FFmpeg  4.0
cbs_h264_syntax_template.c
Go to the documentation of this file.
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 
20 {
21  int err;
22  av_unused int one = 1, zero = 0;
23  xu(1, rbsp_stop_one_bit, one, 1, 1);
24  while (byte_alignment(rw) != 0)
25  xu(1, rbsp_alignment_zero_bit, zero, 0, 0);
26 
27  return 0;
28 }
29 
31  H264RawNALUnitHeader *current,
32  uint32_t valid_type_mask)
33 {
34  int err;
35 
36  u(1, forbidden_zero_bit, 0, 0);
37  u(2, nal_ref_idc, 0, 3);
38  u(5, nal_unit_type, 0, 31);
39 
40  if (!(1 << current->nal_unit_type & valid_type_mask)) {
41  av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid NAL unit type %d.\n",
42  current->nal_unit_type);
43  return AVERROR_INVALIDDATA;
44  }
45 
46  if (current->nal_unit_type == 14 ||
47  current->nal_unit_type == 20 ||
48  current->nal_unit_type == 21) {
49  if (current->nal_unit_type != 21)
50  flag(svc_extension_flag);
51  else
52  flag(avc_3d_extension_flag);
53 
54  if (current->svc_extension_flag) {
55  av_log(ctx->log_ctx, AV_LOG_ERROR, "SVC not supported.\n");
56  return AVERROR_PATCHWELCOME;
57 
58  } else if (current->avc_3d_extension_flag) {
59  av_log(ctx->log_ctx, AV_LOG_ERROR, "3DAVC not supported.\n");
60  return AVERROR_PATCHWELCOME;
61 
62  } else {
63  av_log(ctx->log_ctx, AV_LOG_ERROR, "MVC not supported.\n");
64  return AVERROR_PATCHWELCOME;
65  }
66  }
67 
68  return 0;
69 }
70 
72  H264RawScalingList *current,
73  int size_of_scaling_list)
74 {
75  int err, i, scale;
76 
77  scale = 8;
78  for (i = 0; i < size_of_scaling_list; i++) {
79  xse(delta_scale, current->delta_scale[i], -128, +127);
80  scale = (scale + current->delta_scale[i] + 256) % 256;
81  if (scale == 0)
82  break;
83  }
84 
85  return 0;
86 }
87 
89  H264RawHRD *current)
90 {
91  int err, i;
92 
93  ue(cpb_cnt_minus1, 0, 31);
94  u(4, bit_rate_scale, 0, 15);
95  u(4, cpb_size_scale, 0, 15);
96 
97  for (i = 0; i <= current->cpb_cnt_minus1; i++) {
98  ue(bit_rate_value_minus1[i], 0, UINT32_MAX - 1);
99  ue(cpb_size_value_minus1[i], 0, UINT32_MAX - 1);
100  flag(cbr_flag[i]);
101  }
102 
103  u(5, initial_cpb_removal_delay_length_minus1, 0, 31);
104  u(5, cpb_removal_delay_length_minus1, 0, 31);
105  u(5, dpb_output_delay_length_minus1, 0, 31);
106  u(5, time_offset_length, 0, 31);
107 
108  return 0;
109 }
110 
112  H264RawVUI *current, H264RawSPS *sps)
113 {
114  int err;
115 
116  flag(aspect_ratio_info_present_flag);
117  if (current->aspect_ratio_info_present_flag) {
118  u(8, aspect_ratio_idc, 0, 255);
119  if (current->aspect_ratio_idc == 255) {
120  u(16, sar_width, 0, 65535);
121  u(16, sar_height, 0, 65535);
122  }
123  } else {
124  infer(aspect_ratio_idc, 0);
125  }
126 
127  flag(overscan_info_present_flag);
128  if (current->overscan_info_present_flag)
129  flag(overscan_appropriate_flag);
130 
131  flag(video_signal_type_present_flag);
132  if (current->video_signal_type_present_flag) {
133  u(3, video_format, 0, 7);
134  flag(video_full_range_flag);
135  flag(colour_description_present_flag);
136  if (current->colour_description_present_flag) {
137  u(8, colour_primaries, 0, 255);
138  u(8, transfer_characteristics, 0, 255);
139  u(8, matrix_coefficients, 0, 255);
140  }
141  } else {
142  infer(video_format, 5);
143  infer(video_full_range_flag, 0);
144  infer(colour_primaries, 2);
146  infer(matrix_coefficients, 2);
147  }
148 
149  flag(chroma_loc_info_present_flag);
150  if (current->chroma_loc_info_present_flag) {
151  ue(chroma_sample_loc_type_top_field, 0, 5);
152  ue(chroma_sample_loc_type_bottom_field, 0, 5);
153  } else {
154  infer(chroma_sample_loc_type_top_field, 0);
155  infer(chroma_sample_loc_type_bottom_field, 0);
156  }
157 
158  flag(timing_info_present_flag);
159  if (current->timing_info_present_flag) {
160  u(32, num_units_in_tick, 1, UINT32_MAX);
161  u(32, time_scale, 1, UINT32_MAX);
162  flag(fixed_frame_rate_flag);
163  } else {
164  infer(fixed_frame_rate_flag, 0);
165  }
166 
167  flag(nal_hrd_parameters_present_flag);
168  if (current->nal_hrd_parameters_present_flag)
169  CHECK(FUNC(hrd_parameters)(ctx, rw, &current->nal_hrd_parameters));
170 
171  flag(vcl_hrd_parameters_present_flag);
172  if (current->vcl_hrd_parameters_present_flag)
173  CHECK(FUNC(hrd_parameters)(ctx, rw, &current->vcl_hrd_parameters));
174 
175  if (current->nal_hrd_parameters_present_flag ||
176  current->vcl_hrd_parameters_present_flag)
177  flag(low_delay_hrd_flag);
178  else
179  infer(low_delay_hrd_flag, 1 - current->fixed_frame_rate_flag);
180 
181  flag(pic_struct_present_flag);
182 
183  flag(bitstream_restriction_flag);
184  if (current->bitstream_restriction_flag) {
185  flag(motion_vectors_over_pic_boundaries_flag);
186  ue(max_bytes_per_pic_denom, 0, 16);
187  ue(max_bits_per_mb_denom, 0, 16);
188  ue(log2_max_mv_length_horizontal, 0, 16);
189  ue(log2_max_mv_length_vertical, 0, 16);
190  ue(max_num_reorder_frames, 0, H264_MAX_DPB_FRAMES);
191  ue(max_dec_frame_buffering, 0, H264_MAX_DPB_FRAMES);
192  } else {
193  infer(motion_vectors_over_pic_boundaries_flag, 1);
194  infer(max_bytes_per_pic_denom, 2);
195  infer(max_bits_per_mb_denom, 1);
196  infer(log2_max_mv_length_horizontal, 16);
197  infer(log2_max_mv_length_vertical, 16);
198 
199  if ((sps->profile_idc == 44 || sps->profile_idc == 86 ||
200  sps->profile_idc == 110 || sps->profile_idc == 110 ||
201  sps->profile_idc == 122 || sps->profile_idc == 244) &&
202  sps->constraint_set3_flag) {
203  infer(max_num_reorder_frames, 0);
204  infer(max_dec_frame_buffering, 0);
205  } else {
206  infer(max_num_reorder_frames, H264_MAX_DPB_FRAMES);
207  infer(max_dec_frame_buffering, H264_MAX_DPB_FRAMES);
208  }
209  }
210 
211  return 0;
212 }
213 
215  H264RawSPS *current)
216 {
217  int err, i;
218 
219  HEADER("Sequence Parameter Set");
220 
221  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header,
222  1 << H264_NAL_SPS));
223 
224  u(8, profile_idc, 0, 255);
225 
226  flag(constraint_set0_flag);
227  flag(constraint_set1_flag);
228  flag(constraint_set2_flag);
229  flag(constraint_set3_flag);
230  flag(constraint_set4_flag);
231  flag(constraint_set5_flag);
232 
233  u(2, reserved_zero_2bits, 0, 0);
234 
235  u(8, level_idc, 0, 255);
236 
237  ue(seq_parameter_set_id, 0, 31);
238 
239  if (current->profile_idc == 100 || current->profile_idc == 110 ||
240  current->profile_idc == 122 || current->profile_idc == 244 ||
241  current->profile_idc == 44 || current->profile_idc == 83 ||
242  current->profile_idc == 86 || current->profile_idc == 118 ||
243  current->profile_idc == 128 || current->profile_idc == 138) {
244  ue(chroma_format_idc, 0, 3);
245 
246  if (current->chroma_format_idc == 3)
247  flag(separate_colour_plane_flag);
248  else
249  infer(separate_colour_plane_flag, 0);
250 
251  ue(bit_depth_luma_minus8, 0, 6);
252  ue(bit_depth_chroma_minus8, 0, 6);
253 
254  flag(qpprime_y_zero_transform_bypass_flag);
255 
256  flag(seq_scaling_matrix_present_flag);
257  if (current->seq_scaling_matrix_present_flag) {
258  for (i = 0; i < ((current->chroma_format_idc != 3) ? 8 : 12); i++) {
259  flag(seq_scaling_list_present_flag[i]);
260  if (current->seq_scaling_list_present_flag[i]) {
261  if (i < 6)
262  CHECK(FUNC(scaling_list)(ctx, rw,
263  &current->scaling_list_4x4[i],
264  16));
265  else
266  CHECK(FUNC(scaling_list)(ctx, rw,
267  &current->scaling_list_8x8[i - 6],
268  64));
269  }
270  }
271  }
272  } else {
273  infer(chroma_format_idc, current->profile_idc == 183 ? 0 : 1);
274 
275  infer(separate_colour_plane_flag, 0);
276  infer(bit_depth_luma_minus8, 0);
277  infer(bit_depth_chroma_minus8, 0);
278  }
279 
280  ue(log2_max_frame_num_minus4, 0, 12);
281  ue(pic_order_cnt_type, 0, 2);
282 
283  if (current->pic_order_cnt_type == 0) {
284  ue(log2_max_pic_order_cnt_lsb_minus4, 0, 12);
285  } else if (current->pic_order_cnt_type == 1) {
286  flag(delta_pic_order_always_zero_flag);
287  se(offset_for_non_ref_pic, INT32_MIN + 1, INT32_MAX);
288  se(offset_for_top_to_bottom_field, INT32_MIN + 1, INT32_MAX);
289  ue(num_ref_frames_in_pic_order_cnt_cycle, 0, 255);
290 
291  for (i = 0; i < current->num_ref_frames_in_pic_order_cnt_cycle; i++)
292  se(offset_for_ref_frame[i], INT32_MIN + 1, INT32_MAX);
293  }
294 
295  ue(max_num_ref_frames, 0, H264_MAX_DPB_FRAMES);
296  flag(gaps_in_frame_num_allowed_flag);
297 
298  ue(pic_width_in_mbs_minus1, 0, H264_MAX_MB_WIDTH);
299  ue(pic_height_in_map_units_minus1, 0, H264_MAX_MB_HEIGHT);
300 
301  flag(frame_mbs_only_flag);
302  if (!current->frame_mbs_only_flag)
303  flag(mb_adaptive_frame_field_flag);
304 
305  flag(direct_8x8_inference_flag);
306 
307  flag(frame_cropping_flag);
308  if (current->frame_cropping_flag) {
309  ue(frame_crop_left_offset, 0, H264_MAX_WIDTH);
310  ue(frame_crop_right_offset, 0, H264_MAX_WIDTH);
311  ue(frame_crop_top_offset, 0, H264_MAX_HEIGHT);
312  ue(frame_crop_bottom_offset, 0, H264_MAX_HEIGHT);
313  }
314 
315  flag(vui_parameters_present_flag);
316  if (current->vui_parameters_present_flag)
317  CHECK(FUNC(vui_parameters)(ctx, rw, &current->vui, current));
318 
320 
321  return 0;
322 }
323 
325  H264RawSPSExtension *current)
326 {
327  int err;
328 
329  HEADER("Sequence Parameter Set Extension");
330 
331  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header,
332  1 << H264_NAL_SPS_EXT));
333 
334  ue(seq_parameter_set_id, 0, 31);
335 
336  ue(aux_format_idc, 0, 3);
337 
338  if (current->aux_format_idc != 0) {
339  int bits;
340 
341  ue(bit_depth_aux_minus8, 0, 4);
342  flag(alpha_incr_flag);
343 
344  bits = current->bit_depth_aux_minus8 + 9;
345  u(bits, alpha_opaque_value, 0, MAX_UINT_BITS(bits));
346  u(bits, alpha_transparent_value, 0, MAX_UINT_BITS(bits));
347  }
348 
349  flag(additional_extension_flag);
350 
352 
353  return 0;
354 }
355 
357  H264RawPPS *current)
358 {
360  const H264RawSPS *sps;
361  int err, i;
362 
363  HEADER("Picture Parameter Set");
364 
365  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header,
366  1 << H264_NAL_PPS));
367 
368  ue(pic_parameter_set_id, 0, 255);
369  ue(seq_parameter_set_id, 0, 31);
370 
371  sps = h264->sps[current->seq_parameter_set_id];
372  if (!sps) {
373  av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n",
374  current->seq_parameter_set_id);
375  return AVERROR_INVALIDDATA;
376  }
377 
378  flag(entropy_coding_mode_flag);
379  flag(bottom_field_pic_order_in_frame_present_flag);
380 
381  ue(num_slice_groups_minus1, 0, 7);
382  if (current->num_slice_groups_minus1 > 0) {
383  unsigned int pic_size;
384  int iGroup;
385 
386  pic_size = (sps->pic_width_in_mbs_minus1 + 1) *
388 
389  ue(slice_group_map_type, 0, 6);
390 
391  if (current->slice_group_map_type == 0) {
392  for (iGroup = 0; iGroup <= current->num_slice_groups_minus1; iGroup++)
393  ue(run_length_minus1[iGroup], 0, pic_size - 1);
394 
395  } else if (current->slice_group_map_type == 2) {
396  for (iGroup = 0; iGroup < current->num_slice_groups_minus1; iGroup++) {
397  ue(top_left[iGroup], 0, pic_size - 1);
398  ue(bottom_right[iGroup], current->top_left[iGroup], pic_size - 1);
399  }
400  } else if (current->slice_group_map_type == 3 ||
401  current->slice_group_map_type == 4 ||
402  current->slice_group_map_type == 5) {
403  flag(slice_group_change_direction_flag);
404  ue(slice_group_change_rate_minus1, 0, pic_size - 1);
405  } else if (current->slice_group_map_type == 6) {
406  ue(pic_size_in_map_units_minus1, pic_size - 1, pic_size - 1);
407 
408  allocate(current->slice_group_id,
409  current->pic_size_in_map_units_minus1 + 1);
410  for (i = 0; i <= current->pic_size_in_map_units_minus1; i++)
411  u(av_log2(2 * current->num_slice_groups_minus1 + 1),
412  slice_group_id[i], 0, current->num_slice_groups_minus1);
413  }
414  }
415 
416  ue(num_ref_idx_l0_default_active_minus1, 0, 31);
417  ue(num_ref_idx_l1_default_active_minus1, 0, 31);
418 
419  flag(weighted_pred_flag);
420  u(2, weighted_bipred_idc, 0, 2);
421 
422  se(pic_init_qp_minus26, -26 - 6 * sps->bit_depth_luma_minus8, +25);
423  se(pic_init_qs_minus26, -26, +25);
424  se(chroma_qp_index_offset, -12, +12);
425 
426  flag(deblocking_filter_control_present_flag);
427  flag(constrained_intra_pred_flag);
428  flag(redundant_pic_cnt_present_flag);
429 
430  if (more_rbsp_data(current->more_rbsp_data))
431  {
432  flag(transform_8x8_mode_flag);
433 
434  flag(pic_scaling_matrix_present_flag);
435  if (current->pic_scaling_matrix_present_flag) {
436  for (i = 0; i < 6 + (((sps->chroma_format_idc != 3) ? 2 : 6) *
437  current->transform_8x8_mode_flag); i++) {
438  flag(pic_scaling_list_present_flag[i]);
439  if (current->pic_scaling_list_present_flag[i]) {
440  if (i < 6)
441  CHECK(FUNC(scaling_list)(ctx, rw,
442  &current->scaling_list_4x4[i],
443  16));
444  else
445  CHECK(FUNC(scaling_list)(ctx, rw,
446  &current->scaling_list_8x8[i - 6],
447  64));
448  }
449  }
450  }
451 
452  se(second_chroma_qp_index_offset, -12, +12);
453  } else {
454  infer(transform_8x8_mode_flag, 0);
455  infer(pic_scaling_matrix_present_flag, 0);
456  infer(second_chroma_qp_index_offset, current->chroma_qp_index_offset);
457  }
458 
460 
461  return 0;
462 }
463 
465  H264RawSEIBufferingPeriod *current)
466 {
468  const H264RawSPS *sps;
469  int err, i, length;
470 
471  ue(seq_parameter_set_id, 0, 31);
472 
473  sps = h264->sps[current->seq_parameter_set_id];
474  if (!sps) {
475  av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n",
476  current->seq_parameter_set_id);
477  return AVERROR_INVALIDDATA;
478  }
479  h264->active_sps = sps;
480 
482  for (i = 0; i <= sps->vui.nal_hrd_parameters.cpb_cnt_minus1; i++) {
484  xu(length, initial_cpb_removal_delay[SchedSelIdx],
485  current->nal.initial_cpb_removal_delay[i],
486  1, MAX_UINT_BITS(length));
487  xu(length, initial_cpb_removal_delay_offset[SchedSelIdx],
488  current->nal.initial_cpb_removal_delay_offset[i],
489  0, MAX_UINT_BITS(length));
490  }
491  }
492 
494  for (i = 0; i <= sps->vui.vcl_hrd_parameters.cpb_cnt_minus1; i++) {
496  xu(length, initial_cpb_removal_delay[SchedSelIdx],
497  current->vcl.initial_cpb_removal_delay[i],
498  1, MAX_UINT_BITS(length));
499  xu(length, initial_cpb_removal_delay_offset[SchedSelIdx],
500  current->vcl.initial_cpb_removal_delay_offset[i],
501  0, MAX_UINT_BITS(length));
502  }
503  }
504 
505  return 0;
506 }
507 
509  H264RawSEIPicTimestamp *current)
510 {
512  const H264RawSPS *sps;
513  uint8_t time_offset_length;
514  int err;
515 
516  u(2, ct_type, 0, 2);
517  flag(nuit_field_based_flag);
518  u(5, counting_type, 0, 6);
519  flag(full_timestamp_flag);
520  flag(discontinuity_flag);
521  flag(cnt_dropped_flag);
522  u(8, n_frames, 0, 255);
523  if (current->full_timestamp_flag) {
524  u(6, seconds_value, 0, 59);
525  u(6, minutes_value, 0, 59);
526  u(5, hours_value, 0, 23);
527  } else {
528  flag(seconds_flag);
529  if (current->seconds_flag) {
530  u(6, seconds_value, 0, 59);
531  flag(minutes_flag);
532  if (current->minutes_flag) {
533  u(6, minutes_value, 0, 59);
534  flag(hours_flag);
535  if (current->hours_flag)
536  u(5, hours_value, 0, 23);
537  }
538  }
539  }
540 
541  sps = h264->active_sps;
543  time_offset_length = sps->vui.nal_hrd_parameters.time_offset_length;
544  else if (sps->vui.vcl_hrd_parameters_present_flag)
545  time_offset_length = sps->vui.vcl_hrd_parameters.time_offset_length;
546  else
547  time_offset_length = 24;
548 
549  if (time_offset_length > 0)
550  u(time_offset_length, time_offset,
551  0, MAX_UINT_BITS(time_offset_length));
552  else
553  infer(time_offset, 0);
554 
555  return 0;
556 }
557 
559  H264RawSEIPicTiming *current)
560 {
562  const H264RawSPS *sps;
563  int err;
564 
565  sps = h264->active_sps;
566  if (!sps) {
567  // If there is exactly one possible SPS but it is not yet active
568  // then just assume that it should be the active one.
569  int i, k = -1;
570  for (i = 0; i < H264_MAX_SPS_COUNT; i++) {
571  if (h264->sps[i]) {
572  if (k >= 0) {
573  k = -1;
574  break;
575  }
576  k = i;
577  }
578  }
579  if (k >= 0)
580  sps = h264->sps[k];
581  }
582  if (!sps) {
583  av_log(ctx->log_ctx, AV_LOG_ERROR,
584  "No active SPS for pic_timing.\n");
585  return AVERROR_INVALIDDATA;
586  }
587 
590  const H264RawHRD *hrd;
591 
593  hrd = &sps->vui.nal_hrd_parameters;
594  else if (sps->vui.vcl_hrd_parameters_present_flag)
595  hrd = &sps->vui.vcl_hrd_parameters;
596  else {
597  av_log(ctx->log_ctx, AV_LOG_ERROR,
598  "No HRD parameters for pic_timing.\n");
599  return AVERROR_INVALIDDATA;
600  }
601 
602  u(hrd->cpb_removal_delay_length_minus1 + 1, cpb_removal_delay,
604  u(hrd->dpb_output_delay_length_minus1 + 1, dpb_output_delay,
606  }
607 
608  if (sps->vui.pic_struct_present_flag) {
609  static const int num_clock_ts[9] = {
610  1, 1, 1, 2, 2, 3, 3, 2, 3
611  };
612  int i;
613 
614  u(4, pic_struct, 0, 8);
615  if (current->pic_struct > 8)
616  return AVERROR_INVALIDDATA;
617 
618  for (i = 0; i < num_clock_ts[current->pic_struct]; i++) {
619  flag(clock_timestamp_flag[i]);
620  if (current->clock_timestamp_flag[i])
621  CHECK(FUNC(sei_pic_timestamp)(ctx, rw, &current->timestamp[i]));
622  }
623  }
624 
625  return 0;
626 }
627 
630  uint32_t *payload_size)
631 {
632  int err, i, j;
633 
634  u(8, itu_t_t35_country_code, 0x00, 0xff);
635  if (current->itu_t_t35_country_code != 0xff)
636  i = 1;
637  else {
638  u(8, itu_t_t35_country_code_extension_byte, 0x00, 0xff);
639  i = 2;
640  }
641 
642 #ifdef READ
643  if (*payload_size < i) {
644  av_log(ctx->log_ctx, AV_LOG_ERROR,
645  "Invalid SEI user data registered payload.\n");
646  return AVERROR_INVALIDDATA;
647  }
648  current->data_length = *payload_size - i;
649 #else
650  *payload_size = i + current->data_length;
651 #endif
652 
653  allocate(current->data, current->data_length);
654  for (j = 0; j < current->data_length; j++)
655  xu(8, itu_t_t35_payload_byte, current->data[j], 0x00, 0xff);
656 
657  return 0;
658 }
659 
662  uint32_t *payload_size)
663 {
664  int err, i;
665 
666 #ifdef READ
667  if (*payload_size < 16) {
668  av_log(ctx->log_ctx, AV_LOG_ERROR,
669  "Invalid SEI user data unregistered payload.\n");
670  return AVERROR_INVALIDDATA;
671  }
672  current->data_length = *payload_size - 16;
673 #else
674  *payload_size = 16 + current->data_length;
675 #endif
676 
677  for (i = 0; i < 16; i++) {
678  xu(8, uuid_iso_iec_11578,
679  current->uuid_iso_iec_11578[i], 0x00, 0xff);
680  }
681 
682  allocate(current->data, current->data_length);
683 
684  for (i = 0; i < current->data_length; i++)
685  xu(8, user_data_payload_byte, current->data[i], 0x00, 0xff);
686 
687  return 0;
688 }
689 
691  H264RawSEIRecoveryPoint *current)
692 {
693  int err;
694 
695  ue(recovery_frame_cnt, 0, 65535);
696  flag(exact_match_flag);
697  flag(broken_link_flag);
698  u(2, changing_slice_group_idc, 0, 2);
699 
700  return 0;
701 }
702 
705 {
706  int err;
707 
708  flag(display_orientation_cancel_flag);
709  if (!current->display_orientation_cancel_flag) {
710  flag(hor_flip);
711  flag(ver_flip);
712  u(16, anticlockwise_rotation, 0, 65535);
713  ue(display_orientation_repetition_period, 0, 16384);
714  flag(display_orientation_extension_flag);
715  }
716 
717  return 0;
718 }
719 
721  H264RawSEIPayload *current)
722 {
723  int err, i;
724  int start_position, end_position;
725 
726 #ifdef READ
727  start_position = get_bits_count(rw);
728 #else
729  start_position = put_bits_count(rw);
730 #endif
731 
732  switch (current->payload_type) {
735  (ctx, rw, &current->payload.buffering_period));
736  break;
739  (ctx, rw, &current->payload.pic_timing));
740  break;
742  {
743  av_unused int ff_byte = 0xff;
744  for (i = 0; i < current->payload_size; i++)
745  xu(8, ff_byte, ff_byte, 0xff, 0xff);
746  }
747  break;
750  (ctx, rw, &current->payload.user_data_registered, &current->payload_size));
751  break;
754  (ctx, rw, &current->payload.user_data_unregistered, &current->payload_size));
755  break;
758  (ctx, rw, &current->payload.recovery_point));
759  break;
762  (ctx, rw, &current->payload.display_orientation));
763  break;
764  default:
765  {
766  allocate(current->payload.other.data, current->payload_size);
767  for (i = 0; i < current->payload_size; i++)
768  xu(8, payload_byte, current->payload.other.data[i], 0, 255);
769  }
770  }
771 
772  if (byte_alignment(rw)) {
773  av_unused int one = 1, zero = 0;
774  xu(1, bit_equal_to_one, one, 1, 1);
775  while (byte_alignment(rw))
776  xu(1, bit_equal_to_zero, zero, 0, 0);
777  }
778 
779 #ifdef READ
780  end_position = get_bits_count(rw);
781  if (end_position < start_position + 8 * current->payload_size) {
782  av_log(ctx->log_ctx, AV_LOG_ERROR, "Incorrect SEI payload length: "
783  "header %"PRIu32" bits, actually %d bits.\n",
784  8 * current->payload_size,
785  end_position - start_position);
786  return AVERROR_INVALIDDATA;
787  }
788 #else
789  end_position = put_bits_count(rw);
790  current->payload_size = (end_position - start_position) / 8;
791 #endif
792 
793  return 0;
794 }
795 
797  H264RawSEI *current)
798 {
799  int err, k;
800 
801  HEADER("Supplemental Enhancement Information");
802 
803  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header,
804  1 << H264_NAL_SEI));
805 
806 #ifdef READ
807  for (k = 0; k < H264_MAX_SEI_PAYLOADS; k++) {
808  uint32_t payload_type = 0;
809  uint32_t payload_size = 0;
810  uint32_t tmp;
811 
812  while (show_bits(rw, 8) == 0xff) {
813  xu(8, ff_byte, tmp, 0xff, 0xff);
814  payload_type += 255;
815  }
816  xu(8, last_payload_type_byte, tmp, 0, 254);
817  payload_type += tmp;
818 
819  while (show_bits(rw, 8) == 0xff) {
820  xu(8, ff_byte, tmp, 0xff, 0xff);
821  payload_size += 255;
822  }
823  xu(8, last_payload_size_byte, tmp, 0, 254);
824  payload_size += tmp;
825 
826  current->payload[k].payload_type = payload_type;
827  current->payload[k].payload_size = payload_size;
828 
829  CHECK(FUNC(sei_payload)(ctx, rw, &current->payload[k]));
830 
832  break;
833  }
834  if (k >= H264_MAX_SEI_PAYLOADS) {
835  av_log(ctx->log_ctx, AV_LOG_ERROR, "Too many payloads in "
836  "SEI message: found %d.\n", k);
837  return AVERROR_INVALIDDATA;
838  }
839  current->payload_count = k + 1;
840 #else
841  for (k = 0; k < current->payload_count; k++) {
842  PutBitContext start_state;
843  uint32_t tmp;
844  int need_size, i;
845 
846  // Somewhat clumsy: we write the payload twice when
847  // we don't know the size in advance. This will mess
848  // with trace output, but is otherwise harmless.
849  start_state = *rw;
850  need_size = !current->payload[k].payload_size;
851  for (i = 0; i < 1 + need_size; i++) {
852  *rw = start_state;
853 
854  tmp = current->payload[k].payload_type;
855  while (tmp >= 255) {
856  xu(8, ff_byte, 0xff, 0xff, 0xff);
857  tmp -= 255;
858  }
859  xu(8, last_payload_type_byte, tmp, 0, 254);
860 
861  tmp = current->payload[k].payload_size;
862  while (tmp >= 255) {
863  xu(8, ff_byte, 0xff, 0xff, 0xff);
864  tmp -= 255;
865  }
866  xu(8, last_payload_size_byte, tmp, 0, 254);
867 
868  CHECK(FUNC(sei_payload)(ctx, rw, &current->payload[k]));
869  }
870  }
871 #endif
872 
874 
875  return 0;
876 }
877 
879  H264RawAUD *current)
880 {
881  int err;
882 
883  HEADER("Access Unit Delimiter");
884 
885  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header,
886  1 << H264_NAL_AUD));
887 
888  u(3, primary_pic_type, 0, 7);
889 
891 
892  return 0;
893 }
894 
896  H264RawSliceHeader *current)
897 {
899  const H264RawSPS *sps = h264->active_sps;
900  int err, i, mopn;
901 
902  if (current->slice_type % 5 != 2 &&
903  current->slice_type % 5 != 4) {
904  flag(ref_pic_list_modification_flag_l0);
905  if (current->ref_pic_list_modification_flag_l0) {
906  for (i = 0; i < H264_MAX_RPLM_COUNT; i++) {
907  xue(modification_of_pic_nums_idc,
908  current->rplm_l0[i].modification_of_pic_nums_idc, 0, 3);
909 
910  mopn = current->rplm_l0[i].modification_of_pic_nums_idc;
911  if (mopn == 3)
912  break;
913 
914  if (mopn == 0 || mopn == 1)
915  xue(abs_diff_pic_num_minus1,
916  current->rplm_l0[i].abs_diff_pic_num_minus1,
917  0, (1 + current->field_pic_flag) *
918  (1 << (sps->log2_max_frame_num_minus4 + 4)));
919  else if (mopn == 2)
920  xue(long_term_pic_num,
921  current->rplm_l0[i].long_term_pic_num,
922  0, sps->max_num_ref_frames - 1);
923  }
924  }
925  }
926 
927  if (current->slice_type % 5 == 1) {
928  flag(ref_pic_list_modification_flag_l1);
929  if (current->ref_pic_list_modification_flag_l1) {
930  for (i = 0; i < H264_MAX_RPLM_COUNT; i++) {
931  xue(modification_of_pic_nums_idc,
932  current->rplm_l1[i].modification_of_pic_nums_idc, 0, 3);
933 
934  mopn = current->rplm_l1[i].modification_of_pic_nums_idc;
935  if (mopn == 3)
936  break;
937 
938  if (mopn == 0 || mopn == 1)
939  xue(abs_diff_pic_num_minus1,
940  current->rplm_l1[i].abs_diff_pic_num_minus1,
941  0, (1 + current->field_pic_flag) *
942  (1 << (sps->log2_max_frame_num_minus4 + 4)));
943  else if (mopn == 2)
944  xue(long_term_pic_num,
945  current->rplm_l1[i].long_term_pic_num,
946  0, sps->max_num_ref_frames - 1);
947  }
948  }
949  }
950 
951  return 0;
952 }
953 
955  H264RawSliceHeader *current)
956 {
958  const H264RawSPS *sps = h264->active_sps;
959  int chroma;
960  int err, i, j;
961 
962  ue(luma_log2_weight_denom, 0, 7);
963 
964  chroma = !sps->separate_colour_plane_flag && sps->chroma_format_idc != 0;
965  if (chroma)
966  ue(chroma_log2_weight_denom, 0, 7);
967 
968  for (i = 0; i <= current->num_ref_idx_l0_active_minus1; i++) {
969  flag(luma_weight_l0_flag[i]);
970  if (current->luma_weight_l0_flag[i]) {
971  se(luma_weight_l0[i], -128, +127);
972  se(luma_offset_l0[i], -128, +127);
973  }
974  if (chroma) {
975  flag(chroma_weight_l0_flag[i]);
976  if (current->chroma_weight_l0_flag[i]) {
977  for (j = 0; j < 2; j++) {
978  se(chroma_weight_l0[i][j], -128, +127);
979  se(chroma_offset_l0[i][j], -128, +127);
980  }
981  }
982  }
983  }
984 
985  if (current->slice_type % 5 == 1) {
986  for (i = 0; i <= current->num_ref_idx_l1_active_minus1; i++) {
987  flag(luma_weight_l1_flag[i]);
988  if (current->luma_weight_l1_flag[i]) {
989  se(luma_weight_l1[i], -128, +127);
990  se(luma_offset_l1[i], -128, +127);
991  }
992  if (chroma) {
993  flag(chroma_weight_l1_flag[i]);
994  if (current->chroma_weight_l1_flag[i]) {
995  for (j = 0; j < 2; j++) {
996  se(chroma_weight_l1[i][j], -128, +127);
997  se(chroma_offset_l1[i][j], -128, +127);
998  }
999  }
1000  }
1001  }
1002  }
1003 
1004  return 0;
1005 }
1006 
1008  H264RawSliceHeader *current, int idr_pic_flag)
1009 {
1011  const H264RawSPS *sps = h264->active_sps;
1012  int err, i;
1013  uint32_t mmco;
1014 
1015  if (idr_pic_flag) {
1016  flag(no_output_of_prior_pics_flag);
1017  flag(long_term_reference_flag);
1018  } else {
1019  flag(adaptive_ref_pic_marking_mode_flag);
1020  if (current->adaptive_ref_pic_marking_mode_flag) {
1021  for (i = 0; i < H264_MAX_MMCO_COUNT; i++) {
1022  xue(memory_management_control_operation,
1023  current->mmco[i].memory_management_control_operation,
1024  0, 6);
1025 
1026  mmco = current->mmco[i].memory_management_control_operation;
1027  if (mmco == 0)
1028  break;
1029 
1030  if (mmco == 1 || mmco == 3)
1031  xue(difference_of_pic_nums_minus1,
1032  current->mmco[i].difference_of_pic_nums_minus1,
1033  0, INT32_MAX);
1034  if (mmco == 2)
1035  xue(long_term_pic_num,
1036  current->mmco[i].long_term_pic_num,
1037  0, sps->max_num_ref_frames - 1);
1038  if (mmco == 3 || mmco == 6)
1039  xue(long_term_frame_idx,
1040  current->mmco[i].long_term_frame_idx,
1041  0, sps->max_num_ref_frames - 1);
1042  if (mmco == 4)
1043  xue(max_long_term_frame_idx_plus1,
1044  current->mmco[i].max_long_term_frame_idx_plus1,
1045  0, sps->max_num_ref_frames);
1046  }
1047  if (i == H264_MAX_MMCO_COUNT) {
1048  av_log(ctx->log_ctx, AV_LOG_ERROR, "Too many "
1049  "memory management control operations.\n");
1050  return AVERROR_INVALIDDATA;
1051  }
1052  }
1053  }
1054 
1055  return 0;
1056 }
1057 
1059  H264RawSliceHeader *current)
1060 {
1062  const H264RawSPS *sps;
1063  const H264RawPPS *pps;
1064  int err;
1065  int idr_pic_flag;
1066  int slice_type_i, slice_type_p, slice_type_b;
1067  int slice_type_si, slice_type_sp;
1068 
1069  HEADER("Slice Header");
1070 
1071  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header,
1072  1 << H264_NAL_SLICE |
1073  1 << H264_NAL_IDR_SLICE |
1074  1 << H264_NAL_AUXILIARY_SLICE));
1075 
1076  if (current->nal_unit_header.nal_unit_type == H264_NAL_AUXILIARY_SLICE) {
1077  if (!h264->last_slice_nal_unit_type) {
1078  av_log(ctx->log_ctx, AV_LOG_ERROR, "Auxiliary slice "
1079  "is not decodable without the main picture "
1080  "in the same access unit.\n");
1081  return AVERROR_INVALIDDATA;
1082  }
1083  } else {
1084  h264->last_slice_nal_unit_type =
1085  current->nal_unit_header.nal_unit_type;
1086  }
1087  idr_pic_flag = h264->last_slice_nal_unit_type == H264_NAL_IDR_SLICE;
1088 
1089  ue(first_mb_in_slice, 0, H264_MAX_MB_PIC_SIZE - 1);
1090  ue(slice_type, 0, 9);
1091 
1092  slice_type_i = current->slice_type % 5 == 2;
1093  slice_type_p = current->slice_type % 5 == 0;
1094  slice_type_b = current->slice_type % 5 == 1;
1095  slice_type_si = current->slice_type % 5 == 4;
1096  slice_type_sp = current->slice_type % 5 == 3;
1097 
1098  if (idr_pic_flag && !(slice_type_i || slice_type_si)) {
1099  av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid slice type %d "
1100  "for IDR picture.\n", current->slice_type);
1101  return AVERROR_INVALIDDATA;
1102  }
1103 
1104  ue(pic_parameter_set_id, 0, 255);
1105 
1106  pps = h264->pps[current->pic_parameter_set_id];
1107  if (!pps) {
1108  av_log(ctx->log_ctx, AV_LOG_ERROR, "PPS id %d not available.\n",
1109  current->pic_parameter_set_id);
1110  return AVERROR_INVALIDDATA;
1111  }
1112  h264->active_pps = pps;
1113 
1114  sps = h264->sps[pps->seq_parameter_set_id];
1115  if (!sps) {
1116  av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n",
1117  pps->seq_parameter_set_id);
1118  return AVERROR_INVALIDDATA;
1119  }
1120  h264->active_sps = sps;
1121 
1122  if (sps->separate_colour_plane_flag)
1123  u(2, colour_plane_id, 0, 2);
1124 
1125  u(sps->log2_max_frame_num_minus4 + 4, frame_num,
1127 
1128  if (!sps->frame_mbs_only_flag) {
1129  flag(field_pic_flag);
1130  if (current->field_pic_flag)
1131  flag(bottom_field_flag);
1132  else
1133  infer(bottom_field_flag, 0);
1134  } else {
1135  infer(field_pic_flag, 0);
1136  infer(bottom_field_flag, 0);
1137  }
1138 
1139  if (idr_pic_flag)
1140  ue(idr_pic_id, 0, 65535);
1141 
1142  if (sps->pic_order_cnt_type == 0) {
1143  u(sps->log2_max_pic_order_cnt_lsb_minus4 + 4, pic_order_cnt_lsb,
1146  !current->field_pic_flag)
1147  se(delta_pic_order_cnt_bottom, INT32_MIN + 1, INT32_MAX);
1148 
1149  } else if (sps->pic_order_cnt_type == 1) {
1151  se(delta_pic_order_cnt[0], INT32_MIN + 1, INT32_MAX);
1153  !current->field_pic_flag)
1154  se(delta_pic_order_cnt[1], INT32_MIN + 1, INT32_MAX);
1155  else
1156  infer(delta_pic_order_cnt[1], 0);
1157  } else {
1158  infer(delta_pic_order_cnt[0], 0);
1159  infer(delta_pic_order_cnt[1], 0);
1160  }
1161  }
1162 
1164  ue(redundant_pic_cnt, 0, 127);
1165 
1166  if (slice_type_b)
1167  flag(direct_spatial_mv_pred_flag);
1168 
1169  if (slice_type_p || slice_type_sp || slice_type_b) {
1170  flag(num_ref_idx_active_override_flag);
1171  if (current->num_ref_idx_active_override_flag) {
1172  ue(num_ref_idx_l0_active_minus1, 0, 31);
1173  if (slice_type_b)
1174  ue(num_ref_idx_l1_active_minus1, 0, 31);
1175  } else {
1176  infer(num_ref_idx_l0_active_minus1,
1178  infer(num_ref_idx_l1_active_minus1,
1180  }
1181  }
1182 
1183  if (current->nal_unit_header.nal_unit_type == 20 ||
1184  current->nal_unit_header.nal_unit_type == 21) {
1185  av_log(ctx->log_ctx, AV_LOG_ERROR, "MVC / 3DAVC not supported.\n");
1186  return AVERROR_PATCHWELCOME;
1187  } else {
1188  CHECK(FUNC(ref_pic_list_modification)(ctx, rw, current));
1189  }
1190 
1191  if ((pps->weighted_pred_flag && (slice_type_p || slice_type_sp)) ||
1192  (pps->weighted_bipred_idc == 1 && slice_type_b)) {
1193  CHECK(FUNC(pred_weight_table)(ctx, rw, current));
1194  }
1195 
1196  if (current->nal_unit_header.nal_ref_idc != 0) {
1197  CHECK(FUNC(dec_ref_pic_marking)(ctx, rw, current, idr_pic_flag));
1198  }
1199 
1200  if (pps->entropy_coding_mode_flag &&
1201  !slice_type_i && !slice_type_si) {
1202  ue(cabac_init_idc, 0, 2);
1203  }
1204 
1205  se(slice_qp_delta, - 51 - 6 * sps->bit_depth_luma_minus8,
1206  + 51 + 6 * sps->bit_depth_luma_minus8);
1207  if (slice_type_sp || slice_type_si) {
1208  if (slice_type_sp)
1209  flag(sp_for_switch_flag);
1210  se(slice_qs_delta, -51, +51);
1211  }
1212 
1214  ue(disable_deblocking_filter_idc, 0, 2);
1215  if (current->disable_deblocking_filter_idc != 1) {
1216  se(slice_alpha_c0_offset_div2, -6, +6);
1217  se(slice_beta_offset_div2, -6, +6);
1218  } else {
1219  infer(slice_alpha_c0_offset_div2, 0);
1220  infer(slice_beta_offset_div2, 0);
1221  }
1222  } else {
1223  infer(disable_deblocking_filter_idc, 0);
1224  infer(slice_alpha_c0_offset_div2, 0);
1225  infer(slice_beta_offset_div2, 0);
1226  }
1227 
1228  if (pps->num_slice_groups_minus1 > 0 &&
1229  pps->slice_group_map_type >= 3 &&
1230  pps->slice_group_map_type <= 5) {
1231  unsigned int pic_size, max, bits;
1232 
1233  pic_size = (sps->pic_width_in_mbs_minus1 + 1) *
1234  (sps->pic_height_in_map_units_minus1 + 1);
1235  max = (pic_size + pps->slice_group_change_rate_minus1) /
1236  (pps->slice_group_change_rate_minus1 + 1);
1237  bits = av_log2(2 * max - 1);
1238 
1239  u(bits, slice_group_change_cycle, 0, max);
1240  }
1241 
1242  if (pps->entropy_coding_mode_flag) {
1243  av_unused int one = 1;
1244  while (byte_alignment(rw))
1245  xu(1, cabac_alignment_one_bit, one, 1, 1);
1246  }
1247 
1248  return 0;
1249 }
1250 
1252  H264RawFiller *current)
1253 {
1254  av_unused int ff_byte = 0xff;
1255  int err;
1256 
1257  HEADER("Filler Data");
1258 
1259  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header,
1260  1 << H264_NAL_FILLER_DATA));
1261 
1262 #ifdef READ
1263  while (show_bits(rw, 8) == 0xff) {
1264  xu(8, ff_byte, ff_byte, 0xff, 0xff);
1265  ++current->filler_size;
1266  }
1267 #else
1268  {
1269  uint32_t i;
1270  for (i = 0; i < current->filler_size; i++)
1271  xu(8, ff_byte, ff_byte, 0xff, 0xff);
1272  }
1273 #endif
1274 
1276 
1277  return 0;
1278 }
#define allocate(name, size)
Definition: cbs_h2645.c:365
uint8_t deblocking_filter_control_present_flag
Definition: cbs_h264.h:212
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
static int FUNC() dec_ref_pic_marking(CodedBitstreamContext *ctx, RWContext *rw, H264RawSliceHeader *current, int idr_pic_flag)
#define se(name, range_min, range_max)
Definition: cbs_h2645.c:349
#define flag(name)
Definition: cbs_h2645.c:346
static av_always_inline void chroma(WaveformContext *s, AVFrame *in, AVFrame *out, int component, int intensity, int offset_y, int offset_x, int column, int mirror)
Definition: vf_waveform.c:1386
uint8_t dpb_output_delay_length_minus1
Definition: cbs_h264.h:64
uint8_t initial_cpb_removal_delay_length_minus1
Definition: cbs_h264.h:62
H264RawPPS * pps[H264_MAX_PPS_COUNT]
Definition: cbs_h264.h:425
uint8_t log2_max_frame_num_minus4
Definition: cbs_h264.h:138
static int FUNC() sps_extension(CodedBitstreamContext *ctx, RWContext *rw, H264RawSPSExtension *current)
uint8_t time_offset_length
Definition: cbs_h264.h:65
H264RawVUI vui
Definition: cbs_h264.h:164
static int FUNC() sei_display_orientation(CodedBitstreamContext *ctx, RWContext *rw, H264RawSEIDisplayOrientation *current)
static int FUNC() scaling_list(CodedBitstreamContext *ctx, RWContext *rw, H264RawScalingList *current, int size_of_scaling_list)
uint8_t weighted_pred_flag
Definition: cbs_h264.h:205
H264RawHRD nal_hrd_parameters
Definition: cbs_h264.h:95
static int FUNC() sei_payload(CodedBitstreamContext *ctx, RWContext *rw, H264RawSEIPayload *current)
uint8_t
uint16_t pic_width_in_mbs_minus1
Definition: cbs_h264.h:150
#define MAX_UINT_BITS(length)
Definition: cbs_internal.h:84
unregistered user data
Definition: h264_sei.h:32
#define u(width, name, range_min, range_max)
Definition: cbs_h2645.c:344
display orientation
Definition: h264_sei.h:35
static int FUNC() pred_weight_table(CodedBitstreamContext *ctx, RWContext *rw, H264RawSliceHeader *current)
static int get_bits_count(const GetBitContext *s)
Definition: get_bits.h:200
H264RawSPS * sps[H264_MAX_SPS_COUNT]
Definition: cbs_h264.h:424
static int FUNC() slice_header(CodedBitstreamContext *ctx, RWContext *rw, H264RawSliceHeader *current)
#define infer(name, value)
Definition: cbs_h2645.c:352
#define av_log(a,...)
uint8_t nal_hrd_parameters_present_flag
Definition: cbs_h264.h:94
uint8_t bit_depth_luma_minus8
Definition: cbs_h264.h:129
uint8_t slice_group_map_type
Definition: cbs_h264.h:191
buffering period (H.264, D.1.1)
Definition: h264_sei.h:28
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
#define FUNC(a)
uint8_t max_num_ref_frames
Definition: cbs_h264.h:147
uint8_t weighted_bipred_idc
Definition: cbs_h264.h:206
#define ue(name, range_min, range_max)
Definition: cbs_h2645.c:347
static int FUNC() rbsp_trailing_bits(CodedBitstreamContext *ctx, RWContext *rw)
#define zero
Definition: regdef.h:64
uint8_t num_ref_idx_l1_default_active_minus1
Definition: cbs_h264.h:203
uint8_t frame_mbs_only_flag
Definition: cbs_h264.h:153
static int put_bits_count(PutBitContext *s)
Definition: put_bits.h:85
uint8_t seq_parameter_set_id
Definition: cbs_h264.h:185
static int FUNC() sei_recovery_point(CodedBitstreamContext *ctx, RWContext *rw, H264RawSEIRecoveryPoint *current)
static const struct TransferCharacteristics transfer_characteristics[AVCOL_TRC_NB]
picture timing
Definition: h264_sei.h:29
static int FUNC() ref_pic_list_modification(CodedBitstreamContext *ctx, RWContext *rw, H264RawSliceHeader *current)
uint8_t separate_colour_plane_flag
Definition: cbs_h264.h:128
uint8_t last_slice_nal_unit_type
Definition: cbs_h264.h:436
AVFormatContext * ctx
Definition: movenc.c:48
static unsigned int show_bits(GetBitContext *s, int n)
Show 1-25 bits.
Definition: get_bits.h:304
static int FUNC() sei_pic_timestamp(CodedBitstreamContext *ctx, RWContext *rw, H264RawSEIPicTimestamp *current)
#define more_rbsp_data(var)
Definition: cbs_h2645.c:361
uint8_t chroma_format_idc
Definition: cbs_h264.h:127
static int FUNC() hrd_parameters(CodedBitstreamContext *ctx, RWContext *rw, H264RawHRD *current)
#define av_log2
Definition: intmath.h:83
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
static int FUNC() vui_parameters(CodedBitstreamContext *ctx, RWContext *rw, H264RawVUI *current, H264RawSPS *sps)
uint8_t cpb_cnt_minus1
Definition: cbs_h264.h:54
static int FUNC() nal_unit_header(CodedBitstreamContext *ctx, RWContext *rw, H264RawNALUnitHeader *current, uint32_t valid_type_mask)
uint8_t num_slice_groups_minus1
Definition: cbs_h264.h:190
uint8_t bottom_field_pic_order_in_frame_present_flag
Definition: cbs_h264.h:188
uint8_t entropy_coding_mode_flag
Definition: cbs_h264.h:187
#define byte_alignment(rw)
Definition: cbs_h2645.c:363
static int FUNC() aud(CodedBitstreamContext *ctx, RWContext *rw, H264RawAUD *current)
uint8_t pic_order_cnt_type
Definition: cbs_h264.h:139
static int FUNC() pps(CodedBitstreamContext *ctx, RWContext *rw, H264RawPPS *current)
Context structure for coded bitstream operations.
Definition: cbs.h:156
uint8_t num_ref_idx_l0_default_active_minus1
Definition: cbs_h264.h:202
CHECK(-1) CHECK(-2) }} }} CHECK(1) CHECK(2) }} }} } if(diff0+diff1 > 0) temp -
static int FUNC() sps(CodedBitstreamContext *ctx, RWContext *rw, H264RawSPS *current)
recovery point (frame # to decoder sync)
Definition: h264_sei.h:33
static int cbs_h2645_read_more_rbsp_data(GetBitContext *gbc)
Definition: cbs_h2645.c:279
registered user data as specified by Rec. ITU-T T.35
Definition: h264_sei.h:31
static int FUNC() filler(CodedBitstreamContext *ctx, RWContext *rw, H264RawFiller *current)
static int FUNC() sei_user_data_registered(CodedBitstreamContext *ctx, RWContext *rw, H264RawSEIUserDataRegistered *current, uint32_t *payload_size)
uint8_t redundant_pic_cnt_present_flag
Definition: cbs_h264.h:217
uint8_t pic_struct_present_flag
Definition: cbs_h264.h:100
uint8_t cpb_removal_delay_length_minus1
Definition: cbs_h264.h:63
static int FUNC() sei_user_data_unregistered(CodedBitstreamContext *ctx, RWContext *rw, H264RawSEIUserDataUnregistered *current, uint32_t *payload_size)
static int FUNC() sei(CodedBitstreamContext *ctx, RWContext *rw, H264RawSEI *current)
static int FUNC() sei_buffering_period(CodedBitstreamContext *ctx, RWContext *rw, H264RawSEIBufferingPeriod *current)
#define xse(name, var, range_min, range_max)
Definition: cbs_h2645.c:338
static int FUNC() sei_pic_timing(CodedBitstreamContext *ctx, RWContext *rw, H264RawSEIPicTiming *current)
#define HEADER(name)
Definition: cbs_h2645.c:228
#define xue(name, var, range_min, range_max)
Definition: cbs_h2645.c:333
uint8_t log2_max_pic_order_cnt_lsb_minus4
Definition: cbs_h264.h:140
void * priv_data
Format private data.
Definition: avformat.h:1370
uint8_t delta_pic_order_always_zero_flag
Definition: cbs_h264.h:141
const H264RawPPS * active_pps
Definition: cbs_h264.h:431
#define RWContext
Definition: cbs_h2645.c:326
const char int length
Definition: avisynth_c.h:768
uint16_t pic_height_in_map_units_minus1
Definition: cbs_h264.h:151
#define xu(width, name, var, range_min, range_max)
Definition: cbs_h2645.c:328
#define av_unused
Definition: attributes.h:125
uint8_t vcl_hrd_parameters_present_flag
Definition: cbs_h264.h:96
H264RawHRD vcl_hrd_parameters
Definition: cbs_h264.h:97
const H264RawSPS * active_sps
Definition: cbs_h264.h:430
uint16_t slice_group_change_rate_minus1
Definition: cbs_h264.h:196
static uint8_t tmp[11]
Definition: aes_ctr.c:26