bool MetadataThumbnail::writeThumbnail(bool isMetadataEnabled)
{
isThumbnailSavedSuccessfully = false;
#ifdef SIR_METADATA_SUPPORT
if (isMetadataEnabled) {
MetadataUtils::Metadata metadata;
if (metadata.read(imagePath, true)) {
exifStruct_ = metadata.exifStruct()->copy();
iptcStruct_ = metadata.iptcStruct()->copy();
Exiv2::Image::AutoPtr image = metadata.imageAutoPtr();
imageSize = QSize(image->pixelWidth(), image->pixelHeight());
Exiv2::PreviewManager previewManager (*image);
Exiv2::PreviewPropertiesList previewList = previewManager.
getPreviewProperties();
if (previewList.empty()) {
return isThumbnailSavedSuccessfully;
}
else { // read from metadata thumnail
Exiv2::PreviewImage preview = previewManager.getPreviewImage(
previewList[0]);
preview.writeFile(thumbPath.toStdString());
thumbPath += preview.extension().c_str();
thumbSize.setWidth(preview.width());
thumbSize.setHeight(preview.height());
}
isThumbnailSavedSuccessfully = true;
return isThumbnailSavedSuccessfully;
}
else {
return isThumbnailSavedSuccessfully;
}
}
#endif // SIR_METADATA_SUPPORT
return isThumbnailSavedSuccessfully;
}
int main(int argc, char* const argv[])
try {
if (argc != 2) {
std::cout << "Usage: " << argv[0] << " file\n";
return 1;
}
std::string filename(argv[1]);
Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(filename);
assert(image.get() != 0);
image->readMetadata();
Exiv2::PreviewManager loader(*image);
Exiv2::PreviewPropertiesList list = loader.getPreviewProperties();
for (Exiv2::PreviewPropertiesList::iterator pos = list.begin(); pos != list.end(); pos++) {
std::cout << pos->mimeType_
<< " preview, type " << pos->id_ << ", "
<< pos->size_ << " bytes, "
<< pos->width_ << 'x' << pos->height_ << " pixels"
<< "\n";
Exiv2::PreviewImage preview = loader.getPreviewImage(*pos);
preview.writeFile(filename + "_"
+ Exiv2::toString(pos->width_) + "x"
+ Exiv2::toString(pos->height_));
}
// Cleanup
Exiv2::XmpParser::terminate();
return 0;
}
catch (Exiv2::AnyError& e) {
std::cout << "Caught Exiv2 exception '" << e << "'\n";
return -1;
}