#
|
# 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 __future__ import annotations
|
|
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.
|
|
|
class PcdImageFile(ImageFile.ImageFile):
|
format = "PCD"
|
format_description = "Kodak PhotoCD"
|
|
def _open(self) -> None:
|
# rough
|
assert self.fp is not None
|
|
self.fp.seek(2048)
|
s = self.fp.read(1539)
|
|
if not s.startswith(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 = 270
|
|
self._mode = "RGB"
|
self._size = (512, 768) if orientation in (1, 3) else (768, 512)
|
self.tile = [ImageFile._Tile("pcd", (0, 0, 768, 512), 96 * 2048)]
|
|
def load_prepare(self) -> None:
|
if self._im is None and self.tile_post_rotate:
|
self.im = Image.core.new(self.mode, (768, 512))
|
ImageFile.ImageFile.load_prepare(self)
|
|
def load_end(self) -> None:
|
if self.tile_post_rotate:
|
# Handle rotated PCDs
|
self.im = self.rotate(self.tile_post_rotate, expand=True).im
|
|
|
#
|
# registry
|
|
Image.register_open(PcdImageFile.format, PcdImageFile)
|
|
Image.register_extension(PcdImageFile.format, ".pcd")
|
