Re: [libdc1394-devel] Re: Problem not getting valid images

[Danny S. <da...@ch...>]

The problem seems to happen whether I hotplug or not.  When it does 
happen, I can restart my application, and still have the problem.  I can 
even re-attach the camera and still see the problem.  I just know that 
in one occasion, I left the camera unattached for about an hour, then 
came back and it worked fine.

My application does do a periodic update of all the cameras in the 
system as well.  I have a wrapper library that maintains a list of all 
cameras, their nodeid's, and their euid's.  All operation are performed 
based on their euids.

I have noticed, however, that once in a while, doing a 
dc1394_get_camera_info() returns bogus values.  I guess there's some 
sort of intermittent communication problem with the 1394 bus?  Whether 
this is the cause of my other problem, I don't know.

I've gotten around this camera info problem by checking the info against 
my list, then retrying if the info doesn't match.  But this is obviously 
a bad hack.



> Are you hotplugging the camera with your application still running?
> 
> Can you give us a step-by-step description of what you do to demonstrate 
> the problem?
> 
> Johann
>