[wdmaudiodev] Re: Exposing several ranges
- From: Matthew van Eerde <Matthew.van.Eerde@xxxxxxxxxxxxx>
- To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Wed, 19 Oct 2011 17:58:06 +0000
KSAUDIO_SPEAKER_7POINT1_SURROUND (0x60f) may be a better option than 0xff.
Is your driver a portcls miniport?
Portcls comes with a default Data Range Intersection handler which handles
format support requests. This default handler honors support requests for mono
and stereo PCM.
If your support is anything other than this (e.g., you don't support mono, or
you support a compressed format, or you support multichannel) then you need to
write and register your own data range intersection handler.
If you do implement a data range intersection handler, are you getting calls to
it?
-----Original Message-----
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Robert Bielik
Sent: Wednesday, October 19, 2011 10:51 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: Exposing several ranges
Matthew van Eerde skrev 2011-10-19 17:59:
> I believe the Sound control panel will show 88.2 kHz as an option in Windows
> 7.
Ok, that means my application will still need to let the user set the
samplerate.
But another question: When I let my device expose 8 channels, and I click
"Configure Speakers..." to bring up the config dialog, the "Audio channels"
list is empty, whereas a USB device I have supporting 8 ch does have it
populated with "Stereo/Quadraphonic/5.1 Surround/7.1 Surround".
Also, when I let my device expose 2 channels, the "Audio channels" list
contains "Stereo" only (of course).
How do I get "Configure Speakers" to show the Stereo/Quad/5.1/7.1 configs ?
KSPROPERTY_AUDIO_CHANNEL_CONFIG is implemented and returns 0xFF when queried
(in 8 ch mode).
TIA
/Rob
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