new ()
chan:Vector<MappingChannel>
couplingSteps:Int
submapFloor:Vector<Int>
submapResidue:Vector<Int>
submaps:Int
doFloor (floors:Vector<Floor>, i:Int, n:Int, target:Vector<Float>, finalY:Array<Int>, step2Flag:Vector<Bool>):Void
staticread (decodeState:VorbisDecodeState, channels:Int):Mapping