1 /*
2  * Copyright (C) 2011 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.example.android.rs.hellocompute;
18 
19 import android.app.Activity;
20 import android.os.Bundle;
21 import android.graphics.BitmapFactory;
22 import android.graphics.Bitmap;
23 import android.renderscript.RenderScript;
24 import android.renderscript.Allocation;
25 import android.widget.ImageView;
26 
27 public class HelloCompute extends Activity {
28     private Bitmap mBitmapIn;
29     private Bitmap mBitmapOut;
30 
31     private RenderScript mRS;
32     private Allocation mInAllocation;
33     private Allocation mOutAllocation;
34     private ScriptC_mono mScript;
35 
36     @Override
onCreate(Bundle savedInstanceState)37     protected void onCreate(Bundle savedInstanceState) {
38         super.onCreate(savedInstanceState);
39         setContentView(R.layout.main);
40 
41         mBitmapIn = loadBitmap(R.drawable.data);
42         mBitmapOut = Bitmap.createBitmap(mBitmapIn.getWidth(), mBitmapIn.getHeight(),
43                                          mBitmapIn.getConfig());
44 
45         ImageView in = (ImageView) findViewById(R.id.displayin);
46         in.setImageBitmap(mBitmapIn);
47 
48         ImageView out = (ImageView) findViewById(R.id.displayout);
49         out.setImageBitmap(mBitmapOut);
50 
51         createScript();
52     }
53 
54 
createScript()55     private void createScript() {
56         mRS = RenderScript.create(this);
57 
58         mInAllocation = Allocation.createFromBitmap(mRS, mBitmapIn,
59                                                     Allocation.MipmapControl.MIPMAP_NONE,
60                                                     Allocation.USAGE_SCRIPT);
61         mOutAllocation = Allocation.createFromBitmap(mRS, mBitmapOut,
62                                                      Allocation.MipmapControl.MIPMAP_NONE,
63                                                      Allocation.USAGE_SCRIPT);
64 
65         mScript = new ScriptC_mono(mRS);
66 
67         mScript.forEach_root(mInAllocation, mOutAllocation);
68         mOutAllocation.copyTo(mBitmapOut);
69     }
70 
loadBitmap(int resource)71     private Bitmap loadBitmap(int resource) {
72         final BitmapFactory.Options options = new BitmapFactory.Options();
73         options.inPreferredConfig = Bitmap.Config.ARGB_8888;
74         return BitmapFactory.decodeResource(getResources(), resource, options);
75     }
76 }
77