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From: cookd on 21 Feb 2006 15:28

hi Tim,
I was planning to do this in kernel mode because actually I need to
create a "fake capture device"...I have an application that don't read
avi directly, but anyway look for all the capture devices (webcam,
ie1394, everithing...) installed... so I planned to create a fake
hardware that stream out the avi file that I pass to it....
can I do the same with directshow?
thanks



--
cookd
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Posted via http://www.codecomments.com
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From: Max Paklin on 22 Feb 2006 15:12
If you are trying to learn how to do multimedia streaming in Windows kernel
you shouldn't try to quickly write some code and see how nicely it
bluescreens the OS.
You have a few good samples to start with. By the time you went through
them - and by that I mean browsed them, built them, debug them,
single-stepped in a debugger - you will have a better idea on how to change
them conciously.

Also read a book on Windows kernel - Walter Oney 2nd edition is that usually
recommended.
Opening AVI files in kernel is not a very smart idea.

-- Max.



"cookd" <cookd.23kpxs(a)mail.codecomments.com> wrote in message
news:cookd.23kpxs(a)mail.codecomments.com...
>
> Thank you Max,
> I'm also new as driver writer and till now I've read a lot of articles
> about driver structure and behaviours. the difficult is turn theory
> into practice, and the suggestions were about that.... for example some
> code lines...how can I substitute the avi stream with the test one in
> practice?
>
>
>
> --
> cookd
> ------------------------------------------------------------------------
> Posted via http://www.codecomments.com
> ------------------------------------------------------------------------
>


From: Tim Roberts on 23 Feb 2006 00:53
cookd <cookd.23lvmb(a)mail.codecomments.com> wrote:
>
>I was planning to do this in kernel mode because actually I need to
>create a "fake capture device"...I have an application that don't read
>avi directly, but anyway look for all the capture devices (webcam,
>ie1394, everithing...) installed... so I planned to create a fake
>hardware that stream out the avi file that I pass to it....
>can I do the same with directshow?

Absolutely. Your application looks for capture devices by enumerating the
user-mode filters in the video capture category. Some of those user-mode
filters are actually proxies for kernel devices, but purely user-mode
filters qualify as well.

You can use the Filters\PushSource sample as an example. Just change the
DllRegisterServer entry point to use IFilterMapper2 to add yourself to to
the CLSID_VideoInputDeviceCategory category.
--
- Tim Roberts, timr(a)probo.com
Providenza & Boekelheide, Inc.
From: Maxim S. Shatskih on 23 Feb 2006 08:43
Fake capture devices are implementable in user mode as DirectShow filters.

--
Maxim Shatskih, Windows DDK MVP
StorageCraft Corporation
maxim(a)storagecraft.com
http://www.storagecraft.com

"cookd" <cookd.23lvmb(a)mail.codecomments.com> wrote in message
news:cookd.23lvmb(a)mail.codecomments.com...
>
> hi Tim,
> I was planning to do this in kernel mode because actually I need to
> create a "fake capture device"...I have an application that don't read
> avi directly, but anyway look for all the capture devices (webcam,
> ie1394, everithing...) installed... so I planned to create a fake
> hardware that stream out the avi file that I pass to it....
> can I do the same with directshow?
> thanks
>
>
>
> --
> cookd
> ------------------------------------------------------------------------
> Posted via http://www.codecomments.com
> ------------------------------------------------------------------------
>

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