[wdmaudiodev] DirectMusic and system exclusive
- From: "Evert van der Poll" <evert@xxxxxxxxxxxxxxxxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Mon, 26 Sep 2005 17:35:40 +0100
Hello all,
In the past I have posted on this mailing list about a problem I found with
the DirectMusic API. A test utility that I wrote, called MidiTest (download
for free at http://miditest.earthvegaconnection.com), indicated that any
application using the DirectMusic API to handle MIDI processing would
experience difficulties receiving MIDI messages of a certain type, called
system exclusive. The problems would show up when trying to receive system
exclusive messages larger than a few hundred bytes in size.
After I did some research in this matter I traced the problem down to the
user mode component of DirectMusic, dmusic.dll. I also found some solutions,
let's say work-arounds, that driver developers as well as application
programmers could use. I wrote a little article about it which can be read
here: http://miditest.earthvegaconnection.com/developers.html.
I hope this information will be useful to others. Also it would be nice if
the problem could be fixed of course.
Evert van der Poll
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