[alsa-devel] How to redefine "default" to be equivalent to "sysdefault"?

[Takashi Iwai]

At Mon, 18 Jun 2012 17:17:34 +0300,
Tanu Kaskinen wrote:
> 
> On Mon, 2012-06-18 at 15:45 +0200, Takashi Iwai wrote:
> > At Wed, 13 Jun 2012 10:57:34 +0300,
> > Tanu Kaskinen wrote:
> > > 
> > > Hi,
> > > 
> > > I have a file with the following contents:
> > > 
> > > 
> > > 
> > > # This file an alsa configuration file, used by pasuspender to make the
> > > # "default" Alsa device work while PulseAudio is in suspended state.
> > > 
> > > # Include the system configuration first. Is there any easier way to do this?
> > > # 14 lines for including one file is a bit much...
> > > @hooks [
> > >         {
> > >                 func load
> > >                 files [
> > >                         {
> > >                                 @func concat
> > >                                 strings [
> > >                                         { @func datadir }
> > >                                         "/alsa.conf"
> > >                                 ]
> > >                         }
> > >                 ]
> > >         }
> > > ]
> > > 
> > > # Redefine "default" to be the same as "sysdefault". On most systems
> > > # "sysdefault" is configured to use dmix.
> > > pcm.!default sysdefault
> > > 
> > > 
> > > 
> > > That doesn't do what I want it to do. When I run
> > > 
> > >     ALSA_CONFIG_PATH=/path/to/file.conf aplay -Ddefault ~/test.wav
> > 
> > Doesn't ALSA_CONFIG_PATH=/path/to/file.conf:/usr/share/alsa/alsa.conf
> > work?
> 
> I didn't know that I can give multiple files, so I haven't tried. One
> minor problem with this approach is that the alsa.conf path would be
> hardcoded, instead of using $(datadir)/alsa.conf.
> 
> >   $ALSA_CONFIG_PATH overrides the whole default paths, so it
> > doesn't include even sysdefault definition unless you specify multiple
> > paths.
> 
> Yes, but did you miss the part entirely where I load alsa.conf in the
> beginning of the custom configuration file? That should work too, right?

Ah, OK, I somehow didn't think of that part.
Essentially, the oneliner below replaces the 14 lines :)

<confdir:alsa.conf>
pcm.!default sysdefault


Takashi