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1 perry 1 XScreenSaver
2 !!!XScreenSaver
3 NAME
4 SYNOPSIS
5 DESCRIPTION
6 OPTIONS
7 ENVIRONMENT
8 BUGS
9 TO DO
10 SEE ALSO
11 COPYRIGHT
12 AUTHOR
13 ----
14 !!NAME
15
16
17 vidwhacker - grab images and apply random filters to them
18 !!SYNOPSIS
19
20
21 __vidwhacker__ [[-display ''host:display.screen'']
22 [[-root] [[-verbose] [[-stdin] [[-stdout] [[-delay seconds]
23 [[-directory ''directory'']
24 !!DESCRIPTION
25
26
27 The ''vidwhacker'' program grabs an image from disk, or
28 from the system's video input, then applies random image
29 filters to it, and displays the result. The
30 ''vidwhacker'' program does not terminate until
31 killed.
32
33
34 It depends heavily on the various PBM tools (e.g.,
35 ppmrelief(1).)
36
37
38 Selection of random image files is done by running the
39 xscreensaver-getimage-file(1) program. Capture of
40 video frames (if requested) is done by running the
41 xscreensaver-getimage-video(1) program. The options
42 of whether to do video, and which directory to search for
43 images, are specified in the ''~/.xscreensaver''
44 file.
45 !!OPTIONS
46
47
48 ''vidwhacker'' accepts the following
49 options:
50
51
52 __-root__
53
54
55 Draw on the root window. This is the default.
56
57
58 __-verbose__
59
60
61 Print diagnostics.
62
63
64 __-stdin__
65
66
67 Instead of grabbing an image from disk or video, read an
68 image to maniupulate from stdin. This image must be in
69 ppm(5) format. The program will still perform
70 repeated random image transformations, but it will always
71 use this one image as its starting point.
72
73
74 __-delay__ ''seconds''
75
76
77 How long to sleep between images. Default 5 seconds (the
78 actual elapsed time is significantly longer, due to
79 processing time.)
80
81
82 __-stdout__
83
84
85 Instead of displaying the image on a window or on the root,
86 write the new image on stdout, and exit.
87
88
89 __-directory__ ''directory''
90
91
92 Use this directory instead of the __imageDirectory__
93 specified in the ''~/.xscreensaver'' file.
94 !!ENVIRONMENT
95
96
97 __DISPLAY__
98
99
100 to get the default host and display number.
101
102
103 __XENVIRONMENT__
104
105
106 to get the name of a resource file that overrides the global
107 resources stored in the RESOURCE_MANAGER
108 property.
109 !!BUGS
110
111
112 It's slow.
113 !!TO DO
114
115
116 It might be interesting to rewrite this to use
117 gimp(1) plugins instead of the pbm tools. It probably
118 wouldn't be any faster, but there would be a wider variety
119 of effects available.
120 !!SEE ALSO
121
122
123 X(1), xscreensaver(1),
124 xscreensaver-getimage-file(1),
125 xscreensaver-getimage-video(1), xv(1),
126 ppmtogif(1), cjpeg(1)
127 !!COPYRIGHT
128
129
130 Copyright 1998-2001 by Jamie Zawinski. Permission to use,
131 copy, modify, distribute, and sell this software and its
132 documentation for any purpose is hereby granted without fee,
133 provided that the above copyright notice appear in all
134 copies and that both that copyright notice and this
135 permission notice appear in supporting documentation. No
136 representations are made about the suitability of this
137 software for any purpose. It is provided
138 !!AUTHOR
139
140
141 Jamie Zawinski
142 ----
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