[camerabin2] Provide a video orientation
Submitted by Sjoerd Simons
It would be very useful to set the video orientation of the captured video, both for cameras and IM application (make the orientation depend on device orientation)
It would be nice to have a GstVideoOrientation interface on all CameraSrc implementations. It's relatively easy for a user to fake, but having two code-patch in a CameraSrc using apps for (for when the src provides video-orientation and for when not).
I'm not very familiar with the design of GstBaseCameraSrc, but a potentialy suggested way would be to have GstBaseCameraSrc automatically put in a videoflip unless the implementation indicates it can do this in hardware.