Corona is an image input/output library that can read, write, and manipulate image files in just a few lines of code. It can write PNG files, and read PNG, JPEG, PCX, BMP, TGA, and GIF. Corona was designed to be easy to use, and exports a straightforward C++ API. With just a few lines of C++, you can add image loading to your application.

Corona 1.0.1 shipped in May, 2003, and added support for TGA images as well as a few more functions.

http://corona.sourceforge.net/