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
33 enum {
34 FLIP_HORIZONTAL = 1,
35 FLIP_VERTICAL = 2,
36 };
37
38 enum {
39 LEVEL_UNSET = -2,
40 LEVEL_AUTO = -1,
41 };
42
43 typedef struct H264MetadataContext {
44 CBSBSFContext common;
45
46 int done_first_au;
47
48 int aud;
49 H264RawAUD aud_nal;
50
51 AVRational sample_aspect_ratio;
52
53 int overscan_appropriate_flag;
54
55 int video_format;
56 int video_full_range_flag;
57 int colour_primaries;
58 int transfer_characteristics;
59 int matrix_coefficients;
60
61 int chroma_sample_loc_type;
62
63 AVRational tick_rate;
64 int fixed_frame_rate_flag;
65 int zero_new_constraint_set_flags;
66
67 int crop_left;
68 int crop_right;
69 int crop_top;
70 int crop_bottom;
71
72 const char *sei_user_data;
73 SEIRawUserDataUnregistered sei_user_data_payload;
74
75 int delete_filler;
76
77 int display_orientation;
78 double rotate;
79 int flip;
80 H264RawSEIDisplayOrientation display_orientation_payload;
81
82 int level;
83 } H264MetadataContext;
84
85
h264_metadata_insert_aud(AVBSFContext *bsf, CodedBitstreamFragment *au)86 static int h264_metadata_insert_aud(AVBSFContext *bsf,
87 CodedBitstreamFragment *au)
88 {
89 H264MetadataContext *ctx = bsf->priv_data;
90 int primary_pic_type_mask = 0xff;
91 int err, i, j;
92
93 static const int primary_pic_type_table[] = {
94 0x084, // 2, 7
95 0x0a5, // 0, 2, 5, 7
96 0x0e7, // 0, 1, 2, 5, 6, 7
97 0x210, // 4, 9
98 0x318, // 3, 4, 8, 9
99 0x294, // 2, 4, 7, 9
100 0x3bd, // 0, 2, 3, 4, 5, 7, 8, 9
101 0x3ff, // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
102 };
103
104 for (i = 0; i < au->nb_units; i++) {
105 if (au->units[i].type == H264_NAL_SLICE ||
106 au->units[i].type == H264_NAL_IDR_SLICE) {
107 H264RawSlice *slice = au->units[i].content;
108 for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++) {
109 if (!(primary_pic_type_table[j] &
110 (1 << slice->header.slice_type)))
111 primary_pic_type_mask &= ~(1 << j);
112 }
113 }
114 }
115 for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++)
116 if (primary_pic_type_mask & (1 << j))
117 break;
118 if (j >= FF_ARRAY_ELEMS(primary_pic_type_table)) {
119 av_log(bsf, AV_LOG_ERROR, "No usable primary_pic_type: "
120 "invalid slice types?\n");
121 return AVERROR_INVALIDDATA;
122 }
123
124 ctx->aud_nal = (H264RawAUD) {
125 .nal_unit_header.nal_unit_type = H264_NAL_AUD,
126 .primary_pic_type = j,
127 };
128
129 err = ff_cbs_insert_unit_content(au, 0, H264_NAL_AUD,
130 &ctx->aud_nal, NULL);
131 if (err < 0) {
132 av_log(bsf, AV_LOG_ERROR, "Failed to insert AUD.\n");
133 return err;
134 }
135
136 return 0;
137 }
138
h264_metadata_update_sps(AVBSFContext *bsf, H264RawSPS *sps)139 static int h264_metadata_update_sps(AVBSFContext *bsf,
140 H264RawSPS *sps)
141 {
142 H264MetadataContext *ctx = bsf->priv_data;
143 int need_vui = 0;
144 int crop_unit_x, crop_unit_y;
145
146 if (ctx->sample_aspect_ratio.num && ctx->sample_aspect_ratio.den) {
147 // Table E-1.
148 static const AVRational sar_idc[] = {
149 { 0, 0 }, // Unspecified (never written here).
150 { 1, 1 }, { 12, 11 }, { 10, 11 }, { 16, 11 },
151 { 40, 33 }, { 24, 11 }, { 20, 11 }, { 32, 11 },
152 { 80, 33 }, { 18, 11 }, { 15, 11 }, { 64, 33 },
153 { 160, 99 }, { 4, 3 }, { 3, 2 }, { 2, 1 },
154 };
155 int num, den, i;
156
157 av_reduce(&num, &den, ctx->sample_aspect_ratio.num,
158 ctx->sample_aspect_ratio.den, 65535);
159
160 for (i = 1; i < FF_ARRAY_ELEMS(sar_idc); i++) {
161 if (num == sar_idc[i].num &&
162 den == sar_idc[i].den)
163 break;
164 }
165 if (i == FF_ARRAY_ELEMS(sar_idc)) {
166 sps->vui.aspect_ratio_idc = 255;
167 sps->vui.sar_width = num;
168 sps->vui.sar_height = den;
169 } else {
170 sps->vui.aspect_ratio_idc = i;
171 }
172 sps->vui.aspect_ratio_info_present_flag = 1;
173 need_vui = 1;
174 }
175
176 #define SET_VUI_FIELD(field) do { \
177 if (ctx->field >= 0) { \
178 sps->vui.field = ctx->field; \
179 need_vui = 1; \
180 } \
181 } while (0)
182
183 if (ctx->overscan_appropriate_flag >= 0) {
184 SET_VUI_FIELD(overscan_appropriate_flag);
185 sps->vui.overscan_info_present_flag = 1;
186 }
187
188 if (ctx->video_format >= 0 ||
189 ctx->video_full_range_flag >= 0 ||
190 ctx->colour_primaries >= 0 ||
191 ctx->transfer_characteristics >= 0 ||
192 ctx->matrix_coefficients >= 0) {
193
194 SET_VUI_FIELD(video_format);
195
196 SET_VUI_FIELD(video_full_range_flag);
197
198 if (ctx->colour_primaries >= 0 ||
199 ctx->transfer_characteristics >= 0 ||
200 ctx->matrix_coefficients >= 0) {
201
202 SET_VUI_FIELD(colour_primaries);
203 SET_VUI_FIELD(transfer_characteristics);
204 SET_VUI_FIELD(matrix_coefficients);
205
206 sps->vui.colour_description_present_flag = 1;
207 }
208 sps->vui.video_signal_type_present_flag = 1;
209 }
210
211 if (ctx->chroma_sample_loc_type >= 0) {
212 sps->vui.chroma_sample_loc_type_top_field =
213 ctx->chroma_sample_loc_type;
214 sps->vui.chroma_sample_loc_type_bottom_field =
215 ctx->chroma_sample_loc_type;
216 sps->vui.chroma_loc_info_present_flag = 1;
217 need_vui = 1;
218 }
219
220 if (ctx->tick_rate.num && ctx->tick_rate.den) {
221 int num, den;
222
223 av_reduce(&num, &den, ctx->tick_rate.num, ctx->tick_rate.den,
224 UINT32_MAX > INT_MAX ? UINT32_MAX : INT_MAX);
225
226 sps->vui.time_scale = num;
227 sps->vui.num_units_in_tick = den;
228
229 sps->vui.timing_info_present_flag = 1;
230 need_vui = 1;
231 }
232 SET_VUI_FIELD(fixed_frame_rate_flag);
233 if (ctx->zero_new_constraint_set_flags) {
234 sps->constraint_set4_flag = 0;
235 sps->constraint_set5_flag = 0;
236 }
237
238 if (sps->separate_colour_plane_flag || sps->chroma_format_idc == 0) {
239 crop_unit_x = 1;
240 crop_unit_y = 2 - sps->frame_mbs_only_flag;
241 } else {
242 crop_unit_x = 1 + (sps->chroma_format_idc < 3);
243 crop_unit_y = (1 + (sps->chroma_format_idc < 2)) *
244 (2 - sps->frame_mbs_only_flag);
245 }
246 #define CROP(border, unit) do { \
247 if (ctx->crop_ ## border >= 0) { \
248 if (ctx->crop_ ## border % unit != 0) { \
249 av_log(bsf, AV_LOG_ERROR, "Invalid value for crop_%s: " \
250 "must be a multiple of %d.\n", #border, unit); \
251 return AVERROR(EINVAL); \
252 } \
253 sps->frame_crop_ ## border ## _offset = \
254 ctx->crop_ ## border / unit; \
255 sps->frame_cropping_flag = 1; \
256 } \
257 } while (0)
258 CROP(left, crop_unit_x);
259 CROP(right, crop_unit_x);
260 CROP(top, crop_unit_y);
261 CROP(bottom, crop_unit_y);
262 #undef CROP
263
264 if (ctx->level != LEVEL_UNSET) {
265 int level_idc;
266
267 if (ctx->level == LEVEL_AUTO) {
268 const H264LevelDescriptor *desc;
269 int64_t bit_rate;
270 int width, height, dpb_frames;
271 int framerate;
272
273 if (sps->vui.nal_hrd_parameters_present_flag) {
274 bit_rate = (sps->vui.nal_hrd_parameters.bit_rate_value_minus1[0] + 1) *
275 (INT64_C(1) << (sps->vui.nal_hrd_parameters.bit_rate_scale + 6));
276 } else if (sps->vui.vcl_hrd_parameters_present_flag) {
277 bit_rate = (sps->vui.vcl_hrd_parameters.bit_rate_value_minus1[0] + 1) *
278 (INT64_C(1) << (sps->vui.vcl_hrd_parameters.bit_rate_scale + 6));
279 // Adjust for VCL vs. NAL limits.
280 bit_rate = bit_rate * 6 / 5;
281 } else {
282 bit_rate = 0;
283 }
284
285 // Don't use max_dec_frame_buffering if it is only inferred.
286 dpb_frames = sps->vui.bitstream_restriction_flag ?
287 sps->vui.max_dec_frame_buffering : H264_MAX_DPB_FRAMES;
288
289 width = 16 * (sps->pic_width_in_mbs_minus1 + 1);
290 height = 16 * (sps->pic_height_in_map_units_minus1 + 1) *
291 (2 - sps->frame_mbs_only_flag);
292
293 if (sps->vui.timing_info_present_flag)
294 framerate = sps->vui.time_scale / sps->vui.num_units_in_tick / 2;
295 else
296 framerate = 0;
297
298 desc = ff_h264_guess_level(sps->profile_idc, bit_rate, framerate,
299 width, height, dpb_frames);
300 if (desc) {
301 level_idc = desc->level_idc;
302 } else {
303 av_log(bsf, AV_LOG_WARNING, "Stream does not appear to "
304 "conform to any level: using level 6.2.\n");
305 level_idc = 62;
306 }
307 } else {
308 level_idc = ctx->level;
309 }
310
311 if (level_idc == 9) {
312 if (sps->profile_idc == 66 ||
313 sps->profile_idc == 77 ||
314 sps->profile_idc == 88) {
315 sps->level_idc = 11;
316 sps->constraint_set3_flag = 1;
317 } else {
318 sps->level_idc = 9;
319 }
320 } else {
321 sps->level_idc = level_idc;
322 }
323 }
324
325 if (need_vui)
326 sps->vui_parameters_present_flag = 1;
327
328 return 0;
329 }
330
h264_metadata_handle_display_orientation(AVBSFContext *bsf, AVPacket *pkt, CodedBitstreamFragment *au, int seek_point)331 static int h264_metadata_handle_display_orientation(AVBSFContext *bsf,
332 AVPacket *pkt,
333 CodedBitstreamFragment *au,
334 int seek_point)
335 {
336 H264MetadataContext *ctx = bsf->priv_data;
337 SEIRawMessage *message;
338 int err;
339
340 message = NULL;
341 while (ff_cbs_sei_find_message(ctx->common.output, au,
342 SEI_TYPE_DISPLAY_ORIENTATION,
343 &message) == 0) {
344 H264RawSEIDisplayOrientation *disp = message->payload;
345 double angle = disp->anticlockwise_rotation * 180.0 / 65536.0;
346 int32_t *matrix;
347
348 matrix = av_malloc(9 * sizeof(int32_t));
349 if (!matrix)
350 return AVERROR(ENOMEM);
351
352 /* av_display_rotation_set() expects the angle in the clockwise
353 * direction, hence the first minus.
354 * The below code applies the flips after the rotation, yet
355 * the H.2645 specs require flipping to be applied first.
356 * Because of R O(phi) = O(-phi) R (where R is flipping around
357 * an arbitatry axis and O(phi) is the proper rotation by phi)
358 * we can create display matrices as desired by negating
359 * the degree once for every flip applied. */
360 angle = -angle * (1 - 2 * !!disp->hor_flip) * (1 - 2 * !!disp->ver_flip);
361
362 av_display_rotation_set(matrix, angle);
363 av_display_matrix_flip(matrix, disp->hor_flip, disp->ver_flip);
364
365 // If there are multiple display orientation messages in an
366 // access unit, then the last one added to the packet (i.e.
367 // the first one in the access unit) will prevail.
368 err = av_packet_add_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX,
369 (uint8_t*)matrix,
370 9 * sizeof(int32_t));
371 if (err < 0) {
372 av_log(bsf, AV_LOG_ERROR, "Failed to attach extracted "
373 "displaymatrix side data to packet.\n");
374 av_free(matrix);
375 return AVERROR(ENOMEM);
376 }
377 }
378
379 if (ctx->display_orientation == BSF_ELEMENT_REMOVE ||
380 ctx->display_orientation == BSF_ELEMENT_INSERT) {
381 ff_cbs_sei_delete_message_type(ctx->common.output, au,
382 SEI_TYPE_DISPLAY_ORIENTATION);
383 }
384
385 if (ctx->display_orientation == BSF_ELEMENT_INSERT) {
386 H264RawSEIDisplayOrientation *disp =
387 &ctx->display_orientation_payload;
388 uint8_t *data;
389 size_t size;
390 int write = 0;
391
392 data = av_packet_get_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX, &size);
393 if (data && size >= 9 * sizeof(int32_t)) {
394 int32_t matrix[9];
395 double dmatrix[9];
396 int hflip, vflip, i;
397 double scale_x, scale_y, angle;
398
399 memcpy(matrix, data, sizeof(matrix));
400
401 for (i = 0; i < 9; i++)
402 dmatrix[i] = matrix[i] / 65536.0;
403
404 // Extract scale factors.
405 scale_x = hypot(dmatrix[0], dmatrix[3]);
406 scale_y = hypot(dmatrix[1], dmatrix[4]);
407
408 // Select flips to make the main diagonal positive.
409 hflip = dmatrix[0] < 0.0;
410 vflip = dmatrix[4] < 0.0;
411 if (hflip)
412 scale_x = -scale_x;
413 if (vflip)
414 scale_y = -scale_y;
415
416 // Rescale.
417 for (i = 0; i < 9; i += 3) {
418 dmatrix[i] /= scale_x;
419 dmatrix[i + 1] /= scale_y;
420 }
421
422 // Extract rotation.
423 angle = atan2(dmatrix[3], dmatrix[0]);
424
425 if (!(angle >= -M_PI && angle <= M_PI) ||
426 matrix[2] != 0.0 || matrix[5] != 0.0 ||
427 matrix[6] != 0.0 || matrix[7] != 0.0) {
428 av_log(bsf, AV_LOG_WARNING, "Input display matrix is not "
429 "representable in H.264 parameters.\n");
430 } else {
431 disp->hor_flip = hflip;
432 disp->ver_flip = vflip;
433 disp->anticlockwise_rotation =
434 (uint16_t)rint((angle >= 0.0 ? angle
435 : angle + 2 * M_PI) *
436 32768.0 / M_PI);
437 write = 1;
438 }
439 }
440
441 if (seek_point) {
442 if (!isnan(ctx->rotate)) {
443 disp->anticlockwise_rotation =
444 (uint16_t)rint((ctx->rotate >= 0.0 ? ctx->rotate
445 : ctx->rotate + 360.0) *
446 65536.0 / 360.0);
447 write = 1;
448 }
449 if (ctx->flip) {
450 disp->hor_flip = !!(ctx->flip & FLIP_HORIZONTAL);
451 disp->ver_flip = !!(ctx->flip & FLIP_VERTICAL);
452 write = 1;
453 }
454 }
455
456 if (write) {
457 disp->display_orientation_repetition_period = 1;
458
459 err = ff_cbs_sei_add_message(ctx->common.output, au, 1,
460 SEI_TYPE_DISPLAY_ORIENTATION,
461 disp, NULL);
462 if (err < 0) {
463 av_log(bsf, AV_LOG_ERROR, "Failed to add display orientation "
464 "SEI message to access unit.\n");
465 return err;
466 }
467 }
468 }
469
470 return 0;
471 }
472
h264_metadata_update_fragment(AVBSFContext *bsf, AVPacket *pkt, CodedBitstreamFragment *au)473 static int h264_metadata_update_fragment(AVBSFContext *bsf, AVPacket *pkt,
474 CodedBitstreamFragment *au)
475 {
476 H264MetadataContext *ctx = bsf->priv_data;
477 int err, i, has_sps, seek_point;
478
479 // If an AUD is present, it must be the first NAL unit.
480 if (au->nb_units && au->units[0].type == H264_NAL_AUD) {
481 if (ctx->aud == BSF_ELEMENT_REMOVE)
482 ff_cbs_delete_unit(au, 0);
483 } else {
484 if (pkt && ctx->aud == BSF_ELEMENT_INSERT) {
485 err = h264_metadata_insert_aud(bsf, au);
486 if (err < 0)
487 return err;
488 }
489 }
490
491 has_sps = 0;
492 for (i = 0; i < au->nb_units; i++) {
493 if (au->units[i].type == H264_NAL_SPS) {
494 err = h264_metadata_update_sps(bsf, au->units[i].content);
495 if (err < 0)
496 return err;
497 has_sps = 1;
498 }
499 }
500
501 if (pkt) {
502 // The current packet should be treated as a seek point for metadata
503 // insertion if any of:
504 // - It is the first packet in the stream.
505 // - It contains an SPS, indicating that a sequence might start here.
506 // - It is marked as containing a key frame.
507 seek_point = !ctx->done_first_au || has_sps ||
508 (pkt->flags & AV_PKT_FLAG_KEY);
509 } else {
510 seek_point = 0;
511 }
512
513 if (ctx->sei_user_data && seek_point) {
514 err = ff_cbs_sei_add_message(ctx->common.output, au, 1,
515 SEI_TYPE_USER_DATA_UNREGISTERED,
516 &ctx->sei_user_data_payload, NULL);
517 if (err < 0) {
518 av_log(bsf, AV_LOG_ERROR, "Failed to add user data SEI "
519 "message to access unit.\n");
520 return err;
521 }
522 }
523
524 if (ctx->delete_filler) {
525 for (i = au->nb_units - 1; i >= 0; i--) {
526 if (au->units[i].type == H264_NAL_FILLER_DATA) {
527 ff_cbs_delete_unit(au, i);
528 continue;
529 }
530 }
531
532 ff_cbs_sei_delete_message_type(ctx->common.output, au,
533 SEI_TYPE_FILLER_PAYLOAD);
534 }
535
536 if (pkt && ctx->display_orientation != BSF_ELEMENT_PASS) {
537 err = h264_metadata_handle_display_orientation(bsf, pkt, au,
538 seek_point);
539 if (err < 0)
540 return err;
541 }
542
543 if (pkt)
544 ctx->done_first_au = 1;
545
546 return 0;
547 }
548
549 static const CBSBSFType h264_metadata_type = {
550 .codec_id = AV_CODEC_ID_H264,
551 .fragment_name = "access unit",
552 .unit_name = "NAL unit",
553 .update_fragment = &h264_metadata_update_fragment,
554 };
555
h264_metadata_init(AVBSFContext *bsf)556 static int h264_metadata_init(AVBSFContext *bsf)
557 {
558 H264MetadataContext *ctx = bsf->priv_data;
559
560 if (ctx->sei_user_data) {
561 SEIRawUserDataUnregistered *udu = &ctx->sei_user_data_payload;
562 int i, j;
563
564 // Parse UUID. It must be a hex string of length 32, possibly
565 // containing '-'s between hex digits (which we ignore).
566 for (i = j = 0; j < 32 && i < 64 && ctx->sei_user_data[i]; i++) {
567 int c, v;
568 c = ctx->sei_user_data[i];
569 if (c == '-') {
570 continue;
571 } else if (av_isxdigit(c)) {
572 c = av_tolower(c);
573 v = (c <= '9' ? c - '0' : c - 'a' + 10);
574 } else {
575 break;
576 }
577 if (j & 1)
578 udu->uuid_iso_iec_11578[j / 2] |= v;
579 else
580 udu->uuid_iso_iec_11578[j / 2] = v << 4;
581 ++j;
582 }
583 if (j == 32 && ctx->sei_user_data[i] == '+') {
584 udu->data = (uint8_t*)ctx->sei_user_data + i + 1;
585 udu->data_length = strlen(udu->data) + 1;
586 } else {
587 av_log(bsf, AV_LOG_ERROR, "Invalid user data: "
588 "must be \"UUID+string\".\n");
589 return AVERROR(EINVAL);
590 }
591 }
592
593 return ff_cbs_bsf_generic_init(bsf, &h264_metadata_type);
594 }
595
596 #define OFFSET(x) offsetof(H264MetadataContext, x)
597 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM)
598 static const AVOption h264_metadata_options[] = {
599 BSF_ELEMENT_OPTIONS_PIR("aud", "Access Unit Delimiter NAL units",
600 aud, FLAGS),
601
602 { "sample_aspect_ratio", "Set sample aspect ratio (table E-1)",
603 OFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL,
604 { .dbl = 0.0 }, 0, 65535, FLAGS },
605
606 { "overscan_appropriate_flag", "Set VUI overscan appropriate flag",
607 OFFSET(overscan_appropriate_flag), AV_OPT_TYPE_INT,
608 { .i64 = -1 }, -1, 1, FLAGS },
609
610 { "video_format", "Set video format (table E-2)",
611 OFFSET(video_format), AV_OPT_TYPE_INT,
612 { .i64 = -1 }, -1, 7, FLAGS},
613 { "video_full_range_flag", "Set video full range flag",
614 OFFSET(video_full_range_flag), AV_OPT_TYPE_INT,
615 { .i64 = -1 }, -1, 1, FLAGS },
616 { "colour_primaries", "Set colour primaries (table E-3)",
617 OFFSET(colour_primaries), AV_OPT_TYPE_INT,
618 { .i64 = -1 }, -1, 255, FLAGS },
619 { "transfer_characteristics", "Set transfer characteristics (table E-4)",
620 OFFSET(transfer_characteristics), AV_OPT_TYPE_INT,
621 { .i64 = -1 }, -1, 255, FLAGS },
622 { "matrix_coefficients", "Set matrix coefficients (table E-5)",
623 OFFSET(matrix_coefficients), AV_OPT_TYPE_INT,
624 { .i64 = -1 }, -1, 255, FLAGS },
625
626 { "chroma_sample_loc_type", "Set chroma sample location type (figure E-1)",
627 OFFSET(chroma_sample_loc_type), AV_OPT_TYPE_INT,
628 { .i64 = -1 }, -1, 5, FLAGS },
629
630 { "tick_rate", "Set VUI tick rate (time_scale / num_units_in_tick)",
631 OFFSET(tick_rate), AV_OPT_TYPE_RATIONAL,
632 { .dbl = 0.0 }, 0, UINT_MAX, FLAGS },
633 { "fixed_frame_rate_flag", "Set VUI fixed frame rate flag",
634 OFFSET(fixed_frame_rate_flag), AV_OPT_TYPE_INT,
635 { .i64 = -1 }, -1, 1, FLAGS },
636 { "zero_new_constraint_set_flags", "Set constraint_set4_flag / constraint_set5_flag to zero",
637 OFFSET(zero_new_constraint_set_flags), AV_OPT_TYPE_BOOL,
638 { .i64 = 0 }, 0, 1, FLAGS },
639
640 { "crop_left", "Set left border crop offset",
641 OFFSET(crop_left), AV_OPT_TYPE_INT,
642 { .i64 = -1 }, -1, H264_MAX_WIDTH, FLAGS },
643 { "crop_right", "Set right border crop offset",
644 OFFSET(crop_right), AV_OPT_TYPE_INT,
645 { .i64 = -1 }, -1, H264_MAX_WIDTH, FLAGS },
646 { "crop_top", "Set top border crop offset",
647 OFFSET(crop_top), AV_OPT_TYPE_INT,
648 { .i64 = -1 }, -1, H264_MAX_HEIGHT, FLAGS },
649 { "crop_bottom", "Set bottom border crop offset",
650 OFFSET(crop_bottom), AV_OPT_TYPE_INT,
651 { .i64 = -1 }, -1, H264_MAX_HEIGHT, FLAGS },
652
653 { "sei_user_data", "Insert SEI user data (UUID+string)",
654 OFFSET(sei_user_data), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = FLAGS },
655
656 { "delete_filler", "Delete all filler (both NAL and SEI)",
657 OFFSET(delete_filler), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS},
658
659 BSF_ELEMENT_OPTIONS_PIRE("display_orientation",
660 "Display orientation SEI",
661 display_orientation, FLAGS),
662
663 { "rotate", "Set rotation in display orientation SEI (anticlockwise angle in degrees)",
664 OFFSET(rotate), AV_OPT_TYPE_DOUBLE,
665 { .dbl = NAN }, -360.0, +360.0, FLAGS },
666 { "flip", "Set flip in display orientation SEI",
667 OFFSET(flip), AV_OPT_TYPE_FLAGS,
668 { .i64 = 0 }, 0, FLIP_HORIZONTAL | FLIP_VERTICAL, FLAGS, "flip" },
669 { "horizontal", "Set hor_flip",
670 0, AV_OPT_TYPE_CONST,
671 { .i64 = FLIP_HORIZONTAL }, .flags = FLAGS, .unit = "flip" },
672 { "vertical", "Set ver_flip",
673 0, AV_OPT_TYPE_CONST,
674 { .i64 = FLIP_VERTICAL }, .flags = FLAGS, .unit = "flip" },
675
676 { "level", "Set level (table A-1)",
677 OFFSET(level), AV_OPT_TYPE_INT,
678 { .i64 = LEVEL_UNSET }, LEVEL_UNSET, 0xff, FLAGS, "level" },
679 { "auto", "Attempt to guess level from stream properties",
680 0, AV_OPT_TYPE_CONST,
681 { .i64 = LEVEL_AUTO }, .flags = FLAGS, .unit = "level" },
682 #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
683 { .i64 = value }, .flags = FLAGS, .unit = "level"
684 { LEVEL("1", 10) },
685 { LEVEL("1b", 9) },
686 { LEVEL("1.1", 11) },
687 { LEVEL("1.2", 12) },
688 { LEVEL("1.3", 13) },
689 { LEVEL("2", 20) },
690 { LEVEL("2.1", 21) },
691 { LEVEL("2.2", 22) },
692 { LEVEL("3", 30) },
693 { LEVEL("3.1", 31) },
694 { LEVEL("3.2", 32) },
695 { LEVEL("4", 40) },
696 { LEVEL("4.1", 41) },
697 { LEVEL("4.2", 42) },
698 { LEVEL("5", 50) },
699 { LEVEL("5.1", 51) },
700 { LEVEL("5.2", 52) },
701 { LEVEL("6", 60) },
702 { LEVEL("6.1", 61) },
703 { LEVEL("6.2", 62) },
704 #undef LEVEL
705
706 { NULL }
707 };
708
709 static const AVClass h264_metadata_class = {
710 .class_name = "h264_metadata_bsf",
711 .item_name = av_default_item_name,
712 .option = h264_metadata_options,
713 .version = LIBAVUTIL_VERSION_INT,
714 };
715
716 static const enum AVCodecID h264_metadata_codec_ids[] = {
717 AV_CODEC_ID_H264, AV_CODEC_ID_NONE,
718 };
719
720 const FFBitStreamFilter ff_h264_metadata_bsf = {
721 .p.name = "h264_metadata",
722 .p.codec_ids = h264_metadata_codec_ids,
723 .p.priv_class = &h264_metadata_class,
724 .priv_data_size = sizeof(H264MetadataContext),
725 .init = &h264_metadata_init,
726 .close = &ff_cbs_bsf_generic_close,
727 .filter = &ff_cbs_bsf_generic_filter,
728 };
729