source: general/graphlib/libungif.xml@ d4e57f76

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Last change on this file since d4e57f76 was d4e57f76, checked in by Igor Živković <igor@…>, 18 years ago

Added giflib-4.1.3 and updated to libungif-4.1.3 and Imlib-1.9.15.

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@2853 af4574ff-66df-0310-9fd7-8a98e5e911e0

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File size: 7.5 KB
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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
3 "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6
7<!ENTITY libungif-download-http "http://prdownloads.sourceforge.net/libungif/libungif-&libungif-version;.tar.bz2">
8<!ENTITY libungif-download-ftp " ">
9<!ENTITY libungif-size "430 KB">
10<!ENTITY libungif-buildsize "5.7 MB">
11<!ENTITY libungif-time "0.11 SBU">
12
13]>
14
15<sect1 id="libungif" xreflabel="libungif-&libungif-version;">
16<sect1info>
17<othername>$LastChangedBy$</othername>
18<date>$Date$</date>
19</sect1info>
20<?dbhtml filename="libungif.html"?>
21<title>libungif-&libungif-version;</title>
22
23<sect2>
24<title>Introduction to <application>libungif</application></title>
25
26<para>The <application>libungif</application> package contains libraries for
27reading all <acronym>GIF</acronym>s and writing non-compressed ones as well as
28programs for converting and working with <acronym>GIF</acronym> files. The
29libraries are useful for any graphics program wishing to deal with
30<acronym>GIF</acronym> files while the programs are useful for conversion
31purposes as well as cleaning up images.</para>
32
33<para>The reason <application>libungif</application> only writes non-compressed
34<acronym>GIF</acronym>s is due to a legal issue with <acronym>LZW</acronym>
35compression (which Unisys claims a patent on). Reading <acronym>GIF</acronym>s
36is not a problem as the decompression routines do not seem to be limited in
37this way. Note that this has in the past been disputed. The best way to avoid
38this whole mess is to simply use <application>libungif</application> for
39looking at <acronym>GIF</acronym> images on the web, while in any pages which
40you design, use the open source <acronym>PNG</acronym> format instead (which
41uses, not surprisingly, the <application>libpng</application> library) which
42has no patent issues at all.</para>
43
44<sect3><title>Package information</title>
45<itemizedlist spacing='compact'>
46<listitem><para>Download (HTTP): <ulink url="&libungif-download-http;"/></para></listitem>
47<listitem><para>Download (FTP): <ulink url="&libungif-download-ftp;"/></para></listitem>
48<listitem><para>Download size: &libungif-size;</para></listitem>
49<listitem><para>Estimated disk space required: &libungif-buildsize;</para></listitem>
50<listitem><para>Estimated build time: &libungif-time;</para></listitem></itemizedlist>
51</sect3>
52
53<sect3><title><application>libungif</application> dependencies</title>
54<sect4><title>Optional</title>
55<para>X (<xref linkend="xfree86"/> or <xref linkend="xorg"/>)</para></sect4>
56</sect3>
57
58</sect2>
59
60<sect2>
61<title>Installation of <application>libungif</application></title>
62
63<para>Install <application>libungif</application> by running the following
64commands:</para>
65
66<screen><userinput><command>./configure --prefix=/usr &amp;&amp;
67make &amp;&amp;
68make install</command></userinput></screen>
69
70</sect2>
71
72<sect2>
73<title>Contents</title>
74
75<para>The libungif package contains
76<command>gif2epsn</command>,
77<command>gif2ps</command>,
78<command>gif2rgb</command>,
79<command>gif2x11</command>,
80<command>gifasm</command>,
81<command>gifbg</command>,
82<command>gifburst</command>,
83<command>gifclip</command>,
84<command>gifclrmp</command>,
85<command>gifcolor</command>,
86<command>gifcomb</command>,
87<command>gifcompose</command>,
88<command>giffiltr</command>,
89<command>giffix</command>,
90<command>gifflip</command>,
91<command>gifhisto</command>,
92<command>gifinfo</command>,
93<command>gifinter</command>,
94<command>gifinto</command>,
95<command>gifovly</command>,
96<command>gifpos</command>,
97<command>gifrotat</command>,
98<command>gifrsize</command>,
99<command>gifspnge</command>,
100<command>giftext</command>,
101<command>gifwedge</command>,
102<command>icon2gif</command>,
103<command>raw2gif</command>,
104<command>rgb2gif</command>,
105<command>text2gif</command> and
106<filename class="libraryfile">libungif</filename> libraries.</para>
107
108</sect2>
109
110<sect2><title>Description</title>
111
112<sect3><title>gif2epsn</title>
113<para>Dumps images saved as <acronym>GIF</acronym> files on Epson type
114printers.</para></sect3>
115
116<sect3><title>gif2ps</title>
117<para>Print <acronym>GIF</acronym> files on laser printers supporting PostScript.
118</para></sect3>
119
120<sect3><title>gif2rgb</title>
121<para>Convert images saved as <acronym>GIF</acronym> to 24-bit
122<acronym>RGB</acronym> image(s).</para></sect3>
123
124<sect3><title>gif2x11</title>
125<para>Display images saved as <acronym>GIF</acronym> files
126under X Window System.</para></sect3>
127
128<sect3><title>gifasm</title>
129<para>Assemble multiple <acronym>GIF</acronym>s into one, or burst a
130multiple-image <acronym>GIF</acronym>.</para></sect3>
131
132<sect3><title>gifbg</title>
133<para>Generate a single-color test pattern <acronym>GIF</acronym>.</para>
134</sect3>
135
136<sect3><title>gifburst</title>
137<para>Burst a <acronym>GIF</acronym> image into subrectangles.</para></sect3>
138
139<sect3><title>gifclip</title>
140<para>Clip or crop a <acronym>GIF</acronym> image.</para></sect3>
141
142<sect3><title>gifclrmp</title>
143<para>Modify <acronym>GIF</acronym> image colormaps.</para></sect3>
144
145<sect3><title>gifcolor</title>
146<para>Generate color test patterns.</para></sect3>
147
148<sect3><title>gifcomb</title>
149<para>Combine 2 <acronym>GIF</acronym> images of exactly the same size into one.
150</para></sect3>
151
152<sect3><title>gifcompose</title>
153<para>Use (un)giflib tools to compose images.</para></sect3>
154
155<sect3><title>giffiltr</title>
156<para>Template code for filtering a <acronym>GIF</acronym>
157sequentially.</para></sect3>
158
159<sect3><title>giffix</title>
160<para>Clumsily attempts to fix truncated <acronym>GIF</acronym> images.</para>
161</sect3>
162
163<sect3><title>gifflip</title>
164<para>Flip <acronym>GIF</acronym> image along X or Y axis or rotate by 90
165degrees.</para></sect3>
166
167<sect3><title>gifhisto</title>
168<para>Generate color-frequency histogram from a <acronym>GIF</acronym>.</para>
169</sect3>
170
171<sect3><title>gifinfo</title>
172<para>Gives information on a <acronym>GIF</acronym> file.</para></sect3>
173
174<sect3><title>gifinter</title>
175<para>Convert between interlaced and non-interlaced images.</para></sect3>
176
177<sect3><title>gifinto</title>
178<para>End-of-pipe fitting for <acronym>GIF</acronym>-processing
179pipelines.</para></sect3>
180
181<sect3><title>gifovly</title>
182<para>Generate one composite <acronym>GIF</acronym> from a multiple-image
183<acronym>GIF</acronym>.</para></sect3>
184
185<sect3><title>gifpos</title>
186<para>Change a <acronym>GIF</acronym>'s screen size or recondition
187it.</para></sect3>
188
189<sect3><title>gifrotat</title>
190<para>Rotate a <acronym>GIF</acronym> through any desired angle.</para></sect3>
191
192<sect3><title>gifrsize</title>
193<para>Resize a <acronym>GIF</acronym> by deletion or duplication of bits.</para>
194</sect3>
195
196<sect3><title>gifspnge</title>
197<para>Template code for filtering a <acronym>GIF</acronym> with in-core
198operations.</para></sect3>
199
200<sect3><title>giftext</title>
201<para>Print (text only) general information about a <acronym>GIF</acronym>.
202</para></sect3>
203
204<sect3><title>gifwedge</title>
205<para>Create a test <acronym>GIF</acronym> image resembling a color monitor
206test pattern.</para></sect3>
207
208<sect3><title>icon2gif</title>
209<para>Converter/deconverter to/from an editable text format.</para></sect3>
210
211<sect3><title>raw2gif</title>
212<para>Convert raw 8-bit image data into <acronym>GIF</acronym> files.</para>
213</sect3>
214
215<sect3><title>rgb2gif</title>
216<para>Convert 24 bit images to a <acronym>GIF</acronym> image using color
217quantization.</para></sect3>
218
219<sect3><title>text2gif</title>
220<para>Generate <acronym>GIF</acronym> images out of regular text in 8x8 font.
221</para></sect3>
222
223</sect2>
224
225</sect1>
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