1 files changed, 86 insertions, 0 deletions
diff --git a/PIL/GdImageFile.py b/PIL/GdImageFile.py
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+++ b/PIL/GdImageFile.py
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+#
+# The Python Imaging Library.
+# $Id: GdImageFile.py 2134 2004-10-06 08:55:20Z fredrik $
+#
+# GD file handling
+#
+# History:
+# 1996-04-12 fl   Created
+#
+# Copyright (c) 1997 by Secret Labs AB.
+# Copyright (c) 1996 by Fredrik Lundh.
+#
+# See the README file for information on usage and redistribution.
+#
+
+
+# NOTE: This format cannot be automatically recognized, so the
+# class is not registered for use with Image.open().  To open a
+# gd file, use the GdImageFile.open() function instead.
+
+# THE GD FORMAT IS NOT DESIGNED FOR DATA INTERCHANGE.  This
+# implementation is provided for convenience and demonstrational
+# purposes only.
+
+
+__version__ = "0.1"
+
+import string
+import Image, ImageFile, ImagePalette
+
+def i16(c):
+    return ord(c[1]) + (ord(c[0])<<8)
+
+##
+# Image plugin for the GD uncompressed format.  Note that this format
+# is not supported by the standard <b>Image.open</b> function.  To use
+# this plugin, you have to import the <b>GdImageFile</b> module and
+# use the <b>GdImageFile.open</b> function.
+
+class GdImageFile(ImageFile.ImageFile):
+
+    format = "GD"
+    format_description = "GD uncompressed images"
+
+    def _open(self):
+
+        # Header
+        s = self.fp.read(775)
+
+        self.mode = "L" # FIXME: "P"
+        self.size = i16(s[0:2]), i16(s[2:4])
+
+        # transparency index
+        tindex = i16(s[5:7])
+        if tindex < 256:
+            self.info["transparent"] = tindex
+
+        self.palette = ImagePalette.raw("RGB", s[7:])
+
+        self.tile = [("raw", (0,0)+self.size, 775, ("L", 0, -1))]
+
+##
+# Load texture from a GD image file.
+#
+# @param filename GD file name, or an opened file handle.
+# @param mode Optional mode.  In this version, if the mode argument
+#     is given, it must be "r".
+# @return An image instance.
+# @exception IOError If the image could not be read.
+
+def open(fp, mode = "r"):
+
+    if mode != "r":
+        raise ValueError("bad mode")
+
+    if type(fp) == type(""):
+        import __builtin__
+        filename = fp
+        fp = __builtin__.open(fp, "rb")
+    else:
+        filename = ""
+
+    try:
+        return GdImageFile(fp, filename)
+    except SyntaxError:
+        raise IOError("cannot identify this image file")