Clamp AudioParam automations to the nominal range.

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 36 matching lines @@
 
     void setValueAtTime(float value, double time, ExceptionState&);
     void linearRampToValueAtTime(float value, double time, float initialValue, double callTime, ExceptionState&);
     void exponentialRampToValueAtTime(float value, double time,  float initialValue, double callTime, ExceptionState&);
     void setTargetAtTime(float target, double time, double timeConstant, ExceptionState&);
     void setValueCurveAtTime(DOMFloat32Array* curve, double time, double duration, ExceptionState&);
     void cancelScheduledValues(double startTime, ExceptionState&);
 
     // hasValue is set to true if a valid timeline value is returned.
     // otherwise defaultValue is returned.
-    float valueForContextTime(AudioDestinationHandler&, float defaultValue, bool& hasValue);
+    float valueForContextTime(AudioDestinationHandler&, float defaultValue, bool& hasValue, float minValue, float maxValue);
 
     // Given the time range in frames, calculates parameter values into the values buffer and
     // returns the last parameter value calculated for "values" or the defaultValue if none were
     // calculated.  controlRate is the rate (number per second) at which parameter values will be
     // calculated.  It should equal sampleRate for sample-accurate parameter changes, and otherwise
     // will usually match the render quantum size such that the parameter value changes once per
     // render quantum.
-    float valuesForFrameRange(size_t startFrame, size_t endFrame, float defaultValue, float* values, unsigned numberOfValues, double sampleRate, double controlRate);
+    float valuesForFrameRange(size_t startFrame, size_t endFrame, float defaultValue, float* values, unsigned numberOfValues, double sampleRate, double controlRate, float minValue, float maxValue);
 
     // Returns true if this AudioParam has any events on it.
     bool hasValues() const;
 
 private:
     class ParamEvent {
     public:
         enum Type {
             SetValue,
             LinearRampToValue,
@@ skipping 43 matching lines @@
     // 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