Function _save

src/PIL/ImageFile.py:644–669

Helper to save image based on tile list :param im: Image object. :param fp: File object. :param tile: Tile list. :param bufsize: Optional buffer size

(im: Image.Image, fp: IO[bytes], tile: list[_Tile], bufsize: int = 0)

def _save(im: Image.Image, fp: IO[bytes], tile: list[_Tile], bufsize: int = 0) -> None:
    """Helper to save image based on tile list

    :param im: Image object.
    :param fp: File object.
    :param tile: Tile list.
    :param bufsize: Optional buffer size
    """

    im.load()
    if not hasattr(im, "encoderconfig"):
        im.encoderconfig = ()
    tile.sort(key=_tilesort)
    # FIXME: make MAXBLOCK a configuration parameter
    # It would be great if we could have the encoder specify what it needs
    # But, it would need at least the image size in most cases. RawEncode is
    # a tricky case.
    bufsize = max(MAXBLOCK, bufsize, im.size[0] * 4)  # see RawEncode.c
    try:
        fh = fp.fileno()
        fp.flush()
        _encode_tile(im, fp, tile, bufsize, fh)
    except (AttributeError, io.UnsupportedOperation) as exc:
        _encode_tile(im, fp, tile, bufsize, None, exc)
    if hasattr(fp, "flush"):
        fp.flush()


def _encode_tile(