FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/bsf/h264_metadata.c
Date: 2024-02-29 09:57:37
Exec Total Coverage
Lines: 57 252 22.6%
Functions: 3 5 60.0%
Branches: 54 238 22.7%

Line Branch Exec Source
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 "cbs_sei.h"
30 #include "h264.h"
31 #include "h264_levels.h"
32 #include "h2645data.h"
33 #include "sei.h"
34
35 enum {
36 FLIP_HORIZONTAL = 1,
37 FLIP_VERTICAL = 2,
38 };
39
40 enum {
41 LEVEL_UNSET = -2,
42 LEVEL_AUTO = -1,
43 };
44
45 typedef struct H264MetadataContext {
46 CBSBSFContext common;
47
48 int done_first_au;
49
50 int aud;
51 H264RawAUD aud_nal;
52
53 AVRational sample_aspect_ratio;
54
55 int overscan_appropriate_flag;
56
57 int video_format;
58 int video_full_range_flag;
59 int colour_primaries;
60 int transfer_characteristics;
61 int matrix_coefficients;
62
63 int chroma_sample_loc_type;
64
65 AVRational tick_rate;
66 int fixed_frame_rate_flag;
67 int zero_new_constraint_set_flags;
68
69 int crop_left;
70 int crop_right;
71 int crop_top;
72 int crop_bottom;
73
74 const char *sei_user_data;
75 SEIRawUserDataUnregistered sei_user_data_payload;
76
77 int delete_filler;
78
79 int display_orientation;
80 double rotate;
81 int flip;
82 H264RawSEIDisplayOrientation display_orientation_payload;
83
84 int level;
85 } H264MetadataContext;
86
87
88 static int h264_metadata_insert_aud(AVBSFContext *bsf,
89 CodedBitstreamFragment *au)
90 {
91 H264MetadataContext *ctx = bsf->priv_data;
92 int primary_pic_type_mask = 0xff;
93 int err, i, j;
94
95 static const int primary_pic_type_table[] = {
96 0x084, // 2, 7
97 0x0a5, // 0, 2, 5, 7
98 0x0e7, // 0, 1, 2, 5, 6, 7
99 0x210, // 4, 9
100 0x318, // 3, 4, 8, 9
101 0x294, // 2, 4, 7, 9
102 0x3bd, // 0, 2, 3, 4, 5, 7, 8, 9
103 0x3ff, // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
104 };
105
106 for (i = 0; i < au->nb_units; i++) {
107 if (au->units[i].type == H264_NAL_SLICE ||
108 au->units[i].type == H264_NAL_IDR_SLICE) {
109 H264RawSlice *slice = au->units[i].content;
110 for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++) {
111 if (!(primary_pic_type_table[j] &
112 (1 << slice->header.slice_type)))
113 primary_pic_type_mask &= ~(1 << j);
114 }
115 }
116 }
117 for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++)
118 if (primary_pic_type_mask & (1 << j))
119 break;
120 if (j >= FF_ARRAY_ELEMS(primary_pic_type_table)) {
121 av_log(bsf, AV_LOG_ERROR, "No usable primary_pic_type: "
122 "invalid slice types?\n");
123 return AVERROR_INVALIDDATA;
124 }
125
126 ctx->aud_nal = (H264RawAUD) {
127 .nal_unit_header.nal_unit_type = H264_NAL_AUD,
128 .primary_pic_type = j,
129 };
130
131 err = ff_cbs_insert_unit_content(au, 0, H264_NAL_AUD,
132 &ctx->aud_nal, NULL);
133 if (err < 0) {
134 av_log(bsf, AV_LOG_ERROR, "Failed to insert AUD.\n");
135 return err;
136 }
137
138 return 0;
139 }
140
141 42 static int h264_metadata_update_sps(AVBSFContext *bsf,
142 H264RawSPS *sps)
143 {
144 42 H264MetadataContext *ctx = bsf->priv_data;
145 42 int need_vui = 0;
146 int crop_unit_x, crop_unit_y;
147
148
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42 if (ctx->sample_aspect_ratio.num && ctx->sample_aspect_ratio.den) {
149 int num, den, i;
150
151 av_reduce(&num, &den, ctx->sample_aspect_ratio.num,
152 ctx->sample_aspect_ratio.den, 65535);
153
154 for (i = 1; i < FF_ARRAY_ELEMS(ff_h2645_pixel_aspect); i++) {
155 if (num == ff_h2645_pixel_aspect[i].num &&
156 den == ff_h2645_pixel_aspect[i].den)
157 break;
158 }
159 if (i == FF_ARRAY_ELEMS(ff_h2645_pixel_aspect)) {
160 sps->vui.aspect_ratio_idc = 255;
161 sps->vui.sar_width = num;
162 sps->vui.sar_height = den;
163 } else {
164 sps->vui.aspect_ratio_idc = i;
165 }
166 sps->vui.aspect_ratio_info_present_flag = 1;
167 need_vui = 1;
168 }
169
170 #define SET_VUI_FIELD(field) do { \
171 if (ctx->field >= 0) { \
172 sps->vui.field = ctx->field; \
173 need_vui = 1; \
174 } \
175 } while (0)
176
177
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42 if (ctx->overscan_appropriate_flag >= 0) {
178 SET_VUI_FIELD(overscan_appropriate_flag);
179 sps->vui.overscan_info_present_flag = 1;
180 }
181
182
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42 if (ctx->video_format >= 0 ||
183
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42 ctx->video_full_range_flag >= 0 ||
184
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42 ctx->colour_primaries >= 0 ||
185
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42 ctx->transfer_characteristics >= 0 ||
186
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42 ctx->matrix_coefficients >= 0) {
187
188 SET_VUI_FIELD(video_format);
189
190 SET_VUI_FIELD(video_full_range_flag);
191
192 if (ctx->colour_primaries >= 0 ||
193 ctx->transfer_characteristics >= 0 ||
194 ctx->matrix_coefficients >= 0) {
195
196 SET_VUI_FIELD(colour_primaries);
197 SET_VUI_FIELD(transfer_characteristics);
198 SET_VUI_FIELD(matrix_coefficients);
199
200 sps->vui.colour_description_present_flag = 1;
201 }
202 sps->vui.video_signal_type_present_flag = 1;
203 }
204
205
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42 if (ctx->chroma_sample_loc_type >= 0) {
206 sps->vui.chroma_sample_loc_type_top_field =
207 ctx->chroma_sample_loc_type;
208 sps->vui.chroma_sample_loc_type_bottom_field =
209 ctx->chroma_sample_loc_type;
210 sps->vui.chroma_loc_info_present_flag = 1;
211 need_vui = 1;
212 }
213
214
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42 if (ctx->tick_rate.num && ctx->tick_rate.den) {
215 int num, den;
216
217 av_reduce(&num, &den, ctx->tick_rate.num, ctx->tick_rate.den,
218 UINT32_MAX > INT_MAX ? UINT32_MAX : INT_MAX);
219
220 sps->vui.time_scale = num;
221 sps->vui.num_units_in_tick = den;
222
223 sps->vui.timing_info_present_flag = 1;
224 need_vui = 1;
225 }
226
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42 SET_VUI_FIELD(fixed_frame_rate_flag);
227
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42 if (ctx->zero_new_constraint_set_flags) {
228 sps->constraint_set4_flag = 0;
229 sps->constraint_set5_flag = 0;
230 }
231
232
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42 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
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42 crop_unit_x = 1 + (sps->chroma_format_idc < 3);
237
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42 crop_unit_y = (1 + (sps->chroma_format_idc < 2)) *
238 42 (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
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42 CROP(left, crop_unit_x);
253
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42 CROP(right, crop_unit_x);
254
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42 CROP(top, crop_unit_y);
255
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42 CROP(bottom, crop_unit_y);
256 #undef CROP
257
258
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42 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,
293 width, height, dpb_frames);
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
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42 if (need_vui)
320 sps->vui_parameters_present_flag = 1;
321
322 42 return 0;
323 }
324
325 static int h264_metadata_handle_display_orientation(AVBSFContext *bsf,
326 AVPacket *pkt,
327 CodedBitstreamFragment *au,
328 int seek_point)
329 {
330 H264MetadataContext *ctx = bsf->priv_data;
331 SEIRawMessage *message;
332 int err;
333
334 message = NULL;
335 while (ff_cbs_sei_find_message(ctx->common.output, au,
336 SEI_TYPE_DISPLAY_ORIENTATION,
337 &message) == 0) {
338 H264RawSEIDisplayOrientation *disp = message->payload;
339 double angle = disp->anticlockwise_rotation * 180.0 / 65536.0;
340 int32_t *matrix;
341
342 matrix = av_malloc(9 * sizeof(int32_t));
343 if (!matrix)
344 return AVERROR(ENOMEM);
345
346 /* av_display_rotation_set() expects the angle in the clockwise
347 * direction, hence the first minus.
348 * The below code applies the flips after the rotation, yet
349 * the H.2645 specs require flipping to be applied first.
350 * Because of R O(phi) = O(-phi) R (where R is flipping around
351 * an arbitatry axis and O(phi) is the proper rotation by phi)
352 * we can create display matrices as desired by negating
353 * the degree once for every flip applied. */
354 angle = -angle * (1 - 2 * !!disp->hor_flip) * (1 - 2 * !!disp->ver_flip);
355
356 av_display_rotation_set(matrix, angle);
357 av_display_matrix_flip(matrix, disp->hor_flip, disp->ver_flip);
358
359 // If there are multiple display orientation messages in an
360 // access unit, then the last one added to the packet (i.e.
361 // the first one in the access unit) will prevail.
362 err = av_packet_add_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX,
363 (uint8_t*)matrix,
364 9 * sizeof(int32_t));
365 if (err < 0) {
366 av_log(bsf, AV_LOG_ERROR, "Failed to attach extracted "
367 "displaymatrix side data to packet.\n");
368 av_free(matrix);
369 return AVERROR(ENOMEM);
370 }
371 }
372
373 if (ctx->display_orientation == BSF_ELEMENT_REMOVE ||
374 ctx->display_orientation == BSF_ELEMENT_INSERT) {
375 ff_cbs_sei_delete_message_type(ctx->common.output, au,
376 SEI_TYPE_DISPLAY_ORIENTATION);
377 }
378
379 if (ctx->display_orientation == BSF_ELEMENT_INSERT) {
380 H264RawSEIDisplayOrientation *disp =
381 &ctx->display_orientation_payload;
382 uint8_t *data;
383 size_t size;
384 int write = 0;
385
386 data = av_packet_get_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX, &size);
387 if (data && size >= 9 * sizeof(int32_t)) {
388 int32_t matrix[9];
389 double dmatrix[9];
390 int hflip, vflip, i;
391 double scale_x, scale_y, angle;
392
393 memcpy(matrix, data, sizeof(matrix));
394
395 for (i = 0; i < 9; i++)
396 dmatrix[i] = matrix[i] / 65536.0;
397
398 // Extract scale factors.
399 scale_x = hypot(dmatrix[0], dmatrix[3]);
400 scale_y = hypot(dmatrix[1], dmatrix[4]);
401
402 // Select flips to make the main diagonal positive.
403 hflip = dmatrix[0] < 0.0;
404 vflip = dmatrix[4] < 0.0;
405 if (hflip)
406 scale_x = -scale_x;
407 if (vflip)
408 scale_y = -scale_y;
409
410 // Rescale.
411 for (i = 0; i < 9; i += 3) {
412 dmatrix[i] /= scale_x;
413 dmatrix[i + 1] /= scale_y;
414 }
415
416 // Extract rotation.
417 angle = atan2(dmatrix[3], dmatrix[0]);
418
419 if (!(angle >= -M_PI && angle <= M_PI) ||
420 matrix[2] != 0.0 || matrix[5] != 0.0 ||
421 matrix[6] != 0.0 || matrix[7] != 0.0) {
422 av_log(bsf, AV_LOG_WARNING, "Input display matrix is not "
423 "representable in H.264 parameters.\n");
424 } else {
425 disp->hor_flip = hflip;
426 disp->ver_flip = vflip;
427 disp->anticlockwise_rotation =
428 (uint16_t)rint((angle >= 0.0 ? angle
429 : angle + 2 * M_PI) *
430 32768.0 / M_PI);
431 write = 1;
432 }
433 }
434
435 if (seek_point) {
436 if (!isnan(ctx->rotate)) {
437 disp->anticlockwise_rotation =
438 (uint16_t)rint((ctx->rotate >= 0.0 ? ctx->rotate
439 : ctx->rotate + 360.0) *
440 65536.0 / 360.0);
441 write = 1;
442 }
443 if (ctx->flip) {
444 disp->hor_flip = !!(ctx->flip & FLIP_HORIZONTAL);
445 disp->ver_flip = !!(ctx->flip & FLIP_VERTICAL);
446 write = 1;
447 }
448 }
449
450 if (write) {
451 disp->display_orientation_repetition_period = 1;
452
453 err = ff_cbs_sei_add_message(ctx->common.output, au, 1,
454 SEI_TYPE_DISPLAY_ORIENTATION,
455 disp, NULL);
456 if (err < 0) {
457 av_log(bsf, AV_LOG_ERROR, "Failed to add display orientation "
458 "SEI message to access unit.\n");
459 return err;
460 }
461 }
462 }
463
464 return 0;
465 }
466
467 2390 static int h264_metadata_update_fragment(AVBSFContext *bsf, AVPacket *pkt,
468 CodedBitstreamFragment *au)
469 {
470 2390 H264MetadataContext *ctx = bsf->priv_data;
471 int err, i, has_sps, seek_point;
472
473
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2390 if (ctx->aud == BSF_ELEMENT_REMOVE) {
474
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216 for (i = au->nb_units - 1; i >= 0; i--) {
475
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176 if (au->units[i].type == H264_NAL_AUD)
476 39 ff_cbs_delete_unit(au, i);
477 }
478
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2350 } else if (ctx->aud == BSF_ELEMENT_INSERT) {
479 if (pkt) {
480 err = h264_metadata_insert_aud(bsf, au);
481 if (err < 0)
482 return err;
483 }
484 }
485
486 2390 has_sps = 0;
487
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9143 for (i = 0; i < au->nb_units; i++) {
488
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6753 if (au->units[i].type == H264_NAL_SPS) {
489 42 err = h264_metadata_update_sps(bsf, au->units[i].content);
490
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42 if (err < 0)
491 return err;
492 42 has_sps = 1;
493 }
494 }
495
496
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2390 if (pkt) {
497 // The current packet should be treated as a seek point for metadata
498 // insertion if any of:
499 // - It is the first packet in the stream.
500 // - It contains an SPS, indicating that a sequence might start here.
501 // - It is marked as containing a key frame.
502
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4722 seek_point = !ctx->done_first_au || has_sps ||
503
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2348 (pkt->flags & AV_PKT_FLAG_KEY);
504 } else {
505 16 seek_point = 0;
506 }
507
508
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2390 if (ctx->sei_user_data && seek_point) {
509 err = ff_cbs_sei_add_message(ctx->common.output, au, 1,
510 SEI_TYPE_USER_DATA_UNREGISTERED,
511 &ctx->sei_user_data_payload, NULL);
512 if (err < 0) {
513 av_log(bsf, AV_LOG_ERROR, "Failed to add user data SEI "
514 "message to access unit.\n");
515 return err;
516 }
517 }
518
519
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2390 if (ctx->delete_filler) {
520
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177 for (i = au->nb_units - 1; i >= 0; i--) {
521
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137 if (au->units[i].type == H264_NAL_FILLER_DATA) {
522 33 ff_cbs_delete_unit(au, i);
523 33 continue;
524 }
525 }
526
527 40 ff_cbs_sei_delete_message_type(ctx->common.output, au,
528 SEI_TYPE_FILLER_PAYLOAD);
529 }
530
531
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2390 if (pkt && ctx->display_orientation != BSF_ELEMENT_PASS) {
532 err = h264_metadata_handle_display_orientation(bsf, pkt, au,
533 seek_point);
534 if (err < 0)
535 return err;
536 }
537
538
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2390 if (pkt)
539 2374 ctx->done_first_au = 1;
540
541 2390 return 0;
542 }
543
544 static const CBSBSFType h264_metadata_type = {
545 .codec_id = AV_CODEC_ID_H264,
546 .fragment_name = "access unit",
547 .unit_name = "NAL unit",
548 .update_fragment = &h264_metadata_update_fragment,
549 };
550
551 16 static int h264_metadata_init(AVBSFContext *bsf)
552 {
553 16 H264MetadataContext *ctx = bsf->priv_data;
554
555
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16 if (ctx->sei_user_data) {
556 SEIRawUserDataUnregistered *udu = &ctx->sei_user_data_payload;
557 int i, j;
558
559 // Parse UUID. It must be a hex string of length 32, possibly
560 // containing '-'s between hex digits (which we ignore).
561 for (i = j = 0; j < 32 && i < 64 && ctx->sei_user_data[i]; i++) {
562 int c, v;
563 c = ctx->sei_user_data[i];
564 if (c == '-') {
565 continue;
566 } else if (av_isxdigit(c)) {
567 c = av_tolower(c);
568 v = (c <= '9' ? c - '0' : c - 'a' + 10);
569 } else {
570 break;
571 }
572 if (j & 1)
573 udu->uuid_iso_iec_11578[j / 2] |= v;
574 else
575 udu->uuid_iso_iec_11578[j / 2] = v << 4;
576 ++j;
577 }
578 if (j == 32 && ctx->sei_user_data[i] == '+') {
579 udu->data = (uint8_t*)ctx->sei_user_data + i + 1;
580 udu->data_length = strlen(udu->data) + 1;
581 } else {
582 av_log(bsf, AV_LOG_ERROR, "Invalid user data: "
583 "must be \"UUID+string\".\n");
584 return AVERROR(EINVAL);
585 }
586 }
587
588 16 return ff_cbs_bsf_generic_init(bsf, &h264_metadata_type);
589 }
590
591 #define OFFSET(x) offsetof(H264MetadataContext, x)
592 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM)
593 static const AVOption h264_metadata_options[] = {
594 BSF_ELEMENT_OPTIONS_PIR("aud", "Access Unit Delimiter NAL units",
595 aud, FLAGS),
596
597 { "sample_aspect_ratio", "Set sample aspect ratio (table E-1)",
598 OFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL,
599 { .dbl = 0.0 }, 0, 65535, FLAGS },
600
601 { "overscan_appropriate_flag", "Set VUI overscan appropriate flag",
602 OFFSET(overscan_appropriate_flag), AV_OPT_TYPE_INT,
603 { .i64 = -1 }, -1, 1, FLAGS },
604
605 { "video_format", "Set video format (table E-2)",
606 OFFSET(video_format), AV_OPT_TYPE_INT,
607 { .i64 = -1 }, -1, 7, FLAGS},
608 { "video_full_range_flag", "Set video full range flag",
609 OFFSET(video_full_range_flag), AV_OPT_TYPE_INT,
610 { .i64 = -1 }, -1, 1, FLAGS },
611 { "colour_primaries", "Set colour primaries (table E-3)",
612 OFFSET(colour_primaries), AV_OPT_TYPE_INT,
613 { .i64 = -1 }, -1, 255, FLAGS },
614 { "transfer_characteristics", "Set transfer characteristics (table E-4)",
615 OFFSET(transfer_characteristics), AV_OPT_TYPE_INT,
616 { .i64 = -1 }, -1, 255, FLAGS },
617 { "matrix_coefficients", "Set matrix coefficients (table E-5)",
618 OFFSET(matrix_coefficients), AV_OPT_TYPE_INT,
619 { .i64 = -1 }, -1, 255, FLAGS },
620
621 { "chroma_sample_loc_type", "Set chroma sample location type (figure E-1)",
622 OFFSET(chroma_sample_loc_type), AV_OPT_TYPE_INT,
623 { .i64 = -1 }, -1, 5, FLAGS },
624
625 { "tick_rate", "Set VUI tick rate (time_scale / num_units_in_tick)",
626 OFFSET(tick_rate), AV_OPT_TYPE_RATIONAL,
627 { .dbl = 0.0 }, 0, UINT_MAX, FLAGS },
628 { "fixed_frame_rate_flag", "Set VUI fixed frame rate flag",
629 OFFSET(fixed_frame_rate_flag), AV_OPT_TYPE_INT,
630 { .i64 = -1 }, -1, 1, FLAGS },
631 { "zero_new_constraint_set_flags", "Set constraint_set4_flag / constraint_set5_flag to zero",
632 OFFSET(zero_new_constraint_set_flags), AV_OPT_TYPE_BOOL,
633 { .i64 = 0 }, 0, 1, FLAGS },
634
635 { "crop_left", "Set left border crop offset",
636 OFFSET(crop_left), AV_OPT_TYPE_INT,
637 { .i64 = -1 }, -1, H264_MAX_WIDTH, FLAGS },
638 { "crop_right", "Set right border crop offset",
639 OFFSET(crop_right), AV_OPT_TYPE_INT,
640 { .i64 = -1 }, -1, H264_MAX_WIDTH, FLAGS },
641 { "crop_top", "Set top border crop offset",
642 OFFSET(crop_top), AV_OPT_TYPE_INT,
643 { .i64 = -1 }, -1, H264_MAX_HEIGHT, FLAGS },
644 { "crop_bottom", "Set bottom border crop offset",
645 OFFSET(crop_bottom), AV_OPT_TYPE_INT,
646 { .i64 = -1 }, -1, H264_MAX_HEIGHT, FLAGS },
647
648 { "sei_user_data", "Insert SEI user data (UUID+string)",
649 OFFSET(sei_user_data), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = FLAGS },
650
651 { "delete_filler", "Delete all filler (both NAL and SEI)",
652 OFFSET(delete_filler), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS},
653
654 BSF_ELEMENT_OPTIONS_PIRE("display_orientation",
655 "Display orientation SEI",
656 display_orientation, FLAGS),
657
658 { "rotate", "Set rotation in display orientation SEI (anticlockwise angle in degrees)",
659 OFFSET(rotate), AV_OPT_TYPE_DOUBLE,
660 { .dbl = NAN }, -360.0, +360.0, FLAGS },
661 { "flip", "Set flip in display orientation SEI",
662 OFFSET(flip), AV_OPT_TYPE_FLAGS,
663 { .i64 = 0 }, 0, FLIP_HORIZONTAL | FLIP_VERTICAL, FLAGS, .unit = "flip" },
664 { "horizontal", "Set hor_flip",
665 0, AV_OPT_TYPE_CONST,
666 { .i64 = FLIP_HORIZONTAL }, .flags = FLAGS, .unit = "flip" },
667 { "vertical", "Set ver_flip",
668 0, AV_OPT_TYPE_CONST,
669 { .i64 = FLIP_VERTICAL }, .flags = FLAGS, .unit = "flip" },
670
671 { "level", "Set level (table A-1)",
672 OFFSET(level), AV_OPT_TYPE_INT,
673 { .i64 = LEVEL_UNSET }, LEVEL_UNSET, 0xff, FLAGS, .unit = "level" },
674 { "auto", "Attempt to guess level from stream properties",
675 0, AV_OPT_TYPE_CONST,
676 { .i64 = LEVEL_AUTO }, .flags = FLAGS, .unit = "level" },
677 #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
678 { .i64 = value }, .flags = FLAGS, .unit = "level"
679 { LEVEL("1", 10) },
680 { LEVEL("1b", 9) },
681 { LEVEL("1.1", 11) },
682 { LEVEL("1.2", 12) },
683 { LEVEL("1.3", 13) },
684 { LEVEL("2", 20) },
685 { LEVEL("2.1", 21) },
686 { LEVEL("2.2", 22) },
687 { LEVEL("3", 30) },
688 { LEVEL("3.1", 31) },
689 { LEVEL("3.2", 32) },
690 { LEVEL("4", 40) },
691 { LEVEL("4.1", 41) },
692 { LEVEL("4.2", 42) },
693 { LEVEL("5", 50) },
694 { LEVEL("5.1", 51) },
695 { LEVEL("5.2", 52) },
696 { LEVEL("6", 60) },
697 { LEVEL("6.1", 61) },
698 { LEVEL("6.2", 62) },
699 #undef LEVEL
700
701 { NULL }
702 };
703
704 static const AVClass h264_metadata_class = {
705 .class_name = "h264_metadata_bsf",
706 .item_name = av_default_item_name,
707 .option = h264_metadata_options,
708 .version = LIBAVUTIL_VERSION_INT,
709 };
710
711 static const enum AVCodecID h264_metadata_codec_ids[] = {
712 AV_CODEC_ID_H264, AV_CODEC_ID_NONE,
713 };
714
715 const FFBitStreamFilter ff_h264_metadata_bsf = {
716 .p.name = "h264_metadata",
717 .p.codec_ids = h264_metadata_codec_ids,
718 .p.priv_class = &h264_metadata_class,
719 .priv_data_size = sizeof(H264MetadataContext),
720 .init = &h264_metadata_init,
721 .close = &ff_cbs_bsf_generic_close,
722 .filter = &ff_cbs_bsf_generic_filter,
723 };
724