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diff --git a/Emby.Server.Implementations/TextEncoding/UniversalDetector/DetectionConfidence.cs b/Emby.Server.Implementations/TextEncoding/UniversalDetector/DetectionConfidence.cs
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+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *          Rudi Pettazzi <rudi.pettazzi@gmail.com> (C# port)
+ * 
+ * Alternatively, the contents of this file may be used under the terms of
+ * either of the GNU General Public License Version 2 or later (the "GPL"),
+ * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+namespace UniversalDetector
+{
+    /// <summary>
+    /// Indicate how confident the detection module about the return result.
+    ///     
+    ///  NoAnswerYet: the detector have not find out a answer yet based on 
+    ///  the data it received.
+    /// 
+    ///  BestAnswer: the answer the detector returned is the best one within 
+    ///     the knowledge of the detector. In other words, the test to all 
+    ///     other candidates fail.
+    ///     For example, the (Shift_JIS/EUC-JP/ISO-2022-JP) detection
+    ///     module may return this with answer "Shift_JIS " if it receive 
+    ///     bytes > 0x80 (which make ISO-2022-JP test failed) and byte 
+    ///     0x82 (which may EUC-JP test failed)
+    ///
+    ///  SureAnswer: the detector is 100% sure about the  answer.
+    ///  
+    ///  Example 1: the Shift_JIS/ISO-2022-JP/EUC-JP detector return
+    ///    this w/ ISO-2022-JP when it hit one of the following ESC seq
+    ///     ESC ( J
+    ///     ESC $ @
+    ///     ESC $ B
+    /// 
+    ///  Example 2: the detector which can detect UCS2 return w/ UCS2
+    ///     when the first 2 byte are BOM mark.
+    ///  Example 3: the Korean detector return ISO-2022-KR when it
+    ///     hit ESC $ ) C
+    /// </summary>
+    public enum DetectionConfidence
+    {
+        NoAnswerYet = 0,
+        BestAnswer,
+        SureAnswer,
+        NoAnswerMatch
+    }
+}