rgbimage.py 文件源码

def ensurearr(self, invalidate=True):
        if self.darr is None:
            if self.dpil is not None:
                self.darr = np.fromstring(self.dpil.tostring("raw", "RGB", 0, -1), np.uint8).astype(np.float64)
                self.darr = np.rollaxis(np.reshape(self.darr, (self.shape[1], self.shape[0], 3) ), 1)
            elif self.dbuf is not None:
                self.darr = np.fromstring(self.dbuf, np.uint8).astype(np.float64)
                self.darr = np.delete(np.reshape(self.darr, (self.shape[1], self.shape[0], 4) ), 3, 2)
                self.darr = np.rollaxis(np.flipud(self.darr), 1)
            else:
                raise ValueError("No source data for conversion to array")
            self.rangearr = ( 0, 255.999 )
        if invalidate:
            self.dpil = None
            self.dbuf = None

# -----------------------------------------------------------------

## This private helper function returns a 2-tuple containing the least and most significant 16-bit portion
# of the specified unsigned 32-bit integer value.