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

<plugin>
  <name>adpcmenc</name>
  <description>ADPCM encoder</description>
  <filename>../../gst/adpcmenc/.libs/libgstadpcmenc.so</filename>
  <basename>libgstadpcmenc.so</basename>
  <version>1.5.0.1</version>
  <license>LGPL</license>
  <source>gst-plugins-bad</source>
  <package>GStreamer Bad Plug-ins git</package>
  <origin>Unknown package origin</origin>
  <elements>
    <element>
      <name>adpcmenc</name>
      <longname>ADPCM encoder</longname>
      <class>Codec/Encoder/Audio</class>
      <description>Encode ADPCM audio</description>
      <author>Pioneers of the Inevitable &lt;songbird@songbirdnest.com&gt;</author>
      <pads>
        <caps>
          <name>sink</name>
          <direction>sink</direction>
          <presence>always</presence>
          <details>audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2 ]</details>
        </caps>
        <caps>
          <name>src</name>
          <direction>source</direction>
          <presence>always</presence>
          <details>audio/x-adpcm, layout=(string)dvi, block_align=(int)[ 64, 8192 ], rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2 ]</details>
        </caps>
      </pads>
    </element>
  </elements>
</plugin>