summaryrefslogtreecommitdiff
path: root/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h
blob: d414f13d3c7dedef92d033673a47d37c8911d0f7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com

#ifndef _BC_REEDSOLOMONGF256_H_
#define _BC_REEDSOLOMONGF256_H_
class CBC_ReedSolomonGF256Poly;
class CBC_ReedSolomonGF256 {
 public:
  static void Initialize();
  static void Finalize();
  static CBC_ReedSolomonGF256* QRCodeFild;
  static CBC_ReedSolomonGF256* DataMatrixField;
  CBC_ReedSolomonGF256(int32_t primitive);
  virtual ~CBC_ReedSolomonGF256();
  CBC_ReedSolomonGF256Poly* GetZero();
  CBC_ReedSolomonGF256Poly* GetOne();
  CBC_ReedSolomonGF256Poly* BuildMonomial(int32_t degree,
                                          int32_t coefficient,
                                          int32_t& e);
  static int32_t AddOrSubtract(int32_t a, int32_t b);
  int32_t Exp(int32_t a);
  int32_t Log(int32_t a, int32_t& e);
  int32_t Inverse(int32_t a, int32_t& e);
  int32_t Multiply(int32_t a, int32_t b);
  virtual void Init();

 private:
  int32_t m_expTable[256];
  int32_t m_logTable[256];
  CBC_ReedSolomonGF256Poly* m_zero;
  CBC_ReedSolomonGF256Poly* m_one;
};
#endif