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78 lines
2.6 KiB
C++
78 lines
2.6 KiB
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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// ***************************************************************** -*- C++ -*-
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// Test for large (>65535 bytes) IPTC buffer
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// ***************************************************************** -*- C++ -*-
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#include <exiv2/exiv2.hpp>
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#include <iostream>
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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 != 3) {
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std::cout << "Usage: " << argv[0] << " image datafile\n";
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return EXIT_FAILURE;
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}
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std::string file(argv[1]);
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std::string data(argv[2]);
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// Read data file into data buffer
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Exiv2::FileIo io(data);
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if (io.open() != 0) {
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throw Exiv2::Error(Exiv2::ErrorCode::kerDataSourceOpenFailed, io.path(), Exiv2::strError());
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}
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Exiv2::DataBuf buf(io.size());
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std::cout << "Reading " << buf.size() << " bytes from " << data << "\n";
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const size_t readBytes = io.read(buf.data(), buf.size());
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if (readBytes != buf.size() || io.error() || io.eof()) {
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throw Exiv2::Error(Exiv2::ErrorCode::kerFailedToReadImageData);
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}
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// Read metadata from file
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auto image = Exiv2::ImageFactory::open(file);
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image->readMetadata();
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// Set Preview field to the content of the data file
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Exiv2::DataValue value;
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value.read(buf.data(), buf.size());
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Exiv2::IptcData& iptcData = image->iptcData();
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std::cout << "IPTC fields: " << iptcData.size() << "\n";
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iptcData["Iptc.Application2.Preview"] = value;
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std::cout << "IPTC fields: " << iptcData.size() << "\n";
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// Set IRB, compare with IPTC raw data
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Exiv2::DataBuf irb = Exiv2::Photoshop::setIptcIrb(nullptr, 0, iptcData);
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std::cout << "IRB buffer : " << irb.size() << "\n";
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const Exiv2::byte* record;
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uint32_t sizeHdr = 0;
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uint32_t sizeData = 0;
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Exiv2::Photoshop::locateIptcIrb(irb.data(), irb.size(), &record, sizeHdr, sizeData);
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Exiv2::DataBuf rawIptc = Exiv2::IptcParser::encode(iptcData);
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std::cout << "Comparing IPTC and IRB size... ";
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if (static_cast<uint32_t>(rawIptc.size()) != sizeData) {
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std::cout << "not ";
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}
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std::cout << "ok\n";
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std::cout << "Comparing IPTC and IRB data... ";
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if (0 != rawIptc.cmpBytes(0, record + sizeHdr, sizeData)) {
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std::cout << "not ";
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}
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std::cout << "ok\n";
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// Set Iptc data and write it to the file
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image->writeMetadata();
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return EXIT_SUCCESS;
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} catch (Exiv2::Error& e) {
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std::cout << "Caught Exiv2 exception '" << e << "'\n";
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return EXIT_FAILURE;
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}
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}
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