Hi there,
I'm trying to use portmidi with my Novation X-Station under OS X
Leopard, and have come across a bug in the part of portmidi that
enumerates the device names on OS X. For some reason it seems as
though the X-Station doesn't name it's individual ports, only the
device, so when I try and run Pm_Initialize with the X-Station it
causes a bus error.
Looking at the traceback, it looks as if the problem is in the
EndpointName function in pmmacosxcm.c. Specifically the call to
CFStringCompareWithOptions on line 686. I suspect it doesn't like
running with an empty string or something...
This patch seems to fix the problem, though I'm not sure if there's a
better way to do it:
676c676,679
< if (str != NULL) {
---
> if (CFStringGetLength(result) == 0){
> CFRelease(result);
> return str;
> }else if (str != NULL) {
Thanks!
Rob
P.S. To whomever just applied the "Fixed bug in midi_length function
in OS X implementation." patch, thank you very much! I was just
running across that nasty problem last night when trying to use
portmidi with ableton, and it was beyond me as to how to fix it!
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