NAME
xvattr - Query/Set X11 XVideo Setting(s)
SYNOPSIS
xvattr [options...]
This program is used for getting and setting X11 Xv attributes such as
XV_BRIGHTNESS, XV_CONTRAST, XV_SATURATION, XV_HUE, XV_COLORKEY, ...
For this program to work, you must have a version of X11 with the
XVideo extension and a graphics card that has Xv graphics acceleration.
Note: On some cards XV_BRIGHTNESS and XV_CONTRAST are not listed among
the available attributes, but they can still be set/changed.
OPTIONS
With no options, all parameters are displayed.
Long options are handled by GNU getopts and follow those rules. In
particular, options that are specified with a double dash (--) rather
than a single dash (-), can be abbreviated as long as they are unique.
Long parameters that need a value specified may have the parameter and
the value separated with blank space or an optional equals sign (and no
intervening space).
For example the following are all equivalent:
xvattr -a XV_BRIGHTNESS xvattr --attribute XV_BRIGHTNESS xvattr --att
XV_BRIGHTNESS xvattr --att=XV_BRIGHTNESS
Example:
> xvattr
Adaptor: 0
Name: Matrox G-Series Backend Scaler
Port: 46
Name: XV_COLORKEY
Flags: XvGettable XvSettable
Min value: 0
Max value: 16777215
Current value: 66046
{-a | --attribute} attribute name
Show value of attribute attribute name
Example:
> xvattr -a XV_BRIGHTNESS
XV_BRIGHTNESS = 24
{-a | --attribute} attribute name [-v | --value] value
Set attribute attribute name to value value.
Example:
> xvattr -a XV_COLORKEY -v 10
XV_COLORKEY set to 10
{-p | --port} port number
Get the attribute on the specified port. If -p is not set, the
first available port is used.
Example:
> xvattr -p 66
Found Xv 2.2
Adaptor: 0
Name: SIS Video Overlay
Port: 66
Name: XV_COLORKEY
Flags: XvGettable XvSettable
Min value: 0
Max value: 16777215
Current value: 66046
Name: XV_BRIGHTNESS
Flags: XvGettable XvSettable
Min value: -128
Max value: 127
Current value: 0
Name: XV_CONTRAST
Flags: XvGettable XvSettable
Min value: 0
Max value: 255
Current value: 128
AUTHOR
Bjoern Englund. Send bug reports to "d4bjorn@dtek.chalmers.se"
"rocky@panix.com" turned the README into this document.
SEE ALSO
See also xvinfo and XvQueryAdaptors, XvSetPortAttribute, and
XvGetPortAttribute.
COPYRIGHT
Copyright (C) 2001-2002 Bjoern Englund
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA