public QRTrackerStartResult StartQRTracking()
{
if (qrTracker == null)
{
Debug.Log("Creating qr tracker");
qrTracker = new QRTracker();
qrTracker.Added += QrTracker_Added;
qrTracker.Updated += QrTracker_Updated;
qrTracker.Removed += QrTracker_Removed;
}
if (!IsTrackerRunning)
{
StartResult = (qrTracker.Start());
if (StartResult == QRTrackerStartResult.Success)
{
IsTrackerRunning = true;
QRCodesTrackingStateChanged?.Invoke(this, true);
}
else
{
Debug.LogWarning("Failed to start qr tracker: " + StartResult.ToString());
}
}
return(StartResult);
}
public QRTrackerStartResult StartQRTracking()
{
if (!IsTrackerRunning)
{
StartResult = (qrTracker.Start());
if (StartResult == QRTrackerStartResult.Success)
{
IsTrackerRunning = true;
}
}
return(StartResult);
}
private async Task <QRTrackerStartResult> StartQRTrackingAsyncImpl(CancellationToken token)
{
#if WINDOWS_UWP
DebugLog("Requesting webcam capability");
Windows.Security.Authorization.AppCapabilityAccess.AppCapability cap = Windows.Security.Authorization.AppCapabilityAccess.AppCapability.Create("webcam");
var accessTask = cap.RequestAccessAsync().AsTask();
var completedTask = await Task.WhenAny(accessTask, Task.Delay(-1, token));
var accessStatus = (accessTask == completedTask) ? accessTask.Result : Windows.Security.Authorization.AppCapabilityAccess.AppCapabilityAccessStatus.DeniedBySystem;
if (accessStatus != Windows.Security.Authorization.AppCapabilityAccess.AppCapabilityAccessStatus.Allowed)
{
DebugLog("Failed to obtain webcam capability for qr code tracking");
}
else
{
DebugLog("Webcam capability granted.");
}
#endif
// Note: If the QRTracker is created prior to obtaining the webcam capability, initialization will fail.
if (qrTracker == null)
{
DebugLog("Creating qr tracker");
qrTracker = new QRTracker();
qrTracker.Added += QrTracker_Added;
qrTracker.Updated += QrTracker_Updated;
qrTracker.Removed += QrTracker_Removed;
}
if (!token.IsCancellationRequested &&
!IsTrackerRunning)
{
StartResult = qrTracker.Start();
if (StartResult == QRTrackerStartResult.Success)
{
DebugLog("Successfully started qr tracker");
IsTrackerRunning = true;
}
else
{
Debug.LogWarning("Failed to start qr tracker: " + StartResult.ToString());
}
}
return(await Task.FromResult(StartResult));
}
public QRTrackerStartResult StartQRTracking()
{
if (qrTracker != null && !IsTrackerRunning)
{
int tries = 0;
do
{
Debug.Log("QRCodesManager starting qrtracker");
StartResult = (qrTracker.Start());
Debug.Log("QRCodesManager starting qrtracker result:" + StartResult);
if (StartResult == QRTrackerStartResult.DeviceNotConnected)
{
System.Threading.Thread.Sleep(500);
}
} while (++tries <= 3);
if (StartResult == QRTrackerStartResult.Success)
{
IsTrackerRunning = true;
var handlers = QRCodesTrackingStateChanged;
if (handlers != null)
{
handlers(this, true);
}
}
}
else
{
#if WINDOWS_UWP
if (accessStatus == Windows.Security.Authorization.AppCapabilityAccess.AppCapabilityAccessStatus.DeniedByUser ||
accessStatus == Windows.Security.Authorization.AppCapabilityAccess.AppCapabilityAccessStatus.DeniedBySystem)
{
StartResult = QRTrackerStartResult.AccessDenied;
Debug.Log("QRCodesManager starting qrtracker result:" + StartResult);
}
#endif
}
return(StartResult);
}
