Ignore:
Timestamp:
09/14/2003 08:28:20 PM (21 years ago)
Author:
Larry Lawrence <larry@…>
Branches:
10.0, 10.1, 11.0, 11.1, 11.2, 11.3, 12.0, 12.1, 6.0, 6.1, 6.2, 6.2.0, 6.2.0-rc1, 6.2.0-rc2, 6.3, 6.3-rc1, 6.3-rc2, 6.3-rc3, 7.10, 7.4, 7.5, 7.6, 7.6-blfs, 7.6-systemd, 7.7, 7.8, 7.9, 8.0, 8.1, 8.2, 8.3, 8.4, 9.0, 9.1, basic, bdubbs/svn, elogind, gnome, kde5-13430, kde5-14269, kde5-14686, kea, ken/TL2024, ken/inkscape-core-mods, ken/tuningfonts, krejzi/svn, lazarus, lxqt, nosym, perl-modules, plabs/newcss, plabs/python-mods, python3.11, qt5new, rahul/power-profiles-daemon, renodr/vulkan-addition, systemd-11177, systemd-13485, trunk, upgradedb, v5_0, v5_0-pre1, v5_1, v5_1-pre1, xry111/intltool, xry111/llvm18, xry111/soup3, xry111/test-20220226, xry111/xf86-video-removal
Children:
461626e
Parents:
b3ae387
Message:

update libungif intro

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@1073 af4574ff-66df-0310-9fd7-8a98e5e911e0

File:
1 edited

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  • general/graphlib/libungif/libungif-intro.xml

    rb3ae387 re1d7dec  
    11<sect2>
    2 <title>Introduction to libungif</title>
     2<title>Introduction to <application>libungif</application></title>
    33
    4 <screen>Download location (HTTP):       <ulink url="&libungif-download-http;"/>
    5 Download location (FTP):        <ulink url="&libungif-download-ftp;"/>
    6 Version used:                   &libungif-version;
    7 Package size:                   &libungif-size;
    8 Estimated Disk space required:  &libungif-buildsize;
    9 Estimated build time:           &libungif-time;</screen>
     4<para>The libungif package contains libraries for reading all
     5<acronym>GIF</acronym>s and writing uncompressed ones as well as programs for
     6converting and working with <acronym>GIF</acronym> files.  The libraries are
     7useful for any graphics program wishing to deal with <acronym>GIF</acronym>
     8files while the programs are useful for conversion purposes as well as cleaning
     9up images.</para>
    1010
    11 <para>The libungif package contains libraries for reading all gifs and
    12 writing uncompressed ones as well as programs for converting and working
    13 with gif files.  The libraries are useful for any graphics program
    14 wishing to deal with gif files while the programs are useful for
    15 conversion purposes as well as cleaning up images.</para>
     11<para>The reason libungif only writes uncompressed <acronym>GIF</acronym>s
     12is due to a legal issue with <acronym>LZW</acronym> compression (which Unisys
     13claims a patent on). Reading <acronym>GIF</acronym>s is not a problem as the
     14uncompression routines do not seem to be limited in this way.  Note that this
     15has in the past been disputed.  The best way to avoid this whole mess is to
     16simply use libungif for looking at <acronym>GIF</acronym> images on the web,
     17while in any pages which you design, use the open source <acronym>PNG</acronym>
     18format instead (which uses, not surprisingly, the libpng library) which has no
     19patent issues at all.</para>
    1620
    17 <para>The reason libungif only writes uncompressed gifs is due to a
    18 legal issue with LZW compression (which Unisys claims a patent on).
    19 Reading gifs is not a problem as the uncompression routines do not seem
    20 to be limited in this way.  Note that this has in the past been
    21 disputed.  The best way to avoid this whole mess is to simply use
    22 libungif for looking at gif images on the web, while in any pages which
    23 you design, use the open source png format instead (which uses, not
    24 surprisingly, the libpng library) which has no patent issues at
    25 all.</para>
     21<sect3><title>Package information</title>
     22<itemizedlist spacing='compact'>
     23<listitem><para>Download (HTTP): <ulink url="&libungif-download-http;"/></para></listitem>
     24<listitem><para>Download (FTP): <ulink url="&libungif-download-ftp;"/></para></listitem>
     25<listitem><para>Download size: &libungif-size;</para></listitem>
     26<listitem><para>Estimated Disk space required: &libungif-buildsize;</para></listitem>
     27<listitem><para>Estimated build time: &libungif-time;</para></listitem></itemizedlist>
     28</sect3>
     29
    2630
    2731</sect2>
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