R9MIDISequencer

MIDI Sequencer for iOS on swift.

Feature

Sequencing

R9MIDISequencer now features a full MIDI Sequencer with EXS24 and SoundFont samplers which can be tied to your instruments for awesome, accurate playback.

Example Code

Play note using the sampler:

import R9MIDISequencer

let url = Bundle.main.url(forResource: “Sound Font File Name”,
        withExtension: "sf2",
        subdirectory: "Sounds")
        
let sampler = Sampler(bankURL: url!, program: 0, bankMSB: 0x79, bankLSB: 0, channelNumber: 1)

// Play the note C
sampler.startNoteWithNumber(36)
// Play the note G
sampler.startNoteWithNumber(43)

Play MIDI file using the Sequencer:

let sequencer = Sequencer(sampler: sampler, enableLooping: true)

let midiUrl = Bundle.main.url(forResource: “MIDI File",
        withExtension: "mid")
sequencer.playWithMidiURL(midiUrl)

Callback from MIDI message

class GameScene: SKScene, MIDIMessageListener {
    override func didMoveToView(view: SKView) {
        
        ...Initialize sampler
        
        let sequencer = Sequencer(sampler: sampler, enableLooping: true)
        sequencer.addListener(self)
        
        ...Play MIDI
        
    }
    
    func midiNoteOn(note: UInt32, velocity: UInt32, channel: UInt32) {
        // Call back of note on message.
    }
    func midiNoteOff(note: UInt32, channel: UInt32) {
        // Call back of note off message.
    }
    func midiSequenceDidFinish() {
        // Call back of finish MIDI sequence.
    }
}

Installation