Content-type: text/html Man page of mlib_ImageMulAlpha_Fp_Inp

mlib_ImageMulAlpha_Fp_Inp

Section: mediaLib Library Functions (3MLIB)
Updated: 2 Mar 2007
Index Return to Main Contents
 

NAME

mlib_ImageMulAlpha_Fp_Inp - alpha channel multiplication  

SYNOPSIS

cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>

mlib_status mlib_ImageMulAlpha_Fp_Inp(mlib_image *srcdst, mlib_s32 cmask);

 

DESCRIPTION

The mlib_ImageMulAlpha_Fp_Inp() function multiplies floating-point color channels by the alpha channel on a pixel by pixel basis, in place.

It uses the following equation:

srcdst[x][y][c] = srcdst[x][y][c] * srcdst[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:

srcdst

Pointer to source and destination 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 attributes:

ATTRIBUTE TYPEATTRIBUTE VALUE

Interface StabilityCommitted

MT-Level

 

SEE ALSO

mlib_ImageMulAlpha(3MLIB), mlib_ImageMulAlpha_Inp(3MLIB), mlib_ImageMulAlpha_Fp(3MLIB), attributes(5)


 

Index

NAME
SYNOPSIS
DESCRIPTION
PARAMETERS
RETURN VALUES
ATTRIBUTES
SEE ALSO

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Time: 02:38:10 GMT, October 02, 2010