change of KING imaq1394 during the capture

Hello

I use c ++ to implement an application that performs a continuous drain on my firewire camera. According to the manual, there are two ways to do so after an imaq1394CameraOpen2:

(1) imaq1394SetupGrab-> imaq1394Grab2 (several times)

(2) imaq1394ConfigureAcquisition-> imaq1394GetBuffer2-> imaq1394StopAcquisition (several times)

Both options seem to do pretty much the same thing if I put continuous = 1 and bufferCount = 3.

What I didn't understand is the last rectangle parameter. I could put what, but unless I changed the IMG1394_ATTR_FORMAT7_ * with SetAttribute before ConfigureAcquisition, the size of the image would not change, which has been upheld by GetAttribute. Unfortunately, this doesn't seem to work while an acquisition is running. So here's my question: do I have to stop, delete, configure, and start each time I change the return on investment or y at - it another way to do?

Definition of attributes such as shutter time or acquire works very well on the acquisition.

I use a Redlake Megaplus II ES11000 with NOR-DAQ IEEE 1394 version 2.0.1 of pilots.

See you soon,.

Tom

Hi Tom,

In fact, it must cancel the acquisition to change the return on investment. If you want only to move the KING but it has the same size, you may be able to use raw register written in the right registers on your camera to change the position on the fly.

-Eric

Tags: NI Hardware

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