Dewarper for non 360 cameras

[MrGolden1]

Hi. I want to use your module for flat (non 360) videos to do preprocessing on my frames. The preprocessing includes rotation of frame in 45 degree (or any other degrees) and after that cropping it. So i have one input source and one output surface.
My first question:
Is it possible? which configs should i use for just rotation and crop in the [surfaceX] ?

My second question:
If the answer of first question is yes, can i have 4 input sources(non 360) from 4 cameras and have one surface for each one ? In total 4 surfaces that are rotated and cropped.
Thanks in advanced !