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  H265RawPSExtensionData *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), 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;
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 
542  flag(delta_rps_sign);
543  ue(abs_delta_rps_minus1, 0, INT16_MAX);
544  delta_rps = (1 - 2 * current->delta_rps_sign) *
545  (current->abs_delta_rps_minus1 + 1);
546 
547  for (j = 0; j <= num_delta_pocs; j++) {
548  flags(used_by_curr_pic_flag[j], 1, j);
549  if (!current->used_by_curr_pic_flag[j])
550  flags(use_delta_flag[j], 1, j);
551  else
552  infer(use_delta_flag[j], 1);
553  }
554 
555  // Since the stored form of an RPS here is actually the delta-step
556  // form used when inter_ref_pic_set_prediction_flag is not set, we
557  // need to reconstruct that here in order to be able to refer to
558  // the RPS later (which is required for parsing, because we don't
559  // even know what syntax elements appear without it). Therefore,
560  // this code takes the delta-step form of the reference set, turns
561  // it into the delta-array form, applies the prediction process of
562  // 7.4.8, converts the result back to the delta-step form, and
563  // stores that as the current set for future use. Note that the
564  // inferences here mean that writers using prediction will need
565  // to fill in the delta-step values correctly as well - since the
566  // whole RPS prediction process is somewhat overly sophisticated,
567  // this hopefully forms a useful check for them to ensure their
568  // predicted form actually matches what was intended rather than
569  // an onerous additional requirement.
570 
571  d_poc = 0;
572  for (i = 0; i < ref->num_negative_pics; i++) {
573  d_poc -= ref->delta_poc_s0_minus1[i] + 1;
574  ref_delta_poc_s0[i] = d_poc;
575  }
576  d_poc = 0;
577  for (i = 0; i < ref->num_positive_pics; i++) {
578  d_poc += ref->delta_poc_s1_minus1[i] + 1;
579  ref_delta_poc_s1[i] = d_poc;
580  }
581 
582  i = 0;
583  for (j = ref->num_positive_pics - 1; j >= 0; j--) {
584  d_poc = ref_delta_poc_s1[j] + delta_rps;
585  if (d_poc < 0 && current->use_delta_flag[ref->num_negative_pics + j]) {
586  delta_poc_s0[i] = d_poc;
587  used_by_curr_pic_s0[i++] =
588  current->used_by_curr_pic_flag[ref->num_negative_pics + j];
589  }
590  }
591  if (delta_rps < 0 && current->use_delta_flag[num_delta_pocs]) {
592  delta_poc_s0[i] = delta_rps;
593  used_by_curr_pic_s0[i++] =
594  current->used_by_curr_pic_flag[num_delta_pocs];
595  }
596  for (j = 0; j < ref->num_negative_pics; j++) {
597  d_poc = ref_delta_poc_s0[j] + delta_rps;
598  if (d_poc < 0 && current->use_delta_flag[j]) {
599  delta_poc_s0[i] = d_poc;
600  used_by_curr_pic_s0[i++] = current->used_by_curr_pic_flag[j];
601  }
602  }
603 
604  infer(num_negative_pics, i);
605  for (i = 0; i < current->num_negative_pics; i++) {
606  infer(delta_poc_s0_minus1[i],
607  -(delta_poc_s0[i] - (i == 0 ? 0 : delta_poc_s0[i - 1])) - 1);
608  infer(used_by_curr_pic_s0_flag[i], used_by_curr_pic_s0[i]);
609  }
610 
611  i = 0;
612  for (j = ref->num_negative_pics - 1; j >= 0; j--) {
613  d_poc = ref_delta_poc_s0[j] + delta_rps;
614  if (d_poc > 0 && current->use_delta_flag[j]) {
615  delta_poc_s1[i] = d_poc;
616  used_by_curr_pic_s1[i++] = current->used_by_curr_pic_flag[j];
617  }
618  }
619  if (delta_rps > 0 && current->use_delta_flag[num_delta_pocs]) {
620  delta_poc_s1[i] = delta_rps;
621  used_by_curr_pic_s1[i++] =
622  current->used_by_curr_pic_flag[num_delta_pocs];
623  }
624  for (j = 0; j < ref->num_positive_pics; j++) {
625  d_poc = ref_delta_poc_s1[j] + delta_rps;
626  if (d_poc > 0 && current->use_delta_flag[ref->num_negative_pics + j]) {
627  delta_poc_s1[i] = d_poc;
628  used_by_curr_pic_s1[i++] =
629  current->used_by_curr_pic_flag[ref->num_negative_pics + j];
630  }
631  }
632 
633  infer(num_positive_pics, i);
634  for (i = 0; i < current->num_positive_pics; i++) {
635  infer(delta_poc_s1_minus1[i],
636  delta_poc_s1[i] - (i == 0 ? 0 : delta_poc_s1[i - 1]) - 1);
637  infer(used_by_curr_pic_s1_flag[i], used_by_curr_pic_s1[i]);
638  }
639 
640  } else {
641  ue(num_negative_pics, 0, 15);
642  ue(num_positive_pics, 0, 15 - current->num_negative_pics);
643 
644  for (i = 0; i < current->num_negative_pics; i++) {
645  ues(delta_poc_s0_minus1[i], 0, INT16_MAX, 1, i);
646  flags(used_by_curr_pic_s0_flag[i], 1, i);
647  }
648 
649  for (i = 0; i < current->num_positive_pics; i++) {
650  ues(delta_poc_s1_minus1[i], 0, INT16_MAX, 1, i);
651  flags(used_by_curr_pic_s1_flag[i], 1, i);
652  }
653  }
654 
655  return 0;
656 }
657 
658 static int FUNC(scaling_list_data)(CodedBitstreamContext *ctx, RWContext *rw,
659  H265RawScalingList *current)
660 {
661  int sizeId, matrixId;
662  int err, n, i;
663 
664  for (sizeId = 0; sizeId < 4; sizeId++) {
665  for (matrixId = 0; matrixId < 6; matrixId += (sizeId == 3 ? 3 : 1)) {
666  flags(scaling_list_pred_mode_flag[sizeId][matrixId],
667  2, sizeId, matrixId);
668  if (!current->scaling_list_pred_mode_flag[sizeId][matrixId]) {
669  ues(scaling_list_pred_matrix_id_delta[sizeId][matrixId],
670  0, sizeId == 3 ? matrixId / 3 : matrixId,
671  2, sizeId, matrixId);
672  } else {
673  n = FFMIN(64, 1 << (4 + (sizeId << 1)));
674  if (sizeId > 1) {
675  ses(scaling_list_dc_coef_minus8[sizeId - 2][matrixId], -7, +247,
676  2, sizeId - 2, matrixId);
677  }
678  for (i = 0; i < n; i++) {
679  ses(scaling_list_delta_coeff[sizeId][matrixId][i],
680  -128, +127, 3, sizeId, matrixId, i);
681  }
682  }
683  }
684  }
685 
686  return 0;
687 }
688 
689 static int FUNC(sps_range_extension)(CodedBitstreamContext *ctx, RWContext *rw,
690  H265RawSPS *current)
691 {
692  int err;
693 
694  flag(transform_skip_rotation_enabled_flag);
695  flag(transform_skip_context_enabled_flag);
696  flag(implicit_rdpcm_enabled_flag);
697  flag(explicit_rdpcm_enabled_flag);
698  flag(extended_precision_processing_flag);
699  flag(intra_smoothing_disabled_flag);
700  flag(high_precision_offsets_enabled_flag);
701  flag(persistent_rice_adaptation_enabled_flag);
702  flag(cabac_bypass_alignment_enabled_flag);
703 
704  return 0;
705 }
706 
707 static int FUNC(sps_scc_extension)(CodedBitstreamContext *ctx, RWContext *rw,
708  H265RawSPS *current)
709 {
710  int err, comp, i;
711 
712  flag(sps_curr_pic_ref_enabled_flag);
713 
714  flag(palette_mode_enabled_flag);
715  if (current->palette_mode_enabled_flag) {
716  ue(palette_max_size, 0, 64);
717  ue(delta_palette_max_predictor_size, 0, 128);
718 
719  flag(sps_palette_predictor_initializer_present_flag);
720  if (current->sps_palette_predictor_initializer_present_flag) {
721  ue(sps_num_palette_predictor_initializer_minus1, 0, 128);
722  for (comp = 0; comp < (current->chroma_format_idc ? 3 : 1); comp++) {
723  int bit_depth = comp == 0 ? current->bit_depth_luma_minus8 + 8
724  : current->bit_depth_chroma_minus8 + 8;
725  for (i = 0; i <= current->sps_num_palette_predictor_initializer_minus1; i++)
726  ubs(bit_depth, sps_palette_predictor_initializers[comp][i], 2, comp, i);
727  }
728  }
729  }
730 
731  u(2, motion_vector_resolution_control_idc, 0, 2);
732  flag(intra_boundary_filtering_disable_flag);
733 
734  return 0;
735 }
736 
737 static int FUNC(sps)(CodedBitstreamContext *ctx, RWContext *rw,
738  H265RawSPS *current)
739 {
740  CodedBitstreamH265Context *h265 = ctx->priv_data;
741  const H265RawVPS *vps;
742  int err, i;
743  unsigned int min_cb_log2_size_y, ctb_log2_size_y,
744  min_cb_size_y, min_tb_log2_size_y;
745 
746  HEADER("Sequence Parameter Set");
747 
748  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header, HEVC_NAL_SPS));
749 
750  ub(4, sps_video_parameter_set_id);
751  h265->active_vps = vps = h265->vps[current->sps_video_parameter_set_id];
752 
753  u(3, sps_max_sub_layers_minus1, 0, HEVC_MAX_SUB_LAYERS - 1);
754  flag(sps_temporal_id_nesting_flag);
755  if (vps) {
756  if (vps->vps_max_sub_layers_minus1 > current->sps_max_sub_layers_minus1) {
757  av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid stream: "
758  "sps_max_sub_layers_minus1 (%d) must be less than or equal to "
759  "vps_max_sub_layers_minus1 (%d).\n",
760  vps->vps_max_sub_layers_minus1,
761  current->sps_max_sub_layers_minus1);
762  return AVERROR_INVALIDDATA;
763  }
764  if (vps->vps_temporal_id_nesting_flag &&
765  !current->sps_temporal_id_nesting_flag) {
766  av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid stream: "
767  "sps_temporal_id_nesting_flag must be 1 if "
768  "vps_temporal_id_nesting_flag is 1.\n");
769  return AVERROR_INVALIDDATA;
770  }
771  }
772 
773  CHECK(FUNC(profile_tier_level)(ctx, rw, &current->profile_tier_level,
774  1, current->sps_max_sub_layers_minus1));
775 
776  ue(sps_seq_parameter_set_id, 0, 15);
777 
778  ue(chroma_format_idc, 0, 3);
779  if (current->chroma_format_idc == 3)
780  flag(separate_colour_plane_flag);
781  else
782  infer(separate_colour_plane_flag, 0);
783 
784  ue(pic_width_in_luma_samples, 1, HEVC_MAX_WIDTH);
785  ue(pic_height_in_luma_samples, 1, HEVC_MAX_HEIGHT);
786 
787  flag(conformance_window_flag);
788  if (current->conformance_window_flag) {
789  ue(conf_win_left_offset, 0, current->pic_width_in_luma_samples);
790  ue(conf_win_right_offset, 0, current->pic_width_in_luma_samples);
791  ue(conf_win_top_offset, 0, current->pic_height_in_luma_samples);
792  ue(conf_win_bottom_offset, 0, current->pic_height_in_luma_samples);
793  } else {
794  infer(conf_win_left_offset, 0);
795  infer(conf_win_right_offset, 0);
796  infer(conf_win_top_offset, 0);
797  infer(conf_win_bottom_offset, 0);
798  }
799 
800  ue(bit_depth_luma_minus8, 0, 8);
801  ue(bit_depth_chroma_minus8, 0, 8);
802 
803  ue(log2_max_pic_order_cnt_lsb_minus4, 0, 12);
804 
805  flag(sps_sub_layer_ordering_info_present_flag);
806  for (i = (current->sps_sub_layer_ordering_info_present_flag ?
807  0 : current->sps_max_sub_layers_minus1);
808  i <= current->sps_max_sub_layers_minus1; i++) {
809  ues(sps_max_dec_pic_buffering_minus1[i],
810  0, HEVC_MAX_DPB_SIZE - 1, 1, i);
811  ues(sps_max_num_reorder_pics[i],
812  0, current->sps_max_dec_pic_buffering_minus1[i], 1, i);
813  ues(sps_max_latency_increase_plus1[i],
814  0, UINT32_MAX - 1, 1, i);
815  }
816  if (!current->sps_sub_layer_ordering_info_present_flag) {
817  for (i = 0; i < current->sps_max_sub_layers_minus1; i++) {
818  infer(sps_max_dec_pic_buffering_minus1[i],
819  current->sps_max_dec_pic_buffering_minus1[current->sps_max_sub_layers_minus1]);
820  infer(sps_max_num_reorder_pics[i],
821  current->sps_max_num_reorder_pics[current->sps_max_sub_layers_minus1]);
822  infer(sps_max_latency_increase_plus1[i],
823  current->sps_max_latency_increase_plus1[current->sps_max_sub_layers_minus1]);
824  }
825  }
826 
827  ue(log2_min_luma_coding_block_size_minus3, 0, 3);
828  min_cb_log2_size_y = current->log2_min_luma_coding_block_size_minus3 + 3;
829 
830  ue(log2_diff_max_min_luma_coding_block_size, 0, 3);
831  ctb_log2_size_y = min_cb_log2_size_y +
832  current->log2_diff_max_min_luma_coding_block_size;
833 
834  min_cb_size_y = 1 << min_cb_log2_size_y;
835  if (current->pic_width_in_luma_samples % min_cb_size_y ||
836  current->pic_height_in_luma_samples % min_cb_size_y) {
837  av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid dimensions: %ux%u not divisible "
838  "by MinCbSizeY = %u.\n", current->pic_width_in_luma_samples,
839  current->pic_height_in_luma_samples, min_cb_size_y);
840  return AVERROR_INVALIDDATA;
841  }
842 
843  ue(log2_min_luma_transform_block_size_minus2, 0, min_cb_log2_size_y - 3);
844  min_tb_log2_size_y = current->log2_min_luma_transform_block_size_minus2 + 2;
845 
846  ue(log2_diff_max_min_luma_transform_block_size,
847  0, FFMIN(ctb_log2_size_y, 5) - min_tb_log2_size_y);
848 
849  ue(max_transform_hierarchy_depth_inter,
850  0, ctb_log2_size_y - min_tb_log2_size_y);
851  ue(max_transform_hierarchy_depth_intra,
852  0, ctb_log2_size_y - min_tb_log2_size_y);
853 
854  flag(scaling_list_enabled_flag);
855  if (current->scaling_list_enabled_flag) {
856  flag(sps_scaling_list_data_present_flag);
857  if (current->sps_scaling_list_data_present_flag)
858  CHECK(FUNC(scaling_list_data)(ctx, rw, &current->scaling_list));
859  } else {
860  infer(sps_scaling_list_data_present_flag, 0);
861  }
862 
863  flag(amp_enabled_flag);
864  flag(sample_adaptive_offset_enabled_flag);
865 
866  flag(pcm_enabled_flag);
867  if (current->pcm_enabled_flag) {
868  u(4, pcm_sample_bit_depth_luma_minus1,
869  0, current->bit_depth_luma_minus8 + 8 - 1);
870  u(4, pcm_sample_bit_depth_chroma_minus1,
871  0, current->bit_depth_chroma_minus8 + 8 - 1);
872 
873  ue(log2_min_pcm_luma_coding_block_size_minus3,
874  FFMIN(min_cb_log2_size_y, 5) - 3, FFMIN(ctb_log2_size_y, 5) - 3);
875  ue(log2_diff_max_min_pcm_luma_coding_block_size,
876  0, FFMIN(ctb_log2_size_y, 5) - (current->log2_min_pcm_luma_coding_block_size_minus3 + 3));
877 
878  flag(pcm_loop_filter_disabled_flag);
879  }
880 
881  ue(num_short_term_ref_pic_sets, 0, HEVC_MAX_SHORT_TERM_REF_PIC_SETS);
882  for (i = 0; i < current->num_short_term_ref_pic_sets; i++)
883  CHECK(FUNC(st_ref_pic_set)(ctx, rw, &current->st_ref_pic_set[i], i, current));
884 
885  flag(long_term_ref_pics_present_flag);
886  if (current->long_term_ref_pics_present_flag) {
887  ue(num_long_term_ref_pics_sps, 0, HEVC_MAX_LONG_TERM_REF_PICS);
888  for (i = 0; i < current->num_long_term_ref_pics_sps; i++) {
889  ubs(current->log2_max_pic_order_cnt_lsb_minus4 + 4,
890  lt_ref_pic_poc_lsb_sps[i], 1, i);
891  flags(used_by_curr_pic_lt_sps_flag[i], 1, i);
892  }
893  }
894 
895  flag(sps_temporal_mvp_enabled_flag);
896  flag(strong_intra_smoothing_enabled_flag);
897 
898  flag(vui_parameters_present_flag);
899  if (current->vui_parameters_present_flag)
900  CHECK(FUNC(vui_parameters)(ctx, rw, &current->vui, current));
901 
902  flag(sps_extension_present_flag);
903  if (current->sps_extension_present_flag) {
904  flag(sps_range_extension_flag);
905  flag(sps_multilayer_extension_flag);
906  flag(sps_3d_extension_flag);
907  flag(sps_scc_extension_flag);
908  ub(4, sps_extension_4bits);
909  }
910 
911  if (current->sps_range_extension_flag)
912  CHECK(FUNC(sps_range_extension)(ctx, rw, current));
913  if (current->sps_multilayer_extension_flag)
914  return AVERROR_PATCHWELCOME;
915  if (current->sps_3d_extension_flag)
916  return AVERROR_PATCHWELCOME;
917  if (current->sps_scc_extension_flag)
918  CHECK(FUNC(sps_scc_extension)(ctx, rw, current));
919  if (current->sps_extension_4bits)
920  CHECK(FUNC(extension_data)(ctx, rw, &current->extension_data));
921 
922  CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
923 
924  return 0;
925 }
926 
927 static int FUNC(pps_range_extension)(CodedBitstreamContext *ctx, RWContext *rw,
928  H265RawPPS *current)
929 {
930  CodedBitstreamH265Context *h265 = ctx->priv_data;
931  const H265RawSPS *sps = h265->active_sps;
932  int err, i;
933 
934  if (current->transform_skip_enabled_flag)
935  ue(log2_max_transform_skip_block_size_minus2, 0, 3);
936  flag(cross_component_prediction_enabled_flag);
937 
938  flag(chroma_qp_offset_list_enabled_flag);
939  if (current->chroma_qp_offset_list_enabled_flag) {
940  ue(diff_cu_chroma_qp_offset_depth,
941  0, sps->log2_diff_max_min_luma_coding_block_size);
942  ue(chroma_qp_offset_list_len_minus1, 0, 5);
943  for (i = 0; i <= current->chroma_qp_offset_list_len_minus1; i++) {
944  ses(cb_qp_offset_list[i], -12, +12, 1, i);
945  ses(cr_qp_offset_list[i], -12, +12, 1, i);
946  }
947  }
948 
949  ue(log2_sao_offset_scale_luma, 0, FFMAX(0, sps->bit_depth_luma_minus8 - 2));
950  ue(log2_sao_offset_scale_chroma, 0, FFMAX(0, sps->bit_depth_chroma_minus8 - 2));
951 
952  return 0;
953 }
954 
955 static int FUNC(pps_scc_extension)(CodedBitstreamContext *ctx, RWContext *rw,
956  H265RawPPS *current)
957 {
958  int err, comp, i;
959 
960  flag(pps_curr_pic_ref_enabled_flag);
961 
962  flag(residual_adaptive_colour_transform_enabled_flag);
963  if (current->residual_adaptive_colour_transform_enabled_flag) {
964  flag(pps_slice_act_qp_offsets_present_flag);
965  se(pps_act_y_qp_offset_plus5, -7, +17);
966  se(pps_act_cb_qp_offset_plus5, -7, +17);
967  se(pps_act_cr_qp_offset_plus3, -9, +15);
968  } else {
969  infer(pps_slice_act_qp_offsets_present_flag, 0);
970  infer(pps_act_y_qp_offset_plus5, 0);
971  infer(pps_act_cb_qp_offset_plus5, 0);
972  infer(pps_act_cr_qp_offset_plus3, 0);
973  }
974 
975  flag(pps_palette_predictor_initializer_present_flag);
976  if (current->pps_palette_predictor_initializer_present_flag) {
977  ue(pps_num_palette_predictor_initializer, 0, 128);
978  if (current->pps_num_palette_predictor_initializer > 0) {
979  flag(monochrome_palette_flag);
980  ue(luma_bit_depth_entry_minus8, 0, 8);
981  if (!current->monochrome_palette_flag)
982  ue(chroma_bit_depth_entry_minus8, 0, 8);
983  for (comp = 0; comp < (current->monochrome_palette_flag ? 1 : 3); comp++) {
984  int bit_depth = comp == 0 ? current->luma_bit_depth_entry_minus8 + 8
985  : current->chroma_bit_depth_entry_minus8 + 8;
986  for (i = 0; i < current->pps_num_palette_predictor_initializer; i++)
987  ubs(bit_depth, pps_palette_predictor_initializers[comp][i], 2, comp, i);
988  }
989  }
990  }
991 
992  return 0;
993 }
994 
995 static int FUNC(pps)(CodedBitstreamContext *ctx, RWContext *rw,
996  H265RawPPS *current)
997 {
998  CodedBitstreamH265Context *h265 = ctx->priv_data;
999  const H265RawSPS *sps;
1000  int err, i;
1001 
1002  HEADER("Picture Parameter Set");
1003 
1004  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header, HEVC_NAL_PPS));
1005 
1006  ue(pps_pic_parameter_set_id, 0, 63);
1007  ue(pps_seq_parameter_set_id, 0, 15);
1008  sps = h265->sps[current->pps_seq_parameter_set_id];
1009  if (!sps) {
1010  av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n",
1011  current->pps_seq_parameter_set_id);
1012  return AVERROR_INVALIDDATA;
1013  }
1014  h265->active_sps = sps;
1015 
1016  flag(dependent_slice_segments_enabled_flag);
1017  flag(output_flag_present_flag);
1018  ub(3, num_extra_slice_header_bits);
1019  flag(sign_data_hiding_enabled_flag);
1020  flag(cabac_init_present_flag);
1021 
1022  ue(num_ref_idx_l0_default_active_minus1, 0, 14);
1023  ue(num_ref_idx_l1_default_active_minus1, 0, 14);
1024 
1025  se(init_qp_minus26, -(26 + 6 * sps->bit_depth_luma_minus8), +25);
1026 
1027  flag(constrained_intra_pred_flag);
1028  flag(transform_skip_enabled_flag);
1029  flag(cu_qp_delta_enabled_flag);
1030  if (current->cu_qp_delta_enabled_flag)
1031  ue(diff_cu_qp_delta_depth,
1032  0, sps->log2_diff_max_min_luma_coding_block_size);
1033  else
1034  infer(diff_cu_qp_delta_depth, 0);
1035 
1036  se(pps_cb_qp_offset, -12, +12);
1037  se(pps_cr_qp_offset, -12, +12);
1038  flag(pps_slice_chroma_qp_offsets_present_flag);
1039 
1040  flag(weighted_pred_flag);
1041  flag(weighted_bipred_flag);
1042 
1043  flag(transquant_bypass_enabled_flag);
1044  flag(tiles_enabled_flag);
1045  flag(entropy_coding_sync_enabled_flag);
1046 
1047  if (current->tiles_enabled_flag) {
1048  ue(num_tile_columns_minus1, 0, HEVC_MAX_TILE_COLUMNS);
1049  ue(num_tile_rows_minus1, 0, HEVC_MAX_TILE_ROWS);
1050  flag(uniform_spacing_flag);
1051  if (!current->uniform_spacing_flag) {
1052  for (i = 0; i < current->num_tile_columns_minus1; i++)
1053  ues(column_width_minus1[i], 0, sps->pic_width_in_luma_samples, 1, i);
1054  for (i = 0; i < current->num_tile_rows_minus1; i++)
1055  ues(row_height_minus1[i], 0, sps->pic_height_in_luma_samples, 1, i);
1056  }
1057  flag(loop_filter_across_tiles_enabled_flag);
1058  } else {
1059  infer(num_tile_columns_minus1, 0);
1060  infer(num_tile_rows_minus1, 0);
1061  }
1062 
1063  flag(pps_loop_filter_across_slices_enabled_flag);
1064  flag(deblocking_filter_control_present_flag);
1065  if (current->deblocking_filter_control_present_flag) {
1066  flag(deblocking_filter_override_enabled_flag);
1067  flag(pps_deblocking_filter_disabled_flag);
1068  if (!current->pps_deblocking_filter_disabled_flag) {
1069  se(pps_beta_offset_div2, -6, +6);
1070  se(pps_tc_offset_div2, -6, +6);
1071  } else {
1072  infer(pps_beta_offset_div2, 0);
1073  infer(pps_tc_offset_div2, 0);
1074  }
1075  } else {
1076  infer(deblocking_filter_override_enabled_flag, 0);
1077  infer(pps_deblocking_filter_disabled_flag, 0);
1078  infer(pps_beta_offset_div2, 0);
1079  infer(pps_tc_offset_div2, 0);
1080  }
1081 
1082  flag(pps_scaling_list_data_present_flag);
1083  if (current->pps_scaling_list_data_present_flag)
1084  CHECK(FUNC(scaling_list_data)(ctx, rw, &current->scaling_list));
1085 
1086  flag(lists_modification_present_flag);
1087 
1088  ue(log2_parallel_merge_level_minus2,
1089  0, (sps->log2_min_luma_coding_block_size_minus3 + 3 +
1090  sps->log2_diff_max_min_luma_coding_block_size - 2));
1091 
1092  flag(slice_segment_header_extension_present_flag);
1093 
1094  flag(pps_extension_present_flag);
1095  if (current->pps_extension_present_flag) {
1096  flag(pps_range_extension_flag);
1097  flag(pps_multilayer_extension_flag);
1098  flag(pps_3d_extension_flag);
1099  flag(pps_scc_extension_flag);
1100  ub(4, pps_extension_4bits);
1101  }
1102  if (current->pps_range_extension_flag)
1103  CHECK(FUNC(pps_range_extension)(ctx, rw, current));
1104  if (current->pps_multilayer_extension_flag)
1105  return AVERROR_PATCHWELCOME;
1106  if (current->pps_3d_extension_flag)
1107  return AVERROR_PATCHWELCOME;
1108  if (current->pps_scc_extension_flag)
1109  CHECK(FUNC(pps_scc_extension)(ctx, rw, current));
1110  if (current->pps_extension_4bits)
1111  CHECK(FUNC(extension_data)(ctx, rw, &current->extension_data));
1112 
1113  CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
1114 
1115  return 0;
1116 }
1117 
1118 static int FUNC(aud)(CodedBitstreamContext *ctx, RWContext *rw,
1119  H265RawAUD *current)
1120 {
1121  int err;
1122 
1123  HEADER("Access Unit Delimiter");
1124 
1125  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header, HEVC_NAL_AUD));
1126 
1127  u(3, pic_type, 0, 2);
1128 
1129  CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
1130 
1131  return 0;
1132 }
1133 
1134 static int FUNC(ref_pic_lists_modification)(CodedBitstreamContext *ctx, RWContext *rw,
1135  H265RawSliceHeader *current,
1136  unsigned int num_pic_total_curr)
1137 {
1138  unsigned int entry_size;
1139  int err, i;
1140 
1141  entry_size = av_log2(num_pic_total_curr - 1) + 1;
1142 
1143  flag(ref_pic_list_modification_flag_l0);
1144  if (current->ref_pic_list_modification_flag_l0) {
1145  for (i = 0; i <= current->num_ref_idx_l0_active_minus1; i++)
1146  us(entry_size, list_entry_l0[i], 0, num_pic_total_curr - 1, 1, i);
1147  }
1148 
1149  if (current->slice_type == HEVC_SLICE_B) {
1150  flag(ref_pic_list_modification_flag_l1);
1151  if (current->ref_pic_list_modification_flag_l1) {
1152  for (i = 0; i <= current->num_ref_idx_l1_active_minus1; i++)
1153  us(entry_size, list_entry_l1[i], 0, num_pic_total_curr - 1, 1, i);
1154  }
1155  }
1156 
1157  return 0;
1158 }
1159 
1160 static int FUNC(pred_weight_table)(CodedBitstreamContext *ctx, RWContext *rw,
1161  H265RawSliceHeader *current)
1162 {
1163  CodedBitstreamH265Context *h265 = ctx->priv_data;
1164  const H265RawSPS *sps = h265->active_sps;
1165  int err, i, j;
1166  int chroma = !sps->separate_colour_plane_flag &&
1167  sps->chroma_format_idc != 0;
1168 
1169  ue(luma_log2_weight_denom, 0, 7);
1170  if (chroma)
1171  se(delta_chroma_log2_weight_denom, -7, 7);
1172  else
1173  infer(delta_chroma_log2_weight_denom, 0);
1174 
1175  for (i = 0; i <= current->num_ref_idx_l0_active_minus1; i++) {
1176  if (1 /* is not same POC and same layer_id */)
1177  flags(luma_weight_l0_flag[i], 1, i);
1178  else
1179  infer(luma_weight_l0_flag[i], 0);
1180  }
1181  if (chroma) {
1182  for (i = 0; i <= current->num_ref_idx_l0_active_minus1; i++) {
1183  if (1 /* is not same POC and same layer_id */)
1184  flags(chroma_weight_l0_flag[i], 1, i);
1185  else
1186  infer(chroma_weight_l0_flag[i], 0);
1187  }
1188  }
1189 
1190  for (i = 0; i <= current->num_ref_idx_l0_active_minus1; i++) {
1191  if (current->luma_weight_l0_flag[i]) {
1192  ses(delta_luma_weight_l0[i], -128, +127, 1, i);
1193  ses(luma_offset_l0[i],
1194  -(1 << (sps->bit_depth_luma_minus8 + 8 - 1)),
1195  ((1 << (sps->bit_depth_luma_minus8 + 8 - 1)) - 1), 1, i);
1196  } else {
1197  infer(delta_luma_weight_l0[i], 0);
1198  infer(luma_offset_l0[i], 0);
1199  }
1200  if (current->chroma_weight_l0_flag[i]) {
1201  for (j = 0; j < 2; j++) {
1202  ses(delta_chroma_weight_l0[i][j], -128, +127, 2, i, j);
1203  ses(chroma_offset_l0[i][j],
1204  -(4 << (sps->bit_depth_chroma_minus8 + 8 - 1)),
1205  ((4 << (sps->bit_depth_chroma_minus8 + 8 - 1)) - 1), 2, i, j);
1206  }
1207  } else {
1208  for (j = 0; j < 2; j++) {
1209  infer(delta_chroma_weight_l0[i][j], 0);
1210  infer(chroma_offset_l0[i][j], 0);
1211  }
1212  }
1213  }
1214 
1215  if (current->slice_type == HEVC_SLICE_B) {
1216  for (i = 0; i <= current->num_ref_idx_l1_active_minus1; i++) {
1217  if (1 /* RefPicList1[i] is not CurrPic, nor is it in a different layer */)
1218  flags(luma_weight_l1_flag[i], 1, i);
1219  else
1220  infer(luma_weight_l1_flag[i], 0);
1221  }
1222  if (chroma) {
1223  for (i = 0; i <= current->num_ref_idx_l1_active_minus1; i++) {
1224  if (1 /* RefPicList1[i] is not CurrPic, nor is it in a different layer */)
1225  flags(chroma_weight_l1_flag[i], 1, i);
1226  else
1227  infer(chroma_weight_l1_flag[i], 0);
1228  }
1229  }
1230 
1231  for (i = 0; i <= current->num_ref_idx_l1_active_minus1; i++) {
1232  if (current->luma_weight_l1_flag[i]) {
1233  ses(delta_luma_weight_l1[i], -128, +127, 1, i);
1234  ses(luma_offset_l1[i],
1235  -(1 << (sps->bit_depth_luma_minus8 + 8 - 1)),
1236  ((1 << (sps->bit_depth_luma_minus8 + 8 - 1)) - 1), 1, i);
1237  } else {
1238  infer(delta_luma_weight_l1[i], 0);
1239  infer(luma_offset_l1[i], 0);
1240  }
1241  if (current->chroma_weight_l1_flag[i]) {
1242  for (j = 0; j < 2; j++) {
1243  ses(delta_chroma_weight_l1[i][j], -128, +127, 2, i, j);
1244  ses(chroma_offset_l1[i][j],
1245  -(4 << (sps->bit_depth_chroma_minus8 + 8 - 1)),
1246  ((4 << (sps->bit_depth_chroma_minus8 + 8 - 1)) - 1), 2, i, j);
1247  }
1248  } else {
1249  for (j = 0; j < 2; j++) {
1250  infer(delta_chroma_weight_l1[i][j], 0);
1251  infer(chroma_offset_l1[i][j], 0);
1252  }
1253  }
1254  }
1255  }
1256 
1257  return 0;
1258 }
1259 
1260 static int FUNC(slice_segment_header)(CodedBitstreamContext *ctx, RWContext *rw,
1261  H265RawSliceHeader *current)
1262 {
1263  CodedBitstreamH265Context *h265 = ctx->priv_data;
1264  const H265RawSPS *sps;
1265  const H265RawPPS *pps;
1266  unsigned int min_cb_log2_size_y, ctb_log2_size_y, ctb_size_y;
1267  unsigned int pic_width_in_ctbs_y, pic_height_in_ctbs_y, pic_size_in_ctbs_y;
1268  unsigned int num_pic_total_curr = 0;
1269  int err, i;
1270 
1271  HEADER("Slice Segment Header");
1272 
1273  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header, -1));
1274 
1275  flag(first_slice_segment_in_pic_flag);
1276 
1277  if (current->nal_unit_header.nal_unit_type >= HEVC_NAL_BLA_W_LP &&
1278  current->nal_unit_header.nal_unit_type <= HEVC_NAL_IRAP_VCL23)
1279  flag(no_output_of_prior_pics_flag);
1280 
1281  ue(slice_pic_parameter_set_id, 0, 63);
1282 
1283  pps = h265->pps[current->slice_pic_parameter_set_id];
1284  if (!pps) {
1285  av_log(ctx->log_ctx, AV_LOG_ERROR, "PPS id %d not available.\n",
1286  current->slice_pic_parameter_set_id);
1287  return AVERROR_INVALIDDATA;
1288  }
1289  h265->active_pps = pps;
1290 
1291  sps = h265->sps[pps->pps_seq_parameter_set_id];
1292  if (!sps) {
1293  av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n",
1294  pps->pps_seq_parameter_set_id);
1295  return AVERROR_INVALIDDATA;
1296  }
1297  h265->active_sps = sps;
1298 
1299  min_cb_log2_size_y = sps->log2_min_luma_coding_block_size_minus3 + 3;
1300  ctb_log2_size_y = min_cb_log2_size_y + sps->log2_diff_max_min_luma_coding_block_size;
1301  ctb_size_y = 1 << ctb_log2_size_y;
1302  pic_width_in_ctbs_y =
1303  (sps->pic_width_in_luma_samples + ctb_size_y - 1) / ctb_size_y;
1304  pic_height_in_ctbs_y =
1305  (sps->pic_height_in_luma_samples + ctb_size_y - 1) / ctb_size_y;
1306  pic_size_in_ctbs_y = pic_width_in_ctbs_y * pic_height_in_ctbs_y;
1307 
1308  if (!current->first_slice_segment_in_pic_flag) {
1309  unsigned int address_size = av_log2(pic_size_in_ctbs_y - 1) + 1;
1310  if (pps->dependent_slice_segments_enabled_flag)
1311  flag(dependent_slice_segment_flag);
1312  else
1313  infer(dependent_slice_segment_flag, 0);
1314  u(address_size, slice_segment_address, 0, pic_size_in_ctbs_y - 1);
1315  } else {
1316  infer(dependent_slice_segment_flag, 0);
1317  }
1318 
1319  if (!current->dependent_slice_segment_flag) {
1320  for (i = 0; i < pps->num_extra_slice_header_bits; i++)
1321  flags(slice_reserved_flag[i], 1, i);
1322 
1323  ue(slice_type, 0, 2);
1324 
1325  if (pps->output_flag_present_flag)
1326  flag(pic_output_flag);
1327 
1328  if (sps->separate_colour_plane_flag)
1329  u(2, colour_plane_id, 0, 2);
1330 
1331  if (current->nal_unit_header.nal_unit_type != HEVC_NAL_IDR_W_RADL &&
1332  current->nal_unit_header.nal_unit_type != HEVC_NAL_IDR_N_LP) {
1333  const H265RawSTRefPicSet *rps;
1334 
1335  ub(sps->log2_max_pic_order_cnt_lsb_minus4 + 4, slice_pic_order_cnt_lsb);
1336 
1337  flag(short_term_ref_pic_set_sps_flag);
1338  if (!current->short_term_ref_pic_set_sps_flag) {
1339  CHECK(FUNC(st_ref_pic_set)(ctx, rw, &current->short_term_ref_pic_set,
1340  sps->num_short_term_ref_pic_sets, sps));
1341  rps = &current->short_term_ref_pic_set;
1342  } else if (sps->num_short_term_ref_pic_sets > 1) {
1343  unsigned int idx_size = av_log2(sps->num_short_term_ref_pic_sets - 1) + 1;
1344  u(idx_size, short_term_ref_pic_set_idx,
1345  0, sps->num_short_term_ref_pic_sets - 1);
1346  rps = &sps->st_ref_pic_set[current->short_term_ref_pic_set_idx];
1347  } else {
1348  infer(short_term_ref_pic_set_idx, 0);
1349  rps = &sps->st_ref_pic_set[0];
1350  }
1351 
1352  num_pic_total_curr = 0;
1353  for (i = 0; i < rps->num_negative_pics; i++)
1354  if (rps->used_by_curr_pic_s0_flag[i])
1355  ++num_pic_total_curr;
1356  for (i = 0; i < rps->num_positive_pics; i++)
1357  if (rps->used_by_curr_pic_s1_flag[i])
1358  ++num_pic_total_curr;
1359 
1360  if (sps->long_term_ref_pics_present_flag) {
1361  unsigned int idx_size;
1362 
1363  if (sps->num_long_term_ref_pics_sps > 0) {
1364  ue(num_long_term_sps, 0, sps->num_long_term_ref_pics_sps);
1365  idx_size = av_log2(sps->num_long_term_ref_pics_sps - 1) + 1;
1366  } else {
1367  infer(num_long_term_sps, 0);
1368  idx_size = 0;
1369  }
1370  ue(num_long_term_pics, 0, HEVC_MAX_LONG_TERM_REF_PICS);
1371 
1372  for (i = 0; i < current->num_long_term_sps +
1373  current->num_long_term_pics; i++) {
1374  if (i < current->num_long_term_sps) {
1375  if (sps->num_long_term_ref_pics_sps > 1)
1376  us(idx_size, lt_idx_sps[i],
1377  0, sps->num_long_term_ref_pics_sps - 1, 1, i);
1378  if (sps->used_by_curr_pic_lt_sps_flag[current->lt_idx_sps[i]])
1379  ++num_pic_total_curr;
1380  } else {
1381  ubs(sps->log2_max_pic_order_cnt_lsb_minus4 + 4, poc_lsb_lt[i], 1, i);
1382  flags(used_by_curr_pic_lt_flag[i], 1, i);
1383  if (current->used_by_curr_pic_lt_flag[i])
1384  ++num_pic_total_curr;
1385  }
1386  flags(delta_poc_msb_present_flag[i], 1, i);
1387  if (current->delta_poc_msb_present_flag[i])
1388  ues(delta_poc_msb_cycle_lt[i], 0, UINT32_MAX - 1, 1, i);
1389  else
1390  infer(delta_poc_msb_cycle_lt[i], 0);
1391  }
1392  }
1393 
1394  if (sps->sps_temporal_mvp_enabled_flag)
1395  flag(slice_temporal_mvp_enabled_flag);
1396  else
1397  infer(slice_temporal_mvp_enabled_flag, 0);
1398 
1399  if (pps->pps_curr_pic_ref_enabled_flag)
1400  ++num_pic_total_curr;
1401  }
1402 
1403  if (sps->sample_adaptive_offset_enabled_flag) {
1404  flag(slice_sao_luma_flag);
1405  if (!sps->separate_colour_plane_flag && sps->chroma_format_idc != 0)
1406  flag(slice_sao_chroma_flag);
1407  else
1408  infer(slice_sao_chroma_flag, 0);
1409  } else {
1410  infer(slice_sao_luma_flag, 0);
1411  infer(slice_sao_chroma_flag, 0);
1412  }
1413 
1414  if (current->slice_type == HEVC_SLICE_P ||
1415  current->slice_type == HEVC_SLICE_B) {
1416  flag(num_ref_idx_active_override_flag);
1417  if (current->num_ref_idx_active_override_flag) {
1418  ue(num_ref_idx_l0_active_minus1, 0, 14);
1419  if (current->slice_type == HEVC_SLICE_B)
1420  ue(num_ref_idx_l1_active_minus1, 0, 14);
1421  else
1422  infer(num_ref_idx_l1_active_minus1, pps->num_ref_idx_l1_default_active_minus1);
1423  } else {
1424  infer(num_ref_idx_l0_active_minus1, pps->num_ref_idx_l0_default_active_minus1);
1425  infer(num_ref_idx_l1_active_minus1, pps->num_ref_idx_l1_default_active_minus1);
1426  }
1427 
1428  if (pps->lists_modification_present_flag && num_pic_total_curr > 1)
1429  CHECK(FUNC(ref_pic_lists_modification)(ctx, rw, current,
1430  num_pic_total_curr));
1431 
1432  if (current->slice_type == HEVC_SLICE_B)
1433  flag(mvd_l1_zero_flag);
1434  if (pps->cabac_init_present_flag)
1435  flag(cabac_init_flag);
1436  else
1437  infer(cabac_init_flag, 0);
1438  if (current->slice_temporal_mvp_enabled_flag) {
1439  if (current->slice_type == HEVC_SLICE_B)
1440  flag(collocated_from_l0_flag);
1441  else
1442  infer(collocated_from_l0_flag, 1);
1443  if (current->collocated_from_l0_flag) {
1444  if (current->num_ref_idx_l0_active_minus1 > 0)
1445  ue(collocated_ref_idx, 0, current->num_ref_idx_l0_active_minus1);
1446  else
1447  infer(collocated_ref_idx, 0);
1448  } else {
1449  if (current->num_ref_idx_l1_active_minus1 > 0)
1450  ue(collocated_ref_idx, 0, current->num_ref_idx_l1_active_minus1);
1451  else
1452  infer(collocated_ref_idx, 0);
1453  }
1454  }
1455 
1456  if ((pps->weighted_pred_flag && current->slice_type == HEVC_SLICE_P) ||
1457  (pps->weighted_bipred_flag && current->slice_type == HEVC_SLICE_B))
1458  CHECK(FUNC(pred_weight_table)(ctx, rw, current));
1459 
1460  ue(five_minus_max_num_merge_cand, 0, 4);
1461  if (sps->motion_vector_resolution_control_idc == 2)
1462  flag(use_integer_mv_flag);
1463  else
1464  infer(use_integer_mv_flag, sps->motion_vector_resolution_control_idc);
1465  }
1466 
1467  se(slice_qp_delta,
1468  - 6 * sps->bit_depth_luma_minus8 - (pps->init_qp_minus26 + 26),
1469  + 51 - (pps->init_qp_minus26 + 26));
1470  if (pps->pps_slice_chroma_qp_offsets_present_flag) {
1471  se(slice_cb_qp_offset, -12, +12);
1472  se(slice_cr_qp_offset, -12, +12);
1473  } else {
1474  infer(slice_cb_qp_offset, 0);
1475  infer(slice_cr_qp_offset, 0);
1476  }
1477  if (pps->pps_slice_act_qp_offsets_present_flag) {
1478  se(slice_act_y_qp_offset,
1479  -12 - (pps->pps_act_y_qp_offset_plus5 - 5),
1480  +12 - (pps->pps_act_y_qp_offset_plus5 - 5));
1481  se(slice_act_cb_qp_offset,
1482  -12 - (pps->pps_act_cb_qp_offset_plus5 - 5),
1483  +12 - (pps->pps_act_cb_qp_offset_plus5 - 5));
1484  se(slice_act_cr_qp_offset,
1485  -12 - (pps->pps_act_cr_qp_offset_plus3 - 3),
1486  +12 - (pps->pps_act_cr_qp_offset_plus3 - 3));
1487  } else {
1488  infer(slice_act_y_qp_offset, 0);
1489  infer(slice_act_cb_qp_offset, 0);
1490  infer(slice_act_cr_qp_offset, 0);
1491  }
1492  if (pps->chroma_qp_offset_list_enabled_flag)
1493  flag(cu_chroma_qp_offset_enabled_flag);
1494  else
1495  infer(cu_chroma_qp_offset_enabled_flag, 0);
1496 
1497  if (pps->deblocking_filter_override_enabled_flag)
1498  flag(deblocking_filter_override_flag);
1499  else
1500  infer(deblocking_filter_override_flag, 0);
1501  if (current->deblocking_filter_override_flag) {
1502  flag(slice_deblocking_filter_disabled_flag);
1503  if (!current->slice_deblocking_filter_disabled_flag) {
1504  se(slice_beta_offset_div2, -6, +6);
1505  se(slice_tc_offset_div2, -6, +6);
1506  } else {
1507  infer(slice_beta_offset_div2, pps->pps_beta_offset_div2);
1508  infer(slice_tc_offset_div2, pps->pps_tc_offset_div2);
1509  }
1510  } else {
1511  infer(slice_deblocking_filter_disabled_flag,
1512  pps->pps_deblocking_filter_disabled_flag);
1513  infer(slice_beta_offset_div2, pps->pps_beta_offset_div2);
1514  infer(slice_tc_offset_div2, pps->pps_tc_offset_div2);
1515  }
1516  if (pps->pps_loop_filter_across_slices_enabled_flag &&
1517  (current->slice_sao_luma_flag || current->slice_sao_chroma_flag ||
1518  !current->slice_deblocking_filter_disabled_flag))
1519  flag(slice_loop_filter_across_slices_enabled_flag);
1520  else
1521  infer(slice_loop_filter_across_slices_enabled_flag,
1522  pps->pps_loop_filter_across_slices_enabled_flag);
1523  }
1524 
1525  if (pps->tiles_enabled_flag || pps->entropy_coding_sync_enabled_flag) {
1526  unsigned int num_entry_point_offsets_limit;
1527  if (!pps->tiles_enabled_flag && pps->entropy_coding_sync_enabled_flag)
1528  num_entry_point_offsets_limit = pic_height_in_ctbs_y - 1;
1529  else if (pps->tiles_enabled_flag && !pps->entropy_coding_sync_enabled_flag)
1530  num_entry_point_offsets_limit =
1531  (pps->num_tile_columns_minus1 + 1) * (pps->num_tile_rows_minus1 + 1);
1532  else
1533  num_entry_point_offsets_limit =
1534  (pps->num_tile_columns_minus1 + 1) * pic_height_in_ctbs_y - 1;
1535  ue(num_entry_point_offsets, 0, num_entry_point_offsets_limit);
1536 
1537  if (current->num_entry_point_offsets > HEVC_MAX_ENTRY_POINT_OFFSETS) {
1538  av_log(ctx->log_ctx, AV_LOG_ERROR, "Too many entry points: "
1539  "%"PRIu16".\n", current->num_entry_point_offsets);
1540  return AVERROR_PATCHWELCOME;
1541  }
1542 
1543  if (current->num_entry_point_offsets > 0) {
1544  ue(offset_len_minus1, 0, 31);
1545  for (i = 0; i < current->num_entry_point_offsets; i++)
1546  ubs(current->offset_len_minus1 + 1, entry_point_offset_minus1[i], 1, i);
1547  }
1548  }
1549 
1550  if (pps->slice_segment_header_extension_present_flag) {
1551  ue(slice_segment_header_extension_length, 0, 256);
1552  for (i = 0; i < current->slice_segment_header_extension_length; i++)
1553  us(8, slice_segment_header_extension_data_byte[i], 0x00, 0xff, 1, i);
1554  }
1555 
1556  CHECK(FUNC(byte_alignment)(ctx, rw));
1557 
1558  return 0;
1559 }
1560 
1561 static int FUNC(sei_buffering_period)(CodedBitstreamContext *ctx, RWContext *rw,
1562  H265RawSEIBufferingPeriod *current,
1563  uint32_t *payload_size)
1564 {
1565  CodedBitstreamH265Context *h265 = ctx->priv_data;
1566  const H265RawSPS *sps;
1567  const H265RawHRDParameters *hrd;
1568  int err, i, length;
1569 
1570 #ifdef READ
1571  int start_pos, end_pos, bits_left;
1572  start_pos = get_bits_count(rw);
1573 #endif
1574 
1575  HEADER("Buffering Period");
1576 
1577  ue(bp_seq_parameter_set_id, 0, HEVC_MAX_SPS_COUNT - 1);
1578 
1579  sps = h265->sps[current->bp_seq_parameter_set_id];
1580  if (!sps) {
1581  av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n",
1582  current->bp_seq_parameter_set_id);
1583  return AVERROR_INVALIDDATA;
1584  }
1585  h265->active_sps = sps;
1586 
1587  if (!sps->vui_parameters_present_flag ||
1588  !sps->vui.vui_hrd_parameters_present_flag) {
1589  av_log(ctx->log_ctx, AV_LOG_ERROR, "Buffering period SEI requires "
1590  "HRD parameters to be present in SPS.\n");
1591  return AVERROR_INVALIDDATA;
1592  }
1593  hrd = &sps->vui.hrd_parameters;
1594  if (!hrd->nal_hrd_parameters_present_flag &&
1595  !hrd->vcl_hrd_parameters_present_flag) {
1596  av_log(ctx->log_ctx, AV_LOG_ERROR, "Buffering period SEI requires "
1597  "NAL or VCL HRD parameters to be present.\n");
1598  return AVERROR_INVALIDDATA;
1599  }
1600 
1601  if (!hrd->sub_pic_hrd_params_present_flag)
1602  flag(irap_cpb_params_present_flag);
1603  else
1604  infer(irap_cpb_params_present_flag, 0);
1605  if (current->irap_cpb_params_present_flag) {
1606  length = hrd->au_cpb_removal_delay_length_minus1 + 1;
1607  ub(length, cpb_delay_offset);
1608  length = hrd->dpb_output_delay_length_minus1 + 1;
1609  ub(length, dpb_delay_offset);
1610  } else {
1611  infer(cpb_delay_offset, 0);
1612  infer(dpb_delay_offset, 0);
1613  }
1614 
1615  flag(concatenation_flag);
1616 
1617  length = hrd->au_cpb_removal_delay_length_minus1 + 1;
1618  ub(length, au_cpb_removal_delay_delta_minus1);
1619 
1620  if (hrd->nal_hrd_parameters_present_flag) {
1621  for (i = 0; i <= hrd->cpb_cnt_minus1[0]; i++) {
1622  length = hrd->initial_cpb_removal_delay_length_minus1 + 1;
1623 
1624  ubs(length, nal_initial_cpb_removal_delay[i], 1, i);
1625  ubs(length, nal_initial_cpb_removal_offset[i], 1, i);
1626 
1627  if (hrd->sub_pic_hrd_params_present_flag ||
1628  current->irap_cpb_params_present_flag) {
1629  ubs(length, nal_initial_alt_cpb_removal_delay[i], 1, i);
1630  ubs(length, nal_initial_alt_cpb_removal_offset[i], 1, i);
1631  }
1632  }
1633  }
1634  if (hrd->vcl_hrd_parameters_present_flag) {
1635  for (i = 0; i <= hrd->cpb_cnt_minus1[0]; i++) {
1636  length = hrd->initial_cpb_removal_delay_length_minus1 + 1;
1637 
1638  ubs(length, vcl_initial_cpb_removal_delay[i], 1, i);
1639  ubs(length, vcl_initial_cpb_removal_offset[i], 1, i);
1640 
1641  if (hrd->sub_pic_hrd_params_present_flag ||
1642  current->irap_cpb_params_present_flag) {
1643  ubs(length, vcl_initial_alt_cpb_removal_delay[i], 1, i);
1644  ubs(length, vcl_initial_alt_cpb_removal_offset[i], 1, i);
1645  }
1646  }
1647  }
1648 
1649 #ifdef READ
1650  // payload_extension_present() - true if we are before the last 1-bit
1651  // in the payload structure, which must be in the last byte.
1652  end_pos = get_bits_count(rw);
1653  bits_left = *payload_size * 8 - (end_pos - start_pos);
1654  if (bits_left > 0 &&
1655  (bits_left > 7 || ff_ctz(show_bits(rw, bits_left)) < bits_left - 1))
1656  flag(use_alt_cpb_params_flag);
1657  else
1658  infer(use_alt_cpb_params_flag, 0);
1659 #else
1660  if (current->use_alt_cpb_params_flag)
1661  flag(use_alt_cpb_params_flag);
1662 #endif
1663 
1664  return 0;
1665 }
1666 
1667 static int FUNC(sei_pic_timing)(CodedBitstreamContext *ctx, RWContext *rw,
1668  H265RawSEIPicTiming *current)
1669 {
1670  CodedBitstreamH265Context *h265 = ctx->priv_data;
1671  const H265RawSPS *sps;
1672  const H265RawHRDParameters *hrd;
1673  int err, expected_source_scan_type, i, length;
1674 
1675  HEADER("Picture Timing");
1676 
1677  sps = h265->active_sps;
1678  if (!sps) {
1679  av_log(ctx->log_ctx, AV_LOG_ERROR,
1680  "No active SPS for pic_timing.\n");
1681  return AVERROR_INVALIDDATA;
1682  }
1683 
1684  expected_source_scan_type = 2 -
1685  2 * sps->profile_tier_level.general_interlaced_source_flag -
1686  sps->profile_tier_level.general_progressive_source_flag;
1687 
1688  if (sps->vui.frame_field_info_present_flag) {
1689  u(4, pic_struct, 0, 12);
1690  u(2, source_scan_type,
1691  expected_source_scan_type >= 0 ? expected_source_scan_type : 0,
1692  expected_source_scan_type >= 0 ? expected_source_scan_type : 2);
1693  flag(duplicate_flag);
1694  } else {
1695  infer(pic_struct, 0);
1696  infer(source_scan_type,
1697  expected_source_scan_type >= 0 ? expected_source_scan_type : 2);
1698  infer(duplicate_flag, 0);
1699  }
1700 
1701  if (sps->vui_parameters_present_flag &&
1702  sps->vui.vui_hrd_parameters_present_flag)
1703  hrd = &sps->vui.hrd_parameters;
1704  else
1705  hrd = NULL;
1706  if (hrd && (hrd->nal_hrd_parameters_present_flag ||
1707  hrd->vcl_hrd_parameters_present_flag)) {
1708  length = hrd->au_cpb_removal_delay_length_minus1 + 1;
1709  ub(length, au_cpb_removal_delay_minus1);
1710 
1711  length = hrd->dpb_output_delay_length_minus1 + 1;
1712  ub(length, pic_dpb_output_delay);
1713 
1714  if (hrd->sub_pic_hrd_params_present_flag) {
1715  length = hrd->dpb_output_delay_du_length_minus1 + 1;
1716  ub(length, pic_dpb_output_du_delay);
1717  }
1718 
1719  if (hrd->sub_pic_hrd_params_present_flag &&
1720  hrd->sub_pic_cpb_params_in_pic_timing_sei_flag) {
1721  // Each decoding unit must contain at least one slice segment.
1722  ue(num_decoding_units_minus1, 0, HEVC_MAX_SLICE_SEGMENTS);
1723  flag(du_common_cpb_removal_delay_flag);
1724 
1725  length = hrd->du_cpb_removal_delay_increment_length_minus1 + 1;
1726  if (current->du_common_cpb_removal_delay_flag)
1727  ub(length, du_common_cpb_removal_delay_increment_minus1);
1728 
1729  for (i = 0; i <= current->num_decoding_units_minus1; i++) {
1730  ues(num_nalus_in_du_minus1[i],
1731  0, HEVC_MAX_SLICE_SEGMENTS, 1, i);
1732  if (!current->du_common_cpb_removal_delay_flag &&
1733  i < current->num_decoding_units_minus1)
1734  ubs(length, du_cpb_removal_delay_increment_minus1[i], 1, i);
1735  }
1736  }
1737  }
1738 
1739  return 0;
1740 }
1741 
1742 static int FUNC(sei_pan_scan_rect)(CodedBitstreamContext *ctx, RWContext *rw,
1743  H265RawSEIPanScanRect *current)
1744 {
1745  int err, i;
1746 
1747  HEADER("Pan-Scan Rectangle");
1748 
1749  ue(pan_scan_rect_id, 0, UINT32_MAX - 1);
1750  flag(pan_scan_rect_cancel_flag);
1751 
1752  if (!current->pan_scan_rect_cancel_flag) {
1753  ue(pan_scan_cnt_minus1, 0, 2);
1754 
1755  for (i = 0; i <= current->pan_scan_cnt_minus1; i++) {
1756  ses(pan_scan_rect_left_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
1757  ses(pan_scan_rect_right_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
1758  ses(pan_scan_rect_top_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
1759  ses(pan_scan_rect_bottom_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
1760  }
1761 
1762  flag(pan_scan_rect_persistence_flag);
1763  }
1764 
1765  return 0;
1766 }
1767 
1768 static int FUNC(sei_user_data_registered)(CodedBitstreamContext *ctx, RWContext *rw,
1769  H265RawSEIUserDataRegistered *current,
1770  uint32_t *payload_size)
1771 {
1772  int err, i, j;
1773 
1774  HEADER("User Data Registered ITU-T T.35");
1775 
1776  u(8, itu_t_t35_country_code, 0x00, 0xff);
1777  if (current->itu_t_t35_country_code != 0xff)
1778  i = 1;
1779  else {
1780  u(8, itu_t_t35_country_code_extension_byte, 0x00, 0xff);
1781  i = 2;
1782  }
1783 
1784 #ifdef READ
1785  if (*payload_size < i) {
1786  av_log(ctx->log_ctx, AV_LOG_ERROR,
1787  "Invalid SEI user data registered payload.\n");
1788  return AVERROR_INVALIDDATA;
1789  }
1790  current->data_length = *payload_size - i;
1791 #else
1792  *payload_size = i + current->data_length;
1793 #endif
1794 
1795  allocate(current->data, current->data_length);
1796  for (j = 0; j < current->data_length; j++)
1797  xu(8, itu_t_t35_payload_byte[i], current->data[j], 0x00, 0xff, 1, i + j);
1798 
1799  return 0;
1800 }
1801 
1802 static int FUNC(sei_user_data_unregistered)(CodedBitstreamContext *ctx, RWContext *rw,
1803  H265RawSEIUserDataUnregistered *current,
1804  uint32_t *payload_size)
1805 {
1806  int err, i;
1807 
1808  HEADER("User Data Unregistered");
1809 
1810 #ifdef READ
1811  if (*payload_size < 16) {
1812  av_log(ctx->log_ctx, AV_LOG_ERROR,
1813  "Invalid SEI user data unregistered payload.\n");
1814  return AVERROR_INVALIDDATA;
1815  }
1816  current->data_length = *payload_size - 16;
1817 #else
1818  *payload_size = 16 + current->data_length;
1819 #endif
1820 
1821  for (i = 0; i < 16; i++)
1822  us(8, uuid_iso_iec_11578[i], 0x00, 0xff, 1, i);
1823 
1824  allocate(current->data, current->data_length);
1825 
1826  for (i = 0; i < current->data_length; i++)
1827  xu(8, user_data_payload_byte[i], current->data[i], 0x00, 0xff, 1, i);
1828 
1829  return 0;
1830 }
1831 
1832 static int FUNC(sei_recovery_point)(CodedBitstreamContext *ctx, RWContext *rw,
1833  H265RawSEIRecoveryPoint *current)
1834 {
1835  int err;
1836 
1837  HEADER("Recovery Point");
1838 
1839  se(recovery_poc_cnt, -32768, 32767);
1840 
1841  flag(exact_match_flag);
1842  flag(broken_link_flag);
1843 
1844  return 0;
1845 }
1846 
1847 static int FUNC(sei_display_orientation)(CodedBitstreamContext *ctx, RWContext *rw,
1848  H265RawSEIDisplayOrientation *current)
1849 {
1850  int err;
1851 
1852  HEADER("Display Orientation");
1853 
1854  flag(display_orientation_cancel_flag);
1855  if (!current->display_orientation_cancel_flag) {
1856  flag(hor_flip);
1857  flag(ver_flip);
1858  ub(16, anticlockwise_rotation);
1859  flag(display_orientation_persistence_flag);
1860  }
1861 
1862  return 0;
1863 }
1864 
1865 static int FUNC(sei_active_parameter_sets)(CodedBitstreamContext *ctx, RWContext *rw,
1866  H265RawSEIActiveParameterSets *current)
1867 {
1868  CodedBitstreamH265Context *h265 = ctx->priv_data;
1869  const H265RawVPS *vps;
1870  int err, i;
1871 
1872  HEADER("Active Parameter Sets");
1873 
1874  u(4, active_video_parameter_set_id, 0, HEVC_MAX_VPS_COUNT);
1875  vps = h265->vps[current->active_video_parameter_set_id];
1876  if (!vps) {
1877  av_log(ctx->log_ctx, AV_LOG_ERROR, "VPS id %d not available for active "
1878  "parameter sets.\n", current->active_video_parameter_set_id);
1879  return AVERROR_INVALIDDATA;
1880  }
1881  h265->active_vps = vps;
1882 
1883  flag(self_contained_cvs_flag);
1884  flag(no_parameter_set_update_flag);
1885 
1886  ue(num_sps_ids_minus1, 0, HEVC_MAX_SPS_COUNT - 1);
1887  for (i = 0; i <= current->num_sps_ids_minus1; i++)
1888  ues(active_seq_parameter_set_id[i], 0, HEVC_MAX_SPS_COUNT - 1, 1, i);
1889 
1890  for (i = vps->vps_base_layer_internal_flag;
1891  i <= FFMIN(62, vps->vps_max_layers_minus1); i++) {
1892  ues(layer_sps_idx[i], 0, current->num_sps_ids_minus1, 1, i);
1893 
1894  if (i == 0)
1895  h265->active_sps = h265->sps[current->active_seq_parameter_set_id[current->layer_sps_idx[0]]];
1896  }
1897 
1898  return 0;
1899 }
1900 
1901 static int FUNC(sei_decoded_picture_hash)(CodedBitstreamContext *ctx, RWContext *rw,
1902  H265RawSEIDecodedPictureHash *current)
1903 {
1904  CodedBitstreamH265Context *h265 = ctx->priv_data;
1905  const H265RawSPS *sps = h265->active_sps;
1906  int err, c, i;
1907 
1908  HEADER("Decoded Picture Hash");
1909 
1910  if (!sps) {
1911  av_log(ctx->log_ctx, AV_LOG_ERROR,
1912  "No active SPS for decoded picture hash.\n");
1913  return AVERROR_INVALIDDATA;
1914  }
1915 
1916  u(8, hash_type, 0, 2);
1917 
1918  for (c = 0; c < (sps->chroma_format_idc == 0 ? 1 : 3); c++) {
1919  if (current->hash_type == 0) {
1920  for (i = 0; i < 16; i++)
1921  us(8, picture_md5[c][i], 0x00, 0xff, 2, c, i);
1922  } else if (current->hash_type == 1) {
1923  us(16, picture_crc[c], 0x0000, 0xffff, 1, c);
1924  } else if (current->hash_type == 2) {
1925  us(32, picture_checksum[c], 0x00000000, 0xffffffff, 1, c);
1926  }
1927  }
1928 
1929  return 0;
1930 }
1931 
1932 static int FUNC(sei_time_code)(CodedBitstreamContext *ctx, RWContext *rw,
1933  H265RawSEITimeCode *current)
1934 {
1935  int err, i;
1936 
1937  HEADER("Time Code");
1938 
1939  u(2, num_clock_ts, 1, 3);
1940 
1941  for (i = 0; i < current->num_clock_ts; i++) {
1942  flags(clock_timestamp_flag[i], 1, i);
1943 
1944  if (current->clock_timestamp_flag[i]) {
1945  flags(units_field_based_flag[i], 1, i);
1946  us(5, counting_type[i], 0, 6, 1, i);
1947  flags(full_timestamp_flag[i], 1, i);
1948  flags(discontinuity_flag[i], 1, i);
1949  flags(cnt_dropped_flag[i], 1, i);
1950 
1951  ubs(9, n_frames[i], 1, i);
1952 
1953  if (current->full_timestamp_flag[i]) {
1954  us(6, seconds_value[i], 0, 59, 1, i);
1955  us(6, minutes_value[i], 0, 59, 1, i);
1956  us(5, hours_value[i], 0, 23, 1, i);
1957  } else {
1958  flags(seconds_flag[i], 1, i);
1959  if (current->seconds_flag[i]) {
1960  us(6, seconds_value[i], 0, 59, 1, i);
1961  flags(minutes_flag[i], 1, i);
1962  if (current->minutes_flag[i]) {
1963  us(6, minutes_value[i], 0, 59, 1, i);
1964  flags(hours_flag[i], 1, i);
1965  if (current->hours_flag[i])
1966  us(5, hours_value[i], 0, 23, 1, i);
1967  }
1968  }
1969  }
1970 
1971  ubs(5, time_offset_length[i], 1, i);
1972  if (current->time_offset_length[i] > 0)
1973  ibs(current->time_offset_length[i], time_offset_value[i], 1, i);
1974  else
1975  infer(time_offset_value[i], 0);
1976  }
1977  }
1978 
1979  return 0;
1980 }
1981 
1982 static int FUNC(sei_mastering_display)(CodedBitstreamContext *ctx, RWContext *rw,
1983  H265RawSEIMasteringDisplayColourVolume *current)
1984 {
1985  int err, c;
1986 
1987  HEADER("Mastering Display Colour Volume");
1988 
1989  for (c = 0; c < 3; c++) {
1990  us(16, display_primaries_x[c], 0, 50000, 1, c);
1991  us(16, display_primaries_y[c], 0, 50000, 1, c);
1992  }
1993 
1994  u(16, white_point_x, 0, 50000);
1995  u(16, white_point_y, 0, 50000);
1996 
1997  u(32, max_display_mastering_luminance,
1998  1, MAX_UINT_BITS(32));
1999  u(32, min_display_mastering_luminance,
2000  0, current->max_display_mastering_luminance - 1);
2001 
2002  return 0;
2003 }
2004 
2005 static int FUNC(sei_content_light_level)(CodedBitstreamContext *ctx, RWContext *rw,
2006  H265RawSEIContentLightLevelInfo *current)
2007 {
2008  int err;
2009 
2010  HEADER("Content Light Level");
2011 
2012  ub(16, max_content_light_level);
2013  ub(16, max_pic_average_light_level);
2014 
2015  return 0;
2016 }
2017 
2018 static int FUNC(sei_alternative_transfer_characteristics)(CodedBitstreamContext *ctx,
2019  RWContext *rw,
2020  H265RawSEIAlternativeTransferCharacteristics *current)
2021 {
2022  int err;
2023 
2024  HEADER("Alternative Transfer Characteristics");
2025 
2026  ub(8, preferred_transfer_characteristics);
2027 
2028  return 0;
2029 }
2030 
2031 static int FUNC(sei_alpha_channel_info)(CodedBitstreamContext *ctx,
2032  RWContext *rw,
2033  H265RawSEIAlphaChannelInfo *current)
2034 {
2035  int err, length;
2036 
2037  HEADER("Alpha Channel Information");
2038 
2039  flag(alpha_channel_cancel_flag);
2040  if (!current->alpha_channel_cancel_flag) {
2041  ub(3, alpha_channel_use_idc);
2042  ub(3, alpha_channel_bit_depth_minus8);
2043  length = current->alpha_channel_bit_depth_minus8 + 9;
2044  ub(length, alpha_transparent_value);
2045  ub(length, alpha_opaque_value);
2046  flag(alpha_channel_incr_flag);
2047  flag(alpha_channel_clip_flag);
2048  if (current->alpha_channel_clip_flag)
2049  flag(alpha_channel_clip_type_flag);
2050  } else {
2051  infer(alpha_channel_use_idc, 2);
2052  infer(alpha_channel_incr_flag, 0);
2053  infer(alpha_channel_clip_flag, 0);
2054  }
2055 
2056  return 0;
2057 }
2058 
2059 static int FUNC(sei_payload)(CodedBitstreamContext *ctx, RWContext *rw,
2060  H265RawSEIPayload *current, int prefix)
2061 {
2062  int err, i;
2063  int start_position, end_position;
2064 
2065 #ifdef READ
2066  start_position = get_bits_count(rw);
2067 #else
2068  start_position = put_bits_count(rw);
2069 #endif
2070 
2071  switch (current->payload_type) {
2072 #define SEI_TYPE_CHECK_VALID(name, prefix_valid, suffix_valid) do { \
2073  if (prefix && !prefix_valid) { \
2074  av_log(ctx->log_ctx, AV_LOG_ERROR, "SEI type %s invalid " \
2075  "as prefix SEI!\n", #name); \
2076  return AVERROR_INVALIDDATA; \
2077  } \
2078  if (!prefix && !suffix_valid) { \
2079  av_log(ctx->log_ctx, AV_LOG_ERROR, "SEI type %s invalid " \
2080  "as suffix SEI!\n", #name); \
2081  return AVERROR_INVALIDDATA; \
2082  } \
2083  } while (0)
2084 #define SEI_TYPE_N(type, prefix_valid, suffix_valid, name) \
2085  case HEVC_SEI_TYPE_ ## type: \
2086  SEI_TYPE_CHECK_VALID(name, prefix_valid, suffix_valid); \
2087  CHECK(FUNC(sei_ ## name)(ctx, rw, &current->payload.name)); \
2088  break
2089 #define SEI_TYPE_S(type, prefix_valid, suffix_valid, name) \
2090  case HEVC_SEI_TYPE_ ## type: \
2091  SEI_TYPE_CHECK_VALID(name, prefix_valid, suffix_valid); \
2092  CHECK(FUNC(sei_ ## name)(ctx, rw, &current->payload.name, \
2093  &current->payload_size)); \
2094  break
2095 
2096  SEI_TYPE_S(BUFFERING_PERIOD, 1, 0, buffering_period);
2097  SEI_TYPE_N(PICTURE_TIMING, 1, 0, pic_timing);
2098  SEI_TYPE_N(PAN_SCAN_RECT, 1, 0, pan_scan_rect);
2099  SEI_TYPE_S(USER_DATA_REGISTERED_ITU_T_T35,
2100  1, 1, user_data_registered);
2101  SEI_TYPE_S(USER_DATA_UNREGISTERED, 1, 1, user_data_unregistered);
2102  SEI_TYPE_N(RECOVERY_POINT, 1, 0, recovery_point);
2103  SEI_TYPE_N(DISPLAY_ORIENTATION, 1, 0, display_orientation);
2104  SEI_TYPE_N(ACTIVE_PARAMETER_SETS, 1, 0, active_parameter_sets);
2105  SEI_TYPE_N(DECODED_PICTURE_HASH, 0, 1, decoded_picture_hash);
2106  SEI_TYPE_N(TIME_CODE, 1, 0, time_code);
2107  SEI_TYPE_N(MASTERING_DISPLAY_INFO, 1, 0, mastering_display);
2108  SEI_TYPE_N(CONTENT_LIGHT_LEVEL_INFO, 1, 0, content_light_level);
2109  SEI_TYPE_N(ALTERNATIVE_TRANSFER_CHARACTERISTICS,
2110  1, 0, alternative_transfer_characteristics);
2111  SEI_TYPE_N(ALPHA_CHANNEL_INFO, 1, 0, alpha_channel_info);
2112 
2113 #undef SEI_TYPE
2114  default:
2115  {
2116 #ifdef READ
2117  current->payload.other.data_length = current->payload_size;
2118 #endif
2119  allocate(current->payload.other.data, current->payload.other.data_length);
2120 
2121  for (i = 0; i < current->payload_size; i++)
2122  xu(8, payload_byte[i], current->payload.other.data[i], 0, 255,
2123  1, i);
2124  }
2125  }
2126 
2127  if (byte_alignment(rw)) {
2128  fixed(1, bit_equal_to_one, 1);
2129  while (byte_alignment(rw))
2130  fixed(1, bit_equal_to_zero, 0);
2131  }
2132 
2133 #ifdef READ
2134  end_position = get_bits_count(rw);
2135  if (end_position < start_position + 8 * current->payload_size) {
2136  av_log(ctx->log_ctx, AV_LOG_ERROR, "Incorrect SEI payload length: "
2137  "header %"PRIu32" bits, actually %d bits.\n",
2138  8 * current->payload_size,
2139  end_position - start_position);
2140  return AVERROR_INVALIDDATA;
2141  }
2142 #else
2143  end_position = put_bits_count(rw);
2144  current->payload_size = (end_position - start_position) >> 3;
2145 #endif
2146 
2147  return 0;
2148 }
2149 
2150 static int FUNC(sei)(CodedBitstreamContext *ctx, RWContext *rw,
2151  H265RawSEI *current, int prefix)
2152 {
2153  int err, k;
2154 
2155  if (prefix)
2156  HEADER("Prefix Supplemental Enhancement Information");
2157  else
2158  HEADER("Suffix Supplemental Enhancement Information");
2159 
2160  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header,
2161  prefix ? HEVC_NAL_SEI_PREFIX
2162  : HEVC_NAL_SEI_SUFFIX));
2163 
2164 #ifdef READ
2165  for (k = 0; k < H265_MAX_SEI_PAYLOADS; k++) {
2166  uint32_t payload_type = 0;
2167  uint32_t payload_size = 0;
2168  uint32_t tmp;
2169 
2170  while (show_bits(rw, 8) == 0xff) {
2171  fixed(8, ff_byte, 0xff);
2172  payload_type += 255;
2173  }
2174  xu(8, last_payload_type_byte, tmp, 0, 254, 0);
2175  payload_type += tmp;
2176 
2177  while (show_bits(rw, 8) == 0xff) {
2178  fixed(8, ff_byte, 0xff);
2179  payload_size += 255;
2180  }
2181  xu(8, last_payload_size_byte, tmp, 0, 254, 0);
2182  payload_size += tmp;
2183 
2184  current->payload[k].payload_type = payload_type;
2185  current->payload[k].payload_size = payload_size;
2186 
2187  current->payload_count++;
2188  CHECK(FUNC(sei_payload)(ctx, rw, &current->payload[k], prefix));
2189 
2190  if (!cbs_h2645_read_more_rbsp_data(rw))
2191  break;
2192  }
2193  if (k >= H265_MAX_SEI_PAYLOADS) {
2194  av_log(ctx->log_ctx, AV_LOG_ERROR, "Too many payloads in "
2195  "SEI message: found %d.\n", k);
2196  return AVERROR_INVALIDDATA;
2197  }
2198 #else
2199  for (k = 0; k < current->payload_count; k++) {
2200  PutBitContext start_state;
2201  uint32_t tmp;
2202  int need_size, i;
2203 
2204  // Somewhat clumsy: we write the payload twice when
2205  // we don't know the size in advance. This will mess
2206  // with trace output, but is otherwise harmless.
2207  start_state = *rw;
2208  need_size = !current->payload[k].payload_size;
2209  for (i = 0; i < 1 + need_size; i++) {
2210  *rw = start_state;
2211 
2212  tmp = current->payload[k].payload_type;
2213  while (tmp >= 255) {
2214  fixed(8, ff_byte, 0xff);
2215  tmp -= 255;
2216  }
2217  xu(8, last_payload_type_byte, tmp, 0, 254, 0);
2218 
2219  tmp = current->payload[k].payload_size;
2220  while (tmp >= 255) {
2221  fixed(8, ff_byte, 0xff);
2222  tmp -= 255;
2223  }
2224  xu(8, last_payload_size_byte, tmp, 0, 254, 0);
2225 
2226  CHECK(FUNC(sei_payload)(ctx, rw, &current->payload[k], prefix));
2227  }
2228  }
2229 #endif
2230 
2231  CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
2232 
2233  return 0;
2234 }
allocate
#define allocate(name, size)
Definition: cbs_h2645.c:412
NULL
#define NULL
Definition: coverity.c:32
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Definition: intmath.h:106
CodedBitstreamH265Context::pps
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Definition: cbs_h265.h:738
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Invalid data found when processing input.
Definition: error.h:59
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Definition: cbs_h265_syntax_template.c:50
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Show 1-25 bits.
Definition: get_bits.h:446
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Definition: eamad.c:83
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#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
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Definition: cbs_h265.h:360
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Definition: cbs_h265.h:315
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#define ub(width, name)
Definition: cbs_h2645.c:254
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#define xu(width, name, var, range_min, range_max, subs,...)
Definition: cbs_h2645.c:374
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Definition: cbs_h265.h:394
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Definition: cbs_h265.h:380
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Definition: get_bits.h:467
CodedBitstreamContext
Context structure for coded bitstream operations.
Definition: cbs.h:168
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const H265RawVPS * active_vps
Definition: cbs_h265.h:743
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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
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uint8_t chroma_format_idc
Definition: cbs_h265.h:264
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Definition: cbs_h2645.c:325
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const H265RawPPS * active_pps
Definition: cbs_h265.h:745
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Definition: cbs_h265.h:196
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Definition: cbs_h265_syntax_template.c:420
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Definition: cbs_av1.c:564
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Definition: cbs_h265_syntax_template.c:1832
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static int FUNC() nal_unit_header(CodedBitstreamContext *ctx, RWContext *rw, H265RawNALUnitHeader *current, int expected_nal_unit_type)
Definition: cbs_h265_syntax_template.c:30
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Definition: cbs_h265.h:50
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Definition: jpeg2000dwt.c:107
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Definition: cbs_av1.c:556
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Definition: cbs_mpeg2.c:58
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Definition: cbs_h265.h:388
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Definition: cbs_h265_syntax_template.c:1667
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int8_t pps_act_cb_qp_offset_plus5
Definition: cbs_h265.h:434
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Definition: cbs_h2645.c:268
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uint8_t sub_pic_hrd_params_present_flag
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Definition: cbs_h265.h:287
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uint8_t sub_pic_cpb_params_in_pic_timing_sei_flag
Definition: cbs_h265.h:115
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uint8_t cpb_cnt_minus1[HEVC_MAX_SUB_LAYERS]
Definition: cbs_h265.h:130
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Definition: cbs_h265.h:313
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void * priv_data
Format private data.
Definition: avformat.h:1385
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uint8_t num_short_term_ref_pic_sets
Definition: cbs_h265.h:307
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static int FUNC() sps(CodedBitstreamContext *ctx, RWContext *rw, H265RawSPS *current)
Definition: cbs_h265_syntax_template.c:737
H265RawVPS::vps_temporal_id_nesting_flag
uint8_t vps_temporal_id_nesting_flag
Definition: cbs_h265.h:200
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static int FUNC() sei_alpha_channel_info(CodedBitstreamContext *ctx, RWContext *rw, H265RawSEIAlphaChannelInfo *current)
Definition: cbs_h265_syntax_template.c:2031
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Definition: cbs_h2645.c:276
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Definition: cbs_h265.h:399
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Definition: avisynth_c.h:766
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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:1802
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static int FUNC() sps_range_extension(CodedBitstreamContext *ctx, RWContext *rw, H265RawSPS *current)
Definition: cbs_h265_syntax_template.c:689
H265_MAX_SEI_PAYLOADS
Definition: cbs_h265.h:34
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int8_t init_qp_minus26
Definition: cbs_h265.h:369
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Definition: cbs_h265.h:430
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Definition: cbs_h265.h:407
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#define infer(name, value)
Definition: cbs_av1.c:712
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Definition: cbs_h265.h:736
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Definition: cbs_h265.h:265
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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
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static int FUNC() sei_buffering_period(CodedBitstreamContext *ctx, RWContext *rw, H265RawSEIBufferingPeriod *current, uint32_t *payload_size)
Definition: cbs_h265_syntax_template.c:1561
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static int FUNC() sei_payload(CodedBitstreamContext *ctx, RWContext *rw, H265RawSEIPayload *current, int prefix)
Definition: cbs_h265_syntax_template.c:2059
ues
#define ues(name, range_min, range_max, subs,...)
Definition: cbs_h2645.c:272
H265RawPPS::pps_act_cr_qp_offset_plus3
int8_t pps_act_cr_qp_offset_plus3
Definition: cbs_h265.h:435
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uint8_t num_ref_idx_l1_default_active_minus1
Definition: cbs_h265.h:367
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static uint8_t tmp[11]
Definition: aes_ctr.c:26
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