Unsatisfied link error

[abhilashi]

The default "libpeople_det.so" included in the repo works. But when I build it locally on my machine I end up with UnsatisfiedLinkError.

OS: mac OS sierra
ndk version: android-ndk-r12b

10-21 17:28:33.561 25557-25679/com.tzutalin.dlibtest E/art: No implementation found for void com.tzutalin.dlibtest.ImageUtils.convertYUV420ToARGB8888(byte[], byte[], byte[], int[], int, int, int, int, int, boolean) (tried Java_com_tzutalin_dlibtest_ImageUtils_convertYUV420ToARGB8888 and Java_com_tzutalin_dlibtest_ImageUtils_convertYUV420ToARGB8888___3B_3B_3B_3IIIIIIZ)
10-21 17:28:33.571 25557-25679/com.tzutalin.dlibtest E/AndroidRuntime: FATAL EXCEPTION: ImageListener
                                                                       Process: com.tzutalin.dlibtest, PID: 25557
                                                                       java.lang.UnsatisfiedLinkError: No implementation found for void com.tzutalin.dlibtest.ImageUtils.convertYUV420ToARGB8888(byte[], byte[], byte[], int[], int, int, int, int, int, boolean) (tried Java_com_tzutalin_dlibtest_ImageUtils_convertYUV420ToARGB8888 and Java_com_tzutalin_dlibtest_ImageUtils_convertYUV420ToARGB8888___3B_3B_3B_3IIIIIIZ)
                                                                           at com.tzutalin.dlibtest.ImageUtils.convertYUV420ToARGB8888(Native Method)
                                                                           at com.tzutalin.dlibtest.OnGetImageListener.onImageAvailable(OnGetImageListener.java:193)
                                                                           at android.media.ImageReader$ListenerHandler.handleMessage(ImageReader.java:648)
                                                                           at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                           at android.os.Looper.loop(Looper.java:148)
                                                                           at android.os.HandlerThread.run(HandlerThread.java:61)

Another log:

10-21 18:33:59.178 20989-21373/com.tzutalin.dlibtest E/art: No implementation found for int com.tzutalin.dlib.PeopleDet.jniOpencvHOGDetect(java.lang.String) (tried Java_com_tzutalin_dlib_PeopleDet_jniOpencvHOGDetect and Java_com_tzutalin_dlib_PeopleDet_jniOpencvHOGDetect__Ljava_lang_String_2)
10-21 18:33:59.183 20989-21373/com.tzutalin.dlibtest E/AndroidRuntime: FATAL EXCEPTION: pool-1-thread-1
                                                                       Process: com.tzutalin.dlibtest, PID: 20989
                                                                       java.lang.UnsatisfiedLinkError: No implementation found for int com.tzutalin.dlib.PeopleDet.jniOpencvHOGDetect(java.lang.String) (tried Java_com_tzutalin_dlib_PeopleDet_jniOpencvHOGDetect and Java_com_tzutalin_dlib_PeopleDet_jniOpencvHOGDetect__Ljava_lang_String_2)
                                                                           at com.tzutalin.dlib.PeopleDet.jniOpencvHOGDetect(Native Method)
                                                                           at com.tzutalin.dlib.PeopleDet.detPerson(PeopleDet.java:56)
                                                                           at com.tzutalin.dlibtest.MainActivity.runDetectAsync(MainActivity.java:236)
                                                                           at com.tzutalin.dlibtest.MainActivity_.access$301(MainActivity_.java:32)
                                                                           at com.tzutalin.dlibtest.MainActivity_$6.execute(MainActivity_.java:156)
                                                                           at org.androidannotations.api.BackgroundExecutor$Task.run(BackgroundExecutor.java:405)
                                                                           at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:423)
                                                                           at java.util.concurrent.FutureTask.run(FutureTask.java:237)
                                                                           at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:269)
                                                                           at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
                                                                           at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
                                                                           at java.lang.Thread.run(Thread.java:818)

Steps to reproduce:

• git clone --recursive https://github.com/tzutalin/dlib-android.git
• cd dlib-android
• ./envsetup
• ndk-build -j 2
• cp -r libs/* dlib-android-app/dlib/src/main/jniLibs
• Build apk. Fire camera on the phone.

Any pointers on where I should look next? ( I haven't changed anything in the repo. Just ran an ndk-build after cloning the repo.)

[tzutalin]

Hi,
Do you use the latest version? Could you try to call ./envsetup and build again?

I think the root cause is that I forget to sync the submodule, dlib-android-app.

[abhilashi]

@tzutalin I just tried with the latest by doing the following:

git pull
./envsetup

It is still the same. Anything else I could try?

[abhilashi]

I just peeked into the symbols. These methods indeed exist in the file: "libpeople_det.so".

saadhana@Abhilashs-MacBook-Air-4 ~/dlib-android(master) $ ~/Downloads/android-ndk-r13/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64/bin/arm-linux-androideabi-readelf -Ws dlib-android-app/dlib/src/main/jniLibs/armeabi-v7a/libpeople_det.so  | awk '{print $8}' | grep "Java_com_tzutalin"
Java_com_tzutalin_dlib_PeopleDet_jniNativeClassInit
Java_com_tzutalin_dlib_PeopleDet_jniOpencvHOGDetect
Java_com_tzutalin_dlib_PeopleDet_jniGetOpecvHOGRet
Java_com_tzutalin_dlib_PeopleDet_jniDLibHOGDetect
Java_com_tzutalin_dlib_PeopleDet_jniGetDLibHOGRet
Java_com_tzutalin_dlib_PeopleDet_jniDLibHOGFaceDetect
Java_com_tzutalin_dlib_PeopleDet_jniBitmapFaceDect
Java_com_tzutalin_dlib_PeopleDet_jniGetDLibHOGFaceRet
Java_com_tzutalin_dlib_PeopleDet_jniInit
Java_com_tzutalin_dlib_PeopleDet_jniDeInit
Java_com_tzutalin_dlib_FaceDet_jniNativeClassInit
Java_com_tzutalin_dlib_FaceDet_jniFaceLandmarkDet
Java_com_tzutalin_dlib_FaceDet_jniBitmapFaceLandmarkDet
Java_com_tzutalin_dlib_FaceDet_jniFaceDet
Java_com_tzutalin_dlib_FaceDet_jniBitmapFaceDet
Java_com_tzutalin_dlib_FaceDet_jniInit
Java_com_tzutalin_dlib_FaceDet_jniDeInit
Java_com_tzutalin_dlibtest_ImageUtils_convertYUV420SPToARGB8888
Java_com_tzutalin_dlibtest_ImageUtils_convertYUV420ToARGB8888
Java_com_tzutalin_dlibtest_ImageUtils_convertYUV420SPToRGB565
Java_com_tzutalin_dlibtest_ImageUtils_convertARGB8888ToYUV420SP
Java_com_tzutalin_dlibtest_ImageUtils_convertRGB565ToYUV420SP
saadhana@Abhilashs-MacBook-Air-4 ~/dlib-android(master) $ 

I went back the dlib-android-app and I found the issue to be the following.

10-21 23:58:22.571 26250-26883/com.tzutalin.dlibtest D/PeopleDet: library not found!

This is happening only when I build it locally :(

[abhilashi]

This seems related: http://stackoverflow.com/questions/39541599/error-loading-package-jni-cannot-locate-symbol-aeabi-memcpy and this android/ndk#126

[abhilashi]

In our case both compileSdkVersion and targetSdkVersion are same. Even my device is Android 6 (23).

It worked when I changed APP_PLATFORM parameter.

My Application.mk looks like this:

 NDK_TOOLCHAIN_VERSION := clang
 APP_ABI := armeabi-v7a arm64-v8a x86 x86_64
 APP_CPPFLAGS := -std=c++11 -frtti -fexceptions
 APP_PLATFORM := android-21
 APP_STL := gnustl_static

Yet to figure out why this worked :)

[tzutalin]

@abhilashi ,
Good.

[Jiradet-M]

I find error
2021-01-07 16:27:48.736 8919-8966/com.example.adasplus E/xample.adasplu: No implementation found for void com.example.adasplus.ImageUtils.convertYUV420ToARGB8888(byte[], byte[], byte[], int[], int, int, int, int, int, boolean) (tried Java_com_example_adasplus_ImageUtils_convertYUV420ToARGB8888 and Java_com_example_adasplus_ImageUtils_convertYUV420ToARGB8888___3B_3B_3B_3IIIIIIZ)
2021-01-07 16:27:48.739 8919-8966/com.example.adasplus E/AndroidRuntime: FATAL EXCEPTION: ImageListener
Process: com.example.adasplus, PID: 8919
java.lang.UnsatisfiedLinkError: No implementation found for void com.example.adasplus.ImageUtils.convertYUV420ToARGB8888(byte[], byte[], byte[], int[], int, int, int, int, int, boolean) (tried Java_com_example_adasplus_ImageUtils_convertYUV420ToARGB8888 and Java_com_example_adasplus_ImageUtils_convertYUV420ToARGB8888___3B_3B_3B_3IIIIIIZ)
at com.example.adasplus.ImageUtils.convertYUV420ToARGB8888(Native Method)
at com.example.adasplus.OnGetImageListener.onImageAvailable(OnGetImageListener.java:210)
at android.media.ImageReader$ListenerHandler.handleMessage(ImageReader.java:800)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:201)
at android.os.HandlerThread.run(HandlerThread.java:65)
2021-01-07 16:27:48.773 8919-8919/com.example.adasplus V/CameraConnectionFragment: ⇢ closeCamera()
2021-01-07 16:27:50.127 8919-8919/com.example.adasplus W/Binder:8919_1: type=1400 audit(0.0:122794): avc: denied { read } for name="u:object_r:vendor_camera_prop:s0" dev="tmpfs" ino=21066 scontext=u:r:untrusted_app:s0:c179,c256,c512,c768 tcontext=u:object_r:vendor_camera_prop:s0 tclass=file permissive=0
2021-01-07 16:27:50.135 8919-8933/com.example.adasplus E/libc: Access denied finding property "vendor.camera.aux.packagelist"
2021-01-07 16:27:50.135 8919-8933/com.example.adasplus E/libc: Access denied finding property "vendor.camera.aux.packagelist.ext"
2021-01-07 16:27:50.139 8919-8919/com.example.adasplus I/native: I/jni_face_det.cpp:153 jniDeInit
2021-01-07 16:27:50.139 8919-9025/com.example.adasplus W/xample.adasplu: Long monitor contention with owner main (8919) at boolean android.os.BinderProxy.transactNative(int, android.os.Parcel, android.os.Parcel, int)(BinderProxy.java:-2) waiters=0 in void android.hardware.camera2.impl.CameraDeviceImpl$CameraDeviceCallbacks.onCaptureStarted(android.hardware.camera2.impl.CaptureResultExtras, long) for 1.329s
2021-01-07 16:27:50.168 8919-8919/com.example.adasplus V/CameraConnectionFragment: ⇠ closeCamera [1394ms]
2021-01-07 16:27:50.168 8919-8919/com.example.adasplus V/CameraConnectionFragment: ⇢ stopBackgroundThread()

i set dlib in new project