# # The Python Imaging Library. # $Id$ # # 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" from PIL import Image, ImageFile, ImagePalette, _binary i8 = _binary.i8 i16 = _binary.i16le i32 = _binary.i32le o8 = _binary.o8 # # decoder def _accept(prefix): return i16(prefix[4:6]) in [0xAF11, 0xAF12] ## # Image plugin for the FLI/FLC animation format. Use the seek # 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 not (magic in [0xAF11, 0xAF12] and i16(s[14:16]) in [0, 3] and # flags s[20:22] == b"\x00\x00"): # reserved 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 = [(a,a,a) for a in 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 = [o8(r)+o8(g)+o8(b) for (r,g,b) in palette] self.palette = ImagePalette.raw("RGB", b"".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 + i8(s[0]) n = i8(s[1]) if n == 0: n = 256 s = self.fp.read(n * 3) for n in range(0, len(s), 3): r = i8(s[n]) << shift g = i8(s[n+1]) << shift b = i8(s[n+2]) << shift palette[i] = (r, g, b) 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")