mlib_VideoIDCT8x8_S16_S16(3MLIB) mediaLib Library Functions mlib_VideoIDCT8x8_S16_S16(3MLIB)
NAME
mlib_VideoIDCT8x8_S16_S16 - inverse Discrete Cosine Transform
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>
mlib_status mlib_VideoIDCT8x8_S16_S16(mlib_s16 block[64], const mlib_s16 coeffs[64]);
DESCRIPTION
The mlib_VideoIDCT8x8_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 not guaranteed to be IEEE-1180-compliant. The output of the IDCT 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. 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 difference between the reference block and the current block. block
must be 8-byte aligned.
coeffs Pointer to the source DCT coefficients. coeffs must 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 |Evolving |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
SEE ALSO
mlib_VideoIDCT_IEEE_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 9 Nov 2004 mlib_VideoIDCT8x8_S16_S16(3MLIB)