[FFmpeg-devel] avcodec/utvideodec : add SIMD (SSSE3 and AVX2) for gradient_pred (V2)

[Martin Vignali]

Hello,

New patchs in attach for adding gradient pred SIMD (SSSE3 and AVX2)
(use by utvideo dec now (more use will be add later))

Checkasm result (width = 1024)

add_gradient_pred_c: 2070.2
add_gradient_pred_ssse3: 602.4
add_gradient_pred_avx2: 385.7


Need to be apply after add_left_pred AVX2 patchs



Martin
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