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 import android.util.Log; 20 21 /** 22 * Intrinsic for applying a 5x5 convolve to an allocation. 23 * 24 **/ 25 public final class ScriptIntrinsicConvolve5x5 extends ScriptIntrinsic { 26 private final float[] mValues = new float[25]; 27 private Allocation mInput; 28 ScriptIntrinsicConvolve5x5(int id, RenderScript rs)29 private ScriptIntrinsicConvolve5x5(int id, RenderScript rs) { 30 super(id, rs); 31 } 32 33 /** 34 * Supported elements types are {@link Element#U8}, {@link 35 * Element#U8_2}, {@link Element#U8_3}, {@link Element#U8_4}, 36 * {@link Element#F32}, {@link Element#F32_2}, {@link 37 * Element#F32_3}, and {@link Element#F32_4} 38 * 39 * The default coefficients are. 40 * <code> 41 * <p> [ 0, 0, 0, 0, 0 ] 42 * <p> [ 0, 0, 0, 0, 0 ] 43 * <p> [ 0, 0, 1, 0, 0 ] 44 * <p> [ 0, 0, 0, 0, 0 ] 45 * <p> [ 0, 0, 0, 0, 0 ] 46 * </code> 47 * 48 * @param rs The RenderScript context 49 * @param e Element type for intputs and outputs 50 * 51 * @return ScriptIntrinsicConvolve5x5 52 */ create(RenderScript rs, Element e)53 public static ScriptIntrinsicConvolve5x5 create(RenderScript rs, Element e) { 54 if (!e.isCompatible(Element.U8(rs)) && 55 !e.isCompatible(Element.U8_2(rs)) && 56 !e.isCompatible(Element.U8_3(rs)) && 57 !e.isCompatible(Element.U8_4(rs)) && 58 !e.isCompatible(Element.F32(rs)) && 59 !e.isCompatible(Element.F32_2(rs)) && 60 !e.isCompatible(Element.F32_3(rs)) && 61 !e.isCompatible(Element.F32_4(rs))) { 62 throw new RSIllegalArgumentException("Unsuported element type."); 63 } 64 65 int id = rs.nScriptIntrinsicCreate(4, e.getID(rs)); 66 return new ScriptIntrinsicConvolve5x5(id, rs); 67 68 } 69 70 /** 71 * Set the input of the blur. 72 * Must match the element type supplied during create. 73 * 74 * @param ain The input allocation. 75 */ setInput(Allocation ain)76 public void setInput(Allocation ain) { 77 mInput = ain; 78 setVar(1, ain); 79 } 80 81 /** 82 * Set the coefficients for the convolve. 83 * 84 * The convolve layout is 85 * <code> 86 * <p> [ 0, 1, 2, 3, 4 ] 87 * <p> [ 5, 6, 7, 8, 9 ] 88 * <p> [ 10, 11, 12, 13, 14 ] 89 * <p> [ 15, 16, 17, 18, 19 ] 90 * <p> [ 20, 21, 22, 23, 24 ] 91 * </code> 92 * 93 * @param v The array of coefficients to set 94 */ setCoefficients(float v[])95 public void setCoefficients(float v[]) { 96 FieldPacker fp = new FieldPacker(25*4); 97 for (int ct=0; ct < mValues.length; ct++) { 98 mValues[ct] = v[ct]; 99 fp.addF32(mValues[ct]); 100 } 101 setVar(0, fp); 102 } 103 104 /** 105 * Apply the filter to the input and save to the specified 106 * allocation. 107 * 108 * @param aout Output allocation. Must match creation element 109 * type. 110 */ forEach(Allocation aout)111 public void forEach(Allocation aout) { 112 forEach(0, null, aout, null); 113 } 114 115 /** 116 * Get a KernelID for this intrinsic kernel. 117 * 118 * @return Script.KernelID The KernelID object. 119 */ getKernelID()120 public Script.KernelID getKernelID() { 121 return createKernelID(0, 2, null, null); 122 } 123 124 /** 125 * Get a FieldID for the input field of this intrinsic. 126 * 127 * @return Script.FieldID The FieldID object. 128 */ getFieldID_Input()129 public Script.FieldID getFieldID_Input() { 130 return createFieldID(1, null); 131 } 132 } 133 134