zapsleep

- (UIImage*)screenshotFromView:(UIView *)view 
{
    CGSize imageSize = [view bounds].size;
    if (NULL != UIGraphicsBeginImageContextWithOptions)
        UIGraphicsBeginImageContextWithOptions(imageSize, NO, 0);
    else
        UIGraphicsBeginImageContext(imageSize);

    CGContextRef context = UIGraphicsGetCurrentContext();

zapsleep

- (UIImage*)snapshot:(UIView*)eaglview
{
    GLint backingWidth, backingHeight;
    glBindRenderbufferOES(GL_RENDERBUFFER_OES, _colorRenderbuffer);
 
    glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, 
                                    GL_RENDERBUFFER_WIDTH_OES, 
                                    &backingWidth);
    glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, 
                                    GL_RENDERBUFFER_HEIGHT_OES, 

zapsleep

- (void)setupCaptureSession 
{
    NSError *error = nil;
    AVCaptureSession *session = [[AVCaptureSession alloc] init];

    session.sessionPreset = AVCaptureSessionPresetMedium;

    AVCaptureDevice *device = [AVCaptureDevice
                           defaultDeviceWithMediaType:AVMediaTypeVideo];

zapsleep

- (UIImage *)screenshotFromFileURL:(NSURL *)url {
    AVPlayerItem *item = [AVPlayerItem playerItemWithURL:url];

    AVURLAsset *asset = (AVURLAsset *)item.asset;
    AVAssetImageGenerator *imageGenerator = [[AVAssetImageGenerator alloc] 
                                                      initWithAsset:asset];
    CGImageRef thumb = [imageGenerator 
                         copyCGImageAtTime:CMTimeMakeWithSeconds(10.0, 1.0)
                                actualTime:NULL
                                     error:NULL];

zapsleep

- (CVImageBufferRef)getImageBufferFromURL:(NSURL *)url {
    AVAsset *asset = [AVAsset assetWithURL:url];
    AVAssetTrack *track = [[asset 
                             tracksWithMediaType:AVMediaTypeVideo] 
                                   objectAtIndex:0];
    AVAssetReaderTrackOutput 
    *readerTrack = [AVAssetReaderTrackOutput 
                     assetReaderTrackOutputWithTrack:track
                                      outputSettings:nil];
    AVAssetReader *reader = [AVAssetReader assetReaderWithAsset:asset

zapsleep

-(void)addAirPlayButtonToPlayerView:(UIView *)playerView {
  //change the rectForAirPlay below to whatever you need
  MPVolumeView *airPlayButton = [[MPVolumeView alloc] 
                                    initWithFrame:rectForAirPlay];
  airPlayButton.showsVolumeSlider = NO;

  [playerView addSubview:airPlayButton];
}

zapsleep

- (UIButton *)getButtonFromVolumeView:(MPVolumeView *)volumeView {
  UIButton *button;
  for (button in volumeView.subviews) {
    if ([button isKindOfClass:[UIButton class]]) {
      break;
    }
  return button;
}

zapsleep

//setting the observer
-(void)observeAirPlayFromView:(MPVolumeView *)voluemView {
  for (UIButton *button in volumeView.subviews) {
      if([button isKindOfClass:[UIButton class]]) {
          [button addObserver:self 
                   forKeyPath:@"alpha" 
                      options:NSKeyValueObservingOptionNew 
                      context:nil];
      }
  }

zapsleep

for (UIScreen *screen in [UIScreen screens]) 
{
    if ([screen respondsToSelector:@selector(mirroredScreen)] && 
        [screen mirroredScreen] == [UIScreen mainScreen]) 
    {
        // The main screen is being mirrored.
    }
    else 
    {
        // The main screen is not being mirrored, or

zapsleep

//setting notifiers
- (void)setupScreenConnectionNotificationHandlers {
    NSNotificationCenter* center = [NSNotificationCenter 
                                      defaultCenter];
 
    [center addObserver:self selector:@selector(
                                handleScreenConnect:)
            name:UIScreenDidConnectNotification object:nil];
    [center addObserver:self selector:@selector(
                                handleScreenDisconnect:)