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| author | Loren Merritt <lorenm@u.washington.edu> | 2008-07-13 15:03:58 +0000 |
|---|---|---|
| committer | Loren Merritt <lorenm@u.washington.edu> | 2008-07-13 15:03:58 +0000 |
| commit | b9fa32082c71013e90eab9e9997967d2939cf4a6 (patch) | |
| tree | 83edd135988c73a75b017fbd12396e156de5e0a4 /libavcodec/fft.c | |
| parent | eb2cd99c73df74cba8ce0173f9ee2b70313adaa6 (diff) | |
exploit mdct symmetry
2% faster vorbis on conroe, k8. 7% on celeron.
Originally committed as revision 14207 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/fft.c')
| -rw-r--r-- | libavcodec/fft.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/fft.c b/libavcodec/fft.c index 7ef5d37c73..47e9e062f4 100644 --- a/libavcodec/fft.c +++ b/libavcodec/fft.c @@ -59,6 +59,7 @@ int ff_fft_init(FFTContext *s, int nbits, int inverse) } s->fft_calc = ff_fft_calc_c; s->imdct_calc = ff_imdct_calc; + s->imdct_half = ff_imdct_half; s->exptab1 = NULL; #ifdef HAVE_MMX @@ -67,6 +68,7 @@ int ff_fft_init(FFTContext *s, int nbits, int inverse) if (has_vectors & MM_3DNOWEXT) { /* 3DNowEx for K7/K8 */ s->imdct_calc = ff_imdct_calc_3dn2; + s->imdct_half = ff_imdct_half_3dn2; s->fft_calc = ff_fft_calc_3dn2; } else if (has_vectors & MM_3DNOW) { /* 3DNow! for K6-2/3 */ @@ -74,6 +76,7 @@ int ff_fft_init(FFTContext *s, int nbits, int inverse) } else if (has_vectors & MM_SSE) { /* SSE for P3/P4 */ s->imdct_calc = ff_imdct_calc_sse; + s->imdct_half = ff_imdct_half_sse; s->fft_calc = ff_fft_calc_sse; } else { shuffle = 0; |