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added define for builtins use - inverse fix by Romain Dolbeau 

Originally committed as revision 1410 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Fabrice Bellard 2003-01-07 17:41:43 +00:00
parent 52b41d7f70
commit e1958604fd
1 changed files with 12 additions and 0 deletions
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12
libavcodec/i386/fft_sse.c
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@ -19,11 +19,16 @@
#include "../dsputil.h"
#include <math.h>
#ifdef HAVE_BUILTIN_VECTOR
#include <xmmintrin.h>
static const float p1p1p1m1[4] __attribute__((aligned(16))) =
{ 1.0, 1.0, 1.0, -1.0 };
static const float p1p1m1p1[4] __attribute__((aligned(16))) =
{ 1.0, 1.0, -1.0, 1.0 };
static const float p1p1m1m1[4] __attribute__((aligned(16))) =
{ 1.0, 1.0, -1.0, -1.0 };
@ -54,6 +59,11 @@ void fft_calc_sse(FFTContext *s, FFTComplex *z)
r = (__m128 *)&z[0];
c1 = *(__m128 *)p1p1m1m1;
c2 = *(__m128 *)p1p1p1m1;
if (s->inverse)
c2 = *(__m128 *)p1p1m1p1;
else
c2 = *(__m128 *)p1p1p1m1;
j = (np >> 2);
do {
a = r[0];
@ -126,3 +136,5 @@ void fft_calc_sse(FFTContext *s, FFTComplex *z)
nloops = nloops << 1;
} while (nblocks != 0);
}
#endif