Code review issues fixed. Compatibility issues fixed.

modules/java/generator/src/java/android+CameraBridgeViewBase.java

@@ -6,6 +6,7 @@ import org.opencv.R;
 import org.opencv.android.Utils;
 import org.opencv.core.Mat;
 import org.opencv.core.Size;
+import org.opencv.highgui.Highgui;
 
 import android.app.Activity;
 import android.app.AlertDialog;
@@ -35,7 +36,7 @@ public abstract class CameraBridgeViewBase extends SurfaceView implements Surfac
 
     private int mState = STOPPED;
     private Bitmap mCacheBitmap;
-    private CvCameraViewListener mListener;
+    private CvCameraViewListener2 mListener;
     private boolean mSurfaceExist;
     private Object mSyncObject = new Object();
 
@@ -43,6 +44,7 @@ public abstract class CameraBridgeViewBase extends SurfaceView implements Surfac
     protected int mFrameHeight;
     protected int mMaxHeight;
     protected int mMaxWidth;
+    protected int mPreviewFormat = Highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA;
     protected int mCameraIndex = -1;
     protected boolean mEnabled;
     protected FpsMeter mFpsMeter = null;
@@ -84,14 +86,75 @@ public abstract class CameraBridgeViewBase extends SurfaceView implements Surfac
          */
         public void onCameraViewStopped();
 
+        /**
+         * This method is invoked when delivery of the frame needs to be done.
+         * The returned values - is a modified frame which needs to be displayed on the screen.
+         * TODO: pass the parameters specifying the format of the frame (BPP, YUV or RGB and etc)
+         */
+        public Mat onCameraFrame(Mat inputFrame);
+    }
+
+    public interface CvCameraViewListener2 {
+        /**
+         * This method is invoked when camera preview has started. After this method is invoked
+         * the frames will start to be delivered to client via the onCameraFrame() callback.
+         * @param width -  the width of the frames that will be delivered
+         * @param height - the height of the frames that will be delivered
+         */
+        public void onCameraViewStarted(int width, int height);
+
+        /**
+         * This method is invoked when camera preview has been stopped for some reason.
+         * No frames will be delivered via onCameraFrame() callback after this method is called.
+         */
+        public void onCameraViewStopped();
+
         /**
          * This method is invoked when delivery of the frame needs to be done.
          * The returned values - is a modified frame which needs to be displayed on the screen.
          * TODO: pass the parameters specifying the format of the frame (BPP, YUV or RGB and etc)
          */
         public Mat onCameraFrame(CvCameraViewFrame inputFrame);
+    };
 
-    }
+    protected class CvCameraViewListenerAdapter implements CvCameraViewListener2  {
+        public CvCameraViewListenerAdapter(CvCameraViewListener oldStypeListener) {
+            mOldStyleListener = oldStypeListener;
+        }
+
+        public void onCameraViewStarted(int width, int height) {
+            mOldStyleListener.onCameraViewStarted(width, height);
+        }
+
+        public void onCameraViewStopped() {
+            mOldStyleListener.onCameraViewStopped();
+        }
+
+        public Mat onCameraFrame(CvCameraViewFrame inputFrame) {
+             Mat result = null;
+             switch (mPreviewFormat) {
+                case Highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA:
+                    result = mOldStyleListener.onCameraFrame(inputFrame.rgba());
+                    break;
+                case Highgui.CV_CAP_ANDROID_GREY_FRAME:
+                    result = mOldStyleListener.onCameraFrame(inputFrame.gray());
+                    break;
+                default:
+                    Log.e(TAG, "Invalid frame format! Only RGBA and Gray Scale are supported!");
+            };
+
+            return result;
+        }
+
+        public void setFrameFormat(int format) {
+            mPreviewFormat = format;
+        }
+
+        private CvCameraViewListenerAdapter() {}
+
+        private int mPreviewFormat = Highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA;
+        private CvCameraViewListener mOldStyleListener;
+    };
 
     public interface CvCameraViewFrame {
         public abstract Mat rgba();
@@ -168,10 +231,16 @@ public abstract class CameraBridgeViewBase extends SurfaceView implements Surfac
      * @param listener
      */
 
-    public void setCvCameraViewListener(CvCameraViewListener listener) {
+    public void setCvCameraViewListener(CvCameraViewListener2 listener) {
         mListener = listener;
     }
 
+    public void setCvCameraViewListener(CvCameraViewListener listener) {
+        CvCameraViewListenerAdapter adapter = new CvCameraViewListenerAdapter(listener);
+        adapter.setFrameFormat(mPreviewFormat);
+        mListener = adapter;
+    }
+
     /**
      * This method sets the maximum size that camera frame is allowed to be. When selecting
      * size - the biggest size which less or equal the size set will be selected.
@@ -186,6 +255,15 @@ public abstract class CameraBridgeViewBase extends SurfaceView implements Surfac
         mMaxHeight = maxHeight;
     }
 
+    public void SetCaptureFormat(int format)
+    {
+        mPreviewFormat = format;
+        if (mListener instanceof CvCameraViewListenerAdapter) {
+            CvCameraViewListenerAdapter adapter = (CvCameraViewListenerAdapter) mListener;
+            adapter.setFrameFormat(mPreviewFormat);
+        }
+    }
+
     /**
      * Called when mSyncObject lock is held
      */

samples/android/15-puzzle/src/org/opencv/samples/puzzle15/Puzzle15Activity.java

@@ -6,7 +6,7 @@ import org.opencv.android.LoaderCallbackInterface;
 import org.opencv.android.OpenCVLoader;
 import org.opencv.core.Mat;
 import org.opencv.android.CameraBridgeViewBase;
-import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener;
+import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener2;
 
 import android.os.Bundle;
 import android.app.Activity;
@@ -17,7 +17,7 @@ import android.view.MotionEvent;
 import android.view.View;
 import android.view.WindowManager;
 
-public class Puzzle15Activity extends Activity implements CvCameraViewListener, View.OnTouchListener {
+public class Puzzle15Activity extends Activity implements CvCameraViewListener2, View.OnTouchListener {
 
     private static final String  TAG = "Sample::Puzzle15::Activity";
 

samples/android/color-blob-detection/src/org/opencv/samples/colorblobdetect/ColorBlobDetectionActivity.java

@@ -14,7 +14,7 @@ import org.opencv.core.Rect;
 import org.opencv.core.Scalar;
 import org.opencv.core.Size;
 import org.opencv.android.CameraBridgeViewBase;
-import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener;
+import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener2;
 import org.opencv.imgproc.Imgproc;
 
 import android.app.Activity;
@@ -26,7 +26,7 @@ import android.view.Window;
 import android.view.WindowManager;
 import android.view.View.OnTouchListener;
 
-public class ColorBlobDetectionActivity extends Activity implements OnTouchListener, CvCameraViewListener {
+public class ColorBlobDetectionActivity extends Activity implements OnTouchListener, CvCameraViewListener2 {
     private static final String  TAG              = "OCVSample::Activity";
 
     private boolean              mIsColorSelected = false;

samples/android/face-detection/src/org/opencv/samples/facedetect/FdActivity.java

@@ -16,7 +16,7 @@ import org.opencv.core.Rect;
 import org.opencv.core.Scalar;
 import org.opencv.core.Size;
 import org.opencv.android.CameraBridgeViewBase;
-import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener;
+import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener2;
 import org.opencv.objdetect.CascadeClassifier;
 
 import android.app.Activity;
@@ -27,7 +27,7 @@ import android.view.Menu;
 import android.view.MenuItem;
 import android.view.WindowManager;
 
-public class FdActivity extends Activity implements CvCameraViewListener {
+public class FdActivity extends Activity implements CvCameraViewListener2 {
 
     private static final String    TAG                 = "OCVSample::Activity";
     private static final Scalar    FACE_RECT_COLOR     = new Scalar(0, 255, 0, 255);

samples/android/image-manipulations/src/org/opencv/samples/imagemanipulations/ImageManipulationsActivity.java

@@ -15,7 +15,7 @@ import org.opencv.core.Point;
 import org.opencv.core.Scalar;
 import org.opencv.core.Size;
 import org.opencv.android.CameraBridgeViewBase;
-import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener;
+import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener2;
 import org.opencv.imgproc.Imgproc;
 
 import android.app.Activity;
@@ -25,7 +25,7 @@ import android.view.Menu;
 import android.view.MenuItem;
 import android.view.WindowManager;
 
-public class ImageManipulationsActivity extends Activity implements CvCameraViewListener {
+public class ImageManipulationsActivity extends Activity implements CvCameraViewListener2 {
     private static final String  TAG                 = "OCVSample::Activity";
 
     public static final int      VIEW_MODE_RGBA      = 0;

samples/android/tutorial-1-addopencv/src/org/opencv/samples/tutorial1/Sample1Java.java

@@ -6,7 +6,7 @@ import org.opencv.android.LoaderCallbackInterface;
 import org.opencv.android.OpenCVLoader;
 import org.opencv.core.Mat;
 import org.opencv.android.CameraBridgeViewBase;
-import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener;
+import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener2;
 
 import android.app.Activity;
 import android.os.Bundle;
@@ -17,7 +17,7 @@ import android.view.SurfaceView;
 import android.view.WindowManager;
 import android.widget.Toast;
 
-public class Sample1Java extends Activity implements CvCameraViewListener {
+public class Sample1Java extends Activity implements CvCameraViewListener2 {
     private static final String TAG = "OCVSample::Activity";
 
     private CameraBridgeViewBase mOpenCvCameraView;

samples/android/tutorial-2-opencvcamera/src/org/opencv/samples/tutorial2/Sample2NativeCamera.java

@@ -10,7 +10,7 @@ import org.opencv.core.Mat;
 import org.opencv.core.Point;
 import org.opencv.core.Scalar;
 import org.opencv.android.CameraBridgeViewBase;
-import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener;
+import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener2;
 import org.opencv.imgproc.Imgproc;
 
 import android.app.Activity;
@@ -20,7 +20,7 @@ import android.view.Menu;
 import android.view.MenuItem;
 import android.view.WindowManager;
 
-public class Sample2NativeCamera extends Activity implements CvCameraViewListener {
+public class Sample2NativeCamera extends Activity implements CvCameraViewListener2 {
     private static final String  TAG             = "OCVSample::Activity";
 
     public static final int      VIEW_MODE_RGBA  = 0;

samples/android/tutorial-3-native/src/org/opencv/samples/tutorial3/Sample3Native.java

@@ -7,14 +7,14 @@ import org.opencv.android.OpenCVLoader;
 import org.opencv.core.CvType;
 import org.opencv.core.Mat;
 import org.opencv.android.CameraBridgeViewBase;
-import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener;
+import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener2;
 
 import android.app.Activity;
 import android.os.Bundle;
 import android.util.Log;
 import android.view.WindowManager;
 
-public class Sample3Native extends Activity implements CvCameraViewListener {
+public class Sample3Native extends Activity implements CvCameraViewListener2 {
     private static final String TAG = "OCVSample::Activity";
 
     private Mat                    mRgba;

samples/android/tutorial-4-mixed/src/org/opencv/samples/tutorial4/Sample4Mixed.java

@@ -7,7 +7,7 @@ import org.opencv.android.OpenCVLoader;
 import org.opencv.core.CvType;
 import org.opencv.core.Mat;
 import org.opencv.android.CameraBridgeViewBase;
-import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener;
+import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener2;
 import org.opencv.imgproc.Imgproc;
 
 import android.app.Activity;
@@ -17,7 +17,7 @@ import android.view.Menu;
 import android.view.MenuItem;
 import android.view.WindowManager;
 
-public class Sample4Mixed extends Activity implements CvCameraViewListener {
+public class Sample4Mixed extends Activity implements CvCameraViewListener2 {
     private static final String    TAG = "OCVSample::Activity";
 
     private static final int       VIEW_MODE_RGBA     = 0;
@@ -133,13 +133,12 @@ public class Sample4Mixed extends Activity implements CvCameraViewListener {
             // input frame has gray scale format
             mRgba = inputFrame.rgba();
             Imgproc.Canny(inputFrame.gray(), mIntermediateMat, 80, 100);
-            Imgproc.cvtColor(mIntermediateMat, mRgba, Imgproc.COLOR_GRAY2BGRA, 4);
+            Imgproc.cvtColor(mIntermediateMat, mRgba, Imgproc.COLOR_GRAY2RGBA, 4);
             break;
         case VIEW_MODE_FEATURES:
             // input frame has RGBA format
             mRgba = inputFrame.rgba();
             mGray = inputFrame.gray();
-            Imgproc.cvtColor(mRgba, mGray, Imgproc.COLOR_RGBA2GRAY);
             FindFeatures(mGray.getNativeObjAddr(), mRgba.getNativeObjAddr());
             break;
         }

samples/android/tutorial-5-cameracontrol/src/org/opencv/samples/tutorial5/Sample5CameraControl.java

@@ -10,7 +10,7 @@ import org.opencv.android.CameraBridgeViewBase.CvCameraViewFrame;
 import org.opencv.android.LoaderCallbackInterface;
 import org.opencv.android.OpenCVLoader;
 import org.opencv.core.Mat;
-import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener;
+import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener2;
 
 import android.annotation.SuppressLint;
 import android.app.Activity;
@@ -28,7 +28,7 @@ import android.view.View.OnTouchListener;
 import android.view.WindowManager;
 import android.widget.Toast;
 
-public class Sample5CameraControl extends Activity implements CvCameraViewListener, OnTouchListener {
+public class Sample5CameraControl extends Activity implements CvCameraViewListener2, OnTouchListener {
     private static final String TAG = "OCVSample::Activity";
 
     private SampleJavaCameraView mOpenCvCameraView;