async Task CloseSessionAsync(Guid backgroundId)
{
Debug.WriteLine("MediaPlayerHandle.CloseSession() " + backgroundId);
var mediaPlayerSession = _mediaPlayerSession;
if (null == mediaPlayerSession)
{
return;
}
using (await _asyncLock.LockAsync(CancellationToken.None))
{
if (!mediaPlayerSession.BackgroundId.HasValue || backgroundId != mediaPlayerSession.BackgroundId)
{
return;
}
if (ReferenceEquals(_mediaPlayerSession, mediaPlayerSession))
{
_mediaPlayerSession = null;
}
mediaPlayerSession.Dispose();
_subscriptionHandle.Unsubscribe();
}
}
async Task CloseSessionAsync(Guid backgroundId)
{
Debug.WriteLine("MediaPlayerHandle.CloseSession() " + backgroundId);
var mediaPlayerSession = _mediaPlayerSession;
if (null == mediaPlayerSession)
return;
using (await _asyncLock.LockAsync(CancellationToken.None))
{
if (!mediaPlayerSession.BackgroundId.HasValue || backgroundId != mediaPlayerSession.BackgroundId)
return;
if (ReferenceEquals(_mediaPlayerSession, mediaPlayerSession))
_mediaPlayerSession = null;
mediaPlayerSession.Dispose();
_subscriptionHandle.Unsubscribe();
}
}
public async Task <MediaPlayerSession> OpenAsync()
{
Debug.WriteLine("MediaPlayerHandle.OpenAsync()");
for (var shutdownRetry = 0; shutdownRetry < 2; ++shutdownRetry)
{
MediaPlayerSession mediaPlayerSession = null;
for (var retry = 0; retry < 3; ++retry)
{
using (await _asyncLock.LockAsync(CancellationToken.None).ConfigureAwait(false))
{
mediaPlayerSession = _mediaPlayerSession;
if (null != mediaPlayerSession)
{
return(mediaPlayerSession);
}
try
{
_subscriptionHandle.Subscribe();
var player = BackgroundMediaPlayer.Current;
Guid?backgroundId = null;
for (var loadRetry = 0; loadRetry < 4; ++loadRetry)
{
await Task.Delay(100 *(1 + loadRetry)).ConfigureAwait(false);
backgroundId = BackgroundSettings.BackgroundId;
if (backgroundId.HasValue)
{
break;
}
}
if (backgroundId.HasValue)
{
for (var sessionRetry = 0; sessionRetry < 4; ++sessionRetry)
{
mediaPlayerSession = new MediaPlayerSession(player, backgroundId.Value, _notifier, OnCurrentStateChanged);
_mediaPlayerSession = mediaPlayerSession;
if (await mediaPlayerSession.OpenAsync().ConfigureAwait(false))
{
return(mediaPlayerSession);
}
await Task.Delay(150 + 250 *sessionRetry).ConfigureAwait(false);
}
}
else
{
Debug.WriteLine("MediaPlayerHandle.OpenAsync() no BackgroundId");
}
}
catch (Exception ex)
{
Debug.WriteLine("MediaPlayerHandle.OpenAsync() failed: " + ex.ExtendedMessage());
}
_mediaPlayerSession = null;
_subscriptionHandle.Unsubscribe();
}
await Task.Delay(150 + 250 *retry).ConfigureAwait(false);
}
if (null != mediaPlayerSession)
{
mediaPlayerSession.Dispose();
}
Shutdown();
await Task.Delay(450 *(1 + shutdownRetry)).ConfigureAwait(false);
}
return(null);
}
public async Task<MediaPlayerSession> OpenAsync()
{
Debug.WriteLine("MediaPlayerHandle.OpenAsync()");
for (var shutdownRetry = 0; shutdownRetry < 2; ++shutdownRetry)
{
MediaPlayerSession mediaPlayerSession = null;
for (var retry = 0; retry < 3; ++retry)
{
using (await _asyncLock.LockAsync(CancellationToken.None).ConfigureAwait(false))
{
mediaPlayerSession = _mediaPlayerSession;
if (null != mediaPlayerSession)
return mediaPlayerSession;
try
{
_subscriptionHandle.Subscribe();
var player = BackgroundMediaPlayer.Current;
Guid? backgroundId = null;
for (var loadRetry = 0; loadRetry < 4; ++loadRetry)
{
await Task.Delay(100 * (1 + loadRetry)).ConfigureAwait(false);
backgroundId = BackgroundSettings.BackgroundId;
if (backgroundId.HasValue)
break;
}
if (backgroundId.HasValue)
{
for (var sessionRetry = 0; sessionRetry < 4; ++sessionRetry)
{
mediaPlayerSession = new MediaPlayerSession(player, backgroundId.Value, _notifier, OnCurrentStateChanged);
_mediaPlayerSession = mediaPlayerSession;
if (await mediaPlayerSession.OpenAsync().ConfigureAwait(false))
return mediaPlayerSession;
await Task.Delay(150 + 250 * sessionRetry).ConfigureAwait(false);
}
}
else
Debug.WriteLine("MediaPlayerHandle.OpenAsync() no BackgroundId");
}
catch (Exception ex)
{
Debug.WriteLine("MediaPlayerHandle.OpenAsync() failed: " + ex.ExtendedMessage());
}
_mediaPlayerSession = null;
_subscriptionHandle.Unsubscribe();
}
await Task.Delay(150 + 250 * retry).ConfigureAwait(false);
}
if (null != mediaPlayerSession)
mediaPlayerSession.Dispose();
Shutdown();
await Task.Delay(450 * (1 + shutdownRetry)).ConfigureAwait(false);
}
return null;
}
