opensolaris man page for mlib_imagecolorrgb2ycc_fp

mlib_ImageColorRGB2YCC_Fp(3MLIB)			    mediaLib Library Functions				  mlib_ImageColorRGB2YCC_Fp(3MLIB)

NAME
       mlib_ImageColorRGB2YCC_Fp - RGB to YCC color conversion

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

       mlib_status mlib_ImageColorRGB2YCC_Fp(mlib_image *dst,
	    const mlib_image *src);

DESCRIPTION
       The mlib_ImageColorRGB2YCC_Fp() function performs a color space conversion from computer R'G'B' to ITU-R Rec.601 Y'CbCr.

       The source and destination images must be three-channel images.

       It uses the following equation:

	 |Y'|	|cmat[0] cmat[1] cmat[2]|   |R'|   |offset[0]|
	 |Cb| = |cmat[3] cmat[4] cmat[5]| * |G'| + |offset[1]|
	 |Cr|	|cmat[6] cmat[7] cmat[8]|   |B'|   |offset[2]|

       where

	 cmat[] = { 65.738/256, 129.057/256,  25.064/256,
		   -37.945/256, -74.494/256, 112.439/256,
		   112.439/256, -94.154/256, -18.285/256 };
	 offset[] = { 16, 128, 128 };
	 src[x][y] = { R', G', B' };
	 dst[x][y] = { Y', Cb, Cr };

PARAMETERS
       The function takes the following arguments:

       dst    Pointer to destination image.

       src    Pointer to source image.

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_ImageColorConvert2(3MLIB),	   mlib_ImageColorConvert2_Fp(3MLIB),	  mlib_ImageColorRGB2YCC(3MLIB),    mlib_ImageColorXYZ2RGB(3MLIB),
       mlib_ImageColorXYZ2RGB_Fp(3MLIB), mlib_ImageColorYCC2RGB(3MLIB), mlib_ImageColorYCC2RGB_Fp(3MLIB), attributes(5)

SunOS 5.11							    2 Mar 2007					  mlib_ImageColorRGB2YCC_Fp(3MLIB)