Manual Pages for UNIX Operating System command usage for man mlib_VideoDCT8x8Quantize_S16_S16_B12_NA

mediaLib Library Functions
                   mlib_VideoDCT8x8Quantize_S16_S16_B12_NA(3MLIB)



NAME
     mlib_VideoDCT8x8Quantize_S16_S16_B12_NA -  forward  Discrete
     Cosine Transform (DCT) and quantization

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

     mlib_status mlib_VideoDCT8x8Quantize_S16_S16_B12_NA(
          mlib_s16 coeffs[64], const mlib_s16 block[64],
          const mlib_d64 dqtable[64]);


DESCRIPTION
     The mlib_VideoDCT8x8Quantize_S16_S16_B12_NA() function  com-
     putes  the  forward  DCT  and then quantizes the DCT coeffi-
     cients.        It's         a         combination         of
     mlib_VideoDCT8x8_S16_S16_B12_NA()                        and
     mlib_VideoQuantize_S16() for better performance. The  source
     to  the DCT routine can occupy up to 12 bits for each of its
     elements, i.e., should be within the range of [-2048, 2047].


     This function requires no special address alignment.


     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:

     coeffs     Pointer to the quantized DCT coefficients.


     block      Pointer to an 8x8 block.


     dqtable    Pointer to the quantization  table  generated  by
                mlib_VideoQuantizeInit_S16().


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_VideoDCT8x8Quantize_S16_S16_B12_NA(3MLIB)



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


SEE ALSO
     mlib_VideoDCT8x8Quantize_S16_S16_B12(3MLIB),
     mlib_VideoDCT8x8Quantize_S16_U8(3MLIB),
     mlib_VideoDCT8x8Quantize_S16_U8_NA(3MLIB),
     mlib_VideoQuantizeInit_S16(3MLIB), attributes(5)








































SunOS 5.11           Last change: 2 Mar 2007                    2






mediaLib Library Functions
                   mlib_VideoDCT8x8Quantize_S16_S16_B12_NA(3MLIB)






















































SunOS 5.11           Last change: 2 Mar 2007                    3