2 * This file is part of FFmpeg.
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.
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.
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
19 #include "libavutil/avstring.h"
20 #include "libavutil/display.h"
21 #include "libavutil/common.h"
22 #include "libavutil/opt.h"
28 #include "h264_levels.h"
48 typedef struct H264MetadataContext {
51 CodedBitstreamContext *cbc;
52 CodedBitstreamFragment access_unit;
58 AVRational sample_aspect_ratio;
61 int video_full_range_flag;
63 int transfer_characteristics;
64 int matrix_coefficients;
66 int chroma_sample_loc_type;
69 int fixed_frame_rate_flag;
76 const char *sei_user_data;
80 int display_orientation;
85 } H264MetadataContext;
88 static int h264_metadata_update_sps(AVBSFContext *bsf,
91 H264MetadataContext *ctx = bsf->priv_data;
93 int crop_unit_x, crop_unit_y;
95 if (ctx->sample_aspect_ratio.num && ctx->sample_aspect_ratio.den) {
97 static const AVRational sar_idc[] = {
98 { 0, 0 }, // Unspecified (never written here).
99 { 1, 1 }, { 12, 11 }, { 10, 11 }, { 16, 11 },
100 { 40, 33 }, { 24, 11 }, { 20, 11 }, { 32, 11 },
101 { 80, 33 }, { 18, 11 }, { 15, 11 }, { 64, 33 },
102 { 160, 99 }, { 4, 3 }, { 3, 2 }, { 2, 1 },
106 av_reduce(&num, &den, ctx->sample_aspect_ratio.num,
107 ctx->sample_aspect_ratio.den, 65535);
109 for (i = 1; i < FF_ARRAY_ELEMS(sar_idc); i++) {
110 if (num == sar_idc[i].num &&
111 den == sar_idc[i].den)
114 if (i == FF_ARRAY_ELEMS(sar_idc)) {
115 sps->vui.aspect_ratio_idc = 255;
116 sps->vui.sar_width = num;
117 sps->vui.sar_height = den;
119 sps->vui.aspect_ratio_idc = i;
121 sps->vui.aspect_ratio_info_present_flag = 1;
125 #define SET_OR_INFER(field, value, present_flag, infer) do { \
129 } else if (!present_flag) \
133 if (ctx->video_format >= 0 ||
134 ctx->video_full_range_flag >= 0 ||
135 ctx->colour_primaries >= 0 ||
136 ctx->transfer_characteristics >= 0 ||
137 ctx->matrix_coefficients >= 0) {
139 SET_OR_INFER(sps->vui.video_format, ctx->video_format,
140 sps->vui.video_signal_type_present_flag, 5);
142 SET_OR_INFER(sps->vui.video_full_range_flag,
143 ctx->video_full_range_flag,
144 sps->vui.video_signal_type_present_flag, 0);
146 if (ctx->colour_primaries >= 0 ||
147 ctx->transfer_characteristics >= 0 ||
148 ctx->matrix_coefficients >= 0) {
150 SET_OR_INFER(sps->vui.colour_primaries,
151 ctx->colour_primaries,
152 sps->vui.colour_description_present_flag, 2);
154 SET_OR_INFER(sps->vui.transfer_characteristics,
155 ctx->transfer_characteristics,
156 sps->vui.colour_description_present_flag, 2);
158 SET_OR_INFER(sps->vui.matrix_coefficients,
159 ctx->matrix_coefficients,
160 sps->vui.colour_description_present_flag, 2);
162 sps->vui.colour_description_present_flag = 1;
164 sps->vui.video_signal_type_present_flag = 1;
168 if (ctx->chroma_sample_loc_type >= 0) {
169 sps->vui.chroma_sample_loc_type_top_field =
170 ctx->chroma_sample_loc_type;
171 sps->vui.chroma_sample_loc_type_bottom_field =
172 ctx->chroma_sample_loc_type;
173 sps->vui.chroma_loc_info_present_flag = 1;
177 if (ctx->tick_rate.num && ctx->tick_rate.den) {
180 av_reduce(&num, &den, ctx->tick_rate.num, ctx->tick_rate.den,
181 UINT32_MAX > INT_MAX ? UINT32_MAX : INT_MAX);
183 sps->vui.time_scale = num;
184 sps->vui.num_units_in_tick = den;
186 sps->vui.timing_info_present_flag = 1;
189 SET_OR_INFER(sps->vui.fixed_frame_rate_flag,
190 ctx->fixed_frame_rate_flag,
191 sps->vui.timing_info_present_flag, 0);
193 if (sps->separate_colour_plane_flag || sps->chroma_format_idc == 0) {
195 crop_unit_y = 2 - sps->frame_mbs_only_flag;
197 crop_unit_x = 1 + (sps->chroma_format_idc < 3);
198 crop_unit_y = (1 + (sps->chroma_format_idc < 2)) *
199 (2 - sps->frame_mbs_only_flag);
201 #define CROP(border, unit) do { \
202 if (ctx->crop_ ## border >= 0) { \
203 if (ctx->crop_ ## border % unit != 0) { \
204 av_log(bsf, AV_LOG_ERROR, "Invalid value for crop_%s: " \
205 "must be a multiple of %d.\n", #border, unit); \
206 return AVERROR(EINVAL); \
208 sps->frame_crop_ ## border ## _offset = \
209 ctx->crop_ ## border / unit; \
210 sps->frame_cropping_flag = 1; \
213 CROP(left, crop_unit_x);
214 CROP(right, crop_unit_x);
215 CROP(top, crop_unit_y);
216 CROP(bottom, crop_unit_y);
219 if (ctx->level != LEVEL_UNSET) {
222 if (ctx->level == LEVEL_AUTO) {
223 const H264LevelDescriptor *desc;
225 int width, height, dpb_frames;
228 if (sps->vui.nal_hrd_parameters_present_flag) {
229 bit_rate = (sps->vui.nal_hrd_parameters.bit_rate_value_minus1[0] + 1) *
230 (INT64_C(1) << (sps->vui.nal_hrd_parameters.bit_rate_scale + 6));
231 } else if (sps->vui.vcl_hrd_parameters_present_flag) {
232 bit_rate = (sps->vui.vcl_hrd_parameters.bit_rate_value_minus1[0] + 1) *
233 (INT64_C(1) << (sps->vui.vcl_hrd_parameters.bit_rate_scale + 6));
234 // Adjust for VCL vs. NAL limits.
235 bit_rate = bit_rate * 6 / 5;
240 // Don't use max_dec_frame_buffering if it is only inferred.
241 dpb_frames = sps->vui.bitstream_restriction_flag ?
242 sps->vui.max_dec_frame_buffering : H264_MAX_DPB_FRAMES;
244 width = 16 * (sps->pic_width_in_mbs_minus1 + 1);
245 height = 16 * (sps->pic_height_in_map_units_minus1 + 1) *
246 (2 - sps->frame_mbs_only_flag);
248 if (sps->vui.timing_info_present_flag)
249 framerate = sps->vui.time_scale / sps->vui.num_units_in_tick / 2;
253 desc = ff_h264_guess_level(sps->profile_idc, bit_rate, framerate,
254 width, height, dpb_frames);
256 level_idc = desc->level_idc;
258 av_log(bsf, AV_LOG_WARNING, "Stream does not appear to "
259 "conform to any level: using level 6.2.\n");
263 level_idc = ctx->level;
266 if (level_idc == 9) {
267 if (sps->profile_idc == 66 ||
268 sps->profile_idc == 77 ||
269 sps->profile_idc == 88) {
271 sps->constraint_set3_flag = 1;
276 sps->level_idc = level_idc;
281 sps->vui_parameters_present_flag = 1;
286 static int h264_metadata_filter(AVBSFContext *bsf, AVPacket *pkt)
288 H264MetadataContext *ctx = bsf->priv_data;
289 CodedBitstreamFragment *au = &ctx->access_unit;
290 int err, i, j, has_sps;
292 uint8_t *displaymatrix_side_data = NULL;
293 size_t displaymatrix_side_data_size = 0;
295 err = ff_bsf_get_packet_ref(bsf, pkt);
299 err = ff_cbs_read_packet(ctx->cbc, au, pkt);
301 av_log(bsf, AV_LOG_ERROR, "Failed to read packet.\n");
305 if (au->nb_units == 0) {
306 av_log(bsf, AV_LOG_ERROR, "No NAL units in packet.\n");
307 err = AVERROR_INVALIDDATA;
311 // If an AUD is present, it must be the first NAL unit.
312 if (au->units[0].type == H264_NAL_AUD) {
313 if (ctx->aud == REMOVE)
314 ff_cbs_delete_unit(ctx->cbc, au, 0);
316 if (ctx->aud == INSERT) {
317 static const int primary_pic_type_table[] = {
320 0x0e7, // 0, 1, 2, 5, 6, 7
324 0x3bd, // 0, 2, 3, 4, 5, 7, 8, 9
325 0x3ff, // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
327 int primary_pic_type_mask = 0xff;
329 for (i = 0; i < au->nb_units; i++) {
330 if (au->units[i].type == H264_NAL_SLICE ||
331 au->units[i].type == H264_NAL_IDR_SLICE) {
332 H264RawSlice *slice = au->units[i].content;
333 for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++) {
334 if (!(primary_pic_type_table[j] &
335 (1 << slice->header.slice_type)))
336 primary_pic_type_mask &= ~(1 << j);
340 for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++)
341 if (primary_pic_type_mask & (1 << j))
343 if (j >= FF_ARRAY_ELEMS(primary_pic_type_table)) {
344 av_log(bsf, AV_LOG_ERROR, "No usable primary_pic_type: "
345 "invalid slice types?\n");
346 err = AVERROR_INVALIDDATA;
351 .nal_unit_header.nal_unit_type = H264_NAL_AUD,
352 .primary_pic_type = j,
355 err = ff_cbs_insert_unit_content(ctx->cbc, au,
356 0, H264_NAL_AUD, &aud, NULL);
358 av_log(bsf, AV_LOG_ERROR, "Failed to insert AUD.\n");
365 for (i = 0; i < au->nb_units; i++) {
366 if (au->units[i].type == H264_NAL_SPS) {
367 err = h264_metadata_update_sps(bsf, au->units[i].content);
374 // Only insert the SEI in access units containing SPSs, and also
375 // unconditionally in the first access unit we ever see.
376 if (ctx->sei_user_data && (has_sps || !ctx->done_first_au)) {
377 H264RawSEIPayload payload = {
378 .payload_type = H264_SEI_TYPE_USER_DATA_UNREGISTERED,
380 H264RawSEIUserDataUnregistered *udu =
381 &payload.payload.user_data_unregistered;
383 for (i = j = 0; j < 32 && ctx->sei_user_data[i]; i++) {
385 c = ctx->sei_user_data[i];
388 } else if (av_isxdigit(c)) {
390 v = (c <= '9' ? c - '0' : c - 'a' + 10);
392 goto invalid_user_data;
395 udu->uuid_iso_iec_11578[j / 2] |= v;
397 udu->uuid_iso_iec_11578[j / 2] = v << 4;
400 if (j == 32 && ctx->sei_user_data[i] == '+') {
401 size_t len = strlen(ctx->sei_user_data + i + 1);
403 udu->data_ref = av_buffer_alloc(len + 1);
404 if (!udu->data_ref) {
405 err = AVERROR(ENOMEM);
409 udu->data = udu->data_ref->data;
410 udu->data_length = len + 1;
411 memcpy(udu->data, ctx->sei_user_data + i + 1, len + 1);
413 err = ff_cbs_h264_add_sei_message(ctx->cbc, au, &payload);
415 av_log(bsf, AV_LOG_ERROR, "Failed to add user data SEI "
416 "message to access unit.\n");
422 av_log(bsf, AV_LOG_ERROR, "Invalid user data: "
423 "must be \"UUID+string\".\n");
424 err = AVERROR(EINVAL);
429 if (ctx->delete_filler) {
430 for (i = au->nb_units - 1; i >= 0; i--) {
431 if (au->units[i].type == H264_NAL_FILLER_DATA) {
433 err = ff_cbs_delete_unit(ctx->cbc, au, i);
435 av_log(bsf, AV_LOG_ERROR, "Failed to delete "
442 if (au->units[i].type == H264_NAL_SEI) {
443 // Filler SEI messages.
444 H264RawSEI *sei = au->units[i].content;
446 for (j = sei->payload_count - 1; j >= 0; j--) {
447 if (sei->payload[j].payload_type ==
448 H264_SEI_TYPE_FILLER_PAYLOAD) {
449 err = ff_cbs_h264_delete_sei_message(ctx->cbc, au,
452 av_log(bsf, AV_LOG_ERROR, "Failed to delete "
453 "filler SEI message.\n");
462 if (ctx->display_orientation != PASS) {
463 for (i = au->nb_units - 1; i >= 0; i--) {
465 if (au->units[i].type != H264_NAL_SEI)
467 sei = au->units[i].content;
469 for (j = sei->payload_count - 1; j >= 0; j--) {
470 H264RawSEIDisplayOrientation *disp;
473 if (sei->payload[j].payload_type !=
474 H264_SEI_TYPE_DISPLAY_ORIENTATION)
476 disp = &sei->payload[j].payload.display_orientation;
478 if (ctx->display_orientation == REMOVE ||
479 ctx->display_orientation == INSERT) {
480 err = ff_cbs_h264_delete_sei_message(ctx->cbc, au,
483 av_log(bsf, AV_LOG_ERROR, "Failed to delete "
484 "display orientation SEI message.\n");
490 matrix = av_mallocz(9 * sizeof(int32_t));
492 err = AVERROR(ENOMEM);
496 av_display_rotation_set(matrix,
497 disp->anticlockwise_rotation *
499 av_display_matrix_flip(matrix, disp->hor_flip, disp->ver_flip);
501 // If there are multiple display orientation messages in an
502 // access unit then ignore all but the first one.
503 av_freep(&displaymatrix_side_data);
505 displaymatrix_side_data = (uint8_t*)matrix;
506 displaymatrix_side_data_size = 9 * sizeof(int32_t);
510 if (ctx->display_orientation == INSERT) {
511 H264RawSEIPayload payload = {
512 .payload_type = H264_SEI_TYPE_DISPLAY_ORIENTATION,
514 H264RawSEIDisplayOrientation *disp =
515 &payload.payload.display_orientation;
520 data = av_packet_get_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX, &size);
521 if (data && size >= 9 * sizeof(int32_t)) {
526 memcpy(matrix, data, sizeof(matrix));
529 if (matrix[0] < 0 && matrix[4] > 0)
531 else if (matrix[0] > 0 && matrix[4] < 0)
533 av_display_matrix_flip(matrix, hflip, vflip);
535 angle = av_display_rotation_get(matrix);
537 if (!(angle >= -180.0 && angle <= 180.0 /* also excludes NaN */) ||
538 matrix[2] != 0 || matrix[5] != 0 ||
539 matrix[6] != 0 || matrix[7] != 0) {
540 av_log(bsf, AV_LOG_WARNING, "Input display matrix is not "
541 "representable in H.264 parameters.\n");
543 disp->hor_flip = hflip;
544 disp->ver_flip = vflip;
545 disp->anticlockwise_rotation =
546 (uint16_t)rint((angle >= 0.0 ? angle
553 if (has_sps || !ctx->done_first_au) {
554 if (!isnan(ctx->rotate)) {
555 disp->anticlockwise_rotation =
556 (uint16_t)rint((ctx->rotate >= 0.0 ? ctx->rotate
557 : ctx->rotate + 360.0) *
562 disp->hor_flip = !!(ctx->flip & FLIP_HORIZONTAL);
563 disp->ver_flip = !!(ctx->flip & FLIP_VERTICAL);
569 disp->display_orientation_repetition_period = 1;
571 err = ff_cbs_h264_add_sei_message(ctx->cbc, au, &payload);
573 av_log(bsf, AV_LOG_ERROR, "Failed to add display orientation "
574 "SEI message to access unit.\n");
580 err = ff_cbs_write_packet(ctx->cbc, pkt, au);
582 av_log(bsf, AV_LOG_ERROR, "Failed to write packet.\n");
586 if (displaymatrix_side_data) {
587 err = av_packet_add_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX,
588 displaymatrix_side_data,
589 displaymatrix_side_data_size);
591 av_log(bsf, AV_LOG_ERROR, "Failed to attach extracted "
592 "displaymatrix side data to packet.\n");
595 displaymatrix_side_data = NULL;
598 ctx->done_first_au = 1;
602 ff_cbs_fragment_reset(ctx->cbc, au);
603 av_freep(&displaymatrix_side_data);
606 av_packet_unref(pkt);
611 static int h264_metadata_init(AVBSFContext *bsf)
613 H264MetadataContext *ctx = bsf->priv_data;
614 CodedBitstreamFragment *au = &ctx->access_unit;
617 err = ff_cbs_init(&ctx->cbc, AV_CODEC_ID_H264, bsf);
621 if (bsf->par_in->extradata) {
622 err = ff_cbs_read_extradata(ctx->cbc, au, bsf->par_in);
624 av_log(bsf, AV_LOG_ERROR, "Failed to read extradata.\n");
628 for (i = 0; i < au->nb_units; i++) {
629 if (au->units[i].type == H264_NAL_SPS) {
630 err = h264_metadata_update_sps(bsf, au->units[i].content);
636 err = ff_cbs_write_extradata(ctx->cbc, bsf->par_out, au);
638 av_log(bsf, AV_LOG_ERROR, "Failed to write extradata.\n");
645 ff_cbs_fragment_reset(ctx->cbc, au);
649 static void h264_metadata_close(AVBSFContext *bsf)
651 H264MetadataContext *ctx = bsf->priv_data;
653 ff_cbs_fragment_free(ctx->cbc, &ctx->access_unit);
654 ff_cbs_close(&ctx->cbc);
657 #define OFFSET(x) offsetof(H264MetadataContext, x)
658 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM)
659 static const AVOption h264_metadata_options[] = {
660 { "aud", "Access Unit Delimiter NAL units",
661 OFFSET(aud), AV_OPT_TYPE_INT,
662 { .i64 = PASS }, PASS, REMOVE, FLAGS, "aud" },
663 { "pass", NULL, 0, AV_OPT_TYPE_CONST,
664 { .i64 = PASS }, .flags = FLAGS, .unit = "aud" },
665 { "insert", NULL, 0, AV_OPT_TYPE_CONST,
666 { .i64 = INSERT }, .flags = FLAGS, .unit = "aud" },
667 { "remove", NULL, 0, AV_OPT_TYPE_CONST,
668 { .i64 = REMOVE }, .flags = FLAGS, .unit = "aud" },
670 { "sample_aspect_ratio", "Set sample aspect ratio (table E-1)",
671 OFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL,
672 { .dbl = 0.0 }, 0, 65535, FLAGS },
674 { "video_format", "Set video format (table E-2)",
675 OFFSET(video_format), AV_OPT_TYPE_INT,
676 { .i64 = -1 }, -1, 7, FLAGS},
677 { "video_full_range_flag", "Set video full range flag",
678 OFFSET(video_full_range_flag), AV_OPT_TYPE_INT,
679 { .i64 = -1 }, -1, 1, FLAGS },
680 { "colour_primaries", "Set colour primaries (table E-3)",
681 OFFSET(colour_primaries), AV_OPT_TYPE_INT,
682 { .i64 = -1 }, -1, 255, FLAGS },
683 { "transfer_characteristics", "Set transfer characteristics (table E-4)",
684 OFFSET(transfer_characteristics), AV_OPT_TYPE_INT,
685 { .i64 = -1 }, -1, 255, FLAGS },
686 { "matrix_coefficients", "Set matrix coefficients (table E-5)",
687 OFFSET(matrix_coefficients), AV_OPT_TYPE_INT,
688 { .i64 = -1 }, -1, 255, FLAGS },
690 { "chroma_sample_loc_type", "Set chroma sample location type (figure E-1)",
691 OFFSET(chroma_sample_loc_type), AV_OPT_TYPE_INT,
692 { .i64 = -1 }, -1, 6, FLAGS },
694 { "tick_rate", "Set VUI tick rate (num_units_in_tick / time_scale)",
695 OFFSET(tick_rate), AV_OPT_TYPE_RATIONAL,
696 { .dbl = 0.0 }, 0, UINT_MAX, FLAGS },
697 { "fixed_frame_rate_flag", "Set VUI fixed frame rate flag",
698 OFFSET(fixed_frame_rate_flag), AV_OPT_TYPE_INT,
699 { .i64 = -1 }, -1, 1, FLAGS },
701 { "crop_left", "Set left border crop offset",
702 OFFSET(crop_left), AV_OPT_TYPE_INT,
703 { .i64 = -1 }, -1, H264_MAX_WIDTH, FLAGS },
704 { "crop_right", "Set right border crop offset",
705 OFFSET(crop_right), AV_OPT_TYPE_INT,
706 { .i64 = -1 }, -1, H264_MAX_WIDTH, FLAGS },
707 { "crop_top", "Set top border crop offset",
708 OFFSET(crop_top), AV_OPT_TYPE_INT,
709 { .i64 = -1 }, -1, H264_MAX_HEIGHT, FLAGS },
710 { "crop_bottom", "Set bottom border crop offset",
711 OFFSET(crop_bottom), AV_OPT_TYPE_INT,
712 { .i64 = -1 }, -1, H264_MAX_HEIGHT, FLAGS },
714 { "sei_user_data", "Insert SEI user data (UUID+string)",
715 OFFSET(sei_user_data), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = FLAGS },
717 { "delete_filler", "Delete all filler (both NAL and SEI)",
718 OFFSET(delete_filler), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS},
720 { "display_orientation", "Display orientation SEI",
721 OFFSET(display_orientation), AV_OPT_TYPE_INT,
722 { .i64 = PASS }, PASS, EXTRACT, FLAGS, "disp_or" },
723 { "pass", NULL, 0, AV_OPT_TYPE_CONST,
724 { .i64 = PASS }, .flags = FLAGS, .unit = "disp_or" },
725 { "insert", NULL, 0, AV_OPT_TYPE_CONST,
726 { .i64 = INSERT }, .flags = FLAGS, .unit = "disp_or" },
727 { "remove", NULL, 0, AV_OPT_TYPE_CONST,
728 { .i64 = REMOVE }, .flags = FLAGS, .unit = "disp_or" },
729 { "extract", NULL, 0, AV_OPT_TYPE_CONST,
730 { .i64 = EXTRACT }, .flags = FLAGS, .unit = "disp_or" },
732 { "rotate", "Set rotation in display orientation SEI (anticlockwise angle in degrees)",
733 OFFSET(rotate), AV_OPT_TYPE_DOUBLE,
734 { .dbl = NAN }, -360.0, +360.0, FLAGS },
735 { "flip", "Set flip in display orientation SEI",
736 OFFSET(flip), AV_OPT_TYPE_FLAGS,
737 { .i64 = 0 }, 0, FLIP_HORIZONTAL | FLIP_VERTICAL, FLAGS, "flip" },
738 { "horizontal", "Set hor_flip",
739 0, AV_OPT_TYPE_CONST,
740 { .i64 = FLIP_HORIZONTAL }, .flags = FLAGS, .unit = "flip" },
741 { "vertical", "Set ver_flip",
742 0, AV_OPT_TYPE_CONST,
743 { .i64 = FLIP_VERTICAL }, .flags = FLAGS, .unit = "flip" },
745 { "level", "Set level (table A-1)",
746 OFFSET(level), AV_OPT_TYPE_INT,
747 { .i64 = LEVEL_UNSET }, LEVEL_UNSET, 0xff, FLAGS, "level" },
748 { "auto", "Attempt to guess level from stream properties",
749 0, AV_OPT_TYPE_CONST,
750 { .i64 = LEVEL_AUTO }, .flags = FLAGS, .unit = "level" },
751 #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
752 { .i64 = value }, .flags = FLAGS, .unit = "level"
755 { LEVEL("1.1", 11) },
756 { LEVEL("1.2", 12) },
757 { LEVEL("1.3", 13) },
759 { LEVEL("2.1", 21) },
760 { LEVEL("2.2", 22) },
762 { LEVEL("3.1", 31) },
763 { LEVEL("3.2", 32) },
765 { LEVEL("4.1", 41) },
766 { LEVEL("4.2", 42) },
768 { LEVEL("5.1", 51) },
769 { LEVEL("5.2", 52) },
771 { LEVEL("6.1", 61) },
772 { LEVEL("6.2", 62) },
778 static const AVClass h264_metadata_class = {
779 .class_name = "h264_metadata_bsf",
780 .item_name = av_default_item_name,
781 .option = h264_metadata_options,
782 .version = LIBAVUTIL_VERSION_INT,
785 static const enum AVCodecID h264_metadata_codec_ids[] = {
786 AV_CODEC_ID_H264, AV_CODEC_ID_NONE,
789 const AVBitStreamFilter ff_h264_metadata_bsf = {
790 .name = "h264_metadata",
791 .priv_data_size = sizeof(H264MetadataContext),
792 .priv_class = &h264_metadata_class,
793 .init = &h264_metadata_init,
794 .close = &h264_metadata_close,
795 .filter = &h264_metadata_filter,
796 .codec_ids = h264_metadata_codec_ids,