public AudioMetadataHandler(CancellationToken cancellationToken)
{
_updateTask = new SignalTask(Update, cancellationToken);
_metadataSink = new ActionMetadataSink(_updateTask.Fire);
_timer = new Timer(obj => ((AudioMetadataHandler)obj).Refresh(), this, Timeout.Infinite, Timeout.Infinite);
}
public MetadataHandler(SystemMediaTransportControls systemMediaTransportControls, ForegroundNotifier notifier, Func<TimeSpan> getPosition, Action<TimeSpan> reportNextEvent, CancellationToken cancellationToken)
{
if (null == systemMediaTransportControls)
throw new ArgumentNullException(nameof(systemMediaTransportControls));
if (null == notifier)
throw new ArgumentNullException(nameof(notifier));
if (null == getPosition)
throw new ArgumentNullException(nameof(getPosition));
if (null == reportNextEvent)
throw new ArgumentNullException(nameof(reportNextEvent));
_systemMediaTransportControls = systemMediaTransportControls;
_notifier = notifier;
_getPosition = getPosition;
_reportNextEvent = reportNextEvent;
_updateTask = new SignalTask(Update, cancellationToken);
_metadataSink = new ActionMetadataSink(_updateTask.Fire);
}