1 // Copyright 2014 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6 
7 #ifndef _BC_ERRORCORRECTION_H_
8 #define _BC_ERRORCORRECTION_H_
9 class CBC_SymbolInfo;
10 class CBC_ErrorCorrection {
11  public:
12   CBC_ErrorCorrection();
13   virtual ~CBC_ErrorCorrection();
14   static void Initialize();
15   static void Finalize();
16   static CFX_WideString encodeECC200(CFX_WideString codewords,
17                                      CBC_SymbolInfo* symbolInfo,
18                                      int32_t& e);
19 
20  private:
21   static int32_t FACTOR_SETS[];
22   static int32_t FACTORS[][100];
23   static int32_t MODULO_VALUE;
24   static int32_t LOG[256];
25   static int32_t ALOG[256];
26 
27  private:
28   static CFX_WideString createECCBlock(CFX_WideString codewords,
29                                        int32_t numECWords,
30                                        int32_t& e);
31   static CFX_WideString createECCBlock(CFX_WideString codewords,
32                                        int32_t start,
33                                        int32_t len,
34                                        int32_t numECWords,
35                                        int32_t& e);
36 };
37 #endif
38