Merge branch 'jellyfin:master' into master

11 files changed, 669 insertions, 59 deletions

diff --git a/Emby.Server.Implementations/Images/ArtistImageProvider.cs b/Emby.Server.Implementations/Images/ArtistImageProvider.cs
new file mode 100644
index 000000000..e96b64595
--- /dev/null
+++ b/Emby.Server.Implementations/Images/ArtistImageProvider.cs
@@ -0,0 +1,46 @@
+#pragma warning disable CS1591
+
+using System;
+using System.Collections.Generic;
+using MediaBrowser.Common.Configuration;
+using MediaBrowser.Controller.Drawing;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Entities.Audio;
+using MediaBrowser.Controller.Providers;
+using MediaBrowser.Model.IO;
+
+namespace Emby.Server.Implementations.Images
+{
+    /// <summary>
+    /// Class ArtistImageProvider.
+    /// </summary>
+    public class ArtistImageProvider : BaseDynamicImageProvider<MusicArtist>
+    {
+        public ArtistImageProvider(IFileSystem fileSystem, IProviderManager providerManager, IApplicationPaths applicationPaths, IImageProcessor imageProcessor)
+            : base(fileSystem, providerManager, applicationPaths, imageProcessor)
+        {
+        }
+
+        /// <summary>
+        /// Get children objects used to create an artist image.
+        /// </summary>
+        /// <param name="item">The artist used to create the image.</param>
+        /// <returns>Any relevant children objects.</returns>
+        protected override IReadOnlyList<BaseItem> GetItemsWithImages(BaseItem item)
+        {
+            return Array.Empty<BaseItem>();
+
+            // TODO enable this when BaseDynamicImageProvider objects are configurable
+            // return _libraryManager.GetItemList(new InternalItemsQuery
+            // {
+            //    ArtistIds = new[] { item.Id },
+            //    IncludeItemTypes = new[] { nameof(MusicAlbum) },
+            //    OrderBy = new[] { (ItemSortBy.Random, SortOrder.Ascending) },
+            //    Limit = 4,
+            //    Recursive = true,
+            //    ImageTypes = new[] { ImageType.Primary },
+            //    DtoOptions = new DtoOptions(false)
+            // });
+        }
+    }
+}
diff --git a/Emby.Server.Implementations/Images/BaseDynamicImageProvider.cs b/Emby.Server.Implementations/Images/BaseDynamicImageProvider.cs
index 109c21f18..758986945 100644
--- a/Emby.Server.Implementations/Images/BaseDynamicImageProvider.cs
+++ b/Emby.Server.Implementations/Images/BaseDynamicImageProvider.cs
@@ -1,5 +1,10 @@
+#nullable disable
+
+#pragma warning disable CS1591
+
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 using System.IO;
 using System.Linq;
 using System.Threading;
@@ -20,11 +25,6 @@ namespace Emby.Server.Implementations.Images
     public abstract class BaseDynamicImageProvider<T> : IHasItemChangeMonitor, IForcedProvider, ICustomMetadataProvider<T>, IHasOrder
         where T : BaseItem
     {
-        protected IFileSystem FileSystem { get; private set; }
-        protected IProviderManager ProviderManager { get; private set; }
-        protected IApplicationPaths ApplicationPaths { get; private set; }
-        protected IImageProcessor ImageProcessor { get; set; }
-
         protected BaseDynamicImageProvider(IFileSystem fileSystem, IProviderManager providerManager, IApplicationPaths applicationPaths, IImageProcessor imageProcessor)
         {
             ApplicationPaths = applicationPaths;
@@ -33,18 +33,25 @@ namespace Emby.Server.Implementations.Images
             ImageProcessor = imageProcessor;
         }
 
-        protected virtual bool Supports(BaseItem item)
-        {
-            return true;
-        }
+        protected IFileSystem FileSystem { get; }
 
-        public virtual ImageType[] GetSupportedImages(BaseItem item)
-        {
-            return new ImageType[]
-            {
-                ImageType.Primary
-            };
-        }
+        protected IProviderManager ProviderManager { get; }
+
+        protected IApplicationPaths ApplicationPaths { get; }
+
+        protected IImageProcessor ImageProcessor { get; set; }
+
+        protected virtual IReadOnlyCollection<ImageType> SupportedImages { get; }
+            = new ImageType[] { ImageType.Primary };
+
+        /// <inheritdoc />
+        public string Name => "Dynamic Image Provider";
+
+        protected virtual int MaxImageAgeDays => 7;
+
+        public int Order => 0;
+
+        protected virtual bool Supports(BaseItem item) => true;
 
         public async Task<ItemUpdateType> FetchAsync(T item, MetadataRefreshOptions options, CancellationToken cancellationToken)
         {
@@ -54,18 +61,17 @@ namespace Emby.Server.Implementations.Images
             }
 
             var updateType = ItemUpdateType.None;
-            var supportedImages = GetSupportedImages(item);
 
-            if (supportedImages.Contains(ImageType.Primary))
+            if (SupportedImages.Contains(ImageType.Primary))
             {
                 var primaryResult = await FetchAsync(item, ImageType.Primary, options, cancellationToken).ConfigureAwait(false);
-                updateType = updateType | primaryResult;
+                updateType |= primaryResult;
             }
 
-            if (supportedImages.Contains(ImageType.Thumb))
+            if (SupportedImages.Contains(ImageType.Thumb))
             {
                 var thumbResult = await FetchAsync(item, ImageType.Thumb, options, cancellationToken).ConfigureAwait(false);
-                updateType = updateType | thumbResult;
+                updateType |= thumbResult;
             }
 
             return updateType;
@@ -93,12 +99,13 @@ namespace Emby.Server.Implementations.Images
             return FetchToFileInternal(item, items, imageType, cancellationToken);
         }
 
-        protected async Task<ItemUpdateType> FetchToFileInternal(BaseItem item,
-            List<BaseItem> itemsWithImages,
+        protected async Task<ItemUpdateType> FetchToFileInternal(
+            BaseItem item,
+            IReadOnlyList<BaseItem> itemsWithImages,
             ImageType imageType,
             CancellationToken cancellationToken)
         {
-            var outputPathWithoutExtension = Path.Combine(ApplicationPaths.TempDirectory, Guid.NewGuid().ToString("N"));
+            var outputPathWithoutExtension = Path.Combine(ApplicationPaths.TempDirectory, Guid.NewGuid().ToString("N", CultureInfo.InvariantCulture));
             Directory.CreateDirectory(Path.GetDirectoryName(outputPathWithoutExtension));
             string outputPath = CreateImage(item, itemsWithImages, outputPathWithoutExtension, imageType, 0);
 
@@ -119,51 +126,62 @@ namespace Emby.Server.Implementations.Images
             return ItemUpdateType.ImageUpdate;
         }
 
-        protected abstract List<BaseItem> GetItemsWithImages(BaseItem item);
+        protected abstract IReadOnlyList<BaseItem> GetItemsWithImages(BaseItem item);
 
-        protected string CreateThumbCollage(BaseItem primaryItem, List<BaseItem> items, string outputPath)
+        protected string CreateThumbCollage(BaseItem primaryItem, IEnumerable<BaseItem> items, string outputPath)
         {
             return CreateCollage(primaryItem, items, outputPath, 640, 360);
         }
 
         protected virtual IEnumerable<string> GetStripCollageImagePaths(BaseItem primaryItem, IEnumerable<BaseItem> items)
         {
+            var useBackdrop = primaryItem is CollectionFolder;
             return items
                 .Select(i =>
                 {
-                    var image = i.GetImageInfo(ImageType.Primary, 0);
+                    // Use Backdrop instead of Primary image for Library images.
+                    if (useBackdrop)
+                    {
+                        var backdrop = i.GetImageInfo(ImageType.Backdrop, 0);
+                        if (backdrop != null && backdrop.IsLocalFile)
+                        {
+                            return backdrop.Path;
+                        }
+                    }
 
+                    var image = i.GetImageInfo(ImageType.Primary, 0);
                     if (image != null && image.IsLocalFile)
                     {
                         return image.Path;
                     }
-                    image = i.GetImageInfo(ImageType.Thumb, 0);
 
+                    image = i.GetImageInfo(ImageType.Thumb, 0);
                     if (image != null && image.IsLocalFile)
                     {
                         return image.Path;
                     }
+
                     return null;
                 })
                 .Where(i => !string.IsNullOrEmpty(i));
         }
 
-        protected string CreatePosterCollage(BaseItem primaryItem, List<BaseItem> items, string outputPath)
+        protected string CreatePosterCollage(BaseItem primaryItem, IEnumerable<BaseItem> items, string outputPath)
         {
             return CreateCollage(primaryItem, items, outputPath, 400, 600);
         }
 
-        protected string CreateSquareCollage(BaseItem primaryItem, List<BaseItem> items, string outputPath)
+        protected string CreateSquareCollage(BaseItem primaryItem, IEnumerable<BaseItem> items, string outputPath)
         {
             return CreateCollage(primaryItem, items, outputPath, 600, 600);
         }
 
-        protected string CreateThumbCollage(BaseItem primaryItem, List<BaseItem> items, string outputPath, int width, int height)
+        protected string CreateThumbCollage(BaseItem primaryItem, IEnumerable<BaseItem> items, string outputPath, int width, int height)
         {
             return CreateCollage(primaryItem, items, outputPath, width, height);
         }
 
-        private string CreateCollage(BaseItem primaryItem, List<BaseItem> items, string outputPath, int width, int height)
+        private string CreateCollage(BaseItem primaryItem, IEnumerable<BaseItem> items, string outputPath, int width, int height)
         {
             Directory.CreateDirectory(Path.GetDirectoryName(outputPath));
 
@@ -175,7 +193,7 @@ namespace Emby.Server.Implementations.Images
                 InputPaths = GetStripCollageImagePaths(primaryItem, items).ToArray()
             };
 
-            if (options.InputPaths.Length == 0)
+            if (options.InputPaths.Count == 0)
             {
                 return null;
             }
@@ -185,14 +203,13 @@ namespace Emby.Server.Implementations.Images
                 return null;
             }
 
-            ImageProcessor.CreateImageCollage(options);
+            ImageProcessor.CreateImageCollage(options, primaryItem.Name);
             return outputPath;
         }
 
-        public string Name => "Dynamic Image Provider";
-
-        protected virtual string CreateImage(BaseItem item,
-            List<BaseItem> itemsWithImages,
+        protected virtual string CreateImage(
+            BaseItem item,
+            IReadOnlyCollection<BaseItem> itemsWithImages,
             string outputPathWithoutExtension,
             ImageType imageType,
             int imageIndex)
@@ -211,36 +228,35 @@ namespace Emby.Server.Implementations.Images
 
             if (imageType == ImageType.Primary)
             {
-                if (item is UserView)
-                {
-                    return CreateSquareCollage(item, itemsWithImages, outputPath);
-                }
-                if (item is Playlist || item is MusicGenre || item is Genre || item is PhotoAlbum)
+                if (item is UserView
+                    || item is Playlist
+                    || item is MusicGenre
+                    || item is Genre
+                    || item is PhotoAlbum
+                    || item is MusicArtist)
                 {
                     return CreateSquareCollage(item, itemsWithImages, outputPath);
                 }
+
                 return CreatePosterCollage(item, itemsWithImages, outputPath);
             }
 
-            throw new ArgumentException("Unexpected image type");
+            throw new ArgumentException("Unexpected image type", nameof(imageType));
         }
 
-        protected virtual int MaxImageAgeDays => 7;
-
-        public bool HasChanged(BaseItem item, IDirectoryService directoryServicee)
+        public bool HasChanged(BaseItem item, IDirectoryService directoryService)
         {
             if (!Supports(item))
             {
                 return false;
             }
 
-            var supportedImages = GetSupportedImages(item);
-
-            if (supportedImages.Contains(ImageType.Primary) && HasChanged(item, ImageType.Primary))
+            if (SupportedImages.Contains(ImageType.Primary) && HasChanged(item, ImageType.Primary))
             {
                 return true;
             }
-            if (supportedImages.Contains(ImageType.Thumb) && HasChanged(item, ImageType.Thumb))
+
+            if (SupportedImages.Contains(ImageType.Thumb) && HasChanged(item, ImageType.Thumb))
             {
                 return true;
             }
@@ -276,16 +292,10 @@ namespace Emby.Server.Implementations.Images
         protected virtual bool HasChangedByDate(BaseItem item, ItemImageInfo image)
         {
             var age = DateTime.UtcNow - image.DateModified;
-            if (age.TotalDays <= MaxImageAgeDays)
-            {
-                return false;
-            }
-            return true;
+            return age.TotalDays > MaxImageAgeDays;
         }
 
-        public int Order => 0;
-
-        protected string CreateSingleImage(List<BaseItem> itemsWithImages, string outputPathWithoutExtension, ImageType imageType)
+        protected string CreateSingleImage(IEnumerable<BaseItem> itemsWithImages, string outputPathWithoutExtension, ImageType imageType)
         {
             var image = itemsWithImages
                 .Where(i => i.HasImage(imageType) && i.GetImageInfo(imageType, 0).IsLocalFile && Path.HasExtension(i.GetImagePath(imageType)))
diff --git a/Emby.Server.Implementations/Images/BaseFolderImageProvider.cs b/Emby.Server.Implementations/Images/BaseFolderImageProvider.cs
new file mode 100644
index 000000000..1c69056d2
--- /dev/null
+++ b/Emby.Server.Implementations/Images/BaseFolderImageProvider.cs
@@ -0,0 +1,67 @@
+#nullable disable
+
+#pragma warning disable CS1591
+
+using System.Collections.Generic;
+using Jellyfin.Data.Enums;
+using MediaBrowser.Common.Configuration;
+using MediaBrowser.Controller.Drawing;
+using MediaBrowser.Controller.Dto;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Entities.Audio;
+using MediaBrowser.Controller.Library;
+using MediaBrowser.Controller.Providers;
+using MediaBrowser.Model.Entities;
+using MediaBrowser.Model.IO;
+using MediaBrowser.Model.Querying;
+
+namespace Emby.Server.Implementations.Images
+{
+    public abstract class BaseFolderImageProvider<T> : BaseDynamicImageProvider<T>
+        where T : Folder, new()
+    {
+        private readonly ILibraryManager _libraryManager;
+
+        public BaseFolderImageProvider(IFileSystem fileSystem, IProviderManager providerManager, IApplicationPaths applicationPaths, IImageProcessor imageProcessor, ILibraryManager libraryManager)
+            : base(fileSystem, providerManager, applicationPaths, imageProcessor)
+        {
+            _libraryManager = libraryManager;
+        }
+
+        protected override IReadOnlyList<BaseItem> GetItemsWithImages(BaseItem item)
+        {
+            return _libraryManager.GetItemList(new InternalItemsQuery
+            {
+                Parent = item,
+                DtoOptions = new DtoOptions(true),
+                ImageTypes = new ImageType[] { ImageType.Primary },
+                OrderBy = new (string, SortOrder)[]
+                {
+                    (ItemSortBy.IsFolder, SortOrder.Ascending),
+                    (ItemSortBy.SortName, SortOrder.Ascending)
+                },
+                Limit = 1
+            });
+        }
+
+        protected override string CreateImage(BaseItem item, IReadOnlyCollection<BaseItem> itemsWithImages, string outputPathWithoutExtension, ImageType imageType, int imageIndex)
+        {
+            return CreateSingleImage(itemsWithImages, outputPathWithoutExtension, ImageType.Primary);
+        }
+
+        protected override bool Supports(BaseItem item)
+        {
+            return item is T;
+        }
+
+        protected override bool HasChangedByDate(BaseItem item, ItemImageInfo image)
+        {
+            if (item is MusicAlbum)
+            {
+                return false;
+            }
+
+            return base.HasChangedByDate(item, image);
+        }
+    }
+}
diff --git a/Emby.Server.Implementations/Images/CollectionFolderImageProvider.cs b/Emby.Server.Implementations/Images/CollectionFolderImageProvider.cs
new file mode 100644
index 000000000..0229fbae7
--- /dev/null
+++ b/Emby.Server.Implementations/Images/CollectionFolderImageProvider.cs
@@ -0,0 +1,101 @@
+#nullable disable
+
+#pragma warning disable CS1591
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using Jellyfin.Data.Enums;
+using MediaBrowser.Common.Configuration;
+using MediaBrowser.Controller.Drawing;
+using MediaBrowser.Controller.Dto;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Providers;
+using MediaBrowser.Model.Entities;
+using MediaBrowser.Model.IO;
+using MediaBrowser.Model.Querying;
+
+namespace Emby.Server.Implementations.Images
+{
+    public class CollectionFolderImageProvider : BaseDynamicImageProvider<CollectionFolder>
+    {
+        public CollectionFolderImageProvider(IFileSystem fileSystem, IProviderManager providerManager, IApplicationPaths applicationPaths, IImageProcessor imageProcessor) : base(fileSystem, providerManager, applicationPaths, imageProcessor)
+        {
+        }
+
+        protected override IReadOnlyList<BaseItem> GetItemsWithImages(BaseItem item)
+        {
+            var view = (CollectionFolder)item;
+            var viewType = view.CollectionType;
+
+            string[] includeItemTypes;
+
+            if (string.Equals(viewType, CollectionType.Movies, StringComparison.Ordinal))
+            {
+                includeItemTypes = new string[] { "Movie" };
+            }
+            else if (string.Equals(viewType, CollectionType.TvShows, StringComparison.Ordinal))
+            {
+                includeItemTypes = new string[] { "Series" };
+            }
+            else if (string.Equals(viewType, CollectionType.Music, StringComparison.Ordinal))
+            {
+                includeItemTypes = new string[] { "MusicAlbum" };
+            }
+            else if (string.Equals(viewType, CollectionType.Books, StringComparison.Ordinal))
+            {
+                includeItemTypes = new string[] { "Book", "AudioBook" };
+            }
+            else if (string.Equals(viewType, CollectionType.BoxSets, StringComparison.Ordinal))
+            {
+                includeItemTypes = new string[] { "BoxSet" };
+            }
+            else if (string.Equals(viewType, CollectionType.HomeVideos, StringComparison.Ordinal) || string.Equals(viewType, CollectionType.Photos, StringComparison.Ordinal))
+            {
+                includeItemTypes = new string[] { "Video", "Photo" };
+            }
+            else
+            {
+                includeItemTypes = new string[] { "Video", "Audio", "Photo", "Movie", "Series" };
+            }
+
+            var recursive = !string.Equals(CollectionType.Playlists, viewType, StringComparison.OrdinalIgnoreCase);
+
+            return view.GetItemList(new InternalItemsQuery
+            {
+                CollapseBoxSetItems = false,
+                Recursive = recursive,
+                DtoOptions = new DtoOptions(false),
+                ImageTypes = new ImageType[] { ImageType.Primary },
+                Limit = 8,
+                OrderBy = new ValueTuple<string, SortOrder>[]
+                {
+                    new ValueTuple<string, SortOrder>(ItemSortBy.Random, SortOrder.Ascending)
+                },
+                IncludeItemTypes = includeItemTypes
+            });
+        }
+
+        protected override bool Supports(BaseItem item)
+        {
+            return item is CollectionFolder;
+        }
+
+        protected override string CreateImage(BaseItem item, IReadOnlyCollection<BaseItem> itemsWithImages, string outputPathWithoutExtension, ImageType imageType, int imageIndex)
+        {
+            var outputPath = Path.ChangeExtension(outputPathWithoutExtension, ".png");
+
+            if (imageType == ImageType.Primary)
+            {
+                if (itemsWithImages.Count == 0)
+                {
+                    return null;
+                }
+
+                return CreateThumbCollage(item, itemsWithImages, outputPath, 960, 540);
+            }
+
+            return base.CreateImage(item, itemsWithImages, outputPath, imageType, imageIndex);
+        }
+    }
+}
diff --git a/Emby.Server.Implementations/Images/DynamicImageProvider.cs b/Emby.Server.Implementations/Images/DynamicImageProvider.cs
new file mode 100644
index 000000000..900b3fd9c
--- /dev/null
+++ b/Emby.Server.Implementations/Images/DynamicImageProvider.cs
@@ -0,0 +1,131 @@
+#nullable disable
+
+#pragma warning disable CS1591
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using MediaBrowser.Common.Configuration;
+using MediaBrowser.Controller.Drawing;
+using MediaBrowser.Controller.Dto;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Entities.Audio;
+using MediaBrowser.Controller.Entities.TV;
+using MediaBrowser.Controller.Library;
+using MediaBrowser.Controller.Providers;
+using MediaBrowser.Model.Entities;
+using MediaBrowser.Model.IO;
+
+namespace Emby.Server.Implementations.Images
+{
+    public class DynamicImageProvider : BaseDynamicImageProvider<UserView>
+    {
+        private readonly IUserManager _userManager;
+
+        public DynamicImageProvider(IFileSystem fileSystem, IProviderManager providerManager, IApplicationPaths applicationPaths, IImageProcessor imageProcessor, IUserManager userManager)
+            : base(fileSystem, providerManager, applicationPaths, imageProcessor)
+        {
+            _userManager = userManager;
+        }
+
+        protected override IReadOnlyList<BaseItem> GetItemsWithImages(BaseItem item)
+        {
+            var view = (UserView)item;
+
+            var isUsingCollectionStrip = IsUsingCollectionStrip(view);
+            var recursive = isUsingCollectionStrip && !new[] { CollectionType.BoxSets, CollectionType.Playlists }.Contains(view.ViewType ?? string.Empty, StringComparer.OrdinalIgnoreCase);
+
+            var result = view.GetItemList(new InternalItemsQuery
+            {
+                User = view.UserId.HasValue ? _userManager.GetUserById(view.UserId.Value) : null,
+                CollapseBoxSetItems = false,
+                Recursive = recursive,
+                ExcludeItemTypes = new[] { "UserView", "CollectionFolder", "Person" },
+                DtoOptions = new DtoOptions(false)
+            });
+
+            var items = result.Select(i =>
+            {
+                if (i is Episode episode)
+                {
+                    var series = episode.Series;
+                    if (series != null)
+                    {
+                        return series;
+                    }
+
+                    return episode;
+                }
+
+                if (i is Season season)
+                {
+                    var series = season.Series;
+                    if (series != null)
+                    {
+                        return series;
+                    }
+
+                    return season;
+                }
+
+                if (i is Audio audio)
+                {
+                    var album = audio.AlbumEntity;
+                    if (album != null && album.HasImage(ImageType.Primary))
+                    {
+                        return album;
+                    }
+                }
+
+                return i;
+            }).GroupBy(x => x.Id)
+            .Select(x => x.First());
+
+            if (isUsingCollectionStrip)
+            {
+                return items
+                    .Where(i => i.HasImage(ImageType.Primary) || i.HasImage(ImageType.Thumb))
+                    .ToList();
+            }
+
+            return items
+                .Where(i => i.HasImage(ImageType.Primary))
+                .ToList();
+        }
+
+        protected override bool Supports(BaseItem item)
+        {
+            if (item is UserView view)
+            {
+                return IsUsingCollectionStrip(view);
+            }
+
+            return false;
+        }
+
+        private static bool IsUsingCollectionStrip(UserView view)
+        {
+            string[] collectionStripViewTypes =
+            {
+                CollectionType.Movies,
+                CollectionType.TvShows,
+                CollectionType.Playlists
+            };
+
+            return collectionStripViewTypes.Contains(view.ViewType ?? string.Empty);
+        }
+
+        protected override string CreateImage(BaseItem item, IReadOnlyCollection<BaseItem> itemsWithImages, string outputPathWithoutExtension, ImageType imageType, int imageIndex)
+        {
+            if (itemsWithImages.Count == 0)
+            {
+                return null;
+            }
+
+            var outputPath = Path.ChangeExtension(outputPathWithoutExtension, ".png");
+
+            return CreateThumbCollage(item, itemsWithImages, outputPath, 960, 540);
+        }
+    }
+}
diff --git a/Emby.Server.Implementations/Images/FolderImageProvider.cs b/Emby.Server.Implementations/Images/FolderImageProvider.cs
new file mode 100644
index 000000000..4376bd356
--- /dev/null
+++ b/Emby.Server.Implementations/Images/FolderImageProvider.cs
@@ -0,0 +1,37 @@
+#nullable disable
+
+#pragma warning disable CS1591
+
+using MediaBrowser.Common.Configuration;
+using MediaBrowser.Controller.Drawing;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Entities.Audio;
+using MediaBrowser.Controller.Library;
+using MediaBrowser.Controller.Providers;
+using MediaBrowser.Model.IO;
+
+namespace Emby.Server.Implementations.Images
+{
+    public class FolderImageProvider : BaseFolderImageProvider<Folder>
+    {
+        public FolderImageProvider(IFileSystem fileSystem, IProviderManager providerManager, IApplicationPaths applicationPaths, IImageProcessor imageProcessor, ILibraryManager libraryManager)
+            : base(fileSystem, providerManager, applicationPaths, imageProcessor, libraryManager)
+        {
+        }
+
+        protected override bool Supports(BaseItem item)
+        {
+            if (item is PhotoAlbum || item is MusicAlbum)
+            {
+                return false;
+            }
+
+            if (item is Folder && item.IsTopParent)
+            {
+                return false;
+            }
+
+            return true;
+        }
+    }
+}
diff --git a/Emby.Server.Implementations/Images/GenreImageProvider.cs b/Emby.Server.Implementations/Images/GenreImageProvider.cs
new file mode 100644
index 000000000..1f5090f7f
--- /dev/null
+++ b/Emby.Server.Implementations/Images/GenreImageProvider.cs
@@ -0,0 +1,55 @@
+#nullable disable
+
+#pragma warning disable CS1591
+
+using System.Collections.Generic;
+using Jellyfin.Data.Enums;
+using MediaBrowser.Common.Configuration;
+using MediaBrowser.Controller.Drawing;
+using MediaBrowser.Controller.Dto;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Entities.Movies;
+using MediaBrowser.Controller.Entities.TV;
+using MediaBrowser.Controller.Library;
+using MediaBrowser.Controller.Providers;
+using MediaBrowser.Model.Entities;
+using MediaBrowser.Model.IO;
+using MediaBrowser.Model.Querying;
+
+namespace Emby.Server.Implementations.Images
+{
+    /// <summary>
+    /// Class GenreImageProvider.
+    /// </summary>
+    public class GenreImageProvider : BaseDynamicImageProvider<Genre>
+    {
+        /// <summary>
+        /// The library manager.
+        /// </summary>
+        private readonly ILibraryManager _libraryManager;
+
+        public GenreImageProvider(IFileSystem fileSystem, IProviderManager providerManager, IApplicationPaths applicationPaths, IImageProcessor imageProcessor, ILibraryManager libraryManager) : base(fileSystem, providerManager, applicationPaths, imageProcessor)
+        {
+            _libraryManager = libraryManager;
+        }
+
+        /// <summary>
+        /// Get children objects used to create an genre image.
+        /// </summary>
+        /// <param name="item">The genre used to create the image.</param>
+        /// <returns>Any relevant children objects.</returns>
+        protected override IReadOnlyList<BaseItem> GetItemsWithImages(BaseItem item)
+        {
+            return _libraryManager.GetItemList(new InternalItemsQuery
+            {
+                Genres = new[] { item.Name },
+                IncludeItemTypes = new[] { nameof(Series), nameof(Movie) },
+                OrderBy = new[] { (ItemSortBy.Random, SortOrder.Ascending) },
+                Limit = 4,
+                Recursive = true,
+                ImageTypes = new[] { ImageType.Primary },
+                DtoOptions = new DtoOptions(false)
+            });
+        }
+    }
+}
diff --git a/Emby.Server.Implementations/Images/MusicAlbumImageProvider.cs b/Emby.Server.Implementations/Images/MusicAlbumImageProvider.cs
new file mode 100644
index 000000000..ce8367363
--- /dev/null
+++ b/Emby.Server.Implementations/Images/MusicAlbumImageProvider.cs
@@ -0,0 +1,19 @@
+#pragma warning disable CS1591
+
+using MediaBrowser.Common.Configuration;
+using MediaBrowser.Controller.Drawing;
+using MediaBrowser.Controller.Entities.Audio;
+using MediaBrowser.Controller.Library;
+using MediaBrowser.Controller.Providers;
+using MediaBrowser.Model.IO;
+
+namespace Emby.Server.Implementations.Images
+{
+    public class MusicAlbumImageProvider : BaseFolderImageProvider<MusicAlbum>
+    {
+        public MusicAlbumImageProvider(IFileSystem fileSystem, IProviderManager providerManager, IApplicationPaths applicationPaths, IImageProcessor imageProcessor, ILibraryManager libraryManager)
+            : base(fileSystem, providerManager, applicationPaths, imageProcessor, libraryManager)
+        {
+        }
+    }
+}
diff --git a/Emby.Server.Implementations/Images/MusicGenreImageProvider.cs b/Emby.Server.Implementations/Images/MusicGenreImageProvider.cs
new file mode 100644
index 000000000..baf1c9051
--- /dev/null
+++ b/Emby.Server.Implementations/Images/MusicGenreImageProvider.cs
@@ -0,0 +1,59 @@
+#nullable disable
+
+#pragma warning disable CS1591
+
+using System.Collections.Generic;
+using Jellyfin.Data.Enums;
+using MediaBrowser.Common.Configuration;
+using MediaBrowser.Controller.Drawing;
+using MediaBrowser.Controller.Dto;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Entities.Audio;
+using MediaBrowser.Controller.Library;
+using MediaBrowser.Controller.Providers;
+using MediaBrowser.Model.Entities;
+using MediaBrowser.Model.IO;
+using MediaBrowser.Model.Querying;
+
+namespace Emby.Server.Implementations.Images
+{
+    /// <summary>
+    /// Class MusicGenreImageProvider.
+    /// </summary>
+    public class MusicGenreImageProvider : BaseDynamicImageProvider<MusicGenre>
+    {
+        /// <summary>
+        /// The library manager.
+        /// </summary>
+        private readonly ILibraryManager _libraryManager;
+
+        public MusicGenreImageProvider(IFileSystem fileSystem, IProviderManager providerManager, IApplicationPaths applicationPaths, IImageProcessor imageProcessor, ILibraryManager libraryManager) : base(fileSystem, providerManager, applicationPaths, imageProcessor)
+        {
+            _libraryManager = libraryManager;
+        }
+
+        /// <summary>
+        /// Get children objects used to create an music genre image.
+        /// </summary>
+        /// <param name="item">The music genre used to create the image.</param>
+        /// <returns>Any relevant children objects.</returns>
+        protected override IReadOnlyList<BaseItem> GetItemsWithImages(BaseItem item)
+        {
+            return _libraryManager.GetItemList(new InternalItemsQuery
+            {
+                Genres = new[] { item.Name },
+                IncludeItemTypes = new[]
+                {
+                    nameof(MusicAlbum),
+                    nameof(MusicVideo),
+                    nameof(Audio)
+                },
+                OrderBy = new[] { (ItemSortBy.Random, SortOrder.Ascending) },
+                Limit = 4,
+                Recursive = true,
+                ImageTypes = new[] { ImageType.Primary },
+                DtoOptions = new DtoOptions(false)
+            });
+        }
+    }
+}
diff --git a/Emby.Server.Implementations/Images/PhotoAlbumImageProvider.cs b/Emby.Server.Implementations/Images/PhotoAlbumImageProvider.cs
new file mode 100644
index 000000000..1ddb4c757
--- /dev/null
+++ b/Emby.Server.Implementations/Images/PhotoAlbumImageProvider.cs
@@ -0,0 +1,19 @@
+#pragma warning disable CS1591
+
+using MediaBrowser.Common.Configuration;
+using MediaBrowser.Controller.Drawing;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Library;
+using MediaBrowser.Controller.Providers;
+using MediaBrowser.Model.IO;
+
+namespace Emby.Server.Implementations.Images
+{
+    public class PhotoAlbumImageProvider : BaseFolderImageProvider<PhotoAlbum>
+    {
+        public PhotoAlbumImageProvider(IFileSystem fileSystem, IProviderManager providerManager, IApplicationPaths applicationPaths, IImageProcessor imageProcessor, ILibraryManager libraryManager)
+            : base(fileSystem, providerManager, applicationPaths, imageProcessor, libraryManager)
+        {
+        }
+    }
+}
diff --git a/Emby.Server.Implementations/Images/PlaylistImageProvider.cs b/Emby.Server.Implementations/Images/PlaylistImageProvider.cs
new file mode 100644
index 000000000..b8f0f0d65
--- /dev/null
+++ b/Emby.Server.Implementations/Images/PlaylistImageProvider.cs
@@ -0,0 +1,66 @@
+#nullable disable
+
+#pragma warning disable CS1591
+
+using System.Collections.Generic;
+using System.Linq;
+using MediaBrowser.Common.Configuration;
+using MediaBrowser.Controller.Drawing;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Entities.Audio;
+using MediaBrowser.Controller.Entities.TV;
+using MediaBrowser.Controller.Playlists;
+using MediaBrowser.Controller.Providers;
+using MediaBrowser.Model.Entities;
+using MediaBrowser.Model.IO;
+
+namespace Emby.Server.Implementations.Images
+{
+    public class PlaylistImageProvider : BaseDynamicImageProvider<Playlist>
+    {
+        public PlaylistImageProvider(IFileSystem fileSystem, IProviderManager providerManager, IApplicationPaths applicationPaths, IImageProcessor imageProcessor) : base(fileSystem, providerManager, applicationPaths, imageProcessor)
+        {
+        }
+
+        protected override IReadOnlyList<BaseItem> GetItemsWithImages(BaseItem item)
+        {
+            var playlist = (Playlist)item;
+
+            return playlist.GetManageableItems()
+                .Select(i =>
+                {
+                    var subItem = i.Item2;
+
+                    if (subItem is Episode episode)
+                    {
+                        var series = episode.Series;
+                        if (series != null && series.HasImage(ImageType.Primary))
+                        {
+                            return series;
+                        }
+                    }
+
+                    if (subItem.HasImage(ImageType.Primary))
+                    {
+                        return subItem;
+                    }
+
+                    var parent = subItem.GetOwner() ?? subItem.GetParent();
+
+                    if (parent != null && parent.HasImage(ImageType.Primary))
+                    {
+                        if (parent is MusicAlbum)
+                        {
+                            return parent;
+                        }
+                    }
+
+                    return null;
+                })
+                .Where(i => i != null)
+                .GroupBy(x => x.Id)
+                .Select(x => x.First())
+                .ToList();
+        }
+    }
+}