Frank Barchard 715a84778e ARGBMultiplyRow with rounding for AVX2 and RVV ... - AVX2 uses vpmulhrsw to compute ((128 * a * b) + 16384) >> 15. - RVV uses e8, m2 (widening to e16, m4) with vwmulu.vv, vwaddu.wx 128, and vnsrl.wi by 8. CPU C Intrinsics Inline ASM Speedup (Inline) ------------------------------------------------------------------------ SiFive X390 gen 2 (est.) 2150 ms 29 ms 27 ms 79.63x (1.07x) SpacemiT K3 (est.) 980 ms 41 ms 38 ms 25.79x (1.08x) T-Head C908 (est.) 2060 ms 100 ms 94 ms 21.91x (1.06x) Google Coral (est.) 2680 ms 94 ms 88 ms 30.45x (1.07x) Test: libyuv_unittest --gtest_filter=*ARGBMultiply* Bug: None Change-Id: Iff65794623a6f29e5cb6bda7bd3084c8a5f676d1 Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/8422278 Reviewed-by: richard winterton <rrwinterton@gmail.com> Commit-Queue: Frank Barchard <fbarchard@google.com>		2026-09-21 10:20:14 -07:00
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libyuv	ARGBMultiplyRow with rounding for AVX2 and RVV	2026-09-21 10:20:14 -07:00
libyuv.h	libyuv.h: Add scale_rgb.h and remove scale_row.h	2026-08-26 19:06:22 -07:00