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+# The same set of namespace prefixes with two additions for LV2 extensions this
+# plugin uses: atom and urid.
+
+@prefix atom: <http://lv2plug.in/ns/ext/atom#> .
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix midi: <http://lv2plug.in/ns/ext/midi#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix urid: <http://lv2plug.in/ns/ext/urid#> .
+
+<http://lv2plug.in/plugins/eg-midigate>
+	a lv2:Plugin ;
+	doap:name "Example MIDI Gate" ;
+	doap:license <http://opensource.org/licenses/isc> ;
+	lv2:project <http://lv2plug.in/ns/lv2> ;
+	lv2:requiredFeature urid:map ;
+	lv2:optionalFeature lv2:hardRTCapable ;
+# Describe program banks so the host can automate and/or present a user
+# interface.  Describing supported programs (or any other MIDI event) is not
+# required, but is a good idea since it allows hosts to make better use of
+# plugins.  This plugin has a single bank of two programs, which have a
+# (mandatory) label, and an (optional) comment to describe their meaning in
+# more detail.
+#
+# Both programs and the bank have an index, which corresponds to the MIDI bank
+# and program numbers that will activate them.  Since there are other ways to
+# change programs (not used here), an index is not strictly required, but must
+# be present to support program changes from MIDI.
+	lv2:bank [
+		rdfs:label "Default" ;
+		lv2:index 0 ;
+		lv2:program [
+			lv2:index 0 ;
+			rdfs:label "Normal" ;
+			rdfs:comment "Input is passed through if notes are active."
+		] , [
+			lv2:index 1 ;
+			rdfs:label "Inverted" ;
+			rdfs:comment "Input is passed through if no notes are active."
+		]
+	] ;
+# This plugin has three ports.  There is an audio input and output as before,
+# as well as a new AtomPort.  An AtomPort buffer contains an Atom, which is a
+# generic container for any type of data.  In this case, we want to receive
+# MIDI events, so the (mandatory) +atom:bufferType+ is atom:Sequence, which is
+# a series of events with time stamps.
+#
+# Events themselves are also generic and can contain any type of data, but in
+# this case we are only interested in MIDI events.  The (optional)
+# +atom:supports+ property describes which event types are supported.  Though
+# not required, this information should always be given so the host knows what
+# types of event it can expect the plugin to understand.
+#
+# The (optional) +lv2:designation+ of this port is +lv2:control+, which
+# indicates that this is the "main" control port where the host should send
+# events it expects to configure the plugin, in this case changing the MIDI
+# program.  This is necessary since it is possible to have several MIDI input
+# ports, though typically it is best to have one.
+	lv2:port [
+		a lv2:InputPort ,
+			atom:AtomPort ;
+		atom:bufferType atom:Sequence ;
+		atom:supports midi:MidiEvent ;
+		lv2:designation lv2:control ;
+		lv2:index 0 ;
+		lv2:symbol "control" ;
+		lv2:name "Control"
+	] , [
+		a lv2:AudioPort ,
+			lv2:InputPort ;
+		lv2:index 1 ;
+		lv2:symbol "in" ;
+		lv2:name "In"
+	] , [
+		a lv2:AudioPort ,
+			lv2:OutputPort ;
+		lv2:index 2 ;
+		lv2:symbol "out" ;
+		lv2:name "Out"
+	] .