Counting number of times an NSSound loops (Swift)

Question

As the title suggests, I'm trying to figure out how to count the number of times an NSSound loops (or, more accurately, have a function run at the beginning and/or end of each loop). I've looked at all the documentation, but I can't find anything. Any help would be greatly appreciated.

UPDATE: I've tried using func sound(sound: NSSound, didFinishPlaying aBool: Bool), but it doesn't seem to trigger after a loop completes. The code:

func sound(sound: NSSound, didFinishPlaying aBool: Bool) {
    pbNowPlaying.doubleValue = sound.currentTime
    if aBool == true {
        self.btnPlay.title = NSLocalizedString("titlePlay", comment: "Play")
        self.btnPlay.state = NSOffState
        self.pbNowPlaying.doubleValue = 0
        self.btnPlay.needsDisplay = true

    }
    else {
        Swift.print("Sound Looping")
    }
    self.needsDisplay = true

}

Answer 1

Have you tried the didFinishPlaying function? It is called every time the sound file finishes its clip.

optional func sound(_ sound: NSSound, didFinishPlaying aBool: Bool)

What about creating a variable that will increase each time the function is called forth? Something easy that will keep track of a count? The count is what your looking for correct?

var count = 0

func sound(sound: NSSound, didFinishPlaying aBool: Bool) {
pbNowPlaying.doubleValue = sound.currentTime
if aBool == true {
    self.btnPlay.title = NSLocalizedString("titlePlay", comment: "Play")
    self.btnPlay.state = NSOffState
    self.pbNowPlaying.doubleValue = 0
    self.btnPlay.needsDisplay = true

    //Start playing sound again after it has ended.
    count + 1
}
else {
    Swift.print("Sound Looping")
}
self.needsDisplay = true

}

Answer 2

loops Property

A Boolean that indicates whether the sound restarts playback when it reaches the end of its content.

Declaration

SWIFT var loops: Bool

OBJECTIVE-C @property BOOL loops

Discussion

When the value of this property is YES, the sounds restarts playback when it finishes and does not send sound:didFinishPlaying: to its delegate when it reaches the end of its content and restarts playback. The default value of this property is NO.

i recommend you set it to false and restart play 'manualy' when you receive didFinishPlaying

another option is using duration and currentTime and calculate number of loops