xanalogtv - Simulate reception on an old analog TV set

xanalogtv [-display host:display.screen] [-window] [-root] [-install] [-visual visual] [-cycle] [-no-cycle]

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.

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.

-cycle

Cycle through all the available modes. This is the default.

-no-cycle

Don't cycle modes.

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.

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.

X(1), xteevee(1), apple2(1), bsod(1), xscreensaver(1), xscreensaver-demo(1), xscreensaver-getimage(1)

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.

Trevor Blackwell <tlb@tlb.org>