UnsatisfiedLinkError

[nsputnik]

With the xtra_video.pde example script I am getting an error "UnsatisfiedLinkError: no opencv_java245 in java.library.path" and then it lists the path to Processing.app/Contents/Java/core/library/macos-x86_64 and paths at documents/Processing/libraries to minim, video, and opencv_processing library directories. Running Mac OSX 10.14 Intel, getting the same error on 12.3 Apple Silicone.

[ffd8]

@nsputnik I did some research on this, since it seems to be an issue with the 'OpenCV for Processing' and MacOS's new 64bit requirement and found this discussion on the opencv lib which points to this solution from the processing forum.
Let me know if that solves it (also in one or both setups).

EDIT: just saw you also posted on the repo issues above.. hmm will also check getting it working on my new setup (apple silicon + 12.5)

[ffd8]

@nsputnik found a solution for my setup (MBP M1+, 12.5.x)

• (download processing 4.0.1 MacOs (Intel 64-bit))
• open once (need to allow macos security warnings)
• quit
• manually install @jaegonlee opencv for processing update for 4.0
• CTRL + Click Processing app and 'Show package contents'
• browse to: Contents / Java / core / library / macos-x86_64
• copy into this dir the libopencv_java400.dylib file that came with @jaegonlee update for 4.0, as suggested by @kkirklewski on the forum
• reopen Processing and test an example for OpenCV

This worked fine for me using the Intel x86 build even though I'm on apple silicon. The first time I ran it, it warned that OpenCV isn't made for my hardware or something like that but ran.. now having quit and reopen, no more warning.. just works.

Unfortunately I can't figure out how to get it installed and working on Processing's Apple Silicon release... something I notice deep within Processing's package contents, Contents / Java / core / library / is a folder called macos-aarch64 (obviously for apple silicon ref), however the OpenCV lib doesn't have that folder.. only one called 'macosx64'.. tried manually created a folder to match the style for aarch but can't get it to find the link.. will make a post on the opencv issue to see if someone has given it a try since the stable releases for both hardware.

[nsputnik]

@ffd8 That you so much.
So I opened Processing today and noticed there was an update for opencv-processing. I figured I would try running the update before following all of your instructions and run the script again. It is working! (X68 10.14). I don't know if commenting on the issue in the project prompted this but all seems good now. I'll try on Apple Silicon too and let you know the results. I think for the most part Rosetta 2 should help any X86 code on Apple Silicon, it's just not native code I guess.

[ffd8]

@nsputnik Aha - awesome, also just did the same on latest processing with apple silicon = works just fine!
I see the issue as the latest dev was started in a new repo that wasn't linked to the original. Updating the lib within Processing now links to that new repo and hopefully a note will be added to the original readme pointing folks there.

[ffd8]

FYI, the xtra_video XYscope demo works fine in the x86 environment, but fails on apple silicon due to a gstreamer issue for the video library which is currently being worked on.