update dlna music genres

Emby.Dlna/ContentDirectory/ControlHandler.cs

@@ -23,6 +23,7 @@ using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
 using System.Xml;
+using MediaBrowser.Controller.Entities.Audio;
 using MediaBrowser.Controller.MediaEncoding;
 using MediaBrowser.Model.Globalization;
 using MediaBrowser.Model.Xml;
@@ -492,29 +493,53 @@ namespace Emby.Dlna.ContentDirectory
                 return ApplyPaging(new QueryResult<ServerItem>(), startIndex, limit);
             }
 
-            var folder = (Folder)item;
-
-            var sortOrders = new List<string>();
-            if (!folder.IsPreSorted)
+            if (item is MusicGenre)
             {
-                sortOrders.Add(ItemSortBy.SortName);
+                return GetMusicGenreItems(item, null, user, sort, startIndex, limit);
             }
 
-            var queryResult = await folder.GetItems(new InternalItemsQuery
+            var folder = (Folder)item;
+
+            var query = new InternalItemsQuery
             {
                 Limit = limit,
                 StartIndex = startIndex,
-                SortBy = sortOrders.ToArray(),
-                SortOrder = sort.SortOrder,
                 User = user,
                 IsMissing = false,
-                PresetViews = new[] { CollectionType.Movies, CollectionType.TvShows, CollectionType.Music },
-                ExcludeItemTypes = new[] { typeof(Game).Name, typeof(Book).Name },
+                PresetViews = new[] {CollectionType.Movies, CollectionType.TvShows, CollectionType.Music},
+                ExcludeItemTypes = new[] {typeof (Game).Name, typeof (Book).Name},
                 IsPlaceHolder = false
+            };
+
+            SetSorting(query, sort, folder.IsPreSorted);
+
+            var queryResult = await folder.GetItems(query).ConfigureAwait(false);
+
+            return ToResult(queryResult);
+        }
+
+        private QueryResult<ServerItem> GetMusicGenreItems(BaseItem item, Guid? parentId, User user, SortCriteria sort, int? startIndex, int? limit)
+        {
+            var query = new InternalItemsQuery(user)
+            {
+                Recursive = true,
+                ParentId = parentId,
+                GenreIds = new[] {item.Id.ToString("N")},
+                IncludeItemTypes = new[] {typeof (MusicAlbum).Name},
+                Limit = limit,
+                StartIndex = startIndex
+            };
 
-            }).ConfigureAwait(false);
+            SetSorting(query, sort, false);
 
-            var serverItems = queryResult
+            var result = _libraryManager.GetItemsResult(query);
+
+            return ToResult(result);
+        }
+
+        private QueryResult<ServerItem> ToResult(QueryResult<BaseItem> result)
+        {
+            var serverItems = result
                 .Items
                 .Select(i => new ServerItem
                 {
@@ -524,11 +549,23 @@ namespace Emby.Dlna.ContentDirectory
 
             return new QueryResult<ServerItem>
             {
-                TotalRecordCount = queryResult.TotalRecordCount,
+                TotalRecordCount = result.TotalRecordCount,
                 Items = serverItems
             };
         }
 
+        private void SetSorting(InternalItemsQuery query, SortCriteria sort, bool isPreSorted)
+        {
+            var sortOrders = new List<string>();
+            if (!isPreSorted)
+            {
+                sortOrders.Add(ItemSortBy.SortName);
+            }
+
+            query.SortBy = sortOrders.ToArray();
+            query.SortOrder = sort.SortOrder;
+        }
+
         private QueryResult<ServerItem> GetItemsFromPerson(Person person, User user, int? startIndex, int? limit)
         {
             var itemsResult = _libraryManager.GetItemsResult(new InternalItemsQuery(user)

MediaBrowser.Controller/Entities/UserViewBuilder.cs

@@ -203,9 +203,6 @@ namespace MediaBrowser.Controller.Entities
                 case SpecialFolder.MusicGenres:
                     return GetMusicGenres(queryParent, user, query);
 
-                case SpecialFolder.MusicGenre:
-                    return await GetMusicGenreItems(queryParent, displayParent, user, query).ConfigureAwait(false);
-
                 case SpecialFolder.MusicLatest:
                     return GetMusicLatest(queryParent, user, query);
 
@@ -306,18 +303,6 @@ namespace MediaBrowser.Controller.Entities
             };
         }
 
-        private async Task<QueryResult<BaseItem>> GetMusicGenreItems(Folder queryParent, Folder displayParent, User user, InternalItemsQuery query)
-        {
-            query.Recursive = true;
-            query.ParentId = queryParent.Id;
-            query.Genres = new[] { displayParent.Name };
-            query.SetUser(user);
-
-            query.IncludeItemTypes = new[] { typeof(MusicAlbum).Name };
-
-            return _libraryManager.GetItemsResult(query);
-        }
-
         private QueryResult<BaseItem> GetMusicAlbumArtists(Folder parent, User user, InternalItemsQuery query)
         {
             var artists = _libraryManager.GetAlbumArtists(new InternalItemsQuery(user)

MediaBrowser.Model/Entities/CollectionType.cs

@@ -48,18 +48,10 @@
         public const string MovieGenres = "MovieGenres";
         public const string MovieGenre = "MovieGenre";
 
-        public const string LatestGames = "LatestGames";
-        public const string RecentlyPlayedGames = "RecentlyPlayedGames";
-        public const string GameSystems = "GameSystems";
-        public const string GameGenres = "GameGenres";
-        public const string GameFavorites = "GameFavorites";
-        public const string GameGenre = "GameGenre";
-
         public const string MusicArtists = "MusicArtists";
         public const string MusicAlbumArtists = "MusicAlbumArtists";
         public const string MusicAlbums = "MusicAlbums";
         public const string MusicGenres = "MusicGenres";
-        public const string MusicGenre = "MusicGenre";
         public const string MusicLatest = "MusicLatest";
         public const string MusicPlaylists = "MusicPlaylists";
         public const string MusicSongs = "MusicSongs";