1 files changed, 16 insertions, 2 deletions
diff --git a/WebCore/webaudio/AudioContext.h b/WebCore/webaudio/AudioContext.h
index 9fe1347..b79cd14 100644
--- a/WebCore/webaudio/AudioContext.h
+++ b/WebCore/webaudio/AudioContext.h
@@ -29,6 +29,7 @@
 #include "AudioBus.h"
 #include "AudioDestinationNode.h"
 #include "HRTFDatabaseLoader.h"
+#include <wtf/HashSet.h>
 #include <wtf/OwnPtr.h>
 #include <wtf/PassRefPtr.h>
 #include <wtf/RefCounted.h>
@@ -107,6 +108,9 @@ public:
     // When a source node has no more processing to do (has finished playing), then it tells the context to dereference it.
     void notifyNodeFinishedProcessing(AudioNode*);
 
+    // Called at the start of each render quantum.
+    void handlePreRenderTasks();
+
     // Called at the end of each render quantum.
     void handlePostRenderTasks();
 
@@ -132,7 +136,7 @@ public:
     
     void setAudioThread(ThreadIdentifier thread) { m_audioThread = thread; } // FIXME: check either not initialized or the same
     ThreadIdentifier audioThread() const { return m_audioThread; }
-    bool isAudioThread();
+    bool isAudioThread() const;
 
     // Returns true only after the audio thread has been started and then shutdown.
     bool isAudioThreadFinished() { return m_isAudioThreadFinished; }
@@ -147,7 +151,7 @@ public:
     void unlock();
 
     // Returns true if this thread owns the context's lock.
-    bool isGraphOwner();
+    bool isGraphOwner() const;
 
     class AutoLocker {
     public:
@@ -173,6 +177,10 @@ public:
 
     // In the audio thread at the start of each render cycle, we'll call handleDeferredFinishDerefs().
     void handleDeferredFinishDerefs();
+
+    // Only accessed when the graph lock is held.
+    void markAudioNodeInputDirty(AudioNodeInput*);
+    void markAudioNodeOutputDirty(AudioNodeOutput*);
     
 private:
     AudioContext(Document*);
@@ -214,6 +222,12 @@ private:
     Vector<AudioNode*> m_nodesToDelete;
 
     Vector<RefPtr<CachedAudio> > m_cachedAudioReferences;
+    
+    // Only accessed when the graph lock is held.
+    HashSet<AudioNodeInput*> m_dirtyAudioNodeInputs;
+    HashSet<AudioNodeOutput*> m_dirtyAudioNodeOutputs;
+    void handleDirtyAudioNodeInputs();
+    void handleDirtyAudioNodeOutputs();
 
     OwnPtr<AudioBus> m_temporaryMonoBus;
     OwnPtr<AudioBus> m_temporaryStereoBus;