test_linear_ramp.cpp revision e572f469de5dca1078a79d3d80e5b04f96ae7505 
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
25TEST(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
73TEST(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