Neo1973 WM8753/Alsa Configuration

[Kyle Bassett]

I haven't thought of that one...but in theory that should work just as
well.  I'll give it a try tonight.

On Wed, Oct 1, 2008 at 4:48 AM, Alastair Johnson <alastair at truebox.co.uk>wrote:

> Kyle Bassett wrote:
> > Hey guys,
> >
> > I am attempting to utilize the Neo as a mobile filtering system for a
> > project, using alsa and dmix's features for the audio modification.  I
> > am able to get the Neo to record and playback, but not simultaneously.
> > I have been attempting to merge the two .state files to allow
> > simultaneous rec/playback, but haven't been successful.
> >
> > Playback only:
> > #alsactl -f /usr/share/openmoko/scenarios/stereoout.state restore
> > #aplay --device neo1973 -f cd /media/card/song.wav
> >
> > Recording only:
> > #alsactl -f /usr/share/openmoko/scenarios/capturehandset.state restore
> > #arecord --device neo1973 -f cd /media/card/mic_audio.wav
> >
> > ...and when I try to perform something like:
> > #arecord -D neo1973 -f cd | aplay -D neo1973 -f cd
> >
> > it execs successfully but I don't end up hearing any audio output.  I
> > have also tried changing the DAI Mode to 2 with no luck.  I was not able
> > to find a wiki page describing the the controls in the alsa mixer/.state
> > files...and how those controls are routed to the hardware.  I've been
> > trying to parse the Neo1973 Audio Subsystem page with no luck.
> >
> > Any ideas are much appreciated!  (I will update the wiki with any
> > breakthroughs)
>
> I know there are some differences between the Freerunner and the 1973,
> but it is probably worth looking at
> http://www.koolu.org/voip-handset.state since voip apps route the
> handset mic and earpiece to the PCM interface.
>
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