Content-type: text/html Man page of mlib_ImageScalarBlend

mlib_ImageScalarBlend

Section: mediaLib Library Functions (3MLIB)
Updated: 2 Mar 2007
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NAME

mlib_ImageScalarBlend - image blending with scalar  

SYNOPSIS

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

mlib_status mlib_ImageScalarBlend(mlib_image dst, const mlib_image *src1,
    const mlib_image *src2, const mlib_s32 *alpha);

 

DESCRIPTION

The mlib_ImageScalarBlend() function blends the first and second source images by adding each of their scaled pixels. The first source image is scaled by the scalar a, and the second source image is inverse scaled by (1 - a).

It uses the following equation:

dst[x][y][i] = a[i]*src1[x][y][i] + (1 - a[i])*src2[x][y][i]

 

PARAMETERS

The function takes the following arguments:

dst

Pointer to destination image.

src1

Pointer to first source image.

src2

Pointer to second source image.

alpha

Scalar blending factor. The a value equals (alpha * 2**(-31)). alpha[i] contains the blending factor 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 TYPEATTRIBUTE VALUE

Interface StabilityCommitted

MT-Level

 

SEE ALSO

mlib_ImageScalarBlend_Fp(3MLIB), mlib_ImageScalarBlend_Fp_Inp(3MLIB), mlib_ImageScalarBlend_Inp(3MLIB), attributes(5)


 

Index

NAME
SYNOPSIS
DESCRIPTION
PARAMETERS
RETURN VALUES
ATTRIBUTES
SEE ALSO

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Time: 02:37:57 GMT, October 02, 2010