xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h

// 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 XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256POLY_H_
#define XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256POLY_H_

#include "core/fxcrt/include/fx_basic.h"

class CBC_ReedSolomonGF256;

class CBC_ReedSolomonGF256Poly final {
 public:
  CBC_ReedSolomonGF256Poly(CBC_ReedSolomonGF256* field, int32_t coefficients);
  CBC_ReedSolomonGF256Poly();
  ~CBC_ReedSolomonGF256Poly();
  void Init(CBC_ReedSolomonGF256* field,
            CFX_Int32Array* coefficients,
            int32_t& e);

  int32_t GetCoefficients(int32_t degree);
  CFX_Int32Array* GetCoefficients();
  int32_t GetDegree();
  FX_BOOL IsZero();
  int32_t EvaluateAt(int32_t a);
  CBC_ReedSolomonGF256Poly* AddOrSubtract(CBC_ReedSolomonGF256Poly* other,
                                          int32_t& e);
  CBC_ReedSolomonGF256Poly* Multiply(CBC_ReedSolomonGF256Poly* other,
                                     int32_t& e);
  CBC_ReedSolomonGF256Poly* Multiply(int32_t scalar, int32_t& e);
  CBC_ReedSolomonGF256Poly* MultiplyByMonomial(int32_t degree,
                                               int32_t coefficient,
                                               int32_t& e);
  CFX_ArrayTemplate<CBC_ReedSolomonGF256Poly*>* Divide(
      CBC_ReedSolomonGF256Poly* other,
      int32_t& e);

  CBC_ReedSolomonGF256Poly* Clone(int32_t& e);

 private:
  CBC_ReedSolomonGF256* m_field;
  CFX_Int32Array m_coefficients;
};

#endif  // XFA_FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256POLY_H_