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| author | Michael Niedermayer <michaelni@gmx.at> | 2003-10-23 13:22:20 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2003-10-23 13:22:20 +0000 |
| commit | cf3bf5bbaa049667612a4b992239cc99dc31aee8 (patch) | |
| tree | 1803ac6d760cce57fc0858e53b7a022f0e21bea6 /libavcodec/i386/dsputil_mmx.c | |
| parent | 1745173bc56482e449253ef8d1032c6d5d48cab2 (diff) | |
| download | ffmpeg-cf3bf5bbaa049667612a4b992239cc99dc31aee8.tar.gz | |
minor mmx2 optimization if the dct
Originally committed as revision 2423 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/i386/dsputil_mmx.c')
| -rw-r--r-- | libavcodec/i386/dsputil_mmx.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/libavcodec/i386/dsputil_mmx.c b/libavcodec/i386/dsputil_mmx.c index c523be74a8..ec2b9cb18b 100644 --- a/libavcodec/i386/dsputil_mmx.c +++ b/libavcodec/i386/dsputil_mmx.c @@ -1603,8 +1603,13 @@ void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx) const int idct_algo= avctx->idct_algo; #ifdef CONFIG_ENCODERS - if(dct_algo==FF_DCT_AUTO || dct_algo==FF_DCT_MMX) - c->fdct = ff_fdct_mmx; + if(dct_algo==FF_DCT_AUTO || dct_algo==FF_DCT_MMX){ + if(mm_flags & MM_MMXEXT){ + c->fdct = ff_fdct_mmx2; + }else{ + c->fdct = ff_fdct_mmx; + } + } #endif //CONFIG_ENCODERS if(idct_algo==FF_IDCT_AUTO || idct_algo==FF_IDCT_SIMPLEMMX){ |