Implement tail processing for AudioNodes

third_party/WebKit/Source/platform/audio/HRTFPanner.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 43 matching lines @@
 
   void Reset() override;
 
   size_t FftSize() const { return FftSizeForSampleRate(sample_rate_); }
   static size_t FftSizeForSampleRate(float sample_rate);
 
   float SampleRate() const { return sample_rate_; }
 
   double TailTime() const override;
   double LatencyTime() const override;
+  bool RequiresTailProcessing() const override;
 
  private:
   // Given an azimuth angle in the range -180 -> +180, returns the corresponding
   // azimuth index for the database, and azimuthBlend which is an interpolation
   // value from 0 -> 1.
   int CalculateDesiredAzimuthIndexAndBlend(double azimuth,
                                            double& azimuth_blend);
 
   RefPtr<HRTFDatabaseLoader> database_loader_;
 
@@ skipping 40 matching lines @@
 
   AudioFloatArray temp_l1_;
   AudioFloatArray temp_r1_;
   AudioFloatArray temp_l2_;
   AudioFloatArray temp_r2_;
 };
 
 }  // namespace blink
 
 #endif  // HRTFPanner_h