minus1 > 0)
1483 ue(collocated_ref_idx, 0, current->num_ref_idx_l0_active_minus1);
1485 infer(collocated_ref_idx, 0);
1487 if (current->num_ref_idx_l1_active_minus1 > 0)
1488 ue(collocated_ref_idx, 0, current->num_ref_idx_l1_active_minus1);
1490 infer(collocated_ref_idx, 0);
1494 if ((pps->weighted_pred_flag && current->slice_type == HEVC_SLICE_P) ||
1495 (pps->weighted_bipred_flag && current->slice_type == HEVC_SLICE_B))
1496 CHECK(FUNC(pred_weight_table)(ctx, rw, current));
1498 ue(five_minus_max_num_merge_cand, 0, 4);
1499 if (sps->motion_vector_resolution_control_idc == 2)
1500 flag(use_integer_mv_flag);
1502 infer(use_integer_mv_flag, sps->motion_vector_resolution_control_idc);
1506 - 6 * sps->bit_depth_luma_minus8 - (pps->init_qp_minus26 + 26),
1507 + 51 - (pps->init_qp_minus26 + 26));
1508 if (pps->pps_slice_chroma_qp_offsets_present_flag) {
1509 se(slice_cb_qp_offset, -12, +12);
1510 se(slice_cr_qp_offset, -12, +12);
1512 infer(slice_cb_qp_offset, 0);
1513 infer(slice_cr_qp_offset, 0);
1515 if (pps->pps_slice_act_qp_offsets_present_flag) {
1516 se(slice_act_y_qp_offset,
1517 -12 - (pps->pps_act_y_qp_offset_plus5 - 5),
1518 +12 - (pps->pps_act_y_qp_offset_plus5 - 5));
1519 se(slice_act_cb_qp_offset,
1520 -12 - (pps->pps_act_cb_qp_offset_plus5 - 5),
1521 +12 - (pps->pps_act_cb_qp_offset_plus5 - 5));
1522 se(slice_act_cr_qp_offset,
1523 -12 - (pps->pps_act_cr_qp_offset_plus3 - 3),
1524 +12 - (pps->pps_act_cr_qp_offset_plus3 - 3));
1526 infer(slice_act_y_qp_offset, 0);
1527 infer(slice_act_cb_qp_offset, 0);
1528 infer(slice_act_cr_qp_offset, 0);
1530 if (pps->chroma_qp_offset_list_enabled_flag)
1531 flag(cu_chroma_qp_offset_enabled_flag);
1533 infer(cu_chroma_qp_offset_enabled_flag, 0);
1535 if (pps->deblocking_filter_override_enabled_flag)
1536 flag(deblocking_filter_override_flag);
1538 infer(deblocking_filter_override_flag, 0);
1539 if (current->deblocking_filter_override_flag) {
1540 flag(slice_deblocking_filter_disabled_flag);
1541 if (!current->slice_deblocking_filter_disabled_flag) {
1542 se(slice_beta_offset_div2, -6, +6);
1543 se(slice_tc_offset_div2, -6, +6);
1545 infer(slice_beta_offset_div2, pps->pps_beta_offset_div2);
1546 infer(slice_tc_offset_div2, pps->pps_tc_offset_div2);
1549 infer(slice_deblocking_filter_disabled_flag,
1550 pps->pps_deblocking_filter_disabled_flag);
1551 infer(slice_beta_offset_div2, pps->pps_beta_offset_div2);
1552 infer(slice_tc_offset_div2, pps->pps_tc_offset_div2);
1554 if (pps->pps_loop_filter_across_slices_enabled_flag &&
1555 (current->slice_sao_luma_flag || current->slice_sao_chroma_flag ||
1556 !current->slice_deblocking_filter_disabled_flag))
1557 flag(slice_loop_filter_across_slices_enabled_flag);
1559 infer(slice_loop_filter_across_slices_enabled_flag,
1560 pps->pps_loop_filter_across_slices_enabled_flag);
1563 if (pps->tiles_enabled_flag || pps->entropy_coding_sync_enabled_flag) {
1564 unsigned int num_entry_point_offsets_limit;
1565 if (!pps->tiles_enabled_flag && pps->entropy_coding_sync_enabled_flag)
1566 num_entry_point_offsets_limit = pic_height_in_ctbs_y - 1;
1567 else if (pps->tiles_enabled_flag && !pps->entropy_coding_sync_enabled_flag)
1568 num_entry_point_offsets_limit =
1569 (pps->num_tile_columns_minus1 + 1) * (pps->num_tile_rows_minus1 + 1);
1571 num_entry_point_offsets_limit =
1572 (pps->num_tile_columns_minus1 + 1) * pic_height_in_ctbs_y - 1;
1573 ue(num_entry_point_offsets, 0, num_entry_point_offsets_limit);
1575 if (current->num_entry_point_offsets > HEVC_MAX_ENTRY_POINT_OFFSETS) {
1576 av_log(ctx->log_ctx, AV_LOG_ERROR, "Too many entry points: "
1577 "%"PRIu16".\n", current->num_entry_point_offsets);
1578 return AVERROR_PATCHWELCOME;
1581 if (current->num_entry_point_offsets > 0) {
1582 ue(offset_len_minus1, 0, 31);
1583 for (i = 0; i < current->num_entry_point_offsets; i++)
1584 ubs(current->offset_len_minus1 + 1, entry_point_offset_minus1[i], 1, i);
1588 if (pps->slice_segment_header_extension_present_flag) {
1589 ue(slice_segment_header_extension_length, 0, 256);
1590 for (i = 0; i < current->slice_segment_header_extension_length; i++)
1591 us(8, slice_segment_header_extension_data_byte[i], 0x00, 0xff, 1, i);
1594 CHECK(FUNC(byte_alignment)(ctx, rw));
1599 static int FUNC(sei_buffering_period)
1600 (CodedBitstreamContext *ctx, RWContext *rw,
1601 H265RawSEIBufferingPeriod *current, SEIMessageState *sei)
1603 CodedBitstreamH265Context *h265 = ctx->priv_data;
1604 const H265RawSPS *sps;
1605 const H265RawHRDParameters *hrd;
1609 int start_pos, end_pos;
1610 start_pos = get_bits_count(rw);
1613 HEADER("Buffering Period");
1615 ue(bp_seq_parameter_set_id, 0, HEVC_MAX_SPS_COUNT - 1);
1617 sps = h265->sps[current->bp_seq_parameter_set_id];
1619 av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n",
1620 current->bp_seq_parameter_set_id);
1621 return AVERROR_INVALIDDATA;
1623 h265->active_sps = sps;
1625 if (!sps->vui_parameters_present_flag ||
1626 !sps->vui.vui_hrd_parameters_present_flag) {
1627 av_log(ctx->log_ctx, AV_LOG_ERROR, "Buffering period SEI requires "
1628 "HRD parameters to be present in SPS.\n");
1629 return AVERROR_INVALIDDATA;
1631 hrd = &sps->vui.hrd_parameters;
1632 if (!hrd->nal_hrd_parameters_present_flag &&
1633 !hrd->vcl_hrd_parameters_present_flag) {
1634 av_log(ctx->log_ctx, AV_LOG_ERROR, "Buffering period SEI requires "
1635 "NAL or VCL HRD parameters to be present.\n");
1636 return AVERROR_INVALIDDATA;
1639 if (!hrd->sub_pic_hrd_params_present_flag)
1640 flag(irap_cpb_params_present_flag);
1642 infer(irap_cpb_params_present_flag, 0);
1643 if (current->irap_cpb_params_present_flag) {
1644 length = hrd->au_cpb_removal_delay_length_minus1 + 1;
1645 ub(length, cpb_delay_offset);
1646 length = hrd->dpb_output_delay_length_minus1 + 1;
1647 ub(length, dpb_delay_offset);
1649 infer(cpb_delay_offset, 0);
1650 infer(dpb_delay_offset, 0);
1653 flag(concatenation_flag);
1655 length = hrd->au_cpb_removal_delay_length_minus1 + 1;
1656 ub(length, au_cpb_removal_delay_delta_minus1);
1658 if (hrd->nal_hrd_parameters_present_flag) {
1659 for (i = 0; i <= hrd->cpb_cnt_minus1[0]; i++) {
1660 length = hrd->initial_cpb_removal_delay_length_minus1 + 1;
1662 ubs(length, nal_initial_cpb_removal_delay[i], 1, i);
1663 ubs(length, nal_initial_cpb_removal_offset[i], 1, i);
1665 if (hrd->sub_pic_hrd_params_present_flag ||
1666 current->irap_cpb_params_present_flag) {
1667 ubs(length, nal_initial_alt_cpb_removal_delay[i], 1, i);
1668 ubs(length, nal_initial_alt_cpb_removal_offset[i], 1, i);
1672 if (hrd->vcl_hrd_parameters_present_flag) {
1673 for (i = 0; i <= hrd->cpb_cnt_minus1[0]; i++) {
1674 length = hrd->initial_cpb_removal_delay_length_minus1 + 1;
1676 ubs(length, vcl_initial_cpb_removal_delay[i], 1, i);
1677 ubs(length, vcl_initial_cpb_removal_offset[i], 1, i);
1679 if (hrd->sub_pic_hrd_params_present_flag ||
1680 current->irap_cpb_params_present_flag) {
1681 ubs(length, vcl_initial_alt_cpb_removal_delay[i], 1, i);
1682 ubs(length, vcl_initial_alt_cpb_removal_offset[i], 1, i);
1688 end_pos = get_bits_count(rw);
1689 if (cbs_h265_payload_extension_present(rw, sei->payload_size,
1690 end_pos - start_pos))
1691 flag(use_alt_cpb_params_flag);
1693 infer(use_alt_cpb_params_flag, 0);
1695 // If unknown extension data exists, then use_alt_cpb_params_flag is
1696 // coded in the bitstream and must be written even if it's 0.
1697 if (current->use_alt_cpb_params_flag || sei->extension_present) {
1698 flag(use_alt_cpb_params_flag);
1699 // Ensure this bit is not the last in the payload by making the
1700 // more_data_in_payload() check evaluate to true, so it may not
1701 // be mistaken as something else by decoders.
1702 sei->extension_present = 1;
1709 static int FUNC(sei_pic_timing)
1710 (CodedBitstreamContext *ctx, RWContext *rw,
1711 H265RawSEIPicTiming *current, SEIMessageState *sei)
1713 CodedBitstreamH265Context *h265 = ctx->priv_data;
1714 const H265RawSPS *sps;
1715 const H265RawHRDParameters *hrd;
1716 int err, expected_source_scan_type, i, length;
1718 HEADER("Picture Timing");
1720 sps = h265->active_sps;
1722 av_log(ctx->log_ctx, AV_LOG_ERROR,
1723 "No active SPS for pic_timing.\n");
1724 return AVERROR_INVALIDDATA;
1727 expected_source_scan_type = 2 -
1728 2 * sps->profile_tier_level.general_interlaced_source_flag -
1729 sps->profile_tier_level.general_progressive_source_flag;
1731 if (sps->vui.frame_field_info_present_flag) {
1732 u(4, pic_struct, 0, 12);
1733 u(2, source_scan_type,
1734 expected_source_scan_type >= 0 ? expected_source_scan_type : 0,
1735 expected_source_scan_type >= 0 ? expected_source_scan_type : 2);
1736 flag(duplicate_flag);
1738 infer(pic_struct, 0);
1739 infer(source_scan_type,
1740 expected_source_scan_type >= 0 ? expected_source_scan_type : 2);
1741 infer(duplicate_flag, 0);
1744 if (sps->vui_parameters_present_flag &&
1745 sps->vui.vui_hrd_parameters_present_flag)
1746 hrd = &sps->vui.hrd_parameters;
1749 if (hrd && (hrd->nal_hrd_parameters_present_flag ||
1750 hrd->vcl_hrd_parameters_present_flag)) {
1751 length = hrd->au_cpb_removal_delay_length_minus1 + 1;
1752 ub(length, au_cpb_removal_delay_minus1);
1754 length = hrd->dpb_output_delay_length_minus1 + 1;
1755 ub(length, pic_dpb_output_delay);
1757 if (hrd->sub_pic_hrd_params_present_flag) {
1758 length = hrd->dpb_output_delay_du_length_minus1 + 1;
1759 ub(length, pic_dpb_output_du_delay);
1762 if (hrd->sub_pic_hrd_params_present_flag &&
1763 hrd->sub_pic_cpb_params_in_pic_timing_sei_flag) {
1764 // Each decoding unit must contain at least one slice segment.
1765 ue(num_decoding_units_minus1, 0, HEVC_MAX_SLICE_SEGMENTS);
1766 flag(du_common_cpb_removal_delay_flag);
1768 length = hrd->du_cpb_removal_delay_increment_length_minus1 + 1;
1769 if (current->du_common_cpb_removal_delay_flag)
1770 ub(length, du_common_cpb_removal_delay_increment_minus1);
1772 for (i = 0; i <= current->num_decoding_units_minus1; i++) {
1773 ues(num_nalus_in_du_minus1[i],
1774 0, HEVC_MAX_SLICE_SEGMENTS, 1, i);
1775 if (!current->du_common_cpb_removal_delay_flag &&
1776 i < current->num_decoding_units_minus1)
1777 ubs(length, du_cpb_removal_delay_increment_minus1[i], 1, i);
1785 static int FUNC(sei_pan_scan_rect)
1786 (CodedBitstreamContext *ctx, RWContext *rw,
1787 H265RawSEIPanScanRect *current, SEIMessageState *sei)
1791 HEADER("Pan-Scan Rectangle");
1793 ue(pan_scan_rect_id, 0, UINT32_MAX - 1);
1794 flag(pan_scan_rect_cancel_flag);
1796 if (!current->pan_scan_rect_cancel_flag) {
1797 ue(pan_scan_cnt_minus1, 0, 2);
1799 for (i = 0; i <= current->pan_scan_cnt_minus1; i++) {
1800 ses(pan_scan_rect_left_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
1801 ses(pan_scan_rect_right_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
1802 ses(pan_scan_rect_top_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
1803 ses(pan_scan_rect_bottom_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
1806 flag(pan_scan_rect_persistence_flag);
1812 static int FUNC(sei_recovery_point)
1813 (CodedBitstreamContext *ctx, RWContext *rw,
1814 H265RawSEIRecoveryPoint *current, SEIMessageState *sei)
1818 HEADER("Recovery Point");
1820 se(recovery_poc_cnt, -32768, 32767);
1822 flag(exact_match_flag);
1823 flag(broken_link_flag);
1828 static int FUNC(sei_display_orientation)
1829 (CodedBitstreamContext *ctx, RWContext *rw,
1830 H265RawSEIDisplayOrientation *current, SEIMessageState *sei)
1834 HEADER("Display Orientation");
1836 flag(display_orientation_cancel_flag);
1837 if (!current->display_orientation_cancel_flag) {
1840 ub(16, anticlockwise_rotation);
1841 flag(display_orientation_persistence_flag);
1847 static int FUNC(sei_active_parameter_sets)
1848 (CodedBitstreamContext *ctx, RWContext *rw,
1849 H265RawSEIActiveParameterSets *current, SEIMessageState *sei)
1851 CodedBitstreamH265Context *h265 = ctx->priv_data;
1852 const H265RawVPS *vps;
1855 HEADER("Active Parameter Sets");
1857 u(4, active_video_parameter_set_id, 0, HEVC_MAX_VPS_COUNT);
1858 vps = h265->vps[current->active_video_parameter_set_id];
1860 av_log(ctx->log_ctx, AV_LOG_ERROR, "VPS id %d not available for active "
1861 "parameter sets.\n", current->active_video_parameter_set_id);
1862 return AVERROR_INVALIDDATA;
1864 h265->active_vps = vps;
1866 flag(self_contained_cvs_flag);
1867 flag(no_parameter_set_update_flag);
1869 ue(num_sps_ids_minus1, 0, HEVC_MAX_SPS_COUNT - 1);
1870 for (i = 0; i <= current->num_sps_ids_minus1; i++)
1871 ues(active_seq_parameter_set_id[i], 0, HEVC_MAX_SPS_COUNT - 1, 1, i);
1873 for (i = vps->vps_base_layer_internal_flag;
1874 i <= FFMIN(62, vps->vps_max_layers_minus1); i++) {
1875 ues(layer_sps_idx[i], 0, current->num_sps_ids_minus1, 1, i);
1878 h265->active_sps = h265->sps[current->active_seq_parameter_set_id[current->layer_sps_idx[0]]];
1884 static int FUNC(sei_decoded_picture_hash)
1885 (CodedBitstreamContext *ctx, RWContext *rw,
1886 H265RawSEIDecodedPictureHash *current, SEIMessageState *sei)
1888 CodedBitstreamH265Context *h265 = ctx->priv_data;
1889 const H265RawSPS *sps = h265->active_sps;
1892 HEADER("Decoded Picture Hash");
1895 av_log(ctx->log_ctx, AV_LOG_ERROR,
1896 "No active SPS for decoded picture hash.\n");
1897 return AVERROR_INVALIDDATA;
1900 u(8, hash_type, 0, 2);
1902 for (c = 0; c < (sps->chroma_format_idc == 0 ? 1 : 3); c++) {
1903 if (current->hash_type == 0) {
1904 for (i = 0; i < 16; i++)
1905 us(8, picture_md5[c][i], 0x00, 0xff, 2, c, i);
1906 } else if (current->hash_type == 1) {
1907 us(16, picture_crc[c], 0x0000, 0xffff, 1, c);
1908 } else if (current->hash_type == 2) {
1909 us(32, picture_checksum[c], 0x00000000, 0xffffffff, 1, c);
1916 static int FUNC(sei_time_code)
1917 (CodedBitstreamContext *ctx, RWContext *rw,
1918 H265RawSEITimeCode *current, SEIMessageState *sei)
1922 HEADER("Time Code");
1924 u(2, num_clock_ts, 1, 3);
1926 for (i = 0; i < current->num_clock_ts; i++) {
1927 flags(clock_timestamp_flag[i], 1, i);
1929 if (current->clock_timestamp_flag[i]) {
1930 flags(units_field_based_flag[i], 1, i);
1931 us(5, counting_type[i], 0, 6, 1, i);
1932 flags(full_timestamp_flag[i], 1, i);
1933 flags(discontinuity_flag[i], 1, i);
1934 flags(cnt_dropped_flag[i], 1, i);
1936 ubs(9, n_frames[i], 1, i);
1938 if (current->full_timestamp_flag[i]) {
1939 us(6, seconds_value[i], 0, 59, 1, i);
1940 us(6, minutes_value[i], 0, 59, 1, i);
1941 us(5, hours_value[i], 0, 23, 1, i);
1943 flags(seconds_flag[i], 1, i);
1944 if (current->seconds_flag[i]) {
1945 us(6, seconds_value[i], 0, 59, 1, i);
1946 flags(minutes_flag[i], 1, i);
1947 if (current->minutes_flag[i]) {
1948 us(6, minutes_value[i], 0, 59, 1, i);
1949 flags(hours_flag[i], 1, i);
1950 if (current->hours_flag[i])
1951 us(5, hours_value[i], 0, 23, 1, i);
1956 ubs(5, time_offset_length[i], 1, i);
1957 if (current->time_offset_length[i] > 0)
1958 ibs(current->time_offset_length[i], time_offset_value[i], 1, i);
1960 infer(time_offset_value[i], 0);
1967 static int FUNC(sei_alpha_channel_info)
1968 (CodedBitstreamContext *ctx, RWContext *rw,
1969 H265RawSEIAlphaChannelInfo *current, SEIMessageState *sei)
1973 HEADER("Alpha Channel Information");
1975 flag(alpha_channel_cancel_flag);
1976 if (!current->alpha_channel_cancel_flag) {
1977 ub(3, alpha_channel_use_idc);
1978 ub(3, alpha_channel_bit_depth_minus8);
1979 length = current->alpha_channel_bit_depth_minus8 + 9;
1980 ub(length, alpha_transparent_value);
1981 ub(length, alpha_opaque_value);
1982 flag(alpha_channel_incr_flag);
1983 flag(alpha_channel_clip_flag);
1984 if (current->alpha_channel_clip_flag)
1985 flag(alpha_channel_clip_type_flag);
1987 infer(alpha_channel_use_idc, 2);
1988 infer(alpha_channel_incr_flag, 0);
1989 infer(alpha_channel_clip_flag, 0);
1995 static int FUNC(sei)(CodedBitstreamContext *ctx, RWContext *rw,
1996 H265RawSEI *current, int prefix)
2001 HEADER("Prefix Supplemental Enhancement Information");
2003 HEADER("Suffix Supplemental Enhancement Information");
2005 CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header,
2006 prefix ? HEVC_NAL_SEI_PREFIX
2007 : HEVC_NAL_SEI_SUFFIX));
2009 CHECK(FUNC_SEI(message_list)(ctx, rw, ¤t->message_list, prefix));
2011 CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));