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.content.res.Resources; 20 import android.graphics.Bitmap; 21 import android.graphics.BitmapFactory; 22 import com.android.gallery3d.app.Log; 23 24 public class ImageFilterFx extends ImageFilter { 25 private static final String LOGTAG = "ImageFilterFx"; 26 private FilterFxRepresentation mParameters = null; 27 private Bitmap mFxBitmap = null; 28 private Resources mResources = null; 29 private int mFxBitmapId = 0; 30 31 public ImageFilterFx() { 32 } 33 34 @Override 35 public void freeResources() { 36 if (mFxBitmap != null) mFxBitmap.recycle(); 37 mFxBitmap = null; 38 } 39 40 public void useRepresentation(FilterRepresentation representation) { 41 FilterFxRepresentation parameters = (FilterFxRepresentation) representation; 42 mParameters = parameters; 43 } 44 45 public FilterFxRepresentation getParameters() { 46 return mParameters; 47 } 48 49 native protected void nativeApplyFilter(Bitmap bitmap, int w, int h,Bitmap fxBitmap, int fxw, int fxh); 50 51 @Override 52 public Bitmap apply(Bitmap bitmap, float scaleFactor, int quality) { 53 if (getParameters() == null || mResources == null) { 54 return bitmap; 55 } 56 57 int w = bitmap.getWidth(); 58 int h = bitmap.getHeight(); 59 60 int bitmapResourceId = getParameters().getBitmapResource(); 61 if (bitmapResourceId == 0) { // null filter fx 62 return bitmap; 63 } 64 65 if (mFxBitmap == null || mFxBitmapId != bitmapResourceId) { 66 BitmapFactory.Options o = new BitmapFactory.Options(); 67 o.inScaled = false; 68 mFxBitmapId = bitmapResourceId; 69 if (mFxBitmapId != 0) { 70 mFxBitmap = BitmapFactory.decodeResource(mResources, mFxBitmapId, o); 71 } else { 72 Log.w(LOGTAG, "bad resource for filter: " + mName); 73 } 74 } 75 76 if (mFxBitmap == null) { 77 return bitmap; 78 } 79 80 int fxw = mFxBitmap.getWidth(); 81 int fxh = mFxBitmap.getHeight(); 82 83 nativeApplyFilter(bitmap, w, h, mFxBitmap, fxw, fxh); 84 return bitmap; 85 } 86 87 public void setResources(Resources resources) { 88 mResources = resources; 89 } 90 } 91