Manual Pages for UNIX Operating System command usage for man mlib_VideoIDCT8x8_U8_S16_DC

mediaLib Library Functions     mlib_VideoIDCT8x8_U8_S16_DC(3MLIB)



NAME
     mlib_VideoIDCT8x8_U8_S16_DC  -   inverse   Discrete   Cosine
     Transform

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

     mlib_status mlib_VideoIDCT8x8_U8_S16_DC(mlib_u8 *block,
          const mlib_s16 *coeffs, mlib_s32 stride);


DESCRIPTION
     The mlib_VideoIDCT8x8_U8_S16_DC() function can be used  only
     when  F(0,0) is nonzero. It computes the inverse DCT (called
     IDCT) for the destination IDCT block of  data  type  mlib_u8
     and  source  DCT  coefficients  of  data type mlib_s16. This
     function is not guaranteed to  be  IEEE-1180-compliant.  The
     output  of  the  IDCT  routine is the difference between the
     current block and the reference block. The difference  pixel
     can  occupy  nine bits and is represented as a 16-bit datum.
     The output must be added to the motion-compensated reference
     block in order to reconstruct the current block.

PARAMETERS
     The function takes the following arguments:

     block     Pointer to the current block. block must be 8-byte
               aligned.


     coeffs    Pointer to the  source  DCT  coefficients.  coeffs
               must be 8-byte aligned.


     stride    Stride, in  bytes,  between  adjacent  rows  in  a
               block. stride must be a multiple of eight..


RETURN VALUES
     The function returns MLIB_SUCCESS if  successful.  Otherwise
     it returns MLIB_FAILURE.

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









SunOS 5.11           Last change: 2 Mar 2007                    1






mediaLib Library Functions     mlib_VideoIDCT8x8_U8_S16_DC(3MLIB)



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Interface Stability         | Committed                   |
    |_____________________________|_____________________________|
    | MT-Level                    | MT-Safe                     |
    |_____________________________|_____________________________|


SEE ALSO
     mlib_VideoIDCT_IEEE_S16_S16(3MLIB),
     mlib_VideoIDCT8x8_S16_S16(3MLIB),
     mlib_VideoIDCT8x8_S16_S16_DC(3MLIB),
     mlib_VideoIDCT8x8_S16_S16_NA(3MLIB),
     mlib_VideoIDCT8x8_S16_S16_Q1(3MLIB),
     mlib_VideoIDCT8x8_U8_S16(3MLIB),
     mlib_VideoIDCT8x8_U8_S16_NA(3MLIB),
     mlib_VideoIDCT8x8_U8_S16_Q1(3MLIB), attributes(5)





































SunOS 5.11           Last change: 2 Mar 2007                    2