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      1 /*
      2  * Copyright (C) 2013 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.gallery3d.filtershow.filters;
     18 
     19 import android.graphics.Bitmap;
     20 import android.graphics.Matrix;
     21 import android.graphics.RectF;
     22 
     23 import java.util.Vector;
     24 
     25 public class ImageFilterRedEye extends ImageFilter {
     26     private static final String LOGTAG = "ImageFilterRedEye";
     27     FilterRedEyeRepresentation mParameters = new FilterRedEyeRepresentation();
     28 
     29     public ImageFilterRedEye() {
     30         mName = "Red Eye";
     31     }
     32 
     33     @Override
     34     public FilterRepresentation getDefaultRepresentation() {
     35         return new FilterRedEyeRepresentation();
     36     }
     37 
     38     public boolean isNil() {
     39         return mParameters.isNil();
     40     }
     41 
     42     public Vector<FilterPoint> getCandidates() {
     43         return mParameters.getCandidates();
     44     }
     45 
     46     public void clear() {
     47         mParameters.clearCandidates();
     48     }
     49 
     50     native protected void nativeApplyFilter(Bitmap bitmap, int w, int h, short[] matrix);
     51 
     52     @Override
     53     public void useRepresentation(FilterRepresentation representation) {
     54         FilterRedEyeRepresentation parameters = (FilterRedEyeRepresentation) representation;
     55         mParameters = parameters;
     56     }
     57 
     58     @Override
     59     public Bitmap apply(Bitmap bitmap, float scaleFactor, int quality) {
     60         int w = bitmap.getWidth();
     61         int h = bitmap.getHeight();
     62         short[] rect = new short[4];
     63 
     64         int size = mParameters.getNumberOfCandidates();
     65         Matrix originalToScreen = getOriginalToScreenMatrix(w, h);
     66         for (int i = 0; i < size; i++) {
     67             RectF r = new RectF(((RedEyeCandidate) (mParameters.getCandidate(i))).mRect);
     68             originalToScreen.mapRect(r);
     69             if (r.intersect(0, 0, w, h)) {
     70                 rect[0] = (short) r.left;
     71                 rect[1] = (short) r.top;
     72                 rect[2] = (short) r.width();
     73                 rect[3] = (short) r.height();
     74                 nativeApplyFilter(bitmap, w, h, rect);
     75             }
     76         }
     77         return bitmap;
     78     }
     79 }
     80