public AtemDiscoveryService(int updatePeriod = 10000, bool debug = false)
{
_debug = debug;
_knownDevices = new Dictionary <string, AtemDeviceInfo>();
_mdns = new MulticastService();
_mdns.UseIpv4 = true;
_mdns.UseIpv6 = false;
_mdns.NetworkInterfaceDiscovered += (s, e) => SendQuery();
_mdns.AnswerReceived += (s, e) => AnswerReceived(e.Message);
_mdns.Start();
_updateTimer = new Timer(a => {
DateTime now = DateTime.Now;
lock (_knownDevices)
{
List <string> ids = _knownDevices.Keys.ToList();
foreach (string id in ids)
{
AtemDeviceInfo dev = _knownDevices[id];
// Remove if not seen in too long
if (dev != null && now.Subtract(dev.LastSeen).TotalMilliseconds > updatePeriod * 3)
{
_knownDevices.Remove(id);
OnDeviceLost?.Invoke(this, dev);
}
}
}
SendQuery();
}, null, updatePeriod, updatePeriod);
}
/// <summary>
/// controls the read thread
/// </summary>
public async void StartReadHIDReport()
{
var t = DoReadHIDReport(cts.Token);
try
{
await t;
}
catch (Exception ex)
{
// Do nothing if error
}
finally
{
this.DisconnectDevice();
OnDeviceLost?.Invoke(this, new EventArgs());
}
}
/// <summary>
/// Raises the on device lost.
/// </summary>
protected void RaiseOnDeviceLost()
{
OnDeviceLost?.Invoke(this, EventArgs.Empty);
}