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/common.h"
21 #include "libavutil/opt.h"
27 typedef struct VP9MetadataContext {
30 CodedBitstreamContext *cbc;
31 CodedBitstreamFragment fragment;
36 int color_range_rgb_warned;
40 static int vp9_metadata_filter(AVBSFContext *bsf, AVPacket *pkt)
42 VP9MetadataContext *ctx = bsf->priv_data;
43 CodedBitstreamFragment *frag = &ctx->fragment;
46 err = ff_bsf_get_packet_ref(bsf, pkt);
50 err = ff_cbs_read_packet(ctx->cbc, frag, pkt);
52 av_log(bsf, AV_LOG_ERROR, "Failed to read packet.\n");
56 for (i = 0; i < frag->nb_units; i++) {
57 VP9RawFrame *frame = frag->units[i].content;
58 VP9RawFrameHeader *header = &frame->header;
60 if (ctx->color_space >= 0) {
61 header->color_space = ctx->color_space;
63 if (ctx->color_range >= 0) {
64 if (ctx->color_range == 0 &&
65 header->color_space == VP9_CS_RGB &&
66 !ctx->color_range_rgb_warned) {
67 av_log(bsf, AV_LOG_WARNING, "Warning: color_range cannot "
68 "be set to limited in RGB streams.\n");
69 ctx->color_range_rgb_warned = 1;
71 header->color_range = ctx->color_range;
76 err = ff_cbs_write_packet(ctx->cbc, pkt, frag);
78 av_log(bsf, AV_LOG_ERROR, "Failed to write packet.\n");
84 ff_cbs_fragment_reset(ctx->cbc, frag);
92 static int vp9_metadata_init(AVBSFContext *bsf)
94 VP9MetadataContext *ctx = bsf->priv_data;
96 return ff_cbs_init(&ctx->cbc, AV_CODEC_ID_VP9, bsf);
99 static void vp9_metadata_close(AVBSFContext *bsf)
101 VP9MetadataContext *ctx = bsf->priv_data;
103 ff_cbs_fragment_free(ctx->cbc, &ctx->fragment);
104 ff_cbs_close(&ctx->cbc);
107 #define OFFSET(x) offsetof(VP9MetadataContext, x)
108 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM)
109 static const AVOption vp9_metadata_options[] = {
110 { "color_space", "Set colour space (section 7.2.2)",
111 OFFSET(color_space), AV_OPT_TYPE_INT,
112 { .i64 = -1 }, -1, VP9_CS_RGB, FLAGS, "cs" },
113 { "unknown", "Unknown/unspecified", 0, AV_OPT_TYPE_CONST,
114 { .i64 = VP9_CS_UNKNOWN }, .flags = FLAGS, .unit = "cs" },
115 { "bt601", "ITU-R BT.601-7", 0, AV_OPT_TYPE_CONST,
116 { .i64 = VP9_CS_BT_601 }, .flags = FLAGS, .unit = "cs" },
117 { "bt709", "ITU-R BT.709-6", 0, AV_OPT_TYPE_CONST,
118 { .i64 = VP9_CS_BT_709 }, .flags = FLAGS, .unit = "cs" },
119 { "smpte170", "SMPTE-170", 0, AV_OPT_TYPE_CONST,
120 { .i64 = VP9_CS_SMPTE_170 }, .flags = FLAGS, .unit = "cs" },
121 { "smpte240", "SMPTE-240", 0, AV_OPT_TYPE_CONST,
122 { .i64 = VP9_CS_SMPTE_240 }, .flags = FLAGS, .unit = "cs" },
123 { "bt2020", "ITU-R BT.2020-2", 0, AV_OPT_TYPE_CONST,
124 { .i64 = VP9_CS_BT_2020 }, .flags = FLAGS, .unit = "cs" },
125 { "rgb", "sRGB / IEC 61966-2-1", 0, AV_OPT_TYPE_CONST,
126 { .i64 = VP9_CS_RGB }, .flags = FLAGS, .unit = "cs" },
128 { "color_range", "Set colour range (section 7.2.2)",
129 OFFSET(color_range), AV_OPT_TYPE_INT,
130 { .i64 = -1 }, -1, 1, FLAGS, "cr" },
131 { "tv", "TV (limited) range", 0, AV_OPT_TYPE_CONST,
132 { .i64 = 0 }, .flags = FLAGS, .unit = "cr" },
133 { "pc", "PC (full) range", 0, AV_OPT_TYPE_CONST,
134 { .i64 = 1 }, .flags = FLAGS, .unit = "cr" },
139 static const AVClass vp9_metadata_class = {
140 .class_name = "vp9_metadata_bsf",
141 .item_name = av_default_item_name,
142 .option = vp9_metadata_options,
143 .version = LIBAVUTIL_VERSION_INT,
146 static const enum AVCodecID vp9_metadata_codec_ids[] = {
147 AV_CODEC_ID_VP9, AV_CODEC_ID_NONE,
150 const AVBitStreamFilter ff_vp9_metadata_bsf = {
151 .name = "vp9_metadata",
152 .priv_data_size = sizeof(VP9MetadataContext),
153 .priv_class = &vp9_metadata_class,
154 .init = &vp9_metadata_init,
155 .close = &vp9_metadata_close,
156 .filter = &vp9_metadata_filter,
157 .codec_ids = vp9_metadata_codec_ids,