input playthru stereo panning
input playthru stereo panning
- Subject: input playthru stereo panning
- From: "Eric Muehlhausen" <email@hidden>
- Date: Tue, 21 Feb 2006 10:54:00 -0800
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?
Thanks,
Eric
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