webcam-capture
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sarxos
Does not Work on RaspberryPi 4B+. Driver problem or not?
Hi all I am trying to use the WebcamCapture plugin for ImageJ, which is based on the Webcam Capture library.
I am trying to use it on Raspberry Pi 4B+ 4Gb with the Raspberry Pi camera and not with a USB camera connected to the Pi. I have tried on Ubuntu and Rasbian 32, but I get an error on both OS.
Here is the exception that I get running on Ubuntu for Raspberri:
(Fiji Is Just) ImageJ 2.3.0/1.53q; Java 1.8.0_312 [64-bit]; Linux 5.13.0-1008-raspi; 147MB of 400MB (36%)
com.github.sarxos.webcam.WebcamException: java.util.concurrent.ExecutionException: com.github.sarxos.webcam.WebcamException: Cannot execute task
at com.github.sarxos.webcam.WebcamDiscoveryService.getWebcams(WebcamDiscoveryService.java:118)
at com.github.sarxos.webcam.Webcam.getWebcams(Webcam.java:692)
at com.github.sarxos.webcam.Webcam.getDefault(Webcam.java:755)
at com.github.sarxos.webcam.Webcam.getDefault(Webcam.java:732)
at com.github.sarxos.webcam.Webcam.getDefault(Webcam.java:710)
at IJ_webcam_plugin.run(IJ_webcam_plugin.java:63)
at ij.IJ.runUserPlugIn(IJ.java:243)
at ij.IJ.runUserPlugIn(IJ.java:258)
at ij.IJ.runPlugIn(IJ.java:204)
at ij.Executer.runCommand(Executer.java:152)
at ij.Executer.run(Executer.java:70)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.util.concurrent.ExecutionException: com.github.sarxos.webcam.WebcamException: Cannot execute task
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at com.github.sarxos.webcam.WebcamDiscoveryService.getWebcams(WebcamDiscoveryService.java:110)
... 11 more
Caused by: com.github.sarxos.webcam.WebcamException: Cannot execute task
at com.github.sarxos.webcam.WebcamProcessor$AtomicProcessor.process(WebcamProcessor.java:57)
at com.github.sarxos.webcam.WebcamProcessor.process(WebcamProcessor.java:120)
at com.github.sarxos.webcam.WebcamTask.process(WebcamTask.java:35)
at com.github.sarxos.webcam.ds.buildin.WebcamDefaultDriver$WebcamNewGrabberTask.newGrabber(WebcamDefaultDriver.java:46)
at com.github.sarxos.webcam.ds.buildin.WebcamDefaultDriver.getDevices(WebcamDefaultDriver.java:118)
at com.github.sarxos.webcam.WebcamDiscoveryService$WebcamsDiscovery.call(WebcamDiscoveryService.java:35)
at com.github.sarxos.webcam.WebcamDiscoveryService$WebcamsDiscovery.call(WebcamDiscoveryService.java:25)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
... 1 more
Caused by: java.lang.UnsatisfiedLinkError: org.bridj.Platform.sizeOf_ptrdiff_t()I
at org.bridj.Platform.sizeOf_ptrdiff_t(Native Method)
at org.bridj.Platform.
My question is, is this still the problem with the driver (as explained here) or not? Under readme is written that if I want to run it on the Raspberry, I need to replace version 0.6.2 of BridJ JAR by the 0.6.3-SNAPSHOT or newer bridj-0.7-20140918. So I have done this, but I still have the error.
Here is another driver that can be used for the Raspberry.
So did someone lately succeed in running it on the Raspberry?
As I do not have knowledge in Java, I am not sure how I can change the drivers in the plugin WebcamCapture for ImageJ, and I am not sure if this is the solution to my problem.
Here is the error that I get in the ImageJ software:
I really appreciate any help you can provide. Best regards Georgi
From what I'm seeing at a glance... You're trying to load 64 bit webcam-capture on a 32 bit OS. I'm not familiar with Raspberry Pi CPU architecture unfortunately.
To my knowledge, this has always been troublesome on Raspberry Pi and MacOS.
Note that this library is designed to get images from USB and IP cameras.
