The fourcc of I420 was not recognized durring vout init so a fallback to YV12
was used - which flipped the U and V colorplanes.

(I'am not sure if this is the correct solution for this, a developer knowing
the video output more in detail should have a look on this.)

(It wouldn't hurt to make VLC align pixel lines more strongly, but I am
 not sure if this is feasible)

Without this, the PulseAudio output is completely useless. PulseAudio
provides ALSA emulation, so VLC would always use ALSA. Now, it will use
ALSA if PulseAudio is not available, but avoid the PulseAudio ALSA
emulation which makes more sense. Either way, if your PulseAudio setup
is broken, you are screwed - this change makes no difference.

The main interface video window calls are re-entrant nowadays.

Note that on my system i have to do make twice in order to build the
software. SMP-incompatible build?

Also, set CMAKE_INSTALL_PREFIX to contrib.

Signed-off-by: Christophe Mutricy <xtophe@videolan.org>

Contribs: build libprojectM trunk (fails for OSX for now).

This was totally broken over the last year

Also provide workarounds for some broadcasters which ignore this standard.

(cherry picked from commit 97f9b3dc9f3b9ba8ca9b74ca95f1113d76ac951a)
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

(and partial support for double precision, but who cares...)

Chrominance planes swap had been broken by the vout rework.

This uses the same numbering scheme as xvinfo and hopefully the old
Xlib XVideo plugin.