NAME
xanalogtv - Simulate reception on an old analog TV set
SYNOPSIS
xanalogtv [-display
host:display.screen] [-window] [-root] [-install] [-visual
visual] [-cycle] [-no-cycle]
DESCRIPTION
xanalogtv shows a simulation of an old
TV set showing test patterns and any other images you have
provided. It reproduces a wide range of TV reception bummage: snow,
bloom, ghosting, and loss of vertical and horizontal sync. It also
simulates the TV warming up. It will cycle through 12 channels,
some with images you give it, and some with color bars or nothing
but static.
The images that it uses will be grabbed from the portion of the
screen underlying the window, or from the system's video input, or
from a random file on disk, as indicated by the
grabDesktopImages, grabVideoFrames, and
chooseRandomImages options in the ~/.xscreensaver
file; see xscreensaver-demo(1)
for more details. It looks best with a video input or your digital
photo collection.
OPTIONS
xanalogtv accepts the following options:
- -window
- Draw on a newly-created window. This is the default.
- -root
- Draw on the root window.
- -install
- Install a private colormap for the window.
- -visual visual
- Specify which visual to use. Legal values are the name of a
visual class, or the id number (decimal or hex) of a specific
visual.
ENVIRONMENT
- DISPLAY
- to get the default host and display number.
- XENVIRONMENT
- to get the name of a resource file that overrides the global
resources stored in the RESOURCE_MANAGER property.
X RESOURCES
Notable X resources supported include the
following which correspond to standard TV controls:
analogTVTint, analogTVColor,
analogTVBrightness, and analogTVContrast. They range
from 0 to 100, except for tint which is an angle between -180 and
+180.
SEE ALSO
X(1),
xteevee(1),
apple2(1),
bsod(1),
xscreensaver(1),
xscreensaver-demo(1),
xscreensaver-getimage(1)
COPYRIGHT
Copyright © 2003 by Trevor Blackwell.
Permission to use, copy, modify, distribute, and sell this software
and its documentation for any purpose is hereby granted without
fee, provided that the above copyright notice appear in all copies
and that both that copyright notice and this permission notice
appear in supporting documentation. No representations are made
about the suitability of this software for any purpose. It is
provided "as is" without express or implied warranty.
AUTHOR
Trevor Blackwell <tlb@tlb.org>