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enabled SSE fft on x86 

Originally committed as revision 1413 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Fabrice Bellard 2003-01-07 17:45:24 +00:00
parent d9823692f5
commit bbbb6d6fc3
1 changed files with 4 additions and 3 deletions
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7
libavcodec/fft.c
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@ -51,11 +51,11 @@ int fft_init(FFTContext *s, int nbits, int inverse)
s->exptab1 = NULL; s->exptab1 = NULL;
/* compute constant table for HAVE_SSE version */ /* compute constant table for HAVE_SSE version */
#if defined(HAVE_MMX) && 0 #if defined(HAVE_MMX) && defined(HAVE_BUILTIN_VECTOR)
if (mm_flags & MM_SSE) { if (mm_support() & MM_SSE) {
int np, nblocks, np2, l; int np, nblocks, np2, l;
FFTComplex *q; FFTComplex *q;
np = 1 << nbits; np = 1 << nbits;
nblocks = np >> 3; nblocks = np >> 3;
np2 = np >> 1; np2 = np >> 1;
@ -78,6 +78,7 @@ int fft_init(FFTContext *s, int nbits, int inverse)
nblocks = nblocks >> 1; nblocks = nblocks >> 1;
} while (nblocks != 0); } while (nblocks != 0);
av_freep(&s->exptab); av_freep(&s->exptab);
s->fft_calc = fft_calc_sse;
} }
#endif #endif