Speeding up USBMIDI in Lion
Speeding up USBMIDI in Lion
- Subject: Speeding up USBMIDI in Lion
- From: Anders Gärder <email@hidden>
- Date: Wed, 31 Aug 2011 20:56:09 +0200
Hello,
we build a USB to MIDI interface that ships with our drum machines that also
has the ability to increase the bitrate x10. This way we make
transfer of samples and dumping of patches more bearable to the user.
When our software get information (using MIDI) from the interface that the
speed is increased we use the function
MIDIObjectSetIntegerProperty(destination,kMIDIPropertyMaxSysExSpeed,3125*speed);
to inform OS X.
This no longer works for us in Lion. There is no speed increase sending.
So today we tried compiling our own driver modifying the example
SampleUSBMIDIDriver
and calling MIDIObjectSetIntegerProperty from there. Still no result.
Does anyone know how to do this in Lion?
best regards
Anders Gärder
Elektron Music Machines
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