ladybird/Libraries/LibWeb/WebAudio/AudioContext.h
Shannon Booth f87041bf3a LibGC+Everywhere: Factor out a LibGC from LibJS
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
2024-11-15 14:49:20 +01:00

58 lines
1.7 KiB
C++

/*
* Copyright (c) 2023, Luke Wilde <lukew@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibWeb/Bindings/AudioContextPrototype.h>
#include <LibWeb/HighResolutionTime/DOMHighResTimeStamp.h>
#include <LibWeb/WebAudio/BaseAudioContext.h>
namespace Web::WebAudio {
struct AudioContextOptions {
Bindings::AudioContextLatencyCategory latency_hint = Bindings::AudioContextLatencyCategory::Interactive;
Optional<float> sample_rate;
};
struct AudioTimestamp {
double context_time { 0 };
double performance_time { 0 };
};
// https://webaudio.github.io/web-audio-api/#AudioContext
class AudioContext final : public BaseAudioContext {
WEB_PLATFORM_OBJECT(AudioContext, BaseAudioContext);
GC_DECLARE_ALLOCATOR(AudioContext);
public:
static WebIDL::ExceptionOr<GC::Ref<AudioContext>> construct_impl(JS::Realm&, AudioContextOptions const& context_options = {});
virtual ~AudioContext() override;
double base_latency() const { return m_base_latency; }
double output_latency() const { return m_output_latency; }
AudioTimestamp get_output_timestamp();
WebIDL::ExceptionOr<GC::Ref<WebIDL::Promise>> resume();
WebIDL::ExceptionOr<GC::Ref<WebIDL::Promise>> suspend();
WebIDL::ExceptionOr<GC::Ref<WebIDL::Promise>> close();
private:
explicit AudioContext(JS::Realm&, AudioContextOptions const& context_options);
virtual void initialize(JS::Realm&) override;
virtual void visit_edges(Cell::Visitor&) override;
double m_base_latency { 0 };
double m_output_latency { 0 };
bool m_allowed_to_start = true;
Vector<GC::Ref<WebIDL::Promise>> m_pending_resume_promises;
bool m_suspended_by_user = false;
bool start_rendering_audio_graph();
};
}