mlib_VideoIDCT_IEEE_S16_S1mediaLib Library Fmlib_VideoIDCT_IEEE_S16_S16(3MLIB)NAMEmlib_VideoIDCT_IEEE_S16_S16 - IEEE-1180 compliant inverse Discrete
Cosine Transform
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>
mlib_status mlib_VideoIDCT_IEEE_S16_S16(mlib_s16 block[64],
const mlib_s16 coeffs[64]);
DESCRIPTION
The mlib_VideoIDCT_IEEE_S16_S16() function computes the inverse DCT
(called IDCT) for the output IDCT block of data type mlib_s16 and input
DCT coefficients of data type mlib_s16. This function is guaranteed to
be IEEE-1180 -compliant. The output of the IDCT routine is the differ‐
ence 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 an 8x8 motion-compensated block that is the dif‐
ference between the reference block and the current block.
block need not be 8-byte aligned.
coeffs Pointer to the source DCT coefficients. coeffs need not be
8-byte aligned.
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 │Committed │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │MT-Safe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOmlib_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_DC(3MLIB), mlib_VideoIDCT8x8_U8_S16_NA(3MLIB),
mlib_VideoIDCT8x8_U8_S16_Q1(3MLIB), attributes(5)SunOS 5.10 2 Mar 2007mlib_VideoIDCT_IEEE_S16_S16(3MLIB)
