83 lines
2.6 KiB
C
83 lines
2.6 KiB
C
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/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2017 - ROLI Ltd.
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JUCE is an open source library subject to commercial or open-source
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licensing.
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By using JUCE, you agree to the terms of both the JUCE 5 End-User License
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Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
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27th April 2017).
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End User License Agreement: www.juce.com/juce-5-licence
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Privacy Policy: www.juce.com/juce-5-privacy-policy
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Or: You may also use this code under the terms of the GPL v3 (see
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www.gnu.org/licenses).
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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namespace dsp
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{
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/**
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A class which provides multiple windowing functions useful for filter design
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and spectrum analyzers
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@tags{DSP}
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*/
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template <typename FloatType>
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struct WindowingFunction
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{
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enum WindowingMethod
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{
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rectangular = 0,
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triangular,
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hann,
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hamming,
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blackman,
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blackmanHarris,
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flatTop,
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kaiser,
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numWindowingMethods
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};
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//==============================================================================
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WindowingFunction (size_t size, WindowingMethod,
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bool normalize = true, FloatType beta = 0);
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//==============================================================================
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/** Fills the content of an array with a given windowing method table */
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void fillWindowingTables (size_t size, WindowingMethod type,
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bool normalize = true, FloatType beta = 0) noexcept;
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/** Fills the content of an array with a given windowing method table */
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static void fillWindowingTables (FloatType* samples, size_t size, WindowingMethod,
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bool normalize = true, FloatType beta = 0) noexcept;
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/** Multiply the content of a buffer with the given window */
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void multiplyWithWindowingTable (FloatType* samples, size_t size) noexcept;
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/** Returns the name of a given windowing method */
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static const char* getWindowingMethodName (WindowingMethod) noexcept;
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private:
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//==============================================================================
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Array<FloatType> windowTable;
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (WindowingFunction)
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};
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} // namespace dsp
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} // namespace juce
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