Clamp AudioParam automations to the nominal range.

third_party/WebKit/Source/modules/webaudio/AudioParam.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
@@ skipping 130 matching lines @@
     NOTREACHED();
     return "UnknownNode.unknownAudioParam";
 }
 
 float AudioParamHandler::value()
 {
     // Update value for timeline.
     float v = intrinsicValue();
     if (deferredTaskHandler().isAudioThread()) {
         bool hasValue;
-        float timelineValue = m_timeline.valueForContextTime(destinationHandler(), v, hasValue);
+        float timelineValue = m_timeline.valueForContextTime(destinationHandler(), v, hasValue, minValue(), maxValue());
 
         if (hasValue)
             v = timelineValue;
     }
 
     setIntrinsicValue(v);
     return v;
 }
 
 void AudioParamHandler::setIntrinsicValue(float newValue)
@@ skipping 11 matching lines @@
 float AudioParamHandler::smoothedValue()
 {
     return m_smoothedValue;
 }
 
 bool AudioParamHandler::smooth()
 {
     // If values have been explicitly scheduled on the timeline, then use the exact value.
     // Smoothing effectively is performed by the timeline.
     bool useTimelineValue = false;
-    float value = m_timeline.valueForContextTime(destinationHandler(), intrinsicValue(), useTimelineValue);
+    float value = m_timeline.valueForContextTime(destinationHandler(), intrinsicValue(), useTimelineValue, minValue(), maxValue());
 
     if (m_smoothedValue == value) {
         // Smoothed value has already approached and snapped to value.
         setIntrinsicValue(value);
         return true;
     }
 
     if (useTimelineValue) {
         m_smoothedValue = value;
     } else {
@@ skipping 37 matching lines @@
 
     // The calculated result will be the "intrinsic" value summed with all audio-rate connections.
 
     if (sampleAccurate) {
         // Calculate sample-accurate (a-rate) intrinsic values.
         calculateTimelineValues(values, numberOfValues);
     } else {
         // Calculate control-rate (k-rate) intrinsic value.
         bool hasValue;
         float value = intrinsicValue();
-        float timelineValue = m_timeline.valueForContextTime(destinationHandler(), value, hasValue);
+        float timelineValue = m_timeline.valueForContextTime(destinationHandler(), value, hasValue, minValue(), maxValue());
 
         if (hasValue)
             value = timelineValue;
 
         values[0] = value;
         setIntrinsicValue(value);
     }
 
     // Now sum all of the audio-rate connections together (unity-gain summing junction).
     // Note that connections would normally be mono, but we mix down to mono if necessary.
@@ skipping 15 matching lines @@
 void AudioParamHandler::calculateTimelineValues(float* values, unsigned numberOfValues)
 {
     // Calculate values for this render quantum.  Normally numberOfValues will
     // equal to AudioHandler::ProcessingSizeInFrames (the render quantum size).
     double sampleRate = destinationHandler().sampleRate();
     size_t startFrame = destinationHandler().currentSampleFrame();
     size_t endFrame = startFrame + numberOfValues;
 
     // Note we're running control rate at the sample-rate.
     // Pass in the current value as default value.
-    setIntrinsicValue(m_timeline.valuesForFrameRange(startFrame, endFrame, intrinsicValue(), values, numberOfValues, sampleRate, sampleRate));
+    setIntrinsicValue(m_timeline.valuesForFrameRange(startFrame, endFrame, intrinsicValue(), values, numberOfValues, sampleRate, sampleRate, minValue(), maxValue()));
 }
 
 void AudioParamHandler::connect(AudioNodeOutput& output)
 {
     ASSERT(deferredTaskHandler().isGraphOwner());
 
     if (m_outputs.contains(&output))
         return;
 
     output.addParam(*this);
@@ skipping 208 matching lines @@
 }
 
 AudioParam* AudioParam::cancelScheduledValues(double startTime, ExceptionState& exceptionState)
 {
     handler().timeline().cancelScheduledValues(startTime, exceptionState);
     return this;
 }
 
 } // namespace blink