diff -r 000000000000 -r 6474c204b198 content/media/webaudio/OscillatorNode.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/content/media/webaudio/OscillatorNode.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,147 @@
+/* -*- 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 OscillatorNode_h_
+#define OscillatorNode_h_
+
+#include "AudioNode.h"
+#include "AudioParam.h"
+#include "PeriodicWave.h"
+#include "mozilla/dom/OscillatorNodeBinding.h"
+#include "mozilla/Preferences.h"
+
+namespace mozilla {
+namespace dom {
+
+class AudioContext;
+
+class OscillatorNode : public AudioNode,
+                       public MainThreadMediaStreamListener
+{
+public:
+  explicit OscillatorNode(AudioContext* aContext);
+  virtual ~OscillatorNode();
+
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(OscillatorNode, AudioNode)
+
+  virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;
+
+  virtual void DestroyMediaStream() MOZ_OVERRIDE
+  {
+    if (mStream) {
+      mStream->RemoveMainThreadListener(this);
+    }
+    AudioNode::DestroyMediaStream();
+  }
+  virtual uint16_t NumberOfInputs() const MOZ_FINAL MOZ_OVERRIDE
+  {
+    return 0;
+  }
+
+  OscillatorType Type() const
+  {
+    return mType;
+  }
+  void SetType(OscillatorType aType, ErrorResult& aRv)
+  {
+    if (!Preferences::GetBool("media.webaudio.legacy.OscillatorNode")) {
+      // Do not accept the alternate enum values unless the legacy pref
+      // has been turned on.
+      switch (aType) {
+      case OscillatorType::_0:
+      case OscillatorType::_1:
+      case OscillatorType::_2:
+      case OscillatorType::_3:
+      case OscillatorType::_4:
+        // Do nothing in order to emulate setting an invalid enum value.
+        return;
+      default:
+        // Shut up the compiler warning
+        break;
+      }
+    }
+
+    // Handle the alternate enum values
+    switch (aType) {
+    case OscillatorType::_0: aType = OscillatorType::Sine; break;
+    case OscillatorType::_1: aType = OscillatorType::Square; break;
+    case OscillatorType::_2: aType = OscillatorType::Sawtooth; break;
+    case OscillatorType::_3: aType = OscillatorType::Triangle; break;
+    case OscillatorType::_4: aType = OscillatorType::Custom; break;
+    default:
+      // Shut up the compiler warning
+      break;
+    }
+    if (aType == OscillatorType::Custom) {
+      // ::Custom can only be set by setPeriodicWave().
+      // https://github.com/WebAudio/web-audio-api/issues/105 for exception.
+      aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
+      return;
+    }
+    mType = aType;
+    SendTypeToStream();
+  }
+
+  AudioParam* Frequency() const
+  {
+    return mFrequency;
+  }
+  AudioParam* Detune() const
+  {
+    return mDetune;
+  }
+
+  void Start(double aWhen, ErrorResult& aRv);
+  void NoteOn(double aWhen, ErrorResult& aRv)
+  {
+    Start(aWhen, aRv);
+  }
+  void Stop(double aWhen, ErrorResult& aRv);
+  void NoteOff(double aWhen, ErrorResult& aRv)
+  {
+    Stop(aWhen, aRv);
+  }
+  void SetPeriodicWave(PeriodicWave& aPeriodicWave)
+  {
+    mPeriodicWave = &aPeriodicWave;
+    // SendTypeToStream will call SendPeriodicWaveToStream for us.
+    mType = OscillatorType::Custom;
+    SendTypeToStream();
+  }
+
+  IMPL_EVENT_HANDLER(ended)
+
+  virtual void NotifyMainThreadStateChanged() MOZ_OVERRIDE;
+
+  virtual const char* NodeType() const
+  {
+    return "OscillatorNode";
+  }
+
+  virtual size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const MOZ_OVERRIDE;
+  virtual size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const MOZ_OVERRIDE;
+
+private:
+  static void SendFrequencyToStream(AudioNode* aNode);
+  static void SendDetuneToStream(AudioNode* aNode);
+  void SendTypeToStream();
+  void SendPeriodicWaveToStream();
+
+private:
+  OscillatorType mType;
+  nsRefPtr<PeriodicWave> mPeriodicWave;
+  nsRefPtr<AudioParam> mFrequency;
+  nsRefPtr<AudioParam> mDetune;
+  bool mStartCalled;
+  bool mStopped;
+};
+
+}
+}
+
+#endif
+