AudioParam.setValueCurveAtTime() should copy the curve data

third_party/WebKit/Source/modules/webaudio/AudioParamTimeline.h

 /*
  * 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
@@ skipping 65 matching lines @@
             ExponentialRampToValue,
             SetTarget,
             SetValueCurve,
             LastType
         };
 
         static ParamEvent createLinearRampEvent(float value, double time, float initialValue, double callTime);
         static ParamEvent createExponentialRampEvent(float value, double time, float initialValue, double callTime);
         static ParamEvent createSetValueEvent(float value, double time);
         static ParamEvent createSetTargetEvent(float value, double time, double timeConstant);
-        static ParamEvent createSetValueCurveEvent(DOMFloat32Array* curve, double time, double duration);
+        static ParamEvent createSetValueCurveEvent(const DOMFloat32Array* curve, double time, double duration);
 
         Type getType() const { return m_type; }
         float value() const { return m_value; }
         double time() const { return m_time; }
         double timeConstant() const { return m_timeConstant; }
         double duration() const { return m_duration; }
-        DOMFloat32Array* curve() { return m_curve.get(); }
+        Vector<float>& curve() { return m_curve; }
         float initialValue() const { return m_initialValue; }
         double callTime() const { return m_callTime; }
 
     private:
         ParamEvent(Type type, float value, double time,
-            double timeConstant, double duration, DOMFloat32Array* curve,
-            float initialValue = 0, double callTime = 0)
-            : m_type(type)
-            , m_value(value)
-            , m_time(time)
-            , m_timeConstant(timeConstant)
-            , m_duration(duration)
-            , m_curve(curve)
-            , m_initialValue(initialValue)
-            , m_callTime(callTime)
-        {
-        }
+            double timeConstant, double duration, const DOMFloat32Array* curve,
+            float initialValue = 0, double callTime = 0);
 
         Type m_type;
         float m_value;
         double m_time;
         // Only used for SetTarget events
         double m_timeConstant;
         // Only used for SetValueCurve events.
         double m_duration;
-        CrossThreadPersistent<DOMFloat32Array> m_curve;
+        Vector<float> m_curve;
         // Initial value and time to use for linear and exponential ramps that don't have a
         // preceding event.
         float m_initialValue;
         double m_callTime;
     };
 
     void insertEvent(const ParamEvent&, ExceptionState&);
     float valuesForFrameRangeImpl(size_t startFrame, size_t endFrame, float defaultValue, float* values, unsigned numberOfValues, double sampleRate, double controlRate);
 
     // Produce a nice string describing the event in human-readable form.
     String eventToString(const ParamEvent&);
     Vector<ParamEvent> m_events;
 
     mutable Mutex m_eventsLock;
 };
 
 } // namespace blink
 
 #endif // AudioParamTimeline_h