AudioListener.h - mozsearch

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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 AudioListener_h_

#define AudioListener_h_

#include "nsWrapperCache.h"

#include "nsCycleCollectionParticipant.h"

#include "mozilla/Attributes.h"

#include "ThreeDPoint.h"

#include "AudioContext.h"

#include "PannerNode.h"

#include "WebAudioUtils.h"

#include "js/TypeDecls.h"

#include "mozilla/MemoryReporting.h"

namespace mozilla::dom {

class AudioListenerEngine final {

 public:

  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(AudioListenerEngine)

  AudioListenerEngine();

  enum class AudioListenerParameter {

    POSITION,

    FRONT,  // unit length

    RIGHT   // unit length, orthogonal to FRONT

};

  void RecvListenerEngineEvent(

      AudioListenerEngine::AudioListenerParameter aParameter,

      const ThreeDPoint& aValue);

  const ThreeDPoint& Position() const;

  const ThreeDPoint& FrontVector() const;

  const ThreeDPoint& RightVector() const;

 private:

  ~AudioListenerEngine() = default;

  ThreeDPoint mPosition;

  ThreeDPoint mFrontVector;

  ThreeDPoint mRightVector;

};

class AudioListener final : public nsWrapperCache {

 public:

  explicit AudioListener(AudioContext* aContext);

  NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(AudioListener)

  NS_DECL_CYCLE_COLLECTION_NATIVE_WRAPPERCACHE_CLASS(AudioListener)

  size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;

  AudioContext* GetParentObject() const { return mContext; }

  JSObject* WrapObject(JSContext* aCx,

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

  void SetPosition(double aX, double aY, double aZ);

  void SetOrientation(double aX, double aY, double aZ, double aXUp, double aYUp,

                      double aZUp);

  AudioListenerEngine* Engine() { return mEngine.get(); }

 private:

  void SendListenerEngineEvent(

      AudioListenerEngine::AudioListenerParameter aParameter,

      const ThreeDPoint& aValue);

  ~AudioListener() = default;

 private:

  RefPtr<AudioContext> mContext;

  RefPtr<AudioListenerEngine> mEngine;

  ThreeDPoint mPosition;

  ThreeDPoint mFrontVector;

  ThreeDPoint mRightVector;

};

}  // namespace mozilla::dom

#endif