This patch introduces support for using V4L2 VBI devices for
reading NTSC EIA-608 closed captions.

This patch includes feedback from the vlc-devel mailing list from
the Oct 21, 2012, Oct 28, 2012, and Nov 18, 2012 submission attempts.
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

Signed-off-by: Konstantin Pavlov <thresh@videolan.org>

This avoids creating the playlist from the UI mainloop, which is not
typically a good idea.

pl_Get() does not create a reference to the playlist, so nothing is
leaked if the result is ignored. Calling pl_Get() ensures that the
playlist has been created.

Overwriting *fmt is safe nowadays.

Fix #7859
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Too many users are bitching about this

Close #6105

Due to mismatched "resource" and "hold" locks, this introduced a race
where more than one audio output gets created.

This reverts commit 4e57bd05.

This should make volume work.
Patch welcome to make hardware volume work instead where available.

Before setup(), opaque is not defined.

xdg-screensaver has higher priority, so xscreensaver was never used.

When the service is absent, the error message is NULL anyhow.

Move logic to Modules.am
Use CXXFLAGS

Close #6640

Close #6556

This should work-around distorsion due to excessively short latency
computation in PulseAudio, e.g. NVIDIA HDMI Audio.

In the longer term, VLC should probably set minreq to 40ms and tlength
to a larger value or even -1. But that would require more testing.

Close #7543

This does not actually seek to the right position yet
Ref #6895