[Interest] Fix QML Camera's frame rate and change it resolution

[Suornoms Siademont]

Hi!
Can it possible to fix frame rate and change resolution of Camera? Tried to use

viewfinder.maximumFrameRate: 10
viewfinder.minimumFrameRate: 10

and

viewfinder.resolution: Qt.size(640, 480)

- no effect.

How can I access the QML Camera from Android's Java side (I mean in
QtActivity class)?
What does Qt use for creating Camera on Android devices?