[wdmaudiodev] Re: about DMA buffer
- From: karthiksharmasg@xxxxxxx
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Fri, 19 Sep 2008 04:24:21 -0400
Hi ALL,
?????????????? Finaly i am able to finish the virtual mic and speaker
problem,?my team?got the code working.
Thanks For all the support from the freelists member
Karthik SG
-----Original Message-----
From: Tim Roberts <timr@xxxxxxxxx>
To: wdmaudiodev@xxxxxxxxxxxxx
Sent: Wed, 17 Sep 2008 4:10 am
Subject: [wdmaudiodev] Re: about DMA buffer
karthiksharmasg@xxxxxxx wrote:
>
> Thanks Tim, For that message.
> All this weekend i gone through the DDK
> documentation and got the knowledge of MSVAD.
> Now i am using an shared memory to feed the recorder
> from the o/p of the player, I followed the following steps
> 1. Create an section using ZwCreateSection.
> 2. opened this section using ZwOpenSection
> 3. Mapped the opened section to the current process virtual
> add space using ZwMapViewOfSection
> 4. Writting to the section using RtlCopy Memory
>
> Untill step 4 all went good but while writing to the virtual
> address space i am getting crash "0X00000D1, {28d0000, 2, 1, a9b10dea}"
> Can any ane explain me what is wrong, Can i use RtlCopyMemory in
> this senario or Not??
28D0000 is a user-mode address. You will need to use the kernel-mode
address for your section when doing your copy.
--
Tim Roberts, timr@xxxxxxxxx
Providenza & Boekelheide, Inc.
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