[wdmaudiodev] Re: MSVAD as capture device
- From: Ahmed Osama <wiseman_tm@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Mon, 15 Feb 2010 03:30:28 -0800 (PST)
Thanks for the reference ,
but I need to know how to implement CopyFrom() to put the data to the Capture
stream ?
I really appreciate your help as I need to develope a virtual audio cable too.
Thanks a lot for your time
________________________________
From: Michail Nikolaev <michail.nikolaev@xxxxxxxxx>
To: wdmaudiodev@xxxxxxxxxxxxx
Sent: Mon, February 15, 2010 1:05:12 PM
Subject: [wdmaudiodev] Re: MSVAD as capture device
Hello.
See
//www.freelists.org/post/wdmaudiodev/Different-amount-of-data-in-CopyFrom-and-CopyTo-functions-with-same-audio-format
for details.
Michail.
2010/2/15 Ahmed Osama <wiseman_tm@xxxxxxxxx>
>I want to change MSVAD(simple) code to use it as virtual capture device, I
>just need to copy the buffer I recieve inside CopyTo , to an application that
>selects MSVAD as capture device, simply whatever you render on MSVAD can be
>seen as Capture , I tried in many ways as follows:
>>
>1- I keep a copy from the source buffer recieved in CopyTo in a FIFO buffer.
>>2- when CopyFrom is called I try to overwrite the m_pvDmaBuffer using
>>RtlCopyMemory , the problem is that the buffer never changes it's contents
>>all the sound I get from Windows sound recorder is (sha...sha...sha) like
>>sound more like garbage data.
>>
>3- I tried changing the returned address in
>CMiniportWaveCyclicStreamMSVAD::PhysicalAddress to point to my FIFO buffer ,
>but still not working.
>>4- in AllocateBuffer I tried to fill m_pvDmaBuffer with ZERO so I won't get
>>any sound but again nothing happens.
>
>>Note: in CopyTo the ByteCount is 840 bytes , while in CopyFrom it's 48 bytes
>>, I can't change that behavior also to make the buffers match?
>
>>I'v been working for nearly a month now and can't find any information to
>>help me , it's very urgent Please help me.
>>******************
>
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