Re: Purpose of ports that represent multiple UCM devices?

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On Wed, 10 Jun 2020, at 5:15 AM, Tanu Kaskinen wrote:
> Hi,
> I did some work in PulseAudio's UCM code, and I got frustrated by the
> "combined port" concept. We spend a lot of effort supporting the case
> where one port represents multiple UCM devices, but I don't understand
> why we do that. Do you know some use case for that? I would like to
> drop the feature altogether.

UCM has the notion of being able to have multiple concurrently active devices in a verb. For example, for a phone with headphones plugged in, when a ringtone/alarm needs to be played, you might want to enable the handset and headphone device.

This is done with the SupportedDevices/ConflictDevices options in UCM.

While the use case is still relevant, I'm not sure if there are better ways to do this. I'll let Jaroslav chime in on that.

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