create external framebuffer grabber

cleanup some cmakelist files
fix qt5 build


Former-commit-id: 024b5b6dc5dc96fcb16f6e8958ad3684a6728504

src/hyperion-framebuffer/FramebufferWrapper.cpp

@@ -0,0 +1,37 @@
+
+// Hyperion-AmLogic includes
+#include "FramebufferWrapper.h"
+
+FramebufferWrapper::FramebufferWrapper(const std::string & device, const unsigned grabWidth, const unsigned grabHeight, const unsigned updateRate_Hz) :
+    _timer(this),
+    _grabber(device,grabWidth, grabHeight)
+{
+    _timer.setSingleShot(false);
+    _timer.setInterval(updateRate_Hz);
+
+    // Connect capturing to the timeout signal of the timer
+    connect(&_timer, SIGNAL(timeout()), this, SLOT(capture()));
+}
+
+const Image<ColorRgb> & FramebufferWrapper::getScreenshot()
+{
+	capture();
+	return _screenshot;
+}
+
+void FramebufferWrapper::start()
+{
+    _timer.start();
+}
+
+void FramebufferWrapper::stop()
+{
+    _timer.stop();
+}
+
+void FramebufferWrapper::capture()
+{
+	_grabber.grabFrame(_screenshot);
+
+	emit sig_screenshot(_screenshot);
+}