IOhannes m zmoelnig wrote:

yesterday i ran into the very same problem (that connecting 4 MIDI devices will give me 64 midi-IN channels but only 16 midi-OUT channels) a quick look at the code revealed, that somebody is doing channel &= 0xF; which explains a lot.

actually it explains nothing; it was just a misunderstanding of the code on my side.

before i try to start fixing this code, i wanted to ask whether you have already done so and what the current status of this is.

i am using pd-0.38-4 with the alsamidi-patches, but the problem should be the very same with any MIDI-OUT.

to get multiple midi-outputs work with ALSA, you have to change one line in s_midi_alsa.c in the sys_putmidimess() function: change snd_seq_ev_set_source(&ev,alsa_midioutfd[0]); to snd_seq_ev_set_source(&ev,alsa_midioutfd[portno]);

OR apply the attached patch.

note: of course this only applies if you have alsa-midi enabled (as can be done with the patches at sf.net/projects/pure-data)

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