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);
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]
The function takes the following arguments:
Pointer to destination image.
Pointer to first source image.
Pointer to second source image.
Scalar blending factor. The a value equals (alpha * 2**(-31)). alpha[i] contains the blending factor for channel i.
The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.
See attributes(5) for descriptions of the following attributes: