2 * Prores Metadata bitstream filter
3 * Copyright (c) 2018 Jokyo Images
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 * Prores Metadata bitstream filter
25 * set frame colorspace property
28 #include "libavutil/common.h"
29 #include "libavutil/intreadwrite.h"
30 #include "libavutil/opt.h"
33 typedef struct ProresMetadataContext {
37 int transfer_characteristics;
38 int matrix_coefficients;
39 } ProresMetadataContext;
41 static int prores_metadata(AVBSFContext *bsf, AVPacket *pkt)
43 ProresMetadataContext *ctx = bsf->priv_data;
48 ret = ff_bsf_get_packet_ref(bsf, pkt);
52 ret = av_packet_make_writable(pkt);
59 /* check start of the prores frame */
61 av_log(bsf, AV_LOG_ERROR, "not enough data in prores frame\n");
62 ret = AVERROR_INVALIDDATA;
66 if (AV_RL32(buf + 4) != AV_RL32("icpf")) {
67 av_log(bsf, AV_LOG_ERROR, "invalid frame header\n");
68 ret = AVERROR_INVALIDDATA;
72 if (AV_RB16(buf + 8) < 28) {
73 av_log(bsf, AV_LOG_ERROR, "invalid frame header size\n");
74 ret = AVERROR_INVALIDDATA;
78 /* set the new values */
79 if (ctx->color_primaries != -1)
80 buf[8+14] = ctx->color_primaries;
81 if (ctx->transfer_characteristics != -1)
82 buf[8+15] = ctx->transfer_characteristics;
83 if (ctx->matrix_coefficients != -1)
84 buf[8+16] = ctx->matrix_coefficients;
92 static const enum AVCodecID codec_ids[] = {
93 AV_CODEC_ID_PRORES, AV_CODEC_ID_NONE,
96 static int prores_metadata_init(AVBSFContext *bsf)
98 ProresMetadataContext *ctx = bsf->priv_data;
100 switch (ctx->color_primaries) {
103 case AVCOL_PRI_BT709:
104 case AVCOL_PRI_BT470BG:
105 case AVCOL_PRI_SMPTE170M:
106 case AVCOL_PRI_BT2020:
107 case AVCOL_PRI_SMPTE431:
108 case AVCOL_PRI_SMPTE432:
111 av_log(bsf, AV_LOG_ERROR, "Color primaries %d is not a valid value\n", ctx->color_primaries);
112 return AVERROR(EINVAL);
115 switch (ctx->matrix_coefficients) {
118 case AVCOL_SPC_BT709:
119 case AVCOL_SPC_SMPTE170M:
120 case AVCOL_SPC_BT2020_NCL:
123 av_log(bsf, AV_LOG_ERROR, "Colorspace %d is not a valid value\n", ctx->matrix_coefficients);
124 return AVERROR(EINVAL);
130 #define OFFSET(x) offsetof(ProresMetadataContext, x)
131 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_BSF_PARAM)
132 static const AVOption options[] = {
133 {"color_primaries", "select color primaries", OFFSET(color_primaries), AV_OPT_TYPE_INT, {.i64=-1}, -1, AVCOL_PRI_SMPTE432, FLAGS, "color_primaries"},
134 {"auto", "keep the same color primaries", 0, AV_OPT_TYPE_CONST, {.i64=-1}, INT_MIN, INT_MAX, FLAGS, "color_primaries"},
135 {"unknown", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, INT_MIN, INT_MAX, FLAGS, "color_primaries"},
136 {"bt709", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT709}, INT_MIN, INT_MAX, FLAGS, "color_primaries"},
137 {"bt470bg", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT470BG}, INT_MIN, INT_MAX, FLAGS, "color_primaries"},
138 {"smpte170m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE170M}, INT_MIN, INT_MAX, FLAGS, "color_primaries"},
139 {"bt2020", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT2020}, INT_MIN, INT_MAX, FLAGS, "color_primaries"},
140 {"smpte431", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE431}, INT_MIN, INT_MAX, FLAGS, "color_primaries"},
141 {"smpte432", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE432}, INT_MIN, INT_MAX, FLAGS, "color_primaries"},
143 {"color_trc", "select color transfer", OFFSET(transfer_characteristics), AV_OPT_TYPE_INT, {.i64=-1}, -1, AVCOL_TRC_BT709, FLAGS, "color_trc"},
144 {"auto", "keep the same color transfer", 0, AV_OPT_TYPE_CONST, {.i64=-1}, INT_MIN, INT_MAX, FLAGS, "color_trc"},
145 {"unknown", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, INT_MIN, INT_MAX, FLAGS, "color_trc"},
146 {"bt709", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_BT709}, INT_MIN, INT_MAX, FLAGS, "color_trc"},
148 {"colorspace", "select colorspace", OFFSET(matrix_coefficients), AV_OPT_TYPE_INT, {.i64=-1}, -1, AVCOL_SPC_BT2020_NCL, FLAGS, "colorspace"},
149 {"auto", "keep the same colorspace", 0, AV_OPT_TYPE_CONST, {.i64=-1}, INT_MIN, INT_MAX, FLAGS, "colorspace"},
150 {"unknown", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, INT_MIN, INT_MAX, FLAGS, "colorspace"},
151 {"bt709", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_BT709}, INT_MIN, INT_MAX, FLAGS, "colorspace"},
152 {"smpte170m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_SMPTE170M}, INT_MIN, INT_MAX, FLAGS, "colorspace"},
153 {"bt2020nc", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_BT2020_NCL}, INT_MIN, INT_MAX, FLAGS, "colorspace"},
158 static const AVClass prores_metadata_class = {
159 .class_name = "prores_metadata_bsf",
160 .item_name = av_default_item_name,
162 .version = LIBAVUTIL_VERSION_INT,
165 const AVBitStreamFilter ff_prores_metadata_bsf = {
166 .name = "prores_metadata",
167 .init = prores_metadata_init,
168 .filter = prores_metadata,
169 .priv_data_size = sizeof(ProresMetadataContext),
170 .priv_class = &prores_metadata_class,
171 .codec_ids = codec_ids,