Loader classes for OpenCV with Android service added. Library loading in OpenCV API removed.

modules/java/src/java/AsyncServiceHelper.java

@@ -0,0 +1,165 @@
+package org.opencv.android;
+
+import java.io.File;
+import java.util.StringTokenizer;
+
+import org.opencv.engine.OpenCVEngineInterface;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.ServiceConnection;
+import android.os.IBinder;
+import android.os.RemoteException;
+import android.util.Log;
+
+public class AsyncServiceHelper
+{		
+	public static int initOpenCV(String Version, Context AppContext, 
+			LoaderCallbackInterface Callback)
+	{
+		AsyncServiceHelper helper = new AsyncServiceHelper(Version, AppContext, Callback);
+		if (AppContext.bindService(new Intent("org.opencv.engine.BIND"), 
+				helper.mServiceConnection, Context.BIND_AUTO_CREATE))
+		{
+			return OpenCVLoader.Success;
+		}
+		else
+		{
+			return OpenCVLoader.NoService;
+		}
+	}
+	
+	protected AsyncServiceHelper(String Version, Context AppContext, 
+			LoaderCallbackInterface Callback)
+	{ 
+		mOpenCVersion = Version;
+		mUserAppCallback = Callback;
+		mAppContext = AppContext;
+	}
+	
+	protected static final String TAG = "OpenCvEngine/Helper";
+	protected OpenCVEngineInterface mEngineService;
+	protected LoaderCallbackInterface mUserAppCallback;
+	protected String mOpenCVersion;
+	protected Context mAppContext;
+	protected int mStatus = OpenCVLoader.Success;
+	
+	protected ServiceConnection mServiceConnection = new ServiceConnection()
+	{
+		public void onServiceConnected(ComponentName className, IBinder service)
+		{
+			Log.d(TAG, "Service connection created");
+			mEngineService = OpenCVEngineInterface.Stub.asInterface(service);
+			if (null == mEngineService)
+			{
+				Log.d(TAG, "Engine connection fails. May be service was not installed?");
+				mStatus = OpenCVLoader.NoService;
+			} 
+			else 
+			{
+				try
+				{
+					Log.d(TAG, "Trying to get library path");
+					String path = mEngineService.getLibPathByVersion(mOpenCVersion);
+					if ((null == path) || (path.length() == 0))
+					{
+						if (mEngineService.installVersion(mOpenCVersion))
+						{
+							mStatus = OpenCVLoader.RestartRequired;
+						}
+						else
+						{
+							Log.d(TAG, "OpenCV package was not installed!");
+							mStatus = OpenCVLoader.MarketError;													
+						}
+					}
+					else
+					{
+						Log.d(TAG, "Trying to get library list");
+						String libs = mEngineService.getLibraryList(mOpenCVersion); 
+						Log.d(TAG, "Library list: \"" + libs + "\"");
+						Log.d(TAG, "First attempt to load libs");
+						if (initOpenCVLibs(path, libs))
+						{
+							Log.d(TAG, "First attempt to load libs is OK");
+							mStatus = OpenCVLoader.Success;
+						}
+						else
+						{
+							Log.d(TAG, "First attempt to load libs fails");
+							mStatus = OpenCVLoader.InitFailed;
+						}
+					}
+				}
+				catch (RemoteException e)
+				{
+					e.printStackTrace();
+					mStatus = OpenCVLoader.InitFailed;
+				}
+			}
+			Log.d(TAG, "Init finished with status " + mStatus);
+			Log.d(TAG, "Unbind from service");
+			mAppContext.unbindService(mServiceConnection);
+			Log.d(TAG, "Calling using callback");
+			mUserAppCallback.onEngineConnected(mStatus);
+		}
+		
+		private boolean loadLibrary(String AbsPath)
+		{
+			boolean result = true;
+			
+			Log.d(TAG, "Trying to load library " + AbsPath);
+			try
+			{
+				System.load(AbsPath);
+				Log.d(TAG, "OpenCV libs init was ok!");
+			}
+			catch(Exception e)
+			{
+				Log.d(TAG, "Cannot load library \"" + AbsPath + "\"");
+				e.printStackTrace();
+				result &= false;
+			}
+			
+			return result;
+		}
+		
+		private boolean initOpenCVLibs(String Path, String Libs)
+		{
+			Log.d(TAG, "Trying to init OpenCV libs");
+			if ((null != Path) && (Path.length() != 0))
+			{
+				boolean result = true;
+				if ((null != Libs) && (Libs.length() != 0))
+				{
+					Log.d(TAG, "Trying to load libs by dependency list");
+					StringTokenizer splitter = new StringTokenizer(Libs, ";");
+					while(splitter.hasMoreTokens())
+					{
+						String AbsLibraryPath = Path + File.separator + splitter.nextToken();
+						result &= loadLibrary(AbsLibraryPath);
+					}
+				}
+				else
+				{
+					// If dependencies list is not defined or empty
+					String AbsLibraryPath = Path + File.separator + "libopencv_java.so";
+					result &= loadLibrary(AbsLibraryPath);
+				}
+				
+				return result;
+			}
+			else
+			{
+				Log.d(TAG, "Library path \"" + Path + "\" is empty");
+				return false;
+			}
+		}
+
+		public void onServiceDisconnected(ComponentName className)
+		{
+			mEngineService = null;
+		}
+	};
+}

modules/java/src/java/LoaderCallbackInterface.java

@@ -0,0 +1,6 @@
+package org.opencv.android;
+
+public interface LoaderCallbackInterface
+{
+	public void onEngineConnected(int status);
+};

modules/java/src/java/OpenCVLoader.java

@@ -0,0 +1,40 @@
+package org.opencv.android;
+
+import android.content.Context;
+import android.util.Log;
+
+public class OpenCVLoader
+{	
+	public static final int Success = 0;
+	public static final int NoService = 1;
+	public static final int RestartRequired = 2;
+	public static final int MarketError = 3;
+	public static final int InitFailed = 0xff;
+	
+	public static int initStatic()
+	{
+		int result;
+		
+		try
+		{
+			System.loadLibrary("opencv_java");
+			result = Success;
+		}
+		catch(Exception e)
+		{
+			Log.e(TAG, "OpenCV error: Cannot load native library");
+			e.printStackTrace();
+			result = InitFailed;
+		}
+		
+		return result;
+	}
+	
+	public static int initAsync(String Version, Context AppContext, 
+			LoaderCallbackInterface Callback)
+	{
+		return AsyncServiceHelper.initOpenCV(Version, AppContext, Callback);
+	}
+	
+	private static final String TAG = "OpenCV/Helper";
+}

modules/java/src/java/android+Utils.java

@@ -113,11 +113,6 @@ public class Utils {
         nMatToBitmap(m.nativeObj, b);
     }
 
-    // native stuff
-    static {
-        System.loadLibrary("opencv_java");
-    }
-
     private static native void nBitmapToMat(Bitmap b, long m_addr);
 
     private static native void nMatToBitmap(long m_addr, Bitmap b);

modules/java/src/java/highgui+VideoCapture.java

@@ -194,12 +194,6 @@ public class VideoCapture {
         super.finalize();
     }
 
-    // native stuff
-
-    static {
-        System.loadLibrary("opencv_java");
-    }
-
     // C++: VideoCapture::VideoCapture()
     private static native long n_VideoCapture();