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/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/avstring.h"
#include "libavutil/common.h"
#include "libavutil/opt.h"
#include "bsf.h"
#include "cbs.h"
#include "cbs_vp9.h"
typedef struct VP9MetadataContext {
const AVClass *class;
CodedBitstreamContext *cbc;
CodedBitstreamFragment fragment;
int color_space;
int color_range;
int color_range_rgb_warned;
} VP9MetadataContext;
static int vp9_metadata_filter(AVBSFContext *bsf, AVPacket *pkt)
{
VP9MetadataContext *ctx = bsf->priv_data;
CodedBitstreamFragment *frag = &ctx->fragment;
int err, i;
err = ff_bsf_get_packet_ref(bsf, pkt);
if (err < 0)
return err;
err = ff_cbs_read_packet(ctx->cbc, frag, pkt);
if (err < 0) {
av_log(bsf, AV_LOG_ERROR, "Failed to read packet.\n");
goto fail;
}
for (i = 0; i < frag->nb_units; i++) {
VP9RawFrame *frame = frag->units[i].content;
VP9RawFrameHeader *header = &frame->header;
if (ctx->color_space >= 0) {
header->color_space = ctx->color_space;
}
if (ctx->color_range >= 0) {
if (ctx->color_range == 0 &&
header->color_space == VP9_CS_RGB &&
!ctx->color_range_rgb_warned) {
av_log(bsf, AV_LOG_WARNING, "Warning: color_range cannot "
"be set to limited in RGB streams.\n");
ctx->color_range_rgb_warned = 1;
} else {
header->color_range = ctx->color_range;
}
}
}
err = ff_cbs_write_packet(ctx->cbc, pkt, frag);
if (err < 0) {
av_log(bsf, AV_LOG_ERROR, "Failed to write packet.\n");
goto fail;
}
err = 0;
fail:
ff_cbs_fragment_reset(ctx->cbc, frag);
if (err < 0)
av_packet_unref(pkt);
return err;
}
static int vp9_metadata_init(AVBSFContext *bsf)
{
VP9MetadataContext *ctx = bsf->priv_data;
return ff_cbs_init(&ctx->cbc, AV_CODEC_ID_VP9, bsf);
}
static void vp9_metadata_close(AVBSFContext *bsf)
{
VP9MetadataContext *ctx = bsf->priv_data;
ff_cbs_fragment_free(ctx->cbc, &ctx->fragment);
ff_cbs_close(&ctx->cbc);
}
#define OFFSET(x) offsetof(VP9MetadataContext, x)
#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM)
static const AVOption vp9_metadata_options[] = {
{ "color_space", "Set colour space (section 7.2.2)",
OFFSET(color_space), AV_OPT_TYPE_INT,
{ .i64 = -1 }, -1, VP9_CS_RGB, FLAGS, "cs" },
{ "unknown", "Unknown/unspecified", 0, AV_OPT_TYPE_CONST,
{ .i64 = VP9_CS_UNKNOWN }, .flags = FLAGS, .unit = "cs" },
{ "bt601", "ITU-R BT.601-7", 0, AV_OPT_TYPE_CONST,
{ .i64 = VP9_CS_BT_601 }, .flags = FLAGS, .unit = "cs" },
{ "bt709", "ITU-R BT.709-6", 0, AV_OPT_TYPE_CONST,
{ .i64 = VP9_CS_BT_709 }, .flags = FLAGS, .unit = "cs" },
{ "smpte170", "SMPTE-170", 0, AV_OPT_TYPE_CONST,
{ .i64 = VP9_CS_SMPTE_170 }, .flags = FLAGS, .unit = "cs" },
{ "smpte240", "SMPTE-240", 0, AV_OPT_TYPE_CONST,
{ .i64 = VP9_CS_SMPTE_240 }, .flags = FLAGS, .unit = "cs" },
{ "bt2020", "ITU-R BT.2020-2", 0, AV_OPT_TYPE_CONST,
{ .i64 = VP9_CS_BT_2020 }, .flags = FLAGS, .unit = "cs" },
{ "rgb", "sRGB / IEC 61966-2-1", 0, AV_OPT_TYPE_CONST,
{ .i64 = VP9_CS_RGB }, .flags = FLAGS, .unit = "cs" },
{ "color_range", "Set colour range (section 7.2.2)",
OFFSET(color_range), AV_OPT_TYPE_INT,
{ .i64 = -1 }, -1, 1, FLAGS, "cr" },
{ "tv", "TV (limited) range", 0, AV_OPT_TYPE_CONST,
{ .i64 = 0 }, .flags = FLAGS, .unit = "cr" },
{ "pc", "PC (full) range", 0, AV_OPT_TYPE_CONST,
{ .i64 = 1 }, .flags = FLAGS, .unit = "cr" },
{ NULL }
};
static const AVClass vp9_metadata_class = {
.class_name = "vp9_metadata_bsf",
.item_name = av_default_item_name,
.option = vp9_metadata_options,
.version = LIBAVUTIL_VERSION_INT,
};
static const enum AVCodecID vp9_metadata_codec_ids[] = {
AV_CODEC_ID_VP9, AV_CODEC_ID_NONE,
};
const AVBitStreamFilter ff_vp9_metadata_bsf = {
.name = "vp9_metadata",
.priv_data_size = sizeof(VP9MetadataContext),
.priv_class = &vp9_metadata_class,
.init = &vp9_metadata_init,
.close = &vp9_metadata_close,
.filter = &vp9_metadata_filter,
.codec_ids = vp9_metadata_codec_ids,
};
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