'\" te
.\" Copyright (c) 2007, Sun Microsystems, Inc.  All Rights Reserved 
.TH mlib_VideoP64Loop_U8_U8 3MLIB "2 Mar 2007" "SunOS 5.11" "mediaLib Library Functions"
.SH NAME
mlib_VideoP64Loop_U8_U8 \- applies a 2-dimensional (2D) 3x3 spatial filter on the reference block
.SH SYNOPSIS
.LP
.nf
cc [ \fIflag\fR... ] \fIfile\fR... \fB-lmlib\fR [ \fIlibrary\fR... ]
#include <mlib.h>

\fBmlib_status\fR \fBmlib_VideoP64Loop_U8_U8\fR(\fBmlib_u8 *\fR\fIcurr_block\fR,
     \fBconst mlib_u8 *\fR\fIref_block\fR, \fBmlib_s32\fR \fIstride\fR);
.fi

.SH DESCRIPTION
.sp
.LP
The \fBmlib_VideoP64Loop_U8_U8()\fR function applies a 2-dimensional (2D) 3x3 spatial filter on the reference block. The filter is separable into 1D horizontal and vertical functions, where the filter coefficients are 0.25, 0.5, 0.25, except at the block edges where the coefficients are 0, 1, 0. In this mode, the motion-compensated reference block becomes the current block. Thus, the stride applies to both the input reference block and the current block.
.SH PARAMETERS
.sp
.LP
The function takes the following arguments:
.sp
.ne 2
.mk
.na
\fB\fIcurr_block\fR\fR
.ad
.RS 14n
.rt  
Pointer to the current block.
.RE

.sp
.ne 2
.mk
.na
\fB\fIref_block\fR\fR
.ad
.RS 14n
.rt  
Pointer to the reference block.
.RE

.sp
.ne 2
.mk
.na
\fB\fIstride\fR\fR
.ad
.RS 14n
.rt  
Stride, in bytes, between adjacent rows in both the current block and the reference block.
.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_VideoAddBlock_U8_S16\fR(3MLIB), \fBmlib_VideoCopyRef_S16_U8\fR(3MLIB), \fBmlib_VideoCopyRef_S16_U8_16x16\fR(3MLIB), \fBmlib_VideoCopyRef_U8_U8_16x16\fR(3MLIB), \fBmlib_VideoCopyRefAve_U8_U8_16x16\fR(3MLIB), \fBmlib_VideoH263OverlappedMC_S16_U8\fR(3MLIB), \fBmlib_VideoH263OverlappedMC_U8_U8\fR(3MLIB), \fBmlib_VideoInterpAveX_U8_U8\fR(3MLIB), \fBmlib_VideoInterpAveX_U8_U8_16x16\fR(3MLIB), \fBmlib_VideoInterpAveXY_U8_U8\fR(3MLIB), \fBmlib_VideoInterpAveXY_U8_U8_16x16\fR(3MLIB), \fBmlib_VideoInterpAveY_U8_U8\fR(3MLIB), \fBmlib_VideoInterpAveY_U8_U8_16x16\fR(3MLIB), \fBmlib_VideoInterpX_S16_U8\fR(3MLIB), \fBmlib_VideoInterpX_S16_U8_16x16\fR(3MLIB), \fBmlib_VideoInterpX_U8_U8\fR(3MLIB), \fBmlib_VideoInterpXY_S16_U8\fR(3MLIB), \fBmlib_VideoInterpXY_S16_U8_16x16\fR(3MLIB), \fBmlib_VideoInterpXY_U8_U8\fR(3MLIB), \fBmlib_VideoInterpXY_U8_U8_16x16\fR(3MLIB), \fBmlib_VideoInterpY_S16_U8\fR(3MLIB), \fBmlib_VideoInterpY_S16_U8_16x16\fR(3MLIB), \fBmlib_VideoInterpY_U8_U8\fR(3MLIB), \fBmlib_VideoInterpY_U8_U8_16x16\fR(3MLIB), \fBmlib_VideoP64Decimate_U8_U8\fR(3MLIB), \fBmlib_VideoP64Loop_S16_U8\fR(3MLIB), \fBattributes\fR(5)