Le sam. 25 avr. 2020 12 h 00, Ilya Aleshkov <
[hidden email]> a écrit :
Hi,
I'm investigating device monitor events for Audio/Source devices.
I'd like to receive appropriate events for built-in webcams microphones (and for external microphones as well).
Please take a look at the "gst-device-monitor-1.0 -f" output. Every time I used the same scenario - I removed and then added the same camera (Microsoft LifeCam HD-3000) while another camera (Logitech C922 Pro Stream) was plugged in.
Ubuntu 18.04 (GStreamer 1.14.5): - That's how it should work
Device removed:
name : Microsoft® LifeCam HD-3000: Mi
Device removed:
name : LifeCam HD-3000 Analog Mono
Device found:
name : Microsoft® LifeCam HD-3000: Mi
Device found:
name : LifeCam HD-3000 Analog Mono
Ubuntu 19.10 (Gstreamer 1.16.1): - It's not an ideal case but is still usable
Device removed:
name : Microsoft® LifeCam HD-3000: Mi
Device modified:
name : C922 Pro Stream Webcam Analog Stereo
Device modified:
name : LifeCam HD-3000 Mono
That seems like a regression, as it's not backward compatible. Are you sure the removed event are no more ? Modified event applies to when you choose pulse audio default, as you can change it dynamically through the system configuration. I think this is a nice addition so you can keep the UI up-to-date.
Device found:
name : Microsoft® LifeCam HD-3000: Mi
Device modified:
name : C922 Pro Stream Webcam Analog Stereo
Device modified:
name : LifeCam HD-3000 Mono
Windows 10 (GStreamer 1.14.4/1.16.1/1.16.2): - Nothing about Audio/Source devices at all. I still can workaround it but not for an external mic. Unfortunately, I don't have one to test with it.
Device removed:
name : Microsoft LifeCam HD-3000
Device found:
name : Microsoft LifeCam HD-3000
Is it a known issue? How to deal with this situation?
I don't know when it was introduced, but wasapi plugin should have a device provider. Maybe it's non-monitoring ? The story around non-monitoring provider is very bad, I would need to check, Nirbheek ?
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