From: Kieran Kunhya via ffmpeg-devel <ffmpeg-devel@ffmpeg.org>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Cc: Kieran Kunhya <kieran618@googlemail.com>, Niklas Haas <git@haasn.dev>
Subject: Re: [FFmpeg-devel] [PATCH v2 14/17] swscale/x86: add SIMD backend
Date: Wed, 21 May 2025 15:11:33 +0100
Message-ID: <CABGuwEncy3LvX8TXo9X2F2n=5WyW+x-mKON3Q_wDZLwiNcA6VA@mail.gmail.com> (raw)
In-Reply-To: <20250521124824.49657-15-ffmpeg@haasn.xyz>
On Wed, May 21, 2025 at 2:00 PM Niklas Haas <ffmpeg@haasn.xyz> wrote:
>
> From: Niklas Haas <git@haasn.dev>
>
> This covers most 8-bit and 16-bit ops, and some 32-bit ops. It also covers all
> floating point operations. While this is not yet 100% coverage, it's good
> enough for the vast majority of formats out there.
>
> Of special note is the packed shuffle fast path, which uses pshufb at vector
> sizes up to AVX512.
Can I ask if this has some kind of design documentation? Because it's
not exactly simple to understand what's going on here.
I would not like to repeat the mistakes of swscale.
Kieran
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next prev parent reply other threads:[~2025-05-21 14:11 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-21 12:43 [FFmpeg-devel] [PATCH v2 00/17] swscale: new ops framework Niklas Haas
2025-05-21 12:43 ` [FFmpeg-devel] [PATCH v2 01/17] swscale/format: rename legacy format conversion table Niklas Haas
2025-05-21 12:43 ` [FFmpeg-devel] [PATCH v2 02/17] swscale/format: add ff_fmt_clear() Niklas Haas
2025-05-21 12:43 ` [FFmpeg-devel] [PATCH v2 03/17] tests/checkasm: increase number of runs in between measurements Niklas Haas
2025-05-21 12:43 ` [FFmpeg-devel] [PATCH v2 04/17] tests/checkasm: generalize DEF_CHECKASM_CHECK_FUNC to floats Niklas Haas
2025-05-21 12:43 ` [FFmpeg-devel] [PATCH v2 05/17] swscale: add SWS_UNSTABLE flag Niklas Haas
2025-05-21 12:43 ` [FFmpeg-devel] [PATCH v2 06/17] swscale/ops: introduce new low level framework Niklas Haas
2025-05-21 12:43 ` [FFmpeg-devel] [PATCH v2 07/17] swscale/optimizer: add high-level ops optimizer Niklas Haas
2025-05-21 12:43 ` [FFmpeg-devel] [PATCH v2 08/17] swscale/ops_internal: add internal ops backend API Niklas Haas
2025-05-23 16:27 ` Michael Niedermayer
2025-05-23 16:52 ` Niklas Haas
2025-05-21 12:43 ` [FFmpeg-devel] [PATCH v2 09/17] swscale/ops: add dispatch layer Niklas Haas
2025-05-21 12:43 ` [FFmpeg-devel] [PATCH v2 10/17] swscale/optimizer: add packed shuffle solver Niklas Haas
2025-05-21 12:43 ` [FFmpeg-devel] [PATCH v2 11/17] swscale/ops_chain: add internal abstraction for kernel linking Niklas Haas
2025-05-21 12:43 ` [FFmpeg-devel] [PATCH v2 12/17] swscale/ops_backend: add reference backend basend on C templates Niklas Haas
2025-05-21 12:43 ` [FFmpeg-devel] [PATCH v2 13/17] swscale/ops_memcpy: add 'memcpy' backend for plane->plane copies Niklas Haas
2025-05-21 12:44 ` [FFmpeg-devel] [PATCH v2 14/17] swscale/x86: add SIMD backend Niklas Haas
2025-05-21 14:11 ` Kieran Kunhya via ffmpeg-devel [this message]
2025-05-21 12:44 ` [FFmpeg-devel] [PATCH v2 15/17] tests/checkasm: add checkasm tests for swscale ops Niklas Haas
2025-05-21 12:44 ` [FFmpeg-devel] [PATCH v2 16/17] swscale/format: add new format decode/encode logic Niklas Haas
2025-05-21 12:44 ` [FFmpeg-devel] [PATCH v2 17/17] swscale/graph: allow experimental use of new format handler Niklas Haas
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