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From: gussing on 22 Oct 2007 04:03
hi everyone
I found that KsPinGetLeadingEdgeStreamPointer ( pin,
KSSTREAM_POINTER_STATE_LOCKED ) always returns NULL in my driver , why
is that?

if I set second parameter into KSSTREAM_POINTER_STATE_UNLOCKED , the
return value is not NULL , but I can't writer any data into it

os£º Vista Ultimate
ddk£º WDK 6000

thanks

From: Tim Roberts on 23 Oct 2007 01:31
gussing <gussing(a)gmail.com> wrote:
>
>I found that KsPinGetLeadingEdgeStreamPointer ( pin,
>KSSTREAM_POINTER_STATE_LOCKED ) always returns NULL in my driver , why
>is that?

Has the graph already transitioned to KSSTATE_PAUSE or KSSTATE_RUN? What
kind of device/filter is this?
--
Tim Roberts, timr(a)probo.com
Providenza & Boekelheide, Inc.
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