Implement Automations for PannerNode and AutioListener

third_party/WebKit/Source/platform/audio/EqualPowerPanner.h

Index: third_party/WebKit/Source/platform/audio/EqualPowerPanner.h
diff --git a/third_party/WebKit/Source/platform/audio/EqualPowerPanner.h b/third_party/WebKit/Source/platform/audio/EqualPowerPanner.h
index 418dd8c7ca858efd29ee2e46e311d81ef1239dd7..d42631673f9288b5b8cfc49db35d69ad4db94abc 100644
--- a/third_party/WebKit/Source/platform/audio/EqualPowerPanner.h
+++ b/third_party/WebKit/Source/platform/audio/EqualPowerPanner.h
@@ -36,19 +36,15 @@ public:
     EqualPowerPanner(float sampleRate);
 
     void pan(double azimuth, double elevation, const AudioBus* inputBus, AudioBus* outputBuf, size_t framesToProcess) override;
+    void panWithSampleAccurateValues(double* azimuth, double* elevation, const AudioBus* inputBus, AudioBus* outputBus, size_t framesToProcess) override;
 
-    void reset() override { m_isFirstRender = true; }
+    void reset() override { }

[hongchan, 2016/05/03 18:15:01]

If this doesn't do anything, why it's here?

[Raymond Toy, 2016/05/03 20:32:21]

reset() is abstract virtual function defined in Panner.h.

[hongchan, 2016/05/03 20:38:58]

Got it. Confirmed this is a 'thing' in our chromium code base.

 
     double tailTime() const override { return 0; }
     double latencyTime() const override { return 0; }
 
 private:
-    // For smoothing / de-zippering
-    bool m_isFirstRender;
-    double m_smoothingConstant;
-
-    double m_gainL;
-    double m_gainR;
+    void calculateDesiredGain(double& desiredGainL, double& desiredGainR, double azimuth, int numberOfChannels);
 };
 
 } // namespace blink