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SunOS 5.10 - man page for mlib_imagescale2 (sunos section 3mlib)

mlib_ImageScale2(3MLIB) 				    mediaLib Library Functions					   mlib_ImageScale2(3MLIB)

NAME
mlib_ImageScale2 - linear scaling
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> mlib_status mlib_ImageScale2(mlib_image *dst, const mlib_image *src, const mlib_d64 *alpha, const mlib_d64 *beta);
DESCRIPTION
The mlib_ImageScale2() function performs a linear scaling on the pixels of the source image by multiplying the data by a scale factor and then adding an offset. Images must have the same size, and number of channels. They can have 1, 2, 3, or 4 channels. The following equation is used: dst[x][y][i] = src[x][y][i] * alpha[i] + beta[i] If the result of the operation underflows/overflows the minimum/maximum value supported by the destination image, then it will be clamped to the minimum/maximum value respectively. See the following table for available variations of this linear scaling function. Type [*] BYTE SHORT USHORT INT FLOAT DOUBLE MLIB_BYTE Y Y Y Y Y Y MLIB_SHORT Y Y Y Y Y Y MLIB_USHORT Y Y Y Y Y Y MLIB_INT Y Y Y Y Y Y [*] Each row represents a source data type. Each column represents a destination data type.
PARAMETERS
The function takes the following arguments: dst Pointer to destination image. src Pointer to source image. alpha Scaling factor. alpha[i] contains the scaling factor for channel i. beta Offset value. beta[i] contains the offset for channel i.
RETURN VALUES
The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+
SEE ALSO
mlib_ImageScale(3MLIB), mlib_ImageScale_Fp(3MLIB), mlib_ImageScale_Fp_Inp(3MLIB), mlib_ImageScale_Inp(3MLIB), mlib_ImageScale2_Inp(3MLIB), attributes(5) SunOS 5.10 10 Nov 2004 mlib_ImageScale2(3MLIB)