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| author | Loren Merritt <lorenm@u.washington.edu> | 2006-08-08 04:01:04 +0000 |
|---|---|---|
| committer | Loren Merritt <lorenm@u.washington.edu> | 2006-08-08 04:01:04 +0000 |
| commit | bcfa3e58ee0ec7f8a739867ea66f9acb834e498a (patch) | |
| tree | a7aec9632c7157f03266a46861d4a898ee2340f5 /libavcodec/fft.c | |
| parent | 2c5ad5fd74a44145459e74acdf486c084f8de4b4 (diff) | |
3dnow2 implementation of imdct.
6% faster vorbis and wma.
Originally committed as revision 5954 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/fft.c')
| -rw-r--r-- | libavcodec/fft.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/libavcodec/fft.c b/libavcodec/fft.c index 1c63f6889f..3d5c221ebf 100644 --- a/libavcodec/fft.c +++ b/libavcodec/fft.c @@ -54,6 +54,7 @@ int ff_fft_init(FFTContext *s, int nbits, int inverse) s->exptab[i].im = s1; } s->fft_calc = ff_fft_calc_c; + s->imdct_calc = ff_imdct_calc; s->exptab1 = NULL; /* compute constant table for HAVE_SSE version */ @@ -62,11 +63,7 @@ int ff_fft_init(FFTContext *s, int nbits, int inverse) int has_vectors = 0; #if defined(HAVE_MMX) -#ifdef HAVE_MM3DNOW has_vectors = mm_support() & (MM_3DNOW | MM_3DNOWEXT | MM_SSE | MM_SSE2); -#else - has_vectors = mm_support() & (MM_SSE | MM_SSE2); -#endif #endif #if defined(HAVE_ALTIVEC) && !defined(ALTIVEC_USE_REFERENCE_C_CODE) has_vectors = mm_support() & MM_ALTIVEC; @@ -98,6 +95,8 @@ int ff_fft_init(FFTContext *s, int nbits, int inverse) } while (nblocks != 0); av_freep(&s->exptab); #if defined(HAVE_MMX) + if (has_vectors & MM_3DNOWEXT) + s->imdct_calc = ff_imdct_calc_3dn2; #ifdef HAVE_MM3DNOW if (has_vectors & MM_3DNOWEXT) /* 3DNowEx for Athlon(XP) */ |