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Diffstat (limited to 'lib/Python/Lib/PIL/SunImagePlugin.py')
-rw-r--r-- | lib/Python/Lib/PIL/SunImagePlugin.py | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/lib/Python/Lib/PIL/SunImagePlugin.py b/lib/Python/Lib/PIL/SunImagePlugin.py new file mode 100644 index 000000000..e0a7aa6ee --- /dev/null +++ b/lib/Python/Lib/PIL/SunImagePlugin.py @@ -0,0 +1,83 @@ +# +# The Python Imaging Library. +# $Id$ +# +# Sun image file handling +# +# History: +# 1995-09-10 fl Created +# 1996-05-28 fl Fixed 32-bit alignment +# 1998-12-29 fl Import ImagePalette module +# 2001-12-18 fl Fixed palette loading (from Jean-Claude Rimbault) +# +# Copyright (c) 1997-2001 by Secret Labs AB +# Copyright (c) 1995-1996 by Fredrik Lundh +# +# See the README file for information on usage and redistribution. +# + + +__version__ = "0.3" + + +from PIL import Image, ImageFile, ImagePalette, _binary + +i16 = _binary.i16be +i32 = _binary.i32be + + +def _accept(prefix): + return i32(prefix) == 0x59a66a95 + + +## +# Image plugin for Sun raster files. + +class SunImageFile(ImageFile.ImageFile): + + format = "SUN" + format_description = "Sun Raster File" + + def _open(self): + + # HEAD + s = self.fp.read(32) + if i32(s) != 0x59a66a95: + raise SyntaxError("not an SUN raster file") + + offset = 32 + + self.size = i32(s[4:8]), i32(s[8:12]) + + depth = i32(s[12:16]) + if depth == 1: + self.mode, rawmode = "1", "1;I" + elif depth == 8: + self.mode = rawmode = "L" + elif depth == 24: + self.mode, rawmode = "RGB", "BGR" + else: + raise SyntaxError("unsupported mode") + + compression = i32(s[20:24]) + + if i32(s[24:28]) != 0: + length = i32(s[28:32]) + offset = offset + length + self.palette = ImagePalette.raw("RGB;L", self.fp.read(length)) + if self.mode == "L": + self.mode = rawmode = "P" + + stride = (((self.size[0] * depth + 7) // 8) + 3) & (~3) + + if compression == 1: + self.tile = [("raw", (0, 0)+self.size, offset, (rawmode, stride))] + elif compression == 2: + self.tile = [("sun_rle", (0, 0)+self.size, offset, rawmode)] + +# +# registry + +Image.register_open("SUN", SunImageFile, _accept) + +Image.register_extension("SUN", ".ras") |