On Tue, Aug 22, 2023 at 03:24:17PM +0100, John Cox wrote: > On Mon, 21 Aug 2023 21:15:37 +0200, you wrote: [...] > >> I can get to simple bilinear without adding so much complexity that I > >> lose the speed I need - would that be OK? > > > >Not sure simple bilinear is 100% clearly defined > >I think it could mean 3 things > > > >1 2 1 > > C > >1 2 1 > > > >or > > > > 1 > > C > > 1 > > > > or > > > >1 2 1 > > > >3 6 3 > > C > >3 6 3 > > > >1 2 1 > > > >I think the 6 and 12 tap cases would produce ok results teh 2 tap not > >Also maybe there are more finetuned filters for this specific case, i dont > >know / didnt look. > >Testing these probably would not be a bad idea before implementation > > > >I think users in 2023 expect the default to be better than what the > >existing code was doing by default > >so feel free to replace the existing "identical" code too > > I was thinking of 2-tap (in both X & Y) which is equivalent to > SWS_FAST_BILINEAR in ffmpeg. In the case I'm looking at I need the speed > more than I need the quality and I'm quite happy to gate them behind a > test for SWS_FAST_BILINEAR.
ok but maybe you want to still fix/add the higher quality C version too? it would be almost the same code, just a different mix of source samples iam asking as you are already working on this thx [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Dictatorship: All citizens are under surveillance, all their steps and actions recorded, for the politicians to enforce control. Democracy: All politicians are under surveillance, all their steps and actions recorded, for the citizens to enforce control.
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