On Wed, 2021-01-13 at 16:17 +0100, Takashi Iwai wrote: > On Wed, 13 Jan 2021 16:13:40 +0100, > Bastien Nocera wrote: > > > > On Wed, 2021-01-13 at 16:08 +0100, Takashi Iwai wrote: > > > <snip> > > > Nothing so far, and that's the problem. HID is managed in a > > > completely different layer, hence the integration needs to be > > > done in > > > a higher level like PA, I suppose. In theory we might be able to > > > extend UCM to handle the other external devices, though. > > > > hid-prodikeys.c seems to do some MIDI stuff... > > It creates its own sound card. But you want to use the mixer switch > for the existing audio interface, right? My idea was to create my own sound card (it's a separate USB interface after all) exporting the sidetone mixer, and figure out how to merge it with the USB audio interface at PulseAudio's level. Otherwise
