func midiLoop(s *portmidi.Stream) {
noteOn := make([]int64, 0, 128)
for e := range s.Listen() {
switch e.Status {
case 144: // note on
on := false
for _, n := range noteOn {
if n == e.Data1 {
on = true
}
}
if !on {
noteOn = append(noteOn, e.Data1)
}
atomic.StoreInt64(&midiNote, e.Data1)
atomic.StoreInt64(&midiGate, 1)
case 128: // note off
for i, n := range noteOn {
if n == e.Data1 {
copy(noteOn[i:], noteOn[i+1:])
noteOn = noteOn[:len(noteOn)-1]
}
}
if len(noteOn) > 0 {
n := noteOn[len(noteOn)-1]
atomic.StoreInt64(&midiNote, n)
} else {
atomic.StoreInt64(&midiGate, 0)
}
}
}
}
func midiLoop(s *portmidi.Stream) {
var n int64
for e := range s.Listen() {
switch e.Status {
case 144: // note on
n = e.Data1
atomic.StoreInt64(&midiNote, n)
atomic.StoreInt64(&midiGate, 1)
case 128: // note off
if e.Data1 == n {
atomic.StoreInt64(&midiGate, 0)
}
}
}
}
func AllNotesOff(stream *portmidi.Stream) {
stream.WriteShort(0xB0|(midiChan-1), 0x7B, 0x00)
playing = -1
}
func NoteOff(stream *portmidi.Stream, note int64, velocity int64) {
stream.WriteShort(0x80|(midiChan-1), note, velocity)
playing = -1
}
func NoteOn(stream *portmidi.Stream, note int64, velocity int64) {
playing = note
stream.WriteShort(0x90|(midiChan-1), note, velocity)
}