AM335x linux framebuffer user space library ( /dev/fb0 )

Hi

Is there a linux framebuffer library that allow user space application creation?

I am developing a video grabber cape board to BeagleBone Black and need to debug the video hardware and want to display the images directly to /dev/fb0 using a user space application.

I think openCV is a huge and heavy solution and I am looking for a more light alternative.

Thanks

Sergio