private void GetScreen()
{
lock (LOCK)
{
try
{
Rectangle bounds = Rectangle.Empty;
interruptGrabbing = false;
while (!interruptGrabbing)
{
nextScreen = screenGrabber.GetScreenShot();
if (nextScreen == null)
{
break;
}
bounds = LdpScreenProcessingUtils.GetBoundingBoxForChanges(nextScreen, prevScreen);
if (bounds != Rectangle.Empty)
{
interruptGrabbing = true;
CheckRectangleBounds(ref bounds);
difference = LdpScreenProcessingUtils.CopyRegion(nextScreen, bounds);
origData = LdpScreenProcessingUtils.ImageToByteArray(difference);
baseLenght = origData.Length;
compressed = LZ4Codec.Encode(origData, 0, baseLenght);
rect = LdpRectangle.CreateBuilder();
rect.Left = bounds.Left;
rect.Top = bounds.Top;
rect.Right = bounds.Right;
rect.Bottom = bounds.Bottom;
SendScreenResponse(compressed, baseLenght, rect);
difference.Dispose();
difference = null;
rect = null;
origData = null;
compressed = null;
}
prevScreen = nextScreen;
}
}
catch (Exception ex)
{
LdpLog.Error("GetScreen thrown:\n" + ex.Message);
}
}
}
private void SendScreenResponse(byte[] compr, int len, LdpRectangle.Builder r)
{
screenResponse = null;
responsePacket = null;
screenResponse = packetFactory.SetScreenResponse(compr, len, r);
responsePacket = packetFactory.BuildPacket(screenResponse);
serverHandler.GetSenderChannel.Send(responsePacket);
}
public LdpScreenResponse SetScreenResponse(byte[] compressed,
int baseLenght, LdpRectangle.Builder rect)
{
var response = LdpScreenResponse.CreateBuilder();
ByteString bytes = ByteString.CopyFrom(compressed);
response.CompressedScreen = bytes;
response.BaseLenght = baseLenght;
response.SetRect(rect);
return response.Build();
}
