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

<plugin>
  <name>speex</name>
  <description>Speex plugin library</description>
  <filename>../../ext/speex/.libs/libgstspeex.so</filename>
  <basename>libgstspeex.so</basename>
  <version>1.15.0.1</version>
  <license>LGPL</license>
  <source>gst-plugins-good</source>
  <package>GStreamer Good Plug-ins git</package>
  <origin>Unknown package origin</origin>
  <elements>
    <element>
      <name>speexdec</name>
      <longname>Speex audio decoder</longname>
      <class>Codec/Decoder/Audio</class>
      <description>decode speex streams to audio</description>
      <author>Wim Taymans &lt;wim@fluendo.com&gt;</author>
      <pads>
        <caps>
          <name>sink</name>
          <direction>sink</direction>
          <presence>always</presence>
          <details>audio/x-speex</details>
        </caps>
        <caps>
          <name>src</name>
          <direction>source</direction>
          <presence>always</presence>
          <details>audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)[ 6000, 48000 ], channels=(int)[ 1, 2 ]</details>
        </caps>
      </pads>
    </element>
    <element>
      <name>speexenc</name>
      <longname>Speex audio encoder</longname>
      <class>Codec/Encoder/Audio</class>
      <description>Encodes audio in Speex format</description>
      <author>Wim Taymans &lt;wim@fluendo.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)[ 6000, 48000 ], channels=(int)1; audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)[ 6000, 48000 ], channels=(int)2, channel-mask=(bitmask)0x0000000000000003</details>
        </caps>
        <caps>
          <name>src</name>
          <direction>source</direction>
          <presence>always</presence>
          <details>audio/x-speex, rate=(int)[ 6000, 48000 ], channels=(int)[ 1, 2 ]</details>
        </caps>
      </pads>
    </element>
  </elements>
</plugin>