mlib_ImageColorTrue2IndexInit(3MLIB)			    mediaLib Library Functions			      mlib_ImageColorTrue2IndexInit(3MLIB)

NAME

       mlib_ImageColorTrue2IndexInit - initialization for true color to indexed color conversion

SYNOPSIS

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

       mlib_status  mlib_ImageColorTrue2IndexInit(void **colormap, mlib_s32 bits, mlib_type intype, mlib_type outtype, mlib_s32 channels, mlib_s32
       entries, mlib_s32 offset, const void **table);

DESCRIPTION

       The mlib_ImageColorTrue2IndexInit() function creates and initializes an internal data structure based on the input lookup table	and  other
       parameters for inverse color mapping.

       The  lookup  table can have either three or four channels. The number of channels of the lookup table should match that of the source image
       provided to the function that will use the colormap structure created by this function.

       The type of the lookup table can be one of the following:

       MLIB_BYTE in, MLIB_BYTE out (i.e., BYTE-to-BYTE)
       MLIB_SHORT in, MLIB_SHORT out (i.e., SHORT-to-SHORT)
       MLIB_SHORT in, MLIB_BYTE out (i.e., SHORT-to-BYTE)

       The input type of the lookup table should match the type of the destination image; the output type of the lookup  table	should	match  the
       source  image  type.  The source and destination images are the images provided to the function that is going to use the colormap structure
       created by mlib_ImageColorTrue2IndexInit() to do inverse color mapping.

PARAMETERS

       The function takes the following arguments:

       colormap        Internal data structure for inverse color mapping.

       bits	       Number of bits per color component used in the colorcube of the colormap structure. (If bits = 0, then no colorcube is cre-
		       ated. But the inverse color mapping might be done by using the original lookup table.)

       intype	       Data type of the source image and lookup table.

       outtype	       Data type of the destination indexed image.

       channels        Number of channels of the lookup table.

       entries	       Number of entries of the lookup table.

       offset	       The first entry offset of the lookup table.

       table	       The lookup table (LUT).

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_ImageColorErrorDiffusion3x3(3MLIB),     mlib_ImageColorOrderedDither8x8(3MLIB),    mlib_ImageColorTrue2Index(3MLIB),    mlib_ImageCol-
       orTrue2IndexFree(3MLIB), attributes(5)

SunOS 5.10							    10 Nov 2004 			      mlib_ImageColorTrue2IndexInit(3MLIB)