Using the forum native search function, you will surely got more threads speaking about this, though indeed most of them are very specific :
https://forum.cockos.com/search.php?searchid=15403459
If you only need track property check, Track Chunk will be overkill, as this cna be several MB long, where property are oftenjust few bytes.
Simply use : GetMediaTrackInfo_Value(track, param) function.
Track state will be "I_RECARM" property.