[alsa-devel] Constraining the number of frames per period

Jaroslav Kysela perex at perex.cz
Thu Oct 21 16:50:56 CEST 2010

On Thu, 21 Oct 2010, Adam Rosenberg wrote:

> I would like to make sure that all programs that use the sound driver
> I wrote are required to use 512 frames per period.  Is there a
> snd_pcm_hw_constraint function that will allow me to do this?

Just use periods_min and period_max = 512 in the hw structure. But why 
this constraint? It's better to use different ways in the driver 
(timers, etc) to leave reasonable range of the configuration space.


Jaroslav Kysela <perex at perex.cz>
Linux Kernel Sound Maintainer
ALSA Project, Red Hat, Inc.

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