Get Bitmap from Mobile vision's face tracking camera

Question

I am trying to get a bitmap from mobile vision's face tracking camera but after about 5 hours of trying, i am kind of stuck.

I. Firstly, Result: Blank image with

Bitmap image = mSurfaceView.getDrawingCache(). 

I already set true for SetDrawingCache in here:

    public CameraSourcePreview(Context context, AttributeSet attrs) {
    super(context, attrs);
    mContext = context;
    mStartRequested = false;
    mSurfaceAvailable = false;
    mSurfaceView = new SurfaceView(context);
    mSurfaceView.getHolder().addCallback(new SurfaceCallback());

    //HERE
    mSurfaceView.setDrawingCacheEnabled(true);

    addView(mSurfaceView);
    }

II. After that i tried: Take screenshot of Graphic OVerlay, and get a shot from camera, then merge these 2 bitmap -> Result: Horrible. Everything need to be right is wrong.

If anyone can come up with any solutions( even suggestions are fine), i would be very appreciated.

Quan.

Answer 1

After 8 hours of trying. I get this workaround.

First, i get the overlay screenshot with it's X and Y in the facetracking camera:

overlay = screenShot(mGraphicOverlay);
final float overlayX = mGraphicOverlay.getX();
final float overlayY =  mGraphicOverlay.getY();

Then i take a picture from the camera. Resize the overlay to fit the picture from the camera. After that i merge those 2 into 1 bitmap. And send it back to main activity.

 mCameraSource.takePicture(null, new CameraSource.PictureCallback(){
                @Override
                public void onPictureTaken(byte[] bytes) {
                    //Bitmap loadedImage = null;
                    loaded = BitmapFactory.decodeByteArray(bytes, 0, bytes.length);

                    Bitmap rotatedBitmap = null;
                    Matrix rotateMatrix = new Matrix();
                    rotateMatrix.postRotate(90);
                    rotatedBitmap = Bitmap.createBitmap(loaded, 0, 0,
                            loaded.getWidth(), loaded.getHeight(),
                            rotateMatrix, false);

                    overlay = resize(overlay,rotatedBitmap.getWidth(), rotatedBitmap.getHeight());


                    merged = MergeBitmap(rotatedBitmap, overlay, overlayX, overlayY);

                    Intent myIntentA1A2 = new Intent(context, MainActivity.class);

                    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
                    merged.compress(Bitmap.CompressFormat.PNG, 100, byteArrayOutputStream);
                    byte[] byteArray = byteArrayOutputStream .toByteArray();
                    String encoded = Base64.encodeToString(byteArray, Base64.DEFAULT);
                    //imgDecodableString = BitMapToString(GlobalResource.glass);
                    myIntentA1A2.putExtra("Image", encoded);

                    context.startActivity(myIntentA1A2);