Re: Component on top of a driver?
Re: Component on top of a driver?
- Subject: Re: Component on top of a driver?
- From: Jeff Moore <email@hidden>
- Date: Wed, 15 Jun 2005 14:37:34 -0700
In theory, you could accomplish this by writing a user-land driver
(see <CoreAudio/AudioHardwarePlugIn.h>) that creates a virtual device
that is implemented by using the HAL's API to forward everything to
another device.
On Jun 14, 2005, at 11:54 PM, Christof Faller wrote:
Dear list,
I am developing an algorithm which converts 2-channel stereo signals
into multi-channel audio signals. For example, a stereo signal is
converted
into 8 channels for playing back over 8 loudspeakers arranged on a
line.
The goal is to play back stereo signals over more loudspeakers in
order
to create a more impressive stereo image and extend the sweet spot.
Now my question:
Is it possible to write something like a component operating right on
top of a device driver. The goal would be that one could use any
stereo-based program (e.g. iTunes), which would "see" a stereo
devices,
but effectively my algorithm just before the real device driver would
generate more channels. For example this could work such that in the
audio control panel every multi-channel devices would also be visible
as a stereo devices (with my algorithm linked in).
Can this be done transparently, such that any existing stereo
application
could access multi-channel devices through my driver, despite of the
fact that the application supports only stereo?
--
Jeff Moore
Core Audio
Apple
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