FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/h264_metadata_bsf.c
Date: 2021-09-24 20:55:06
Exec Total Coverage
Lines: 56 249 22.5%
Branches: 55 234 23.5%

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 "cbs.h"
26 #include "cbs_bsf.h"
27 #include "cbs_h264.h"
28 #include "h264.h"
29 #include "h264_levels.h"
30 #include "h264_sei.h"
31
32 enum {
33 FLIP_HORIZONTAL = 1,
34 FLIP_VERTICAL = 2,
35 };
36
37 enum {
38 LEVEL_UNSET = -2,
39 LEVEL_AUTO = -1,
40 };
41
42 typedef struct H264MetadataContext {
43 CBSBSFContext common;
44
45 int done_first_au;
46
47 int aud;
48 H264RawAUD aud_nal;
49
50 AVRational sample_aspect_ratio;
51
52 int overscan_appropriate_flag;
53
54 int video_format;
55 int video_full_range_flag;
56 int colour_primaries;
57 int transfer_characteristics;
58 int matrix_coefficients;
59
60 int chroma_sample_loc_type;
61
62 AVRational tick_rate;
63 int fixed_frame_rate_flag;
64 int zero_new_constraint_set_flags;
65
66 int crop_left;
67 int crop_right;
68 int crop_top;
69 int crop_bottom;
70
71 const char *sei_user_data;
72 SEIRawUserDataUnregistered sei_user_data_payload;
73
74 int delete_filler;
75
76 int display_orientation;
77 double rotate;
78 int flip;
79 H264RawSEIDisplayOrientation display_orientation_payload;
80
81 int level;
82 } H264MetadataContext;
83
84
85 static int h264_metadata_insert_aud(AVBSFContext *bsf,
86 CodedBitstreamFragment *au)
87 {
88 H264MetadataContext *ctx = bsf->priv_data;
89 int primary_pic_type_mask = 0xff;
90 int err, i, j;
91
92 static const int primary_pic_type_table[] = {
93 0x084, // 2, 7
94 0x0a5, // 0, 2, 5, 7
95 0x0e7, // 0, 1, 2, 5, 6, 7
96 0x210, // 4, 9
97 0x318, // 3, 4, 8, 9
98 0x294, // 2, 4, 7, 9
99 0x3bd, // 0, 2, 3, 4, 5, 7, 8, 9
100 0x3ff, // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
101 };
102
103 for (i = 0; i < au->nb_units; i++) {
104 if (au->units[i].type == H264_NAL_SLICE ||
105 au->units[i].type == H264_NAL_IDR_SLICE) {
106 H264RawSlice *slice = au->units[i].content;
107 for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++) {
108 if (!(primary_pic_type_table[j] &
109 (1 << slice->header.slice_type)))
110 primary_pic_type_mask &= ~(1 << j);
111 }
112 }
113 }
114 for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++)
115 if (primary_pic_type_mask & (1 << j))
116 break;
117 if (j >= FF_ARRAY_ELEMS(primary_pic_type_table)) {
118 av_log(bsf, AV_LOG_ERROR, "No usable primary_pic_type: "
119 "invalid slice types?\n");
120 return AVERROR_INVALIDDATA;
121 }
122
123 ctx->aud_nal = (H264RawAUD) {
124 .nal_unit_header.nal_unit_type = H264_NAL_AUD,
125 .primary_pic_type = j,
126 };
127
128 err = ff_cbs_insert_unit_content(au, 0, H264_NAL_AUD,
129 &ctx->aud_nal, NULL);
130 if (err < 0) {
131 av_log(bsf, AV_LOG_ERROR, "Failed to insert AUD.\n");
132 return err;
133 }
134
135 return 0;
136 }
137
138 42 static int h264_metadata_update_sps(AVBSFContext *bsf,
139 H264RawSPS *sps)
140 {
141 42 H264MetadataContext *ctx = bsf->priv_data;
142 42 int need_vui = 0;
143 int crop_unit_x, crop_unit_y;
144
145
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42 if (ctx->sample_aspect_ratio.num && ctx->sample_aspect_ratio.den) {
146 // Table E-1.
147 static const AVRational sar_idc[] = {
148 { 0, 0 }, // Unspecified (never written here).
149 { 1, 1 }, { 12, 11 }, { 10, 11 }, { 16, 11 },
150 { 40, 33 }, { 24, 11 }, { 20, 11 }, { 32, 11 },
151 { 80, 33 }, { 18, 11 }, { 15, 11 }, { 64, 33 },
152 { 160, 99 }, { 4, 3 }, { 3, 2 }, { 2, 1 },
153 };
154 int num, den, i;
155
156 av_reduce(&num, &den, ctx->sample_aspect_ratio.num,
157 ctx->sample_aspect_ratio.den, 65535);
158
159 for (i = 1; i < FF_ARRAY_ELEMS(sar_idc); i++) {
160 if (num == sar_idc[i].num &&
161 den == sar_idc[i].den)
162 break;
163 }
164 if (i == FF_ARRAY_ELEMS(sar_idc)) {
165 sps->vui.aspect_ratio_idc = 255;
166 sps->vui.sar_width = num;
167 sps->vui.sar_height = den;
168 } else {
169 sps->vui.aspect_ratio_idc = i;
170 }
171 sps->vui.aspect_ratio_info_present_flag = 1;
172 need_vui = 1;
173 }
174
175 #define SET_VUI_FIELD(field) do { \
176 if (ctx->field >= 0) { \
177 sps->vui.field = ctx->field; \
178 need_vui = 1; \
179 } \
180 } while (0)
181
182
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42 if (ctx->overscan_appropriate_flag >= 0) {
183 SET_VUI_FIELD(overscan_appropriate_flag);
184 sps->vui.overscan_info_present_flag = 1;
185 }
186
187
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42 if (ctx->video_format >= 0 ||
188
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42 ctx->video_full_range_flag >= 0 ||
189
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42 ctx->colour_primaries >= 0 ||
190
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42 ctx->transfer_characteristics >= 0 ||
191
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42 ctx->matrix_coefficients >= 0) {
192
193 SET_VUI_FIELD(video_format);
194
195 SET_VUI_FIELD(video_full_range_flag);
196
197 if (ctx->colour_primaries >= 0 ||
198 ctx->transfer_characteristics >= 0 ||
199 ctx->matrix_coefficients >= 0) {
200
201 SET_VUI_FIELD(colour_primaries);
202 SET_VUI_FIELD(transfer_characteristics);
203 SET_VUI_FIELD(matrix_coefficients);
204
205 sps->vui.colour_description_present_flag = 1;
206 }
207 sps->vui.video_signal_type_present_flag = 1;
208 }
209
210
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42 if (ctx->chroma_sample_loc_type >= 0) {
211 sps->vui.chroma_sample_loc_type_top_field =
212 ctx->chroma_sample_loc_type;
213 sps->vui.chroma_sample_loc_type_bottom_field =
214 ctx->chroma_sample_loc_type;
215 sps->vui.chroma_loc_info_present_flag = 1;
216 need_vui = 1;
217 }
218
219
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42 if (ctx->tick_rate.num && ctx->tick_rate.den) {
220 int num, den;
221
222 av_reduce(&num, &den, ctx->tick_rate.num, ctx->tick_rate.den,
223 UINT32_MAX > INT_MAX ? UINT32_MAX : INT_MAX);
224
225 sps->vui.time_scale = num;
226 sps->vui.num_units_in_tick = den;
227
228 sps->vui.timing_info_present_flag = 1;
229 need_vui = 1;
230 }
231
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42 SET_VUI_FIELD(fixed_frame_rate_flag);
232
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42 if (ctx->zero_new_constraint_set_flags) {
233 sps->constraint_set4_flag = 0;
234 sps->constraint_set5_flag = 0;
235 }
236
237
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42 if (sps->separate_colour_plane_flag || sps->chroma_format_idc == 0) {
238 crop_unit_x = 1;
239 crop_unit_y = 2 - sps->frame_mbs_only_flag;
240 } else {
241
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42 crop_unit_x = 1 + (sps->chroma_format_idc < 3);
242
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42 crop_unit_y = (1 + (sps->chroma_format_idc < 2)) *
243 42 (2 - sps->frame_mbs_only_flag);
244 }
245 #define CROP(border, unit) do { \
246 if (ctx->crop_ ## border >= 0) { \
247 if (ctx->crop_ ## border % unit != 0) { \
248 av_log(bsf, AV_LOG_ERROR, "Invalid value for crop_%s: " \
249 "must be a multiple of %d.\n", #border, unit); \
250 return AVERROR(EINVAL); \
251 } \
252 sps->frame_crop_ ## border ## _offset = \
253 ctx->crop_ ## border / unit; \
254 sps->frame_cropping_flag = 1; \
255 } \
256 } while (0)
257
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42 CROP(left, crop_unit_x);
258
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42 CROP(right, crop_unit_x);
259
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42 CROP(top, crop_unit_y);
260
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42 CROP(bottom, crop_unit_y);
261 #undef CROP
262
263
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42 if (ctx->level != LEVEL_UNSET) {
264 int level_idc;
265
266 if (ctx->level == LEVEL_AUTO) {
267 const H264LevelDescriptor *desc;
268 int64_t bit_rate;
269 int width, height, dpb_frames;
270 int framerate;
271
272 if (sps->vui.nal_hrd_parameters_present_flag) {
273 bit_rate = (sps->vui.nal_hrd_parameters.bit_rate_value_minus1[0] + 1) *
274 (INT64_C(1) << (sps->vui.nal_hrd_parameters.bit_rate_scale + 6));
275 } else if (sps->vui.vcl_hrd_parameters_present_flag) {
276 bit_rate = (sps->vui.vcl_hrd_parameters.bit_rate_value_minus1[0] + 1) *
277 (INT64_C(1) << (sps->vui.vcl_hrd_parameters.bit_rate_scale + 6));
278 // Adjust for VCL vs. NAL limits.
279 bit_rate = bit_rate * 6 / 5;
280 } else {
281 bit_rate = 0;
282 }
283
284 // Don't use max_dec_frame_buffering if it is only inferred.
285 dpb_frames = sps->vui.bitstream_restriction_flag ?
286 sps->vui.max_dec_frame_buffering : H264_MAX_DPB_FRAMES;
287
288 width = 16 * (sps->pic_width_in_mbs_minus1 + 1);
289 height = 16 * (sps->pic_height_in_map_units_minus1 + 1) *
290 (2 - sps->frame_mbs_only_flag);
291
292 if (sps->vui.timing_info_present_flag)
293 framerate = sps->vui.time_scale / sps->vui.num_units_in_tick / 2;
294 else
295 framerate = 0;
296
297 desc = ff_h264_guess_level(sps->profile_idc, bit_rate, framerate,
298 width, height, dpb_frames);
299 if (desc) {
300 level_idc = desc->level_idc;
301 } else {
302 av_log(bsf, AV_LOG_WARNING, "Stream does not appear to "
303 "conform to any level: using level 6.2.\n");
304 level_idc = 62;
305 }
306 } else {
307 level_idc = ctx->level;
308 }
309
310 if (level_idc == 9) {
311 if (sps->profile_idc == 66 ||
312 sps->profile_idc == 77 ||
313 sps->profile_idc == 88) {
314 sps->level_idc = 11;
315 sps->constraint_set3_flag = 1;
316 } else {
317 sps->level_idc = 9;
318 }
319 } else {
320 sps->level_idc = level_idc;
321 }
322 }
323
324
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42 if (need_vui)
325 sps->vui_parameters_present_flag = 1;
326
327 42 return 0;
328 }
329
330 static int h264_metadata_handle_display_orientation(AVBSFContext *bsf,
331 AVPacket *pkt,
332 CodedBitstreamFragment *au,
333 int seek_point)
334 {
335 H264MetadataContext *ctx = bsf->priv_data;
336 SEIRawMessage *message;
337 int err;
338
339 message = NULL;
340 while (ff_cbs_sei_find_message(ctx->common.output, au,
341 SEI_TYPE_DISPLAY_ORIENTATION,
342 &message) == 0) {
343 H264RawSEIDisplayOrientation *disp = message->payload;
344 int32_t *matrix;
345
346 matrix = av_malloc(9 * sizeof(int32_t));
347 if (!matrix)
348 return AVERROR(ENOMEM);
349
350 av_display_rotation_set(matrix,
351 disp->anticlockwise_rotation *
352 180.0 / 65536.0);
353 av_display_matrix_flip(matrix, disp->hor_flip, disp->ver_flip);
354
355 // If there are multiple display orientation messages in an
356 // access unit, then the last one added to the packet (i.e.
357 // the first one in the access unit) will prevail.
358 err = av_packet_add_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX,
359 (uint8_t*)matrix,
360 9 * sizeof(int32_t));
361 if (err < 0) {
362 av_log(bsf, AV_LOG_ERROR, "Failed to attach extracted "
363 "displaymatrix side data to packet.\n");
364 av_free(matrix);
365 return AVERROR(ENOMEM);
366 }
367 }
368
369 if (ctx->display_orientation == BSF_ELEMENT_REMOVE ||
370 ctx->display_orientation == BSF_ELEMENT_INSERT) {
371 ff_cbs_sei_delete_message_type(ctx->common.output, au,
372 SEI_TYPE_DISPLAY_ORIENTATION);
373 }
374
375 if (ctx->display_orientation == BSF_ELEMENT_INSERT) {
376 H264RawSEIDisplayOrientation *disp =
377 &ctx->display_orientation_payload;
378 uint8_t *data;
379 size_t size;
380 int write = 0;
381
382 data = av_packet_get_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX, &size);
383 if (data && size >= 9 * sizeof(int32_t)) {
384 int32_t matrix[9];
385 double dmatrix[9];
386 int hflip, vflip, i;
387 double scale_x, scale_y, angle;
388
389 memcpy(matrix, data, sizeof(matrix));
390
391 for (i = 0; i < 9; i++)
392 dmatrix[i] = matrix[i] / 65536.0;
393
394 // Extract scale factors.
395 scale_x = hypot(dmatrix[0], dmatrix[3]);
396 scale_y = hypot(dmatrix[1], dmatrix[4]);
397
398 // Select flips to make the main diagonal positive.
399 hflip = dmatrix[0] < 0.0;
400 vflip = dmatrix[4] < 0.0;
401 if (hflip)
402 scale_x = -scale_x;
403 if (vflip)
404 scale_y = -scale_y;
405
406 // Rescale.
407 for (i = 0; i < 9; i += 3) {
408 dmatrix[i] /= scale_x;
409 dmatrix[i + 1] /= scale_y;
410 }
411
412 // Extract rotation.
413 angle = atan2(dmatrix[3], dmatrix[0]);
414
415 if (!(angle >= -M_PI && angle <= M_PI) ||
416 matrix[2] != 0.0 || matrix[5] != 0.0 ||
417 matrix[6] != 0.0 || matrix[7] != 0.0) {
418 av_log(bsf, AV_LOG_WARNING, "Input display matrix is not "
419 "representable in H.264 parameters.\n");
420 } else {
421 disp->hor_flip = hflip;
422 disp->ver_flip = vflip;
423 disp->anticlockwise_rotation =
424 (uint16_t)rint((angle >= 0.0 ? angle
425 : angle + 2 * M_PI) *
426 32768.0 / M_PI);
427 write = 1;
428 }
429 }
430
431 if (seek_point) {
432 if (!isnan(ctx->rotate)) {
433 disp->anticlockwise_rotation =
434 (uint16_t)rint((ctx->rotate >= 0.0 ? ctx->rotate
435 : ctx->rotate + 360.0) *
436 65536.0 / 360.0);
437 write = 1;
438 }
439 if (ctx->flip) {
440 disp->hor_flip = !!(ctx->flip & FLIP_HORIZONTAL);
441 disp->ver_flip = !!(ctx->flip & FLIP_VERTICAL);
442 write = 1;
443 }
444 }
445
446 if (write) {
447 disp->display_orientation_repetition_period = 1;
448
449 err = ff_cbs_sei_add_message(ctx->common.output, au, 1,
450 SEI_TYPE_DISPLAY_ORIENTATION,
451 disp, NULL);
452 if (err < 0) {
453 av_log(bsf, AV_LOG_ERROR, "Failed to add display orientation "
454 "SEI message to access unit.\n");
455 return err;
456 }
457 }
458 }
459
460 return 0;
461 }
462
463 2390 static int h264_metadata_update_fragment(AVBSFContext *bsf, AVPacket *pkt,
464 CodedBitstreamFragment *au)
465 {
466 2390 H264MetadataContext *ctx = bsf->priv_data;
467 int err, i, has_sps, seek_point;
468
469 // If an AUD is present, it must be the first NAL unit.
470
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2390 if (au->nb_units && au->units[0].type == H264_NAL_AUD) {
471
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234 if (ctx->aud == BSF_ELEMENT_REMOVE)
472 39 ff_cbs_delete_unit(au, 0);
473 } else {
474
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2156 if (pkt && ctx->aud == BSF_ELEMENT_INSERT) {
475 err = h264_metadata_insert_aud(bsf, au);
476 if (err < 0)
477 return err;
478 }
479 }
480
481 2390 has_sps = 0;
482
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9143 for (i = 0; i < au->nb_units; i++) {
483
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6753 if (au->units[i].type == H264_NAL_SPS) {
484 42 err = h264_metadata_update_sps(bsf, au->units[i].content);
485
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42 if (err < 0)
486 return err;
487 42 has_sps = 1;
488 }
489 }
490
491
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2390 if (pkt) {
492 // The current packet should be treated as a seek point for metadata
493 // insertion if any of:
494 // - It is the first packet in the stream.
495 // - It contains an SPS, indicating that a sequence might start here.
496 // - It is marked as containing a key frame.
497
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4722 seek_point = !ctx->done_first_au || has_sps ||
498
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2348 (pkt->flags & AV_PKT_FLAG_KEY);
499 } else {
500 16 seek_point = 0;
501 }
502
503
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2390 if (ctx->sei_user_data && seek_point) {
504 err = ff_cbs_sei_add_message(ctx->common.output, au, 1,
505 SEI_TYPE_USER_DATA_UNREGISTERED,
506 &ctx->sei_user_data_payload, NULL);
507 if (err < 0) {
508 av_log(bsf, AV_LOG_ERROR, "Failed to add user data SEI "
509 "message to access unit.\n");
510 return err;
511 }
512 }
513
514
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2390 if (ctx->delete_filler) {
515
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177 for (i = au->nb_units - 1; i >= 0; i--) {
516
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137 if (au->units[i].type == H264_NAL_FILLER_DATA) {
517 33 ff_cbs_delete_unit(au, i);
518 33 continue;
519 }
520 }
521
522 40 ff_cbs_sei_delete_message_type(ctx->common.output, au,
523 SEI_TYPE_FILLER_PAYLOAD);
524 }
525
526
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2390 if (pkt && ctx->display_orientation != BSF_ELEMENT_PASS) {
527 err = h264_metadata_handle_display_orientation(bsf, pkt, au,
528 seek_point);
529 if (err < 0)
530 return err;
531 }
532
533
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2390 if (pkt)
534 2374 ctx->done_first_au = 1;
535
536 2390 return 0;
537 }
538
539 static const CBSBSFType h264_metadata_type = {
540 .codec_id = AV_CODEC_ID_H264,
541 .fragment_name = "access unit",
542 .unit_name = "NAL unit",
543 .update_fragment = &h264_metadata_update_fragment,
544 };
545
546 16 static int h264_metadata_init(AVBSFContext *bsf)
547 {
548 16 H264MetadataContext *ctx = bsf->priv_data;
549
550
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16 if (ctx->sei_user_data) {
551 SEIRawUserDataUnregistered *udu = &ctx->sei_user_data_payload;
552 int i, j;
553
554 // Parse UUID. It must be a hex string of length 32, possibly
555 // containing '-'s between hex digits (which we ignore).
556 for (i = j = 0; j < 32 && i < 64 && ctx->sei_user_data[i]; i++) {
557 int c, v;
558 c = ctx->sei_user_data[i];
559 if (c == '-') {
560 continue;
561 } else if (av_isxdigit(c)) {
562 c = av_tolower(c);
563 v = (c <= '9' ? c - '0' : c - 'a' + 10);
564 } else {
565 break;
566 }
567 if (j & 1)
568 udu->uuid_iso_iec_11578[j / 2] |= v;
569 else
570 udu->uuid_iso_iec_11578[j / 2] = v << 4;
571 ++j;
572 }
573 if (j == 32 && ctx->sei_user_data[i] == '+') {
574 udu->data = (uint8_t*)ctx->sei_user_data + i + 1;
575 udu->data_length = strlen(udu->data) + 1;
576 } else {
577 av_log(bsf, AV_LOG_ERROR, "Invalid user data: "
578 "must be \"UUID+string\".\n");
579 return AVERROR(EINVAL);
580 }
581 }
582
583 16 return ff_cbs_bsf_generic_init(bsf, &h264_metadata_type);
584 }
585
586 #define OFFSET(x) offsetof(H264MetadataContext, x)
587 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM)
588 static const AVOption h264_metadata_options[] = {
589 BSF_ELEMENT_OPTIONS_PIR("aud", "Access Unit Delimiter NAL units",
590 aud, FLAGS),
591
592 { "sample_aspect_ratio", "Set sample aspect ratio (table E-1)",
593 OFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL,
594 { .dbl = 0.0 }, 0, 65535, FLAGS },
595
596 { "overscan_appropriate_flag", "Set VUI overscan appropriate flag",
597 OFFSET(overscan_appropriate_flag), AV_OPT_TYPE_INT,
598 { .i64 = -1 }, -1, 1, FLAGS },
599
600 { "video_format", "Set video format (table E-2)",
601 OFFSET(video_format), AV_OPT_TYPE_INT,
602 { .i64 = -1 }, -1, 7, FLAGS},
603 { "video_full_range_flag", "Set video full range flag",
604 OFFSET(video_full_range_flag), AV_OPT_TYPE_INT,
605 { .i64 = -1 }, -1, 1, FLAGS },
606 { "colour_primaries", "Set colour primaries (table E-3)",
607 OFFSET(colour_primaries), AV_OPT_TYPE_INT,
608 { .i64 = -1 }, -1, 255, FLAGS },
609 { "transfer_characteristics", "Set transfer characteristics (table E-4)",
610 OFFSET(transfer_characteristics), AV_OPT_TYPE_INT,
611 { .i64 = -1 }, -1, 255, FLAGS },
612 { "matrix_coefficients", "Set matrix coefficients (table E-5)",
613 OFFSET(matrix_coefficients), AV_OPT_TYPE_INT,
614 { .i64 = -1 }, -1, 255, FLAGS },
615
616 { "chroma_sample_loc_type", "Set chroma sample location type (figure E-1)",
617 OFFSET(chroma_sample_loc_type), AV_OPT_TYPE_INT,
618 { .i64 = -1 }, -1, 6, FLAGS },
619
620 { "tick_rate", "Set VUI tick rate (num_units_in_tick / time_scale)",
621 OFFSET(tick_rate), AV_OPT_TYPE_RATIONAL,
622 { .dbl = 0.0 }, 0, UINT_MAX, FLAGS },
623 { "fixed_frame_rate_flag", "Set VUI fixed frame rate flag",
624 OFFSET(fixed_frame_rate_flag), AV_OPT_TYPE_INT,
625 { .i64 = -1 }, -1, 1, FLAGS },
626 { "zero_new_constraint_set_flags", "Set constraint_set4_flag / constraint_set5_flag to zero",
627 OFFSET(zero_new_constraint_set_flags), AV_OPT_TYPE_BOOL,
628 { .i64 = 0 }, 0, 1, FLAGS },
629
630 { "crop_left", "Set left border crop offset",
631 OFFSET(crop_left), AV_OPT_TYPE_INT,
632 { .i64 = -1 }, -1, H264_MAX_WIDTH, FLAGS },
633 { "crop_right", "Set right border crop offset",
634 OFFSET(crop_right), AV_OPT_TYPE_INT,
635 { .i64 = -1 }, -1, H264_MAX_WIDTH, FLAGS },
636 { "crop_top", "Set top border crop offset",
637 OFFSET(crop_top), AV_OPT_TYPE_INT,
638 { .i64 = -1 }, -1, H264_MAX_HEIGHT, FLAGS },
639 { "crop_bottom", "Set bottom border crop offset",
640 OFFSET(crop_bottom), AV_OPT_TYPE_INT,
641 { .i64 = -1 }, -1, H264_MAX_HEIGHT, FLAGS },
642
643 { "sei_user_data", "Insert SEI user data (UUID+string)",
644 OFFSET(sei_user_data), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = FLAGS },
645
646 { "delete_filler", "Delete all filler (both NAL and SEI)",
647 OFFSET(delete_filler), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS},
648
649 BSF_ELEMENT_OPTIONS_PIRE("display_orientation",
650 "Display orientation SEI",
651 display_orientation, FLAGS),
652
653 { "rotate", "Set rotation in display orientation SEI (anticlockwise angle in degrees)",
654 OFFSET(rotate), AV_OPT_TYPE_DOUBLE,
655 { .dbl = NAN }, -360.0, +360.0, FLAGS },
656 { "flip", "Set flip in display orientation SEI",
657 OFFSET(flip), AV_OPT_TYPE_FLAGS,
658 { .i64 = 0 }, 0, FLIP_HORIZONTAL | FLIP_VERTICAL, FLAGS, "flip" },
659 { "horizontal", "Set hor_flip",
660 0, AV_OPT_TYPE_CONST,
661 { .i64 = FLIP_HORIZONTAL }, .flags = FLAGS, .unit = "flip" },
662 { "vertical", "Set ver_flip",
663 0, AV_OPT_TYPE_CONST,
664 { .i64 = FLIP_VERTICAL }, .flags = FLAGS, .unit = "flip" },
665
666 { "level", "Set level (table A-1)",
667 OFFSET(level), AV_OPT_TYPE_INT,
668 { .i64 = LEVEL_UNSET }, LEVEL_UNSET, 0xff, FLAGS, "level" },
669 { "auto", "Attempt to guess level from stream properties",
670 0, AV_OPT_TYPE_CONST,
671 { .i64 = LEVEL_AUTO }, .flags = FLAGS, .unit = "level" },
672 #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
673 { .i64 = value }, .flags = FLAGS, .unit = "level"
674 { LEVEL("1", 10) },
675 { LEVEL("1b", 9) },
676 { LEVEL("1.1", 11) },
677 { LEVEL("1.2", 12) },
678 { LEVEL("1.3", 13) },
679 { LEVEL("2", 20) },
680 { LEVEL("2.1", 21) },
681 { LEVEL("2.2", 22) },
682 { LEVEL("3", 30) },
683 { LEVEL("3.1", 31) },
684 { LEVEL("3.2", 32) },
685 { LEVEL("4", 40) },
686 { LEVEL("4.1", 41) },
687 { LEVEL("4.2", 42) },
688 { LEVEL("5", 50) },
689 { LEVEL("5.1", 51) },
690 { LEVEL("5.2", 52) },
691 { LEVEL("6", 60) },
692 { LEVEL("6.1", 61) },
693 { LEVEL("6.2", 62) },
694 #undef LEVEL
695
696 { NULL }
697 };
698
699 static const AVClass h264_metadata_class = {
700 .class_name = "h264_metadata_bsf",
701 .item_name = av_default_item_name,
702 .option = h264_metadata_options,
703 .version = LIBAVUTIL_VERSION_INT,
704 };
705
706 static const enum AVCodecID h264_metadata_codec_ids[] = {
707 AV_CODEC_ID_H264, AV_CODEC_ID_NONE,
708 };
709
710 const AVBitStreamFilter ff_h264_metadata_bsf = {
711 .name = "h264_metadata",
712 .priv_data_size = sizeof(H264MetadataContext),
713 .priv_class = &h264_metadata_class,
714 .init = &h264_metadata_init,
715 .close = &ff_cbs_bsf_generic_close,
716 .filter = &ff_cbs_bsf_generic_filter,
717 .codec_ids = h264_metadata_codec_ids,
718 };
719