1 | <?xml version="1.0" encoding="UTF-8"?>
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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 libjxl-download-http "https://github.com/libjxl/libjxl/archive/v&libjxl-version;/libjxl-&libjxl-version;.tar.gz">
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8 | <!ENTITY libjxl-md5sum "2b8433176a334480d21af02fd8bdc6fe">
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9 | <!ENTITY libjxl-size "1.8 MB">
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10 | <!ENTITY libjxl-buildsize "47 MB">
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11 | <!ENTITY libjxl-time "0.7 SBU (with parallelism=4)">
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12 |
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13 | ]>
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14 |
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15 | <sect1 id="libjxl" xreflabel="libjxl-&libjxl-version;">
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16 | <?dbhtml filename="libjxl.html"?>
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17 |
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18 | <title>libjxl-&libjxl-version;</title>
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19 |
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20 | <indexterm zone="libjxl">
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21 | <primary sortas="a-libjxl">libjxl</primary>
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22 | </indexterm>
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23 |
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24 | <sect2 role="package">
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25 | <title>Introduction to libjxl</title>
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26 |
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27 | <para>
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28 | The <application>libjxl</application> package contains the reference
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29 | implementation of the JPEG XL image format.
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30 | </para>
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31 |
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32 | &lfs122_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>
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38 | Download (HTTP): <ulink url="&libjxl-download-http;"/>
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39 | </para>
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40 | </listitem>
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41 | <listitem>
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42 | <para>
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43 | Download MD5 sum: &libjxl-md5sum;
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44 | </para>
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45 | </listitem>
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46 | <listitem>
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47 | <para>
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48 | Download size: &libjxl-size;
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49 | </para>
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50 | </listitem>
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51 | <listitem>
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52 | <para>
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53 | Estimated disk space required: &libjxl-buildsize;
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54 | </para>
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55 | </listitem>
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56 | <listitem>
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57 | <para>
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58 | Estimated build time: &libjxl-time;
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59 | </para>
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60 | </listitem>
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61 | </itemizedlist>
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62 |
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63 | <bridgehead renderas="sect3">libjxl Dependencies</bridgehead>
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64 |
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65 | <bridgehead renderas="sect4">Required</bridgehead>
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66 | <para role="required">
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67 | <xref linkend="brotli"/>,
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68 | <xref linkend="cmake"/>,
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69 | <xref linkend="giflib"/>,
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70 | <xref linkend="highway"/>,
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71 | <xref linkend="lcms2"/>,
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72 | <xref linkend="libjpeg"/>, and
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73 | <xref linkend="libpng"/>
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74 | </para>
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75 |
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76 | <bridgehead renderas="sect4">Recommended</bridgehead>
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77 | <para role="recommended">
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78 | <xref linkend="gdk-pixbuf"/> (for the plugin)
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79 | </para>
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80 |
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81 | <bridgehead renderas="sect4">Optional</bridgehead>
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82 | <para role="optional">
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83 | <xref linkend="asciidoc"/> (for man pages),
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84 | <xref linkend="doxygen"/> and <xref linkend="graphviz"/>
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85 | (for documentation),
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86 | <!--<xref linkend="gimp"/> (for the plugin),-->
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87 | <xref linkend="java"/> (for the JAR),
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88 | <xref linkend="libavif"/>,
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89 | <xref linkend="libwebp"/>,
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90 | <ulink url="https://github.com/google/googletest">gtest</ulink>,
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91 | <ulink url="https://www.openexr.com/">OpenEXR</ulink>,
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92 | <ulink url="https://github.com/webmproject/sjpeg">sjpeg</ulink>, and
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93 | <ulink url="https://skia.googlesource.com/skcms/">skcms</ulink>
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94 | </para>
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95 |
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96 | </sect2>
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97 |
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98 | <sect2 role="installation">
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99 | <title>Installation of libjxl</title>
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100 |
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101 | <para>
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102 | Install <application>libjxl</application> by running the following
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103 | commands:
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104 | </para>
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105 |
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106 | <screen><userinput>mkdir build &&
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107 | cd build &&
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108 |
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109 | cmake -D CMAKE_INSTALL_PREFIX=/usr \
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110 | -D CMAKE_BUILD_TYPE=Release \
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111 | -D BUILD_TESTING=OFF \
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112 | -D BUILD_SHARED_LIBS=ON \
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113 | -D JPEGXL_ENABLE_SKCMS=OFF \
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114 | -D JPEGXL_ENABLE_SJPEG=OFF \
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115 | -D JPEGXL_ENABLE_PLUGINS=ON \
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116 | -D JPEGXL_INSTALL_JARDIR=/usr/share/java \
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117 | -G Ninja .. &&
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118 | ninja</userinput></screen>
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119 |
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120 | <para>
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121 | This package does come with a test suite, but it requires
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122 | <ulink url="https://github.com/google/googletest">gtest</ulink>, which
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123 | is not in BLFS.
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124 | </para>
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125 |
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126 | <para>
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127 | Now, as the &root; user:
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128 | </para>
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129 |
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130 | <screen role="root"><userinput>ninja install &&
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131 | gdk-pixbuf-query-loaders --update-cache</userinput></screen>
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132 |
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133 | </sect2>
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134 |
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135 | <sect2 role="commands">
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136 | <title>Command Explanations</title>
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137 |
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138 | <para>
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139 | <command>gdk-pixbuf-query-loaders --update-cache</command>: This command
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140 | regenerates the <application>GDK Pixbuf</application> loader cache so
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141 | that it is aware of the JPEG-XL loader.
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142 | </para>
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143 |
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144 | <para>
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145 | <parameter>-D BUILD_TESTING=OFF</parameter>: This parameter disables the
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146 | tests because they require
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147 | <ulink url="https://github.com/google/googletest">gtest</ulink>, which
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148 | is not in BLFS. If you wish to run the tests and have
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149 | <ulink url="https://github.com/google/googletest">gtest</ulink> installed,
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150 | remove this parameter.
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151 | </para>
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152 |
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153 | <para>
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154 | <parameter>-D BUILD_SHARED_LIBS=ON</parameter>: This parameter enables
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155 | building shared versions of the libraries instead of static ones.
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156 | </para>
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157 |
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158 | <para>
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159 | <parameter>-D JPEGXL_ENABLE_SKCMS=OFF</parameter>: This parameter disables
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160 | building support for Skia's <application>skcms</application> since it is
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161 | not necessary for BLFS purposes and requires
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162 | <ulink url="https://skia.googlesource.com/skcms/">skcms</ulink>.
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163 | </para>
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164 |
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165 | <para>
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166 | <parameter>-D JPEGXL_ENABLE_SJPEG=OFF</parameter>: This parameter disables
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167 | support for SimpleJPEG since it is not necessary for BLFS purposes and
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168 | requires <ulink url="https://github.com/webmproject/sjpeg">sjpeg</ulink>.
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169 | </para>
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170 |
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171 | <para>
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172 | <parameter>-D JPEGXL_ENABLE_PLUGINS=ON</parameter>: This parameter enables
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173 | Plugin support, which creates plugins for <!--<xref linkend="gimp"/> and-->
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174 | <xref linkend="gdk-pixbuf"/> if the package is installed.
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175 | </para>
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176 |
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177 | <para>
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178 | <parameter>-D JPEGXL_INSTALL_JARDIR=/usr/share/java</parameter>: This
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179 | parameter places the JAR file for JPEG XL support in the correct
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180 | directory if <xref linkend="java"/> is installed.
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181 | </para>
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182 |
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183 | </sect2>
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184 |
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185 | <sect2 role="content">
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186 | <title>Contents</title>
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187 |
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188 | <segmentedlist>
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189 | <segtitle>Installed Programs</segtitle>
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190 | <segtitle>Installed Libraries</segtitle>
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191 | <segtitle>Installed Directories</segtitle>
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192 |
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193 | <seglistitem>
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194 | <seg>
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195 | benchmark_xl,
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196 | cjxl,
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197 | djxl, and
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198 | jxlinfo
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199 | </seg>
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200 | <seg>
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201 | libjxl.so,
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202 | libjxl_cms.so,
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203 | libjxl_extras_codec.so,
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204 | libjxl_jni.so,
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205 | libjxl_threads.so, and
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206 | libpixbufloader-jxl.so (in /usr/lib/gdk-pixbuf-2.0/2.10.0/loaders)
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207 | </seg>
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208 | <seg>
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209 | /usr/include/jxl
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210 | </seg>
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211 | </seglistitem>
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212 | </segmentedlist>
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213 |
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214 | <variablelist>
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215 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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216 | <?dbfo list-presentation="list"?>
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217 | <?dbhtml list-presentation="table"?>
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218 |
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219 | <varlistentry id="benchmark_xl">
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220 | <term><command>benchmark_xl</command></term>
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221 | <listitem>
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222 | <para>
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223 | runs performance benchmarks against libjxl
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224 | </para>
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225 | <indexterm zone="libjxl benchmark_xl">
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226 | <primary sortas="b-benchmark_xl">benchmark_xl</primary>
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227 | </indexterm>
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228 | </listitem>
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229 | </varlistentry>
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230 |
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231 | <varlistentry id="cjxl">
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232 | <term><command>cjxl</command></term>
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233 | <listitem>
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234 | <para>
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235 | compresses images into JPEG XL format
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236 | </para>
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237 | <indexterm zone="libjxl cjxl">
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238 | <primary sortas="b-cjxl">cjxl</primary>
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239 | </indexterm>
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240 | </listitem>
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241 | </varlistentry>
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242 |
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243 | <varlistentry id="djxl">
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244 | <term><command>djxl</command></term>
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245 | <listitem>
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246 | <para>
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247 | decompresses images from JPEG XL format into other formats
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248 | </para>
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249 | <indexterm zone="libjxl djxl">
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250 | <primary sortas="b-djxl">djxl</primary>
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251 | </indexterm>
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252 | </listitem>
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253 | </varlistentry>
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254 |
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255 | <varlistentry id="jxlinfo">
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256 | <term><command>jxlinfo</command></term>
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257 | <listitem>
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258 | <para>
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259 | displays information about JPEG XL images
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260 | </para>
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261 | <indexterm zone="libjxl jxlinfo">
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262 | <primary sortas="b-jxlinfo">jxlinfo</primary>
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263 | </indexterm>
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264 | </listitem>
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265 | </varlistentry>
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266 |
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267 | <varlistentry id="libjxl-lib">
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268 | <term><filename class="libraryfile">libjxl.so</filename></term>
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269 | <listitem>
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270 | <para>
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271 | contains the reference implementation of the JPEG XL standard
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272 | </para>
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273 | <indexterm zone="libjxl libjxl-lib">
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274 | <primary sortas="c-libjxl">libjxl.so</primary>
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275 | </indexterm>
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276 | </listitem>
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277 | </varlistentry>
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278 |
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279 | <varlistentry id="libjxl_cms">
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280 | <term><filename class="libraryfile">libjxl_cms.so</filename></term>
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281 | <listitem>
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282 | <para>
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283 | contains support for Little CMS in libjxl
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284 | </para>
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285 | <indexterm zone="libjxl libjxl_cms">
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286 | <primary sortas="c-libjxl_cms">libjxl_cms.so</primary>
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287 | </indexterm>
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288 | </listitem>
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289 | </varlistentry>
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290 |
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291 | <varlistentry id="libjxl_extras_codec">
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292 | <term><filename class="libraryfile">libjxl_extras_codec.so</filename></term>
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293 | <listitem>
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294 | <para>
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295 | contains additional codec support for JPEG XL images
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296 | </para>
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297 | <indexterm zone="libjxl libjxl_extras_codec">
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298 | <primary sortas="c-libjxl_extras_codec">libjxl_extras_codec.so</primary>
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299 | </indexterm>
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300 | </listitem>
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301 | </varlistentry>
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302 |
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303 | <varlistentry id="libjxl_jni">
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304 | <term><filename class="libraryfile">libjxl_jni.so</filename></term>
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305 | <listitem>
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306 | <para>
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307 | contains a Java interface to support JPEG XL on systems where
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308 | <xref linkend="java"/> was installed at build time
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309 | </para>
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310 | <indexterm zone="libjxl libjxl_jni">
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311 | <primary sortas="c-libjxl_jni">libjxl_jni.so</primary>
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312 | </indexterm>
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313 | </listitem>
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314 | </varlistentry>
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315 |
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316 | <varlistentry id="libjxl_threads">
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317 | <term><filename class="libraryfile">libjxl_threads.so</filename></term>
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318 | <listitem>
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319 | <para>
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320 | contains threading functions for JPEG XL
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321 | </para>
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322 | <indexterm zone="libjxl libjxl_threads">
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323 | <primary sortas="c-libjxl_threads">libjxl_threads.so</primary>
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324 | </indexterm>
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325 | </listitem>
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326 | </varlistentry>
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327 |
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328 | <varlistentry id="libpixbufloader-jxl">
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329 | <term><filename class="libraryfile">libpixbufloader-jxl.so</filename></term>
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330 | <listitem>
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331 | <para>
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332 | contains a loader for gdk-pixbuf to allow it to load JPEG XL images
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333 | </para>
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334 | <indexterm zone="libjxl libpixbufloader-jxl">
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335 | <primary sortas="c-libpixbufloader-jxl">libpixbufloader-jxl.so</primary>
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336 | </indexterm>
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337 | </listitem>
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338 | </varlistentry>
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339 | </variablelist>
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340 | </sect2>
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341 | </sect1>
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