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_READSOLOMONGF256POLY_H_
8 #define _BC_READSOLOMONGF256POLY_H_
9 class CBC_ReedSolomonGF256;
10 class CBC_ReedSolomonGF256Poly {
11  public:
12   CBC_ReedSolomonGF256Poly(CBC_ReedSolomonGF256* field, int32_t coefficients);
13   CBC_ReedSolomonGF256Poly();
14   virtual ~CBC_ReedSolomonGF256Poly();
15   int32_t GetCoefficients(int32_t degree);
16   CFX_Int32Array* GetCoefficients();
17   int32_t GetDegree();
18   FX_BOOL IsZero();
19   int32_t EvaluateAt(int32_t a);
20   CBC_ReedSolomonGF256Poly* AddOrSubtract(CBC_ReedSolomonGF256Poly* other,
21                                           int32_t& e);
22   CBC_ReedSolomonGF256Poly* Multiply(CBC_ReedSolomonGF256Poly* other,
23                                      int32_t& e);
24   CBC_ReedSolomonGF256Poly* Multiply(int32_t scalar, int32_t& e);
25   CBC_ReedSolomonGF256Poly* MultiplyByMonomial(int32_t degree,
26                                                int32_t coefficient,
27                                                int32_t& e);
28   CFX_PtrArray* Divide(CBC_ReedSolomonGF256Poly* other, int32_t& e);
29   CBC_ReedSolomonGF256Poly* Clone(int32_t& e);
30   virtual void Init(CBC_ReedSolomonGF256* field,
31                     CFX_Int32Array* coefficients,
32                     int32_t& e);
33 
34  private:
35   CBC_ReedSolomonGF256* m_field;
36   CFX_Int32Array m_coefficients;
37 };
38 #endif
39