[wdmaudiodev] Wave miniport property request handling
- From: "Daniel E. Germann" <deg@xxxxxxxx>
- To: "WDM Audio Developers List" <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Wed, 21 Apr 2004 10:36:51 -0500
I have two semi-related questions about wave miniport property request
handling.
1. Can a wave miniport property handler routine pend its associated IRP and
complete it later? In other words:
IoMarkIrpPending(pPropertyRequest->Irp);
return STATUS_PENDING;
And at some later time and place, do (please pardon any syntax errors):
pSavedPropertyRequest->Irp->IoStatus.Information = ulLength;
pSavedPropertyRequest->Irp->IoStatus.Status = STATUS_SUCCESS; // or
whatever
IoCompleteRequest(pSavedPropertyRequest->Irp, IO_NO_INCREMENT);
return STATUS_SUCCESS; // or whatever
Or will that cause problems for PortCls?
2. Will a wave miniport property handler routine always be called in the
context of the thread that issued the request?
The motivation behind these questions is finding a (hopefully painless) way
to add support for ASIO to an existing wave miniport.
Thank you!
-Dan
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