Uca camera state read from camera

[MarcusZuber]

This reads the state of the camera from the uca device instead storing it in the local concert session.
This helps when using uca-net devices where the state can be out of sync to the state concert assumes.

[MarcusZuber]

Together with ufo-kit/uca-net@fe803be it should work

[MarcusZuber]

@tfarago On my pc at home it works. We should test this soon with real cameras.
This will save me so many phone calls...

[tfarago]

Why is the interface different in the first place? If that cannot be changed then we can proceed with this...

[MarcusZuber]

The different interface has something to do where the command is executed (in the local net-plugin or in the remote plugin). The state is handled in the parent class of the net-plugin, which does not synchronize with the parent class of the server-side-plugin. This do_ function explicitly call the function of the server-side and uses the state on the server.
I'm currently not deep enough in the uca and glib stuff to make this more elegant in uca-net.
If you don't want to change the uca-net code further I would proceed with this implemention.

[tfarago]

alright 👍

[tfarago]

@MarcusZuber does this still work? Can I merge?

[MarcusZuber]

I would like to do further tests with different hardware.
I would propose to postpone this after the python3 conversion.

[tfarago]

Alright

[tfarago]

This needs libuca#44 because right now even uca.is_recording is not synced with the real remote camera.

[MarcusZuber]

This looks so clean. Are you sure it works? 😉

[tfarago]

Now it should work.

[tfarago]

And it also needs this