I am trying to build a sequencer that render the note from midi file.
Currently I am using AudioKit for the music data processing. Would like to know how can I get the
Have you looked at any of the example Audio Kit projects available for download? they are very useful for troubleshooting AK. I actually find the examples better than the documentation (as implementation isn't explained very well).
As for your question you can add a midi listener to an event, there is an example of this code in the Analog Synth X Project available here.
let midi = AKMIDI()
midi.createVirtualPorts()
midi.openInput("Session 1")
midi.addListener(self)
For a more worked bit of code you can refer to this although the code is likely out of date in parts.