Here is a list of all typedefs with links to the files they belong to:

Genre : id3v1Types.h
ID3 : id3dev.h
Id3v1Tag : id3v1Types.h
Id3v2ContentContext : id3v2Types.h
Id3v2ContentEntry : id3v2Types.h
Id3v2ContextType : id3v2Types.h
Id3v2ExtendedTagHeader : id3v2Types.h
Id3v2Frame : id3v2Types.h
Id3v2FrameHeader : id3v2Types.h
Id3v2Tag : id3v2Types.h
Id3v2TagHeader : id3v2Types.h