forked from s444420/AL-2020
71 lines
1.6 KiB
Python
71 lines
1.6 KiB
Python
#
|
|
# 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 s != b"\200\350\000\000":
|
|
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")
|