It avoids a vlc_object_detach.

It will be needed if we want to remove one of the timeout in the main vout
thread. It also avoids 1 access of vout->p->p_spu outside of the vout thread.

 The high level object must at least live as long as the input_resource,
I used playlist, vlm or libvlc_media_player.
 It avoids invalid reparent of the vout, aout and sout on input changes.

 It breaks support for per input options used for creating vout, aout
and sout (:sout= is not impacted). I will fix the vout case.

 It breaks invalid usages of vlc_object_find(INPUT, PARENT) used
at least by :
 - the sout modules describe and display.
 - the sout statistics.
 - the vout splitter change
 - the snapshot vout display.
I will fix the vout related ones.

Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

Pointed-out-by: Sébastien Escudier

Reported by Lotesdelere

reported by Lotesdelere

We don't do anything with it yet.

It replaces the "fake" demuxer and decoder, and partially
the mjpeg one.
It does not rely on the extensions to detect the format.
The detected picture formats are: XCF, GIF, PNG, TIFF, BMP, PCX,
LBM, PNM, JFIF and SPIFF(Jpeg).
The reload feature of the fake:// demuxer is lost, as well as the deinterlace
feature of the fake decoder, patches are welcome.

It closes #3107 and #3388, and modifies #2295.

That fixes the y4m with unknown chroma that avformat can read

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>