[FFmpeg-devel] x11 output device for libavdevice

[Carl Eugen Hoyos]

Stefano Sabatini <stefasab <at> gmail.com> writes:

> > > Because right now the build system is schizofrenic, 
> > > and it is not clear when autodetection logic should 
> > > be used or not.
> > 
> > (Imo, it is crystal-clear, but that is not the quesion.)
> 
> It is not clear at all to me. What is the principle?

"System libraries" are auto-detected.
(vda is currently wrong, I forgot to 
work on this in the last days...)

Obviously you can discuss what is a system library 
and what is not a system library, we so far argued 
that not only libz and libbz2 (and libva) but alsa 
and sdl are also system libs.
I find this argumentation not unreasonable and I 
do not remember a user or a packager complaining.
(But when we broke libva, complaints were made 
immediately.)

(Please understand that this is *our* definition 
of "system library", it may of course diverge - 
significantly - from other people's definition.)

[...]

> > How is xv different from alsa?
> 
> The ALSA wrapper depends on the libasound library, 
> which in turn can be installed only when some 
> features are available on the system.

(Which features?)

> The XV wrapper depends on the libXv library, which 
> in turn can be installed only when some features 
> are available on the system.
> 
> So from this point of view I see no differences.

Then please make xv autodetected.

Carl Eugen