gecko-dev/content/media/webaudio/GainNode.h

/* -*- 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 GainNode_h_
#define GainNode_h_

#include "AudioNode.h"
#include "AudioParam.h"

namespace mozilla {
namespace dom {

class AudioContext;

class GainNode : public AudioNode
{
public:
  explicit GainNode(AudioContext* aContext);

  NS_DECL_ISUPPORTS_INHERITED
  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(GainNode, AudioNode)

  virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;

  AudioParam* Gain() const
  {
    return mGain;
  }

  virtual const char* NodeType() const
  {
    return "GainNode";
  }

  virtual size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const MOZ_OVERRIDE;
  virtual size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const MOZ_OVERRIDE;

protected:
  virtual ~GainNode();

private:
  static void SendGainToStream(AudioNode* aNode);

private:
  nsRefPtr<AudioParam> mGain;
};

}
}

#endif