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// ***************************************************************** -*- C++ -*-
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// tiff-test.cpp
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// First and very simple TIFF write test.
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#include <exiv2/exiv2.hpp>
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#include <enforce.hpp>
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#include <string>
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#include <iostream>
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#include <iomanip>
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#include <cassert>
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using namespace Exiv2;
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void print(const ExifData& exifData);
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void mini1(const char* path);
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void mini9(const char* path);
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int main(int argc, char* const argv[])
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try {
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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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const char* path = argv[1];
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mini1(path);
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mini9(path);
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return 0;
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}
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catch (const AnyError& e) {
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std::cout << e << "\n";
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}
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void mini1(const char* path)
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{
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ExifData exifData;
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Blob blob;
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WriteMethod wm;
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// Write nothing to a new structure, without a previous binary image
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wm = ExifParser::encode(blob, 0, 0, bigEndian, exifData);
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enforce(wm == wmIntrusive, Exiv2::kerErrorMessage, "encode returned an unexpected value");
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assert(blob.size() == 0);
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std::cout << "Test 1: Writing empty Exif data without original binary data: ok.\n";
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// Write nothing, this time with a previous binary image
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DataBuf buf = readFile(path);
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wm = ExifParser::encode(blob, buf.pData_, buf.size_, bigEndian, exifData);
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enforce(wm == wmIntrusive, Exiv2::kerErrorMessage, "encode returned an unexpected value");
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assert(blob.size() == 0);
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std::cout << "Test 2: Writing empty Exif data with original binary data: ok.\n";
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// Write something to a new structure, without a previous binary image
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exifData["Exif.Photo.DateTimeOriginal"] = "Yesterday at noon";
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wm = ExifParser::encode(blob, 0, 0, bigEndian, exifData);
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enforce(wm == wmIntrusive, Exiv2::kerErrorMessage, "encode returned an unexpected value");
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std::cout << "Test 3: Wrote non-empty Exif data without original binary data:\n";
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exifData.clear();
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ByteOrder bo = ExifParser::decode(exifData, &blob[0], (uint32_t) blob.size());
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enforce(bo == bigEndian, Exiv2::kerErrorMessage, "decode returned an unexpected value");
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print(exifData);
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}
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void mini9(const char* path)
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{
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TiffImage tiffImage(BasicIo::AutoPtr(new FileIo(path)), false);
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tiffImage.readMetadata();
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std::cout << "MIME type: " << tiffImage.mimeType() << "\n";
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std::cout << "Image size: " << tiffImage.pixelWidth() << " x " << tiffImage.pixelHeight() << "\n";
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ExifData& exifData = tiffImage.exifData();
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std::cout << "Before\n";
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print(exifData);
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std::cout << "======\n";
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exifData["Exif.Photo.DateTimeOriginal"] = "Yesterday at noon";
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std::cout << "After\n";
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print(exifData);
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tiffImage.writeMetadata();
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}
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void print(const ExifData& exifData)
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{
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if (exifData.empty()) {
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std::string error("No Exif data found in the file");
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throw Exiv2::Error(kerErrorMessage, error);
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}
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Exiv2::ExifData::const_iterator end = exifData.end();
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for (Exiv2::ExifData::const_iterator i = exifData.begin(); i != end; ++i) {
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std::cout << std::setw(44) << std::setfill(' ') << std::left
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<< i->key() << " "
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<< "0x" << std::setw(4) << std::setfill('0') << std::right
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<< std::hex << i->tag() << " "
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<< std::setw(9) << std::setfill(' ') << std::left
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<< i->typeName() << " "
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<< std::dec << std::setw(3)
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<< std::setfill(' ') << std::right
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<< i->count() << " "
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<< std::dec << i->value()
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<< "\n";
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}
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}
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