[alsa-devel] How to enforce 32bit access?

Joachim Foerster mls.JOFT at gmx.de
Fri Oct 5 19:09:53 CEST 2007

Hi ALSA devs,

meanwhile I tried to put a constraint on SNDRV_PCM_HW_PARAM_FRAME_BITS
by the use of snd_pcm_hw_constraint_minmax() function with min=32 and
max=32, but still no success - the ALSA Library still makes 16bit
accesses, when playing mono (1 channel) files.

Any ideas?

On Tue, 2007-10-02 at 17:34 +0200, Joachim Foerster wrote:
> [...]
> Therefore my question is:
> In my driver for the controller, how do I tell ALSA, that it is only
> allowed to write in 32bit quantities?
> Is this possible at all?
> Or do I have to use a special .asoundrc file?


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