avir::CImageResizerDithererDefDIL< fptype, fptypesimd > Class Template Reference

Image resizer's default de-interleaved dithering class. More...

#include <avir_dil.h>

Public Member Functions
void	dither (fptype *const ResScanline) const
	Performs rounding and clipping operations, in-place.
void	init (const int aLen, const CImageResizerVars &aVars, const double aTrMul, const double aPkOut)
	Initializes the ditherer object.

Static Public Member Functions
static bool	isRecursive ()
	Returns true, if dithering is recursive relative to scanlines, meaning multi-threaded execution is not supported by this dithering method.

Protected Attributes
int	Len
	Scanline's length in pixels.
int	LenE
	= LenE * ElCount.
double	PkOut0
	Peak output value allowed.
double	TrMul0
	Bit-depth truncation multiplier.
const CImageResizerVars *	Vars
	Image resizing-related variables.

Detailed Description

template<class fptype, class fptypesimd>
class avir::CImageResizerDithererDefDIL< fptype, fptypesimd >

Image resizer's default de-interleaved dithering class.

This class defines an object that performs rounding, clipping and dithering operations over horizontal scanline pixels before scanline is stored in the output buffer.

This ditherer implementation uses de-interleaved SIMD algorithm.

Template Parameters

fptype	Floating point type to use for storing pixel data. SIMD types cannot be used.
fptypesimd	The SIMD type used to store a pack of fptype values.

Member Function Documentation

dither()

template<class fptype, class fptypesimd>

void avir::CImageResizerDithererDefDIL< fptype, fptypesimd >::dither

(

fptype *const

ResScanline

)

const

Performs rounding and clipping operations, in-place.

Parameters

[in,out]

ResScanline

The buffer containing the final scanline.

init()

template<class fptype, class fptypesimd>

void avir::CImageResizerDithererDefDIL< fptype, fptypesimd >::init	(	const int	aLen,
		const CImageResizerVars &	aVars,
		const double	aTrMul,
		const double	aPkOut )

Initializes the ditherer object.

Parameters

aLen	Scanline length in pixels to process.
aVars	Image resizing-related variables.
aTrMul	Bit-depth truncation multiplier. 1 - no additional truncation.
aPkOut	Peak output value allowed.

isRecursive()

template<class fptype, class fptypesimd>

static bool avir::CImageResizerDithererDefDIL< fptype, fptypesimd >::isRecursive ( )

static

Returns true, if dithering is recursive relative to scanlines, meaning multi-threaded execution is not supported by this dithering method.