9b79a686eb
The main motivation behind this is to remove JS specifics of the Realm from the implementation of the Heap. As a side effect of this change, this is a bit nicer to read than the previous approach, and in my opinion, also makes it a little more clear that this method is specific to a JavaScript Realm.
78 lines
2.8 KiB
C++
78 lines
2.8 KiB
C++
/*
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* Copyright (c) 2024, Shannon Booth <shannon@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/Bindings/OscillatorNodePrototype.h>
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#include <LibWeb/WebAudio/AudioParam.h>
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#include <LibWeb/WebAudio/BaseAudioContext.h>
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#include <LibWeb/WebAudio/OscillatorNode.h>
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namespace Web::WebAudio {
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JS_DEFINE_ALLOCATOR(OscillatorNode);
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OscillatorNode::~OscillatorNode() = default;
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WebIDL::ExceptionOr<JS::NonnullGCPtr<OscillatorNode>> OscillatorNode::create(JS::Realm& realm, JS::NonnullGCPtr<BaseAudioContext> context, OscillatorOptions const& options)
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{
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return construct_impl(realm, context, options);
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}
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// https://webaudio.github.io/web-audio-api/#dom-oscillatornode-oscillatornode
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WebIDL::ExceptionOr<JS::NonnullGCPtr<OscillatorNode>> OscillatorNode::construct_impl(JS::Realm& realm, JS::NonnullGCPtr<BaseAudioContext> context, OscillatorOptions const& options)
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{
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// FIXME: Invoke "Initialize the AudioNode" steps.
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TRY(verify_valid_type(realm, options.type));
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auto node = realm.create<OscillatorNode>(realm, context, options);
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return node;
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}
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OscillatorNode::OscillatorNode(JS::Realm& realm, JS::NonnullGCPtr<BaseAudioContext> context, OscillatorOptions const& options)
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: AudioScheduledSourceNode(realm, context)
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, m_frequency(AudioParam::create(realm, options.frequency, -context->nyquist_frequency(), context->nyquist_frequency(), Bindings::AutomationRate::ARate))
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{
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}
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// https://webaudio.github.io/web-audio-api/#dom-oscillatornode-type
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Bindings::OscillatorType OscillatorNode::type() const
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{
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return m_type;
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}
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// https://webaudio.github.io/web-audio-api/#dom-oscillatornode-type
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WebIDL::ExceptionOr<void> OscillatorNode::verify_valid_type(JS::Realm& realm, Bindings::OscillatorType type)
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{
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// The shape of the periodic waveform. It may directly be set to any of the type constant values except
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// for "custom". ⌛ Doing so MUST throw an InvalidStateError exception. The setPeriodicWave() method can
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// be used to set a custom waveform, which results in this attribute being set to "custom". The default
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// value is "sine". When this attribute is set, the phase of the oscillator MUST be conserved.
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if (type == Bindings::OscillatorType::Custom)
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return WebIDL::InvalidStateError::create(realm, "Oscillator node type cannot be set to 'custom'"_string);
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return {};
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}
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// https://webaudio.github.io/web-audio-api/#dom-oscillatornode-type
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WebIDL::ExceptionOr<void> OscillatorNode::set_type(Bindings::OscillatorType type)
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{
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TRY(verify_valid_type(realm(), type));
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m_type = type;
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return {};
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}
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void OscillatorNode::initialize(JS::Realm& realm)
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{
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Base::initialize(realm);
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WEB_SET_PROTOTYPE_FOR_INTERFACE(OscillatorNode);
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}
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void OscillatorNode::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_frequency);
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}
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}
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