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ladybird/Libraries/LibWeb/WebAudio/GainNode.h

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C++

/*
* Copyright (c) 2024, Shannon Booth <shannon@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibWeb/Bindings/GainNodePrototype.h>
#include <LibWeb/WebAudio/AudioNode.h>
namespace Web::WebAudio {
// https://webaudio.github.io/web-audio-api/#GainOptions
struct GainOptions : AudioNodeOptions {
float gain { 1.0 };
};
// https://webaudio.github.io/web-audio-api/#GainNode
class GainNode : public AudioNode {
WEB_PLATFORM_OBJECT(GainNode, AudioNode);
JS_DECLARE_ALLOCATOR(GainNode);
public:
virtual ~GainNode() override;
static WebIDL::ExceptionOr<JS::NonnullGCPtr<GainNode>> create(JS::Realm&, JS::NonnullGCPtr<BaseAudioContext>, GainOptions const& = {});
static WebIDL::ExceptionOr<JS::NonnullGCPtr<GainNode>> construct_impl(JS::Realm&, JS::NonnullGCPtr<BaseAudioContext>, GainOptions const& = {});
WebIDL::UnsignedLong number_of_inputs() override { return 1; }
WebIDL::UnsignedLong number_of_outputs() override { return 1; }
JS::NonnullGCPtr<AudioParam const> gain() const { return m_gain; }
protected:
GainNode(JS::Realm&, JS::NonnullGCPtr<BaseAudioContext>, GainOptions const& = {});
virtual void initialize(JS::Realm&) override;
virtual void visit_edges(Cell::Visitor&) override;
private:
// https://webaudio.github.io/web-audio-api/#dom-gainnode-gain
JS::NonnullGCPtr<AudioParam> m_gain;
};
}