Stream hangs unexpectedly

[cboulay]

A user from Slack reported the following:

I’m currently using audioCapture to collect microphone data with LSL for my mobile EEG experiments. However, I’ve noticed that sometimes the stream of the microphone is not recorded even though it is “linked”. This issue is particularly problematic for my mobile setup because I cannot check the viewer to ensure that the microphone signal is being captured in an LSL stream. To solve the problem, I have to unlink and link again.

I've never encountered this but I rarely use the AudioCapture app. From the Qt docs, it seems like we can at least register a slot to the stateChanged signal so we can be aware of an audio disconnect, then we can try to automatically reconnect.