// 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 |