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5c57acf140
An exception is now thown if an `AudioNode` attempts to connect to an `AudioParam` from a different `BaseAudioContext`.
98 lines
3.6 KiB
C++
98 lines
3.6 KiB
C++
/*
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* Copyright (c) 2024, Shannon Booth <shannon@serenityos.org>
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* Copyright (c) 2025, Tim Ledbetter <tim.ledbetter@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Math.h>
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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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GC_DEFINE_ALLOCATOR(OscillatorNode);
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OscillatorNode::~OscillatorNode() = default;
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WebIDL::ExceptionOr<GC::Ref<OscillatorNode>> OscillatorNode::create(JS::Realm& realm, GC::Ref<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<GC::Ref<OscillatorNode>> OscillatorNode::construct_impl(JS::Realm& realm, GC::Ref<BaseAudioContext> context, OscillatorOptions const& options)
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{
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if (options.type == Bindings::OscillatorType::Custom && !options.periodic_wave)
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return WebIDL::InvalidStateError::create(realm, "Oscillator node type 'custom' requires PeriodicWave to be provided"_string);
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auto node = realm.create<OscillatorNode>(realm, context, options);
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if (options.type == Bindings::OscillatorType::Custom)
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node->set_periodic_wave(options.periodic_wave);
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// Default options for channel count and interpretation
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// https://webaudio.github.io/web-audio-api/#OscillatorNode
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AudioNodeDefaultOptions default_options;
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default_options.channel_count = 2;
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default_options.channel_count_mode = Bindings::ChannelCountMode::Max;
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default_options.channel_interpretation = Bindings::ChannelInterpretation::Speakers;
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// FIXME: Set tail-time to no
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TRY(node->initialize_audio_node_options(options, default_options));
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return node;
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}
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OscillatorNode::OscillatorNode(JS::Realm& realm, GC::Ref<BaseAudioContext> context, OscillatorOptions const& options)
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: AudioScheduledSourceNode(realm, context)
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, m_type(options.type)
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, m_frequency(AudioParam::create(realm, context, options.frequency, -context->nyquist_frequency(), context->nyquist_frequency(), Bindings::AutomationRate::ARate))
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, m_detune(AudioParam::create(realm, context, options.detune, -1200 * AK::log2(NumericLimits<float>::max()), 1200 * AK::log2(NumericLimits<float>::max()), 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::set_type(Bindings::OscillatorType type)
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{
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if (type == Bindings::OscillatorType::Custom && m_type != Bindings::OscillatorType::Custom)
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return WebIDL::InvalidStateError::create(realm(), "Oscillator node type cannot be changed to 'custom'"_string);
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// FIXME: An appropriate PeriodicWave should be set here based on the given type.
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set_periodic_wave(nullptr);
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m_type = type;
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return {};
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}
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// https://webaudio.github.io/web-audio-api/#dom-oscillatornode-setperiodicwave
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void OscillatorNode::set_periodic_wave(GC::Ptr<PeriodicWave> periodic_wave)
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{
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m_periodic_wave = periodic_wave;
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m_type = Bindings::OscillatorType::Custom;
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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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visitor.visit(m_detune);
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visitor.visit(m_periodic_wave);
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}
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}
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