implement set videomode via json api (#457)

* implement set videomode via json api

* refactor grabbers:
- new base class
- move shared code to base class

* fix osx

* rework all cmakelist files with auto file collection. except leddevices (need further restructuring)

* store current video and grabbing mode

* add json stuff

* remove grabbingmode - we do not want to expose it

libsrc/hyperion/Hyperion.cpp

@@ -400,6 +400,8 @@ Hyperion::Hyperion(const QJsonObject &qjsonConfig, const QString configFile)
 	, _prevCompId(hyperion::COMP_INVALID)
 	, _bonjourBrowser(this)
 	, _bonjourResolver(this)
+	, _videoMode(VIDEO_2D)
+	, _grabbingMode(GRABBINGMODE_INVALID)
 {
 
 	if (!_raw2ledAdjustment->verifyAdjustments())
@@ -802,6 +804,19 @@ void Hyperion::setLedMappingType(int mappingType)
 	emit imageToLedsMappingChanged(mappingType);
 }
 
+void Hyperion::setVideoMode(VideoMode mode)
+{
+	_videoMode = mode;
+	emit videoMode(mode);
+}
+
+void Hyperion::setGrabbingMode(GrabbingMode mode)
+{
+	_grabbingMode = mode;
+	emit grabbingMode(mode);
+}
+
+
 void Hyperion::hyperionStateChanged()
 {
 	if(_fsi_blockTimer.isActive())