1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
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3 | "http://www.oasis-open.org/docbook/xml/4.4/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 libjpeg-download-http "http://www.ijg.org/files/jpegsrc.v&libjpeg-version;.tar.gz">
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8 | <!ENTITY libjpeg-download-ftp "ftp://ftp.uu.net/graphics/jpeg/jpegsrc.v&libjpeg-version;.tar.gz">
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9 | <!ENTITY libjpeg-md5sum "dbd5f3b47ed13132f04c685d608a7547">
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10 | <!ENTITY libjpeg-size "599 KB">
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11 | <!ENTITY libjpeg-buildsize "4.6 MB">
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12 | <!ENTITY libjpeg-time "0.15 SBU">
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13 | ]>
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14 |
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15 | <sect1 id="libjpeg" xreflabel="libjpeg-&libjpeg-version;">
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16 | <sect1info>
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17 | <othername>$LastChangedBy$</othername>
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18 | <date>$Date$</date>
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19 | </sect1info>
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20 | <?dbhtml filename="libjpeg.html"?>
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21 | <title>libjpeg-&libjpeg-version;</title>
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22 | <indexterm zone="libjpeg">
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23 | <primary sortas="a-Libjpeg">Libjpeg</primary></indexterm>
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24 |
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25 | <sect2>
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26 | <title>Introduction to <application>libjpeg</application></title>
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27 |
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28 | <para>The <application>libjpeg</application> package contains libraries
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29 | that allow compression of image files based on the Joint Photographic Experts
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30 | Group standard. It is a "lossy" compression algorithm.</para>
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31 |
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32 | <sect3><title>Package information</title>
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33 | <itemizedlist spacing='compact'>
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34 | <listitem><para>Download (HTTP):
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35 | <ulink url="&libjpeg-download-http;"/></para></listitem>
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36 | <listitem><para>Download (FTP):
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37 | <ulink url="&libjpeg-download-ftp;"/></para></listitem>
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38 | <listitem><para>Download MD5 sum: &libjpeg-md5sum;</para></listitem>
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39 | <listitem><para>Download size: &libjpeg-size;</para></listitem>
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40 | <listitem><para>Estimated disk space required:
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41 | &libjpeg-buildsize;</para></listitem>
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42 | <listitem><para>Estimated build time:
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43 | &libjpeg-time;</para></listitem></itemizedlist>
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44 | </sect3>
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45 |
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46 | </sect2>
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47 |
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48 | <sect2>
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49 | <title>Installation of <application>libjpeg</application></title>
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50 |
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51 | <para>Install <application>libjpeg</application> by running the following
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52 | commands:</para>
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53 |
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54 | <screen><userinput><command>./configure --prefix=/usr --enable-static --enable-shared &&
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55 | make</command></userinput></screen>
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56 |
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57 | <para>To test the results, issue: <command>make test</command>.</para>
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58 |
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59 | <para>Now, as the root user:</para>
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60 |
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61 | <screen><userinput role='root'><command>make install</command></userinput></screen>
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62 |
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63 | </sect2>
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64 |
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65 | <sect2>
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66 | <title>Command explanations</title>
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67 |
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68 | <para><parameter>--enable-static --enable-shared</parameter>: These switches
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69 | tell <application>libjpeg</application> to build both shared and static
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70 | libraries.</para>
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71 |
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72 | </sect2>
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73 |
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74 | <sect2>
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75 | <title>Configuring <application>libjpeg</application></title>
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76 |
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77 | <sect3><title>Configuration Information</title>
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78 |
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79 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="../../lib-config.xml"/>
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80 |
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81 | </sect3>
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82 |
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83 | </sect2>
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84 |
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85 | <sect2>
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86 | <title>Contents</title>
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87 |
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88 | <segmentedlist>
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89 | <segtitle>Installed Programs</segtitle>
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90 | <segtitle>Installed Library</segtitle>
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91 | <segtitle>Installed Directories</segtitle>
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92 |
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93 | <seglistitem>
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94 | <seg>cjpeg, djpeg, jpegtran, rdjpgcom and wrjpgcom</seg>
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95 | <seg>libjpeg.[so,a]</seg>
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96 | <seg>None</seg>
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97 | </seglistitem>
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98 | </segmentedlist>
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99 |
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100 | <variablelist>
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101 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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102 | <?dbfo list-presentation="list"?>
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103 |
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104 | <varlistentry id="cjpeg">
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105 | <term><command>cjpeg</command></term>
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106 | <listitem><para>compresses image files to produce a
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107 | <acronym>JPEG</acronym>/<acronym>JFIF</acronym> file on the standard
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108 | output. Currently supported input file formats are:
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109 | <acronym>PPM</acronym> (PBMPLUS color format), <acronym>PGM</acronym>
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110 | (PBMPLUS gray-scale format), <acronym>BMP</acronym>, and Targa.</para>
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111 | <indexterm zone="libjpeg cjpeg">
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112 | <primary sortas="b-cjpeg">cjpeg</primary>
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113 | </indexterm></listitem>
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114 | </varlistentry>
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115 |
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116 | <varlistentry id="djpeg">
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117 | <term><command>djpeg</command></term>
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118 | <listitem><para>decompresses image files from
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119 | <acronym>JPEG</acronym>/<acronym>JFIF</acronym> format to either
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120 | <acronym>PPM</acronym> (PBMPLUS color format), <acronym>PGM</acronym>
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121 | (PBMPLUS gray-scale format), <acronym>BMP</acronym>, or Targa
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122 | format.</para>
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123 | <indexterm zone="libjpeg djpeg">
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124 | <primary sortas="b-djpeg">djpeg</primary>
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125 | </indexterm></listitem>
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126 | </varlistentry>
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127 |
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128 | <varlistentry id="jpegtran">
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129 | <term><command>jpegtran</command></term>
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130 | <listitem><para>is used for lossless transformation of
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131 | <acronym>JPEG</acronym> files.</para>
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132 | <indexterm zone="libjpeg jpegtran">
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133 | <primary sortas="b-jpegtran">jpegtran</primary>
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134 | </indexterm></listitem>
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135 | </varlistentry>
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136 |
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137 | <varlistentry id="rdjpgcom">
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138 | <term><command>rdjpgcom</command></term>
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139 | <listitem><para>displays text comments from within a <acronym>JPEG</acronym>
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140 | file.</para>
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141 | <indexterm zone="libjpeg rdjpgcom">
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142 | <primary sortas="b-rdjpgcom">rdjpgcom</primary>
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143 | </indexterm></listitem>
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144 | </varlistentry>
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145 |
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146 | <varlistentry id="wrjpgcom">
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147 | <term><command>wrjpgcom</command></term>
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148 | <listitem><para>inserts text comments into a <acronym>JPEG</acronym>
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149 | file.</para>
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150 | <indexterm zone="libjpeg wrjpgcom">
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151 | <primary sortas="b-wrjpgcom">wrjpgcom</primary>
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152 | </indexterm></listitem>
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153 | </varlistentry>
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154 |
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155 | <varlistentry id="libjpeg-lib">
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156 | <term><filename class='libraryfile'>libjpeg.[so,a]</filename></term>
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157 | <listitem><para>library is used by many programs for reading and writing
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158 | <acronym>JPEG</acronym> format files.</para>
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159 | <indexterm zone="libjpeg libjpeg-lib">
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160 | <primary sortas="c-libjpeg">libjpeg.[so,a]</primary>
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161 | </indexterm></listitem>
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162 | </varlistentry>
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163 | </variablelist>
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164 |
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165 | </sect2>
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166 |
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167 | </sect1>
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