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//
// Reference: https://www.raywenderlich.com/79150/grand-central-dispatch-tutorial-swift-part-2
//

var GlobalMainQueue: dispatch_queue_t {
  return dispatch_get_main_queue()
}
 
var GlobalUserInteractiveQueue: dispatch_queue_t {
  return dispatch_get_global_queue(Int(QOS_CLASS_USER_INTERACTIVE.value), 0)

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//
// Reference from http://samwize.com/2015/11/06/guide-to-customizing-uitableview-section-header-footer/
//
class TableSectionHeader: UITableViewHeaderFooterView {
    @IBOutlet weak var titleLabel: UILabel!
}

let nib = UINib(nibName: "TableSectionHeader", bundle: nil)
tableView.registerNib(nib, forHeaderFooterViewReuseIdentifier: "TableSectionHeader")

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func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) {
    cell.separatorInset = UIEdgeInsetsZero
    cell.preservesSuperviewLayoutMargins = false
    cell.layoutMargins = UIEdgeInsetsMake(0, 8, 0, 0)
  }

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class MyView: UIView {

  @IBOutlet weak var label: UILabel!
 
  class func instanceFromNib() -> MyView {
    return UINib(nibName: "MyView", bundle: nil).instantiateWithOwner(nil, options: nil)[0] as! MyView
  }

}

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func getSearchTextField() -> UITextField {
    return valueForKey("_searchField") as! UITextField
  }

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extension UIView {
  func allConstraints() -> [NSLayoutConstraint] {
    var constraints = [NSLayoutConstraint]()
    constraints += self.constraints
    
    var superview = self.superview
    while superview != nil {
      for c in superview!.constraints {
        if c.firstItem as? UIView == self || c.secondItem as? UIView == self {
          constraints.append(c)

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NSLayoutConstraint.activateConstraints(constraints)
    
    UIView.animateWithDuration(0.5) {
      self.view.layoutIfNeeded()
    }

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import AVFoundation

private func showDialogWithTitle(title: String?, msg: String?) {
    let alertController = UIAlertController(title: title, message: msg, preferredStyle: UIAlertControllerStyle.Alert)
    alertController.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.Default, handler: nil))
    self.presentViewController(alertController, animated: true, completion: nil)
  }

  @IBAction func didTapButton(sender: AnyObject) {
    let authorizationStatus: AVAuthorizationStatus = AVCaptureDevice.authorizationStatusForMediaType(AVMediaTypeVideo)

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func fixOrientation() -> UIImage {
    
    // No-op if the orientation is already correct
    if ( self.imageOrientation == UIImageOrientation.Up ) {
      return self;
    }
    
    // We need to calculate the proper transformation to make the image upright.
    // We do it in 2 steps: Rotate if Left/Right/Down, and then flip if Mirrored.
    var transform: CGAffineTransform = CGAffineTransformIdentity

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let asset = AVURLAsset(URL: NSURL(string: self.scheduleCelebrityGame.videoLink!)!, options: nil)
let imgGenerator = AVAssetImageGenerator(asset: asset)
do {
  let cgImage = try imgGenerator.copyCGImageAtTime(CMTimeMake(0, 1), actualTime: nil)
  let uiImage = UIImage(CGImage: cgImage, scale: CGFloat(1.0), orientation: UIImageOrientation.Right)
  let uiImageJPEG =  UIImageJPEGRepresentation(uiImage, 1.0)!
} catch {
  
}