[wdmaudiodev] Re: help with virtual audio driver.
- From: admin@xxxxxxxxxxxxxxxxx
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Wed, 12 May 2004 09:43:57 +0800 (CST)
Hi, Raza:
Mainly I want to capture and have a chance to modify the audio data to (and
from) the card.
I think the filter may be solution if it is between the dsound/waveout and the
output sound device.
I really appreciate if you can help.
> Hi,
> I had the same issue at hand a little while ago and i wrote to a company who
> just writes DirectShow filters, they responded by sayin that this cannot be
> done using DirectShow filters and then i found out i need to write a upper
> filter for audio.sys. I am not pursuing this project anymore but just
> letting u know of my findings which will speed up ur decision making.
> Let me know if u need further help.
> btw i m still interested in coding it , if u agree we can do it together .
>
> Regards
> Raza
>
>
>
> ----- Original Message -----
> From: "Tim Roberts" <timr@xxxxxxxxx>
> To: <wdmaudiodev@xxxxxxxxxxxxx>
> Sent: Tuesday, May 11, 2004 5:50 PM
> Subject: [wdmaudiodev] Re: help with virtual audio driver.
>
>
>> admin@xxxxxxxxxxxxxxxxx wrote:
>>
>> >Thanks for the reply.
>> >
>> >Actually
>> >I want to make it a virtual audio driver. It don't need a specific
> hardware. It uses the sound
>> >card to play or record. But it acts like a true audio device there. So
> apps that use it can work
>> >normally, but I can have control on the data stream in this driver now.
>> >
>> >I have looked at MSVAD driver in WINXP DDK. It writes the data to disk. I
> wonder how to send the
>> >data to another true sourd device at the same time.
>> >
>> >
>>
>> I don't think you really want a driver. You want a filter. You can do
>> all of this in user mode by writing a DirectShow filter.
>>
>> --
>> - Tim Roberts, timr@xxxxxxxxx
>> Providenza & Boekelheide, Inc.
>>
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>
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