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 for applying a 3x3 convolve to an allocation. 21 * 22 **/ 23 public final class ScriptIntrinsicConvolve3x3 extends ScriptIntrinsic { 24 private final float[] mValues = new float[9]; 25 private Allocation mInput; 26 27 private ScriptIntrinsicConvolve3x3(long id, RenderScript rs) { 28 super(id, rs); 29 } 30 31 /** 32 * Supported elements types are {@link Element#U8}, {@link 33 * Element#U8_2}, {@link Element#U8_3}, {@link Element#U8_4}, 34 * {@link Element#F32}, {@link Element#F32_2}, {@link 35 * Element#F32_3}, and {@link Element#F32_4}. 36 * 37 * <p> The default coefficients are: 38 * <code> 39 * <p> [ 0, 0, 0 ] 40 * <p> [ 0, 1, 0 ] 41 * <p> [ 0, 0, 0 ] 42 * </code> 43 * 44 * @param rs The RenderScript context 45 * @param e Element type for intputs and outputs 46 * 47 * @return ScriptIntrinsicConvolve3x3 48 */ 49 public static ScriptIntrinsicConvolve3x3 create(RenderScript rs, Element e) { 50 float f[] = { 0, 0, 0, 0, 1, 0, 0, 0, 0}; 51 if (!e.isCompatible(Element.U8(rs)) && 52 !e.isCompatible(Element.U8_2(rs)) && 53 !e.isCompatible(Element.U8_3(rs)) && 54 !e.isCompatible(Element.U8_4(rs)) && 55 !e.isCompatible(Element.F32(rs)) && 56 !e.isCompatible(Element.F32_2(rs)) && 57 !e.isCompatible(Element.F32_3(rs)) && 58 !e.isCompatible(Element.F32_4(rs))) { 59 throw new RSIllegalArgumentException("Unsuported element type."); 60 } 61 long id = rs.nScriptIntrinsicCreate(1, e.getID(rs)); 62 ScriptIntrinsicConvolve3x3 si = new ScriptIntrinsicConvolve3x3(id, rs); 63 si.setCoefficients(f); 64 return si; 65 66 } 67 68 /** 69 * Set the input of the 3x3 convolve. 70 * Must match the element type supplied during create. 71 * 72 * @param ain The input allocation. 73 */ 74 public void setInput(Allocation ain) { 75 mInput = ain; 76 setVar(1, ain); 77 } 78 79 /** 80 * Set the coefficients for the convolve. 81 * 82 * <p> The convolve layout is: 83 * <code> 84 * <p> [ 0, 1, 2 ] 85 * <p> [ 3, 4, 5 ] 86 * <p> [ 6, 7, 8 ] 87 * </code> 88 * 89 * @param v The array of coefficients to set 90 */ 91 public void setCoefficients(float v[]) { 92 FieldPacker fp = new FieldPacker(9*4); 93 for (int ct=0; ct < mValues.length; ct++) { 94 mValues[ct] = v[ct]; 95 fp.addF32(mValues[ct]); 96 } 97 setVar(0, fp); 98 } 99 100 /** 101 * Apply the filter to the input and save to the specified 102 * allocation. 103 * 104 * @param aout Output allocation. Must match creation element 105 * type. 106 */ 107 public void forEach(Allocation aout) { 108 forEach(0, (Allocation) null, aout, null); 109 } 110 111 /** 112 * Apply the filter to the input and save to the specified 113 * allocation. 114 * 115 * @param aout Output allocation. Must match creation element 116 * type. 117 * @param opt LaunchOptions for clipping 118 */ 119 public void forEach(Allocation aout, Script.LaunchOptions opt) { 120 forEach(0, (Allocation) null, aout, null, opt); 121 } 122 123 /** 124 * Get a KernelID for this intrinsic kernel. 125 * 126 * @return Script.KernelID The KernelID object. 127 */ 128 public Script.KernelID getKernelID() { 129 return createKernelID(0, 2, null, null); 130 } 131 132 /** 133 * Get a FieldID for the input field of this intrinsic. 134 * 135 * @return Script.FieldID The FieldID object. 136 */ 137 public Script.FieldID getFieldID_Input() { 138 return createFieldID(1, null); 139 } 140 141 } 142
