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lavfi: add vf_iccgen for generating ICC profiles

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This filter is designed to specifically cover the task of generating ICC
profiles (and attaching them to output frames) on demand. Other tasks,
such as ICC profile loading/stripping, or ICC profile application, are
better left to separate filters (or included into e.g. vf_setparams).

Signed-off-by: Niklas Haas <git@haasn.dev>
release/5.1
Niklas Haas 3 years ago
parent b9a25963f7
commit 5cfeaeef0c
5 changed files with 205 additions and 0 deletions
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  1. 1
      configure
  2. 21
      doc/filters.texi
  3. 1
      libavfilter/Makefile
  4. 1
      libavfilter/allfilters.c
  5. 181
      libavfilter/vf_iccgen.c

1
configure vendored
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@ -3665,6 +3665,7 @@ gblur_vulkan_filter_deps="vulkan spirv_compiler"
hflip_vulkan_filter_deps="vulkan spirv_compiler"
histeq_filter_deps="gpl"
hqdn3d_filter_deps="gpl"
iccgen_filter_deps="lcms2"
interlace_filter_deps="gpl"
kerndeint_filter_deps="gpl"
ladspa_filter_deps="ladspa libdl"

21
doc/filters.texi
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@ -14384,6 +14384,27 @@ By default value is 0.
The @code{hysteresis} filter also supports the @ref{framesync} options.
@section iccgen
Generate ICC profiles and attach them to frames.
This filter accepts the following options:
@table @option
@item color_primaries
@item color_trc
Configure the colorspace that the ICC profile will be generated for. The
default value of @code{auto} infers the value from the input frame's metadata,
defaulting to BT.709/sRGB as appropriate.
See the @ref{setparams} filter for a list of possible values, but note that
@code{unknown} are not valid values for this filter.
@item force
If true, an ICC profile will be generated even if it would overwrite an
already existing ICC profile. Disabled by default.
@end table
@section identity
Obtain the identity score between two input videos.

1
libavfilter/Makefile
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@ -322,6 +322,7 @@ OBJS-$(CONFIG_HWMAP_FILTER) += vf_hwmap.o
OBJS-$(CONFIG_HWUPLOAD_CUDA_FILTER) += vf_hwupload_cuda.o
OBJS-$(CONFIG_HWUPLOAD_FILTER) += vf_hwupload.o
OBJS-$(CONFIG_HYSTERESIS_FILTER) += vf_hysteresis.o framesync.o
OBJS-$(CONFIG_ICCGEN_FILTER) += vf_iccgen.o fflcms2.o colorspace.o
OBJS-$(CONFIG_IDENTITY_FILTER) += vf_identity.o
OBJS-$(CONFIG_IDET_FILTER) += vf_idet.o
OBJS-$(CONFIG_IL_FILTER) += vf_il.o

1
libavfilter/allfilters.c
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@ -305,6 +305,7 @@ extern const AVFilter ff_vf_hwmap;
extern const AVFilter ff_vf_hwupload;
extern const AVFilter ff_vf_hwupload_cuda;
extern const AVFilter ff_vf_hysteresis;
extern const AVFilter ff_vf_iccgen;
extern const AVFilter ff_vf_identity;
extern const AVFilter ff_vf_idet;
extern const AVFilter ff_vf_il;

181
libavfilter/vf_iccgen.c
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@ -0,0 +1,181 @@
/*
* Copyright (c) 2022 Niklas Haas
* 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
*/
/**
* @file
* filter for generating ICC profiles
*/
#include <lcms2.h>
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "fflcms2.h"
#include "internal.h"
typedef struct IccGenContext {
const AVClass *class;
FFIccContext icc;
/* options */
int color_prim;
int color_trc;
int force;
/* (cached) generated ICC profile */
cmsHPROFILE profile;
int profile_prim;
int profile_trc;
} IccGenContext;
#define OFFSET(x) offsetof(IccGenContext, x)
#define VF AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
static const AVOption iccgen_options[] = {
{"color_primaries", "select color primaries", OFFSET(color_prim), AV_OPT_TYPE_INT, {.i64=0}, 0, AVCOL_PRI_NB-1, VF, "color_primaries"},
{"auto", "infer based on frame", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, VF, "color_primaries"},
{"bt709", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT709}, 0, 0, VF, "color_primaries"},
{"bt470m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT470M}, 0, 0, VF, "color_primaries"},
{"bt470bg", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT470BG}, 0, 0, VF, "color_primaries"},
{"smpte170m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE170M}, 0, 0, VF, "color_primaries"},
{"smpte240m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE240M}, 0, 0, VF, "color_primaries"},
{"film", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_FILM}, 0, 0, VF, "color_primaries"},
{"bt2020", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT2020}, 0, 0, VF, "color_primaries"},
{"smpte428", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE428}, 0, 0, VF, "color_primaries"},
{"smpte431", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE431}, 0, 0, VF, "color_primaries"},
{"smpte432", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE432}, 0, 0, VF, "color_primaries"},
{"jedec-p22", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_JEDEC_P22}, 0, 0, VF, "color_primaries"},
{"ebu3213", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_EBU3213}, 0, 0, VF, "color_primaries"},
{"color_trc", "select color transfer", OFFSET(color_trc), AV_OPT_TYPE_INT, {.i64=0}, 0, AVCOL_TRC_NB-1, VF, "color_trc"},
{"auto", "infer based on frame", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, VF, "color_trc"},
{"bt709", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_BT709}, 0, 0, VF, "color_trc"},
{"bt470m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_GAMMA22}, 0, 0, VF, "color_trc"},
{"bt470bg", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_GAMMA28}, 0, 0, VF, "color_trc"},
{"smpte170m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_SMPTE170M}, 0, 0, VF, "color_trc"},
{"smpte240m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_SMPTE240M}, 0, 0, VF, "color_trc"},
{"linear", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_LINEAR}, 0, 0, VF, "color_trc"},
{"iec61966-2-4", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_IEC61966_2_4}, 0, 0, VF, "color_trc"},
{"bt1361e", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_BT1361_ECG}, 0, 0, VF, "color_trc"},
{"iec61966-2-1", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_IEC61966_2_1}, 0, 0, VF, "color_trc"},
{"bt2020-10", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_BT2020_10}, 0, 0, VF, "color_trc"},
{"bt2020-12", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_BT2020_12}, 0, 0, VF, "color_trc"},
{"smpte2084", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_SMPTE2084}, 0, 0, VF, "color_trc"},
{"arib-std-b67", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_ARIB_STD_B67}, 0, 0, VF, "color_trc"},
{ "force", "overwrite existing ICC profile", OFFSET(force), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, VF },
{ NULL }
};
AVFILTER_DEFINE_CLASS(iccgen);
static av_cold void iccgen_uninit(AVFilterContext *avctx)
{
IccGenContext *s = avctx->priv;
cmsCloseProfile(s->profile);
ff_icc_context_uninit(&s->icc);
}
static av_cold int iccgen_init(AVFilterContext *avctx)
{
IccGenContext *s = avctx->priv;
return ff_icc_context_init(&s->icc, avctx);
}
static int iccgen_filter_frame(AVFilterLink *inlink, AVFrame *frame)
{
AVFilterContext *avctx = inlink->dst;
IccGenContext *s = avctx->priv;
enum AVColorTransferCharacteristic trc;
enum AVColorPrimaries prim;
int ret;
if (av_frame_get_side_data(frame, AV_FRAME_DATA_ICC_PROFILE)) {
if (s->force) {
av_frame_remove_side_data(frame, AV_FRAME_DATA_ICC_PROFILE);
} else {
return ff_filter_frame(inlink->dst->outputs[0], frame);
}
}
trc = s->color_trc ? s->color_trc : frame->color_trc;
if (trc == AVCOL_TRC_UNSPECIFIED) {
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
if (!desc)
return AVERROR_INVALIDDATA;
if ((desc->flags & AV_PIX_FMT_FLAG_RGB) || frame->color_range == AVCOL_RANGE_JPEG) {
/* Default to sRGB for RGB or full-range content */
trc = AVCOL_TRC_IEC61966_2_1;
} else {
/* Default to an ITU-R transfer depending on the bit-depth */
trc = desc->comp[0].depth >= 12 ? AVCOL_TRC_BT2020_12
: desc->comp[0].depth >= 10 ? AVCOL_TRC_BT2020_10
: AVCOL_TRC_BT709;
}
}
prim = s->color_prim ? s->color_prim : frame->color_primaries;
if (prim == AVCOL_PRI_UNSPECIFIED) {
/* Simply always default to sRGB/BT.709 primaries to avoid surprises */
prim = AVCOL_PRI_BT709;
}
if (s->profile && prim != s->profile_prim && trc != s->profile_trc) {
cmsCloseProfile(s->profile);
s->profile = NULL;
}
if (!s->profile) {
if ((ret = ff_icc_profile_generate(&s->icc, prim, trc, &s->profile)) < 0)
return ret;
s->profile_prim = prim;
s->profile_trc = trc;
}
if ((ret = ff_icc_profile_attach(&s->icc, s->profile, frame)) < 0)
return ret;
return ff_filter_frame(inlink->dst->outputs[0], frame);
}
static const AVFilterPad iccgen_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = iccgen_filter_frame,
},
};
static const AVFilterPad iccgen_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
},
};
const AVFilter ff_vf_iccgen = {
.name = "iccgen",
.description = NULL_IF_CONFIG_SMALL("Generate and attach ICC profiles."),
.priv_size = sizeof(IccGenContext),
.priv_class = &iccgen_class,
.flags = AVFILTER_FLAG_METADATA_ONLY,
.init = &iccgen_init,
.uninit = &iccgen_uninit,
FILTER_INPUTS(iccgen_inputs),
FILTER_OUTPUTS(iccgen_outputs),
};
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