Re: Elementary CoreMIDI problem
Re: Elementary CoreMIDI problem
- Subject: Re: Elementary CoreMIDI problem
- From: Robert Martin <email@hidden>
- Date: Wed, 30 Mar 2005 09:33:16 -0500
You might want to download and study Kurt Revis's cource code for MIDI
Monitor at: <http://www.snoize.com/MIDIMonitor/Source/>. It's pretty
feature-complete, and very well designed and documented.
Rob
On Mar 30, 2005, at 6:16 AM, David DURIEUX wrote:
Hi,
Contrary to what the rest of this email may imply, I'm not a complete
idiot, I am, however, a complete novice to both Apples and CoreMIDI.
My colleague and I are trying to start a small project but we are
stuck on some elementary problems. Previous posts direct people's
attention towards the example echo.cpp, but, this application crashes
whenever we run it on our system.
The application crashes only when a midi keyboard is connected to the
system. I know the keyboard is continually sending out null midi
messages. To me this seems as though the IAC bus is acting as a
loopback device, and copying the output back to the input again
creating a huge queue of messages which are using all the systems
resources. Does the IAC bus act as a loopback device? If not can
anyone shed some light on our problem?
Secondly, I am still very confused about how messages can be moved
from destination to source. The example only shows how to connect
several sources to an input and send the messages to a destination.
The only thing I can think of is that, because sources and
destinations are both MIDIEndpointRef's that they may be used
interchangeably, but this has not worked either.
I am sure this question has been asked before, but I would be very
grateful if someone can lend an explanation or some example code, as
documentation for CoreMIDI seems surprisingly thin.
Cheers,
D McGilvray
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