'\" te
.\" Copyright (c) 2007, Sun Microsystems, Inc.  All Rights Reserved 
.TH mlib_VideoInterpY_U8_U8 3MLIB "2 Mar 2007" "SunOS 5.11" "mediaLib Library Functions"
.SH NAME
mlib_VideoInterpY_U8_U8 \- half-pixel interpolation in the Y direction
.SH SYNOPSIS
.LP
.nf
cc [ \fIflag\fR... ] \fIfile\fR... \fB-lmlib\fR [ \fIlibrary\fR... ]
#include <mlib.h>

\fBmlib_status\fR \fBmlib_VideoInterpY_U8_U8\fR(\fBmlib_u8 *\fR\fIcurr_block\fR,
     \fBconst mlib_u8 *\fR\fIref_block\fR, \fBmlib_s32\fR \fIwidth\fR, \fBmlib_s32\fR \fIheight\fR,
     \fBmlib_s32\fR \fIfrm_stride\fR, \fBmlib_s32\fR \fIfld_stride\fR);
.fi

.SH DESCRIPTION
.sp
.LP
The \fBmlib_VideoInterpY_U8_U8()\fR function performs half-pixel interpolation in the Y direction for a reference block of data type mlib_u8 and a current block of data type mlib_u8. 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. curr_block must be 8-byte aligned.
.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\fIwidth\fR\fR
.ad
.RS 14n
.rt  
Width of the blocks.
.RE

.sp
.ne 2
.mk
.na
\fB\fIheight\fR\fR
.ad
.RS 14n
.rt  
Height of the blocks.
.RE

.sp
.ne 2
.mk
.na
\fB\fIfrm_stride\fR\fR
.ad
.RS 14n
.rt  
Stride, in bytes, between adjacent rows in a frame in both the current block and reference block. frm_stride must be a multiple of eight.
.RE

.sp
.ne 2
.mk
.na
\fB\fIfld_stride\fR\fR
.ad
.RS 14n
.rt  
Stride, in bytes, between adjacent rows in a field in both the current block and reference block. fld_stride must be a multiple of eight.
.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\fR(3MLIB), \fBmlib_VideoCopyRef_U8_U8_16x16\fR(3MLIB), \fBmlib_VideoCopyRefAve_U8_U8\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_16x16\fR(3MLIB), \fBmlib_VideoP64Decimate_U8_U8\fR(3MLIB), \fBmlib_VideoP64Loop_S16_U8\fR(3MLIB), \fBmlib_VideoP64Loop_U8_U8\fR(3MLIB), \fBattributes\fR(5)