FFmpeg
h264_metadata_bsf.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 #include "libavutil/avstring.h"
20 #include "libavutil/display.h"
21 #include "libavutil/common.h"
22 #include "libavutil/opt.h"
23 
24 #include "bsf.h"
25 #include "cbs.h"
26 #include "cbs_bsf.h"
27 #include "cbs_h264.h"
28 #include "h264.h"
29 #include "h264_levels.h"
30 #include "h264_sei.h"
31 
32 enum {
35 };
36 
37 enum {
39  LEVEL_AUTO = -1,
40 };
41 
42 typedef struct H264MetadataContext {
44 
46 
47  int aud;
49 
51 
53 
59 
61 
64 
65  int crop_left;
67  int crop_top;
69 
70  const char *sei_user_data;
72 
74 
76  double rotate;
77  int flip;
79 
80  int level;
82 
83 
86 {
88  int primary_pic_type_mask = 0xff;
89  int err, i, j;
90 
91  static const int primary_pic_type_table[] = {
92  0x084, // 2, 7
93  0x0a5, // 0, 2, 5, 7
94  0x0e7, // 0, 1, 2, 5, 6, 7
95  0x210, // 4, 9
96  0x318, // 3, 4, 8, 9
97  0x294, // 2, 4, 7, 9
98  0x3bd, // 0, 2, 3, 4, 5, 7, 8, 9
99  0x3ff, // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
100  };
101 
102  for (i = 0; i < au->nb_units; i++) {
103  if (au->units[i].type == H264_NAL_SLICE ||
104  au->units[i].type == H264_NAL_IDR_SLICE) {
105  H264RawSlice *slice = au->units[i].content;
106  for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++) {
107  if (!(primary_pic_type_table[j] &
108  (1 << slice->header.slice_type)))
109  primary_pic_type_mask &= ~(1 << j);
110  }
111  }
112  }
113  for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++)
114  if (primary_pic_type_mask & (1 << j))
115  break;
116  if (j >= FF_ARRAY_ELEMS(primary_pic_type_table)) {
117  av_log(bsf, AV_LOG_ERROR, "No usable primary_pic_type: "
118  "invalid slice types?\n");
119  return AVERROR_INVALIDDATA;
120  }
121 
122  ctx->aud_nal = (H264RawAUD) {
123  .nal_unit_header.nal_unit_type = H264_NAL_AUD,
124  .primary_pic_type = j,
125  };
126 
128  &ctx->aud_nal, NULL);
129  if (err < 0) {
130  av_log(bsf, AV_LOG_ERROR, "Failed to insert AUD.\n");
131  return err;
132  }
133 
134  return 0;
135 }
136 
138  H264RawSPS *sps)
139 {
141  int need_vui = 0;
142  int crop_unit_x, crop_unit_y;
143 
144  if (ctx->sample_aspect_ratio.num && ctx->sample_aspect_ratio.den) {
145  // Table E-1.
146  static const AVRational sar_idc[] = {
147  { 0, 0 }, // Unspecified (never written here).
148  { 1, 1 }, { 12, 11 }, { 10, 11 }, { 16, 11 },
149  { 40, 33 }, { 24, 11 }, { 20, 11 }, { 32, 11 },
150  { 80, 33 }, { 18, 11 }, { 15, 11 }, { 64, 33 },
151  { 160, 99 }, { 4, 3 }, { 3, 2 }, { 2, 1 },
152  };
153  int num, den, i;
154 
155  av_reduce(&num, &den, ctx->sample_aspect_ratio.num,
156  ctx->sample_aspect_ratio.den, 65535);
157 
158  for (i = 1; i < FF_ARRAY_ELEMS(sar_idc); i++) {
159  if (num == sar_idc[i].num &&
160  den == sar_idc[i].den)
161  break;
162  }
163  if (i == FF_ARRAY_ELEMS(sar_idc)) {
164  sps->vui.aspect_ratio_idc = 255;
165  sps->vui.sar_width = num;
166  sps->vui.sar_height = den;
167  } else {
168  sps->vui.aspect_ratio_idc = i;
169  }
170  sps->vui.aspect_ratio_info_present_flag = 1;
171  need_vui = 1;
172  }
173 
174 #define SET_VUI_FIELD(field) do { \
175  if (ctx->field >= 0) { \
176  sps->vui.field = ctx->field; \
177  need_vui = 1; \
178  } \
179  } while (0)
180 
181  if (ctx->overscan_appropriate_flag >= 0) {
182  SET_VUI_FIELD(overscan_appropriate_flag);
183  sps->vui.overscan_info_present_flag = 1;
184  }
185 
186  if (ctx->video_format >= 0 ||
187  ctx->video_full_range_flag >= 0 ||
188  ctx->colour_primaries >= 0 ||
189  ctx->transfer_characteristics >= 0 ||
190  ctx->matrix_coefficients >= 0) {
191 
192  SET_VUI_FIELD(video_format);
193 
194  SET_VUI_FIELD(video_full_range_flag);
195 
196  if (ctx->colour_primaries >= 0 ||
197  ctx->transfer_characteristics >= 0 ||
198  ctx->matrix_coefficients >= 0) {
199 
200  SET_VUI_FIELD(colour_primaries);
202  SET_VUI_FIELD(matrix_coefficients);
203 
204  sps->vui.colour_description_present_flag = 1;
205  }
206  sps->vui.video_signal_type_present_flag = 1;
207  }
208 
209  if (ctx->chroma_sample_loc_type >= 0) {
210  sps->vui.chroma_sample_loc_type_top_field =
211  ctx->chroma_sample_loc_type;
212  sps->vui.chroma_sample_loc_type_bottom_field =
213  ctx->chroma_sample_loc_type;
214  sps->vui.chroma_loc_info_present_flag = 1;
215  need_vui = 1;
216  }
217 
218  if (ctx->tick_rate.num && ctx->tick_rate.den) {
219  int num, den;
220 
221  av_reduce(&num, &den, ctx->tick_rate.num, ctx->tick_rate.den,
222  UINT32_MAX > INT_MAX ? UINT32_MAX : INT_MAX);
223 
224  sps->vui.time_scale = num;
225  sps->vui.num_units_in_tick = den;
226 
227  sps->vui.timing_info_present_flag = 1;
228  need_vui = 1;
229  }
230  SET_VUI_FIELD(fixed_frame_rate_flag);
231 
232  if (sps->separate_colour_plane_flag || sps->chroma_format_idc == 0) {
233  crop_unit_x = 1;
234  crop_unit_y = 2 - sps->frame_mbs_only_flag;
235  } else {
236  crop_unit_x = 1 + (sps->chroma_format_idc < 3);
237  crop_unit_y = (1 + (sps->chroma_format_idc < 2)) *
238  (2 - sps->frame_mbs_only_flag);
239  }
240 #define CROP(border, unit) do { \
241  if (ctx->crop_ ## border >= 0) { \
242  if (ctx->crop_ ## border % unit != 0) { \
243  av_log(bsf, AV_LOG_ERROR, "Invalid value for crop_%s: " \
244  "must be a multiple of %d.\n", #border, unit); \
245  return AVERROR(EINVAL); \
246  } \
247  sps->frame_crop_ ## border ## _offset = \
248  ctx->crop_ ## border / unit; \
249  sps->frame_cropping_flag = 1; \
250  } \
251  } while (0)
252  CROP(left, crop_unit_x);
253  CROP(right, crop_unit_x);
254  CROP(top, crop_unit_y);
255  CROP(bottom, crop_unit_y);
256 #undef CROP
257 
258  if (ctx->level != LEVEL_UNSET) {
259  int level_idc;
260 
261  if (ctx->level == LEVEL_AUTO) {
262  const H264LevelDescriptor *desc;
263  int64_t bit_rate;
264  int width, height, dpb_frames;
265  int framerate;
266 
267  if (sps->vui.nal_hrd_parameters_present_flag) {
268  bit_rate = (sps->vui.nal_hrd_parameters.bit_rate_value_minus1[0] + 1) *
269  (INT64_C(1) << (sps->vui.nal_hrd_parameters.bit_rate_scale + 6));
270  } else if (sps->vui.vcl_hrd_parameters_present_flag) {
271  bit_rate = (sps->vui.vcl_hrd_parameters.bit_rate_value_minus1[0] + 1) *
272  (INT64_C(1) << (sps->vui.vcl_hrd_parameters.bit_rate_scale + 6));
273  // Adjust for VCL vs. NAL limits.
274  bit_rate = bit_rate * 6 / 5;
275  } else {
276  bit_rate = 0;
277  }
278 
279  // Don't use max_dec_frame_buffering if it is only inferred.
280  dpb_frames = sps->vui.bitstream_restriction_flag ?
281  sps->vui.max_dec_frame_buffering : H264_MAX_DPB_FRAMES;
282 
283  width = 16 * (sps->pic_width_in_mbs_minus1 + 1);
284  height = 16 * (sps->pic_height_in_map_units_minus1 + 1) *
285  (2 - sps->frame_mbs_only_flag);
286 
287  if (sps->vui.timing_info_present_flag)
288  framerate = sps->vui.time_scale / sps->vui.num_units_in_tick / 2;
289  else
290  framerate = 0;
291 
292  desc = ff_h264_guess_level(sps->profile_idc, bit_rate, framerate,
294  if (desc) {
295  level_idc = desc->level_idc;
296  } else {
297  av_log(bsf, AV_LOG_WARNING, "Stream does not appear to "
298  "conform to any level: using level 6.2.\n");
299  level_idc = 62;
300  }
301  } else {
302  level_idc = ctx->level;
303  }
304 
305  if (level_idc == 9) {
306  if (sps->profile_idc == 66 ||
307  sps->profile_idc == 77 ||
308  sps->profile_idc == 88) {
309  sps->level_idc = 11;
310  sps->constraint_set3_flag = 1;
311  } else {
312  sps->level_idc = 9;
313  }
314  } else {
315  sps->level_idc = level_idc;
316  }
317  }
318 
319  if (need_vui)
320  sps->vui_parameters_present_flag = 1;
321 
322  return 0;
323 }
324 
326  AVPacket *pkt,
328  int seek_point)
329 {
332  int err;
333 
334  message = NULL;
335  while (ff_cbs_sei_find_message(ctx->common.output, au,
337  &message) == 0) {
338  H264RawSEIDisplayOrientation *disp = message->payload;
339  int32_t *matrix;
340 
341  matrix = av_malloc(9 * sizeof(int32_t));
342  if (!matrix)
343  return AVERROR(ENOMEM);
344 
346  disp->anticlockwise_rotation *
347  180.0 / 65536.0);
348  av_display_matrix_flip(matrix, disp->hor_flip, disp->ver_flip);
349 
350  // If there are multiple display orientation messages in an
351  // access unit, then the last one added to the packet (i.e.
352  // the first one in the access unit) will prevail.
354  (uint8_t*)matrix,
355  9 * sizeof(int32_t));
356  if (err < 0) {
357  av_log(bsf, AV_LOG_ERROR, "Failed to attach extracted "
358  "displaymatrix side data to packet.\n");
359  av_free(matrix);
360  return AVERROR(ENOMEM);
361  }
362  }
363 
364  if (ctx->display_orientation == BSF_ELEMENT_REMOVE ||
365  ctx->display_orientation == BSF_ELEMENT_INSERT) {
366  ff_cbs_sei_delete_message_type(ctx->common.output, au,
368  }
369 
370  if (ctx->display_orientation == BSF_ELEMENT_INSERT) {
372  &ctx->display_orientation_payload;
373  uint8_t *data;
374  size_t size;
375  int write = 0;
376 
378  if (data && size >= 9 * sizeof(int32_t)) {
379  int32_t matrix[9];
380  double dmatrix[9];
381  int hflip, vflip, i;
382  double scale_x, scale_y, angle;
383 
384  memcpy(matrix, data, sizeof(matrix));
385 
386  for (i = 0; i < 9; i++)
387  dmatrix[i] = matrix[i] / 65536.0;
388 
389  // Extract scale factors.
390  scale_x = hypot(dmatrix[0], dmatrix[3]);
391  scale_y = hypot(dmatrix[1], dmatrix[4]);
392 
393  // Select flips to make the main diagonal positive.
394  hflip = dmatrix[0] < 0.0;
395  vflip = dmatrix[4] < 0.0;
396  if (hflip)
397  scale_x = -scale_x;
398  if (vflip)
399  scale_y = -scale_y;
400 
401  // Rescale.
402  for (i = 0; i < 9; i += 3) {
403  dmatrix[i] /= scale_x;
404  dmatrix[i + 1] /= scale_y;
405  }
406 
407  // Extract rotation.
408  angle = atan2(dmatrix[3], dmatrix[0]);
409 
410  if (!(angle >= -M_PI && angle <= M_PI) ||
411  matrix[2] != 0.0 || matrix[5] != 0.0 ||
412  matrix[6] != 0.0 || matrix[7] != 0.0) {
413  av_log(bsf, AV_LOG_WARNING, "Input display matrix is not "
414  "representable in H.264 parameters.\n");
415  } else {
416  disp->hor_flip = hflip;
417  disp->ver_flip = vflip;
418  disp->anticlockwise_rotation =
419  (uint16_t)rint((angle >= 0.0 ? angle
420  : angle + 2 * M_PI) *
421  32768.0 / M_PI);
422  write = 1;
423  }
424  }
425 
426  if (seek_point) {
427  if (!isnan(ctx->rotate)) {
428  disp->anticlockwise_rotation =
429  (uint16_t)rint((ctx->rotate >= 0.0 ? ctx->rotate
430  : ctx->rotate + 360.0) *
431  65536.0 / 360.0);
432  write = 1;
433  }
434  if (ctx->flip) {
435  disp->hor_flip = !!(ctx->flip & FLIP_HORIZONTAL);
436  disp->ver_flip = !!(ctx->flip & FLIP_VERTICAL);
437  write = 1;
438  }
439  }
440 
441  if (write) {
443 
444  err = ff_cbs_sei_add_message(ctx->common.output, au, 1,
446  disp, NULL);
447  if (err < 0) {
448  av_log(bsf, AV_LOG_ERROR, "Failed to add display orientation "
449  "SEI message to access unit.\n");
450  return err;
451  }
452  }
453  }
454 
455  return 0;
456 }
457 
460 {
462  int err, i, has_sps, seek_point;
463 
464  // If an AUD is present, it must be the first NAL unit.
465  if (au->nb_units && au->units[0].type == H264_NAL_AUD) {
466  if (ctx->aud == BSF_ELEMENT_REMOVE)
467  ff_cbs_delete_unit(au, 0);
468  } else {
469  if (pkt && ctx->aud == BSF_ELEMENT_INSERT) {
470  err = h264_metadata_insert_aud(bsf, au);
471  if (err < 0)
472  return err;
473  }
474  }
475 
476  has_sps = 0;
477  for (i = 0; i < au->nb_units; i++) {
478  if (au->units[i].type == H264_NAL_SPS) {
479  err = h264_metadata_update_sps(bsf, au->units[i].content);
480  if (err < 0)
481  return err;
482  has_sps = 1;
483  }
484  }
485 
486  if (pkt) {
487  // The current packet should be treated as a seek point for metadata
488  // insertion if any of:
489  // - It is the first packet in the stream.
490  // - It contains an SPS, indicating that a sequence might start here.
491  // - It is marked as containing a key frame.
492  seek_point = !ctx->done_first_au || has_sps ||
494  } else {
495  seek_point = 0;
496  }
497 
498  if (ctx->sei_user_data && seek_point) {
499  err = ff_cbs_sei_add_message(ctx->common.output, au, 1,
501  &ctx->sei_user_data_payload, NULL);
502  if (err < 0) {
503  av_log(bsf, AV_LOG_ERROR, "Failed to add user data SEI "
504  "message to access unit.\n");
505  return err;
506  }
507  }
508 
509  if (ctx->delete_filler) {
510  for (i = au->nb_units - 1; i >= 0; i--) {
511  if (au->units[i].type == H264_NAL_FILLER_DATA) {
512  ff_cbs_delete_unit(au, i);
513  continue;
514  }
515  }
516 
517  ff_cbs_sei_delete_message_type(ctx->common.output, au,
519  }
520 
521  if (pkt && ctx->display_orientation != BSF_ELEMENT_PASS) {
523  seek_point);
524  if (err < 0)
525  return err;
526  }
527 
528  if (pkt)
529  ctx->done_first_au = 1;
530 
531  return 0;
532 }
533 
536  .fragment_name = "access unit",
537  .unit_name = "NAL unit",
538  .update_fragment = &h264_metadata_update_fragment,
539 };
540 
542 {
544 
545  if (ctx->sei_user_data) {
546  SEIRawUserDataUnregistered *udu = &ctx->sei_user_data_payload;
547  int i, j;
548 
549  // Parse UUID. It must be a hex string of length 32, possibly
550  // containing '-'s between hex digits (which we ignore).
551  for (i = j = 0; j < 32 && i < 64 && ctx->sei_user_data[i]; i++) {
552  int c, v;
553  c = ctx->sei_user_data[i];
554  if (c == '-') {
555  continue;
556  } else if (av_isxdigit(c)) {
557  c = av_tolower(c);
558  v = (c <= '9' ? c - '0' : c - 'a' + 10);
559  } else {
560  break;
561  }
562  if (j & 1)
563  udu->uuid_iso_iec_11578[j / 2] |= v;
564  else
565  udu->uuid_iso_iec_11578[j / 2] = v << 4;
566  ++j;
567  }
568  if (j == 32 && ctx->sei_user_data[i] == '+') {
569  udu->data = (uint8_t*)ctx->sei_user_data + i + 1;
570  udu->data_length = strlen(udu->data) + 1;
571  } else {
572  av_log(bsf, AV_LOG_ERROR, "Invalid user data: "
573  "must be \"UUID+string\".\n");
574  return AVERROR(EINVAL);
575  }
576  }
577 
579 }
580 
581 #define OFFSET(x) offsetof(H264MetadataContext, x)
582 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM)
583 static const AVOption h264_metadata_options[] = {
584  BSF_ELEMENT_OPTIONS_PIR("aud", "Access Unit Delimiter NAL units",
585  aud, FLAGS),
586 
587  { "sample_aspect_ratio", "Set sample aspect ratio (table E-1)",
588  OFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL,
589  { .dbl = 0.0 }, 0, 65535, FLAGS },
590 
591  { "overscan_appropriate_flag", "Set VUI overscan appropriate flag",
592  OFFSET(overscan_appropriate_flag), AV_OPT_TYPE_INT,
593  { .i64 = -1 }, -1, 1, FLAGS },
594 
595  { "video_format", "Set video format (table E-2)",
596  OFFSET(video_format), AV_OPT_TYPE_INT,
597  { .i64 = -1 }, -1, 7, FLAGS},
598  { "video_full_range_flag", "Set video full range flag",
599  OFFSET(video_full_range_flag), AV_OPT_TYPE_INT,
600  { .i64 = -1 }, -1, 1, FLAGS },
601  { "colour_primaries", "Set colour primaries (table E-3)",
602  OFFSET(colour_primaries), AV_OPT_TYPE_INT,
603  { .i64 = -1 }, -1, 255, FLAGS },
604  { "transfer_characteristics", "Set transfer characteristics (table E-4)",
606  { .i64 = -1 }, -1, 255, FLAGS },
607  { "matrix_coefficients", "Set matrix coefficients (table E-5)",
608  OFFSET(matrix_coefficients), AV_OPT_TYPE_INT,
609  { .i64 = -1 }, -1, 255, FLAGS },
610 
611  { "chroma_sample_loc_type", "Set chroma sample location type (figure E-1)",
612  OFFSET(chroma_sample_loc_type), AV_OPT_TYPE_INT,
613  { .i64 = -1 }, -1, 6, FLAGS },
614 
615  { "tick_rate", "Set VUI tick rate (num_units_in_tick / time_scale)",
616  OFFSET(tick_rate), AV_OPT_TYPE_RATIONAL,
617  { .dbl = 0.0 }, 0, UINT_MAX, FLAGS },
618  { "fixed_frame_rate_flag", "Set VUI fixed frame rate flag",
619  OFFSET(fixed_frame_rate_flag), AV_OPT_TYPE_INT,
620  { .i64 = -1 }, -1, 1, FLAGS },
621 
622  { "crop_left", "Set left border crop offset",
623  OFFSET(crop_left), AV_OPT_TYPE_INT,
624  { .i64 = -1 }, -1, H264_MAX_WIDTH, FLAGS },
625  { "crop_right", "Set right border crop offset",
626  OFFSET(crop_right), AV_OPT_TYPE_INT,
627  { .i64 = -1 }, -1, H264_MAX_WIDTH, FLAGS },
628  { "crop_top", "Set top border crop offset",
629  OFFSET(crop_top), AV_OPT_TYPE_INT,
630  { .i64 = -1 }, -1, H264_MAX_HEIGHT, FLAGS },
631  { "crop_bottom", "Set bottom border crop offset",
632  OFFSET(crop_bottom), AV_OPT_TYPE_INT,
633  { .i64 = -1 }, -1, H264_MAX_HEIGHT, FLAGS },
634 
635  { "sei_user_data", "Insert SEI user data (UUID+string)",
636  OFFSET(sei_user_data), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = FLAGS },
637 
638  { "delete_filler", "Delete all filler (both NAL and SEI)",
639  OFFSET(delete_filler), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS},
640 
641  BSF_ELEMENT_OPTIONS_PIRE("display_orientation",
642  "Display orientation SEI",
643  display_orientation, FLAGS),
644 
645  { "rotate", "Set rotation in display orientation SEI (anticlockwise angle in degrees)",
647  { .dbl = NAN }, -360.0, +360.0, FLAGS },
648  { "flip", "Set flip in display orientation SEI",
650  { .i64 = 0 }, 0, FLIP_HORIZONTAL | FLIP_VERTICAL, FLAGS, "flip" },
651  { "horizontal", "Set hor_flip",
653  { .i64 = FLIP_HORIZONTAL }, .flags = FLAGS, .unit = "flip" },
654  { "vertical", "Set ver_flip",
656  { .i64 = FLIP_VERTICAL }, .flags = FLAGS, .unit = "flip" },
657 
658  { "level", "Set level (table A-1)",
660  { .i64 = LEVEL_UNSET }, LEVEL_UNSET, 0xff, FLAGS, "level" },
661  { "auto", "Attempt to guess level from stream properties",
663  { .i64 = LEVEL_AUTO }, .flags = FLAGS, .unit = "level" },
664 #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
665  { .i64 = value }, .flags = FLAGS, .unit = "level"
666  { LEVEL("1", 10) },
667  { LEVEL("1b", 9) },
668  { LEVEL("1.1", 11) },
669  { LEVEL("1.2", 12) },
670  { LEVEL("1.3", 13) },
671  { LEVEL("2", 20) },
672  { LEVEL("2.1", 21) },
673  { LEVEL("2.2", 22) },
674  { LEVEL("3", 30) },
675  { LEVEL("3.1", 31) },
676  { LEVEL("3.2", 32) },
677  { LEVEL("4", 40) },
678  { LEVEL("4.1", 41) },
679  { LEVEL("4.2", 42) },
680  { LEVEL("5", 50) },
681  { LEVEL("5.1", 51) },
682  { LEVEL("5.2", 52) },
683  { LEVEL("6", 60) },
684  { LEVEL("6.1", 61) },
685  { LEVEL("6.2", 62) },
686 #undef LEVEL
687 
688  { NULL }
689 };
690 
691 static const AVClass h264_metadata_class = {
692  .class_name = "h264_metadata_bsf",
693  .item_name = av_default_item_name,
694  .option = h264_metadata_options,
695  .version = LIBAVUTIL_VERSION_INT,
696 };
697 
698 static const enum AVCodecID h264_metadata_codec_ids[] = {
700 };
701 
703  .name = "h264_metadata",
704  .priv_data_size = sizeof(H264MetadataContext),
705  .priv_class = &h264_metadata_class,
707  .close = &ff_cbs_bsf_generic_close,
710 };
ff_h264_metadata_bsf
const AVBitStreamFilter ff_h264_metadata_bsf
Definition: h264_metadata_bsf.c:702
av_isxdigit
static av_const int av_isxdigit(int c)
Locale-independent conversion of ASCII isxdigit.
Definition: avstring.h:256
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:187
ff_cbs_sei_add_message
int ff_cbs_sei_add_message(CodedBitstreamContext *ctx, CodedBitstreamFragment *au, int prefix, uint32_t payload_type, void *payload_data, AVBufferRef *payload_buf)
Add an SEI message to an access unit.
Definition: cbs_sei.c:247
level
uint8_t level
Definition: svq3.c:204
FLAGS
#define FLAGS
Definition: h264_metadata_bsf.c:582
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
ff_cbs_bsf_generic_init
int ff_cbs_bsf_generic_init(AVBSFContext *bsf, const CBSBSFType *type)
Initialise generic CBS BSF setup.
Definition: cbs_bsf.c:112
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
opt.h
H264MetadataContext::video_full_range_flag
int video_full_range_flag
Definition: h264_metadata_bsf.c:55
H264_NAL_IDR_SLICE
@ H264_NAL_IDR_SLICE
Definition: h264.h:39
H264MetadataContext::sei_user_data
const char * sei_user_data
Definition: h264_metadata_bsf.c:70
CBSBSFType::codec_id
enum AVCodecID codec_id
Definition: cbs_bsf.h:26
message
Definition: api-threadmessage-test.c:46
LEVEL
#define LEVEL(name, value)
BSF_ELEMENT_INSERT
@ BSF_ELEMENT_INSERT
Definition: cbs_bsf.h:98
h264_levels.h
H264MetadataContext::sei_user_data_payload
SEIRawUserDataUnregistered sei_user_data_payload
Definition: h264_metadata_bsf.c:71
cbs_h264.h
dpb_frames
int dpb_frames
Definition: h264_levels.c:159
CodedBitstreamUnit::content
void * content
Pointer to the decomposed form of this unit.
Definition: cbs.h:103
AVBitStreamFilter::name
const char * name
Definition: bsf.h:99
SEIRawMessage
Definition: cbs_sei.h:68
h264_metadata_options
static const AVOption h264_metadata_options[]
Definition: h264_metadata_bsf.c:583
ff_cbs_sei_delete_message_type
void ff_cbs_sei_delete_message_type(CodedBitstreamContext *ctx, CodedBitstreamFragment *au, uint32_t payload_type)
Delete all messages with the given payload type from an access unit.
Definition: cbs_sei.c:350
av_display_matrix_flip
void av_display_matrix_flip(int32_t matrix[9], int hflip, int vflip)
Flip the input matrix horizontally and/or vertically.
Definition: display.c:65
level_idc
int level_idc
Definition: h264_levels.c:25
AVOption
AVOption.
Definition: opt.h:248
H264MetadataContext::aud_nal
H264RawAUD aud_nal
Definition: h264_metadata_bsf.c:48
data
const char data[16]
Definition: mxf.c:142
CBSBSFContext
Definition: cbs_bsf.h:47
FLIP_HORIZONTAL
@ FLIP_HORIZONTAL
Definition: h264_metadata_bsf.c:33
CodedBitstreamUnit::type
CodedBitstreamUnitType type
Codec-specific type of this unit.
Definition: cbs.h:70
h264_metadata_update_sps
static int h264_metadata_update_sps(AVBSFContext *bsf, H264RawSPS *sps)
Definition: h264_metadata_bsf.c:137
cbs.h
av_display_rotation_set
void av_display_rotation_set(int32_t matrix[9], double angle)
Initialize a transformation matrix describing a pure counterclockwise rotation by the specified angle...
Definition: display.c:50
H264MetadataContext::chroma_sample_loc_type
int chroma_sample_loc_type
Definition: h264_metadata_bsf.c:60
filter
filter_frame For filters that do not use the this method is called when a frame is pushed to the filter s input It can be called at any time except in a reentrant way If the input frame is enough to produce then the filter should push the output frames on the output link immediately As an exception to the previous rule if the input frame is enough to produce several output frames then the filter needs output only at least one per link The additional frames can be left buffered in the filter
Definition: filter_design.txt:228
H264MetadataContext::crop_top
int crop_top
Definition: h264_metadata_bsf.c:67
H264MetadataContext::crop_right
int crop_right
Definition: h264_metadata_bsf.c:66
H264LevelDescriptor
Definition: h264_levels.h:25
H264_NAL_AUD
@ H264_NAL_AUD
Definition: h264.h:43
AV_OPT_TYPE_RATIONAL
@ AV_OPT_TYPE_RATIONAL
Definition: opt.h:230
AV_PKT_FLAG_KEY
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:396
AVBSFContext
The bitstream filter state.
Definition: bsf.h:49
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:31
SEI_TYPE_USER_DATA_UNREGISTERED
@ SEI_TYPE_USER_DATA_UNREGISTERED
Definition: sei.h:35
framerate
int framerate
Definition: h264_levels.c:65
bsf.h
av_packet_add_side_data
int av_packet_add_side_data(AVPacket *pkt, enum AVPacketSideDataType type, uint8_t *data, size_t size)
Wrap an existing array as a packet side data.
Definition: avpacket.c:186
cbs_bsf.h
ff_h264_guess_level
const H264LevelDescriptor * ff_h264_guess_level(int profile_idc, int64_t bitrate, int framerate, int width, int height, int max_dec_frame_buffering)
Guess the level of a stream from some parameters.
Definition: h264_levels.c:78
SEIRawUserDataUnregistered::data
uint8_t * data
Definition: cbs_sei.h:45
H264MetadataContext::overscan_appropriate_flag
int overscan_appropriate_flag
Definition: h264_metadata_bsf.c:52
SEIRawUserDataUnregistered
Definition: cbs_sei.h:43
AV_PKT_DATA_DISPLAYMATRIX
@ AV_PKT_DATA_DISPLAYMATRIX
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: packet.h:108
av_reduce
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
Definition: rational.c:35
rotate
static void rotate(const float rot_quaternion[2][4], float *vec)
Rotate vector with given rotation quaternion.
Definition: vf_v360.c:3956
H264MetadataContext::rotate
double rotate
Definition: h264_metadata_bsf.c:76
H264MetadataContext::display_orientation
int display_orientation
Definition: h264_metadata_bsf.c:75
CodedBitstreamFragment::units
CodedBitstreamUnit * units
Pointer to an array of units of length nb_units_allocated.
Definition: cbs.h:164
pkt
AVPacket * pkt
Definition: movenc.c:59
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:181
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
H264MetadataContext::fixed_frame_rate_flag
int fixed_frame_rate_flag
Definition: h264_metadata_bsf.c:63
BSF_ELEMENT_OPTIONS_PIRE
#define BSF_ELEMENT_OPTIONS_PIRE(name, help, field, opt_flags)
Definition: cbs_bsf.h:117
CodedBitstreamFragment
Coded bitstream fragment structure, combining one or more units.
Definition: cbs.h:118
width
#define width
AV_OPT_TYPE_DOUBLE
@ AV_OPT_TYPE_DOUBLE
Definition: opt.h:227
H264MetadataContext::common
CBSBSFContext common
Definition: h264_metadata_bsf.c:43
H264MetadataContext::transfer_characteristics
int transfer_characteristics
Definition: h264_metadata_bsf.c:57
BSF_ELEMENT_REMOVE
@ BSF_ELEMENT_REMOVE
Definition: cbs_bsf.h:100
SEIRawUserDataUnregistered::data_length
size_t data_length
Definition: cbs_sei.h:47
ctx
AVFormatContext * ctx
Definition: movenc.c:48
CROP
#define CROP(border, unit)
H264RawSEIDisplayOrientation::display_orientation_repetition_period
uint16_t display_orientation_repetition_period
Definition: cbs_h264.h:280
NAN
#define NAN
Definition: mathematics.h:64
AV_CODEC_ID_H264
@ AV_CODEC_ID_H264
Definition: codec_id.h:76
h264_metadata_update_fragment
static int h264_metadata_update_fragment(AVBSFContext *bsf, AVPacket *pkt, CodedBitstreamFragment *au)
Definition: h264_metadata_bsf.c:458
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
rint
#define rint
Definition: tablegen.h:41
NULL
#define NULL
Definition: coverity.c:32
ff_cbs_insert_unit_content
int ff_cbs_insert_unit_content(CodedBitstreamFragment *frag, int position, CodedBitstreamUnitType type, void *content, AVBufferRef *content_buf)
Insert a new unit into a fragment with the given content.
Definition: cbs.c:737
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
H264RawSEIDisplayOrientation::anticlockwise_rotation
uint16_t anticlockwise_rotation
Definition: cbs_h264.h:279
isnan
#define isnan(x)
Definition: libm.h:340
BSF_ELEMENT_PASS
@ BSF_ELEMENT_PASS
Definition: cbs_bsf.h:93
H264MetadataContext::delete_filler
int delete_filler
Definition: h264_metadata_bsf.c:73
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
FLIP_VERTICAL
@ FLIP_VERTICAL
Definition: h264_metadata_bsf.c:34
H264MetadataContext::crop_bottom
int crop_bottom
Definition: h264_metadata_bsf.c:68
h264_metadata_handle_display_orientation
static int h264_metadata_handle_display_orientation(AVBSFContext *bsf, AVPacket *pkt, CodedBitstreamFragment *au, int seek_point)
Definition: h264_metadata_bsf.c:325
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
H264_NAL_SPS
@ H264_NAL_SPS
Definition: h264.h:41
AVCodecID
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: codec_id.h:46
h264_metadata_type
static const CBSBSFType h264_metadata_type
Definition: h264_metadata_bsf.c:534
aud
static int FUNC() aud(CodedBitstreamContext *ctx, RWContext *rw, H264RawAUD *current)
Definition: cbs_h264_syntax_template.c:759
H264MetadataContext::flip
int flip
Definition: h264_metadata_bsf.c:77
H264RawSEIDisplayOrientation::hor_flip
uint8_t hor_flip
Definition: cbs_h264.h:277
flip
static void flip(AVCodecContext *avctx, AVFrame *frame)
Definition: rawdec.c:131
H264_NAL_SLICE
@ H264_NAL_SLICE
Definition: h264.h:35
H264RawSliceHeader::slice_type
uint8_t slice_type
Definition: cbs_h264.h:293
CBSBSFType
Definition: cbs_bsf.h:25
hypot
static av_const double hypot(double x, double y)
Definition: libm.h:366
size
int size
Definition: twinvq_data.h:10344
H264_MAX_WIDTH
@ H264_MAX_WIDTH
Definition: h264.h:108
ff_cbs_bsf_generic_close
void ff_cbs_bsf_generic_close(AVBSFContext *bsf)
Close a generic CBS BSF instance.
Definition: cbs_bsf.c:152
transfer_characteristics
static const struct TransferCharacteristics transfer_characteristics[AVCOL_TRC_NB]
Definition: vf_colorspace.c:177
H264RawSEIDisplayOrientation
Definition: cbs_h264.h:275
height
#define height
LEVEL_AUTO
@ LEVEL_AUTO
Definition: h264_metadata_bsf.c:39
H264MetadataContext::aud
int aud
Definition: h264_metadata_bsf.c:47
SET_VUI_FIELD
#define SET_VUI_FIELD(field)
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:371
h264_metadata_init
static int h264_metadata_init(AVBSFContext *bsf)
Definition: h264_metadata_bsf.c:541
H264MetadataContext::colour_primaries
int colour_primaries
Definition: h264_metadata_bsf.c:56
M_PI
#define M_PI
Definition: mathematics.h:52
H264MetadataContext
Definition: h264_metadata_bsf.c:42
OFFSET
#define OFFSET(x)
Definition: h264_metadata_bsf.c:581
h264_sei.h
H264RawSlice::header
H264RawSliceHeader header
Definition: cbs_h264.h:368
h264_metadata_class
static const AVClass h264_metadata_class
Definition: h264_metadata_bsf.c:691
i
int i
Definition: input.c:407
AV_CODEC_ID_NONE
@ AV_CODEC_ID_NONE
Definition: codec_id.h:47
av_packet_get_side_data
uint8_t * av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type, size_t *size)
Get side information from packet.
Definition: avpacket.c:241
ff_cbs_sei_find_message
int ff_cbs_sei_find_message(CodedBitstreamContext *ctx, CodedBitstreamFragment *au, uint32_t payload_type, SEIRawMessage **iter)
Iterate over messages with the given payload type in an access unit.
Definition: cbs_sei.c:297
display.h
common.h
h264_metadata_codec_ids
static enum AVCodecID h264_metadata_codec_ids[]
Definition: h264_metadata_bsf.c:698
SEI_TYPE_FILLER_PAYLOAD
@ SEI_TYPE_FILLER_PAYLOAD
Definition: sei.h:33
AVBSFContext::priv_data
void * priv_data
Opaque filter-specific private data.
Definition: bsf.h:70
ff_cbs_bsf_generic_filter
int ff_cbs_bsf_generic_filter(AVBSFContext *bsf, AVPacket *pkt)
Filter operation for CBS BSF.
Definition: cbs_bsf.c:63
H264RawSEIDisplayOrientation::ver_flip
uint8_t ver_flip
Definition: cbs_h264.h:278
AVClass::class_name
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
sps
static int FUNC() sps(CodedBitstreamContext *ctx, RWContext *rw, H264RawSPS *current)
Definition: cbs_h264_syntax_template.c:260
BSF_ELEMENT_OPTIONS_PIR
#define BSF_ELEMENT_OPTIONS_PIR(name, help, field, opt_flags)
Definition: cbs_bsf.h:106
left
Tag MUST be and< 10hcoeff half pel interpolation filter coefficients, hcoeff[0] are the 2 middle coefficients[1] are the next outer ones and so on, resulting in a filter like:...eff[2], hcoeff[1], hcoeff[0], hcoeff[0], hcoeff[1], hcoeff[2] ... the sign of the coefficients is not explicitly stored but alternates after each coeff and coeff[0] is positive, so ...,+,-,+,-,+,+,-,+,-,+,... hcoeff[0] is not explicitly stored but found by subtracting the sum of all stored coefficients with signs from 32 hcoeff[0]=32 - hcoeff[1] - hcoeff[2] - ... a good choice for hcoeff and htaps is htaps=6 hcoeff={40,-10, 2} an alternative which requires more computations at both encoder and decoder side and may or may not be better is htaps=8 hcoeff={42,-14, 6,-2}ref_frames minimum of the number of available reference frames and max_ref_frames for example the first frame after a key frame always has ref_frames=1spatial_decomposition_type wavelet type 0 is a 9/7 symmetric compact integer wavelet 1 is a 5/3 symmetric compact integer wavelet others are reserved stored as delta from last, last is reset to 0 if always_reset||keyframeqlog quality(logarithmic quantizer scale) stored as delta from last, last is reset to 0 if always_reset||keyframemv_scale stored as delta from last, last is reset to 0 if always_reset||keyframe FIXME check that everything works fine if this changes between framesqbias dequantization bias stored as delta from last, last is reset to 0 if always_reset||keyframeblock_max_depth maximum depth of the block tree stored as delta from last, last is reset to 0 if always_reset||keyframequant_table quantization tableHighlevel bitstream structure:==============================--------------------------------------------|Header|--------------------------------------------|------------------------------------|||Block0||||split?||||yes no||||......... intra?||||:Block01 :yes no||||:Block02 :....... ..........||||:Block03 ::y DC ::ref index:||||:Block04 ::cb DC ::motion x :||||......... :cr DC ::motion y :||||....... ..........|||------------------------------------||------------------------------------|||Block1|||...|--------------------------------------------|------------ ------------ ------------|||Y subbands||Cb subbands||Cr subbands||||--- ---||--- ---||--- ---|||||LL0||HL0||||LL0||HL0||||LL0||HL0|||||--- ---||--- ---||--- ---||||--- ---||--- ---||--- ---|||||LH0||HH0||||LH0||HH0||||LH0||HH0|||||--- ---||--- ---||--- ---||||--- ---||--- ---||--- ---|||||HL1||LH1||||HL1||LH1||||HL1||LH1|||||--- ---||--- ---||--- ---||||--- ---||--- ---||--- ---|||||HH1||HL2||||HH1||HL2||||HH1||HL2|||||...||...||...|||------------ ------------ ------------|--------------------------------------------Decoding process:=================------------|||Subbands|------------||||------------|Intra DC||||LL0 subband prediction ------------|\ Dequantization ------------------- \||Reference frames|\ IDWT|------- -------|Motion \|||Frame 0||Frame 1||Compensation . OBMC v -------|------- -------|--------------. \------> Frame n output Frame Frame<----------------------------------/|...|------------------- Range Coder:============Binary Range Coder:------------------- The implemented range coder is an adapted version based upon "Range encoding: an algorithm for removing redundancy from a digitised message." by G. N. N. Martin. The symbols encoded by the Snow range coder are bits(0|1). The associated probabilities are not fix but change depending on the symbol mix seen so far. bit seen|new state ---------+----------------------------------------------- 0|256 - state_transition_table[256 - old_state];1|state_transition_table[old_state];state_transition_table={ 0, 0, 0, 0, 0, 0, 0, 0, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 190, 191, 192, 194, 194, 195, 196, 197, 198, 199, 200, 201, 202, 202, 204, 205, 206, 207, 208, 209, 209, 210, 211, 212, 213, 215, 215, 216, 217, 218, 219, 220, 220, 222, 223, 224, 225, 226, 227, 227, 229, 229, 230, 231, 232, 234, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 248, 0, 0, 0, 0, 0, 0, 0};FIXME Range Coding of integers:------------------------- FIXME Neighboring Blocks:===================left and top are set to the respective blocks unless they are outside of the image in which case they are set to the Null block top-left is set to the top left block unless it is outside of the image in which case it is set to the left block if this block has no larger parent block or it is at the left side of its parent block and the top right block is not outside of the image then the top right block is used for top-right else the top-left block is used Null block y, cb, cr are 128 level, ref, mx and my are 0 Motion Vector Prediction:=========================1. the motion vectors of all the neighboring blocks are scaled to compensate for the difference of reference frames scaled_mv=(mv *(256 *(current_reference+1)/(mv.reference+1))+128)> the median of the scaled left
Definition: snow.txt:386
H264MetadataContext::video_format
int video_format
Definition: h264_metadata_bsf.c:54
H264MetadataContext::display_orientation_payload
H264RawSEIDisplayOrientation display_orientation_payload
Definition: h264_metadata_bsf.c:78
H264RawAUD
Definition: cbs_h264.h:218
SEI_TYPE_DISPLAY_ORIENTATION
@ SEI_TYPE_DISPLAY_ORIENTATION
Definition: sei.h:77
AVBitStreamFilter
Definition: bsf.h:98
H264MetadataContext::matrix_coefficients
int matrix_coefficients
Definition: h264_metadata_bsf.c:58
H264MetadataContext::done_first_au
int done_first_au
Definition: h264_metadata_bsf.c:45
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
LEVEL_UNSET
@ LEVEL_UNSET
Definition: h264_metadata_bsf.c:38
H264MetadataContext::tick_rate
AVRational tick_rate
Definition: h264_metadata_bsf.c:62
desc
const char * desc
Definition: libsvtav1.c:79
codec_ids
static enum AVCodecID codec_ids[]
Definition: aac_adtstoasc_bsf.c:148
message
static int FUNC() message(CodedBitstreamContext *ctx, RWContext *rw, SEIRawMessage *current)
Definition: cbs_sei_syntax_template.c:147
av_free
#define av_free(p)
Definition: tableprint_vlc.h:34
AVPacket
This structure stores compressed data.
Definition: packet.h:342
H264MetadataContext::level
int level
Definition: h264_metadata_bsf.c:80
AV_OPT_TYPE_FLAGS
@ AV_OPT_TYPE_FLAGS
Definition: opt.h:224
int32_t
int32_t
Definition: audioconvert.c:56
h264.h
H264_NAL_FILLER_DATA
@ H264_NAL_FILLER_DATA
Definition: h264.h:46
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
H264MetadataContext::sample_aspect_ratio
AVRational sample_aspect_ratio
Definition: h264_metadata_bsf.c:50
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
SEIRawUserDataUnregistered::uuid_iso_iec_11578
uint8_t uuid_iso_iec_11578[16]
Definition: cbs_sei.h:44
avstring.h
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:229
H264MetadataContext::crop_left
int crop_left
Definition: h264_metadata_bsf.c:65
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
h264_metadata_insert_aud
static int h264_metadata_insert_aud(AVBSFContext *bsf, CodedBitstreamFragment *au)
Definition: h264_metadata_bsf.c:84
av_tolower
static av_const int av_tolower(int c)
Locale-independent conversion of ASCII characters to lowercase.
Definition: avstring.h:246
CodedBitstreamFragment::nb_units
int nb_units
Number of units in this fragment.
Definition: cbs.h:149
ff_cbs_delete_unit
void ff_cbs_delete_unit(CodedBitstreamFragment *frag, int position)
Delete a unit from a fragment and free all memory it uses.
Definition: cbs.c:812
H264_MAX_DPB_FRAMES
@ H264_MAX_DPB_FRAMES
Definition: h264.h:76
H264RawSlice
Definition: cbs_h264.h:367
H264_MAX_HEIGHT
@ H264_MAX_HEIGHT
Definition: h264.h:109
H264RawSPS
Definition: cbs_h264.h:102