[ros-users] camera1394 - failure to start cameras

[Kim Houck]

I was wondering if anyone else has seen issues with camera1394 throwing 
an exception after failing to start the camera.  I have been dealing 
with an older firewire camera(dc1394 A) that often fails to start on the 
first try(this also occurs using the camera with opencv or the dc1394 
interface directly).

When the camera fails to start properly the camera1394 node needs to be 
restarted to get get the camera to work, which isn't a problem for a 
stand alone node but gets aggravating when using launch files.  I made a 
change to openCamera in camera1394.cpp to have it try again to open the 
camera if it fails the first time and only give up and throw an 
exception if it fails twice.  I was wondering if anyone else has 
encountered this problem and if so if have they found a better solution 
for it?

I'm not sure if this constitutes a bug/change request for camera1394, 
since it may be limited to a very small subset of hardware and I'm not 
sure if fixing this would cause problems for other camera hardware.

Thanks.

-Kim