On Wed, Dec 23, 2009 at 10:14 PM, Brent Busby <brent@xxxxxxxxxxxxx> wrote: > From what I've gathered online, I think what I need may be a .asoundrc > file. Then again, maybe not: The asoundrc documentation says that what > it's doing is basically mapping device/channel names found in > /proc/asound/devices (sort of the same info you get from 'aplay -L') to > custom names and routings. Problem is, the 18 channels of the Multiface > all show up as *one* PCM device here! Where are all my subdevices? For > that matter, if I did even try to use that one PCM, which channel would > it come out of? (Haven't tried it...not really that curious.) the RME hammerfall/hdsp and related devices have a single PCM subdevice. you cannot access specific channels of that subdevice via a device name unless you set up a "route" ALSA plugin pseudo-device (google will reveal more). Even when you do, using that device will "own" the entire PCM device - you can't have app A on channels 1 and 2 and app B on channels 3 and 4. My recollection is that if you use plughw:N to access the device, and just send it 2 channels, they will be replicated across all channels. > Other people have asked this before, but most such threads seem to > always come to "just use Jack." Is it impossible to directly access > these devices from Alsa? I'm not wanting anything fancy here. Actually, you might want something fancy. It sounds if you want per-app access to specific channels. ALSA doesn't do that by itself. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
