Initial commit

mapping.go

@@ -0,0 +1,40 @@
+package main
+
+import (
+	"gitlab.com/gomidi/midi/v2"
+)
+
+type Mapping interface {
+	Is(midi.Message) bool
+}
+
+type ButtonMapping struct {
+	midiChannel uint8
+	midiKey uint8
+}
+
+func (m ButtonMapping) Is(msg midi.Message) bool {
+	var channel, key uint8
+
+	switch {
+	case msg.GetNoteOn(&channel, &key, nil), msg.GetNoteOff(&channel, &key, nil):
+		return (m.midiChannel == channel && m.midiKey == key)
+	default:
+		return false
+	}
+}
+
+type ControlMapping struct {
+	midiChannel uint8
+	midiController uint8
+}
+
+func (m ControlMapping) Is(msg midi.Message) bool {
+	var channel, controller uint8
+
+	if msg.GetControlChange(&channel, &controller, nil) {
+		return (m.midiChannel == channel && m.midiController == controller)
+	} else {
+		return false
+	}
+}