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 android.renderscript; 18 19 /** 20 * Intrinsic Gausian blur filter. Applies a gaussian blur of the 21 * specified radius to all elements of an allocation. 22 * 23 * 24 **/ 25 public final class ScriptIntrinsicBlur extends ScriptIntrinsic { 26 private final float[] mValues = new float[9]; 27 private Allocation mInput; 28 ScriptIntrinsicBlur(long id, RenderScript rs)29 private ScriptIntrinsicBlur(long id, RenderScript rs) { 30 super(id, rs); 31 } 32 33 /** 34 * Create an intrinsic for applying a blur to an allocation. The 35 * default radius is 5.0. 36 * 37 * Supported elements types are {@link Element#U8_4 Element#U8} 38 * 39 * @param rs The RenderScript context 40 * @param e Element type for inputs and outputs 41 * 42 * @return ScriptIntrinsicBlur 43 */ create(RenderScript rs, Element e)44 public static ScriptIntrinsicBlur create(RenderScript rs, Element e) { 45 if ((!e.isCompatible(Element.U8_4(rs))) && (!e.isCompatible(Element.U8(rs)))) { 46 throw new RSIllegalArgumentException("Unsuported element type."); 47 } 48 long id = rs.nScriptIntrinsicCreate(5, e.getID(rs)); 49 ScriptIntrinsicBlur sib = new ScriptIntrinsicBlur(id, rs); 50 sib.setRadius(5.f); 51 return sib; 52 } 53 54 /** 55 * Set the input of the blur. 56 * Must match the element type supplied during create. 57 * 58 * @param ain The input allocation 59 */ setInput(Allocation ain)60 public void setInput(Allocation ain) { 61 mInput = ain; 62 setVar(1, ain); 63 } 64 65 /** 66 * Set the radius of the Blur. 67 * 68 * Supported range 0 < radius <= 25 69 * 70 * @param radius The radius of the blur 71 */ setRadius(float radius)72 public void setRadius(float radius) { 73 if (radius <= 0 || radius > 25) { 74 throw new RSIllegalArgumentException("Radius out of range (0 < r <= 25)."); 75 } 76 setVar(0, radius); 77 } 78 79 /** 80 * Apply the filter to the input and save to the specified 81 * allocation. 82 * 83 * @param aout Output allocation. Must match creation element 84 * type. 85 */ forEach(Allocation aout)86 public void forEach(Allocation aout) { 87 forEach(0, (Allocation) null, aout, null); 88 } 89 90 /** 91 * Apply the filter to the input and save to the specified 92 * allocation. 93 * 94 * @param aout Output allocation. Must match creation element 95 * type. 96 * @param opt LaunchOptions for clipping 97 */ forEach(Allocation aout, Script.LaunchOptions opt)98 public void forEach(Allocation aout, Script.LaunchOptions opt) { 99 forEach(0, (Allocation) null, aout, null, opt); 100 } 101 102 103 /** 104 * Get a KernelID for this intrinsic kernel. 105 * 106 * @return Script.KernelID The KernelID object. 107 */ getKernelID()108 public Script.KernelID getKernelID() { 109 return createKernelID(0, 2, null, null); 110 } 111 112 /** 113 * Get a FieldID for the input field of this intrinsic. 114 * 115 * @return Script.FieldID The FieldID object. 116 */ getFieldID_Input()117 public Script.FieldID getFieldID_Input() { 118 return createFieldID(1, null); 119 } 120 } 121