67 lines
1.4 KiB
C
67 lines
1.4 KiB
C
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/*
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* Copyright 2016 Nu-book Inc.
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* Copyright 2016 ZXing authors
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* Copyright 2021 Axel Waggershauser
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*/
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// SPDX-License-Identifier: Apache-2.0
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#pragma once
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#include "ImageView.h"
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#include <cstdint>
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#include <memory>
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#include <vector>
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namespace ZXing {
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class BitMatrix;
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using PatternRow = std::vector<uint16_t>;
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/**
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* This class is the core bitmap class used by ZXing to represent 1 bit data. Reader objects
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* accept a BinaryBitmap and attempt to decode it.
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*/
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class BinaryBitmap
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{
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struct Cache;
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std::unique_ptr<Cache> _cache;
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bool _inverted = false;
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bool _closed = false;
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protected:
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const ImageView _buffer;
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/**
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* Converts a 2D array of luminance data to 1 bit (true means black).
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*
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* @return The 2D array of bits for the image, nullptr on error.
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*/
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virtual std::shared_ptr<const BitMatrix> getBlackMatrix() const = 0;
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BitMatrix binarize(const uint8_t threshold) const;
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public:
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BinaryBitmap(const ImageView& buffer);
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virtual ~BinaryBitmap();
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int width() const { return _buffer.width(); }
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int height() const { return _buffer.height(); }
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/**
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* Converts one row of luminance data to a vector of ints denoting the widths of the bars and spaces.
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*/
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virtual bool getPatternRow(int row, int rotation, PatternRow& res) const = 0;
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const BitMatrix* getBitMatrix() const;
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void invert();
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bool inverted() const { return _inverted; }
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void close();
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bool closed() const { return _closed; }
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};
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} // ZXing
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