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

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

Data Structures
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)

Functions
	AVFILTER_DEFINE_CLASS (xbr)

static uint32_t	pixel_diff (uint32_t x, uint32_t y, const uint32_t *r2y)

static av_always_inline void	xbr_filter (const ThreadData *td, int jobnr, int nb_jobs, int n)

static int	config_output (AVFilterLink *outlink)

static int	query_formats (AVFilterContext *ctx)

static int	filter_frame (AVFilterLink inlink, AVFrame in)

static int	init (AVFilterContext *ctx)

Variables
static const AVOption	xbr_options []

static const AVFilterPad	xbr_inputs []

static const AVFilterPad	xbr_outputs []

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

Definition in file vf_xbr.c.

Macro Definition Documentation

#define LB_MASK 0x00FEFEFE

Definition at line 36 of file vf_xbr.c.

#define RED_BLUE_MASK 0x00FF00FF

Definition at line 37 of file vf_xbr.c.

#define GREEN_MASK 0x0000FF00

Definition at line 38 of file vf_xbr.c.

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

Definition at line 54 of file vf_xbr.c.

#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 55 of file vf_xbr.c.

#define YMASK 0xff0000

Referenced by pixel_diff().

#define UMASK 0x00ff00

Referenced by pixel_diff().

#define VMASK 0x0000ff

Referenced by pixel_diff().

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

Referenced by pixel_diff().

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

Definition at line 78 of file vf_xbr.c.

#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)))))

s

const char * s

Definition: avisynth_c.h:631

b

const char * b

Definition: vf_curves.c:109

m

unsigned m

Definition: audioconvert.c:187

RED_BLUE_MASK

#define RED_BLUE_MASK

Definition: vf_xbr.c:37

GREEN_MASK

#define GREEN_MASK

Definition: vf_xbr.c:38

a

Definition: h264pred_template.c:468

Definition at line 79 of file vf_xbr.c.

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

Definition at line 81 of file vf_xbr.c.

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

Definition at line 82 of file vf_xbr.c.

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

Definition at line 83 of file vf_xbr.c.

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

Definition at line 84 of file vf_xbr.c.

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

Definition at line 86 of file vf_xbr.c.

Referenced by filter_slice().

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

Definition at line 87 of file vf_xbr.c.

Referenced by avfilter_register_all(), config_props(), filter_frame(), initialize(), process_command(), and uninit().

#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
	)

Definition at line 89 of file vf_xbr.c.

Referenced by xbr_filter().

#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
	)

Definition at line 123 of file vf_xbr.c.

Referenced by xbr_filter().

#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
	)

Definition at line 165 of file vf_xbr.c.

Referenced by xbr_filter().

#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; \
}

Definition at line 317 of file vf_xbr.c.

Typedef Documentation

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

Definition at line 40 of file vf_xbr.c.

Function Documentation

AVFILTER_DEFINE_CLASS ( xbr )

static uint32_t pixel_diff	(	uint32_t	x,
		uint32_t	y,
		const uint32_t *	r2y
	)

static

Definition at line 63 of file vf_xbr.c.

static av_always_inline void xbr_filter	(	const ThreadData *	td,
		int	jobnr,
		int	nb_jobs,
		int	n
	)

static

Definition at line 211 of file vf_xbr.c.

static int config_output ( AVFilterLink * outlink )

static

Definition at line 329 of file vf_xbr.c.

static int query_formats ( AVFilterContext * ctx )

static

Definition at line 340 of file vf_xbr.c.

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

static

Definition at line 352 of file vf_xbr.c.

static int init ( AVFilterContext * ctx )

static

Definition at line 379 of file vf_xbr.c.

Variable Documentation

const AVOption xbr_options[]

static

Initial value:

= {
    { "n", "set scale factor", OFFSET(n), AV_OPT_TYPE_INT, {.i64 = 3}, 2, 4, .flags = FLAGS },
    { NULL }
}

Definition at line 56 of file vf_xbr.c.

const AVFilterPad xbr_inputs[]

static

Initial value:

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

Definition at line 406 of file vf_xbr.c.

const AVFilterPad xbr_outputs[]

static

Initial value:

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

Definition at line 415 of file vf_xbr.c.

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,
}

Definition at line 424 of file vf_xbr.c.

Data Structures

Macros

Typedefs

Functions

Variables

Detailed Description

Macro Definition Documentation

Typedef Documentation

Function Documentation

Variable Documentation