Add orx-midi

orx-midi/src/main/kotlin/MidiEvent.kt

@@ -0,0 +1,47 @@
+package org.openrndr.extra.midi
+
+enum class MidiEventType {
+    NOTE_ON,
+    NOTE_OFF,
+    CONTROL_CHANGED
+}
+
+
+class MidiEvent(val eventType: MidiEventType) {
+    var origin = Origin.DEVICE
+    var control: Int = 0
+    var note: Int = 0
+    var channel: Int = 0
+    var value: Int = 0
+    var velocity: Int = 0
+
+    enum class Origin {
+        DEVICE,
+        USER
+    }
+
+    companion object {
+        fun noteOn(channel: Int, note: Int, velocity: Int): MidiEvent {
+            val midiEvent = MidiEvent(MidiEventType.NOTE_ON)
+            midiEvent.velocity = velocity
+            midiEvent.note = note
+            midiEvent.channel = channel
+            return midiEvent
+        }
+
+        fun noteOff(channel: Int, note: Int): MidiEvent {
+            val midiEvent = MidiEvent(MidiEventType.NOTE_OFF)
+            midiEvent.note = note
+            midiEvent.channel = channel
+            return midiEvent
+        }
+
+        fun controlChange(channel:Int, control: Int, value: Int): MidiEvent {
+            val midiEvent = MidiEvent(MidiEventType.CONTROL_CHANGED)
+            midiEvent.channel = channel
+            midiEvent.control = control
+            midiEvent.value = value
+            return midiEvent
+        }
+    }
+}