1 files changed, 85 insertions, 0 deletions
diff --git a/dom/media/webaudio/AudioListener.h b/dom/media/webaudio/AudioListener.h
new file mode 100644
index 0000000000..7d7fad3bfb
--- /dev/null
+++ b/dom/media/webaudio/AudioListener.h
@@ -0,0 +1,85 @@
+/* -*- 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