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

<plugin>
  <name>halelements</name>
  <description>elements wrapping the GStreamer/HAL audio input/output devices</description>
  <filename>../../ext/hal/.libs/libgsthalelements.so</filename>
  <basename>libgsthalelements.so</basename>
  <version>0.10.22.1</version>
  <license>LGPL</license>
  <source>gst-plugins-good</source>
  <package>GStreamer Good Plug-ins git</package>
  <origin>Unknown package origin</origin>
  <elements>
    <element>
      <name>halaudiosink</name>
      <longname>HAL audio sink</longname>
      <class>Sink/Audio</class>
      <description>Audio sink for sound device access via HAL</description>
      <author>Jürg Billeter &lt;j@bitron.ch&gt;</author>
      <pads>
        <caps>
          <name>sink</name>
          <direction>sink</direction>
          <presence>always</presence>
          <details>ANY</details>
        </caps>
      </pads>
    </element>
    <element>
      <name>halaudiosrc</name>
      <longname>HAL audio source</longname>
      <class>Source/Audio</class>
      <description>Audio source for sound device access via HAL</description>
      <author>Jürg Billeter &lt;j@bitron.ch&gt;</author>
      <pads>
        <caps>
          <name>src</name>
          <direction>source</direction>
          <presence>always</presence>
          <details>ANY</details>
        </caps>
      </pads>
    </element>
  </elements>
</plugin>