Can't open on Raspberry Pi install of UGS

[BMX1253]

I was able to install the plugin file on my Windows laptop, and was able to use the USB webcam.

When I installed the nbm file on my Raspberry Pi that I have at my CNC Router, I was not able to get the Camera plugin to load into the main UGS screen. I was able to see the camera plugin on the plugin slide out under the Window dropdown tab. But after I selected it, nothing showed in the main screen and when I went back to try again, it was like the Camea plugin was already selected.

This plug in could be super useful for supervising my router while I am not in the garage going deaf next to the router. HAHA

Thanks for all the work you put in!

[pelrun]

So I used sarxos/webcam-capture to handle cross-platform camera access, and it has a current issue with RPi, that at a minimum will require me to rebuild the npm to resolve. Unfortunately that's a bit of an undertaking and I keep forgetting about it, but you're not the first to ask. I'll try harder to make the time.

[pdelorme]

Did you get a chance to work on it? It's a pitty that your camera plug in doesn't work on rpi. That would be great... Thanks.

[pelrun]

I set up github to build it a couple of weeks ago, although I personally haven't tested the result. It's got the latest versions of the dependencies, so I'm hoping it'll work better on the Pi: https://github.com/pelrun/ugs-platform-plugin-camera/releases/tag/v1.2

[pdelorme]

Hi. I actually just compiled and check your new version with the latest dependencies and it still doesn't work on my rpi3/raspian. nothing is displayed when going to /windows/plugin/camera. anyway to have some logs so I can investigate ?

[pelrun]

The relevant information is probably here: https://github.com/sarxos/webcam-capture/wiki/How-To-Configure-Raspberry-Pi

[pdelorme]

thnx, i'll have a look tonight and let you know.

[pdelorme]

I did try adding all the recommanded libraries and added the folowing code

    static {
        Webcam.setDriver(new V4l4jDriver()); // this is important
    }

but what ever I do I keep having the following error in the logs :

SEVERE [global]
java.lang.UnsatisfiedLinkError: /tmp/libs4186288210078880747/libvideo.so: libjpeg.so.8: Ne peut ouvrir le fichier d'objet partag▒: Aucun fichier ou dossier de ce type
        at java.lang.ClassLoader$NativeLibrary.load(Native Method)
        at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1934)
        at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1850)
        at java.lang.Runtime.loadLibrary0(Runtime.java:871)
        at java.lang.System.loadLibrary(System.java:1124)
        at com.github.sarxos.v4l4j.NativeUtils.loadLibraryFromJar(NativeUtils.java:98)
        at com.github.sarxos.v4l4j.V4L4J.init(V4L4J.java:50)
        at com.github.sarxos.webcam.ds.v4l4j.V4l4jDriver.<clinit>(V4l4jDriver.java:33)
        at net.pelrun.ugs.nbm.cameraTopComponent.<clinit>(cameraTopComponent.java:153)
        ...

[pelrun]

Sounds like you just need to install libjpeg8. sudo apt install libjpeg8 perhaps?

[pdelorme]

didn't find where to get libjpeg8 for raspbian.
installed libjpeg9
updated dependencies to latest version.
still same error.

sudo apt-get install libjpeg8
>> cannot find packet libjpeg8
sudo apt-get install libjpeg9
>> installing ok.

[pelrun]

Wow, there's a real mess there. In short, I think the package you want is libjpeg-turbo, which apparently provides libjpeg8 support. I'm not in a position to test it atm. libjpeg9 is mostly useless and you may as well get rid of it.

[pdelorme]

this is the libjpeg packages I have available :

sudo apt search libjpeg
En train de trier... Fait
Recherche en texte int▒gral... Fait
gem-plugin-jpeg/stable 1:0.94-3 armhf
  Graphics Environment for Multimedia - JPEG support

guetzli/stable 1.0.1-1 armhf
  perceptual JPEG encoder

imgsizer/stable 2.10-0.1 all
  Adds WIDTH and HEIGHT attributes to IMG tags in HTML files

jp2a/stable 1.1.0-1 armhf
  converts jpg and png images to ascii

libjpeg-dev/stable 1:2.0.6-4 armhf
  Development files for the JPEG library [dummy package]

libjpeg-progs/stable 1:9b-1 armhf
  Programs for manipulating JPEG files

libjpeg-tools/stable 0.0~git20210129.91985dc-1 armhf
  Complete implementation of 10918-1 (JPEG)

libjpeg-turbo-progs/stable,now 1:2.0.6-4 armhf  [install▒]
  Programs for manipulating JPEG files

libjpeg62-turbo/stable,now 1:2.0.6-4 armhf  [install▒]
  libjpeg-turbo JPEG runtime library

libjpeg62-turbo-dev/stable,now 1:2.0.6-4 armhf  [install▒]
  Development files for the libjpeg-turbo JPEG library

libjpeg7/stable 7-2 armhf
  The Independent JPEG Group's JPEG runtime library (v7)

libjpeg7-dbg/stable 7-2 armhf
  Debugging files for the IJG JPEG library (v7)

libjpeg9/stable 1:9b-1 armhf
  Independent JPEG Group's JPEG runtime library

libjpeg9-dbg/stable 1:9b-1 armhf
  Development files for the IJG JPEG library

libjpeg9-dev/stable 1:9b-1 armhf
  Development files for the IJG JPEG library

libturbojpeg0/stable,now 1:2.0.6-4 armhf  [install▒, automatique]
  TurboJPEG runtime library - SIMD optimized

libturbojpeg0-dev/stable 1:2.0.6-4 armhf
  Development files for the TurboJPEG library

I did try with with libjpeg-turbo-progs, libjpeg62-turbo, libjpeg62-turbo-dev and libjped-tools.
I still have the same error java.lang.UnsatisfiedLinkError: /tmp/libs1908031935922643770/libvideo.so: libjpeg.so.8: Ne peut ouvrir le fichier d'objet partag▒: Aucun fichier ou dossier de ce type when doing Webcam.setDriver(new V4l4jDriver());

an issue on this is open on sarxos/webcam-capture since 2019 with no answer... sarxos/webcam-capture#701

this is not smelling good...

[pdelorme]

previous attemps where on raspbian bullseye.
I did reinstall with "Raspbian buster"
now libjpeg8 is installing ok.
no more libjped.so.8 error.
but : GUI is freezing and i get the folowing logs :

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.

looks like this package is deprecated...