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authorChristophe Gisquet <christophe.gisquet@gmail.com>2012-01-12 00:11:15 +0100
committerDiego Biurrun <diego@biurrun.de>2012-01-30 23:58:25 +0100
commite5c9de2ab78cf18636eac2fa8e059e58a71e512b (patch)
tree0e50bde7419002f8b9d16343a5a6947fdf2b8f45 /libavfilter/vf_settb.c
parent91bafb52ae31d85314e77ba84dc1e10348cd114e (diff)
downloadffmpeg-e5c9de2ab78cf18636eac2fa8e059e58a71e512b.tar.gz
rv40: x86 SIMD for biweight
Provide MMX, SSE2 and SSSE3 versions, with a fast-path when the weights are multiples of 512 (which is often the case when the values round up nicely). *_TIMER report for the 16x16 and 8x8 cases: C: 9015 decicycles in 16, 524257 runs, 31 skips 2656 decicycles in 8, 524271 runs, 17 skips MMX: 4156 decicycles in 16, 262090 runs, 54 skips 1206 decicycles in 8, 262131 runs, 13 skips MMX on fast-path: 2760 decicycles in 16, 524222 runs, 66 skips 995 decicycles in 8, 524252 runs, 36 skips SSE2: 2163 decicycles in 16, 262131 runs, 13 skips 832 decicycles in 8, 262137 runs, 7 skips SSE2 with fast path: 1783 decicycles in 16, 524276 runs, 12 skips 711 decicycles in 8, 524283 runs, 5 skips SSSE3: 2117 decicycles in 16, 262136 runs, 8 skips 814 decicycles in 8, 262143 runs, 1 skips SSSE3 with fast path: 1315 decicycles in 16, 524285 runs, 3 skips 578 decicycles in 8, 524286 runs, 2 skips This means around a 4% speedup for some sequences. Signed-off-by: Diego Biurrun <diego@biurrun.de>
Diffstat (limited to 'libavfilter/vf_settb.c')
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