#5 SetEndStreamCallback causing repeatable python crash

[futnuh]

Hi Peter,

First off, thanks *so* much for writing pySonic and
making it available.

The problem: I am getting a repeatable crash with
pySonic when attempting stream callbacks. I originally
thought it was my usage but I've pared it back to the
simplest of examples taken from the tutorial page:
http://www.cs.unc.edu/~parente/tech/tr07.shtml

On my system (pySonic v0.8, python 2.4, FMOD 3.75,
fully patched Windows XP, dual-core P4 3GHz), the
following crashes python every time. With the
time.sleep(0.5) uncommented, crashes no longer occur
(or have become extremely infrequent). With the
time.sleep(0.005) uncommented, 75% of the time it runs,
the remaining quarter of cases crash - ocassionally
with the error shown.

While this looks like a threading problem, I am running
in a single thread. Perhaps though it is something to
do with having a dual-core cpu (though wouldn't this
bug have shown up on earlier multi-processor systems?).

Any help would be much appreciated. I am under
pressure to have this working properly by next week.

------------- test4.py ------------------
import pySonic
import time

# define a callback function
flag = False
def stream_done(source):
global flag
flag = True
print 'stream ended'

# create world and source; prepare audio
w = pySonic.World()
src = pySonic.Source()
src.Sound =
pySonic.FileStream('testsoundmanager-sample02.wav')
src.SetEndStreamCallback(stream_done)

# play until callback
src.Play()
while not flag:
pass
#time.sleep(0.005)
#time.sleep(0.5)

------------------------------------------

$ python test4.py
stream ended
Fatal Python error: This thread state must be current
when releasing

This application has requested the Runtime to terminate
it in an unusual way.
Please contact the application's support team for more
information.