diff -r 000000000000 -r 6474c204b198 content/media/webaudio/AudioDestinationNode.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/content/media/webaudio/AudioDestinationNode.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,115 @@
+/* -*- 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 AudioDestinationNode_h_
+#define AudioDestinationNode_h_
+
+#include "mozilla/dom/AudioChannelBinding.h"
+#include "AudioNode.h"
+#include "nsIDOMEventListener.h"
+#include "nsIAudioChannelAgent.h"
+#include "AudioChannelCommon.h"
+#include "nsWeakReference.h"
+
+namespace mozilla {
+namespace dom {
+
+class AudioContext;
+
+class AudioDestinationNode : public AudioNode
+                           , public nsIDOMEventListener
+                           , public nsIAudioChannelAgentCallback
+                           , public nsSupportsWeakReference
+                           , public MainThreadMediaStreamListener
+{
+public:
+  // This node type knows what MediaStreamGraph to use based on
+  // whether it's in offline mode.
+  AudioDestinationNode(AudioContext* aContext,
+                       bool aIsOffline,
+                       AudioChannel aChannel = AudioChannel::Normal,
+                       uint32_t aNumberOfChannels = 0,
+                       uint32_t aLength = 0,
+                       float aSampleRate = 0.0f);
+
+  virtual void DestroyMediaStream() MOZ_OVERRIDE;
+
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(AudioDestinationNode, AudioNode)
+  NS_DECL_NSIAUDIOCHANNELAGENTCALLBACK
+
+  virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;
+
+  virtual uint16_t NumberOfOutputs() const MOZ_FINAL MOZ_OVERRIDE
+  {
+    return 0;
+  }
+
+  uint32_t MaxChannelCount() const;
+  virtual void SetChannelCount(uint32_t aChannelCount,
+                               ErrorResult& aRv) MOZ_OVERRIDE;
+
+  void Mute();
+  void Unmute();
+
+  void StartRendering();
+
+  void OfflineShutdown();
+
+  // nsIDOMEventListener
+  NS_IMETHOD HandleEvent(nsIDOMEvent* aEvent);
+
+  AudioChannel MozAudioChannelType() const;
+  void SetMozAudioChannelType(AudioChannel aValue, ErrorResult& aRv);
+
+  virtual void NotifyMainThreadStateChanged() MOZ_OVERRIDE;
+  void FireOfflineCompletionEvent();
+
+  // An amount that should be added to the MediaStream's current time to
+  // get the AudioContext.currentTime.
+  double ExtraCurrentTime();
+
+  // When aIsOnlyNode is true, this is the only node for the AudioContext.
+  void SetIsOnlyNodeForContext(bool aIsOnlyNode);
+
+  virtual const char* NodeType() const
+  {
+    return "AudioDestinationNode";
+  }
+
+  virtual size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const MOZ_OVERRIDE;
+  virtual size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const MOZ_OVERRIDE;
+
+private:
+  bool CheckAudioChannelPermissions(AudioChannel aValue);
+  void CreateAudioChannelAgent();
+
+  void SetCanPlay(bool aCanPlay);
+
+  void NotifyStableState();
+  void ScheduleStableStateNotification();
+
+  SelfReference<AudioDestinationNode> mOfflineRenderingRef;
+  uint32_t mFramesToProduce;
+
+  nsCOMPtr<nsIAudioChannelAgent> mAudioChannelAgent;
+
+  // Audio Channel Type.
+  AudioChannel mAudioChannel;
+  bool mIsOffline;
+  bool mHasFinished;
+
+  TimeStamp mStartedBlockingDueToBeingOnlyNode;
+  double mExtraCurrentTime;
+  double mExtraCurrentTimeSinceLastStartedBlocking;
+  bool mExtraCurrentTimeUpdatedSinceLastStableState;
+};
+
+}
+}
+
+#endif
+