vidwhacker - grab images and apply random filters to them
] [-root] [-verbose]
[-stdin] [-stdout] [-delay seconds] [-directory directory
program grabs an image from disk, or from the system's
video input, then applies random image filters to it, and displays the result.
program does not terminate until killed.
It depends heavily on the various PBM tools (e.g., ppmrelief
Selection of random image files is done by running the
(1) program. Capture of video frames (if
requested) is done by running the xscreensaver-getimage-video
program. The options of whether to do video, and which directory to search for
images, are specified in the ~/.xscreensaver
accepts the following options:
- Draw on the root window. This is the default.
- Print diagnostics.
- Instead of grabbing an image from disk or video, read an
image to manipulate 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
- -delay seconds
- How long to sleep between images. Default 5 seconds (the
actual elapsed time is significantly longer, due to processing time.)
- Instead of displaying the image on a window or on the root,
write the new image on stdout, and exit.
- -directory directory
- Use this directory instead of the imageDirectory
specified in the ~/.xscreensaver file.
- Display the current frame rate and CPU load.
- 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 property.
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 "as is"
without express or implied warranty.
Jamie Zawinski <email@example.com>, 18-Jan-98.