Manual Pages for UNIX Operating System command usage for man mlib_VideoDeQuantizeIDCT8x8_S16_S16_B12

mediaLib Library Functions
                   mlib_VideoDeQuantizeIDCT8x8_S16_S16_B12(3MLIB)



NAME
     mlib_VideoDeQuantizeIDCT8x8_S16_S16_B12 - dequantization and
     inverse Discrete Cosine Transform (IDCT)

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

     mlib_status mlib_VideoDeQuantizeIDCT8x8_S16_S16_B12(
          mlib_s16 block[64], const mlib_s16 coeffs[64],
          const mlib_d64 dqtable[64]);


DESCRIPTION
     The    mlib_VideoDeQuantizeIDCT8x8_S16_S16_B12()    function
     dequantizes the quantized DCT coefficients and then computes
     the    inverse    DCT.     It's     a     combination     of
     mlib_VideoDeQuantize_S16()                               and
     mlib_VideoIDCT8x8_S16_S16_B12() for better performance.  The
     output  of  this  function  should be within the range of [-
     2048, 2047] if coeffs is  obtained  from  the  corresponding
     mlib_VideoDCT8x8Quantize_S16_S16_B12() function.


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


     This function can be used in JPEG with 12-bit precision,  or
     in MPEG for the inter mode.

PARAMETERS
     The function takes the following arguments:

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


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


     dqtable    Pointer to the dequantization table generated  by
                mlib_VideoDeQuantizeInit_S16().


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





SunOS 5.11           Last change: 2 Mar 2007                    1






mediaLib Library Functions
                   mlib_VideoDeQuantizeIDCT8x8_S16_S16_B12(3MLIB)



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



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


SEE ALSO
     mlib_VideoDeQuantizeIDCT8x8_S16_S16_B12_NA(3MLIB),
     mlib_VideoDeQuantizeIDCT8x8_U8_S16(3MLIB),
     mlib_VideoDeQuantizeIDCT8x8_U8_S16_NA(3MLIB),
     mlib_VideoDeQuantizeInit_S16(3MLIB), attributes(5)


































SunOS 5.11           Last change: 2 Mar 2007                    2






mediaLib Library Functions
                   mlib_VideoDeQuantizeIDCT8x8_S16_S16_B12(3MLIB)






















































SunOS 5.11           Last change: 2 Mar 2007                    3