source: multimedia/libdriv/gst10-libav.xml

<?xml version="1.0" encoding="UTF-8"?>
<!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 gst10-libav-download-http "&gstreamer-dl;/gst-libav/gst-libav-&gst10-libav-version;.tar.xz">
  <!ENTITY gst10-libav-download-ftp  " ">
  <!ENTITY gst10-libav-md5sum        "1806080f07f86a67a5332b3d834a2e39">
  <!ENTITY gst10-libav-size          "200 KB">
  <!ENTITY gst10-libav-buildsize     "9.0 MB">
  <!ENTITY gst10-libav-time          "less than 0.1 SBU">
]>

<sect1 id="gst10-libav" xreflabel="gst-libav-&gst10-libav-version;">
  <?dbhtml filename="gst10-libav.html"?>


  <title>gst-libav-&gst10-libav-version;</title>

  <indexterm zone="gst10-libav">
    <primary sortas="a-gst-libav">gst-libav</primary>
  </indexterm>

  <sect2 role="package">
    <title>Introduction to GStreamer Libav</title>

    <para>
      The <application>GStreamer Libav</application> package contains
      <application>GStreamer</application> plugins for
      <application>Libav</application> (a fork of
      <application>FFmpeg</application>).
    </para>

    &lfs121_checked;

    <bridgehead renderas="sect3">Package Information</bridgehead>
    <itemizedlist spacing="compact">
      <listitem>
        <para>
          Download (HTTP): <ulink url="&gst10-libav-download-http;"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Download (FTP): <ulink url="&gst10-libav-download-ftp;"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Download MD5 sum: &gst10-libav-md5sum;
        </para>
      </listitem>
      <listitem>
        <para>
          Download size: &gst10-libav-size;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated disk space required: &gst10-libav-buildsize;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated build time: &gst10-libav-time;
        </para>
      </listitem>
    </itemizedlist>

    <bridgehead renderas="sect3">GStreamer Libav Dependencies</bridgehead>

    <bridgehead renderas="sect4">Required</bridgehead>
    <para role="required">
      <xref linkend="ffmpeg"/> and
      <xref linkend="gst10-plugins-base"/>
    </para>

    <bridgehead renderas="sect4">Recommended</bridgehead>
    <para role="recommended">
      <xref linkend="yasm"/>
    </para>

    <bridgehead renderas="sect4">Optional</bridgehead>
    <para role="optional">
      <ulink url="https://pypi.org/project/hotdoc/">hotdoc</ulink>
    </para>

  </sect2>

  <sect2 role="installation">
    <title>Installation of GStreamer Libav</title>

    <para>
      Remove/Check for a series of deprecated API's by running the following
      commands:
    </para>

<screen><userinput>sed -i '444a#if LIBAVUTIL_VERSION_MAJOR &lt; 59' ext/libav/gstavcfg.c &amp;&amp;
sed -i '446a#endif' ext/libav/gstavcfg.c &amp;&amp;
sed -i '/ID_R210/d' ext/libav/gstavviddec.c &amp;&amp;
sed -i 's/ID_V410\ ||/ID_V410\ ||\ in_plugin->id\ ==\ AV_CODEC_ID_R210/' ext/libav/gstavviddec.c &amp;&amp;
sed -i '/ID_R210/a#if\ LIBAVCODEC_VERSION_MAJOR\ \&lt;\ 61' ext/libav/gstavviddec.c &amp;&amp;
sed -i '/ID_AYUV/a#endif' ext/libav/gstavviddec.c &amp;&amp;
sed -i '/ID_R210/d' ext/libav/gstavvidenc.c &amp;&amp;
sed -i 's/ID_V410\ ||/ID_V410\ ||\ in_plugin->id\ ==\ AV_CODEC_ID_R210/' ext/libav/gstavvidenc.c &amp;&amp;
sed -i '/ID_R210/a#if\ LIBAVCODEC_VERSION_MAJOR\ \&lt;\ 61' ext/libav/gstavvidenc.c &amp;&amp;
sed -i '/ID_AYUV/a#endif' ext/libav/gstavvidenc.c &amp;&amp;
sed -i ext/libav/gstavdemux.c -e '1375,1430d' \
            -e '2058d' \
            -e '2105,2140d' \
            -e '2217,2221d' &amp;&amp;
sed -i '2122aif (!gst_element_register (plugin, type_name, rank, type)) {' ext/libav/gstavdemux.c</userinput></screen>


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

<screen><userinput>mkdir build &amp;&amp;
cd    build &amp;&amp;

meson setup ..            \
      --prefix=/usr       \
      --buildtype=release &amp;&amp;
ninja</userinput></screen>


    <para>
      To run the tests, issue: <command>ninja test</command>.
    </para>

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

<screen role="root"><userinput>ninja install</userinput></screen>
  </sect2>

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

    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
      href="../../xincludes/meson-buildtype-release.xml"/>
  </sect2>

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

    <segmentedlist>
      <segtitle>Installed Programs</segtitle>
      <segtitle>Installed Library</segtitle>
      <segtitle>Installed Directory</segtitle>

      <seglistitem>
        <seg>
          None
        </seg>
        <seg>
          libgstlibav.so in /usr/lib/gstreamer-1.0
        </seg>
        <seg>
          None
        </seg>
      </seglistitem>
    </segmentedlist>

  </sect2>

</sect1>