mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-01-22 09:12:13 -05:00
64 lines
1.9 KiB
C++
64 lines
1.9 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>
|
|
#include <LibWeb/WebAudio/MediaElementAudioSourceNode.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&, Optional<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();
|
|
|
|
WebIDL::ExceptionOr<GC::Ref<MediaElementAudioSourceNode>> create_media_element_source(GC::Ptr<HTML::HTMLMediaElement>);
|
|
|
|
private:
|
|
explicit AudioContext(JS::Realm& realm)
|
|
: BaseAudioContext(realm)
|
|
{
|
|
}
|
|
|
|
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();
|
|
};
|
|
|
|
}
|