Can't call both sync_get_video() and open_device() in Python wrapper

[temccarthy]

I wrote a program that gets the video and depth information from my kinect using sync_get_video() and sync_get_depth(), and that works perfectly fine. However, when I add ctx = freenect.init() dev = freenect.open_device(ctx, 0) to the beginning of the program, I get Failed to claim camera interface: LIBUSB_ERROR_BUSY. Thus I can't access anything else for the kinect like the led or tilt motor.

[piedar]

Unfortunately the sync wrapper takes full control over devices, so there's no way to use it with custom device management in the same program.

[logan-tan]

@piedar Can you elaborate on this? Does this mean that I cannot modify the device settings and capture images in the same program or am I misunderstanding?

[piedar]

@logan-tan The sync API and regular API both provide methods to modify settings and capture images. The problem comes when mixing the two. The sync code handles all of the setup and configuration and is meant to be used as a wrapper. So you must choose between only sync methods or only non-sync methods. (Ideally I think there should have been two separate python modules to avoid this confusion.)

The original question was about the tilt capabilities, which can be set via the sync API but unfortunately the python wrapper does not expose these tilt methods.