mediaLib Library Functions    mlibVideoDCT8x8S16S16B12(3MLIB)



NAME
     mlibVideoDCT8x8S16S16B12  -  forward   Discrete   Cosine
     Transform (DCT)

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

     mlibstatus mlibVideoDCT8x8S16S16B12(
          mlibs16 coeffs[64], const mlibs16 block[64]);


DESCRIPTION
     This function computes the forward DCT for  the  destination
     DCT  coefficients  of data type mlibs16 and source block of
     data type mlibs16. The source to the DCT routine can occupy
     up to 12 bits for each of its elements.


     The source and destination buffer addresses must  be  8-byte
     aligned.


     This function can be used in JPEG with 12-bit precision.

PARAMETERS
     The function takes the following arguments:

     coeffs    Pointer to the output DCT coefficients. Note  that
               coeffs must be 8-byte aligned.


     block     Pointer to an 8x8 block. Note that block  must  be
               8-byte aligned.


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    mlibVideoDCT8x8S16S16B12(3MLIB)



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


SEE ALSO
     mlibVideoDCT2x2S16S16(3MLIB),
     mlibVideoDCT4x4S16S16(3MLIB),
     mlibVideoDCT8x8S16S16B10(3MLIB),
     mlibVideoDCT8x8S16S16B10NA(3MLIB),
     mlibVideoDCT8x8S16U8(3MLIB),
     mlibVideoDCT8x8S16U8NA(3MLIB),
     mlibVideoDCT16x16S16S16(3MLIB),
     mlibVideoDCT16x16S16S16B10(3MLIB), attributes(5)





































SunOS 5.11           Last change: 2 Mar 2007                    2