#ifndef __MODULUS_GF_PDF_H__
#define __MODULUS_GF_PDF_H__
/*
 * Copyright 2012 ZXing authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * 2012-09-17 HFN translation from Java into C++
 */

#include <zxing/common/Counted.h>
#include <zxing/common/Array.h>
#include <zxing/common/DecoderResult.h>
#include <zxing/common/BitMatrix.h>

namespace zxing {
    namespace pdf417 {
        namespace decoder {
            namespace ec {

                class ModulusPoly;

                /**
                 * <p>A field based on powers of a generator integer, modulo some modulus.</p>
                 *
                 * @author Sean Owen
                 * @see com.google.zxing.common.reedsolomon.GenericGF
                 */
                class ModulusGF {

                public:
                    static ModulusGF PDF417_GF;

                private:
                    ArrayRef<int> expTable_;
                    ArrayRef<int> logTable_;
                    Ref<ModulusPoly> zero_;
                    Ref<ModulusPoly> one_;
                    int modulus_;

                public:
                    ModulusGF(int modulus, int generator);
                    Ref<ModulusPoly> getZero();
                    Ref<ModulusPoly> getOne();
                    Ref<ModulusPoly> buildMonomial(int degree, int coefficient);

                    int add(int a, int b);
                    int subtract(int a, int b);
                    int exp(int a);
                    int log(int a);
                    int inverse(int a);
                    int multiply(int a, int b);
                    int getSize();

                };

            }
        }
    }
}

#endif /* __MODULUS_GF_PDF_H__ */