gstreamer/docs/plugins/inspect/plugin-valve.xml

<plugin>
  <name>valve</name>
  <description>Valve</description>
  <filename>../../gst/valve/.libs/libgstvalve.so</filename>
  <basename>libgstvalve.so</basename>
  <version>0.10.13.1</version>
  <license>LGPL</license>
  <source>gst-plugins-bad</source>
  <package>GStreamer Bad Plug-ins git/prerelease</package>
  <origin>http://gstreamer.freedesktop.org</origin>
  <elements>
    <element>
      <name>valve</name>
      <longname>Valve element</longname>
      <class>Filter</class>
      <description>This element drops all packets when drop is TRUE</description>
      <author>Olivier Crete &lt;olivier.crete@collabora.co.uk&gt;</author>
      <pads>
        <caps>
          <name>sink</name>
          <direction>sink</direction>
          <presence>always</presence>
          <details>ANY</details>
        </caps>
        <caps>
          <name>src</name>
          <direction>source</direction>
          <presence>always</presence>
          <details>ANY</details>
        </caps>
      </pads>
    </element>
  </elements>
</plugin>