Grab the max and avg values of an audio sample

WorkSpace.swift

class WorkSpace: CanvasController {
    var max0 = 0.0
    var max1 = 0.0
    var avg0 = 0.0
    var avg1 = 0.0

    var player = AudioPlayer("BlackVelvet.m4a")!

    var timer: Timer?

    override func setup() {
        player.meteringEnabled = true

        timer = Timer(interval: 1/60.0) {
            self.player.updateMeters()
            self.updateValues()
        }
        player.play()
        timer?.start()
    }

    func updateValues() {
        if max0 < abs(player.peakPower(0)) {
            max0 = abs(player.peakPower(0))
        }
        if max1 < abs(player.peakPower(1)) {
            max1 = abs(player.peakPower(1))
        }
        if avg0 < abs(player.averagePower(0)) {
            avg0 = abs(player.averagePower(0))
        }
        if avg1 < abs(player.averagePower(1)) {
            avg1 = abs(player.averagePower(1))
        }
        print("\(max0)\t\(max1)\t\(avg0)\t\(avg1)")
    }
}