libvips/test/test_foreign.py

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#!/usr/bin/python
from __future__ import division
import unittest
import math
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import os
#import logging
#logging.basicConfig(level = logging.DEBUG)
from gi.repository import Vips
Vips.leak_set(True)
# an expanding zip ... if either of the args is not a list, duplicate it down
# the other
def zip_expand(x, y):
if isinstance(x, list) and isinstance(y, list):
return list(zip(x, y))
elif isinstance(x, list):
return [[i, y] for i in x]
elif isinstance(y, list):
return [[x, j] for j in y]
else:
return [[x, y]]
class TestForeign(unittest.TestCase):
# test a pair of things which can be lists for approx. equality
def assertAlmostEqualObjects(self, a, b, places = 4, msg = ''):
#print 'assertAlmostEqualObjects %s = %s' % (a, b)
for x, y in zip_expand(a, b):
self.assertAlmostEqual(x, y, places = places, msg = msg)
def setUp(self):
self.matlab_file = "images/sample.mat"
self.jpeg_file = "images/IMG_4618.jpg"
self.png_file = "images/sample.png"
self.tiff_file = "images/sample.tif"
self.profile_file = "images/sRGB.icm"
self.analyze_file = "images/t00740_tr1_segm.hdr"
self.gif_file = "images/cramps.gif"
self.webp_file = "images/1.webp"
self.exr_file = "images/sample.exr"
self.fits_file = "images/WFPC2u5780205r_c0fx.fits"
self.openslide_file = "images/CMU-1-Small-Region.svs"
self.colour = Vips.Image.jpegload(self.jpeg_file)
self.mono = self.colour.extract_band(1)
self.rad = self.colour.float2rad()
self.cmyk = self.colour.bandjoin(self.mono)
self.cmyk = self.cmyk.copy(interpretation = Vips.Interpretation.CMYK)
# this will load via libMagick as a colour image
im = Vips.Image.new_from_file(self.gif_file)
self.onebit = im[1] > 128
# we have test files for formats which have a clear standard
def file_loader(self, loader, test_file, validate):
im = Vips.call(loader, test_file)
validate(self, im)
im = Vips.Image.new_from_file(test_file)
validate(self, im)
def buffer_loader(self, loader, test_file, validate):
with open(test_file, 'rb') as f:
buf = f.read()
im = Vips.call(loader, buf)
validate(self, im)
im = Vips.Image.new_from_buffer(buf, "")
validate(self, im)
def save_load(self, format, im):
x = Vips.Image.new_temp_file(format)
im.write(x)
self.assertEqual(im.width, x.width)
self.assertEqual(im.height, x.height)
self.assertEqual(im.bands, x.bands)
max_diff = (im - x).abs().max()
self.assertEqual(max_diff, 0)
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def save_load_file(self, filename, options, im, thresh):
# yuk!
# but we can't set format parameters for Vips.Image.new_temp_file()
im.write_to_file(filename + options)
x = Vips.Image.new_from_file(filename)
self.assertEqual(im.width, x.width)
self.assertEqual(im.height, x.height)
self.assertEqual(im.bands, x.bands)
max_diff = (im - x).abs().max()
self.assertTrue(max_diff <= thresh)
x = None
os.unlink(filename)
def test_jpeg(self):
if not Vips.type_find("VipsForeign", "jpegload"):
print("no jpeg support in this vips, skipping test")
return
def jpeg_valid(self, im):
a = im(10, 10)
self.assertAlmostEqualObjects(a, [6, 5, 3])
profile = im.get_value("icc-profile-data")
self.assertEqual(len(profile), 1352)
self.assertEqual(im.width, 1024)
self.assertEqual(im.height, 768)
self.assertEqual(im.bands, 3)
self.file_loader("jpegload", self.jpeg_file, jpeg_valid)
self.buffer_loader("jpegload_buffer", self.jpeg_file, jpeg_valid)
self.save_load("%s.jpg", self.mono)
self.save_load("%s.jpg", self.colour)
def test_png(self):
if not Vips.type_find("VipsForeign", "pngload"):
print("no png support in this vips, skipping test")
return
def png_valid(self, im):
a = im(10, 10)
self.assertAlmostEqualObjects(a, [38671.0, 33914.0, 26762.0])
self.assertEqual(im.width, 290)
self.assertEqual(im.height, 442)
self.assertEqual(im.bands, 3)
self.file_loader("pngload", self.png_file, png_valid)
self.buffer_loader("pngload_buffer", self.png_file, png_valid)
self.save_load("%s.png", self.mono)
self.save_load("%s.png", self.colour)
def test_tiff(self):
if not Vips.type_find("VipsForeign", "tiffload"):
print("no tiff support in this vips, skipping test")
return
def tiff_valid(self, im):
a = im(10, 10)
self.assertAlmostEqualObjects(a, [38671.0, 33914.0, 26762.0])
self.assertEqual(im.width, 290)
self.assertEqual(im.height, 442)
self.assertEqual(im.bands, 3)
self.file_loader("tiffload", self.tiff_file, tiff_valid)
self.buffer_loader("tiffload_buffer", self.tiff_file, tiff_valid)
self.save_load("%s.tif", self.mono)
self.save_load("%s.tif", self.colour)
self.save_load("%s.tif", self.cmyk)
self.save_load("%s.tif", self.onebit)
self.save_load("%s.tif[squash]", self.onebit)
self.save_load("%s.tif[miniswhite]", self.onebit)
self.save_load("%s.tif[squash,miniswhite]", self.onebit)
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self.save_load_file("test.tif", "[tile]", self.colour, 0)
self.save_load_file("test.tif", "[tile,pyramid]", self.colour, 0)
self.save_load_file("test.tif",
"[tile,pyramid,compression=jpeg]", self.colour, 0)
self.save_load_file("test.tif", "[bigtiff]", self.colour, 0)
self.save_load_file("test.tif", "[compression=jpeg]", self.colour, 10)
self.save_load_file("test.tif",
"[tile,tile-width=256]", self.colour, 10)
def test_magickload(self):
if not Vips.type_find("VipsForeign", "magickload"):
print("no magick support in this vips, skipping test")
return
def gif_valid(self, im):
a = im(10, 10)
self.assertAlmostEqual(a, [33, 33, 33])
self.assertEqual(im.width, 159)
self.assertEqual(im.height, 203)
self.assertEqual(im.bands, 3)
self.file_loader("magickload", self.gif_file, gif_valid)
self.buffer_loader("magickload_buffer", self.gif_file, gif_valid)
def test_webp(self):
if not Vips.type_find("VipsForeign", "webpload"):
print("no webp support in this vips, skipping test")
return
def webp_valid(self, im):
a = im(10, 10)
self.assertAlmostEqualObjects(a, [71, 166, 236])
self.assertEqual(im.width, 550)
self.assertEqual(im.height, 368)
self.assertEqual(im.bands, 3)
self.file_loader("webpload", self.webp_file, webp_valid)
self.buffer_loader("webpload_buffer", self.webp_file, webp_valid)
self.save_load("%s.webp", self.colour)
def test_analyzeload(self):
def analyze_valid(self, im):
a = im(10, 10)
self.assertAlmostEqual(a[0], 3335)
self.assertEqual(im.width, 128)
self.assertEqual(im.height, 8064)
self.assertEqual(im.bands, 1)
self.file_loader("analyzeload", self.analyze_file, analyze_valid)
def test_matload(self):
if not Vips.type_find("VipsForeign", "matload"):
print("no matlab support in this vips, skipping test")
return
def matlab_valid(self, im):
a = im(10, 10)
self.assertAlmostEqualObjects(a, [38671.0, 33914.0, 26762.0])
self.assertEqual(im.width, 290)
self.assertEqual(im.height, 442)
self.assertEqual(im.bands, 3)
self.file_loader("matload", self.matlab_file, matlab_valid)
def test_openexrload(self):
if not Vips.type_find("VipsForeign", "openexrload"):
print("no openexr support in this vips, skipping test")
return
def exr_valid(self, im):
a = im(10, 10)
self.assertAlmostEqualObjects(a, [0.124512, 0.159668,
0.040375, 1.0],
places = 5)
self.assertEqual(im.width, 610)
self.assertEqual(im.height, 406)
self.assertEqual(im.bands, 4)
self.file_loader("openexrload", self.exr_file, exr_valid)
def test_fitsload(self):
if not Vips.type_find("VipsForeign", "fitsload"):
print("no fits support in this vips, skipping test")
return
def fits_valid(self, im):
a = im(10, 10)
self.assertAlmostEqualObjects(a, [-0.165013, -0.148553, 1.09122,
-0.942242],
places = 5)
self.assertEqual(im.width, 200)
self.assertEqual(im.height, 200)
self.assertEqual(im.bands, 4)
self.file_loader("fitsload", self.fits_file, fits_valid)
self.save_load("%s.fits", self.mono)
def test_openslideload(self):
if not Vips.type_find("VipsForeign", "openslideload"):
print("no openslide support in this vips, skipping test")
return
def openslide_valid(self, im):
a = im(10, 10)
self.assertAlmostEqualObjects(a, [244, 250, 243, 255])
self.assertEqual(im.width, 2220)
self.assertEqual(im.height, 2967)
self.assertEqual(im.bands, 4)
self.file_loader("openslideload", self.openslide_file, openslide_valid)
def test_csv(self):
self.save_load("%s.csv", self.mono)
def test_matrix(self):
self.save_load("%s.mat", self.mono)
def test_ppm(self):
self.save_load("%s.ppm", self.mono)
self.save_load("%s.ppm", self.colour)
def test_rad(self):
self.save_load("%s.hdr", self.colour)
if __name__ == '__main__':
unittest.main()