[FFmpeg-devel] [PATCH] avcodec/hevcdsp: Offset ff_hevc_.pel_filters to simplify addressing

[Christophe Gisquet]

Le dim. 11 févr. 2024 à 12:37, Nuo Mi <nuomi2021 at gmail.com> a écrit :
> > -DECLARE_ALIGNED(16, const int8_t, ff_hevc_qpel_filters)[3][16] = {
> > +DECLARE_ALIGNED(16, const int8_t, ff_hevc_qpel_filters)[4][16] = {
> >
> Do you know why this is [4][16]? [4][8] should suffice.

Probably so that all coefficient banks are aligned. Another use for it
is you can directly use the address in some instruction instead of
using/wasting a reg for holding the data.

-- 
Christophe Gisquet