Article View: borland.public.cppbuilder.multimedia
Article #568How to capture single frames from cams to memory
From: Karel
Date: Thu, 07 Aug 2003 15:20
Date: Thu, 07 Aug 2003 15:20
20 lines
1626 bytes
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
Technical Details
Message-ID:
<3f326e26@newsgroups.borland.com>Path:
arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!sn-xit-02!sn-xit-06!sn-xit-08!supernews.com!newsfeed.news2me.com!news-out.visi.com!petbe.visi.com!newsfeed.wirehub.nl!news.kweb.on.ca!KWeb!newsgroups.borland.com!not-for-mailShow Full Headers
Complete Article Headers
X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 10d0fc,33f0763e846f9074,start X-Google-Attributes: gid10d0fc,public X-Google-ArrivalTime: 2003-08-07 08:27:27 PST 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 Lines: 26 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 5.00.2919.6700 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6700 NNTP-Posting-Host: 62.177.83.155 Message-ID: <3f326e26@newsgroups.borland.com> X-Trace: newsgroups.borland.com 1060269606 62.177.83.155 (7 Aug 2003 08:20:06 -0700) Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!sn-xit-02!sn-xit-06!sn-xit-08!supernews.com!newsfeed.news2me.com!news-out.visi.com!petbe.visi.com!newsfeed.wirehub.nl!news.kweb.on.ca!KWeb!newsgroups.borland.com!not-for-mail