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using System;
using System.Collections.Generic;
using System.Configuration;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading;
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 Microsoft.AspNet.SignalR.Client;
using PTZ;
using Microsoft.AspNet.SignalR.Client.Hubs;
namespace PTZRemoteCameraListener
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
public MainWindow()
HubConnection connection = null;
IHubProxy proxy = null;
PTZDevice device;
string remoteGroup;
string url;
SynchronizationContext magic;
private async void MainWindow_Loaded(object sender, RoutedEventArgs e)
var deviceName = ConfigurationManager.AppSettings["DeviceName"];
device = PTZDevice.GetDevice(deviceName, PTZType.Relative);
url = ConfigurationManager.AppSettings["relayServerUrl"];
remoteGroup = Environment.MachineName; //They have to hardcode the group, but for us it's our machine name
connection = new HubConnection(url);
proxy = connection.CreateHubProxy("RelayHub");
connection.TraceLevel = TraceLevels.StateChanges | TraceLevels.Events;
connection.TraceWriter = new PTZRemoteTraceWriter(Log);
//Can't do this here because DirectShow has to be on the UI thread!
// This would cause an obscure COM casting error with no clue what's up. So, um, ya.
//proxy.On<int, int>("Move",(x,y) => device.Move(x, y));
//proxy.On<int>("Zoom", (z) => device.Zoom(z));
magic = SynchronizationContext.Current;
proxy.On<int, int>("Move", (x, y) =>
//Toss this over the fence from this background thread to the UI thread
magic.Post((_) => {
Log(String.Format("Move({0},{1})", x,y));
device.Move(x, y);
}, null);
proxy.On<int>("Zoom", (z) =>
magic.Post((_) =>
Log(String.Format("Zoom({0})", z));
}, null);
await connection.Start();
Log("After connection.Start()");
await proxy.Invoke("JoinRelay", remoteGroup);
Log("After JoinRelay");
catch (Exception pants)
public void Log(string messsage)
magic.Post((_) =>
TextLog.Inlines.Add(new LineBreak());
TextLog.Inlines.Add(new Run(messsage));
}, null);