kern/113950: per-vchan mixer support

Alexander Botero-Lowry alexbl at
Fri Jun 22 16:00:12 UTC 2007

>Number:         113950
>Category:       kern
>Synopsis:       per-vchan mixer support
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Class:          change-request
>Submitter-Id:   current-users
>Arrival-Date:   Fri Jun 22 16:00:10 GMT 2007
>Originator:     Alexander Botero-Lowry
>Release:        FreeBSD 6.0-STABLE i386
System: FreeBSD 6.0-STABLE FreeBSD 6.0-STABLE #0: Sat Dec 10 03:18:20 UTC 2005 kensmith at i386

	DragonFly has support for per-vchan volume control so that you can
adjust volume on an application level. This is a feature you usually have to
install some lame sound-server to get, and it would be really cool to have it
on FreeBSD. The Dfly commit log and links to the diffs are at:

I tried to apply this myself, and while it was fairly trivial to apply against
STABLE, I wasn't able to really make sense of where stuff would go on CURRENT.
If it looks ok, and it doesn't take much shoehorning it would be really cool!	
	Try to play two songs at the same time and mute one of them.
	shoehorn the dfly patches.


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