PIL.PcdImagePlugin 源代码

#
# The Python Imaging Library.
# $Id$
#
# PCD file handling
#
# History:
#       96-05-10 fl     Created
#       96-05-27 fl     Added draft mode (128x192, 256x384)
#
# Copyright (c) Secret Labs AB 1997.
# Copyright (c) Fredrik Lundh 1996.
#
# See the README file for information on usage and redistribution.
#


from . import Image, ImageFile

##
# Image plugin for PhotoCD images.  This plugin only reads the 768x512
# image from the file; higher resolutions are encoded in a proprietary
# encoding.


[文档] class PcdImageFile(ImageFile.ImageFile): format = "PCD" format_description = "Kodak PhotoCD" def _open(self): # rough self.fp.seek(2048) s = self.fp.read(2048) if s[:4] != b"PCD_": msg = "not a PCD file" raise SyntaxError(msg) orientation = s[1538] & 3 self.tile_post_rotate = None if orientation == 1: self.tile_post_rotate = 90 elif orientation == 3: self.tile_post_rotate = -90 self.mode = "RGB" self._size = 768, 512 # FIXME: not correct for rotated images! self.tile = [("pcd", (0, 0) + self.size, 96 * 2048, None)]
[文档] def load_end(self): if self.tile_post_rotate: # Handle rotated PCDs self.im = self.im.rotate(self.tile_post_rotate) self._size = self.im.size
# # registry Image.register_open(PcdImageFile.format, PcdImageFile) Image.register_extension(PcdImageFile.format, ".pcd")