Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/pillow-10.4.0-py3.8-linux-x86_64.egg/PIL/PixarImagePlugin.py: 50%

1# 

2# The Python Imaging Library. 

3# $Id$ 

4# 

5# PIXAR raster support for PIL 

6# 

7# history: 

8# 97-01-29 fl Created 

9# 

10# notes: 

11# This is incomplete; it is based on a few samples created with 

12# Photoshop 2.5 and 3.0, and a summary description provided by 

13# Greg Coats <gcoats@labiris.er.usgs.gov>. Hopefully, "L" and 

14# "RGBA" support will be added in future versions. 

15# 

16# Copyright (c) Secret Labs AB 1997. 

17# Copyright (c) Fredrik Lundh 1997. 

18# 

19# See the README file for information on usage and redistribution. 

20# 

21from __future__ import annotations 

22 

23from . import Image, ImageFile 

24from ._binary import i16le as i16 

25 

26# 

27# helpers 

28 

29 

30def _accept(prefix: bytes) -> bool: 

31 return prefix[:4] == b"\200\350\000\000" 

32 

33 

34## 

35# Image plugin for PIXAR raster images. 

36 

37 

38class PixarImageFile(ImageFile.ImageFile): 

39 format = "PIXAR" 

40 format_description = "PIXAR raster image" 

41 

42 def _open(self) -> None: 

43 # assuming a 4-byte magic label 

44 assert self.fp is not None 

45 

46 s = self.fp.read(4) 

47 if not _accept(s): 

48 msg = "not a PIXAR file" 

49 raise SyntaxError(msg) 

50 

51 # read rest of header 

52 s = s + self.fp.read(508) 

53 

54 self._size = i16(s, 418), i16(s, 416) 

55 

56 # get channel/depth descriptions 

57 mode = i16(s, 424), i16(s, 426) 

58 

59 if mode == (14, 2): 

60 self._mode = "RGB" 

61 # FIXME: to be continued... 

62 

63 # create tile descriptor (assuming "dumped") 

64 self.tile = [("raw", (0, 0) + self.size, 1024, (self.mode, 0, 1))] 

65 

66 

67# 

68# -------------------------------------------------------------------- 

69 

70Image.register_open(PixarImageFile.format, PixarImageFile, _accept) 

71 

72Image.register_extension(PixarImageFile.format, ".pxr")