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Use stack_alloc for pitch.c

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Thorvald Natvig 2009-11-25 01:02:42 +01:00 • committed by Jean-Marc Valin
parent e05e7e23bb
commit 065dafdc3e
1 changed files with 13 additions and 4 deletions
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17
libcelt/pitch.c
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@ -105,14 +105,21 @@ void find_temporal_pitch(const CELTMode *m, const celt_sig * restrict x, celt_wo
const int lag = MAX_PERIOD;
const int N = FRAMESIZE(m);
int best_pitch[2]={0};
celt_word16 x_lp[len>>1];
celt_word16 x_lp4[len>>2];
celt_word16 y_lp4[lag>>2];
celt_word32 xcorr[max_pitch>>1];
VARDECL(celt_word16, x_lp);
VARDECL(celt_word16, x_lp4);
VARDECL(celt_word16, y_lp4);
VARDECL(celt_word32, xcorr);
celt_word32 maxcorr=1;
int offset;
int shift=0;
SAVE_STACK;
ALLOC(x_lp, len>>1, celt_word16);
ALLOC(x_lp4, len>>2, celt_word16);
ALLOC(y_lp4, len>>2, celt_word16);
ALLOC(xcorr, max_pitch>>1, celt_word32);
/* Down-sample by two and downmix to mono */
for (i=1;i<len>>1;i++)
x_lp[i] = SHR32(HALF32(HALF32(x[(2*i-1)*C]+x[(2*i+1)*C])+x[2*i*C]), SIG_SHIFT);
@ -195,5 +202,7 @@ void find_temporal_pitch(const CELTMode *m, const celt_sig * restrict x, celt_wo
CELT_COPY(y, y+(N>>1), (lag-N)>>1);
CELT_COPY(y+((lag-N)>>1), x_lp, N>>1);
RESTORE_STACK;
/*printf ("%d\n", *pitch);*/
}