func (packet Packet) Send(port *OutputPort, destination *Destination) (err error) {
osStatus := C.MIDISend(port.port, destination.endpoint, &packet.packetList)
if osStatus != C.noErr {
err = errors.New(fmt.Sprintf("%d: failed to send MIDI", int(osStatus)))
}
return
}
func handleNoteEvent(n NoteEvent, output Output) {
var packetList C.MIDIPacketList
if n.On {
packetList = C.MidiNoteOn((C.int)(n.Note), (C.int)(output.midiChannel), (C.int)(n.Velocity))
} else {
packetList = C.MidiNoteOff((C.int)(n.Note), (C.int)(output.midiChannel), (C.int)(0))
}
C.MIDISend(output.cmPort, output.destination, &packetList)
}