1Infotopam User Manual(0) Infotopam User Manual(0)
2
6 infotopam - convert Amiga .info icons to PAM
7
10 infotopam [-forcecolor] [-numcolors numcolors] [-selected] [index color
11 ...] [filename]
12 Minimum unique abbreviation of option is acceptable. You may use dou‐
14 ble hyphens instead of single hyphen to denote options. You may use
15 white space in place of the equals sign to separate an option name from
16 its value.
17
20 By default, infotopam converts the first icon in a .info file:
21 infotopam amiga.info > amiga.first.pam
23 Use the -selected option to convert the second icon in a .info file.
25 Here infotopam reads from Standard Input:
26 infotopam -selected < amiga.info > amiga.second.pam
28 Use the -forcecolor option to force color conversion for a 1 bit-plane
30 .info file:
31 infotopam -forcecolor bw.info > bw.pam
33 Use -numcolors to override colors for indexes 0 and 3. Notice the two
35 ways to specify the color:
36 infotopam -numcolors 2 0 green 3 #FF0000 icon.info > icon.pam
38 Since Amiga monitors do not use square pixels, some icons may appear
40 squished. Filtering the output through pamscale can fix this:
41 infotopam squish.info | pamtopnm | pamscale -yscale 1.7 > normal.pnm
43
46 This program is part of Netpbm(1).
47 infotopam converts an Amiga .info (icon) file to a PAM image. info‐
49 topam reads a .info file from filename, or from Standard Input if you
50 do not specify a file name, and writes the converted PAM image to Stan‐
51 dard Output.
52 infotopam currently handles 1 and 2 bit-plane icons. If the .info icon
54 only has 1 bit-plane, infotopam generates a bitmap (black&white) PAM
55 image; otherwise it generates a color PAM image. You can force info‐
56 topam to convert 1 bit-plane images to color PAM images by using the
57 -forcecolor option.
58
61 In addition to the options common to all programs based on libnetpbm
62 (most notably -quiet, see
63 Common Options ⟨index.html#commonoptions⟩ ), infotopam recognizes the
64 following command line options:
65 -forcecolor
69 Forces infotopam to convert 1 bit-plane icons to color PAM
73 images instead of bitmap PAM images. infotopam uses the index
74 2
75 color for black and the index 1 color for white (more on this
76 below).
77 -numcolors numcolors
80 Tells infotopam how many colors to override. Pixels in the
84 Amiga .info files are assigned an index value rather than a
85 specific color.
86 The standard colors for a 2 bit-plane icon are:
87 Index 0: Blue (00, 55, AA)
89 Index 1: White (FF, FF, FF)
90 Index 2: Black (00, 00, 20)
91 Index 3: Orange (FF, 8A, 00)
92 To override the colors, first specify how many colors to over‐
94 ride using
95 -numcolors, then specify an (index color) pair for each color
96 you want to override, where index is a value from 0 to 3 and
97 color the new color for that index. Specify color as
98 described for the pnm_parsecolor() argument
99 ⟨libnetpbm_image.html#colorname⟩ .
100 -selected
103 Tells infotopam to convert the selected (second) icon instead of
106 the normal (first) icon. Each Amiga .info icon file contains
107 two icon
108 images. The first image is the normal, unselected icon, and
109 the second
110 image is the selected icon. By default infotopam converts the
111 first
112 icon. You can tell infotopam to convert the second icon by
113 using the
114 -selected option.
115 All options can be abbreviated to their shortest unique prefix.
119
122 pam(1) pamtopnm(1) pamscale(1)
123
127 Thanks to the following people on comp.sys.amiga.programmer for tips
128 and pointers on decoding the info file format:
129 · Ben Hutchings
133 · Thomas Richter
135 · Kjetil Svalastog Matheussen
137 · Anders Melchiorsen
139 · Dirk Stoecker
141 · Ronald V.D.
143 The format of the Amiga .info file is as follows:
146 DiskObject header 78 bytes
148 Optional DrawerData header 56 bytes
149 First icon header 20 bytes
150 First icon data Varies
151 Second icon header 20 bytes
152 Second icon data Varies
153 The DiskObject header contains, among other things, the magic number
155 (0xE310), the object width and height (inside the embedded Gadget
156 header), and the version.
157 Each icon header contains the icon width and height, which can be
159 smaller than the object width and height, and the number of bit-planes.
160 The icon data has the following format:
162 BIT-PLANE planes, each with HEIGHT rows of (WIDTH
166 +15) / 16 * 2 bytes length.
167 So if you have a 9x3x2 icon, the icon data will look like this:
169 aaaa aaaa a000 0000
171 aaaa aaaa a000 0000
172 aaaa aaaa a000 0000
173 bbbb bbbb b000 0000
174 bbbb bbbb b000 0000
175 bbbb bbbb b000 0000
176 where a is a bit for the first bit-plane, b is a bit for the second
178 bit-plane, and 0 is padding. Thanks again to Ben Hutchings for his
179 very helpful post!
180
183 infotopam was new in Netpbm 10.22 (April 2004).
184
187 infotopam currently only handles 1 and 2 bit-plane icons.
188 There is no pamtoinfo command, since the .info files contain a lot more
190 than just icon data, and mapping the colors would be difficult.
191
194 Copyright (C) 2000, 2004 by Richard Griswold.
195
197 This manual page was generated by the Netpbm tool 'makeman' from HTML
198 source. The master documentation is at
199 http://netpbm.sourceforge.net/doc/infotopam.html
201netpbm documentation 07 April 2004 Infotopam User Manual(0)