Set up DCT.
@param nbits size of the input array: (1 << nbits) for DCT-II, DCT-III and DST-I (1 << nbits) + 1 for DCT-I @param type the type of transform
@note the first element of the input of DST-I is ignored
See Implementation
Set up DCT.
@param nbits size of the input array: (1 << nbits) for DCT-II, DCT-III and DST-I (1 << nbits) + 1 for DCT-I @param type the type of transform
@note the first element of the input of DST-I is ignored