[vlc-devel] [RFC PATCH 1/3] picture: add display orientation
thomas at gllm.fr
Tue Jan 2 17:17:12 CET 2018
On Fri, Dec 22, 2017, at 20:30, Rémi Denis-Courmont wrote:
> Le torstaina 21. joulukuuta 2017, 18.08.53 EET Thomas Guillem a écrit :
> > In order to allow filters to modify the orientation without touching picture
> > data.
> You can already do that by changing the output format of the filter.
Sorry for the late reply. If you change the filter fmt_out, the core will try to add a filter to compensate for format changes. So you'll have the first filter that will transform W x H to H x W and the adapt one that will try to fit H x W into W x H. It works for cpu formats, but do a lot of memcpy. I don't think we can adapt our usecase here.
> There are likely still some broken assumptions in the filter chain and/or vout
> code, either way.
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