[Motmot] Fview color question

[Andrew Straw]

James Waters wrote:
> Andrew,
>
> I started FView by typing "sudo DC1394_DEBUG=1 fview" at the terminal prompt.
>
> I changed the frame buffer from 30 to 5.  (Side question, what is the
> frame buffer?)
>
> The program still does not work on any of the high resolution
> settings.  We get the following kinds of notes in the terminal:
> 1)  libdc1394 debug: Mode 88, 1624x1224, packet size 3680, packets per frame 811
>
> 2)  libdc1394 debug: Mode 88, 1624x1224, packet size 3680, packets per frame 811
> w 1624, wb 2436, stride0 1624, depth 12
>
> 3)  libdc1394 debug: Mode 89, 812x612, packet size 2784, packets per frame 268
> w 812, wb 1218, stride0 812, depth 12
>
> When I selected a pretty low resolution, it worked.  This was the line
> from the terminal:
> libdc1394 debug: Mode 71, 800x600, packet size 2000, packets per frame 480
>
> Unfortunately, to see the ants and their behavior (i.e., their
> antennae), we definitely need higher resolution. What do you think?
>
>   james
>   
Hi James,

The frame buffer is memory allocated by the linux kernel to store the
image data as it's coming in from the cameras. My guess is that you have
rather big images and that the kernel has some kind of upper limit on
the amount of memory it is willing to allocate. So, one question is if
you drop the number to 1 or 2 if it'll work in that case.

Sorry, I haven't tested with a Flea2 camera before, so I'm not sure
about all these ins and outs.

You could also try Coriander and see if that has any of these issues --
if it works fine then we know for sure that the issue is Motmot and we
can hopefully isolate exactly what it is.

-Andrew

-- 
Andrew D. Straw, Ph.D.
California Institute of Technology
http://www.its.caltech.edu/~astraw/