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 com.android.gallery3d.R; 20 import com.android.gallery3d.filtershow.editors.BasicEditor; 21 22 public class ImageFilterSharpen extends ImageFilterRS { 23 private static final String SERIALIZATION_NAME = "SHARPEN"; 24 private static final String LOGTAG = "ImageFilterSharpen"; 25 private ScriptC_convolve3x3 mScript; 26 27 private FilterBasicRepresentation mParameters; 28 29 public ImageFilterSharpen() { 30 mName = "Sharpen"; 31 } 32 33 public FilterRepresentation getDefaultRepresentation() { 34 FilterRepresentation representation = new FilterBasicRepresentation("Sharpen", 0, 0, 100); 35 representation.setSerializationName(SERIALIZATION_NAME); 36 representation.setShowParameterValue(true); 37 representation.setFilterClass(ImageFilterSharpen.class); 38 representation.setTextId(R.string.sharpness); 39 representation.setOverlayId(R.drawable.filtershow_button_colors_sharpen); 40 representation.setEditorId(BasicEditor.ID); 41 representation.setSupportsPartialRendering(true); 42 return representation; 43 } 44 45 public void useRepresentation(FilterRepresentation representation) { 46 FilterBasicRepresentation parameters = (FilterBasicRepresentation) representation; 47 mParameters = parameters; 48 } 49 50 @Override 51 protected void resetAllocations() { 52 // nothing to do 53 } 54 55 @Override 56 public void resetScripts() { 57 if (mScript != null) { 58 mScript.destroy(); 59 mScript = null; 60 } 61 } 62 63 @Override 64 protected void createFilter(android.content.res.Resources res, float scaleFactor, 65 int quality) { 66 if (mScript == null) { 67 mScript = new ScriptC_convolve3x3(getRenderScriptContext(), res, R.raw.convolve3x3); 68 } 69 } 70 71 private void computeKernel() { 72 float scaleFactor = getEnvironment().getScaleFactor(); 73 float p1 = mParameters.getValue() * scaleFactor; 74 float value = p1 / 100.0f; 75 float f[] = new float[9]; 76 float p = value; 77 f[0] = -p; 78 f[1] = -p; 79 f[2] = -p; 80 f[3] = -p; 81 f[4] = 8 * p + 1; 82 f[5] = -p; 83 f[6] = -p; 84 f[7] = -p; 85 f[8] = -p; 86 mScript.set_gCoeffs(f); 87 } 88 89 @Override 90 protected void bindScriptValues() { 91 int w = getInPixelsAllocation().getType().getX(); 92 int h = getInPixelsAllocation().getType().getY(); 93 mScript.set_gWidth(w); 94 mScript.set_gHeight(h); 95 } 96 97 @Override 98 protected void runFilter() { 99 if (mParameters == null) { 100 return; 101 } 102 computeKernel(); 103 mScript.set_gIn(getInPixelsAllocation()); 104 mScript.bind_gPixels(getInPixelsAllocation()); 105 mScript.forEach_root(getInPixelsAllocation(), getOutPixelsAllocation()); 106 } 107 108 } 109