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1678f43c38
Which currently will always throw an exception as it is unimplemented under the hood - but this gives all of the plumbing we need in order to create a oscillator node as used in the reduced turnstyle testcase.
63 lines
2.5 KiB
C++
63 lines
2.5 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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*
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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/WebIDL/Types.h>
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namespace Web::WebAudio {
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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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float sample_rate() const { return m_sample_rate; }
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double current_time() const { return m_current_time; }
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Bindings::AudioContextState state() const { return m_control_thread_state; }
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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<JS::NonnullGCPtr<OscillatorNode>> create_oscillator();
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protected:
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explicit BaseAudioContext(JS::Realm&);
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virtual void initialize(JS::Realm&) override;
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private:
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float m_sample_rate { 0 };
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double m_current_time { 0 };
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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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};
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}
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