From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- .../webaudio/MediaStreamAudioDestinationNode.cpp | 150 +++++++++++++++++++++ 1 file changed, 150 insertions(+) create mode 100644 dom/media/webaudio/MediaStreamAudioDestinationNode.cpp (limited to 'dom/media/webaudio/MediaStreamAudioDestinationNode.cpp') diff --git a/dom/media/webaudio/MediaStreamAudioDestinationNode.cpp b/dom/media/webaudio/MediaStreamAudioDestinationNode.cpp new file mode 100644 index 0000000000..704adaa304 --- /dev/null +++ b/dom/media/webaudio/MediaStreamAudioDestinationNode.cpp @@ -0,0 +1,150 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim:set ts=2 sw=2 sts=2 et cindent: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "MediaStreamAudioDestinationNode.h" +#include "mozilla/dom/Document.h" +#include "mozilla/dom/MediaStreamAudioDestinationNodeBinding.h" +#include "AudioNodeEngine.h" +#include "AudioNodeTrack.h" +#include "AudioStreamTrack.h" +#include "DOMMediaStream.h" +#include "ForwardedInputTrack.h" + +namespace mozilla::dom { + +class AudioDestinationTrackSource final : public MediaStreamTrackSource { + public: + NS_DECL_ISUPPORTS_INHERITED + NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(AudioDestinationTrackSource, + MediaStreamTrackSource) + + AudioDestinationTrackSource(MediaStreamAudioDestinationNode* aNode, + mozilla::MediaTrack* aInputTrack, + ProcessedMediaTrack* aTrack, + nsIPrincipal* aPrincipal) + : MediaStreamTrackSource( + aPrincipal, nsString(), + // We pass 0 here because tracking ids are video only for now. + TrackingId(TrackingId::Source::AudioDestinationNode, 0)), + mTrack(aTrack), + mPort(mTrack->AllocateInputPort(aInputTrack)), + mNode(aNode) {} + + void Destroy() override { + if (!mTrack->IsDestroyed()) { + mTrack->Destroy(); + mPort->Destroy(); + } + if (mNode) { + mNode->DestroyMediaTrack(); + mNode = nullptr; + } + } + + MediaSourceEnum GetMediaSource() const override { + return MediaSourceEnum::AudioCapture; + } + + void Stop() override { Destroy(); } + + void Disable() override {} + + void Enable() override {} + + const RefPtr mTrack; + const RefPtr mPort; + + private: + ~AudioDestinationTrackSource() = default; + + RefPtr mNode; +}; + +NS_IMPL_ADDREF_INHERITED(AudioDestinationTrackSource, MediaStreamTrackSource) +NS_IMPL_RELEASE_INHERITED(AudioDestinationTrackSource, MediaStreamTrackSource) +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(AudioDestinationTrackSource) +NS_INTERFACE_MAP_END_INHERITING(MediaStreamTrackSource) +NS_IMPL_CYCLE_COLLECTION_INHERITED(AudioDestinationTrackSource, + MediaStreamTrackSource, mNode) + +NS_IMPL_CYCLE_COLLECTION_INHERITED(MediaStreamAudioDestinationNode, AudioNode, + mDOMStream) + +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(MediaStreamAudioDestinationNode) +NS_INTERFACE_MAP_END_INHERITING(AudioNode) + +NS_IMPL_ADDREF_INHERITED(MediaStreamAudioDestinationNode, AudioNode) +NS_IMPL_RELEASE_INHERITED(MediaStreamAudioDestinationNode, AudioNode) + +MediaStreamAudioDestinationNode::MediaStreamAudioDestinationNode( + AudioContext* aContext) + : AudioNode(aContext, 2, ChannelCountMode::Explicit, + ChannelInterpretation::Speakers), + mDOMStream(MakeAndAddRef(GetOwner())) { + // Ensure an audio track with the correct ID is exposed to JS. If we can't get + // a principal here because the document is not available, pass in a null + // principal. This happens in edge cases when the document is being unloaded + // and it does not matter too much to have something working as long as it's + // not dangerous. + nsCOMPtr principal = nullptr; + if (aContext->GetParentObject()) { + Document* doc = aContext->GetParentObject()->GetExtantDoc(); + principal = doc->NodePrincipal(); + } + mTrack = AudioNodeTrack::Create(aContext, new AudioNodeEngine(this), + AudioNodeTrack::EXTERNAL_OUTPUT, + aContext->Graph()); + auto source = MakeRefPtr( + this, mTrack, + aContext->Graph()->CreateForwardedInputTrack(MediaSegment::AUDIO), + principal); + auto track = MakeRefPtr(GetOwner(), source->mTrack, source); + mDOMStream->AddTrackInternal(track); +} + +/* static */ +already_AddRefed +MediaStreamAudioDestinationNode::Create(AudioContext& aAudioContext, + const AudioNodeOptions& aOptions, + ErrorResult& aRv) { + // The spec has a pointless check here. See + // https://github.com/WebAudio/web-audio-api/issues/2149 + MOZ_RELEASE_ASSERT(!aAudioContext.IsOffline(), "Bindings messed up?"); + + RefPtr audioNode = + new MediaStreamAudioDestinationNode(&aAudioContext); + + audioNode->Initialize(aOptions, aRv); + if (NS_WARN_IF(aRv.Failed())) { + return nullptr; + } + + return audioNode.forget(); +} + +size_t MediaStreamAudioDestinationNode::SizeOfExcludingThis( + MallocSizeOf aMallocSizeOf) const { + // Future: + // - mDOMStream + size_t amount = AudioNode::SizeOfExcludingThis(aMallocSizeOf); + return amount; +} + +size_t MediaStreamAudioDestinationNode::SizeOfIncludingThis( + MallocSizeOf aMallocSizeOf) const { + return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf); +} + +void MediaStreamAudioDestinationNode::DestroyMediaTrack() { + AudioNode::DestroyMediaTrack(); +} + +JSObject* MediaStreamAudioDestinationNode::WrapObject( + JSContext* aCx, JS::Handle aGivenProto) { + return MediaStreamAudioDestinationNode_Binding::Wrap(aCx, this, aGivenProto); +} + +} // namespace mozilla::dom -- cgit v1.2.3