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From: Max Paklin on 24 Jan 2006 18:47
None.
IKsPropertySet::Set is just a wrapper over DeviceIoControl.

-- Max.



"rep_movsd" <rep.movsd(a)gmail.com> wrote in message
news:1137742947.356552.233000(a)g47g2000cwa.googlegroups.com...
> Hi
> Yes, I decided to use a custom property set as you suggest, so i can
> simply open the DS filter object, get an IKSPropertySet from it and
> send the data to it.
> However, is it advisable to send large amounts of data through property
> sets? Is there a fundamental difference between the CreateFile /
> DeviceIoControl way of sending IRPs and using IKsPropertySet::Set to
> transfer data in terms of performance?
>


From: rep_movsd on 28 Jan 2006 15:48
Hi
Its all in place now , I have a working solution.
I use IKspropertySet on the capture device filter requesting a custom
property and the driver makes a user mode accessible memory block and
passes it via the property data.The user mode app then dumps data into
it.
I found an old post on this group with a function called
XXX_CreateSection which makes the user accessible memory.
So thanks everyone for all the help !!

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