On Fri, Oct 28, 2022 at 11:46:58PM +0200, Lynne wrote:
> This patch replaces the transform used in AAC with lavu/tx and removes
> the limitation on only being able to decode 960-sample files
> with the float decoder.
> This commit also removes a whole bunch of unnecessary and slow
> lifting steps the decoder did to compensate for the poor accuracy
> of the old integer transformation code.
> 
> Overall float decoder speedup on Zen 3 for 64kbps: 32%
> 
> Patch attached.
> 
> Note: lavu/tx's PFA 960pt transform currently has a bug that'll get fixed
> by my next patchset. The naive transforms are unaffected and may
> be used to test 960pt fixed-point decoding.

>  configure                           |    4 -
>  libavcodec/aac.h                    |   27 +++++----
>  libavcodec/aac_defines.h            |    4 -
>  libavcodec/aacdec.c                 |    4 -
>  libavcodec/aacdec_fixed.c           |    5 +
>  libavcodec/aacdec_template.c        |  106 +++++++++++++-----------------------
>  libavcodec/aacsbr.c                 |    1 
>  libavcodec/aacsbr_fixed.c           |    1 
>  libavcodec/mips/aacdec_mips.c       |    4 -
>  libavcodec/sinewin_fixed_tablegen.c |    3 +
>  libavcodec/sinewin_fixed_tablegen.h |    6 ++
>  11 files changed, 74 insertions(+), 91 deletions(-)
> 941b6d4662dd9808266b80fbafb5f003a734a415  0001-aacdec-convert-to-lavu-tx-and-support-fixed-point-96.patch
> From 95625b470fb61676e838310dc0108eb648f972a3 Mon Sep 17 00:00:00 2001
> From: Lynne <dev@lynne.ee>
> Date: Fri, 28 Oct 2022 21:36:10 +0200
> Subject: [PATCH] aacdec: convert to lavu/tx and support fixed-point 960-sample
>  decoding
> 
> This patch replaces the transform used in AAC with lavu/tx and removes
> the limitation on only being able to decode 960-sample files
> with the float decoder.
> This commit also removes a whole bunch of unnecessary and slow
> lifting steps the decoder did to compensate for the poor accuracy
> of the old integer transformation code.
> 
> Overall float decoder speedup on Zen 3 for 64kbps: 32%

This needs a update to fate checksums here:
make: *** [fate-filter-meta-4560-rotate0] Error 1
make: *** [fate-prores-gray] Error 1
make: *** [fate-autorotate] Error 1

thx

[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Many that live deserve death. And some that die deserve life. Can you give
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