On Fri, Jul 15, 2022 at 02:28:37PM +0200, Brian Durant wrote:
> On 7/15/22 12:54 PM, Alexandre Ratchov wrote:
>
> > On Thu, Jul 14, 2022 at 10:05:43AM +0200, Brian Durant wrote:
> > > On a possibly related issue to my browser access to file system problem,
> > > has
> > > anyone been able to get Web MIDI working with Firefox on OpenBSD 7.1?
> > > Here I
> > > am referring to bandcamp.com and flowkey.com in particular. Neither site
> > > appears to be receiving any MIDI signal despite an Akai LPK25 (for
> > > testing)
> > > being registered by the system at umidi0. Flowkey requires ffmpeg to be
> > > installed, as well as prompting for the Jazz MIDI extension to be
> > > installed.
> > > Flowkey tabs crash and never make a MIDI connection. This has never
> > > happened
> > > to me with Win 11, Linux, of FreeBSD. The Bandcamp site simply doesn't
> > > register a MIDI device connected to the system, but doesn't crash the tab.
> > > Again, any constructive advice is welcomed.
> > >
> > >
> > OpenBSD ports has no MIDI support. A quick look at firefox sources
> > suggest it's using is library:
> >
> > https://github.com/boddlnagg/midir
> >
> > which doesn't have sndio backend.
>
> Many thanks about the information regarding Web MIDI, Firefox and midir. No
> wonder this has been driving me mad. I had yet to look systematically at
> ports to see what programs using MIDI were available, as I have been so busy
> with the browser issues, so it is interesting that you state that MIDI
> programs are lacking in ports. What do other users do? To my mind, OpenBSD
> has excellent support for recognizing MIDI devices, and excellent audio
> support (sndio) as well, which would make it an excellent OS for music
> production... At the very least, it should be feasible to get a USB MIDI
> keyboard working with fluidsynth (Qsynth) according to the OpenBSD FAQ
> (Multimedia), but I admittedly have yet to be successful at getting that
> working either...
>
To make fluidsynth work (applies to any real-time softsynth), first
lower sndio latency, example:
doas rcctl set sndiod flags "-z 128"
doas rcctl restart sndiod
Install fluidsynth and generaluser-gs-soundfont pacakges. In one
terminal start fluidsynth:
fluidsynth /usr/local/share/generaluser-gs/GeneralUser_GS.sf2
At this point, fluidsynth listens for incoming MIDI messages on the
default "midithru/0" port. To send MIDI messages from your keyboard
(probably "midi/0") to it, try:
midicat -d -q midi/0 -q midithru/0
