vf_corr.c File Reference

Calculate the correlation between two input videos. More...

#include "libavutil/avstring.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "drawutils.h"
#include "filters.h"
#include "framesync.h"

Go to the source code of this file.

Data Structures
struct	Sums
struct	QSums
struct	CorrContext
struct	ThreadData
	Used for passing data between threads. More...

Macros
#define	OFFSET(x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
#define	SUM(type, name)
#define	CORR(type, name)
#define	PF_NOALPHA(suf)
#define	PF_ALPHA(suf)
#define	PF(suf)
#define	corr_options   options

Functions
static void	set_meta (AVFilterContext *ctx, AVDictionary **metadata, const char *key, char comp, float d)
static int	do_corr (FFFrameSync *fs)
static av_cold int	init (AVFilterContext *ctx)
static int	config_input_ref (AVFilterLink *inlink)
static int	config_output (AVFilterLink *outlink)
static int	activate (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)
	FRAMESYNC_DEFINE_CLASS (corr, CorrContext, fs)

Variables
static enum AVPixelFormat	pix_fmts []
static const AVFilterPad	corr_inputs []
static const AVFilterPad	corr_outputs []
static const AVOption	options []
const FFFilter	ff_vf_corr

Detailed Description

Calculate the correlation between two input videos.

Definition in file vf_corr.c.

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(CorrContext, x)

Definition at line 67 of file vf_corr.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 68 of file vf_corr.c.

SUM

#define SUM	(		type,
			name )

Definition at line 88 of file vf_corr.c.

CORR

#define CORR	(		type,
			name )

Definition at line 132 of file vf_corr.c.

PF_NOALPHA

#define PF_NOALPHA

(

suf

)

Value:

AV_PIX_FMT_YUV420##suf,  AV_PIX_FMT_YUV422##suf,  AV_PIX_FMT_YUV444##suf

PF_ALPHA

#define PF_ALPHA

(

suf

)

Value:

AV_PIX_FMT_YUVA420##suf, AV_PIX_FMT_YUVA422##suf, AV_PIX_FMT_YUVA444##suf

PF

#define PF

(

suf

)

Value:

PF_NOALPHA(suf), PF_ALPHA(suf)

Referenced by xbr_filter().

corr_options

#define corr_options   options

Definition at line 417 of file vf_corr.c.

Function Documentation

set_meta()

static void set_meta ( AVFilterContext * ctx, AVDictionary ** metadata, const char * key, char comp, float d )

static

Definition at line 70 of file vf_corr.c.

Referenced by do_corr().

do_corr()

static int do_corr ( FFFrameSync * fs )

static

Definition at line 187 of file vf_corr.c.

Referenced by do_corr(), and init().

init()

static av_cold int init ( AVFilterContext * ctx )

static

Definition at line 263 of file vf_corr.c.

config_input_ref()

static int config_input_ref ( AVFilterLink * inlink )

static

Definition at line 287 of file vf_corr.c.

config_output()

static int config_output ( AVFilterLink * outlink )

static

Definition at line 331 of file vf_corr.c.

activate()

static int activate ( AVFilterContext * ctx )

static

Definition at line 362 of file vf_corr.c.

uninit()

static av_cold void uninit ( AVFilterContext * ctx )

static

Definition at line 368 of file vf_corr.c.

FRAMESYNC_DEFINE_CLASS()

FRAMESYNC_DEFINE_CLASS	(	corr	,
		CorrContext	,
		fs	)

Variable Documentation

pix_fmts

enum AVPixelFormat pix_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
#define PF_NOALPHA(suf)                                                                         
#define PF_ALPHA(suf)                                                                            
#define PF(suf)                                       
    PF(P), PF(P9), PF(P10), PF_NOALPHA(P12), PF_NOALPHA(P14), PF(P16),
    AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
    AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
    AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
    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_NONE
}

Definition at line 272 of file vf_corr.c.

corr_inputs

const AVFilterPad corr_inputs[]

static

Initial value:

= {
    {
        .name         = "main",
        .type         = AVMEDIA_TYPE_VIDEO,
    },{
        .name         = "reference",
        .type         = AVMEDIA_TYPE_VIDEO,
        .config_props = config_input_ref,
    },
}

Definition at line 394 of file vf_corr.c.

corr_outputs

const AVFilterPad corr_outputs[]

static

Initial value:

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

Definition at line 405 of file vf_corr.c.

options

const AVOption options[]

static

Initial value:

= {
    { NULL }
}

Definition at line 413 of file vf_corr.c.

ff_vf_corr

const FFFilter ff_vf_corr

Initial value:

= {
    .p.name        = "corr",
    .p.description = NULL_IF_CONFIG_SMALL("Calculate the correlation between two video streams."),
    .p.priv_class  = &corr_class,
    .p.flags       = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
                     AVFILTER_FLAG_SLICE_THREADS             |
                     AVFILTER_FLAG_METADATA_ONLY,
    .preinit       = corr_framesync_preinit,
    .init          = init,
    .uninit        = uninit,
    .activate      = activate,
    .priv_size     = sizeof(CorrContext),
    FILTER_INPUTS(corr_inputs),
    FILTER_OUTPUTS(corr_outputs),
    FILTER_PIXFMTS_ARRAY(pix_fmts),
}

Definition at line 420 of file vf_corr.c.