Re: Help with monitoring system-wide audio
Re: Help with monitoring system-wide audio
- Subject: Re: Help with monitoring system-wide audio
- From: Bob Smith <email@hidden>
- Date: Tue, 27 Nov 2007 13:30:35 -0800
On Nov 26, 2007, at 7:25 PM, Jeff Moore wrote:
QT has it's own APIs for metering movies during playback. Plus, it
also has an API that let's you directly tap the audio. You'll
probably want to talk to the QT folks about these APIs.
Lucky for me, one of the QT folks wandered over to this list and
provided the quick answer I was looking for. But if I need further
help I'll ask on the appropriate QT list.
Of course, this only applies to audio produced by QT. Audio
produced through other means won't be available as there is no
central point in an app that you can tap all audio. (It's a very
distributed model where the participants are deliberately ignorant
of each other.)
I'm starting to get the general idea of the Core Audio system from
studying the docs, and it is very different from the graphics and
video APIs which I'm more familiar with. I hope I have a chance to
actually do something with it in a future project, so I can learn how
it all works!
(A quick overview of the project, in case it helps. This is a
multi-media kiosk display system consisting of a player app plus
"helper" apps to play QuickTime files. The helpers run as
separate processes to prevent QuickTime instabilities and memory
leaks from messing with the player.
Hopefully, you are filing bugs about any such issues rather than
just working around them. We can't fix bugs we don't know about.
Yes I will be filing a bug report about the QT memory leak, it's
easily reproducible.
Thanks for your help!
Bob S.
_______________________________________________
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