mlib_VideoDCT2x2_S16_S16 man page on SunOS
[printable version]
mlib_VideoDCT2x2_S16_S16(3mediaLib Library Funcmlib_VideoDCT2x2_S16_S16(3MLIB)
NAME
mlib_VideoDCT2x2_S16_S16 - forward Discrete Cosine Transform (DCT)
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>
mlib_status mlib_VideoDCT2x2_S16_S16(mlib_s16 coeffs[4],
const mlib_s16 block[4]);
DESCRIPTION
The mlib_VideoDCT2x2_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 dif‐
ference 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 2x2 motion-compensated block that is the dif‐
ference 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 │Committed │
├─────────────────────────────┼─────────────────────────────┤
│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 2 Mar 2007 mlib_VideoDCT2x2_S16_S16(3MLIB)
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