BC_ReedSolomonGF256Poly.h

Go to the documentation of this file.

// Copyright 2014 The PDFium Authors
// 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 FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256POLY_H_
#define FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256POLY_H_
 
#include <memory>
#include <vector>
 
#include "core/fxcrt/unowned_ptr.h"
 
class CBC_ReedSolomonGF256;
 
class CBC_ReedSolomonGF256Poly final {
 public:
  CBC_ReedSolomonGF256Poly(CBC_ReedSolomonGF256* field,
                           const std::vector<int32_t>& coefficients);
  ~CBC_ReedSolomonGF256Poly();
 
  int32_t GetCoefficients(int32_t degree) const;
  const std::vector<int32_t>& GetCoefficients() const;
  int32_t GetDegree() const;
  bool IsZero() const;
  std::unique_ptr<CBC_ReedSolomonGF256Poly> AddOrSubtract(
      const CBC_ReedSolomonGF256Poly* other);
  std::unique_ptr<CBC_ReedSolomonGF256Poly> Multiply(
      const CBC_ReedSolomonGF256Poly* other);
  std::unique_ptr<CBC_ReedSolomonGF256Poly> MultiplyByMonomial(
      int32_t degree,
      int32_t coefficient) const;
  std::unique_ptr<CBC_ReedSolomonGF256Poly> Divide(
      const CBC_ReedSolomonGF256Poly* other);
  std::unique_ptr<CBC_ReedSolomonGF256Poly> Clone() const;
 
 private:
  UnownedPtr<CBC_ReedSolomonGF256> const m_field;
  std::vector<int32_t> m_coefficients;
};
 
#endif  // FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256POLY_H_