It&#39;s no problem glad to help, and thanks for the quick response and fix!<div><br></div><div>Thanks,</div><div><br clear="all">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br>William Woodall<br>Graduate Software Engineering<br>Auburn University<br>

<a href="mailto:w@auburn.edu" target="_blank">w@auburn.edu</a><br><a href="mailto:wjwwood@gmail.com" target="_blank">wjwwood@gmail.com</a><br>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br>
<br><br><div class="gmail_quote">On Wed, Sep 8, 2010 at 5:39 PM, Tim Field <span dir="ltr">&lt;<a href="mailto:tfield@willowgarage.com">tfield@willowgarage.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">

Thanks for the detailed bug report, William.  That really saves us time.<div><br></div><div>I&#39;ve created a ticket here: <a href="https://code.ros.org/trac/ros-pkg/ticket/4415" target="_blank">https://code.ros.org/trac/ros-pkg/ticket/4415</a>.</div>



<div><br></div><div><a href="https://code.ros.org/trac/ros-pkg/ticket/4415" target="_blank"></a>Tim<br><br><div class="gmail_quote"><div><div></div><div class="h5">On Wed, Sep 8, 2010 at 3:21 PM, William Woodall <span dir="ltr">&lt;<a href="mailto:wjwwood@gmail.com" target="_blank">wjwwood@gmail.com</a>&gt;</span> wrote:<br>



</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div></div><div class="h5">When playing around with the ccny&#39;s Augmented Reality demos I viewed one of their provided bag files in rxbag and I received this exception:<div>



<br></div><div><div>Error loading image on topic /usb_cam/image_raw: buffer is not long enough</div>

<div>Exception in thread Thread-1:</div><div>Traceback (most recent call last):</div><div>  File &quot;/usr/lib/python2.6/threading.py&quot;, line 532, in __bootstrap_inner</div><div>    self.run()</div><div>  File &quot;/opt/ros/cturtle/ros/tools/rxbag/src/rxbag/timeline_cache.py&quot;, line 95, in run</div>





<div>    msg_stamp, item = self.loader(topic, stamp, item_details)</div><div>  File &quot;/opt/ros/cturtle/stacks/visualization/rxbag_plugins/src/rxbag_plugins/image_timeline_renderer.py&quot;, line 177, in _load_thumbnail</div>





<div>    thumbnail_bitmap = image_helper.pil_to_cairo(thumbnail)</div><div>  File &quot;/opt/ros/cturtle/stacks/visualization/rxbag_plugins/src/rxbag_plugins/image_helper.py&quot;, line 117, in pil_to_cairo</div><div>    return cairo.ImageSurface.create_for_data(data, cairo.FORMAT_ARGB32, w, h)</div>





<div>TypeError: buffer is not long enough</div></div><div><br></div><div>It seems to me that problem is to do with how the images are being loaded into cairo, or are a limitation of cario.</div><div><br></div><div>My system:</div>





<div>Guest Ubuntu Lucid Lynx 10.04 on a Host OS X Laptop:</div><div>CTurtle binary install 1.2.x</div><div>libcairo2-dev version 1.8.10-2ubuntu1</div><div><br></div><div>Steps to reproduce:</div><div>1. Get the bag files for the ccny ar_pose demo, instructions: <a href="http://www.ros.org/wiki/ar_pose" target="_blank">http://www.ros.org/wiki/ar_pose</a></div>





<div>2. roscd ar_pose/demo</div><div>3. rxbag usb_cam_topics_ar_multi.bag</div><div>4. Enable thumbnails</div><div>Or</div><div>5. View the &quot;Image&quot; of an Image topic</div><div>6. The images will not appear and the exception will be in the terminal where rxbag was launched from.</div>





<div><br></div><div>If I need to create a ticket for this let me know and I will.</div><div><br></div><div>Thanks,</div><div><br clear="all">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br>William Woodall<br>Graduate Software Engineering<br>





Auburn University<br><a href="mailto:w@auburn.edu" target="_blank">w@auburn.edu</a><br><a href="mailto:wjwwood@gmail.com" target="_blank">wjwwood@gmail.com</a><br>256-345-9938<br>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br>
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