void playlist_change (ChangeType);
void playlist_content_change (ChangeType, int, bool);
Frame dcp_to_content_video (std::shared_ptr<const Piece> piece, dcpomatic::DCPTime t) const;
void playlist_change (ChangeType);
void playlist_content_change (ChangeType, int, bool);
Frame dcp_to_content_video (std::shared_ptr<const Piece> piece, dcpomatic::DCPTime t) const;