The Generic Image Decoder (GID) is an Ada package for decoding a broad
variety on image formats from any data stream to any kind of medium.
Examples include in-memory bitmap, a GUI object, another stream, floating
point data for scientific calculations, a browser element or a device.
Animations are also supported.  GID features:

  * Standalone; requires no other libraries or bindings
  * Completely portable - no OS, CPU, or compiler dependencies
  * Task safe
  * Endian-neutral
  * Free and open source
  * Pure Ada95 (suitable for Ada2005 and Ada2012 projects)

Currently supports BMP, GIF, JPEG, PNG and TGA formats.

WWW: http://gen-img-dec.sourceforge.net/