public static bool Initialize()
{
if (_initialized)
{
return(true);
}
var portCount = MidiInput.GetPortCount();
if (portCount == 0)
{
return(false);
}
devices = new IntPtr[portCount];
for (uint i = 0; i < portCount; i++)
{
devices[i] = MidiInternal.rtmidi_in_create_default();
MidiInternal.rtmidi_in_ignore_types(devices[i], true, false, false);
MidiInternal.rtmidi_open_port(devices[i], i, "Why am i doing this? " + i);
}
startTime = EditorApplication.timeSinceStartup;
EditorApplication.update += Update;
EditorApplication.playModeStateChanged += EditorApplicationOnplayModeStateChanged;
_initialized = true;
return(true);
}
private static void Update()
{
if (!_initialized)
{
return;
}
if (EditorApplication.isPlaying ||
EditorApplication.timeSinceStartup - startTime > 10 ||
devices.Length != MidiInput.GetPortCount())
{
OnNextNote?.Invoke(new MidiID(-1, -1, -1, MidiStatus.Dummy));
Shutdown();
return;
}
IntPtr messages = Marshal.AllocHGlobal(1024);
IntPtr size = Marshal.AllocHGlobal(4);
for (int i = 0; i < devices.Length; i++)
{
while (true)
{
Marshal.WriteInt32(size, 1024);
MidiInternal.rtmidi_in_get_message(devices[i], messages, size);
if (Marshal.ReadInt32(size) == 0)
{
break;
}
byte[] m = new byte[Marshal.ReadInt32(size)];
Marshal.Copy(messages, m, 0, m.Length);
var status = (MidiStatus)((m[0] >> 4));
if (status == MidiStatus.NoteOff)
{
status = MidiStatus.NoteOn;
}
OnNextNote?.Invoke(new MidiID(m[0] & 0x0F, m[1], i, status));
Shutdown();
Marshal.FreeHGlobal(size);
Marshal.FreeHGlobal(messages);
return;
}
}
//deallocate pointers
Marshal.FreeHGlobal(size);
Marshal.FreeHGlobal(messages);
}