JVET-N0805: APS for LMCS (using different APS types)

See merge request !577

- The indexing of cost array was corrected by following shuffling pattern of full-RD candidate list employed by MIP.
- ~0.1% coding gain inc. along with ~4% encoding time dec. in AI

This reverts merge request !532

- The indexing of cost array was corrected by following shuffling pattern of full-RD candidate list employed by MIP.
- ~0.1% coding gain inc. along with ~4% encoding time dec. in AI

Moonmo Koo authored 5 years ago and Frank Bossen committed 5 years ago

- Previous name: Reduced Secondary Transform (RST)
- The parameter, LFNST, should be added in cfg file for enabing LFNST, i.e. LFNST = 1

Changed condition for "fast" RA in reduceHadCandList() and renamed variables using camelCase notation

Cosmetic change: Fixed a typo in the name of a variable: "ispIsCurrentWinnder" was replaced with "ispIsCurrentWinner".