Implement tail processing for AudioNodes

third_party/WebKit/Source/modules/webaudio/ConvolverNode.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 146 matching lines @@
           Input(0).NumberOfChannels(), buffer_->numberOfChannels()));
     }
   }
 }
 
 AudioBuffer* ConvolverHandler::Buffer() {
   DCHECK(IsMainThread());
   return buffer_.Get();
 }
 
+bool ConvolverHandler::RequiresTailProcessing() const {
+  // Always return true even if the tail time and latency might both
+  // be zero.
+  return true;
+}
+
 double ConvolverHandler::TailTime() const {
   MutexTryLocker try_locker(process_lock_);
   if (try_locker.Locked())
     return reverb_ ? reverb_->ImpulseResponseLength() /
                          static_cast<double>(Context()->sampleRate())
                    : 0;
   // Since we don't want to block the Audio Device thread, we return a large
   // value instead of trying to acquire the lock.
   return std::numeric_limits<double>::infinity();
 }
@@ skipping 125 matching lines @@
 
 bool ConvolverNode::normalize() const {
   return GetConvolverHandler().Normalize();
 }
 
 void ConvolverNode::setNormalize(bool normalize) {
   GetConvolverHandler().SetNormalize(normalize);
 }
 
 }  // namespace blink