[wdmaudiodev] Re: Multichannel capture in Vista
- From: Uwe Kirst <u.kirst@xxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Fri, 15 Aug 2008 14:58:48 +0200
I wasnt successful with multichannel record under vista so far.
I consider this as a bug,
Playback seems to work though,
/Uwe
Eugene Muzychenko schrieb:
Hello!
What is needed to support multichannel capture in WavePci miniport
driver under Vista?
My driver returns multichannel support in data intersection requests
and supports
KSPROPERTY_CONNECTION_PROPOSEDATAFORMAT / KSPROPERTY_AUDIO_CHANNEL_CONFIG
property requests.
Under XP (SP2/SP3) I can open the device using MME (waveInOpen) with
multichannel formats (for example, 5.1). But under Vista, waveInOpen
always returns MMSYSERR_INVALPARAM.
When I open Recording tab in the Sound applet, open my device
properties, open Advanced tab and select "6 channels, 44100" (or
48000), my driver receives KSPROPERTY_AUDIO_CHANNEL_CONFIG/SET request
for the ADC node with the zero configuration mask. When I issue
waveInOpen from my application, the driver receives
KSPROPERTY_AUDIO_CHANNEL_CONFIG/GET request and returns previously
saved mask (0). Then a 6-channel stream is successfully created,
successfully set to KSSTATE_RUN with no data buffers, then
successfully stopped/destroyed and MMSYSERR_INVALPARAM is returned.
What are additional requirements for Vista? Or there is a system bug
that prevents multichannel recording?
Regards,
Eugene
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