#include "libavutil/avassert.h"
#include "libavutil/file.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavcodec/mathops.h"
#include "avfilter.h"
#include "drawutils.h"
#include "formats.h"
#include "internal.h"
#include "video.h"

Data Structures
struct	process_range

struct	ThreadData

struct	SelectiveColorContext

Macros
#define	R 0

#define	G 1

#define	B 2

#define	A 3

#define	OFFSET(x) offsetof(SelectiveColorContext, x)

#define	FLAGS AV_OPT_FLAG_FILTERING_PARAM\|AV_OPT_FLAG_VIDEO_PARAM

#define	RANGE_OPTION(color_name, range) { color_name"s", "adjust "color_name" regions", OFFSET(opt_cmyk_adjust[range]), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS }

#define	DECLARE_RANGE_SCALE_FUNCS(nbits)

#define	READ16(dst)

#define	DECLARE_SELECTIVE_COLOR_FUNC(nbits)

#define	DEF_SELECTIVE_COLOR_FUNC(name, direct, correction_method, nbits)

#define	DEF_SELECTIVE_COLOR_FUNCS(nbits)

Typedefs
typedef int(*	get_range_scale_func) (int r, int g, int b, int min_val, int max_val)

typedef int(*	selective_color_func_type) (AVFilterContext ctx, void td, int jobnr, int nb_jobs)

Enumerations
enum	color_range { RANGE_REDS, RANGE_YELLOWS, RANGE_GREENS, RANGE_CYANS, RANGE_BLUES, RANGE_MAGENTAS, RANGE_WHITES, RANGE_NEUTRALS, RANGE_BLACKS, NB_RANGES }

enum	correction_method { CORRECTION_METHOD_ABSOLUTE, CORRECTION_METHOD_RELATIVE, NB_CORRECTION_METHODS }

Functions
	AVFILTER_DEFINE_CLASS (selectivecolor)

static int	get_rgb_scale (int r, int g, int b, int min_val, int max_val)

static int	get_cmy_scale (int r, int g, int b, int min_val, int max_val)

static int	register_range (SelectiveColorContext *s, int range_id)

static int	parse_psfile (AVFilterContext ctx, const char fname)

static int	config_input (AVFilterLink *inlink)

static int	query_formats (AVFilterContext *ctx)

static int	comp_adjust (int scale, float value, float adjust, float k, int correction_method)

static int	filter_frame (AVFilterLink inlink, AVFrame in)

Variables
static const char *	color_names [NB_RANGES]

static const AVOption	selectivecolor_options []

static const AVFilterPad	selectivecolor_inputs []

static const AVFilterPad	selectivecolor_outputs []

AVFilter	ff_vf_selectivecolor

Macro Definition Documentation

◆ R

#define R 0

See also: http://blog.pkh.me/p/22-understanding-selective-coloring-in-adobe-photoshop.html

Todo:

use integers so it can be made bitexact and a FATE test can be added

Definition at line 39 of file vf_selectivecolor.c.

◆ G

#define G 1

Definition at line 40 of file vf_selectivecolor.c.

◆ B

#define B 2

Definition at line 41 of file vf_selectivecolor.c.

◆ A

#define A 3

Definition at line 42 of file vf_selectivecolor.c.

◆ OFFSET

#define OFFSET ( x ) offsetof(SelectiveColorContext, x)

Definition at line 93 of file vf_selectivecolor.c.

◆ FLAGS

#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 94 of file vf_selectivecolor.c.

◆ RANGE_OPTION

#define RANGE_OPTION	(	color_name,
		range
	)	{ color_name"s", "adjust "color_name" regions", OFFSET(opt_cmyk_adjust[range]), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS }

Definition at line 95 of file vf_selectivecolor.c.

◆ DECLARE_RANGE_SCALE_FUNCS

#define DECLARE_RANGE_SCALE_FUNCS ( nbits )

Value:

static int get_neutrals_scale##nbits(int r, int g, int b, int min_val, int max_val)         \
{                                                                                           \
    /* 1 - (|max-0.5| + |min-0.5|) */                                                       \
    return (((1<<nbits)-1)*2 - (  abs((max_val<<1) - ((1<<nbits)-1))                        \
                                + abs((min_val<<1) - ((1<<nbits)-1))) + 1) >> 1;            \
}                                                                                           \
                                                                                            \
static int get_whites_scale##nbits(int r, int g, int b, int min_val, int max_val)           \
{                                                                                           \
    /* (min - 0.5) * 2 */                                                                   \
    return (min_val<<1) - ((1<<nbits)-1);                                                   \
}                                                                                           \
                                                                                            \
static int get_blacks_scale##nbits(int r, int g, int b, int min_val, int max_val)           \
{                                                                                           \
    /* (0.5 - max) * 2 */                                                                   \
    return ((1<<nbits)-1) - (max_val<<1);                                                   \
}                                                                                           \

Definition at line 127 of file vf_selectivecolor.c.

◆ READ16

#define READ16 ( dst )

Value:

do {                \
    if (size < 2) {                     \
        ret = AVERROR_INVALIDDATA;      \
        goto end;                       \
    }                                   \
    dst = AV_RB16(buf);                 \
    buf  += 2;                          \
    size -= 2;                          \
} while (0)

Referenced by parse_psfile().

◆ DECLARE_SELECTIVE_COLOR_FUNC

#define DECLARE_SELECTIVE_COLOR_FUNC ( nbits )

Definition at line 316 of file vf_selectivecolor.c.

◆ DEF_SELECTIVE_COLOR_FUNC

#define DEF_SELECTIVE_COLOR_FUNC	(	name,
		direct,
		correction_method,
		nbits
	)

Value:

static int selective_color_##name##_##nbits(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)    \
{                                                                                                       \
    return selective_color_##nbits(ctx, arg, jobnr, nb_jobs, direct, correction_method);                \
}

Definition at line 396 of file vf_selectivecolor.c.

◆ DEF_SELECTIVE_COLOR_FUNCS

#define DEF_SELECTIVE_COLOR_FUNCS ( nbits )

Value:

DECLARE_SELECTIVE_COLOR_FUNC(nbits)                                                                     \
DEF_SELECTIVE_COLOR_FUNC(indirect_absolute, 0, CORRECTION_METHOD_ABSOLUTE, nbits)                       \
DEF_SELECTIVE_COLOR_FUNC(indirect_relative, 0, CORRECTION_METHOD_RELATIVE, nbits)                       \
DEF_SELECTIVE_COLOR_FUNC(  direct_absolute, 1, CORRECTION_METHOD_ABSOLUTE, nbits)                       \
DEF_SELECTIVE_COLOR_FUNC(  direct_relative, 1, CORRECTION_METHOD_RELATIVE, nbits)

Definition at line 402 of file vf_selectivecolor.c.

Typedef Documentation

◆ get_range_scale_func

typedef int(* get_range_scale_func) (int r, int g, int b, int min_val, int max_val)

Definition at line 68 of file vf_selectivecolor.c.

◆ selective_color_func_type

typedef int(* selective_color_func_type) (AVFilterContext *ctx, void *td, int jobnr, int nb_jobs)

Definition at line 412 of file vf_selectivecolor.c.

Enumeration Type Documentation

◆ color_range

enum color_range

Enumerator
RANGE_REDS
RANGE_YELLOWS
RANGE_GREENS
RANGE_CYANS
RANGE_BLUES
RANGE_MAGENTAS
RANGE_WHITES
RANGE_NEUTRALS
RANGE_BLACKS
NB_RANGES

Definition at line 44 of file vf_selectivecolor.c.

◆ correction_method

enum correction_method

Enumerator
CORRECTION_METHOD_ABSOLUTE
CORRECTION_METHOD_RELATIVE
NB_CORRECTION_METHODS

Definition at line 58 of file vf_selectivecolor.c.

Function Documentation

◆ AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS ( selectivecolor )

◆ get_rgb_scale()

static int get_rgb_scale	(	int	r,
		int	g,
		int	b,
		int	min_val,
		int	max_val
	)

static

Definition at line 117 of file vf_selectivecolor.c.

Referenced by register_range().

◆ get_cmy_scale()

static int get_cmy_scale	(	int	r,
		int	g,
		int	b,
		int	min_val,
		int	max_val
	)

static

Definition at line 122 of file vf_selectivecolor.c.

Referenced by register_range().

◆ register_range()

static int register_range	(	SelectiveColorContext *	s,
		int	range_id
	)

static

Definition at line 150 of file vf_selectivecolor.c.

Referenced by config_input(), and parse_psfile().

◆ parse_psfile()

static int parse_psfile	(	AVFilterContext *	ctx,
		const char *	fname
	)

static

Definition at line 185 of file vf_selectivecolor.c.

Referenced by config_input().

◆ config_input()

static int config_input ( AVFilterLink * inlink )

static

Definition at line 238 of file vf_selectivecolor.c.

◆ query_formats()

static int query_formats ( AVFilterContext * ctx )

static

Definition at line 288 of file vf_selectivecolor.c.

◆ comp_adjust()

static int comp_adjust	(	int	scale,
		float	value,
		float	adjust,
		float	k,
		int	correction_method
	)

inlinestatic

Definition at line 306 of file vf_selectivecolor.c.

◆ filter_frame()

static int filter_frame	(	AVFilterLink *	inlink,
		AVFrame *	in
	)

static

Definition at line 414 of file vf_selectivecolor.c.

Variable Documentation

◆ color_names

const char* color_names[NB_RANGES]

static

Initial value:

= {
    "red", "yellow", "green", "cyan", "blue", "magenta", "white", "neutral", "black"
}

Definition at line 64 of file vf_selectivecolor.c.

Referenced by config_input(), register_range(), and test_av_parse_color().

◆ selectivecolor_options

const AVOption selectivecolor_options[]

static

Initial value:

= {
    { "correction_method", "select correction method", OFFSET(correction_method), AV_OPT_TYPE_INT, {.i64 = CORRECTION_METHOD_ABSOLUTE}, 0, NB_CORRECTION_METHODS-1, FLAGS, "correction_method" },
        { "absolute", NULL, 0, AV_OPT_TYPE_CONST, {.i64=CORRECTION_METHOD_ABSOLUTE}, INT_MIN, INT_MAX, FLAGS, "correction_method" },
        { "relative", NULL, 0, AV_OPT_TYPE_CONST, {.i64=CORRECTION_METHOD_RELATIVE}, INT_MIN, INT_MAX, FLAGS, "correction_method" },
    RANGE_OPTION("red",     RANGE_REDS),
    RANGE_OPTION("yellow",  RANGE_YELLOWS),
    RANGE_OPTION("green",   RANGE_GREENS),
    RANGE_OPTION("cyan",    RANGE_CYANS),
    RANGE_OPTION("blue",    RANGE_BLUES),
    RANGE_OPTION("magenta", RANGE_MAGENTAS),
    RANGE_OPTION("white",   RANGE_WHITES),
    RANGE_OPTION("neutral", RANGE_NEUTRALS),
    RANGE_OPTION("black",   RANGE_BLACKS),
    { "psfile", "set Photoshop selectivecolor file name", OFFSET(psfile), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
    { NULL }
}

Definition at line 98 of file vf_selectivecolor.c.

◆ selectivecolor_inputs

const AVFilterPad selectivecolor_inputs[]

static

Initial value:

= {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .filter_frame = filter_frame,
        .config_props = config_input,
    },
    { NULL }
}

Definition at line 455 of file vf_selectivecolor.c.

◆ selectivecolor_outputs

const AVFilterPad selectivecolor_outputs[]

static

Initial value:

= {
    {
        .name = "default",
        .type = AVMEDIA_TYPE_VIDEO,
    },
    { NULL }
}

Definition at line 465 of file vf_selectivecolor.c.

◆ ff_vf_selectivecolor

AVFilter ff_vf_selectivecolor

Initial value:

= {
    .name          = "selectivecolor",
    .description   = NULL_IF_CONFIG_SMALL("Apply CMYK adjustments to specific color ranges."),
    .priv_size     = sizeof(SelectiveColorContext),
    .query_formats = query_formats,
    .inputs        = selectivecolor_inputs,
    .outputs       = selectivecolor_outputs,
    .priv_class    = &selectivecolor_class,
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
}

Definition at line 473 of file vf_selectivecolor.c.

Data Structures

Macros

Typedefs

Enumerations

Functions

Variables

Macro Definition Documentation

◆ R

◆ G

◆ B

◆ A

◆ OFFSET

◆ FLAGS

◆ RANGE_OPTION

◆ DECLARE_RANGE_SCALE_FUNCS

◆ READ16

◆ DECLARE_SELECTIVE_COLOR_FUNC

◆ DEF_SELECTIVE_COLOR_FUNC

◆ DEF_SELECTIVE_COLOR_FUNCS

Typedef Documentation

◆ get_range_scale_func

◆ selective_color_func_type

Enumeration Type Documentation

◆ color_range

◆ correction_method

Function Documentation

◆ AVFILTER_DEFINE_CLASS()

◆ get_rgb_scale()

◆ get_cmy_scale()

◆ register_range()

◆ parse_psfile()

◆ config_input()

◆ query_formats()

◆ comp_adjust()

◆ filter_frame()

Variable Documentation

◆ color_names

◆ selectivecolor_options

◆ selectivecolor_inputs

◆ selectivecolor_outputs

◆ ff_vf_selectivecolor