annotate sat/tools/images.py @ 3131:d6da17f6e4ce

tools (common/files_utils): fixed get_unique_name when `path` is a str and not a Path
author Goffi <goffi@goffi.org>
date Mon, 27 Jan 2020 19:53:31 +0100
parents 2cc2f65379f7
children 9d0df638c8b4
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
3066
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
1 #!/usr/bin/env python3
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
2 # -*- coding: utf-8 -*-
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
3
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
4 # SAT: a jabber client
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
5 # Copyright (C) 2009-2019 Jérôme Poisson (goffi@goffi.org)
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
6
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
7 # This program is free software: you can redistribute it and/or modify
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
8 # it under the terms of the GNU Affero General Public License as published by
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
9 # the Free Software Foundation, either version 3 of the License, or
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
10 # (at your option) any later version.
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
11
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
12 # This program is distributed in the hope that it will be useful,
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
15 # GNU Affero General Public License for more details.
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
16
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
17 # You should have received a copy of the GNU Affero General Public License
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
19
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
20 """Methods to manipulate images"""
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
21
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
22 import tempfile
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
23 from PIL import Image
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
24 from sat.core.constants import Const as C
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
25 from pathlib import Path
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
26 from twisted.internet import threads
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
27
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
28
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
29 def checkImage(host, path, context=C.CONTEXT_CHAT):
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
30 """Analyze image and return a report
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
31
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
32 report will indicate if image is too large, and the recommended new size if this is
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
33 the case
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
34 @param host: SàT instance
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
35 @param path(str, pathlib.Path): image to open
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
36 @param context(str): context in which the image is transfered
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
37 @return dict: report on image, with following keys:
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
38 - too_large: true if image is oversized
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
39 - recommended_size: if too_large is True, recommended size to use
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
40 """
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
41 # TODO: context is not used yet
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
42 report = {}
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
43 image = Image.open(path)
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
44 max_size = tuple(host.memory.getConfig(None, "image_max", (1200, 720)))
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
45 if image.size > max_size:
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
46 report['too_large'] = True
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
47 if image.size[0] > max_size[0]:
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
48 factor = max_size[0] / image.size[0]
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
49 if image.size[1] * factor > max_size[1]:
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
50 factor = max_size[1] / image.size[1]
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
51 else:
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
52 factor = max_size[1] / image.size[1]
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
53 report['recommended_size'] = [image.width*factor, image.height*factor]
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
54 else:
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
55 report['too_large'] = False
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
56
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
57 return report
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
58
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
59
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
60 def _resizeImageBlocking(image_path, new_size):
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
61 im_path = Path(image_path)
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
62 im = Image.open(im_path)
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
63 resized = im.resize(new_size, Image.LANCZOS)
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
64 with tempfile.NamedTemporaryFile(suffix=im_path.suffix, delete=False) as f:
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
65 resized.save(f, format=im.format)
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
66 return Path(f.name)
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
67
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
68
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
69 def resizeImage(image_path, new_size):
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
70 """Resize an image to a new temporary file, and return it path
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
71
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
72 @param image_path(str, Path): path of the original image
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
73 @param new_size(tuple[int, int]): size to use for new image
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
74 @return (Path): path of the resized file. The image at this path must be deleted
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
75 after use
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
76 """
2cc2f65379f7 core: added imageCheck and imageResize methods:
Goffi <goffi@goffi.org>
parents:
diff changeset
77 return threads.deferToThread(_resizeImageBlocking, image_path, new_size)