Hi,
I’ve had some luck getting OpenNI samples to work on the Mac, and I
still have a few issues as well. I thought it may be helpful to
explain what I’ve done and what my results are.
I am running a MacBook Pro (model 3,1), with a dual-core 2.4GHz cpu,
which was purchased in 2007. The OS is 10.6.6. I picked up a Kinetic
the other night, but we will soon order a Primasense sensor to
hopefully simplify matters.
I downloaded the latest unstable version of OpenNI yesterday, followed
the read-me very carefully and everything built successfully. I had
not previously installed anything from MacPorts, so it did take over
an hour - all the time was going into fetches for dependencies.
Next, I loaded avin2’s driver, but I was getting some ‘Bad Parameter’
errors along with an error about USB priority. Looking back, I think
I could have gotten it to work, but instead, I downloaded the ros
driver and installed it.
The README with the ros driver says, “Each process using the device
driver should have the CAP_SYS_NICE capability in order to raise
thread priority. Failing to have that capability, will cause a failure
in setting priority, consequently causing loss of data.” I don’t
really know how to do this (I assume at the BSD level of MacOS), but
I’ll have to figure it out and put appropriate code in the samples’
source and rebuild, unless anyone can tell me what to do on this.
Finally, I downloaded the NITE binaries and installed them, then
edited the XML files in the Data directory to change 320 X 240
occurrences to 640 X 480.
I’ve been running the sample executables as root, just to eliminate
any privilege issues with the USB driver for now.
It seems that the only real issue is the problem with setting priority
on the USB. The holy grail for me will be when I can have gestures
come in as events in Cocoa applications, but what’s out there is a
great start.
Here are my results so far:
sh-3.2# pwd
/Users/poirotsj/Dropbox/Documents/Development/OpenNI/Nite-1.3.0.18/
Samples/Bin
sh-3.2# ./Sample-Boxes
Setting resolution to VGA
Warning: USB events thread - failed to set priority. This might cause
loss of data...
(... and the screen came up)
sh-3.2# ./Sample-CircleControl
Setting resolution to VGA
Warning: USB events thread - failed to set priority. This might cause
loss of data...
(... and the screen came up)
sh-3.2# ./Sample-Players
Could not find data file /usr/etc/primesense/XnVFeatures/s.dat
current working directory = /Users/poirotsj/Dropbox/Documents/
Development/OpenNI/Nite-1.3.0.18/Samples/Bin
(... I created /usr/etc/primesense/XnVFeatures and copied all the
files from the Nite XnVFeatures to it, then...)
sh-3.2# ./Sample-Players
Warning: USB events thread - failed to set priority. This might cause
loss of data...
(... and the screen came up, showing what I imagine was a depth map)
sh-3.2# ./Sample-PointServer
usage: ./Sample-PointServer section_name
(... I’ll have to go back to the docs and find out what a section name
is)
sh-3.2# ./Sample-PointViewer
Setting resolution to VGA
Warning: USB events thread - failed to set priority. This might cause
loss of data...
(... and the screen came up)
sh-3.2# ./Sample-SingleControl
Setting resolution to VGA
Warning: USB events thread - failed to set priority. This might cause
loss of data...
Please perform focus gesture to start session
Hit any key to exit
(... will have to look at docs to see what this is supposed to do)
sh-3.2# ./Sample-TrackPad
Setting resolution to VGA
Warning: USB events thread - failed to set priority. This might cause
loss of data...
(... got a black screen, can’t tell what it’s supposed to do, but at
least something came up)
Although I did build OpenNI from source, and that’s what I’m running,
I also downloaded the binary OpenNI-Bin-MacOSX-v1.0.0.25. Here are
the results of running those samples:
sh-3.2# pwd
/Users/poirotsj/Dropbox/Documents/Development/OpenNI/OpenNI-Bin-MacOSX-
v1.0.0.25/Samples/Bin/Release
sh-3.2# ./Sample-NiAudioSample
Warning: USB events thread - failed to set priority. This might cause
loss of data...
No audio node was found!
(... don’t know why this is, since the ros driver’s README says that
audio is supported.)
sh-3.2# ./Sample-NiCRead
Init context failed: File not found!
(... hmm)
sh-3.2# ./Sample-NiSimpleViewer
Warning: USB events thread - failed to set priority. This might cause
loss of data...
(... full screen image came up)
sh-3.2# ./Sample-NiUserTracker
Warning: USB events thread - failed to set priority. This might cause
loss of data...
(... screen came up with image)
sh-3.2# ./NiViewer
Warning: USB events thread - failed to set priority. This might cause
loss of data...
(... screen came up with two-tone image on left, color image on right,
bottom half of screen black)
sh-3.2# ./Sample-NiBackRecorder time 10 depth vga verbose
170 [INFO] OpenNI version is 1.0.0 (Build 25)-MacOSX (Jan 15 2011
14:40:07)
502 [VERBOSE] Checking /usr/lib/libnimMockNodes.dylib...
869 [VERBOSE] Found exported production node. Device: OpenNI/Mock/
1.0.0.25
892 [VERBOSE] Found exported production node. Depth: OpenNI/Mock/
(.... very long ....)
^C