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| author | Loren Merritt <lorenm@u.washington.edu> | 2008-08-12 00:34:08 +0000 |
|---|---|---|
| committer | Loren Merritt <lorenm@u.washington.edu> | 2008-08-12 00:34:08 +0000 |
| commit | e8dd7b0c9a3d61a2a5be7e763e5bdde486cdfc29 (patch) | |
| tree | 3a5428f7e9b072d9195b515ef4742fc84ffd52d3 | |
| parent | 46803f4f67e821f6e62793d876be164fc04622b2 (diff) | |
| download | ffmpeg-e8dd7b0c9a3d61a2a5be7e763e5bdde486cdfc29.tar.gz | |
remove a float->double->float conversion.
1.8x faster imdct_c with fpmath=sse, no change with x87
Originally committed as revision 14701 to svn://svn.ffmpeg.org/ffmpeg/trunk
| -rw-r--r-- | libavcodec/mdct.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/libavcodec/mdct.c b/libavcodec/mdct.c index 86d447b910..069ad5b5d1 100644 --- a/libavcodec/mdct.c +++ b/libavcodec/mdct.c @@ -92,10 +92,10 @@ int ff_mdct_init(MDCTContext *s, int nbits, int inverse) /* complex multiplication: p = a * b */ #define CMUL(pre, pim, are, aim, bre, bim) \ {\ - double _are = (are);\ - double _aim = (aim);\ - double _bre = (bre);\ - double _bim = (bim);\ + FFTSample _are = (are);\ + FFTSample _aim = (aim);\ + FFTSample _bre = (bre);\ + FFTSample _bim = (bim);\ (pre) = _are * _bre - _aim * _bim;\ (pim) = _are * _bim + _aim * _bre;\ } |