Rémi Denis-Courmont fd39997f72 lavc/vp7dsp: add R-V V vp7_luma_dc_wht ...

This works out a bit more favourably than VP8's due to:
- additional multiplications that can be vectored,
- hardware-supported fixed-point rounding mode.

vp7_luma_dc_wht_c:       3.2
vp7_luma_dc_wht_rvv_i64: 2.0

2024-05-29 16:57:02 +03:00

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