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Sur d’autres sites (6403)

  • Android Studio with javaCv and FFMPEG

    19 janvier 2016, par Calvin Moss

    So I am using the new Android Studio and I am trying to get JavaCV installed in the most basic setup. I made a brand new project with nothing in it, imported (I think unsuccessfully) the JavaCV library and then I am running one of the samples given in the JavaCV repo and I am getting the following error.

    Process: com.example.calvintmoss.dejavid, PID: 1187
    
java.lang.UnsatisfiedLinkError: Couldn't load jniopencv_core from loader dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/com.example.calvintmoss.dejavid-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.example.calvintmoss.dejavid-1, /system/lib]]]: findLibrary returned null
    
        at java.lang.Runtime.loadLibrary(Runtime.java:358)
    
        at java.lang.System.loadLibrary(System.java:526)
    
        at org.bytedeco.javacpp.Loader.loadLibrary(Loader.java:535)
    
        at org.bytedeco.javacpp.Loader.load(Loader.java:410)
    
        at org.bytedeco.javacpp.Loader.load(Loader.java:353)
    
        at org.bytedeco.javacpp.opencv_core.<clinit>(opencv_core.java:10)
    
        at org.bytedeco.javacpp.helper.opencv_core$AbstractIplImage.create(opencv_core.java:909)
    
        at com.example.calvintmoss.dejavid.MainActivity.initRecorder(MainActivity.java:249)
    
        at com.example.calvintmoss.dejavid.MainActivity.onCreate(MainActivity.java:151)
    
        at android.app.Activity.performCreate(Activity.java:5231)
    
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
    
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2148)
    
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
    
        at android.app.ActivityThread.access$800(ActivityThread.java:135)
    
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
    
        at android.os.Handler.dispatchMessage(Handler.java:102)
    
        at android.os.Looper.loop(Looper.java:136)
    
        at android.app.ActivityThread.main(ActivityThread.java:5001)
    
        at java.lang.reflect.Method.invokeNative(Native Method)
    
        at java.lang.reflect.Method.invoke(Method.java:515)
    
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
    
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
    
        at dalvik.system.NativeStart.main(Native Method)
    
 Caused by: java.lang.UnsatisfiedLinkError: Couldn't load opencv_core from loader dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/com.example.calvintmoss.dejavid-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.example.calvintmoss.dejavid-1, /system/lib]]]: findLibrary returned null
    
        at java.lang.Runtime.loadLibrary(Runtime.java:358)
    
        at java.lang.System.loadLibrary(System.java:526)
    
        at org.bytedeco.javacpp.Loader.loadLibrary(Loader.java:535)
    
        at org.bytedeco.javacpp.Loader.load(Loader.java:401)
    
            at org.bytedeco.javacpp.Loader.load(Loader.java:353)
    
            at org.bytedeco.javacpp.opencv_core.<clinit>(opencv_core.java:10)
    
            at org.bytedeco.javacpp.helper.opencv_core$AbstractIplImage.create(opencv_core.java:909)
    
            at com.example.calvintmoss.dejavid.MainActivity.initRecorder(MainActivity.java:249)
    
            at com.example.calvintmoss.dejavid.MainActivity.onCreate(MainActivity.java:151)
    
            at android.app.Activity.performCreate(Activity.java:5231)
    
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
    
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2148)
    
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
    
            at android.app.ActivityThread.access$800(ActivityThread.java:135)
    
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
    
            at android.os.Handler.dispatchMessage(Handler.java:102)
    
            at android.os.Looper.loop(Looper.java:136)
    
            at android.app.ActivityThread.main(ActivityThread.java:5001)
    
            at java.lang.reflect.Method.invokeNative(Native Method)
    
            at java.lang.reflect.Method.invoke(Method.java:515)
    
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
    
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
    
            at dalvik.system.NativeStart.main(Native Method)
    
</clinit></clinit>

    I have read several of the other top posts on the issue but I cannot figure out what is wrong. I downloaded the JavaCV through gradle, then I added the lib and lib/areabi folders. I imported ffmpeg.jar, javacpp.jar, javacv.jar and opencv.jar all to the lib folder. and I extracted all the .SO files from opencv-android-arm.jar and ffmpeg-android-arm.jar and put them in the lib/armeabi just like the instructions on the git repo. I cannot figure out what is going on. Anyone have any ideas ? Also my current setup is. Project->AppModule and then inside of that is where I have my lib and inside of lib i have the armeabi. Does anyone have any info on whats going on ?

  • java.lang.NoClassDefFoundError Android Studio Unity

    28 avril 2016, par Nestoraj

    I’m having some troubles when I try to generate a library that contains another one in Android Studio. First of all I am using Android Studio 2.0 and Unity 5.3.4f1. What I want to do is integrate FFMpeg in Unity so I decided to create my own library that use FFMpeg library as an intermediary. The FFMpeg library is here.

    To start I created a new empty project in Android Studio and inside of it, created a new module, which will be my library, using New->Module->Android Library and named it "ffmpegcodec". After that I opened build.gradle file inside the new module folder and paste :

    compile 'com.writingminds:FFmpegAndroid:0.3.2'

    inside dependencies brackets, and click Sync (It did not show any error).

    After that create a new Java Class inside src/main/java/package-name/ and named it FFMpegCodec. Inside this paste this code :

    public class FFMpegCodec {
    
private static FFmpeg ffmpeg;
    
private static Context context;
    
private static FFMpegCodec INSTANCE = null;
    

    
public FFMpegCodec(){
    
    INSTANCE = this;
    
}
    

    
public static FFMpegCodec instance(){
    
    if(INSTANCE == null){
    
        INSTANCE = new FFMpegCodec();
    
    }
    
    return INSTANCE;
    
}
    

    
public void setContext(Context ctx){
    
    this.context = ctx;
    
}
    

    
public void loadFFMpegBinary() {
    
    try {
    
        if (ffmpeg == null) {
    

    
            ffmpeg = FFmpeg.getInstance(context);
    
        }
    
        ffmpeg.loadBinary(new LoadBinaryResponseHandler() {
    
            @Override
    
            public void onFailure() {
    
                Log.e("FFMPEG", "ffmpeg : NOT correct Loaded");
    
            }
    

    
            @Override
    
            public void onSuccess() {
    
                Log.e("FFMPEG", "ffmpeg : correct Loaded");
    
            }
    
        });
    
    } catch (FFmpegNotSupportedException e) {
    

    
    } catch (Exception e) {
    

    
    }
    
}
    

    
public void execFFmpegCommand(final String[] command) {
    
    try {
    
        ffmpeg.execute(command, new ExecuteBinaryResponseHandler() {
    
            @Override
    
            public void onFailure(String s) {
    
                Log.e("FFMPEG", "FAILED with output : " + s);
    
            }
    

    
            @Override
    
            public void onSuccess(String s) {
    
                Log.e("FFMPEG", "SUCCESS with output : " + s);
    
            }
    

    
            @Override
    
            public void onProgress(String s) {
    
                Log.e("FFMPEG", "Started command : ffmpeg " + command);
    
                Log.e("FFMPEG", "progress : " + s);
    
            }
    

    
            @Override
    
            public void onStart() {
    
                Log.e("FFMPEG", "Started command : ffmpeg " + command);
    

    
            }
    

    
            @Override
    
            public void onFinish() {
    
                Log.e("FFMPEG", "Finished command : ffmpeg " + command);
    

    
            }
    
        });
    
    } catch (FFmpegCommandAlreadyRunningException e) {
    
        // do nothing for now
    
    }
    
}

    It basically generates an instance of FFmpeg and makes calls of ffmpeg commands.

    Once I have my lib done I decided to test it in my project so I include my lib in my app graddle using :

    compile project(':ffmpegcodec')

    After that I just paste this code to my MainActivity :

    public class MainActivity extends AppCompatActivity {
    

    
FFMpegCodec ffmpeg;
    

    
@Override
    
protected void onCreate(Bundle savedInstanceState) {
    
    super.onCreate(savedInstanceState);
    
    setContentView(R.layout.activity_main);
    

    
    Button execCommandButton = (Button) findViewById(R.id.execCommandButton);
    

    
    ffmpeg = FFMpegCodec.instance();
    

    

    
    execCommandButton.setOnClickListener(new View.OnClickListener() {
    
        @Override
    
        public void onClick(View v) {
    
            Toast.makeText(getApplicationContext(), "This is a Toast!!", Toast.LENGTH_SHORT).show();
    
            ffmpeg.setContext(MainActivity.this);
    
            ffmpeg.loadFFMpegBinary();
    
            String []cmd = new String[1];
    
            cmd[0] = "-version";
    
            ffmpeg.execFFmpegCommand(cmd);
    
        }
    
    });
    

    
}

    After that, I run my project and when I press the button it returns that everythings its ok, showing ffmpeg version.
    Once I have check that my lib works I decide to move it to Unity so copy the ffmpegcodec-realese.arr file inside ffmpegcodec/build/outputs/aar folder and paste it into my Unity project. Then I wrote an C# script to use my lib that contains this :

        using System;
    
    using System.Runtime.InteropServices;
    
    using UnityEngine;
    
    using System.Collections;
    
    using System.Diagnostics;
    

    
    public class ScreenRecorder {
    

    
    private AndroidJavaObject unityActivity = null;
    
    private AndroidJavaObject captureObject = null;
    

    
        // Use this for initialization
    
        public ScreenRecorder () {
    
            try{
    

    
                using (AndroidJavaClass unityPlayerActivityClass = new AndroidJavaClass("com.unity3d.player.UnityPlayer")) {
    
                    unityActivity = unityPlayerActivityClass.GetStatic<androidjavaobject>("currentActivity");
    
                }
    

    
                AndroidJavaClass captureClass = new AndroidJavaClass ("com.promineostudios.ffmpegcodec.FFMpegCodec");
    
                if (captureClass != null) {
    
                    captureObject = captureClass.CallStatic<androidjavaobject>("instance");
    
                    captureObject.Call("setContext", unityActivity);
    
                    captureObject.Call("loadFFMpegBinary");
    
                }
    
            }catch(Exception ex){
    
                UnityEngine.Debug.Log(ex);
    
            }
    
        }
    

    
    }
    
</androidjavaobject></androidjavaobject>

    The problems comes here. When I create a class instance using :

    AndroidJavaClass captureClass = new AndroidJavaClass ("com.promineostudios.ffmpegcodec.FFMpegCodec");

    It creates an instance correctly, and also when I create an object using :

    captureObject = captureClass.CallStatic<androidjavaobject>("instance");
    
</androidjavaobject>

    But when I try to get access to FFMpeg library methods like in "setContext" it fails and returns this :

    UnityEngine.AndroidJavaException: java.lang.NoClassDefFoundError: Failed resolution of: Lcom/github/hiteshsondhi88/libffmpeg/FFmpeg;
    
java.lang.NoClassDefFoundError: Failed resolution of: Lcom/github/hiteshsondhi88/libffmpeg/FFmpeg;
    
  at com.promineostudios.ffmpegcodec.FFMpegCodec.loadFFMpegBinary(FFMpegAndroidCodec.java:39)
    
  at com.unity3d.player.UnityPlayer.nativeRender(Native Method)
    
  at com.unity3d.player.UnityPlayer.a(Unknown Source)
    
  at com.unity3d.player.UnityPlayer$b.run(Unknown Source)
    
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.github.hiteshsondhi88.libffmpeg.FFmpeg" on path: DexPathList[[zip file "/data/app/com.promineostudios.ffmpegmodule-1/base.apk"],nativeLibraryDirectories=[/data/app/com.promineostudios.ffmpegmodule-1/lib/arm, /vendor/lib, /system/lib]]
    
  at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
    
  at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
    
  at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
    
  at com.promineostudios.ffmpegcodec.FFMpegCodec.loadFFMpegBinary(FFMpegAndroidCodec.java:39) 
    
  at com.unity3d.player.UnityPlayer.nativeRender(Native Method) 
    
  at com.unity3d.player.UnityPlayer.a(Unknown Source) 
    
  at com.unity3d.player.UnityPlayer$b.run(Unknown Source)

    I think that the problem is in when I export my lib into Unity but I do not know what is going wrong. If anybody could help me I will be really appreciated.

    Thanks and excuse me for my English.

  • java.lang.NoClassDefFoundError Android Studio Unity

    26 juin 2017, par Nestoraj

    I’m having some troubles when I try to generate a library that contains another one in Android Studio. First of all I am using Android Studio 2.0 and Unity 5.3.4f1. What I want to do is integrate FFMpeg in Unity so I decided to create my own library that use FFMpeg library as an intermediary. The FFMpeg library is here.

    To start I created a new empty project in Android Studio and inside of it, created a new module, which will be my library, using New->Module->Android Library and named it "ffmpegcodec". After that I opened build.gradle file inside the new module folder and paste :

    compile 'com.writingminds:FFmpegAndroid:0.3.2'

    inside dependencies brackets, and click Sync (It did not show any error).

    After that create a new Java Class inside src/main/java/package-name/ and named it FFMpegCodec. Inside this paste this code :

    public class FFMpegCodec {
    
private static FFmpeg ffmpeg;
    
private static Context context;
    
private static FFMpegCodec INSTANCE = null;
    

    
public FFMpegCodec(){
    
    INSTANCE = this;
    
}
    

    
public static FFMpegCodec instance(){
    
    if(INSTANCE == null){
    
        INSTANCE = new FFMpegCodec();
    
    }
    
    return INSTANCE;
    
}
    

    
public void setContext(Context ctx){
    
    this.context = ctx;
    
}
    

    
public void loadFFMpegBinary() {
    
    try {
    
        if (ffmpeg == null) {
    

    
            ffmpeg = FFmpeg.getInstance(context);
    
        }
    
        ffmpeg.loadBinary(new LoadBinaryResponseHandler() {
    
            @Override
    
            public void onFailure() {
    
                Log.e("FFMPEG", "ffmpeg : NOT correct Loaded");
    
            }
    

    
            @Override
    
            public void onSuccess() {
    
                Log.e("FFMPEG", "ffmpeg : correct Loaded");
    
            }
    
        });
    
    } catch (FFmpegNotSupportedException e) {
    

    
    } catch (Exception e) {
    

    
    }
    
}
    

    
public void execFFmpegCommand(final String[] command) {
    
    try {
    
        ffmpeg.execute(command, new ExecuteBinaryResponseHandler() {
    
            @Override
    
            public void onFailure(String s) {
    
                Log.e("FFMPEG", "FAILED with output : " + s);
    
            }
    

    
            @Override
    
            public void onSuccess(String s) {
    
                Log.e("FFMPEG", "SUCCESS with output : " + s);
    
            }
    

    
            @Override
    
            public void onProgress(String s) {
    
                Log.e("FFMPEG", "Started command : ffmpeg " + command);
    
                Log.e("FFMPEG", "progress : " + s);
    
            }
    

    
            @Override
    
            public void onStart() {
    
                Log.e("FFMPEG", "Started command : ffmpeg " + command);
    

    
            }
    

    
            @Override
    
            public void onFinish() {
    
                Log.e("FFMPEG", "Finished command : ffmpeg " + command);
    

    
            }
    
        });
    
    } catch (FFmpegCommandAlreadyRunningException e) {
    
        // do nothing for now
    
    }
    
}

    It basically generates an instance of FFmpeg and makes calls of ffmpeg commands.

    Once I have my lib done I decided to test it in my project so I include my lib in my app graddle using :

    compile project(':ffmpegcodec')

    After that I just paste this code to my MainActivity :

    public class MainActivity extends AppCompatActivity {
    

    
FFMpegCodec ffmpeg;
    

    
@Override
    
protected void onCreate(Bundle savedInstanceState) {
    
    super.onCreate(savedInstanceState);
    
    setContentView(R.layout.activity_main);
    

    
    Button execCommandButton = (Button) findViewById(R.id.execCommandButton);
    

    
    ffmpeg = FFMpegCodec.instance();
    

    

    
    execCommandButton.setOnClickListener(new View.OnClickListener() {
    
        @Override
    
        public void onClick(View v) {
    
            Toast.makeText(getApplicationContext(), "This is a Toast!!", Toast.LENGTH_SHORT).show();
    
            ffmpeg.setContext(MainActivity.this);
    
            ffmpeg.loadFFMpegBinary();
    
            String []cmd = new String[1];
    
            cmd[0] = "-version";
    
            ffmpeg.execFFmpegCommand(cmd);
    
        }
    
    });
    

    
}

    After that, I run my project and when I press the button it returns that everythings its ok, showing ffmpeg version.
    Once I have check that my lib works I decide to move it to Unity so copy the ffmpegcodec-realese.arr file inside ffmpegcodec/build/outputs/aar folder and paste it into my Unity project. Then I wrote an C# script to use my lib that contains this :

        using System;
    
    using System.Runtime.InteropServices;
    
    using UnityEngine;
    
    using System.Collections;
    
    using System.Diagnostics;
    

    
    public class ScreenRecorder {
    

    
    private AndroidJavaObject unityActivity = null;
    
    private AndroidJavaObject captureObject = null;
    

    
        // Use this for initialization
    
        public ScreenRecorder () {
    
            try{
    

    
                using (AndroidJavaClass unityPlayerActivityClass = new AndroidJavaClass("com.unity3d.player.UnityPlayer")) {
    
                    unityActivity = unityPlayerActivityClass.GetStatic<androidjavaobject>("currentActivity");
    
                }
    

    
                AndroidJavaClass captureClass = new AndroidJavaClass ("com.promineostudios.ffmpegcodec.FFMpegCodec");
    
                if (captureClass != null) {
    
                    captureObject = captureClass.CallStatic<androidjavaobject>("instance");
    
                    captureObject.Call("setContext", unityActivity);
    
                    captureObject.Call("loadFFMpegBinary");
    
                }
    
            }catch(Exception ex){
    
                UnityEngine.Debug.Log(ex);
    
            }
    
        }
    

    
    }
    
</androidjavaobject></androidjavaobject>

    The problems comes here. When I create a class instance using :

    AndroidJavaClass captureClass = new AndroidJavaClass ("com.promineostudios.ffmpegcodec.FFMpegCodec");

    It creates an instance correctly, and also when I create an object using :

    captureObject = captureClass.CallStatic<androidjavaobject>("instance");
    
</androidjavaobject>

    But when I try to get access to FFMpeg library methods like in "setContext" it fails and returns this :

    UnityEngine.AndroidJavaException: java.lang.NoClassDefFoundError: Failed resolution of: Lcom/github/hiteshsondhi88/libffmpeg/FFmpeg;
    
java.lang.NoClassDefFoundError: Failed resolution of: Lcom/github/hiteshsondhi88/libffmpeg/FFmpeg;
    
  at com.promineostudios.ffmpegcodec.FFMpegCodec.loadFFMpegBinary(FFMpegAndroidCodec.java:39)
    
  at com.unity3d.player.UnityPlayer.nativeRender(Native Method)
    
  at com.unity3d.player.UnityPlayer.a(Unknown Source)
    
  at com.unity3d.player.UnityPlayer$b.run(Unknown Source)
    
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.github.hiteshsondhi88.libffmpeg.FFmpeg" on path: DexPathList[[zip file "/data/app/com.promineostudios.ffmpegmodule-1/base.apk"],nativeLibraryDirectories=[/data/app/com.promineostudios.ffmpegmodule-1/lib/arm, /vendor/lib, /system/lib]]
    
  at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
    
  at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
    
  at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
    
  at com.promineostudios.ffmpegcodec.FFMpegCodec.loadFFMpegBinary(FFMpegAndroidCodec.java:39) 
    
  at com.unity3d.player.UnityPlayer.nativeRender(Native Method) 
    
  at com.unity3d.player.UnityPlayer.a(Unknown Source) 
    
  at com.unity3d.player.UnityPlayer$b.run(Unknown Source)

    I think that the problem is in when I export my lib into Unity but I do not know what is going wrong. If anybody could help me I will be really appreciated.

    Thanks and excuse me for my English.

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