[65df2435] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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[6732c094] | 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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[48b7295] | 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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| 5 | %general-entities;
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[06a5391] | 6 |
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[dc40cb9] | 7 | <!ENTITY liba52-download-http
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| 8 | "http://liba52.sourceforge.net/files/a52dec-&liba52-version;.tar.gz">
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[48b7295] | 9 | <!ENTITY liba52-download-ftp " ">
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[06a5391] | 10 | <!ENTITY liba52-md5sum "caa9f5bc44232dc8aeea773fea56be80">
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[48b7295] | 11 | <!ENTITY liba52-size "236 KB">
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[64eb1e84] | 12 | <!ENTITY liba52-buildsize "2.5 MB">
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| 13 | <!ENTITY liba52-time "less than 0.1 SBU">
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[48b7295] | 14 | ]>
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| 15 |
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[fd680fb] | 16 | <sect1 id="liba52" xreflabel="liba52-&liba52-version;">
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[65df2435] | 17 | <?dbhtml filename="liba52.html"?>
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| 18 |
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| 19 | <sect1info>
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| 20 | <othername>$LastChangedBy$</othername>
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| 21 | <date>$Date$</date>
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| 22 | </sect1info>
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| 23 |
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| 24 | <title>Liba52-&liba52-version;</title>
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| 25 |
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| 26 | <indexterm zone="liba52">
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| 27 | <primary sortas="a-Liba52">Liba52</primary>
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| 28 | </indexterm>
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| 29 |
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| 30 | <sect2 role="package">
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| 31 | <title>Introduction to Liba52</title>
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| 32 |
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[2eeb8695] | 33 | <para>
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| 34 | <application>liba52</application> is a free library for decoding
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| 35 | ATSC A/52 (also known as AC-3) streams. The A/52 standard is used
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| 36 | in a variety of applications, including digital television and DVD.
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| 37 | </para>
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[65df2435] | 38 |
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[f33b456] | 39 | &lfs91_checked;
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[e355f3c6] | 40 |
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[65df2435] | 41 | <bridgehead renderas="sect3">Package Information</bridgehead>
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| 42 | <itemizedlist spacing="compact">
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| 43 | <listitem>
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[2eeb8695] | 44 | <para>
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| 45 | Download (HTTP): <ulink url="&liba52-download-http;"/>
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| 46 | </para>
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[65df2435] | 47 | </listitem>
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| 48 | <listitem>
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[2eeb8695] | 49 | <para>
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| 50 | Download (FTP): <ulink url="&liba52-download-ftp;"/>
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| 51 | </para>
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[65df2435] | 52 | </listitem>
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| 53 | <listitem>
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[2eeb8695] | 54 | <para>
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| 55 | Download MD5 sum: &liba52-md5sum;
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| 56 | </para>
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[65df2435] | 57 | </listitem>
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| 58 | <listitem>
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[2eeb8695] | 59 | <para>
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| 60 | Download size: &liba52-size;
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| 61 | </para>
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[65df2435] | 62 | </listitem>
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| 63 | <listitem>
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[2eeb8695] | 64 | <para>
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| 65 | Estimated disk space required: &liba52-buildsize;
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| 66 | </para>
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[65df2435] | 67 | </listitem>
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| 68 | <listitem>
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[2eeb8695] | 69 | <para>
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| 70 | Estimated build time: &liba52-time;
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| 71 | </para>
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[65df2435] | 72 | </listitem>
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| 73 | </itemizedlist>
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| 74 |
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[dc40cb9] | 75 | <bridgehead renderas="sect4">Optional</bridgehead>
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[47274444] | 76 | <para role="optional">
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| 77 | <ulink url="http://cr.yp.to/djbfft.html">djbfft</ulink>
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| 78 | </para>
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[dc40cb9] | 79 |
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[0e2aa08] | 80 | <para condition="html" role="usernotes">User Notes:
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| 81 | <ulink url="&blfs-wiki;/liba52"/></para>
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[65df2435] | 82 | </sect2>
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| 83 |
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| 84 | <sect2 role="installation">
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| 85 | <title>Installation of Liba52</title>
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| 86 |
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[2eeb8695] | 87 | <para>
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| 88 | Install <application>liba52</application> by running the
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| 89 | following commands:
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| 90 | </para>
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[65df2435] | 91 |
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[62e5e8f] | 92 | <screen><userinput>./configure --prefix=/usr \
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| 93 | --mandir=/usr/share/man \
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| 94 | --enable-shared \
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| 95 | --disable-static \
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[10030e39] | 96 | CFLAGS="-g -O2 $([ $(uname -m) = x86_64 ] && echo -fPIC)" &&
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[65df2435] | 97 | make</userinput></screen>
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| 98 |
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[2eeb8695] | 99 | <para>
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| 100 | To test the results, issue: <command>make check</command>.
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| 101 | </para>
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[4d32631] | 102 |
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[2eeb8695] | 103 | <para>
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| 104 | Now, as the <systemitem class="username">root</systemitem>
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| 105 | user:
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| 106 | </para>
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[65df2435] | 107 |
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| 108 | <screen role="root"><userinput>make install &&
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[dc40cb9] | 109 | cp liba52/a52_internal.h /usr/include/a52dec &&
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[64eb1e84] | 110 | install -v -m644 -D doc/liba52.txt \
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[65df2435] | 111 | /usr/share/doc/liba52-&liba52-version;/liba52.txt</userinput></screen>
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[dc40cb9] | 112 | </sect2>
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| 113 |
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| 114 | <sect2 role="commands">
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| 115 | <title>Command Explanations</title>
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| 116 |
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[2eeb8695] | 117 | <para>
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| 118 | <parameter>CFLAGS="-g -O2 ...</parameter>: This sets CFLAGS to -g -O2
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| 119 | (which is the default) but then on x86_64 adds -fPIC. This is needed to
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| 120 | compile <application>liba52</application> on x86_64.
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| 121 | </para>
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[65df2435] | 122 |
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[c33c599] | 123 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 124 | href="../../xincludes/static-libraries.xml"/>
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[dc40cb9] | 125 |
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[2eeb8695] | 126 | <para>
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| 127 | <command>cp liba52/a52_internal.h ...</command>: Copying this header
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| 128 | file into /usr/include/a52dec allows some other programs (such as
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| 129 | <application>xine-lib</application>) to compile and link against a system
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| 130 | installed <application>liba52</application>.
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| 131 | </para>
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[65df2435] | 132 | </sect2>
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| 133 |
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| 134 | <sect2 role="content">
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| 135 | <title>Contents</title>
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| 136 |
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| 137 | <segmentedlist>
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| 138 | <segtitle>Installed Programs</segtitle>
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| 139 | <segtitle>Installed Library</segtitle>
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| 140 | <segtitle>Installed Directories</segtitle>
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| 141 |
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| 142 | <seglistitem>
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| 143 | <seg>a52dec and extract_a52</seg>
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[dc40cb9] | 144 | <seg>liba52.so</seg>
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| 145 | <seg>/usr/include/a52dec and
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| 146 | /usr/share/doc/liba52-&liba52-version;</seg>
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[65df2435] | 147 | </seglistitem>
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| 148 | </segmentedlist>
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| 149 |
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| 150 | <variablelist>
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| 151 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 152 | <?dbfo list-presentation="list"?>
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| 153 | <?dbhtml list-presentation="table"?>
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| 154 |
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| 155 | <varlistentry id="a52dec">
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| 156 | <term><command>a52dec</command></term>
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| 157 | <listitem>
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[2eeb8695] | 158 | <para>
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| 159 | plays ATSC A/52 audio streams.
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| 160 | </para>
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[65df2435] | 161 | <indexterm zone="liba52 a52dec">
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| 162 | <primary sortas="b-a52dec">a52dec</primary>
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| 163 | </indexterm>
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| 164 | </listitem>
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| 165 | </varlistentry>
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| 166 |
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| 167 | <varlistentry id="extract_a52">
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| 168 | <term><command>extract_a52</command></term>
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| 169 | <listitem>
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[2eeb8695] | 170 | <para>
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| 171 | extracts ATSC A/52 audio from an MPEG stream.
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| 172 | </para>
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[65df2435] | 173 | <indexterm zone="liba52 extract_a52">
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| 174 | <primary sortas="b-extract_a52">extract_a52</primary>
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| 175 | </indexterm>
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| 176 | </listitem>
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| 177 | </varlistentry>
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| 178 |
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| 179 | <varlistentry id="liba52-lib">
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[dc40cb9] | 180 | <term><filename class='libraryfile'>liba52.so</filename></term>
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[65df2435] | 181 | <listitem>
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[2eeb8695] | 182 | <para>
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| 183 | provides functions for the programs dealing with ATSC A/52 streams.
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| 184 | </para>
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[65df2435] | 185 | <indexterm zone="liba52 liba52-lib">
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[dc40cb9] | 186 | <primary sortas="c-liba52">liba52.so</primary>
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[65df2435] | 187 | </indexterm>
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| 188 | </listitem>
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| 189 | </varlistentry>
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| 190 | </variablelist>
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| 191 | </sect2>
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[d98b0ca] | 192 | </sect1>
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