Re: Find out all IOProcs attached to an Audio device in a Process
Re: Find out all IOProcs attached to an Audio device in a Process
- Subject: Re: Find out all IOProcs attached to an Audio device in a Process
- From: Simon Liu <email@hidden>
- Date: Thu, 14 Oct 2004 20:39:23 +0100
I'm trying to isolate the audio from an arbitrary (foreign) process.
Grabbing the IOProcs
gives access to the data buffers to be sent to the device. I can do
this already,
but am not sure if I have all the IOProcs. So I have also tried using
AUHAL, but
this instead gives me all the audio being sent to the device, from all
processes.
On Thu, 14 Oct 2004 12:14:44 -0700, Jeff Moore <email@hidden> wrote:
> No. There is no way to get the list of IOProcs that have been added to
> a particular device in a particular process. In fact the API was set up
> to keep individual IOProcs ignorant of each other as much as possible.
>
> May I ask what it is you are trying to do? Perhaps I can offer an
> alternative.
>
>
>
> On Oct 14, 2004, at 7:45 AM, Simon Liu wrote:
>
> > Hello,
> >
> > Is it possible to obtain a list of all registered IOProcs for an audio
> > device?
> >
> > kAudioDevicePropertyDeviceIsRunning can tell me if any IOProcs have
> > started. Is there a property that can help with the above?
> >
> > Regards,
> > Simon
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> --
>
> Jeff Moore
> Core Audio
> Apple
>
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