Re: CoreAudio Plug-In
Re: CoreAudio Plug-In
- Subject: Re: CoreAudio Plug-In
- From: Jeff Moore <email@hidden>
- Date: Mon, 19 Nov 2001 14:15:02 -0800
on 11/19/01 9:24 AM, Sean Morrell <email@hidden> wrote:
>
When downloading the AppleOnboardAudio driver from Open Source, it appears
>
the plug-in isn't implemented. Are there any other Audio HAL plug-ins
>
that are implemented?
Not that I'm aware of. They should be easy enough to write as they're the
simplest kind of CFBundle there is. If you have questions, here's the place
to ask them.
>
The plug-in was suggested as a method of communicating between a system
>
preference pane and our audio driver.
The HAL's plug-in mechanism is for providing more properties than the
default implementation provides or overriding the behavior of a default. The
System Prefs panel for sound probably would not be able to access your
unique properties since it doesn't know about them now and would need code
to access them.
>
Besides plug-ins, what other form
>
of IPC is recommended? I was thinking about Distributed Notifications.
The kind of IPC mechanism you use is going to wholly depend on what you are
trying to do.
>
Can this and other Core Foundation services can be used in the kernel?
User-land services in general are not available in the kernel.
--
Jeff Moore
Core Audio
Apple