/// <summary>
/// Creates a new Camera from a Device.
/// </summary>
/// <param name="device">The device </param>
/// <returns>The newly created Camera</returns>
/// <exception cref="ArgumentNullException">The Device supplied is null</exception>
/// <exception cref="DeviceNotFound"></exception>
public static Camera Create(this Device device)
{
if (null == device)
throw new ArgumentNullException();
if (!device.IsPoweredOn)
throw new ArgumentException("The device is not powered on");
lock (deviceLock)
{
// The SpotCam service only allows one camera at a time to be controlled.
if (currentCamera != null)
currentCamera.HandleDisconnection(DisconnectionReason.ForcedByService);
currentCamera = null;
currentCamera = new Camera(device);
return currentCamera;
}
}
public static void Reconnect(Camera camera)
{
if (null == camera)
throw new ArgumentNullException();
lock (deviceLock)
{
ulong devUid = camera.DeviceUid;
unsafe
{
var serviceException = SpotCamService.MakeException(SpotCamService.SpotSetValue(CoreParameter.DeviceUid, new IntPtr(&devUid)));
if (serviceException != null)
throw new InvalidOperationException("Unable to set the device identifier", serviceException);
}
SpotCamService.MakeException(SpotCamService.SpotInit()).ThrowIfNotNull();
currentCamera = camera;
}
camera.HandleConnection();
}
/// <summary>
/// Shuts down the factory. Initialize must be called again to restart the factory.
/// </summary>
public static void Shutdown()
{
System.Diagnostics.Debug.Assert(SpotCamReturnCode.Success == SpotCamService.SpotShutDown());
currentCamera = null;
}
