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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I’ll be happy to supply you with
whatever direct assistance you need with using the DirectShow APIs. Not
only does this abstract the details of VfW and WDM drivers, it provides you a
nice clean sample through the IMediaSample interface. To see how to do
this easily, I’d recommend going through the NullNull sample that comes
with the DirectShow SDK which simply passes the IMediaSample to you and does
nothing with it.</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>In addition to being able to get the raw
media frames, you also get the advantage of having all your capture and render
work done for you. The renderer under Windows XP is extremely advanced
with built-in support for hardware acceleration from a ton of video cards and
very interesting features such as ability to draw into a DirectX surface of
your choosing, ability to do alpha blending, windowless rendering, blending of
video streams, etc.</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>If you decide you want to work at a lower
level than the DirectShow APIs, I’ll be happy to set up a conversation
with our Device Driver Development Kit support guys. They should be able
to help you demystify any issues you’re running into.</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> - jcb</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>-----Original Message-----<br>
<b><span style='font-weight:bold'>From:</span></b> Robert Olson
[mailto:olson@mcs.anl.gov] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, July 23, 2001 10:11
AM<br>
<b><span style='font-weight:bold'>To:</span></b> Todd Needham<br>
<b><span style='font-weight:bold'>Cc:</span></b> Jay Beavers; Andy Quay;
ag-tech@mcs.anl.gov<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [AG-TECH] Hi-quality
video</span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> </span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>At 09:06 AM 7/23/2001 -0700, Todd Needham wrote:<br>
<br>
</span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>Bob do you have an MSDN
subscription? If not, let me know and I ll take care of it as part of our
general support of AG.</span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'><br>
Yup. I've looked thru the samples in the past, and found them to be not
immediately useful for what I want to do (get the raw bits of video frames into
my app).<br>
<br>
--bob</span></font></p>
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