OpenShot Audio Library | OpenShotAudio: juce_Oversampling.h Source File

OpenShot Audio Library | OpenShotAudio 0.3.1

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juce_Oversampling.h
1/*
2 ==============================================================================
3
4 This file is part of the JUCE library.
5 Copyright (c) 2017 - ROLI Ltd.
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 5 End-User License
11 Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
12 27th April 2017).
13
14 End User License Agreement: www.juce.com/juce-5-licence
15 Privacy Policy: www.juce.com/juce-5-privacy-policy
16
17 Or: You may also use this code under the terms of the GPL v3 (see
18 www.gnu.org/licenses).
19
20 JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
21 EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
22 DISCLAIMED.
23
24 ==============================================================================
25*/
26
27namespace juce
28{
29namespace dsp
30{
31
32//==============================================================================
56template <typename SampleType>
57 class JUCE_API Oversampling
58{
59public:
61 enum FilterType
62 {
63 filterHalfBandFIREquiripple = 0,
64 filterHalfBandPolyphaseIIR,
65 numFilterTypes
66 };
67
68 //==============================================================================
81 Oversampling (size_t numChannels,
82 size_t factor,
83 FilterType type,
84 bool isMaxQuality = true);
85
94 explicit Oversampling (size_t numChannels = 1);
95
97 ~Oversampling();
98
99 //==============================================================================
108 SampleType getLatencyInSamples() noexcept;
109
111 size_t getOversamplingFactor() noexcept;
112
113 //==============================================================================
117 void initProcessing (size_t maximumNumberOfSamplesBeforeOversampling);
118
120 void reset() noexcept;
121
129 AudioBlock<SampleType> processSamplesUp (const AudioBlock<const SampleType>& inputBlock) noexcept;
130
136 void processSamplesDown (AudioBlock<SampleType>& outputBlock) noexcept;
137
138 //==============================================================================
162 void addOversamplingStage (FilterType,
163 float normalisedTransitionWidthUp, float stopbandAmplitudedBUp,
164 float normalisedTransitionWidthDown, float stopbandAmplitudedBDown);
165
173 void addDummyOversamplingStage();
174
180 void clearOversamplingStages();
181
182 //==============================================================================
183 size_t factorOversampling = 1;
184 size_t numChannels = 1;
185
186 #ifndef DOXYGEN
187 struct OversamplingStage;
188 #endif
189
190private:
191 //==============================================================================
192 OwnedArray<OversamplingStage> stages;
193 bool isReady = false;
194
195 //==============================================================================
196 JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (Oversampling)
197};
198
199} // namespace dsp
200} // namespace juce
juce::OwnedArray
Definition: juce_OwnedArray.h:51
juce::dsp::AudioBlock
Definition: juce_AudioBlock.h:65
juce::dsp::Oversampling
Definition: juce_Oversampling.h:58
juce::dsp::Oversampling::FilterType
FilterType
Definition: juce_Oversampling.h:62