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/*
* Copyright 2016 Nu-book Inc.
* Copyright 2016 ZXing authors
*/
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include "ByteArray.h"
#include <vector>
namespace ZXing::QRCode {
class Version;
enum class ErrorCorrectionLevel;
/**
* <p>Encapsulates a block of data within a QR Code. QR Codes may split their data into
* multiple blocks, each of which is a unit of data and error-correction codewords. Each
* is represented by an instance of this class.</p>
*
* @author Sean Owen
*/
class DataBlock
{
public:
int numDataCodewords() const { return _numDataCodewords; }
const ByteArray& codewords() const { return _codewords; }
ByteArray& codewords() { return _codewords; }
/**
* <p>When QR Codes use multiple data blocks, they are actually interleaved.
* That is, the first byte of data block 1 to n is written, then the second bytes, and so on. This
* method will separate the data into original blocks.</p>
*
* @param rawCodewords bytes as read directly from the QR Code
* @param version version of the QR Code
* @param ecLevel error-correction level of the QR Code
* @return DataBlocks containing original bytes, "de-interleaved" from representation in the
* QR Code
*/
static std::vector<DataBlock> GetDataBlocks(const ByteArray& rawCodewords, const Version& version, ErrorCorrectionLevel ecLevel);
private:
int _numDataCodewords = 0;
ByteArray _codewords;
};
} // namespace ZXing::QRCode