blob: aa3875e9cddbf792d616799344dc7b745163003a (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML><HEAD><TITLE>Lispmtopgm User Manual</TITLE></HEAD>
<BODY>
<H1>lispmtopgm</H1>
Updated: 06 March 1990
<BR>
<A HREF="#index">Table Of Contents</A>
<A NAME="lbAB"> </A>
<H2>NAME</H2>
lispmtopgm - convert a Lisp Machine bitmap file to PGM
<A NAME="lbAC"> </A>
<H2>SYNOPSIS</H2>
<B>lispmtopgm</B>
[<I>lispmfile</I>]
<A NAME="lbAD"> </A>
<H2>DESCRIPTION</H2>
<p>This program is part of <a href="index.html">Netpbm</a>.
<p><b>listpmfile</b> reads a Lisp Machine bitmap as input and
produces a PGM image as output.
<P>This is the file format written by the tv:write-bit-array-file
function on TI Explorer and Symbolics lisp machines.
<P>Multi-plane bitmaps on lisp machines are color; but the Lispm image
file format does not include a color map, so we must treat it as a
monochrome instead and produce PGM. This is unfortunate.
<A NAME="lbAE"> </A>
<H2>SEE ALSO</H2>
<A HREF="pgmtolispm.html">pgmtolispm</A>,
<A HREF="pgm.html">pgm</A>
<A NAME="lbAF"> </A>
<H2>LIMITATIONS</H2>
The Lispm bitmap file format is a bit quirky; Usually the image in the file
has its width rounded up to the next higher multiple of 32, but not always.
If the width is not a multiple of 32, we don't deal with it properly, but
because of the Lispm microcode, such arrays are probably not image data
anyway.
<P>Also, the Lispm code for saving bitmaps has a bug, in that if you
are writing a bitmap which is not mod32 across, the file may be up to
7 bits too short! They round down instead of up, and we don't handle
this bug gracefully.
<A NAME="lbAG"> </A>
<H2>AUTHOR</H2>
<P>Copyright (C) 1991 by Jamie Zawinski and Jef Poskanzer.
<HR>
<A NAME="index"> </A><H2>Table Of Contents</H2>
<UL>
<LI><A HREF="#lbAB">NAME</A>
<LI><A HREF="#lbAC">SYNOPSIS</A>
<LI><A HREF="#lbAD">DESCRIPTION</A>
<LI><A HREF="#lbAE">SEE ALSO</A>
<LI><A HREF="#lbAF">BUGS</A>
<LI><A HREF="#lbAG">AUTHOR</A>
</UL>
</BODY>
</HTML>
|
