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LibWeb/WebAudio: Add DelayNode interface

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Tim Ledbetter 2025-01-03 23:42:22 +00:00 • committed by Tim Ledbetter
commit 6c4c925f02
Notes: github-actions[bot] 2025-01-08 15:33:08 +00:00
8 changed files with 262 additions and 0 deletions
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Libraries/LibWeb/WebAudio/DelayNode.cpp Normal file
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/*
* Copyright (c) 2025, Tim Ledbetter <tim.ledbetter@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/Bindings/DelayNodePrototype.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/WebAudio/BaseAudioContext.h>
#include <LibWeb/WebAudio/DelayNode.h>
namespace Web::WebAudio {
GC_DEFINE_ALLOCATOR(DelayNode);
DelayNode::DelayNode(JS::Realm& realm, GC::Ref<BaseAudioContext> context, DelayOptions const& options)
: AudioNode(realm, context)
, m_delay_time(AudioParam::create(realm, options.delay_time, 0, options.max_delay_time, Bindings::AutomationRate::ARate))
{
}
DelayNode::~DelayNode() = default;
WebIDL::ExceptionOr<GC::Ref<DelayNode>> DelayNode::create(JS::Realm& realm, GC::Ref<BaseAudioContext> context, DelayOptions const& options)
{
return construct_impl(realm, context, options);
}
WebIDL::ExceptionOr<GC::Ref<DelayNode>> DelayNode::construct_impl(JS::Realm& realm, GC::Ref<BaseAudioContext> context, DelayOptions const& options)
{
// https://webaudio.github.io/web-audio-api/#dom-delayoptions-maxdelaytime
// If specified, this value MUST be greater than zero and less than three minutes or a NotSupportedError exception MUST be thrown.
static constexpr double maximum_delay_time_seconds = 180;
if (options.max_delay_time <= 0 || options.max_delay_time >= maximum_delay_time_seconds || isnan(options.max_delay_time))
return WebIDL::NotSupportedError::create(realm, "Max delay time must be between 0 and 180 seconds exclusive"_string);
auto node = realm.create<DelayNode>(realm, context, options);
// Default options for channel count and interpretation
// https://webaudio.github.io/web-audio-api/#DelayNode
AudioNodeDefaultOptions default_options;
default_options.channel_count = 2;
default_options.channel_count_mode = Bindings::ChannelCountMode::Max;
default_options.channel_interpretation = Bindings::ChannelInterpretation::Speakers;
// FIXME: Set tail-time to yes
TRY(node->initialize_audio_node_options(options, default_options));
return node;
}
void DelayNode::initialize(JS::Realm& realm)
{
Base::initialize(realm);
WEB_SET_PROTOTYPE_FOR_INTERFACE(DelayNode);
}
void DelayNode::visit_edges(Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(m_delay_time);
}
}