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mlib_ImageBlend_BSRC1_BSRCmediaLibLLibramlib_ImageBlend_BSRC1_BSRC2_Inp(3MLIB)

NAME
       mlib_ImageBlend_BSRC1_BSRC2_Inp, mlib_ImageBlend_DA_DA_Inp, mlib_Image‐
       Blend_DA_DC_Inp,	       mlib_ImageBlend_DA_OMDA_Inp,	   mlib_Image‐
       Blend_DA_OMDC_Inp,	mlib_ImageBlend_DA_OMSA_Inp,	   mlib_Image‐
       Blend_DA_ONE_Inp,	mlib_ImageBlend_DA_SA_Inp,	   mlib_Image‐
       Blend_DA_SAS_Inp,	mlib_ImageBlend_DA_ZERO_Inp,	   mlib_Image‐
       Blend_OMDA_DA_Inp,	mlib_ImageBlend_OMDA_DC_Inp,	   mlib_Image‐
       Blend_OMDA_OMDA_Inp,	mlib_ImageBlend_OMDA_OMDC_Inp,	   mlib_Image‐
       Blend_OMDA_OMSA_Inp,	mlib_ImageBlend_OMDA_ONE_Inp,	   mlib_Image‐
       Blend_OMDA_SA_Inp,	mlib_ImageBlend_OMDA_SAS_Inp,	   mlib_Image‐
       Blend_OMDA_ZERO_Inp,	 mlib_ImageBlend_OMSA_DA_Inp,	   mlib_Image‐
       Blend_OMSA_DC_Inp,      mlib_ImageBlend_OMSA_OMDA_Inp,	   mlib_Image‐
       Blend_OMSA_OMDC_Inp,	mlib_ImageBlend_OMSA_OMSA_Inp,	   mlib_Image‐
       Blend_OMSA_ONE_Inp,	 mlib_ImageBlend_OMSA_SA_Inp,	   mlib_Image‐
       Blend_OMSA_SAS_Inp,     mlib_ImageBlend_OMSA_ZERO_Inp,	   mlib_Image‐
       Blend_OMSC_DA_Inp,	mlib_ImageBlend_OMSC_DC_Inp,	   mlib_Image‐
       Blend_OMSC_OMDA_Inp,	mlib_ImageBlend_OMSC_OMDC_Inp,	   mlib_Image‐
       Blend_OMSC_OMSA_Inp,	 mlib_ImageBlend_OMSC_ONE_Inp,	   mlib_Image‐
       Blend_OMSC_SA_Inp,      mlib_ImageBlend_OMSC_SAS_Inp,	   mlib_Image‐
       Blend_OMSC_ZERO_Inp,	  mlib_ImageBlend_ONE_DA_Inp,	   mlib_Image‐
       Blend_ONE_DC_Inp,       mlib_ImageBlend_ONE_OMDA_Inp,	   mlib_Image‐
       Blend_ONE_OMDC_Inp,	mlib_ImageBlend_ONE_OMSA_Inp,	   mlib_Image‐
       Blend_ONE_ONE_Inp,	mlib_ImageBlend_ONE_SA_Inp,	   mlib_Image‐
       Blend_ONE_SAS_Inp,	mlib_ImageBlend_ONE_ZERO_Inp,	   mlib_Image‐
       Blend_SA_DA_Inp,		mlib_ImageBlend_SA_DC_Inp,	   mlib_Image‐
       Blend_SA_OMDA_Inp,	mlib_ImageBlend_SA_OMDC_Inp,	   mlib_Image‐
       Blend_SA_OMSA_Inp,	mlib_ImageBlend_SA_ONE_Inp,	   mlib_Image‐
       Blend_SA_SA_Inp,		mlib_ImageBlend_SA_SAS_Inp,	   mlib_Image‐
       Blend_SA_ZERO_Inp,	 mlib_ImageBlend_SC_DA_Inp,	   mlib_Image‐
       Blend_SC_DC_Inp,	       mlib_ImageBlend_SC_OMDA_Inp,	   mlib_Image‐
       Blend_SC_OMDC_Inp,	mlib_ImageBlend_SC_OMSA_Inp,	   mlib_Image‐
       Blend_SC_ONE_Inp,	 mlib_ImageBlend_SC_SA_Inp,	   mlib_Image‐
       Blend_SC_SAS_Inp,       mlib_ImageBlend_SC_ZERO_Inp,	   mlib_Image‐
       Blend_ZERO_DA_Inp,	mlib_ImageBlend_ZERO_DC_Inp,	   mlib_Image‐
       Blend_ZERO_OMDA_Inp,	mlib_ImageBlend_ZERO_OMDC_Inp,	   mlib_Image‐
       Blend_ZERO_OMSA_Inp,	 mlib_ImageBlend_ZERO_ONE_Inp,	   mlib_Image‐
       Blend_ZERO_SA_Inp,      mlib_ImageBlend_ZERO_SAS_Inp,	   mlib_Image‐
       Blend_ZERO_ZERO_Inp - blending, in place

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

       mlib_status mlib_ImageBlend_BSRC1_BSRC2_Inp(mlib_image *src1dst,
	    const mlib_image *src2, mlib_s32 cmask);

DESCRIPTION
       This  group  of	functions supports digital image composition. They are
       low-level, in-place, blending functions.

       The image type must be MLIB_BYTE. The input and output images must con‐
       tain  three or four channels. For three-channel images, the alpha value
       is as if the alpha value is 1.

       BSRC1 is one of the following: ZERO, ONE, SC, OMSC, DA,	SA,  OMDA,  or
       OMSA. BSRC2 is one of the following: ZERO, ONE, DC, OMDC, DA, SA, OMDA,
       OMSA, or SAS.

       The following are predefined blend factor types used in mediaLib	 image
       composition functions.

	 /* image blend factors */
	 typedef enum {
	     MLIB_BLEND_ZERO,
	     MLIB_BLEND_ONE,
	     MLIB_BLEND_DST_COLOR,
	     MLIB_BLEND_SRC_COLOR,
	     MLIB_BLEND_ONE_MINUS_DST_COLOR,
	     MLIB_BLEND_ONE_MINUS_SRC_COLOR,
	     MLIB_BLEND_DST_ALPHA,
	     MLIB_BLEND_SRC_ALPHA,
	     MLIB_BLEND_ONE_MINUS_DST_ALPHA,
	     MLIB_BLEND_ONE_MINUS_SRC_ALPHA,
	     MLIB_BLEND_SRC_ALPHA_SATURATE
	 } mlib_blend;

       See the following table for the definitions of the blend factors.

		    Type		   Blend Factor [*]	   Abbr.
       ───────────────────────────────────────────────────────────────────
       MLIB_BLEND_ZERO			(0,0,0,0)		  ZERO
       MLIB_BLEND_ONE			(1,1,1,1)		  ONE
       MLIB_BLEND_DST_COLOR		(Rd,Gd,Bd,Ad)		  DC
       MLIB_BLEND_SRC_COLOR		(Rs,Gs,Bs,As)		  SC
       MLIB_BLEND_ONE_MINUS_DST_COLOR	(1,1,1,1)-(Rd,Gd,Bd,Ad)	  OMDC
       MLIB_BLEND_ONE_MINUS_SRC_COLOR	(1,1,1,1)-(Rs,Gs,Bs,As)	  OMSC
       MLIB_BLEND_DST_ALPHA		(Ad,Ad,Ad,Ad)		  DA
       MLIB_BLEND_SRC_ALPHA		(As,As,As,As)		  SA
       MLIB_BLEND_ONE_MINUS_DST_ALPHA	(1,1,1,1)-(Ad,Ad,Ad,Ad)	  OMDA
       MLIB_BLEND_ONE_MINUS_SRC_ALPHA	(1,1,1,1)-(As,As,As,As)	  OMSA
       MLIB_BLEND_SRC_ALPHA_SATURATE	(f,f,f,1)		  SAS

       [*]:  The components of the first source image pixel are (Rd,Gd,Bd,Ad),
       and the components of the second source pixel are (Rs,Gs,Bs,As).	 Func‐
       tion  f	= min(As,1-Ad). The first source image is also the destination
       image.

       The blending formula for in-place processing is:

	 Cd = Cd*D + Cs*S

       where Cd is the destination pixel (Rd,Gd,Bd,Ad), Cs is the source pixel
       (Rs,Gs,Bs,As),  and  D  and S are the blend factors for the destination
       and source, respectively.

PARAMETERS
       Each of the functions takes the following arguments:

       src1dst	  Pointer to the first source and the destination image.

       src2	  Pointer to the second source image.

       cmask	  Channel mask to indicate the alpha channel. Each bit of  the
		  mask	represents  a channel in the image. The channel corre‐
		  sponding to the 1 bit is the alpha channel.  cmask  must  be
		  either 0x01 or 0x08.

RETURN VALUES
       Each  of the functions 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_ImageBlend_BSRC1_BSRC2(3MLIB),	   mlib_ImageComposite(3MLIB),
       mlib_ImageComposite_Inp(3MLIB), attributes(5)

SunOS 5.11			  2 Mar mlib_ImageBlend_BSRC1_BSRC2_Inp(3MLIB)
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