AudioBus Icon

gistfile1.txt

 // **********************************************************
    // MARK: - AudioBus Host Icon
    // **********************************************************
    
    private func startObservingInterAppAudioConnections() {
        audioUnitPropertyListener = AudioUnitPropertyListener { (audioUnit, property) in
            self.hostAppIcon.image = AudioOutputUnitGetHostIcon(AudioKit.engine.outputNode.audioUnit!, 44)
        }
        
        AudioKit.engine.outputNode.audioUnit!.add(listener: audioUnitPropertyListener, toProperty: kAudioUnitProperty_IsInterAppConnected)
    }
    
    @IBAction func openHostApp(_ sender: AnyObject) {
        
        var url: CFURL = CFURLCreateWithString(nil, "" as CFString!, nil)
        var size = UInt32(MemoryLayout<CFURL>.size)
        let result = AudioUnitGetProperty(
            AudioKit.engine.outputNode.audioUnit!,
            AudioUnitPropertyID(kAudioUnitProperty_PeerURL),
            AudioUnitScope(kAudioUnitScope_Global),
            0,
            &url,
            &size)
        
        if result == noErr {
            UIApplication.shared.open(url as URL)
        }
    }