mlib_VideoDCT8x8_S16_S16(3MLIB) mediaLib Library Functions mlib_VideoDCT8x8_S16_S16(3MLIB)
NAME
mlib_VideoDCT8x8_S16_S16 - forward Discrete Cosine Transform (DCT)
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>
mlib_status mlib_VideoDCT8x8_S16_S16(mlib_s16 coeffs[64], const mlib_s16 block[64]);
DESCRIPTION
The mlib_VideoDCT8x8_S16_S16() function computes the forward DCT for the destination DCT coefficients of data type mlib_s16 and a source
block of data type mlib_s16. The input to the DCT routine is the difference between the current block and the reference block. The differ-
ence pixel can occupy nine bits and is represented as a 16-bit datum. The source and destination buffer addresses must be 8-byte aligned.
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 motion-compensated block that is the difference between the reference block and the current block. block
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_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_S16(3MLIB)