Manual Pages for UNIX Operating System command usage for man mlib_ImageDivConstShift

mediaLib Library Functions         mlib_ImageDivConstShift(3MLIB)



NAME
     mlib_ImageDivConstShift  -  division  by  a  constant,  with
     shifting

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

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


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


     It uses the following equation:

       dst[x][y][i] = src[x][y][i] / c[i] * 2**shift



     In the case of c[i] = 0,

       dst[x][y][i] = 0              if src[x][y][i] = 0
       dst[x][y][i] = DATA_TYPE_MAX  if src[x][y][i] > 0
       dst[x][y][i] = DATA_TYPE_MIN  if src[x][y][i] < 0



     where DATA_TYPE is MLIB_U8, MLIB_S16, MLIB_U16, or  MLIB_S32
     for  an image of type MLIB_BYTE, MLIB_SHORT, MLIB_USHORT, or
     MLIB_INT, respectively.

PARAMETERS
     The function takes the following arguments:

     dst      Pointer to destination image.


     src      Pointer to source image.


     c        Constant by which each pixel is divided. c[i]  con-
              tains the constant for channel i.


     shift    Left shifting factor. 0 < shift < 31.




SunOS 5.11           Last change: 2 Mar 2007                    1






mediaLib Library Functions         mlib_ImageDivConstShift(3MLIB)



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

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_ImageDivConstShift_Inp(3MLIB), attributes(5)


































SunOS 5.11           Last change: 2 Mar 2007                    2