53 lines
1.4 KiB
C++
53 lines
1.4 KiB
C++
/*
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* Copyright 2016 Nu-book Inc.
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* Copyright 2016 ZXing authors
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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 "ByteArray.h"
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#include <vector>
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namespace ZXing::QRCode {
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class Version;
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enum class ErrorCorrectionLevel;
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/**
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* <p>Encapsulates a block of data within a QR Code. QR Codes may split their data into
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* multiple blocks, each of which is a unit of data and error-correction codewords. Each
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* is represented by an instance of this class.</p>
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*
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* @author Sean Owen
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*/
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class DataBlock
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{
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public:
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int numDataCodewords() const { return _numDataCodewords; }
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const ByteArray& codewords() const { return _codewords; }
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ByteArray& codewords() { return _codewords; }
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/**
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* <p>When QR Codes use multiple data blocks, they are actually interleaved.
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* That is, the first byte of data block 1 to n is written, then the second bytes, and so on. This
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* method will separate the data into original blocks.</p>
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*
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* @param rawCodewords bytes as read directly from the QR Code
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* @param version version of the QR Code
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* @param ecLevel error-correction level of the QR Code
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* @return DataBlocks containing original bytes, "de-interleaved" from representation in the
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* QR Code
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*/
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static std::vector<DataBlock> GetDataBlocks(const ByteArray& rawCodewords, const Version& version, ErrorCorrectionLevel ecLevel);
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private:
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int _numDataCodewords = 0;
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ByteArray _codewords;
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};
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} // namespace ZXing::QRCode
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