avir::CImageResizerDithererErrdINL< fptype > Class Template Reference

#include <avir.h>

Inheritance diagram for avir::CImageResizerDithererErrdINL< fptype >:

Public Member Functions
void	dither (fptype *const ResScanline)
void	init (const int aLen, const CImageResizerVars &aVars, const double aTrMul, const double aPkOut)
Public Member Functions inherited from avir::CImageResizerDithererDefINL< fptype >
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 ()
Static Public Member Functions inherited from avir::CImageResizerDithererDefINL< fptype >
static bool	isRecursive ()

Protected Attributes
fptype *	ResScanlineDith
CBuffer< fptype >	ResScanlineDith0
Protected Attributes inherited from avir::CImageResizerDithererDefINL< fptype >
int	Len
int	LenE
double	PkOut0
double	TrMul0
const CImageResizerVars *	Vars

Detailed Description

template<class fptype>
class avir::CImageResizerDithererErrdINL< fptype >

Image resizer's error-diffusion dithering class, interleaved mode.

This ditherer implements error-diffusion dithering which looks good, and whose results are compressed by PNG well. This implementation uses weighting coefficients obtained via machine optimization and visual evaluation.

Template Parameters

fptype

Floating point type to use for storing pixel data. SIMD types can be used.

Member Function Documentation

template<class fptype >

void avir::CImageResizerDithererErrdINL< fptype >::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.

Member Data Documentation

template<class fptype >

fptype* avir::CImageResizerDithererErrdINL< fptype >::ResScanlineDith

protected

Error diffusion buffer pointer which skips the first ElCount elements.

template<class fptype >

CBuffer< fptype > avir::CImageResizerDithererErrdINL< fptype >::ResScanlineDith0

protected

Error diffusion buffer.