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This commit is contained in:
Jean-Marc Valin 2010-08-26 08:17:49 -04:00
parent 5d937c0223
commit 2cc1fcbda0
1 changed files with 14 additions and 22 deletions
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36
libcelt/kiss_fft.c
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@ -658,22 +658,18 @@ void kiss_fft_free(const kiss_fft_state *cfg)
static void kiss_fft_stride(const kiss_fft_state *st,const kiss_fft_cpx *fin,kiss_fft_cpx *fout,int in_stride)
{
if (fin == fout)
int i;
celt_assert2 (fin != fout, "In-place FFT not supported");
/* Bit-reverse the input */
for (i=0;i<st->nfft;i++)
{
celt_fatal("In-place FFT not supported");
} else {
/* Bit-reverse the input */
int i;
for (i=0;i<st->nfft;i++)
{
fout[st->bitrev[i]] = fin[i];
fout[st->bitrev[i]] = fin[i];
#ifndef FIXED_POINT
fout[st->bitrev[i]].r *= st->scale;
fout[st->bitrev[i]].i *= st->scale;
fout[st->bitrev[i]].r *= st->scale;
fout[st->bitrev[i]].i *= st->scale;
#endif
}
kf_work( fout, fin, 1,in_stride, st->factors,st, 1, in_stride, 1);
}
kf_work( fout, fin, 1,in_stride, st->factors,st, 1, in_stride, 1);
}
void kiss_fft(const kiss_fft_state *cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fout)
@ -683,16 +679,12 @@ void kiss_fft(const kiss_fft_state *cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fo
static void kiss_ifft_stride(const kiss_fft_state *st,const kiss_fft_cpx *fin,kiss_fft_cpx *fout,int in_stride)
{
if (fin == fout)
{
celt_fatal("In-place FFT not supported");
} else {
/* Bit-reverse the input */
int i;
for (i=0;i<st->nfft;i++)
fout[st->bitrev[i]] = fin[i];
ki_work( fout, fin, 1,in_stride, st->factors,st, 1, in_stride, 1);
}
int i;
celt_assert2 (fin != fout, "In-place FFT not supported");
/* Bit-reverse the input */
for (i=0;i<st->nfft;i++)
fout[st->bitrev[i]] = fin[i];
ki_work( fout, fin, 1,in_stride, st->factors,st, 1, in_stride, 1);
}
void kiss_ifft(const kiss_fft_state *cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fout)