Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.11/site-packages/PIL/PcdImagePlugin.py: 97%

1# 

2# The Python Imaging Library. 

3# $Id$ 

4# 

5# PCD file handling 

6# 

7# History: 

8# 96-05-10 fl Created 

9# 96-05-27 fl Added draft mode (128x192, 256x384) 

10# 

11# Copyright (c) Secret Labs AB 1997. 

12# Copyright (c) Fredrik Lundh 1996. 

13# 

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

15# 

16from __future__ import annotations 

17 

18from . import Image, ImageFile 

19 

20## 

21# Image plugin for PhotoCD images. This plugin only reads the 768x512 

22# image from the file; higher resolutions are encoded in a proprietary 

23# encoding. 

24 

25 

26class PcdImageFile(ImageFile.ImageFile): 

27 format = "PCD" 

28 format_description = "Kodak PhotoCD" 

29 

30 def _open(self) -> None: 

31 # rough 

32 assert self.fp is not None 

33 

34 self.fp.seek(2048) 

35 s = self.fp.read(1539) 

36 

37 if not s.startswith(b"PCD_"): 

38 msg = "not a PCD file" 

39 raise SyntaxError(msg) 

40 

41 orientation = s[1538] & 3 

42 self.tile_post_rotate = None 

43 if orientation == 1: 

44 self.tile_post_rotate = 90 

45 elif orientation == 3: 

46 self.tile_post_rotate = 270 

47 

48 self._mode = "RGB" 

49 self._size = (512, 768) if orientation in (1, 3) else (768, 512) 

50 self.tile = [ImageFile._Tile("pcd", (0, 0, 768, 512), 96 * 2048)] 

51 

52 def load_prepare(self) -> None: 

53 if self._im is None and self.tile_post_rotate: 

54 self.im = Image.core.new(self.mode, (768, 512)) 

55 ImageFile.ImageFile.load_prepare(self) 

56 

57 def load_end(self) -> None: 

58 if self.tile_post_rotate: 

59 # Handle rotated PCDs 

60 self.im = self.rotate(self.tile_post_rotate, expand=True).im 

61 

62 

63# 

64# registry 

65 

66Image.register_open(PcdImageFile.format, PcdImageFile) 

67 

68Image.register_extension(PcdImageFile.format, ".pcd")