/* * Copyright (C) 2012 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package android.support.v8.renderscript; import android.util.Log; /** * Intrinsic for applying a 3x3 convolve to an allocation. * **/ public final class ScriptIntrinsicConvolve3x3 extends ScriptIntrinsic { private final float[] mValues = new float[9]; private Allocation mInput; private ScriptIntrinsicConvolve3x3(int id, RenderScript rs) { super(id, rs); } /** * Supported elements types are {@link Element#U8_4} * * The default coefficients are. * * *

[ 0, 0, 0 ] *

[ 0, 1, 0 ] *

[ 0, 0, 0 ] * * * @param rs The Renderscript context * @param e Element type for intputs and outputs * * @return ScriptIntrinsicConvolve3x3 */ public static ScriptIntrinsicConvolve3x3 create(RenderScript rs, Element e) { float f[] = { 0, 0, 0, 0, 1, 0, 0, 0, 0}; if (e != Element.U8_4(rs)) { throw new RSIllegalArgumentException("Unsuported element type."); } int id = rs.nScriptIntrinsicCreate(1, e.getID(rs)); ScriptIntrinsicConvolve3x3 si = new ScriptIntrinsicConvolve3x3(id, rs); si.setCoefficients(f); return si; } /** * Set the input of the blur. * Must match the element type supplied during create. * * @param ain The input allocation. */ public void setInput(Allocation ain) { mInput = ain; bindAllocation(ain, 1); } /** * Set the coefficients for the convolve. * * The convolve layout is * *

[ 0, 1, 2 ] *

[ 3, 4, 5 ] *

[ 6, 7, 8 ] * * * @param v The array of coefficients to set */ public void setCoefficients(float v[]) { FieldPacker fp = new FieldPacker(9*4); for (int ct=0; ct < mValues.length; ct++) { mValues[ct] = v[ct]; fp.addF32(mValues[ct]); } setVar(0, fp); } /** * Apply the filter to the input and save to the specified * allocation. * * @param aout Output allocation. Must match creation element * type. */ public void forEach(Allocation aout) { forEach(0, null, aout, null); } /** * Get a KernelID for this intrinsic kernel. * * @return Script.KernelID The KernelID object. */ public Script.KernelID getKernelID() { return createKernelID(0, 2, null, null); } /** * Get a FieldID for the input field of this intrinsic. * * @return Script.FieldID The FieldID object. */ public Script.FieldID getFieldID_Input() { return createFieldID(1, null); } }