AVAudioEngine Reverb On/Off

gistfile1.txt

	func reverbControl(onoff: Bool) {

		let status = playerNode.isPlaying

		offsetFrame = Int(self.slider.value)
		
		if status {
		
			playerNode.pause()

			playerNode.stop()

			engine.stop()

		}

		if onoff {

			engine.connect(playerNode, to: reverb, format: audioFile.processingFormat)
			engine.connect(reverb, to: engine.mainMixerNode, format: audioFile.processingFormat)

			playerNode.scheduleSegment(audioFile,
				startingFrame: AVAudioFramePosition(self.slider.value),
				frameCount: AVAudioFrameCount(audioFile.length) - UInt32(self.slider.value),
				at: nil,
				completionHandler: self.completion)

		} else {

			engine.connect(playerNode, to: engine.mainMixerNode, format: audioFile.processingFormat)

			playerNode.scheduleSegment(audioFile,
				startingFrame: AVAudioFramePosition(self.slider.value),
				frameCount: AVAudioFrameCount(audioFile.length) - UInt32(self.slider.value),
				at: nil,
				completionHandler: self.completion)
		}

		if status {

			do {
				try engine.start()
			} catch {
				print(error)
			}

			playerNode.play()
		}
	}