recipe-576550.py 文件源码

def __call__(self,data):
        if len(data) < 2:
            if 1 == len(data):
                return data[:]
            return []
        if len(data) != self.n:
            self.__del__()
            self.n = len(data)
            size = c_ulong(self.n)
            self.workspace = real_workspace_alloc(size)
            self.wavetable = real_wavetable_alloc(size)
        a = array('d',data)       # need a copy of the data
        real_transform(ADDRESS(a),1,self.n,self.wavetable,self.workspace)
        rv = [complex(a[0]),]
        rv.extend(itertools.starmap(complex,grouper(2,a[1:],fillvalue=0)))
        return rv