mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-12-30 20:06:17 +03:00
76 lines
1.8 KiB
Python
76 lines
1.8 KiB
Python
#
|
|
# The Python Imaging Library.
|
|
# $Id$
|
|
#
|
|
# 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)
|
|
#
|
|
|
|
from PIL import Image, ImageFile, ImagePalette, _binary
|
|
|
|
__version__ = "0.1"
|
|
|
|
o8 = _binary.o8
|
|
|
|
# standard color palette for thumbnails (RGB332)
|
|
PALETTE = b""
|
|
for r in range(8):
|
|
for g in range(8):
|
|
for b in range(4):
|
|
PALETTE = PALETTE + (o8((r*255)//7)+o8((g*255)//7)+o8((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 != b"P7 332":
|
|
raise SyntaxError("not an XV thumbnail file")
|
|
|
|
# Skip to beginning of next line
|
|
self.fp.readline()
|
|
|
|
# skip info comments
|
|
while True:
|
|
s = self.fp.readline()
|
|
if not s:
|
|
raise SyntaxError("Unexpected EOF reading XV thumbnail file")
|
|
if s[0] != b'#':
|
|
break
|
|
|
|
# parse header line (already read)
|
|
s = s.strip().split()
|
|
|
|
self.mode = "P"
|
|
self.size = int(s[0:1]), int(s[1:2])
|
|
|
|
self.palette = ImagePalette.raw("RGB", PALETTE)
|
|
|
|
self.tile = [
|
|
("raw", (0, 0)+self.size,
|
|
self.fp.tell(), (self.mode, 0, 1)
|
|
)]
|
|
|
|
# --------------------------------------------------------------------
|
|
|
|
Image.register_open(XVThumbImageFile.format, XVThumbImageFile)
|