[alsa-devel] Question about sound channel
kuninori.morimoto.gx at renesas.com
Wed Mar 21 08:44:49 CET 2012
Thank you for your advice
> > I have question about sound channel.
> > If input sound was MONO (= 1ch), but codec supports I2S (= 2ch) only,
> > How to output sound ?
> > What should the driver do in this case ?
> The driver should expose its capability just as is, i.e. in your case,
> support only two channels. Then alsa-lib plugin will do the necessary
> thing in user-space, such as channel expansions, format conversions,
> rate conversions, etc.
Wow, I didn't know that.
Thank you, I understand.
More information about the Alsa-devel