Re: 'tap' device
Re: 'tap' device
- Subject: Re: 'tap' device
- From: Jeff Moore <email@hidden>
- Date: Mon, 11 Feb 2002 12:01:22 -0800
on 2/11/02 4:37 AM, robert <email@hidden> wrote:
>
Is it possible with CoreAudio to create a 'tap' device? (and if so, does
>
anyone have some pointers as where to begin?)
>
>
This would be a virtual in/out audio-device which, for example, takes input
>
from an MP3 player (by selecting in the MP3 player this virtual device
>
as audio-output), does something with the data (say, write it to disk or
>
run it through an AUGraph), and send it forward to another device (say,
>
DefaultOutputDevice)?
>
>
The key here being the ability to select the device as a regular output
>
device in applications.
There isn't any way to do this without being in the kernel.
Once in the kernel, you'd need to write an IOAudio family driver that could
somehow glom on to another driver. As I understand it, the IOAudio family
wasn't designed with this sort of thing in mind, so your best reference
would be the actual source code in Darwin.
--
Jeff Moore
Core Audio
Apple
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