1 /*
2  * Copyright (C) 2014 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 package android.uirendering.cts.bitmapverifiers;
17 
18 import android.graphics.Bitmap;
19 import android.graphics.Color;
20 
21 /**
22  * Checks to see if a Bitmap follows the algorithm provided by the verifier
23  */
24 public abstract class BitmapVerifier {
25     protected static final int PASS_COLOR = Color.WHITE;
26     protected static final int FAIL_COLOR = Color.RED;
27 
28     protected Bitmap mDifferenceBitmap;
29 
30     /**
31      * This will test if the bitmap is good or not.
32      */
verify(int[] bitmap, int offset, int stride, int width, int height)33     public abstract boolean verify(int[] bitmap, int offset, int stride, int width, int height);
34 
35     /**
36      * This calculates the position in an array that would represent a bitmap given the parameters.
37      */
indexFromXAndY(int x, int y, int stride, int offset)38     protected static int indexFromXAndY(int x, int y, int stride, int offset) {
39         return x + (y * stride) + offset;
40     }
41 
getDifferenceBitmap()42     public Bitmap getDifferenceBitmap() {
43         return mDifferenceBitmap;
44     }
45 }
46