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// 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
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