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- #
- # The Python Imaging Library.
- # $Id$
- #
- # PIXAR raster support for PIL
- #
- # history:
- # 97-01-29 fl Created
- #
- # notes:
- # This is incomplete; it is based on a few samples created with
- # Photoshop 2.5 and 3.0, and a summary description provided by
- # Greg Coats <gcoats@labiris.er.usgs.gov>. Hopefully, "L" and
- # "RGBA" support will be added in future versions.
- #
- # Copyright (c) Secret Labs AB 1997.
- # Copyright (c) Fredrik Lundh 1997.
- #
- # See the README file for information on usage and redistribution.
- #
- from . import Image, ImageFile
- from ._binary import i16le as i16
- #
- # helpers
- def _accept(prefix):
- return prefix[:4] == b"\200\350\000\000"
- ##
- # Image plugin for PIXAR raster images.
- class PixarImageFile(ImageFile.ImageFile):
- format = "PIXAR"
- format_description = "PIXAR raster image"
- def _open(self):
- # assuming a 4-byte magic label
- s = self.fp.read(4)
- if not _accept(s):
- raise SyntaxError("not a PIXAR file")
- # read rest of header
- s = s + self.fp.read(508)
- self._size = i16(s[418:420]), i16(s[416:418])
- # get channel/depth descriptions
- mode = i16(s[424:426]), i16(s[426:428])
- if mode == (14, 2):
- self.mode = "RGB"
- # FIXME: to be continued...
- # create tile descriptor (assuming "dumped")
- self.tile = [("raw", (0, 0) + self.size, 1024, (self.mode, 0, 1))]
- #
- # --------------------------------------------------------------------
- Image.register_open(PixarImageFile.format, PixarImageFile, _accept)
- Image.register_extension(PixarImageFile.format, ".pxr")
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