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/common.h"
20 #include "libavutil/opt.h"
32 typedef struct AV1MetadataContext {
35 CodedBitstreamContext *cbc;
36 CodedBitstreamFragment access_unit;
41 int transfer_characteristics;
42 int matrix_coefficients;
45 int chroma_sample_position;
48 int num_ticks_per_picture;
54 static int av1_metadata_update_sequence_header(AVBSFContext *bsf,
55 AV1RawSequenceHeader *seq)
57 AV1MetadataContext *ctx = bsf->priv_data;
58 AV1RawColorConfig *clc = &seq->color_config;
59 AV1RawTimingInfo *tim = &seq->timing_info;
61 if (ctx->color_primaries >= 0 ||
62 ctx->transfer_characteristics >= 0 ||
63 ctx->matrix_coefficients >= 0) {
64 clc->color_description_present_flag = 1;
66 if (ctx->color_primaries >= 0)
67 clc->color_primaries = ctx->color_primaries;
68 if (ctx->transfer_characteristics >= 0)
69 clc->transfer_characteristics = ctx->transfer_characteristics;
70 if (ctx->matrix_coefficients >= 0)
71 clc->matrix_coefficients = ctx->matrix_coefficients;
74 if (ctx->color_range >= 0) {
75 if (clc->color_primaries == AVCOL_PRI_BT709 &&
76 clc->transfer_characteristics == AVCOL_TRC_IEC61966_2_1 &&
77 clc->matrix_coefficients == AVCOL_SPC_RGB) {
78 av_log(bsf, AV_LOG_WARNING, "Warning: color_range cannot be set "
79 "on RGB streams encoded in BT.709 sRGB.\n");
81 clc->color_range = ctx->color_range;
85 if (ctx->chroma_sample_position >= 0) {
86 if (clc->mono_chrome || !clc->subsampling_x || !clc->subsampling_y) {
87 av_log(bsf, AV_LOG_WARNING, "Warning: chroma_sample_position "
88 "can only be set for 4:2:0 streams.\n");
90 clc->chroma_sample_position = ctx->chroma_sample_position;
94 if (ctx->tick_rate.num && ctx->tick_rate.den) {
97 av_reduce(&num, &den, ctx->tick_rate.num, ctx->tick_rate.den,
98 UINT32_MAX > INT_MAX ? UINT32_MAX : INT_MAX);
100 tim->time_scale = num;
101 tim->num_units_in_display_tick = den;
102 seq->timing_info_present_flag = 1;
104 if (ctx->num_ticks_per_picture > 0) {
105 tim->equal_picture_interval = 1;
106 tim->num_ticks_per_picture_minus_1 =
107 ctx->num_ticks_per_picture - 1;
114 static int av1_metadata_update_side_data(AVBSFContext *bsf, AVPacket *pkt)
116 AV1MetadataContext *ctx = bsf->priv_data;
117 CodedBitstreamFragment *frag = &ctx->access_unit;
122 side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA,
127 err = ff_cbs_read(ctx->cbc, frag, side_data, side_data_size);
129 av_log(bsf, AV_LOG_ERROR, "Failed to read extradata from packet side data.\n");
133 for (i = 0; i < frag->nb_units; i++) {
134 if (frag->units[i].type == AV1_OBU_SEQUENCE_HEADER) {
135 AV1RawOBU *obu = frag->units[i].content;
136 err = av1_metadata_update_sequence_header(bsf, &obu->obu.sequence_header);
142 err = ff_cbs_write_fragment_data(ctx->cbc, frag);
144 av_log(bsf, AV_LOG_ERROR, "Failed to write extradata into packet side data.\n");
148 side_data = av_packet_new_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, frag->data_size);
150 return AVERROR(ENOMEM);
151 memcpy(side_data, frag->data, frag->data_size);
153 ff_cbs_fragment_reset(ctx->cbc, frag);
158 static int av1_metadata_filter(AVBSFContext *bsf, AVPacket *pkt)
160 AV1MetadataContext *ctx = bsf->priv_data;
161 CodedBitstreamFragment *frag = &ctx->access_unit;
165 err = ff_bsf_get_packet_ref(bsf, pkt);
169 err = av1_metadata_update_side_data(bsf, pkt);
173 err = ff_cbs_read_packet(ctx->cbc, frag, pkt);
175 av_log(bsf, AV_LOG_ERROR, "Failed to read packet.\n");
179 if (frag->nb_units == 0) {
180 av_log(bsf, AV_LOG_ERROR, "No OBU in packet.\n");
181 err = AVERROR_INVALIDDATA;
185 for (i = 0; i < frag->nb_units; i++) {
186 if (frag->units[i].type == AV1_OBU_SEQUENCE_HEADER) {
187 obu = frag->units[i].content;
188 err = av1_metadata_update_sequence_header(bsf, &obu->obu.sequence_header);
194 // If a Temporal Delimiter is present, it must be the first OBU.
195 if (frag->units[0].type == AV1_OBU_TEMPORAL_DELIMITER) {
196 if (ctx->td == REMOVE)
197 ff_cbs_delete_unit(ctx->cbc, frag, 0);
198 } else if (ctx->td == INSERT) {
200 .header.obu_type = AV1_OBU_TEMPORAL_DELIMITER,
203 err = ff_cbs_insert_unit_content(ctx->cbc, frag, 0, AV1_OBU_TEMPORAL_DELIMITER,
206 av_log(bsf, AV_LOG_ERROR, "Failed to insert Temporal Delimiter.\n");
211 if (ctx->delete_padding) {
212 for (i = frag->nb_units - 1; i >= 0; i--) {
213 if (frag->units[i].type == AV1_OBU_PADDING)
214 ff_cbs_delete_unit(ctx->cbc, frag, i);
218 err = ff_cbs_write_packet(ctx->cbc, pkt, frag);
220 av_log(bsf, AV_LOG_ERROR, "Failed to write packet.\n");
226 ff_cbs_fragment_reset(ctx->cbc, frag);
229 av_packet_unref(pkt);
234 static int av1_metadata_init(AVBSFContext *bsf)
236 AV1MetadataContext *ctx = bsf->priv_data;
237 CodedBitstreamFragment *frag = &ctx->access_unit;
241 err = ff_cbs_init(&ctx->cbc, AV_CODEC_ID_AV1, bsf);
245 if (bsf->par_in->extradata) {
246 err = ff_cbs_read_extradata(ctx->cbc, frag, bsf->par_in);
248 av_log(bsf, AV_LOG_ERROR, "Failed to read extradata.\n");
252 for (i = 0; i < frag->nb_units; i++) {
253 if (frag->units[i].type == AV1_OBU_SEQUENCE_HEADER) {
254 obu = frag->units[i].content;
255 err = av1_metadata_update_sequence_header(bsf, &obu->obu.sequence_header);
261 err = ff_cbs_write_extradata(ctx->cbc, bsf->par_out, frag);
263 av_log(bsf, AV_LOG_ERROR, "Failed to write extradata.\n");
270 ff_cbs_fragment_reset(ctx->cbc, frag);
274 static void av1_metadata_close(AVBSFContext *bsf)
276 AV1MetadataContext *ctx = bsf->priv_data;
278 ff_cbs_fragment_free(ctx->cbc, &ctx->access_unit);
279 ff_cbs_close(&ctx->cbc);
282 #define OFFSET(x) offsetof(AV1MetadataContext, x)
283 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM)
284 static const AVOption av1_metadata_options[] = {
285 { "td", "Temporal Delimiter OBU",
286 OFFSET(td), AV_OPT_TYPE_INT,
287 { .i64 = PASS }, PASS, REMOVE, FLAGS, "td" },
288 { "pass", NULL, 0, AV_OPT_TYPE_CONST,
289 { .i64 = PASS }, .flags = FLAGS, .unit = "td" },
290 { "insert", NULL, 0, AV_OPT_TYPE_CONST,
291 { .i64 = INSERT }, .flags = FLAGS, .unit = "td" },
292 { "remove", NULL, 0, AV_OPT_TYPE_CONST,
293 { .i64 = REMOVE }, .flags = FLAGS, .unit = "td" },
295 { "color_primaries", "Set color primaries (section 6.4.2)",
296 OFFSET(color_primaries), AV_OPT_TYPE_INT,
297 { .i64 = -1 }, -1, 255, FLAGS },
298 { "transfer_characteristics", "Set transfer characteristics (section 6.4.2)",
299 OFFSET(transfer_characteristics), AV_OPT_TYPE_INT,
300 { .i64 = -1 }, -1, 255, FLAGS },
301 { "matrix_coefficients", "Set matrix coefficients (section 6.4.2)",
302 OFFSET(matrix_coefficients), AV_OPT_TYPE_INT,
303 { .i64 = -1 }, -1, 255, FLAGS },
305 { "color_range", "Set color range flag (section 6.4.2)",
306 OFFSET(color_range), AV_OPT_TYPE_INT,
307 { .i64 = -1 }, -1, 1, FLAGS, "cr" },
308 { "tv", "TV (limited) range", 0, AV_OPT_TYPE_CONST,
309 { .i64 = 0 }, .flags = FLAGS, .unit = "cr" },
310 { "pc", "PC (full) range", 0, AV_OPT_TYPE_CONST,
311 { .i64 = 1 }, .flags = FLAGS, .unit = "cr" },
313 { "chroma_sample_position", "Set chroma sample position (section 6.4.2)",
314 OFFSET(chroma_sample_position), AV_OPT_TYPE_INT,
315 { .i64 = -1 }, -1, 3, FLAGS, "csp" },
316 { "unknown", "Unknown chroma sample position", 0, AV_OPT_TYPE_CONST,
317 { .i64 = AV1_CSP_UNKNOWN }, .flags = FLAGS, .unit = "csp" },
318 { "vertical", "Left chroma sample position", 0, AV_OPT_TYPE_CONST,
319 { .i64 = AV1_CSP_VERTICAL }, .flags = FLAGS, .unit = "csp" },
320 { "colocated", "Top-left chroma sample position", 0, AV_OPT_TYPE_CONST,
321 { .i64 = AV1_CSP_COLOCATED }, .flags = FLAGS, .unit = "csp" },
323 { "tick_rate", "Set display tick rate (num_units_in_display_tick / time_scale)",
324 OFFSET(tick_rate), AV_OPT_TYPE_RATIONAL,
325 { .dbl = 0.0 }, 0, UINT_MAX, FLAGS },
326 { "num_ticks_per_picture", "Set display ticks per picture for CFR streams",
327 OFFSET(num_ticks_per_picture), AV_OPT_TYPE_INT,
328 { .i64 = -1 }, -1, INT_MAX, FLAGS },
330 { "delete_padding", "Delete all Padding OBUs",
331 OFFSET(delete_padding), AV_OPT_TYPE_BOOL,
332 { .i64 = 0 }, 0, 1, FLAGS},
337 static const AVClass av1_metadata_class = {
338 .class_name = "av1_metadata_bsf",
339 .item_name = av_default_item_name,
340 .option = av1_metadata_options,
341 .version = LIBAVUTIL_VERSION_INT,
344 static const enum AVCodecID av1_metadata_codec_ids[] = {
345 AV_CODEC_ID_AV1, AV_CODEC_ID_NONE,
348 const AVBitStreamFilter ff_av1_metadata_bsf = {
349 .name = "av1_metadata",
350 .priv_data_size = sizeof(AV1MetadataContext),
351 .priv_class = &av1_metadata_class,
352 .init = &av1_metadata_init,
353 .close = &av1_metadata_close,
354 .filter = &av1_metadata_filter,
355 .codec_ids = av1_metadata_codec_ids,