Hi @mjun, I understand your opinion and partially share some of the frustration.
For this subject alone, the header linked in this post is from a piece of software called droidmedia.
My understanding from the steps to build a hardware adaptation is that droidmedia is actually an Android package with hybris interface.
There are at least two clients for it that I know of: gstreamer1.0-droid plugin (which makes the droid part available for gstreamer clients) and gecko-camera (before: gmp-droid) which makes droid parts available for the gecko browser.
So basically it’s a C interface to Android software, and you partly need to be an Android C++ developer to understand how to refactor it (but who is an Android developer and uses Sailfish…? yup you guessed it.)
So basically jolla camera needs to use droidmedia one way or another to work across devices with different android bases.
My frustration comes more in line with what I once heard rinigus saying: we can’t help with Camera2 api since we’re too busy with the proprietary VoLTE “solution” (sorry, I can’t find the exact place of the quote and I might remember it incorrectly)
(And sorry to be writing so late in this thread - I’ve postponed looking into this for some time. Only now I got to the point of my zenfone port needing Camera2 API too;)