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

<plugin>
  <name>srtp</name>
  <description>GStreamer SRTP</description>
  <filename>../../ext/srtp/.libs/libgstsrtp.so</filename>
  <basename>libgstsrtp.so</basename>
  <version>1.12.0</version>
  <license>LGPL</license>
  <source>gst-plugins-bad</source>
  <package>GStreamer</package>
  <origin>http://gstreamer.net/</origin>
  <elements>
    <element>
      <name>srtpdec</name>
      <longname>SRTP decoder</longname>
      <class>Filter/Network/SRTP</class>
      <description>A SRTP and SRTCP decoder</description>
      <author>Gabriel Millaire &lt;millaire.gabriel@collabora.com&gt;</author>
      <pads>
        <caps>
          <name>rtcp_sink</name>
          <direction>sink</direction>
          <presence>always</presence>
          <details>application/x-srtcp</details>
        </caps>
        <caps>
          <name>rtp_sink</name>
          <direction>sink</direction>
          <presence>always</presence>
          <details>application/x-srtp</details>
        </caps>
        <caps>
          <name>rtcp_src</name>
          <direction>source</direction>
          <presence>always</presence>
          <details>application/x-rtcp</details>
        </caps>
        <caps>
          <name>rtp_src</name>
          <direction>source</direction>
          <presence>always</presence>
          <details>application/x-rtp</details>
        </caps>
      </pads>
    </element>
    <element>
      <name>srtpenc</name>
      <longname>SRTP encoder</longname>
      <class>Filter/Network/SRTP</class>
      <description>A SRTP and SRTCP encoder</description>
      <author>Gabriel Millaire &lt;millaire.gabriel@collabora.com&gt;</author>
      <pads>
        <caps>
          <name>rtcp_sink_%u</name>
          <direction>sink</direction>
          <presence>request</presence>
          <details>application/x-rtcp</details>
        </caps>
        <caps>
          <name>rtp_sink_%u</name>
          <direction>sink</direction>
          <presence>request</presence>
          <details>application/x-rtp</details>
        </caps>
        <caps>
          <name>rtcp_src_%u</name>
          <direction>source</direction>
          <presence>sometimes</presence>
          <details>application/x-srtcp</details>
        </caps>
        <caps>
          <name>rtp_src_%u</name>
          <direction>source</direction>
          <presence>sometimes</presence>
          <details>application/x-srtp</details>
        </caps>
      </pads>
    </element>
  </elements>
</plugin>