1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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3 | "http://www.oasis-open.org/docbook/xml/4.5/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 " ">
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9 | <!ENTITY libjpeg-md5sum "52654eb3b2e60c35731ea8fc87f1bd29">
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10 | <!ENTITY libjpeg-size "972 KB">
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11 | <!ENTITY libjpeg-buildsize "13 MB">
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12 | <!ENTITY libjpeg-time "0.3 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 | <?dbhtml filename="libjpeg.html"?>
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17 |
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18 |
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19 | <title>libjpeg-&libjpeg-version;</title>
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20 |
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21 | <indexterm zone="libjpeg">
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22 | <primary sortas="a-libjpeg">libjpeg</primary>
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23 | </indexterm>
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24 |
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25 | <sect2 role="package">
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26 | <title>Introduction to libjpeg</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 | &lfs72_checked;
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33 |
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34 | <bridgehead renderas="sect3">Package Information</bridgehead>
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35 | <itemizedlist spacing="compact">
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36 | <listitem>
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37 | <para>Download (HTTP): <ulink url="&libjpeg-download-http;"/></para>
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38 | </listitem>
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39 | <listitem>
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40 | <para>Download (FTP): <ulink url="&libjpeg-download-ftp;"/></para>
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41 | </listitem>
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42 | <listitem>
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43 | <para>Download MD5 sum: &libjpeg-md5sum;</para>
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44 | </listitem>
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45 | <listitem>
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46 | <para>Download size: &libjpeg-size;</para>
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47 | </listitem>
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48 | <listitem>
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49 | <para>Estimated disk space required: &libjpeg-buildsize;</para>
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50 | </listitem>
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51 | <listitem>
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52 | <para>Estimated build time: &libjpeg-time;</para>
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53 | </listitem>
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54 | </itemizedlist>
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55 |
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56 | <para condition="html" role="usernotes">User Notes:
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57 | <ulink url="&blfs-wiki;/libjpeg"/></para>
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58 |
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59 | </sect2>
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60 |
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61 | <sect2 role="installation">
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62 | <title>Installation of libjpeg</title>
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63 |
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64 | <para>Install <application>libjpeg</application> by running the following
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65 | commands:</para>
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66 |
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67 | <screen><userinput>./configure --prefix=/usr &&
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68 | make</userinput></screen>
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69 |
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70 | <para>To test the results, issue: <command>make test</command>.</para>
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71 |
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72 | <para>Now, as the <systemitem class="username">root</systemitem> user:</para>
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73 |
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74 | <screen role="root"><userinput>make install</userinput></screen>
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75 |
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76 | </sect2>
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77 |
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78 | <sect2 role="content">
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79 | <title>Contents</title>
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80 |
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81 | <segmentedlist>
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82 | <segtitle>Installed Programs</segtitle>
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83 | <segtitle>Installed Library</segtitle>
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84 | <segtitle>Installed Directories</segtitle>
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85 |
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86 | <seglistitem>
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87 | <seg>cjpeg, djpeg, jpegtran, rdjpgcom, and wrjpgcom</seg>
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88 | <seg>libjpeg.{so,a}</seg>
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89 | <seg>None</seg>
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90 | </seglistitem>
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91 | </segmentedlist>
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92 |
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93 | <variablelist>
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94 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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95 | <?dbfo list-presentation="list"?>
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96 | <?dbhtml list-presentation="table"?>
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97 |
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98 | <varlistentry id="cjpeg">
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99 | <term><command>cjpeg</command></term>
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100 | <listitem>
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101 | <para>compresses image files to produce a JPEG/JFIF file on the
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102 | standard output. Currently supported input file formats are: PPM
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103 | (PBMPLUS color format), PGM (PBMPLUS gray-scale format),
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104 | BMP, and Targa.</para>
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105 | <indexterm zone="libjpeg cjpeg">
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106 | <primary sortas="b-cjpeg">cjpeg</primary>
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107 | </indexterm>
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108 | </listitem>
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109 | </varlistentry>
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110 |
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111 | <varlistentry id="djpeg">
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112 | <term><command>djpeg</command></term>
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113 | <listitem>
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114 | <para>decompresses image files from JPEG/JFIF format to either
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115 | PPM (PBMPLUS color format), PGM (PBMPLUS gray-scale format),
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116 | BMP, or Targa format.</para>
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117 | <indexterm zone="libjpeg djpeg">
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118 | <primary sortas="b-djpeg">djpeg</primary>
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119 | </indexterm>
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120 | </listitem>
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121 | </varlistentry>
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122 |
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123 | <varlistentry id="jpegtran">
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124 | <term><command>jpegtran</command></term>
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125 | <listitem>
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126 | <para>is used for lossless transformation of JPEG files.</para>
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127 | <indexterm zone="libjpeg jpegtran">
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128 | <primary sortas="b-jpegtran">jpegtran</primary>
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129 | </indexterm>
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130 | </listitem>
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131 | </varlistentry>
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132 |
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133 | <varlistentry id="rdjpgcom">
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134 | <term><command>rdjpgcom</command></term>
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135 | <listitem>
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136 | <para>displays text comments from within a JPEG file.</para>
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137 | <indexterm zone="libjpeg rdjpgcom">
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138 | <primary sortas="b-rdjpgcom">rdjpgcom</primary>
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139 | </indexterm>
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140 | </listitem>
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141 | </varlistentry>
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142 |
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143 | <varlistentry id="wrjpgcom">
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144 | <term><command>wrjpgcom</command></term>
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145 | <listitem>
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146 | <para>inserts text comments into a JPEG file.</para>
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147 | <indexterm zone="libjpeg wrjpgcom">
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148 | <primary sortas="b-wrjpgcom">wrjpgcom</primary>
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149 | </indexterm>
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150 | </listitem>
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151 | </varlistentry>
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152 |
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153 | <varlistentry id="libjpeg-lib">
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154 | <term><filename class='libraryfile'>libjpeg.{so,a}</filename></term>
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155 | <listitem>
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156 | <para>library is used by many programs for reading and writing
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157 | JPEG format files.</para>
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158 | <indexterm zone="libjpeg libjpeg-lib">
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159 | <primary sortas="c-libjpeg">libjpeg.{so,a}</primary>
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160 | </indexterm>
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161 | </listitem>
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162 | </varlistentry>
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163 |
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164 | </variablelist>
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165 |
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166 | </sect2>
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167 |
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168 | </sect1>
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