vf_freezedetect.c File Reference

video freeze 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	FreezeDetectContext

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

Functions
	AVFILTER_DEFINE_CLASS (freezedetect)
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 (void *log_ctx, AVFrame *frame, const char *key, const char *value)
static int	activate (AVFilterContext *ctx)

Variables
static const AVOption	freezedetect_options []
static enum AVPixelFormat	pix_fmts []
static const AVFilterPad	freezedetect_inputs []
const FFFilter	ff_vf_freezedetect

Detailed Description

video freeze detection filter

Definition in file vf_freezedetect.c.

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

Value:

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

)

config_input()

static int config_input ( AVFilterLink * inlink )

static

Definition at line 92 of file vf_freezedetect.c.

uninit()

static av_cold void uninit ( AVFilterContext * ctx )

static

Definition at line 113 of file vf_freezedetect.c.

is_frozen()

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

static

Definition at line 119 of file vf_freezedetect.c.

Referenced by activate().

set_meta()

static int set_meta ( void * log_ctx, AVFrame * frame, const char * key, const char * value )

static

Definition at line 138 of file vf_freezedetect.c.

Referenced by activate().

activate()

static int activate ( AVFilterContext * ctx )

static

Definition at line 144 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.

pix_fmts

enum AVPixelFormat pix_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUYV422, AV_PIX_FMT_RGB24,
    AV_PIX_FMT_BGR24, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P,
    AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_GRAY8,
    AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P,
    AV_PIX_FMT_UYVY422, AV_PIX_FMT_NV12, AV_PIX_FMT_NV21, AV_PIX_FMT_ARGB,
    AV_PIX_FMT_RGBA, AV_PIX_FMT_ABGR, AV_PIX_FMT_BGRA, AV_PIX_FMT_GRAY16,
    AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVA420P,
    AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
    AV_PIX_FMT_YA8, AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV420P10,
    AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV444P10,
    AV_PIX_FMT_YUV422P9, AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9,
    AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRP16, AV_PIX_FMT_YUVA422P,
    AV_PIX_FMT_YUVA444P, 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_NV16, AV_PIX_FMT_YVYU422,
    AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP16, AV_PIX_FMT_YUV420P12,
    AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV422P14,
    AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV444P14, AV_PIX_FMT_GBRP12,
    AV_PIX_FMT_GBRP14, AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV440P10,
    AV_PIX_FMT_YUV440P12, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP10,
    AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY9,
    AV_PIX_FMT_GRAY14,
    AV_PIX_FMT_NONE
}

Definition at line 65 of file vf_freezedetect.c.

freezedetect_inputs

const AVFilterPad freezedetect_inputs[]

static

Initial value:

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

Definition at line 200 of file vf_freezedetect.c.

ff_vf_freezedetect

const FFFilter ff_vf_freezedetect

Initial value:

= {
    .p.name        = "freezedetect",
    .p.description = NULL_IF_CONFIG_SMALL("Detects frozen video input."),
    .p.priv_class  = &freezedetect_class,
    .p.flags       = AVFILTER_FLAG_METADATA_ONLY,
    .priv_size     = sizeof(FreezeDetectContext),
    .uninit        = uninit,
    FILTER_INPUTS(freezedetect_inputs),
    FILTER_OUTPUTS(ff_video_default_filterpad),
    FILTER_PIXFMTS_ARRAY(pix_fmts),
    .activate      = activate,
}

Definition at line 208 of file vf_freezedetect.c.