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// SPDX-License-Identifier: GPL-2.0-or-later
// Test access to preview images
#include <exiv2/exiv2.hpp>
#include <iostream>
int main(int argc, char* const argv[]) try {
Exiv2::XmpParser::initialize();
::atexit(Exiv2::XmpParser::terminate);
if (argc != 2) {
std::cout << "Usage: " << argv[0] << " file\n";
return EXIT_FAILURE;
}
std::string filename(argv[1]);
auto image = Exiv2::ImageFactory::open(filename);
image->readMetadata();
Exiv2::PreviewManager loader(*image);
Exiv2::PreviewPropertiesList list = loader.getPreviewProperties();
for (auto&& pos : list) {
std::cout << pos.mimeType_ << " preview, type " << pos.id_ << ", " << pos.size_ << " bytes, " << pos.width_ << 'x'
<< pos.height_ << " pixels"
<< "\n";
Exiv2::PreviewImage preview = loader.getPreviewImage(pos);
auto s = preview.writeFile(filename + "_" + std::to_string(pos.width_) + "x" + std::to_string(pos.height_));
if (s == 0)
return EXIT_FAILURE;
}
// Cleanup
Exiv2::XmpParser::terminate();
return EXIT_SUCCESS;
} catch (Exiv2::Error& e) {
std::cout << "Caught Exiv2 exception '" << e << "'\n";
return EXIT_FAILURE;
}
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