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anqixu / ueye_cam

A ROS nodelet and node that wraps the driver API for UEye cameras by IDS Imaging Development Systems GMBH.
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IS_INVALID_BUFFER_SIZE when enabling subsampling #42

Closed scott-eddy closed 8 years ago

scott-eddy commented 8 years ago

Hi all,

I'm using a UI-3591LE-C-HQ with ueye_cam and am having an issue setting the sub_sampling parameter to anything other than 1. ueyedemo allows subsampling of 2x and 4x, however ueye_cam throws an error for either subsampling option. Selecting either subsampling option from rqt or the launch file outputs:

[ERROR] [1463407478.498894127]: Could not start free-run live video mode for "[camera]" (IS_INVALID_BUFFER_SIZE) [ERROR] [1463407478.499014645]: Shutting down driver nodelet for [camera] [Thread 0x7fffeda5d700 (LWP 5895) exited] [Thread 0x7fffef260700 (LWP 5888) exited] [Thread 0x7fffeea5f700 (LWP 5889) exited] [Thread 0x7fffbaf42700 (LWP 7124) exited] [Thread 0x7fffdbfff700 (LWP 5909) exited] [Thread 0x7fffc0ff9700 (LWP 6025) exited] [Thread 0x7fffc17fa700 (LWP 6022) exited] [Thread 0x7fffc1ffb700 (LWP 6021) exited] [Thread 0x7fffc27fc700 (LWP 6005) exited] [Thread 0x7fffc3fff700 (LWP 5996) exited] [Thread 0x7fffc37fe700 (LWP 5998) exited] [Thread 0x7fffc2ffd700 (LWP 5999) exited] [tcsetpgrp failed in terminal_inferior: Inappropriate ioctl for device] [tcsetpgrp failed in terminal_inferior: Inappropriate ioctl for device] [tcsetpgrp failed in terminal_inferior: Inappropriate ioctl for device] [tcsetpgrp failed in terminal_inferior: Inappropriate ioctl for device] [Thread 0x7fffd9a98700 (LWP 5992) exited] [Thread 0x7fffda299700 (LWP 5994) exited] [Thread 0x7fffd9297700 (LWP 5993) exited] [Thread 0x7fffe57fa700 (LWP 5904) exited] [Thread 0x7fffe4ff9700 (LWP 5905) exited] [Thread 0x7fffed25c700 (LWP 5897) exited] [Thread 0x7fffe5ffb700 (LWP 5903) exited] [Thread 0x7fffe6ffd700 (LWP 5901) exited] [Thread 0x7fffe67fc700 (LWP 5902) exited] [Thread 0x7fffeca5b700 (LWP 5898) exited] [Thread 0x7fffe77fe700 (LWP 5900) exited] [Thread 0x7fffe7fff700 (LWP 5899) exited] [Thread 0x7fffba741700 (LWP 6391) exited] [Thread 0x7fffee25e700 (LWP 5890) exited] [Inferior 1 (process 5870) exited normally]

It looks like a similar (IS_INVALID_BUFFER_SIZE) problem was fixed for binning in https://github.com/anqixu/ueye_cam/commit/2bee82e54e0a303be54e0c949465b968f59a476e. Any advice on how to fix the issue for subsampling?

anqixu commented 8 years ago

Unfortunately my current uEye cam does not support subsampling, so we'll have to look into this together.

Diagnosis steps:

  1. fetch the latest version of ueye_cam from github
  2. either enable debug-level message logging, or in ueye_cam/include/ueye_cam/logging_macros.hpp line 84, switch from NODELET_DEBUG_STREAM to NODELET_INFO_STREAM (and re-compile)
  3. compile source and roslaunch (ensure beforehand that your catkin workspace is overlaid on top of /opt/ros/...)
  4. grab images from the camera successfully, then change subsampling via rqt_reconfigure
  5. copy all output and post somewhere (pastebin)

Potential fix:

Just as in https://github.com/anqixu/ueye_cam/commit/2bee82e54e0a303be54e0c949465b968f59a476e, try removing "cam_subsamplingrate" and "camparams.subsampling" from the highlighted lines. If it works, I'd welcome a pull request or a reply of acknowledgement.

P.S.: please make sure that you are using the latest IDS drivers.

scott-eddy commented 8 years ago

removing those two lines fixes the problem, in the driver camaoi.s32Width/Height change automatically with subsampling factor.

scott-eddy commented 8 years ago

I added PR #43 for a fix.