Pushing missing changes

MediaBrowser.Controller/ScheduledTasks/ChapterImagesTask.cs

@@ -0,0 +1,100 @@
+using MediaBrowser.Common.ScheduledTasks;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Model.Tasks;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace MediaBrowser.Controller.ScheduledTasks
+{
+    [Export(typeof(IScheduledTask))]
+    class ChapterImagesTask : BaseScheduledTask<Kernel>
+    {
+        /// <summary>
+        /// Creates the triggers that define when the task will run
+        /// </summary>
+        /// <returns>IEnumerable{BaseTaskTrigger}.</returns>
+        protected override IEnumerable<BaseTaskTrigger> GetDefaultTriggers()
+        {
+            return new BaseTaskTrigger[]
+                {
+                    new DailyTrigger { TimeOfDay = TimeSpan.FromHours(4) }
+                };
+        }
+
+        /// <summary>
+        /// Returns the task to be executed
+        /// </summary>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <param name="progress">The progress.</param>
+        /// <returns>Task.</returns>
+        protected override Task ExecuteInternal(CancellationToken cancellationToken, IProgress<TaskProgress> progress)
+        {
+            var videos = Kernel.RootFolder.RecursiveChildren.OfType<Video>().Where(v => v.Chapters != null).ToList();
+
+            var numComplete = 0;
+
+            var tasks = videos.Select(v => Task.Run(async () =>
+            {
+                try
+                {
+                    await Kernel.FFMpegManager.PopulateChapterImages(v, cancellationToken, true, true);
+                }
+                catch (OperationCanceledException)
+                {
+                    throw;
+                }
+                catch (Exception ex)
+                {
+                    Logger.ErrorException("Error creating chapter images for {0}", ex, v.Name);
+                }
+                finally
+                {
+                    lock (progress)
+                    {
+                        numComplete++;
+                        double percent = numComplete;
+                        percent /= videos.Count;
+
+                        progress.Report(new TaskProgress { PercentComplete = 100 * percent });
+                    }
+                }
+            }));
+
+            return Task.WhenAll(tasks);
+        }
+
+        /// <summary>
+        /// Gets the name of the task
+        /// </summary>
+        /// <value>The name.</value>
+        public override string Name
+        {
+            get { return "Create video chapter thumbnails"; }
+        }
+
+        /// <summary>
+        /// Gets the description.
+        /// </summary>
+        /// <value>The description.</value>
+        public override string Description
+        {
+            get { return "Creates thumbnails for videos that have chapters."; }
+        }
+
+        /// <summary>
+        /// Gets the category.
+        /// </summary>
+        /// <value>The category.</value>
+        public override string Category
+        {
+            get
+            {
+                return "Library";
+            }
+        }
+    }
+}