make chapter images a per-library setting

MediaBrowser.Controller/Entities/CollectionFolder.cs

@@ -106,7 +106,7 @@ namespace MediaBrowser.Controller.Entities
             {
                 LibraryOptions[path] = options;
 
-                options.SchemaVersion = 1;
+                options.SchemaVersion = 2;
                 XmlSerializer.SerializeToFile(options, GetLibraryOptionsPath(path));
             }
         }

MediaBrowser.Model/Configuration/LibraryOptions.cs

@@ -6,6 +6,8 @@
         public bool EnablePhotos { get; set; }
         public bool EnableRealtimeMonitor { get; set; }
         public int SchemaVersion { get; set; }
+        public bool EnableChapterImageExtraction { get; set; }
+        public bool ExtractChapterImagesDuringLibraryScan { get; set; }
 
         public LibraryOptions()
         {

MediaBrowser.Providers/MediaInfo/FFProbeVideoInfo.cs

@@ -261,11 +261,18 @@ namespace MediaBrowser.Providers.MediaInfo
 
                 NormalizeChapterNames(chapters);
 
+                var libraryOptions = _libraryManager.GetLibraryOptions(video);
+                var extractDuringScan = chapterOptions.ExtractDuringLibraryScan;
+                if (libraryOptions != null && libraryOptions.SchemaVersion >= 2)
+                {
+                    extractDuringScan = libraryOptions.ExtractChapterImagesDuringLibraryScan;
+                }
+
                 await _encodingManager.RefreshChapterImages(new ChapterImageRefreshOptions
                 {
                     Chapters = chapters,
                     Video = video,
-                    ExtractImages = chapterOptions.ExtractDuringLibraryScan,
+                    ExtractImages = extractDuringScan,
                     SaveChapters = false
 
                 }, cancellationToken).ConfigureAwait(false);

MediaBrowser.Server.Implementations/MediaEncoder/EncodingManager.cs

@@ -14,6 +14,7 @@ using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 using CommonIO;
+using MediaBrowser.Controller.Library;
 
 namespace MediaBrowser.Server.Implementations.MediaEncoder
 {
@@ -24,6 +25,7 @@ namespace MediaBrowser.Server.Implementations.MediaEncoder
         private readonly ILogger _logger;
         private readonly IMediaEncoder _encoder;
         private readonly IChapterManager _chapterManager;
+        private readonly ILibraryManager _libraryManager;
 
         public EncodingManager(IFileSystem fileSystem, 
             ILogger logger, 
@@ -57,27 +59,38 @@ namespace MediaBrowser.Server.Implementations.MediaEncoder
                 return false;
             }
 
-            var options = _chapterManager.GetConfiguration();
-
-            if (video is Movie)
+            var libraryOptions = _libraryManager.GetLibraryOptions(video);
+            if (libraryOptions != null && libraryOptions.SchemaVersion >= 2)
             {
-                if (!options.EnableMovieChapterImageExtraction)
+                if (!libraryOptions.EnableChapterImageExtraction)
                 {
                     return false;
                 }
             }
-            else if (video is Episode)
+            else
             {
-                if (!options.EnableEpisodeChapterImageExtraction)
+                var options = _chapterManager.GetConfiguration();
+
+                if (video is Movie)
                 {
-                    return false;
+                    if (!options.EnableMovieChapterImageExtraction)
+                    {
+                        return false;
+                    }
                 }
-            }
-            else
-            {
-                if (!options.EnableOtherVideoChapterImageExtraction)
+                else if (video is Episode)
                 {
-                    return false;
+                    if (!options.EnableEpisodeChapterImageExtraction)
+                    {
+                        return false;
+                    }
+                }
+                else
+                {
+                    if (!options.EnableOtherVideoChapterImageExtraction)
+                    {
+                        return false;
+                    }
                 }
             }