Change members's order and combine duplicated method for FFTFrame.

Source/platform/audio/ipp/FFTFrameIPP.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  * Copyright (C) 2012 Intel 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.
@@ skipping 27 matching lines @@
 #include "wtf/MathExtras.h"
 
 namespace blink {
 
 const unsigned maximumFFTPower2Size = 24;
 
 // Normal constructor: allocates for a given fftSize.
 FFTFrame::FFTFrame(unsigned fftSize)
     : m_FFTSize(fftSize)
     , m_log2FFTSize(static_cast<unsigned>(log2(fftSize)))
-    , m_complexData(fftSize)
     , m_realData(fftSize / 2)
     , m_imagData(fftSize / 2)
+    , m_complexData(fftSize)
 {
     // We only allow power of two.
     ASSERT(1UL << m_log2FFTSize == m_FFTSize);
     ASSERT(m_log2FFTSize <= maximumFFTPower2Size);
 
     ippsDFTInitAlloc_R_32f(&m_DFTSpec, m_FFTSize, IPP_FFT_NODIV_BY_ANY, ippAlgHintFast);
     int bufferSize = 0;
     ippsDFTGetBufSize_R_32f(m_DFTSpec, &bufferSize);
     m_buffer = ippsMalloc_8u(bufferSize);
 }
 
 // Creates a blank/empty frame (interpolate() must later be called).
 FFTFrame::FFTFrame()
     : m_FFTSize(0)
     , m_log2FFTSize(0)
 {
 }
 
 // Copy constructor.
 FFTFrame::FFTFrame(const FFTFrame& frame)
     : m_FFTSize(frame.m_FFTSize)
     , m_log2FFTSize(frame.m_log2FFTSize)
-    , m_complexData(frame.m_FFTSize)
     , m_realData(frame.m_FFTSize / 2)
     , m_imagData(frame.m_FFTSize / 2)
+    , m_complexData(frame.m_FFTSize)
 {
     ippsDFTInitAlloc_R_32f(&m_DFTSpec, m_FFTSize, IPP_FFT_NODIV_BY_ANY, ippAlgHintFast);
     int bufferSize = 0;
     ippsDFTGetBufSize_R_32f(m_DFTSpec, &bufferSize);
     m_buffer = ippsMalloc_8u(bufferSize);
 
     // Copy/setup frame data.
     unsigned numberOfBytes = sizeof(float) * m_FFTSize;
     memcpy(realData(), frame.realData(), numberOfBytes);
     memcpy(imagData(), frame.imagData(), numberOfBytes);
@@ skipping 31 matching lines @@
 
     // Compute inverse transform.
     ippsDFTInv_PermToR_32f(complexP, reinterpret_cast<Ipp32f*>(data), m_DFTSpec, m_buffer);
 
     // Scale so that a forward then inverse FFT yields exactly the original data.
     const float scale = 1.0 / m_FFTSize;
 
     ippsMulC_32f_I(scale, reinterpret_cast<Ipp32f*>(data), m_FFTSize);
 }
 
-float* FFTFrame::realData() const
-{
-    return const_cast<float*>(m_realData.data());
-}
-
-float* FFTFrame::imagData() const
-{
-    return const_cast<float*>(m_imagData.data());
-}
-
 float* FFTFrame::getUpToDateComplexData()
 {
     int len = m_FFTSize >> 1;
     // Merge the real and imagimary vectors to complex vector.
     Ipp32f* realP = m_realData.data();
     Ipp32f* imagP = m_imagData.data();
     Ipp32fc* complexP = reinterpret_cast<Ipp32fc*>(m_complexData.data());
     ippsRealToCplx_32f(realP, imagP, complexP, len);
 
     return const_cast<float*>(m_complexData.data());
 }
 
 } // namespace blink
 
 #endif // USE(WEBAUDIO_IPP)
 
 #endif // ENABLE(WEB_AUDIO)