ConstantSourceNode.h

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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 ConstantSourceNode_h_

#define ConstantSourceNode_h_

#include "AudioScheduledSourceNode.h"

#include "AudioParam.h"

#include "mozilla/dom/ConstantSourceNodeBinding.h"

namespace mozilla::dom {

class AudioContext;

class ConstantSourceNode final : public AudioScheduledSourceNode,

                                 public MainThreadMediaTrackListener {

 public:

  explicit ConstantSourceNode(AudioContext* aContext);

  NS_DECL_ISUPPORTS_INHERITED

  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ConstantSourceNode,

                                           AudioScheduledSourceNode)

  JSObject* WrapObject(JSContext* aCx,

                       JS::Handle<JSObject*> aGivenProto) override;

  static already_AddRefed<ConstantSourceNode> Constructor(

      const GlobalObject& aGlobal, AudioContext& aContext,

      const ConstantSourceOptions& aOptions);

  void DestroyMediaTrack() override;

  uint16_t NumberOfInputs() const final { return 0; }

  AudioParam* Offset() const { return mOffset; }

  void Start(double aWhen, ErrorResult& rv) override;

  void Stop(double aWhen, ErrorResult& rv) override;

  void NotifyMainThreadTrackEnded() override;

  const char* NodeType() const override { return "ConstantSourceNode"; }

  size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const override;

  size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const override;

 protected:

  virtual ~ConstantSourceNode();

 private:

  RefPtr<AudioParam> mOffset;

  bool mStartCalled;

};

}  // namespace mozilla::dom

#endif