Manual Pages for UNIX Operating System command usage for man mlib_VideoColorABGR2JFIFYCC444

mediaLib Library Functions  mlib_VideoColorABGR2JFIFYCC444(3MLIB)



NAME
     mlib_VideoColorABGR2JFIFYCC444 - ABGR to  JFIF  YCbCr  color
     conversion

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

     mlib_status mlib_VideoColorABGR2JFIFYCC444(mlib_u8 *y, mlib_u8 *cb,
          mlib_u8 *cr, const mlib_u8 *abgr, mlib_s32 n);


DESCRIPTION
     The mlib_VideoColorABGR2JFIFYCC444() function performs color
     space  conversion  from  and  ABGR to YCbCr when used in the
     JPEG File Interchange Format (JFIF).


     The following equation is used:

       Y  =  0.29900 * R + 0.58700 * G + 0.11400 * B
       Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B  + 128
       Cr =  0.50000 * R - 0.41869 * G - 0.08131 * B  + 128


PARAMETERS
     The function takes the following arguments:

     y       Pointer to destination Y component row.  y  must  be
             8-byte aligned.


     cb      Pointer to destination Cb component row. cb must  be
             8-byte aligned.


     cr      Pointer to destination Cr component row. cr must  be
             8-byte aligned.


     abgr    Pointer to source  ABGR  multi-component  row.  abgr
             must be 8-byte aligned.


     n       Length of Y component row. The length of Cb  and  Cr
             component  rows  must  be  n. The length of the ABGR
             multi-component row must be 4*n.


RETURN VALUES
     The function returns MLIB_SUCCESS if  successful.  Otherwise
     it returns MLIB_FAILURE.



SunOS 5.11          Last change: 23 May 2007                    1






mediaLib Library Functions  mlib_VideoColorABGR2JFIFYCC444(3MLIB)



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



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Interface Stability         | Committed                   |
    |_____________________________|_____________________________|
    | MT-Level                    | MT-Safe                     |
    |_____________________________|_____________________________|


SEE ALSO
     mlib_VideoColorARGB2JFIFYCC444(3MLIB),
     mlib_VideoColorRGB2JFIFYCC444(3MLIB),
     mlib_VideoColorRGB2JFIFYCC444_S16(3MLIB), attributes(5)




































SunOS 5.11          Last change: 23 May 2007                    2