[alsa-devel] Decibel range / value from snd_hctl_elem_t

Clemens Ladisch clemens at ladisch.de
Fri Apr 29 08:15:49 CEST 2011

Sebastian H. wrote:
> I'm stuck with the hctl interface.
> What is the best way to get
> 1. the decibel range from a snd_hctl_elem_t
> 2. the decibel value from a snd_hctl_elem_t

The hctl stuff is just a thin wrapper over the ctl stuff, so call
snd_hctl_ctl and snd_hctl_elem_get_id, then snd_ctl_*dB*.

> Possibly related: What does TLV stand for?
> http://de.wikipedia.org/wiki/Type-Length-Value ?

Yes; but you should let alsa-lib parse it.


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