mlib_imagecolorditherfree(3mlib) [opensolaris man page]

mlib_ImageColorDitherFree(3MLIB)			    mediaLib Library Functions				  mlib_ImageColorDitherFree(3MLIB)

NAME

       mlib_ImageColorDitherFree - release the internal data structure for image dithering

SYNOPSIS

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

       void mlib_ImageColorDitherFree(void *colormap);

DESCRIPTION

       The  mlib_ImageColorDitherFree()  function  releases an internal data structure, colormap, which was created by mlib_ImageColorDitherInit()
       and was used by one of the following functions for image dithering:

	 mlib_ImageColorErrorDiffusion3x3
	 mlib_ImageColorErrorDiffusionMxN
	 mlib_ImageColorOrderedDither8x8
	 mlib_ImageColorOrderedDitherMxN

PARAMETERS

       The function takes the following arguments:

       colormap    Internal data structure for image dithering.

RETURN VALUES

       None.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Committed 		   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mlib_ImageColorDitherInit(3MLIB), mlib_ImageColorErrorDiffusion3x3(3MLIB), mlib_ImageColorErrorDiffusionMxN(3MLIB), mlib_ImageColorOrdered-
       Dither8x8(3MLIB), mlib_ImageColorOrderedDitherMxN(3MLIB), attributes(5)

SunOS 5.11							    2 Mar 2007					  mlib_ImageColorDitherFree(3MLIB)

mlib_ImageColorOrderedDitherMxN(3MLIB)			    mediaLib Library Functions			    mlib_ImageColorOrderedDitherMxN(3MLIB)

NAME

       mlib_ImageColorOrderedDitherMxN - true-color to indexed-color or grayscale to black-white conversion, using ordered dithering

SYNOPSIS

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

       mlib_status  mlib_ImageColorOrderedDitherMxN(mlib_image	*dst,  const  mlib_image  *src,  const	mlib_s32  **dmask, mlib_s32 m, mlib_s32 n,
       mlib_s32 scale, const void *colormap);

DESCRIPTION

       The mlib_ImageColorOrderedDitherMxN() function converts a 3-channel image to a 1-channel indexed image, or converts a  1-channel  grayscale
       image to a 1-channel MLIB_BIT image, with the method of ordered dithering.

       The src can be an MLIB_BYTE image with 1 or 3 channels. The dst must be a 1-channel MLIB_BIT or MLIB_BYTE image.

       The colormap must be created by mlib_ImageColorDitherInit(), and it must have a colorcube included.

       The dither masks are required to have the following property:

       0 <= dmask[i][j] < 2**scale; scale > 0

PARAMETERS

       The function takes the following arguments:

       dst	       Pointer to destination image.

       src	       Pointer to source image.

       dmask	       Pointer to the dither masks, one per channel, in row major order.

       m	       Mask width.  m > 1.

       n	       Mask height.  n > 1.

       scale	       Scaling factor for dmask to convert the input integer coefficients into floating-point coefficients:

		       floating-point coefficient = integer coefficient * 2**(-scale)

       colormap        Internal data structure for image dithering.

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_ImageColorDitherInit(3MLIB), mlib_ImageColorDitherFree(3MLIB), mlib_ImageColorErrorDiffusion3x3(3MLIB), mlib_ImageColorErrorDiffusion-
       MxN(3MLIB), mlib_ImageColorOrderedDither8x8(3MLIB), attributes(5)

SunOS 5.10							    10 Nov 2004 			    mlib_ImageColorOrderedDitherMxN(3MLIB)