Implement tail processing for AudioNodes

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

 /*
  * Copyright (C) 2011, 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 103 matching lines @@
 
 void DynamicsCompressorHandler::Initialize() {
   if (IsInitialized())
     return;
 
   AudioHandler::Initialize();
   dynamics_compressor_ = WTF::WrapUnique(new DynamicsCompressor(
       Context()->sampleRate(), defaultNumberOfOutputChannels));
 }
 
-void DynamicsCompressorHandler::ClearInternalStateWhenDisabled() {
-  reduction_ = 0;
+bool DynamicsCompressorHandler::RequiresTailProcessing() const {
+  // Always return true even if the tail time and latency might both
+  // be zero.
+  return true;
 }
 
 double DynamicsCompressorHandler::TailTime() const {
   return dynamics_compressor_->TailTime();
 }
 
 double DynamicsCompressorHandler::LatencyTime() const {
   return dynamics_compressor_->LatencyTime();
 }
 
@@ skipping 96 matching lines @@
 
 AudioParam* DynamicsCompressorNode::attack() const {
   return attack_;
 }
 
 AudioParam* DynamicsCompressorNode::release() const {
   return release_;
 }
 
 }  // namespace blink