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// SPDX-License-Identifier: GPL-2.0-or-later
#include <exiv2/exiv2.hpp>
#include <iostream>
void write(const std::string& file, Exiv2::ExifData& ed);
void print(const std::string& file);
// *****************************************************************************
// Main
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 file(argv[1]);
auto image = Exiv2::ImageFactory::open(file);
image->readMetadata();
Exiv2::ExifData& ed = image->exifData();
if (ed.empty()) {
std::string error = file + ": No Exif data found in the file";
throw Exiv2::Error(Exiv2::ErrorCode::kerErrorMessage, error);
}
std::cout << "Copy construction, non-intrusive changes\n";
Exiv2::ExifData ed1(ed);
ed1["Exif.Image.DateTime"] = "Sunday, 11am";
ed1["Exif.Image.Orientation"] = static_cast<uint16_t>(2);
ed1["Exif.Photo.DateTimeOriginal"] = "Sunday, 11am";
ed1["Exif.Photo.MeteringMode"] = static_cast<uint16_t>(1);
ed1["Exif.Iop.InteroperabilityIndex"] = "123";
// ed1["Exif.Thumbnail.Orientation"] = uint16_t(2);
write(file, ed1);
print(file);
std::cout << "----------------------------------------------\n";
std::cout << "Copy construction, intrusive changes\n";
Exiv2::ExifData ed2(ed);
ed2["Exif.Image.DateTime"] = "Sunday, 11am and ten minutes";
ed2["Exif.Image.Orientation"] = "2 3 4 5";
ed2["Exif.Photo.DateTimeOriginal"] = "Sunday, 11am and ten minutes";
ed2["Exif.Photo.MeteringMode"] = "1 2 3 4 5 6";
ed2["Exif.Iop.InteroperabilityIndex"] = "1234";
ed2["Exif.Thumbnail.Orientation"] = "2 3 4 5 6";
write(file, ed2);
print(file);
std::cout << "----------------------------------------------\n";
std::cout << "Assignment, non-intrusive changes\n";
Exiv2::ExifData ed3;
ed3["Exif.Iop.InteroperabilityVersion"] = "Test 6 Iop tag";
ed3["Exif.Thumbnail.Artist"] = "Test 6 Ifd1 tag";
ed3 = ed;
ed3["Exif.Image.DateTime"] = "Sunday, 11am";
ed3["Exif.Image.Orientation"] = static_cast<uint16_t>(2);
ed3["Exif.Photo.DateTimeOriginal"] = "Sunday, 11am";
ed3["Exif.Photo.MeteringMode"] = static_cast<uint16_t>(1);
ed3["Exif.Iop.InteroperabilityIndex"] = "123";
ed3["Exif.Thumbnail.Orientation"] = static_cast<uint16_t>(2);
write(file, ed3);
print(file);
std::cout << "----------------------------------------------\n";
std::cout << "Assignment, intrusive changes\n";
Exiv2::ExifData ed4;
ed4["Exif.Iop.InteroperabilityVersion"] = "Test 6 Iop tag";
ed4["Exif.Thumbnail.Artist"] = "Test 6 Ifd1 tag";
ed4 = ed;
ed4["Exif.Image.DateTime"] = "Sunday, 11am and ten minutes";
ed4["Exif.Image.Orientation"] = "2 3 4 5";
ed4["Exif.Photo.DateTimeOriginal"] = "Sunday, 11am and ten minutes";
ed4["Exif.Photo.MeteringMode"] = static_cast<uint16_t>(1);
ed4["Exif.Iop.InteroperabilityIndex"] = "123";
ed4["Exif.Thumbnail.Orientation"] = static_cast<uint16_t>(2);
write(file, ed4);
print(file);
return EXIT_SUCCESS;
} catch (Exiv2::Error& e) {
std::cout << "Caught Exiv2 exception '" << e << "'\n";
return EXIT_FAILURE;
}
}
void write(const std::string& file, Exiv2::ExifData& ed) {
auto image = Exiv2::ImageFactory::open(file);
image->setExifData(ed);
image->writeMetadata();
}
void print(const std::string& file) {
auto image = Exiv2::ImageFactory::open(file);
image->readMetadata();
Exiv2::ExifData& ed = image->exifData();
auto end = ed.end();
for (auto i = ed.begin(); i != end; ++i) {
std::cout << std::setw(45) << std::setfill(' ') << std::left << i->key() << " "
<< "0x" << std::setw(4) << std::setfill('0') << std::right << std::hex << i->tag() << " " << std::setw(12)
<< std::setfill(' ') << std::left << i->ifdName() << " " << std::setw(9) << std::setfill(' ') << std::left
<< i->typeName() << " " << std::dec << std::setw(3) << std::setfill(' ') << std::right << i->count()
<< " " << std::dec << i->toString() << "\n";
}
}
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