Re: Specifying supported hw params (channels, format, etc.) by the plug plugin in alsa config?

[Jaroslav Kysela <perex@xxxxxxxx>]

On 25. 08. 24 20:16, Pavel Hofman wrote:
> Hi,
>
> Please is it possible to restrict the hw params space for the plug
> plugin by some alsa configuration, so that it reports/accepts only a
> specific number of channels/specific sample format? I was not able to
> figure it out, I apologize if it's trivial :-)

Hi,

	here's a quick example:

===
pcm.hubcap {
  type plug
  slave {
    pcm "hw:Loopback,1,0"
    rate 48000
    format S16_LE
  }
}
===

Documentation: https://www.alsa-project.org/alsa-doc/alsa-lib/pcm_plugins.html

					Jaroslav

--
Jaroslav Kysela <perex@xxxxxxxx>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.