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 *cbc;
53 CodedBitstreamFragment access_unit;
59 AVRational sample_aspect_ratio;
61 int overscan_appropriate_flag;
64 int video_full_range_flag;
66 int transfer_characteristics;
67 int matrix_coefficients;
69 int chroma_sample_loc_type;
72 int fixed_frame_rate_flag;
79 const char *sei_user_data;
83 int display_orientation;
88 } H264MetadataContext;
91 static int h264_metadata_update_sps(AVBSFContext *bsf,
94 H264MetadataContext *ctx = bsf->priv_data;
96 int crop_unit_x, crop_unit_y;
98 if (ctx->sample_aspect_ratio.num && ctx->sample_aspect_ratio.den) {
100 static const AVRational sar_idc[] = {
101 { 0, 0 }, // Unspecified (never written here).
102 { 1, 1 }, { 12, 11 }, { 10, 11 }, { 16, 11 },
103 { 40, 33 }, { 24, 11 }, { 20, 11 }, { 32, 11 },
104 { 80, 33 }, { 18, 11 }, { 15, 11 }, { 64, 33 },
105 { 160, 99 }, { 4, 3 }, { 3, 2 }, { 2, 1 },
109 av_reduce(&num, &den, ctx->sample_aspect_ratio.num,
110 ctx->sample_aspect_ratio.den, 65535);
112 for (i = 1; i < FF_ARRAY_ELEMS(sar_idc); i++) {
113 if (num == sar_idc[i].num &&
114 den == sar_idc[i].den)
117 if (i == FF_ARRAY_ELEMS(sar_idc)) {
118 sps->vui.aspect_ratio_idc = 255;
119 sps->vui.sar_width = num;
120 sps->vui.sar_height = den;
122 sps->vui.aspect_ratio_idc = i;
124 sps->vui.aspect_ratio_info_present_flag = 1;
128 #define SET_VUI_FIELD(field) do { \
129 if (ctx->field >= 0) { \
130 sps->vui.field = ctx->field; \
135 if (ctx->overscan_appropriate_flag >= 0) {
136 SET_VUI_FIELD(overscan_appropriate_flag);
137 sps->vui.overscan_info_present_flag = 1;
140 if (ctx->video_format >= 0 ||
141 ctx->video_full_range_flag >= 0 ||
142 ctx->colour_primaries >= 0 ||
143 ctx->transfer_characteristics >= 0 ||
144 ctx->matrix_coefficients >= 0) {
146 SET_VUI_FIELD(video_format);
148 SET_VUI_FIELD(video_full_range_flag);
150 if (ctx->colour_primaries >= 0 ||
151 ctx->transfer_characteristics >= 0 ||
152 ctx->matrix_coefficients >= 0) {
154 SET_VUI_FIELD(colour_primaries);
155 SET_VUI_FIELD(transfer_characteristics);
156 SET_VUI_FIELD(matrix_coefficients);
158 sps->vui.colour_description_present_flag = 1;
160 sps->vui.video_signal_type_present_flag = 1;
163 if (ctx->chroma_sample_loc_type >= 0) {
164 sps->vui.chroma_sample_loc_type_top_field =
165 ctx->chroma_sample_loc_type;
166 sps->vui.chroma_sample_loc_type_bottom_field =
167 ctx->chroma_sample_loc_type;
168 sps->vui.chroma_loc_info_present_flag = 1;
172 if (ctx->tick_rate.num && ctx->tick_rate.den) {
175 av_reduce(&num, &den, ctx->tick_rate.num, ctx->tick_rate.den,
176 UINT32_MAX > INT_MAX ? UINT32_MAX : INT_MAX);
178 sps->vui.time_scale = num;
179 sps->vui.num_units_in_tick = den;
181 sps->vui.timing_info_present_flag = 1;
184 SET_VUI_FIELD(fixed_frame_rate_flag);
186 if (sps->separate_colour_plane_flag || sps->chroma_format_idc == 0) {
188 crop_unit_y = 2 - sps->frame_mbs_only_flag;
190 crop_unit_x = 1 + (sps->chroma_format_idc < 3);
191 crop_unit_y = (1 + (sps->chroma_format_idc < 2)) *
192 (2 - sps->frame_mbs_only_flag);
194 #define CROP(border, unit) do { \
195 if (ctx->crop_ ## border >= 0) { \
196 if (ctx->crop_ ## border % unit != 0) { \
197 av_log(bsf, AV_LOG_ERROR, "Invalid value for crop_%s: " \
198 "must be a multiple of %d.\n", #border, unit); \
199 return AVERROR(EINVAL); \
201 sps->frame_crop_ ## border ## _offset = \
202 ctx->crop_ ## border / unit; \
203 sps->frame_cropping_flag = 1; \
206 CROP(left, crop_unit_x);
207 CROP(right, crop_unit_x);
208 CROP(top, crop_unit_y);
209 CROP(bottom, crop_unit_y);
212 if (ctx->level != LEVEL_UNSET) {
215 if (ctx->level == LEVEL_AUTO) {
216 const H264LevelDescriptor *desc;
218 int width, height, dpb_frames;
221 if (sps->vui.nal_hrd_parameters_present_flag) {
222 bit_rate = (sps->vui.nal_hrd_parameters.bit_rate_value_minus1[0] + 1) *
223 (INT64_C(1) << (sps->vui.nal_hrd_parameters.bit_rate_scale + 6));
224 } else if (sps->vui.vcl_hrd_parameters_present_flag) {
225 bit_rate = (sps->vui.vcl_hrd_parameters.bit_rate_value_minus1[0] + 1) *
226 (INT64_C(1) << (sps->vui.vcl_hrd_parameters.bit_rate_scale + 6));
227 // Adjust for VCL vs. NAL limits.
228 bit_rate = bit_rate * 6 / 5;
233 // Don't use max_dec_frame_buffering if it is only inferred.
234 dpb_frames = sps->vui.bitstream_restriction_flag ?
235 sps->vui.max_dec_frame_buffering : H264_MAX_DPB_FRAMES;
237 width = 16 * (sps->pic_width_in_mbs_minus1 + 1);
238 height = 16 * (sps->pic_height_in_map_units_minus1 + 1) *
239 (2 - sps->frame_mbs_only_flag);
241 if (sps->vui.timing_info_present_flag)
242 framerate = sps->vui.time_scale / sps->vui.num_units_in_tick / 2;
246 desc = ff_h264_guess_level(sps->profile_idc, bit_rate, framerate,
247 width, height, dpb_frames);
249 level_idc = desc->level_idc;
251 av_log(bsf, AV_LOG_WARNING, "Stream does not appear to "
252 "conform to any level: using level 6.2.\n");
256 level_idc = ctx->level;
259 if (level_idc == 9) {
260 if (sps->profile_idc == 66 ||
261 sps->profile_idc == 77 ||
262 sps->profile_idc == 88) {
264 sps->constraint_set3_flag = 1;
269 sps->level_idc = level_idc;
274 sps->vui_parameters_present_flag = 1;
279 static int h264_metadata_update_side_data(AVBSFContext *bsf, AVPacket *pkt)
281 H264MetadataContext *ctx = bsf->priv_data;
282 CodedBitstreamFragment *au = &ctx->access_unit;
287 side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA,
292 err = ff_cbs_read(ctx->cbc, au, side_data, side_data_size);
294 av_log(bsf, AV_LOG_ERROR, "Failed to read extradata from packet side data.\n");
298 for (i = 0; i < au->nb_units; i++) {
299 if (au->units[i].type == H264_NAL_SPS) {
300 err = h264_metadata_update_sps(bsf, au->units[i].content);
306 err = ff_cbs_write_fragment_data(ctx->cbc, au);
308 av_log(bsf, AV_LOG_ERROR, "Failed to write extradata into packet side data.\n");
312 side_data = av_packet_new_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, au->data_size);
314 return AVERROR(ENOMEM);
315 memcpy(side_data, au->data, au->data_size);
317 ff_cbs_fragment_reset(au);
322 static int h264_metadata_filter(AVBSFContext *bsf, AVPacket *pkt)
324 H264MetadataContext *ctx = bsf->priv_data;
325 CodedBitstreamFragment *au = &ctx->access_unit;
326 int err, i, j, has_sps;
329 err = ff_bsf_get_packet_ref(bsf, pkt);
333 err = h264_metadata_update_side_data(bsf, pkt);
337 err = ff_cbs_read_packet(ctx->cbc, au, pkt);
339 av_log(bsf, AV_LOG_ERROR, "Failed to read packet.\n");
343 if (au->nb_units == 0) {
344 av_log(bsf, AV_LOG_ERROR, "No NAL units in packet.\n");
345 err = AVERROR_INVALIDDATA;
349 // If an AUD is present, it must be the first NAL unit.
350 if (au->units[0].type == H264_NAL_AUD) {
351 if (ctx->aud == REMOVE)
352 ff_cbs_delete_unit(au, 0);
354 if (ctx->aud == INSERT) {
355 static const int primary_pic_type_table[] = {
358 0x0e7, // 0, 1, 2, 5, 6, 7
362 0x3bd, // 0, 2, 3, 4, 5, 7, 8, 9
363 0x3ff, // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
365 int primary_pic_type_mask = 0xff;
367 for (i = 0; i < au->nb_units; i++) {
368 if (au->units[i].type == H264_NAL_SLICE ||
369 au->units[i].type == H264_NAL_IDR_SLICE) {
370 H264RawSlice *slice = au->units[i].content;
371 for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++) {
372 if (!(primary_pic_type_table[j] &
373 (1 << slice->header.slice_type)))
374 primary_pic_type_mask &= ~(1 << j);
378 for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++)
379 if (primary_pic_type_mask & (1 << j))
381 if (j >= FF_ARRAY_ELEMS(primary_pic_type_table)) {
382 av_log(bsf, AV_LOG_ERROR, "No usable primary_pic_type: "
383 "invalid slice types?\n");
384 err = AVERROR_INVALIDDATA;
389 .nal_unit_header.nal_unit_type = H264_NAL_AUD,
390 .primary_pic_type = j,
393 err = ff_cbs_insert_unit_content(au,
394 0, H264_NAL_AUD, &aud, NULL);
396 av_log(bsf, AV_LOG_ERROR, "Failed to insert AUD.\n");
403 for (i = 0; i < au->nb_units; i++) {
404 if (au->units[i].type == H264_NAL_SPS) {
405 err = h264_metadata_update_sps(bsf, au->units[i].content);
412 // Only insert the SEI in access units containing SPSs, and also
413 // unconditionally in the first access unit we ever see.
414 if (ctx->sei_user_data && (has_sps || !ctx->done_first_au)) {
415 H264RawSEIPayload payload = {
416 .payload_type = H264_SEI_TYPE_USER_DATA_UNREGISTERED,
418 H264RawSEIUserDataUnregistered *udu =
419 &payload.payload.user_data_unregistered;
421 for (i = j = 0; j < 32 && ctx->sei_user_data[i]; i++) {
423 c = ctx->sei_user_data[i];
426 } else if (av_isxdigit(c)) {
428 v = (c <= '9' ? c - '0' : c - 'a' + 10);
430 goto invalid_user_data;
433 udu->uuid_iso_iec_11578[j / 2] |= v;
435 udu->uuid_iso_iec_11578[j / 2] = v << 4;
438 if (j == 32 && ctx->sei_user_data[i] == '+') {
439 size_t len = strlen(ctx->sei_user_data + i + 1);
441 udu->data_ref = av_buffer_alloc(len + 1);
442 if (!udu->data_ref) {
443 err = AVERROR(ENOMEM);
447 udu->data = udu->data_ref->data;
448 udu->data_length = len + 1;
449 memcpy(udu->data, ctx->sei_user_data + i + 1, len + 1);
451 err = ff_cbs_h264_add_sei_message(au, &payload);
453 av_log(bsf, AV_LOG_ERROR, "Failed to add user data SEI "
454 "message to access unit.\n");
460 av_log(bsf, AV_LOG_ERROR, "Invalid user data: "
461 "must be \"UUID+string\".\n");
462 err = AVERROR(EINVAL);
467 if (ctx->delete_filler) {
468 for (i = au->nb_units - 1; i >= 0; i--) {
469 if (au->units[i].type == H264_NAL_FILLER_DATA) {
470 ff_cbs_delete_unit(au, i);
474 if (au->units[i].type == H264_NAL_SEI) {
475 // Filler SEI messages.
476 H264RawSEI *sei = au->units[i].content;
478 for (j = sei->payload_count - 1; j >= 0; j--) {
479 if (sei->payload[j].payload_type ==
480 H264_SEI_TYPE_FILLER_PAYLOAD)
481 ff_cbs_h264_delete_sei_message(au, &au->units[i], j);
487 if (ctx->display_orientation != PASS) {
488 for (i = au->nb_units - 1; i >= 0; i--) {
490 if (au->units[i].type != H264_NAL_SEI)
492 sei = au->units[i].content;
494 for (j = sei->payload_count - 1; j >= 0; j--) {
495 H264RawSEIDisplayOrientation *disp;
498 if (sei->payload[j].payload_type !=
499 H264_SEI_TYPE_DISPLAY_ORIENTATION)
501 disp = &sei->payload[j].payload.display_orientation;
503 if (ctx->display_orientation == REMOVE ||
504 ctx->display_orientation == INSERT) {
505 ff_cbs_h264_delete_sei_message(au, &au->units[i], j);
509 matrix = av_malloc(9 * sizeof(int32_t));
511 err = AVERROR(ENOMEM);
515 av_display_rotation_set(matrix,
516 disp->anticlockwise_rotation *
518 av_display_matrix_flip(matrix, disp->hor_flip, disp->ver_flip);
520 // If there are multiple display orientation messages in an
521 // access unit, then the last one added to the packet (i.e.
522 // the first one in the access unit) will prevail.
523 err = av_packet_add_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX,
525 9 * sizeof(int32_t));
527 av_log(bsf, AV_LOG_ERROR, "Failed to attach extracted "
528 "displaymatrix side data to packet.\n");
535 if (ctx->display_orientation == INSERT) {
536 H264RawSEIPayload payload = {
537 .payload_type = H264_SEI_TYPE_DISPLAY_ORIENTATION,
539 H264RawSEIDisplayOrientation *disp =
540 &payload.payload.display_orientation;
545 data = av_packet_get_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX, &size);
546 if (data && size >= 9 * sizeof(int32_t)) {
551 memcpy(matrix, data, sizeof(matrix));
554 if (matrix[0] < 0 && matrix[4] > 0)
556 else if (matrix[0] > 0 && matrix[4] < 0)
558 av_display_matrix_flip(matrix, hflip, vflip);
560 angle = av_display_rotation_get(matrix);
562 if (!(angle >= -180.0 && angle <= 180.0 /* also excludes NaN */) ||
563 matrix[2] != 0 || matrix[5] != 0 ||
564 matrix[6] != 0 || matrix[7] != 0) {
565 av_log(bsf, AV_LOG_WARNING, "Input display matrix is not "
566 "representable in H.264 parameters.\n");
568 disp->hor_flip = hflip;
569 disp->ver_flip = vflip;
570 disp->anticlockwise_rotation =
571 (uint16_t)rint((angle >= 0.0 ? angle
578 if (has_sps || !ctx->done_first_au) {
579 if (!isnan(ctx->rotate)) {
580 disp->anticlockwise_rotation =
581 (uint16_t)rint((ctx->rotate >= 0.0 ? ctx->rotate
582 : ctx->rotate + 360.0) *
587 disp->hor_flip = !!(ctx->flip & FLIP_HORIZONTAL);
588 disp->ver_flip = !!(ctx->flip & FLIP_VERTICAL);
594 disp->display_orientation_repetition_period = 1;
596 err = ff_cbs_h264_add_sei_message(au, &payload);
598 av_log(bsf, AV_LOG_ERROR, "Failed to add display orientation "
599 "SEI message to access unit.\n");
605 err = ff_cbs_write_packet(ctx->cbc, pkt, au);
607 av_log(bsf, AV_LOG_ERROR, "Failed to write packet.\n");
611 ctx->done_first_au = 1;
615 ff_cbs_fragment_reset(au);
618 av_packet_unref(pkt);
623 static int h264_metadata_init(AVBSFContext *bsf)
625 H264MetadataContext *ctx = bsf->priv_data;
626 CodedBitstreamFragment *au = &ctx->access_unit;
629 err = ff_cbs_init(&ctx->cbc, AV_CODEC_ID_H264, bsf);
633 if (bsf->par_in->extradata) {
634 err = ff_cbs_read_extradata(ctx->cbc, au, bsf->par_in);
636 av_log(bsf, AV_LOG_ERROR, "Failed to read extradata.\n");
640 for (i = 0; i < au->nb_units; i++) {
641 if (au->units[i].type == H264_NAL_SPS) {
642 err = h264_metadata_update_sps(bsf, au->units[i].content);
648 err = ff_cbs_write_extradata(ctx->cbc, bsf->par_out, au);
650 av_log(bsf, AV_LOG_ERROR, "Failed to write extradata.\n");
657 ff_cbs_fragment_reset(au);
661 static void h264_metadata_close(AVBSFContext *bsf)
663 H264MetadataContext *ctx = bsf->priv_data;
665 ff_cbs_fragment_free(&ctx->access_unit);
666 ff_cbs_close(&ctx->cbc);
669 #define OFFSET(x) offsetof(H264MetadataContext, x)
670 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM)
671 static const AVOption h264_metadata_options[] = {
672 { "aud", "Access Unit Delimiter NAL units",
673 OFFSET(aud), AV_OPT_TYPE_INT,
674 { .i64 = PASS }, PASS, REMOVE, FLAGS, "aud" },
675 { "pass", NULL, 0, AV_OPT_TYPE_CONST,
676 { .i64 = PASS }, .flags = FLAGS, .unit = "aud" },
677 { "insert", NULL, 0, AV_OPT_TYPE_CONST,
678 { .i64 = INSERT }, .flags = FLAGS, .unit = "aud" },
679 { "remove", NULL, 0, AV_OPT_TYPE_CONST,
680 { .i64 = REMOVE }, .flags = FLAGS, .unit = "aud" },
682 { "sample_aspect_ratio", "Set sample aspect ratio (table E-1)",
683 OFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL,
684 { .dbl = 0.0 }, 0, 65535, FLAGS },
686 { "overscan_appropriate_flag", "Set VUI overscan appropriate flag",
687 OFFSET(overscan_appropriate_flag), AV_OPT_TYPE_INT,
688 { .i64 = -1 }, -1, 1, FLAGS },
690 { "video_format", "Set video format (table E-2)",
691 OFFSET(video_format), AV_OPT_TYPE_INT,
692 { .i64 = -1 }, -1, 7, FLAGS},
693 { "video_full_range_flag", "Set video full range flag",
694 OFFSET(video_full_range_flag), AV_OPT_TYPE_INT,
695 { .i64 = -1 }, -1, 1, FLAGS },
696 { "colour_primaries", "Set colour primaries (table E-3)",
697 OFFSET(colour_primaries), AV_OPT_TYPE_INT,
698 { .i64 = -1 }, -1, 255, FLAGS },
699 { "transfer_characteristics", "Set transfer characteristics (table E-4)",
700 OFFSET(transfer_characteristics), AV_OPT_TYPE_INT,
701 { .i64 = -1 }, -1, 255, FLAGS },
702 { "matrix_coefficients", "Set matrix coefficients (table E-5)",
703 OFFSET(matrix_coefficients), AV_OPT_TYPE_INT,
704 { .i64 = -1 }, -1, 255, FLAGS },
706 { "chroma_sample_loc_type", "Set chroma sample location type (figure E-1)",
707 OFFSET(chroma_sample_loc_type), AV_OPT_TYPE_INT,
708 { .i64 = -1 }, -1, 6, FLAGS },
710 { "tick_rate", "Set VUI tick rate (num_units_in_tick / time_scale)",
711 OFFSET(tick_rate), AV_OPT_TYPE_RATIONAL,
712 { .dbl = 0.0 }, 0, UINT_MAX, FLAGS },
713 { "fixed_frame_rate_flag", "Set VUI fixed frame rate flag",
714 OFFSET(fixed_frame_rate_flag), AV_OPT_TYPE_INT,
715 { .i64 = -1 }, -1, 1, FLAGS },
717 { "crop_left", "Set left border crop offset",
718 OFFSET(crop_left), AV_OPT_TYPE_INT,
719 { .i64 = -1 }, -1, H264_MAX_WIDTH, FLAGS },
720 { "crop_right", "Set right border crop offset",
721 OFFSET(crop_right), AV_OPT_TYPE_INT,
722 { .i64 = -1 }, -1, H264_MAX_WIDTH, FLAGS },
723 { "crop_top", "Set top border crop offset",
724 OFFSET(crop_top), AV_OPT_TYPE_INT,
725 { .i64 = -1 }, -1, H264_MAX_HEIGHT, FLAGS },
726 { "crop_bottom", "Set bottom border crop offset",
727 OFFSET(crop_bottom), AV_OPT_TYPE_INT,
728 { .i64 = -1 }, -1, H264_MAX_HEIGHT, FLAGS },
730 { "sei_user_data", "Insert SEI user data (UUID+string)",
731 OFFSET(sei_user_data), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = FLAGS },
733 { "delete_filler", "Delete all filler (both NAL and SEI)",
734 OFFSET(delete_filler), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS},
736 { "display_orientation", "Display orientation SEI",
737 OFFSET(display_orientation), AV_OPT_TYPE_INT,
738 { .i64 = PASS }, PASS, EXTRACT, FLAGS, "disp_or" },
739 { "pass", NULL, 0, AV_OPT_TYPE_CONST,
740 { .i64 = PASS }, .flags = FLAGS, .unit = "disp_or" },
741 { "insert", NULL, 0, AV_OPT_TYPE_CONST,
742 { .i64 = INSERT }, .flags = FLAGS, .unit = "disp_or" },
743 { "remove", NULL, 0, AV_OPT_TYPE_CONST,
744 { .i64 = REMOVE }, .flags = FLAGS, .unit = "disp_or" },
745 { "extract", NULL, 0, AV_OPT_TYPE_CONST,
746 { .i64 = EXTRACT }, .flags = FLAGS, .unit = "disp_or" },
748 { "rotate", "Set rotation in display orientation SEI (anticlockwise angle in degrees)",
749 OFFSET(rotate), AV_OPT_TYPE_DOUBLE,
750 { .dbl = NAN }, -360.0, +360.0, FLAGS },
751 { "flip", "Set flip in display orientation SEI",
752 OFFSET(flip), AV_OPT_TYPE_FLAGS,
753 { .i64 = 0 }, 0, FLIP_HORIZONTAL | FLIP_VERTICAL, FLAGS, "flip" },
754 { "horizontal", "Set hor_flip",
755 0, AV_OPT_TYPE_CONST,
756 { .i64 = FLIP_HORIZONTAL }, .flags = FLAGS, .unit = "flip" },
757 { "vertical", "Set ver_flip",
758 0, AV_OPT_TYPE_CONST,
759 { .i64 = FLIP_VERTICAL }, .flags = FLAGS, .unit = "flip" },
761 { "level", "Set level (table A-1)",
762 OFFSET(level), AV_OPT_TYPE_INT,
763 { .i64 = LEVEL_UNSET }, LEVEL_UNSET, 0xff, FLAGS, "level" },
764 { "auto", "Attempt to guess level from stream properties",
765 0, AV_OPT_TYPE_CONST,
766 { .i64 = LEVEL_AUTO }, .flags = FLAGS, .unit = "level" },
767 #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
768 { .i64 = value }, .flags = FLAGS, .unit = "level"
771 { LEVEL("1.1", 11) },
772 { LEVEL("1.2", 12) },
773 { LEVEL("1.3", 13) },
775 { LEVEL("2.1", 21) },
776 { LEVEL("2.2", 22) },
778 { LEVEL("3.1", 31) },
779 { LEVEL("3.2", 32) },
781 { LEVEL("4.1", 41) },
782 { LEVEL("4.2", 42) },
784 { LEVEL("5.1", 51) },
785 { LEVEL("5.2", 52) },
787 { LEVEL("6.1", 61) },
788 { LEVEL("6.2", 62) },
794 static const AVClass h264_metadata_class = {
795 .class_name = "h264_metadata_bsf",
796 .item_name = av_default_item_name,
797 .option = h264_metadata_options,
798 .version = LIBAVUTIL_VERSION_INT,
801 static const enum AVCodecID h264_metadata_codec_ids[] = {
802 AV_CODEC_ID_H264, AV_CODEC_ID_NONE,
805 const AVBitStreamFilter ff_h264_metadata_bsf = {
806 .name = "h264_metadata",
807 .priv_data_size = sizeof(H264MetadataContext),
808 .priv_class = &h264_metadata_class,
809 .init = &h264_metadata_init,
810 .close = &h264_metadata_close,
811 .filter = &h264_metadata_filter,
812 .codec_ids = h264_metadata_codec_ids,