add error handling

1 files changed, 28 insertions, 23 deletions

diff --git a/MediaBrowser.Controller/Entities/Video.cs b/MediaBrowser.Controller/Entities/Video.cs
index 0618fc489..5f5be1670 100644
--- a/MediaBrowser.Controller/Entities/Video.cs
+++ b/MediaBrowser.Controller/Entities/Video.cs
@@ -591,41 +591,46 @@ namespace MediaBrowser.Controller.Entities
             .ToList();
         }
 
-        private static MediaSourceInfo GetVersionInfo(bool enablePathSubstitution, Video i, MediaSourceType type)
+        private static MediaSourceInfo GetVersionInfo(bool enablePathSubstitution, Video media, MediaSourceType type)
         {
-            var mediaStreams = MediaSourceManager.GetMediaStreams(i.Id)
+            if (media == null)
+            {
+                throw new ArgumentNullException("media");
+            }
+
+            var mediaStreams = MediaSourceManager.GetMediaStreams(media.Id)
                 .ToList();
 
-            var locationType = i.LocationType;
+            var locationType = media.LocationType;
 
             var info = new MediaSourceInfo
             {
-                Id = i.Id.ToString("N"),
-                IsoType = i.IsoType,
+                Id = media.Id.ToString("N"),
+                IsoType = media.IsoType,
                 Protocol = locationType == LocationType.Remote ? MediaProtocol.Http : MediaProtocol.File,
                 MediaStreams = mediaStreams,
-                Name = GetMediaSourceName(i, mediaStreams),
-                Path = enablePathSubstitution ? GetMappedPath(i, i.Path, locationType) : i.Path,
-                RunTimeTicks = i.RunTimeTicks,
-                Video3DFormat = i.Video3DFormat,
-                VideoType = i.VideoType,
-                Container = i.Container,
-                Size = i.Size,
-                Timestamp = i.Timestamp,
+                Name = GetMediaSourceName(media, mediaStreams),
+                Path = enablePathSubstitution ? GetMappedPath(media, media.Path, locationType) : media.Path,
+                RunTimeTicks = media.RunTimeTicks,
+                Video3DFormat = media.Video3DFormat,
+                VideoType = media.VideoType,
+                Container = media.Container,
+                Size = media.Size,
+                Timestamp = media.Timestamp,
                 Type = type,
-                PlayableStreamFileNames = i.PlayableStreamFileNames.ToList(),
-                SupportsDirectStream = i.VideoType == VideoType.VideoFile,
-                IsRemote = i.IsShortcut
+                PlayableStreamFileNames = media.PlayableStreamFileNames.ToList(),
+                SupportsDirectStream = media.VideoType == VideoType.VideoFile,
+                IsRemote = media.IsShortcut
             };
 
             if (info.Protocol == MediaProtocol.File)
             {
-                info.ETag = i.DateModified.Ticks.ToString(CultureInfo.InvariantCulture).GetMD5().ToString("N");
+                info.ETag = media.DateModified.Ticks.ToString(CultureInfo.InvariantCulture).GetMD5().ToString("N");
             }
 
-            if (i.IsShortcut)
+            if (media.IsShortcut)
             {
-                info.Path = i.ShortcutPath;
+                info.Path = media.ShortcutPath;
 
                 if (info.Path.StartsWith("Http", StringComparison.OrdinalIgnoreCase))
                 {
@@ -647,16 +652,16 @@ namespace MediaBrowser.Controller.Entities
 
             if (string.IsNullOrEmpty(info.Container))
             {
-                if (i.VideoType == VideoType.VideoFile || i.VideoType == VideoType.Iso)
+                if (media.VideoType == VideoType.VideoFile || media.VideoType == VideoType.Iso)
                 {
-                    if (!string.IsNullOrWhiteSpace(i.Path) && locationType != LocationType.Remote && locationType != LocationType.Virtual)
+                    if (!string.IsNullOrWhiteSpace(media.Path) && locationType != LocationType.Remote && locationType != LocationType.Virtual)
                     {
-                        info.Container = System.IO.Path.GetExtension(i.Path).TrimStart('.');
+                        info.Container = System.IO.Path.GetExtension(media.Path).TrimStart('.');
                     }
                 }
             }
 
-            info.Bitrate = i.TotalBitrate;
+            info.Bitrate = media.TotalBitrate;
             info.InferTotalBitrate();
 
             return info;