'\" te
.\" Copyright (c) 2007, Sun Microsystems, Inc.  All Rights Reserved 
.TH mlib_VideoColorARGB2JFIFYCC420 3MLIB "23 May 2007" "SunOS 5.11" "mediaLib Library Functions"
.SH NAME
mlib_VideoColorARGB2JFIFYCC420 \- ARGB to JFIF YCbCr color conversion
.SH SYNOPSIS
.LP
.nf
cc [ \fIflag\fR... ] \fIfile\fR... \fB-lmlib\fR [ \fIlibrary\fR... ]
#include <mlib.h>

\fBmlib_status\fR \fBmlib_VideoColorARGB2JFIFYCC420\fR(\fBmlib_u8 *\fR\fIy0\fR, 
     \fBmlib_u8 *\fR\fIy1\fR, \fBmlib_u8 *\fR\fIcb\fR, \fBmlib_u8 *\fR\fIcr\fR, \fBconst mlib_u8 *\fR\fIargb0\fR, 
     \fBconst mlib_u8 *\fR\fIargb1\fR, \fBmlib_s32\fR \fIn\fR);
.fi

.SH DESCRIPTION
.sp
.LP
The \fBmlib_VideoColorARGB2JFIFYCC420()\fR function performs color space conversion from ARGB to YCbCr together with sampling rate conversion when used in the JPEG File Interchange Format (JFIF).
.SH PARAMETERS
.sp
.LP
The function takes the following arguments:
.sp
.ne 2
.mk
.na
\fB\fIy0\fR\fR
.ad
.RS 9n
.rt  
Pointer to upper destination Y component row. y0 must be 8-byte aligned.
.RE

.sp
.ne 2
.mk
.na
\fB\fIy1\fR\fR
.ad
.RS 9n
.rt  
Pointer to lower destination Y component row. y1 must be 8-byte aligned.
.RE

.sp
.ne 2
.mk
.na
\fB\fIcb\fR\fR
.ad
.RS 9n
.rt  
Pointer to destination Cb component row. cb must be 8-byte aligned.
.RE

.sp
.ne 2
.mk
.na
\fB\fIcr\fR\fR
.ad
.RS 9n
.rt  
Pointer to destination Cr component row. cr must be 8-byte aligned.
.RE

.sp
.ne 2
.mk
.na
\fB\fIargb0\fR\fR
.ad
.RS 9n
.rt  
Pointer to upper source ARGB multi-component row. argb0 must be 8-byte aligned.
.RE

.sp
.ne 2
.mk
.na
\fB\fIargb1\fR\fR
.ad
.RS 9n
.rt  
Pointer to lower source ARGB multi-component row. argb1 must be 8-byte aligned.
.RE

.sp
.ne 2
.mk
.na
\fB\fIn\fR\fR
.ad
.RS 9n
.rt  
Length of Y component row. n must be even. The length of Cb and Cr component rows must be n/2. The length of the ARGB multi-component row must be 4*n.
.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_VideoColorABGR2JFIFYCC420\fR(3MLIB), \fBmlib_VideoColorABGR2JFIFYCC422\fR(3MLIB), \fBmlib_VideoColorARGB2JFIFYCC422\fR(3MLIB), \fBmlib_VideoColorRGB2JFIFYCC420\fR(3MLIB), \fBmlib_VideoColorRGB2JFIFYCC422\fR(3MLIB), \fBattributes\fR(5)