Split "Online" and "Offline" AudioContext processing

Source/modules/webaudio/PannerNode.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 12 matching lines @@
  */
 
 #include "config.h"
 #if ENABLE(WEB_AUDIO)
 #include "modules/webaudio/PannerNode.h"
 
 #include "bindings/core/v8/ExceptionMessages.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/ExecutionContext.h"
+#include "modules/webaudio/AbstractAudioContext.h"
 #include "modules/webaudio/AudioBufferSourceNode.h"
-#include "modules/webaudio/AudioContext.h"
 #include "modules/webaudio/AudioNodeInput.h"
 #include "modules/webaudio/AudioNodeOutput.h"
 #include "platform/audio/HRTFPanner.h"
 #include "wtf/MathExtras.h"
 
 namespace blink {
 
 static void fixNANs(double& x)
 {
     if (std::isnan(x) || std::isinf(x))
@@ skipping 55 matching lines @@
     if (!source) {
         destination->zero();
         return;
     }
 
     // The audio thread can't block on this lock, so we call tryLock() instead.
     MutexTryLocker tryLocker(m_processLock);
     MutexTryLocker tryListenerLocker(listener()->listenerLock());
 
     if (tryLocker.locked() && tryListenerLocker.locked()) {
-        // HRTFDatabase should be loaded before proceeding for offline audio context when the panning model is HRTF.
+        // HRTFDatabase should be loaded before proceeding when the panning model is HRTF.
         if (m_panningModel == Panner::PanningModelHRTF && !listener()->isHRTFDatabaseLoaded()) {
-            if (context()->isOfflineContext()) {
-                listener()->waitForHRTFDatabaseLoaderThreadCompletion();
-            } else {
+            if (context()->hasRealtimeConstraint()) {
+                // Some AbstractAudioContexts cannot block on the HRTFDatabase loader.
                 destination->zero();
                 return;
             }
+
+            listener()->waitForHRTFDatabaseLoaderThreadCompletion();
         }
 
         // Apply the panning effect.
         double azimuth;
         double elevation;
         azimuthElevation(&azimuth, &elevation);
 
         m_panner->pan(azimuth, elevation, source, destination, framesToProcess);
 
         // Get the distance and cone gain.
@@ skipping 394 matching lines @@
     if (dirty & PannerHandler::DistanceConeGainDirty)
         m_isDistanceConeGainDirty = true;
 
     if (dirty & PannerHandler::DopplerRateDirty)
         m_isDopplerRateDirty = true;
 }
 
 void PannerHandler::setChannelCount(unsigned long channelCount, ExceptionState& exceptionState)
 {
     ASSERT(isMainThread());
-    AudioContext::AutoLocker locker(context());
+    AbstractAudioContext::AutoLocker locker(context());
 
     // A PannerNode only supports 1 or 2 channels
     if (channelCount > 0 && channelCount <= 2) {
         if (m_channelCount != channelCount) {
             m_channelCount = channelCount;
             if (m_channelCountMode != Max)
                 updateChannelsForInputs();
         }
     } else {
         exceptionState.throwDOMException(
             NotSupportedError,
             ExceptionMessages::indexOutsideRange<unsigned long>(
                 "channelCount",
                 channelCount,
                 1,
                 ExceptionMessages::InclusiveBound,
                 2,
                 ExceptionMessages::InclusiveBound));
     }
 }
 
 void PannerHandler::setChannelCountMode(const String& mode, ExceptionState& exceptionState)
 {
     ASSERT(isMainThread());
-    AudioContext::AutoLocker locker(context());
+    AbstractAudioContext::AutoLocker locker(context());
 
     ChannelCountMode oldMode = m_channelCountMode;
 
     if (mode == "clamped-max") {
         m_newChannelCountMode = ClampedMax;
     } else if (mode == "explicit") {
         m_newChannelCountMode = Explicit;
     } else if (mode == "max") {
         // This is not supported for a PannerNode, which can only handle 1 or 2 channels.
         exceptionState.throwDOMException(
             NotSupportedError,
                 "Panner: 'max' is not allowed");
         m_newChannelCountMode = oldMode;
     } else {
         // Do nothing for other invalid values.
         m_newChannelCountMode = oldMode;
     }
 
     if (m_newChannelCountMode != oldMode)
         context()->deferredTaskHandler().addChangedChannelCountMode(this);
 }
 
 // ----------------------------------------------------------------
 
-PannerNode::PannerNode(AudioContext& context, float sampelRate)
+PannerNode::PannerNode(AbstractAudioContext& context, float sampelRate)
     : AudioNode(context)
 {
     setHandler(PannerHandler::create(*this, sampelRate));
 }
 
-PannerNode* PannerNode::create(AudioContext& context, float sampleRate)
+PannerNode* PannerNode::create(AbstractAudioContext& context, float sampleRate)
 {
     return new PannerNode(context, sampleRate);
 }
 
 PannerHandler& PannerNode::pannerHandler() const
 {
     return static_cast<PannerHandler&>(handler());
 }
 
 String PannerNode::panningModel() const
@@ skipping 87 matching lines @@
 }
 
 void PannerNode::setConeOuterGain(double gain)
 {
     pannerHandler().setConeOuterGain(gain);
 }
 
 } // namespace blink
 
 #endif // ENABLE(WEB_AUDIO)