dcm2jpg not working on MacOS M1

[LetsMelon]

dcm2jpg can't download libopencv_java.jnilib on MacOS aarch64.

To Reproduce
Steps to reproduce the behavior:

1. Use a M1-Chip (M1, M1 Pro or M1 Max)
2. Download and install dcm4che3 toolset from sourceforge
3. Execute dcm2jpg (eg.: dcm2jpg --help)
4. See error message

Expected behavior
Terminal output:

$ dcm2jpg --help
/dcm4che/lib/macosx-aarch64/libopencv_java.jnilib is missing. 
Try to download https://github.com/nroduit/mvn-repo/raw/master/org/weasis/thirdparty/org/opencv/libopencv_java/4.5.3-dcm/libopencv_java-4.5.3-dcm-macosx-aarch64.jnilib
--2021-12-19 11:41:13--  https://github.com/nroduit/mvn-repo/raw/master/org/weasis/thirdparty/org/opencv/libopencv_java/4.5.3-dcm/libopencv_java-4.5.3-dcm-macosx-aarch64.jnilib
404 Not Found

Cannot download the native library related to the architecture macosx-aarch64, try it manually

Desktop

• OS: MacOs
• Prozesor: M1 Pro
• Version: 5.25.0

Additional context
opencv/libopencv_java/4.5.3-dcm

[nroduit]

Unfortunately, there is no way to automate the build without having Mac OS + hardware. I'm waiting for a solution from Github because for the moment I have neither hardware M1 nor the will to deal with this build manually.

However I guess it is possible to use a version of Java x86 with Rosetta.

[LetsMelon]

I tried to use the version for mac os x86 (libopencv_java-4.5.3-dcm-macosx-x86-64.jnilib) but then I have an java.lang.UnsatisfiedLinkError-Error.

Native OpenCV library has been found in /dcm4che/lib/macosx-aarch64/libopencv_java.jnilib
11:49:27,386 DEBUG - Decompressor: org.dcm4che3.opencv.NativeImageReader
11:49:27,387 DEBUG - Start decompressing frame #1
Exception in thread "main" java.lang.UnsatisfiedLinkError: /dcm4che/lib/macosx-aarch64/libopencv_java.jnilib: dlopen(/dcm4che/lib/macosx-aarch64/libopencv_java.jnilib, 0x0001): tried: '/dcm4che/lib/macosx-aarch64/libopencv_java.jnilib' (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64e')), '/usr/lib/libopencv_java.jnilib' (no such file)
	at java.base/jdk.internal.loader.NativeLibraries.load(Native Method)
	at java.base/jdk.internal.loader.NativeLibraries$NativeLibraryImpl.open(NativeLibraries.java:384)
	at java.base/jdk.internal.loader.NativeLibraries.loadLibrary(NativeLibraries.java:228)
	at java.base/jdk.internal.loader.NativeLibraries.loadLibrary(NativeLibraries.java:170)
	at java.base/jdk.internal.loader.NativeLibraries.findFromPaths(NativeLibraries.java:317)
	at java.base/jdk.internal.loader.NativeLibraries.loadLibrary(NativeLibraries.java:283)
	at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2422)
	at java.base/java.lang.Runtime.loadLibrary0(Runtime.java:818)
	at java.base/java.lang.System.loadLibrary(System.java:1989)
	at org.opencv.osgi.OpenCVNativeLoader.init(OpenCVNativeLoader.java:17)
	at org.dcm4che3.opencv.StreamSegment.<clinit>(StreamSegment.java:76)
	at org.dcm4che3.opencv.NativeImageReader.getNativeImage(NativeImageReader.java:260)
	at org.dcm4che3.opencv.NativeImageReader.read(NativeImageReader.java:251)
	at org.dcm4che3.imageio.plugins.dcm.DicomImageReader.read(DicomImageReader.java:458)
	at org.dcm4che3.tool.dcm2jpg.Dcm2Jpg.readImageFromDicomInputStream(Dcm2Jpg.java:438)
	at org.dcm4che3.tool.dcm2jpg.Dcm2Jpg.convert(Dcm2Jpg.java:425)
	at org.dcm4che3.tool.dcm2jpg.Dcm2Jpg.mconvert(Dcm2Jpg.java:412)
	at org.dcm4che3.tool.dcm2jpg.Dcm2Jpg.main(Dcm2Jpg.java:381)

[LetsMelon]

Unfortunately, there is no way to automate the build without having Mac OS + hardware. I'm waiting for a solution from Github because for the moment I have neither hardware M1 nor the will to deal with this build manually.

How can I build them myself?

[nroduit]

I meant using a JDK with an x86 architecture with export JAVA_HOME=jdk-path

The sources of this library are not yet publicly distributed.

[LetsMelon]

When I change JAVA_HOME to a java mac os jdk (openjdk17.0.1)

I have this error:

/dcm4che/bin/dcm2jpg: line 59: /jdk-17.0.1.jdk/bin/java: No such file or directory
/dcm4che/lib//libopencv_java.so is missing. 
Try to download https://github.com/nroduit/mvn-repo/raw/master/org/weasis/thirdparty/org/opencv/libopencv_java/4.5.3-dcm/libopencv_java-4.5.3-dcm-.so
--2021-12-20 12:22:59--  https://github.com/nroduit/mvn-repo/raw/master/org/weasis/thirdparty/org/opencv/libopencv_java/4.5.3-dcm/libopencv_java-4.5.3-dcm-.so
404: Not Found.

Cannot download the native library related to the architecture , try it manually.

[nroduit]

I will be testing this soon as I am not familiar with how Rosetta works.

I need a little more time to prepare a compiled version under M1. I will post here as soon as I have something.

[LetsMelon]

Ok thanks!

[nroduit]

I just checked with openjdk 17-x86 and it works. You need to open a terminal with option "Rosetta", see https://www.courier.com/blog/tips-and-tricks-to-setup-your-apple-m1-for-development/

Another issue, the native lib is not signed in this dcm4che package, so you need to deactivate gatekeeper temporarly.