1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
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3 | "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
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4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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5 | %general-entities;
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6 |
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7 | <!ENTITY libungif-download-http "http://ftp.sunfreeware.com/ftp/pub/freeware/SOURCES/libungif-&libungif-version;.tar.gz">
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8 | <!ENTITY libungif-download-ftp "ftp://sunfreeware.secsup.org/pub/solaris/freeware/SOURCES/libungif-&libungif-version;.tar.gz">
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9 | <!ENTITY libungif-size "343 KB">
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10 | <!ENTITY libungif-buildsize "3.1 MB">
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11 | <!ENTITY libungif-time "0.11 SBU">
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12 |
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13 | ]>
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14 |
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15 | <sect1 id="libungif" xreflabel="libungif-&libungif-version;">
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16 | <?dbhtml filename="libungif.html"?>
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17 | <title>libungif-&libungif-version;</title>
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18 |
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19 | <sect2>
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20 | <title>Introduction to <application>libungif</application></title>
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21 |
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22 | <para>The libungif package contains libraries for reading all
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23 | <acronym>GIF</acronym>s and writing non-compressed ones as well as programs for
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24 | converting and working with <acronym>GIF</acronym> files. The libraries are
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25 | useful for any graphics program wishing to deal with <acronym>GIF</acronym>
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26 | files while the programs are useful for conversion purposes as well as cleaning
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27 | up images.</para>
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28 |
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29 | <para>The reason libungif only writes non-compressed <acronym>GIF</acronym>s
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30 | is due to a legal issue with <acronym>LZW</acronym> compression (which Unisys
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31 | claims a patent on). Reading <acronym>GIF</acronym>s is not a problem as the
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32 | decompression routines do not seem to be limited in this way. Note that this
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33 | has in the past been disputed. The best way to avoid this whole mess is to
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34 | simply use libungif for looking at <acronym>GIF</acronym> images on the web,
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35 | while in any pages which you design, use the open source <acronym>PNG</acronym>
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36 | format instead (which uses, not surprisingly, the libpng library) which has no
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37 | patent issues at all.</para>
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38 |
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39 | <sect3><title>Package information</title>
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40 | <itemizedlist spacing='compact'>
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41 | <listitem><para>Download (HTTP): <ulink url="&libungif-download-http;"/></para></listitem>
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42 | <listitem><para>Download (FTP): <ulink url="&libungif-download-ftp;"/></para></listitem>
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43 | <listitem><para>Download size: &libungif-size;</para></listitem>
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44 | <listitem><para>Estimated Disk space required: &libungif-buildsize;</para></listitem>
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45 | <listitem><para>Estimated build time: &libungif-time;</para></listitem></itemizedlist>
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46 | </sect3>
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47 |
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48 | <sect3><title>Additional downloads</title>
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49 | <itemizedlist spacing='compact'>
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50 | <listitem><para>Required patch: <ulink
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51 | url="&patch-root;/libungif-4.1.0b1-va_start.patch"/></para></listitem>
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52 | </itemizedlist>
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53 | </sect3>
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54 |
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55 | </sect2>
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56 |
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57 | <sect2>
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58 | <title>Installation of <application>libungif</application></title>
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59 |
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60 | <para>Install <application>libungif</application> by running the following
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61 | commands:</para>
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62 |
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63 | <screen><userinput><command>patch -Np1 -i ../libungif-4.1.0b1-va_start.patch &&
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64 | ./configure --prefix=/usr &&
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65 | make &&
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66 | make install</command></userinput></screen>
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67 |
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68 | <!--
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69 | <note><para>If you get an error during the make portion compiling
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70 | <filename>lib/qprintf.c</filename>,
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71 | edit the file and comment out or remove line 14: #include <config.h>
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72 | </para></note>
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73 | -->
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74 |
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75 | </sect2>
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76 |
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77 | <sect2>
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78 | <title>Contents</title>
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79 |
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80 | <para>The libungif package contains <command>gif2epsn</command>,
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81 | <command>gif2ps</command>, <command>gif2rgb</command>,
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82 | <command>gifasm</command>, <command>gifbg</command>,
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83 | <command>gifburst</command>, <command>gifclip</command>,
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84 | <command>gifclrmp</command>, <command>gifcolor</command>,
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85 | <command>gifcomb</command>, <command>gifcompose</command>,
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86 | <command>giffiltr</command>, <command>giffix</command>,
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87 | <command>gifflip</command>, <command>gifhisto</command>,
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88 | <command>gifinfo</command>, <command>gifinter</command>,
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89 | <command>gifinto</command>, <command>gifovly</command>,
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90 | <command>gifpos</command>, <command>gifrotat</command>,
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91 | <command>gifrsize</command>, <command>gifspnge</command>,
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92 | <command>giftext</command>, <command>gifwedge</command>,
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93 | <command>icon2gif</command>, <command>raw2gif</command>,
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94 | <command>rgb2gif</command>, <command>text2gif</command> and
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95 | <filename>libungif</filename> libraries.</para>
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96 |
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97 | </sect2>
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98 |
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99 | <sect2><title>Description</title>
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100 |
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101 | <sect3><title>gif2epsn</title>
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102 | <para>Dumps images saved as <acronym>GIF</acronym> files on Epson type printers.</para></sect3>
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103 |
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104 | <sect3><title>gif2ps</title>
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105 | <para>Print <acronym>GIF</acronym> files on laser printers supporting PostScript.
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106 | </para></sect3>
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107 |
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108 | <sect3><title>gif2rgb</title>
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109 | <para>Convert images saved as <acronym>GIF</acronym> to 24-bit <acronym>RGB
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110 | </acronym> image(s).</para></sect3>
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111 |
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112 | <sect3><title>gifasm</title>
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113 | <para>Assemble multiple <acronym>GIF</acronym>s into one, or burst a
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114 | multiple-image <acronym>GIF</acronym>.</para></sect3>
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115 |
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116 | <sect3><title>gifbg</title>
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117 | <para>Generate a single-color test pattern <acronym>GIF</acronym>.</para>
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118 | </sect3>
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119 |
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120 | <sect3><title>gifburst</title>
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121 | <para>Burst a <acronym>GIF</acronym> image into subrectangles.</para></sect3>
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122 |
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123 | <sect3><title>gifclip</title>
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124 | <para>Clip or crop a <acronym>GIF</acronym> image.</para></sect3>
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125 |
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126 | <sect3><title>gifclrmp</title>
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127 | <para>Modify <acronym>GIF</acronym> image colormaps.</para></sect3>
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128 |
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129 | <sect3><title>gifcolor</title>
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130 | <para>Generate color test patterns.</para></sect3>
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131 |
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132 | <sect3><title>gifcomb</title>
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133 | <para>Combine 2 <acronym>GIF</acronym> images of exactly the same size into one.
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134 | </para></sect3>
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135 |
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136 | <sect3><title>gifcompose</title>
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137 | <para>Use (un)giflib tools to compose images.</para></sect3>
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138 |
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139 | <sect3><title>giffiltr</title>
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140 | <para>Template code for filtering a <acronym>GIF</acronym> sequentially.</para></sect3>
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141 |
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142 | <sect3><title>giffix</title>
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143 | <para>Clumsily attempts to fix truncated <acronym>GIF</acronym> images.</para>
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144 | </sect3>
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145 |
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146 | <sect3><title>gifflip</title>
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147 | <para>Flip <acronym>GIF</acronym> image along X or Y axis or rotate by 90
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148 | degrees.</para></sect3>
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149 |
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150 | <sect3><title>gifhisto</title>
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151 | <para>Generate color-frequency histogram from a <acronym>GIF</acronym>.</para>
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152 | </sect3>
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153 |
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154 | <sect3><title>gifinfo</title>
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155 | <para>Gives information on a <acronym>GIF</acronym> file.</para></sect3>
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156 |
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157 | <sect3><title>gifinter</title>
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158 | <para>Convert between interlaced and non-interlaced images.</para></sect3>
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159 |
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160 | <sect3><title>gifinto</title>
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161 | <para>End-of-pipe fitting for <acronym>GIF</acronym>-processing pipelines.</para></sect3>
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162 |
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163 | <sect3><title>gifovly</title>
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164 | <para>Generate one composite <acronym>GIF</acronym> from a multiple-image
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165 | <acronym>GIF</acronym>.</para></sect3>
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166 |
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167 | <sect3><title>gifpos</title>
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168 | <para>Change a GIF's screen size or recondition it.</para></sect3>
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169 |
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170 | <sect3><title>gifrotat</title>
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171 | <para>Rotate a <acronym>GIF</acronym> through any desired angle.</para></sect3>
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172 | <sect3><title>gifrsize</title>
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173 | <para>Resize a <acronym>GIF</acronym> by deletion or duplication of bits.</para>
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174 | </sect3>
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175 |
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176 | <sect3><title>gifspnge</title>
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177 | <para>Template code for filtering a <acronym>GIF</acronym> with in-core
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178 | operations.</para></sect3>
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179 |
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180 | <sect3><title>giftext</title>
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181 | <para>Print (text only) general information about a <acronym>GIF</acronym>.
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182 | </para></sect3>
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183 |
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184 | <sect3><title>gifwedge</title>
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185 | <para>Create a test <acronym>GIF</acronym> image resembling a color monitor
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186 | test pattern.</para></sect3>
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187 |
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188 | <sect3><title>icon2gif</title>
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189 | <para>Converter/deconverter to/from an editable text format.</para></sect3>
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190 |
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191 | <sect3><title>raw2gif</title>
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192 | <para>Convert raw 8-bit image data into <acronym>GIF</acronym> files.</para>
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193 | </sect3>
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194 |
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195 | <sect3><title>rgb2gif</title>
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196 | <para>Convert 24 bit images to a <acronym>GIF</acronym> image using color
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197 | quantization.</para></sect3>
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198 |
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199 | <sect3><title>text2gif</title>
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200 | <para>Generate <acronym>GIF</acronym> images out of regular text in 8x8 font.
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201 | </para></sect3>
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202 |
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203 | </sect2>
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204 |
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205 | </sect1>
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206 |
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