vf_scdet.c File Reference

video scene change detection filter More...

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

Go to the source code of this file.

Data Structures
struct	SCDetContext

Macros
#define	OFFSET(x)
#define	V   AV_OPT_FLAG_VIDEO_PARAM
#define	F   AV_OPT_FLAG_FILTERING_PARAM

Functions
	AVFILTER_DEFINE_CLASS (scdet)
static int	config_input (AVFilterLink *inlink)
static av_cold void	uninit (AVFilterContext *ctx)
static double	get_scene_score (AVFilterContext *ctx, AVFrame *frame)
static int	set_meta (SCDetContext *s, AVFrame *frame, const char *key, const char *value)
static int	activate (AVFilterContext *ctx)

Variables
static const AVOption	scdet_options []
static enum AVPixelFormat	pix_fmts []
static const AVFilterPad	scdet_inputs []
const FFFilter	ff_vf_scdet

Detailed Description

video scene change detection filter

Definition in file vf_scdet.c.

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(SCDetContext, x)

Definition at line 49 of file vf_scdet.c.

V

#define V   AV_OPT_FLAG_VIDEO_PARAM

Definition at line 50 of file vf_scdet.c.

F

#define F   AV_OPT_FLAG_FILTERING_PARAM

Definition at line 51 of file vf_scdet.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

scdet

)

config_input()

static int config_input ( AVFilterLink * inlink )

static

Definition at line 110 of file vf_scdet.c.

uninit()

static av_cold void uninit ( AVFilterContext * ctx )

static

Definition at line 137 of file vf_scdet.c.

get_scene_score()

static double get_scene_score ( AVFilterContext * ctx, AVFrame * frame )

static

Definition at line 144 of file vf_scdet.c.

Referenced by activate().

set_meta()

static int set_meta ( SCDetContext * s, AVFrame * frame, const char * key, const char * value )

static

Definition at line 175 of file vf_scdet.c.

Referenced by activate().

activate()

static int activate ( AVFilterContext * ctx )

static

Definition at line 180 of file vf_scdet.c.

Variable Documentation

scdet_options

const AVOption scdet_options[]

static

Initial value:

= {
    { "threshold",   "set scene change detect threshold",        OFFSET(threshold),  AV_OPT_TYPE_DOUBLE,   {.dbl = 10.},     0,  100., V|F },
    { "t",           "set scene change detect threshold",        OFFSET(threshold),  AV_OPT_TYPE_DOUBLE,   {.dbl = 10.},     0,  100., V|F },
    { "sc_pass",     "Set the flag to pass scene change frames", OFFSET(sc_pass),    AV_OPT_TYPE_BOOL,     {.i64 = 0  },     0,    1,  V|F },
    { "s",           "Set the flag to pass scene change frames", OFFSET(sc_pass),    AV_OPT_TYPE_BOOL,     {.i64 = 0  },     0,    1,  V|F },
    {NULL}
}

Definition at line 53 of file vf_scdet.c.

pix_fmts

enum AVPixelFormat pix_fmts[]

static

Definition at line 63 of file vf_scdet.c.

scdet_inputs

const AVFilterPad scdet_inputs[]

static

Initial value:

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

Definition at line 224 of file vf_scdet.c.

ff_vf_scdet

const FFFilter ff_vf_scdet

Initial value:

= {
    .p.name        = "scdet",
    .p.description = NULL_IF_CONFIG_SMALL("Detect video scene change"),
    .p.priv_class  = &scdet_class,
    .p.flags       = AVFILTER_FLAG_METADATA_ONLY,
    .priv_size     = sizeof(SCDetContext),
    .uninit        = uninit,
    FILTER_INPUTS(scdet_inputs),
    FILTER_OUTPUTS(ff_video_default_filterpad),
    FILTER_PIXFMTS_ARRAY(pix_fmts),
    .activate      = activate,
}

Definition at line 232 of file vf_scdet.c.