2 files changed, 15 insertions, 5 deletions
diff --git a/lv2/lv2plug.in/ns/ext/midi/lv2-midi.doap.ttl b/lv2/lv2plug.in/ns/ext/midi/lv2-midi.doap.ttl
index 4e2121f..a7f039c 100644
--- a/lv2/lv2plug.in/ns/ext/midi/lv2-midi.doap.ttl
+++ b/lv2/lv2plug.in/ns/ext/midi/lv2-midi.doap.ttl
@@ -23,6 +23,8 @@
 			] , [
 				rdfs:label "Add midi:binding and midi:channel predicates."
 			] , [
+				rdfs:label "Add midi:HexByte datatype for status bytes and masks."
+			] , [
 				rdfs:label "Remove non-standard midi:Tick message type."
 			] , [
 				rdfs:label "Add C definitions for message types and standard controllers."
diff --git a/lv2/lv2plug.in/ns/ext/midi/midi.ttl b/lv2/lv2plug.in/ns/ext/midi/midi.ttl
index faddc36..e35d3e3 100644
--- a/lv2/lv2plug.in/ns/ext/midi/midi.ttl
+++ b/lv2/lv2plug.in/ns/ext/midi/midi.ttl
@@ -98,6 +98,16 @@ midi:Controller
 		midi:property midi:controllerValue
 	] .
 
+midi:HexByte
+	a rdfs:Datatype ;
+	owl:onDatatype xsd:hexBinary ;
+	owl:withRestrictions (
+		[
+			xsd:maxInclusive "FF"
+		]
+	) ;
+	rdfs:comment "A hexadecimal byte, which is a xsd:hexBinary value <= FF" .
+
 midi:MidiEvent
 	a rdfs:Class ;
 	rdfs:label "MIDI Message" ;
@@ -352,16 +362,14 @@ midi:status
 	a rdf:Property ,
 		owl:DatatypeProperty ,
 		owl:FunctionalProperty ;
-	rdfs:range xsd:byte ,
-		xsd:hexBinary ;
+	rdfs:range midi:HexByte ;
 	rdfs:comment "The exact status byte for a message of this type." .
 
 midi:statusMask
 	a rdf:Property ,
 		owl:DatatypeProperty ,
 		owl:FunctionalProperty ;
-	rdfs:range xsd:byte ,
-		xsd:hexBinary ;
+	rdfs:range midi:HexByte ;
 	rdfs:comment """
 The status byte for a message of this type on channel 1, i.e. a status byte
 with the lower nibble set to zero.""" .
@@ -370,5 +378,5 @@ midi:velocity
 	a rdf:Property ,
 		owl:DatatypeProperty ,
 		owl:FunctionalProperty ;
-	rdfs:range xsd:byte ;
+	rdfs:range midi:HexByte ;
 	rdfs:comment "The velocity of a note message (0 to 127)." .