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optimisation: Removed a bunch of conditional branches from comb2pulse()

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This commit is contained in:
Jean-Marc Valin 2008-04-18 16:46:39 +10:00
parent abdfc38837
commit e6ce0c6a22
5 changed files with 14 additions and 10 deletions
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1
libcelt/pitch.c
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@ -168,6 +168,7 @@ void find_spectral_pitch(kiss_fftr_cfg fft, const struct PsyDecay *decay, const
celt_word16_t Xr, Xi, n;
/* weight = 1/sqrt(curve) */
n = celt_rsqrt(EPSILON+curve[i]);
/*n = SHR32(32767,(celt_ilog2(EPSILON+curve[i])>>1));*/
/* Pre-multiply X by n, so we can keep everything in 16 bits */
Xr = EXTRACT16(SHR32(MULT16_16(n, X[2*i ]),3));
Xi = EXTRACT16(SHR32(MULT16_16(n, X[2*i+1]),3));