Lytro… the company that made light field photography available at a reasonable price to consumers has released an API of tools for their Lytro illum camera software, and desktop tools software: https://www.lytro.com/platform/power-tools/
(side note: older company working with light field optics: (i.e. http://www.raytrix.de/) )
The API is a set of Python tools. I am respecting their NDA by not posting work or documentation since its Alpha ATM.
I personally own a Lytro Illum camera and am really excited about this attempt to computationally work with photography (and questioning what a digital photo can be). my gallery if curious: https://pictures.lytro.com/danbertner/
side note: The numbers havent lied in the lack of enthusiasm for light field tech for the average consumer. The company has shifted quite a bit of their efforts else where such as VR, video which will be exciting to see in the future.