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