1 /* 2 * Copyright (C) 2012 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.app.Activity; 20 import android.graphics.Bitmap; 21 import android.graphics.Matrix; 22 import android.renderscript.Allocation; 23 import android.widget.Toast; 24 25 import com.android.gallery3d.filtershow.imageshow.GeometryMathUtils; 26 import com.android.gallery3d.filtershow.imageshow.MasterImage; 27 import com.android.gallery3d.filtershow.pipeline.FilterEnvironment; 28 29 public abstract class ImageFilter implements Cloneable { 30 private FilterEnvironment mEnvironment = null; 31 32 protected String mName = "Original"; 33 private final String LOGTAG = "ImageFilter"; 34 protected static final boolean SIMPLE_ICONS = true; 35 // TODO: Temporary, for dogfood note memory issues with toasts for better 36 // feedback. Remove this when filters actually work in low memory 37 // situations. 38 private static Activity sActivity = null; 39 setActivityForMemoryToasts(Activity activity)40 public static void setActivityForMemoryToasts(Activity activity) { 41 sActivity = activity; 42 } 43 resetStatics()44 public static void resetStatics() { 45 sActivity = null; 46 } 47 freeResources()48 public void freeResources() {} 49 displayLowMemoryToast()50 public void displayLowMemoryToast() { 51 if (sActivity != null) { 52 sActivity.runOnUiThread(new Runnable() { 53 public void run() { 54 Toast.makeText(sActivity, "Memory too low for filter " + getName() + 55 ", please file a bug report", Toast.LENGTH_SHORT).show(); 56 } 57 }); 58 } 59 } 60 setName(String name)61 public void setName(String name) { 62 mName = name; 63 } 64 getName()65 public String getName() { 66 return mName; 67 } 68 supportsAllocationInput()69 public boolean supportsAllocationInput() { return false; } 70 apply(Allocation in, Allocation out)71 public void apply(Allocation in, Allocation out) { 72 setGeneralParameters(); 73 } 74 apply(Bitmap bitmap, float scaleFactor, int quality)75 public Bitmap apply(Bitmap bitmap, float scaleFactor, int quality) { 76 // do nothing here, subclasses will implement filtering here 77 setGeneralParameters(); 78 return bitmap; 79 } 80 useRepresentation(FilterRepresentation representation)81 public abstract void useRepresentation(FilterRepresentation representation); 82 nativeApplyGradientFilter(Bitmap bitmap, int w, int h, int[] redGradient, int[] greenGradient, int[] blueGradient)83 native protected void nativeApplyGradientFilter(Bitmap bitmap, int w, int h, 84 int[] redGradient, int[] greenGradient, int[] blueGradient); 85 getDefaultRepresentation()86 public FilterRepresentation getDefaultRepresentation() { 87 return null; 88 } 89 getOriginalToScreenMatrix(int w, int h)90 protected Matrix getOriginalToScreenMatrix(int w, int h) { 91 return GeometryMathUtils.getImageToScreenMatrix(getEnvironment().getImagePreset() 92 .getGeometryFilters(), true, MasterImage.getImage().getOriginalBounds(), w, h); 93 } 94 setEnvironment(FilterEnvironment environment)95 public void setEnvironment(FilterEnvironment environment) { 96 mEnvironment = environment; 97 } 98 getEnvironment()99 public FilterEnvironment getEnvironment() { 100 return mEnvironment; 101 } 102 setGeneralParameters()103 public void setGeneralParameters() { 104 // should implement in subclass which like to transport 105 // some information to other filters. (like the style setting from RetroLux 106 // and Film to FixedFrame) 107 mEnvironment.clearGeneralParameters(); 108 } 109 } 110