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sse implementation of imdct.

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patch mostly by Zuxy Meng (zuxy dot meng at gmail dot com)

Originally committed as revision 6311 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Loren Merritt 2006-09-21 16:37:39 +00:00
parent f5a478f65d
commit ebbafcb454
3 changed files with 133 additions and 5 deletions
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11
libavcodec/fft.c
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@ -65,17 +65,18 @@ int ff_fft_init(FFTContext *s, int nbits, int inverse)
if (has_vectors) {
#if defined(HAVE_MMX)
if (has_vectors & MM_3DNOWEXT)
s->imdct_calc = ff_imdct_calc_3dn2;
if (has_vectors & MM_3DNOWEXT)
if (has_vectors & MM_3DNOWEXT) {
/* 3DNowEx for K7/K8 */
s->imdct_calc = ff_imdct_calc_3dn2;
s->fft_calc = ff_fft_calc_3dn2;
else if (has_vectors & MM_3DNOW)
} else if (has_vectors & MM_3DNOW) {
/* 3DNow! for K6-2/3 */
s->fft_calc = ff_fft_calc_3dn;
else if (has_vectors & MM_SSE)
} else if (has_vectors & MM_SSE) {
/* SSE for P3/P4 */
s->imdct_calc = ff_imdct_calc_sse;
s->fft_calc = ff_fft_calc_sse;
}
#else /* HAVE_MMX */
if (has_vectors & MM_ALTIVEC)
s->fft_calc = ff_fft_calc_altivec;