nando -- i just tried your example with 1000 events and didnt have this
problem on OS X. what is the value of *portmidi-default-outbuf-size* ?
it should be 2048. if its not then try setting it to a larger value or
\ open portmidi explicitly and pass the value to it:
(portmidi-open :outbuf-size 2048 ... )
as far as i can tell, that is the only method portmidi gives to
increase queue size. if increasing this number doesnt fix the problem i
think there must be some portmidi/linux issue on lurking.
btw it seems from your backtrace that my portmidi error reporting isnt
working.
On Jan 31, 2006, at 7:46 PM, Fernando Lopez-Lezcano wrote:
Hi all, I'm running here a CM snapshot from 2005.12.15 and I'm having
problems with portmidi. It looks like when the portmidi/alsa internal
buffer becomes full Common Music just throws an error and that's it.
For
example this plays fine (you have to open the portmidi device first):
(events (process for i from 0 below 250
output (new midi :keynum (+ 60 (mod i 40)) :time
(now))
wait 0.01)
"midi-port.pm")
add one more note (251 instead of 250):
(events (process for i from 0 below 251
output (new midi :keynum (+ 60 (mod i 40)) :time
(now))
wait 0.01)
"midi-port.pm")
and I get:
--------
bad argument to ERROR: #.(SB-SYS:INT-SAP #XB7FEBDDD)
[Condition of type SIMPLE-TYPE-ERROR]
Restarts:
0: [ABORT-REQUEST] Abort handling SLIME request.
1: [ABORT] Exit debugger, returning to top level.
Backtrace:
0: (SB-KERNEL:COERCE-TO-CONDITION #.(SB-SYS:INT-SAP #XB7FEBDDD) NIL
SIMPLE-ERROR ERROR)
1: (ERROR #.(SB-SYS:INT-SAP #XB7FEBDDD))
2: (PORTMIDI:WRITESHORT #.(SB-SYS:INT-SAP #X082809F0) 3094653
8340864)
[MUNCH]
--------
Using "(rts" instead minimizes the chance of this happening but the
error can be triggered...
What could I do about this (other than sending few notes :-)?
-- Fernando
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