Re: Threading
Re: Threading
- Subject: Re: Threading
- From: Bill Stewart <email@hidden>
- Date: Wed, 6 Aug 2003 12:50:05 -0700
We had some issues with this with the way that QuickTime calls us...
(but this wouldn't affect you guys of course)
To resolve this, we added a cueing mechanism for the New Note calls and
dequeued these with each render call...
I'm not sure that we've ever explicity denied this possibility however,
so there is nothing illegal about this. The queueing that we did for
the new notes is not that onerous and we'd be happy to give out this
code to anyone who want this... It should be usable with any synth unit
with some minor changes...
Bill
On Wednesday, August 6, 2003, at 04:51 AM, Urs Heckmann wrote:
Hi Angus,
wow. That renders timestamps a joke, huh?
Any chance to get the name of such host? - I should better check if my
Music Device produces any hanging notes or even crashes due to
queueing problems before I release it...
Well, if I take Apple's documentation, Logic is the standard host to
look at. I havn't had any hanging note/crash after several minutes of
recorded and live wild-forearm-play, accompanied by chaotic start/stop
sequencer - But of course, I'd prefer to be on the safe side (and
exclude that host from my compatibility list, hehe 8-)
Thanks,
;) Urs
Am Mittwoch, 06.08.03, um 13:34 Uhr (Europe/Berlin) schrieb Angus F.
Hewlett:
I've seen hosts do this, b/c they run their MIDI I/O in a different
thread
to CoreAudio's rendering thread. Whether or not they are compliant,
that's
a different matter :-)
At 01:20 PM 8/6/2003 +0200, Urs Heckmann wrote:
Hi list,
just a quick question:
Am I right that an AU host may never ever send a Music Device any
sort
of Note/Midi/Control events (anything timestamped, to be precise)
during an ongoing Render() call or vice versa, even on multiprocessor
systems and whatever?
Thanks,
;) Urs
_______________________________________________
coreaudio-api mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/coreaudio-api
Do not post admin requests to the list. They will be ignored.
=======================================================
Angus F. Hewlett, Technical Director
FXpansion Audio UK Ltd - http://www.fxpansion.com
=======================================================
_______________________________________________
coreaudio-api mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/coreaudio-api
Do not post admin requests to the list. They will be ignored.
--
mailto:email@hidden
tel: +1 408 974 4056
________________________________________________________________________
__
"Much human ingenuity has gone into finding the ultimate Before.
The current state of knowledge can be summarized thus:
In the beginning, there was nothing, which exploded" - Terry Pratchett
________________________________________________________________________
__
_______________________________________________
coreaudio-api mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/coreaudio-api
Do not post admin requests to the list. They will be ignored.