'\" te
.\" Copyright (c) 2007, Sun Microsystems, Inc.  All Rights Reserved 
.TH mlib_VideoIDCT8x8_S16_S16_Q1_Mismatch 3MLIB "2 Mar 2007" "SunOS 5.11" "mediaLib Library Functions"
.SH NAME
mlib_VideoIDCT8x8_S16_S16_Q1_Mismatch \- inverse Discrete Cosine Transform
.SH SYNOPSIS
.LP
.nf
cc [ \fIflag\fR... ] \fIfile\fR... \fB-lmlib\fR [ \fIlibrary\fR... ]
#include <mlib.h>

\fBmlib_status\fR \fBmlib_VideoIDCT8x8_S16_S16_Q1_Mismatch\fR(
     \fBmlib_s16\fR \fIblock[64]\fR, \fBconst mlib_s16\fR \fIcoeffs[64]\fR);
.fi

.SH DESCRIPTION
.sp
.LP
The \fBmlib_VideoIDCT8x8_S16_S16_Q1_Mismatch()\fR function computes the inverse IDCT in the inter mode.
.sp
.LP
This function is similar to \fBmlib_VideoIDCT8x8_S16_S16_Q1()\fR which should only be used when \fBcoeffs[u][v]\fR  (\fBu,v = 0...7\fR) are non-zero only for \fBu\fR and \fBv\fR less then \fB4\fR. However, this function also allows element \fBcoeffs[7][7]\fR to be non-zero. The primary benefit of this modification is that it can handle situations where \fBcoeffs[7][7]\fR 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.
.SH PARAMETERS
.sp
.LP
The function takes the following arguments:
.sp
.ne 2
.mk
.na
\fB\fIblock\fR\fR
.ad
.RS 10n
.rt  
Pointer to an 8x8 motion-compensated block which is the difference between the reference block and current block. \fBblock\fR must be 8-byte aligned.
.RE

.sp
.ne 2
.mk
.na
\fB\fIcoeffs\fR\fR
.ad
.RS 10n
.rt  
Pointer to the input DCT coefficients. \fBcoeffs\fR must be 8-byte aligned. \fBcoeffs\fR should be in S12 range or it should be obtained from the corresponding forward DCT.
.RE

.SH RETURN VALUES
.sp
.LP
The function returns \fBMLIB_SUCCESS\fR if successful. Otherwise it returns \fBMLIB_FAILURE\fR.
.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp

.sp
.TS
tab() box;
cw(2.75i) |cw(2.75i) 
lw(2.75i) |lw(2.75i) 
.
ATTRIBUTE TYPEATTRIBUTE VALUE
_
Interface StabilityCommitted
_
MT-LevelMT-Safe
.TE

.SH SEE ALSO
.sp
.LP
\fBmlib_VideoIDCT8x8_S16_S16_Q1\fR(3MLIB), \fBattributes\fR(5)