mlib_imagecolorrgb2mono_fp(3mlib) [sunos man page]

mlib_ImageColorRGB2Mono_Fp(3MLIB)			    mediaLib Library Functions				 mlib_ImageColorRGB2Mono_Fp(3MLIB)

NAME

       mlib_ImageColorRGB2Mono_Fp - RGB to monochrome conversion

SYNOPSIS

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

       mlib_status mlib_ImageColorRGB2Mono_Fp(mlib_image *dst, const mlib_image *src, const mlib_d64 *weight);

DESCRIPTION

       The  mlib_ImageColorRGB2Mono_Fp() function performs a conversion from a red/green/blue to a monochromatic image. The source image must be a
       three-channel image. The destination image must be a single-channel image.

       It uses the following equation:

       dst[x][y][0] = weight[0]*src[x][y][0] +
		      weight[1]*src[x][y][1] +
		      weight[2]*src[x][y][2]

PARAMETERS

       The function takes the following arguments:

       dst	       Pointer to destination image.

       src	       Pointer to source image.

       weight	       Array of three blending coefficients. It is recommended that these sum to 1.0, but it is not required.

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_ImageColorRGB2CIEMono(3MLIB), mlib_ImageColorRGB2CIEMono_Fp(3MLIB), mlib_ImageColorRGB2Mono(3MLIB), attributes(5)

SunOS 5.10							    10 Nov 2004 				 mlib_ImageColorRGB2Mono_Fp(3MLIB)

mlib_ImageMulAlpha(3MLIB)				    mediaLib Library Functions					 mlib_ImageMulAlpha(3MLIB)

NAME

       mlib_ImageMulAlpha - alpha channel multiplication

SYNOPSIS

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

       mlib_status mlib_ImageMulAlpha(mlib_image *dst, const mlib_image *src,
	    mlib_s32 cmask);

DESCRIPTION

       The mlib_ImageMulAlpha() function multiplies color channels by the alpha channel on a pixel by pixel basis.

       For the MLIB_BYTE image, it uses the following equation:

	 dst[x][y][c] = src[x][y][c] * src[x][y][a] * 2**(-8)

       For the MLIB_SHORT image, it uses the following equation:

	 dst[x][y][c] = src[x][y][c] * src[x][y][a] * 2**(-15)

       For the MLIB_USHORT image, it uses the following equation:

	 dst[x][y][c] = src[x][y][c] * src[x][y][a] * 2**(-16)

       For the MLIB_INT image, it uses the following equation:

	 dst[x][y][c] = src[x][y][c] * src[x][y][a] * 2**(-31)

       where c and a are the indices for the color channels and the alpha channel, respectively, so c != a.

PARAMETERS

       The function takes the following arguments:

       dst	Pointer to destination image.

       src	Pointer to source image.

       cmask	Channel  mask  to indicate the alpha channel. Each bit of the mask represents a channel in the image. The channel corresponding to
		the 1 bit of cmask is the alpha channel.

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	     |Committed 		   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mlib_ImageMulAlpha_Inp(3MLIB), mlib_ImageMulAlpha_Fp(3MLIB), mlib_ImageMulAlpha_Fp_Inp(3MLIB), attributes(5)

SunOS 5.11							    2 Mar 2007						 mlib_ImageMulAlpha(3MLIB)