On Wed, Aug 02, 2023 at 10:41:43PM +0800, Shengjiu Wang wrote:

Currently the ASRC in ALSA is to connect to another I2S device as
a sound card.  But we'd like to the ASRC can be used by user space directly
that user space application can get the output after conversion from ASRC.

That sort of use case would be handled via DPCM at the minute, though
persuading it to connect two front ends together might be fun (which is
the sort of reason why we want to push digital information down into
DAPM and make everything a component).