FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/bsf/h264_metadata.c
Date: 2024-06-18 16:06:53
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/mem.h"
23 #include "libavutil/opt.h"
24
25 #include "bsf.h"
26 #include "bsf_internal.h"
27 #include "cbs.h"
28 #include "cbs_bsf.h"
29 #include "cbs_h264.h"
30 #include "cbs_sei.h"
31 #include "h264.h"
32 #include "h264_levels.h"
33 #include "h2645data.h"
34 #include "sei.h"
35
36 enum {
37 FLIP_HORIZONTAL = 1,
38 FLIP_VERTICAL = 2,
39 };
40
41 enum {
42 LEVEL_UNSET = -2,
43 LEVEL_AUTO = -1,
44 };
45
46 typedef struct H264MetadataContext {
47 CBSBSFContext common;
48
49 int done_first_au;
50
51 int aud;
52 H264RawAUD aud_nal;
53
54 AVRational sample_aspect_ratio;
55
56 int overscan_appropriate_flag;
57
58 int video_format;
59 int video_full_range_flag;
60 int colour_primaries;
61 int transfer_characteristics;
62 int matrix_coefficients;
63
64 int chroma_sample_loc_type;
65
66 AVRational tick_rate;
67 int fixed_frame_rate_flag;
68 int zero_new_constraint_set_flags;
69
70 int crop_left;
71 int crop_right;
72 int crop_top;
73 int crop_bottom;
74
75 const char *sei_user_data;
76 SEIRawUserDataUnregistered sei_user_data_payload;
77
78 int delete_filler;
79
80 int display_orientation;
81 double rotate;
82 int flip;
83 H264RawSEIDisplayOrientation display_orientation_payload;
84
85 int level;
86 } H264MetadataContext;
87
88
89 static int h264_metadata_insert_aud(AVBSFContext *bsf,
90 CodedBitstreamFragment *au)
91 {
92 H264MetadataContext *ctx = bsf->priv_data;
93 int primary_pic_type_mask = 0xff;
94 int err, i, j;
95
96 static const int primary_pic_type_table[] = {
97 0x084, // 2, 7
98 0x0a5, // 0, 2, 5, 7
99 0x0e7, // 0, 1, 2, 5, 6, 7
100 0x210, // 4, 9
101 0x318, // 3, 4, 8, 9
102 0x294, // 2, 4, 7, 9
103 0x3bd, // 0, 2, 3, 4, 5, 7, 8, 9
104 0x3ff, // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
105 };
106
107 for (i = 0; i < au->nb_units; i++) {
108 if (au->units[i].type == H264_NAL_SLICE ||
109 au->units[i].type == H264_NAL_IDR_SLICE) {
110 H264RawSlice *slice = au->units[i].content;
111 for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++) {
112 if (!(primary_pic_type_table[j] &
113 (1 << slice->header.slice_type)))
114 primary_pic_type_mask &= ~(1 << j);
115 }
116 }
117 }
118 for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++)
119 if (primary_pic_type_mask & (1 << j))
120 break;
121 if (j >= FF_ARRAY_ELEMS(primary_pic_type_table)) {
122 av_log(bsf, AV_LOG_ERROR, "No usable primary_pic_type: "
123 "invalid slice types?\n");
124 return AVERROR_INVALIDDATA;
125 }
126
127 ctx->aud_nal = (H264RawAUD) {
128 .nal_unit_header.nal_unit_type = H264_NAL_AUD,
129 .primary_pic_type = j,
130 };
131
132 err = ff_cbs_insert_unit_content(au, 0, H264_NAL_AUD,
133 &ctx->aud_nal, NULL);
134 if (err < 0) {
135 av_log(bsf, AV_LOG_ERROR, "Failed to insert AUD.\n");
136 return err;
137 }
138
139 return 0;
140 }
141
142 42 static int h264_metadata_update_sps(AVBSFContext *bsf,
143 H264RawSPS *sps)
144 {
145 42 H264MetadataContext *ctx = bsf->priv_data;
146 42 int need_vui = 0;
147 int crop_unit_x, crop_unit_y;
148
149
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42 if (ctx->sample_aspect_ratio.num && ctx->sample_aspect_ratio.den) {
150 int num, den, i;
151
152 av_reduce(&num, &den, ctx->sample_aspect_ratio.num,
153 ctx->sample_aspect_ratio.den, 65535);
154
155 for (i = 1; i < FF_ARRAY_ELEMS(ff_h2645_pixel_aspect); i++) {
156 if (num == ff_h2645_pixel_aspect[i].num &&
157 den == ff_h2645_pixel_aspect[i].den)
158 break;
159 }
160 if (i == FF_ARRAY_ELEMS(ff_h2645_pixel_aspect)) {
161 sps->vui.aspect_ratio_idc = 255;
162 sps->vui.sar_width = num;
163 sps->vui.sar_height = den;
164 } else {
165 sps->vui.aspect_ratio_idc = i;
166 }
167 sps->vui.aspect_ratio_info_present_flag = 1;
168 need_vui = 1;
169 }
170
171 #define SET_VUI_FIELD(field) do { \
172 if (ctx->field >= 0) { \
173 sps->vui.field = ctx->field; \
174 need_vui = 1; \
175 } \
176 } while (0)
177
178
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42 if (ctx->overscan_appropriate_flag >= 0) {
179 SET_VUI_FIELD(overscan_appropriate_flag);
180 sps->vui.overscan_info_present_flag = 1;
181 }
182
183
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42 if (ctx->video_format >= 0 ||
184
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42 ctx->video_full_range_flag >= 0 ||
185
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42 ctx->colour_primaries >= 0 ||
186
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42 ctx->transfer_characteristics >= 0 ||
187
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42 ctx->matrix_coefficients >= 0) {
188
189 SET_VUI_FIELD(video_format);
190
191 SET_VUI_FIELD(video_full_range_flag);
192
193 if (ctx->colour_primaries >= 0 ||
194 ctx->transfer_characteristics >= 0 ||
195 ctx->matrix_coefficients >= 0) {
196
197 SET_VUI_FIELD(colour_primaries);
198 SET_VUI_FIELD(transfer_characteristics);
199 SET_VUI_FIELD(matrix_coefficients);
200
201 sps->vui.colour_description_present_flag = 1;
202 }
203 sps->vui.video_signal_type_present_flag = 1;
204 }
205
206
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42 if (ctx->chroma_sample_loc_type >= 0) {
207 sps->vui.chroma_sample_loc_type_top_field =
208 ctx->chroma_sample_loc_type;
209 sps->vui.chroma_sample_loc_type_bottom_field =
210 ctx->chroma_sample_loc_type;
211 sps->vui.chroma_loc_info_present_flag = 1;
212 need_vui = 1;
213 }
214
215
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42 if (ctx->tick_rate.num && ctx->tick_rate.den) {
216 int num, den;
217
218 av_reduce(&num, &den, ctx->tick_rate.num, ctx->tick_rate.den,
219 UINT32_MAX > INT_MAX ? UINT32_MAX : INT_MAX);
220
221 sps->vui.time_scale = num;
222 sps->vui.num_units_in_tick = den;
223
224 sps->vui.timing_info_present_flag = 1;
225 need_vui = 1;
226 }
227
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42 SET_VUI_FIELD(fixed_frame_rate_flag);
228
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42 if (ctx->zero_new_constraint_set_flags) {
229 sps->constraint_set4_flag = 0;
230 sps->constraint_set5_flag = 0;
231 }
232
233
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42 if (sps->separate_colour_plane_flag || sps->chroma_format_idc == 0) {
234 crop_unit_x = 1;
235 crop_unit_y = 2 - sps->frame_mbs_only_flag;
236 } else {
237
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42 crop_unit_x = 1 + (sps->chroma_format_idc < 3);
238
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42 crop_unit_y = (1 + (sps->chroma_format_idc < 2)) *
239 42 (2 - sps->frame_mbs_only_flag);
240 }
241 #define CROP(border, unit) do { \
242 if (ctx->crop_ ## border >= 0) { \
243 if (ctx->crop_ ## border % unit != 0) { \
244 av_log(bsf, AV_LOG_ERROR, "Invalid value for crop_%s: " \
245 "must be a multiple of %d.\n", #border, unit); \
246 return AVERROR(EINVAL); \
247 } \
248 sps->frame_crop_ ## border ## _offset = \
249 ctx->crop_ ## border / unit; \
250 sps->frame_cropping_flag = 1; \
251 } \
252 } while (0)
253
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42 CROP(left, crop_unit_x);
254
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42 CROP(right, crop_unit_x);
255
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42 CROP(top, crop_unit_y);
256
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42 CROP(bottom, crop_unit_y);
257 #undef CROP
258
259
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42 if (ctx->level != LEVEL_UNSET) {
260 int level_idc;
261
262 if (ctx->level == LEVEL_AUTO) {
263 const H264LevelDescriptor *desc;
264 int64_t bit_rate;
265 int width, height, dpb_frames;
266 int framerate;
267
268 if (sps->vui.nal_hrd_parameters_present_flag) {
269 bit_rate = (sps->vui.nal_hrd_parameters.bit_rate_value_minus1[0] + 1) *
270 (INT64_C(1) << (sps->vui.nal_hrd_parameters.bit_rate_scale + 6));
271 } else if (sps->vui.vcl_hrd_parameters_present_flag) {
272 bit_rate = (sps->vui.vcl_hrd_parameters.bit_rate_value_minus1[0] + 1) *
273 (INT64_C(1) << (sps->vui.vcl_hrd_parameters.bit_rate_scale + 6));
274 // Adjust for VCL vs. NAL limits.
275 bit_rate = bit_rate * 6 / 5;
276 } else {
277 bit_rate = 0;
278 }
279
280 // Don't use max_dec_frame_buffering if it is only inferred.
281 dpb_frames = sps->vui.bitstream_restriction_flag ?
282 sps->vui.max_dec_frame_buffering : H264_MAX_DPB_FRAMES;
283
284 width = 16 * (sps->pic_width_in_mbs_minus1 + 1);
285 height = 16 * (sps->pic_height_in_map_units_minus1 + 1) *
286 (2 - sps->frame_mbs_only_flag);
287
288 if (sps->vui.timing_info_present_flag)
289 framerate = sps->vui.time_scale / sps->vui.num_units_in_tick / 2;
290 else
291 framerate = 0;
292
293 desc = ff_h264_guess_level(sps->profile_idc, bit_rate, framerate,
294 width, height, dpb_frames);
295 if (desc) {
296 level_idc = desc->level_idc;
297 } else {
298 av_log(bsf, AV_LOG_WARNING, "Stream does not appear to "
299 "conform to any level: using level 6.2.\n");
300 level_idc = 62;
301 }
302 } else {
303 level_idc = ctx->level;
304 }
305
306 if (level_idc == 9) {
307 if (sps->profile_idc == 66 ||
308 sps->profile_idc == 77 ||
309 sps->profile_idc == 88) {
310 sps->level_idc = 11;
311 sps->constraint_set3_flag = 1;
312 } else {
313 sps->level_idc = 9;
314 }
315 } else {
316 sps->level_idc = level_idc;
317 }
318 }
319
320
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42 if (need_vui)
321 sps->vui_parameters_present_flag = 1;
322
323 42 return 0;
324 }
325
326 static int h264_metadata_handle_display_orientation(AVBSFContext *bsf,
327 AVPacket *pkt,
328 CodedBitstreamFragment *au,
329 int seek_point)
330 {
331 H264MetadataContext *ctx = bsf->priv_data;
332 SEIRawMessage *message;
333 int err;
334
335 message = NULL;
336 while (ff_cbs_sei_find_message(ctx->common.output, au,
337 SEI_TYPE_DISPLAY_ORIENTATION,
338 &message) == 0) {
339 H264RawSEIDisplayOrientation *disp = message->payload;
340 double angle = disp->anticlockwise_rotation * 180.0 / 65536.0;
341 int32_t *matrix;
342
343 matrix = av_malloc(9 * sizeof(int32_t));
344 if (!matrix)
345 return AVERROR(ENOMEM);
346
347 /* av_display_rotation_set() expects the angle in the clockwise
348 * direction, hence the first minus.
349 * The below code applies the flips after the rotation, yet
350 * the H.2645 specs require flipping to be applied first.
351 * Because of R O(phi) = O(-phi) R (where R is flipping around
352 * an arbitatry axis and O(phi) is the proper rotation by phi)
353 * we can create display matrices as desired by negating
354 * the degree once for every flip applied. */
355 angle = -angle * (1 - 2 * !!disp->hor_flip) * (1 - 2 * !!disp->ver_flip);
356
357 av_display_rotation_set(matrix, angle);
358 av_display_matrix_flip(matrix, disp->hor_flip, disp->ver_flip);
359
360 // If there are multiple display orientation messages in an
361 // access unit, then the last one added to the packet (i.e.
362 // the first one in the access unit) will prevail.
363 err = av_packet_add_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX,
364 (uint8_t*)matrix,
365 9 * sizeof(int32_t));
366 if (err < 0) {
367 av_log(bsf, AV_LOG_ERROR, "Failed to attach extracted "
368 "displaymatrix side data to packet.\n");
369 av_free(matrix);
370 return AVERROR(ENOMEM);
371 }
372 }
373
374 if (ctx->display_orientation == BSF_ELEMENT_REMOVE ||
375 ctx->display_orientation == BSF_ELEMENT_INSERT) {
376 ff_cbs_sei_delete_message_type(ctx->common.output, au,
377 SEI_TYPE_DISPLAY_ORIENTATION);
378 }
379
380 if (ctx->display_orientation == BSF_ELEMENT_INSERT) {
381 H264RawSEIDisplayOrientation *disp =
382 &ctx->display_orientation_payload;
383 uint8_t *data;
384 size_t size;
385 int write = 0;
386
387 data = av_packet_get_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX, &size);
388 if (data && size >= 9 * sizeof(int32_t)) {
389 int32_t matrix[9];
390 double dmatrix[9];
391 int hflip, vflip, i;
392 double scale_x, scale_y, angle;
393
394 memcpy(matrix, data, sizeof(matrix));
395
396 for (i = 0; i < 9; i++)
397 dmatrix[i] = matrix[i] / 65536.0;
398
399 // Extract scale factors.
400 scale_x = hypot(dmatrix[0], dmatrix[3]);
401 scale_y = hypot(dmatrix[1], dmatrix[4]);
402
403 // Select flips to make the main diagonal positive.
404 hflip = dmatrix[0] < 0.0;
405 vflip = dmatrix[4] < 0.0;
406 if (hflip)
407 scale_x = -scale_x;
408 if (vflip)
409 scale_y = -scale_y;
410
411 // Rescale.
412 for (i = 0; i < 9; i += 3) {
413 dmatrix[i] /= scale_x;
414 dmatrix[i + 1] /= scale_y;
415 }
416
417 // Extract rotation.
418 angle = atan2(dmatrix[3], dmatrix[0]);
419
420 if (!(angle >= -M_PI && angle <= M_PI) ||
421 matrix[2] != 0.0 || matrix[5] != 0.0 ||
422 matrix[6] != 0.0 || matrix[7] != 0.0) {
423 av_log(bsf, AV_LOG_WARNING, "Input display matrix is not "
424 "representable in H.264 parameters.\n");
425 } else {
426 disp->hor_flip = hflip;
427 disp->ver_flip = vflip;
428 disp->anticlockwise_rotation =
429 (uint16_t)rint((angle >= 0.0 ? angle
430 : angle + 2 * M_PI) *
431 32768.0 / M_PI);
432 write = 1;
433 }
434 }
435
436 if (seek_point) {
437 if (!isnan(ctx->rotate)) {
438 disp->anticlockwise_rotation =
439 (uint16_t)rint((ctx->rotate >= 0.0 ? ctx->rotate
440 : ctx->rotate + 360.0) *
441 65536.0 / 360.0);
442 write = 1;
443 }
444 if (ctx->flip) {
445 disp->hor_flip = !!(ctx->flip & FLIP_HORIZONTAL);
446 disp->ver_flip = !!(ctx->flip & FLIP_VERTICAL);
447 write = 1;
448 }
449 }
450
451 if (write) {
452 disp->display_orientation_repetition_period = 1;
453
454 err = ff_cbs_sei_add_message(ctx->common.output, au, 1,
455 SEI_TYPE_DISPLAY_ORIENTATION,
456 disp, NULL);
457 if (err < 0) {
458 av_log(bsf, AV_LOG_ERROR, "Failed to add display orientation "
459 "SEI message to access unit.\n");
460 return err;
461 }
462 }
463 }
464
465 return 0;
466 }
467
468 2390 static int h264_metadata_update_fragment(AVBSFContext *bsf, AVPacket *pkt,
469 CodedBitstreamFragment *au)
470 {
471 2390 H264MetadataContext *ctx = bsf->priv_data;
472 int err, i, has_sps, seek_point;
473
474
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2390 if (ctx->aud == BSF_ELEMENT_REMOVE) {
475
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216 for (i = au->nb_units - 1; i >= 0; i--) {
476
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176 if (au->units[i].type == H264_NAL_AUD)
477 39 ff_cbs_delete_unit(au, i);
478 }
479
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2350 } else if (ctx->aud == BSF_ELEMENT_INSERT) {
480 if (pkt) {
481 err = h264_metadata_insert_aud(bsf, au);
482 if (err < 0)
483 return err;
484 }
485 }
486
487 2390 has_sps = 0;
488
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9143 for (i = 0; i < au->nb_units; i++) {
489
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6753 if (au->units[i].type == H264_NAL_SPS) {
490 42 err = h264_metadata_update_sps(bsf, au->units[i].content);
491
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42 if (err < 0)
492 return err;
493 42 has_sps = 1;
494 }
495 }
496
497
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2390 if (pkt) {
498 // The current packet should be treated as a seek point for metadata
499 // insertion if any of:
500 // - It is the first packet in the stream.
501 // - It contains an SPS, indicating that a sequence might start here.
502 // - It is marked as containing a key frame.
503
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4722 seek_point = !ctx->done_first_au || has_sps ||
504
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2348 (pkt->flags & AV_PKT_FLAG_KEY);
505 } else {
506 16 seek_point = 0;
507 }
508
509
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2390 if (ctx->sei_user_data && seek_point) {
510 err = ff_cbs_sei_add_message(ctx->common.output, au, 1,
511 SEI_TYPE_USER_DATA_UNREGISTERED,
512 &ctx->sei_user_data_payload, NULL);
513 if (err < 0) {
514 av_log(bsf, AV_LOG_ERROR, "Failed to add user data SEI "
515 "message to access unit.\n");
516 return err;
517 }
518 }
519
520
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2390 if (ctx->delete_filler) {
521
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177 for (i = au->nb_units - 1; i >= 0; i--) {
522
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137 if (au->units[i].type == H264_NAL_FILLER_DATA) {
523 33 ff_cbs_delete_unit(au, i);
524 33 continue;
525 }
526 }
527
528 40 ff_cbs_sei_delete_message_type(ctx->common.output, au,
529 SEI_TYPE_FILLER_PAYLOAD);
530 }
531
532
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2390 if (pkt && ctx->display_orientation != BSF_ELEMENT_PASS) {
533 err = h264_metadata_handle_display_orientation(bsf, pkt, au,
534 seek_point);
535 if (err < 0)
536 return err;
537 }
538
539
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2390 if (pkt)
540 2374 ctx->done_first_au = 1;
541
542 2390 return 0;
543 }
544
545 static const CBSBSFType h264_metadata_type = {
546 .codec_id = AV_CODEC_ID_H264,
547 .fragment_name = "access unit",
548 .unit_name = "NAL unit",
549 .update_fragment = &h264_metadata_update_fragment,
550 };
551
552 16 static int h264_metadata_init(AVBSFContext *bsf)
553 {
554 16 H264MetadataContext *ctx = bsf->priv_data;
555
556
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16 if (ctx->sei_user_data) {
557 SEIRawUserDataUnregistered *udu = &ctx->sei_user_data_payload;
558 int i, j;
559
560 // Parse UUID. It must be a hex string of length 32, possibly
561 // containing '-'s between hex digits (which we ignore).
562 for (i = j = 0; j < 32 && i < 64 && ctx->sei_user_data[i]; i++) {
563 int c, v;
564 c = ctx->sei_user_data[i];
565 if (c == '-') {
566 continue;
567 } else if (av_isxdigit(c)) {
568 c = av_tolower(c);
569 v = (c <= '9' ? c - '0' : c - 'a' + 10);
570 } else {
571 break;
572 }
573 if (j & 1)
574 udu->uuid_iso_iec_11578[j / 2] |= v;
575 else
576 udu->uuid_iso_iec_11578[j / 2] = v << 4;
577 ++j;
578 }
579 if (j == 32 && ctx->sei_user_data[i] == '+') {
580 udu->data = (uint8_t*)ctx->sei_user_data + i + 1;
581 udu->data_length = strlen(udu->data) + 1;
582 } else {
583 av_log(bsf, AV_LOG_ERROR, "Invalid user data: "
584 "must be \"UUID+string\".\n");
585 return AVERROR(EINVAL);
586 }
587 }
588
589 16 return ff_cbs_bsf_generic_init(bsf, &h264_metadata_type);
590 }
591
592 #define OFFSET(x) offsetof(H264MetadataContext, x)
593 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM)
594 static const AVOption h264_metadata_options[] = {
595 BSF_ELEMENT_OPTIONS_PIR("aud", "Access Unit Delimiter NAL units",
596 aud, FLAGS),
597
598 { "sample_aspect_ratio", "Set sample aspect ratio (table E-1)",
599 OFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL,
600 { .dbl = 0.0 }, 0, 65535, FLAGS },
601
602 { "overscan_appropriate_flag", "Set VUI overscan appropriate flag",
603 OFFSET(overscan_appropriate_flag), AV_OPT_TYPE_INT,
604 { .i64 = -1 }, -1, 1, FLAGS },
605
606 { "video_format", "Set video format (table E-2)",
607 OFFSET(video_format), AV_OPT_TYPE_INT,
608 { .i64 = -1 }, -1, 7, FLAGS},
609 { "video_full_range_flag", "Set video full range flag",
610 OFFSET(video_full_range_flag), AV_OPT_TYPE_INT,
611 { .i64 = -1 }, -1, 1, FLAGS },
612 { "colour_primaries", "Set colour primaries (table E-3)",
613 OFFSET(colour_primaries), AV_OPT_TYPE_INT,
614 { .i64 = -1 }, -1, 255, FLAGS },
615 { "transfer_characteristics", "Set transfer characteristics (table E-4)",
616 OFFSET(transfer_characteristics), AV_OPT_TYPE_INT,
617 { .i64 = -1 }, -1, 255, FLAGS },
618 { "matrix_coefficients", "Set matrix coefficients (table E-5)",
619 OFFSET(matrix_coefficients), AV_OPT_TYPE_INT,
620 { .i64 = -1 }, -1, 255, FLAGS },
621
622 { "chroma_sample_loc_type", "Set chroma sample location type (figure E-1)",
623 OFFSET(chroma_sample_loc_type), AV_OPT_TYPE_INT,
624 { .i64 = -1 }, -1, 5, FLAGS },
625
626 { "tick_rate", "Set VUI tick rate (time_scale / num_units_in_tick)",
627 OFFSET(tick_rate), AV_OPT_TYPE_RATIONAL,
628 { .dbl = 0.0 }, 0, UINT_MAX, FLAGS },
629 { "fixed_frame_rate_flag", "Set VUI fixed frame rate flag",
630 OFFSET(fixed_frame_rate_flag), AV_OPT_TYPE_INT,
631 { .i64 = -1 }, -1, 1, FLAGS },
632 { "zero_new_constraint_set_flags", "Set constraint_set4_flag / constraint_set5_flag to zero",
633 OFFSET(zero_new_constraint_set_flags), AV_OPT_TYPE_BOOL,
634 { .i64 = 0 }, 0, 1, FLAGS },
635
636 { "crop_left", "Set left border crop offset",
637 OFFSET(crop_left), AV_OPT_TYPE_INT,
638 { .i64 = -1 }, -1, H264_MAX_WIDTH, FLAGS },
639 { "crop_right", "Set right border crop offset",
640 OFFSET(crop_right), AV_OPT_TYPE_INT,
641 { .i64 = -1 }, -1, H264_MAX_WIDTH, FLAGS },
642 { "crop_top", "Set top border crop offset",
643 OFFSET(crop_top), AV_OPT_TYPE_INT,
644 { .i64 = -1 }, -1, H264_MAX_HEIGHT, FLAGS },
645 { "crop_bottom", "Set bottom border crop offset",
646 OFFSET(crop_bottom), AV_OPT_TYPE_INT,
647 { .i64 = -1 }, -1, H264_MAX_HEIGHT, FLAGS },
648
649 { "sei_user_data", "Insert SEI user data (UUID+string)",
650 OFFSET(sei_user_data), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = FLAGS },
651
652 { "delete_filler", "Delete all filler (both NAL and SEI)",
653 OFFSET(delete_filler), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS},
654
655 BSF_ELEMENT_OPTIONS_PIRE("display_orientation",
656 "Display orientation SEI",
657 display_orientation, FLAGS),
658
659 { "rotate", "Set rotation in display orientation SEI (anticlockwise angle in degrees)",
660 OFFSET(rotate), AV_OPT_TYPE_DOUBLE,
661 { .dbl = NAN }, -360.0, +360.0, FLAGS },
662 { "flip", "Set flip in display orientation SEI",
663 OFFSET(flip), AV_OPT_TYPE_FLAGS,
664 { .i64 = 0 }, 0, FLIP_HORIZONTAL | FLIP_VERTICAL, FLAGS, .unit = "flip" },
665 { "horizontal", "Set hor_flip",
666 0, AV_OPT_TYPE_CONST,
667 { .i64 = FLIP_HORIZONTAL }, .flags = FLAGS, .unit = "flip" },
668 { "vertical", "Set ver_flip",
669 0, AV_OPT_TYPE_CONST,
670 { .i64 = FLIP_VERTICAL }, .flags = FLAGS, .unit = "flip" },
671
672 { "level", "Set level (table A-1)",
673 OFFSET(level), AV_OPT_TYPE_INT,
674 { .i64 = LEVEL_UNSET }, LEVEL_UNSET, 0xff, FLAGS, .unit = "level" },
675 { "auto", "Attempt to guess level from stream properties",
676 0, AV_OPT_TYPE_CONST,
677 { .i64 = LEVEL_AUTO }, .flags = FLAGS, .unit = "level" },
678 #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
679 { .i64 = value }, .flags = FLAGS, .unit = "level"
680 { LEVEL("1", 10) },
681 { LEVEL("1b", 9) },
682 { LEVEL("1.1", 11) },
683 { LEVEL("1.2", 12) },
684 { LEVEL("1.3", 13) },
685 { LEVEL("2", 20) },
686 { LEVEL("2.1", 21) },
687 { LEVEL("2.2", 22) },
688 { LEVEL("3", 30) },
689 { LEVEL("3.1", 31) },
690 { LEVEL("3.2", 32) },
691 { LEVEL("4", 40) },
692 { LEVEL("4.1", 41) },
693 { LEVEL("4.2", 42) },
694 { LEVEL("5", 50) },
695 { LEVEL("5.1", 51) },
696 { LEVEL("5.2", 52) },
697 { LEVEL("6", 60) },
698 { LEVEL("6.1", 61) },
699 { LEVEL("6.2", 62) },
700 #undef LEVEL
701
702 { NULL }
703 };
704
705 static const AVClass h264_metadata_class = {
706 .class_name = "h264_metadata_bsf",
707 .item_name = av_default_item_name,
708 .option = h264_metadata_options,
709 .version = LIBAVUTIL_VERSION_INT,
710 };
711
712 static const enum AVCodecID h264_metadata_codec_ids[] = {
713 AV_CODEC_ID_H264, AV_CODEC_ID_NONE,
714 };
715
716 const FFBitStreamFilter ff_h264_metadata_bsf = {
717 .p.name = "h264_metadata",
718 .p.codec_ids = h264_metadata_codec_ids,
719 .p.priv_class = &h264_metadata_class,
720 .priv_data_size = sizeof(H264MetadataContext),
721 .init = &h264_metadata_init,
722 .close = &ff_cbs_bsf_generic_close,
723 .filter = &ff_cbs_bsf_generic_filter,
724 };
725