mediaLib Library Functions    mlibVideoColorBlendABGRInp(3MLIB)



NAME
     mlibVideoColorBlendABGRInp,
     mlibVideoColorBlendABGResetAlphaInp   -  in-place  image
     blend

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

     void mlibVideoColorBlendABGRInp(mlibu32 *src1dst,
          const mlibu32 *src2,mlibs32 src1dstw,
          mlibs32 src1dsth,mlibs32 src2w,
          mlibs32 src2h,mlibs32 src2x,
          mlibs32 src2y,mlibs32 src1dstlb,
          mlibs32 src2lb,mlibblend src1dstblend,
          mlibblend src2blend);


     void mlibVideoColorBlendABGResetAlphaInp(mlibu32 *src1dst,
          const mlibu32 *src2, mlibs32 src1dstw,
          mlibs32 src1dsth, mlibs32 src2w,
          mlibs32 src2h, mlibs32 src2x,
          mlibs32 src2y, mlibs32 src1dstlb,
          mlibs32 src2lb, mlibblend src1dstblend,
          mlibblend src2blend);


DESCRIPTION
     The  functions  use  the  following  equation  for  blending
     images:

         src1dst = (src1dst * src1dstblend) ] (src2 * src2blend)



     The two multi-banded source images (src1dst  and  src2)  are
     blended  together  and  the  result  is  stored  in src1dst.
     src1dstblend specifies the blend function to be applied  to
     the  src1dst  image and src2blend specifies the blend func-
     tion to be applied to the  src2  image.  src2x  and  src2y
     specify  position  of src2 relative to the upper-left corner
     of src1dst.  src2 is clipped to the boundaries  of  src1dst,
     if needed.


     Possible blend functions are:

         MLIBLENDZERO
         MLIBLENDONE
         MLIBLENDSRCALPHA
         MLIBLENDONEMINUSRCALPHA
         MLIBLENDSTALPHA



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mediaLib Library Functions    mlibVideoColorBlendABGRInp(3MLIB)



         MLIBLENDONEMINUSDSTALPHA



     MLIBLENDSTALPHA is the alpha band of image src1  scaled
     to  the range 0 to 1. MLIBLENDSRCALPHA is the alpha band
     of image src2 scaled to the range 0 to 1. The  output  pixel
     bands are clamped to the range 0 to 255.


     For the mlibVideoColorBlendABGResetAlphaInp()  function,
     the  alpha  value of every pixel in destination image is set
     to 0 after blending is complete.

PARAMETERS
     Each of the functions takes the following arguments:

     src1dst          Pointer to  1st  input  image  (also  dest.
                      image).


     src2             Pointer to 2nd input image.


     src1dstw        src1dst image width in pixels.


     src1dsth        src1dst image height in rows.


     src2w           src2 image width in pixels.


     src2h           src2 image height in rows.


     src2x           src2 horizontal displacement  (in  pixels),
                      relative   to   the  upper-left  corner  of
                      src1dst.


     src2y           src2 vertical displacement (in rows), rela-
                      tive to the upper-left corner of src1dst.


     src1dstlb       Linebytes for src1dst image.


     src2lb          Linebytes for src2 image.






SunOS 5.11           Last change: 2 Mar 2007                    2






mediaLib Library Functions    mlibVideoColorBlendABGRInp(3MLIB)



     src1dstblend    Blend function for src1dst image.


     src2blend       Blend function for src2 image.


RETURN VALUES
     None.

ATRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



     
           ATRIBUTE TYPE               ATRIBUTE VALUE       
    
     Interface Stability          Committed                   
    
     MT-Level                     MT-Safe                     
    


SEE ALSO
     mlibVideoColorBlendABGR(3MLIB), attributes(5)





























SunOS 5.11           Last change: 2 Mar 2007                    3