Compiling both JavaCV and FFmpegMediaMetadataRetriever

[bibounet]

hello,
I'm trying to use FFmpegMediaMetadataRetriever lib to get frames at precise position,
Once I add this lib to gradle, I need to add multiple 'pickFirst' to allow compilation.
this works, but now getting an error at runtime :

java.lang.UnsatisfiedLinkError: [...] couldn't find "libjniopencv_core.so"

gradle conf

    packagingOptions {
        pickFirst 'org/bytedeco/javacpp/macosx-x86_64/libusb-1.0.dylib'
        pickFirst 'lib/x86/libavcodec.so'
        pickFirst 'lib/x86/libavformat.so'
        pickFirst 'lib/x86/libavutil.so'
        pickFirst 'lib/x86/libswscale.so'
        pickFirst 'lib/armeabi/libavcodec.so'
        pickFirst 'lib/armeabi/libavformat.so'
        pickFirst 'lib/armeabi/libavutil.so'
        pickFirst 'lib/armeabi/libswscale.so'
        exclude 'META-INF/services/javax.annotation.processing.Processor'
        pickFirst 'META-INF/maven/org.bytedeco.javacpp-presets/opencv/pom.properties'
        pickFirst 'META-INF/maven/org.bytedeco.javacpp-presets/opencv/pom.xml'
        pickFirst 'META-INF/maven/org.bytedeco.javacpp-presets/ffmpeg/pom.properties'
        pickFirst 'META-INF/maven/org.bytedeco.javacpp-presets/ffmpeg/pom.xml'
    }

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })

    compile group: 'org.bytedeco', name: 'javacv-platform', version: '1.3.3'
    compile group: 'org.bytedeco.javacpp-presets', name: 'opencv', version: '2.4.11-0.11', classifier: 'android-arm'
    compile group: 'org.bytedeco.javacpp-presets', name: 'opencv', version: '2.4.11-0.11', classifier: 'android-x86'
    compile group: 'org.bytedeco.javacpp-presets', name: 'ffmpeg', version: '2.6.1-0.11', classifier: 'android-arm'
    compile group: 'org.bytedeco.javacpp-presets', name: 'ffmpeg', version: '2.6.1-0.11', classifier: 'android-x86'

    compile 'com.github.wseemann:FFmpegMediaMetadataRetriever:1.0.14'

    compile 'com.android.support:appcompat-v7:25.3.0'
    compile 'com.android.support:design:25.3.0'
    compile 'com.android.support.constraint:constraint-layout:1.0.2'
    testCompile 'junit:junit:4.12'
}

if someone can help me, it will be the greatest day of my life :)

[saudet]

The error message is clear: You need to add the libjniopencv_core.so file.

[bibounet]

Hello, thank you for your answer.

I added libjniopencv_core.so file (from .gradle[...].javacpp-presets\opencv[...]\opencv-3.2.0-1.3-android-x86.jar)** to

• app\src\main\jniLibs\x86
• app\src\main\jniLibs\armeabi

then compiling *.so in build gradle :
compile fileTree(dir: 'libs', include: ['*.jar', **'*.so'**])

but it's still missing... (even if I build a lib.jar file, into a lib or libs folder)

thank you for your support...

[saudet]

Really? Does it get removed if you add it to armeabi-v7a instead?

[bibounet]

unfortunately yes :(

08-07 14:31:43.624 26721-26721/com.toto.optimon E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.toto.optimon, PID: 26721
java.lang.UnsatisfiedLinkError: dlopen failed: "/data/app/com.toto.optimon-2/lib/arm/libjniopencv_core.so" has unexpected e_machine: 3
at java.lang.Runtime.loadLibrary(Runtime.java:372)
at java.lang.System.loadLibrary(System.java:1076)
at org.bytedeco.javacpp.Loader.loadLibrary(Loader.java:976)
at org.bytedeco.javacpp.Loader.load(Loader.java:777)
at org.bytedeco.javacpp.Loader.load(Loader.java:684)
at org.bytedeco.javacpp.opencv_core.(opencv_core.java:10)
at java.lang.Class.classForName(Native Method)
at java.lang.Class.forName(Class.java:324)
at org.bytedeco.javacpp.Loader.load(Loader.java:739)
at org.bytedeco.javacpp.Loader.load(Loader.java:684)
....
Caused by: java.lang.UnsatisfiedLinkError: dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/com.toto.optimon-2/base.apk", zip file "/data/app/com.toto.optimon-2/split_lib_dependencies_apk.apk", zip file "/data/app/com.toto.optimon-2/split_lib_slice_0_apk.apk", zip file "/data/app/com.toto.optimon-2/split_lib_slice_1_apk.apk", zip file "/data/app/com.toto.optimon-2/split_lib_slice_2_apk.apk", zip file "/data/app/com.toto.optimon-2/split_lib_slice_3_apk.apk", zip file "/data/app/com.toto.optimon-2/split_lib_slice_4_apk.apk", zip file "/data/app/com.toto.optimon-2/split_lib_slice_5_apk.apk", zip file "/data/app/com.toto.optimon-2/split_lib_slice_6_apk.apk", zip file "/data/app/com.toto.optimon-2/split_lib_slice_7_apk.apk", zip file "/data/app/com.toto.optimon-2/split_lib_slice_8_apk.apk", zip file "/data/app/com.toto.optimon-2/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.toto.optimon-2/lib/arm, /data/app/com.toto.optimon-2/base.apk!/lib/armeabi-v7a, /data/app/com.toto.optimon-2/split_lib_dependencies_apk.apk!/lib/armeabi-v7a, /data/app/com.toto.optimon-2/split_lib_slice_0_apk.apk!/lib/armeabi-v7a, /data/app/com.toto.optimon-2/split_lib_slice_1_apk.apk!/lib/armeabi-v7a, /data/app/com.toto.optimon-2/split_lib_slice_2_apk.apk!/lib/armeabi-v7a, /data/app/com.toto.optimon-2/split_lib_slice_3_apk.apk!/lib/armeabi-v7a, /data/app/com.toto.optimon-2/split_lib_slice_4_apk.apk!/lib/armeabi-v7a, /data/app/com.toto.optimon-2/split_lib_slice_5_apk.apk!/lib/armeabi-v7a, /data/app/com.toto.optimon-2/split_lib_slice_6_apk.apk!/lib/armeabi-v7a, /data/app/com.toto.optimon-2/split_lib_slice_7_apk.apk!/lib/armeabi-v7a, /data/app/com.toto.optimon-2/split_lib_slice_8_apk.apk!/

[saudet]

Well, this is an Android problem, but please let us know if you figure it out.

[saudet]

Also, these kinds of issues are usually fixed by ReLinker, so make sure to use that:
https://github.com/bytedeco/javacpp-presets/wiki/The-UnsatisfiedLinkError-X-File-%28a-real-experience%29

[bibounet]

It was my mistake sorry, I was extracting opencv-3.2.0-1.3-android-x86.jar and not opencv-3.2.0-1.3-android-arm.jar to app/src/main/jniLibs/{arm, armeabi, armeabi-v7a}

So now it works!
Thanks again for your help