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2c3531ab78
This change also removes as much direct use of JS::Promise in LibWeb as possible. When specs refer to `Promise<T>` they should be assumed to be referring to the WebIDL Promise type, not the JS::Promise type. The one exception is the HostPromiseRejectionTracker hook on the JS VM. This facility and its associated sets and events are intended to expose the exact opaque object handles that were rejected to author code. This is not possible with the WebIDL Promise type, so we have to use JS::Promise or JS::Object to hold onto the promises. It also exposes which specs need some updates in the area of promises. WebDriver stands out in this regard. WebAudio could use some more cross-references to WebIDL as well to clarify things.
58 lines
1.8 KiB
C++
58 lines
1.8 KiB
C++
/*
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* Copyright (c) 2023, Luke Wilde <lukew@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/AudioContextPrototype.h>
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#include <LibWeb/HighResolutionTime/DOMHighResTimeStamp.h>
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#include <LibWeb/WebAudio/BaseAudioContext.h>
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namespace Web::WebAudio {
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struct AudioContextOptions {
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Bindings::AudioContextLatencyCategory latency_hint = Bindings::AudioContextLatencyCategory::Interactive;
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Optional<float> sample_rate;
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};
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struct AudioTimestamp {
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double context_time { 0 };
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double performance_time { 0 };
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};
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// https://webaudio.github.io/web-audio-api/#AudioContext
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class AudioContext final : public BaseAudioContext {
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WEB_PLATFORM_OBJECT(AudioContext, BaseAudioContext);
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JS_DECLARE_ALLOCATOR(AudioContext);
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public:
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static WebIDL::ExceptionOr<JS::NonnullGCPtr<AudioContext>> construct_impl(JS::Realm&, AudioContextOptions const& context_options = {});
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virtual ~AudioContext() override;
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double base_latency() const { return m_base_latency; }
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double output_latency() const { return m_output_latency; }
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AudioTimestamp get_output_timestamp();
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WebIDL::ExceptionOr<JS::NonnullGCPtr<WebIDL::Promise>> resume();
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WebIDL::ExceptionOr<JS::NonnullGCPtr<WebIDL::Promise>> suspend();
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WebIDL::ExceptionOr<JS::NonnullGCPtr<WebIDL::Promise>> close();
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private:
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explicit AudioContext(JS::Realm&, AudioContextOptions const& context_options);
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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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double m_base_latency { 0 };
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double m_output_latency { 0 };
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bool m_allowed_to_start = true;
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Vector<JS::NonnullGCPtr<WebIDL::Promise>> m_pending_resume_promises;
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bool m_suspended_by_user = false;
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bool start_rendering_audio_graph();
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};
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}
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