getFlushSize
virtual int getFlushSize(void); // size of out[] for the last call
virtual int getFlushSize(void);
nsamp = resampler.getFlushSize();
int num = getFlushSize();
int num_in = Fir::getFlushSize();
int num = (Fir::getFlushSize() + up - 1) / up;
int num_in = (Fir::getFlushSize() + up - 1) / up;
int num = (Fir::getFlushSize() + up - 1) / up;