public static void HandleGetDesktop(GetDesktop command, Client client)
{
// TODO: Capture mouse in frames: https://stackoverflow.com/questions/6750056/how-to-capture-the-screen-and-mouse-pointer-using-windows-apis
var monitorBounds = ScreenHelper.GetBounds((command.DisplayIndex));
var resolution = new Resolution {
Height = monitorBounds.Height, Width = monitorBounds.Width
};
if (StreamCodec == null)
{
StreamCodec = new UnsafeStreamCodec(command.Quality, command.DisplayIndex, resolution);
}
if (command.CreateNew || StreamCodec.ImageQuality != command.Quality || StreamCodec.Monitor != command.DisplayIndex ||
StreamCodec.Resolution != resolution)
{
if (StreamCodec != null)
{
StreamCodec.Dispose();
}
StreamCodec = new UnsafeStreamCodec(command.Quality, command.DisplayIndex, resolution);
}
BitmapData desktopData = null;
Bitmap desktop = null;
try
{
desktop = ScreenHelper.CaptureScreen(command.DisplayIndex);
desktopData = desktop.LockBits(new Rectangle(0, 0, desktop.Width, desktop.Height),
ImageLockMode.ReadWrite, desktop.PixelFormat);
using (MemoryStream stream = new MemoryStream())
{
if (StreamCodec == null)
{
throw new Exception("StreamCodec can not be null.");
}
StreamCodec.CodeImage(desktopData.Scan0,
new Rectangle(0, 0, desktop.Width, desktop.Height),
new Size(desktop.Width, desktop.Height),
desktop.PixelFormat, stream);
client.Send(new GetDesktopResponse
{
Image = stream.ToArray(),
Quality = StreamCodec.ImageQuality,
Monitor = StreamCodec.Monitor,
Resolution = StreamCodec.Resolution
});
}
}
catch (Exception)
{
if (StreamCodec != null)
{
client.Send(new GetDesktopResponse
{
Image = null,
Quality = StreamCodec.ImageQuality,
Monitor = StreamCodec.Monitor,
Resolution = StreamCodec.Resolution
});
}
StreamCodec = null;
}
finally
{
if (desktop != null)
{
if (desktopData != null)
{
try
{
desktop.UnlockBits(desktopData);
}
catch
{
}
}
desktop.Dispose();
}
}
}
private void Execute(ISender client, GetDesktop message)
{
// TODO: Switch to streaming mode without request-response once switched from windows forms
// TODO: Capture mouse in frames: https://stackoverflow.com/questions/6750056/how-to-capture-the-screen-and-mouse-pointer-using-windows-apis
var monitorBounds = ScreenHelper.GetBounds((message.DisplayIndex));
var resolution = new Resolution {
Height = monitorBounds.Height, Width = monitorBounds.Width
};
if (_streamCodec == null)
{
_streamCodec = new UnsafeStreamCodec(message.Quality, message.DisplayIndex, resolution);
}
if (message.CreateNew || _streamCodec.ImageQuality != message.Quality || _streamCodec.Monitor != message.DisplayIndex ||
_streamCodec.Resolution != resolution)
{
_streamCodec?.Dispose();
_streamCodec = new UnsafeStreamCodec(message.Quality, message.DisplayIndex, resolution);
}
BitmapData desktopData = null;
Bitmap desktop = null;
try
{
desktop = ScreenHelper.CaptureScreen(message.DisplayIndex);
desktopData = desktop.LockBits(new Rectangle(0, 0, desktop.Width, desktop.Height),
ImageLockMode.ReadWrite, desktop.PixelFormat);
using (MemoryStream stream = new MemoryStream())
{
if (_streamCodec == null)
{
throw new Exception("StreamCodec can not be null.");
}
_streamCodec.CodeImage(desktopData.Scan0,
new Rectangle(0, 0, desktop.Width, desktop.Height),
new Size(desktop.Width, desktop.Height),
desktop.PixelFormat, stream);
client.Send(new GetDesktopResponse
{
Image = stream.ToArray(),
Quality = _streamCodec.ImageQuality,
Monitor = _streamCodec.Monitor,
Resolution = _streamCodec.Resolution
});
}
}
catch (Exception)
{
if (_streamCodec != null)
{
client.Send(new GetDesktopResponse
{
Image = null,
Quality = _streamCodec.ImageQuality,
Monitor = _streamCodec.Monitor,
Resolution = _streamCodec.Resolution
});
}
_streamCodec = null;
}
finally
{
if (desktop != null)
{
if (desktopData != null)
{
try
{
desktop.UnlockBits(desktopData);
}
catch
{
}
}
desktop.Dispose();
}
}
}
