Audio Controls
Audio Controls
- Subject: Audio Controls
- From: "Sean Morrell" <email@hidden>
- Date: Wed, 5 Feb 2003 14:23:13 -0600
I am writing a driver for a device that has several level controls for each
channel. Creating the controls in the driver is working fine. At least it
doesn't fail when I add them to the device. But from Daisy and AMS I don't
see the controls. In fact, the typical volume slider for the volume control
that I have added is not enabled. Thinking this might be an application
presentation issue, I quickly browsed the CoreAudio HAL API. I found
property identifiers for volume, mute and playback. But I don't see how
information can be obtained regarding other controls of a device. What am I
overlooking? Is there provision to have multiple level controls for each
channel? What function and property ids are involved?
Thanks,
Sean
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