vidwhacker - grab images and apply random filters to them
[-root? [-verbose? [-stdin? [-stdout? [-delay seconds?
The vidwhacker program grabs an image from disk, or
from the system's video input, then applies random image
filters to it, and displays the result. The
vidwhacker program does not terminate until
It depends heavily on the various PBM tools (e.g.,
Selection of random image files is done by running the
xscreensaver-getimage-file(1) program. Capture of
video frames (if requested) is done by running the
xscreensaver-getimage-video(1) program. The options
of whether to do video, and which directory to search for
images, are specified in the /.xscreensaver
vidwhacker accepts the following
Draw on the root window. This is the default.
Instead of grabbing an image from disk or video, read an
image to maniupulate from stdin. This image must be in
ppm(5) format. The program will still perform
repeated random image transformations, but it will always
use this one image as its starting point.
How long to sleep between images. Default 5 seconds (the
actual elapsed time is significantly longer, due to
Instead of displaying the image on a window or on the root,
write the new image on stdout, and exit.
Use this directory instead of the imageDirectory
specified in the /.xscreensaver file.
to get the default host and display number.
to get the name of a resource file that overrides the global
resources stored in the RESOURCE_MANAGER
It might be interesting to rewrite this to use
gimp(1)? plugins instead of the pbm tools. It probably
wouldn't be any faster, but there would be a wider variety
of effects available.
Copyright 1998-2001 by Jamie Zawinski. 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