grabber api and feature unification (#462)

* move setvideomode to common place

* implement more croping and 3d support

* more api unification

* more refactoring

* osx fix

* next step

* add a mock for osx grabber. Now it is possible to test compile on none osx platforms.

* more unifications ...

* remove obsolete includes and grabbers are not dyn allocated. dispmanx needs rework an probaly not work atm

* first version of dispmanx mock. it compiles, but outputs a black image

* now dispmanx mock works!

* activate mocks in travis linux build
prepare dispmanx to rgb image out

* dispmanx now with image rgb output
fix deadlock with w/h -1 in grabber v4l
cleanups

* fix json

* fix some runtime stuff

* Update FramebufferWrapper.cpp

fix missing code

* unify grabframe

* 3d and croping for amlogic

* fix setimage not working

* make use of templates
save some codelines

* save more code lines

libsrc/grabber/v4l2/V4L2Grabber.cpp

@@ -27,8 +27,8 @@ V4L2Grabber::V4L2Grabber(const QString & device
 		, int input
 		, VideoStandard videoStandard
 		, PixelFormat pixelFormat
-		, int width
-		, int height
+		, unsigned width
+		, unsigned height
 		, int frameDecimation
 		, int horizontalPixelDecimation
 		, int verticalPixelDecimation
@@ -180,11 +180,6 @@ void V4L2Grabber::getV4Ldevices()
     }
 }
 
-void V4L2Grabber::setCropping(int cropLeft, int cropRight, int cropTop, int cropBottom)
-{
-	_imageResampler.setCropping(cropLeft, cropRight, cropTop, cropBottom);
-}
-
 void V4L2Grabber::setSignalThreshold(double redSignalThreshold, double greenSignalThreshold, double blueSignalThreshold, int noSignalCounterThreshold)
 {
 	_noSignalThresholdColor.red   = uint8_t(255*redSignalThreshold);