#18 I have implemented the camera rotation in CV module.

[Tamas Lippenyi]

In raspicam_cv.cpp at line 200, just copy this:
case CV_CAP_PROP_ROLL:
if (value==0 || value==90 || value==180 || value==270 || value==360) {
_impl->setRotation(value);
};
break;

[Rafael Munoz-Salinas]

added in 0.1.4