Clemens Ladisch <clemens@xxxxxxxxxx> writes: > Brent Busby wrote: >> Is there a way to access individual subdevices through the OSS emulation? > > Short answer: no. > Long answer: opening a device will open the first available subdevice. > >> What is the difference between midi, dmmidi, amidi, and admmidi? > > /dev/midiX and /dev/dmmidiX are the same. > /dev/amidiX and /dev/admmidiX are the same. > > /dev/midiX is MIDI device 0 of card X. > /dev/amidiX is MIDI device 1 of card X. So by virtue of the 'a' prefix device nodes, I actually get the second subdevice after the one that's mapped (described in your amidi_map description below) for free? (Or am I interpreting that wrong?) It looks like I can control the first subdevice that gets exported as a device node with the amidi_map= option you describe below, plus I also get the subdevice after that (n+1) on the same device node with the 'a' prefix added...so I can have two. I may have that wrong. Just wondering though, what is the purpose of the 'dm' prefix nodes if they do the same thing? > You can change the OSS device numbers with the midi_map and amidi_map options > of the snd-rawmidi module, with one number per card. E.g., to let /dev/amidi4 > point to device 2, use "options snd-rawmidi amidi_map=1,1,1,1,2". That's very useful to at least be able to choose which subdevice gets the OSS exposure. -- - Brent Busby + =============================================== + "The introduction of a new kind of music must -- Studio -- + be shunned as imperiling the whole state, for -- Amadeus/ -- + styles of music are never disturbed without -- Keycorner -- + without affecting the most important political -- Recording -- + institutions." --Plato, "Republic" ----------------+ =============================================== _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx https://lists.linuxaudio.org/listinfo/linux-audio-user
