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Merge commit 'd961a79eb07a8911540a0bd356d68ae0cf93c6a1'

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* commit 'd961a79eb07a8911540a0bd356d68ae0cf93c6a1':
  sbrdsp: move #if to disable all educational code

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-03-18 19:58:18 +01:00
commit 61ad2b42a1
1 changed files with 8 additions and 4 deletions
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12
libavcodec/sbrdsp.c
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@ -110,6 +110,11 @@ static void sbr_qmf_deint_bfly_c(float *v, const float *src0, const float *src1)
}
}
#if 0
/* This code is slower because it multiplies memory accesses.
* It is left for educational purposes and because it may offer
* a better reference for writing arch-specific DSP functions. */
static av_always_inline void autocorrelate(const float x[40][2],
float phi[3][2][2], int lag)
{
@ -138,14 +143,13 @@ static av_always_inline void autocorrelate(const float x[40][2],
static void sbr_autocorrelate_c(const float x[40][2], float phi[3][2][2])
{
#if 0
/* This code is slower because it multiplies memory accesses.
* It is left for educational purposes and because it may offer
* a better reference for writing arch-specific DSP functions. */
autocorrelate(x, phi, 0);
autocorrelate(x, phi, 1);
autocorrelate(x, phi, 2);
}
#else
static void sbr_autocorrelate_c(const float x[40][2], float phi[3][2][2])
{
float real_sum2 = x[0][0] * x[2][0] + x[0][1] * x[2][1];
float imag_sum2 = x[0][0] * x[2][1] - x[0][1] * x[2][0];
float real_sum1 = 0.0f, imag_sum1 = 0.0f, real_sum0 = 0.0f;