I successfully builded this sample. And it works fine on API >=21. Then this solution was embedded in my project. I replaced all neccessary methods in dji_video_jni.c with my packages. And my project working fine on API >= 21. When I trying to run it on my phone with Android API level 19, then i getting the following error:
FATAL EXCEPTION: main
Process: uiip.dji.pcapi.com, PID: 8922
java.lang.UnsatisfiedLinkError: dlopen failed: cannot locate symbol "atof" referenced by "libffmpeg.so"...
at java.lang.Runtime.loadLibrary(Runtime.java:364)
at java.lang.System.loadLibrary(System.java:526)
at uiip.dji.pcapi.com.media.NativeHelper.<clinit>(NativeHelper.java:65)
at uiip.dji.pcapi.com.MainActivity.onCreate(MainActivity.java:21)
at android.app.Activity.performCreate(Activity.java:5275)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2166)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2252)
at android.app.ActivityThread.access$800(ActivityThread.java:139)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1200)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5103)
at java.lang.reflect.Method.invokeNative(Native Method)
Foremost, I tried to set targetSdkVersion to 19 in Build.Gradle (Module: app) and add the line APP_PLATFORM := android-19 in libs/Application.mk and rebuild jni libs. But this didn't help.
Then I found this post. And decided to try to change compileSdkVersion to 19, I deleted all api-specific stuff as styles appCompat and also I made the method decodeFrame() in DJIVideoStreamDecoder empty (just as mock), because it contains method mediacodec.reset(), which is 21 level api. So it didn't help too.
Then I tried to compile with different older ndk versions (9b, 10e, 11c), and different Android Plugin Version (2.1.3). It didn't help.
Is it problem in libffmpeg.so? How should i deal with it?
pisarik
commented
7 years ago
Hello!
I successfully builded this sample. And it works fine on API >=21. Then this solution was embedded in my project. I replaced all neccessary methods in
dji_video_jni.cwith my packages. And my project working fine on API >= 21. When I trying to run it on my phone with Android API level 19, then i getting the following error:Foremost, I tried to set
targetSdkVersionto 19 inBuild.Gradle (Module: app)and add the lineAPP_PLATFORM := android-19inlibs/Application.mkand rebuild jni libs. But this didn't help.Then I found this post. And decided to try to change
compileSdkVersionto 19, I deleted all api-specific stuff as stylesappCompatand also I made the methoddecodeFrame()inDJIVideoStreamDecoderempty (just as mock), because it contains methodmediacodec.reset(), which is 21 level api. So it didn't help too.Then I tried to compile with different older ndk versions (9b, 10e, 11c), and different Android Plugin Version (2.1.3). It didn't help.
Is it problem in libffmpeg.so? How should i deal with it?