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70 lines
2.3 KiB
C++
70 lines
2.3 KiB
C++
// ***************************************************************** -*- C++ -*-
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// prevtest.cpp
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// Test access to preview images
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/*
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* Copyright (C) 2004-2021 Exiv2 authors
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* This program is part of the Exiv2 distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301 USA.
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*/
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#include <exiv2/exiv2.hpp>
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#include <string>
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#include <iostream>
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#include <cassert>
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int main(int argc, char* const argv[])
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try {
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Exiv2::XmpParser::initialize();
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::atexit(Exiv2::XmpParser::terminate);
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#ifdef EXV_ENABLE_BMFF
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Exiv2::enableBMFF();
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#endif
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if (argc != 2) {
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std::cout << "Usage: " << argv[0] << " file\n";
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return 1;
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}
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std::string filename(argv[1]);
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Exiv2::Image::UniquePtr image = Exiv2::ImageFactory::open(filename);
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assert(image.get() != 0);
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image->readMetadata();
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Exiv2::PreviewManager loader(*image);
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Exiv2::PreviewPropertiesList list = loader.getPreviewProperties();
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for (Exiv2::PreviewPropertiesList::iterator pos = list.begin(); pos != list.end(); pos++) {
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std::cout << pos->mimeType_
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<< " preview, type " << pos->id_ << ", "
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<< pos->size_ << " bytes, "
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<< pos->width_ << 'x' << pos->height_ << " pixels"
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<< "\n";
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Exiv2::PreviewImage preview = loader.getPreviewImage(*pos);
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preview.writeFile(filename + "_"
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+ Exiv2::toString(pos->width_) + "x"
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+ Exiv2::toString(pos->height_));
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}
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// Cleanup
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Exiv2::XmpParser::terminate();
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return 0;
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}
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catch (Exiv2::AnyError& e) {
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std::cout << "Caught Exiv2 exception '" << e << "'\n";
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return -1;
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}
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