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7280ed6312
This has come up several times during code review, so let's just enforce it using a new clang-format 20 option.
85 lines
3.2 KiB
C++
85 lines
3.2 KiB
C++
/*
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* Copyright (c) 2024, Noah Bright <noah.bright.1@gmail.com>
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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 <LibJS/Forward.h>
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#include <LibWeb/Bindings/PlatformObject.h>
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#include <LibWeb/WebAudio/AudioNode.h>
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#include <LibWeb/WebIDL/Buffers.h>
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#include <LibWeb/WebIDL/ExceptionOr.h>
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namespace Web::WebAudio {
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// https://webaudio.github.io/web-audio-api/#AnalyserOptions
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struct AnalyserOptions : AudioNodeOptions {
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unsigned long fft_size { 2048 };
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double max_decibels { -30 };
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double min_decibels { -100 };
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double smoothing_time_constant { 0.8 };
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};
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// https://webaudio.github.io/web-audio-api/#AnalyserNode
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class AnalyserNode : public AudioNode {
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WEB_PLATFORM_OBJECT(AnalyserNode, AudioNode);
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GC_DECLARE_ALLOCATOR(AnalyserNode);
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public:
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virtual ~AnalyserNode() override;
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virtual WebIDL::UnsignedLong number_of_inputs() override { return 1; }
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virtual WebIDL::UnsignedLong number_of_outputs() override { return 1; }
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WebIDL::ExceptionOr<void> get_float_frequency_data(GC::Root<WebIDL::BufferSource> const& array); // Float32Array
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WebIDL::ExceptionOr<void> get_byte_frequency_data(GC::Root<WebIDL::BufferSource> const& array); // Uint8Array
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WebIDL::ExceptionOr<void> get_float_time_domain_data(GC::Root<WebIDL::BufferSource> const& array); // Float32Array
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WebIDL::ExceptionOr<void> get_byte_time_domain_data(GC::Root<WebIDL::BufferSource> const& array); // Uint8Array
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unsigned long fft_size() const { return m_fft_size; }
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unsigned long frequency_bin_count() const { return m_fft_size / 2; }
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double max_decibels() const { return m_max_decibels; }
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double min_decibels() const { return m_min_decibels; }
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double smoothing_time_constant() const { return m_smoothing_time_constant; }
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WebIDL::ExceptionOr<void> set_fft_size(unsigned long);
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WebIDL::ExceptionOr<void> set_max_decibels(double);
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WebIDL::ExceptionOr<void> set_min_decibels(double);
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WebIDL::ExceptionOr<void> set_smoothing_time_constant(double);
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static WebIDL::ExceptionOr<GC::Ref<AnalyserNode>> create(JS::Realm&, GC::Ref<BaseAudioContext>, AnalyserOptions const& = {});
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static WebIDL::ExceptionOr<GC::Ref<AnalyserNode>> construct_impl(JS::Realm&, GC::Ref<BaseAudioContext>, AnalyserOptions const& = {});
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protected:
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AnalyserNode(JS::Realm&, GC::Ref<BaseAudioContext>, AnalyserOptions const& = {});
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virtual void initialize(JS::Realm&) override;
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private:
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unsigned long m_fft_size;
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double m_max_decibels;
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double m_min_decibels;
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double m_smoothing_time_constant;
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// https://webaudio.github.io/web-audio-api/#current-frequency-data
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Vector<f32> current_frequency_data();
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// https://webaudio.github.io/web-audio-api/#current-time-domain-data
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Vector<f32> current_time_domain_data();
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// https://webaudio.github.io/web-audio-api/#blackman-window
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Vector<f32> apply_a_blackman_window(Vector<f32> const& x) const;
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// https://webaudio.github.io/web-audio-api/#smoothing-over-time
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Vector<f32> smoothing_over_time(Vector<f32> const& current_block);
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// https://webaudio.github.io/web-audio-api/#previous-block
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Vector<f32> m_previous_block;
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// https://webaudio.github.io/web-audio-api/#conversion-to-db
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Vector<f32> conversion_to_dB(Vector<f32> const& X_hat) const;
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};
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}
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