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avfilter: add colorchart video filter

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release/5.1
Paul B Mahol 3 years ago
parent 43ea19fef4
commit 16463520d9
6 changed files with 176 additions and 1 deletions
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  1. 1
      Changelog
  2. 19
      doc/filters.texi
  3. 1
      libavfilter/Makefile
  4. 1
      libavfilter/allfilters.c
  5. 2
      libavfilter/version.h
  6. 153
      libavfilter/vsrc_testsrc.c

1
Changelog
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@ -12,6 +12,7 @@ version 5.1:
- feedback video filter
- pixelize video filter
- colormap video filter
- colorchart video source filter
version 5.0:

19
doc/filters.texi
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@ -26287,6 +26287,7 @@ ffplay -f lavfi life=s=300x200:mold=10:r=60:ratio=0.1:death_color=#C83232:life_c
@anchor{allrgb}
@anchor{allyuv}
@anchor{color}
@anchor{colorchart}
@anchor{colorspectrum}
@anchor{haldclutsrc}
@anchor{nullsrc}
@ -26306,6 +26307,8 @@ The @code{allyuv} source returns frames of size 4096x4096 of all yuv colors.
The @code{color} source provides an uniformly colored input.
The @code{colorchart} source provides a colors checker chart.
The @code{colorspectrum} source provides a color spectrum input.
The @code{haldclutsrc} source provides an identity Hald CLUT. See also
@ -26409,6 +26412,22 @@ Set the type of the color spectrum, only available in the
@item white
@item all
@end table
@item patch_size
Set patch size of single color patch, only available in the
@code{colorchart} source. Default is @code{64x64}.
@item preset
Set colorchecker colors preset, only available in the
@code{colorchart} source.
Available values are:
@table @samp
@item reference
@item skintones
@end table
Default value is @code{reference}.
@end table
@subsection Examples

1
libavfilter/Makefile
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@ -541,6 +541,7 @@ OBJS-$(CONFIG_ALLRGB_FILTER) += vsrc_testsrc.o
OBJS-$(CONFIG_ALLYUV_FILTER) += vsrc_testsrc.o
OBJS-$(CONFIG_CELLAUTO_FILTER) += vsrc_cellauto.o
OBJS-$(CONFIG_COLOR_FILTER) += vsrc_testsrc.o
OBJS-$(CONFIG_COLORCHART_FILTER) += vsrc_testsrc.o
OBJS-$(CONFIG_COLORSPECTRUM_FILTER) += vsrc_testsrc.o
OBJS-$(CONFIG_COREIMAGESRC_FILTER) += vf_coreimage.o
OBJS-$(CONFIG_FREI0R_SRC_FILTER) += vf_frei0r.o

1
libavfilter/allfilters.c
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@ -512,6 +512,7 @@ extern const AVFilter ff_vsrc_allrgb;
extern const AVFilter ff_vsrc_allyuv;
extern const AVFilter ff_vsrc_cellauto;
extern const AVFilter ff_vsrc_color;
extern const AVFilter ff_vsrc_colorchart;
extern const AVFilter ff_vsrc_colorspectrum;
extern const AVFilter ff_vsrc_coreimagesrc;
extern const AVFilter ff_vsrc_frei0r_src;

2
libavfilter/version.h
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@ -31,7 +31,7 @@
#include "version_major.h"
#define LIBAVFILTER_VERSION_MINOR 34
#define LIBAVFILTER_VERSION_MINOR 35
#define LIBAVFILTER_VERSION_MICRO 100

153
libavfilter/vsrc_testsrc.c
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@ -55,6 +55,7 @@
typedef struct TestSourceContext {
const AVClass *class;
int w, h;
int pw, ph;
unsigned int nb_frame;
AVRational time_base, frame_rate;
int64_t pts;
@ -1885,3 +1886,155 @@ const AVFilter ff_vsrc_colorspectrum = {
};
#endif /* CONFIG_COLORSPECTRUM_FILTER */
#if CONFIG_COLORCHART_FILTER
static const AVOption colorchart_options[] = {
COMMON_OPTIONS_NOSIZE
{ "patch_size", "set the single patch size", OFFSET(pw), AV_OPT_TYPE_IMAGE_SIZE, {.str="64x64"}, 0, 0, FLAGS },
{ "preset", "set the color checker chart preset", OFFSET(type), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, "preset" },
{ "reference", "reference", 0, AV_OPT_TYPE_CONST,{.i64=0}, 0, 0, FLAGS, "preset" },
{ "skintones", "skintones", 0, AV_OPT_TYPE_CONST,{.i64=1}, 0, 0, FLAGS, "preset" },
{ NULL }
};
AVFILTER_DEFINE_CLASS(colorchart);
static const uint8_t reference_colors[][3] = {
{ 115, 82, 68 }, // dark skin
{ 194, 150, 130 }, // light skin
{ 98, 122, 157 }, // blue sky
{ 87, 108, 67 }, // foliage
{ 133, 128, 177 }, // blue flower
{ 103, 189, 170 }, // bluish green
{ 214, 126, 44 }, // orange
{ 80, 91, 166 }, // purple red
{ 193, 90, 99 }, // moderate red
{ 94, 60, 108 }, // purple
{ 157, 188, 64 }, // yellow green
{ 224, 163, 46 }, // orange yellow
{ 56, 61, 150 }, // blue
{ 70, 148, 73 }, // green
{ 175, 54, 60 }, // red
{ 233, 199, 31 }, // yellow
{ 187, 86, 149 }, // magenta
{ 8, 133, 161 }, // cyan
{ 243, 243, 242 }, // white
{ 200, 200, 200 }, // neutral 8
{ 160, 160, 160 }, // neutral 65
{ 122, 122, 121 }, // neutral 5
{ 85, 85, 85 }, // neutral 35
{ 52, 52, 52 }, // black
};
static const uint8_t skintones_colors[][3] = {
{ 54, 38, 43 },
{ 105, 43, 42 },
{ 147, 43, 43 },
{ 77, 41, 42 },
{ 134, 43, 41 },
{ 201, 134, 118 },
{ 59, 41, 41 },
{ 192, 103, 76 },
{ 208, 156, 141 },
{ 152, 82, 61 },
{ 162, 132, 118 },
{ 212, 171, 150 },
{ 205, 91, 31 },
{ 164, 100, 55 },
{ 204, 136, 95 },
{ 178, 142, 116 },
{ 210, 152, 108 },
{ 217, 167, 131 },
{ 206, 166, 126 },
{ 208, 163, 97 },
{ 245, 180, 0 },
{ 212, 184, 125 },
{ 179, 165, 150 },
{ 196, 184, 105 },
};
typedef struct ColorChartPreset {
int w, h;
const uint8_t (*colors)[3];
} ColorChartPreset;
static const ColorChartPreset colorchart_presets[] = {
{ 6, 4, reference_colors, },
{ 6, 4, skintones_colors, },
};
static int colorchart_config_props(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->src;
TestSourceContext *s = ctx->priv;
av_assert0(ff_draw_init(&s->draw, inlink->format, 0) >= 0);
if (av_image_check_size(s->w, s->h, 0, ctx) < 0)
return AVERROR(EINVAL);
return config_props(inlink);
}
static void colorchart_fill_picture(AVFilterContext *ctx, AVFrame *frame)
{
TestSourceContext *test = ctx->priv;
const int preset = test->type;
const int w = colorchart_presets[preset].w;
const int h = colorchart_presets[preset].h;
const int pw = test->pw;
const int ph = test->pw;
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++) {
uint32_t pc = AV_RB24(colorchart_presets[preset].colors[y * w + x]);
FFDrawColor color;
set_color(test, &color, pc);
ff_fill_rectangle(&test->draw, &color, frame->data, frame->linesize,
x * pw, y * ph, pw, ph);
}
}
}
static av_cold int colorchart_init(AVFilterContext *ctx)
{
TestSourceContext *test = ctx->priv;
const int preset = test->type;
const int w = colorchart_presets[preset].w;
const int h = colorchart_presets[preset].h;
test->w = w * test->pw;
test->h = h * test->ph;
test->draw_once = 1;
test->fill_picture_fn = colorchart_fill_picture;
return init(ctx);
}
static const AVFilterPad avfilter_vsrc_colorchart_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = colorchart_config_props,
},
};
const AVFilter ff_vsrc_colorchart = {
.name = "colorchart",
.description = NULL_IF_CONFIG_SMALL("Generate color checker chart."),
.priv_size = sizeof(TestSourceContext),
.priv_class = &colorchart_class,
.init = colorchart_init,
.uninit = uninit,
.activate = activate,
.inputs = NULL,
FILTER_OUTPUTS(avfilter_vsrc_colorchart_outputs),
FILTER_SINGLE_PIXFMT(AV_PIX_FMT_GBRP),
};
#endif /* CONFIG_COLORCHART_FILTER */

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