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

It could still be better. If the disconnection is unrecoverable,
I suspect a flood of identical errors will be emitted continuously
as the core keeps pushing audio buffers.

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

The MTA is fully taken care of by mmdevice.c.

vout_display_opengl_Delete will call OpenglLock, so it is a bad idea to previously release sys->glView

Close #7292