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sbrdsp: move #if to disable all educational code 

Avoids a warning of the unused function 'autocorrelate'.
This commit is contained in:
Janne Grunau 2014-03-18 12:33:13 +01:00
parent c829b35c08
commit d961a79eb0
1 changed files with 8 additions and 4 deletions
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12
libavcodec/sbrdsp.c
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@ -109,6 +109,11 @@ 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)
{
@ -137,14 +142,13 @@ 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;