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

<plugin>
  <name>sndfile</name>
  <description>use libsndfile to read and write audio from and to files</description>
  <filename>../../ext/sndfile/.libs/libgstsndfile.so</filename>
  <basename>libgstsndfile.so</basename>
  <version>0.10.14.1</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>sfsink</name>
      <longname>Sndfile sink</longname>
      <class>Sink/Audio</class>
      <description>Write audio streams to disk using libsndfile</description>
      <author>Andy Wingo &lt;wingo at pobox dot com&gt;</author>
      <pads>
        <caps>
          <name>sink</name>
          <direction>sink</direction>
          <presence>always</presence>
          <details>audio/x-raw-float, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int)32; audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int){ 16, 32 }, depth=(int){ 16, 32 }, signed=(boolean)true</details>
        </caps>
      </pads>
    </element>
    <element>
      <name>sfsrc</name>
      <longname>Sndfile source</longname>
      <class>Source/Audio</class>
      <description>Read audio streams from disk using libsndfile</description>
      <author>Andy Wingo &lt;wingo at pobox dot com&gt;</author>
      <pads>
        <caps>
          <name>src</name>
          <direction>source</direction>
          <presence>always</presence>
          <details>audio/x-raw-float, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int)32; audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int){ 16, 32 }, depth=(int){ 16, 32 }, signed=(boolean)true</details>
        </caps>
      </pads>
    </element>
  </elements>
</plugin>