Webserver: Added a threshold to the config which decides at how many song we stop sending covers on get-all-songs requests.

Vocaluxe/Base/CConfig.cs

@@ -163,6 +163,7 @@ namespace Vocaluxe.Base
             [DefaultValue(EOffOn.TR_CONFIG_OFF)] public EOffOn ServerActive;
             [DefaultValue(EOffOn.TR_CONFIG_OFF)] public EOffOn ServerEncryption;
             [DefaultValue(3000)] public int ServerPort;
+            [DefaultValue(70)] public int SongCountCoverThreshold;
         }
 #pragma warning restore 649
         // ReSharper restore UnassignedField.Global
@@ -495,6 +496,8 @@ namespace Vocaluxe.Base
                     return "Server Encryption On/Off: " + CHelper.ListStrings(Enum.GetNames(typeof(EOffOn)));
                 case "ServerPort":
                     return "Server Port (default: 3000) [1..65535]";
+                case "SongCountCoverThreshold":
+                    return "Threshold of songs for that covers will not longer be included in get-all-songs-requests (e.g. song list) (default: 70) [-1..65535] -1 => always deliver covers";
                 case "Stretch":
                     return "Stretch view to full window size: " + CHelper.ListStrings(Enum.GetNames(typeof(EOffOn)));
                 default:

Vocaluxe/Base/Server/CVocaluxeServer.cs

@@ -628,11 +628,13 @@ namespace Vocaluxe.Base.Server
         private static SSongInfo[] songInfoCache = null;
         public static SSongInfo[] GetAllSongs()
         {
+            bool sendCovers = CConfig.Config.Server.SongCountCoverThreshold == -1 || CConfig.Config.Server.SongCountCoverThreshold > CSongs.Songs.Count;
+
             if (songInfoCache == null)
             {
                 List<CSong> songs = CSongs.Songs;
                 songInfoCache = (from s in songs
-                    select _GetSongInfo(s, false)).AsParallel().ToArray<SSongInfo>();
+                    select _GetSongInfo(s, sendCovers)).AsParallel().ToArray<SSongInfo>();
             }
             
             return songInfoCache;