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

<plugin>
  <name>wasapi</name>
  <description>Windows audio session API plugin</description>
  <filename>../../sys/wasapi/.libs/libgstwasapi.dll</filename>
  <basename>libgstwasapi.dll</basename>
  <version>1.15.0.1</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>wasapisrc</name>
      <longname>WasapiSrc</longname>
      <class>Source/Audio</class>
      <description>Stream audio from an audio capture device through WASAPI</description>
      <author>Nirbheek Chauhan &lt;nirbheek@centricular.com&gt;</author>
      <pads>
        <caps>
          <name>src</name>
          <direction>source</direction>
          <presence>always</presence>
          <details>audio/x-raw, format=(string)F32LE, layout=(string)interleaved, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ]</details>
        </caps>
      </pads>
    </element>
    <element>
      <name>wasapisink</name>
      <longname>WasapiSink</longname>
      <class>Sink/Audio</class>
      <description>Stream audio to an audio output device through WASAPI</description>
      <author>Nirbheek Chauhan &lt;nirbheek@centricular.com&gt;</author>
      <pads>
        <caps>
          <name>sink</name>
          <direction>sink</direction>
          <presence>always</presence>
          <details>audio/x-raw, format=(string)F32LE, layout=(string)interleaved, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ]</details>
        </caps>
      </pads>
    </element>
  </elements>
</plugin>