mediaLib Library Functions       mlibImageColorYC2RGBFp(3MLIB)



NAME
     mlibImageColorYC2RGBFp - YC to RGB color conversion

SYNOPSIS
     cc [ flag... ] file... -lmlib [ library... ]
     #include 

     mlibstatus mlibImageColorYC2RGBFp(mlibimage *dst,
          const mlibimage *src);


DESCRIPTION
     The mlibImageColorYC2RGBFp() 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 MLIBSUCES if  successful.  Otherwise
     it returns MLIBFAILURE.




SunOS 5.11           Last change: 2 Mar 2007                    1






mediaLib Library Functions       mlibImageColorYC2RGBFp(3MLIB)



ATRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



     
           ATRIBUTE TYPE               ATRIBUTE VALUE       
    
     Interface Stability          Committed                   
    
     MT-Level                     MT-Safe                     
    


SEE ALSO
     mlibImageColorConvert2(3MLIB),
     mlibImageColorConvert2Fp(3MLIB),
     mlibImageColorRGB2XYZ(3MLIB),
     mlibImageColorRGB2XYZFp(3MLIB),
     mlibImageColorRGB2YC(3MLIB),
     mlibImageColorRGB2YCFp(3MLIB),
     mlibImageColorYC2RGB(3MLIB), attributes(5)
































SunOS 5.11           Last change: 2 Mar 2007                    2