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https://github.com/RGBCube/serenity
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d2510d0caa
Now that we have y-axis (gain) logarithmic display, we should also have x-axis (frequency) logarithmic display; that's how our ears work. This can be turned off with an option, but it generally looks much nicer.
42 lines
1.2 KiB
C++
42 lines
1.2 KiB
C++
/*
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* Copyright (c) 2021, Cesar Torres <shortanemoia@protonmail.com>
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include "VisualizationWidget.h"
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#include <AK/Array.h>
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#include <AK/Complex.h>
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#include <AK/FixedArray.h>
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#include <LibAudio/Buffer.h>
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#include <LibGUI/Frame.h>
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class BarsVisualizationWidget final : public VisualizationWidget {
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C_OBJECT(BarsVisualizationWidget)
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public:
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~BarsVisualizationWidget() override = default;
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private:
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BarsVisualizationWidget();
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void render(GUI::PaintEvent&, FixedArray<double> const&) override;
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void context_menu_event(GUI::ContextMenuEvent& event) override;
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static constexpr size_t fft_size = 512;
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static constexpr size_t bar_count = 64;
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// Things become weird near the Nyquist limit. Just don't use that FFT data.
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static constexpr size_t cutoff = fft_size - 32;
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Array<Complex<double>, fft_size> m_fft_samples {};
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Array<double, fft_size> m_fft_window {};
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Array<double, fft_size / 2> m_previous_samples {};
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Array<int, bar_count> m_gfx_falling_bars {};
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bool m_is_using_last;
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bool m_adjust_frequencies;
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bool m_logarithmic_spectrum;
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RefPtr<GUI::Menu> m_context_menu;
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};
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