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Mailing lists / lazarus / 2012-02

Webcam access

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Unknown author
to Dhanu M

There are several ways to do it. On Linux you can use V4L, on windows there are VFW or DirectShow (and more). I have even bindings to OpenCV which provide access. My plan has always been to create a plugable crossplatform library, but so far I have not had the time yet. If you want we can discuss offline.

Regards, Darius

Dhanu M wrote
hi: how to access the web camera in the lazarus..,

is there any component for access the webcamera..

pls reply --

Regards,

Dhanasekaran M

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Henry Vermaak
to Reimar Grabowski
Reimar Grabowski wrote 7 lines
On Thu, 16 Feb 2012 08:07:57 +0100 wrote: <snip> > I have even bindings to OpenCV Would you mind sharing these bindings? Either by providing a download link or sending them to me personally.

Just be careful of using OpenCV directly from fpc, since there are some stack alignment issues. See this thread:

http:/msg24805.html

Henry

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Reimar Grabowski
to Henry Vermaak
Just be careful of using OpenCV directly from fpc, since there are some stack alignment issues. See this thread: http:/msg24805.html

Thanks for the info, as I am not on the devel list, I did not know about such problems. The thread talks about i386 but my target would be arm, does anybody know of problems there, too? I can also ask this on the fpc list if nobody has any information or thinks that this topic should be moved there.

R.

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Henry Vermaak
to Reimar Grabowski
Reimar Grabowski wrote 10 lines
On Thu, 16 Feb 2012 14:03:25 +0000 Henry Vermaak wrote: > Just be careful of using OpenCV directly from fpc, since there are some > stack alignment issues. See this thread: > > http:/msg24805.html Thanks for the info, as I am not on the devel list, I did not know about such problems. The thread talks about i386 but my target would be arm, does anybody know of problems there, too?

This is i386 specific, so there shouldn't be any problems. At least my program works fine on ARM, but I'm using OpenCV through another library that's written in C.

Henry

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