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LSST Data Management Base Package
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_compression.py
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1# This file is part of afw.
2#
3# Developed for the LSST Data Management System.
4# This product includes software developed by the LSST Project
5# (https://www.lsst.org).
6# See the COPYRIGHT file at the top-level directory of this distribution
7# for details of code ownership.
8#
9# This program is free software: you can redistribute it and/or modify
10# it under the terms of the GNU General Public License as published by
11# the Free Software Foundation, either version 3 of the License, or
12# (at your option) any later version.
13#
14# This program is distributed in the hope that it will be useful,
15# but WITHOUT ANY WARRANTY; without even the implied warranty of
16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17# GNU General Public License for more details.
18#
19# You should have received a copy of the GNU General Public License
20# along with this program. If not, see <https://www.gnu.org/licenses/>.
21
22__all__ = ["imageCompressionDisabled"]
23
24from contextlib import contextmanager
25from ._fits import getAllowImageCompression, setAllowImageCompression
26
27
28@contextmanager
30 """Create a context where FITS image compression is disabled.
31
32 The previous compression setting is restored on exit.
33 """
34 old = getAllowImageCompression()
35 try:
36 setAllowImageCompression(False)
37 yield
38 finally:
39 setAllowImageCompression(old)