Move handle of HRTFDatabaseLoader to AudioListener.

Source/modules/webaudio/PannerNode.h

 /*
  * Copyright (C) 2010, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 10 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef PannerNode_h
 #define PannerNode_h
 
 #include "platform/audio/AudioBus.h"
 #include "platform/audio/Cone.h"
 #include "platform/audio/Distance.h"
-#include "platform/audio/HRTFDatabaseLoader.h"
 #include "platform/audio/Panner.h"
 #include "modules/webaudio/AudioListener.h"
 #include "modules/webaudio/AudioNode.h"
 #include "platform/geometry/FloatPoint3D.h"
 #include "wtf/HashMap.h"
 #include "wtf/OwnPtr.h"
 
 namespace WebCore {
 
+class HRTFDatabaseLoader;
+
 // PannerNode is an AudioNode with one input and one output.
 // It positions a sound in 3D space, with the exact effect dependent on the panning model.
 // It has a position and an orientation in 3D space which is relative to the position and orientation of the context's AudioListener.
 // A distance effect will attenuate the gain as the position moves away from the listener.
 // A cone effect will attenuate the gain as the orientation moves away from the listener.
 // All of these effects follow the OpenAL specification very closely.
 
 class PannerNode FINAL : public AudioNode {
 public:
     // These enums are used to distinguish what cached values of panner are dirty.
@@ skipping 54 matching lines @@
     double dopplerRate();
 
     virtual double tailTime() const OVERRIDE { return m_panner ? m_panner->tailTime() : 0; }
     virtual double latencyTime() const OVERRIDE { return m_panner ? m_panner->latencyTime() : 0; }
 
 private:
     PannerNode(AudioContext*, float sampleRate);
 
     // AudioContext's listener
     AudioListener* listener();
+    HRTFDatabaseLoader* hrtfDatabaseLoader() { return listener()->hrtfDatabaseLoader(); }
 
     bool setPanningModel(unsigned); // Returns true on success.
     bool setDistanceModel(unsigned); // Returns true on success.
 
     void calculateAzimuthElevation(double* outAzimuth, double* outElevation);
     float calculateDistanceConeGain(); // Returns the combined distance and cone gain attenuation.
     double calculateDopplerRate();
 
     void azimuthElevation(double* outAzimuth, double* outElevation);
     float distanceConeGain();
@@ skipping 23 matching lines @@
     DistanceEffect m_distanceEffect;
     ConeEffect m_coneEffect;
     float m_lastGain;
 
     // Cached values
     double m_cachedAzimuth;
     double m_cachedElevation;
     float m_cachedDistanceConeGain;
     double m_cachedDopplerRate;
 
-    RefPtr<HRTFDatabaseLoader> m_hrtfDatabaseLoader;
-
     // AudioContext's connection count
     unsigned m_connectionCount;
 
     // Synchronize process() with setting of the panning model, source's location information, listener, distance parameters and sound cones.
     mutable Mutex m_processLock;
 };
 
 } // namespace WebCore
 
 #endif // PannerNode_h