91 lines
2.6 KiB
C++
91 lines
2.6 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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#include "MultiFormatReader.h"
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#include "BarcodeFormat.h"
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#include "BinaryBitmap.h"
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#include "DecodeHints.h"
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#include "aztec/AZReader.h"
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#include "datamatrix/DMReader.h"
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#include "maxicode/MCReader.h"
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#include "oned/ODReader.h"
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#include "pdf417/PDFReader.h"
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#include "qrcode/QRReader.h"
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#include <memory>
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namespace ZXing {
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MultiFormatReader::MultiFormatReader(const DecodeHints& hints) : _hints(hints)
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{
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auto formats = hints.formats().empty() ? BarcodeFormat::Any : hints.formats();
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// Put linear readers upfront in "normal" mode
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if (formats.testFlags(BarcodeFormat::LinearCodes) && !hints.tryHarder())
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_readers.emplace_back(new OneD::Reader(hints));
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if (formats.testFlags(BarcodeFormat::QRCode | BarcodeFormat::MicroQRCode))
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_readers.emplace_back(new QRCode::Reader(hints, true));
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if (formats.testFlag(BarcodeFormat::DataMatrix))
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_readers.emplace_back(new DataMatrix::Reader(hints, true));
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if (formats.testFlag(BarcodeFormat::Aztec))
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_readers.emplace_back(new Aztec::Reader(hints, true));
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if (formats.testFlag(BarcodeFormat::PDF417))
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_readers.emplace_back(new Pdf417::Reader(hints));
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if (formats.testFlag(BarcodeFormat::MaxiCode))
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_readers.emplace_back(new MaxiCode::Reader(hints));
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// At end in "try harder" mode
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if (formats.testFlags(BarcodeFormat::LinearCodes) && hints.tryHarder())
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_readers.emplace_back(new OneD::Reader(hints));
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}
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MultiFormatReader::~MultiFormatReader() = default;
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Result
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MultiFormatReader::read(const BinaryBitmap& image) const
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{
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Result r;
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for (const auto& reader : _readers) {
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r = reader->decode(image);
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if (r.isValid())
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return r;
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}
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return _hints.returnErrors() ? r : Result();
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}
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Results MultiFormatReader::readMultiple(const BinaryBitmap& image, int maxSymbols) const
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{
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std::vector<Result> res;
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for (const auto& reader : _readers) {
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if (image.inverted() && !reader->supportsInversion)
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continue;
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auto r = reader->decode(image, maxSymbols);
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if (!_hints.returnErrors()) {
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//TODO: C++20 res.erase_if()
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auto it = std::remove_if(res.begin(), res.end(), [](auto&& r) { return !r.isValid(); });
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res.erase(it, res.end());
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}
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maxSymbols -= Size(r);
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res.insert(res.end(), std::move_iterator(r.begin()), std::move_iterator(r.end()));
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if (maxSymbols <= 0)
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break;
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}
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// sort results based on their position on the image
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std::sort(res.begin(), res.end(), [](const Result& l, const Result& r) {
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auto lp = l.position().topLeft();
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auto rp = r.position().topLeft();
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return lp.y < rp.y || (lp.y == rp.y && lp.x < rp.x);
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});
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return res;
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}
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} // ZXing
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