• Open Menu Close Menu
  • Apple
  • Shopping Bag
  • Apple
  • Mac
  • iPad
  • iPhone
  • Watch
  • TV
  • Music
  • Support
  • Search apple.com
  • Shopping Bag

Lists

Open Menu Close Menu
  • Terms and Conditions
  • Lists hosted on this site
  • Email the Postmaster
  • Tips for posting to public mailing lists
Garageband 3/audio units odd behaviour
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Garageband 3/audio units odd behaviour


  • Subject: Garageband 3/audio units odd behaviour
  • From: "Muon Software Ltd - Dave" <email@hidden>
  • Date: Tue, 6 Feb 2007 14:40:47 -0000
  • Importance: Normal

Dear list,

I'm testing a PPC audio unit we're developing for a client in as many hosts
as possible and have come across something odd specifically in Garageband 3.

The AU in question is built from the same code as the VST and Standalone
versions of our product and assumes that there is a separate audio and GUI
thread in all hosts. Because of this assumption, in some cases when the user
alters certain settings in the GUI we simply make a note of that request and
leave it down to the next render cycle when it would be thread-safe to act
upon that request.

What seems to be happening in GB3 (but not in any other AU host tested) is
that the audio rendering thread doesn't seem to start when the application
is first loaded, which seems to break our plugin in some new and interesting
ways.

So far the only work arounds that I've found to get the the audio thread to
start running are:-

1. run the transport or...
2. open the musical typing keyboard or piano keyboard window and play a note
or...
3. Show editor and click in the vertical piano keyboard on the left side

Is this normal behaviour? Any suggestions?

Regards
Dave Waugh
Muon Software Ltd
www.muon-software.com

 _______________________________________________
Do not post admin requests to the list. They will be ignored.
Coreaudio-api mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:

This email sent to email@hidden

  • Follow-Ups:
    • Re: Garageband 3/audio units odd behaviour
      • From: Stefan Gretscher <email@hidden>
  • Prev by Date: Problem opening *some* audiofiles via AudioFileOpenWithCallbacks
  • Next by Date: implementing an AudioHardwarePlugin
  • Previous by thread: Problem opening *some* audiofiles via AudioFileOpenWithCallbacks
  • Next by thread: Re: Garageband 3/audio units odd behaviour
  • Index(es):
    • Date
    • Thread