[FFmpeg-devel] [RFC PATCH v2 4/4] libavcodec/j2kenc: Support for multiple layers

[Michael Niedermayer]

On Sun, Aug 23, 2020 at 04:02:23PM +0530, gautamramk at gmail.com wrote:
> From: Gautam Ramakrishnan <gautamramk at gmail.com>
> 
> This patch allows setting a compression ratio and to
> set multiple layers. The user has to input a compression
> ratio for each layer.
> The per layer compression ration can be set as follows:
> -layer_rates "r1,r2,...rn"
> for to create 'n' layers.
> ---
>  libavcodec/j2kenc.c                      | 492 +++++++++++++++++++----
>  libavcodec/jpeg2000.c                    |  13 +-
>  libavcodec/jpeg2000.h                    |  10 +
>  tests/ref/vsynth/vsynth1-jpeg2000        |   8 +-
>  tests/ref/vsynth/vsynth1-jpeg2000-97     |   6 +-
>  tests/ref/vsynth/vsynth2-jpeg2000        |   8 +-
>  tests/ref/vsynth/vsynth2-jpeg2000-97     |   8 +-
>  tests/ref/vsynth/vsynth3-jpeg2000        |   8 +-
>  tests/ref/vsynth/vsynth3-jpeg2000-97     |   8 +-
>  tests/ref/vsynth/vsynth_lena-jpeg2000    |   8 +-
>  tests/ref/vsynth/vsynth_lena-jpeg2000-97 |   8 +-
>  11 files changed, 475 insertions(+), 102 deletions(-)

This needs some documentation in doc/encoders.texi
* why / when does a user want to use this ...
* what is it, its syntax, ...

thx

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

It is what and why we do it that matters, not just one of them.
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