The file Metadata manipulation Qt wrapper:
- containers : all metadata classes to group information by categories. - engine : the low level metadata extraction class based on Exiv2 API and managing : * C++ exception from this library. * All API call protected by a common mutex to fix non re-entrancy from Exiv2. * All Exiv2 API are only used in this area to not expose all digiKam core classes of API changes. - dmetadata : the high level metadata class, based on metadata engine, but not based on Exiv2 API. This class must be used everywhere in digiKam. - exiftool : class to wrap exiftool command line tool.