since we load covers/images directly in a our own thread and the quick
look thumbnailing also works asynchronously on its own thread, we need
sync/coordinate both threads. otherwise it would be possible that a
cover from a different file could overwrite the cover of the current
file.
to prevent this every cover generation has a unique timestamp and only
covers for the last cover timestamp will ever be shown.
we are also not interested in icon type thumbnails, since those are just
generic file type icons.
quick look thumbnails can only be generated if quick look can read those
files. files unknown to macOS don't work out of the box and you need to
install a quick look extension for this, "QuickLook Video" for mkv.
instead of using the MP_KEY events (Int32) and using a logical OR to
generate a key event for the mpv core, use the cocoa event type for key
states and pass those to the the function. in the function we properly
map those events to the right MP_KEY events.
add new app_bridge objc file for bridging between mpv core and app
functionality. replace old EventsResponder singleton with AppHub.
another step to clean up all App functionality and have one central
place for it.
der richter