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73 lines
2.5 KiB
73 lines
2.5 KiB
// Copyright (c) 2020, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include <QImage>
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#include <png.h>
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struct quirc;
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class QrDecoder
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{
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public:
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QrDecoder(const QrDecoder &) = delete;
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QrDecoder &operator=(const QrDecoder &) = delete;
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QrDecoder();
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~QrDecoder();
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std::vector<std::string> decode(const QImage &image);
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std::vector<std::string> decodePNG(QString pngPath);
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private:
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/* Dump decoded information on stdout. */
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void dump_data(const struct quirc_data *data);
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/* Dump a grid cell map on stdout. */
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void dump_cells(const struct quirc_code *code);
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/* Check if a file is a PNG image.
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*
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* returns 1 if the given file is a PNG and 0 otherwise.
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*/
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int check_if_png(const char *filename);
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/* Read a PNG image into the decoder.
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*
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* Note that you must call quirc_end() if the function returns
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* successfully (0).
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*/
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int load_png(struct quirc *q, const char *filename);
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private:
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std::vector<std::string> decodeGrayscale8(const QImage &image);
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private:
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quirc *m_qr;
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};
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