Implement tail processing for AudioNodes

third_party/WebKit/Source/modules/webaudio/BiquadDSPKernel.cpp

 /*
  * 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 190 matching lines @@
     gain = GetBiquadProcessor()->Parameter3().Value();
     detune = GetBiquadProcessor()->Parameter4().Value();
   }
 
   UpdateCoefficients(1, &cutoff_frequency, &q, &gain, &detune);
 
   biquad_.GetFrequencyResponse(n_frequencies, frequency.data(), mag_response,
                                phase_response);
 }
 
+bool BiquadDSPKernel::RequiresTailProcessing() const {
+  // Always return true even if the tail time and latency might both
+  // be zero.
+  return true;
+}
+
 double BiquadDSPKernel::TailTime() const {
   return tail_time_;
 }
 
 double BiquadDSPKernel::LatencyTime() const {
   return 0;
 }
 
 }  // namespace blink