[alsa-devel] [PATCH - amixer] listen to D-Bus for volume-up, volume-down and mute signals.

Takashi Iwai tiwai at suse.de
Mon Aug 3 14:13:16 CEST 2009

At Mon, 03 Aug 2009 14:04:09 +0200,
Lukasz Stelmach wrote:
> Takashi Iwai pisze:
> > At Mon,  3 Aug 2009 12:43:21 +0200,
> > Łukasz Stelmach wrote:
> >>
> >> The patch introduces D-Bus support in amixer. With --dbus option given amixer
> >> works continiously (like with the --stdin) waiting for
> >> org.freedesktop.Hal.Device.Condition with the first argument "ButtonPressed"
> >> and the second being one of: "volume-up", "volume-down" and "mute". These
> >> are emmited by the HAL input helper. A single amixer process can controll
> >> one mixer item. There are options to choose a specific item to controll,
> >> an input device to listen and a single adjustment step size.
> >>
> >> Signed-off-by: Łukasz Stelmach <stlman at poczta.fm>
> > 
> > Thanks for the patch.
> > 
> > The approach is interesting, but I'm not sure whether we should put
> > all into amixer in this way since we don't want extra library
> > dependency.  (Note: amixer could be used in initrd.)
> > I think it's better to split the code and make it as an individual
> > daemon instead of additional options of amixer.
> No worries ;) there is --with(out)--dbus option for configure to
> disable all this code which is enough for initrd because most often
> (AFAIK) initrd binaries are not the same that in the live system.

Usually same binaries are used for initrd nowadays in many distros.
So, configure option doesn't help.

And, I really prefer this as a separate daemon, so it be as small as
possible.  Seeing amixer as a daemon is somewhat strange...


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