mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-26 09:30:24 +00:00
f87041bf3a
Resulting in a massive rename across almost everywhere! Alongside the namespace change, we now have the following names: * JS::NonnullGCPtr -> GC::Ref * JS::GCPtr -> GC::Ptr * JS::HeapFunction -> GC::Function * JS::CellImpl -> GC::Cell * JS::Handle -> GC::Root
91 lines
4 KiB
C++
91 lines
4 KiB
C++
/*
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* Copyright (c) 2023, Luke Wilde <lukew@serenityos.org>
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* Copyright (c) 2024, Shannon Booth <shannon@serenityos.org>
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* Copyright (c) 2024, Jelle Raaijmakers <jelle@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibWeb/Bindings/BaseAudioContextPrototype.h>
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#include <LibWeb/DOM/EventTarget.h>
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#include <LibWeb/WebAudio/AudioListener.h>
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#include <LibWeb/WebAudio/BiquadFilterNode.h>
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#include <LibWeb/WebIDL/Types.h>
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namespace Web::WebAudio {
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class AudioDestinationNode;
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// https://webaudio.github.io/web-audio-api/#BaseAudioContext
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class BaseAudioContext : public DOM::EventTarget {
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WEB_PLATFORM_OBJECT(BaseAudioContext, DOM::EventTarget);
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public:
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virtual ~BaseAudioContext() override;
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// https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createbuffer-numberofchannels
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// > An implementation MUST support at least 32 channels.
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// Other browsers appear to only allow 32 channels - so let's limit ourselves to that too.
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static constexpr WebIDL::UnsignedLong MAX_NUMBER_OF_CHANNELS { 32 };
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// https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createbuffer-samplerate
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// > An implementation MUST support sample rates in at least the range 8000 to 96000.
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// This doesn't seem consistent between browsers. We use what firefox accepts from testing BaseAudioContext.createAudioBuffer.
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static constexpr float MIN_SAMPLE_RATE { 8000 };
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static constexpr float MAX_SAMPLE_RATE { 192000 };
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GC::Ref<AudioDestinationNode> destination() const { return m_destination; }
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float sample_rate() const { return m_sample_rate; }
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double current_time() const { return m_current_time; }
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GC::Ref<AudioListener> listener() const { return m_listener; }
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Bindings::AudioContextState state() const { return m_control_thread_state; }
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// https://webaudio.github.io/web-audio-api/#--nyquist-frequency
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float nyquist_frequency() const { return m_sample_rate / 2; }
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void set_onstatechange(WebIDL::CallbackType*);
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WebIDL::CallbackType* onstatechange();
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void set_sample_rate(float sample_rate) { m_sample_rate = sample_rate; }
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void set_control_state(Bindings::AudioContextState state) { m_control_thread_state = state; }
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void set_rendering_state(Bindings::AudioContextState state) { m_rendering_thread_state = state; }
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static WebIDL::ExceptionOr<void> verify_audio_options_inside_nominal_range(JS::Realm&, WebIDL::UnsignedLong number_of_channels, WebIDL::UnsignedLong length, float sample_rate);
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WebIDL::ExceptionOr<GC::Ref<BiquadFilterNode>> create_biquad_filter();
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WebIDL::ExceptionOr<GC::Ref<AudioBuffer>> create_buffer(WebIDL::UnsignedLong number_of_channels, WebIDL::UnsignedLong length, float sample_rate);
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WebIDL::ExceptionOr<GC::Ref<AudioBufferSourceNode>> create_buffer_source();
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WebIDL::ExceptionOr<GC::Ref<OscillatorNode>> create_oscillator();
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WebIDL::ExceptionOr<GC::Ref<DynamicsCompressorNode>> create_dynamics_compressor();
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WebIDL::ExceptionOr<GC::Ref<GainNode>> create_gain();
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GC::Ref<WebIDL::Promise> decode_audio_data(GC::Root<WebIDL::BufferSource>, GC::Ptr<WebIDL::CallbackType>, GC::Ptr<WebIDL::CallbackType>);
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protected:
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explicit BaseAudioContext(JS::Realm&, float m_sample_rate = 0);
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void queue_a_media_element_task(GC::Ref<GC::Function<void()>>);
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virtual void initialize(JS::Realm&) override;
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virtual void visit_edges(Cell::Visitor&) override;
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GC::Ref<AudioDestinationNode> m_destination;
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Vector<GC::Ref<WebIDL::Promise>> m_pending_promises;
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private:
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void queue_a_decoding_operation(GC::Ref<JS::PromiseCapability>, GC::Root<WebIDL::BufferSource>, GC::Ptr<WebIDL::CallbackType>, GC::Ptr<WebIDL::CallbackType>);
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float m_sample_rate { 0 };
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double m_current_time { 0 };
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GC::Ref<AudioListener> m_listener;
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Bindings::AudioContextState m_control_thread_state = Bindings::AudioContextState::Suspended;
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Bindings::AudioContextState m_rendering_thread_state = Bindings::AudioContextState::Suspended;
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HTML::UniqueTaskSource m_media_element_event_task_source {};
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};
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}
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