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opus: don't rely on stride being 1<<shift

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Change-Id: I2d64fb20b2526d912eb665df0df4e87459676a92
This commit is contained in:
Nils Wallménius 2012-10-16 21:03:22 +02:00
parent 091619b4a5
commit aa55bc29f0
1 changed files with 5 additions and 4 deletions
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9
lib/rbcodec/codecs/libopus/celt/mdct.c
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@ -215,6 +215,7 @@ void clt_mdct_backward(const mdct_lookup *l, kiss_fft_scalar *in, kiss_fft_scala
{ {
int i; int i;
int N, N2, N4; int N, N2, N4;
int tstride = 1<<shift;
kiss_twiddle_scalar sine; kiss_twiddle_scalar sine;
VARDECL(kiss_fft_scalar, f); VARDECL(kiss_fft_scalar, f);
VARDECL(kiss_fft_scalar, f2); VARDECL(kiss_fft_scalar, f2);
@ -261,8 +262,8 @@ void clt_mdct_backward(const mdct_lookup *l, kiss_fft_scalar *in, kiss_fft_scala
*yp++ = yi + S_MUL(yr,sine); *yp++ = yi + S_MUL(yr,sine);
xp1+=2*stride; xp1+=2*stride;
xp2-=2*stride; xp2-=2*stride;
t0 += stride; t0 += tstride;
t1 -= stride; t1 -= tstride;
} }
} }
@ -285,8 +286,8 @@ void clt_mdct_backward(const mdct_lookup *l, kiss_fft_scalar *in, kiss_fft_scala
/* works because the cos is nearly one */ /* works because the cos is nearly one */
*fp++ = yr - S_MUL(yi,sine); *fp++ = yr - S_MUL(yi,sine);
*fp++ = yi + S_MUL(yr,sine); *fp++ = yi + S_MUL(yr,sine);
t0 += stride; t0 += tstride;
t1 -= stride; t1 -= tstride;
} }
} }
/* De-shuffle the components for the middle of the window only */ /* De-shuffle the components for the middle of the window only */