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- #
- # The Python Imaging Library.
- # $Id: XVThumbImagePlugin.py 2134 2004-10-06 08:55:20Z fredrik $
- #
- # XV Thumbnail file handler by Charles E. "Gene" Cash
- # (gcash@magicnet.net)
- #
- # see xvcolor.c and xvbrowse.c in the sources to John Bradley's XV,
- # available from ftp://ftp.cis.upenn.edu/pub/xv/
- #
- # history:
- # 98-08-15 cec created (b/w only)
- # 98-12-09 cec added color palette
- # 98-12-28 fl added to PIL (with only a few very minor modifications)
- #
- # To do:
- # FIXME: make save work (this requires quantization support)
- #
-
- __version__ = "0.1"
-
- import string
- import Image, ImageFile, ImagePalette
-
- # standard color palette for thumbnails (RGB332)
- PALETTE = ""
- for r in range(8):
- for g in range(8):
- for b in range(4):
- PALETTE = PALETTE + (chr((r*255)/7)+chr((g*255)/7)+chr((b*255)/3))
-
- ##
- # Image plugin for XV thumbnail images.
-
- class XVThumbImageFile(ImageFile.ImageFile):
-
- format = "XVThumb"
- format_description = "XV thumbnail image"
-
- def _open(self):
-
- # check magic
- s = self.fp.read(6)
- if s != "P7 332":
- raise SyntaxError, "not an XV thumbnail file"
-
- # skip info comments
- while 1:
- s = string.strip(self.fp.readline())
- if s == "#END_OF_COMMENTS":
- break
-
- # read header line
- s = string.split(self.fp.readline())
-
- self.mode = "P"
- self.size = int(s[0]), int(s[1])
-
- self.palette = ImagePalette.raw("RGB", PALETTE)
-
- self.tile = [
- ("raw", (0, 0)+self.size,
- self.fp.tell(), (self.mode, 0, 1)
- )]
-
- # --------------------------------------------------------------------
-
- Image.register_open("XVThumb", XVThumbImageFile)
-