9 Jun
2003
9 Jun
'03
6:34 p.m.
Jay Vaughan <seclorum(a)mac.com> wrote:
Hi Jay,
I took a look at MidiShare, but unfortunately it wont work on NetBSD as
it depends on a kernel module. I have tried using Linux, but gave up
when I couldn't get ALSA or OSS to recognise my USB MIDI interface, (a
Yamaha UX96). Under NetBSD it's recognised as soon as I plug it in.
I did Google around expecting there to be lots of convenient MIDI
libraries, but I couldn't find any. Is ALSA that good that no one uses
anything else? It seems to be overkill for System Exclusive stuff to
use a high level library though, especially as the details differ on
virtually every MIDI device.
Chris
I'm trying to write a patch editor and
librarian for Roland's CM-32L
synth module. This was a repackaged version of the popular MT-32 with 8
part multimbral support, separate drums and a basic reverb facility. The
only controls on the front panel are a power switch and master volume
knob - everything else has to be done via MIDI.
I don't understand why you're re-inventing the wheel ... why don't
you try to write your app using one of the MIDI libs out there which
already work, such as MidiShare for example?
I can't see any obvious glaring problems with your code, but I'd
recommend you try to write your app using an already-working MIDI
library... there's just no point re-inventing a MIDI API for Linux,
the ones that are there already work perfectly well.
9 Jun
9 Jun
7:34 p.m.
New subject: [linux-audio-dev] System Exclusive question
I took a look at MidiShare, but unfortunately it wont
work on NetBSD as
it depends on a kernel module. I have tried using Linux, but gave up
when I couldn't get ALSA or OSS to recognise my USB MIDI interface, (a
Yamaha UX96). Under NetBSD it's recognised as soon as I plug it in.
Ah, good point, I missed that detail about NetBSD, sorry about that.
I did Google around expecting there to be lots of
convenient MIDI
libraries, but I couldn't find any. Is ALSA that good that no one uses
anything else? It seems to be overkill for System Exclusive stuff to
use a high level library though, especially as the details differ on
virtually every MIDI device.
In most 'high level' MIDI API's you can just write your own callback
handler and tell the API to send you completely parsed SYSEX blocks
... there's no need to deal with the MIDI system at all. This seems
pretty easy to me, or at least it did until I understood your NetBSD
issue.
You might find Will Weston's VSEX (Virus Sysex Library for Linux)
tool to be inspirational - it does what you want to do for the
Roland, albeit for our Virus synths: http://www.aarg.net/~weston/vsex.html
Let's hear how things go ... maybe its just something simple ...
--
;
Jay Vaughan
r&d>>music:technology:synthesizers - www.access-music.de/
10 Jun
10 Jun
8:53 a.m.
New subject: [linux-audio-dev] System Exclusive question
chris.wareham(a)btopenworld.com wrote:
Jay Vaughan <seclorum(a)mac.com> wrote:
> >Has anyone had succes in getting SysEx data flowing back and forth
> >between Roland sound modules and their computer?
Yes, SC-8820, over USB.
> >I have attached my
> >simple test program in case I'm doing something obviously wrong.
I see nothing obviously wrong.
It might be time-saving to try the low-tech approach first:
do a "cat /dev/midi42 > somefile", then, on another console, run:
echo -ne '\xf0\x41\x10\x16\x11\x04\x01\x76\x00\x01\x76\x0e\xf7' > /dev/midi42
> > However, whenever I send a Request Data
> >message the unit doesn't appear to respond. It definitely receives the
> >message as the MIDI activity light comes on. But when I try to read from
> >the MIDI device file my call blocks forever.
My unit's light is active while the dump is being transmitted (several
seconds, depending on the size of the data). Are you sure your's is
sending anything?
I have tried using Linux, but gave up when I
couldn't get ALSA or
OSS to recognise my USB MIDI interface, (a Yamaha UX96). Under
NetBSD it's recognised as soon as I plug it in.
Any somewhat recent version of ALSA does support the UX96.
HTH
Clemens
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chris.warehamï¼ btopenworld.com -
Clemens Ladisch -
Jay Vaughan