Tile.py 文件源码

def _tile_to_bitplanes(self, data):
        bitplanes = []
        row_fmt = Struct(8 * 'c')
        row_iter = row_fmt.iter_unpack(data)

        bitplanes = [self._pixel_row_to_4bpp(row) for row in row_iter]

        return b''.join(bitplanes)