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 libaom-download-http "https://storage.googleapis.com/aom-releases/libaom-&libaom-version;.tar.gz">
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8 | <!ENTITY libaom-download-ftp " ">
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9 | <!ENTITY libaom-md5sum "f31b72e81dd177396e3553576f6515ef">
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10 | <!ENTITY libaom-size "5.3 MB">
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11 | <!ENTITY libaom-buildsize "104 MB (add 1.0 GB for tests)">
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12 | <!ENTITY libaom-time "1.0 SBU (with parallelism=4, add 187 SBU for tests)">
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13 | ]>
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14 |
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15 | <!-- Tests not run for version 3.6.1. -->
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16 | <!-- Tests not run for version 3.9.0. -->
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17 |
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18 | <sect1 id="libaom" xreflabel="libaom-&libaom-version;">
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19 | <?dbhtml filename="libaom.html"?>
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20 |
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21 | <title>libaom-&libaom-version;</title>
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22 |
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23 | <indexterm zone="libaom">
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24 | <primary sortas="a-libaom">libaom</primary>
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25 | </indexterm>
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26 |
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27 | <sect2 role="package">
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28 | <title>Introduction to libaom</title>
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29 |
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30 | <para>
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31 | The <application>libaom</application> package contains a reference
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32 | version of the Alliance for Open Media video codec. This codec is a
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33 | patent free alternative to H.265, and is starting to be used throughout
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34 | the internet.
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35 | </para>
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36 |
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37 | &lfs122_checked;
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38 |
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39 | <bridgehead renderas="sect3">Package Information</bridgehead>
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40 | <itemizedlist spacing="compact">
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41 | <listitem>
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42 | <para>
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43 | Download (HTTP): <ulink url="&libaom-download-http;"/>
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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 (FTP): <ulink url="&libaom-download-ftp;"/>
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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 | Download MD5 sum: &libaom-md5sum;
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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 | Download size: &libaom-size;
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59 | </para>
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60 | </listitem>
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61 | <listitem>
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62 | <para>
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63 | Estimated disk space required: &libaom-buildsize;
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64 | </para>
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65 | </listitem>
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66 | <listitem>
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67 | <para>
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68 | Estimated build time: &libaom-time;
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69 | </para>
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70 | </listitem>
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71 | </itemizedlist>
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72 |
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73 | <bridgehead renderas="sect3">libaom Dependencies</bridgehead>
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74 |
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75 | <bridgehead renderas="sect4">Recommended</bridgehead>
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76 | <para role="recommended">
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77 | <xref linkend="yasm"/>
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78 | (or <xref role='nodep' linkend="nasm"/>)
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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="doxygen"/>
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84 | </para>
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85 |
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86 | &test-use-internet;
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87 |
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88 | </sect2>
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89 |
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90 | <sect2 role="installation">
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91 | <title>Installation of libaom</title>
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92 |
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93 | <para>
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94 | Install <application>libaom</application> by running the following
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95 | commands:
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96 | </para>
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97 |
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98 | <screen><userinput>mkdir aom-build &&
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99 | cd aom-build &&
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100 |
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101 | cmake -D CMAKE_INSTALL_PREFIX=/usr \
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102 | -D CMAKE_BUILD_TYPE=Release \
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103 | -D BUILD_SHARED_LIBS=1 \
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104 | -D ENABLE_DOCS=no \
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105 | -G Ninja .. &&
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106 | ninja</userinput></screen>
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107 |
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108 | <para>
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109 | To test the results, issue: <command>ninja runtests</command>. Note that
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110 | the tests take an extremely long time to run.
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111 | </para>
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112 |
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113 | <para>
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114 | Now, as the <systemitem class="username">root</systemitem> user:
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115 | </para>
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116 |
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117 | <screen role="root"><userinput>ninja install &&
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118 | rm -v /usr/lib/libaom.a</userinput></screen>
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119 |
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120 | </sect2>
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121 |
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122 | <sect2 role="commands">
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123 | <title>Command Explanations</title>
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124 |
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125 | <para>
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126 | <parameter>-D BUILD_SHARED_LIBS=1</parameter>: This switch builds shared
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127 | versions of the libraries.
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128 | </para>
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129 |
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130 | <para>
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131 | <parameter>-D ENABLE_DOCS=no</parameter>: This switch disables building
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132 | the documentation because it fails due to an incompatibility with the
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133 | latest version of <xref role="nodep" linkend="doxygen"/>.
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134 | </para>
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135 |
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136 | <para>
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137 | <option>-D ENABLE_NASM=yes</option>: Use this switch if you have both
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138 | <xref linkend="yasm"/> and
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139 | <xref role="nodep" linkend="nasm"/> installed and wish to use
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140 | nasm instead of yasm.
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141 | </para>
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142 | </sect2>
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143 |
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144 | <sect2 role="content">
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145 | <title>Contents</title>
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146 |
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147 | <segmentedlist>
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148 | <segtitle>Installed Programs</segtitle>
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149 | <segtitle>Installed Libraries</segtitle>
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150 | <segtitle>Installed Directories</segtitle>
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151 |
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152 | <seglistitem>
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153 | <seg>
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154 | None
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155 | </seg>
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156 | <seg>
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157 | libaom.so
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158 | </seg>
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159 | <seg>
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160 | /usr/include/aom
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161 | </seg>
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162 | </seglistitem>
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163 | </segmentedlist>
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164 |
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165 | <variablelist>
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166 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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167 | <?dbfo list-presentation="list"?>
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168 | <?dbhtml list-presentation="table"?>
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169 |
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170 | <varlistentry id="libaom-lib">
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171 | <term><filename class="libraryfile">libaom.so</filename></term>
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172 | <listitem>
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173 | <para>
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174 | contains functions that provide a reference implementation of the
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175 | AV1 codec
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176 | </para>
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177 | <indexterm zone="libaom libaom-lib">
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178 | <primary sortas="c-libaom">libaom.so</primary>
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179 | </indexterm>
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180 | </listitem>
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181 | </varlistentry>
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182 | </variablelist>
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183 | </sect2>
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184 | </sect1>
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