• Open Menu Close Menu
  • Apple
  • Shopping Bag
  • Apple
  • Mac
  • iPad
  • iPhone
  • Watch
  • TV
  • Music
  • Support
  • Search apple.com
  • Shopping Bag

Lists

Open Menu Close Menu
  • Terms and Conditions
  • Lists hosted on this site
  • Email the Postmaster
  • Tips for posting to public mailing lists
Audio Controls
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

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
_______________________________________________
coreaudio-api mailing list | email@hidden
Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/coreaudio-api
Do not post admin requests to the list. They will be ignored.

  • Follow-Ups:
    • Re: Audio Controls
      • From: Jeff Moore <email@hidden>
  • Prev by Date: Re: Addressing the QuickTime software synth (as MusicDevice)
  • Next by Date: Re: New CoreAudio SDK...?
  • Previous by thread: Re: Addressing the QuickTime software synth (as MusicDevice)
  • Next by thread: Re: Audio Controls
  • Index(es):
    • Date
    • Thread