5 Nov
2020
5 Nov
'20
1:52 a.m.
On Tue, 3 Nov 2020 23:45:24 +0100
Alexandre DENIS <contact(a)alexandredenis.net> wrote:
On Tue, 3 Nov 2020 09:56:36 -0800 (PST)
Len Ovens <len(a)ovenwerks.net> wrote:
Somme follow-up.
I upgraded jackd from 1.9.12 to 1.9.16. It didn't change the result.
Then I tried to use the MIDI subsystem of the ALSA backend, instead of
a2jmidid. It works correctly. So the bug is actually in a2jmidid.
I had the habit to use a2jmidid, because I had previously a soundcard
supported only by FFADO, but now that my main soundcard is supported by
ALSA, I can switch.
However, what is annoying with MIDI through the ALSA backend is port
naming scheme. It doesn't follow ALSA naming scheme, so port grouping
is broken in Catia. It replaces spaces in names with dashes. And funny
thing, 'capture' and 'playback' are reversed in the aliases! Example,
from jack_lsp -A:
system:midi_playback_21
alsa_pcm:Prophet-12-Keyboard/midi_capture_1
Prophet-12-Keyboard:midi/capture_1
The main name here is *playback*, aliases are *capture*. WTF?
-a.
The one question I do have is the buffer size
(128/2 ?) and if you
tested at more than one buffer size. I would expect that the two
would be tied together.
Even with a buffer size of 2048, a sysex message of 139 bytes cannot
be sent (but can be received).
-a.