private static void ProceedCommand()
{
Console.WriteLine("Queue length = " + Queue.Count);
if (Queue.Count == 0)
{
Thread.Sleep(40);
}
else
{
var command = (Command)Queue.Dequeue();
if (command is QueryStateCommand)
{
var queryStateCommand = command as QueryStateCommand;
Conference conference;
//Если пришел запрос состояния без id конференции (на создание)
if (string.IsNullOrWhiteSpace(queryStateCommand.ConferenceId))
{
string id = Conference.GenerateId();
while (Conferences.Keys.Contains(id))
{
id = Conference.GenerateId();
}
conference = Conference.Start(id, (ServerWebSocketConnection)queryStateCommand.SenderConnection,
queryStateCommand.Width, queryStateCommand.Height, queryStateCommand.ClientName);
Conferences.Add(conference.Id, conference);
}
else
{
Conferences.TryGetValue(queryStateCommand.ConferenceId, out conference);
}
if (conference != null)
{
queryStateCommand.SenderConnection.ConnectionStateChangedEvent += (sender, args) =>
{
if (args.Value)
{
return;
}
var disconnectCommand = new DisconnectCommand
{
SenderConnection = queryStateCommand.SenderConnection
};
Queue.Enqueue(disconnectCommand);
};
Connections.Add((ServerWebSocketConnection)queryStateCommand.SenderConnection, conference.Id);
conference.AddConnection((ServerWebSocketConnection)queryStateCommand.SenderConnection, queryStateCommand.ClientName);
((ServerWebSocketConnection)queryStateCommand.SenderConnection).SendState(conference.Id, ((ServerWebSocketConnection)queryStateCommand.SenderConnection).Id,
command.SenderConnection == conference.PresenterConnection, conference.Bitmap.Size.Width, conference.Bitmap.Size.Height);
BroadcastParticipantsCommand(conference);
}
else
{
((ServerWebSocketConnection)queryStateCommand.SenderConnection).SendState(string.Empty, string.Empty, false, 0, 0);
return;
}
if (command.SenderConnection != conference.PresenterConnection)
{
var quality = DiffContainer.Quality;
//Отсылаем последний вариант картинки
var data = DiffContainer.Split(
new KeyValuePair <Rectangle, Bitmap>(
new Rectangle(0, 0, conference.Bitmap.Size.Width, conference.Bitmap.Size.Height), conference.Bitmap), 50000, quality);
foreach (var d in data)
{
((ServerWebSocketConnection)queryStateCommand.SenderConnection).SendDiff(conference.Id, new DiffItem(d, quality));
}
}
}
else if (command is DiffCommand)
{
var diffCommand = command as DiffCommand;
Conference conference;
Conferences.TryGetValue(diffCommand.ConferenceId, out conference);
if (conference == null)
{
return;
}
conference.Graphics.DrawImage(DiffContainer.ByteArrayToImage(diffCommand.DiffItem.ImageBytes),
diffCommand.DiffItem.X, diffCommand.DiffItem.Y,
diffCommand.DiffItem.Width, diffCommand.DiffItem.Height);
foreach (var connection in conference.Connections)
{
if (connection == conference.PresenterConnection)
{
continue;
}
connection.SendDiff(conference.Id, diffCommand.DiffItem);
}
}
else if (command is DisconnectCommand)
{
var disconnectCommand = command as DisconnectCommand;
string conferenceId =
Connections[((ServerWebSocketConnection)disconnectCommand.SenderConnection)];
Connections.Remove(((ServerWebSocketConnection)disconnectCommand.SenderConnection));
Conference conference;
Conferences.TryGetValue(conferenceId, out conference);
if (conference != null)
{
conference.RemoveConnection(((ServerWebSocketConnection)disconnectCommand.SenderConnection));
BroadcastParticipantsCommand(conference);
if (conference.Connections.Count == 0 || conference.PresenterConnection == null)
{
Conferences.Remove(conferenceId);
}
}
}
else if (command is PaintAddFigureCommand)
{
var addFigureCommand = command as PaintAddFigureCommand;
Conference conference = Conferences[addFigureCommand.ConferenceId];
if (conference == null)
{
return;
}
foreach (var connection in conference.Connections)
{
if (command.SenderConnection != connection)
{
connection.PaintAddFigureCommand(conference.Id, addFigureCommand.FigureId, addFigureCommand.Points, addFigureCommand.Color);
}
}
}
else if (command is PaintDeleteFigureCommand)
{
var deleteFigureCommand = command as PaintDeleteFigureCommand;
Conference conference = Conferences[deleteFigureCommand.ConferenceId];
if (conference == null)
{
return;
}
foreach (var connection in conference.Connections)
{
if (command.SenderConnection != connection)
{
connection.PaintDeleteFigureCommand(conference.Id, deleteFigureCommand.FigureId);
}
}
}
else if (command is InputCommand)
{
var connection = (ServerWebSocketConnection)command.SenderConnection;
InputCommand inputCommand = command as InputCommand;
Conference conference = Conferences[inputCommand.ConferenceId];
if (conference == null)
{
return;
}
bool isAllowed = PresenterToControllingClient.ContainsKey(conference.PresenterConnection.Id) &&
PresenterToControllingClient[conference.PresenterConnection.Id].Equals(connection.Id);
if (!isAllowed)
{
return;
}
conference.PresenterConnection.SendInput(conference.Id, inputCommand.MouseInput);
}
else if (command is ControlAccessCommand)
{
var controlAccessCommand = command as ControlAccessCommand;
Conference conference = Conferences[controlAccessCommand.ConferenceId];
if (conference == null)
{
return;
}
if (controlAccessCommand.PresenterId.Equals("0"))
{
controlAccessCommand.PresenterId = conference.PresenterConnection.Id;
}
var isAllowed = controlAccessCommand.IsAllowed;
var presenterId = controlAccessCommand.PresenterId;
var conferenceId = controlAccessCommand.ConferenceId;
var clientId = controlAccessCommand.ClientId;
if (!isAllowed)
{
if (PresenterToControllingClient.ContainsKey(presenterId) && PresenterToControllingClient[presenterId].Equals(clientId))
{
PresenterToControllingClient.Remove(presenterId);
}
}
if (PresenterToControllingClient.ContainsKey(presenterId))
{
var controllingClientId = PresenterToControllingClient[presenterId];
foreach (var connection in conference.Connections)
{
connection.ChangeControlAccess(conferenceId, presenterId, controllingClientId, false);
}
PresenterToControllingClient.Remove(presenterId);
}
if (isAllowed)
{
PresenterToControllingClient[presenterId] = clientId;
}
foreach (var connection in conference.Connections)
{
connection.ChangeControlAccess(conferenceId, presenterId, clientId, isAllowed);
}
var senderConnection = conference.Connections.FirstOrDefault(c => c.Id.Equals(controlAccessCommand.ClientId));
if (senderConnection == null)
{
return;
}
var clientConnection =
conference.Connections.FirstOrDefault(c => c.Id.Equals(controlAccessCommand.ClientId));
if (clientConnection == null)
{
return;
}
clientConnection.IsInputController = controlAccessCommand.IsAllowed;
}
else if (command is RequestControlCommand)
{
var senderConnection = (ServerWebSocketConnection)command.SenderConnection;
var requestControlCommand = command as RequestControlCommand;
Conference conference = Conferences[requestControlCommand.ConferenceId];
if (conference == null)
{
return;
}
foreach (var connection in conference.Connections)
{
connection.RequestControl(requestControlCommand.ConferenceId, senderConnection.Id, requestControlCommand.IsAllowed);
}
}
}
}
public void StartDiffDetectThread()
{
_runDiffDetectThread = false;
if (_diffDetectThread != null)
{
while (_diffDetectThread.IsAlive)
{
Thread.Sleep(100);
}
}
_runDiffDetectThread = true;
_diffDetectThread = new Thread(() =>
{
IDiffDetector diffDetector = new CustomDiffDetector(JpegQuality);
//IDiffDetector _diffDetector = new DiffDetector();
//IDiffDetector _diffDetector = new DiffDetectorOpenCvSharp();
while (_runDiffDetectThread)
{
try
{
var screenShot = new Bitmap(Screen.PrimaryScreen.Bounds.Width,
Screen.PrimaryScreen.Bounds.Height);
using (Graphics screenShotGraphics = Graphics.FromImage(screenShot))
{
screenShotGraphics.CopyFromScreen(0, 0, 0, 0,
new Size(
Screen.PrimaryScreen.Bounds.Width,
Screen.PrimaryScreen.Bounds.Height));
if (Math.Abs(ScreenshotScale - 1) > 0.01)
{
screenShot = new Bitmap(screenShot,
(int)
(Screen.PrimaryScreen.Bounds.Width * ScreenshotScale),
(int)
(Screen.PrimaryScreen.Bounds.Height * ScreenshotScale));
}
}
DiffContainer diffContainer = diffDetector.GetDiffs(screenShot);
var quality = DiffContainer.Quality;
diffContainer.Data = DiffContainer.Split(diffContainer.Data, 64000, quality);
foreach (var s in diffContainer.Data)
{
ClientWebSocketConnection.SendDiff(ConferenceId, new DiffItem(s, quality));
}
}
catch (Exception ex)
{
Console.WriteLine("_diffDetectThread : " + ex.Message);
}
Thread.Sleep(_delay);
}
});
_diffDetectThread.Start();
}