[vlc-devel] [PATCH 3/4] display: no need to pass the video_format_t for CROP/ASPECT_RATIO changes

Steve Lhomme robux4 at gmail.com
Wed Aug 2 17:53:11 CEST 2017

On Wed, Aug 2, 2017 at 5:40 PM, Rémi Denis-Courmont <remi at remlab.net> wrote:
> Le keskiviikkona 2. elokuuta 2017, 17.32.25 EEST Steve Lhomme a écrit :
>> IMO it's important only if some modules wanted to know the previous
>> value before making the change. If not (which is the case in all
>> modules) then they don't care how they receive the data and if they
>> can read the previous value.
> You are assuming that either the change will be accepted, or the video output
> display does not care at all about crop and A/R. If so, then it makes sense to
> ignore failure. (I doubt that it really works anyway.)

This patch doesn't change this.

>> If they refuse they know nothing changed
>> (or not) and they don't have to care how the core recovers from that,
> I don´t see what would warrant that assumption in general. They´d have to copy
> the old source format.
>> just like before.
> I cannot agree. If we offer the possibility to reject the change, then we must
> provide the current value as a matter of principles. That´s most probably why
> Laurent designed the semantics as they currently are.

I can't read minds but even it might be nice, in reality noone cares
and will most likely never will.

> Otherwise we just assume the changes are always accepted.

That's not what the current code does.

> --
> 雷米‧德尼-库尔蒙
> https://www.remlab.net/
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