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

<plugin>
  <name>liveadder</name>
  <description>Adds multiple live discontinuous streams</description>
  <filename>../../gst/liveadder/.libs/libgstliveadder.so</filename>
  <basename>libgstliveadder.so</basename>
  <version>1.5.2</version>
  <license>LGPL</license>
  <source>gst-plugins-bad</source>
  <package>GStreamer Bad Plug-ins source release</package>
  <origin>Unknown package origin</origin>
  <elements>
    <element>
      <name>liveadder</name>
      <longname>Live Adder element</longname>
      <class>Generic/Audio</class>
      <description>Mixes live/discontinuous audio streams</description>
      <author>Olivier Crete &lt;olivier.crete@collabora.co.uk&gt;</author>
      <pads>
        <caps>
          <name>sink_%u</name>
          <direction>sink</direction>
          <presence>request</presence>
          <details>audio/x-raw, format=(string){ S8, U8, S16LE, U16LE, S32LE, U32LE, F32LE, F64LE }, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ]</details>
        </caps>
        <caps>
          <name>src</name>
          <direction>source</direction>
          <presence>always</presence>
          <details>audio/x-raw, format=(string){ S8, U8, S16LE, U16LE, S32LE, U32LE, F32LE, F64LE }, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ]</details>
        </caps>
      </pads>
    </element>
  </elements>
</plugin>