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git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@2592 af4574ff-66df-0310-9fd7-8a98e5e911e0
222 lines
7.9 KiB
XML
222 lines
7.9 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
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"http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../../general.ent">
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%general-entities;
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<!ENTITY libungif-download-http "http://ftp.sunfreeware.com/ftp/pub/freeware/SOURCES/libungif-&libungif-version;.tar.gz">
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<!ENTITY libungif-download-ftp "ftp://sunfreeware.secsup.org/pub/solaris/freeware/SOURCES/libungif-&libungif-version;.tar.gz">
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<!ENTITY libungif-size "343 KB">
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<!ENTITY libungif-buildsize "3.1 MB">
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<!ENTITY libungif-time "0.11 SBU">
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]>
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<sect1 id="libungif" xreflabel="libungif-&libungif-version;">
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<sect1info>
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<othername>$LastChangedBy$</othername>
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<date>$Date$</date>
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</sect1info>
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<?dbhtml filename="libungif.html"?>
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<title>libungif-&libungif-version;</title>
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<sect2>
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<title>Introduction to <application>libungif</application></title>
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<para>The <application>libungif</application> package contains libraries for
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reading all <acronym>GIF</acronym>s and writing non-compressed ones as well as
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programs for converting and working with <acronym>GIF</acronym> files. The
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libraries are useful for any graphics program wishing to deal with
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<acronym>GIF</acronym> files while the programs are useful for conversion
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purposes as well as cleaning up images.</para>
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<para>The reason <application>libungif</application> only writes non-compressed
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<acronym>GIF</acronym>s is due to a legal issue with <acronym>LZW</acronym>
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compression (which Unisys claims a patent on). Reading <acronym>GIF</acronym>s
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is not a problem as the decompression routines do not seem to be limited in
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this way. Note that this has in the past been disputed. The best way to avoid
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this whole mess is to simply use <application>libungif</application> for
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looking at <acronym>GIF</acronym> images on the web, while in any pages which
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you design, use the open source <acronym>PNG</acronym> format instead (which
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uses, not surprisingly, the <application>libpng</application> library) which
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has no patent issues at all.</para>
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<sect3><title>Package information</title>
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<itemizedlist spacing='compact'>
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<listitem><para>Download (HTTP): <ulink url="&libungif-download-http;"/></para></listitem>
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<listitem><para>Download (FTP): <ulink url="&libungif-download-ftp;"/></para></listitem>
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<listitem><para>Download size: &libungif-size;</para></listitem>
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<listitem><para>Estimated Disk space required: &libungif-buildsize;</para></listitem>
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<listitem><para>Estimated build time: &libungif-time;</para></listitem></itemizedlist>
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</sect3>
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<sect3><title>Additional downloads</title>
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<itemizedlist spacing='compact'>
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<listitem><para>Required Patch: <ulink
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url="&patch-root;/libungif-&libungif-version;-va_start-1.patch"/></para></listitem>
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</itemizedlist>
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</sect3>
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<sect3><title><application>libungif</application> dependencies</title>
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<sect4><title>Optional</title>
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<para>X (<xref linkend="xfree86"/> or <xref linkend="xorg"/>)</para></sect4>
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</sect3>
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</sect2>
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<sect2>
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<title>Installation of <application>libungif</application></title>
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<para>Install <application>libungif</application> by running the following
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commands:</para>
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<screen><userinput><command>patch -Np1 -i ../libungif-&libungif-version;-va_start-1.patch &&
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./configure --prefix=/usr &&
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make &&
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make install</command></userinput></screen>
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<!--
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<note><para>If you get an error during the make portion compiling
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<filename>lib/qprintf.c</filename>,
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edit the file and comment out or remove line 14: #include <config.h>
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</para></note>
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-->
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</sect2>
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<sect2>
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<title>Contents</title>
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<para>The libungif package contains <command>gif2epsn</command>,
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<command>gif2ps</command>, <command>gif2rgb</command>,
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<command>gifasm</command>, <command>gifbg</command>,
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<command>gifburst</command>, <command>gifclip</command>,
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<command>gifclrmp</command>, <command>gifcolor</command>,
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<command>gifcomb</command>, <command>gifcompose</command>,
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<command>giffiltr</command>, <command>giffix</command>,
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<command>gifflip</command>, <command>gifhisto</command>,
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<command>gifinfo</command>, <command>gifinter</command>,
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<command>gifinto</command>, <command>gifovly</command>,
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<command>gifpos</command>, <command>gifrotat</command>,
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<command>gifrsize</command>, <command>gifspnge</command>,
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<command>giftext</command>, <command>gifwedge</command>,
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<command>icon2gif</command>, <command>raw2gif</command>,
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<command>rgb2gif</command>, <command>text2gif</command> and
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<filename>libungif</filename> libraries.</para>
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</sect2>
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<sect2><title>Description</title>
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<sect3><title>gif2epsn</title>
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<para>Dumps images saved as <acronym>GIF</acronym> files on Epson type
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printers.</para></sect3>
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<sect3><title>gif2ps</title>
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<para>Print <acronym>GIF</acronym> files on laser printers supporting PostScript.
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</para></sect3>
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<sect3><title>gif2rgb</title>
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<para>Convert images saved as <acronym>GIF</acronym> to 24-bit
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<acronym>RGB</acronym> image(s).</para></sect3>
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<sect3><title>gifasm</title>
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<para>Assemble multiple <acronym>GIF</acronym>s into one, or burst a
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multiple-image <acronym>GIF</acronym>.</para></sect3>
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<sect3><title>gifbg</title>
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<para>Generate a single-color test pattern <acronym>GIF</acronym>.</para>
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</sect3>
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<sect3><title>gifburst</title>
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<para>Burst a <acronym>GIF</acronym> image into subrectangles.</para></sect3>
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<sect3><title>gifclip</title>
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<para>Clip or crop a <acronym>GIF</acronym> image.</para></sect3>
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<sect3><title>gifclrmp</title>
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<para>Modify <acronym>GIF</acronym> image colormaps.</para></sect3>
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<sect3><title>gifcolor</title>
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<para>Generate color test patterns.</para></sect3>
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<sect3><title>gifcomb</title>
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<para>Combine 2 <acronym>GIF</acronym> images of exactly the same size into one.
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</para></sect3>
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<sect3><title>gifcompose</title>
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<para>Use (un)giflib tools to compose images.</para></sect3>
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<sect3><title>giffiltr</title>
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<para>Template code for filtering a <acronym>GIF</acronym>
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sequentially.</para></sect3>
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<sect3><title>giffix</title>
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<para>Clumsily attempts to fix truncated <acronym>GIF</acronym> images.</para>
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</sect3>
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<sect3><title>gifflip</title>
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<para>Flip <acronym>GIF</acronym> image along X or Y axis or rotate by 90
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degrees.</para></sect3>
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<sect3><title>gifhisto</title>
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<para>Generate color-frequency histogram from a <acronym>GIF</acronym>.</para>
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</sect3>
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<sect3><title>gifinfo</title>
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<para>Gives information on a <acronym>GIF</acronym> file.</para></sect3>
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<sect3><title>gifinter</title>
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<para>Convert between interlaced and non-interlaced images.</para></sect3>
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<sect3><title>gifinto</title>
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<para>End-of-pipe fitting for <acronym>GIF</acronym>-processing
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pipelines.</para></sect3>
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<sect3><title>gifovly</title>
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<para>Generate one composite <acronym>GIF</acronym> from a multiple-image
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<acronym>GIF</acronym>.</para></sect3>
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<sect3><title>gifpos</title>
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<para>Change a <acronym>GIF</acronym>'s screen size or recondition
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it.</para></sect3>
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<sect3><title>gifrotat</title>
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<para>Rotate a <acronym>GIF</acronym> through any desired angle.</para></sect3>
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<sect3><title>gifrsize</title>
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<para>Resize a <acronym>GIF</acronym> by deletion or duplication of bits.</para>
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</sect3>
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<sect3><title>gifspnge</title>
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<para>Template code for filtering a <acronym>GIF</acronym> with in-core
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operations.</para></sect3>
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<sect3><title>giftext</title>
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<para>Print (text only) general information about a <acronym>GIF</acronym>.
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</para></sect3>
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<sect3><title>gifwedge</title>
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<para>Create a test <acronym>GIF</acronym> image resembling a color monitor
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test pattern.</para></sect3>
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<sect3><title>icon2gif</title>
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<para>Converter/deconverter to/from an editable text format.</para></sect3>
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<sect3><title>raw2gif</title>
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<para>Convert raw 8-bit image data into <acronym>GIF</acronym> files.</para>
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</sect3>
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<sect3><title>rgb2gif</title>
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<para>Convert 24 bit images to a <acronym>GIF</acronym> image using color
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quantization.</para></sect3>
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<sect3><title>text2gif</title>
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<para>Generate <acronym>GIF</acronym> images out of regular text in 8x8 font.
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</para></sect3>
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</sect2>
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</sect1>
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