mlib_imageblendmulti_fp(3mlib) [sunos man page]
mlib_ImageBlendMulti_Fp(3MLIB) mediaLib Library Functions mlib_ImageBlendMulti_Fp(3MLIB) NAME
mlib_ImageBlendMulti_Fp - blend multiple images SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> mlib_status mlib_ImageBlendMulti_Fp(mlib_image *dst, const mlib_image **srcs, const mlib_image **alphas, const mlib_d64 *c, mlib_s32 n); DESCRIPTION
The mlib_ImageBlendMulti_Fp() function blends multiple source images, using multiple alpha images, into a single destination image. All images involved should have the same data type and same size and the source and destination images should have the same number of chan- nels. The alpha images should have either 1 channel or the same number of channels as the sources and destination. A single-channel alpha image would be applied to all channels of the corresponding source image. Single and multi-channel alpha images can be mixed in the same invocation. It uses the following equation: n-1 SUM {alphas[k][x][y][j] * srcs[k][x][y][i]} k=0 dst[x][y][i] = --------------------------------------------- n-1 SUM {alphas[k][x][y][j]} k=0 or n-1 dst[x][y][i] = c[i] if SUM {alphas[k][x][y][j]} = 0 k=0 where j = i for multi-channel alpha images; j = 0 for signle-channel alpha images. PARAMETERS
The function takes the following arguments: dst Pointer to destination image. srcs Pointer to an array of source images. alphas Pointer to an array of alpha images. c Background color. n Number of source images to be blended. 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 TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
mlib_ImageBlendMulti(3MLIB), mlib_ImageBlend(3MLIB), mlib_ImageBlend_Fp(3MLIB), attributes(5) SunOS 5.10 10 Nov 2004 mlib_ImageBlendMulti_Fp(3MLIB)
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mlib_ImageBlendColor(3MLIB) mediaLib Library Functions mlib_ImageBlendColor(3MLIB) NAME
mlib_ImageBlendColor - blend an image and a color SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> mlib_status mlib_ImageBlendColor(mlib_image *dst, const mlib_image *src, const mlib_s32 *color, mlib_s32 cmask); DESCRIPTION
The mlib_ImageBlendColor() function blends an image and a color with the alpha channel. It uses the following equation: Cd = Cs*As + Cc*(1 - As) Ad = 1.0 where, Cs and Cd are the RGB color components of the source and destination images, respectively. As and Ad are the alpha components of the source and destination images, respectively. Cc is the color component of the constant color. For MLIB_BYTE images, the alpha coefficients are in Q8 format. For MLIB_SHORT images, the alpha coefficients are in Q15 format and must be positive. For MLIB_USHORT images, the alpha coefficients are in Q16 format. For MLIB_INT images, the alpha coefficients are in Q31 format and must be positive. The images can have two to four channels. The length of color array must not be less than the number of channels in the images. PARAMETERS
The function takes the following arguments: dst Pointer to destination image. src Pointer to source image. color Array of constant color components. cmask Channel mask to indicate the alpha channel. Each bit of cmask represents a channel in the image. The channel corresponding to the highest bit with value 1 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 TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
mlib_ImageBlendColor_Inp(3MLIB), mlib_ImageBlendColor_Fp(3MLIB), mlib_ImageBlendColor_Fp_Inp(3MLIB), attributes(5) SunOS 5.10 10 Nov 2004 mlib_ImageBlendColor(3MLIB)