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
17package com.android.contacts.common.util;
18
19import android.graphics.Bitmap;
20import android.test.AndroidTestCase;
21import android.test.suitebuilder.annotation.SmallTest;
22
23import com.android.contacts.common.util.BitmapUtil;
24
25import java.io.ByteArrayOutputStream;
26import java.io.IOException;
27
28/**
29 * Tests for {@link com.android.contacts.common.util.BitmapUtil}.
30 */
31@SmallTest
32public class BitmapUtilTests extends AndroidTestCase {
33    public void testGetSmallerExtentFromBytes1() throws Exception {
34        assertEquals(100, BitmapUtil.getSmallerExtentFromBytes(createJpegRawData(100, 100)));
35        assertEquals(100, BitmapUtil.getSmallerExtentFromBytes(createPngRawData(100, 100)));
36    }
37
38    public void testGetSmallerExtentFromBytes2() throws Exception {
39        assertEquals(50, BitmapUtil.getSmallerExtentFromBytes(createJpegRawData(200, 50)));
40        assertEquals(50, BitmapUtil.getSmallerExtentFromBytes(createPngRawData(200, 50)));
41    }
42
43    public void testGetSmallerExtentFromBytes3() throws Exception {
44        assertEquals(40, BitmapUtil.getSmallerExtentFromBytes(createJpegRawData(40, 150)));
45        assertEquals(40, BitmapUtil.getSmallerExtentFromBytes(createPngRawData(40, 150)));
46    }
47
48    public void testFindOptimalSampleSizeExact() throws Exception {
49        assertEquals(1, BitmapUtil.findOptimalSampleSize(512, 512));
50    }
51
52    public void testFindOptimalSampleSizeBigger() throws Exception {
53        assertEquals(1, BitmapUtil.findOptimalSampleSize(512, 1024));
54    }
55
56    public void testFindOptimalSampleSizeSmaller1() throws Exception {
57        assertEquals(2, BitmapUtil.findOptimalSampleSize(512, 256));
58    }
59
60    public void testFindOptimalSampleSizeSmaller2() throws Exception {
61        assertEquals(2, BitmapUtil.findOptimalSampleSize(512, 230));
62    }
63
64    public void testFindOptimalSampleSizeSmaller3() throws Exception {
65        assertEquals(4, BitmapUtil.findOptimalSampleSize(512, 129));
66    }
67
68    public void testFindOptimalSampleSizeSmaller4() throws Exception {
69        assertEquals(4, BitmapUtil.findOptimalSampleSize(512, 128));
70    }
71
72    public void testFindOptimalSampleSizeUnknownOriginal() throws Exception {
73        assertEquals(1, BitmapUtil.findOptimalSampleSize(-1, 128));
74    }
75
76    public void testFindOptimalSampleSizeUnknownTarget() throws Exception {
77        assertEquals(1, BitmapUtil.findOptimalSampleSize(128, -1));
78    }
79
80    public void testDecodeWithSampleSize1() throws IOException {
81        assertBitmapSize(128, 64, BitmapUtil.decodeBitmapFromBytes(createJpegRawData(128, 64), 1));
82        assertBitmapSize(128, 64, BitmapUtil.decodeBitmapFromBytes(createPngRawData(128, 64), 1));
83    }
84
85    public void testDecodeWithSampleSize2() throws IOException {
86        assertBitmapSize(64, 32, BitmapUtil.decodeBitmapFromBytes(createJpegRawData(128, 64), 2));
87        assertBitmapSize(64, 32, BitmapUtil.decodeBitmapFromBytes(createPngRawData(128, 64), 2));
88    }
89
90    public void testDecodeWithSampleSize2a() throws IOException {
91        assertBitmapSize(25, 20, BitmapUtil.decodeBitmapFromBytes(createJpegRawData(50, 40), 2));
92        assertBitmapSize(25, 20, BitmapUtil.decodeBitmapFromBytes(createPngRawData(50, 40), 2));
93    }
94
95    public void testDecodeWithSampleSize4() throws IOException {
96        assertBitmapSize(32, 16, BitmapUtil.decodeBitmapFromBytes(createJpegRawData(128, 64), 4));
97        assertBitmapSize(32, 16, BitmapUtil.decodeBitmapFromBytes(createPngRawData(128, 64), 4));
98    }
99
100    private void assertBitmapSize(int expectedWidth, int expectedHeight, Bitmap bitmap) {
101        assertEquals(expectedWidth, bitmap.getWidth());
102        assertEquals(expectedHeight, bitmap.getHeight());
103    }
104
105    private byte[] createJpegRawData(int sourceWidth, int sourceHeight) throws IOException {
106        return createRawData(Bitmap.CompressFormat.JPEG, sourceWidth, sourceHeight);
107    }
108
109    private byte[] createPngRawData(int sourceWidth, int sourceHeight) throws IOException {
110        return createRawData(Bitmap.CompressFormat.PNG, sourceWidth, sourceHeight);
111    }
112
113    private byte[] createRawData(Bitmap.CompressFormat format, int sourceWidth,
114            int sourceHeight) throws IOException {
115        // Create a temp bitmap as our source
116        Bitmap b = Bitmap.createBitmap(sourceWidth, sourceHeight, Bitmap.Config.ARGB_8888);
117        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
118        b.compress(format, 50, outputStream);
119        final byte[] data = outputStream.toByteArray();
120        outputStream.close();
121        return data;
122    }
123}
124