amlogic refactoring (#464)

* - grabber auto off when not set as active prio
- join aml and fb - on aml platform both grabbers are needed, so they joind in one module and share one prio. user don't the the nasty magic behind
- aml: preparation for direct ge2d access

* just save it, in the middle of ge2d impl

* fix compile issues

* now grabbing works basicly

* add 3d support for ge2d

* next step, we got some video from aml

* switch back to rgba

* remove unfinished ge2d stuff

* commit missing changes

* some urgent fixes, needs some beautifying, but it works now

* fixes and refctoring

libsrc/grabber/v4l2/V4L2Wrapper.cpp

@@ -86,20 +86,14 @@ void V4L2Wrapper::readError(const char* err)
 	
 void V4L2Wrapper::checkSources()
 {
-	QList<int> activePriorities = _hyperion->getActivePriorities();
-
-	for (int x : activePriorities)
+	if ( _hyperion->isCurrentPriority(_priority))
 	{
-		if (x < _priority)
-		{
-			// found a higher priority source: grabber should be disabled
-			_grabber.stop();
-			return;
-		}
+		_grabber.start();
+	}
+	else
+	{
+		_grabber.stop();
 	}
-
-	// no higher priority source was found: grabber should be enabled
-	_grabber.start();
 }
 
 void V4L2Wrapper::action()