What does f-spot use to display raw files?

["Anand Joseph" <joseph anand gmail com>]

I am curious to know what f-spot uses to display raw files, more specifically Fujifilm's .raf. This is because I find the quality of the .raf files much better than what I get using the default dcraw/ufraw/Photoshop/s7raw settings. If it uses dcraw, I wonder what options it actually uses.