avir::CImageResizerVars Class Reference

Image resizing variables class. More...

#include <avir.h>

Public Attributes
int	BufLen [2]
	Intermediate buffers' lengths in "fptype" elements.
int	BufOffs [2]
	Offsets into the intermediate buffers, used to provide prefix elements required during processing so that no "out of range" access happens. This offset is a multiple of ElCount if pixels are stored in interleaved form.
int	BuildMode
	The build mode to use, for debugging purposes. Set to -1 to select a minimal-complexity mode automatically. All build modes deliver similar results with minor deviations.
int	elalign
	Length alignment of arrays of elements. This applies to filters and intermediate buffers: this constant forces filters and scanlines to have a length which is a multiple of this value, for more efficient SIMD implementation.
int	ElCount
	The number of "fptype" elements used to store 1 pixel.
int	ElCountIO
	The number of source and destination image's elements used to store 1 pixel.
int	fpalign
	Suggested alignment size in bytes. This is not a required alignment, because image resizing algorithm cannot be made to have a strictly aligned data access in all cases (e.g. de-interleaved interpolation cannot perform aligned accesses).
int	fppack
	The number of atomic types stored in a single "fptype" element.
double	InGammaMult
	Input gamma multiplier, used to convert input data to 0 to 1 range. 0.0 if no gamma is in use.
bool	IsResize2
	Use optimized "doResize2" function.
double	k
	Resizing step coefficient, updated to reflect the actually used coefficient during resizing.
double	o
	Starting pixel offset inside the source image, updated to reflect the actually used offset during resizing.
double	OutGammaMult
	Output gamma multiplier, used to convert data to 0 to 255/65535 range. 0.0 if no gamma is in use.
double	ox
	Start X pixel offset within source image (can be negative). Positive offset moves image to the left.
double	oy
	Start Y pixel offset within source image (can be negative). Positive offset moves image to the top.
int	packmode
	0 if interleaved packing, 1 if de-interleaved.
int	ResizeStep
	Index of the resizing step in the latest filtering steps array.
int	RndSeed
	Random seed parameter. This parameter may be incremented after each random generator initialization. The use of this variable depends on the ditherer implementation.
CImageResizerThreadPool *	ThreadPool
	Thread pool to be used by the image resizing function. Set to NULL to use single-threaded processing.
bool	UseSRGBGamma
	Perform sRGB gamma linearization (correction).

Detailed Description

Image resizing variables class.

This is an utility "catch all" class that defines various variables used during image resizing. Several variables that are explicitly initialized in this class' constructor are also used as additional "input" variables to the image resizing function. These variables will not be changed by the avir::CImageResizer<>::resizeImage() function.