Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.11/site-packages/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 

23__lazy_modules__ = {"PIL._binary"} 

24 

25from . import Image, ImageFile 

26from ._binary import i16le as i16 

27 

28# 

29# helpers 

30 

31 

32def _accept(prefix: bytes) -> bool: 

33 return prefix.startswith(b"\200\350\000\000") 

34 

35 

36## 

37# Image plugin for PIXAR raster images. 

38 

39 

40class PixarImageFile(ImageFile.ImageFile): 

41 format = "PIXAR" 

42 format_description = "PIXAR raster image" 

43 

44 def _open(self) -> None: 

45 # assuming a 4-byte magic label 

46 assert self.fp is not None 

47 

48 s = self.fp.read(4) 

49 if not _accept(s): 

50 msg = "not a PIXAR file" 

51 raise SyntaxError(msg) 

52 

53 # read rest of header 

54 s = s + self.fp.read(508) 

55 

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

57 

58 # get channel/depth descriptions 

59 mode = i16(s, 424), i16(s, 426) 

60 

61 if mode == (14, 2): 

62 self._mode = "RGB" 

63 # FIXME: to be continued... 

64 

65 # create tile descriptor (assuming "dumped") 

66 self.tile = [ImageFile._Tile("raw", None, 1024, self.mode)] 

67 

68 

69# 

70# -------------------------------------------------------------------- 

71 

72Image.register_open(PixarImageFile.format, PixarImageFile, _accept) 

73 

74Image.register_extension(PixarImageFile.format, ".pxr")