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85 lines
3.3 KiB
C++
85 lines
3.3 KiB
C++
/*
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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 <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/WebAudio/AudioNode.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/StereoPannerNode.h>
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namespace Web::WebAudio {
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GC_DEFINE_ALLOCATOR(StereoPannerNode);
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StereoPannerNode::~StereoPannerNode() = default;
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WebIDL::ExceptionOr<GC::Ref<StereoPannerNode>> StereoPannerNode::create(JS::Realm& realm, GC::Ref<BaseAudioContext> context, StereoPannerOptions 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-stereopannernode-stereopannernode
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WebIDL::ExceptionOr<GC::Ref<StereoPannerNode>> StereoPannerNode::construct_impl(JS::Realm& realm, GC::Ref<BaseAudioContext> context, StereoPannerOptions const& options)
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{
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// Create the node and allocate memory
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auto node = realm.create<StereoPannerNode>(realm, context, options);
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// Default options for channel count and interpretation
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// https://webaudio.github.io/web-audio-api/#stereopannernode
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AudioNodeDefaultOptions default_options;
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default_options.channel_count_mode = Bindings::ChannelCountMode::ClampedMax;
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default_options.channel_interpretation = Bindings::ChannelInterpretation::Speakers;
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default_options.channel_count = 2;
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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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// https://webaudio.github.io/web-audio-api/#dom-audionode-channelcountmode
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WebIDL::ExceptionOr<void> StereoPannerNode::set_channel_count_mode(Bindings::ChannelCountMode mode)
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{
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// https://webaudio.github.io/web-audio-api/#audionode-channelcountmode-constraints
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// The channel count mode cannot be set to "max", and a NotSupportedError exception MUST be thrown for any attempt to set it to "max".
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if (mode == Bindings::ChannelCountMode::Max) {
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return WebIDL::NotSupportedError::create(realm(), "StereoPannerNode does not support 'max' as channelCountMode."_string);
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}
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// If the mode is valid, call the base class implementation
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return AudioNode::set_channel_count_mode(mode);
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}
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// https://webaudio.github.io/web-audio-api/#dom-audionode-channelcount
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WebIDL::ExceptionOr<void> StereoPannerNode::set_channel_count(WebIDL::UnsignedLong channel_count)
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{
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// https://webaudio.github.io/web-audio-api/#audionode-channelcount-constraints
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// The channel count cannot be greater than two, and a NotSupportedError exception MUST be thrown for any attempt to change it to a value greater than two.
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if (channel_count > 2) {
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return WebIDL::NotSupportedError::create(realm(), "StereoPannerNode does not support channel count greater than 2"_string);
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}
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return AudioNode::set_channel_count(channel_count);
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}
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StereoPannerNode::StereoPannerNode(JS::Realm& realm, GC::Ref<BaseAudioContext> context, StereoPannerOptions const& options)
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: AudioNode(realm, context)
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, m_pan(AudioParam::create(realm, context, options.pan, -1, 1, Bindings::AutomationRate::ARate))
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{
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}
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void StereoPannerNode::initialize(JS::Realm& realm)
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{
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Base::initialize(realm);
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WEB_SET_PROTOTYPE_FOR_INTERFACE(StereoPannerNode);
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}
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void StereoPannerNode::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_pan);
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}
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}
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