private static bool CreateDeviceContext(IStreamEngineInterop interop, string url, Interop.tobii_field_of_use_t fieldOfUse, IntPtr apiContext, string[] licenseKeys, out IntPtr deviceContext)
{
if (licenseKeys == null || licenseKeys.Length == 0)
{
return(interop.tobii_device_create(apiContext, url, fieldOfUse, out deviceContext) == tobii_error_t.TOBII_ERROR_NO_ERROR);
}
var licenseResults = new List <tobii_license_validation_result_t>();
var result = interop.tobii_device_create_ex(apiContext, url, fieldOfUse, licenseKeys, licenseResults, out deviceContext);
if (result != tobii_error_t.TOBII_ERROR_NO_ERROR)
{
UnityEngine.Debug.LogError(string.Format("Failed to create device context for {0}. {1}", url, result));
return(false);
}
for (int i = 0; i < licenseKeys.Length; i++)
{
var licenseResult = licenseResults[i];
if (licenseResult == tobii_license_validation_result_t.TOBII_LICENSE_VALIDATION_RESULT_OK)
{
continue;
}
UnityEngine.Debug.LogError("License " + licenseKeys[i] + " failed. Return code " + licenseResult);
}
return(true);
}
public StreamEngineConnection(IStreamEngineInterop interop)
{
_interop = interop;
_customLog = new tobii_custom_log_t {
log_func = LogCallback
};
}
public static void Disconnect(IStreamEngineInterop interop, StreamEngineContext context)
{
if (context == null)
{
return;
}
DestroyDeviceContext(interop, context.Device);
DestroyApiContext(interop, context.Api);
}
public static bool TryReconnect(IStreamEngineInterop interop, IntPtr deviceContext)
{
var result = interop.tobii_device_reconnect(deviceContext);
if (result != tobii_error_t.TOBII_ERROR_NO_ERROR)
{
return(false);
}
UnityEngine.Debug.Log("Reconnected.");
return(true);
}
private static bool ReconnectToDevice(IStreamEngineInterop interop, IntPtr deviceContext)
{
var nativeContext = deviceContext;
var result = interop.tobii_device_reconnect(nativeContext);
if (result != tobii_error_t.TOBII_ERROR_NO_ERROR)
{
return(false);
}
UnityEngine.Debug.Log("Reconnected.");
return(true);
}
private static bool CreateApiContext(IStreamEngineInterop interop, out IntPtr apiContext, tobii_custom_log_t customLog = null)
{
var result = interop.tobii_api_create(out apiContext, customLog);
if (result == tobii_error_t.TOBII_ERROR_NO_ERROR)
{
return(true);
}
UnityEngine.Debug.LogError("Failed to create api context. " + result);
apiContext = IntPtr.Zero;
return(false);
}
private static void DestroyApiContext(IStreamEngineInterop interop, IntPtr apiContext)
{
if (apiContext == IntPtr.Zero)
{
return;
}
var result = interop.tobii_api_destroy(apiContext);
if (result != tobii_error_t.TOBII_ERROR_NO_ERROR)
{
UnityEngine.Debug.LogError(string.Format("Failed to destroy api context. Error {0}", result));
}
}
private static bool GetFirstSupportedTracker(IStreamEngineInterop interop, IntPtr apiContext, IList <string> connectedDevices, StreamEngineTracker_Description description, out IntPtr deviceContext, out string deviceUrl)
{
var index = -1;
deviceContext = IntPtr.Zero;
deviceUrl = "";
for (var i = 0; i < connectedDevices.Count; i++)
{
var connectedDeviceUrl = connectedDevices[i];
// TODO: Use field of use from facade
if (CreateDeviceContext(interop, connectedDeviceUrl, Interop.tobii_field_of_use_t.TOBII_FIELD_OF_USE_INTERACTIVE, apiContext, description.License, out deviceContext) == false)
{
return(false);
}
tobii_device_info_t info;
var result = interop.tobii_get_device_info(deviceContext, out info);
if (result != tobii_error_t.TOBII_ERROR_NO_ERROR)
{
DestroyDeviceContext(interop, deviceContext);
UnityEngine.Debug.LogWarning("Failed to get device info. " + result);
return(false);
}
var integrationType = info.integration_type.ToLowerInvariant();
if (integrationType != description.SupportedIntegrationType)
{
DestroyDeviceContext(interop, deviceContext);
continue;
}
index = i;
deviceUrl = connectedDeviceUrl;
break;
}
if (index != -1)
{
return(true);
}
UnityEngine.Debug.LogWarning(string.Format("Failed to find Tobii eye trackers of integration type {0}", description.SupportedIntegrationType));
DestroyDeviceContext(interop, deviceContext);
return(false);
}
private static bool GetAvailableTrackers(IStreamEngineInterop interop, IntPtr apiContext, out List <string> connectedDevices)
{
var result = interop.tobii_enumerate_local_device_urls(apiContext, out connectedDevices);
if (result != tobii_error_t.TOBII_ERROR_NO_ERROR)
{
UnityEngine.Debug.LogError("Failed to enumerate connected devices. " + result);
return(false);
}
if (connectedDevices.Count >= 1)
{
return(true);
}
UnityEngine.Debug.LogWarning("No connected eye trackers found.");
return(false);
}
public static bool TryConnect(IStreamEngineInterop interop, StreamEngineTracker_Description description, out StreamEngineContext context, tobii_custom_log_t customLog = null)
{
_stopwatch.Reset();
_stopwatch.Start();
context = null;
IntPtr apiContext;
if (CreateApiContext(interop, out apiContext, customLog) == false)
{
return(false);
}
try
{
List <string> connectedDevices;
if (GetAvailableTrackers(interop, apiContext, out connectedDevices) == false)
{
DestroyApiContext(interop, apiContext);
return(false);
}
IntPtr deviceContext;
string hmdEyeTrackerUrl;
if (GetFirstSupportedTracker(interop, apiContext, connectedDevices, description, out deviceContext, out hmdEyeTrackerUrl) == false)
{
DestroyApiContext(interop, apiContext);
return(false);
}
context = new StreamEngineContext(apiContext, deviceContext, hmdEyeTrackerUrl);
_stopwatch.Stop();
UnityEngine.Debug.Log(string.Format("Connected to SE tracker: {0} and it took {1}ms",
context.Url, _stopwatch.ElapsedMilliseconds));
return(true);
}
catch (Exception e)
{
UnityEngine.Debug.LogError("Error connecting to eye tracker: " + e.ToString());
return(false);
}
}
private static bool GetAvailableTrackers(IStreamEngineInterop interop, IntPtr apiContext, out List <string> connectedDevices)
{
connectedDevices = new List <string>();
GCHandle gch = GCHandle.Alloc(connectedDevices);
var result = interop.tobii_enumerate_local_device_urls_internal(apiContext, _deviceUrlReceiver, GCHandle.ToIntPtr(gch));
if (result != tobii_error_t.TOBII_ERROR_NO_ERROR)
{
UnityEngine.Debug.LogError("Failed to enumerate connected devices. " + result);
return(false);
}
if (connectedDevices.Count >= 1)
{
return(true);
}
UnityEngine.Debug.LogWarning("No connected eye trackers found.");
return(false);
}
public StreamEngineConnection(IStreamEngineInterop interop)
{
_interop = interop;
}
