// 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_PDF417ECERRORCORRECTION_H_
#define _BC_PDF417ECERRORCORRECTION_H_
class CBC_PDF417ECModulusGF;
class CBC_PDF417ECModulusPoly;
class CBC_PDF417ECErrorCorrection
{
public:
    CBC_PDF417ECErrorCorrection();
    virtual ~CBC_PDF417ECErrorCorrection();
    static void Initialize(int32_t &e);
    static void Finalize();
    static int32_t decode(CFX_Int32Array &received, int32_t numECCodewords, CFX_Int32Array &erasures, int32_t &e);
private:
    static CBC_PDF417ECModulusGF* m_field;
    static CFX_PtrArray* runEuclideanAlgorithm(CBC_PDF417ECModulusPoly* a, CBC_PDF417ECModulusPoly* b, int32_t R, int32_t &e);
    static CFX_Int32Array* findErrorLocations(CBC_PDF417ECModulusPoly* errorLocator, int32_t &e);
    static CFX_Int32Array* findErrorMagnitudes(CBC_PDF417ECModulusPoly* errorEvaluator, CBC_PDF417ECModulusPoly* errorLocator, CFX_Int32Array &errorLocations, int32_t &e);
};
#endif