- Trash Audio
- Keep original Audio

It is cleaner to not send event from caller threadand will fix a deadlock in the
playlist code.

This is ugly but we can do jack about this (short of forking ffmpeg).

avcodec is used from at least three different plugins: avcodec,
switcher (which seems dead though) and indirectly in avformat. We need
to have a common interlock for all of these.

This fixes a crash from the avformat (de)mux.

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

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

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

It makes prerolling less precise but it will avoid loosing valid
frame.

Using vlc_mutex_trylock(), we make sure that the video output thread
will not yield because of an incomplete snapshot request. It can still
yield in the very unlikely case that a thread is doing a snapshot
request while the video output thread finishes sorting SPUs _and_ there
already was a pending snapshot earlier.

The macros are indeed a little bit too intrusive, and break calls to
QString::sprintf
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>