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/* -*- 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 "nsIDocument.h"
#include "mozilla/dom/MediaStreamAudioDestinationNodeBinding.h"
#include "AudioNodeEngine.h"
#include "AudioNodeStream.h"
#include "DOMMediaStream.h"
#include "MediaStreamTrack.h"
#include "TrackUnionStream.h"
namespace mozilla {
namespace dom {
class AudioDestinationTrackSource :
public MediaStreamTrackSource
{
public:
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(AudioDestinationTrackSource,
MediaStreamTrackSource)
AudioDestinationTrackSource(MediaStreamAudioDestinationNode* aNode,
nsIPrincipal* aPrincipal)
: MediaStreamTrackSource(aPrincipal, nsString())
, mNode(aNode)
{
}
void Destroy() override
{
if (mNode) {
mNode->DestroyMediaStream();
mNode = nullptr;
}
}
MediaSourceEnum GetMediaSource() const override
{
return MediaSourceEnum::AudioCapture;
}
void Stop() override
{
Destroy();
}
private:
virtual ~AudioDestinationTrackSource() {}
RefPtr<MediaStreamAudioDestinationNode> mNode;
};
NS_IMPL_ADDREF_INHERITED(AudioDestinationTrackSource,
MediaStreamTrackSource)
NS_IMPL_RELEASE_INHERITED(AudioDestinationTrackSource,
MediaStreamTrackSource)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(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_INHERITED(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(
DOMAudioNodeMediaStream::CreateTrackUnionStreamAsInput(GetOwner(),
this,
aContext->Graph()))
{
// Ensure an audio track with the correct ID is exposed to JS
nsIDocument* doc = aContext->GetParentObject()->GetExtantDoc();
RefPtr<MediaStreamTrackSource> source =
new AudioDestinationTrackSource(this, doc->NodePrincipal());
RefPtr<MediaStreamTrack> track =
mDOMStream->CreateDOMTrack(AudioNodeStream::AUDIO_TRACK,
MediaSegment::AUDIO, source,
MediaTrackConstraints());
mDOMStream->AddTrackInternal(track);
ProcessedMediaStream* outputStream = mDOMStream->GetInputStream()->AsProcessedStream();
MOZ_ASSERT(!!outputStream);
AudioNodeEngine* engine = new AudioNodeEngine(this);
mStream = AudioNodeStream::Create(aContext, engine,
AudioNodeStream::EXTERNAL_OUTPUT,
aContext->Graph());
mPort = outputStream->AllocateInputPort(mStream, AudioNodeStream::AUDIO_TRACK);
}
MediaStreamAudioDestinationNode::~MediaStreamAudioDestinationNode()
{
}
size_t
MediaStreamAudioDestinationNode::SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const
{
// Future:
// - mDOMStream
size_t amount = AudioNode::SizeOfExcludingThis(aMallocSizeOf);
amount += mPort->SizeOfIncludingThis(aMallocSizeOf);
return amount;
}
size_t
MediaStreamAudioDestinationNode::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const
{
return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
}
void
MediaStreamAudioDestinationNode::DestroyMediaStream()
{
AudioNode::DestroyMediaStream();
if (mPort) {
mPort->Destroy();
mPort = nullptr;
}
}
JSObject*
MediaStreamAudioDestinationNode::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return MediaStreamAudioDestinationNodeBinding::Wrap(aCx, this, aGivenProto);
}
} // namespace dom
} // namespace mozilla
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