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* avfilter/vf_ssim: improve precisionPaul B Mahol2020-02-04
| | | | Use doubles for accumulating floats.
* all: Make header guard names consistentTimothy Gu2016-01-31
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* vf_ssim: x86 simd for ssim_4x4xN and ssim_endN.Ronald S. Bultje2015-07-14
Both are 2-2.5x faster than their C counterpart. Reviewed-by: Paul B Mahol <onemda@gmail.com> Reviewed-by: James Almer <jamrial@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>