Split "Online" and "Offline" AudioContext processing

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 11 matching lines @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #if ENABLE(WEB_AUDIO)
 #include "modules/webaudio/ConvolverNode.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "core/dom/ExceptionCode.h"
 #include "modules/webaudio/AudioBuffer.h"
-#include "modules/webaudio/AudioContext.h"
 #include "modules/webaudio/AudioNodeInput.h"
 #include "modules/webaudio/AudioNodeOutput.h"
 #include "platform/audio/Reverb.h"
 #include "wtf/MainThread.h"
 
 // Note about empirical tuning:
 // The maximum FFT size affects reverb performance and accuracy.
 // If the reverb is single-threaded and processes entirely in the real-time audio thread,
 // it's important not to make this too high.  In this case 8192 is a good value.
 // But, the Reverb object is multi-threaded, so we want this as high as possible without losing too much accuracy.
@@ skipping 77 matching lines @@
 
     // Wrap the AudioBuffer by an AudioBus. It's an efficient pointer set and not a memcpy().
     // This memory is simply used in the Reverb constructor and no reference to it is kept for later use in that class.
     RefPtr<AudioBus> bufferBus = AudioBus::create(numberOfChannels, bufferLength, false);
     for (unsigned i = 0; i < numberOfChannels; ++i)
         bufferBus->setChannelMemory(i, buffer->getChannelData(i)->data(), bufferLength);
 
     bufferBus->setSampleRate(buffer->sampleRate());
 
     // Create the reverb with the given impulse response.
-    bool useBackgroundThreads = !context()->isOfflineContext();
-    OwnPtr<Reverb> reverb = adoptPtr(new Reverb(bufferBus.get(), ProcessingSizeInFrames, MaxFFTSize, 2, useBackgroundThreads, m_normalize));
+    OwnPtr<Reverb> reverb = adoptPtr(new Reverb(bufferBus.get(), ProcessingSizeInFrames, MaxFFTSize, 2, context() && context()->hasRealtimeConstraint(), m_normalize));
 
     {
         // Synchronize with process().
         MutexLocker locker(m_processLock);
         m_reverb = reverb.release();
         m_buffer = buffer;
     }
 }
 
 AudioBuffer* ConvolverHandler::buffer()
@@ skipping 17 matching lines @@
     MutexTryLocker tryLocker(m_processLock);
     if (tryLocker.locked())
         return m_reverb ? m_reverb->latencyFrames() / static_cast<double>(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();
 }
 
 // ----------------------------------------------------------------
 
-ConvolverNode::ConvolverNode(AudioContext& context, float sampleRate)
+ConvolverNode::ConvolverNode(AbstractAudioContext& context, float sampleRate)
     : AudioNode(context)
 {
     setHandler(ConvolverHandler::create(*this, sampleRate));
 }
 
-ConvolverNode* ConvolverNode::create(AudioContext& context, float sampleRate)
+ConvolverNode* ConvolverNode::create(AbstractAudioContext& context, float sampleRate)
 {
     return new ConvolverNode(context, sampleRate);
 }
 
 ConvolverHandler& ConvolverNode::convolverHandler() const
 {
     return static_cast<ConvolverHandler&>(handler());
 }
 
 AudioBuffer* ConvolverNode::buffer() const
@@ skipping 12 matching lines @@
 }
 
 void ConvolverNode::setNormalize(bool normalize)
 {
     convolverHandler().setNormalize(normalize);
 }
 
 } // namespace blink
 
 #endif // ENABLE(WEB_AUDIO)