mediaLib Library Functions mlib_ImageScale_Inp(3MLIB)
NAME
mlib_ImageScale_Inp - linear scaling, in place
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include
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 multi-
plying 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 respec-
tively.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 fac-
tor for channel i. beta Offset value. beta[i] contains the offset for channel i. shift Right shifting factor.SunOS 5.11 Last change: 2 Mar 2007 1
mediaLib Library Functions mlib_ImageScale_Inp(3MLIB)
RETURN VALUES
The function returns MLIB_SUCCESS if successful. Otherwise
it returns MLIB_FAILURE.
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Interface Stability | Committed ||_____________________________|_____________________________|
| MT-Level | MT-Safe |
|_____________________________|_____________________________|
SEE ALSO
mlib_ImageScale(3MLIB), mlib_ImageScale_Fp(3MLIB),
mlib_ImageScale_Fp_Inp(3MLIB), mlib_ImageScale2(3MLIB),
mlib_ImageScale2_Inp(3MLIB), attributes(5)
SunOS 5.11 Last change: 2 Mar 2007 2