Re: quick CoreMIDI question ...
Re: quick CoreMIDI question ...
- Subject: Re: quick CoreMIDI question ...
- From: Luke Bellandi <email@hidden>
- Date: Thu, 13 Nov 2003 16:23:08 -0800
CoreMIDI won't filter out Active Sensing just as a matter of course.
Your driver may be doing that.
In developing the Test Studio feature for AudioMIDISetup in Panther, we
were getting Active Sensing messages in our MIDI Input callbacks (from
devices with that support) and had to filter them out in the
application (since they obscured the more interesting MIDI-In
messages.)
Try checking with your driver manufacturer.
Luke
On Nov 13, 2003, at 11:41 AM, John Lazzaro wrote:
Hi everyone,
Quick CoreMIDI question, running 10.3.1, using an
Edirol UM-1S USB/MIDI interface with the latest Panther
drivers from edirol.com, with a loopback cable from MIDI
out back to MIDI In.
A simple test program sends the 8 MIDI System
Real-time commands (0xF8 ... 0xFF), each separated by
a 1-second delay. Looking at the stream using both
MIDI Monitor and my own software seems to indicate
that the Active Sense (0xFE) command is never received.
Is this the "correct" or "default" CoreMIDI
behavior, or does it point to a driver and/or CoreMIDI
bug?
My requirement for seeing Active Sense is that
I'm writing pseudo-wire emulation code for sending MIDI
on an RTP stream, implementing:
http://www.mail-archive.com/email@hidden/msg00059.html
and ideally I'd like to send every octet across
the net. Thanks in advance,
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--
John Lazzaro -- Research Specialist -- CS Division -- EECS -- UC
Berkeley
lazzaro [at] cs [dot] berkeley [dot] edu
www.cs.berkeley.edu/~lazzaro
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