On April 18, Thomas Knoll released a DNG SDK (Software Developer's Kit). Being ignorant of the subtleties of such things, I cannot say for sure that this accomplishes what you requested, but I think it does.
http://www.adobe.com/support/downloads/dng/dng_sdk.html Shel > [Original Message] > From: Kevin Waterson > Adobe is a large commercial entity, > call me synical but these sort of dangling > carrots leave me somewhat suspicious. > If it were truely an open format, why not > open source it?
