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 FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256POLY_H_ 8 #define FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256POLY_H_ 9 10 #include <memory> 11 #include <vector> 12 13 #include "core/fxcrt/unowned_ptr.h" 14 15 class CBC_ReedSolomonGF256; 16 17 class CBC_ReedSolomonGF256Poly final { 18 public: 19 CBC_ReedSolomonGF256Poly(CBC_ReedSolomonGF256* field, int32_t coefficients); 20 CBC_ReedSolomonGF256Poly(); 21 ~CBC_ReedSolomonGF256Poly(); 22 bool Init(CBC_ReedSolomonGF256* field, 23 const std::vector<int32_t>* coefficients); 24 25 int32_t GetCoefficients(int32_t degree) const; 26 const std::vector<int32_t>& GetCoefficients() const; 27 int32_t GetDegree() const; 28 bool IsZero() const; 29 int32_t EvaluateAt(int32_t a); 30 std::unique_ptr<CBC_ReedSolomonGF256Poly> AddOrSubtract( 31 const CBC_ReedSolomonGF256Poly* other); 32 std::unique_ptr<CBC_ReedSolomonGF256Poly> Multiply( 33 const CBC_ReedSolomonGF256Poly* other); 34 std::unique_ptr<CBC_ReedSolomonGF256Poly> Multiply(int32_t scalar); 35 std::unique_ptr<CBC_ReedSolomonGF256Poly> MultiplyByMonomial( 36 int32_t degree, 37 int32_t coefficient) const; 38 std::unique_ptr<CBC_ReedSolomonGF256Poly> Divide( 39 const CBC_ReedSolomonGF256Poly* other); 40 std::unique_ptr<CBC_ReedSolomonGF256Poly> Clone() const; 41 42 private: 43 UnownedPtr<CBC_ReedSolomonGF256> m_field; 44 std::vector<int32_t> m_coefficients; 45 }; 46 47 #endif // FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256POLY_H_ 48