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-rw-r--r--PIL/FliImagePlugin.py142
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diff --git a/PIL/FliImagePlugin.py b/PIL/FliImagePlugin.py
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-#
-# The Python Imaging Library.
-# $Id: FliImagePlugin.py 2134 2004-10-06 08:55:20Z fredrik $
-#
-# FLI/FLC file handling.
-#
-# History:
-# 95-09-01 fl Created
-# 97-01-03 fl Fixed parser, setup decoder tile
-# 98-07-15 fl Renamed offset attribute to avoid name clash
-#
-# Copyright (c) Secret Labs AB 1997-98.
-# Copyright (c) Fredrik Lundh 1995-97.
-#
-# See the README file for information on usage and redistribution.
-#
-
-
-__version__ = "0.2"
-
-import Image, ImageFile, ImagePalette
-import string
-
-
-def i16(c):
- return ord(c[0]) + (ord(c[1])<<8)
-
-def i32(c):
- return ord(c[0]) + (ord(c[1])<<8) + (ord(c[2])<<16) + (ord(c[3])<<24)
-
-#
-# decoder
-
-def _accept(prefix):
- return i16(prefix[4:6]) in [0xAF11, 0xAF12]
-
-##
-# Image plugin for the FLI/FLC animation format. Use the <b>seek</b>
-# method to load individual frames.
-
-class FliImageFile(ImageFile.ImageFile):
-
- format = "FLI"
- format_description = "Autodesk FLI/FLC Animation"
-
- def _open(self):
-
- # HEAD
- s = self.fp.read(128)
- magic = i16(s[4:6])
- if magic not in [0xAF11, 0xAF12]:
- raise SyntaxError, "not an FLI/FLC file"
-
- # image characteristics
- self.mode = "P"
- self.size = i16(s[8:10]), i16(s[10:12])
-
- # animation speed
- duration = i32(s[16:20])
- if magic == 0xAF11:
- duration = (duration * 1000) / 70
- self.info["duration"] = duration
-
- # look for palette
- palette = map(lambda a: (a,a,a), range(256))
-
- s = self.fp.read(16)
-
- self.__offset = 128
-
- if i16(s[4:6]) == 0xF100:
- # prefix chunk; ignore it
- self.__offset = self.__offset + i32(s)
- s = self.fp.read(16)
-
- if i16(s[4:6]) == 0xF1FA:
- # look for palette chunk
- s = self.fp.read(6)
- if i16(s[4:6]) == 11:
- self._palette(palette, 2)
- elif i16(s[4:6]) == 4:
- self._palette(palette, 0)
-
- palette = map(lambda (r,g,b): chr(r)+chr(g)+chr(b), palette)
- self.palette = ImagePalette.raw("RGB", string.join(palette, ""))
-
- # set things up to decode first frame
- self.frame = -1
- self.__fp = self.fp
-
- self.seek(0)
-
- def _palette(self, palette, shift):
- # load palette
-
- i = 0
- for e in range(i16(self.fp.read(2))):
- s = self.fp.read(2)
- i = i + ord(s[0])
- n = ord(s[1])
- if n == 0:
- n = 256
- s = self.fp.read(n * 3)
- for n in range(0, len(s), 3):
- r = ord(s[n]) << shift
- g = ord(s[n+1]) << shift
- b = ord(s[n+2]) << shift
- palette[i] = (r, g, b)
- i = i + 1
-
- def seek(self, frame):
-
- if frame != self.frame + 1:
- raise ValueError, "cannot seek to frame %d" % frame
- self.frame = frame
-
- # move to next frame
- self.fp = self.__fp
- self.fp.seek(self.__offset)
-
- s = self.fp.read(4)
- if not s:
- raise EOFError
-
- framesize = i32(s)
-
- self.decodermaxblock = framesize
- self.tile = [("fli", (0,0)+self.size, self.__offset, None)]
-
- self.__offset = self.__offset + framesize
-
- def tell(self):
-
- return self.frame
-
-#
-# registry
-
-Image.register_open("FLI", FliImageFile, _accept)
-
-Image.register_extension("FLI", ".fli")
-Image.register_extension("FLI", ".flc")