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Diffstat (limited to 'PIL/SgiImagePlugin.py')
-rw-r--r-- | PIL/SgiImagePlugin.py | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/PIL/SgiImagePlugin.py b/PIL/SgiImagePlugin.py deleted file mode 100644 index 0ab741e..0000000 --- a/PIL/SgiImagePlugin.py +++ /dev/null @@ -1,91 +0,0 @@ -# -# The Python Imaging Library. -# $Id: SgiImagePlugin.py 2134 2004-10-06 08:55:20Z fredrik $ -# -# SGI image file handling -# -# See "The SGI Image File Format (Draft version 0.97)", Paul Haeberli. -# <ftp://ftp.sgi.com/graphics/SGIIMAGESPEC> -# -# History: -# 1995-09-10 fl Created -# -# Copyright (c) Secret Labs AB 1997. -# Copyright (c) Fredrik Lundh 1995. -# -# See the README file for information on usage and redistribution. -# - - -__version__ = "0.1" - - -import string -import Image, ImageFile - - -def i16(c): - return ord(c[1]) + (ord(c[0])<<8) - -def i32(c): - return ord(c[3]) + (ord(c[2])<<8) + (ord(c[1])<<16) + (ord(c[0])<<24) - - -def _accept(prefix): - return i16(prefix) == 474 - -## -# Image plugin for SGI images. - -class SgiImageFile(ImageFile.ImageFile): - - format = "SGI" - format_description = "SGI Image File Format" - - def _open(self): - - # HEAD - s = self.fp.read(512) - if i16(s) != 474: - raise SyntaxError, "not an SGI image file" - - # relevant header entries - compression = ord(s[2]) - - # bytes, dimension, zsize - layout = ord(s[3]), i16(s[4:]), i16(s[10:]) - - # determine mode from bytes/zsize - if layout == (1, 2, 1): - self.mode = "L" - elif layout == (1, 3, 3): - self.mode = "RGB" - else: - raise SyntaxError, "unsupported SGI image mode" - - # size - self.size = i16(s[6:]), i16(s[8:]) - - # decoder info - if compression == 0: - if self.mode == "RGB": - # RGB images are band interleaved - size = self.size[0]*self.size[1] - self.tile = [("raw", (0,0)+self.size, 512, ("R",0,1)), - ("raw", (0,0)+self.size, 512+size, ("G",0,1)), - ("raw", (0,0)+self.size, 512+2*size, ("B",0,1))] - else: - self.tile = [("raw", (0,0)+self.size, 512, (self.mode, 0, 1))] - if compression == 1: - self.tile = [("sgi_rle", (0,0)+self.size, 512, (self.mode, 0, 1))] - -# -# registry - -Image.register_open("SGI", SgiImageFile, _accept) - -Image.register_extension("SGI", ".bw") -Image.register_extension("SGI", ".rgb") -Image.register_extension("SGI", ".rgba") - -Image.register_extension("SGI", ".sgi") # really? |