flipping and save the photo if you take a photo using front camera

savePhotoTask.java

        @Override protected PatientPhoto doInBackground(PatientPhoto... intakePhotos) {
            PatientPhoto photo = intakePhotos[0];
            File file = null;
            if (photo != null) {
                Matrix matrix = flip(new Matrix());

                Bitmap bitmap = BitmapFactory.decodeByteArray(photo.getPhotoBytes(), 0, photo.getPhotoBytes().length);
                Bitmap flipped = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);

                photo.setThumbnail(ThumbnailUtils.extractThumbnail(flipped, 250, 250));

                ByteArrayOutputStream out = new ByteArrayOutputStream();
                flipped.compress(Bitmap.CompressFormat.JPEG, 100, out);
                byte[] flippedByteArray = out.toByteArray();

                file = CameraUtil
                        .createExternalStoragePrivateFile(context, flippedByteArray, photo.getName());

                photo.setFile(file);
                photo.setPhotoBytes(flippedByteArray);

                bitmap.recycle();
            }

            if (file != null) {
                return photo;
            } else {
                return null;
            }
        }

        private Matrix flip(Matrix input) {
            float[] mirrorY = {-1, 0, 0, 0, 1, 0, 0, 0, 1};
            Matrix matrixMirrorY = new Matrix();

            matrixMirrorY.setValues(mirrorY);
            input.postConcat(matrixMirrorY);

            return (input);
        }