update subtitle methods

MediaBrowser.Model/MediaBrowser.Model.csproj

@@ -169,6 +169,8 @@
     <Compile Include="Configuration\MetadataPluginType.cs" />
     <Compile Include="Dlna\SubtitleProfile.cs" />
     <Compile Include="MediaInfo\MediaProtocol.cs" />
+    <Compile Include="MediaInfo\SubtitleTrackEvent.cs" />
+    <Compile Include="MediaInfo\SubtitleTrackInfo.cs" />
     <Compile Include="Net\HttpResponse.cs" />
     <Compile Include="Net\MimeTypes.cs" />
     <Compile Include="Notifications\NotificationOption.cs" />

MediaBrowser.Model/MediaInfo/SubtitleTrackEvent.cs

@@ -0,0 +1,11 @@
+
+namespace MediaBrowser.Model.MediaInfo
+{
+    public class SubtitleTrackEvent
+    {
+        public string Id { get; set; }
+        public string Text { get; set; }
+        public long StartPositionTicks { get; set; }
+        public long EndPositionTicks { get; set; }
+    }
+}

MediaBrowser.Model/MediaInfo/SubtitleTrackInfo.cs

@@ -0,0 +1,14 @@
+using System.Collections.Generic;
+
+namespace MediaBrowser.Model.MediaInfo
+{
+    public class SubtitleTrackInfo
+    {
+        public List<SubtitleTrackEvent> TrackEvents { get; set; }
+
+        public SubtitleTrackInfo()
+        {
+            TrackEvents = new List<SubtitleTrackEvent>();
+        }
+    }
+}