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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Project: Fable Input Output
# https://github.com/silx-kit/fabio
#
# Copyright (C) European Synchrotron Radiation Facility, Grenoble, France
#
# Principal author: Jérôme Kieffer (Jerome.Kieffer@ESRF.eu)
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
"""
Test JPEG 2000 format
"""
from __future__ import print_function, with_statement, division, absolute_import
import unittest
import numpy
import logging
try:
from PIL import Image
except ImportError:
Image = None
logger = logging.getLogger(__name__)
import fabio
from .. import jpeg2kimage
from .utilstest import UtilsTest
def isPilUsable():
if jpeg2kimage.PIL is None:
return False
try:
if hasattr(jpeg2kimage.PIL.Image, "frombytes"):
frombytes = jpeg2kimage.PIL.Image.frombytes
else:
frombytes = jpeg2kimage.PIL.Image.frombuffer
frombytes("1", (2, 2), b"", decoder_name='jpeg2k')
except Exception as e:
if e.args[0] == "decoder jpeg2k not available":
return False
# Skip decoding error
return True
def isGlymurUsable():
if jpeg2kimage.glymur is None:
return False
import glymur
if glymur.version.openjpeg_version_tuple < [1, 5, 0]:
return False
return True
class TestJpeg2KImage(unittest.TestCase):
"""Test the class format"""
def setUp(self):
if not isPilUsable() and not isGlymurUsable():
self.skipTest("PIL nor glymur are available")
def loadImage(self, filename):
image_format = jpeg2kimage.Jpeg2KImage()
image = image_format.read(filename)
return image
def test_open_uint8(self):
filename = "binned_data_uint8.jp2"
filename = UtilsTest.getimage(filename + ".bz2")[:-4]
image = self.loadImage(filename)
self.assertEqual(image.data.shape, (120, 120))
self.assertEqual(image.data.dtype, numpy.uint8)
def test_open_uint16(self):
filename = "binned_data_uint16.jp2"
filename = UtilsTest.getimage(filename + ".bz2")[:-4]
image_format = jpeg2kimage.Jpeg2KImage()
image = image_format.read(filename)
self.assertEqual(image.data.shape, (120, 120))
self.assertEqual(image.data.dtype, numpy.uint16)
def test_open_wrong_format(self):
filename = "MultiFrame.edf"
filename = UtilsTest.getimage(filename + ".bz2")[:-4]
image_format = jpeg2kimage.Jpeg2KImage()
try:
_image = image_format.read(filename)
self.fail()
except IOError:
pass
def test_open_missing_file(self):
filename = "___missing_file___.___"
image_format = jpeg2kimage.Jpeg2KImage()
try:
_image = image_format.read(filename)
self.fail()
except IOError:
pass
class TestJpeg2KImage_PIL(TestJpeg2KImage):
"""Test the class format using a specific decoder"""
def setUp(self):
if not isPilUsable() and not isGlymurUsable():
self.skipTest("PIL is not available")
@classmethod
def setUpClass(cls):
# Remove other decoders
cls.old = jpeg2kimage.glymur
jpeg2kimage.glymur = None
@classmethod
def tearDownClass(cls):
# Remove other decoders
jpeg2kimage.glymur = cls.old
cls.old = None
class TestJpeg2KImage_glymur(TestJpeg2KImage):
"""Test the class format using a specific decoder"""
def setUp(self):
if not isGlymurUsable():
self.skipTest("glymur is not available")
@classmethod
def setUpClass(cls):
# Remove other decoders
cls.old = jpeg2kimage.PIL
jpeg2kimage.PIL = None
@classmethod
def tearDownClass(cls):
# Remove other decoders
jpeg2kimage.PIL = cls.old
cls.old = None
class TestJpeg2KImage_fabio(TestJpeg2KImage):
"""Test the format inside the fabio framework"""
def loadImage(self, filename):
"""Use the fabio API instead of using the image format"""
image = fabio.open(filename)
return image
def suite():
loader = unittest.defaultTestLoader.loadTestsFromTestCase
testsuite = unittest.TestSuite()
testsuite.addTest(loader(TestJpeg2KImage))
testsuite.addTest(loader(TestJpeg2KImage_PIL))
testsuite.addTest(loader(TestJpeg2KImage_glymur))
testsuite.addTest(loader(TestJpeg2KImage_fabio))
return testsuite
if __name__ == '__main__':
runner = unittest.TextTestRunner()
runner.run(suite())
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