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69 lines
1.7 KiB
Python
69 lines
1.7 KiB
Python
#
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# The Python Imaging Library.
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# $Id$
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#
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# PCD file handling
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#
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# History:
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# 96-05-10 fl Created
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# 96-05-27 fl Added draft mode (128x192, 256x384)
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#
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# Copyright (c) Secret Labs AB 1997.
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# Copyright (c) Fredrik Lundh 1996.
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#
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# See the README file for information on usage and redistribution.
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#
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from __future__ import annotations
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from . import Image, ImageFile
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##
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# Image plugin for PhotoCD images. This plugin only reads the 768x512
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# image from the file; higher resolutions are encoded in a proprietary
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# encoding.
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class PcdImageFile(ImageFile.ImageFile):
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format = "PCD"
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format_description = "Kodak PhotoCD"
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def _open(self) -> None:
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# rough
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assert self.fp is not None
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self.fp.seek(2048)
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s = self.fp.read(1539)
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if not s.startswith(b"PCD_"):
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msg = "not a PCD file"
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raise SyntaxError(msg)
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orientation = s[1538] & 3
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self.tile_post_rotate = None
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if orientation == 1:
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self.tile_post_rotate = 90
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elif orientation == 3:
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self.tile_post_rotate = -90
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self._mode = "RGB"
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self._size = (512, 768) if orientation in (1, 3) else (768, 512)
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self.tile = [ImageFile._Tile("pcd", (0, 0, 768, 512), 96 * 2048)]
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def load_prepare(self) -> None:
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if self._im is None and self.tile_post_rotate:
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self.im = Image.core.new(self.mode, (768, 512))
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ImageFile.ImageFile.load_prepare(self)
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def load_end(self) -> None:
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if self.tile_post_rotate:
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# Handle rotated PCDs
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self.im = self.rotate(self.tile_post_rotate, expand=True).im
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#
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# registry
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Image.register_open(PcdImageFile.format, PcdImageFile)
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Image.register_extension(PcdImageFile.format, ".pcd")
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