1 files changed, 104 insertions, 0 deletions
diff --git a/dom/media/webaudio/OscillatorNode.h b/dom/media/webaudio/OscillatorNode.h
new file mode 100644
index 000000000..1e17e319e
--- /dev/null
+++ b/dom/media/webaudio/OscillatorNode.h
@@ -0,0 +1,104 @@
+/* -*- 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"
+
+namespace mozilla {
+namespace dom {
+
+class AudioContext;
+
+class OscillatorNode final : public AudioNode,
+                             public MainThreadMediaStreamListener
+{
+public:
+  explicit OscillatorNode(AudioContext* aContext);
+
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(OscillatorNode, AudioNode)
+
+  JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
+
+  void DestroyMediaStream() override;
+
+  uint16_t NumberOfInputs() const final override
+  {
+    return 0;
+  }
+
+  OscillatorType Type() const
+  {
+    return mType;
+  }
+  void SetType(OscillatorType aType, ErrorResult& aRv)
+  {
+    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 Stop(double aWhen, ErrorResult& aRv);
+  void SetPeriodicWave(PeriodicWave& aPeriodicWave)
+  {
+    mPeriodicWave = &aPeriodicWave;
+    // SendTypeToStream will call SendPeriodicWaveToStream for us.
+    mType = OscillatorType::Custom;
+    SendTypeToStream();
+  }
+
+  IMPL_EVENT_HANDLER(ended)
+
+  void NotifyMainThreadStreamFinished() override;
+
+  const char* NodeType() const override
+  {
+    return "OscillatorNode";
+  }
+
+  size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const override;
+  size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const override;
+
+protected:
+  virtual ~OscillatorNode();
+
+private:
+  void SendTypeToStream();
+  void SendPeriodicWaveToStream();
+
+private:
+  OscillatorType mType;
+  RefPtr<PeriodicWave> mPeriodicWave;
+  RefPtr<AudioParam> mFrequency;
+  RefPtr<AudioParam> mDetune;
+  bool mStartCalled;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif
+