Part of the fft8() function corresponds to the BUTTERFLIES macro,
so use it.
Signed-off-by: Mans Rullgard <m...@mansr.com>
---
libavcodec/fft.c | 13 ++++---------
1 files changed, 4 insertions(+), 9 deletions(-)
diff --git a/libavcodec/fft.c b/libavcodec/fft.c
index 2da5b43..ff5d34b 100644
--- a/libavcodec/fft.c
+++ b/libavcodec/fft.c
@@ -246,21 +246,16 @@ static void fft4(FFTComplex *z)
static void fft8(FFTComplex *z)
{
- FFTDouble t1, t2, t3, t4, t5, t6, t7, t8;
+ FFTDouble t1, t2, t3, t4, t5, t6;
fft4(z);
BF(t1, z[5].re, z[4].re, -z[5].re);
BF(t2, z[5].im, z[4].im, -z[5].im);
- BF(t3, z[7].re, z[6].re, -z[7].re);
- BF(t4, z[7].im, z[6].im, -z[7].im);
- BF(t8, t1, t3, t1);
- BF(t7, t2, t2, t4);
- BF(z[4].re, z[0].re, z[0].re, t1);
- BF(z[4].im, z[0].im, z[0].im, t2);
- BF(z[6].re, z[2].re, z[2].re, t7);
- BF(z[6].im, z[2].im, z[2].im, t8);
+ BF(t5, z[7].re, z[6].re, -z[7].re);
+ BF(t6, z[7].im, z[6].im, -z[7].im);
+ BUTTERFLIES(z[0],z[2],z[4],z[6]);
TRANSFORM(z[1],z[3],z[5],z[7],sqrthalf,sqrthalf);
}
--
1.7.4.1
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