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Article #568

How to capture single frames from cams to memory

#568
From: Karel
Date: Thu, 07 Aug 2003 15:20
20 lines
1626 bytes
I need to capture (on client demand) a single frame from one of more cams to
memory (and send it to him - it's ok). I've tried the capXXX API functions.
It would go, but:

- after connecting a capture window to a capture driver, it consumes a lot
of CPU resources. As it's a technological application I don't like it.

- when the client wants to choose another cam, the app. must use
camDlgVideoSource() and it opens a dialog. But the client is remote (over
TCP/IP), he cannot handle this dialog.

Any suggestions ?

In MSDN I found a notice about messages like DVM_FRAME, DVM_FORMAT and
function SendDriverMessage(). Is this the right way? Where could I get to
know more?

Thanks a lot

Karel
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From: "Karel" <ksvacina@atlas.cz>
Newsgroups: borland.public.cppbuilder.multimedia
Subject: How to capture single frames from cams to memory
Date: Thu, 7 Aug 2003 17:20:28 +0200
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