OpenShot Audio Library | OpenShotAudio 0.4.0

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juce_LogRampedValue_test.cpp
1/*
2 ==============================================================================
3
4 This file is part of the JUCE library.
5 Copyright (c) 2022 - Raw Material Software Limited
6
7 JUCE is an open source library subject to commercial or open-source
8 licensing.
9
10 By using JUCE, you agree to the terms of both the JUCE 7 End-User License
11 Agreement and JUCE Privacy Policy.
12
13 End User License Agreement: www.juce.com/juce-7-licence
14 Privacy Policy: www.juce.com/juce-privacy-policy
15
16 Or: You may also use this code under the terms of the GPL v3 (see
17 www.gnu.org/licenses).
18
19 JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
20 EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
21 DISCLAIMED.
22
23 ==============================================================================
24*/
25
26 namespace juce::dsp
27{
28
29 static CommonSmoothedValueTests <LogRampedValue <float>> commonLogRampedValueTests;
30
31 class LogRampedValueTests final : public UnitTest
32{
33 public:
34 LogRampedValueTests()
35 : UnitTest ("LogRampedValueTests", UnitTestCategories::dsp)
36 {}
37
38 void runTest() override
39 {
40 beginTest ("Curve");
41 {
42 Array<double> levels = { -0.12243, -1.21245, -12.2342, -22.4683, -30.0, -61.18753 };
43
44 for (auto level : levels)
45 {
46 Array<Range<double>> ranges = { Range<double> (0.0, 1.0),
47 Range<double> (-2.345, 0.0),
48 Range<double> (-2.63, 3.56),
49 Range<double> (3.3, -0.2) };
50
51 for (auto range : ranges)
52 {
53 LogRampedValue<double> slowStart { range.getStart() } , fastStart { range.getEnd() };
54
55 auto numSamples = 12;
56 slowStart.reset (numSamples);
57 fastStart.reset (numSamples);
58
59 slowStart.setLogParameters (level, true);
60 fastStart.setLogParameters (level, false);
61
62 slowStart.setTargetValue (range.getEnd());
63 fastStart.setTargetValue (range.getStart());
64
65 AudioBuffer<double> results (2, numSamples + 1);
66
67 results.setSample (0, 0, slowStart.getCurrentValue());
68 results.setSample (1, 0, fastStart.getCurrentValue());
69
70 for (int i = 1; i < results.getNumSamples(); ++i)
71 {
72 results.setSample (0, i, slowStart.getNextValue());
73 results.setSample (1, i, fastStart.getNextValue());
74 }
75
76 for (int i = 0; i < results.getNumSamples(); ++i)
77 expectWithinAbsoluteError (results.getSample (0, i),
78 results.getSample (1, results.getNumSamples() - (i + 1)),
79 1.0e-7);
80
81 auto expectedMidpoint = range.getStart() + (range.getLength() * Decibels::decibelsToGain (level));
82 expectWithinAbsoluteError (results.getSample (0, numSamples / 2),
83 expectedMidpoint,
84 1.0e-7);
85 }
86 }
87 }
88 }
89};
90
91 static LogRampedValueTests LogRampedValueTests;
92
93} // namespace juce::dsp
juce::Decibels::decibelsToGain
static Type decibelsToGain(Type decibels, Type minusInfinityDb=Type(defaultMinusInfinitydB))
Definition juce_Decibels.h:42
juce::UnitTest::UnitTest
UnitTest(const String &name, const String &category=String())
Definition juce_UnitTest.cpp:26
juce::UnitTest::beginTest
void beginTest(const String &testName)
Definition juce_UnitTest.cpp:89
juce::UnitTest::expectWithinAbsoluteError
void expectWithinAbsoluteError(ValueType actual, ValueType expected, ValueType maxAbsoluteError, String failureMessage=String())
Definition juce_UnitTest.h:212