opensolaris man page for mlib_imageconstmulshift

mlib_ImageConstMulShift(3MLIB)				    mediaLib Library Functions				    mlib_ImageConstMulShift(3MLIB)

NAME
       mlib_ImageConstMulShift - multiply with a constant, with shifting

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

       mlib_status mlib_ImageConstMulShift(mlib_image *dst, const mlib_image *src,
	    const mlib_s32 *c, mlib_s32 shift);

DESCRIPTION
       The  mlib_ImageConstMulShift()  function  multiplies  each  pixel  in an image by a constant value on a pixel-by-pixel basis. It scales the
       result by a right shift and writes the result to the destination image on a pixel-by-pixel basis.

       It uses the following equation:

	 dst[x][y][i] = c[i] * src[x][y][i] * 2**(-shift)

PARAMETERS
       The function takes the following arguments:

       dst	Pointer to destination image.

       src	Pointer to source image.

       c	Constant by which each pixel is multiplied. c[i] contains the constant for channel i.

       shift	Right shifting factor. 0 <= shift <= 31.

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	     |Committed 		   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       mlib_ImageConstMul(3MLIB), mlib_ImageConstMul_Fp(3MLIB), mlib_ImageConstMul_Fp_Inp(3MLIB), mlib_ImageConstMul_Inp(3MLIB),  mlib_ImageConst-
       MulShift_Inp(3MLIB), attributes(5)

SunOS 5.11							    2 Mar 2007					    mlib_ImageConstMulShift(3MLIB)