diff options
| author | Jean-Marc Valin <jmvalin@jmvalin.ca> | 2013-12-21 08:13:29 +0400 |
|---|---|---|
| committer | Jean-Marc Valin <jmvalin@jmvalin.ca> | 2013-12-21 08:13:29 +0400 |
| commit | 2e26b82ec24060f61bc553d1f36efad49d97167e (patch) | |
| tree | f117eec6d7bff76293d5c1c617dd2f260c1b1699 /celt/kiss_fft.c | |
| parent | 8e02afcfff4d1e4ddbf06a5b6878d49d6c3fccb5 (diff) | |
Moves the bitrev step to the IMDCT pre-rotation
Diffstat (limited to 'celt/kiss_fft.c')
| -rw-r--r-- | celt/kiss_fft.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/celt/kiss_fft.c b/celt/kiss_fft.c index ad706c73..39c4d7ec 100644 --- a/celt/kiss_fft.c +++ b/celt/kiss_fft.c @@ -665,7 +665,7 @@ void opus_fft(const kiss_fft_state *st,const kiss_fft_cpx *fin,kiss_fft_cpx *fou } } -void opus_ifft(const kiss_fft_state *st,const kiss_fft_cpx *fin,kiss_fft_cpx *fout) +void opus_ifft_impl(const kiss_fft_state *st,kiss_fft_cpx *fout) { int m2, m; int p; @@ -676,11 +676,6 @@ void opus_ifft(const kiss_fft_state *st,const kiss_fft_cpx *fin,kiss_fft_cpx *fo /* st->shift can be -1 */ shift = st->shift>0 ? st->shift : 0; - 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]; - fstride[0] = 1; L=0; do { @@ -717,3 +712,14 @@ void opus_ifft(const kiss_fft_state *st,const kiss_fft_cpx *fin,kiss_fft_cpx *fo } } +#ifdef TEST_UNIT_DFT_C +void opus_ifft(const kiss_fft_state *st,const kiss_fft_cpx *fin,kiss_fft_cpx *fout) +{ + 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]; + opus_ifft_impl(st, fout); +} +#endif |