mlib_videodct8x8_s16_u8(3mlib) sunos man page | unix.com

mlib_VideoDCT8x8_S16_U8(3MLIB)				    mediaLib Library Functions				    mlib_VideoDCT8x8_S16_U8(3MLIB)

NAME
       mlib_VideoDCT8x8_S16_U8 - forward Discrete Cosine Transform (DCT)

SYNOPSIS
       cc [ flag... ] file... -lmlib [ library... ]
       #include <mlib.h>

       mlib_status mlib_VideoDCT8x8_S16_U8(mlib_s16 coeffs[64], const mlib_u8 *block, mlib_s32 stride);

DESCRIPTION
       The mlib_VideoDCT8x8_S16_U8() function computes the forward DCT for the destination DCT coefficients of data type mlib_s16 and source block
       of data type mlib_u8.  The input to the DCT 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.  In the case of an mlib_s16 source data type and an mlib_u8 output data
       type, the stride applies to the block that is part of the frame currently being encoded.

PARAMETERS
       The function takes the following arguments:

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

       block	       Pointer to an 8x8 block in the current frame. block 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 attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       mlib_VideoDCT2x2_S16_S16(3MLIB),  mlib_VideoDCT4x4_S16_S16(3MLIB),  mlib_VideoDCT8x8_S16_S16(3MLIB),   mlib_VideoDCT8x8_S16_S16_B12(3MLIB),
       mlib_VideoDCT8x8_S16_S16_NA(3MLIB),  mlib_VideoDCT8x8_S16_U8(3MLIB),  mlib_VideoDCT8x8_S16_U8_NA(3MLIB), mlib_VideoDCT16x16_S16_S16(3MLIB),
       mlib_VideoDCT16x16_S16_S16_B10(3MLIB), mlib_VideoDeQuantize_S16(3MLIB), mlib_VideoDeQuantizeInit_S16(3MLIB), mlib_VideoQuantize_S16(3MLIB),
       mlib_VideoQuantizeInit_S16(3MLIB), attributes(5)

SunOS 5.10							    9 Nov 2004					    mlib_VideoDCT8x8_S16_U8(3MLIB)