vf_bitplanenoise.c File Reference

#include "libavutil/opt.h"
#include "libavutil/imgutils.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	BPNContext

Macros
#define	OFFSET(x)   offsetof(BPNContext, x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
#define	CHECK_BIT(x, a, b, c)

Functions
	AVFILTER_DEFINE_CLASS (bitplanenoise)
static int	query_formats (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)

Variables
static const AVOption	bitplanenoise_options []
static const AVFilterPad	inputs []
static const AVFilterPad	outputs []
AVFilter	ff_vf_bitplanenoise

Macro Definition Documentation

#define OFFSET

(

x

)

offsetof(BPNContext, x)

Definition at line 40 of file vf_bitplanenoise.c.

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 41 of file vf_bitplanenoise.c.

#define CHECK_BIT	(		x,
			a,
			b,
			c
	)

Value:

{ \
    bit = (((val[(x)] & mask) == (val[(x) + (a)] & mask)) + \
           ((val[(x)] & mask) == (val[(x) + (b)] & mask)) + \
           ((val[(x)] & mask) == (val[(x) + (c)] & mask))) > 1; \
    if (dst) \
        dst[(x)] = factor * bit; \
    stats[plane] += bit; }

Definition at line 94 of file vf_bitplanenoise.c.

Referenced by filter_frame().

Function Documentation

AVFILTER_DEFINE_CLASS

(

bitplanenoise

)

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 50 of file vf_bitplanenoise.c.

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 76 of file vf_bitplanenoise.c.

static int filter_frame ( AVFilterLink *  inlink, AVFrame *  in  )

static

Definition at line 102 of file vf_bitplanenoise.c.

Variable Documentation

const AVOption bitplanenoise_options[]

static

Initial value:

= {
    { "bitplane", "set bit plane to use for measuring noise",  OFFSET(bitplane), AV_OPT_TYPE_INT,  {.i64=1}, 1, 16, FLAGS},
    { "filter",   "show noisy pixels",                         OFFSET(filter),   AV_OPT_TYPE_BOOL, {.i64=0}, 0,  1, FLAGS},
    { NULL }
}

Definition at line 42 of file vf_bitplanenoise.c.

const AVFilterPad inputs[]

static

Initial value:

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

Definition at line 199 of file vf_bitplanenoise.c.

const AVFilterPad outputs[]

static

Initial value:

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

Definition at line 209 of file vf_bitplanenoise.c.

AVFilter ff_vf_bitplanenoise

Initial value:

= {
    .name           = "bitplanenoise",
    .description    = NULL_IF_CONFIG_SMALL("Measure bit plane noise."),
    .priv_size      = sizeof(BPNContext),
    .query_formats  = query_formats,
    .inputs         = inputs,
    .outputs        = outputs,
    .priv_class     = &bitplanenoise_class,
    .flags          = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
}

Definition at line 217 of file vf_bitplanenoise.c.