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

<plugin>
  <name>flite</name>
  <description>Flite speech synthesizer plugin</description>
  <filename>../../ext/flite/.libs/libgstflite.so</filename>
  <basename>libgstflite.so</basename>
  <version>1.1.2.1</version>
  <license>LGPL</license>
  <source>gst-plugins-bad</source>
  <package>GStreamer Bad Plug-ins git</package>
  <origin>Unknown package origin</origin>
  <elements>
    <element>
      <name>flitetestsrc</name>
      <longname>Flite speech test source</longname>
      <class>Source/Audio</class>
      <description>Creates audio test signals identifying channels</description>
      <author>David Schleef &lt;ds@schleef.org&gt;</author>
      <pads>
        <caps>
          <name>src</name>
          <direction>source</direction>
          <presence>always</presence>
          <details>audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)48000, channels=(int)[ 1, 8 ]</details>
        </caps>
      </pads>
    </element>
  </elements>
</plugin>