vf_selectivecolor.c File Reference

#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"

Go to the source code of this file.

Data Structures
struct	process_range
struct	ThreadData
	Used for passing data between threads. More...
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)

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.