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 android.renderscript; 18 19import android.util.Log; 20 21/** 22 * Intrinsic for applying a 5x5 convolve to an allocation. 23 * 24 **/ 25public final class ScriptIntrinsicConvolve5x5 extends ScriptIntrinsic { 26 private final float[] mValues = new float[25]; 27 private Allocation mInput; 28 29 private ScriptIntrinsicConvolve5x5(int id, RenderScript rs) { 30 super(id, rs); 31 } 32 33 /** 34 * Supported elements types are {@link Element#U8_4} 35 * 36 * The default coefficients are. 37 * <code> 38 * <p> [ 0, 0, 0, 0, 0 ] 39 * <p> [ 0, 0, 0, 0, 0 ] 40 * <p> [ 0, 0, 1, 0, 0 ] 41 * <p> [ 0, 0, 0, 0, 0 ] 42 * <p> [ 0, 0, 0, 0, 0 ] 43 * </code> 44 * 45 * @param rs The Renderscript context 46 * @param e Element type for intputs and outputs 47 * 48 * @return ScriptIntrinsicConvolve5x5 49 */ 50 public static ScriptIntrinsicConvolve5x5 create(RenderScript rs, Element e) { 51 int id = rs.nScriptIntrinsicCreate(4, e.getID(rs)); 52 return new ScriptIntrinsicConvolve5x5(id, rs); 53 54 } 55 56 /** 57 * Set the input of the blur. 58 * Must match the element type supplied during create. 59 * 60 * @param ain The input allocation. 61 */ 62 public void setInput(Allocation ain) { 63 mInput = ain; 64 setVar(1, ain); 65 } 66 67 /** 68 * Set the coefficients for the convolve. 69 * 70 * The convolve layout is 71 * <code> 72 * <p> [ 0, 1, 2, 3, 4 ] 73 * <p> [ 5, 6, 7, 8, 9 ] 74 * <p> [ 10, 11, 12, 13, 14 ] 75 * <p> [ 15, 16, 17, 18, 19 ] 76 * <p> [ 20, 21, 22, 23, 24 ] 77 * </code> 78 * 79 * @param v The array of coefficients to set 80 */ 81 public void setCoefficients(float v[]) { 82 FieldPacker fp = new FieldPacker(25*4); 83 for (int ct=0; ct < mValues.length; ct++) { 84 mValues[ct] = v[ct]; 85 fp.addF32(mValues[ct]); 86 } 87 setVar(0, fp); 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 */ 97 public void forEach(Allocation aout) { 98 forEach(0, null, aout, null); 99 } 100 101 /** 102 * Get a KernelID for this intrinsic kernel. 103 * 104 * @return Script.KernelID The KernelID object. 105 */ 106 public Script.KernelID getKernelID() { 107 return createKernelID(0, 2, null, null); 108 } 109 110 /** 111 * Get a FieldID for the input field of this intrinsic. 112 * 113 * @return Script.FieldID The FieldID object. 114 */ 115 public Script.FieldID getFieldID_Input() { 116 return createFieldID(1, null); 117 } 118} 119 120