[FFmpeg-devel] avfilter/x86/vf_threshold : add SSE4 and AVX2 for threshold 16

[Martin Vignali]

Hello,

Patch in attach add SIMD for threshold16

Checkasm result :
threshold16_c: 304.5
threshold16_sse4: 60.5
threshold16_avx2: 45.0


001 : modify threshold macro, and add threshold 16

002 : add checkasm test for threshold16


Martin
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