1 /*
2 * Copyright (C) 2017 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 #include <iostream>
18
19 #include <gtest/gtest.h>
20
21 #include "utility/AAudioUtilities.h"
22 #include "utility/LinearRamp.h"
23
24
TEST(test_linear_ramp,linear_ramp_segments)25 TEST(test_linear_ramp, linear_ramp_segments) {
26 LinearRamp ramp;
27 const float source[4] = {1.0f, 1.0f, 1.0f, 1.0f };
28 float destination[4] = {1.0f, 1.0f, 1.0f, 1.0f };
29
30 float levelFrom = -1.0f;
31 float levelTo = -1.0f;
32 ramp.setLengthInFrames(8);
33 ramp.setTarget(8.0f);
34
35 ASSERT_EQ(8, ramp.getLengthInFrames());
36
37 bool ramping = ramp.nextSegment(4, &levelFrom, &levelTo);
38 ASSERT_EQ(1, ramping);
39 ASSERT_EQ(0.0f, levelFrom);
40 ASSERT_EQ(4.0f, levelTo);
41
42 AAudio_linearRamp(source, destination, 4, 1, levelFrom, levelTo);
43 ASSERT_EQ(0.0f, destination[0]);
44 ASSERT_EQ(1.0f, destination[1]);
45 ASSERT_EQ(2.0f, destination[2]);
46 ASSERT_EQ(3.0f, destination[3]);
47
48 ramping = ramp.nextSegment(4, &levelFrom, &levelTo);
49 ASSERT_EQ(1, ramping);
50 ASSERT_EQ(4.0f, levelFrom);
51 ASSERT_EQ(8.0f, levelTo);
52
53 AAudio_linearRamp(source, destination, 4, 1, levelFrom, levelTo);
54 ASSERT_EQ(4.0f, destination[0]);
55 ASSERT_EQ(5.0f, destination[1]);
56 ASSERT_EQ(6.0f, destination[2]);
57 ASSERT_EQ(7.0f, destination[3]);
58
59 ramping = ramp.nextSegment(4, &levelFrom, &levelTo);
60 ASSERT_EQ(0, ramping);
61 ASSERT_EQ(8.0f, levelFrom);
62 ASSERT_EQ(8.0f, levelTo);
63
64 AAudio_linearRamp(source, destination, 4, 1, levelFrom, levelTo);
65 ASSERT_EQ(8.0f, destination[0]);
66 ASSERT_EQ(8.0f, destination[1]);
67 ASSERT_EQ(8.0f, destination[2]);
68 ASSERT_EQ(8.0f, destination[3]);
69
70 };
71
72
TEST(test_linear_ramp,linear_ramp_forced)73 TEST(test_linear_ramp, linear_ramp_forced) {
74 LinearRamp ramp;
75 const float source[4] = {1.0f, 1.0f, 1.0f, 1.0f };
76 float destination[4] = {1.0f, 1.0f, 1.0f, 1.0f };
77
78 float levelFrom = -1.0f;
79 float levelTo = -1.0f;
80 ramp.setLengthInFrames(4);
81 ramp.setTarget(8.0f);
82 ramp.forceCurrent(4.0f);
83 ASSERT_EQ(4.0f, ramp.getCurrent());
84
85 bool ramping = ramp.nextSegment(4, &levelFrom, &levelTo);
86 ASSERT_EQ(1, ramping);
87 ASSERT_EQ(4.0f, levelFrom);
88 ASSERT_EQ(8.0f, levelTo);
89
90 AAudio_linearRamp(source, destination, 4, 1, levelFrom, levelTo);
91 ASSERT_EQ(4.0f, destination[0]);
92 ASSERT_EQ(5.0f, destination[1]);
93 ASSERT_EQ(6.0f, destination[2]);
94 ASSERT_EQ(7.0f, destination[3]);
95
96 ramping = ramp.nextSegment(4, &levelFrom, &levelTo);
97 ASSERT_EQ(0, ramping);
98 ASSERT_EQ(8.0f, levelFrom);
99 ASSERT_EQ(8.0f, levelTo);
100
101 AAudio_linearRamp(source, destination, 4, 1, levelFrom, levelTo);
102 ASSERT_EQ(8.0f, destination[0]);
103 ASSERT_EQ(8.0f, destination[1]);
104 ASSERT_EQ(8.0f, destination[2]);
105 ASSERT_EQ(8.0f, destination[3]);
106
107 };
108
109