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 17package com.android.gallery3d.filtershow.filters; 18 19import android.graphics.Bitmap; 20import android.graphics.Canvas; 21import android.graphics.Matrix; 22import android.graphics.Paint; 23import android.graphics.Rect; 24import android.graphics.RectF; 25 26import com.android.gallery3d.filtershow.imageshow.GeometryMath; 27import com.android.gallery3d.filtershow.imageshow.GeometryMetadata; 28 29public class ImageFilterGeometry extends ImageFilter { 30 private final Bitmap.Config mConfig = Bitmap.Config.ARGB_8888; 31 private GeometryMetadata mGeometry = null; 32 private static final String LOGTAG = "ImageFilterGeometry"; 33 private static final boolean LOGV = false; 34 private static final int BOTH = 3; 35 private static final int VERTICAL = 2; 36 private static final int HORIZONTAL = 1; 37 private static final int NINETY = 1; 38 private static final int ONE_EIGHTY = 2; 39 private static final int TWO_SEVENTY = 3; 40 41 public ImageFilterGeometry() { 42 mName = "Geometry"; 43 } 44 45 @Override 46 public ImageFilter clone() throws CloneNotSupportedException { 47 ImageFilterGeometry filter = (ImageFilterGeometry) super.clone(); 48 return filter; 49 } 50 51 public void setGeometryMetadata(GeometryMetadata m) { 52 mGeometry = m; 53 } 54 55 native protected void nativeApplyFilterFlip(Bitmap src, int srcWidth, int srcHeight, 56 Bitmap dst, int dstWidth, int dstHeight, int flip); 57 58 native protected void nativeApplyFilterRotate(Bitmap src, int srcWidth, int srcHeight, 59 Bitmap dst, int dstWidth, int dstHeight, int rotate); 60 61 native protected void nativeApplyFilterCrop(Bitmap src, int srcWidth, int srcHeight, 62 Bitmap dst, int dstWidth, int dstHeight, int offsetWidth, int offsetHeight); 63 64 native protected void nativeApplyFilterStraighten(Bitmap src, int srcWidth, int srcHeight, 65 Bitmap dst, int dstWidth, int dstHeight, float straightenAngle); 66 67 @Override 68 public Bitmap apply(Bitmap bitmap, float scaleFactor, boolean highQuality) { 69 // TODO: implement bilinear or bicubic here... for now, just use 70 // canvas to do a simple implementation... 71 // TODO: and be more memory efficient! (do it in native?) 72 Rect cropBounds = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight()); 73 RectF crop = mGeometry.getCropBounds(bitmap); 74 if (crop.width() > 0 && crop.height() > 0) 75 cropBounds = GeometryMath.roundNearest(crop); 76 Bitmap temp = null; 77 if (mGeometry.hasSwitchedWidthHeight()) { 78 temp = Bitmap.createBitmap(cropBounds.height(), cropBounds.width(), mConfig); 79 } else { 80 temp = Bitmap.createBitmap(cropBounds.width(), cropBounds.height(), mConfig); 81 } 82 float[] displayCenter = { 83 temp.getWidth() / 2f, temp.getHeight() / 2f 84 }; 85 86 Matrix m1 = mGeometry.buildTotalXform(bitmap.getWidth(), bitmap.getHeight(), displayCenter); 87 88 Canvas canvas = new Canvas(temp); 89 Paint paint = new Paint(); 90 paint.setAntiAlias(true); 91 paint.setFilterBitmap(true); 92 paint.setDither(true); 93 canvas.drawBitmap(bitmap, m1, paint); 94 return temp; 95 } 96 97} 98