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#
# 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.
#
__version__ = "0.1"
from PIL import Image, ImageFile, _binary
i8 = _binary.i8
##
# Image plugin for PhotoCD images. This plugin only reads the 768x512
# image from the file; higher resolutions are encoded in a proprietary
# encoding.
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_":
raise SyntaxError("not a PCD file")
orientation = i8(s[1538]) & 3
if orientation == 1:
self.tile_post_rotate = 90 # hack
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)]
def draft(self, mode, size):
if len(self.tile) != 1:
return
d, e, o, a = self.tile[0]
if size:
scale = max(self.size[0] / size[0], self.size[1] / size[1])
for s, o in [(4,0*2048), (2,0*2048), (1,96*2048)]:
if scale >= s:
break
# e = e[0], e[1], (e[2]-e[0]+s-1)/s+e[0], (e[3]-e[1]+s-1)/s+e[1]
# self.size = ((self.size[0]+s-1)/s, (self.size[1]+s-1)/s)
self.tile = [(d, e, o, a)]
return self
#
# registry
Image.register_open("PCD", PcdImageFile)
Image.register_extension("PCD", ".pcd")