FFmpeg
cbs_h265_syntax_template.c
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 static int FUNC(rbsp_trailing_bits)(CodedBitstreamContext *ctx, RWContext *rw)
20 {
21  int err;
22 
23  fixed(1, rbsp_stop_one_bit, 1);
24  while (byte_alignment(rw) != 0)
25  fixed(1, rbsp_alignment_zero_bit, 0);
26 
27  return 0;
28 }
29 
30 static int FUNC(nal_unit_header)(CodedBitstreamContext *ctx, RWContext *rw,
31  H265RawNALUnitHeader *current,
32  int expected_nal_unit_type)
33 {
34  int err;
35 
36  fixed(1, forbidden_zero_bit, 0);
37 
38  if (expected_nal_unit_type >= 0)
39  u(6, nal_unit_type, expected_nal_unit_type,
40  expected_nal_unit_type);
41  else
42  ub(6, nal_unit_type);
43 
44  u(6, nuh_layer_id, 0, 62);
45  u(3, nuh_temporal_id_plus1, 1, 7);
46 
47  return 0;
48 }
49 
50 static int FUNC(byte_alignment)(CodedBitstreamContext *ctx, RWContext *rw)
51 {
52  int err;
53 
54  fixed(1, alignment_bit_equal_to_one, 1);
55  while (byte_alignment(rw) != 0)
56  fixed(1, alignment_bit_equal_to_zero, 0);
57 
58  return 0;
59 }
60 
61 static int FUNC(extension_data)(CodedBitstreamContext *ctx, RWContext *rw,
62  H265RawExtensionData *current)
63 {
64  int err;
65  size_t k;
66 #ifdef READ
67  GetBitContext start;
68  uint8_t bit;
69  start = *rw;
70  for (k = 0; cbs_h2645_read_more_rbsp_data(rw); k++)
71  skip_bits(rw, 1);
72  current->bit_length = k;
73  if (k > 0) {
74  *rw = start;
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);
79  }
80  }
81 #else
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);
84 #endif
85  return 0;
86 }
87 
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)
92 {
93  int err, i, j;
94 
95  if (profile_present_flag) {
96  u(2, general_profile_space, 0, 0);
97  flag(general_tier_flag);
98  ub(5, general_profile_idc);
99 
100  for (j = 0; j < 32; j++)
101  flags(general_profile_compatibility_flag[j], 1, j);
102 
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);
107 
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);
123 
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);
129  } else {
130  fixed(24, general_reserved_zero_34bits, 0);
131  fixed(10, general_reserved_zero_34bits, 0);
132  }
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);
138  } else {
139  fixed(24, general_reserved_zero_43bits, 0);
140  fixed(19, general_reserved_zero_43bits, 0);
141  }
142 
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);
147  } else {
148  fixed(1, general_reserved_zero_bit, 0);
149  }
150 #undef profile_compatible
151  }
152 
153  ub(8, general_level_idc);
154 
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);
158  }
159 
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);
163  }
164 
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);
170 
171  for (j = 0; j < 32; j++)
172  flags(sub_layer_profile_compatibility_flag[i][j], 2, i, j);
173 
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);
178 
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);
194 
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);
199  } else {
200  fixed(24, sub_layer_reserved_zero_34bits, 0);
201  fixed(10, sub_layer_reserved_zero_34bits, 0);
202  }
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);
208  } else {
209  fixed(24, sub_layer_reserved_zero_43bits, 0);
210  fixed(19, sub_layer_reserved_zero_43bits, 0);
211  }
212 
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);
217  } else {
218  fixed(1, sub_layer_reserved_zero_bit, 0);
219  }
220 #undef profile_compatible
221  }
222  if (current->sub_layer_level_present_flag[i])
223  ubs(8, sub_layer_level_idc[i], 1, i);
224  }
225 
226  return 0;
227 }
228 
229 static int FUNC(sub_layer_hrd_parameters)(CodedBitstreamContext *ctx, RWContext *rw,
230  H265RawHRDParameters *hrd,
231  int nal, int sub_layer_id)
232 {
233  H265RawSubLayerHRDParameters *current;
234  int err, i;
235 
236  if (nal)
237  current = &hrd->nal_sub_layer_hrd_parameters[sub_layer_id];
238  else
239  current = &hrd->vcl_sub_layer_hrd_parameters[sub_layer_id];
240 
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);
247  }
248  flags(cbr_flag[i], 1, i);
249  }
250 
251  return 0;
252 }
253 
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)
257 {
258  int err, i;
259 
260  if (common_inf_present_flag) {
261  flag(nal_hrd_parameters_present_flag);
262  flag(vcl_hrd_parameters_present_flag);
263 
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);
272  }
273 
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);
278 
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);
282  } else {
283  infer(sub_pic_hrd_params_present_flag, 0);
284 
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);
288  }
289  }
290 
291  for (i = 0; i <= max_num_sub_layers_minus1; i++) {
292  flags(fixed_pic_rate_general_flag[i], 1, i);
293 
294  if (!current->fixed_pic_rate_general_flag[i])
295  flags(fixed_pic_rate_within_cvs_flag[i], 1, i);
296  else
297  infer(fixed_pic_rate_within_cvs_flag[i], 1);
298 
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);
302  } else
303  flags(low_delay_hrd_flag[i], 1, i);
304 
305  if (!current->low_delay_hrd_flag[i])
306  ues(cpb_cnt_minus1[i], 0, 31, 1, i);
307  else
308  infer(cpb_cnt_minus1[i], 0);
309 
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));
314  }
315 
316  return 0;
317 }
318 
319 static int FUNC(vui_parameters)(CodedBitstreamContext *ctx, RWContext *rw,
320  H265RawVUI *current, const H265RawSPS *sps)
321 {
322  int err;
323 
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) {
328  ub(16, sar_width);
329  ub(16, sar_height);
330  }
331  } else {
332  infer(aspect_ratio_idc, 0);
333  }
334 
335  flag(overscan_info_present_flag);
336  if (current->overscan_info_present_flag)
337  flag(overscan_appropriate_flag);
338 
339  flag(video_signal_type_present_flag);
340  if (current->video_signal_type_present_flag) {
341  ub(3, video_format);
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);
348  } else {
349  infer(colour_primaries, 2);
350  infer(transfer_characteristics, 2);
351  infer(matrix_coefficients, 2);
352  }
353  } else {
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);
359  }
360 
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);
365  } else {
366  infer(chroma_sample_loc_type_top_field, 0);
367  infer(chroma_sample_loc_type_bottom_field, 0);
368  }
369 
370  flag(neutral_chroma_indication_flag);
371  flag(field_seq_flag);
372  flag(frame_field_info_present_flag);
373 
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);
380  }
381 
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);
389 
390  flag(vui_hrd_parameters_present_flag);
391  if (current->vui_hrd_parameters_present_flag) {
392  CHECK(FUNC(hrd_parameters)(ctx, rw, &current->hrd_parameters,
393  1, sps->sps_max_sub_layers_minus1));
394  }
395  }
396 
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);
407  } else {
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);
415  }
416 
417  return 0;
418 }
419 
420 static int FUNC(vps)(CodedBitstreamContext *ctx, RWContext *rw,
421  H265RawVPS *current)
422 {
423  int err, i, j;
424 
425  HEADER("Video Parameter Set");
426 
427  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header, HEVC_NAL_VPS));
428 
429  ub(4, vps_video_parameter_set_id);
430 
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);
436 
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;
443  }
444 
445  fixed(16, vps_reserved_0xffff_16bits, 0xffff);
446 
447  CHECK(FUNC(profile_tier_level)(ctx, rw, &current->profile_tier_level,
448  1, current->vps_max_sub_layers_minus1));
449 
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);
460  }
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]);
469  }
470  }
471 
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);
477  }
478  for (j = 0; j <= current->vps_max_layer_id; j++)
479  infer(layer_id_included_flag[0][j], j == 0);
480 
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);
493  if (i > 0)
494  flags(cprms_present_flag[i], 1, i);
495  else
496  infer(cprms_present_flag[0], 1);
497 
498  CHECK(FUNC(hrd_parameters)(ctx, rw, &current->hrd_parameters[i],
499  current->cprms_present_flag[i],
500  current->vps_max_sub_layers_minus1));
501  }
502  }
503 
504  flag(vps_extension_flag);
505  if (current->vps_extension_flag)
506  CHECK(FUNC(extension_data)(ctx, rw, &current->extension_data));
507 
508  CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
509 
510  return 0;
511 }
512 
513 static int FUNC(st_ref_pic_set)(CodedBitstreamContext *ctx, RWContext *rw,
514  H265RawSTRefPicSet *current, int st_rps_idx,
515  const H265RawSPS *sps)
516 {
517  int err, i, j;
518 
519  if (st_rps_idx != 0)
520  flag(inter_ref_pic_set_prediction_flag);
521  else
522  infer(inter_ref_pic_set_prediction_flag, 0);
523 
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];
532 
533  if (st_rps_idx == sps->num_short_term_ref_pic_sets)
534  ue(delta_idx_minus1, 0, st_rps_idx - 1);
535  else
536  infer(delta_idx_minus1, 0);
537 
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);
542 
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);
547 
548  num_ref_pics = 0;
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);
553  else
554  infer(use_delta_flag[j], 1);
555  if (current->use_delta_flag[j])
556  ++num_ref_pics;
557  }
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;
563  }
564 
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.
580 
581  d_poc = 0;
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;
585  }
586  d_poc = 0;
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;
590  }
591 
592  i = 0;
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];
599  }
600  }
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];
605  }
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];
611  }
612  }
613 
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]);
619  }
620 
621  i = 0;
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];
627  }
628  }
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];
633  }
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];
640  }
641  }
642 
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]);
648  }
649 
650  } else {
651  ue(num_negative_pics, 0, 15);
652  ue(num_positive_pics, 0, 15 - current->num_negative_pics);
653 
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);
657  }
658 
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);
662  }
663  }
664 
665  return 0;
666 }
667 
668 static int FUNC(scaling_list_data)(CodedBitstreamContext *ctx, RWContext *rw,
669  H265RawScalingList *current)
670 {
671  int sizeId, matrixId;
672  int err, n, i;
673 
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);
682  } else {
683  n = FFMIN(64, 1 << (4 + (sizeId << 1)));
684  if (sizeId > 1) {
685  ses(scaling_list_dc_coef_minus8[sizeId - 2][matrixId], -7, +247,
686  2, sizeId - 2, matrixId);
687  }
688  for (i = 0; i < n; i++) {
689  ses(scaling_list_delta_coeff[sizeId][matrixId][i],
690  -128, +127, 3, sizeId, matrixId, i);
691  }
692  }
693  }
694  }
695 
696  return 0;
697 }
698 
699 static int FUNC(sps_range_extension)(CodedBitstreamContext *ctx, RWContext *rw,
700  H265RawSPS *current)
701 {
702  int err;
703 
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);
713 
714  return 0;
715 }
716 
717 static int FUNC(sps_scc_extension)(CodedBitstreamContext *ctx, RWContext *rw,
718  H265RawSPS *current)
719 {
720  int err, comp, i;
721 
722  flag(sps_curr_pic_ref_enabled_flag);
723 
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);
728 
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);
737  }
738  }
739  }
740 
741  u(2, motion_vector_resolution_control_idc, 0, 2);
742  flag(intra_boundary_filtering_disable_flag);
743 
744  return 0;
745 }
746 
747 static int FUNC(vui_parameters_default)(CodedBitstreamContext *ctx,
748  RWContext *rw, H265RawVUI *current,
749  H265RawSPS *sps)
750 {
751  infer(aspect_ratio_idc, 0);
752 
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);
758 
759  infer(chroma_sample_loc_type_top_field, 0);
760  infer(chroma_sample_loc_type_bottom_field, 0);
761 
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);
769 
770  return 0;
771 }
772 
773 static int FUNC(sps)(CodedBitstreamContext *ctx, RWContext *rw,
774  H265RawSPS *current)
775 {
776  CodedBitstreamH265Context *h265 = ctx->priv_data;
777  const H265RawVPS *vps;
778  int err, i;
779  unsigned int min_cb_log2_size_y, ctb_log2_size_y,
780  min_cb_size_y, min_tb_log2_size_y;
781 
782  HEADER("Sequence Parameter Set");
783 
784  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header, HEVC_NAL_SPS));
785 
786  ub(4, sps_video_parameter_set_id);
787  h265->active_vps = vps = h265->vps[current->sps_video_parameter_set_id];
788 
789  u(3, sps_max_sub_layers_minus1, 0, HEVC_MAX_SUB_LAYERS - 1);
790  flag(sps_temporal_id_nesting_flag);
791  if (vps) {
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;
799  }
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;
806  }
807  }
808 
809  CHECK(FUNC(profile_tier_level)(ctx, rw, &current->profile_tier_level,
810  1, current->sps_max_sub_layers_minus1));
811 
812  ue(sps_seq_parameter_set_id, 0, 15);
813 
814  ue(chroma_format_idc, 0, 3);
815  if (current->chroma_format_idc == 3)
816  flag(separate_colour_plane_flag);
817  else
818  infer(separate_colour_plane_flag, 0);
819 
820  ue(pic_width_in_luma_samples, 1, HEVC_MAX_WIDTH);
821  ue(pic_height_in_luma_samples, 1, HEVC_MAX_HEIGHT);
822 
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);
829  } else {
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);
834  }
835 
836  ue(bit_depth_luma_minus8, 0, 8);
837  ue(bit_depth_chroma_minus8, 0, 8);
838 
839  ue(log2_max_pic_order_cnt_lsb_minus4, 0, 12);
840 
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);
851  }
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]);
860  }
861  }
862 
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;
865 
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;
869 
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;
877  }
878 
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;
881 
882  ue(log2_diff_max_min_luma_transform_block_size,
883  0, FFMIN(ctb_log2_size_y, 5) - min_tb_log2_size_y);
884 
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);
889 
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, &current->scaling_list));
895  } else {
896  infer(sps_scaling_list_data_present_flag, 0);
897  }
898 
899  flag(amp_enabled_flag);
900  flag(sample_adaptive_offset_enabled_flag);
901 
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);
908 
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));
913 
914  flag(pcm_loop_filter_disabled_flag);
915  }
916 
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, &current->st_ref_pic_set[i], i, current));
920 
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);
928  }
929  }
930 
931  flag(sps_temporal_mvp_enabled_flag);
932  flag(strong_intra_smoothing_enabled_flag);
933 
934  flag(vui_parameters_present_flag);
935  if (current->vui_parameters_present_flag)
936  CHECK(FUNC(vui_parameters)(ctx, rw, &current->vui, current));
937  else
938  CHECK(FUNC(vui_parameters_default)(ctx, rw, &current->vui, current));
939 
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);
947  }
948 
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, &current->extension_data));
959 
960  CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
961 
962  return 0;
963 }
964 
965 static int FUNC(pps_range_extension)(CodedBitstreamContext *ctx, RWContext *rw,
966  H265RawPPS *current)
967 {
968  CodedBitstreamH265Context *h265 = ctx->priv_data;
969  const H265RawSPS *sps = h265->active_sps;
970  int err, i;
971 
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);
975 
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);
984  }
985  }
986 
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));
989 
990  return 0;
991 }
992 
993 static int FUNC(pps_scc_extension)(CodedBitstreamContext *ctx, RWContext *rw,
994  H265RawPPS *current)
995 {
996  int err, comp, i;
997 
998  flag(pps_curr_pic_ref_enabled_flag);
999 
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);
1006  } else {
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);
1011  }
1012 
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);
1026  }
1027  }
1028  }
1029 
1030  return 0;
1031 }
1032 
1033 static int FUNC(pps)(CodedBitstreamContext *ctx, RWContext *rw,
1034  H265RawPPS *current)
1035 {
1036  CodedBitstreamH265Context *h265 = ctx->priv_data;
1037  const H265RawSPS *sps;
1038  int err, i;
1039 
1040  HEADER("Picture Parameter Set");
1041 
1042  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header, HEVC_NAL_PPS));
1043 
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];
1047  if (!sps) {
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;
1051  }
1052  h265->active_sps = sps;
1053 
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);
1059 
1060  ue(num_ref_idx_l0_default_active_minus1, 0, 14);
1061  ue(num_ref_idx_l1_default_active_minus1, 0, 14);
1062 
1063  se(init_qp_minus26, -(26 + 6 * sps->bit_depth_luma_minus8), +25);
1064 
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);
1071  else
1072  infer(diff_cu_qp_delta_depth, 0);
1073 
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);
1077 
1078  flag(weighted_pred_flag);
1079  flag(weighted_bipred_flag);
1080 
1081  flag(transquant_bypass_enabled_flag);
1082  flag(tiles_enabled_flag);
1083  flag(entropy_coding_sync_enabled_flag);
1084 
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);
1094  }
1095  flag(loop_filter_across_tiles_enabled_flag);
1096  } else {
1097  infer(num_tile_columns_minus1, 0);
1098  infer(num_tile_rows_minus1, 0);
1099  }
1100 
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);
1109  } else {
1110  infer(pps_beta_offset_div2, 0);
1111  infer(pps_tc_offset_div2, 0);
1112  }
1113  } else {
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);
1118  }
1119 
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, &current->scaling_list));
1123 
1124  flag(lists_modification_present_flag);
1125 
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));
1129 
1130  flag(slice_segment_header_extension_present_flag);
1131 
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);
1139  }
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, &current->extension_data));
1150 
1151  CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
1152 
1153  return 0;
1154 }
1155 
1156 static int FUNC(aud)(CodedBitstreamContext *ctx, RWContext *rw,
1157  H265RawAUD *current)
1158 {
1159  int err;
1160 
1161  HEADER("Access Unit Delimiter");
1162 
1163  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header, HEVC_NAL_AUD));
1164 
1165  u(3, pic_type, 0, 2);
1166 
1167  CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
1168 
1169  return 0;
1170 }
1171 
1172 static int FUNC(ref_pic_lists_modification)(CodedBitstreamContext *ctx, RWContext *rw,
1173  H265RawSliceHeader *current,
1174  unsigned int num_pic_total_curr)
1175 {
1176  unsigned int entry_size;
1177  int err, i;
1178 
1179  entry_size = av_log2(num_pic_total_curr - 1) + 1;
1180 
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);
1185  }
1186 
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);
1192  }
1193  }
1194 
1195  return 0;
1196 }
1197 
1198 static int FUNC(pred_weight_table)(CodedBitstreamContext *ctx, RWContext *rw,
1199  H265RawSliceHeader *current)
1200 {
1201  CodedBitstreamH265Context *h265 = ctx->priv_data;
1202  const H265RawSPS *sps = h265->active_sps;
1203  int err, i, j;
1204  int chroma = !sps->separate_colour_plane_flag &&
1205  sps->chroma_format_idc != 0;
1206 
1207  ue(luma_log2_weight_denom, 0, 7);
1208  if (chroma)
1209  se(delta_chroma_log2_weight_denom, -7, 7);
1210  else
1211  infer(delta_chroma_log2_weight_denom, 0);
1212 
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);
1216  else
1217  infer(luma_weight_l0_flag[i], 0);
1218  }
1219  if (chroma) {
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);
1223  else
1224  infer(chroma_weight_l0_flag[i], 0);
1225  }
1226  }
1227 
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);
1234  } else {
1235  infer(delta_luma_weight_l0[i], 0);
1236  infer(luma_offset_l0[i], 0);
1237  }
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);
1244  }
1245  } else {
1246  for (j = 0; j < 2; j++) {
1247  infer(delta_chroma_weight_l0[i][j], 0);
1248  infer(chroma_offset_l0[i][j], 0);
1249  }
1250  }
1251  }
1252 
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);
1257  else
1258  infer(luma_weight_l1_flag[i], 0);
1259  }
1260  if (chroma) {
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);
1264  else
1265  infer(chroma_weight_l1_flag[i], 0);
1266  }
1267  }
1268 
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);
1275  } else {
1276  infer(delta_luma_weight_l1[i], 0);
1277  infer(luma_offset_l1[i], 0);
1278  }
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);
1285  }
1286  } else {
1287  for (j = 0; j < 2; j++) {
1288  infer(delta_chroma_weight_l1[i][j], 0);
1289  infer(chroma_offset_l1[i][j], 0);
1290  }
1291  }
1292  }
1293  }
1294 
1295  return 0;
1296 }
1297 
1298 static int FUNC(slice_segment_header)(CodedBitstreamContext *ctx, RWContext *rw,
1299  H265RawSliceHeader *current)
1300 {
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;
1307  int err, i;
1308 
1309  HEADER("Slice Segment Header");
1310 
1311  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header, -1));
1312 
1313  flag(first_slice_segment_in_pic_flag);
1314 
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);
1318 
1319  ue(slice_pic_parameter_set_id, 0, 63);
1320 
1321  pps = h265->pps[current->slice_pic_parameter_set_id];
1322  if (!pps) {
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;
1326  }
1327  h265->active_pps = pps;
1328 
1329  sps = h265->sps[pps->pps_seq_parameter_set_id];
1330  if (!sps) {
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;
1334  }
1335  h265->active_sps = sps;
1336 
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;
1345 
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);
1350  else
1351  infer(dependent_slice_segment_flag, 0);
1352  u(address_size, slice_segment_address, 0, pic_size_in_ctbs_y - 1);
1353  } else {
1354  infer(dependent_slice_segment_flag, 0);
1355  }
1356 
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);
1360 
1361  ue(slice_type, 0, 2);
1362 
1363  if (pps->output_flag_present_flag)
1364  flag(pic_output_flag);
1365 
1366  if (sps->separate_colour_plane_flag)
1367  u(2, colour_plane_id, 0, 2);
1368 
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;
1372 
1373  ub(sps->log2_max_pic_order_cnt_lsb_minus4 + 4, slice_pic_order_cnt_lsb);
1374 
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, &current->short_term_ref_pic_set,
1378  sps->num_short_term_ref_pic_sets, sps));
1379  rps = &current->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];
1385  } else {
1386  infer(short_term_ref_pic_set_idx, 0);
1387  rps = &sps->st_ref_pic_set[0];
1388  }
1389 
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;
1397 
1398  if (sps->long_term_ref_pics_present_flag) {
1399  unsigned int idx_size;
1400 
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;
1404  } else {
1405  infer(num_long_term_sps, 0);
1406  idx_size = 0;
1407  }
1408  ue(num_long_term_pics, 0, HEVC_MAX_REFS - current->num_long_term_sps);
1409 
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;
1418  } else {
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;
1423  }
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);
1427  else
1428  infer(delta_poc_msb_cycle_lt[i], 0);
1429  }
1430  }
1431 
1432  if (sps->sps_temporal_mvp_enabled_flag)
1433  flag(slice_temporal_mvp_enabled_flag);
1434  else
1435  infer(slice_temporal_mvp_enabled_flag, 0);
1436 
1437  if (pps->pps_curr_pic_ref_enabled_flag)
1438  ++num_pic_total_curr;
1439  }
1440 
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);
1445  else
1446  infer(slice_sao_chroma_flag, 0);
1447  } else {
1448  infer(slice_sao_luma_flag, 0);
1449  infer(slice_sao_chroma_flag, 0);
1450  }
1451 
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);
1459  else
1460  infer(num_ref_idx_l1_active_minus1, pps->num_ref_idx_l1_default_active_minus1);
1461  } else {
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);
1464  }
1465 
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));
1469 
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);
1474  else
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);
1479  else
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);
1484  else
1485  infer(collocated_ref_idx, 0);
1486  } else {
1487  if (current->num_ref_idx_l1_active_minus1 > 0)
1488  ue(collocated_ref_idx, 0, current->num_ref_idx_l1_active_minus1);
1489  else
1490  infer(collocated_ref_idx, 0);
1491  }
1492  }
1493 
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));
1497 
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);
1501  else
1502  infer(use_integer_mv_flag, sps->motion_vector_resolution_control_idc);
1503  }
1504 
1505  se(slice_qp_delta,
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);
1511  } else {
1512  infer(slice_cb_qp_offset, 0);
1513  infer(slice_cr_qp_offset, 0);
1514  }
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));
1525  } else {
1526  infer(slice_act_y_qp_offset, 0);
1527  infer(slice_act_cb_qp_offset, 0);
1528  infer(slice_act_cr_qp_offset, 0);
1529  }
1530  if (pps->chroma_qp_offset_list_enabled_flag)
1531  flag(cu_chroma_qp_offset_enabled_flag);
1532  else
1533  infer(cu_chroma_qp_offset_enabled_flag, 0);
1534 
1535  if (pps->deblocking_filter_override_enabled_flag)
1536  flag(deblocking_filter_override_flag);
1537  else
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);
1544  } else {
1545  infer(slice_beta_offset_div2, pps->pps_beta_offset_div2);
1546  infer(slice_tc_offset_div2, pps->pps_tc_offset_div2);
1547  }
1548  } else {
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);
1553  }
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);
1558  else
1559  infer(slice_loop_filter_across_slices_enabled_flag,
1560  pps->pps_loop_filter_across_slices_enabled_flag);
1561  }
1562 
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);
1570  else
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);
1574 
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;
1579  }
1580 
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);
1585  }
1586  }
1587 
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);
1592  }
1593 
1594  CHECK(FUNC(byte_alignment)(ctx, rw));
1595 
1596  return 0;
1597 }
1598 
1599 static int FUNC(sei_buffering_period)(CodedBitstreamContext *ctx, RWContext *rw,
1600  H265RawSEIBufferingPeriod *current,
1601  uint32_t *payload_size,
1602  int *more_data)
1603 {
1604  CodedBitstreamH265Context *h265 = ctx->priv_data;
1605  const H265RawSPS *sps;
1606  const H265RawHRDParameters *hrd;
1607  int err, i, length;
1608 
1609 #ifdef READ
1610  int start_pos, end_pos;
1611  start_pos = get_bits_count(rw);
1612 #endif
1613 
1614  HEADER("Buffering Period");
1615 
1616  ue(bp_seq_parameter_set_id, 0, HEVC_MAX_SPS_COUNT - 1);
1617 
1618  sps = h265->sps[current->bp_seq_parameter_set_id];
1619  if (!sps) {
1620  av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n",
1621  current->bp_seq_parameter_set_id);
1622  return AVERROR_INVALIDDATA;
1623  }
1624  h265->active_sps = sps;
1625 
1626  if (!sps->vui_parameters_present_flag ||
1627  !sps->vui.vui_hrd_parameters_present_flag) {
1628  av_log(ctx->log_ctx, AV_LOG_ERROR, "Buffering period SEI requires "
1629  "HRD parameters to be present in SPS.\n");
1630  return AVERROR_INVALIDDATA;
1631  }
1632  hrd = &sps->vui.hrd_parameters;
1633  if (!hrd->nal_hrd_parameters_present_flag &&
1634  !hrd->vcl_hrd_parameters_present_flag) {
1635  av_log(ctx->log_ctx, AV_LOG_ERROR, "Buffering period SEI requires "
1636  "NAL or VCL HRD parameters to be present.\n");
1637  return AVERROR_INVALIDDATA;
1638  }
1639 
1640  if (!hrd->sub_pic_hrd_params_present_flag)
1641  flag(irap_cpb_params_present_flag);
1642  else
1643  infer(irap_cpb_params_present_flag, 0);
1644  if (current->irap_cpb_params_present_flag) {
1645  length = hrd->au_cpb_removal_delay_length_minus1 + 1;
1646  ub(length, cpb_delay_offset);
1647  length = hrd->dpb_output_delay_length_minus1 + 1;
1648  ub(length, dpb_delay_offset);
1649  } else {
1650  infer(cpb_delay_offset, 0);
1651  infer(dpb_delay_offset, 0);
1652  }
1653 
1654  flag(concatenation_flag);
1655 
1656  length = hrd->au_cpb_removal_delay_length_minus1 + 1;
1657  ub(length, au_cpb_removal_delay_delta_minus1);
1658 
1659  if (hrd->nal_hrd_parameters_present_flag) {
1660  for (i = 0; i <= hrd->cpb_cnt_minus1[0]; i++) {
1661  length = hrd->initial_cpb_removal_delay_length_minus1 + 1;
1662 
1663  ubs(length, nal_initial_cpb_removal_delay[i], 1, i);
1664  ubs(length, nal_initial_cpb_removal_offset[i], 1, i);
1665 
1666  if (hrd->sub_pic_hrd_params_present_flag ||
1667  current->irap_cpb_params_present_flag) {
1668  ubs(length, nal_initial_alt_cpb_removal_delay[i], 1, i);
1669  ubs(length, nal_initial_alt_cpb_removal_offset[i], 1, i);
1670  }
1671  }
1672  }
1673  if (hrd->vcl_hrd_parameters_present_flag) {
1674  for (i = 0; i <= hrd->cpb_cnt_minus1[0]; i++) {
1675  length = hrd->initial_cpb_removal_delay_length_minus1 + 1;
1676 
1677  ubs(length, vcl_initial_cpb_removal_delay[i], 1, i);
1678  ubs(length, vcl_initial_cpb_removal_offset[i], 1, i);
1679 
1680  if (hrd->sub_pic_hrd_params_present_flag ||
1681  current->irap_cpb_params_present_flag) {
1682  ubs(length, vcl_initial_alt_cpb_removal_delay[i], 1, i);
1683  ubs(length, vcl_initial_alt_cpb_removal_offset[i], 1, i);
1684  }
1685  }
1686  }
1687 
1688 #ifdef READ
1689  end_pos = get_bits_count(rw);
1690  if (cbs_h265_payload_extension_present(rw, *payload_size,
1691  end_pos - start_pos))
1692  flag(use_alt_cpb_params_flag);
1693  else
1694  infer(use_alt_cpb_params_flag, 0);
1695 #else
1696  // If unknown extension data exists, then use_alt_cpb_params_flag is
1697  // coded in the bitstream and must be written even if it's 0.
1698  if (current->use_alt_cpb_params_flag || *more_data) {
1699  flag(use_alt_cpb_params_flag);
1700  // Ensure this bit is not the last in the payload by making the
1701  // more_data_in_payload() check evaluate to true, so it may not
1702  // be mistaken as something else by decoders.
1703  *more_data = 1;
1704  }
1705 #endif
1706 
1707  return 0;
1708 }
1709 
1710 static int FUNC(sei_pic_timing)(CodedBitstreamContext *ctx, RWContext *rw,
1711  H265RawSEIPicTiming *current)
1712 {
1713  CodedBitstreamH265Context *h265 = ctx->priv_data;
1714  const H265RawSPS *sps;
1715  const H265RawHRDParameters *hrd;
1716  int err, expected_source_scan_type, i, length;
1717 
1718  HEADER("Picture Timing");
1719 
1720  sps = h265->active_sps;
1721  if (!sps) {
1722  av_log(ctx->log_ctx, AV_LOG_ERROR,
1723  "No active SPS for pic_timing.\n");
1724  return AVERROR_INVALIDDATA;
1725  }
1726 
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;
1730 
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);
1737  } else {
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);
1742  }
1743 
1744  if (sps->vui_parameters_present_flag &&
1745  sps->vui.vui_hrd_parameters_present_flag)
1746  hrd = &sps->vui.hrd_parameters;
1747  else
1748  hrd = NULL;
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);
1753 
1754  length = hrd->dpb_output_delay_length_minus1 + 1;
1755  ub(length, pic_dpb_output_delay);
1756 
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);
1760  }
1761 
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);
1767 
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);
1771 
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);
1778  }
1779  }
1780  }
1781 
1782  return 0;
1783 }
1784 
1785 static int FUNC(sei_pan_scan_rect)(CodedBitstreamContext *ctx, RWContext *rw,
1786  H265RawSEIPanScanRect *current)
1787 {
1788  int err, i;
1789 
1790  HEADER("Pan-Scan Rectangle");
1791 
1792  ue(pan_scan_rect_id, 0, UINT32_MAX - 1);
1793  flag(pan_scan_rect_cancel_flag);
1794 
1795  if (!current->pan_scan_rect_cancel_flag) {
1796  ue(pan_scan_cnt_minus1, 0, 2);
1797 
1798  for (i = 0; i <= current->pan_scan_cnt_minus1; i++) {
1799  ses(pan_scan_rect_left_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
1800  ses(pan_scan_rect_right_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
1801  ses(pan_scan_rect_top_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
1802  ses(pan_scan_rect_bottom_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
1803  }
1804 
1805  flag(pan_scan_rect_persistence_flag);
1806  }
1807 
1808  return 0;
1809 }
1810 
1811 static int FUNC(sei_user_data_registered)(CodedBitstreamContext *ctx, RWContext *rw,
1812  H265RawSEIUserDataRegistered *current,
1813  uint32_t *payload_size)
1814 {
1815  int err, i, j;
1816 
1817  HEADER("User Data Registered ITU-T T.35");
1818 
1819  u(8, itu_t_t35_country_code, 0x00, 0xff);
1820  if (current->itu_t_t35_country_code != 0xff)
1821  i = 1;
1822  else {
1823  u(8, itu_t_t35_country_code_extension_byte, 0x00, 0xff);
1824  i = 2;
1825  }
1826 
1827 #ifdef READ
1828  if (*payload_size < i) {
1829  av_log(ctx->log_ctx, AV_LOG_ERROR,
1830  "Invalid SEI user data registered payload.\n");
1831  return AVERROR_INVALIDDATA;
1832  }
1833  current->data_length = *payload_size - i;
1834 #else
1835  *payload_size = i + current->data_length;
1836 #endif
1837 
1838  allocate(current->data, current->data_length);
1839  for (j = 0; j < current->data_length; j++)
1840  xu(8, itu_t_t35_payload_byte[i], current->data[j], 0x00, 0xff, 1, i + j);
1841 
1842  return 0;
1843 }
1844 
1845 static int FUNC(sei_user_data_unregistered)(CodedBitstreamContext *ctx, RWContext *rw,
1846  H265RawSEIUserDataUnregistered *current,
1847  uint32_t *payload_size)
1848 {
1849  int err, i;
1850 
1851  HEADER("User Data Unregistered");
1852 
1853 #ifdef READ
1854  if (*payload_size < 16) {
1855  av_log(ctx->log_ctx, AV_LOG_ERROR,
1856  "Invalid SEI user data unregistered payload.\n");
1857  return AVERROR_INVALIDDATA;
1858  }
1859  current->data_length = *payload_size - 16;
1860 #else
1861  *payload_size = 16 + current->data_length;
1862 #endif
1863 
1864  for (i = 0; i < 16; i++)
1865  us(8, uuid_iso_iec_11578[i], 0x00, 0xff, 1, i);
1866 
1867  allocate(current->data, current->data_length);
1868 
1869  for (i = 0; i < current->data_length; i++)
1870  xu(8, user_data_payload_byte[i], current->data[i], 0x00, 0xff, 1, i);
1871 
1872  return 0;
1873 }
1874 
1875 static int FUNC(sei_recovery_point)(CodedBitstreamContext *ctx, RWContext *rw,
1876  H265RawSEIRecoveryPoint *current)
1877 {
1878  int err;
1879 
1880  HEADER("Recovery Point");
1881 
1882  se(recovery_poc_cnt, -32768, 32767);
1883 
1884  flag(exact_match_flag);
1885  flag(broken_link_flag);
1886 
1887  return 0;
1888 }
1889 
1890 static int FUNC(sei_display_orientation)(CodedBitstreamContext *ctx, RWContext *rw,
1891  H265RawSEIDisplayOrientation *current)
1892 {
1893  int err;
1894 
1895  HEADER("Display Orientation");
1896 
1897  flag(display_orientation_cancel_flag);
1898  if (!current->display_orientation_cancel_flag) {
1899  flag(hor_flip);
1900  flag(ver_flip);
1901  ub(16, anticlockwise_rotation);
1902  flag(display_orientation_persistence_flag);
1903  }
1904 
1905  return 0;
1906 }
1907 
1908 static int FUNC(sei_active_parameter_sets)(CodedBitstreamContext *ctx, RWContext *rw,
1909  H265RawSEIActiveParameterSets *current)
1910 {
1911  CodedBitstreamH265Context *h265 = ctx->priv_data;
1912  const H265RawVPS *vps;
1913  int err, i;
1914 
1915  HEADER("Active Parameter Sets");
1916 
1917  u(4, active_video_parameter_set_id, 0, HEVC_MAX_VPS_COUNT);
1918  vps = h265->vps[current->active_video_parameter_set_id];
1919  if (!vps) {
1920  av_log(ctx->log_ctx, AV_LOG_ERROR, "VPS id %d not available for active "
1921  "parameter sets.\n", current->active_video_parameter_set_id);
1922  return AVERROR_INVALIDDATA;
1923  }
1924  h265->active_vps = vps;
1925 
1926  flag(self_contained_cvs_flag);
1927  flag(no_parameter_set_update_flag);
1928 
1929  ue(num_sps_ids_minus1, 0, HEVC_MAX_SPS_COUNT - 1);
1930  for (i = 0; i <= current->num_sps_ids_minus1; i++)
1931  ues(active_seq_parameter_set_id[i], 0, HEVC_MAX_SPS_COUNT - 1, 1, i);
1932 
1933  for (i = vps->vps_base_layer_internal_flag;
1934  i <= FFMIN(62, vps->vps_max_layers_minus1); i++) {
1935  ues(layer_sps_idx[i], 0, current->num_sps_ids_minus1, 1, i);
1936 
1937  if (i == 0)
1938  h265->active_sps = h265->sps[current->active_seq_parameter_set_id[current->layer_sps_idx[0]]];
1939  }
1940 
1941  return 0;
1942 }
1943 
1944 static int FUNC(sei_decoded_picture_hash)(CodedBitstreamContext *ctx, RWContext *rw,
1945  H265RawSEIDecodedPictureHash *current)
1946 {
1947  CodedBitstreamH265Context *h265 = ctx->priv_data;
1948  const H265RawSPS *sps = h265->active_sps;
1949  int err, c, i;
1950 
1951  HEADER("Decoded Picture Hash");
1952 
1953  if (!sps) {
1954  av_log(ctx->log_ctx, AV_LOG_ERROR,
1955  "No active SPS for decoded picture hash.\n");
1956  return AVERROR_INVALIDDATA;
1957  }
1958 
1959  u(8, hash_type, 0, 2);
1960 
1961  for (c = 0; c < (sps->chroma_format_idc == 0 ? 1 : 3); c++) {
1962  if (current->hash_type == 0) {
1963  for (i = 0; i < 16; i++)
1964  us(8, picture_md5[c][i], 0x00, 0xff, 2, c, i);
1965  } else if (current->hash_type == 1) {
1966  us(16, picture_crc[c], 0x0000, 0xffff, 1, c);
1967  } else if (current->hash_type == 2) {
1968  us(32, picture_checksum[c], 0x00000000, 0xffffffff, 1, c);
1969  }
1970  }
1971 
1972  return 0;
1973 }
1974 
1975 static int FUNC(sei_time_code)(CodedBitstreamContext *ctx, RWContext *rw,
1976  H265RawSEITimeCode *current)
1977 {
1978  int err, i;
1979 
1980  HEADER("Time Code");
1981 
1982  u(2, num_clock_ts, 1, 3);
1983 
1984  for (i = 0; i < current->num_clock_ts; i++) {
1985  flags(clock_timestamp_flag[i], 1, i);
1986 
1987  if (current->clock_timestamp_flag[i]) {
1988  flags(units_field_based_flag[i], 1, i);
1989  us(5, counting_type[i], 0, 6, 1, i);
1990  flags(full_timestamp_flag[i], 1, i);
1991  flags(discontinuity_flag[i], 1, i);
1992  flags(cnt_dropped_flag[i], 1, i);
1993 
1994  ubs(9, n_frames[i], 1, i);
1995 
1996  if (current->full_timestamp_flag[i]) {
1997  us(6, seconds_value[i], 0, 59, 1, i);
1998  us(6, minutes_value[i], 0, 59, 1, i);
1999  us(5, hours_value[i], 0, 23, 1, i);
2000  } else {
2001  flags(seconds_flag[i], 1, i);
2002  if (current->seconds_flag[i]) {
2003  us(6, seconds_value[i], 0, 59, 1, i);
2004  flags(minutes_flag[i], 1, i);
2005  if (current->minutes_flag[i]) {
2006  us(6, minutes_value[i], 0, 59, 1, i);
2007  flags(hours_flag[i], 1, i);
2008  if (current->hours_flag[i])
2009  us(5, hours_value[i], 0, 23, 1, i);
2010  }
2011  }
2012  }
2013 
2014  ubs(5, time_offset_length[i], 1, i);
2015  if (current->time_offset_length[i] > 0)
2016  ibs(current->time_offset_length[i], time_offset_value[i], 1, i);
2017  else
2018  infer(time_offset_value[i], 0);
2019  }
2020  }
2021 
2022  return 0;
2023 }
2024 
2025 static int FUNC(sei_mastering_display)(CodedBitstreamContext *ctx, RWContext *rw,
2026  H265RawSEIMasteringDisplayColourVolume *current)
2027 {
2028  int err, c;
2029 
2030  HEADER("Mastering Display Colour Volume");
2031 
2032  for (c = 0; c < 3; c++) {
2033  us(16, display_primaries_x[c], 0, 50000, 1, c);
2034  us(16, display_primaries_y[c], 0, 50000, 1, c);
2035  }
2036 
2037  u(16, white_point_x, 0, 50000);
2038  u(16, white_point_y, 0, 50000);
2039 
2040  u(32, max_display_mastering_luminance,
2041  1, MAX_UINT_BITS(32));
2042  u(32, min_display_mastering_luminance,
2043  0, current->max_display_mastering_luminance - 1);
2044 
2045  return 0;
2046 }
2047 
2048 static int FUNC(sei_content_light_level)(CodedBitstreamContext *ctx, RWContext *rw,
2049  H265RawSEIContentLightLevelInfo *current)
2050 {
2051  int err;
2052 
2053  HEADER("Content Light Level");
2054 
2055  ub(16, max_content_light_level);
2056  ub(16, max_pic_average_light_level);
2057 
2058  return 0;
2059 }
2060 
2061 static int FUNC(sei_alternative_transfer_characteristics)(CodedBitstreamContext *ctx,
2062  RWContext *rw,
2063  H265RawSEIAlternativeTransferCharacteristics *current)
2064 {
2065  int err;
2066 
2067  HEADER("Alternative Transfer Characteristics");
2068 
2069  ub(8, preferred_transfer_characteristics);
2070 
2071  return 0;
2072 }
2073 
2074 static int FUNC(sei_alpha_channel_info)(CodedBitstreamContext *ctx,
2075  RWContext *rw,
2076  H265RawSEIAlphaChannelInfo *current)
2077 {
2078  int err, length;
2079 
2080  HEADER("Alpha Channel Information");
2081 
2082  flag(alpha_channel_cancel_flag);
2083  if (!current->alpha_channel_cancel_flag) {
2084  ub(3, alpha_channel_use_idc);
2085  ub(3, alpha_channel_bit_depth_minus8);
2086  length = current->alpha_channel_bit_depth_minus8 + 9;
2087  ub(length, alpha_transparent_value);
2088  ub(length, alpha_opaque_value);
2089  flag(alpha_channel_incr_flag);
2090  flag(alpha_channel_clip_flag);
2091  if (current->alpha_channel_clip_flag)
2092  flag(alpha_channel_clip_type_flag);
2093  } else {
2094  infer(alpha_channel_use_idc, 2);
2095  infer(alpha_channel_incr_flag, 0);
2096  infer(alpha_channel_clip_flag, 0);
2097  }
2098 
2099  return 0;
2100 }
2101 
2102 static int FUNC(payload_extension)(CodedBitstreamContext *ctx, RWContext *rw,
2103  H265RawExtensionData *current, uint32_t payload_size,
2104  int cur_pos)
2105 {
2106  int err;
2107  size_t byte_length, k;
2108 
2109 #ifdef READ
2110  GetBitContext tmp;
2111  int bits_left, payload_zero_bits;
2112 
2113  if (!cbs_h265_payload_extension_present(rw, payload_size, cur_pos))
2114  return 0;
2115 
2116  bits_left = 8 * payload_size - cur_pos;
2117  tmp = *rw;
2118  if (bits_left > 8)
2119  skip_bits_long(&tmp, bits_left - 8);
2120  payload_zero_bits = get_bits(&tmp, FFMIN(bits_left, 8));
2121  if (!payload_zero_bits)
2122  return AVERROR_INVALIDDATA;
2123  payload_zero_bits = ff_ctz(payload_zero_bits);
2124  current->bit_length = bits_left - payload_zero_bits - 1;
2125  allocate(current->data, (current->bit_length + 7) / 8);
2126 #endif
2127 
2128  byte_length = (current->bit_length + 7) / 8;
2129  for (k = 0; k < byte_length; k++) {
2130  int length = FFMIN(current->bit_length - k * 8, 8);
2131  xu(length, reserved_payload_extension_data, current->data[k],
2132  0, MAX_UINT_BITS(length), 0);
2133  }
2134 
2135  return 0;
2136 }
2137 
2138 static int FUNC(sei_payload)(CodedBitstreamContext *ctx, RWContext *rw,
2139  H265RawSEIPayload *current, int prefix)
2140 {
2141  int err, i;
2142  int start_position, current_position;
2143  int more_data = !!current->extension_data.bit_length;
2144 
2145 #ifdef READ
2146  start_position = get_bits_count(rw);
2147 #else
2148  start_position = put_bits_count(rw);
2149 #endif
2150 
2151  switch (current->payload_type) {
2152 #define SEI_TYPE_CHECK_VALID(name, prefix_valid, suffix_valid) do { \
2153  if (prefix && !prefix_valid) { \
2154  av_log(ctx->log_ctx, AV_LOG_ERROR, "SEI type %s invalid " \
2155  "as prefix SEI!\n", #name); \
2156  return AVERROR_INVALIDDATA; \
2157  } \
2158  if (!prefix && !suffix_valid) { \
2159  av_log(ctx->log_ctx, AV_LOG_ERROR, "SEI type %s invalid " \
2160  "as suffix SEI!\n", #name); \
2161  return AVERROR_INVALIDDATA; \
2162  } \
2163  } while (0)
2164 #define SEI_TYPE_N(type, prefix_valid, suffix_valid, name) \
2165  case HEVC_SEI_TYPE_ ## type: \
2166  SEI_TYPE_CHECK_VALID(name, prefix_valid, suffix_valid); \
2167  CHECK(FUNC(sei_ ## name)(ctx, rw, &current->payload.name)); \
2168  break
2169 #define SEI_TYPE_S(type, prefix_valid, suffix_valid, name) \
2170  case HEVC_SEI_TYPE_ ## type: \
2171  SEI_TYPE_CHECK_VALID(name, prefix_valid, suffix_valid); \
2172  CHECK(FUNC(sei_ ## name)(ctx, rw, &current->payload.name, \
2173  &current->payload_size)); \
2174  break
2175 #define SEI_TYPE_E(type, prefix_valid, suffix_valid, name) \
2176  case HEVC_SEI_TYPE_ ## type: \
2177  SEI_TYPE_CHECK_VALID(name, prefix_valid, suffix_valid); \
2178  CHECK(FUNC(sei_ ## name)(ctx, rw, &current->payload.name, \
2179  &current->payload_size, \
2180  &more_data)); \
2181  break
2182 
2183  SEI_TYPE_E(BUFFERING_PERIOD, 1, 0, buffering_period);
2184  SEI_TYPE_N(PICTURE_TIMING, 1, 0, pic_timing);
2185  SEI_TYPE_N(PAN_SCAN_RECT, 1, 0, pan_scan_rect);
2186  SEI_TYPE_S(USER_DATA_REGISTERED_ITU_T_T35,
2187  1, 1, user_data_registered);
2188  SEI_TYPE_S(USER_DATA_UNREGISTERED, 1, 1, user_data_unregistered);
2189  SEI_TYPE_N(RECOVERY_POINT, 1, 0, recovery_point);
2190  SEI_TYPE_N(DISPLAY_ORIENTATION, 1, 0, display_orientation);
2191  SEI_TYPE_N(ACTIVE_PARAMETER_SETS, 1, 0, active_parameter_sets);
2192  SEI_TYPE_N(DECODED_PICTURE_HASH, 0, 1, decoded_picture_hash);
2193  SEI_TYPE_N(TIME_CODE, 1, 0, time_code);
2194  SEI_TYPE_N(MASTERING_DISPLAY_INFO, 1, 0, mastering_display);
2195  SEI_TYPE_N(CONTENT_LIGHT_LEVEL_INFO, 1, 0, content_light_level);
2196  SEI_TYPE_N(ALTERNATIVE_TRANSFER_CHARACTERISTICS,
2197  1, 0, alternative_transfer_characteristics);
2198  SEI_TYPE_N(ALPHA_CHANNEL_INFO, 1, 0, alpha_channel_info);
2199 
2200 #undef SEI_TYPE_N
2201 #undef SEI_TYPE_S
2202 #undef SEI_TYPE_E
2203  default:
2204  {
2205 #ifdef READ
2206  current->payload.other.data_length = current->payload_size;
2207 #endif
2208  allocate(current->payload.other.data, current->payload.other.data_length);
2209 
2210  for (i = 0; i < current->payload_size; i++)
2211  xu(8, payload_byte[i], current->payload.other.data[i], 0, 255,
2212  1, i);
2213  }
2214  }
2215 
2216  // more_data_in_payload()
2217 #ifdef READ
2218  current_position = get_bits_count(rw) - start_position;
2219  if (current_position < 8 * current->payload_size) {
2220 #else
2221  current_position = put_bits_count(rw) - start_position;
2222  if (byte_alignment(rw) || more_data) {
2223 #endif
2224  CHECK(FUNC(payload_extension)(ctx, rw, &current->extension_data,
2225  current->payload_size, current_position));
2226  fixed(1, bit_equal_to_one, 1);
2227  while (byte_alignment(rw))
2228  fixed(1, bit_equal_to_zero, 0);
2229  }
2230 
2231 #ifdef WRITE
2232  current->payload_size = (put_bits_count(rw) - start_position) >> 3;
2233 #endif
2234 
2235  return 0;
2236 }
2237 
2238 static int FUNC(sei)(CodedBitstreamContext *ctx, RWContext *rw,
2239  H265RawSEI *current, int prefix)
2240 {
2241  int err, k;
2242 
2243  if (prefix)
2244  HEADER("Prefix Supplemental Enhancement Information");
2245  else
2246  HEADER("Suffix Supplemental Enhancement Information");
2247 
2248  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header,
2249  prefix ? HEVC_NAL_SEI_PREFIX
2250  : HEVC_NAL_SEI_SUFFIX));
2251 
2252 #ifdef READ
2253  for (k = 0; k < H265_MAX_SEI_PAYLOADS; k++) {
2254  uint32_t payload_type = 0;
2255  uint32_t payload_size = 0;
2256  uint32_t tmp;
2257 
2258  while (show_bits(rw, 8) == 0xff) {
2259  fixed(8, ff_byte, 0xff);
2260  payload_type += 255;
2261  }
2262  xu(8, last_payload_type_byte, tmp, 0, 254, 0);
2263  payload_type += tmp;
2264 
2265  while (show_bits(rw, 8) == 0xff) {
2266  fixed(8, ff_byte, 0xff);
2267  payload_size += 255;
2268  }
2269  xu(8, last_payload_size_byte, tmp, 0, 254, 0);
2270  payload_size += tmp;
2271 
2272  current->payload[k].payload_type = payload_type;
2273  current->payload[k].payload_size = payload_size;
2274 
2275  current->payload_count++;
2276  CHECK(FUNC(sei_payload)(ctx, rw, &current->payload[k], prefix));
2277 
2278  if (!cbs_h2645_read_more_rbsp_data(rw))
2279  break;
2280  }
2281  if (k >= H265_MAX_SEI_PAYLOADS) {
2282  av_log(ctx->log_ctx, AV_LOG_ERROR, "Too many payloads in "
2283  "SEI message: found %d.\n", k);
2284  return AVERROR_INVALIDDATA;
2285  }
2286 #else
2287  for (k = 0; k < current->payload_count; k++) {
2288  PutBitContext start_state;
2289  uint32_t tmp;
2290  int need_size, i;
2291 
2292  // Somewhat clumsy: we write the payload twice when
2293  // we don't know the size in advance. This will mess
2294  // with trace output, but is otherwise harmless.
2295  start_state = *rw;
2296  need_size = !current->payload[k].payload_size;
2297  for (i = 0; i < 1 + need_size; i++) {
2298  *rw = start_state;
2299 
2300  tmp = current->payload[k].payload_type;
2301  while (tmp >= 255) {
2302  fixed(8, ff_byte, 0xff);
2303  tmp -= 255;
2304  }
2305  xu(8, last_payload_type_byte, tmp, 0, 254, 0);
2306 
2307  tmp = current->payload[k].payload_size;
2308  while (tmp >= 255) {
2309  fixed(8, ff_byte, 0xff);
2310  tmp -= 255;
2311  }
2312  xu(8, last_payload_size_byte, tmp, 0, 254, 0);
2313 
2314  CHECK(FUNC(sei_payload)(ctx, rw, &current->payload[k], prefix));
2315  }
2316  }
2317 #endif
2318 
2319  CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
2320 
2321  return 0;
2322 }
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#define allocate(name, size)
Definition: cbs_h2645.c:423
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Definition: coverity.c:32
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Invalid data found when processing input.
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Definition: common.h:96
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#define profile_compatible(x)
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static int FUNC() sei_mastering_display(CodedBitstreamContext *ctx, RWContext *rw, H265RawSEIMasteringDisplayColourVolume *current)
Definition: cbs_h265_syntax_template.c:2025
H265RawVUI::vui_hrd_parameters_present_flag
uint8_t vui_hrd_parameters_present_flag
Definition: cbs_h265.h:171
H265RawSPS::num_long_term_ref_pics_sps
uint8_t num_long_term_ref_pics_sps
Definition: cbs_h265.h:311
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static void bit_depth(AudioStatsContext *s, uint64_t mask, uint64_t imask, AVRational *depth)
Definition: af_astats.c:254
H265RawPPS::pps_beta_offset_div2
int8_t pps_beta_offset_div2
Definition: cbs_h265.h:398
H265RawPPS::pps_deblocking_filter_disabled_flag
uint8_t pps_deblocking_filter_disabled_flag
Definition: cbs_h265.h:397
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AVFormatContext * ctx
Definition: movenc.c:48
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static int FUNC() pps(CodedBitstreamContext *ctx, RWContext *rw, H265RawPPS *current)
Definition: cbs_h265_syntax_template.c:1033
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static unsigned int show_bits(GetBitContext *s, int n)
Show 1-25 bits.
Definition: get_bits.h:446
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static int FUNC() sei_active_parameter_sets(CodedBitstreamContext *ctx, RWContext *rw, H265RawSEIActiveParameterSets *current)
Definition: cbs_h265_syntax_template.c:1908
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uint16_t pic_width_in_luma_samples
Definition: cbs_h265.h:267
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uint8_t lists_modification_present_flag
Definition: cbs_h265.h:404
H265RawSPS::log2_min_luma_coding_block_size_minus3
uint8_t log2_min_luma_coding_block_size_minus3
Definition: cbs_h265.h:286
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uint8_t vcl_hrd_parameters_present_flag
Definition: cbs_h265.h:110
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uint8_t pps_seq_parameter_set_id
Definition: cbs_h265.h:358
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uint8_t cabac_init_present_flag
Definition: cbs_h265.h:364
SEI_TYPE_N
#define SEI_TYPE_N(type, prefix_valid, suffix_valid, name)
comp
static void comp(unsigned char *dst, ptrdiff_t dst_stride, unsigned char *src, ptrdiff_t src_stride, int add)
Definition: eamad.c:85
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
aud
static int FUNC() aud(CodedBitstreamContext *ctx, RWContext *rw, H265RawAUD *current)
Definition: cbs_h265_syntax_template.c:1156
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uint8_t used_by_curr_pic_s1_flag[HEVC_MAX_REFS]
Definition: cbs_h265.h:242
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uint8_t num_extra_slice_header_bits
Definition: cbs_h265.h:362
H265_MAX_SEI_PAYLOADS
Definition: cbs_h265.h:34
CodedBitstreamH265Context::active_sps
const H265RawSPS * active_sps
Definition: cbs_h265.h:745
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static int FUNC() scaling_list_data(CodedBitstreamContext *ctx, RWContext *rw, H265RawScalingList *current)
Definition: cbs_h265_syntax_template.c:668
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uint8_t entropy_coding_sync_enabled_flag
Definition: cbs_h265.h:385
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uint8_t output_flag_present_flag
Definition: cbs_h265.h:361
H265RawPPS::weighted_bipred_flag
uint8_t weighted_bipred_flag
Definition: cbs_h265.h:381
H265RawPPS::dependent_slice_segments_enabled_flag
uint8_t dependent_slice_segments_enabled_flag
Definition: cbs_h265.h:360
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uint8_t sps_temporal_mvp_enabled_flag
Definition: cbs_h265.h:315
ub
#define ub(width, name)
Definition: cbs_h2645.c:264
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#define xu(width, name, var, range_min, range_max, subs,...)
Definition: cbs_h2645.c:384
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uint8_t pps_loop_filter_across_slices_enabled_flag
Definition: cbs_h265.h:394
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uint8_t weighted_pred_flag
Definition: cbs_h265.h:380
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static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:467
CodedBitstreamContext
Context structure for coded bitstream operations.
Definition: cbs.h:170
CodedBitstreamH265Context::active_vps
const H265RawVPS * active_vps
Definition: cbs_h265.h:744
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static int FUNC() profile_tier_level(CodedBitstreamContext *ctx, RWContext *rw, H265RawProfileTierLevel *current, int profile_present_flag, int max_num_sub_layers_minus1)
Definition: cbs_h265_syntax_template.c:88
H265RawSPS::chroma_format_idc
uint8_t chroma_format_idc
Definition: cbs_h265.h:264
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static int cbs_h2645_read_more_rbsp_data(GetBitContext *gbc)
Definition: cbs_h2645.c:335
CodedBitstreamH265Context::active_pps
const H265RawPPS * active_pps
Definition: cbs_h265.h:746
H265RawVPS::vps_base_layer_internal_flag
uint8_t vps_base_layer_internal_flag
Definition: cbs_h265.h:196
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static int FUNC() vps(CodedBitstreamContext *ctx, RWContext *rw, H265RawVPS *current)
Definition: cbs_h265_syntax_template.c:420
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
H265RawSTRefPicSet::num_positive_pics
uint8_t num_positive_pics
Definition: cbs_h265.h:238
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static int FUNC() sei_recovery_point(CodedBitstreamContext *ctx, RWContext *rw, H265RawSEIRecoveryPoint *current)
Definition: cbs_h265_syntax_template.c:1875
nal_unit_header
static int FUNC() nal_unit_header(CodedBitstreamContext *ctx, RWContext *rw, H265RawNALUnitHeader *current, int expected_nal_unit_type)
Definition: cbs_h265_syntax_template.c:30
H265RawProfileTierLevel::general_progressive_source_flag
uint8_t general_progressive_source_flag
Definition: cbs_h265.h:50
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static int FUNC() sei_buffering_period(CodedBitstreamContext *ctx, RWContext *rw, H265RawSEIBufferingPeriod *current, uint32_t *payload_size, int *more_data)
Definition: cbs_h265_syntax_template.c:1599
ref
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
flag
#define flag(name)
Definition: cbs_av1.c:553
bit
#define bit(string, value)
Definition: cbs_mpeg2.c:58
H265RawPPS::num_tile_rows_minus1
uint8_t num_tile_rows_minus1
Definition: cbs_h265.h:388
sei_pic_timing
static int FUNC() sei_pic_timing(CodedBitstreamContext *ctx, RWContext *rw, H265RawSEIPicTiming *current)
Definition: cbs_h265_syntax_template.c:1710
H265RawPPS::pps_act_cb_qp_offset_plus5
int8_t pps_act_cb_qp_offset_plus5
Definition: cbs_h265.h:434
ubs
#define ubs(width, name, subs,...)
Definition: cbs_h2645.c:278
H265RawHRDParameters::sub_pic_hrd_params_present_flag
uint8_t sub_pic_hrd_params_present_flag
Definition: cbs_h265.h:112
H265RawPPS::num_tile_columns_minus1
uint8_t num_tile_columns_minus1
Definition: cbs_h265.h:387
H265RawSPS::log2_diff_max_min_luma_coding_block_size
uint8_t log2_diff_max_min_luma_coding_block_size
Definition: cbs_h265.h:287
H265RawHRDParameters::sub_pic_cpb_params_in_pic_timing_sei_flag
uint8_t sub_pic_cpb_params_in_pic_timing_sei_flag
Definition: cbs_h265.h:115
H265RawHRDParameters::cpb_cnt_minus1
uint8_t cpb_cnt_minus1[HEVC_MAX_SUB_LAYERS]
Definition: cbs_h265.h:130
H265RawHRDParameters::dpb_output_delay_du_length_minus1
uint8_t dpb_output_delay_du_length_minus1
Definition: cbs_h265.h:116
H265RawSPS::used_by_curr_pic_lt_sps_flag
uint8_t used_by_curr_pic_lt_sps_flag[HEVC_MAX_LONG_TERM_REF_PICS]
Definition: cbs_h265.h:313
AVFormatContext::priv_data
void * priv_data
Format private data.
Definition: avformat.h:1267
H265RawSPS::num_short_term_ref_pic_sets
uint8_t num_short_term_ref_pic_sets
Definition: cbs_h265.h:307
SEI_TYPE_E
#define SEI_TYPE_E(type, prefix_valid, suffix_valid, name)
sps
static int FUNC() sps(CodedBitstreamContext *ctx, RWContext *rw, H265RawSPS *current)
Definition: cbs_h265_syntax_template.c:773
H265RawVPS::vps_temporal_id_nesting_flag
uint8_t vps_temporal_id_nesting_flag
Definition: cbs_h265.h:200
sei_alpha_channel_info
static int FUNC() sei_alpha_channel_info(CodedBitstreamContext *ctx, RWContext *rw, H265RawSEIAlphaChannelInfo *current)
Definition: cbs_h265_syntax_template.c:2074
ibs
#define ibs(width, name, subs,...)
Definition: cbs_h2645.c:286
H265RawPPS::pps_tc_offset_div2
int8_t pps_tc_offset_div2
Definition: cbs_h265.h:399
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static int FUNC() sei_user_data_unregistered(CodedBitstreamContext *ctx, RWContext *rw, H265RawSEIUserDataUnregistered *current, uint32_t *payload_size)
Definition: cbs_h265_syntax_template.c:1845
sps_range_extension
static int FUNC() sps_range_extension(CodedBitstreamContext *ctx, RWContext *rw, H265RawSPS *current)
Definition: cbs_h265_syntax_template.c:699
H265RawPPS::init_qp_minus26
int8_t init_qp_minus26
Definition: cbs_h265.h:369
H265RawPPS::pps_curr_pic_ref_enabled_flag
uint8_t pps_curr_pic_ref_enabled_flag
Definition: cbs_h265.h:430
H265RawPPS::slice_segment_header_extension_present_flag
uint8_t slice_segment_header_extension_present_flag
Definition: cbs_h265.h:407
infer
#define infer(name, value)
Definition: cbs_av1.c:709
CodedBitstreamH265Context::vps
H265RawVPS * vps[HEVC_MAX_VPS_COUNT]
Definition: cbs_h265.h:737
H265RawSPS::separate_colour_plane_flag
uint8_t separate_colour_plane_flag
Definition: cbs_h265.h:265
H265RawHRDParameters::initial_cpb_removal_delay_length_minus1
uint8_t initial_cpb_removal_delay_length_minus1
Definition: cbs_h265.h:122
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static int FUNC() rbsp_trailing_bits(CodedBitstreamContext *ctx, RWContext *rw)
Definition: cbs_h265_syntax_template.c:19
H265RawSPS::long_term_ref_pics_present_flag
uint8_t long_term_ref_pics_present_flag
Definition: cbs_h265.h:310
sei_payload
static int FUNC() sei_payload(CodedBitstreamContext *ctx, RWContext *rw, H265RawSEIPayload *current, int prefix)
Definition: cbs_h265_syntax_template.c:2138
ues
#define ues(name, range_min, range_max, subs,...)
Definition: cbs_h2645.c:282
i
int i
Definition: input.c:407
H265RawPPS::pps_act_cr_qp_offset_plus3
int8_t pps_act_cr_qp_offset_plus3
Definition: cbs_h265.h:435
vui_parameters_default
static int FUNC() vui_parameters_default(CodedBitstreamContext *ctx, RWContext *rw, H265RawVUI *current, H265RawSPS *sps)
Definition: cbs_h265_syntax_template.c:747
H265RawPPS::num_ref_idx_l1_default_active_minus1
uint8_t num_ref_idx_l1_default_active_minus1
Definition: cbs_h265.h:367
tmp
static uint8_t tmp[11]
Definition: aes_ctr.c:27
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