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XScreenSaver(1) 								  XScreenSaver(1)

       vidwhacker - grab images and apply random filters to them

       vidwhacker  [-display  host:display.screen]  [-root] [-verbose] [-stdin] [-stdout] [-delay
       seconds] [-directory directory]

       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 killed.

       It depends heavily on the various PBM tools (e.g., ppmrelief(1).)

       Selection of random image files is done by running the xscreensaver-getimage-file(1)  pro-
       gram.   Capture	of video frames (if requested) is done by running the xscreensaver-getim-
       age-video(1) program.  The options of whether to do video, and which directory  to  search
       for images, are specified in the ~/.xscreensaver file.

       vidwhacker accepts the following options:

       -root   Draw on the root window.  This is the default.

	       Print diagnostics.

       -stdin  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.

       -delay seconds
	       How long to sleep between images.  Default 5 seconds (the actual elapsed  time  is
	       significantly longer, due to processing time.)

       -stdout 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

       DISPLAY 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's slow.

       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 avail-

       X(1),  xscreensaver(1),	 xscreensaver-getimage-file(1),   xscreensaver-getimage-video(1),
       xv(1), ppmtogif(1), cjpeg(1)

       Copyright  (C)  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 repre-
       sentations  are	made  about the suitability of this software for any purpose.  It is pro-
       vided "as is" without express or implied warranty.

       Jamie Zawinski <jwz@jwz.org>, 18-Jan-98.

X Version 11				    17-Jun-99				  XScreenSaver(1)
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