Video stream freezes when both rgb and depth streams are used at the same time in 640x320 (or higher) mode.

[sumittada]

How to reproduce: update the NiViewer with give files and run it by selecting the new "Color & Depth" option. Choose 640x480@30 Rgb888 for Video mode and 640x480@30 Depth 1Mm. Click the Update button and let the stream run for a few minutes. One or both the streams freeze after a few minutes of running.

Extra details of the test run:

• We have noticed that this problem occurs on one of our machines and doesn't occur on the other. In our bug tracker we have seen it happening to at least 5-6 other users with different OS and architecture.
• It doesn't seem to be a hardware problem either because I can run the Sample Viewer that comes with OpenNI SDK with both streams running successfully at the same time on the same resolution mode.
• The same thing also happens if rgb is in 1280x1024 mode and depth in 640x480 mode, and doesn't happen if one of them or both are in 320x240 mode.
• It also doesn't seem to be directly related to a memory leak or any problem with resources as I didn't notice anything strange when monitoring the system memory with task manager while the application runs.

[sumittada]

Here are the sample code files to reproduce the problem. They are taken from the sample NiViewer.Net and the problem can be reproduced when the "Color & Depth" option is chosen with both streams in 640x480 mode.

https://gist.github.com/sumittada/9829236
https://gist.github.com/sumittada/9829242

[falahati]

Thanks sumitta,
let me take a look at this, I will get back to you asap.

[falahati]

Unfortunately I couldn't reproduce the issue. Tried compiling as both 32 and 64bit and tested with two devices. (Kinect, Asus Xtion)

I am going to try it on an other machine and see if I can see the problem. Yet I am little busy now.

[sumittada]

Thanks for checking it out! I hope it can be reproduced on other machine. If that doesn't succeed, what do you think is the best way to debug it? Maybe we could try a remote-debug session?

[vidstige]

I'm still seeing this alot. Perhaps we can keep it open for now? I'm suspecting its actually a bug in the OpenNI C-layer.

[falahati]

Unfortunately as I cant reproduce the bug, I cant debug it either. I ask you guys to try to debug it if you had the time and encountered this bug. Even though I am not really sure if this problem is in the wrapper layer, I can guess that it is a multitasking or a buffering problem.

[falahati]

I checked this issue again using the latest release of the library and it wasn't there. But then again I never had this error. So it might be a Kinect thing and I don't have a Kinect anymore.