[Csnd-dev] possible issue with ALSA midi?
| Date | 2024-11-11 19:48 |
| From | Dave Seidel |
| Subject | [Csnd-dev] possible issue with ALSA midi? |
I recently acquired a Pi 5, which I've equipped with a Pisound board (like my older Pis). I can build Cs7 without any issues, but I notice that when I query MIDI devices using ALSA as the interface, I get an error:
If I specify portmidi, no errors:
Same results on my Pi 4 running Cs7. I don't have a Pi running Cs6 for comparison. The Pi 4 is running bullseye; the Pi 5 is running bookworm. FWIW, I don't really care which interface I use, and I'm fine with using portmidi, but I thought this might indicate an issue. - Dave |
| Date | 2024-11-11 19:52 |
| From | vlz |
| Subject | Re: [Csnd-dev] possible issue with ALSA midi? |
| It could well be. Can you run -odac to it, does it make any sound? Prof. Victor Lazzarini Maynooth University Ireland On 11 Nov 2024, at 19:48, Dave Seidel <dave.seidel@gmail.com> wrote:
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| Date | 2024-11-11 20:04 |
| From | Dave Seidel |
| Subject | Re: [Csnd-dev] possible issue with ALSA midi? |
Yes, -odac is working fine. I went back and checked, and I've been specifying "-+rtmidi=portmidi" for several years now on my Pis, going back to Cs6. So maybe this is an old/existing issue, which might make it low priority. On Mon, Nov 11, 2024 at 2:52 PM vlz <viclazzarini@gmail.com> wrote:
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| Date | 2024-11-11 20:12 |
| From | vlz |
| Subject | Re: [Csnd-dev] possible issue with ALSA midi? |
I checked and this error message comes from the MIDI side of things in the alsa module
static int32_t listDevicesM(CSOUND *csound, CS_MIDIDEVICE *list, int32_t isOutput){
int32_t count = 0;
char *s;
s = (char*) csound->QueryGlobalVariable(csound, "_RTMIDI");
if (strncmp(s, "alsaraw", 8) == 0) { /* ALSA Raw MIDI */
count = listRawMidi(csound, list, isOutput);
} else if (strncmp(s, "alsaseq", 8) == 0) {/* ALSA Sequencer */
count = listAlsaSeq(csound, list, isOutput);
} else if (strncmp(s, "devfile", 8) == 0) {
} else {
csound->ErrorMsg(csound, Str("rtalsa: Wrong callback."));
}
return count;
}
So maybe you can try one of the options: alsaraw, alsaseq or devfile (from the code, it’s raw midi, alsa sequencer midi or
midi file). These are the three options for listing but I guess “alsaraw” should have also been the same as “alsa” but
currently is not there.
> On 11 Nov 2024, at 20:04, Dave Seidel |
| Date | 2024-11-11 20:34 |
| From | Dave Seidel |
| Subject | Re: [Csnd-dev] possible issue with ALSA midi? |
aha, interesting! Yes, that works. We should probably document this. dave@phonon:~ $ csound -+rtmidi=alsaseq --midi-devices 5 MIDI input devices 0: hw:0,0 (Timer) 1: hw:0,1 (Announce) 2: hw:14,0 (Midi Through Port-0) 3: hw:24,0 (pisound MIDI PS-28625BA) 4: hw:128,0 (pisound-ctl) 3 MIDI output devices 0: hw:14,0 (Midi Through Port-0) 1: hw:24,0 (pisound MIDI PS-28625BA) 2: hw:128,0 (pisound-ctl) overall amps: 0.0 overall samples out of range: 0 0 errors in performance Elapsed time at end of performance: real: 0.003s, CPU: 0.003s dave@phonon:~ $ csound -+rtmidi=alsaraw --midi-devices 1 MIDI input devices 0: hw:2,0 (pisound MIDI PS-28625BA) 1 MIDI output devices 0: hw:2,0 (pisound MIDI PS-28625BA) overall amps: 0.0 overall samples out of range: 0 0 errors in performance Elapsed time at end of performance: real: 0.004s, CPU: 0.004s dave@phonon:~ $ csound -+rtmidi=devfile --midi-devices 0 MIDI input devices 0 MIDI output devices overall amps: 0.0 overall samples out of range: 0 0 errors in performance Elapsed time at end of performance: real: 0.001s, CPU: 0.001s On Mon, Nov 11, 2024 at 3:12 PM vlz <viclazzarini@gmail.com> wrote: I checked and this error message comes from the MIDI side of things in the alsa module |
| Date | 2024-11-11 20:40 |
| From | vlz |
| Subject | Re: [Csnd-dev] possible issue with ALSA midi? |
I see in the code that although it seems to accept -+rtmidi=alsa to select the alsaraw midi backend, the names of the midi modules are only alsaraw, alsaseq and devfile. Not sure what the intention was but I guess "alsa" should be added too (as an alias of alsaraw). Prof. Victor Lazzarini Maynooth University Ireland On 11 Nov 2024, at 20:34, Dave Seidel <dave.seidel@gmail.com> wrote:
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