public void Run(IBackgroundTaskInstance taskInstance)
        {
            _settingsUtility = new SettingsUtility();

            _foregroundMessenger = new ForegroundMessenger();
            _smtcWrapper = new SmtcWrapper(BackgroundMediaPlayer.Current.SystemMediaTransportControls);
            _playerWrapper = new PlayerWrapper(_smtcWrapper, _foregroundMessenger, _settingsUtility);

            _settingsUtility.Write(ApplicationSettingsConstants.BackgroundTaskState,
                BackgroundTaskState.Running);

            // Send information to foreground that background task has been started if app is active
            if (_playerWrapper.ForegroundAppState != AppState.Suspended)
                MessageHelper.SendMessageToForeground(new BackgroundAudioTaskStartedMessage());

            // This must be retrieved prior to subscribing to events below which use it
            _deferral = taskInstance.GetDeferral();

            // Mark the background task as started to unblock SMTC Play operation (see related WaitOne on this signal)
            TaskStarted.Set();

            // Associate a cancellation and completed handlers with the background task.
            taskInstance.Task.Completed += TaskCompleted;
            // event may raise immediately before continung thread excecution so must be at the end
            taskInstance.Canceled += OnCanceled;
        }
        public void Run(IBackgroundTaskInstance taskInstance)
        {
            _settingsUtility = new SettingsUtility();

            _foregroundMessenger = new ForegroundMessenger();
            _smtcWrapper         = new SmtcWrapper(BackgroundMediaPlayer.Current.SystemMediaTransportControls);
            _playerWrapper       = new PlayerWrapper(_smtcWrapper, _foregroundMessenger, _settingsUtility);

            _settingsUtility.Write(ApplicationSettingsConstants.BackgroundTaskState,
                                   BackgroundTaskState.Running);

            // Send information to foreground that background task has been started if app is active
            if (_playerWrapper.ForegroundAppState != AppState.Suspended)
            {
                MessageHelper.SendMessageToForeground(new BackgroundAudioTaskStartedMessage());
            }

            // This must be retrieved prior to subscribing to events below which use it
            _deferral = taskInstance.GetDeferral();

            // Mark the background task as started to unblock SMTC Play operation (see related WaitOne on this signal)
            TaskStarted.Set();

            // Associate a cancellation and completed handlers with the background task.
            taskInstance.Task.Completed += TaskCompleted;
            // event may raise immediately before continung thread excecution so must be at the end
            taskInstance.Canceled += OnCanceled;
        }
Beispiel #3
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        public void Dispose()
        {
            // save state
            _settingsUtility.Write(ApplicationSettingsConstants.QueueId, CurrentQueue.Id);
            _settingsUtility.Write(ApplicationSettingsConstants.Position, BackgroundMediaPlayer.Current.Position);
            _settingsUtility.Write(ApplicationSettingsConstants.BackgroundTaskState, BackgroundTaskState.Canceled);
            _settingsUtility.Write(ApplicationSettingsConstants.AppState, _foregroundMessenger);

            UnsubscribeFromMessenger();
            UnsubscribeFromSmtc();

            _smtcWrapper = null;
            _foregroundMessenger = null;
        }
Beispiel #4
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        public void Dispose()
        {
            // save state
            _settingsUtility.Write(ApplicationSettingsConstants.QueueId, CurrentQueue.Id);
            _settingsUtility.Write(ApplicationSettingsConstants.Position, BackgroundMediaPlayer.Current.Position);
            _settingsUtility.Write(ApplicationSettingsConstants.BackgroundTaskState, BackgroundTaskState.Canceled);
            _settingsUtility.Write(ApplicationSettingsConstants.AppState, _foregroundMessenger);

            UnsubscribeFromMessenger();
            UnsubscribeFromSmtc();

            _smtcWrapper         = null;
            _foregroundMessenger = null;
        }
Beispiel #5
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        public PlayerWrapper(SmtcWrapper smtcWrapper, ForegroundMessenger foregroundMessenger,
            ISettingsUtility settingsUtility)
        {
            _smtcWrapper = smtcWrapper;
            _foregroundMessenger = foregroundMessenger;
            _settingsUtility = settingsUtility;

            SubscribeToMessenger();
            SubscribeToSmtc();

            // Add handlers for MediaPlayer
            BackgroundMediaPlayer.Current.CurrentStateChanged += Current_CurrentStateChanged;

            // Read persisted state of foreground app
            ForegroundAppState = _settingsUtility.Read(ApplicationSettingsConstants.AppState, AppState.Unknown);
        }
Beispiel #6
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        public PlayerWrapper(SmtcWrapper smtcWrapper, ForegroundMessenger foregroundMessenger,
                             ISettingsUtility settingsUtility)
        {
            _smtcWrapper         = smtcWrapper;
            _foregroundMessenger = foregroundMessenger;
            _settingsUtility     = settingsUtility;

            SubscribeToMessenger();
            SubscribeToSmtc();

            // Add handlers for MediaPlayer
            BackgroundMediaPlayer.Current.CurrentStateChanged += Current_CurrentStateChanged;

            // Read persisted state of foreground app
            ForegroundAppState = _settingsUtility.Read(ApplicationSettingsConstants.AppState, AppState.Unknown);
        }