[FFmpeg-devel] [PATCH] avcodec/dcaenc: Use aac psychoacoustic model for dcaenc

Michael Niedermayer michael at niedermayer.cc
Sun Mar 25 17:57:21 EEST 2018


On Sun, Mar 25, 2018 at 01:55:42PM +0300, Даниил Чередник wrote:
[...]

>  libavcodec/dcaenc.c   |  369 ++++++++++++++++++++------------------------------
>  libavcodec/psymodel.c |    1 
>  tests/fate/acodec.mak |    4 
>  3 files changed, 156 insertions(+), 218 deletions(-)
> fd146632a7f29530a59d35abd63149c81b4dfcc6  0002-avcodec-dcaenc-Use-aac-psychoacoustic-model-for-DCA-.patch
> From 99d937a0828bbd60aef52d7979c75f8c21989145 Mon Sep 17 00:00:00 2001
> From: Daniil Cherednik <dan.cherednik at gmail.com>
> Date: Sun, 4 Mar 2018 13:14:17 +0000
> Subject: [PATCH 2/2] avcodec/dcaenc: Use aac psychoacoustic model for DCA
>  encoder
> 
> There are several reasons to replace dca psychoacoustic to common model:
>  - dca psychoacoustic has some quality problems especially at high frequency bands
>  - unclear implementation
>  - aac implementation allows to use tonality measurement for future improvements
>  - a bit faster

This breaks 
make -j12 fate-acodec-dca
(segfaults)

tell me if you can reproduce? If not ill rebuild with debug symbols and get a
backtrace

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

If you drop bombs on a foreign country and kill a hundred thousand
innocent people, expect your government to call the consequence
"unprovoked inhuman terrorist attacks" and use it to justify dropping
more bombs and killing more people. The technology changed, the idea is old.
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