[alsa-devel] asihpi: Control naming

Clemens Ladisch clemens at ladisch.de
Tue Oct 5 11:47:12 CEST 2010

Eliot Blennerhassett wrote:
> On 05/10/10 20:07, Clemens Ladisch wrote:
> > Capture controls affect audio data that is recorded by the computer.
> > Playback controls affect audio data that comes out of the sound card.
> OK. I think everything fits one of these two.
> I find the asymmetry a little odd. (i.e. Capture controls defined by
> destination of PCM Capture, while Playback controls not defined by
> source of PCM Playback)

In both cases, it's the destination that determines the type.

When it comes to partitioning the controls into two groups according
to overall direction, using the destination makes the most sense in

> I.e. in reality they are "Capture" and "Output"

Yes, but this naming convention is already there for hysterical raisins.


More information about the Alsa-devel mailing list