public StreamEngineTracker(StreamEngineTracker_Description description = null, StreamEngineConnection connection = null)
{
if (description == null)
{
description = new StreamEngineTracker_Description();
}
if (connection == null)
{
connection = new StreamEngineConnection(new InteropWrapper());
}
LocalLatestData = new TobiiXR_EyeTrackingData();
_connection = connection;
if (TryConnectToTracker(_connection, _stopwatch, description) == false)
{
throw new Exception("Failed to connect to tracker");
}
_wearableDataCallback = OnWearableData;
if (SubscribeToWearableData(_connection.Context.Device, _wearableDataCallback) == false)
{
throw new Exception("Failed to subscribe to tracker");
}
CheckForCapabilities(_connection.Context.Device);
}
internal TobiiTrackerBase(ApiContext api, bool isWearable)
{
_device = api
.GetDeviceUrls()
.Select(u => new DeviceContext(api.Handle, u))
.FirstOrDefault(d => d.IsWearable == isWearable);
if (_device != null)
{
if (isWearable)
{
var result = Interop.tobii_stream_supported(_device.Handle, tobii_stream_t.TOBII_STREAM_WEARABLE, out var wearableSupported);
if (result == tobii_error_t.TOBII_ERROR_NO_ERROR && wearableSupported)
{
_wearableCallbackInstance = WearableCallback;
result = Interop.tobii_wearable_data_subscribe(_device.Handle, _wearableCallbackInstance);
}
}
else
{
var result = Interop.tobii_stream_supported(_device.Handle, tobii_stream_t.TOBII_STREAM_GAZE_POINT, out var gazePointSupported);
if (result == tobii_error_t.TOBII_ERROR_NO_ERROR && gazePointSupported)
{
_gazePointCallbackInstance = GazePointCallback;
result = Interop.tobii_gaze_point_subscribe(_device.Handle, _gazePointCallbackInstance);
}
}
_thread = new Thread(DataPump);
_thread.IsBackground = true;
_thread.Name = $"Data pump for {_device.SerialNumber}";
_thread.Start();
}
}
private static bool SubscribeToWearableData(IntPtr context, tobii_wearable_data_callback_t wearableDataCallback)
{
var result = Interop.tobii_wearable_data_subscribe(context, wearableDataCallback);
if (result == tobii_error_t.TOBII_ERROR_NO_ERROR)
{
return(true);
}
UnityEngine.Debug.LogError("Failed to subscribe to wearable stream." + result);
return(false);
}
public StreamEngineTracker()
{
if (TryConnectToTracker(ref _streamEngineContext, _stopwatch) == false)
{
throw new Exception("Failed to connect to tracker");
}
_wearableDataCallback = OnWearableData;
if (SubscribeToWearableData(_streamEngineContext.Device, _wearableDataCallback) == false)
{
throw new Exception("Failed to subscribe to tracker");
}
LocalLatestData = new TobiiXR_EyeTrackingData();
}
public void Dispose()
{
_continue = false;
if (_gazePointCallbackInstance != null)
{
Interop.tobii_gaze_point_unsubscribe(_device.Handle);
}
if (_wearableCallbackInstance != null)
{
Interop.tobii_wearable_data_unsubscribe(_device.Handle);
}
_device.Dispose();
_thread.Join(300);
_gazePointCallbackInstance = null;
_wearableCallbackInstance = null;
}
public static extern tobii_error_t tobii_wearable_data_subscribe(IntPtr device, tobii_wearable_data_callback_t callback);
