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2004 Aug 24
5
MMX/mmxext optimisations
quite some speed improvement indeed. attached the updated patch to apply to svn/trunk. j -------------- next part -------------- A non-text attachment was scrubbed... Name: theora-mmx.patch.gz Type: application/x-gzip Size: 8648 bytes Desc: not available Url : http://lists.xiph.org/pipermail/theora-dev/attachments/20040824/5a5f2731/theora-mmx.patch-0001.bin
2004 Sep 15
1
Theora mcomp tuning...
...(const unsigned char * NewDataPtr, + const unsigned char * RefDataPtr1, + const unsigned char * RefDataPtr2, + ogg_uint32_t PixelsPerLine ) { ogg_uint32_t i; ogg_int32_t XSum=0; ogg_int32_t XXSum=0; @@ -204,23 +204,29 @@ return (( (XXSum<<6) - XSum*XSum )); } -static ogg_uint32_t GetSumAbsDiffs (unsigned char * NewDataPtr, - unsigned char * RefDataPtr, - ogg_uint32_t PixelsPerLine, - ogg_uin...