From bbbb6d6fc3a1f8feeb5dc2f42a830203fce45afb Mon Sep 17 00:00:00 2001
From: Fabrice Bellard <fabrice@bellard.org>
Date: Tue, 7 Jan 2003 17:45:24 +0000
Subject: [PATCH] enabled SSE fft on x86
Originally committed as revision 1413 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
libavcodec/fft.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/libavcodec/fft.c b/libavcodec/fft.c
index 0f5181ac3c7..cdb8d4da9e2 100644
--- a/libavcodec/fft.c
+++ b/libavcodec/fft.c
@@ -51,11 +51,11 @@ int fft_init(FFTContext *s, int nbits, int inverse)
s->exptab1 = NULL;
/* compute constant table for HAVE_SSE version */
-#if defined(HAVE_MMX) && 0
- if (mm_flags & MM_SSE) {
+#if defined(HAVE_MMX) && defined(HAVE_BUILTIN_VECTOR)
+ if (mm_support() & MM_SSE) {
int np, nblocks, np2, l;
FFTComplex *q;
-
+
np = 1 << nbits;
nblocks = np >> 3;
np2 = np >> 1;
@@ -78,6 +78,7 @@ int fft_init(FFTContext *s, int nbits, int inverse)
nblocks = nblocks >> 1;
} while (nblocks != 0);
av_freep(&s->exptab);
+ s->fft_calc = fft_calc_sse;
}
#endif
--
GitLab