When a track ends before its gapless prefetch completes, 'track
finished (engine empty)' sets thread_state.is_playing=false, and the
late PlayNext still plays (the engine's append re-opens the writer
gate) but nothing restores the player-level flag: the position monitor
freezes, no next gapless arm, no QConnect reports, the queue cursor
stays on the finished track, and playback dies silently at the next
end. The PlayNext handler now captures engine.empty() before appending
and restores is_playing when the append landed on an empty engine —
a user-paused engine still holds its source (not empty), so manual
pause is never resumed by this.
km
vicrodh
da7964f6c3