[wdmaudiodev] WaveRT weird problem
- From: Robert Bielik <robert.bielik@xxxxxxxxxx>
- To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Wed, 26 Oct 2011 15:38:02 +0200
Hi all,
I have a weird problem with a WaveRT device (Conexant 20561 SmartAudio HD) on
Windows 7 (a Lenovo PC) , I've checked
KSPROPERTY_RTAUDIO_QUERY_NOTIFICATION_SUPPORT which returns OK and TRUE for
notification support, so subsequently I call
KSPROPERTY_RTAUDIO_BUFFER_WITH_NOTIFICATION:
KSRTAUDIO_BUFFER_PROPERTY_WITH_NOTIFICATION propIn;
KSRTAUDIO_BUFFER propOut;
propIn.BaseAddress = 0;
propIn.NotificationCount = 2;
propIn.RequestedBufferSize = *pRequestedBufSize; << = 5292 (2 * 441
frames/buffer * 6 bytes/frame)
propIn.Property.Set = KSPROPSETID_RtAudio;
propIn.Property.Id = KSPROPERTY_RTAUDIO_BUFFER_WITH_NOTIFICATION;
propIn.Property.Flags = KSPROPERTY_TYPE_GET;
DWORD bytesReturned = 0;
BOOL result = DeviceIoControl(pPin->handle, IOCTL_KS_PROPERTY,
&propIn,
sizeof(KSRTAUDIO_BUFFER_PROPERTY_WITH_NOTIFICATION),
&propOut,
sizeof(KSRTAUDIO_BUFFER),
&bytesReturned,
NULL);
and I get FALSE result and GetLastError() returns ERROR_INVALID_PARAMETER. This
code works fine on _several_ other machines, also on Windows 7 machines, and
the device works fine otherwise in Windows 7, hence I must be doing something
wrong (?)
Ideas?
TIA
/Rob
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