[alsa-devel] [Vorbis-dev] libao problem (Re: No dmix/dsnoop on Intel ICH4/5 by default?)

Alan Horstmann gineera at aspect135.co.uk
Sun Mar 24 22:28:36 CET 2013

On Sunday 24 March 2013 18:50, Clemens Ladisch wrote:
> xiphmont at xiph.org wrote:
> >> The only thing I personally had an actual issue with is using "front"
> >> for stereo rather than "default". I don't seem able to come up with a
> >> compelling reason why it should be "front" myself, so one tweak could
> >> perhaps be to only change the stereo device back to "default"?
> >
> > Because then you can't guarantee or even discover what the playback
> > rate and bitdepth are. There's no way to ensure bit-exact playback in
> > a plug device, where 'front' is usually a non-plug alias.
> The SND_PCM_NO_AUTO_* flags are there for exactly this reason:
> http://www.alsa-project.org/alsa-doc/alsa-lib/group___p_c_m.html#ga64fa40b5

Where would those flags be used, and how is that different from calling


(with '0' to disable) on the pcm/configuration space?



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