Use FFT from FFMpeg for OSX

third_party/WebKit/Source/platform/audio/FFTFrame.h

 /*
  * 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 18 matching lines @@
 #ifndef FFTFrame_h
 #define FFTFrame_h
 
 #include "platform/PlatformExport.h"
 #include "platform/audio/AudioArray.h"
 #include "wtf/Allocator.h"
 #include "wtf/Forward.h"
 #include "wtf/Threading.h"
 #include <memory>
 
-#if OS(MACOSX)
-#include <Accelerate/Accelerate.h>
-#elif USE(WEBAUDIO_OPENMAX_DL_FFT)
+#if USE(WEBAUDIO_OPENMAX_DL_FFT)
 #include <dl/sp/api/omxSP.h>
 #elif USE(WEBAUDIO_FFMPEG)
 struct RDFTContext;
 #endif
 
 namespace blink {
 
 // Defines the interface for an "FFT frame", an object which is able to perform
 // a forward and reverse FFT, internally storing the resultant frequency-domain
 // data.
@@ skipping 40 matching lines @@
  private:
   void interpolateFrequencyComponents(const FFTFrame& frame1,
                                       const FFTFrame& frame2,
                                       double x);
 
   unsigned m_FFTSize;
   unsigned m_log2FFTSize;
   AudioFloatArray m_realData;
   AudioFloatArray m_imagData;
 
-#if OS(MACOSX)
-  DSPSplitComplex& dspSplitComplex() { return m_frame; }
-  DSPSplitComplex dspSplitComplex() const { return m_frame; }
-  static FFTSetup fftSetupForSize(unsigned fftSize);
-  static FFTSetup* fftSetups;
-  FFTSetup m_FFTSetup;
-  DSPSplitComplex m_frame;
-#elif USE(WEBAUDIO_FFMPEG)
+#if USE(WEBAUDIO_FFMPEG)
   static RDFTContext* contextForSize(unsigned fftSize, int trans);
   RDFTContext* m_forwardContext;
   RDFTContext* m_inverseContext;
   float* getUpToDateComplexData();
   AudioFloatArray m_complexData;
 #elif USE(WEBAUDIO_OPENMAX_DL_FFT)
   static OMXFFTSpec_R_F32* contextForSize(unsigned log2FFTSize);
   OMXFFTSpec_R_F32* m_forwardContext;
   OMXFFTSpec_R_F32* m_inverseContext;
   AudioFloatArray m_complexData;
 #endif
 };
 
 }  // namespace blink
 
 #endif  // FFTFrame_h