[Gambas-user] Not a Gambas, but a C++ question: GTKMM, Video and... Threads!

[First Last]

I want to apologize because this is for a C++ project, not a Gambas one.
I'm really clueless at the moment, and I know there are people in this list
that knows an awful lot, so I'm trying to pick someone's brains.

Once upon a time, I got myself a coupla pan-tilt IPCameras. Nothing fancy
really.
Zero Linux support, they offer Mac and Win drivers, apps, and maybe even
chocolate. But not for Linux.

Contacted the manufacturer, they sent me a nice NDA -which I signed- and
afterwards an SDK with Linux, Mac and Win dev libs, but just Mac and Win
examples.
The SDK has an absolute lack of Linux examples, as expected. Also, as I am
a mere mortal and not a multibillion corporation, the maker will give me
exactly zero support.

Because of the NDA I cannot go to details, but let's say I successfully
connected to one of the cams (the other, an older model, makes the SDK
segfault).
I can connect and authenticate to the cam, and I can spawn a video
retrieval thread from the main app, which seems to work. All of this,
again, in C++ and GTKMM.
The worker thread retrieves video frame by frame in a buffer, along with
camera events. So far so good, it works.

Problem 1: Cannot figure how to dump these frames to a GTKMM window,
control, or surface (the Win example uses Direct3D, not applicable here).
Can anyone point me in the right direction?
Problem 2: I will have to cross the thread boundary to do this. Again, not
a clue. Help?

The SDK is 32bit only. My main machine is 64bit. I am using VSCode in a
32bit VM to develop, but I would really like to have a Gambas version
eventually, like in a lib so anyone else can use it. Also, the Win example
in a 32bit Win VM does not show video, but it does work in the real
hardware. So, I want to make sure that when I don't see anything is not
because of the VM, but because something went wrong.

Problem 3: Is there any way to make Gambas work as a 32bit, both in the IDE
and the interpreter, in a 64bit machine?
Problem 4: If it is at all possible to have a solution for Problem 3 above:
How do I solve the threading issue in Gambas?

Thanks, you may now continue talking BASIC.
zxMarce.
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