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"
25 #include "bsf_internal.h"
29 #include "h264_levels.h"
49 typedef struct H264MetadataContext {
52 CodedBitstreamContext *input;
53 CodedBitstreamContext *output;
54 CodedBitstreamFragment access_unit;
60 AVRational sample_aspect_ratio;
62 int overscan_appropriate_flag;
65 int video_full_range_flag;
67 int transfer_characteristics;
68 int matrix_coefficients;
70 int chroma_sample_loc_type;
73 int fixed_frame_rate_flag;
80 const char *sei_user_data;
84 int display_orientation;
89 } H264MetadataContext;
92 static int h264_metadata_update_sps(AVBSFContext *bsf,
95 H264MetadataContext *ctx = bsf->priv_data;
97 int crop_unit_x, crop_unit_y;
99 if (ctx->sample_aspect_ratio.num && ctx->sample_aspect_ratio.den) {
101 static const AVRational sar_idc[] = {
102 { 0, 0 }, // Unspecified (never written here).
103 { 1, 1 }, { 12, 11 }, { 10, 11 }, { 16, 11 },
104 { 40, 33 }, { 24, 11 }, { 20, 11 }, { 32, 11 },
105 { 80, 33 }, { 18, 11 }, { 15, 11 }, { 64, 33 },
106 { 160, 99 }, { 4, 3 }, { 3, 2 }, { 2, 1 },
110 av_reduce(&num, &den, ctx->sample_aspect_ratio.num,
111 ctx->sample_aspect_ratio.den, 65535);
113 for (i = 1; i < FF_ARRAY_ELEMS(sar_idc); i++) {
114 if (num == sar_idc[i].num &&
115 den == sar_idc[i].den)
118 if (i == FF_ARRAY_ELEMS(sar_idc)) {
119 sps->vui.aspect_ratio_idc = 255;
120 sps->vui.sar_width = num;
121 sps->vui.sar_height = den;
123 sps->vui.aspect_ratio_idc = i;
125 sps->vui.aspect_ratio_info_present_flag = 1;
129 #define SET_VUI_FIELD(field) do { \
130 if (ctx->field >= 0) { \
131 sps->vui.field = ctx->field; \
136 if (ctx->overscan_appropriate_flag >= 0) {
137 SET_VUI_FIELD(overscan_appropriate_flag);
138 sps->vui.overscan_info_present_flag = 1;
141 if (ctx->video_format >= 0 ||
142 ctx->video_full_range_flag >= 0 ||
143 ctx->colour_primaries >= 0 ||
144 ctx->transfer_characteristics >= 0 ||
145 ctx->matrix_coefficients >= 0) {
147 SET_VUI_FIELD(video_format);
149 SET_VUI_FIELD(video_full_range_flag);
151 if (ctx->colour_primaries >= 0 ||
152 ctx->transfer_characteristics >= 0 ||
153 ctx->matrix_coefficients >= 0) {
155 SET_VUI_FIELD(colour_primaries);
156 SET_VUI_FIELD(transfer_characteristics);
157 SET_VUI_FIELD(matrix_coefficients);
159 sps->vui.colour_description_present_flag = 1;
161 sps->vui.video_signal_type_present_flag = 1;
164 if (ctx->chroma_sample_loc_type >= 0) {
165 sps->vui.chroma_sample_loc_type_top_field =
166 ctx->chroma_sample_loc_type;
167 sps->vui.chroma_sample_loc_type_bottom_field =
168 ctx->chroma_sample_loc_type;
169 sps->vui.chroma_loc_info_present_flag = 1;
173 if (ctx->tick_rate.num && ctx->tick_rate.den) {
176 av_reduce(&num, &den, ctx->tick_rate.num, ctx->tick_rate.den,
177 UINT32_MAX > INT_MAX ? UINT32_MAX : INT_MAX);
179 sps->vui.time_scale = num;
180 sps->vui.num_units_in_tick = den;
182 sps->vui.timing_info_present_flag = 1;
185 SET_VUI_FIELD(fixed_frame_rate_flag);
187 if (sps->separate_colour_plane_flag || sps->chroma_format_idc == 0) {
189 crop_unit_y = 2 - sps->frame_mbs_only_flag;
191 crop_unit_x = 1 + (sps->chroma_format_idc < 3);
192 crop_unit_y = (1 + (sps->chroma_format_idc < 2)) *
193 (2 - sps->frame_mbs_only_flag);
195 #define CROP(border, unit) do { \
196 if (ctx->crop_ ## border >= 0) { \
197 if (ctx->crop_ ## border % unit != 0) { \
198 av_log(bsf, AV_LOG_ERROR, "Invalid value for crop_%s: " \
199 "must be a multiple of %d.\n", #border, unit); \
200 return AVERROR(EINVAL); \
202 sps->frame_crop_ ## border ## _offset = \
203 ctx->crop_ ## border / unit; \
204 sps->frame_cropping_flag = 1; \
207 CROP(left, crop_unit_x);
208 CROP(right, crop_unit_x);
209 CROP(top, crop_unit_y);
210 CROP(bottom, crop_unit_y);
213 if (ctx->level != LEVEL_UNSET) {
216 if (ctx->level == LEVEL_AUTO) {
217 const H264LevelDescriptor *desc;
219 int width, height, dpb_frames;
222 if (sps->vui.nal_hrd_parameters_present_flag) {
223 bit_rate = (sps->vui.nal_hrd_parameters.bit_rate_value_minus1[0] + 1) *
224 (INT64_C(1) << (sps->vui.nal_hrd_parameters.bit_rate_scale + 6));
225 } else if (sps->vui.vcl_hrd_parameters_present_flag) {
226 bit_rate = (sps->vui.vcl_hrd_parameters.bit_rate_value_minus1[0] + 1) *
227 (INT64_C(1) << (sps->vui.vcl_hrd_parameters.bit_rate_scale + 6));
228 // Adjust for VCL vs. NAL limits.
229 bit_rate = bit_rate * 6 / 5;
234 // Don't use max_dec_frame_buffering if it is only inferred.
235 dpb_frames = sps->vui.bitstream_restriction_flag ?
236 sps->vui.max_dec_frame_buffering : H264_MAX_DPB_FRAMES;
238 width = 16 * (sps->pic_width_in_mbs_minus1 + 1);
239 height = 16 * (sps->pic_height_in_map_units_minus1 + 1) *
240 (2 - sps->frame_mbs_only_flag);
242 if (sps->vui.timing_info_present_flag)
243 framerate = sps->vui.time_scale / sps->vui.num_units_in_tick / 2;
247 desc = ff_h264_guess_level(sps->profile_idc, bit_rate, framerate,
248 width, height, dpb_frames);
250 level_idc = desc->level_idc;
252 av_log(bsf, AV_LOG_WARNING, "Stream does not appear to "
253 "conform to any level: using level 6.2.\n");
257 level_idc = ctx->level;
260 if (level_idc == 9) {
261 if (sps->profile_idc == 66 ||
262 sps->profile_idc == 77 ||
263 sps->profile_idc == 88) {
265 sps->constraint_set3_flag = 1;
270 sps->level_idc = level_idc;
275 sps->vui_parameters_present_flag = 1;
280 static int h264_metadata_update_side_data(AVBSFContext *bsf, AVPacket *pkt)
282 H264MetadataContext *ctx = bsf->priv_data;
283 CodedBitstreamFragment *au = &ctx->access_unit;
288 side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA,
293 err = ff_cbs_read(ctx->input, au, side_data, side_data_size);
295 av_log(bsf, AV_LOG_ERROR, "Failed to read extradata from packet side data.\n");
299 for (i = 0; i < au->nb_units; i++) {
300 if (au->units[i].type == H264_NAL_SPS) {
301 err = h264_metadata_update_sps(bsf, au->units[i].content);
307 err = ff_cbs_write_fragment_data(ctx->output, au);
309 av_log(bsf, AV_LOG_ERROR, "Failed to write extradata into packet side data.\n");
313 side_data = av_packet_new_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, au->data_size);
315 return AVERROR(ENOMEM);
316 memcpy(side_data, au->data, au->data_size);
318 ff_cbs_fragment_reset(au);
323 static int h264_metadata_filter(AVBSFContext *bsf, AVPacket *pkt)
325 H264MetadataContext *ctx = bsf->priv_data;
326 CodedBitstreamFragment *au = &ctx->access_unit;
327 int err, i, j, has_sps;
330 err = ff_bsf_get_packet_ref(bsf, pkt);
334 err = h264_metadata_update_side_data(bsf, pkt);
338 err = ff_cbs_read_packet(ctx->input, au, pkt);
340 av_log(bsf, AV_LOG_ERROR, "Failed to read packet.\n");
344 if (au->nb_units == 0) {
345 av_log(bsf, AV_LOG_ERROR, "No NAL units in packet.\n");
346 err = AVERROR_INVALIDDATA;
350 // If an AUD is present, it must be the first NAL unit.
351 if (au->units[0].type == H264_NAL_AUD) {
352 if (ctx->aud == REMOVE)
353 ff_cbs_delete_unit(au, 0);
355 if (ctx->aud == INSERT) {
356 static const int primary_pic_type_table[] = {
359 0x0e7, // 0, 1, 2, 5, 6, 7
363 0x3bd, // 0, 2, 3, 4, 5, 7, 8, 9
364 0x3ff, // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
366 int primary_pic_type_mask = 0xff;
368 for (i = 0; i < au->nb_units; i++) {
369 if (au->units[i].type == H264_NAL_SLICE ||
370 au->units[i].type == H264_NAL_IDR_SLICE) {
371 H264RawSlice *slice = au->units[i].content;
372 for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++) {
373 if (!(primary_pic_type_table[j] &
374 (1 << slice->header.slice_type)))
375 primary_pic_type_mask &= ~(1 << j);
379 for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++)
380 if (primary_pic_type_mask & (1 << j))
382 if (j >= FF_ARRAY_ELEMS(primary_pic_type_table)) {
383 av_log(bsf, AV_LOG_ERROR, "No usable primary_pic_type: "
384 "invalid slice types?\n");
385 err = AVERROR_INVALIDDATA;
390 .nal_unit_header.nal_unit_type = H264_NAL_AUD,
391 .primary_pic_type = j,
394 err = ff_cbs_insert_unit_content(au,
395 0, H264_NAL_AUD, &aud, NULL);
397 av_log(bsf, AV_LOG_ERROR, "Failed to insert AUD.\n");
404 for (i = 0; i < au->nb_units; i++) {
405 if (au->units[i].type == H264_NAL_SPS) {
406 err = h264_metadata_update_sps(bsf, au->units[i].content);
413 // Only insert the SEI in access units containing SPSs, and also
414 // unconditionally in the first access unit we ever see.
415 if (ctx->sei_user_data && (has_sps || !ctx->done_first_au)) {
416 H264RawSEIPayload payload = {
417 .payload_type = H264_SEI_TYPE_USER_DATA_UNREGISTERED,
419 H264RawSEIUserDataUnregistered *udu =
420 &payload.payload.user_data_unregistered;
422 for (i = j = 0; j < 32 && ctx->sei_user_data[i]; i++) {
424 c = ctx->sei_user_data[i];
427 } else if (av_isxdigit(c)) {
429 v = (c <= '9' ? c - '0' : c - 'a' + 10);
431 goto invalid_user_data;
434 udu->uuid_iso_iec_11578[j / 2] |= v;
436 udu->uuid_iso_iec_11578[j / 2] = v << 4;
439 if (j == 32 && ctx->sei_user_data[i] == '+') {
440 size_t len = strlen(ctx->sei_user_data + i + 1);
442 udu->data_ref = av_buffer_alloc(len + 1);
443 if (!udu->data_ref) {
444 err = AVERROR(ENOMEM);
448 udu->data = udu->data_ref->data;
449 udu->data_length = len + 1;
450 memcpy(udu->data, ctx->sei_user_data + i + 1, len + 1);
452 err = ff_cbs_h264_add_sei_message(au, &payload);
454 av_log(bsf, AV_LOG_ERROR, "Failed to add user data SEI "
455 "message to access unit.\n");
461 av_log(bsf, AV_LOG_ERROR, "Invalid user data: "
462 "must be \"UUID+string\".\n");
463 err = AVERROR(EINVAL);
468 if (ctx->delete_filler) {
469 for (i = au->nb_units - 1; i >= 0; i--) {
470 if (au->units[i].type == H264_NAL_FILLER_DATA) {
471 ff_cbs_delete_unit(au, i);
475 if (au->units[i].type == H264_NAL_SEI) {
476 // Filler SEI messages.
477 H264RawSEI *sei = au->units[i].content;
479 for (j = sei->payload_count - 1; j >= 0; j--) {
480 if (sei->payload[j].payload_type ==
481 H264_SEI_TYPE_FILLER_PAYLOAD)
482 ff_cbs_h264_delete_sei_message(au, &au->units[i], j);
488 if (ctx->display_orientation != PASS) {
489 for (i = au->nb_units - 1; i >= 0; i--) {
491 if (au->units[i].type != H264_NAL_SEI)
493 sei = au->units[i].content;
495 for (j = sei->payload_count - 1; j >= 0; j--) {
496 H264RawSEIDisplayOrientation *disp;
499 if (sei->payload[j].payload_type !=
500 H264_SEI_TYPE_DISPLAY_ORIENTATION)
502 disp = &sei->payload[j].payload.display_orientation;
504 if (ctx->display_orientation == REMOVE ||
505 ctx->display_orientation == INSERT) {
506 ff_cbs_h264_delete_sei_message(au, &au->units[i], j);
510 matrix = av_malloc(9 * sizeof(int32_t));
512 err = AVERROR(ENOMEM);
516 av_display_rotation_set(matrix,
517 disp->anticlockwise_rotation *
519 av_display_matrix_flip(matrix, disp->hor_flip, disp->ver_flip);
521 // If there are multiple display orientation messages in an
522 // access unit, then the last one added to the packet (i.e.
523 // the first one in the access unit) will prevail.
524 err = av_packet_add_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX,
526 9 * sizeof(int32_t));
528 av_log(bsf, AV_LOG_ERROR, "Failed to attach extracted "
529 "displaymatrix side data to packet.\n");
536 if (ctx->display_orientation == INSERT) {
537 H264RawSEIPayload payload = {
538 .payload_type = H264_SEI_TYPE_DISPLAY_ORIENTATION,
540 H264RawSEIDisplayOrientation *disp =
541 &payload.payload.display_orientation;
546 data = av_packet_get_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX, &size);
547 if (data && size >= 9 * sizeof(int32_t)) {
552 memcpy(matrix, data, sizeof(matrix));
555 if (matrix[0] < 0 && matrix[4] > 0)
557 else if (matrix[0] > 0 && matrix[4] < 0)
559 av_display_matrix_flip(matrix, hflip, vflip);
561 angle = av_display_rotation_get(matrix);
563 if (!(angle >= -180.0 && angle <= 180.0 /* also excludes NaN */) ||
564 matrix[2] != 0 || matrix[5] != 0 ||
565 matrix[6] != 0 || matrix[7] != 0) {
566 av_log(bsf, AV_LOG_WARNING, "Input display matrix is not "
567 "representable in H.264 parameters.\n");
569 disp->hor_flip = hflip;
570 disp->ver_flip = vflip;
571 disp->anticlockwise_rotation =
572 (uint16_t)rint((angle >= 0.0 ? angle
579 if (has_sps || !ctx->done_first_au) {
580 if (!isnan(ctx->rotate)) {
581 disp->anticlockwise_rotation =
582 (uint16_t)rint((ctx->rotate >= 0.0 ? ctx->rotate
583 : ctx->rotate + 360.0) *
588 disp->hor_flip = !!(ctx->flip & FLIP_HORIZONTAL);
589 disp->ver_flip = !!(ctx->flip & FLIP_VERTICAL);
595 disp->display_orientation_repetition_period = 1;
597 err = ff_cbs_h264_add_sei_message(au, &payload);
599 av_log(bsf, AV_LOG_ERROR, "Failed to add display orientation "
600 "SEI message to access unit.\n");
606 err = ff_cbs_write_packet(ctx->output, pkt, au);
608 av_log(bsf, AV_LOG_ERROR, "Failed to write packet.\n");
612 ctx->done_first_au = 1;
616 ff_cbs_fragment_reset(au);
619 av_packet_unref(pkt);
624 static int h264_metadata_init(AVBSFContext *bsf)
626 H264MetadataContext *ctx = bsf->priv_data;
627 CodedBitstreamFragment *au = &ctx->access_unit;
630 err = ff_cbs_init(&ctx->input, AV_CODEC_ID_H264, bsf);
633 err = ff_cbs_init(&ctx->output, AV_CODEC_ID_H264, bsf);
637 if (bsf->par_in->extradata) {
638 err = ff_cbs_read_extradata(ctx->input, au, bsf->par_in);
640 av_log(bsf, AV_LOG_ERROR, "Failed to read extradata.\n");
644 for (i = 0; i < au->nb_units; i++) {
645 if (au->units[i].type == H264_NAL_SPS) {
646 err = h264_metadata_update_sps(bsf, au->units[i].content);
652 err = ff_cbs_write_extradata(ctx->output, bsf->par_out, au);
654 av_log(bsf, AV_LOG_ERROR, "Failed to write extradata.\n");
661 ff_cbs_fragment_reset(au);
665 static void h264_metadata_close(AVBSFContext *bsf)
667 H264MetadataContext *ctx = bsf->priv_data;
669 ff_cbs_fragment_free(&ctx->access_unit);
670 ff_cbs_close(&ctx->input);
671 ff_cbs_close(&ctx->output);
674 #define OFFSET(x) offsetof(H264MetadataContext, x)
675 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM)
676 static const AVOption h264_metadata_options[] = {
677 { "aud", "Access Unit Delimiter NAL units",
678 OFFSET(aud), AV_OPT_TYPE_INT,
679 { .i64 = PASS }, PASS, REMOVE, FLAGS, "aud" },
680 { "pass", NULL, 0, AV_OPT_TYPE_CONST,
681 { .i64 = PASS }, .flags = FLAGS, .unit = "aud" },
682 { "insert", NULL, 0, AV_OPT_TYPE_CONST,
683 { .i64 = INSERT }, .flags = FLAGS, .unit = "aud" },
684 { "remove", NULL, 0, AV_OPT_TYPE_CONST,
685 { .i64 = REMOVE }, .flags = FLAGS, .unit = "aud" },
687 { "sample_aspect_ratio", "Set sample aspect ratio (table E-1)",
688 OFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL,
689 { .dbl = 0.0 }, 0, 65535, FLAGS },
691 { "overscan_appropriate_flag", "Set VUI overscan appropriate flag",
692 OFFSET(overscan_appropriate_flag), AV_OPT_TYPE_INT,
693 { .i64 = -1 }, -1, 1, FLAGS },
695 { "video_format", "Set video format (table E-2)",
696 OFFSET(video_format), AV_OPT_TYPE_INT,
697 { .i64 = -1 }, -1, 7, FLAGS},
698 { "video_full_range_flag", "Set video full range flag",
699 OFFSET(video_full_range_flag), AV_OPT_TYPE_INT,
700 { .i64 = -1 }, -1, 1, FLAGS },
701 { "colour_primaries", "Set colour primaries (table E-3)",
702 OFFSET(colour_primaries), AV_OPT_TYPE_INT,
703 { .i64 = -1 }, -1, 255, FLAGS },
704 { "transfer_characteristics", "Set transfer characteristics (table E-4)",
705 OFFSET(transfer_characteristics), AV_OPT_TYPE_INT,
706 { .i64 = -1 }, -1, 255, FLAGS },
707 { "matrix_coefficients", "Set matrix coefficients (table E-5)",
708 OFFSET(matrix_coefficients), AV_OPT_TYPE_INT,
709 { .i64 = -1 }, -1, 255, FLAGS },
711 { "chroma_sample_loc_type", "Set chroma sample location type (figure E-1)",
712 OFFSET(chroma_sample_loc_type), AV_OPT_TYPE_INT,
713 { .i64 = -1 }, -1, 6, FLAGS },
715 { "tick_rate", "Set VUI tick rate (num_units_in_tick / time_scale)",
716 OFFSET(tick_rate), AV_OPT_TYPE_RATIONAL,
717 { .dbl = 0.0 }, 0, UINT_MAX, FLAGS },
718 { "fixed_frame_rate_flag", "Set VUI fixed frame rate flag",
719 OFFSET(fixed_frame_rate_flag), AV_OPT_TYPE_INT,
720 { .i64 = -1 }, -1, 1, FLAGS },
722 { "crop_left", "Set left border crop offset",
723 OFFSET(crop_left), AV_OPT_TYPE_INT,
724 { .i64 = -1 }, -1, H264_MAX_WIDTH, FLAGS },
725 { "crop_right", "Set right border crop offset",
726 OFFSET(crop_right), AV_OPT_TYPE_INT,
727 { .i64 = -1 }, -1, H264_MAX_WIDTH, FLAGS },
728 { "crop_top", "Set top border crop offset",
729 OFFSET(crop_top), AV_OPT_TYPE_INT,
730 { .i64 = -1 }, -1, H264_MAX_HEIGHT, FLAGS },
731 { "crop_bottom", "Set bottom border crop offset",
732 OFFSET(crop_bottom), AV_OPT_TYPE_INT,
733 { .i64 = -1 }, -1, H264_MAX_HEIGHT, FLAGS },
735 { "sei_user_data", "Insert SEI user data (UUID+string)",
736 OFFSET(sei_user_data), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = FLAGS },
738 { "delete_filler", "Delete all filler (both NAL and SEI)",
739 OFFSET(delete_filler), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS},
741 { "display_orientation", "Display orientation SEI",
742 OFFSET(display_orientation), AV_OPT_TYPE_INT,
743 { .i64 = PASS }, PASS, EXTRACT, FLAGS, "disp_or" },
744 { "pass", NULL, 0, AV_OPT_TYPE_CONST,
745 { .i64 = PASS }, .flags = FLAGS, .unit = "disp_or" },
746 { "insert", NULL, 0, AV_OPT_TYPE_CONST,
747 { .i64 = INSERT }, .flags = FLAGS, .unit = "disp_or" },
748 { "remove", NULL, 0, AV_OPT_TYPE_CONST,
749 { .i64 = REMOVE }, .flags = FLAGS, .unit = "disp_or" },
750 { "extract", NULL, 0, AV_OPT_TYPE_CONST,
751 { .i64 = EXTRACT }, .flags = FLAGS, .unit = "disp_or" },
753 { "rotate", "Set rotation in display orientation SEI (anticlockwise angle in degrees)",
754 OFFSET(rotate), AV_OPT_TYPE_DOUBLE,
755 { .dbl = NAN }, -360.0, +360.0, FLAGS },
756 { "flip", "Set flip in display orientation SEI",
757 OFFSET(flip), AV_OPT_TYPE_FLAGS,
758 { .i64 = 0 }, 0, FLIP_HORIZONTAL | FLIP_VERTICAL, FLAGS, "flip" },
759 { "horizontal", "Set hor_flip",
760 0, AV_OPT_TYPE_CONST,
761 { .i64 = FLIP_HORIZONTAL }, .flags = FLAGS, .unit = "flip" },
762 { "vertical", "Set ver_flip",
763 0, AV_OPT_TYPE_CONST,
764 { .i64 = FLIP_VERTICAL }, .flags = FLAGS, .unit = "flip" },
766 { "level", "Set level (table A-1)",
767 OFFSET(level), AV_OPT_TYPE_INT,
768 { .i64 = LEVEL_UNSET }, LEVEL_UNSET, 0xff, FLAGS, "level" },
769 { "auto", "Attempt to guess level from stream properties",
770 0, AV_OPT_TYPE_CONST,
771 { .i64 = LEVEL_AUTO }, .flags = FLAGS, .unit = "level" },
772 #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
773 { .i64 = value }, .flags = FLAGS, .unit = "level"
776 { LEVEL("1.1", 11) },
777 { LEVEL("1.2", 12) },
778 { LEVEL("1.3", 13) },
780 { LEVEL("2.1", 21) },
781 { LEVEL("2.2", 22) },
783 { LEVEL("3.1", 31) },
784 { LEVEL("3.2", 32) },
786 { LEVEL("4.1", 41) },
787 { LEVEL("4.2", 42) },
789 { LEVEL("5.1", 51) },
790 { LEVEL("5.2", 52) },
792 { LEVEL("6.1", 61) },
793 { LEVEL("6.2", 62) },
799 static const AVClass h264_metadata_class = {
800 .class_name = "h264_metadata_bsf",
801 .item_name = av_default_item_name,
802 .option = h264_metadata_options,
803 .version = LIBAVUTIL_VERSION_INT,
806 static const enum AVCodecID h264_metadata_codec_ids[] = {
807 AV_CODEC_ID_H264, AV_CODEC_ID_NONE,
810 const AVBitStreamFilter ff_h264_metadata_bsf = {
811 .name = "h264_metadata",
812 .priv_data_size = sizeof(H264MetadataContext),
813 .priv_class = &h264_metadata_class,
814 .init = &h264_metadata_init,
815 .close = &h264_metadata_close,
816 .filter = &h264_metadata_filter,
817 .codec_ids = h264_metadata_codec_ids,