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87 lines
4 KiB
C++
87 lines
4 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/ChannelSplitterNodePrototype.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/WebAudio/BaseAudioContext.h>
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#include <LibWeb/WebAudio/ChannelSplitterNode.h>
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namespace Web::WebAudio {
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GC_DEFINE_ALLOCATOR(ChannelSplitterNode);
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ChannelSplitterNode::ChannelSplitterNode(JS::Realm& realm, GC::Ref<BaseAudioContext> context, ChannelSplitterOptions const& options)
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: AudioNode(realm, context)
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, m_number_of_outputs(options.number_of_outputs)
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{
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}
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ChannelSplitterNode::~ChannelSplitterNode() = default;
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WebIDL::ExceptionOr<GC::Ref<ChannelSplitterNode>> ChannelSplitterNode::create(JS::Realm& realm, GC::Ref<BaseAudioContext> context, ChannelSplitterOptions const& options)
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{
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return construct_impl(realm, context, options);
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}
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WebIDL::ExceptionOr<GC::Ref<ChannelSplitterNode>> ChannelSplitterNode::construct_impl(JS::Realm& realm, GC::Ref<BaseAudioContext> context, ChannelSplitterOptions const& options)
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{
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// https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createchannelsplitter
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// An IndexSizeError exception MUST be thrown if numberOfOutputs is less than 1 or is greater than the number of supported channels.
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if (options.number_of_outputs < 1 || options.number_of_outputs > BaseAudioContext::MAX_NUMBER_OF_CHANNELS)
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return WebIDL::IndexSizeError::create(realm, "Invalid number of outputs"_string);
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auto node = realm.create<ChannelSplitterNode>(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/#ChannelSplitterNode
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AudioNodeDefaultOptions default_options;
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default_options.channel_count_mode = Bindings::ChannelCountMode::Explicit;
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default_options.channel_interpretation = Bindings::ChannelInterpretation::Discrete;
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default_options.channel_count = node->number_of_outputs();
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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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void ChannelSplitterNode::initialize(JS::Realm& realm)
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{
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AudioNode::initialize(realm);
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WEB_SET_PROTOTYPE_FOR_INTERFACE(ChannelSplitterNode);
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}
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WebIDL::ExceptionOr<void> ChannelSplitterNode::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 changed, and an InvalidStateError exception MUST be thrown for any attempt to change the value.
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if (channel_count != m_number_of_outputs)
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return WebIDL::InvalidStateError::create(realm(), "Channel count must be equal to number of outputs"_string);
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return AudioNode::set_channel_count(channel_count);
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}
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WebIDL::ExceptionOr<void> ChannelSplitterNode::set_channel_count_mode(Bindings::ChannelCountMode channel_count_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 changed from "explicit" and an InvalidStateError exception MUST be thrown for any attempt to change the value.
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if (channel_count_mode != Bindings::ChannelCountMode::Explicit)
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return WebIDL::InvalidStateError::create(realm(), "Channel count mode must be 'explicit'"_string);
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return AudioNode::set_channel_count_mode(channel_count_mode);
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}
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WebIDL::ExceptionOr<void> ChannelSplitterNode::set_channel_interpretation(Bindings::ChannelInterpretation channel_interpretation)
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{
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// https://webaudio.github.io/web-audio-api/#audionode-channelinterpretation-constraints
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// The channel intepretation can not be changed from "discrete" and a InvalidStateError exception MUST be thrown for any attempt to change the value.
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if (channel_interpretation != Bindings::ChannelInterpretation::Discrete)
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return WebIDL::InvalidStateError::create(realm(), "Channel interpretation must be 'discrete'"_string);
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return AudioNode::set_channel_interpretation(channel_interpretation);
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}
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}
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