public override void ViewDidLoad()
{
base.ViewDidLoad();
var sampleURL = NSBundle.MainBundle.GetUrlForResource("sample_iPod", "m4v");
var movieFile = new GPUImageMovie(sampleURL);
movieFile.RunBenchmark = true;
movieFile.PlayAtActualSpeed = false;
filter = new GPUImagePixellateFilter();
movieFile.AddTarget(filter);
// Only rotate the video for display, leave orientation the same for recording
filter.AddTarget(imageView);
// In addition to displaying to the screen, write out a processed version of the movie to disk
var documents = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
var pathToMovie = Path.Combine(documents, "Movie.m4v");
// If a file already exists, AVAssetWriter won't let you record new frames, so delete the old movie
if (File.Exists(pathToMovie))
{
File.Delete(pathToMovie);
}
var movieURL = new NSUrl(pathToMovie, false);
var movieWriter = new GPUImageMovieWriter(movieURL, new CGSize(640.0f, 480.0f));
filter.AddTarget(movieWriter);
// Configure this for video from the movie file, where we want to preserve all video frames and audio samples
movieWriter.ShouldPassthroughAudio = true;
movieFile.AudioEncodingTarget = movieWriter;
movieFile.EnableSynchronizedEncoding(movieWriter);
var timer = NSTimer.CreateRepeatingScheduledTimer(0.3, _ => {
progressLabel.Text = movieFile.Progress.ToString("P0");
});
movieWriter.CompletionHandler = async() => {
filter.RemoveTarget(movieWriter);
await movieWriter.FinishRecordingAsync();
InvokeOnMainThread(() => {
timer.Invalidate();
progressLabel.Text = 1.ToString ("P0");
});
};
OnPixelWidthChanged(pixelWidthSlider);
movieWriter.StartRecording();
movieFile.StartProcessing();
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
stillCamera = new GPUImageStillCamera();
stillCamera.OutputImageOrientation = InterfaceOrientation;
pixellateFilter = new GPUImagePixellateFilter();
sepiaFilter = new GPUImageSepiaFilter();
stillCamera.AddTarget(pixellateFilter);
pixellateFilter.AddTarget(sepiaFilter);
sepiaFilter.AddTarget(imageView);
stillCamera.StartCameraCapture();
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
videoCamera = new GPUImageVideoCamera(AVCaptureSession.Preset640x480, AVCaptureDevicePosition.Back);
videoCamera.OutputImageOrientation = InterfaceOrientation;
videoCamera.HorizontallyMirrorFrontFacingCamera = false;
videoCamera.HorizontallyMirrorRearFacingCamera = false;
pixellateFilter = new GPUImagePixellateFilter();
sepiaFilter = new GPUImageSepiaFilter();
videoCamera.AddTarget(pixellateFilter);
pixellateFilter.AddTarget(sepiaFilter);
sepiaFilter.AddTarget(imageView);
videoCamera.StartCameraCapture();
}