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mlib_imagecolorycc2rgb_fp

mlib_ImageColorYCC2RGB_Fp(3MLIB)			    mediaLib Library Functions				  mlib_ImageColorYCC2RGB_Fp(3MLIB)

NAME

       mlib_ImageColorYCC2RGB_Fp - YCC to RGB color conversion

SYNOPSIS

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

       mlib_status mlib_ImageColorYCC2RGB_Fp(mlib_image *dst, const mlib_image *src);

DESCRIPTION

       The mlib_ImageColorYCC2RGB_Fp() function performs a color space conversion from ITU-R Rec.601 Y'CbCr to computer R'G'B'.

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

       It uses the following equation:

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

       where

       cmat[] = { 298.082/256,	  0.000/256,  408.583/256,
		  298.082/256, -100.291/256, -208.120/256,
		  298.082/256,	516.411/256,	0.000/256 };
       offset[] = { -222.922, 135.575, -276.836 };
       src[x][y] = { Y', Cb, Cr };
       dst[x][y] = { R', G', B' };

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	     |Evolving			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mlib_ImageColorConvert2(3MLIB),	  mlib_ImageColorConvert2_Fp(3MLIB),	mlib_ImageColorRGB2XYZ(3MLIB),	 mlib_ImageColorRGB2XYZ_Fp(3MLIB),
       mlib_ImageColorRGB2YCC(3MLIB), mlib_ImageColorRGB2YCC_Fp(3MLIB), mlib_ImageColorYCC2RGB(3MLIB), attributes(5)

SunOS 5.10							    10 Nov 2004 				  mlib_ImageColorYCC2RGB_Fp(3MLIB)