[FFmpeg-devel] [PATCH] libavfilter: constify filter list

wm4 nfxjfg at googlemail.com
Tue Jan 30 15:03:17 EET 2018

On Tue, 30 Jan 2018 13:50:37 +0100
Michael Niedermayer <michael at niedermayer.cc> wrote:

> On Tue, Jan 30, 2018 at 02:24:12PM +0700, Muhammad Faiz wrote:
> > Move REGISTER_FILTER to FILTER_TABLE in configure.
> > Auto generate filter extern and filter table.
> > Sort filter table, use bsearch on avfilter_get_by_name.
> > Define next pointer at filter extern, no need to initialize
> > next pointer at run time, so AVFilter can be set to const.  
> > Make avfilter_register always return error.  
> That breaks API
> Its also a step away from supporting plugins.
> Why plugins matter ? Because having plugin
> support is a big advantage, it allows a much wider
> community to work on, write and maintain filters.
> With plugins, people can write filters that are
> written in languages other than C. Or filters which
> some developer in FFmpeg doesnt want. Or they can be
> maintained externally by people who just do not like us.
> Or by people who perfer a FOSS license different from
> LGPL/GPL/BSD. Iam sure others can come up with more
> reasons ...
> Of course avfilter_register() isnt enough for plugins
> but it or something equivalent is needed for plugins.
> So i would prefer if avfilter_register() stays supported
> indefinitly or in case a different system is written for
> plugins then until that system is in place.

<insert contents of dozens of mails I've written before about this as
reply to exactly the same posts by you>

> That is just a preferrance, not an objection to the patch.

It certainly sounds like one.

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