1 files changed, 113 insertions, 0 deletions
diff --git a/MediaBrowser.Controller/Providers/BaseImageEnhancer.cs b/MediaBrowser.Controller/Providers/BaseImageEnhancer.cs
new file mode 100644
index 000000000..bd60003be
--- /dev/null
+++ b/MediaBrowser.Controller/Providers/BaseImageEnhancer.cs
@@ -0,0 +1,113 @@
+using MediaBrowser.Common.Logging;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Model.Drawing;
+using MediaBrowser.Model.Entities;
+using System;
+using System.Drawing;
+using System.Threading.Tasks;
+
+namespace MediaBrowser.Controller.Providers
+{
+    /// <summary>
+    /// Class BaseImageEnhancer
+    /// </summary>
+    public abstract class BaseImageEnhancer : IDisposable
+    {
+        /// <summary>
+        /// Return true only if the given image for the given item will be enhanced by this enhancer.
+        /// </summary>
+        /// <param name="item">The item.</param>
+        /// <param name="imageType">Type of the image.</param>
+        /// <returns><c>true</c> if this enhancer will enhance the supplied image for the supplied item, <c>false</c> otherwise</returns>
+        public abstract bool Supports(BaseItem item, ImageType imageType);
+
+        /// <summary>
+        /// Gets the priority or order in which this enhancer should be run.
+        /// </summary>
+        /// <value>The priority.</value>
+        public abstract MetadataProviderPriority Priority { get; }
+
+        /// <summary>
+        /// Return the date of the last configuration change affecting the provided baseitem and image type
+        /// </summary>
+        /// <param name="item">The item.</param>
+        /// <param name="imageType">Type of the image.</param>
+        /// <returns>Date of last config change</returns>
+        public virtual DateTime LastConfigurationChange(BaseItem item, ImageType imageType)
+        {
+            return DateTime.MinValue;
+        }
+
+        /// <summary>
+        /// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
+        /// </summary>
+        public void Dispose()
+        {
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+
+        /// <summary>
+        /// Releases unmanaged and - optionally - managed resources.
+        /// </summary>
+        /// <param name="dispose"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
+        protected virtual void Dispose(bool dispose)
+        {
+        }
+
+        /// <summary>
+        /// Gets the size of the enhanced image.
+        /// </summary>
+        /// <param name="item">The item.</param>
+        /// <param name="imageType">Type of the image.</param>
+        /// <param name="imageIndex">Index of the image.</param>
+        /// <param name="originalImageSize">Size of the original image.</param>
+        /// <returns>ImageSize.</returns>
+        public virtual ImageSize GetEnhancedImageSize(BaseItem item, ImageType imageType, int imageIndex, ImageSize originalImageSize)
+        {
+            return originalImageSize;
+        }
+
+        /// <summary>
+        /// Enhances the supplied image and returns it
+        /// </summary>
+        /// <param name="item">The item.</param>
+        /// <param name="originalImage">The original image.</param>
+        /// <param name="imageType">Type of the image.</param>
+        /// <param name="imageIndex">Index of the image.</param>
+        /// <returns>Task{System.Drawing.Image}.</returns>
+        protected abstract Task<Image> EnhanceImageAsyncInternal(BaseItem item, Image originalImage, ImageType imageType, int imageIndex);
+
+        /// <summary>
+        /// Enhances the image async.
+        /// </summary>
+        /// <param name="item">The item.</param>
+        /// <param name="originalImage">The original image.</param>
+        /// <param name="imageType">Type of the image.</param>
+        /// <param name="imageIndex">Index of the image.</param>
+        /// <returns>Task{Image}.</returns>
+        /// <exception cref="System.ArgumentNullException"></exception>
+        public async Task<Image> EnhanceImageAsync(BaseItem item, Image originalImage, ImageType imageType, int imageIndex)
+        {
+            if (item == null || originalImage == null)
+            {
+                throw new ArgumentNullException();
+            }
+
+            var typeName = GetType().Name;
+
+            Logger.LogDebugInfo("Running {0} for {1}", typeName, item.Path ?? item.Name ?? "--Unknown--");
+
+            try
+            {
+                return await EnhanceImageAsyncInternal(item, originalImage, imageType, imageIndex).ConfigureAwait(false);
+            }
+            catch (Exception ex)
+            {
+                Logger.LogException("{0} failed enhancing {1}", ex, typeName, item.Name);
+
+                throw;
+            }
+        }
+    }
+}