Coverage for /var/srv/projects/api.amasfac.comuna18.com/tmp/venv/lib/python3.9/site-packages/PIL/ImageSequence.py: 19%

1# 

2# The Python Imaging Library. 

3# $Id$ 

4# 

5# sequence support classes 

6# 

7# history: 

8# 1997-02-20 fl Created 

9# 

10# Copyright (c) 1997 by Secret Labs AB. 

11# Copyright (c) 1997 by Fredrik Lundh. 

12# 

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

14# 

15 

16## 

17 

18 

19class Iterator: 

20 """ 

21 This class implements an iterator object that can be used to loop 

22 over an image sequence. 

23 

24 You can use the ``[]`` operator to access elements by index. This operator 

25 will raise an :py:exc:`IndexError` if you try to access a nonexistent 

26 frame. 

27 

28 :param im: An image object. 

29 """ 

30 

31 def __init__(self, im): 

32 if not hasattr(im, "seek"): 

33 raise AttributeError("im must have seek method") 

34 self.im = im 

35 self.position = getattr(self.im, "_min_frame", 0) 

36 

37 def __getitem__(self, ix): 

38 try: 

39 self.im.seek(ix) 

40 return self.im 

41 except EOFError as e: 

42 raise IndexError from e # end of sequence 

43 

44 def __iter__(self): 

45 return self 

46 

47 def __next__(self): 

48 try: 

49 self.im.seek(self.position) 

50 self.position += 1 

51 return self.im 

52 except EOFError as e: 

53 raise StopIteration from e 

54 

55 

56def all_frames(im, func=None): 

57 """ 

58 Applies a given function to all frames in an image or a list of images. 

59 The frames are returned as a list of separate images. 

60 

61 :param im: An image, or a list of images. 

62 :param func: The function to apply to all of the image frames. 

63 :returns: A list of images. 

64 """ 

65 if not isinstance(im, list): 

66 im = [im] 

67 

68 ims = [] 

69 for imSequence in im: 

70 current = imSequence.tell() 

71 

72 ims += [im_frame.copy() for im_frame in Iterator(imSequence)] 

73 

74 imSequence.seek(current) 

75 return [func(im) for im in ims] if func else ims