Extending supported sample rate from 3.0KHz to 192.0KHz for OfflineAudioContext.

Source/modules/webaudio/AudioContext.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 62 matching lines @@
 #include "wtf/PassOwnPtr.h"
 #include "wtf/text/WTFString.h"
 
 // FIXME: check the proper way to reference an undefined thread ID
 const WTF::ThreadIdentifier UndefinedThreadIdentifier = 0xffffffff;
 
 namespace blink {
 
 bool AudioContext::isSampleRateRangeGood(float sampleRate)
 {
-    // FIXME: It would be nice if the minimum sample-rate could be less than 44.1KHz,
-    // but that will require some fixes in HRTFPanner::fftSizeForSampleRate(), and some testing there.
-    return sampleRate >= 44100 && sampleRate <= 96000;
+    return sampleRate >= AudioBuffer::minAllowedSampleRate() && sampleRate <= AudioBuffer::maxAllowedSampleRate();
 }
 
 // Don't allow more than this number of simultaneous AudioContexts talking to hardware.
 const unsigned MaxHardwareContexts = 6;
 unsigned AudioContext::s_hardwareContextCount = 0;
 
 AudioContext* AudioContext::create(Document& document, ExceptionState& exceptionState)
 {
     ASSERT(isMainThread());
     if (s_hardwareContextCount >= MaxHardwareContexts) {
@@ skipping 794 matching lines @@
     visitor->trace(m_listener);
     visitor->trace(m_referencedNodes);
     visitor->trace(m_liveNodes);
     visitor->trace(m_liveAudioSummingJunctions);
     EventTargetWithInlineData::trace(visitor);
 }
 
 } // namespace blink
 
 #endif // ENABLE(WEB_AUDIO)