Read/Write IPTC information on iPhone

Question

I'm developing an application on the iPhone and i want to know how to read/write IPTC informations in pictures through the iPhone, there is a library or code example to do it?

Answer 1

ExifTool by Phil Harvey handles IPTC metadata. http://www.sno.phy.queensu.ca/~phil/exiftool/

Also CoreGraphics supports IPTC metadata.

http://developer.apple.com/library/mac/#documentation/GraphicsImaging/Reference/CGImageProperties_Reference/Reference/reference.html#//apple_ref/doc/uid/TP40005103