Added OpenCV references and initialization code.

AndroidManifest.xml

@@ -14,6 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
 -->
+<!-- android:screenOrientation="portrait" -->
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="ve.ucv.ciens.ccg.nxtar"
     android:versionCode="1"
@@ -37,7 +38,6 @@
         <activity
             android:name=".MainActivity"
             android:label="@string/app_name"
-            android:screenOrientation="portrait"
             android:configChanges="keyboard|keyboardHidden|orientation|screenSize">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

project.properties

@@ -9,3 +9,4 @@
 
 # Project target.
 target=android-19
+android.library.reference.1=../../../../../workspace/OpenCV Library - 2.4.7

res/values-es/strings.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ * Copyright (C) 2013 Miguel Angel Astor Romero
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+-->
+<resources>
+    <string name="app_name">NxtAR</string>
+    <string name="ocv_failed">No se pudo inicializar OpenCV</string>
+    <string name="ocv_success">OpenCV inicializado con exito</string>
+</resources>

res/values/strings.xml

@@ -16,4 +16,6 @@
 -->
 <resources>
     <string name="app_name">NxtAR</string>
+    <string name="ocv_failed">Failed to initialize OpenCV</string>
+    <string name="ocv_success">OpenCV initialized successfully</string>
 </resources>

src/ve/ucv/ciens/ccg/nxtar/MainActivity.java

@@ -15,9 +15,16 @@
  */
 package ve.ucv.ciens.ccg.nxtar;
 
+import org.opencv.android.BaseLoaderCallback;
+import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener;
+import org.opencv.android.LoaderCallbackInterface;
+import org.opencv.android.OpenCVLoader;
+import org.opencv.core.Mat;
+
 import ve.ucv.ciens.ccg.nxtar.interfaces.MulticastEnabler;
 import ve.ucv.ciens.ccg.nxtar.interfaces.Toaster;
 import android.content.Context;
+import android.content.pm.ActivityInfo;
 import android.net.wifi.WifiManager;
 import android.net.wifi.WifiManager.MulticastLock;
 import android.os.Bundle;
@@ -27,8 +34,9 @@ import android.widget.Toast;
 import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.backends.android.AndroidApplication;
 import com.badlogic.gdx.backends.android.AndroidApplicationConfiguration;
+import com.badlogic.gdx.controllers.mappings.Ouya;
 
-public class MainActivity extends AndroidApplication implements Toaster, MulticastEnabler{
+public class MainActivity extends AndroidApplication implements Toaster, MulticastEnabler, CvCameraViewListener{
 	private static final String TAG = "NXTAR_ANDROID_MAIN";
 	private static final String CLASS_NAME = MainActivity.class.getSimpleName();
 
@@ -36,11 +44,21 @@ public class MainActivity extends AndroidApplication implements Toaster, Multica
 	private MulticastLock multicastLock;
 	private Handler uiHandler;
 	private Context uiContext;
+	private boolean ocvOn;
+	private BaseLoaderCallback loaderCallback;
 
 	@Override
 	public void onCreate(Bundle savedInstanceState) {
 		super.onCreate(savedInstanceState);
 
+		ocvOn = false;
+
+		if(!Ouya.runningOnOuya){
+			setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
+		}else{
+			setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
+		}
+
 		uiHandler = new Handler();
 		uiContext = this;
 		wifiManager = (WifiManager)getSystemService(Context.WIFI_SERVICE);
@@ -51,6 +69,23 @@ public class MainActivity extends AndroidApplication implements Toaster, Multica
 		cfg.useCompass = false;
 		cfg.useWakelock = true;
 
+		loaderCallback = new BaseLoaderCallback(this){
+			@Override
+			public void onManagerConnected(int status){
+				switch(status){
+				case LoaderCallbackInterface.SUCCESS:
+					ocvOn = true;
+					Toast.makeText(uiContext, R.string.ocv_success, Toast.LENGTH_LONG).show();
+					break;
+				default:
+					Toast.makeText(uiContext, R.string.ocv_failed, Toast.LENGTH_LONG).show();
+					Gdx.app.exit();
+					break;
+				}
+			}
+		};
+
+		OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_7, this, loaderCallback);
 		initialize(new NxtARCore(this), cfg);
 	}
 
@@ -82,7 +117,7 @@ public class MainActivity extends AndroidApplication implements Toaster, Multica
 	/////////////////////////////////////////
 	@Override
 	public void enableMulticast(){
-		Gdx.app.debug(TAG, CLASS_NAME + ".enableMulticast() :: Requesting multicast lock.");
+		Gdx.app.log(TAG, CLASS_NAME + ".enableMulticast() :: Requesting multicast lock.");
 		multicastLock = wifiManager.createMulticastLock(TAG);
 		multicastLock.setReferenceCounted(true);
 		multicastLock.acquire();
@@ -90,10 +125,33 @@ public class MainActivity extends AndroidApplication implements Toaster, Multica
 
 	@Override
 	public void disableMulticast() {
-		Gdx.app.debug(TAG, CLASS_NAME + ".disableMulticast() :: Releasing multicast lock.");
+		Gdx.app.log(TAG, CLASS_NAME + ".disableMulticast() :: Releasing multicast lock.");
 		if(multicastLock != null){
 			multicastLock.release();
 			multicastLock = null;
 		}
 	}
+
+	/////////////////////////////////////////////
+	// CvCameraViewListener interface methods. //
+	/////////////////////////////////////////////
+	/**
+	 * <p>This method does nothing. It is here because it must be implemented in order to use OpenCV.</p>
+	 */
+	@Override
+	public void onCameraViewStarted(int width, int height){ }
+
+	/**
+	 * <p>This method does nothing. It is here because it must be implemented in order to use OpenCV.</p>
+	 */
+	@Override
+	public void onCameraViewStopped(){ }
+
+	/**
+	 * <p>This method does nothing. It is here because it must be implemented in order to use OpenCV.</p>
+	 */
+	@Override
+	public Mat onCameraFrame(Mat inputFrame){
+		return null;
+	}
 }