Re: input playthru stereo panning
Re: input playthru stereo panning
- Subject: Re: input playthru stereo panning
- From: Jeff Moore <email@hidden>
- Date: Tue, 21 Feb 2006 11:02:36 -0800
The IOAudio family doesn't currently support the stereo pan control.
The HAL's support is there for user-land drivers.
On Feb 21, 2006, at 10:54 AM, Eric Muehlhausen wrote:
I am implementing direct monitoring / playthru in an IOAudioFamily
kernel-mode driver. I've got the on/off toggle and per-channel play-
through level controls implemented in my driver such that they work
from HALLab. Now I need to add stereo panning controls (so that my
device's internal mixer can properly pan the inputs while playthru
is enabled), but I'm not sure of the correct way to do this.
From the client (user-mode) side, it looks like
kAudioDevicePropertyPlayThruStereoPan
kAudioDevicePropertyPlayThruStereoPanChannels are meant to provide
the functionality I'm looking for. However, it's not clear to me
what the corresponding IOAudioControl-derived class and control sub-
type would be on the driver side. Neither HALLab nor the
AudioReflectorDriver project show examples, either. Can anyone shed
some light on this for me?
--
Jeff Moore
Core Audio
Apple
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