From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTP id 49E3D43FD7 for ; Tue, 22 Aug 2023 18:03:26 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 276A468BF4F; Tue, 22 Aug 2023 21:03:24 +0300 (EEST) Received: from relay5-d.mail.gandi.net (relay5-d.mail.gandi.net [217.70.183.197]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 6B98D68C234 for ; Tue, 22 Aug 2023 21:03:17 +0300 (EEST) Received: by mail.gandi.net (Postfix) with ESMTPSA id 65B6B1C0005 for ; Tue, 22 Aug 2023 18:03:16 +0000 (UTC) Date: Tue, 22 Aug 2023 20:03:15 +0200 From: Michael Niedermayer To: FFmpeg development discussions and patches Message-ID: <20230822180315.GF7802@pb2> References: <20230820151022.2204421-1-jc@kynesim.co.uk> <20230820151022.2204421-4-jc@kynesim.co.uk> <20230820171614.GC7802@pb2> <20230820174511.GD7802@pb2> <5pl4eilterjun2l0up51r8jg1pvdluq7b2@4ax.com> <20230821191537.GE7802@pb2> MIME-Version: 1.0 In-Reply-To: X-GND-Sasl: michael@niedermayer.cc Subject: Re: [FFmpeg-devel] [PATCH v1 3/6] swscale: Add explicit rgb24->yv12 conversion X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Content-Type: multipart/mixed; boundary="===============1908058732977917881==" Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: --===============1908058732977917881== Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="U0OANiszdq44e5dO" Content-Disposition: inline --U0OANiszdq44e5dO Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable 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 do= nt > >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 >=20 > 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 [...] --=20 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. --U0OANiszdq44e5dO Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iF0EABEIAB0WIQSf8hKLFH72cwut8TNhHseHBAsPqwUCZOT4XwAKCRBhHseHBAsP q47XAJ9vyoj6uLn2oRBFPlh87hwqdZxkYACfZLI9XvKy6r6awwLwywSBzjdap6E= =oshz -----END PGP SIGNATURE----- --U0OANiszdq44e5dO-- --===============1908058732977917881== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe". --===============1908058732977917881==--