On 5/31/19 22:05, Clemens Ladisch via Alsa-user wrote: > Stefan Sauer wrote: >> when using multi channel audio interfaces, it would be awesome to be >> able to label the ports to make it easier to select the right (pair of) >> channels in the software. > ALSA has no mechanism to associate names to multiple channels belonging to > the same PCM device. > >> Likewise for multi midi interfaces (like the classic emagic amt8). > It is possible for each port to have its own name: > > $ aplaymidi -l > Port Client name Port name > ... > 40:0 SC-8820 SC-8820 Part A > 40:1 SC-8820 SC-8820 Part B > 40:2 SC-8820 SC-8820 MIDI > > However, only the port's owner can change the name, so the USB audio > driver would have to know about it. > >> Are there any thoughts on this to support this on the Alsa level? > These labels should survive a reboot, but are not a property of the hardware, > so they must be stored somewhere else. It is not clear who should be > responsible for that. Yes of course, eg asoundrc. > And if there were a new API, most programs would not know of it. We only have a handful of pro-audio apps, sooner or later they'll use the api. I think it would be better then each app brewing their own alias config file somewhere. Stefan > > > Regards, > Clemens > > > _______________________________________________ > Alsa-user mailing list > Alsa-user@xxxxxxxxxxxxxxxxxxxxx > https://lists.sourceforge.net/lists/listinfo/alsa-user _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
