fixes #555 - Have clients report seek and queuing capabilities

MediaBrowser.Server.Implementations/Dto/DtoService.cs

@@ -237,7 +237,9 @@ namespace MediaBrowser.Server.Implementations.Dto
                 NowViewingItemId = session.NowViewingItemId,
                 NowViewingItemName = session.NowViewingItemName,
                 NowViewingItemType = session.NowViewingItemType,
-                ApplicationVersion = session.ApplicationVersion
+                ApplicationVersion = session.ApplicationVersion,
+                CanSeek = session.CanSeek,
+                QueueableMediaTypes = session.QueueableMediaTypes
             };
 
             if (session.NowPlayingItem != null)

MediaBrowser.Server.Implementations/Library/LibraryManager.cs

@@ -829,10 +829,6 @@ namespace MediaBrowser.Server.Implementations.Library
         /// <returns>Task.</returns>
         public async Task ValidatePeople(CancellationToken cancellationToken, IProgress<double> progress)
         {
-            const int maxTasks = 3;
-
-            var tasks = new List<Task>();
-
             var people = RootFolder.RecursiveChildren
                 .SelectMany(c => c.People)
                 .DistinctBy(p => p.Name, StringComparer.OrdinalIgnoreCase)
@@ -842,47 +838,27 @@ namespace MediaBrowser.Server.Implementations.Library
 
             foreach (var person in people)
             {
-                if (tasks.Count > maxTasks)
-                {
-                    await Task.WhenAll(tasks).ConfigureAwait(false);
-                    tasks.Clear();
+                cancellationToken.ThrowIfCancellationRequested();
 
-                    // Safe cancellation point, when there are no pending tasks
-                    cancellationToken.ThrowIfCancellationRequested();
+                try
+                {
+                    var item = GetPerson(person.Name);
+
+                    await item.RefreshMetadata(cancellationToken).ConfigureAwait(false);
+                }
+                catch (IOException ex)
+                {
+                    _logger.ErrorException("Error validating IBN entry {0}", ex, person.Name);
                 }
 
-                // Avoid accessing the foreach variable within the closure
-                var currentPerson = person;
+                // Update progress
+                numComplete++;
+                double percent = numComplete;
+                percent /= people.Count;
 
-                tasks.Add(Task.Run(async () =>
-                {
-                    cancellationToken.ThrowIfCancellationRequested();
-
-                    try
-                    {
-                        var item = GetPerson(currentPerson.Name);
-
-                        await item.RefreshMetadata(cancellationToken).ConfigureAwait(false);
-                    }
-                    catch (IOException ex)
-                    {
-                        _logger.ErrorException("Error validating IBN entry {0}", ex, currentPerson.Name);
-                    }
-
-                    // Update progress
-                    lock (progress)
-                    {
-                        numComplete++;
-                        double percent = numComplete;
-                        percent /= people.Count;
-
-                        progress.Report(100 * percent);
-                    }
-                }));
+                progress.Report(100 * percent);
             }
 
-            await Task.WhenAll(tasks).ConfigureAwait(false);
-
             progress.Report(100);
 
             _logger.Info("People validation complete");
@@ -956,7 +932,9 @@ namespace MediaBrowser.Server.Implementations.Library
         public Task ValidateMediaLibrary(IProgress<double> progress, CancellationToken cancellationToken)
         {
             // Just run the scheduled task so that the user can see it
-            return Task.Run(() => _taskManager.CancelIfRunningAndQueue<RefreshMediaLibraryTask>());
+            _taskManager.CancelIfRunningAndQueue<RefreshMediaLibraryTask>();
+
+            return Task.FromResult(true);
         }
 
         /// <summary>

MediaBrowser.Server.Implementations/Library/Validators/PeoplePostScanTask.cs

@@ -41,7 +41,9 @@ namespace MediaBrowser.Server.Implementations.Library.Validators
         /// <returns>Task.</returns>
         public Task Run(IProgress<double> progress, CancellationToken cancellationToken)
         {
-            return Task.Run(() => RunInternal(progress, cancellationToken));
+            RunInternal(progress, cancellationToken);
+
+            return Task.FromResult(true);
         }
 
         private void RunInternal(IProgress<double> progress, CancellationToken cancellationToken)

MediaBrowser.Server.Implementations/Persistence/SqliteItemRepository.cs

@@ -333,17 +333,16 @@ namespace MediaBrowser.Server.Implementations.Persistence
         /// <returns>Task.</returns>
         public Task SaveCriticReviews(Guid itemId, IEnumerable<ItemReview> criticReviews)
         {
-            return Task.Run(() =>
+            if (!Directory.Exists(_criticReviewsPath))
             {
-                if (!Directory.Exists(_criticReviewsPath))
-                {
-                    Directory.CreateDirectory(_criticReviewsPath);
-                }
+                Directory.CreateDirectory(_criticReviewsPath);
+            }
 
-                var path = Path.Combine(_criticReviewsPath, itemId + ".json");
+            var path = Path.Combine(_criticReviewsPath, itemId + ".json");
 
-                _jsonSerializer.SerializeToFile(criticReviews.ToList(), path);
-            });
+            _jsonSerializer.SerializeToFile(criticReviews.ToList(), path);
+
+            return Task.FromResult(true);
         }
 
         /// <summary>

MediaBrowser.Server.Implementations/Session/SessionManager.cs

@@ -207,21 +207,29 @@ namespace MediaBrowser.Server.Implementations.Session
         /// <summary>
         /// Used to report that playback has started for an item
         /// </summary>
-        /// <param name="item">The item.</param>
-        /// <param name="sessionId">The session id.</param>
+        /// <param name="info">The info.</param>
         /// <returns>Task.</returns>
-        /// <exception cref="System.ArgumentNullException"></exception>
-        public async Task OnPlaybackStart(BaseItem item, Guid sessionId)
+        /// <exception cref="System.ArgumentNullException">info</exception>
+        public async Task OnPlaybackStart(PlaybackInfo info)
         {
-            if (item == null)
+            if (info == null)
             {
-                throw new ArgumentNullException();
+                throw new ArgumentNullException("info");
+            }
+            if (info.SessionId == Guid.Empty)
+            {
+                throw new ArgumentNullException("info");
             }
 
-            var session = Sessions.First(i => i.Id.Equals(sessionId));
+            var session = Sessions.First(i => i.Id.Equals(info.SessionId));
+
+            var item = info.Item;
 
             UpdateNowPlayingItem(session, item, false, false);
 
+            session.CanSeek = info.CanSeek;
+            session.QueueableMediaTypes = info.QueueableMediaTypes;
+
             var key = item.GetUserDataKey();
 
             var user = session.User;

MediaBrowser.Server.Implementations/Session/SessionWebSocketListener.cs

@@ -101,16 +101,7 @@ namespace MediaBrowser.Server.Implementations.Session
             }
             else if (string.Equals(message.MessageType, "PlaybackStart", StringComparison.OrdinalIgnoreCase))
             {
-                _logger.Debug("Received PlaybackStart message");
-                
-                var session = _sessionManager.Sessions.FirstOrDefault(i => i.WebSockets.Contains(message.Connection));
-
-                if (session != null && session.User != null)
-                {
-                    var item = _dtoService.GetItemByDtoId(message.Data);
-
-                    _sessionManager.OnPlaybackStart(item, session.Id);
-                }
+                ReportPlaybackStart(message);
             }
             else if (string.Equals(message.MessageType, "PlaybackProgress", StringComparison.OrdinalIgnoreCase))
             {
@@ -170,5 +161,46 @@ namespace MediaBrowser.Server.Implementations.Session
 
             return _trueTaskResult;
         }
+
+        /// <summary>
+        /// Reports the playback start.
+        /// </summary>
+        /// <param name="message">The message.</param>
+        private void ReportPlaybackStart(WebSocketMessageInfo message)
+        {
+            _logger.Debug("Received PlaybackStart message");
+            
+            var session = _sessionManager.Sessions
+                .FirstOrDefault(i => i.WebSockets.Contains(message.Connection));
+
+            if (session != null && session.User != null)
+            {
+                var vals = message.Data.Split('|');
+
+                var item = _dtoService.GetItemByDtoId(vals[0]);
+
+                var queueableMediaTypes = string.Empty;
+                var canSeek = true;
+
+                if (vals.Length > 1)
+                {
+                    canSeek = string.Equals(vals[1], "true", StringComparison.OrdinalIgnoreCase);
+                }
+                if (vals.Length > 2)
+                {
+                    queueableMediaTypes = vals[2];
+                }
+  
+                var info = new PlaybackInfo
+                {
+                    CanSeek = canSeek,
+                    Item = item,
+                    SessionId = session.Id,
+                    QueueableMediaTypes = queueableMediaTypes.Split(',').ToList()
+                };
+
+                _sessionManager.OnPlaybackStart(info);
+            }
+        }
     }
 }

MediaBrowser.Server.Implementations/WebSocket/AlchemyWebSocket.cs

@@ -92,7 +92,9 @@ namespace MediaBrowser.Server.Implementations.WebSocket
         /// <returns>Task.</returns>
         public Task SendAsync(byte[] bytes, WebSocketMessageType type, bool endOfMessage, CancellationToken cancellationToken)
         {
-            return Task.Run(() => UserContext.Send(bytes));
+            UserContext.Send(bytes);
+
+            return Task.FromResult(true);
         }
 
         /// <summary>