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      1 /*
      2  * Copyright (C) 2010 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.camera.unittest;
     18 
     19 import com.android.camera.util.CameraUtil;
     20 
     21 import android.graphics.Matrix;
     22 import android.test.suitebuilder.annotation.SmallTest;
     23 
     24 import junit.framework.TestCase;
     25 
     26 @SmallTest
     27 public class CameraUnitTest extends TestCase {
     28     public void testRoundOrientation() {
     29         int h = CameraUtil.ORIENTATION_HYSTERESIS;
     30         assertEquals(0, CameraUtil.roundOrientation(0, 0));
     31         assertEquals(0, CameraUtil.roundOrientation(359, 0));
     32         assertEquals(0, CameraUtil.roundOrientation(0 + 44 + h, 0));
     33         assertEquals(90, CameraUtil.roundOrientation(0 + 45 + h, 0));
     34         assertEquals(0, CameraUtil.roundOrientation(360 - 44 - h, 0));
     35         assertEquals(270, CameraUtil.roundOrientation(360 - 45 - h, 0));
     36 
     37         assertEquals(90, CameraUtil.roundOrientation(90, 90));
     38         assertEquals(90, CameraUtil.roundOrientation(90 + 44 + h, 90));
     39         assertEquals(180, CameraUtil.roundOrientation(90 + 45 + h, 90));
     40         assertEquals(90, CameraUtil.roundOrientation(90 - 44 - h, 90));
     41         assertEquals(0, CameraUtil.roundOrientation(90 - 45 - h, 90));
     42 
     43         assertEquals(180, CameraUtil.roundOrientation(180, 180));
     44         assertEquals(180, CameraUtil.roundOrientation(180 + 44 + h, 180));
     45         assertEquals(270, CameraUtil.roundOrientation(180 + 45 + h, 180));
     46         assertEquals(180, CameraUtil.roundOrientation(180 - 44 - h, 180));
     47         assertEquals(90, CameraUtil.roundOrientation(180 - 45 - h, 180));
     48 
     49         assertEquals(270, CameraUtil.roundOrientation(270, 270));
     50         assertEquals(270, CameraUtil.roundOrientation(270 + 44 + h, 270));
     51         assertEquals(0, CameraUtil.roundOrientation(270 + 45 + h, 270));
     52         assertEquals(270, CameraUtil.roundOrientation(270 - 44 - h, 270));
     53         assertEquals(180, CameraUtil.roundOrientation(270 - 45 - h, 270));
     54 
     55         assertEquals(90, CameraUtil.roundOrientation(90, 0));
     56         assertEquals(180, CameraUtil.roundOrientation(180, 0));
     57         assertEquals(270, CameraUtil.roundOrientation(270, 0));
     58 
     59         assertEquals(0, CameraUtil.roundOrientation(0, 90));
     60         assertEquals(180, CameraUtil.roundOrientation(180, 90));
     61         assertEquals(270, CameraUtil.roundOrientation(270, 90));
     62 
     63         assertEquals(0, CameraUtil.roundOrientation(0, 180));
     64         assertEquals(90, CameraUtil.roundOrientation(90, 180));
     65         assertEquals(270, CameraUtil.roundOrientation(270, 180));
     66 
     67         assertEquals(0, CameraUtil.roundOrientation(0, 270));
     68         assertEquals(90, CameraUtil.roundOrientation(90, 270));
     69         assertEquals(180, CameraUtil.roundOrientation(180, 270));
     70     }
     71 
     72     public void testPrepareMatrix() {
     73         Matrix matrix = new Matrix();
     74         float[] points;
     75         int[] expected;
     76 
     77         CameraUtil.prepareMatrix(matrix, false, 0, 800, 480);
     78         points = new float[] {-1000, -1000, 0, 0, 1000, 1000, 0, 1000, -750, 250};
     79         expected = new int[] {0, 0, 400, 240, 800, 480, 400, 480, 100, 300};
     80         matrix.mapPoints(points);
     81         assertEquals(expected, points);
     82 
     83         CameraUtil.prepareMatrix(matrix, false, 90, 800, 480);
     84         points = new float[] {-1000, -1000,   0,   0, 1000, 1000, 0, 1000, -750, 250};
     85         expected = new int[] {800, 0, 400, 240, 0, 480, 0, 240, 300, 60};
     86         matrix.mapPoints(points);
     87         assertEquals(expected, points);
     88 
     89         CameraUtil.prepareMatrix(matrix, false, 180, 800, 480);
     90         points = new float[] {-1000, -1000, 0, 0, 1000, 1000, 0, 1000, -750, 250};
     91         expected = new int[] {800, 480, 400, 240, 0, 0, 400, 0, 700, 180};
     92         matrix.mapPoints(points);
     93         assertEquals(expected, points);
     94 
     95         CameraUtil.prepareMatrix(matrix, true, 180, 800, 480);
     96         points = new float[] {-1000, -1000, 0, 0, 1000, 1000, 0, 1000, -750, 250};
     97         expected = new int[] {0, 480, 400, 240, 800, 0, 400, 0, 100, 180};
     98         matrix.mapPoints(points);
     99         assertEquals(expected, points);
    100     }
    101 
    102     private void assertEquals(int expected[], float[] actual) {
    103         for (int i = 0; i < expected.length; i++) {
    104             assertEquals("Array index " + i + " mismatch", expected[i], Math.round(actual[i]));
    105         }
    106     }
    107 }
    108