From: "Daniel Glöckner" <daniel-gl@gmx.net>
To: Michael Williamson <michael_h_williamson@yahoo.com>
Cc: video4linux-list@redhat.com
Subject: Re: question
Date: Sun, 2 Mar 2008 01:24:22 +0100 [thread overview]
Message-ID: <20080302002422.GB1691@daniel.bse> (raw)
In-Reply-To: <527852.36382.qm@web65508.mail.ac4.yahoo.com>
On Sat, Mar 01, 2008 at 02:49:42PM -0800, Michael Williamson wrote:
> With CX100 frame grabbers, it is possible to poll the
> even/odd video field bit through the ISA bus.
> This is useful to have for cameras with electronic
> shutters to make long exposures. Is it possible to do
> with v4l2/bt848 PCI devices?
This information is available in the DSTATUS and INT_STAT register of the
bt848 but it is not exposed to userspace by the driver.
You can capture fields seperately to be informed of field changes.
Daniel
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next prev parent reply other threads:[~2008-03-02 0:25 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-01 21:33 newbie programming help: grabbing image(s) from /dev/video0, example code? Elvis Chen
2008-03-01 22:21 ` Carl Karsten
2008-03-01 22:49 ` question Michael Williamson
2008-03-02 0:24 ` Daniel Glöckner [this message]
2008-03-01 23:48 ` newbie programming help: grabbing image(s) from /dev/video0, example code? Daniel Glöckner
2008-03-03 20:09 ` Elvis Chen
2008-09-29 20:58 ` Elvis Chen
2008-09-30 12:45 ` Daniel Glöckner
-- strict thread matches above, loose matches on Subject: below --
2009-04-06 15:07 question Juan Diego
2009-04-08 13:55 ` question Alexey Klimov
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