This adds the ability to set a hotkey that shows the current media
title on the OSD, the same that is shown when media starts playing
video-title-show option is true.
Note: If this approach is acceptable, I can squash the commits to not have the unnecessarily late API change, but do it together with the refactor commit.
A different approach to exposing
vout_DisplayItemTitle would be to
add a new function to the player,
and call the resource's