82 lines
2.6 KiB
C
82 lines
2.6 KiB
C
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// -*- mode:c++; tab-width:2; indent-tabs-mode:nil; c-basic-offset:2 -*-
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#ifndef __ONED_READER_H__
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#define __ONED_READER_H__
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/*
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* OneDReader.h
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* ZXing
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*
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* Copyright 2010 ZXing authors All rights reserved.
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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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#include <zxing/Reader.h>
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namespace zxing {
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namespace oned {
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class OneDReader : public Reader {
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private:
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Ref<Result> doDecode(Ref<BinaryBitmap> image, DecodeHints hints);
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protected:
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static const int INTEGER_MATH_SHIFT = 8;
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struct Range {
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private:
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int data[2];
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public:
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Range() {}
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Range(int zero, int one) {
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data[0] = zero;
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data[1] = one;
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}
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int& operator [] (int index) {
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return data[index];
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}
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int const& operator [] (int index) const {
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return data[index];
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}
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};
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static int patternMatchVariance(std::vector<int>& counters,
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std::vector<int> const& pattern,
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int maxIndividualVariance);
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static int patternMatchVariance(std::vector<int>& counters,
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int const pattern[],
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int maxIndividualVariance);
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protected:
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static const int PATTERN_MATCH_RESULT_SCALE_FACTOR = 1 << INTEGER_MATH_SHIFT;
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public:
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OneDReader();
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virtual Ref<Result> decode(Ref<BinaryBitmap> image, DecodeHints hints);
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// Implementations must not throw any exceptions. If a barcode is not found on this row,
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// a empty ref should be returned e.g. return Ref<Result>();
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virtual Ref<Result> decodeRow(int rowNumber, Ref<BitArray> row) = 0;
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static void recordPattern(Ref<BitArray> row,
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int start,
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std::vector<int>& counters);
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virtual ~OneDReader();
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};
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}
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}
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#endif
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