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/hyperion/Hyperion.cpp

@@ -487,14 +487,15 @@ unsigned Hyperion::addSmoothingConfig(int settlingTime_ms, double ledUpdateFrequ
 
 void Hyperion::freeObjects(bool emitCloseSignal)
 {
+	// switch off all leds
+	clearall(true);
+	_device->switchOff();
+
 	if (emitCloseSignal)
 	{
 		emit closing();
 	}
 
-	// switch off all leds
-	clearall();
-	_device->switchOff();
 
 	// delete components on exit of hyperion core
 	delete _effectEngine;
@@ -740,9 +741,9 @@ void Hyperion::clear(int priority)
 	_effectEngine->channelCleared(priority);
 }
 
-void Hyperion::clearall()
+void Hyperion::clearall(bool forceClearAll)
 {
-	_muxer.clearAll();
+	_muxer.clearAll(forceClearAll);
 	setSourceAutoSelectEnabled(true);
 
 	// update leds