mediaLib Library Functions mlib_ImageMulAlpha_Fp(3MLIB)
NAME
mlib_ImageMulAlpha_Fp - alpha channel multiplication
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include
mlib_status mlib_ImageMulAlpha_Fp(mlib_image *dst, const mlib_image *src,
mlib_s32 cmask);
DESCRIPTION
The mlib_ImageMulAlpha_Fp() function multiplies floating-
point color channels by the alpha channel on a pixel by pixel basis. It uses the following equation: dst[x][y][c] = src[x][y][c] * src[x][y][a] where c and a are the indices for the color channels and the alpha channel, respectively, so c != a.PARAMETERS
The function takes the following arguments: dst Pointer to destination image. src Pointer to source image. cmask Channel mask to indicate the alpha channel. Each bit of the mask represents a channel in the image. The channel corresponding to the 1 bit of cmask is the alpha channel.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:SunOS 5.11 Last change: 2 Mar 2007 1
mediaLib Library Functions mlib_ImageMulAlpha_Fp(3MLIB)
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Interface Stability | Committed ||_____________________________|_____________________________|
| MT-Level | MT-Safe |
|_____________________________|_____________________________|
SEE ALSO
mlib_ImageMulAlpha(3MLIB), mlib_ImageMulAlpha_Inp(3MLIB),
mlib_ImageMulAlpha_Fp_Inp(3MLIB), attributes(5)
SunOS 5.11 Last change: 2 Mar 2007 2