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 "bsf_internal.h"
26 #include "cbs.h"
27 #include "cbs_bsf.h"
28 #include "cbs_h264.h"
29 #include "h264.h"
30 #include "h264_levels.h"
31 #include "h264_sei.h"
32 #include "h2645data.h"
33 
34 enum {
37 };
38 
39 enum {
41  LEVEL_AUTO = -1,
42 };
43 
44 typedef struct H264MetadataContext {
46 
48 
49  int aud;
51 
53 
55 
61 
63 
67 
68  int crop_left;
70  int crop_top;
72 
73  const char *sei_user_data;
75 
77 
79  double rotate;
80  int flip;
82 
83  int level;
85 
86 
89 {
91  int primary_pic_type_mask = 0xff;
92  int err, i, j;
93 
94  static const int primary_pic_type_table[] = {
95  0x084, // 2, 7
96  0x0a5, // 0, 2, 5, 7
97  0x0e7, // 0, 1, 2, 5, 6, 7
98  0x210, // 4, 9
99  0x318, // 3, 4, 8, 9
100  0x294, // 2, 4, 7, 9
101  0x3bd, // 0, 2, 3, 4, 5, 7, 8, 9
102  0x3ff, // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
103  };
104 
105  for (i = 0; i < au->nb_units; i++) {
106  if (au->units[i].type == H264_NAL_SLICE ||
107  au->units[i].type == H264_NAL_IDR_SLICE) {
108  H264RawSlice *slice = au->units[i].content;
109  for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++) {
110  if (!(primary_pic_type_table[j] &
111  (1 << slice->header.slice_type)))
112  primary_pic_type_mask &= ~(1 << j);
113  }
114  }
115  }
116  for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++)
117  if (primary_pic_type_mask & (1 << j))
118  break;
119  if (j >= FF_ARRAY_ELEMS(primary_pic_type_table)) {
120  av_log(bsf, AV_LOG_ERROR, "No usable primary_pic_type: "
121  "invalid slice types?\n");
122  return AVERROR_INVALIDDATA;
123  }
124 
125  ctx->aud_nal = (H264RawAUD) {
126  .nal_unit_header.nal_unit_type = H264_NAL_AUD,
127  .primary_pic_type = j,
128  };
129 
131  &ctx->aud_nal, NULL);
132  if (err < 0) {
133  av_log(bsf, AV_LOG_ERROR, "Failed to insert AUD.\n");
134  return err;
135  }
136 
137  return 0;
138 }
139 
141  H264RawSPS *sps)
142 {
144  int need_vui = 0;
145  int crop_unit_x, crop_unit_y;
146 
147  if (ctx->sample_aspect_ratio.num && ctx->sample_aspect_ratio.den) {
148  int num, den, i;
149 
150  av_reduce(&num, &den, ctx->sample_aspect_ratio.num,
151  ctx->sample_aspect_ratio.den, 65535);
152 
153  for (i = 1; i < FF_ARRAY_ELEMS(ff_h2645_pixel_aspect); i++) {
154  if (num == ff_h2645_pixel_aspect[i].num &&
155  den == ff_h2645_pixel_aspect[i].den)
156  break;
157  }
159  sps->vui.aspect_ratio_idc = 255;
160  sps->vui.sar_width = num;
161  sps->vui.sar_height = den;
162  } else {
163  sps->vui.aspect_ratio_idc = i;
164  }
165  sps->vui.aspect_ratio_info_present_flag = 1;
166  need_vui = 1;
167  }
168 
169 #define SET_VUI_FIELD(field) do { \
170  if (ctx->field >= 0) { \
171  sps->vui.field = ctx->field; \
172  need_vui = 1; \
173  } \
174  } while (0)
175 
176  if (ctx->overscan_appropriate_flag >= 0) {
177  SET_VUI_FIELD(overscan_appropriate_flag);
178  sps->vui.overscan_info_present_flag = 1;
179  }
180 
181  if (ctx->video_format >= 0 ||
182  ctx->video_full_range_flag >= 0 ||
183  ctx->colour_primaries >= 0 ||
184  ctx->transfer_characteristics >= 0 ||
185  ctx->matrix_coefficients >= 0) {
186 
187  SET_VUI_FIELD(video_format);
188 
189  SET_VUI_FIELD(video_full_range_flag);
190 
191  if (ctx->colour_primaries >= 0 ||
192  ctx->transfer_characteristics >= 0 ||
193  ctx->matrix_coefficients >= 0) {
194 
195  SET_VUI_FIELD(colour_primaries);
197  SET_VUI_FIELD(matrix_coefficients);
198 
199  sps->vui.colour_description_present_flag = 1;
200  }
201  sps->vui.video_signal_type_present_flag = 1;
202  }
203 
204  if (ctx->chroma_sample_loc_type >= 0) {
205  sps->vui.chroma_sample_loc_type_top_field =
206  ctx->chroma_sample_loc_type;
207  sps->vui.chroma_sample_loc_type_bottom_field =
208  ctx->chroma_sample_loc_type;
209  sps->vui.chroma_loc_info_present_flag = 1;
210  need_vui = 1;
211  }
212 
213  if (ctx->tick_rate.num && ctx->tick_rate.den) {
214  int num, den;
215 
216  av_reduce(&num, &den, ctx->tick_rate.num, ctx->tick_rate.den,
217  UINT32_MAX > INT_MAX ? UINT32_MAX : INT_MAX);
218 
219  sps->vui.time_scale = num;
220  sps->vui.num_units_in_tick = den;
221 
222  sps->vui.timing_info_present_flag = 1;
223  need_vui = 1;
224  }
225  SET_VUI_FIELD(fixed_frame_rate_flag);
226  if (ctx->zero_new_constraint_set_flags) {
227  sps->constraint_set4_flag = 0;
228  sps->constraint_set5_flag = 0;
229  }
230 
231  if (sps->separate_colour_plane_flag || sps->chroma_format_idc == 0) {
232  crop_unit_x = 1;
233  crop_unit_y = 2 - sps->frame_mbs_only_flag;
234  } else {
235  crop_unit_x = 1 + (sps->chroma_format_idc < 3);
236  crop_unit_y = (1 + (sps->chroma_format_idc < 2)) *
237  (2 - sps->frame_mbs_only_flag);
238  }
239 #define CROP(border, unit) do { \
240  if (ctx->crop_ ## border >= 0) { \
241  if (ctx->crop_ ## border % unit != 0) { \
242  av_log(bsf, AV_LOG_ERROR, "Invalid value for crop_%s: " \
243  "must be a multiple of %d.\n", #border, unit); \
244  return AVERROR(EINVAL); \
245  } \
246  sps->frame_crop_ ## border ## _offset = \
247  ctx->crop_ ## border / unit; \
248  sps->frame_cropping_flag = 1; \
249  } \
250  } while (0)
251  CROP(left, crop_unit_x);
252  CROP(right, crop_unit_x);
253  CROP(top, crop_unit_y);
254  CROP(bottom, crop_unit_y);
255 #undef CROP
256 
257  if (ctx->level != LEVEL_UNSET) {
258  int level_idc;
259 
260  if (ctx->level == LEVEL_AUTO) {
261  const H264LevelDescriptor *desc;
262  int64_t bit_rate;
263  int width, height, dpb_frames;
264  int framerate;
265 
266  if (sps->vui.nal_hrd_parameters_present_flag) {
267  bit_rate = (sps->vui.nal_hrd_parameters.bit_rate_value_minus1[0] + 1) *
268  (INT64_C(1) << (sps->vui.nal_hrd_parameters.bit_rate_scale + 6));
269  } else if (sps->vui.vcl_hrd_parameters_present_flag) {
270  bit_rate = (sps->vui.vcl_hrd_parameters.bit_rate_value_minus1[0] + 1) *
271  (INT64_C(1) << (sps->vui.vcl_hrd_parameters.bit_rate_scale + 6));
272  // Adjust for VCL vs. NAL limits.
273  bit_rate = bit_rate * 6 / 5;
274  } else {
275  bit_rate = 0;
276  }
277 
278  // Don't use max_dec_frame_buffering if it is only inferred.
279  dpb_frames = sps->vui.bitstream_restriction_flag ?
280  sps->vui.max_dec_frame_buffering : H264_MAX_DPB_FRAMES;
281 
282  width = 16 * (sps->pic_width_in_mbs_minus1 + 1);
283  height = 16 * (sps->pic_height_in_map_units_minus1 + 1) *
284  (2 - sps->frame_mbs_only_flag);
285 
286  if (sps->vui.timing_info_present_flag)
287  framerate = sps->vui.time_scale / sps->vui.num_units_in_tick / 2;
288  else
289  framerate = 0;
290 
291  desc = ff_h264_guess_level(sps->profile_idc, bit_rate, framerate,
293  if (desc) {
294  level_idc = desc->level_idc;
295  } else {
296  av_log(bsf, AV_LOG_WARNING, "Stream does not appear to "
297  "conform to any level: using level 6.2.\n");
298  level_idc = 62;
299  }
300  } else {
301  level_idc = ctx->level;
302  }
303 
304  if (level_idc == 9) {
305  if (sps->profile_idc == 66 ||
306  sps->profile_idc == 77 ||
307  sps->profile_idc == 88) {
308  sps->level_idc = 11;
309  sps->constraint_set3_flag = 1;
310  } else {
311  sps->level_idc = 9;
312  }
313  } else {
314  sps->level_idc = level_idc;
315  }
316  }
317 
318  if (need_vui)
319  sps->vui_parameters_present_flag = 1;
320 
321  return 0;
322 }
323 
325  AVPacket *pkt,
327  int seek_point)
328 {
331  int err;
332 
333  message = NULL;
334  while (ff_cbs_sei_find_message(ctx->common.output, au,
336  &message) == 0) {
337  H264RawSEIDisplayOrientation *disp = message->payload;
338  double angle = disp->anticlockwise_rotation * 180.0 / 65536.0;
339  int32_t *matrix;
340 
341  matrix = av_malloc(9 * sizeof(int32_t));
342  if (!matrix)
343  return AVERROR(ENOMEM);
344 
345  /* av_display_rotation_set() expects the angle in the clockwise
346  * direction, hence the first minus.
347  * The below code applies the flips after the rotation, yet
348  * the H.2645 specs require flipping to be applied first.
349  * Because of R O(phi) = O(-phi) R (where R is flipping around
350  * an arbitatry axis and O(phi) is the proper rotation by phi)
351  * we can create display matrices as desired by negating
352  * the degree once for every flip applied. */
353  angle = -angle * (1 - 2 * !!disp->hor_flip) * (1 - 2 * !!disp->ver_flip);
354 
357 
358  // If there are multiple display orientation messages in an
359  // access unit, then the last one added to the packet (i.e.
360  // the first one in the access unit) will prevail.
362  (uint8_t*)matrix,
363  9 * sizeof(int32_t));
364  if (err < 0) {
365  av_log(bsf, AV_LOG_ERROR, "Failed to attach extracted "
366  "displaymatrix side data to packet.\n");
367  av_free(matrix);
368  return AVERROR(ENOMEM);
369  }
370  }
371 
372  if (ctx->display_orientation == BSF_ELEMENT_REMOVE ||
373  ctx->display_orientation == BSF_ELEMENT_INSERT) {
374  ff_cbs_sei_delete_message_type(ctx->common.output, au,
376  }
377 
378  if (ctx->display_orientation == BSF_ELEMENT_INSERT) {
380  &ctx->display_orientation_payload;
381  uint8_t *data;
382  size_t size;
383  int write = 0;
384 
386  if (data && size >= 9 * sizeof(int32_t)) {
387  int32_t matrix[9];
388  double dmatrix[9];
389  int hflip, vflip, i;
390  double scale_x, scale_y, angle;
391 
392  memcpy(matrix, data, sizeof(matrix));
393 
394  for (i = 0; i < 9; i++)
395  dmatrix[i] = matrix[i] / 65536.0;
396 
397  // Extract scale factors.
398  scale_x = hypot(dmatrix[0], dmatrix[3]);
399  scale_y = hypot(dmatrix[1], dmatrix[4]);
400 
401  // Select flips to make the main diagonal positive.
402  hflip = dmatrix[0] < 0.0;
403  vflip = dmatrix[4] < 0.0;
404  if (hflip)
405  scale_x = -scale_x;
406  if (vflip)
407  scale_y = -scale_y;
408 
409  // Rescale.
410  for (i = 0; i < 9; i += 3) {
411  dmatrix[i] /= scale_x;
412  dmatrix[i + 1] /= scale_y;
413  }
414 
415  // Extract rotation.
416  angle = atan2(dmatrix[3], dmatrix[0]);
417 
418  if (!(angle >= -M_PI && angle <= M_PI) ||
419  matrix[2] != 0.0 || matrix[5] != 0.0 ||
420  matrix[6] != 0.0 || matrix[7] != 0.0) {
421  av_log(bsf, AV_LOG_WARNING, "Input display matrix is not "
422  "representable in H.264 parameters.\n");
423  } else {
424  disp->hor_flip = hflip;
425  disp->ver_flip = vflip;
426  disp->anticlockwise_rotation =
427  (uint16_t)rint((angle >= 0.0 ? angle
428  : angle + 2 * M_PI) *
429  32768.0 / M_PI);
430  write = 1;
431  }
432  }
433 
434  if (seek_point) {
435  if (!isnan(ctx->rotate)) {
436  disp->anticlockwise_rotation =
437  (uint16_t)rint((ctx->rotate >= 0.0 ? ctx->rotate
438  : ctx->rotate + 360.0) *
439  65536.0 / 360.0);
440  write = 1;
441  }
442  if (ctx->flip) {
443  disp->hor_flip = !!(ctx->flip & FLIP_HORIZONTAL);
444  disp->ver_flip = !!(ctx->flip & FLIP_VERTICAL);
445  write = 1;
446  }
447  }
448 
449  if (write) {
451 
452  err = ff_cbs_sei_add_message(ctx->common.output, au, 1,
454  disp, NULL);
455  if (err < 0) {
456  av_log(bsf, AV_LOG_ERROR, "Failed to add display orientation "
457  "SEI message to access unit.\n");
458  return err;
459  }
460  }
461  }
462 
463  return 0;
464 }
465 
468 {
470  int err, i, has_sps, seek_point;
471 
472  // If an AUD is present, it must be the first NAL unit.
473  if (au->nb_units && au->units[0].type == H264_NAL_AUD) {
474  if (ctx->aud == BSF_ELEMENT_REMOVE)
475  ff_cbs_delete_unit(au, 0);
476  } else {
477  if (pkt && ctx->aud == BSF_ELEMENT_INSERT) {
478  err = h264_metadata_insert_aud(bsf, au);
479  if (err < 0)
480  return err;
481  }
482  }
483 
484  has_sps = 0;
485  for (i = 0; i < au->nb_units; i++) {
486  if (au->units[i].type == H264_NAL_SPS) {
487  err = h264_metadata_update_sps(bsf, au->units[i].content);
488  if (err < 0)
489  return err;
490  has_sps = 1;
491  }
492  }
493 
494  if (pkt) {
495  // The current packet should be treated as a seek point for metadata
496  // insertion if any of:
497  // - It is the first packet in the stream.
498  // - It contains an SPS, indicating that a sequence might start here.
499  // - It is marked as containing a key frame.
500  seek_point = !ctx->done_first_au || has_sps ||
502  } else {
503  seek_point = 0;
504  }
505 
506  if (ctx->sei_user_data && seek_point) {
507  err = ff_cbs_sei_add_message(ctx->common.output, au, 1,
509  &ctx->sei_user_data_payload, NULL);
510  if (err < 0) {
511  av_log(bsf, AV_LOG_ERROR, "Failed to add user data SEI "
512  "message to access unit.\n");
513  return err;
514  }
515  }
516 
517  if (ctx->delete_filler) {
518  for (i = au->nb_units - 1; i >= 0; i--) {
519  if (au->units[i].type == H264_NAL_FILLER_DATA) {
520  ff_cbs_delete_unit(au, i);
521  continue;
522  }
523  }
524 
525  ff_cbs_sei_delete_message_type(ctx->common.output, au,
527  }
528 
529  if (pkt && ctx->display_orientation != BSF_ELEMENT_PASS) {
531  seek_point);
532  if (err < 0)
533  return err;
534  }
535 
536  if (pkt)
537  ctx->done_first_au = 1;
538 
539  return 0;
540 }
541 
544  .fragment_name = "access unit",
545  .unit_name = "NAL unit",
546  .update_fragment = &h264_metadata_update_fragment,
547 };
548 
550 {
552 
553  if (ctx->sei_user_data) {
554  SEIRawUserDataUnregistered *udu = &ctx->sei_user_data_payload;
555  int i, j;
556 
557  // Parse UUID. It must be a hex string of length 32, possibly
558  // containing '-'s between hex digits (which we ignore).
559  for (i = j = 0; j < 32 && i < 64 && ctx->sei_user_data[i]; i++) {
560  int c, v;
561  c = ctx->sei_user_data[i];
562  if (c == '-') {
563  continue;
564  } else if (av_isxdigit(c)) {
565  c = av_tolower(c);
566  v = (c <= '9' ? c - '0' : c - 'a' + 10);
567  } else {
568  break;
569  }
570  if (j & 1)
571  udu->uuid_iso_iec_11578[j / 2] |= v;
572  else
573  udu->uuid_iso_iec_11578[j / 2] = v << 4;
574  ++j;
575  }
576  if (j == 32 && ctx->sei_user_data[i] == '+') {
577  udu->data = (uint8_t*)ctx->sei_user_data + i + 1;
578  udu->data_length = strlen(udu->data) + 1;
579  } else {
580  av_log(bsf, AV_LOG_ERROR, "Invalid user data: "
581  "must be \"UUID+string\".\n");
582  return AVERROR(EINVAL);
583  }
584  }
585 
587 }
588 
589 #define OFFSET(x) offsetof(H264MetadataContext, x)
590 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM)
591 static const AVOption h264_metadata_options[] = {
592  BSF_ELEMENT_OPTIONS_PIR("aud", "Access Unit Delimiter NAL units",
593  aud, FLAGS),
594 
595  { "sample_aspect_ratio", "Set sample aspect ratio (table E-1)",
596  OFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL,
597  { .dbl = 0.0 }, 0, 65535, FLAGS },
598 
599  { "overscan_appropriate_flag", "Set VUI overscan appropriate flag",
600  OFFSET(overscan_appropriate_flag), AV_OPT_TYPE_INT,
601  { .i64 = -1 }, -1, 1, FLAGS },
602 
603  { "video_format", "Set video format (table E-2)",
604  OFFSET(video_format), AV_OPT_TYPE_INT,
605  { .i64 = -1 }, -1, 7, FLAGS},
606  { "video_full_range_flag", "Set video full range flag",
607  OFFSET(video_full_range_flag), AV_OPT_TYPE_INT,
608  { .i64 = -1 }, -1, 1, FLAGS },
609  { "colour_primaries", "Set colour primaries (table E-3)",
610  OFFSET(colour_primaries), AV_OPT_TYPE_INT,
611  { .i64 = -1 }, -1, 255, FLAGS },
612  { "transfer_characteristics", "Set transfer characteristics (table E-4)",
614  { .i64 = -1 }, -1, 255, FLAGS },
615  { "matrix_coefficients", "Set matrix coefficients (table E-5)",
616  OFFSET(matrix_coefficients), AV_OPT_TYPE_INT,
617  { .i64 = -1 }, -1, 255, FLAGS },
618 
619  { "chroma_sample_loc_type", "Set chroma sample location type (figure E-1)",
620  OFFSET(chroma_sample_loc_type), AV_OPT_TYPE_INT,
621  { .i64 = -1 }, -1, 5, FLAGS },
622 
623  { "tick_rate", "Set VUI tick rate (time_scale / num_units_in_tick)",
624  OFFSET(tick_rate), AV_OPT_TYPE_RATIONAL,
625  { .dbl = 0.0 }, 0, UINT_MAX, FLAGS },
626  { "fixed_frame_rate_flag", "Set VUI fixed frame rate flag",
627  OFFSET(fixed_frame_rate_flag), AV_OPT_TYPE_INT,
628  { .i64 = -1 }, -1, 1, FLAGS },
629  { "zero_new_constraint_set_flags", "Set constraint_set4_flag / constraint_set5_flag to zero",
630  OFFSET(zero_new_constraint_set_flags), AV_OPT_TYPE_BOOL,
631  { .i64 = 0 }, 0, 1, FLAGS },
632 
633  { "crop_left", "Set left border crop offset",
634  OFFSET(crop_left), AV_OPT_TYPE_INT,
635  { .i64 = -1 }, -1, H264_MAX_WIDTH, FLAGS },
636  { "crop_right", "Set right border crop offset",
637  OFFSET(crop_right), AV_OPT_TYPE_INT,
638  { .i64 = -1 }, -1, H264_MAX_WIDTH, FLAGS },
639  { "crop_top", "Set top border crop offset",
640  OFFSET(crop_top), AV_OPT_TYPE_INT,
641  { .i64 = -1 }, -1, H264_MAX_HEIGHT, FLAGS },
642  { "crop_bottom", "Set bottom border crop offset",
643  OFFSET(crop_bottom), AV_OPT_TYPE_INT,
644  { .i64 = -1 }, -1, H264_MAX_HEIGHT, FLAGS },
645 
646  { "sei_user_data", "Insert SEI user data (UUID+string)",
647  OFFSET(sei_user_data), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = FLAGS },
648 
649  { "delete_filler", "Delete all filler (both NAL and SEI)",
650  OFFSET(delete_filler), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS},
651 
652  BSF_ELEMENT_OPTIONS_PIRE("display_orientation",
653  "Display orientation SEI",
654  display_orientation, FLAGS),
655 
656  { "rotate", "Set rotation in display orientation SEI (anticlockwise angle in degrees)",
658  { .dbl = NAN }, -360.0, +360.0, FLAGS },
659  { "flip", "Set flip in display orientation SEI",
661  { .i64 = 0 }, 0, FLIP_HORIZONTAL | FLIP_VERTICAL, FLAGS, "flip" },
662  { "horizontal", "Set hor_flip",
664  { .i64 = FLIP_HORIZONTAL }, .flags = FLAGS, .unit = "flip" },
665  { "vertical", "Set ver_flip",
667  { .i64 = FLIP_VERTICAL }, .flags = FLAGS, .unit = "flip" },
668 
669  { "level", "Set level (table A-1)",
671  { .i64 = LEVEL_UNSET }, LEVEL_UNSET, 0xff, FLAGS, "level" },
672  { "auto", "Attempt to guess level from stream properties",
674  { .i64 = LEVEL_AUTO }, .flags = FLAGS, .unit = "level" },
675 #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
676  { .i64 = value }, .flags = FLAGS, .unit = "level"
677  { LEVEL("1", 10) },
678  { LEVEL("1b", 9) },
679  { LEVEL("1.1", 11) },
680  { LEVEL("1.2", 12) },
681  { LEVEL("1.3", 13) },
682  { LEVEL("2", 20) },
683  { LEVEL("2.1", 21) },
684  { LEVEL("2.2", 22) },
685  { LEVEL("3", 30) },
686  { LEVEL("3.1", 31) },
687  { LEVEL("3.2", 32) },
688  { LEVEL("4", 40) },
689  { LEVEL("4.1", 41) },
690  { LEVEL("4.2", 42) },
691  { LEVEL("5", 50) },
692  { LEVEL("5.1", 51) },
693  { LEVEL("5.2", 52) },
694  { LEVEL("6", 60) },
695  { LEVEL("6.1", 61) },
696  { LEVEL("6.2", 62) },
697 #undef LEVEL
698 
699  { NULL }
700 };
701 
702 static const AVClass h264_metadata_class = {
703  .class_name = "h264_metadata_bsf",
704  .item_name = av_default_item_name,
705  .option = h264_metadata_options,
706  .version = LIBAVUTIL_VERSION_INT,
707 };
708 
709 static const enum AVCodecID h264_metadata_codec_ids[] = {
711 };
712 
714  .p.name = "h264_metadata",
715  .p.codec_ids = h264_metadata_codec_ids,
716  .p.priv_class = &h264_metadata_class,
717  .priv_data_size = sizeof(H264MetadataContext),
719  .close = &ff_cbs_bsf_generic_close,
721 };
av_isxdigit
static av_const int av_isxdigit(int c)
Locale-independent conversion of ASCII isxdigit.
Definition: avstring.h:257
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:186
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:590
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:110
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
bsf_internal.h
opt.h
H264MetadataContext::video_full_range_flag
int video_full_range_flag
Definition: h264_metadata_bsf.c:57
H264MetadataContext::sei_user_data
const char * sei_user_data
Definition: h264_metadata_bsf.c:73
CBSBSFType::codec_id
enum AVCodecID codec_id
Definition: cbs_bsf.h:32
message
Definition: api-threadmessage-test.c:46
LEVEL
#define LEVEL(name, value)
h264_levels.h
H264MetadataContext::sei_user_data_payload
SEIRawUserDataUnregistered sei_user_data_payload
Definition: h264_metadata_bsf.c:74
matrix
Definition: vc1dsp.c:42
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:106
AVBitStreamFilter::name
const char * name
Definition: bsf.h:112
SEIRawMessage
Definition: cbs_sei.h:74
h264_metadata_options
static const AVOption h264_metadata_options[]
Definition: h264_metadata_bsf.c:591
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:66
ff_h264_metadata_bsf
const FFBitStreamFilter ff_h264_metadata_bsf
Definition: h264_metadata_bsf.c:713
level_idc
int level_idc
Definition: h264_levels.c:25
AVOption
AVOption.
Definition: opt.h:251
H264MetadataContext::aud_nal
H264RawAUD aud_nal
Definition: h264_metadata_bsf.c:50
data
const char data[16]
Definition: mxf.c:146
CBSBSFContext
Definition: cbs_bsf.h:53
CodedBitstreamUnit::type
CodedBitstreamUnitType type
Codec-specific type of this unit.
Definition: cbs.h:73
h264_metadata_update_sps
static int h264_metadata_update_sps(AVBSFContext *bsf, H264RawSPS *sps)
Definition: h264_metadata_bsf.c:140
cbs.h
av_display_rotation_set
void av_display_rotation_set(int32_t matrix[9], double angle)
Initialize a transformation matrix describing a pure clockwise rotation by the specified angle (in de...
Definition: display.c:51
H264MetadataContext::chroma_sample_loc_type
int chroma_sample_loc_type
Definition: h264_metadata_bsf.c:62
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:70
H264MetadataContext::crop_right
int crop_right
Definition: h264_metadata_bsf.c:69
H264LevelDescriptor
Definition: h264_levels.h:25
AV_OPT_TYPE_RATIONAL
@ AV_OPT_TYPE_RATIONAL
Definition: opt.h:230
BSF_ELEMENT_PASS
@ BSF_ELEMENT_PASS
Definition: cbs_bsf.h:99
AV_PKT_FLAG_KEY
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:429
AVBSFContext
The bitstream filter state.
Definition: bsf.h:68
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:30
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:196
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:79
H264_NAL_FILLER_DATA
@ H264_NAL_FILLER_DATA
Definition: h264.h:46
SEIRawUserDataUnregistered::data
uint8_t * data
Definition: cbs_sei.h:45
LEVEL_AUTO
@ LEVEL_AUTO
Definition: h264_metadata_bsf.c:41
H264MetadataContext::overscan_appropriate_flag
int overscan_appropriate_flag
Definition: h264_metadata_bsf.c:54
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:109
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
SEI_TYPE_FILLER_PAYLOAD
@ SEI_TYPE_FILLER_PAYLOAD
Definition: sei.h:33
rotate
static void rotate(const float rot_quaternion[2][4], float *vec)
Rotate vector with given rotation quaternion.
Definition: vf_v360.c:4064
H264MetadataContext::rotate
double rotate
Definition: h264_metadata_bsf.c:79
H264MetadataContext::display_orientation
int display_orientation
Definition: h264_metadata_bsf.c:78
CodedBitstreamFragment::units
CodedBitstreamUnit * units
Pointer to an array of units of length nb_units_allocated.
Definition: cbs.h:167
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:180
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:65
BSF_ELEMENT_OPTIONS_PIRE
#define BSF_ELEMENT_OPTIONS_PIRE(name, help, field, opt_flags)
Definition: cbs_bsf.h:123
CodedBitstreamFragment
Coded bitstream fragment structure, combining one or more units.
Definition: cbs.h:121
width
#define width
AV_OPT_TYPE_DOUBLE
@ AV_OPT_TYPE_DOUBLE
Definition: opt.h:227
H264MetadataContext::common
CBSBSFContext common
Definition: h264_metadata_bsf.c:45
H264MetadataContext::transfer_characteristics
int transfer_characteristics
Definition: h264_metadata_bsf.c:59
init
int(* init)(AVBSFContext *ctx)
Definition: dts2pts_bsf.c:365
H264_MAX_DPB_FRAMES
@ H264_MAX_DPB_FRAMES
Definition: h264.h:76
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:301
h2645data.h
NAN
#define NAN
Definition: mathematics.h:64
AV_CODEC_ID_H264
@ AV_CODEC_ID_H264
Definition: codec_id.h:79
h264_metadata_update_fragment
static int h264_metadata_update_fragment(AVBSFContext *bsf, AVPacket *pkt, CodedBitstreamFragment *au)
Definition: h264_metadata_bsf.c:466
LEVEL_UNSET
@ LEVEL_UNSET
Definition: h264_metadata_bsf.c:40
H264_NAL_AUD
@ H264_NAL_AUD
Definition: h264.h:43
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
rint
#define rint
Definition: tablegen.h:41
NULL
#define NULL
Definition: coverity.c:32
FFBitStreamFilter
Definition: bsf_internal.h:27
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:740
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
H264RawSEIDisplayOrientation::anticlockwise_rotation
uint16_t anticlockwise_rotation
Definition: cbs_h264.h:300
isnan
#define isnan(x)
Definition: libm.h:340
H264MetadataContext::delete_filler
int delete_filler
Definition: h264_metadata_bsf.c:76
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:237
H264MetadataContext::crop_bottom
int crop_bottom
Definition: h264_metadata_bsf.c:71
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:324
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
FLIP_VERTICAL
@ FLIP_VERTICAL
Definition: h264_metadata_bsf.c:36
AVCodecID
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: codec_id.h:49
h264_metadata_type
static const CBSBSFType h264_metadata_type
Definition: h264_metadata_bsf.c:542
FFBitStreamFilter::p
AVBitStreamFilter p
The public AVBitStreamFilter.
Definition: bsf_internal.h:31
aud
static int FUNC() aud(CodedBitstreamContext *ctx, RWContext *rw, H264RawAUD *current)
Definition: cbs_h264_syntax_template.c:842
H264MetadataContext::flip
int flip
Definition: h264_metadata_bsf.c:80
H264RawSEIDisplayOrientation::hor_flip
uint8_t hor_flip
Definition: cbs_h264.h:298
flip
static void flip(AVCodecContext *avctx, AVFrame *frame)
Definition: rawdec.c:132
H264RawSliceHeader::slice_type
uint8_t slice_type
Definition: cbs_h264.h:314
CBSBSFType
Definition: cbs_bsf.h:31
hypot
static av_const double hypot(double x, double y)
Definition: libm.h:366
size
int size
Definition: twinvq_data.h:10344
ff_cbs_bsf_generic_close
void ff_cbs_bsf_generic_close(AVBSFContext *bsf)
Close a generic CBS BSF instance.
Definition: cbs_bsf.c:150
transfer_characteristics
static const struct TransferCharacteristics transfer_characteristics[AVCOL_TRC_NB]
Definition: vf_colorspace.c:165
H264RawSEIDisplayOrientation
Definition: cbs_h264.h:296
height
#define height
H264MetadataContext::aud
int aud
Definition: h264_metadata_bsf.c:49
SET_VUI_FIELD
#define SET_VUI_FIELD(field)
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:380
h264_metadata_init
static int h264_metadata_init(AVBSFContext *bsf)
Definition: h264_metadata_bsf.c:549
H264MetadataContext::colour_primaries
int colour_primaries
Definition: h264_metadata_bsf.c:58
M_PI
#define M_PI
Definition: mathematics.h:52
H264MetadataContext
Definition: h264_metadata_bsf.c:44
OFFSET
#define OFFSET(x)
Definition: h264_metadata_bsf.c:589
h264_sei.h
H264RawSlice::header
H264RawSliceHeader header
Definition: cbs_h264.h:389
H264_MAX_WIDTH
@ H264_MAX_WIDTH
Definition: h264.h:108
h264_metadata_class
static const AVClass h264_metadata_class
Definition: h264_metadata_bsf.c:702
AV_CODEC_ID_NONE
@ AV_CODEC_ID_NONE
Definition: codec_id.h:50
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
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:251
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:709
H264_NAL_SLICE
@ H264_NAL_SLICE
Definition: h264.h:35
SEI_TYPE_DISPLAY_ORIENTATION
@ SEI_TYPE_DISPLAY_ORIENTATION
Definition: sei.h:77
ff_h2645_pixel_aspect
const AVRational ff_h2645_pixel_aspect[]
Definition: h2645data.c:21
AVBSFContext::priv_data
void * priv_data
Opaque filter-specific private data.
Definition: bsf.h:83
H264_MAX_HEIGHT
@ H264_MAX_HEIGHT
Definition: h264.h:109
ff_cbs_bsf_generic_filter
int ff_cbs_bsf_generic_filter(AVBSFContext *bsf, AVPacket *pkt)
Filter operation for CBS BSF.
Definition: cbs_bsf.c:61
H264RawSEIDisplayOrientation::ver_flip
uint8_t ver_flip
Definition: cbs_h264.h:299
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:71
H264_NAL_SPS
@ H264_NAL_SPS
Definition: h264.h:41
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:112
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:56
H264MetadataContext::display_orientation_payload
H264RawSEIDisplayOrientation display_orientation_payload
Definition: h264_metadata_bsf.c:81
H264RawAUD
Definition: cbs_h264.h:218
FLIP_HORIZONTAL
@ FLIP_HORIZONTAL
Definition: h264_metadata_bsf.c:35
SEI_TYPE_USER_DATA_UNREGISTERED
@ SEI_TYPE_USER_DATA_UNREGISTERED
Definition: sei.h:35
H264MetadataContext::matrix_coefficients
int matrix_coefficients
Definition: h264_metadata_bsf.c:60
H264MetadataContext::done_first_au
int done_first_au
Definition: h264_metadata_bsf.c:47
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
H264MetadataContext::tick_rate
AVRational tick_rate
Definition: h264_metadata_bsf.c:64
desc
const char * desc
Definition: libsvtav1.c:83
H264MetadataContext::zero_new_constraint_set_flags
int zero_new_constraint_set_flags
Definition: h264_metadata_bsf.c:66
message
static int FUNC() message(CodedBitstreamContext *ctx, RWContext *rw, SEIRawMessage *current)
Definition: cbs_sei_syntax_template.c:164
BSF_ELEMENT_REMOVE
@ BSF_ELEMENT_REMOVE
Definition: cbs_bsf.h:106
av_free
#define av_free(p)
Definition: tableprint_vlc.h:33
AVPacket
This structure stores compressed data.
Definition: packet.h:351
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:244
H264MetadataContext::level
int level
Definition: h264_metadata_bsf.c:83
AV_OPT_TYPE_FLAGS
@ AV_OPT_TYPE_FLAGS
Definition: opt.h:224
int32_t
int32_t
Definition: audioconvert.c:56
h264.h
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
H264MetadataContext::sample_aspect_ratio
AVRational sample_aspect_ratio
Definition: h264_metadata_bsf.c:52
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:61
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
H264_NAL_IDR_SLICE
@ H264_NAL_IDR_SLICE
Definition: h264.h:39
H264MetadataContext::crop_left
int crop_left
Definition: h264_metadata_bsf.c:68
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:87
av_tolower
static av_const int av_tolower(int c)
Locale-independent conversion of ASCII characters to lowercase.
Definition: avstring.h:247
CodedBitstreamFragment::nb_units
int nb_units
Number of units in this fragment.
Definition: cbs.h:152
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:823
BSF_ELEMENT_INSERT
@ BSF_ELEMENT_INSERT
Definition: cbs_bsf.h:104
H264RawSlice
Definition: cbs_h264.h:388
H264RawSPS
Definition: cbs_h264.h:102