Tile.py 文件源码

def pack(self, data):
        """Converts pixel values into 4bpp and packs it for Tile use.
        Returns bytes()
        """

        tile_fmt = Struct(32 * 'c')
        tile_iter = tile_fmt.iter_unpack(data)

        bitplane_values = [self._tile_to_bitplanes(b''.join(tile)) for tile in tile_iter]
        return b''.join(bitplane_values)