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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Threading;
using Tango.RemoteDesktop;
using Tango.RemoteDesktop.CaptureMethods;
using Tango.RemoteDesktop.Encoders;
using Tango.RemoteDesktop.Engines;
using Tango.RemoteDesktop.Frames;
namespace WpfApp1
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
private RasterScreenCaptureEngine _engine;
private Bitmap _currentBitmap;
public MainWindow()
{
InitializeComponent();
ContentRendered += MainWindow_ContentRendered;
_engine = new RasterScreenCaptureEngine()
{
CaptureRegion = new CaptureRegion(0, 0, 1280, 800)
};
_engine.CaptureMethod = new GdiScreenCapture();
_engine.FrameRate = 5; //Per second
_engine.CaptureCursor = true;
_engine.FrameReceived += _engine_FrameReceived;
}
private void _engine_FrameReceived(object sender, ScreenCaptureFrameReceivedEventArgs<RasterFrame> e)
{
BitmapSource preview = null;
Stopwatch watch = new Stopwatch();
int size = 0;
long encodingTime = 0;
if (e.Frame.DifferenceAvailable)
{
if (e.Frame.DifferenceCount > 0)
{
watch.Restart();
var diffFrame = e.Frame.ToDifference();
MemoryStream bitmapStream = null;
//This is the best possible outcome !!!
diffFrame = diffFrame.OptimizeBounds();
bitmapStream = diffFrame.ToEncoder<PngEncoder>().ToStream();
encodingTime = watch.ElapsedMilliseconds;
size = (int)bitmapStream.Length;
Bitmap newBitmap = new Bitmap(bitmapStream);
diffFrame = new RasterFrame(newBitmap, diffFrame.Left, diffFrame.Top);
diffFrame.Apply(_currentBitmap);
diffFrame.Dispose();
bitmapStream.Dispose();
var updatedFrame = new RasterFrame(_currentBitmap);
preview = updatedFrame.ToBitmapSource();
Debug.WriteLine($"Actual frame size on network: {Math.Round((double)size / 1000d, 2)} kb, Encoding time: {encodingTime} milli, Differences: {e.Frame.DifferenceCount}");
Dispatcher.BeginInvoke(new Action(() =>
{
img.Source = preview;
}));
}
else
{
//No need to send new frames (no differences)...
}
}
else
{
_currentBitmap = e.Frame.ToBitmap().Clone() as Bitmap;
preview = e.Frame.ToBitmapSource();
size = e.Frame.ToEncoder<Png8BitEncoder>().ToArray().Length;
Dispatcher.BeginInvoke(new Action(() =>
{
img.Source = preview;
}));
}
e.Frame.Dispose();
}
private void MainWindow_ContentRendered(object sender, EventArgs e)
{
_engine.Start();
}
}
}
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