55 lines
2.0 KiB
C
55 lines
2.0 KiB
C
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// -*- mode:c++; tab-width:2; indent-tabs-mode:nil; c-basic-offset:2 -*-
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#ifndef __ITF_READER_H__
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#define __ITF_READER_H__
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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/oned/OneDReader.h>
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#include <zxing/common/BitArray.h>
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#include <zxing/Result.h>
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namespace zxing {
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namespace oned {
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class ITFReader : public OneDReader {
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private:
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enum { MAX_AVG_VARIANCE = (unsigned int)(PATTERN_MATCH_RESULT_SCALE_FACTOR * 420 / 1000) };
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enum { MAX_INDIVIDUAL_VARIANCE = (int)(PATTERN_MATCH_RESULT_SCALE_FACTOR * 780 / 1000) };
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// Stores the actual narrow line width of the image being decoded.
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int narrowLineWidth;
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Range decodeStart(Ref<BitArray> row);
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Range decodeEnd(Ref<BitArray> row);
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static void decodeMiddle(Ref<BitArray> row, int payloadStart, int payloadEnd, std::string& resultString);
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void validateQuietZone(Ref<BitArray> row, int startPattern);
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static int skipWhiteSpace(Ref<BitArray> row);
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static Range findGuardPattern(Ref<BitArray> row, int rowOffset, std::vector<int> const& pattern);
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static int decodeDigit(std::vector<int>& counters);
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void append(char* s, char c);
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public:
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Ref<Result> decodeRow(int rowNumber, Ref<BitArray> row);
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ITFReader();
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~ITFReader();
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};
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}
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}
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#endif
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