Understanding when the virtual camera is in use and when not

[yilmazzosmann]

Hello,

Great project! Thanks a lot!
Both the scWaitForConnection and scIsConnected functions get True forever once the camera is opened or the connection is secured. Is it possible to return True let's say when the softcam virtual camera is in use, but if the user changes to another camera then return False? Not to return True forever. I want to fully know when this virtual camera is in use or not, if possible.
Thanks a lot!

[tshino]

Thank you for asking!
Your understanding of the behavior of existing functions is correct. Regarding the question, let me think.

[yilmazzosmann]

I did not fully get the working principle of how it gets to understand it is connected, that I chose that virtual camera in use, maybe in a way if that condition can be checked continuously, that can solve the issue for me

[yilmazzosmann]

Any news?

[tshino]

Sorry for my late response.

Technically that should be possible, but its implementation is not trivial and may require careful coding.

At first, I thought that reference counting of connected applications could be a solution. However, it won't work because a process easily stops without decrementing reference counts when it crashes or is killed by the system.
I think a watchdog to monitor whether the receiver application is alive or not could be a solution.

[yilmazzosmann]

Do you think it is addable to the current watchdog implementation?

[tshino]

Yes.
As you noticed, we already have Watchdog class in the library. It is used to monitor whether the sender is alive as opposed to the abovementioned case. I think applying the class in the opposite direction is also possible.