mediaLib Library Functions         mlibVideoDownSample420(3MLIB)



NAME
     mlibVideoDownSample420 - down sampling rate  conversion  in
     JFIF

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

     mlibstatus mlibVideoDownSample420(mlibu8 *dst, const mlibu8 *src0,
          const mlibu8 *src1, mlibs32 n);


DESCRIPTION
     The mlibVideoDownSample420() function  performs  down  sam-
     pling  rate  conversion used in JPEG File Interchange Format
     (JFIF).

PARAMETERS
     The function takes the following arguments:

     dst     Pointer to  destination  row.  dst  must  be  8-byte
             aligned.


     src0    Pointer to upper source row.  src0  must  be  8-byte
             aligned.


     src1    Pointer to middle source row. src1  must  be  8-byte
             aligned.


     n       Length of source rows. n must be greater than 1.


RETURN VALUES
     The function returns MLIBSUCES if  successful.  Otherwise
     it returns MLIBFAILURE.

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













SunOS 5.11           Last change: 2 Mar 2007                    1






mediaLib Library Functions         mlibVideoDownSample420(3MLIB)



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


SEE ALSO
     mlibVideoDownSample420S16(3MLIB),
     mlibVideoDownSample422(3MLIB),
     mlibVideoDownSample422S16(3MLIB),
     mlibVideoUpSample420(3MLIB),
     mlibVideoUpSample420Nearest(3MLIB),
     mlibVideoUpSample420NearestS16(3MLIB),
     mlibVideoUpSample420S16(3MLIB),
     mlibVideoUpSample422(3MLIB),
     mlibVideoUpSample422S16(3MLIB),
     mlibVideoUpSample422Nearest(3MLIB),
     mlibVideoUpSample422NearestS16(3MLIB), attributes(5)


































SunOS 5.11           Last change: 2 Mar 2007                    2