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

#include <avir_dil.h>

Public Member Functions
void	dither (fptype *const ResScanline) const
void	init (const int aLen, const CImageResizerVars &aVars, const double aTrMul, const double aPkOut)

Static Public Member Functions
static bool	isRecursive ()

Protected Attributes
int	Len
int	LenE
double	PkOut0
double	TrMul0
const CImageResizerVars *	Vars

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

template<class fptype , class fptypesimd >

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

(

fptype *const

ResScanline

)

const

Function performs rounding and clipping operations.

Parameters

ResScanline

The buffer containing the final scanline.

template<class fptype , class fptypesimd >

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

Function 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.

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.

Member Data Documentation

template<class fptype , class fptypesimd >

int avir::CImageResizerDithererDefDIL< fptype, fptypesimd >::Len

protected

Scanline's length in pixels.

template<class fptype , class fptypesimd >

int avir::CImageResizerDithererDefDIL< fptype, fptypesimd >::LenE

protected

= LenE * ElCount.

template<class fptype , class fptypesimd >

double avir::CImageResizerDithererDefDIL< fptype, fptypesimd >::PkOut0

protected

Peak output value allowed.

template<class fptype , class fptypesimd >

double avir::CImageResizerDithererDefDIL< fptype, fptypesimd >::TrMul0

protected

Bit-depth truncation multiplier.

template<class fptype , class fptypesimd >

const CImageResizerVars* avir::CImageResizerDithererDefDIL< fptype, fptypesimd >::Vars

protected

Image resizing-related variables.