Manual Pages for UNIX Operating System command usage for man mlib_VideoDCT8x8Quantize_S16_U8

mediaLib Library Functions
                           mlib_VideoDCT8x8Quantize_S16_U8(3MLIB)



NAME
     mlib_VideoDCT8x8Quantize_S16_U8 -  forward  Discrete  Cosine
     Transform (DCT) and quantization

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

     mlib_status mlib_VideoDCT8x8Quantize_S16_U8(
          mlib_s16 coeffs[64], const mlib_u8 *block,
          const mlib_d64 dqtable[64], mlib_s32 stride);


DESCRIPTION
     The mlib_VideoDCT8x8Quantize_S16_U8() function computes  the
     forward  DCT and then quantizes the DCT coefficients. It's a
     combination      of      mlib_VideoDCT8x8_S16_U8()       and
     mlib_VideoQuantize_S16() for better performance.


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


     This function can be used in JPEG with 8-bit  precision,  or
     in MPEG for the intra mode.

PARAMETERS
     The function takes the following arguments:

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


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


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


     stride     Stride in bytes  between  adjacent  rows  in  the
                block.  Note  that  stride  must be a multiple of
                eight.


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_VideoDCT8x8Quantize_S16_U8(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_VideoDCT8x8Quantize_S16_S16_B12(3MLIB),
     mlib_VideoDCT8x8Quantize_S16_S16_B12_NA(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_U8(3MLIB)






















































SunOS 5.11           Last change: 2 Mar 2007                    3