vf_maskfun.c File Reference

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

Go to the source code of this file.

Data Structures
struct	MaskFunContext

Macros
#define	OFFSET(x)
#define	VFT   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
#define	GETSUM(name, type, div)
#define	MASKFUN(name, type, div)

Functions
	AVFILTER_DEFINE_CLASS (maskfun)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)
static void	fill_frame (AVFilterContext *ctx)
static void	set_max_sum (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static int	process_command (AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
static av_cold void	uninit (AVFilterContext *ctx)

Variables
static const AVOption	maskfun_options []
static enum AVPixelFormat	pix_fmts []
static const AVFilterPad	maskfun_inputs []
const FFFilter	ff_vf_maskfun

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(MaskFunContext, x)

Definition at line 50 of file vf_maskfun.c.

VFT

#define VFT   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM

Definition at line 51 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->planewidth[p];                      \
        const int h = s->planeheight[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 123 of file vf_maskfun.c.

MASKFUN

#define MASKFUN	(		name,
			type,
			div )

Definition at line 154 of file vf_maskfun.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

maskfun

)

filter_frame()

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

static

Definition at line 85 of file vf_maskfun.c.

fill_frame()

static void fill_frame ( AVFilterContext * ctx )

static

Definition at line 201 of file vf_maskfun.c.

Referenced by config_input(), and process_command().

set_max_sum()

static void set_max_sum ( AVFilterContext * ctx )

static

Definition at line 228 of file vf_maskfun.c.

Referenced by config_input(), and process_command().

config_input()

static int config_input ( AVFilterLink * inlink )

static

Definition at line 240 of file vf_maskfun.c.

process_command()

static int process_command ( AVFilterContext * ctx, const char * cmd, const char * args, char * res, int res_len, int flags )

static

Definition at line 281 of file vf_maskfun.c.

uninit()

static av_cold void uninit ( AVFilterContext * ctx )

static

Definition at line 302 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, VFT },
    { "high",   "set high threshold", OFFSET(high),   AV_OPT_TYPE_INT, {.i64=10},  0, UINT16_MAX, VFT },
    { "planes", "set planes",         OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF,        VFT },
    { "fill",   "set fill value",     OFFSET(fill),   AV_OPT_TYPE_INT, {.i64=0},   0, UINT16_MAX, VFT },
    { "sum",    "set sum value",      OFFSET(sum),    AV_OPT_TYPE_INT, {.i64=10},  0, UINT16_MAX, VFT },
    { NULL }
}

Definition at line 53 of file vf_maskfun.c.

pix_fmts

enum AVPixelFormat pix_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
    AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
    AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
    AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
    AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
    AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
    AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
    AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
    AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
    AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
    AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
    AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
    AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
    AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
    AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
    AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
    AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
    AV_PIX_FMT_NONE
}

Definition at line 64 of file vf_maskfun.c.

maskfun_inputs

const AVFilterPad maskfun_inputs[]

static

Initial value:

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

Definition at line 309 of file vf_maskfun.c.

ff_vf_maskfun

const FFFilter ff_vf_maskfun

Initial value:

= {
    .p.name        = "maskfun",
    .p.description = NULL_IF_CONFIG_SMALL("Create Mask."),
    .p.priv_class  = &maskfun_class,
    .p.flags       = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
    .priv_size     = sizeof(MaskFunContext),
    .uninit        = uninit,
    FILTER_INPUTS(maskfun_inputs),
    FILTER_OUTPUTS(ff_video_default_filterpad),
    FILTER_PIXFMTS_ARRAY(pix_fmts),
    .process_command = process_command,
}

Definition at line 319 of file vf_maskfun.c.