[alsa-devel] Stream format conversion in SoC driver

[Giedrius Trainavičius]

Unfortunately the 'volumealsa' widget used by Raspbian does not support
'plug' in .asoundrc... (
https://github.com/raspberrypi/lxpanel/blob/master/plugins/volumealsa/volumealsa.c)
It hardcodes default device to type 'hw'.

I hoped I could get transcoding getting done within the kernel space, then
no changes to Raspbian's 'volumealsa' would be needed...

Is there any other way possible?

Thank you,
Giedrius.

On Tue, Dec 27, 2016 at 10:51 PM, Clemens Ladisch <clemens at ladisch.de>
wrote:

> Giedrius Trainavičius" wrote:
> >Is it possible to have ALSA do the necessary format conversions for the
> PCM
> >streams in natively unsupported formats to the closest natively supported
> >format?
>
> Yes (in userspace).
>
> >What would be required to enable it?
>
> Nothing; the "plug" plugin is automatically used by the
> default device.
>
>
> Regards,
> Clemens
>
>