checkVoiceRecordValue, appendSampleValue to voiceRecordSampleView

Yep/ViewControllers/NewFeedVoiceRecord/NewFeedVoiceRecord.storyboard

@@ -92,6 +92,7 @@
                     </navigationItem>
                     <connections>
                         <outlet property="voiceRecordButton" destination="RHU-Kc-Wb9" id="sNA-HQ-sU2"/>
+                        <outlet property="voiceRecordSampleView" destination="RCG-r4-rAb" id="08Y-Px-kgb"/>
                     </connections>
                 </viewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="GYe-Vs-C7U" userLabel="First Responder" sceneMemberID="firstResponder"/>

Yep/ViewControllers/NewFeedVoiceRecord/NewFeedVoiceRecordViewController.swift

@@ -11,6 +11,8 @@ import AVFoundation
 
 class NewFeedVoiceRecordViewController: UIViewController {
 
+    @IBOutlet weak var voiceRecordSampleView: VoiceRecordSampleView!
+
     @IBOutlet weak var voiceRecordButton: UIButton!
 
     var isVoiceRecording = false {
@@ -22,10 +24,15 @@ class NewFeedVoiceRecordViewController: UIViewController {
 
     var voiceFileURL: NSURL?
 
+    var displayLink: CADisplayLink!
+
     override func viewDidLoad() {
         super.viewDidLoad()
 
         title = NSLocalizedString("New Voice", comment: "")
+
+        displayLink = CADisplayLink(target: self, selector: "checkVoiceRecordValue")
+        displayLink.addToRunLoop(NSRunLoop.currentRunLoop(), forMode: NSRunLoopCommonModes)
     }
 
     // MARK: - Actions
@@ -34,6 +41,20 @@ class NewFeedVoiceRecordViewController: UIViewController {
         dismissViewControllerAnimated(true, completion: nil)
     }
 
+    func checkVoiceRecordValue() {
+
+        if let audioRecorder = YepAudioService.sharedManager.audioRecorder {
+
+            if (audioRecorder.recording) {
+                audioRecorder.updateMeters()
+                let normalizedValue = pow(10, audioRecorder.averagePowerForChannel(0)/40)
+                let value = CGFloat(normalizedValue)
+
+                voiceRecordSampleView.appendSampleValue(value)
+            }
+        }
+    }
+
     @IBAction func voiceRecord(sender: UIButton) {
 
         if isVoiceRecording {

Yep/Views/AudioWaves/VoiceRecordSampleView.swift

@@ -10,6 +10,8 @@ import UIKit
 
 class VoiceRecordSampleView: UIView {
 
+    var sampleValues: [CGFloat] = []
+
     lazy var sampleCollectionViewLayout: UICollectionViewFlowLayout = {
         let layout = UICollectionViewFlowLayout()
         layout.minimumInteritemSpacing = 0
@@ -60,6 +62,13 @@ class VoiceRecordSampleView: UIView {
         NSLayoutConstraint.activateConstraints(sampleCollectionViewConstraintH)
         NSLayoutConstraint.activateConstraints(sampleCollectionViewConstraintV)
     }
+
+    func appendSampleValue(value: CGFloat) {
+        sampleValues.append(value)
+
+        let indexPath = NSIndexPath(forItem: sampleValues.count - 1, inSection: 0)
+        sampleCollectionView.insertItemsAtIndexPaths([indexPath])
+    }
 }
 
 extension VoiceRecordSampleView: UICollectionViewDataSource {
@@ -69,7 +78,7 @@ extension VoiceRecordSampleView: UICollectionViewDataSource {
     }
 
     func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
-        return 300
+        return sampleValues.count
     }
 
     func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {