Utils_test.cpp revision c416becd966945fca5fa7fb45ac51f84d1d8cd20 
1/*
2 * Copyright 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
17//#define LOG_NDEBUG 0
18#define LOG_TAG "Utils_test"
19
20#include <gtest/gtest.h>
21#include <utils/String8.h>
22#include <utils/Errors.h>
23#include <fcntl.h>
24#include <unistd.h>
25
26#include <media/stagefright/foundation/ADebug.h>
27#include <media/stagefright/foundation/AUtils.h>
28#include <media/stagefright/Utils.h>
29
30namespace android {
31
32class UtilsTest : public ::testing::Test {
33};
34
35TEST_F(UtilsTest, TestFourCC) {
36    ASSERT_EQ(FOURCC('s', 't', 'm' , 'u'), 'stmu');
37}
38
39TEST_F(UtilsTest, TestMathTemplates) {
40    ASSERT_EQ(divRound(-10, -4), 3);
41    ASSERT_EQ(divRound(-11, -4), 3);
42    ASSERT_EQ(divRound(-12, -4), 3);
43    ASSERT_EQ(divRound(-13, -4), 3);
44    ASSERT_EQ(divRound(-14, -4), 4);
45
46    ASSERT_EQ(divRound(10, -4), -3);
47    ASSERT_EQ(divRound(11, -4), -3);
48    ASSERT_EQ(divRound(12, -4), -3);
49    ASSERT_EQ(divRound(13, -4), -3);
50    ASSERT_EQ(divRound(14, -4), -4);
51
52    ASSERT_EQ(divRound(-10, 4), -3);
53    ASSERT_EQ(divRound(-11, 4), -3);
54    ASSERT_EQ(divRound(-12, 4), -3);
55    ASSERT_EQ(divRound(-13, 4), -3);
56    ASSERT_EQ(divRound(-14, 4), -4);
57
58    ASSERT_EQ(divRound(10, 4), 3);
59    ASSERT_EQ(divRound(11, 4), 3);
60    ASSERT_EQ(divRound(12, 4), 3);
61    ASSERT_EQ(divRound(13, 4), 3);
62    ASSERT_EQ(divRound(14, 4), 4);
63
64    ASSERT_EQ(divUp(-11, -4), 3);
65    ASSERT_EQ(divUp(-12, -4), 3);
66    ASSERT_EQ(divUp(-13, -4), 4);
67
68    ASSERT_EQ(divUp(11, -4), -2);
69    ASSERT_EQ(divUp(12, -4), -3);
70    ASSERT_EQ(divUp(13, -4), -3);
71
72    ASSERT_EQ(divUp(-11, 4), -2);
73    ASSERT_EQ(divUp(-12, 4), -3);
74    ASSERT_EQ(divUp(-13, 4), -3);
75
76    ASSERT_EQ(divUp(11, 4), 3);
77    ASSERT_EQ(divUp(12, 4), 3);
78    ASSERT_EQ(divUp(13, 4), 4);
79
80    ASSERT_EQ(abs(5L), 5L);
81    ASSERT_EQ(abs(-25), 25);
82
83    ASSERT_EQ(min(5.6f, 6.0f), 5.6f);
84    ASSERT_EQ(min(6.0f, 5.6f), 5.6f);
85    ASSERT_EQ(min(-4.3, 8.6), -4.3);
86    ASSERT_EQ(min(8.6, -4.3), -4.3);
87
88    ASSERT_EQ(max(5.6f, 6.0f), 6.0f);
89    ASSERT_EQ(max(6.0f, 5.6f), 6.0f);
90    ASSERT_EQ(max(-4.3, 8.6), 8.6);
91    ASSERT_EQ(max(8.6, -4.3), 8.6);
92
93    ASSERT_EQ(periodicError(124, 100), 24);
94    ASSERT_EQ(periodicError(288, 100), 12);
95    ASSERT_EQ(periodicError(-345, 100), 45);
96    ASSERT_EQ(periodicError(-493, 100), 7);
97    ASSERT_EQ(periodicError(-550, 100), 50);
98    ASSERT_EQ(periodicError(-600, 100), 0);
99}
100
101} // namespace android
102