mlib_VideoIDCT8x8_U8_S16_Q1(3MLIB)

Name

mlib_VideoIDCT8x8_U8_S16_Q1 - inverse Discrete Cosine Transform

Synopsis

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

mlib_status mlib_VideoIDCT8x8_U8_S16_Q1(mlib_u8 *block,
     const mlib_s16 coeffs[64], mlib_s32 stride);

Description

The mlib_VideoIDCT8x8_U8_S16_Q1() function can be used only when F(u,v) are nonzero and only when 0 ≤ u < 4 and 0 ≤ v < 4. The stride applies to the block that is part of the frame currently being reconstructed.

Parameters

The function takes the following arguments:

block

Pointer to the current block. block must be 8-byte aligned

coeffs

Pointer to the source DCT coefficients. coeffs 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 Committed MT-Level MT-Safe

See also

mlib_VideoIDCT_IEEE_S16_S16(3MLIB), mlib_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), attributes(5)