xvattr(1)

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

perl v5.10.0 2009-07-28 XVATTR(1)