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Updated SoundTouch library to 1.8.1 [r198]

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This commit is contained in:
skidau
2014-09-04 20:41:45 +10:00
parent 7a01effe94
commit ba2bec1c0a
27 changed files with 1417 additions and 698 deletions
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21
Externals/soundtouch/sse_optimized.cpp vendored
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@@ -23,10 +23,10 @@
///
////////////////////////////////////////////////////////////////////////////////
//
// Last changed : $Date: 2012-11-08 18:53:01 +0000 (Thu, 08 Nov 2012) $
// Last changed : $Date: 2014-01-08 05:25:40 +1100 (Wed, 08 Jan 2014) $
// File revision : $Revision: 4 $
//
// $Id: sse_optimized.cpp 160 2012-11-08 18:53:01Z oparviai $
// $Id: sse_optimized.cpp 184 2014-01-07 18:25:40Z oparviai $
//
////////////////////////////////////////////////////////////////////////////////
//
@@ -71,7 +71,7 @@ using namespace soundtouch;
#include <math.h>
// Calculates cross correlation of two buffers
double TDStretchSSE::calcCrossCorr(const float *pV1, const float *pV2) const
double TDStretchSSE::calcCrossCorr(const float *pV1, const float *pV2, double &norm) const
{
int i;
const float *pVec1;
@@ -141,11 +141,10 @@ double TDStretchSSE::calcCrossCorr(const float *pV1, const float *pV2) const
// return value = vSum[0] + vSum[1] + vSum[2] + vSum[3]
float *pvNorm = (float*)&vNorm;
double norm = sqrt(pvNorm[0] + pvNorm[1] + pvNorm[2] + pvNorm[3]);
if (norm < 1e-9) norm = 1.0; // to avoid div by zero
norm = (pvNorm[0] + pvNorm[1] + pvNorm[2] + pvNorm[3]);
float *pvSum = (float*)&vSum;
return (double)(pvSum[0] + pvSum[1] + pvSum[2] + pvSum[3]) / norm;
return (double)(pvSum[0] + pvSum[1] + pvSum[2] + pvSum[3]) / sqrt(norm < 1e-9 ? 1.0 : norm);
/* This is approximately corresponding routine in C-language yet without normalization:
double corr, norm;
@@ -182,6 +181,16 @@ double TDStretchSSE::calcCrossCorr(const float *pV1, const float *pV2) const
}
double TDStretchSSE::calcCrossCorrAccumulate(const float *pV1, const float *pV2, double &norm) const
{
// call usual calcCrossCorr function because SSE does not show big benefit of
// accumulating "norm" value, and also the "norm" rolling algorithm would get
// complicated due to SSE-specific alignment-vs-nonexact correlation rules.
return calcCrossCorr(pV1, pV2, norm);
}
//////////////////////////////////////////////////////////////////////////////
//
// implementation of SSE optimized functions of class 'FIRFilter'