73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
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#ifndef __MODULUS_GF_PDF_H__
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#define __MODULUS_GF_PDF_H__
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/*
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* Copyright 2012 ZXing authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* 2012-09-17 HFN translation from Java into C++
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*/
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#include <zxing/common/Counted.h>
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#include <zxing/common/Array.h>
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#include <zxing/common/DecoderResult.h>
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#include <zxing/common/BitMatrix.h>
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namespace zxing {
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namespace pdf417 {
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namespace decoder {
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namespace ec {
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class ModulusPoly;
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/**
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* <p>A field based on powers of a generator integer, modulo some modulus.</p>
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*
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* @author Sean Owen
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* @see com.google.zxing.common.reedsolomon.GenericGF
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*/
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class ModulusGF {
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public:
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static ModulusGF PDF417_GF;
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private:
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ArrayRef<int> expTable_;
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ArrayRef<int> logTable_;
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Ref<ModulusPoly> zero_;
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Ref<ModulusPoly> one_;
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int modulus_;
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public:
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ModulusGF(int modulus, int generator);
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Ref<ModulusPoly> getZero();
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Ref<ModulusPoly> getOne();
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Ref<ModulusPoly> buildMonomial(int degree, int coefficient);
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int add(int a, int b);
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int subtract(int a, int b);
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int exp(int a);
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int log(int a);
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int inverse(int a);
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int multiply(int a, int b);
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int getSize();
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};
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}
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}
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}
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}
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#endif /* __MODULUS_GF_PDF_H__ */
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