[wdmaudiodev] Re: sample User mode installable multimedia driver
- From: Larry Osterman <Larry.Osterman@xxxxxxxxxxxxx>
- To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Mon, 23 Mar 2009 16:33:17 +0000
One other point: The wid/wodMessage audio driver model is totally unsupported
(as in "it doesn't work") for the mixer family of APIs in Vista and beyond and
is only supported for waveIn and waveOut for the purpose of enabling a
relatively small set of existing audio applications that require this
functionality.
As Frank mentioned, it is STRONGLY recommended that no new development be done
on this driver model.
Larry
-----Original Message-----
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of uwekirst
Sent: Friday, March 20, 2009 3:04 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: sample User mode installable multimedia driver
Let me summarise some more dissadvantages of the wid/wodMessage driver:
-the buffer handling in the ddk example code is difficult to understand
-the compatibility testing is awfull (there are so many different mme
apps out there)
-you dont know wether ms will support this driver model in future os
(will the driver be installable in the future?).
-On vista you have to be administrator to access the driver (this may be
a bug within my driver implementation or the app that use my driver?)
-sample code does not support pnp (too old).
-sample code does not support 64 bit: dont know how to handle 32 bit
apps within 64 bit os. Is it possible to install a 32 bit user mode
driver on a 64 bit system? How? Or does the os translate 32 bit driver
calls into 64 ones.
(a 64 bit driver does not make sense, because there are no 64 bit apps
so far)
/Uwe
Vipin Kumar schrieb:
> Hi,
> i am trying to write a user mode installable multimedia driver (
> basically i want to implement the wodMessage ).
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