[alsa-devel] logging stream creation

[Nick Thompson]

Hello,

I've just started looking at ALSA, and I have a couple questions that  
I hope will be pretty easy to answer.

I'd like to log stream creation as streams are brought up and shut  
down.  Should I use an I/O plugin for this?  Is there code I should  
start to look at for doing this.  Ideally I'd like to get a  
notification once streaming starts on a PCM and when it stops.

If I wanted to manipulate DMIX settings in response to streams being  
started and stopped, is it best to do this via a plugin (possibly the  
same one that I'd write for the stream monitoring, or from an external  
app that has a connection to the monitoring plug).

Finally is it possible to change the physical ALSA sink for a running  
PCM (for example if I have two devices, I start streaming on the first  
and decide in response to a user even that I need to stream to another  
sink).

Thank you!!

Nick