1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
6
7 #include "AudioWorkletImpl.h"
8
9 #include "AudioContext.h"
10 #include "AudioNodeTrack.h"
11 #include "GeckoProfiler.h"
12 #include "mozilla/dom/AudioWorkletBinding.h"
13 #include "mozilla/dom/AudioWorkletGlobalScope.h"
14 #include "mozilla/dom/Worklet.h"
15 #include "mozilla/dom/WorkletThread.h"
16 #include "nsGlobalWindowInner.h"
17
18 namespace mozilla {
19
CreateWorklet(dom::AudioContext * aContext,ErrorResult & aRv)20 /* static */ already_AddRefed<dom::Worklet> AudioWorkletImpl::CreateWorklet(
21 dom::AudioContext* aContext, ErrorResult& aRv) {
22 MOZ_ASSERT(NS_IsMainThread());
23
24 nsCOMPtr<nsPIDOMWindowInner> window = aContext->GetOwner();
25 if (NS_WARN_IF(!window)) {
26 aRv.Throw(NS_ERROR_FAILURE);
27 return nullptr;
28 }
29 nsCOMPtr<nsIPrincipal> principal =
30 nsGlobalWindowInner::Cast(window)->GetPrincipal();
31 if (NS_WARN_IF(!principal)) {
32 aRv.Throw(NS_ERROR_FAILURE);
33 return nullptr;
34 }
35
36 RefPtr<AudioWorkletImpl> impl =
37 new AudioWorkletImpl(window, principal, aContext->DestinationTrack());
38
39 // The Worklet owns a reference to the AudioContext so as to keep the graph
40 // thread running as long as the Worklet is alive by keeping the
41 // AudioDestinationNode alive.
42 return MakeAndAddRef<dom::Worklet>(window, std::move(impl),
43 ToSupports(aContext));
44 }
45
AudioWorkletImpl(nsPIDOMWindowInner * aWindow,nsIPrincipal * aPrincipal,AudioNodeTrack * aDestinationTrack)46 AudioWorkletImpl::AudioWorkletImpl(nsPIDOMWindowInner* aWindow,
47 nsIPrincipal* aPrincipal,
48 AudioNodeTrack* aDestinationTrack)
49 : WorkletImpl(aWindow, aPrincipal), mDestinationTrack(aDestinationTrack) {}
50
51 AudioWorkletImpl::~AudioWorkletImpl() = default;
52
WrapWorklet(JSContext * aCx,dom::Worklet * aWorklet,JS::Handle<JSObject * > aGivenProto)53 JSObject* AudioWorkletImpl::WrapWorklet(JSContext* aCx, dom::Worklet* aWorklet,
54 JS::Handle<JSObject*> aGivenProto) {
55 MOZ_ASSERT(NS_IsMainThread());
56 return dom::AudioWorklet_Binding::Wrap(aCx, aWorklet, aGivenProto);
57 }
58
SendControlMessage(already_AddRefed<nsIRunnable> aRunnable)59 nsresult AudioWorkletImpl::SendControlMessage(
60 already_AddRefed<nsIRunnable> aRunnable) {
61 mDestinationTrack->SendRunnable(std::move(aRunnable));
62 return NS_OK;
63 }
64
OnAddModuleStarted() const65 void AudioWorkletImpl::OnAddModuleStarted() const {
66 #ifdef MOZ_GECKO_PROFILER
67 profiler_add_marker(ProfilerStringView("AudioWorklet.addModule"),
68 geckoprofiler::category::MEDIA_RT,
69 {MarkerTiming::IntervalStart()});
70 #endif
71 }
72
OnAddModulePromiseSettled() const73 void AudioWorkletImpl::OnAddModulePromiseSettled() const {
74 #ifdef MOZ_GECKO_PROFILER
75 profiler_add_marker(ProfilerStringView("AudioWorklet.addModule"),
76 geckoprofiler::category::MEDIA_RT,
77 {MarkerTiming::IntervalEnd()});
78 #endif
79 }
80
81 already_AddRefed<dom::WorkletGlobalScope>
ConstructGlobalScope()82 AudioWorkletImpl::ConstructGlobalScope() {
83 dom::WorkletThread::AssertIsOnWorkletThread();
84
85 return MakeAndAddRef<dom::AudioWorkletGlobalScope>(this);
86 }
87
88 } // namespace mozilla
89