Intel L515 support

[oori]

RealSense: No device found! with the new L515 camera.
Camera does work with realsense-viewer 2.38.1, and this repo uses 2.29. could that be the problem?

BTW, on same setup:
D415 works great.
SR305 also works fine (although fails on pointcloud demo)

[cansik]

Yes, I am currently working on that, but first we have to update the native base libraries: bytedeco/javacpp-presets#946

If you are working on MacOS, you can replace the jars with the following and it should run with the Intel L515: librealsense2-java-2.38.1.zip

[oori]

Thanks a lot.
I do development on MacOS, but eventually (in 3-4 weeks) it needs to runs on Windows 10. I'll track your repo for updates, and will be happy to assist with testing.

[oori]

Tried it on Mac now, I get:

# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x0000000135ad5cd2, pid=41952, tid=0x000000000000f053
#
# JRE version: Java(TM) SE Runtime Environment (8.0_202-b08) (build 1.8.0_202-b08)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.202-b08 mixed mode bsd-amd64 compressed oops)
# Problematic frame:
# C  [librealsense2.2.38.dylib+0x383cd2]  _ZN12librealsense10uvc_sensor4openERKNSt3__16vectorINS1_10shared_ptrINS_24stream_profile_interfaceEEENS1_9allocatorIS5_EEEE+0x334

Full log here: hs_err_pid41952.log

[oori]

Do note, that on realsense-viewer 2.38.1 this L515 crashes the app occasionally. as if bus is overloaded. most commonly, if you try to start the Motion Module (even by itself, without the other modules). So this SIGSEGV reminded me of segmentation fault.

 30/09 22:11:24,928 WARNING [0x7000098c0000] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Operation timed out, number: 60
 30/09 22:11:25,073 WARNING [0x7000098c0000] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Operation timed out, number: 60
[1]    43369 segmentation fault  realsense-viewer

[oori]

Maybe related to this? IntelRealSense/librealsense#6925

Similar here:

realsense-processing/src/main/java/ch/bildspur/realsense/RealSenseCamera.java

Line 450 in 153f2bf

public synchronized void start(String serialNumber) {

[oori]

Yes, I am currently working on that, but first we have to update the native base libraries: bytedeco/javacpp-presets#946

@cansik I see it was merged a couple of days ago. any news about getting this into this library? Thanks.

[cansik]

Thank you, I have already seen it.

1.5.5 is currently snapshot, and because gradle is not great at handling maven snapshot releases, I will wait until javacpp-presets 1.5.5 are officially released. Then it should be a nobrainer, just editing the gradle files of the java warpper and re-building the realsense-processing library.

You could of course do that already now... :) just to have a release for your windows version.

[oori]

Thanks.
I rebuilt librealsense-java with 1.5.5-SNAPSHOT / 2.38.1-1.5.5-SNAPSHOT, but two tests fail.

> Task :test FAILED

org.intel.rs.test.DeviceTest > deviceCountTest FAILED
    org.intel.rs.util.RealSenseException at DeviceTest.java:20
    java.lang.NullPointerException at DeviceTest.java:25

org.intel.rs.test.DeviceTest > setJsonConfigTest FAILED
    org.intel.rs.util.RealSenseException at DeviceTest.java:20
    java.lang.NullPointerException at DeviceTest.java:25

14 tests completed, 2 failed

org.intel.rs.util.RealSenseException: null pointer passed for argument "callback"
	at org.intel.rs.util.RealSenseUtil.checkError(RealSenseUtil.java:13)
	at org.intel.rs.Context.<init>(Context.java:40)
	at org.intel.rs.test.DeviceTest.createContext(DeviceTest.java:20)

I will look into it again later.

@cansik, Do you have an idea/direction regarding the macOS crash with SIGSEGV? see comments above. Thanks again!

[oori]

friendly bump: 2.39.0 is already out for some time

[cansik]

Thanks! If you would like to contribute, you could already bump the javacpp-presets to 2.39.0. I am still waiting for the release of 1.5.5

[cansik]

Intel RealSense 515 is now supported. A prebuilt release should follow today.