Exiv2
Namespace List
Here is a list of all documented namespaces with brief descriptions:
[detail level 1234]
 NExiv2Provides classes and functions to encode and decode Exif and Iptc data. The libexiv2 API consists of the objects of this namespace
 NSafeArithmetic operations with overflow checks
 NUtilContains utility classes and functions. Most of these are wrappers for common C functions that do not require pointers and memory considerations