vf_freezedetect.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	FreezeDetectContext

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

Functions
	AVFILTER_DEFINE_CLASS (freezedetect)
static int	query_formats (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static av_cold void	uninit (AVFilterContext *ctx)
static int	is_frozen (FreezeDetectContext *s, AVFrame *reference, AVFrame *frame)
static int	set_meta (FreezeDetectContext *s, AVFrame *frame, const char *key, const char *value)
static int	activate (AVFilterContext *ctx)

Variables
static const AVOption	freezedetect_options []
static const AVFilterPad	freezedetect_inputs []
static const AVFilterPad	freezedetect_outputs []
AVFilter	ff_vf_freezedetect

Detailed Description

video freeze detection filter

Definition in file vf_freezedetect.c.

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(FreezeDetectContext, x)

Definition at line 50 of file vf_freezedetect.c.

V

#define V   AV_OPT_FLAG_VIDEO_PARAM

Definition at line 51 of file vf_freezedetect.c.

F

#define F   AV_OPT_FLAG_FILTERING_PARAM

Definition at line 52 of file vf_freezedetect.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

freezedetect

)

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 65 of file vf_freezedetect.c.

config_input()

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 100 of file vf_freezedetect.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 121 of file vf_freezedetect.c.

is_frozen()

static int is_frozen ( FreezeDetectContext *  s, AVFrame *  reference, AVFrame *  frame  )

static

Definition at line 127 of file vf_freezedetect.c.

Referenced by activate().

set_meta()

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

static

Definition at line 147 of file vf_freezedetect.c.

Referenced by activate().

activate()

static int activate ( AVFilterContext *  ctx )

static

Definition at line 153 of file vf_freezedetect.c.

Variable Documentation

freezedetect_options

const AVOption freezedetect_options[]

static

Initial value:

= {
    { "n",                   "set noise tolerance",                       OFFSET(noise),  AV_OPT_TYPE_DOUBLE,   {.dbl=0.001},     0,       1.0, V|F },
    { "noise",               "set noise tolerance",                       OFFSET(noise),  AV_OPT_TYPE_DOUBLE,   {.dbl=0.001},     0,       1.0, V|F },
    { "d",                   "set minimum duration in seconds",        OFFSET(duration),  AV_OPT_TYPE_DURATION, {.i64=2000000},   0, INT64_MAX, V|F },
    { "duration",            "set minimum duration in seconds",        OFFSET(duration),  AV_OPT_TYPE_DURATION, {.i64=2000000},   0, INT64_MAX, V|F },
 
    {NULL}
}

Definition at line 54 of file vf_freezedetect.c.

freezedetect_inputs

const AVFilterPad freezedetect_inputs[]

static

Initial value:

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

Definition at line 208 of file vf_freezedetect.c.

freezedetect_outputs

const AVFilterPad freezedetect_outputs[]

static

Initial value:

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

Definition at line 217 of file vf_freezedetect.c.

ff_vf_freezedetect

AVFilter ff_vf_freezedetect

Initial value:

= {
    .name          = "freezedetect",
    .description   = NULL_IF_CONFIG_SMALL("Detects frozen video input."),
    .priv_size     = sizeof(FreezeDetectContext),
    .priv_class    = &freezedetect_class,
    .uninit        = uninit,
    .query_formats = query_formats,
    .inputs        = freezedetect_inputs,
    .outputs       = freezedetect_outputs,
    .activate      = activate,
}

Definition at line 225 of file vf_freezedetect.c.