source: multimedia/libdriv/libmpeg2.xml@ 05eb990a

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
   "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../../general.ent">
  %general-entities;

  <!ENTITY libmpeg2-download-http "https://libmpeg2.sourceforge.net/files/libmpeg2-&libmpeg2-version;.tar.gz">
  <!ENTITY libmpeg2-download-ftp  "&gentoo-ftp-repo;/libmpeg2-&libmpeg2-version;.tar.gz">
  <!ENTITY libmpeg2-md5sum        "0f92c7454e58379b4a5a378485bbd8ef">
  <!ENTITY libmpeg2-size          "513 KB">
  <!ENTITY libmpeg2-buildsize     "6 MB">
  <!ENTITY libmpeg2-time          "0.1 SBU">
]>

<sect1 id="libmpeg2" xreflabel="libmpeg2-&libmpeg2-version;">
  <?dbhtml filename="libmpeg2.html"?>


  <title>libmpeg2-&libmpeg2-version;</title>

  <indexterm zone="libmpeg2">
    <primary sortas="a-libmpeg2">libmpeg2</primary>
  </indexterm>

  <sect2 role="package">
    <title>Introduction to libmpeg2</title>

    <para>
      The <application>libmpeg2</application> package contains a library for
      decoding MPEG-2 and MPEG-1 video streams. The library is able to decode
      all MPEG streams that conform to certain restrictions: <quote>constrained
      parameters</quote> for MPEG-1, and <quote>main profile</quote> for MPEG-2.
      This is useful for programs and applications needing to decode MPEG-2 and
      MPEG-1 video streams.
    </para>

    &lfs112_checked;

    <bridgehead renderas="sect3">Package Information</bridgehead>
    <itemizedlist spacing="compact">
      <listitem>
        <para>
          Download (HTTP): <ulink url="&libmpeg2-download-http;"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Download (FTP): <ulink url="&libmpeg2-download-ftp;"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Download MD5 sum: &libmpeg2-md5sum;
        </para>
      </listitem>
      <listitem>
        <para>
          Download size: &libmpeg2-size;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated disk space required: &libmpeg2-buildsize;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated build time: &libmpeg2-time;
        </para>
      </listitem>
    </itemizedlist>

    <bridgehead renderas="sect3">libmpeg2 Dependencies</bridgehead>

    <bridgehead renderas="sect4">Optional</bridgehead>
    <para role="optional">
      <xref linkend="x-window-system"/> and
      <xref linkend="sdl"/>
    </para>

    <para condition="html" role="usernotes">User Notes:
    <ulink url="&blfs-wiki;/libmpeg2"/></para>

  </sect2>

  <sect2 role="installation">
    <title>Installation of libmpeg2</title>

    <para>
      Install <application>libmpeg2</application> by running the following
      commands:
    </para>

<screen><userinput>sed -i 's/static const/static/' libmpeg2/idct_mmx.c &amp;&amp;

./configure --prefix=/usr    \
            --enable-shared  \
            --disable-static &amp;&amp;
make</userinput></screen>

    <para>
      To test the results, issue: <command>make check</command>. To
      perform a more comprehensive regression test, see the file
      <filename>test/README</filename> in the source tree.
    </para>

    <para>
      Now, as the <systemitem class="username">root</systemitem> user:
    </para>

<screen role="root"><userinput>make install &amp;&amp;

install -v -m755 -d /usr/share/doc/libmpeg2-&libmpeg2-version; &amp;&amp;
install -v -m644 README doc/libmpeg2.txt \
                    /usr/share/doc/libmpeg2-&libmpeg2-version;</userinput></screen>

  </sect2>

  <sect2 role="commands">
    <title>Command Explanations</title>

    <para>
      <command>sed -i ...</command>: This <command>sed</command> fixes
      problems with recent GCC compilers.
    </para>

    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
      href="../../xincludes/static-libraries.xml"/>

  </sect2>

  <sect2 role="content">
    <title>Contents</title>

    <segmentedlist>
      <segtitle>Installed Programs</segtitle>
      <segtitle>Installed Libraries</segtitle>
      <segtitle>Installed Directories</segtitle>

      <seglistitem>
        <seg>corrupt_mpeg2, extract_mpeg2 and mpeg2dec</seg>
        <seg>libmpeg2.so and libmpeg2convert.so</seg>
        <seg>
          /usr/include/mpeg2dec and
          /usr/share/doc/libmpeg2-&libmpeg2-version;
        </seg>
      </seglistitem>
    </segmentedlist>

    <variablelist>
      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
      <?dbfo list-presentation="list"?>
      <?dbhtml list-presentation="table"?>

<!--
     Don't fill this one in. It's designed for a user to corrupt their own
     mpeg files, which can be used for malice.
     <varlistentry id="corrupt_mpeg2">
        <term><command>corrupt_mpeg2</command></term>
        <listitem>
          <para>

          </para>
          <indexterm zone="libmpeg2 corrupt_mpeg2">
            <primary sortas="b-corrupt_mpeg2">corrupt_mpeg2</primary>
          </indexterm>
        </listitem>
      </varlistentry>
-->
      <varlistentry id="extract_mpeg2">
        <term><command>extract_mpeg2</command></term>
        <listitem>
          <para>
            extracts MPEG video streams from a multiplexed stream
          </para>
          <indexterm zone="libmpeg2 extract_mpeg2">
            <primary sortas="b-extract_mpeg2">extract_mpeg2</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="mpeg2dec">
        <term><command>mpeg2dec</command></term>
        <listitem>
          <para>
            decodes MPEG1 and MPEG2 video streams
          </para>
          <indexterm zone="libmpeg2 mpeg2dec">
            <primary sortas="b-mpeg2dec">mpeg2dec</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libmpeg2-lib">
        <term><filename class="libraryfile">libmpeg2.so</filename></term>
        <listitem>
          <para>
            contains API functions used to decode MPEG video streams
          </para>
          <indexterm zone="libmpeg2 libmpeg2-lib">
            <primary sortas="c-libmpeg2">libmpeg2.so</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libmpeg2convert">
        <term><filename class="libraryfile">libmpeg2convert.so</filename></term>
        <listitem>
          <para>
            contains API functions used for color conversions of MPEG
            video streams
          </para>
          <indexterm zone="libmpeg2 libmpeg2convert">
            <primary sortas="c-libmpeg2convert">libmpeg2convert.so</primary>
          </indexterm>
        </listitem>
      </varlistentry>

    </variablelist>

  </sect2>

</sect1>