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

<plugin>
  <name>zbar</name>
  <description>zbar barcode scanner</description>
  <filename>../../ext/zbar/.libs/libgstzbar.so</filename>
  <basename>libgstzbar.so</basename>
  <version>1.1.2</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>zbar</name>
      <longname>Barcode detector</longname>
      <class>Filter/Analyzer/Video</class>
      <description>Detect bar codes in the video streams</description>
      <author>Stefan Kost &lt;ensonic@users.sf.net&gt;</author>
      <pads>
        <caps>
          <name>sink</name>
          <direction>sink</direction>
          <presence>always</presence>
          <details>video/x-raw, format=(string){ Y800, I420, YV12, NV12, NV21, Y41B, Y42B }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</details>
        </caps>
        <caps>
          <name>src</name>
          <direction>source</direction>
          <presence>always</presence>
          <details>video/x-raw, format=(string){ Y800, I420, YV12, NV12, NV21, Y41B, Y42B }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</details>
        </caps>
      </pads>
    </element>
  </elements>
</plugin>