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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/. */
#ifndef MediaStreamAudioSourceNode_h_
#define MediaStreamAudioSourceNode_h_
#include "AudioNode.h"
#include "DOMMediaStream.h"
#include "AudioNodeEngine.h"
namespace mozilla {
namespace dom {
class MediaStreamAudioSourceNodeEngine final : public AudioNodeEngine
{
public:
explicit MediaStreamAudioSourceNodeEngine(AudioNode* aNode)
: AudioNodeEngine(aNode), mEnabled(false) {}
bool IsEnabled() const { return mEnabled; }
enum Parameters {
ENABLE
};
void SetInt32Parameter(uint32_t aIndex, int32_t aValue) override
{
switch (aIndex) {
case ENABLE:
mEnabled = !!aValue;
break;
default:
NS_ERROR("MediaStreamAudioSourceNodeEngine bad parameter index");
}
}
private:
bool mEnabled;
};
class MediaStreamAudioSourceNode : public AudioNode,
public DOMMediaStream::TrackListener,
public PrincipalChangeObserver<MediaStreamTrack>
{
public:
static already_AddRefed<MediaStreamAudioSourceNode>
Create(AudioContext* aContext, DOMMediaStream* aStream, ErrorResult& aRv);
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(MediaStreamAudioSourceNode, AudioNode)
JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
void DestroyMediaStream() override;
uint16_t NumberOfInputs() const override { return 0; }
const char* NodeType() const override
{
return "MediaStreamAudioSourceNode";
}
virtual const char* CrossOriginErrorString() const
{
return "MediaStreamAudioSourceNodeCrossOrigin";
}
size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const override;
size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const override;
// Attaches to aTrack so that its audio content will be used as input.
void AttachToTrack(const RefPtr<MediaStreamTrack>& aTrack);
// Detaches from the currently attached track if there is one.
void DetachFromTrack();
// Attaches to the first available audio track in aMediaStream.
void AttachToFirstTrack(const RefPtr<DOMMediaStream>& aMediaStream);
// From DOMMediaStream::TrackListener.
void NotifyTrackAdded(const RefPtr<MediaStreamTrack>& aTrack) override;
void NotifyTrackRemoved(const RefPtr<MediaStreamTrack>& aTrack) override;
// From PrincipalChangeObserver<MediaStreamTrack>.
void PrincipalChanged(MediaStreamTrack* aMediaStreamTrack) override;
protected:
explicit MediaStreamAudioSourceNode(AudioContext* aContext);
void Init(DOMMediaStream* aMediaStream, ErrorResult& aRv);
void Destroy();
virtual ~MediaStreamAudioSourceNode();
private:
RefPtr<MediaInputPort> mInputPort;
RefPtr<DOMMediaStream> mInputStream;
// On construction we set this to the first audio track of mInputStream.
RefPtr<MediaStreamTrack> mInputTrack;
};
} // namespace dom
} // namespace mozilla
#endif
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