vf_scdet.c File Reference

#include "libavutil/avassert.h"
#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"

Go to the source code of this file.

Data Structures
struct	SCDetContext

Macros
#define	OFFSET(x)   offsetof(SCDetContext, x)
#define	V   AV_OPT_FLAG_VIDEO_PARAM
#define	F   AV_OPT_FLAG_FILTERING_PARAM

Functions
	AVFILTER_DEFINE_CLASS (scdet)
static int	query_formats (AVFilterContext *ctx)
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 const AVFilterPad	scdet_inputs []
static const AVFilterPad	scdet_outputs []
AVFilter	ff_vf_scdet

Detailed Description

video scene change detection filter

Definition in file vf_scdet.c.

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

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

)

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 63 of file vf_scdet.c.

config_input()

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 84 of file vf_scdet.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 109 of file vf_scdet.c.

get_scene_score()

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

static

Definition at line 116 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 148 of file vf_scdet.c.

Referenced by activate().

activate()

static int activate ( AVFilterContext *  ctx )

static

Definition at line 153 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,     {.dbl =  0  },    0,    1,  V|F },
    { "s",           "Set the flag to pass scene change frames", OFFSET(sc_pass),    AV_OPT_TYPE_BOOL,     {.dbl =  0  },    0,    1,  V|F },
    {NULL}
}

Definition at line 53 of file vf_scdet.c.

scdet_inputs

const AVFilterPad scdet_inputs[]

static

Initial value:

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

Definition at line 197 of file vf_scdet.c.

scdet_outputs

const AVFilterPad scdet_outputs[]

static

Initial value:

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

Definition at line 206 of file vf_scdet.c.

ff_vf_scdet

AVFilter ff_vf_scdet

Initial value:

= {
    .name          = "scdet",
    .description   = NULL_IF_CONFIG_SMALL("Detect video scene change"),
    .priv_size     = sizeof(SCDetContext),
    .priv_class    = &scdet_class,
    .uninit        = uninit,
    .query_formats = query_formats,
    .inputs        = scdet_inputs,
    .outputs       = scdet_outputs,
    .activate      = activate,
}

Definition at line 214 of file vf_scdet.c.