Remove unnecessary casts and explicit array types

MediaBrowser.Api/ChannelService.cs

@@ -241,7 +241,7 @@ namespace MediaBrowser.Api
             {
                 Limit = request.Limit,
                 StartIndex = request.StartIndex,
-                ChannelIds = new Guid[] { new Guid(request.Id) },
+                ChannelIds = new[] { new Guid(request.Id) },
                 ParentId = string.IsNullOrWhiteSpace(request.FolderId) ? Guid.Empty : new Guid(request.FolderId),
                 OrderBy = request.GetOrderBy(),
                 DtoOptions = new Controller.Dto.DtoOptions

MediaBrowser.Api/FilterService.cs

@@ -133,7 +133,7 @@ namespace MediaBrowser.Api
             // Non recursive not yet supported for library folders
             if ((request.Recursive ?? true) || parentItem is UserView || parentItem is ICollectionFolder)
             {
-                genreQuery.AncestorIds = parentItem == null ? Array.Empty<Guid>() : new Guid[] { parentItem.Id };
+                genreQuery.AncestorIds = parentItem == null ? Array.Empty<Guid>() : new[] { parentItem.Id };
             }
             else
             {
@@ -231,7 +231,7 @@ namespace MediaBrowser.Api
                 EnableTotalRecordCount = false,
                 DtoOptions = new Controller.Dto.DtoOptions
                 {
-                    Fields = new ItemFields[] { ItemFields.Genres, ItemFields.Tags },
+                    Fields = new[] { ItemFields.Genres, ItemFields.Tags },
                     EnableImages = false,
                     EnableUserData = false
                 }

MediaBrowser.Api/Images/ImageService.cs

@@ -650,7 +650,7 @@ namespace MediaBrowser.Api.Images
             if (!string.IsNullOrWhiteSpace(request.Format)
                 && Enum.TryParse(request.Format, true, out ImageFormat format))
             {
-                return new ImageFormat[] { format };
+                return new[] { format };
             }
 
             return GetClientSupportedFormats();

MediaBrowser.Api/Library/LibraryService.cs

@@ -351,24 +351,24 @@ namespace MediaBrowser.Api.Library
             switch (contentType)
             {
                 case CollectionType.BoxSets:
-                    return new string[] { "BoxSet" };
+                    return new[] { "BoxSet" };
                 case CollectionType.Playlists:
-                    return new string[] { "Playlist" };
+                    return new[] { "Playlist" };
                 case CollectionType.Movies:
-                    return new string[] { "Movie" };
+                    return new[] { "Movie" };
                 case CollectionType.TvShows:
-                    return new string[] { "Series", "Season", "Episode" };
+                    return new[] { "Series", "Season", "Episode" };
                 case CollectionType.Books:
-                    return new string[] { "Book" };
+                    return new[] { "Book" };
                 case CollectionType.Music:
-                    return new string[] { "MusicAlbum", "MusicArtist", "Audio", "MusicVideo" };
+                    return new[] { "MusicAlbum", "MusicArtist", "Audio", "MusicVideo" };
                 case CollectionType.HomeVideos:
                 case CollectionType.Photos:
-                    return new string[] { "Video", "Photo" };
+                    return new[] { "Video", "Photo" };
                 case CollectionType.MusicVideos:
-                    return new string[] { "MusicVideo" };
+                    return new[] { "MusicVideo" };
                 default:
-                    return new string[] { "Series", "Season", "Episode", "Movie" };
+                    return new[] { "Series", "Season", "Episode", "Movie" };
             }
         }
 
@@ -1086,7 +1086,7 @@ namespace MediaBrowser.Api.Library
             var item = string.IsNullOrEmpty(request.Id)
                            ? (!request.UserId.Equals(Guid.Empty)
                                   ? _libraryManager.GetUserRootFolder()
-                                  : (Folder)_libraryManager.RootFolder)
+                                  : _libraryManager.RootFolder)
                            : _libraryManager.GetItemById(request.Id);
 
             if (item == null)
@@ -1152,7 +1152,7 @@ namespace MediaBrowser.Api.Library
             var item = string.IsNullOrEmpty(request.Id)
                            ? (!request.UserId.Equals(Guid.Empty)
                                   ? _libraryManager.GetUserRootFolder()
-                                  : (Folder)_libraryManager.RootFolder)
+                                  : _libraryManager.RootFolder)
                            : _libraryManager.GetItemById(request.Id);
 
             if (item == null)

MediaBrowser.Api/Movies/MoviesService.cs

@@ -394,7 +394,7 @@ namespace MediaBrowser.Api.Movies
         {
             var people = _libraryManager.GetPeople(new InternalPeopleQuery
             {
-                PersonTypes = new string[]
+                PersonTypes = new[]
                 {
                     PersonType.Director
                 }

MediaBrowser.Api/Playback/MediaInfoService.cs

@@ -234,7 +234,7 @@ namespace MediaBrowser.Api.Playback
                         OpenToken = mediaSource.OpenToken
                     }).ConfigureAwait(false);
 
-                    info.MediaSources = new MediaSourceInfo[] { openStreamResult.MediaSource };
+                    info.MediaSources = new[] { openStreamResult.MediaSource };
                 }
             }
 
@@ -289,7 +289,7 @@ namespace MediaBrowser.Api.Playback
             {
                 var mediaSource = await _mediaSourceManager.GetLiveStream(liveStreamId, CancellationToken.None).ConfigureAwait(false);
 
-                mediaSources = new MediaSourceInfo[] { mediaSource };
+                mediaSources = new[] { mediaSource };
             }
 
             if (mediaSources.Length == 0)
@@ -366,7 +366,7 @@ namespace MediaBrowser.Api.Playback
 
             var options = new VideoOptions
             {
-                MediaSources = new MediaSourceInfo[] { mediaSource },
+                MediaSources = new[] { mediaSource },
                 Context = EncodingContext.Streaming,
                 DeviceId = auth.DeviceId,
                 ItemId = item.Id,

MediaBrowser.Api/Playback/UniversalAudioService.cs

@@ -300,7 +300,7 @@ namespace MediaBrowser.Api.Playback
 
                 // hls segment container can only be mpegts or fmp4 per ffmpeg documentation
                 // TODO: remove this when we switch back to the segment muxer
-                var supportedHLSContainers = new string[] { "mpegts", "fmp4" };
+                var supportedHLSContainers = new[] { "mpegts", "fmp4" };
 
                 var newRequest = new GetMasterHlsAudioPlaylist
                 {