[alsa-devel] Query about SNDRV_PCM_FORMAT_GSM

Mark Brown broonie at opensource.wolfsonmicro.com
Wed Jun 22 13:58:33 CEST 2011

On Wed, Jun 22, 2011 at 11:54:56AM +0200, Takashi Iwai wrote:
> Patrick Lai wrote:

> > I see SNDRV_PCM_FORMAT_GSM is defined in asound.h. However, I do not
> > find any reference to this macro except pcm_misc.c. I am curious how
> > bps info(i.e 4.75 kbit/s) is passed down to the ALSA driver. Any
> > pointers?

> This is a vapor format until now, just reserved for the future
> implementation :)

It may make sense to handle this in a similar way to MP3s and so on -
the Intel guys were working on generalising the interface in their out
of tree driver to be usable for other things, though they've not posted
anything yet.

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