vf_colorkey.c File Reference

#include "libavutil/opt.h"
#include "libavutil/imgutils.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	ColorkeyContext

Macros
#define	OFFSET(x)   offsetof(ColorkeyContext, x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Functions
static uint8_t	do_colorkey_pixel (ColorkeyContext *ctx, uint8_t r, uint8_t g, uint8_t b)
static int	do_colorkey_slice (AVFilterContext *avctx, void *arg, int jobnr, int nb_jobs)
static int	filter_frame (AVFilterLink *link, AVFrame *frame)
static av_cold int	config_output (AVFilterLink *outlink)
static av_cold int	query_formats (AVFilterContext *avctx)
	AVFILTER_DEFINE_CLASS (colorkey)

Variables
static const AVFilterPad	colorkey_inputs []
static const AVFilterPad	colorkey_outputs []
static const AVOption	colorkey_options []
AVFilter	ff_vf_colorkey

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(ColorkeyContext, x)

Definition at line 148 of file vf_colorkey.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 149 of file vf_colorkey.c.

Function Documentation

do_colorkey_pixel()

static uint8_t do_colorkey_pixel ( ColorkeyContext *  ctx, uint8_t  r, uint8_t  g, uint8_t  b  )

static

Definition at line 39 of file vf_colorkey.c.

Referenced by do_colorkey_slice().

do_colorkey_slice()

static int do_colorkey_slice ( AVFilterContext *  avctx, void *  arg, int  jobnr, int  nb_jobs  )

static

Definition at line 54 of file vf_colorkey.c.

Referenced by filter_frame().

filter_frame()

static int filter_frame ( AVFilterLink *  link, AVFrame *  frame  )

static

Definition at line 80 of file vf_colorkey.c.

config_output()

static av_cold int config_output ( AVFilterLink *  outlink )

static

Definition at line 94 of file vf_colorkey.c.

query_formats()

static av_cold int query_formats ( AVFilterContext *  avctx )

static

Definition at line 111 of file vf_colorkey.c.

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

colorkey

)

Variable Documentation

colorkey_inputs

const AVFilterPad colorkey_inputs[]

static

Initial value:

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

Definition at line 130 of file vf_colorkey.c.

colorkey_outputs

const AVFilterPad colorkey_outputs[]

static

Initial value:

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

Definition at line 139 of file vf_colorkey.c.

colorkey_options

const AVOption colorkey_options[]

static

Initial value:

= {
    { "color", "set the colorkey key color", OFFSET(colorkey_rgba), AV_OPT_TYPE_COLOR, { .str = "black" }, CHAR_MIN, CHAR_MAX, FLAGS },
    { "similarity", "set the colorkey similarity value", OFFSET(similarity), AV_OPT_TYPE_FLOAT, { .dbl = 0.01 }, 0.01, 1.0, FLAGS },
    { "blend", "set the colorkey key blend value", OFFSET(blend), AV_OPT_TYPE_FLOAT, { .dbl = 0.0 }, 0.0, 1.0, FLAGS },
    { NULL }
}

Definition at line 151 of file vf_colorkey.c.

ff_vf_colorkey

AVFilter ff_vf_colorkey

Initial value:

= {
    .name          = "colorkey",
    .description   = NULL_IF_CONFIG_SMALL("Turns a certain color into transparency. Operates on RGB colors."),
    .priv_size     = sizeof(ColorkeyContext),
    .priv_class    = &colorkey_class,
    .query_formats = query_formats,
    .inputs        = colorkey_inputs,
    .outputs       = colorkey_outputs,
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
}

Definition at line 160 of file vf_colorkey.c.