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 21 import com.android.gallery3d.R; 22 23 public class ImageFilterHighlights extends SimpleImageFilter { 24 private static final String SERIALIZATION_NAME = "HIGHLIGHTS"; 25 private static final String LOGTAG = "ImageFilterVignette"; 26 27 public ImageFilterHighlights() { 28 mName = "Highlights"; 29 } 30 31 SplineMath mSpline = new SplineMath(5); 32 double[] mHighlightCurve = { 0.0, 0.32, 0.418, 0.476, 0.642 }; 33 34 public FilterRepresentation getDefaultRepresentation() { 35 FilterBasicRepresentation representation = 36 (FilterBasicRepresentation) super.getDefaultRepresentation(); 37 representation.setName("Highlights"); 38 representation.setSerializationName(SERIALIZATION_NAME); 39 representation.setFilterClass(ImageFilterHighlights.class); 40 representation.setTextId(R.string.highlight_recovery); 41 representation.setMinimum(-100); 42 representation.setMaximum(100); 43 representation.setDefaultValue(0); 44 representation.setSupportsPartialRendering(true); 45 return representation; 46 } 47 48 native protected void nativeApplyFilter(Bitmap bitmap, int w, int h, float[] luminanceMap); 49 50 @Override 51 public Bitmap apply(Bitmap bitmap, float scaleFactor, int quality) { 52 if (getParameters() == null) { 53 return bitmap; 54 } 55 float p = getParameters().getValue(); 56 double t = p/100.; 57 for (int i = 0; i < 5; i++) { 58 double x = i / 4.; 59 double y = mHighlightCurve[i] *t+x*(1-t); 60 mSpline.setPoint(i, x, y); 61 } 62 63 float[][] curve = mSpline.calculatetCurve(256); 64 float[] luminanceMap = new float[curve.length]; 65 for (int i = 0; i < luminanceMap.length; i++) { 66 luminanceMap[i] = curve[i][1]; 67 } 68 int w = bitmap.getWidth(); 69 int h = bitmap.getHeight(); 70 71 nativeApplyFilter(bitmap, w, h, luminanceMap); 72 return bitmap; 73 } 74 } 75
