Remove redundancies of multiply() in 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 17 matching lines @@
 // suitable for use on Linux.
 
 #include "config.h"
 
 #if ENABLE(WEB_AUDIO)
 
 #if USE(WEBAUDIO_IPP)
 
 #include "platform/audio/FFTFrame.h"
 
-#include "platform/audio/VectorMath.h"
-
 #include "wtf/MathExtras.h"
 
 namespace WebCore {
 
 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)))
@@ skipping 44 matching lines @@
 void FFTFrame::cleanup()
 {
 }
 
 FFTFrame::~FFTFrame()
 {
     ippsFree(m_buffer);
     ippsDFTFree_R_32f(m_DFTSpec);
 }
 
-void FFTFrame::multiply(const FFTFrame& frame)
-{
-    FFTFrame& frame1 = *this;
-    FFTFrame& frame2 = const_cast<FFTFrame&>(frame);
-
-    float* realP1 = frame1.realData();
-    float* imagP1 = frame1.imagData();
-    const float* realP2 = frame2.realData();
-    const float* imagP2 = frame2.imagData();
-
-    unsigned halfSize = fftSize() / 2;
-    float real0 = realP1[0];
-    float imag0 = imagP1[0];
-
-    VectorMath::zvmul(realP1, imagP1, realP2, imagP2, realP1, imagP1, halfSize);
-
-    // Multiply the packed DC/nyquist component
-    realP1[0] = real0 * realP2[0];
-    imagP1[0] = imag0 * imagP2[0];
-}
-
 void FFTFrame::doFFT(const float* data)
 {
     Ipp32f* complexP = m_complexData.data();
 
     // Compute Forward transform to perm format.
     ippsDFTFwd_RToPerm_32f(reinterpret_cast<Ipp32f*>(const_cast<float*>(data)), complexP, m_DFTSpec, m_buffer);
 
     Ipp32f* realP = m_realData.data();
     Ipp32f* imagP = m_imagData.data();
     ippsCplxToReal_32fc(reinterpret_cast<Ipp32fc*>(complexP), realP, imagP, m_FFTSize >> 1);
@@ skipping 32 matching lines @@
     ippsRealToCplx_32f(realP, imagP, complexP, len);
 
     return const_cast<float*>(m_complexData.data());
 }
 
 } // namespace WebCore
 
 #endif // USE(WEBAUDIO_IPP)
 
 #endif // ENABLE(WEB_AUDIO)