Content-type: text/html Man page of mlib_VideoIDCT8x8_S16_S16_Q1_Mismatch

mlib_VideoIDCT8x8_S16_S16_Q1_Mismatch

Section: mediaLib Library Functions (3MLIB)
Updated: 2 Mar 2007
Index Return to Main Contents
 

NAME

mlib_VideoIDCT8x8_S16_S16_Q1_Mismatch - inverse Discrete Cosine Transform  

SYNOPSIS

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

mlib_status mlib_VideoIDCT8x8_S16_S16_Q1_Mismatch(
    mlib_s16 block[64], const mlib_s16 coeffs[64]);

 

DESCRIPTION

The mlib_VideoIDCT8x8_S16_S16_Q1_Mismatch() function computes the inverse IDCT in the inter mode.

This function is similar to mlib_VideoIDCT8x8_S16_S16_Q1() which should only be used when coeffs[u][v] (u,v = 0...7) are non-zero only for u and v less then 4. However, this function also allows element coeffs[7][7] to be non-zero. The primary benefit of this modification is that it can handle situations where coeffs[7][7] has been made non-zero by MPEG mismatch-control, allowing a simplified version of the IDCT to be undertaken for a much larger number of situations.  

PARAMETERS

The function takes the following arguments:

block

Pointer to an 8x8 motion-compensated block which is the difference between the reference block and current block. block must be 8-byte aligned.

coeffs

Pointer to the input DCT coefficients. coeffs must be 8-byte aligned. coeffs should be in S12 range or it should be obtained from the corresponding forward DCT.

 

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 TYPEATTRIBUTE VALUE

Interface StabilityCommitted

MT-Level

 

SEE ALSO

mlib_VideoIDCT8x8_S16_S16_Q1(3MLIB), attributes(5)


 

Index

NAME
SYNOPSIS
DESCRIPTION
PARAMETERS
RETURN VALUES
ATTRIBUTES
SEE ALSO

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Time: 02:38:20 GMT, October 02, 2010