FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/h264_metadata_bsf.c
Date: 2023-03-31 03:41:15
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 "h264.h"
30 #include "h264_levels.h"
31 #include "h264_sei.h"
32 #include "h2645data.h"
33
34 enum {
35 FLIP_HORIZONTAL = 1,
36 FLIP_VERTICAL = 2,
37 };
38
39 enum {
40 LEVEL_UNSET = -2,
41 LEVEL_AUTO = -1,
42 };
43
44 typedef struct H264MetadataContext {
45 CBSBSFContext common;
46
47 int done_first_au;
48
49 int aud;
50 H264RawAUD aud_nal;
51
52 AVRational sample_aspect_ratio;
53
54 int overscan_appropriate_flag;
55
56 int video_format;
57 int video_full_range_flag;
58 int colour_primaries;
59 int transfer_characteristics;
60 int matrix_coefficients;
61
62 int chroma_sample_loc_type;
63
64 AVRational tick_rate;
65 int fixed_frame_rate_flag;
66 int zero_new_constraint_set_flags;
67
68 int crop_left;
69 int crop_right;
70 int crop_top;
71 int crop_bottom;
72
73 const char *sei_user_data;
74 SEIRawUserDataUnregistered sei_user_data_payload;
75
76 int delete_filler;
77
78 int display_orientation;
79 double rotate;
80 int flip;
81 H264RawSEIDisplayOrientation display_orientation_payload;
82
83 int level;
84 } H264MetadataContext;
85
86
87 static int h264_metadata_insert_aud(AVBSFContext *bsf,
88 CodedBitstreamFragment *au)
89 {
90 H264MetadataContext *ctx = bsf->priv_data;
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
130 err = ff_cbs_insert_unit_content(au, 0, H264_NAL_AUD,
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
140 42 static int h264_metadata_update_sps(AVBSFContext *bsf,
141 H264RawSPS *sps)
142 {
143 42 H264MetadataContext *ctx = bsf->priv_data;
144 42 int need_vui = 0;
145 int crop_unit_x, crop_unit_y;
146
147
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42 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 }
158 if (i == FF_ARRAY_ELEMS(ff_h2645_pixel_aspect)) {
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
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42 if (ctx->overscan_appropriate_flag >= 0) {
177 SET_VUI_FIELD(overscan_appropriate_flag);
178 sps->vui.overscan_info_present_flag = 1;
179 }
180
181
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42 if (ctx->video_format >= 0 ||
182
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42 ctx->video_full_range_flag >= 0 ||
183
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42 ctx->colour_primaries >= 0 ||
184
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42 ctx->transfer_characteristics >= 0 ||
185
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42 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);
196 SET_VUI_FIELD(transfer_characteristics);
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
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42 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
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42 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
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42 SET_VUI_FIELD(fixed_frame_rate_flag);
226
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42 if (ctx->zero_new_constraint_set_flags) {
227 sps->constraint_set4_flag = 0;
228 sps->constraint_set5_flag = 0;
229 }
230
231
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42 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
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42 crop_unit_x = 1 + (sps->chroma_format_idc < 3);
236
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42 crop_unit_y = (1 + (sps->chroma_format_idc < 2)) *
237 42 (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
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42 CROP(left, crop_unit_x);
252
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42 CROP(right, crop_unit_x);
253
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42 CROP(top, crop_unit_y);
254
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42 CROP(bottom, crop_unit_y);
255 #undef CROP
256
257
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42 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,
292 width, height, dpb_frames);
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
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42 if (need_vui)
319 sps->vui_parameters_present_flag = 1;
320
321 42 return 0;
322 }
323
324 static int h264_metadata_handle_display_orientation(AVBSFContext *bsf,
325 AVPacket *pkt,
326 CodedBitstreamFragment *au,
327 int seek_point)
328 {
329 H264MetadataContext *ctx = bsf->priv_data;
330 SEIRawMessage *message;
331 int err;
332
333 message = NULL;
334 while (ff_cbs_sei_find_message(ctx->common.output, au,
335 SEI_TYPE_DISPLAY_ORIENTATION,
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
355 av_display_rotation_set(matrix, angle);
356 av_display_matrix_flip(matrix, disp->hor_flip, disp->ver_flip);
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.
361 err = av_packet_add_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX,
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,
375 SEI_TYPE_DISPLAY_ORIENTATION);
376 }
377
378 if (ctx->display_orientation == BSF_ELEMENT_INSERT) {
379 H264RawSEIDisplayOrientation *disp =
380 &ctx->display_orientation_payload;
381 uint8_t *data;
382 size_t size;
383 int write = 0;
384
385 data = av_packet_get_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX, &size);
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) {
450 disp->display_orientation_repetition_period = 1;
451
452 err = ff_cbs_sei_add_message(ctx->common.output, au, 1,
453 SEI_TYPE_DISPLAY_ORIENTATION,
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
466 2390 static int h264_metadata_update_fragment(AVBSFContext *bsf, AVPacket *pkt,
467 CodedBitstreamFragment *au)
468 {
469 2390 H264MetadataContext *ctx = bsf->priv_data;
470 int err, i, has_sps, seek_point;
471
472
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2390 if (ctx->aud == BSF_ELEMENT_REMOVE) {
473
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216 for (i = au->nb_units - 1; i >= 0; i--) {
474
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176 if (au->units[i].type == H264_NAL_AUD)
475 39 ff_cbs_delete_unit(au, i);
476 }
477
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2350 } else if (ctx->aud == BSF_ELEMENT_INSERT) {
478 if (pkt) {
479 err = h264_metadata_insert_aud(bsf, au);
480 if (err < 0)
481 return err;
482 }
483 }
484
485 2390 has_sps = 0;
486
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9143 for (i = 0; i < au->nb_units; i++) {
487
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6753 if (au->units[i].type == H264_NAL_SPS) {
488 42 err = h264_metadata_update_sps(bsf, au->units[i].content);
489
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42 if (err < 0)
490 return err;
491 42 has_sps = 1;
492 }
493 }
494
495
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2390 if (pkt) {
496 // The current packet should be treated as a seek point for metadata
497 // insertion if any of:
498 // - It is the first packet in the stream.
499 // - It contains an SPS, indicating that a sequence might start here.
500 // - It is marked as containing a key frame.
501
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4722 seek_point = !ctx->done_first_au || has_sps ||
502
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2348 (pkt->flags & AV_PKT_FLAG_KEY);
503 } else {
504 16 seek_point = 0;
505 }
506
507
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2390 if (ctx->sei_user_data && seek_point) {
508 err = ff_cbs_sei_add_message(ctx->common.output, au, 1,
509 SEI_TYPE_USER_DATA_UNREGISTERED,
510 &ctx->sei_user_data_payload, NULL);
511 if (err < 0) {
512 av_log(bsf, AV_LOG_ERROR, "Failed to add user data SEI "
513 "message to access unit.\n");
514 return err;
515 }
516 }
517
518
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2390 if (ctx->delete_filler) {
519
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177 for (i = au->nb_units - 1; i >= 0; i--) {
520
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137 if (au->units[i].type == H264_NAL_FILLER_DATA) {
521 33 ff_cbs_delete_unit(au, i);
522 33 continue;
523 }
524 }
525
526 40 ff_cbs_sei_delete_message_type(ctx->common.output, au,
527 SEI_TYPE_FILLER_PAYLOAD);
528 }
529
530
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2390 if (pkt && ctx->display_orientation != BSF_ELEMENT_PASS) {
531 err = h264_metadata_handle_display_orientation(bsf, pkt, au,
532 seek_point);
533 if (err < 0)
534 return err;
535 }
536
537
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2390 if (pkt)
538 2374 ctx->done_first_au = 1;
539
540 2390 return 0;
541 }
542
543 static const CBSBSFType h264_metadata_type = {
544 .codec_id = AV_CODEC_ID_H264,
545 .fragment_name = "access unit",
546 .unit_name = "NAL unit",
547 .update_fragment = &h264_metadata_update_fragment,
548 };
549
550 16 static int h264_metadata_init(AVBSFContext *bsf)
551 {
552 16 H264MetadataContext *ctx = bsf->priv_data;
553
554
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16 if (ctx->sei_user_data) {
555 SEIRawUserDataUnregistered *udu = &ctx->sei_user_data_payload;
556 int i, j;
557
558 // Parse UUID. It must be a hex string of length 32, possibly
559 // containing '-'s between hex digits (which we ignore).
560 for (i = j = 0; j < 32 && i < 64 && ctx->sei_user_data[i]; i++) {
561 int c, v;
562 c = ctx->sei_user_data[i];
563 if (c == '-') {
564 continue;
565 } else if (av_isxdigit(c)) {
566 c = av_tolower(c);
567 v = (c <= '9' ? c - '0' : c - 'a' + 10);
568 } else {
569 break;
570 }
571 if (j & 1)
572 udu->uuid_iso_iec_11578[j / 2] |= v;
573 else
574 udu->uuid_iso_iec_11578[j / 2] = v << 4;
575 ++j;
576 }
577 if (j == 32 && ctx->sei_user_data[i] == '+') {
578 udu->data = (uint8_t*)ctx->sei_user_data + i + 1;
579 udu->data_length = strlen(udu->data) + 1;
580 } else {
581 av_log(bsf, AV_LOG_ERROR, "Invalid user data: "
582 "must be \"UUID+string\".\n");
583 return AVERROR(EINVAL);
584 }
585 }
586
587 16 return ff_cbs_bsf_generic_init(bsf, &h264_metadata_type);
588 }
589
590 #define OFFSET(x) offsetof(H264MetadataContext, x)
591 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM)
592 static const AVOption h264_metadata_options[] = {
593 BSF_ELEMENT_OPTIONS_PIR("aud", "Access Unit Delimiter NAL units",
594 aud, FLAGS),
595
596 { "sample_aspect_ratio", "Set sample aspect ratio (table E-1)",
597 OFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL,
598 { .dbl = 0.0 }, 0, 65535, FLAGS },
599
600 { "overscan_appropriate_flag", "Set VUI overscan appropriate flag",
601 OFFSET(overscan_appropriate_flag), AV_OPT_TYPE_INT,
602 { .i64 = -1 }, -1, 1, FLAGS },
603
604 { "video_format", "Set video format (table E-2)",
605 OFFSET(video_format), AV_OPT_TYPE_INT,
606 { .i64 = -1 }, -1, 7, FLAGS},
607 { "video_full_range_flag", "Set video full range flag",
608 OFFSET(video_full_range_flag), AV_OPT_TYPE_INT,
609 { .i64 = -1 }, -1, 1, FLAGS },
610 { "colour_primaries", "Set colour primaries (table E-3)",
611 OFFSET(colour_primaries), AV_OPT_TYPE_INT,
612 { .i64 = -1 }, -1, 255, FLAGS },
613 { "transfer_characteristics", "Set transfer characteristics (table E-4)",
614 OFFSET(transfer_characteristics), AV_OPT_TYPE_INT,
615 { .i64 = -1 }, -1, 255, FLAGS },
616 { "matrix_coefficients", "Set matrix coefficients (table E-5)",
617 OFFSET(matrix_coefficients), AV_OPT_TYPE_INT,
618 { .i64 = -1 }, -1, 255, FLAGS },
619
620 { "chroma_sample_loc_type", "Set chroma sample location type (figure E-1)",
621 OFFSET(chroma_sample_loc_type), AV_OPT_TYPE_INT,
622 { .i64 = -1 }, -1, 5, FLAGS },
623
624 { "tick_rate", "Set VUI tick rate (time_scale / num_units_in_tick)",
625 OFFSET(tick_rate), AV_OPT_TYPE_RATIONAL,
626 { .dbl = 0.0 }, 0, UINT_MAX, FLAGS },
627 { "fixed_frame_rate_flag", "Set VUI fixed frame rate flag",
628 OFFSET(fixed_frame_rate_flag), AV_OPT_TYPE_INT,
629 { .i64 = -1 }, -1, 1, FLAGS },
630 { "zero_new_constraint_set_flags", "Set constraint_set4_flag / constraint_set5_flag to zero",
631 OFFSET(zero_new_constraint_set_flags), AV_OPT_TYPE_BOOL,
632 { .i64 = 0 }, 0, 1, FLAGS },
633
634 { "crop_left", "Set left border crop offset",
635 OFFSET(crop_left), AV_OPT_TYPE_INT,
636 { .i64 = -1 }, -1, H264_MAX_WIDTH, FLAGS },
637 { "crop_right", "Set right border crop offset",
638 OFFSET(crop_right), AV_OPT_TYPE_INT,
639 { .i64 = -1 }, -1, H264_MAX_WIDTH, FLAGS },
640 { "crop_top", "Set top border crop offset",
641 OFFSET(crop_top), AV_OPT_TYPE_INT,
642 { .i64 = -1 }, -1, H264_MAX_HEIGHT, FLAGS },
643 { "crop_bottom", "Set bottom border crop offset",
644 OFFSET(crop_bottom), AV_OPT_TYPE_INT,
645 { .i64 = -1 }, -1, H264_MAX_HEIGHT, FLAGS },
646
647 { "sei_user_data", "Insert SEI user data (UUID+string)",
648 OFFSET(sei_user_data), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = FLAGS },
649
650 { "delete_filler", "Delete all filler (both NAL and SEI)",
651 OFFSET(delete_filler), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS},
652
653 BSF_ELEMENT_OPTIONS_PIRE("display_orientation",
654 "Display orientation SEI",
655 display_orientation, FLAGS),
656
657 { "rotate", "Set rotation in display orientation SEI (anticlockwise angle in degrees)",
658 OFFSET(rotate), AV_OPT_TYPE_DOUBLE,
659 { .dbl = NAN }, -360.0, +360.0, FLAGS },
660 { "flip", "Set flip in display orientation SEI",
661 OFFSET(flip), AV_OPT_TYPE_FLAGS,
662 { .i64 = 0 }, 0, FLIP_HORIZONTAL | FLIP_VERTICAL, FLAGS, "flip" },
663 { "horizontal", "Set hor_flip",
664 0, AV_OPT_TYPE_CONST,
665 { .i64 = FLIP_HORIZONTAL }, .flags = FLAGS, .unit = "flip" },
666 { "vertical", "Set ver_flip",
667 0, AV_OPT_TYPE_CONST,
668 { .i64 = FLIP_VERTICAL }, .flags = FLAGS, .unit = "flip" },
669
670 { "level", "Set level (table A-1)",
671 OFFSET(level), AV_OPT_TYPE_INT,
672 { .i64 = LEVEL_UNSET }, LEVEL_UNSET, 0xff, FLAGS, "level" },
673 { "auto", "Attempt to guess level from stream properties",
674 0, AV_OPT_TYPE_CONST,
675 { .i64 = LEVEL_AUTO }, .flags = FLAGS, .unit = "level" },
676 #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
677 { .i64 = value }, .flags = FLAGS, .unit = "level"
678 { LEVEL("1", 10) },
679 { LEVEL("1b", 9) },
680 { LEVEL("1.1", 11) },
681 { LEVEL("1.2", 12) },
682 { LEVEL("1.3", 13) },
683 { LEVEL("2", 20) },
684 { LEVEL("2.1", 21) },
685 { LEVEL("2.2", 22) },
686 { LEVEL("3", 30) },
687 { LEVEL("3.1", 31) },
688 { LEVEL("3.2", 32) },
689 { LEVEL("4", 40) },
690 { LEVEL("4.1", 41) },
691 { LEVEL("4.2", 42) },
692 { LEVEL("5", 50) },
693 { LEVEL("5.1", 51) },
694 { LEVEL("5.2", 52) },
695 { LEVEL("6", 60) },
696 { LEVEL("6.1", 61) },
697 { LEVEL("6.2", 62) },
698 #undef LEVEL
699
700 { NULL }
701 };
702
703 static const AVClass h264_metadata_class = {
704 .class_name = "h264_metadata_bsf",
705 .item_name = av_default_item_name,
706 .option = h264_metadata_options,
707 .version = LIBAVUTIL_VERSION_INT,
708 };
709
710 static const enum AVCodecID h264_metadata_codec_ids[] = {
711 AV_CODEC_ID_H264, AV_CODEC_ID_NONE,
712 };
713
714 const FFBitStreamFilter ff_h264_metadata_bsf = {
715 .p.name = "h264_metadata",
716 .p.codec_ids = h264_metadata_codec_ids,
717 .p.priv_class = &h264_metadata_class,
718 .priv_data_size = sizeof(H264MetadataContext),
719 .init = &h264_metadata_init,
720 .close = &ff_cbs_bsf_generic_close,
721 .filter = &ff_cbs_bsf_generic_filter,
722 };
723