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      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 com.android.rs.image2;
     18 
     19 import java.lang.Math;
     20 
     21 import android.support.v8.renderscript.*;
     22 import android.util.Log;
     23 
     24 public class Convolve3x3 extends TestBase {
     25     private ScriptC_convolve3x3 mScript;
     26     private ScriptIntrinsicConvolve3x3 mIntrinsic;
     27 
     28     private int mWidth;
     29     private int mHeight;
     30     private boolean mUseIntrinsic;
     31 
     32     public Convolve3x3(boolean useIntrinsic) {
     33         mUseIntrinsic = useIntrinsic;
     34     }
     35 
     36     private float blend(float v1, float v2, float p) {
     37         return (v2 * p) + (v1 * (1.f-p));
     38     }
     39 
     40     private float[] updateMatrix(float str) {
     41         float f[] = new float[9];
     42         float cf1 = blend(1.f / 9.f, 0.f, str);
     43         float cf2 = blend(1.f / 9.f, -1.f, str);
     44         float cf3 = blend(1.f / 9.f, 5.f, str);
     45         f[0] =  cf1;  f[1] = cf2;   f[2] = cf1;
     46         f[3] =  cf2;  f[4] = cf3;   f[5] = cf2;
     47         f[6] =  cf1;  f[7] = cf2;   f[8] = cf1;
     48         return f;
     49     }
     50 
     51     public void createTest(android.content.res.Resources res) {
     52         mWidth = mInPixelsAllocation.getType().getX();
     53         mHeight = mInPixelsAllocation.getType().getY();
     54 
     55         float f[] = updateMatrix(1.f);
     56         if (mUseIntrinsic) {
     57             mIntrinsic = ScriptIntrinsicConvolve3x3.create(mRS, Element.U8_4(mRS));
     58             mIntrinsic.setCoefficients(f);
     59             mIntrinsic.setInput(mInPixelsAllocation);
     60         } else {
     61             mScript = new ScriptC_convolve3x3(mRS);
     62             mScript.set_gCoeffs(f);
     63             mScript.set_gIn(mInPixelsAllocation);
     64             mScript.set_gWidth(mWidth);
     65             mScript.set_gHeight(mHeight);
     66         }
     67     }
     68 
     69     public void animateBars(float time) {
     70         float f[] = updateMatrix(time % 1.f);
     71         if (mUseIntrinsic) {
     72             mIntrinsic.setCoefficients(f);
     73         } else {
     74             mScript.set_gCoeffs(f);
     75         }
     76     }
     77 
     78     public void runTest() {
     79         if (mUseIntrinsic) {
     80             mIntrinsic.forEach(mOutPixelsAllocation);
     81         } else {
     82             mScript.forEach_root(mOutPixelsAllocation);
     83         }
     84     }
     85 
     86 }
     87