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#
# The Python Imaging Library.
# $Id: PixarImagePlugin.py 2134 2004-10-06 08:55:20Z fredrik $
#
# 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.
#
__version__ = "0.1"
import Image, ImageFile
#
# helpers
def i16(c):
return ord(c[0]) + (ord(c[1])<<8)
def i32(c):
return ord(c[0]) + (ord(c[1])<<8) + (ord(c[2])<<16) + (ord(c[3])<<24)
##
# 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 (FIXME: add "_accept" hook)
s = self.fp.read(4)
if s != "\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("PIXAR", PixarImageFile)
#
# FIXME: what's the standard extension?
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