[alsa-devel] [RFC] virtual master control (1/3)

[Jaroslav Kysela]

On Fri, 23 Nov 2007, Takashi Iwai wrote:

> At Mon, 19 Nov 2007 12:13:28 +0100,
> I wrote:
> > 
> > > > > If not, then it is better  to remove it/remame to VolumeKnob
> > > >
> > > > Agreed.  I'd like to take a safer way if you don't insist...
> > > Great, it is probably the best to have a virtual master volume.
> > > Just one question, it will be probably enabled for devices that don't have a 
> > > master volume (or have it broken like the STAC), right?,
> > > And when you expect it to be merged?
> > 
> > Hopefully will be posted in this week after a small brush up.
> 
> OK, here is a series of the patch I promised.
> 
> The first one is the patch to add virtual master controls.
> 
> ===
> 
> [PATCH] Add virtual master control
> 
> This patch adds the routines to create virtual master controls.
> A virtual master control can have multiple slave controls that
> are supposed to be identical type.  The master volume will add the
> master attenuation and the master switch will add the master mute
> switch.
> 
> ---

I'm really not sure if I like to see such extensions in kernel. We have 
now user control elements and a small daemon written in C or python will 
do exactly same job and will be more flexible.

						Jaroslav

-----
Jaroslav Kysela <perex at perex.cz>
Linux Kernel Sound Maintainer
ALSA Project