FFmpeg
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 
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  H264RawNALUnitHeader *current,
32  uint32_t valid_type_mask)
33 {
34  int err;
35 
36  fixed(1, forbidden_zero_bit, 0);
37  ub(2, nal_ref_idc);
38  ub(5, nal_unit_type);
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 
71 static int FUNC(scaling_list)(CodedBitstreamContext *ctx, RWContext *rw,
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  ses(delta_scale[i], -128, +127, 1, i);
80  scale = (scale + current->delta_scale[i] + 256) % 256;
81  if (scale == 0)
82  break;
83  }
84 
85  return 0;
86 }
87 
88 static int FUNC(hrd_parameters)(CodedBitstreamContext *ctx, RWContext *rw,
89  H264RawHRD *current)
90 {
91  int err, i;
92 
93  ue(cpb_cnt_minus1, 0, 31);
94  ub(4, bit_rate_scale);
95  ub(4, cpb_size_scale);
96 
97  for (i = 0; i <= current->cpb_cnt_minus1; i++) {
98  ues(bit_rate_value_minus1[i], 0, UINT32_MAX - 1, 1, i);
99  ues(cpb_size_value_minus1[i], 0, UINT32_MAX - 1, 1, i);
100  flags(cbr_flag[i], 1, i);
101  }
102 
103  ub(5, initial_cpb_removal_delay_length_minus1);
104  ub(5, cpb_removal_delay_length_minus1);
105  ub(5, dpb_output_delay_length_minus1);
106  ub(5, time_offset_length);
107 
108  return 0;
109 }
110 
111 static int FUNC(vui_parameters)(CodedBitstreamContext *ctx, RWContext *rw,
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  ub(8, aspect_ratio_idc);
119  if (current->aspect_ratio_idc == 255) {
120  ub(16, sar_width);
121  ub(16, sar_height);
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  ub(3, video_format);
134  flag(video_full_range_flag);
135  flag(colour_description_present_flag);
136  if (current->colour_description_present_flag) {
137  ub(8, colour_primaries);
138  ub(8, transfer_characteristics);
139  ub(8, matrix_coefficients);
140  } else {
141  infer(colour_primaries, 2);
142  infer(transfer_characteristics, 2);
143  infer(matrix_coefficients, 2);
144  }
145  } else {
146  infer(video_format, 5);
147  infer(video_full_range_flag, 0);
148  infer(colour_primaries, 2);
149  infer(transfer_characteristics, 2);
150  infer(matrix_coefficients, 2);
151  }
152 
153  flag(chroma_loc_info_present_flag);
154  if (current->chroma_loc_info_present_flag) {
155  ue(chroma_sample_loc_type_top_field, 0, 5);
156  ue(chroma_sample_loc_type_bottom_field, 0, 5);
157  } else {
158  infer(chroma_sample_loc_type_top_field, 0);
159  infer(chroma_sample_loc_type_bottom_field, 0);
160  }
161 
162  flag(timing_info_present_flag);
163  if (current->timing_info_present_flag) {
164  u(32, num_units_in_tick, 1, UINT32_MAX);
165  u(32, time_scale, 1, UINT32_MAX);
166  flag(fixed_frame_rate_flag);
167  } else {
168  infer(fixed_frame_rate_flag, 0);
169  }
170 
171  flag(nal_hrd_parameters_present_flag);
172  if (current->nal_hrd_parameters_present_flag)
173  CHECK(FUNC(hrd_parameters)(ctx, rw, &current->nal_hrd_parameters));
174 
175  flag(vcl_hrd_parameters_present_flag);
176  if (current->vcl_hrd_parameters_present_flag)
177  CHECK(FUNC(hrd_parameters)(ctx, rw, &current->vcl_hrd_parameters));
178 
179  if (current->nal_hrd_parameters_present_flag ||
180  current->vcl_hrd_parameters_present_flag)
181  flag(low_delay_hrd_flag);
182  else
183  infer(low_delay_hrd_flag, 1 - current->fixed_frame_rate_flag);
184 
185  flag(pic_struct_present_flag);
186 
187  flag(bitstream_restriction_flag);
188  if (current->bitstream_restriction_flag) {
189  flag(motion_vectors_over_pic_boundaries_flag);
190  ue(max_bytes_per_pic_denom, 0, 16);
191  ue(max_bits_per_mb_denom, 0, 16);
192  // The current version of the standard constrains this to be in
193  // [0,15], but older versions allow 16.
194  ue(log2_max_mv_length_horizontal, 0, 16);
195  ue(log2_max_mv_length_vertical, 0, 16);
196  ue(max_num_reorder_frames, 0, H264_MAX_DPB_FRAMES);
197  ue(max_dec_frame_buffering, 0, H264_MAX_DPB_FRAMES);
198  } else {
199  infer(motion_vectors_over_pic_boundaries_flag, 1);
200  infer(max_bytes_per_pic_denom, 2);
201  infer(max_bits_per_mb_denom, 1);
202  infer(log2_max_mv_length_horizontal, 15);
203  infer(log2_max_mv_length_vertical, 15);
204 
205  if ((sps->profile_idc == 44 || sps->profile_idc == 86 ||
206  sps->profile_idc == 100 || sps->profile_idc == 110 ||
207  sps->profile_idc == 122 || sps->profile_idc == 244) &&
208  sps->constraint_set3_flag) {
209  infer(max_num_reorder_frames, 0);
210  infer(max_dec_frame_buffering, 0);
211  } else {
212  infer(max_num_reorder_frames, H264_MAX_DPB_FRAMES);
213  infer(max_dec_frame_buffering, H264_MAX_DPB_FRAMES);
214  }
215  }
216 
217  return 0;
218 }
219 
220 static int FUNC(vui_parameters_default)(CodedBitstreamContext *ctx,
221  RWContext *rw, H264RawVUI *current,
222  H264RawSPS *sps)
223 {
224  infer(aspect_ratio_idc, 0);
225 
226  infer(video_format, 5);
227  infer(video_full_range_flag, 0);
228  infer(colour_primaries, 2);
229  infer(transfer_characteristics, 2);
230  infer(matrix_coefficients, 2);
231 
232  infer(chroma_sample_loc_type_top_field, 0);
233  infer(chroma_sample_loc_type_bottom_field, 0);
234 
235  infer(fixed_frame_rate_flag, 0);
236  infer(low_delay_hrd_flag, 1);
237 
238  infer(pic_struct_present_flag, 0);
239 
240  infer(motion_vectors_over_pic_boundaries_flag, 1);
241  infer(max_bytes_per_pic_denom, 2);
242  infer(max_bits_per_mb_denom, 1);
243  infer(log2_max_mv_length_horizontal, 15);
244  infer(log2_max_mv_length_vertical, 15);
245 
246  if ((sps->profile_idc == 44 || sps->profile_idc == 86 ||
247  sps->profile_idc == 100 || sps->profile_idc == 110 ||
248  sps->profile_idc == 122 || sps->profile_idc == 244) &&
249  sps->constraint_set3_flag) {
250  infer(max_num_reorder_frames, 0);
251  infer(max_dec_frame_buffering, 0);
252  } else {
253  infer(max_num_reorder_frames, H264_MAX_DPB_FRAMES);
254  infer(max_dec_frame_buffering, H264_MAX_DPB_FRAMES);
255  }
256 
257  return 0;
258 }
259 
260 static int FUNC(sps)(CodedBitstreamContext *ctx, RWContext *rw,
261  H264RawSPS *current)
262 {
263  int err, i;
264 
265  HEADER("Sequence Parameter Set");
266 
267  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header,
268  1 << H264_NAL_SPS));
269 
270  ub(8, profile_idc);
271 
272  flag(constraint_set0_flag);
273  flag(constraint_set1_flag);
274  flag(constraint_set2_flag);
275  flag(constraint_set3_flag);
276  flag(constraint_set4_flag);
277  flag(constraint_set5_flag);
278 
279  u(2, reserved_zero_2bits, 0, 0);
280 
281  ub(8, level_idc);
282 
283  ue(seq_parameter_set_id, 0, 31);
284 
285  if (current->profile_idc == 100 || current->profile_idc == 110 ||
286  current->profile_idc == 122 || current->profile_idc == 244 ||
287  current->profile_idc == 44 || current->profile_idc == 83 ||
288  current->profile_idc == 86 || current->profile_idc == 118 ||
289  current->profile_idc == 128 || current->profile_idc == 138) {
290  ue(chroma_format_idc, 0, 3);
291 
292  if (current->chroma_format_idc == 3)
293  flag(separate_colour_plane_flag);
294  else
295  infer(separate_colour_plane_flag, 0);
296 
297  ue(bit_depth_luma_minus8, 0, 6);
298  ue(bit_depth_chroma_minus8, 0, 6);
299 
300  flag(qpprime_y_zero_transform_bypass_flag);
301 
302  flag(seq_scaling_matrix_present_flag);
303  if (current->seq_scaling_matrix_present_flag) {
304  for (i = 0; i < ((current->chroma_format_idc != 3) ? 8 : 12); i++) {
305  flags(seq_scaling_list_present_flag[i], 1, i);
306  if (current->seq_scaling_list_present_flag[i]) {
307  if (i < 6)
308  CHECK(FUNC(scaling_list)(ctx, rw,
309  &current->scaling_list_4x4[i],
310  16));
311  else
312  CHECK(FUNC(scaling_list)(ctx, rw,
313  &current->scaling_list_8x8[i - 6],
314  64));
315  }
316  }
317  }
318  } else {
319  infer(chroma_format_idc, current->profile_idc == 183 ? 0 : 1);
320 
321  infer(separate_colour_plane_flag, 0);
322  infer(bit_depth_luma_minus8, 0);
323  infer(bit_depth_chroma_minus8, 0);
324  }
325 
326  ue(log2_max_frame_num_minus4, 0, 12);
327  ue(pic_order_cnt_type, 0, 2);
328 
329  if (current->pic_order_cnt_type == 0) {
330  ue(log2_max_pic_order_cnt_lsb_minus4, 0, 12);
331  } else if (current->pic_order_cnt_type == 1) {
332  flag(delta_pic_order_always_zero_flag);
333  se(offset_for_non_ref_pic, INT32_MIN + 1, INT32_MAX);
334  se(offset_for_top_to_bottom_field, INT32_MIN + 1, INT32_MAX);
335  ue(num_ref_frames_in_pic_order_cnt_cycle, 0, 255);
336 
337  for (i = 0; i < current->num_ref_frames_in_pic_order_cnt_cycle; i++)
338  ses(offset_for_ref_frame[i], INT32_MIN + 1, INT32_MAX, 1, i);
339  }
340 
341  ue(max_num_ref_frames, 0, H264_MAX_DPB_FRAMES);
342  flag(gaps_in_frame_num_allowed_flag);
343 
344  ue(pic_width_in_mbs_minus1, 0, H264_MAX_MB_WIDTH);
345  ue(pic_height_in_map_units_minus1, 0, H264_MAX_MB_HEIGHT);
346 
347  flag(frame_mbs_only_flag);
348  if (!current->frame_mbs_only_flag)
349  flag(mb_adaptive_frame_field_flag);
350 
351  flag(direct_8x8_inference_flag);
352 
353  flag(frame_cropping_flag);
354  if (current->frame_cropping_flag) {
355  ue(frame_crop_left_offset, 0, H264_MAX_WIDTH);
356  ue(frame_crop_right_offset, 0, H264_MAX_WIDTH);
357  ue(frame_crop_top_offset, 0, H264_MAX_HEIGHT);
358  ue(frame_crop_bottom_offset, 0, H264_MAX_HEIGHT);
359  }
360 
361  flag(vui_parameters_present_flag);
362  if (current->vui_parameters_present_flag)
363  CHECK(FUNC(vui_parameters)(ctx, rw, &current->vui, current));
364  else
365  CHECK(FUNC(vui_parameters_default)(ctx, rw, &current->vui, current));
366 
367  CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
368 
369  return 0;
370 }
371 
372 static int FUNC(sps_extension)(CodedBitstreamContext *ctx, RWContext *rw,
373  H264RawSPSExtension *current)
374 {
375  int err;
376 
377  HEADER("Sequence Parameter Set Extension");
378 
379  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header,
380  1 << H264_NAL_SPS_EXT));
381 
382  ue(seq_parameter_set_id, 0, 31);
383 
384  ue(aux_format_idc, 0, 3);
385 
386  if (current->aux_format_idc != 0) {
387  int bits;
388 
389  ue(bit_depth_aux_minus8, 0, 4);
390  flag(alpha_incr_flag);
391 
392  bits = current->bit_depth_aux_minus8 + 9;
393  ub(bits, alpha_opaque_value);
394  ub(bits, alpha_transparent_value);
395  }
396 
397  flag(additional_extension_flag);
398 
399  CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
400 
401  return 0;
402 }
403 
404 static int FUNC(pps)(CodedBitstreamContext *ctx, RWContext *rw,
405  H264RawPPS *current)
406 {
407  CodedBitstreamH264Context *h264 = ctx->priv_data;
408  const H264RawSPS *sps;
409  int err, i;
410 
411  HEADER("Picture Parameter Set");
412 
413  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header,
414  1 << H264_NAL_PPS));
415 
416  ue(pic_parameter_set_id, 0, 255);
417  ue(seq_parameter_set_id, 0, 31);
418 
419  sps = h264->sps[current->seq_parameter_set_id];
420  if (!sps) {
421  av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n",
422  current->seq_parameter_set_id);
423  return AVERROR_INVALIDDATA;
424  }
425 
426  flag(entropy_coding_mode_flag);
427  flag(bottom_field_pic_order_in_frame_present_flag);
428 
429  ue(num_slice_groups_minus1, 0, 7);
430  if (current->num_slice_groups_minus1 > 0) {
431  unsigned int pic_size;
432  int iGroup;
433 
434  pic_size = (sps->pic_width_in_mbs_minus1 + 1) *
435  (sps->pic_height_in_map_units_minus1 + 1);
436 
437  ue(slice_group_map_type, 0, 6);
438 
439  if (current->slice_group_map_type == 0) {
440  for (iGroup = 0; iGroup <= current->num_slice_groups_minus1; iGroup++)
441  ues(run_length_minus1[iGroup], 0, pic_size - 1, 1, iGroup);
442 
443  } else if (current->slice_group_map_type == 2) {
444  for (iGroup = 0; iGroup < current->num_slice_groups_minus1; iGroup++) {
445  ues(top_left[iGroup], 0, pic_size - 1, 1, iGroup);
446  ues(bottom_right[iGroup],
447  current->top_left[iGroup], pic_size - 1, 1, iGroup);
448  }
449  } else if (current->slice_group_map_type == 3 ||
450  current->slice_group_map_type == 4 ||
451  current->slice_group_map_type == 5) {
452  flag(slice_group_change_direction_flag);
453  ue(slice_group_change_rate_minus1, 0, pic_size - 1);
454  } else if (current->slice_group_map_type == 6) {
455  ue(pic_size_in_map_units_minus1, pic_size - 1, pic_size - 1);
456 
457  allocate(current->slice_group_id,
458  current->pic_size_in_map_units_minus1 + 1);
459  for (i = 0; i <= current->pic_size_in_map_units_minus1; i++)
460  us(av_log2(2 * current->num_slice_groups_minus1 + 1),
461  slice_group_id[i], 0, current->num_slice_groups_minus1, 1, i);
462  }
463  }
464 
465  ue(num_ref_idx_l0_default_active_minus1, 0, 31);
466  ue(num_ref_idx_l1_default_active_minus1, 0, 31);
467 
468  flag(weighted_pred_flag);
469  u(2, weighted_bipred_idc, 0, 2);
470 
471  se(pic_init_qp_minus26, -26 - 6 * sps->bit_depth_luma_minus8, +25);
472  se(pic_init_qs_minus26, -26, +25);
473  se(chroma_qp_index_offset, -12, +12);
474 
475  flag(deblocking_filter_control_present_flag);
476  flag(constrained_intra_pred_flag);
477  flag(redundant_pic_cnt_present_flag);
478 
479  if (more_rbsp_data(current->more_rbsp_data))
480  {
481  flag(transform_8x8_mode_flag);
482 
483  flag(pic_scaling_matrix_present_flag);
484  if (current->pic_scaling_matrix_present_flag) {
485  for (i = 0; i < 6 + (((sps->chroma_format_idc != 3) ? 2 : 6) *
486  current->transform_8x8_mode_flag); i++) {
487  flags(pic_scaling_list_present_flag[i], 1, i);
488  if (current->pic_scaling_list_present_flag[i]) {
489  if (i < 6)
490  CHECK(FUNC(scaling_list)(ctx, rw,
491  &current->scaling_list_4x4[i],
492  16));
493  else
494  CHECK(FUNC(scaling_list)(ctx, rw,
495  &current->scaling_list_8x8[i - 6],
496  64));
497  }
498  }
499  }
500 
501  se(second_chroma_qp_index_offset, -12, +12);
502  } else {
503  infer(transform_8x8_mode_flag, 0);
504  infer(pic_scaling_matrix_present_flag, 0);
505  infer(second_chroma_qp_index_offset, current->chroma_qp_index_offset);
506  }
507 
508  CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
509 
510  return 0;
511 }
512 
513 static int FUNC(sei_buffering_period)(CodedBitstreamContext *ctx, RWContext *rw,
514  H264RawSEIBufferingPeriod *current,
515  SEIMessageState *sei)
516 {
517  CodedBitstreamH264Context *h264 = ctx->priv_data;
518  const H264RawSPS *sps;
519  int err, i, length;
520 
521  HEADER("Buffering Period");
522 
523  ue(seq_parameter_set_id, 0, 31);
524 
525  sps = h264->sps[current->seq_parameter_set_id];
526  if (!sps) {
527  av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n",
528  current->seq_parameter_set_id);
529  return AVERROR_INVALIDDATA;
530  }
531  h264->active_sps = sps;
532 
533  if (sps->vui.nal_hrd_parameters_present_flag) {
534  for (i = 0; i <= sps->vui.nal_hrd_parameters.cpb_cnt_minus1; i++) {
535  length = sps->vui.nal_hrd_parameters.initial_cpb_removal_delay_length_minus1 + 1;
536  xu(length, initial_cpb_removal_delay[SchedSelIdx],
537  current->nal.initial_cpb_removal_delay[i],
538  1, MAX_UINT_BITS(length), 1, i);
539  xu(length, initial_cpb_removal_delay_offset[SchedSelIdx],
540  current->nal.initial_cpb_removal_delay_offset[i],
541  0, MAX_UINT_BITS(length), 1, i);
542  }
543  }
544 
545  if (sps->vui.vcl_hrd_parameters_present_flag) {
546  for (i = 0; i <= sps->vui.vcl_hrd_parameters.cpb_cnt_minus1; i++) {
547  length = sps->vui.vcl_hrd_parameters.initial_cpb_removal_delay_length_minus1 + 1;
548  xu(length, initial_cpb_removal_delay[SchedSelIdx],
549  current->vcl.initial_cpb_removal_delay[i],
550  1, MAX_UINT_BITS(length), 1, i);
551  xu(length, initial_cpb_removal_delay_offset[SchedSelIdx],
552  current->vcl.initial_cpb_removal_delay_offset[i],
553  0, MAX_UINT_BITS(length), 1, i);
554  }
555  }
556 
557  return 0;
558 }
559 
560 static int FUNC(sei_pic_timestamp)(CodedBitstreamContext *ctx, RWContext *rw,
561  H264RawSEIPicTimestamp *current,
562  const H264RawSPS *sps)
563 {
564  uint8_t time_offset_length;
565  int err;
566 
567  u(2, ct_type, 0, 2);
568  flag(nuit_field_based_flag);
569  u(5, counting_type, 0, 6);
570  flag(full_timestamp_flag);
571  flag(discontinuity_flag);
572  flag(cnt_dropped_flag);
573  ub(8, n_frames);
574  if (current->full_timestamp_flag) {
575  u(6, seconds_value, 0, 59);
576  u(6, minutes_value, 0, 59);
577  u(5, hours_value, 0, 23);
578  } else {
579  flag(seconds_flag);
580  if (current->seconds_flag) {
581  u(6, seconds_value, 0, 59);
582  flag(minutes_flag);
583  if (current->minutes_flag) {
584  u(6, minutes_value, 0, 59);
585  flag(hours_flag);
586  if (current->hours_flag)
587  u(5, hours_value, 0, 23);
588  }
589  }
590  }
591 
592  if (sps->vui.nal_hrd_parameters_present_flag)
593  time_offset_length = sps->vui.nal_hrd_parameters.time_offset_length;
594  else if (sps->vui.vcl_hrd_parameters_present_flag)
595  time_offset_length = sps->vui.vcl_hrd_parameters.time_offset_length;
596  else
597  time_offset_length = 24;
598 
599  if (time_offset_length > 0)
600  ib(time_offset_length, time_offset);
601  else
602  infer(time_offset, 0);
603 
604  return 0;
605 }
606 
607 static int FUNC(sei_pic_timing)(CodedBitstreamContext *ctx, RWContext *rw,
608  H264RawSEIPicTiming *current,
609  SEIMessageState *sei)
610 {
611  CodedBitstreamH264Context *h264 = ctx->priv_data;
612  const H264RawSPS *sps;
613  int err;
614 
615  HEADER("Picture Timing");
616 
617  sps = h264->active_sps;
618  if (!sps) {
619  // If there is exactly one possible SPS but it is not yet active
620  // then just assume that it should be the active one.
621  int i, k = -1;
622  for (i = 0; i < H264_MAX_SPS_COUNT; i++) {
623  if (h264->sps[i]) {
624  if (k >= 0) {
625  k = -1;
626  break;
627  }
628  k = i;
629  }
630  }
631  if (k >= 0)
632  sps = h264->sps[k];
633  }
634  if (!sps) {
635  av_log(ctx->log_ctx, AV_LOG_ERROR,
636  "No active SPS for pic_timing.\n");
637  return AVERROR_INVALIDDATA;
638  }
639 
640  if (sps->vui.nal_hrd_parameters_present_flag ||
641  sps->vui.vcl_hrd_parameters_present_flag) {
642  const H264RawHRD *hrd;
643 
644  if (sps->vui.nal_hrd_parameters_present_flag)
645  hrd = &sps->vui.nal_hrd_parameters;
646  else if (sps->vui.vcl_hrd_parameters_present_flag)
647  hrd = &sps->vui.vcl_hrd_parameters;
648  else {
649  av_log(ctx->log_ctx, AV_LOG_ERROR,
650  "No HRD parameters for pic_timing.\n");
651  return AVERROR_INVALIDDATA;
652  }
653 
654  ub(hrd->cpb_removal_delay_length_minus1 + 1, cpb_removal_delay);
655  ub(hrd->dpb_output_delay_length_minus1 + 1, dpb_output_delay);
656  }
657 
658  if (sps->vui.pic_struct_present_flag) {
659  static const uint8_t num_clock_ts[9] = {
660  1, 1, 1, 2, 2, 3, 3, 2, 3
661  };
662  int i;
663 
664  u(4, pic_struct, 0, 8);
665  if (current->pic_struct > 8)
666  return AVERROR_INVALIDDATA;
667 
668  for (i = 0; i < num_clock_ts[current->pic_struct]; i++) {
669  flags(clock_timestamp_flag[i], 1, i);
670  if (current->clock_timestamp_flag[i])
671  CHECK(FUNC(sei_pic_timestamp)(ctx, rw,
672  &current->timestamp[i], sps));
673  }
674  }
675 
676  return 0;
677 }
678 
679 static int FUNC(sei_pan_scan_rect)(CodedBitstreamContext *ctx, RWContext *rw,
680  H264RawSEIPanScanRect *current,
681  SEIMessageState *sei)
682 {
683  int err, i;
684 
685  HEADER("Pan-Scan Rectangle");
686 
687  ue(pan_scan_rect_id, 0, UINT32_MAX - 1);
688  flag(pan_scan_rect_cancel_flag);
689 
690  if (!current->pan_scan_rect_cancel_flag) {
691  ue(pan_scan_cnt_minus1, 0, 2);
692 
693  for (i = 0; i <= current->pan_scan_cnt_minus1; i++) {
694  ses(pan_scan_rect_left_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
695  ses(pan_scan_rect_right_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
696  ses(pan_scan_rect_top_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
697  ses(pan_scan_rect_bottom_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
698  }
699 
700  ue(pan_scan_rect_repetition_period, 0, 16384);
701  }
702 
703  return 0;
704 }
705 
706 static int FUNC(sei_recovery_point)(CodedBitstreamContext *ctx, RWContext *rw,
707  H264RawSEIRecoveryPoint *current,
708  SEIMessageState *sei)
709 {
710  int err;
711 
712  HEADER("Recovery Point");
713 
714  ue(recovery_frame_cnt, 0, 65535);
715  flag(exact_match_flag);
716  flag(broken_link_flag);
717  u(2, changing_slice_group_idc, 0, 2);
718 
719  return 0;
720 }
721 
722 static int FUNC(sei_display_orientation)(CodedBitstreamContext *ctx, RWContext *rw,
723  H264RawSEIDisplayOrientation *current,
724  SEIMessageState *sei)
725 {
726  int err;
727 
728  HEADER("Display Orientation");
729 
730  flag(display_orientation_cancel_flag);
731  if (!current->display_orientation_cancel_flag) {
732  flag(hor_flip);
733  flag(ver_flip);
734  ub(16, anticlockwise_rotation);
735  ue(display_orientation_repetition_period, 0, 16384);
736  flag(display_orientation_extension_flag);
737  }
738 
739  return 0;
740 }
741 
742 static int FUNC(sei)(CodedBitstreamContext *ctx, RWContext *rw,
743  H264RawSEI *current)
744 {
745  int err;
746 
747  HEADER("Supplemental Enhancement Information");
748 
749  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header,
750  1 << H264_NAL_SEI));
751 
752  CHECK(FUNC_SEI(message_list)(ctx, rw, &current->message_list, 1));
753 
754  CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
755 
756  return 0;
757 }
758 
759 static int FUNC(aud)(CodedBitstreamContext *ctx, RWContext *rw,
760  H264RawAUD *current)
761 {
762  int err;
763 
764  HEADER("Access Unit Delimiter");
765 
766  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header,
767  1 << H264_NAL_AUD));
768 
769  ub(3, primary_pic_type);
770 
771  CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
772 
773  return 0;
774 }
775 
776 static int FUNC(ref_pic_list_modification)(CodedBitstreamContext *ctx, RWContext *rw,
777  H264RawSliceHeader *current)
778 {
779  CodedBitstreamH264Context *h264 = ctx->priv_data;
780  const H264RawSPS *sps = h264->active_sps;
781  int err, i, mopn;
782 
783  if (current->slice_type % 5 != 2 &&
784  current->slice_type % 5 != 4) {
785  flag(ref_pic_list_modification_flag_l0);
786  if (current->ref_pic_list_modification_flag_l0) {
787  for (i = 0; i < H264_MAX_RPLM_COUNT; i++) {
788  xue(modification_of_pic_nums_idc,
789  current->rplm_l0[i].modification_of_pic_nums_idc, 0, 3, 0);
790 
791  mopn = current->rplm_l0[i].modification_of_pic_nums_idc;
792  if (mopn == 3)
793  break;
794 
795  if (mopn == 0 || mopn == 1)
796  xue(abs_diff_pic_num_minus1,
797  current->rplm_l0[i].abs_diff_pic_num_minus1,
798  0, (1 + current->field_pic_flag) *
799  (1 << (sps->log2_max_frame_num_minus4 + 4)), 0);
800  else if (mopn == 2)
801  xue(long_term_pic_num,
802  current->rplm_l0[i].long_term_pic_num,
803  0, sps->max_num_ref_frames - 1, 0);
804  }
805  }
806  }
807 
808  if (current->slice_type % 5 == 1) {
809  flag(ref_pic_list_modification_flag_l1);
810  if (current->ref_pic_list_modification_flag_l1) {
811  for (i = 0; i < H264_MAX_RPLM_COUNT; i++) {
812  xue(modification_of_pic_nums_idc,
813  current->rplm_l1[i].modification_of_pic_nums_idc, 0, 3, 0);
814 
815  mopn = current->rplm_l1[i].modification_of_pic_nums_idc;
816  if (mopn == 3)
817  break;
818 
819  if (mopn == 0 || mopn == 1)
820  xue(abs_diff_pic_num_minus1,
821  current->rplm_l1[i].abs_diff_pic_num_minus1,
822  0, (1 + current->field_pic_flag) *
823  (1 << (sps->log2_max_frame_num_minus4 + 4)), 0);
824  else if (mopn == 2)
825  xue(long_term_pic_num,
826  current->rplm_l1[i].long_term_pic_num,
827  0, sps->max_num_ref_frames - 1, 0);
828  }
829  }
830  }
831 
832  return 0;
833 }
834 
835 static int FUNC(pred_weight_table)(CodedBitstreamContext *ctx, RWContext *rw,
836  H264RawSliceHeader *current)
837 {
838  CodedBitstreamH264Context *h264 = ctx->priv_data;
839  const H264RawSPS *sps = h264->active_sps;
840  int chroma;
841  int err, i, j;
842 
843  ue(luma_log2_weight_denom, 0, 7);
844 
845  chroma = !sps->separate_colour_plane_flag && sps->chroma_format_idc != 0;
846  if (chroma)
847  ue(chroma_log2_weight_denom, 0, 7);
848 
849  for (i = 0; i <= current->num_ref_idx_l0_active_minus1; i++) {
850  flags(luma_weight_l0_flag[i], 1, i);
851  if (current->luma_weight_l0_flag[i]) {
852  ses(luma_weight_l0[i], -128, +127, 1, i);
853  ses(luma_offset_l0[i], -128, +127, 1, i);
854  }
855  if (chroma) {
856  flags(chroma_weight_l0_flag[i], 1, i);
857  if (current->chroma_weight_l0_flag[i]) {
858  for (j = 0; j < 2; j++) {
859  ses(chroma_weight_l0[i][j], -128, +127, 2, i, j);
860  ses(chroma_offset_l0[i][j], -128, +127, 2, i, j);
861  }
862  }
863  }
864  }
865 
866  if (current->slice_type % 5 == 1) {
867  for (i = 0; i <= current->num_ref_idx_l1_active_minus1; i++) {
868  flags(luma_weight_l1_flag[i], 1, i);
869  if (current->luma_weight_l1_flag[i]) {
870  ses(luma_weight_l1[i], -128, +127, 1, i);
871  ses(luma_offset_l1[i], -128, +127, 1, i);
872  }
873  if (chroma) {
874  flags(chroma_weight_l1_flag[i], 1, i);
875  if (current->chroma_weight_l1_flag[i]) {
876  for (j = 0; j < 2; j++) {
877  ses(chroma_weight_l1[i][j], -128, +127, 2, i, j);
878  ses(chroma_offset_l1[i][j], -128, +127, 2, i, j);
879  }
880  }
881  }
882  }
883  }
884 
885  return 0;
886 }
887 
888 static int FUNC(dec_ref_pic_marking)(CodedBitstreamContext *ctx, RWContext *rw,
889  H264RawSliceHeader *current, int idr_pic_flag)
890 {
891  CodedBitstreamH264Context *h264 = ctx->priv_data;
892  const H264RawSPS *sps = h264->active_sps;
893  int err, i;
894  uint32_t mmco;
895 
896  if (idr_pic_flag) {
897  flag(no_output_of_prior_pics_flag);
898  flag(long_term_reference_flag);
899  } else {
900  flag(adaptive_ref_pic_marking_mode_flag);
901  if (current->adaptive_ref_pic_marking_mode_flag) {
902  for (i = 0; i < H264_MAX_MMCO_COUNT; i++) {
903  xue(memory_management_control_operation,
904  current->mmco[i].memory_management_control_operation,
905  0, 6, 0);
906 
907  mmco = current->mmco[i].memory_management_control_operation;
908  if (mmco == 0)
909  break;
910 
911  if (mmco == 1 || mmco == 3)
912  xue(difference_of_pic_nums_minus1,
913  current->mmco[i].difference_of_pic_nums_minus1,
914  0, INT32_MAX, 0);
915  if (mmco == 2)
916  xue(long_term_pic_num,
917  current->mmco[i].long_term_pic_num,
918  0, sps->max_num_ref_frames - 1, 0);
919  if (mmco == 3 || mmco == 6)
920  xue(long_term_frame_idx,
921  current->mmco[i].long_term_frame_idx,
922  0, sps->max_num_ref_frames - 1, 0);
923  if (mmco == 4)
924  xue(max_long_term_frame_idx_plus1,
925  current->mmco[i].max_long_term_frame_idx_plus1,
926  0, sps->max_num_ref_frames, 0);
927  }
928  if (i == H264_MAX_MMCO_COUNT) {
929  av_log(ctx->log_ctx, AV_LOG_ERROR, "Too many "
930  "memory management control operations.\n");
931  return AVERROR_INVALIDDATA;
932  }
933  }
934  }
935 
936  return 0;
937 }
938 
939 static int FUNC(slice_header)(CodedBitstreamContext *ctx, RWContext *rw,
940  H264RawSliceHeader *current)
941 {
942  CodedBitstreamH264Context *h264 = ctx->priv_data;
943  const H264RawSPS *sps;
944  const H264RawPPS *pps;
945  int err;
946  int idr_pic_flag;
947  int slice_type_i, slice_type_p, slice_type_b;
948  int slice_type_si, slice_type_sp;
949 
950  HEADER("Slice Header");
951 
952  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header,
953  1 << H264_NAL_SLICE |
954  1 << H264_NAL_IDR_SLICE |
955  1 << H264_NAL_AUXILIARY_SLICE));
956 
957  if (current->nal_unit_header.nal_unit_type == H264_NAL_AUXILIARY_SLICE) {
958  if (!h264->last_slice_nal_unit_type) {
959  av_log(ctx->log_ctx, AV_LOG_ERROR, "Auxiliary slice "
960  "is not decodable without the main picture "
961  "in the same access unit.\n");
962  return AVERROR_INVALIDDATA;
963  }
964  idr_pic_flag = h264->last_slice_nal_unit_type == H264_NAL_IDR_SLICE;
965  } else {
966  idr_pic_flag = current->nal_unit_header.nal_unit_type == H264_NAL_IDR_SLICE;
967  }
968 
969  ue(first_mb_in_slice, 0, H264_MAX_MB_PIC_SIZE - 1);
970  ue(slice_type, 0, 9);
971 
972  slice_type_i = current->slice_type % 5 == 2;
973  slice_type_p = current->slice_type % 5 == 0;
974  slice_type_b = current->slice_type % 5 == 1;
975  slice_type_si = current->slice_type % 5 == 4;
976  slice_type_sp = current->slice_type % 5 == 3;
977 
978  if (idr_pic_flag && !(slice_type_i || slice_type_si)) {
979  av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid slice type %d "
980  "for IDR picture.\n", current->slice_type);
981  return AVERROR_INVALIDDATA;
982  }
983 
984  ue(pic_parameter_set_id, 0, 255);
985 
986  pps = h264->pps[current->pic_parameter_set_id];
987  if (!pps) {
988  av_log(ctx->log_ctx, AV_LOG_ERROR, "PPS id %d not available.\n",
989  current->pic_parameter_set_id);
990  return AVERROR_INVALIDDATA;
991  }
992  h264->active_pps = pps;
993 
994  sps = h264->sps[pps->seq_parameter_set_id];
995  if (!sps) {
996  av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n",
997  pps->seq_parameter_set_id);
998  return AVERROR_INVALIDDATA;
999  }
1000  h264->active_sps = sps;
1001 
1002  if (sps->separate_colour_plane_flag)
1003  u(2, colour_plane_id, 0, 2);
1004 
1005  ub(sps->log2_max_frame_num_minus4 + 4, frame_num);
1006 
1007  if (!sps->frame_mbs_only_flag) {
1008  flag(field_pic_flag);
1009  if (current->field_pic_flag)
1010  flag(bottom_field_flag);
1011  else
1012  infer(bottom_field_flag, 0);
1013  } else {
1014  infer(field_pic_flag, 0);
1015  infer(bottom_field_flag, 0);
1016  }
1017 
1018  if (idr_pic_flag)
1019  ue(idr_pic_id, 0, 65535);
1020 
1021  if (sps->pic_order_cnt_type == 0) {
1022  ub(sps->log2_max_pic_order_cnt_lsb_minus4 + 4, pic_order_cnt_lsb);
1023  if (pps->bottom_field_pic_order_in_frame_present_flag &&
1024  !current->field_pic_flag)
1025  se(delta_pic_order_cnt_bottom, INT32_MIN + 1, INT32_MAX);
1026 
1027  } else if (sps->pic_order_cnt_type == 1) {
1028  if (!sps->delta_pic_order_always_zero_flag) {
1029  se(delta_pic_order_cnt[0], INT32_MIN + 1, INT32_MAX);
1030  if (pps->bottom_field_pic_order_in_frame_present_flag &&
1031  !current->field_pic_flag)
1032  se(delta_pic_order_cnt[1], INT32_MIN + 1, INT32_MAX);
1033  else
1034  infer(delta_pic_order_cnt[1], 0);
1035  } else {
1036  infer(delta_pic_order_cnt[0], 0);
1037  infer(delta_pic_order_cnt[1], 0);
1038  }
1039  }
1040 
1041  if (pps->redundant_pic_cnt_present_flag)
1042  ue(redundant_pic_cnt, 0, 127);
1043  else
1044  infer(redundant_pic_cnt, 0);
1045 
1046  if (current->nal_unit_header.nal_unit_type != H264_NAL_AUXILIARY_SLICE
1047  && !current->redundant_pic_cnt)
1048  h264->last_slice_nal_unit_type =
1049  current->nal_unit_header.nal_unit_type;
1050 
1051  if (slice_type_b)
1052  flag(direct_spatial_mv_pred_flag);
1053 
1054  if (slice_type_p || slice_type_sp || slice_type_b) {
1055  flag(num_ref_idx_active_override_flag);
1056  if (current->num_ref_idx_active_override_flag) {
1057  ue(num_ref_idx_l0_active_minus1, 0, 31);
1058  if (slice_type_b)
1059  ue(num_ref_idx_l1_active_minus1, 0, 31);
1060  } else {
1061  infer(num_ref_idx_l0_active_minus1,
1062  pps->num_ref_idx_l0_default_active_minus1);
1063  infer(num_ref_idx_l1_active_minus1,
1064  pps->num_ref_idx_l1_default_active_minus1);
1065  }
1066  }
1067 
1068  if (current->nal_unit_header.nal_unit_type == 20 ||
1069  current->nal_unit_header.nal_unit_type == 21) {
1070  av_log(ctx->log_ctx, AV_LOG_ERROR, "MVC / 3DAVC not supported.\n");
1071  return AVERROR_PATCHWELCOME;
1072  } else {
1073  CHECK(FUNC(ref_pic_list_modification)(ctx, rw, current));
1074  }
1075 
1076  if ((pps->weighted_pred_flag && (slice_type_p || slice_type_sp)) ||
1077  (pps->weighted_bipred_idc == 1 && slice_type_b)) {
1078  CHECK(FUNC(pred_weight_table)(ctx, rw, current));
1079  }
1080 
1081  if (current->nal_unit_header.nal_ref_idc != 0) {
1082  CHECK(FUNC(dec_ref_pic_marking)(ctx, rw, current, idr_pic_flag));
1083  }
1084 
1085  if (pps->entropy_coding_mode_flag &&
1086  !slice_type_i && !slice_type_si) {
1087  ue(cabac_init_idc, 0, 2);
1088  }
1089 
1090  se(slice_qp_delta, - 51 - 6 * sps->bit_depth_luma_minus8,
1091  + 51 + 6 * sps->bit_depth_luma_minus8);
1092  if (slice_type_sp || slice_type_si) {
1093  if (slice_type_sp)
1094  flag(sp_for_switch_flag);
1095  se(slice_qs_delta, -51, +51);
1096  }
1097 
1098  if (pps->deblocking_filter_control_present_flag) {
1099  ue(disable_deblocking_filter_idc, 0, 2);
1100  if (current->disable_deblocking_filter_idc != 1) {
1101  se(slice_alpha_c0_offset_div2, -6, +6);
1102  se(slice_beta_offset_div2, -6, +6);
1103  } else {
1104  infer(slice_alpha_c0_offset_div2, 0);
1105  infer(slice_beta_offset_div2, 0);
1106  }
1107  } else {
1108  infer(disable_deblocking_filter_idc, 0);
1109  infer(slice_alpha_c0_offset_div2, 0);
1110  infer(slice_beta_offset_div2, 0);
1111  }
1112 
1113  if (pps->num_slice_groups_minus1 > 0 &&
1114  pps->slice_group_map_type >= 3 &&
1115  pps->slice_group_map_type <= 5) {
1116  unsigned int pic_size, max, bits;
1117 
1118  pic_size = (sps->pic_width_in_mbs_minus1 + 1) *
1119  (sps->pic_height_in_map_units_minus1 + 1);
1120  max = (pic_size + pps->slice_group_change_rate_minus1) /
1121  (pps->slice_group_change_rate_minus1 + 1);
1122  bits = av_ceil_log2(max + 1);
1123 
1124  u(bits, slice_group_change_cycle, 0, max);
1125  }
1126 
1127  if (pps->entropy_coding_mode_flag) {
1128  while (byte_alignment(rw))
1129  fixed(1, cabac_alignment_one_bit, 1);
1130  }
1131 
1132  return 0;
1133 }
1134 
1135 static int FUNC(filler)(CodedBitstreamContext *ctx, RWContext *rw,
1136  H264RawFiller *current)
1137 {
1138  int err;
1139 
1140  HEADER("Filler Data");
1141 
1142  CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header,
1143  1 << H264_NAL_FILLER_DATA));
1144 
1145 #ifdef READ
1146  while (show_bits(rw, 8) == 0xff) {
1147  fixed(8, ff_byte, 0xff);
1148  ++current->filler_size;
1149  }
1150 #else
1151  {
1152  uint32_t i;
1153  for (i = 0; i < current->filler_size; i++)
1154  fixed(8, ff_byte, 0xff);
1155  }
1156 #endif
1157 
1158  CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
1159 
1160  return 0;
1161 }
1162 
1163 static int FUNC(end_of_sequence)(CodedBitstreamContext *ctx, RWContext *rw,
1164  H264RawNALUnitHeader *current)
1165 {
1166  HEADER("End of Sequence");
1167 
1168  return FUNC(nal_unit_header)(ctx, rw, current,
1169  1 << H264_NAL_END_SEQUENCE);
1170 }
1171 
1172 static int FUNC(end_of_stream)(CodedBitstreamContext *ctx, RWContext *rw,
1173  H264RawNALUnitHeader *current)
1174 {
1175  HEADER("End of Stream");
1176 
1177  return FUNC(nal_unit_header)(ctx, rw, current,
1178  1 << H264_NAL_END_STREAM);
1179 }
xue
#define xue(name, var, range_min, range_max, subs,...)
Definition: cbs_h2645.c:398
H264_NAL_IDR_SLICE
@ H264_NAL_IDR_SLICE
Definition: h264.h:39
byte_alignment
#define byte_alignment(rw)
Definition: cbs_av1.c:719
u
#define u(width, name, range_min, range_max)
Definition: cbs_h2645.c:264
rbsp_trailing_bits
static int FUNC() rbsp_trailing_bits(CodedBitstreamContext *ctx, RWContext *rw)
Definition: cbs_h264_syntax_template.c:19
se
#define se(name, range_min, range_max)
Definition: cbs_h2645.c:275
HEADER
#define HEADER(name)
Definition: cbs_av1.c:533
CodedBitstreamH264Context::pps
H264RawPPS * pps[H264_MAX_PPS_COUNT]
Definition: cbs_h264.h:392
infer
#define infer(name, value)
Definition: cbs_av1.c:709
H264_NAL_END_SEQUENCE
@ H264_NAL_END_SEQUENCE
Definition: h264.h:44
CodedBitstreamContext
Context structure for coded bitstream operations.
Definition: cbs.h:170
level_idc
int level_idc
Definition: h264_levels.c:25
H264RawHRD::dpb_output_delay_length_minus1
uint8_t dpb_output_delay_length_minus1
Definition: cbs_h264.h:54
chroma
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, int jobnr, int nb_jobs)
Definition: vf_waveform.c:1624
H264RawHRD
Definition: cbs_h264.h:43
allocate
#define allocate(name, size)
Definition: cbs_h2645.c:432
max
#define max(a, b)
Definition: cuda_runtime.h:33
H264_NAL_AUD
@ H264_NAL_AUD
Definition: h264.h:43
ses
#define ses(name, range_min, range_max, subs,...)
Definition: cbs_h2645.c:290
H264RawSEIPicTiming
Definition: cbs_h264.h:249
CHECK
CHECK(-1) CHECK(-2) }} }} CHECK(1) CHECK(2) }} }} } if(diff0+diff1 > 0) temp -
av_ceil_log2
#define av_ceil_log2
Definition: common.h:119
CodedBitstreamH264Context::active_sps
const H264RawSPS * active_sps
Definition: cbs_h264.h:397
filler
static int FUNC() filler(CodedBitstreamContext *ctx, RWContext *rw, H264RawFiller *current)
Definition: cbs_h264_syntax_template.c:1135
ub
#define ub(width, name)
Definition: cbs_h2645.c:266
ue
#define ue(name, range_min, range_max)
Definition: cbs_h2645.c:269
us
#define us(width, name, range_min, range_max, subs,...)
Definition: cbs_h2645.c:278
H264RawSEIPicTimestamp
Definition: cbs_h264.h:232
message_list
static int FUNC() message_list(CodedBitstreamContext *ctx, RWContext *rw, SEIRawMessageList *current, int prefix)
Definition: cbs_sei_syntax_template.c:230
H264_MAX_SPS_COUNT
@ H264_MAX_SPS_COUNT
Definition: h264.h:71
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:181
H264_MAX_MMCO_COUNT
@ H264_MAX_MMCO_COUNT
Definition: h264.h:92
H264_MAX_MB_HEIGHT
@ H264_MAX_MB_HEIGHT
Definition: h264.h:107
sps_extension
static int FUNC() sps_extension(CodedBitstreamContext *ctx, RWContext *rw, H264RawSPSExtension *current)
Definition: cbs_h264_syntax_template.c:372
bits
uint8_t bits
Definition: vp3data.h:141
ctx
AVFormatContext * ctx
Definition: movenc.c:48
FUNC_SEI
#define FUNC_SEI(name)
Definition: cbs_h2645.c:260
H264_NAL_SPS_EXT
@ H264_NAL_SPS_EXT
Definition: h264.h:47
MAX_UINT_BITS
#define MAX_UINT_BITS(length)
Definition: cbs_internal.h:169
sei_display_orientation
static int FUNC() sei_display_orientation(CodedBitstreamContext *ctx, RWContext *rw, H264RawSEIDisplayOrientation *current, SEIMessageState *sei)
Definition: cbs_h264_syntax_template.c:722
pred_weight_table
static int FUNC() pred_weight_table(CodedBitstreamContext *ctx, RWContext *rw, H264RawSliceHeader *current)
Definition: cbs_h264_syntax_template.c:835
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
slice_header
static int FUNC() slice_header(CodedBitstreamContext *ctx, RWContext *rw, H264RawSliceHeader *current)
Definition: cbs_h264_syntax_template.c:939
profile_idc
int profile_idc
Definition: h264_levels.c:52
end_of_stream
static int FUNC() end_of_stream(CodedBitstreamContext *ctx, RWContext *rw, H264RawNALUnitHeader *current)
Definition: cbs_h264_syntax_template.c:1172
H264RawNALUnitHeader
Definition: cbs_h264.h:31
H264RawSEIPanScanRect
Definition: cbs_h264.h:257
sei
static int FUNC() sei(CodedBitstreamContext *ctx, RWContext *rw, H264RawSEI *current)
Definition: cbs_h264_syntax_template.c:742
H264_NAL_SPS
@ H264_NAL_SPS
Definition: h264.h:41
CodedBitstreamH264Context
Definition: cbs_h264.h:383
hrd_parameters
static int FUNC() hrd_parameters(CodedBitstreamContext *ctx, RWContext *rw, H264RawHRD *current)
Definition: cbs_h264_syntax_template.c:88
aud
static int FUNC() aud(CodedBitstreamContext *ctx, RWContext *rw, H264RawAUD *current)
Definition: cbs_h264_syntax_template.c:759
H264_NAL_END_STREAM
@ H264_NAL_END_STREAM
Definition: h264.h:45
pps
static int FUNC() pps(CodedBitstreamContext *ctx, RWContext *rw, H264RawPPS *current)
Definition: cbs_h264_syntax_template.c:404
H264_NAL_SLICE
@ H264_NAL_SLICE
Definition: h264.h:35
H264_MAX_WIDTH
@ H264_MAX_WIDTH
Definition: h264.h:108
transfer_characteristics
static const struct TransferCharacteristics transfer_characteristics[AVCOL_TRC_NB]
Definition: vf_colorspace.c:177
H264RawSEIDisplayOrientation
Definition: cbs_h264.h:275
CodedBitstreamH264Context::active_pps
const H264RawPPS * active_pps
Definition: cbs_h264.h:398
H264RawSliceHeader
Definition: cbs_h264.h:289
ref_pic_list_modification
static int FUNC() ref_pic_list_modification(CodedBitstreamContext *ctx, RWContext *rw, H264RawSliceHeader *current)
Definition: cbs_h264_syntax_template.c:776
flag
#define flag(name)
Definition: cbs_av1.c:553
vui_parameters
static int FUNC() vui_parameters(CodedBitstreamContext *ctx, RWContext *rw, H264RawVUI *current, H264RawSPS *sps)
Definition: cbs_h264_syntax_template.c:111
i
int i
Definition: input.c:407
H264_MAX_MB_PIC_SIZE
@ H264_MAX_MB_PIC_SIZE
Definition: h264.h:102
CodedBitstreamH264Context::last_slice_nal_unit_type
uint8_t last_slice_nal_unit_type
Definition: cbs_h264.h:403
show_bits
static unsigned int show_bits(GetBitContext *s, int n)
Show 1-25 bits.
Definition: get_bits.h:446
H264RawScalingList
Definition: cbs_h264.h:39
H264RawVUI
Definition: cbs_h264.h:58
H264RawSEI
Definition: cbs_h264.h:284
nal_unit_header
static int FUNC() nal_unit_header(CodedBitstreamContext *ctx, RWContext *rw, H264RawNALUnitHeader *current, uint32_t valid_type_mask)
Definition: cbs_h264_syntax_template.c:30
sps
static int FUNC() sps(CodedBitstreamContext *ctx, RWContext *rw, H264RawSPS *current)
Definition: cbs_h264_syntax_template.c:260
H264RawHRD::cpb_removal_delay_length_minus1
uint8_t cpb_removal_delay_length_minus1
Definition: cbs_h264.h:53
dec_ref_pic_marking
static int FUNC() dec_ref_pic_marking(CodedBitstreamContext *ctx, RWContext *rw, H264RawSliceHeader *current, int idr_pic_flag)
Definition: cbs_h264_syntax_template.c:888
SEIMessageState
Definition: cbs_sei.h:85
H264RawAUD
Definition: cbs_h264.h:218
FUNC
#define FUNC(a)
Definition: bit_depth_template.c:104
sei_pan_scan_rect
static int FUNC() sei_pan_scan_rect(CodedBitstreamContext *ctx, RWContext *rw, H264RawSEIPanScanRect *current, SEIMessageState *sei)
Definition: cbs_h264_syntax_template.c:679
end_of_sequence
static int FUNC() end_of_sequence(CodedBitstreamContext *ctx, RWContext *rw, H264RawNALUnitHeader *current)
Definition: cbs_h264_syntax_template.c:1163
scaling_list
static int FUNC() scaling_list(CodedBitstreamContext *ctx, RWContext *rw, H264RawScalingList *current, int size_of_scaling_list)
Definition: cbs_h264_syntax_template.c:71
sei_buffering_period
static int FUNC() sei_buffering_period(CodedBitstreamContext *ctx, RWContext *rw, H264RawSEIBufferingPeriod *current, SEIMessageState *sei)
Definition: cbs_h264_syntax_template.c:513
more_rbsp_data
#define more_rbsp_data(var)
Definition: cbs_h2645.c:427
H264RawSEIRecoveryPoint
Definition: cbs_h264.h:268
H264_NAL_SEI
@ H264_NAL_SEI
Definition: h264.h:40
ib
#define ib(width, name)
Definition: cbs_h2645.c:273
H264_NAL_PPS
@ H264_NAL_PPS
Definition: h264.h:42
H264_NAL_AUXILIARY_SLICE
@ H264_NAL_AUXILIARY_SLICE
Definition: h264.h:53
fixed
#define fixed(width, name, value)
Definition: cbs_av1.c:566
H264_NAL_FILLER_DATA
@ H264_NAL_FILLER_DATA
Definition: h264.h:46
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
H264RawFiller
Definition: cbs_h264.h:376
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
sei_recovery_point
static int FUNC() sei_recovery_point(CodedBitstreamContext *ctx, RWContext *rw, H264RawSEIRecoveryPoint *current, SEIMessageState *sei)
Definition: cbs_h264_syntax_template.c:706
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
ues
#define ues(name, range_min, range_max, subs,...)
Definition: cbs_h2645.c:284
H264RawSPSExtension
Definition: cbs_h264.h:157
vui_parameters_default
static int FUNC() vui_parameters_default(CodedBitstreamContext *ctx, RWContext *rw, H264RawVUI *current, H264RawSPS *sps)
Definition: cbs_h264_syntax_template.c:220
H264RawSEIBufferingPeriod
Definition: cbs_h264.h:224
xu
#define xu(width, name, var, range_min, range_max, subs,...)
Definition: cbs_h2645.c:392
RWContext
#define RWContext
Definition: cbs_av1.c:662
sei_pic_timing
static int FUNC() sei_pic_timing(CodedBitstreamContext *ctx, RWContext *rw, H264RawSEIPicTiming *current, SEIMessageState *sei)
Definition: cbs_h264_syntax_template.c:607
H264_MAX_MB_WIDTH
@ H264_MAX_MB_WIDTH
Definition: h264.h:106
H264_MAX_RPLM_COUNT
@ H264_MAX_RPLM_COUNT
Definition: h264.h:84
CodedBitstreamH264Context::sps
H264RawSPS * sps[H264_MAX_SPS_COUNT]
Definition: cbs_h264.h:391
AVFormatContext::priv_data
void * priv_data
Format private data.
Definition: avformat.h:1134
av_log2
int av_log2(unsigned v)
Definition: intmath.c:26
H264_MAX_DPB_FRAMES
@ H264_MAX_DPB_FRAMES
Definition: h264.h:76
H264_MAX_HEIGHT
@ H264_MAX_HEIGHT
Definition: h264.h:109
H264RawSPS
Definition: cbs_h264.h:102
sei_pic_timestamp
static int FUNC() sei_pic_timestamp(CodedBitstreamContext *ctx, RWContext *rw, H264RawSEIPicTimestamp *current, const H264RawSPS *sps)
Definition: cbs_h264_syntax_template.c:560
H264RawPPS
Definition: cbs_h264.h:171
Generated on Fri May 7 2021 19:21:15 for FFmpeg by   doxygen 1.8.17