mlib_ImageScale_Inp(3MLIB)mediaLib Library Functionsmlib_ImageScale_Inp(3MLIB)NAMEmlib_ImageScale_Inp - linear scaling, in place
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>
mlib_status mlib_ImageScale_Inp(mlib_image *srcdst, const mlib_s32 *alpha,
const mlib_s32 *beta, mlib_s32 shift);
DESCRIPTION
The mlib_ImageScale_Inp() function performs an in-place linear scaling
on the pixels of the source image by multiplying the data by a scale
factor, shifting, and then adding an offset.
The following equation is used:
srcdst[x][y][i] = srcdst[x][y][i] * alpha[i] * 2**(-shift) +
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.
The image can be of type MLIB_BYTE, MLIB_SHORT, MLIB_USHORT or
MLIB_INT.
PARAMETERS
The function takes the following arguments:
srcdst Pointer to source and destination image.
alpha Scaling factor. alpha[i] contains the scaling factor for
channel i.
beta Offset value. beta[i] contains the offset for channel i.
shift Right shifting factor.
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 │Committed │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │MT-Safe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOmlib_ImageScale(3MLIB), mlib_ImageScale_Fp(3MLIB),
mlib_ImageScale_Fp_Inp(3MLIB), mlib_ImageScale2(3MLIB),
mlib_ImageScale2_Inp(3MLIB), attributes(5)SunOS 5.10 2 Mar 2007 mlib_ImageScale_Inp(3MLIB)
