public override async void Initialize()
{
if (QRCodeWatcher.IsSupported())
{
#if WINDOWS_UWP
try
{
var capture = new Windows.Media.Capture.MediaCapture();
await capture.InitializeAsync();
Debug.Log("Camera and Microphone permissions OK");
}
catch (UnauthorizedAccessException)
{
Debug.LogError("Camera and microphone permissions not granted.");
return;
}
#endif
if (await QRCodeWatcher.RequestAccessAsync() == QRCodeWatcherAccessStatus.Allowed)
{
_qrWatcher = new QRCodeWatcher();;
_qrWatcher.Added += OnQRCodeAddedEvent;
_qrWatcher.Updated += OnQRCodeUpdatedEvent;
_qrWatcher.Removed += OnQRCodeRemovedEvent;
_qrWatcher.EnumerationCompleted += OnQREnumerationEnded;
}
}
}
async protected virtual void Start()
{
IsSupported = QRCodeWatcher.IsSupported();
capabilityTask = QRCodeWatcher.RequestAccessAsync();
accessStatus = await capabilityTask;
capabilityInitialized = true;
}
async void Start()
{
IsSupported = QRCodeWatcher.IsSupported();
await QRCodeWatcher.RequestAccessAsync();
qRCodeWatcher = new QRCodeWatcher();
qRCodeWatcher.Added += QRCodeWatcher_Added;
qRCodeWatcher.Updated += QRCodeWatcher_Updated;
qRCodeWatcher.Removed += QRCodeWatcher_Removed;
IsReady.Value = true;
this.UpdateAsObservable()
.Subscribe(_ =>
{
if (pendingActions.TryDequeue(out var action))
{
if (action.Type == ActionData.EventType.Added ||
action.Type == ActionData.EventType.Updated)
{
if (DateTimeOffset.Compare(StartTime, action.QRCode.LastDetectedTime) < 0)
{
onScanned.OnNext(action.QRCode);
}
}
}
})
.AddTo(this);
}
/// Initialization is just a matter of asking for permission, and then
/// hooking up to the `QRCodeWatcher`'s events. `QRCodeWatcher.RequestAccessAsync`
/// is an async call, so you could re-arrange this code to be non-blocking!
///
/// You'll also notice there's some code here for filtering out QR codes.
/// The default behavior for the QR code library is to provide all QR
/// codes that it knows about, and that includes ones that were found
/// before the session began. We don't need that, so we're ignoring those.
public void Initialize()
{
// Ask for permission to use the QR code tracking system
var status = QRCodeWatcher.RequestAccessAsync().Result;
if (status != QRCodeWatcherAccessStatus.Allowed)
{
return;
}
// Set up the watcher, and listen for QR code events.
watcherStart = DateTime.Now;
watcher = new QRCodeWatcher();
watcher.Added += (o, qr) => {
// QRCodeWatcher will provide QR codes from before session start,
// so we often want to filter those out.
if (qr.Code.LastDetectedTime > watcherStart)
{
poses.Add(qr.Code.Id, QRData.FromCode(qr.Code));
}
};
watcher.Updated += (o, qr) => poses[qr.Code.Id] = QRData.FromCode(qr.Code);
watcher.Removed += (o, qr) => poses.Remove(qr.Code.Id);
watcher.Start();
}
// Use this for initialization
protected virtual void Start()
{
IsSupported = QRCodeWatcher.IsSupported();
#if !UNITY_EDITOR
RequestCapability();
#endif
}
/// <summary>
/// Record whether the QRCodeWatcher reports itself as supported, and request access.
/// </summary>
private async void Start()
{
_isSupported = QRCodeWatcher.IsSupported();
_capabilityTask = QRCodeWatcher.RequestAccessAsync();
_accessStatus = await _capabilityTask;
_capabilityInitialized = true;
SimpleConsole.AddLine(log, $"Requested caps, access: {_accessStatus.ToString()}");
}
/// <summary>
/// Record whether the QRCodeWatcher reports itself as supported, and request access.
/// </summary>
private async void Start()
{
isSupported = QRCodeWatcher.IsSupported();
var capabilityTask = QRCodeWatcher.RequestAccessAsync();
accessStatus = await capabilityTask;
SimpleConsole.AddLine(log, $"Requested caps, access: {accessStatus.ToString()}");
}
private void SetupTracking()
{
qrTracker = new QRCodeWatcher();
qrTracker.Updated += QRCodeWatcher_Updated;
IsInitialized = true;
Initialized?.Invoke(this, new EventArgs());
SendProgressMessage("QR tracker initialized");
}
// Use this for initialization
async protected virtual void Start()
{
IsSupported = QRCodeWatcher.IsSupported();
capabilityTask = QRCodeWatcher.RequestAccessAsync();
accessStatus = await capabilityTask;
capabilityInitialized = true;
//AROA EDIT
//qrCodesList.Clear();//Clear list on initialization
}
async private void RequestCapability()
{
// Windows.Security.Authorization.AppCapabilityAccess.AppCapability cap = Windows.Security.Authorization.AppCapabilityAccess.AppCapability.Create("webcam");
// accessStatus = await cap.RequestAccessAsync();
accessStatus = await QRCodeWatcher.RequestAccessAsync();
capabilityInitialized = true;
}
/// <summary>
/// Deregister from the QRCodeWatcher and shut down the instance.
/// </summary>
private void TearDownQRWatcher()
{
if (qrWatcher != null)
{
qrWatcher.Stop();
qrWatcher.Added -= OnQRCodeAddedEvent;
qrWatcher.Updated -= OnQRCodeUpdatedEvent;
qrWatcher.Removed -= OnQRCodeRemovedEvent;
qrWatcher.EnumerationCompleted -= OnQREnumerationEnded;
qrWatcher = null;
}
}
/// <summary>
/// Record whether the QRCodeWatcher reports itself as supported, and request access.
/// </summary>
/// <remarks>
/// If the camera permission has not already been granted (GetPermissions has successfully completed),
/// then the call to QRCodeWather.RequestAccessAsync will never return, even after the user grants permissions.
/// See https://github.com/microsoft/MixedReality-WorldLockingTools-Samples/issues/20
/// </remarks>
private async void Start()
{
isSupported = QRCodeWatcher.IsSupported();
SimpleConsole.AddLine(log, $"QRCodeWatcher.IsSupported={isSupported}");
bool gotPermission = await GetPermissions();
if (gotPermission)
{
var capabilityTask = QRCodeWatcher.RequestAccessAsync();
accessStatus = await capabilityTask;
SimpleConsole.AddLine(log, $"Requested caps, access: {accessStatus.ToString()}");
}
}
private async void GetAccessStatus()
{
if (IsSupported && (!_capabilityInitialized || _accessStatus != QRCodeWatcherAccessStatus.Allowed))
{
if (_currentTime <= _maxTime)
{
_currentTime += Time.deltaTime;
return;
}
_currentTime = 0;
_capabilityTask = QRCodeWatcher.RequestAccessAsync();
_accessStatus = await _capabilityTask;
_capabilityInitialized = true;
}
}
/// <summary>
/// Create the QRCodeWatcher instance and register for the events to be transported to the main thread.
/// </summary>
private void SetUpQRWatcher()
{
try
{
qrWatcher = new QRCodeWatcher();
qrWatcher.Added += OnQRCodeAddedEvent;
qrWatcher.Updated += OnQRCodeUpdatedEvent;
qrWatcher.Removed += OnQRCodeRemovedEvent;
qrWatcher.EnumerationCompleted += OnQREnumerationEnded;
qrWatcher.Start();
}
catch (System.Exception e)
{
Debug.LogError($"Failed to start QRCodeWatcher, error: {e.Message}");
}
SimpleConsole.AddLine(log, $"SetUpQRWatcher {(qrWatcher != null ? "Success" : "Failed")}");
}
private void SetupQRTracking()
{
try
{
qrTracker = new QRCodeWatcher();
IsTrackerRunning = false;
qrTracker.Added += QRCodeWatcher_Added;
qrTracker.Updated += QRCodeWatcher_Updated;
qrTracker.Removed += QRCodeWatcher_Removed;
qrTracker.EnumerationCompleted += QRCodeWatcher_EnumerationCompleted;
}
catch (Exception ex)
{
Debug.Log("QRCodesManager : exception starting the tracker " + ex.ToString());
}
if (AutoStartQRTracking)
{
StartQRTracking();
}
}
private async Task <QRCodeWatcherAccessStatus> StartQRWatchingAsyncImpl(CancellationToken token)
{
QRCodeWatcherAccessStatus accessStatus = QRCodeWatcherAccessStatus.DeniedBySystem;
#if WINDOWS_UWP
DebugLog("Requesting QRCodeWatcher capability");
accessStatus = await QRCodeWatcher.RequestAccessAsync();
if (accessStatus != QRCodeWatcherAccessStatus.Allowed)
{
DebugLog("Failed to obtain QRCodeWatcher capability. QR Codes will not be detected");
}
else
{
DebugLog("QRCodeWatcher capability granted.");
}
#endif
if (accessStatus == QRCodeWatcherAccessStatus.Allowed)
{
// Note: If the QRCodeWatcher is created prior to obtaining the QRCodeWatcher capability, initialization will fail.
if (qrWatcher == null)
{
DebugLog("Creating qr tracker");
qrWatcher = new QRCodeWatcher();
qrWatcher.Added += QRWatcherAdded;
qrWatcher.Updated += QRWatcherUpdated;
qrWatcher.Removed += QRWatcherRemoved;
}
if (!token.IsCancellationRequested &&
!IsWatcherRunning)
{
qrWatcher.Start();
IsWatcherRunning = true;
}
}
return(await Task.FromResult(accessStatus));
}
private async Task InitializeTracker()
{
try
{
IsSupported = QRCodeWatcher.IsSupported();
if (IsSupported)
{
SendProgressMessage($"Initializing QR tracker attempt {++initializationAttempt}");
var capabilityTask = QRCodeWatcher.RequestAccessAsync();
await capabilityTask.AwaitWithTimeout(profile.AccessRetryTime,
ProcessTrackerCapabilityReturned,
() => _ = InitializeTracker());
}
else
{
InitializationFail("QR tracking not supported");
}
}
catch (Exception ex)
{
InitializationFail($"QRCodeTrackingService initialization failed: {ex}");
}
}
