vf_maskfun.c File Reference

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

Go to the source code of this file.

Data Structures
struct	MaskFunContext

Macros
#define	OFFSET(x)   offsetof(MaskFunContext, x)
#define	VF   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
#define	GETSUM(name, type, div)
#define	MASKFUN(name, type, div)

Functions
	AVFILTER_DEFINE_CLASS (maskfun)
static int	query_formats (AVFilterContext *ctx)
static int	filter_frame (AVFilterLink *inlink, AVFrame *frame)
static int	config_input (AVFilterLink *inlink)

Variables
static const AVOption	maskfun_options []
static const AVFilterPad	maskfun_inputs []
static const AVFilterPad	maskfun_outputs []
AVFilter	ff_vf_maskfun

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(MaskFunContext, x)

Definition at line 49 of file vf_maskfun.c.

VF

#define VF   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 50 of file vf_maskfun.c.

GETSUM

#define GETSUM	(		name,
			type,
			div
	)

Value:

static int getsum##name(AVFilterContext *ctx, AVFrame *out)  \
{                                                            \
    MaskFunContext *s = ctx->priv;                           \
    uint64_t sum = 0;                                        \
    int p;                                                   \
                                                             \
    for (p = 0; p < s->nb_planes; p++) {                     \
        const int linesize = out->linesize[p] / div;         \
        const int w = s->width[p];                           \
        const int h = s->height[p];                          \
        type *dst = (type *)out->data[p];                    \
                                                             \
        if (!((1 << p) & s->planes))                         \
            continue;                                        \
                                                             \
        for (int y = 0; y < h; y++) {                        \
            for (int x = 0; x < w; x++)                      \
                sum += dst[x];                               \
            if (sum >= s->max_sum)                           \
                return 1;                                    \
            dst += linesize;                                 \
        }                                                    \
    }                                                        \
                                                             \
    return 0;                                                \
}

Definition at line 114 of file vf_maskfun.c.

MASKFUN

#define MASKFUN	(		name,
			type,
			div
	)

Definition at line 145 of file vf_maskfun.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

maskfun

)

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 63 of file vf_maskfun.c.

filter_frame()

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

static

Definition at line 89 of file vf_maskfun.c.

config_input()

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 185 of file vf_maskfun.c.

Variable Documentation

maskfun_options

const AVOption maskfun_options[]

static

Initial value:

= {
    { "low",    "set low threshold",  OFFSET(low),    AV_OPT_TYPE_INT, {.i64=10},  0, UINT16_MAX, VF },
    { "high",   "set high threshold", OFFSET(high),   AV_OPT_TYPE_INT, {.i64=10},  0, UINT16_MAX, VF },
    { "planes", "set planes",         OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF,        VF },
    { "fill",   "set fill value",     OFFSET(fill),   AV_OPT_TYPE_INT, {.i64=0},   0, UINT16_MAX, VF },
    { "sum",    "set sum value",      OFFSET(sum),    AV_OPT_TYPE_INT, {.i64=10},  0, UINT16_MAX, VF },
    { NULL }
}

Definition at line 52 of file vf_maskfun.c.

maskfun_inputs

const AVFilterPad maskfun_inputs[]

static

Initial value:

= {
    {
        .name           = "default",
        .type           = AVMEDIA_TYPE_VIDEO,
        .filter_frame   = filter_frame,
        .config_props   = config_input,
        .needs_writable = 1,
    },
    { NULL }
}

Definition at line 251 of file vf_maskfun.c.

maskfun_outputs

const AVFilterPad maskfun_outputs[]

static

Initial value:

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

Definition at line 262 of file vf_maskfun.c.

ff_vf_maskfun

AVFilter ff_vf_maskfun

Initial value:

= {
    .name          = "maskfun",
    .description   = NULL_IF_CONFIG_SMALL("Create Mask."),
    .priv_size     = sizeof(MaskFunContext),
    .query_formats = query_formats,
    .inputs        = maskfun_inputs,
    .outputs       = maskfun_outputs,
    .priv_class    = &maskfun_class,
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
}

Definition at line 270 of file vf_maskfun.c.