XBR Filter is used for depixelization of image. More...

#include "libavutil/opt.h"
#include "libavutil/avassert.h"
#include "libavutil/pixdesc.h"
#include "internal.h"

Classes
struct	XBRContext

struct	ThreadData

Macros
#define	LB_MASK 0x00FEFEFE

#define	RED_BLUE_MASK 0x00FF00FF

#define	GREEN_MASK 0x0000FF00

#define	OFFSET(x) offsetof(XBRContext, x)

#define	FLAGS AV_OPT_FLAG_FILTERING_PARAM\|AV_OPT_FLAG_VIDEO_PARAM

#define	YMASK 0xff0000

#define	UMASK 0x00ff00

#define	VMASK 0x0000ff

#define	ABSDIFF(a, b) (abs((int)(a)-(int)(b)))

#define	ALPHA_BLEND_128_W(a, b) ((((a) & LB_MASK) >> 1) + (((b) & LB_MASK) >> 1))

#define	ALPHA_BLEND_BASE(a, b, m, s)

#define	ALPHA_BLEND_32_W(a, b) ALPHA_BLEND_BASE(a, b, 1, 3)

#define	ALPHA_BLEND_64_W(a, b) ALPHA_BLEND_BASE(a, b, 1, 2)

#define	ALPHA_BLEND_192_W(a, b) ALPHA_BLEND_BASE(a, b, 3, 2)

#define	ALPHA_BLEND_224_W(a, b) ALPHA_BLEND_BASE(a, b, 7, 3)

#define	df(A, B) pixel_diff(A, B, r2y)

#define	eq(A, B) (df(A, B) < 155)

#define	FILT2(PE, PI, PH, PF, PG, PC, PD, PB, PA, G5, C4, G0, D0, C1, B1, F4, I4, H5, I5, A0, A1, N0, N1, N2, N3)

#define	FILT3(PE, PI, PH, PF, PG, PC, PD, PB, PA, G5, C4, G0, D0, C1, B1, F4, I4, H5, I5, A0, A1, N0, N1, N2, N3, N4, N5, N6, N7, N8)

#define	FILT4(PE, PI, PH, PF, PG, PC, PD, PB, PA, G5, C4, G0, D0, C1, B1, F4, I4, H5, I5, A0, A1, N15, N14, N11, N3, N7, N10, N13, N12, N9, N6, N2, N1, N5, N8, N4, N0)

#define	XBR_FUNC(size)

Typedefs
typedef int(*	xbrfunc_t) (AVFilterContext ctx, void arg, int jobnr, int nb_jobs)

typedef struct XBRContext	XBRContext

typedef struct ThreadData	ThreadData

Functions
	AVFILTER_DEFINE_CLASS (xbr)

Variables
AVFilter	ff_vf_xbr

Detailed Description

XBR Filter is used for depixelization of image.

This is based on Hyllian's xBR shader.

See also: http://www.libretro.com/forums/viewtopic.php?f=6&t=134; https://github.com/yoyofr/iFBA/blob/master/fba_src/src/intf/video/scalers/xbr.cpp

Macro Definition Documentation

§ ALPHA_BLEND_BASE

#define ALPHA_BLEND_BASE	(	a,
		b,
		m,
		s
	)

Value:

( (RED_BLUE_MASK & (((a) & RED_BLUE_MASK) + (((((b) & RED_BLUE_MASK) - ((a) & RED_BLUE_MASK)) * (m)) >> (s)))) \

| (GREEN_MASK & (((a) & GREEN_MASK) + (((((b) & GREEN_MASK) - ((a) & GREEN_MASK)) * (m)) >> (s)))))

§ XBR_FUNC

#define XBR_FUNC ( size )

Value:

static int xbr##size##x(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
{ \
    xbr_filter(arg, jobnr, nb_jobs, size); \
    return 0; \
}

Variable Documentation

§ ff_vf_xbr

AVFilter ff_vf_xbr

Initial value:

= {
    .name          = "xbr",
    .description   = NULL_IF_CONFIG_SMALL("Scale the input using xBR algorithm."),
    .inputs        = xbr_inputs,
    .outputs       = xbr_outputs,
    .query_formats = query_formats,
    .priv_size     = sizeof(XBRContext),
    .priv_class    = &xbr_class,
    .init          = init,
    .flags         = AVFILTER_FLAG_SLICE_THREADS,
}

Classes

Macros

Typedefs