MIDI plugin for Godot on iOS

I hacked this together after discovering that the MIDI support in Godot is not available on iOS. This plugin uses the CoreMIDI framework to receive MIDI events.

Build

1. Install uv from https://docs.astral.sh/uv/
2. Install xcode and command line tools
3. Build godot headers by running make godot-headers
4. Run make
5. Copy bin/godot_ios_midi.a and src/godot_ios_midi.gdip to your Godot project's ios/plugins directory
6. Enable plugin on export

Usage

public override void _Ready()
{
    if (Engine.HasSingleton("MidiIOS"))
    {
        var plugin = Engine.GetSingleton("MidiIOS");
        plugin.Connect(
            "midi_event",
            Callable.From(
                (Godot.Collections.Dictionary eventData) => OnMidiEvent(eventData)
            )
        );
    }
}

public void OnMidiEvent(Godot.Collections.Dictionary eventData)
{
    byte[] midiBytes = (byte[])eventData["data"];
    var timestamp = (double)eventData["timestamp"];

    GD.Print(
        $"MIDI Event Received - Timestamp: {timestamp}, Data: {BitConverter.ToString(midiBytes)}
    );
}