843 lines
30 KiB
Python
843 lines
30 KiB
Python
# vim: set fileencoding=utf-8 :
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import sys
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import os
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import shutil
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import tempfile
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import pytest
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import pyvips
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from helpers import \
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JPEG_FILE, SRGB_FILE, MATLAB_FILE, PNG_FILE, TIF_FILE, OME_FILE, \
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ANALYZE_FILE, GIF_FILE, WEBP_FILE, EXR_FILE, FITS_FILE, OPENSLIDE_FILE, \
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PDF_FILE, SVG_FILE, SVGZ_FILE, SVG_GZ_FILE, GIF_ANIM_FILE, DICOM_FILE, \
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BMP_FILE, NIFTI_FILE, ICO_FILE, \
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temp_filename, assert_almost_equal_objects, have, skip_if_no
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class TestForeign:
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tempdir = None
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@classmethod
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def setup_class(cls):
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cls.tempdir = tempfile.mkdtemp()
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cls.colour = pyvips.Image.jpegload(JPEG_FILE)
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cls.mono = cls.colour.extract_band(1)
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# we remove the ICC profile: the RGB one will no longer be appropriate
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cls.mono.remove("icc-profile-data")
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cls.rad = cls.colour.float2rad()
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cls.rad.remove("icc-profile-data")
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cls.cmyk = cls.colour.bandjoin(cls.mono)
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cls.cmyk = cls.cmyk.copy(interpretation=pyvips.Interpretation.CMYK)
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cls.cmyk.remove("icc-profile-data")
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im = pyvips.Image.new_from_file(GIF_FILE)
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cls.onebit = im > 128
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@classmethod
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def teardown_class(cls):
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shutil.rmtree(cls.tempdir, ignore_errors=True)
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# we have test files for formats which have a clear standard
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def file_loader(self, loader, test_file, validate):
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im = pyvips.Operation.call(loader, test_file)
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validate(im)
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im = pyvips.Image.new_from_file(test_file)
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validate(im)
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def buffer_loader(self, loader, test_file, validate):
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with open(test_file, 'rb') as f:
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buf = f.read()
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im = pyvips.Operation.call(loader, buf)
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validate(im)
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im = pyvips.Image.new_from_buffer(buf, "")
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validate(im)
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def save_load(self, format, im):
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x = pyvips.Image.new_temp_file(format)
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im.write(x)
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assert im.width == x.width
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assert im.height == x.height
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assert im.bands == x.bands
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max_diff = (im - x).abs().max()
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assert max_diff == 0
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def save_load_file(self, format, options, im, thresh):
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# yuk!
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# but we can't set format parameters for pyvips.Image.new_temp_file()
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filename = temp_filename(self.tempdir, format)
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im.write_to_file(filename + options)
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x = pyvips.Image.new_from_file(filename)
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assert im.width == x.width
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assert im.height == x.height
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assert im.bands == x.bands
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max_diff = (im - x).abs().max()
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assert max_diff <= thresh
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x = None
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def save_load_buffer(self, saver, loader, im, max_diff=0, **kwargs):
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buf = pyvips.Operation.call(saver, im, **kwargs)
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x = pyvips.Operation.call(loader, buf)
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assert im.width == x.width
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assert im.height == x.height
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assert im.bands == x.bands
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assert (im - x).abs().max() <= max_diff
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def save_buffer_tempfile(self, saver, suf, im, max_diff=0):
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filename = temp_filename(self.tempdir, suf)
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buf = pyvips.Operation.call(saver, im)
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f = open(filename, 'wb')
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f.write(buf)
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f.close()
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x = pyvips.Image.new_from_file(filename)
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assert im.width == x.width
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assert im.height == x.height
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assert im.bands == x.bands
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assert (im - x).abs().max() <= max_diff
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def test_vips(self):
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self.save_load_file(".v", "", self.colour, 0)
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# check we can save and restore metadata
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filename = temp_filename(self.tempdir, ".v")
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self.colour.write_to_file(filename)
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x = pyvips.Image.new_from_file(filename)
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before_exif = self.colour.get("exif-data")
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after_exif = x.get("exif-data")
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assert len(before_exif) == len(after_exif)
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for i in range(len(before_exif)):
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assert before_exif[i] == after_exif[i]
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x = None
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@skip_if_no("jpegload")
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def test_jpeg(self):
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def jpeg_valid(im):
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a = im(10, 10)
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assert_almost_equal_objects(a, [6, 5, 3])
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profile = im.get("icc-profile-data")
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assert len(profile) == 1352
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assert im.width == 1024
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assert im.height == 768
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assert im.bands == 3
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self.file_loader("jpegload", JPEG_FILE, jpeg_valid)
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self.save_load("%s.jpg", self.mono)
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self.save_load("%s.jpg", self.colour)
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self.buffer_loader("jpegload_buffer", JPEG_FILE, jpeg_valid)
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self.save_load_buffer("jpegsave_buffer", "jpegload_buffer",
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self.colour, 80)
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# see if we have exif parsing: our test image has this field
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x = pyvips.Image.new_from_file(JPEG_FILE)
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if x.get_typeof("exif-ifd0-Orientation") != 0:
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# we need a copy of the image to set the new metadata on
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# otherwise we get caching problems
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# can set, save and load new orientation
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x = pyvips.Image.new_from_file(JPEG_FILE)
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x = x.copy()
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x.set("orientation", 2)
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filename = temp_filename(self.tempdir, '.jpg')
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x.write_to_file(filename)
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x = pyvips.Image.new_from_file(filename)
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y = x.get("orientation")
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assert y == 2
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# can remove orientation, save, load again, orientation
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# has reset
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x.remove("orientation")
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filename = temp_filename(self.tempdir, '.jpg')
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x.write_to_file(filename)
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x = pyvips.Image.new_from_file(filename)
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y = x.get("orientation")
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assert y == 1
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# autorotate load works
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x = pyvips.Image.new_from_file(JPEG_FILE)
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x = x.copy()
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x.set("orientation", 6)
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filename = temp_filename(self.tempdir, '.jpg')
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x.write_to_file(filename)
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x1 = pyvips.Image.new_from_file(filename)
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x2 = pyvips.Image.new_from_file(filename, autorotate=True)
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assert x1.width == x2.height
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assert x1.height == x2.width
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# can set, save and reload ASCII string fields
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x = pyvips.Image.new_from_file(JPEG_FILE)
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x = x.copy()
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x.set_type(pyvips.GValue.gstr_type,
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"exif-ifd0-ImageDescription", "hello world")
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filename = temp_filename(self.tempdir, '.jpg')
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x.write_to_file(filename)
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x = pyvips.Image.new_from_file(filename)
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y = x.get("exif-ifd0-ImageDescription")
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# can't use == since the string will have an extra " (xx, yy, zz)"
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# format area at the end
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assert y.startswith("hello world")
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# can set, save and reload UTF16 string fields ... pyvips is
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# utf8, but it will be coded as utf16 and back for the XP* fields
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x = pyvips.Image.new_from_file(JPEG_FILE)
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x = x.copy()
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x.set_type(pyvips.GValue.gstr_type, "exif-ifd0-XPComment", u"йцук")
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filename = temp_filename(self.tempdir, '.jpg')
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x.write_to_file(filename)
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x = pyvips.Image.new_from_file(filename)
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y = x.get("exif-ifd0-XPComment")
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# can't use == since the string will have an extra " (xx, yy, zz)"
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# format area at the end
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assert y.startswith(u"йцук")
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# can set/save/load UserComment, a tag which has the
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# encoding in the first 8 bytes ... though libexif only supports
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# ASCII for this
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x = pyvips.Image.new_from_file(JPEG_FILE)
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x = x.copy()
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x.set_type(pyvips.GValue.gstr_type,
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"exif-ifd2-UserComment", "hello world")
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filename = temp_filename(self.tempdir, '.jpg')
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x.write_to_file(filename)
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x = pyvips.Image.new_from_file(filename)
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y = x.get("exif-ifd2-UserComment")
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# can't use == since the string will have an extra " (xx, yy, zz)"
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# format area at the end
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assert y.startswith("hello world")
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@skip_if_no("pngload")
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def test_png(self):
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def png_valid(im):
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a = im(10, 10)
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assert_almost_equal_objects(a, [38671.0, 33914.0, 26762.0])
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assert im.width == 290
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assert im.height == 442
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assert im.bands == 3
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self.file_loader("pngload", PNG_FILE, png_valid)
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self.buffer_loader("pngload_buffer", PNG_FILE, png_valid)
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self.save_load_buffer("pngsave_buffer", "pngload_buffer", self.colour)
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self.save_load("%s.png", self.mono)
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self.save_load("%s.png", self.colour)
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@skip_if_no("tiffload")
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def test_tiff(self):
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def tiff_valid(im):
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a = im(10, 10)
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assert_almost_equal_objects(a, [38671.0, 33914.0, 26762.0])
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assert im.width == 290
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assert im.height == 442
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assert im.bands == 3
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self.file_loader("tiffload", TIF_FILE, tiff_valid)
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self.buffer_loader("tiffload_buffer", TIF_FILE, tiff_valid)
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if pyvips.at_least_libvips(8, 5):
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self.save_load_buffer("tiffsave_buffer",
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"tiffload_buffer",
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self.colour)
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self.save_load("%s.tif", self.mono)
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self.save_load("%s.tif", self.colour)
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self.save_load("%s.tif", self.cmyk)
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self.save_load("%s.tif", self.onebit)
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self.save_load_file(".tif", "[squash]", self.onebit, 0)
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self.save_load_file(".tif", "[miniswhite]", self.onebit, 0)
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self.save_load_file(".tif", "[squash,miniswhite]", self.onebit, 0)
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self.save_load_file(".tif",
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"[profile={0}]".format(SRGB_FILE),
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self.colour, 0)
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self.save_load_file(".tif", "[tile]", self.colour, 0)
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self.save_load_file(".tif", "[tile,pyramid]", self.colour, 0)
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self.save_load_file(".tif",
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"[tile,pyramid,compression=jpeg]", self.colour, 80)
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self.save_load_file(".tif", "[bigtiff]", self.colour, 0)
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self.save_load_file(".tif", "[compression=jpeg]", self.colour, 80)
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self.save_load_file(".tif",
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"[tile,tile-width=256]", self.colour, 10)
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filename = temp_filename(self.tempdir, '.tif')
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x = pyvips.Image.new_from_file(TIF_FILE)
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x = x.copy()
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x.set("orientation", 2)
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x.write_to_file(filename)
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x = pyvips.Image.new_from_file(filename)
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y = x.get("orientation")
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assert y == 2
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filename = temp_filename(self.tempdir, '.tif')
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x = pyvips.Image.new_from_file(TIF_FILE)
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x = x.copy()
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x.set("orientation", 2)
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x.write_to_file(filename)
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x = pyvips.Image.new_from_file(filename)
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y = x.get("orientation")
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assert y == 2
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x.remove("orientation")
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filename = temp_filename(self.tempdir, '.tif')
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x.write_to_file(filename)
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x = pyvips.Image.new_from_file(filename)
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y = x.get("orientation")
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assert y == 1
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filename = temp_filename(self.tempdir, '.tif')
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x = pyvips.Image.new_from_file(TIF_FILE)
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x = x.copy()
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x.set("orientation", 6)
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x.write_to_file(filename)
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x1 = pyvips.Image.new_from_file(filename)
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x2 = pyvips.Image.new_from_file(filename, autorotate=True)
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assert x1.width == x2.height
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assert x1.height == x2.width
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# OME support in 8.5
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x = pyvips.Image.new_from_file(OME_FILE)
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assert x.width == 439
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assert x.height == 167
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page_height = x.height
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x = pyvips.Image.new_from_file(OME_FILE, n=-1)
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assert x.width == 439
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assert x.height == page_height * 15
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x = pyvips.Image.new_from_file(OME_FILE, page=1, n=-1)
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assert x.width == 439
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assert x.height == page_height * 14
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x = pyvips.Image.new_from_file(OME_FILE, page=1, n=2)
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assert x.width == 439
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assert x.height == page_height * 2
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x = pyvips.Image.new_from_file(OME_FILE, n=-1)
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assert x(0, 166)[0] == 96
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assert x(0, 167)[0] == 0
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assert x(0, 168)[0] == 1
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filename = temp_filename(self.tempdir, '.tif')
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x.write_to_file(filename)
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x = pyvips.Image.new_from_file(filename, n=-1)
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assert x.width == 439
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assert x.height == page_height * 15
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assert x(0, 166)[0] == 96
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assert x(0, 167)[0] == 0
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assert x(0, 168)[0] == 1
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# pyr save to buffer added in 8.6
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x = pyvips.Image.new_from_file(TIF_FILE)
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buf = x.tiffsave_buffer(tile=True, pyramid=True)
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filename = temp_filename(self.tempdir, '.tif')
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x.tiffsave(filename, tile=True, pyramid=True)
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with open(filename, 'rb') as f:
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buf2 = f.read()
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assert len(buf) == len(buf2)
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a = pyvips.Image.new_from_buffer(buf, "", page=2)
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b = pyvips.Image.new_from_buffer(buf2, "", page=2)
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assert a.width == b.width
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assert a.height == b.height
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assert a.avg() == b.avg()
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# region-shrink added in 8.7
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x = pyvips.Image.new_from_file(TIF_FILE)
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buf = x.tiffsave_buffer(tile=True, pyramid=True, region_shrink="mean")
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buf = x.tiffsave_buffer(tile=True, pyramid=True, region_shrink="mode")
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buf = x.tiffsave_buffer(tile=True, pyramid=True, region_shrink="median")
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@skip_if_no("magickload")
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def test_magickload(self):
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def bmp_valid(im):
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a = im(100, 100)
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assert_almost_equal_objects(a, [227, 216, 201])
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assert im.width == 1419
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assert im.height == 1001
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self.file_loader("magickload", BMP_FILE, bmp_valid)
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self.buffer_loader("magickload_buffer", BMP_FILE, bmp_valid)
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# we should have rgb or rgba for svg files ... different versions of
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# IM handle this differently
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im = pyvips.Image.magickload(SVG_FILE)
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assert im.bands == 3 or im.bands == 4
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# density should change size of generated svg
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im = pyvips.Image.magickload(SVG_FILE, density='100')
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width = im.width
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height = im.height
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im = pyvips.Image.magickload(SVG_FILE, density='200')
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# This seems to fail on travis, no idea why, some problem in their IM
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# perhaps
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# assert im.width == width * 2
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# assert im.height == height * 2
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# all-frames should load every frame of the animation
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# (though all-frames is deprecated)
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im = pyvips.Image.magickload(GIF_ANIM_FILE)
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width = im.width
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height = im.height
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im = pyvips.Image.magickload(GIF_ANIM_FILE, all_frames=True)
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assert im.width == width
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assert im.height == height * 5
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# page/n let you pick a range of pages
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# 'n' param added in 8.5
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if pyvips.at_least_libvips(8, 5):
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im = pyvips.Image.magickload(GIF_ANIM_FILE)
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width = im.width
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height = im.height
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im = pyvips.Image.magickload(GIF_ANIM_FILE, page=1, n=2)
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assert im.width == width
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assert im.height == height * 2
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page_height = im.get("page-height")
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assert page_height == height
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# should work for dicom
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im = pyvips.Image.magickload(DICOM_FILE)
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assert im.width == 128
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assert im.height == 128
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# some IMs are 3 bands, some are 1, can't really test
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# assert im.bands == 1
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# libvips has its own sniffer for ICO, test that
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with open(ICO_FILE, 'rb') as f:
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buf = f.read()
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im = pyvips.Image.new_from_buffer(buf, "")
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assert im.width == 16
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assert im.height == 16
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# added in 8.7
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@skip_if_no("magicksave")
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def test_magicksave(self):
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# save to a file and load again ... we can't use save_load_file since
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# we want to make sure we use magickload/save
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# don't use BMP - GraphicsMagick always adds an alpha
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# don't use TIF - IM7 will save as 16-bit
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filename = temp_filename(self.tempdir, ".jpg")
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self.colour.magicksave(filename)
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x = pyvips.Image.magickload(filename)
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assert self.colour.width == x.width
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assert self.colour.height == x.height
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assert self.colour.bands == x.bands
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max_diff = (self.colour - x).abs().max()
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assert max_diff < 20
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self.save_load_buffer("magicksave_buffer", "magickload_buffer",
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self.colour, 20, format="JPG")
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@skip_if_no("webpload")
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def test_webp(self):
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def webp_valid(im):
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a = im(10, 10)
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assert_almost_equal_objects(a, [71, 166, 236])
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assert im.width == 550
|
|
assert im.height == 368
|
|
assert im.bands == 3
|
|
|
|
self.file_loader("webpload", WEBP_FILE, webp_valid)
|
|
self.buffer_loader("webpload_buffer", WEBP_FILE, webp_valid)
|
|
self.save_load_buffer("webpsave_buffer", "webpload_buffer",
|
|
self.colour, 60)
|
|
self.save_load("%s.webp", self.colour)
|
|
|
|
# test lossless mode
|
|
im = pyvips.Image.new_from_file(WEBP_FILE)
|
|
buf = im.webpsave_buffer(lossless=True)
|
|
im2 = pyvips.Image.new_from_buffer(buf, "")
|
|
assert im.avg() == im2.avg()
|
|
|
|
# higher Q should mean a bigger buffer
|
|
b1 = im.webpsave_buffer(Q=10)
|
|
b2 = im.webpsave_buffer(Q=90)
|
|
assert len(b2) > len(b1)
|
|
|
|
# try saving an image with an ICC profile and reading it back ... if we
|
|
# can do it, our webp supports metadata load/save
|
|
buf = self.colour.webpsave_buffer()
|
|
im = pyvips.Image.new_from_buffer(buf, "")
|
|
if im.get_typeof("icc-profile-data") != 0:
|
|
# verify that the profile comes back unharmed
|
|
p1 = self.colour.get("icc-profile-data")
|
|
p2 = im.get("icc-profile-data")
|
|
assert p1 == p2
|
|
|
|
# add tests for exif, xmp, ipct
|
|
# the exif test will need us to be able to walk the header,
|
|
# we can't just check exif-data
|
|
|
|
# we can test that exif changes change the output of webpsave
|
|
# first make sure we have exif support
|
|
z = pyvips.Image.new_from_file(JPEG_FILE)
|
|
if z.get_typeof("exif-ifd0-Orientation") != 0:
|
|
x = self.colour.copy()
|
|
x.set("orientation", 6)
|
|
buf = x.webpsave_buffer()
|
|
y = pyvips.Image.new_from_buffer(buf, "")
|
|
assert y.get("orientation") == 6
|
|
|
|
# try converting an animated gif to webp ... can't do back to gif
|
|
# again without IM support
|
|
if have("gifload"):
|
|
x1 = pyvips.Image.new_from_file(GIF_ANIM_FILE, n=-1)
|
|
w1 = x1.webpsave_buffer(Q=10)
|
|
x2 = pyvips.Image.new_from_buffer(w1, "", n=-1)
|
|
assert x1.width == x2.width
|
|
assert x1.height == x2.height
|
|
assert x1.get("gif-delay") == x2.get("gif-delay")
|
|
assert x1.get("page-height") == x2.get("page-height")
|
|
assert x1.get("gif-loop") == x2.get("gif-loop")
|
|
|
|
@skip_if_no("analyzeload")
|
|
def test_analyzeload(self):
|
|
def analyze_valid(im):
|
|
a = im(10, 10)
|
|
assert pytest.approx(a[0]) == 3335
|
|
assert im.width == 128
|
|
assert im.height == 8064
|
|
assert im.bands == 1
|
|
|
|
self.file_loader("analyzeload", ANALYZE_FILE, analyze_valid)
|
|
|
|
@skip_if_no("matload")
|
|
def test_matload(self):
|
|
def matlab_valid(im):
|
|
a = im(10, 10)
|
|
assert_almost_equal_objects(a, [38671.0, 33914.0, 26762.0])
|
|
assert im.width == 290
|
|
assert im.height == 442
|
|
assert im.bands == 3
|
|
|
|
self.file_loader("matload", MATLAB_FILE, matlab_valid)
|
|
|
|
@skip_if_no("openexrload")
|
|
def test_openexrload(self):
|
|
def exr_valid(im):
|
|
a = im(10, 10)
|
|
assert_almost_equal_objects(a, [0.124512, 0.159668, 0.040375,
|
|
255.0],
|
|
threshold=0.00001)
|
|
assert im.width == 610
|
|
assert im.height == 406
|
|
assert im.bands == 4
|
|
|
|
self.file_loader("openexrload", EXR_FILE, exr_valid)
|
|
|
|
@skip_if_no("fitsload")
|
|
def test_fitsload(self):
|
|
def fits_valid(im):
|
|
a = im(10, 10)
|
|
assert_almost_equal_objects(a, [-0.165013, -0.148553, 1.09122,
|
|
-0.942242], threshold=0.00001)
|
|
assert im.width == 200
|
|
assert im.height == 200
|
|
assert im.bands == 4
|
|
|
|
self.file_loader("fitsload", FITS_FILE, fits_valid)
|
|
self.save_load("%s.fits", self.mono)
|
|
|
|
@skip_if_no("niftiload")
|
|
def test_niftiload(self):
|
|
def nifti_valid(im):
|
|
a = im(30, 26)
|
|
assert_almost_equal_objects(a, [131])
|
|
assert im.width == 91
|
|
assert im.height == 9919
|
|
assert im.bands == 1
|
|
|
|
print("NIFTI_FILE =", NIFTI_FILE)
|
|
im = pyvips.Operation.call("niftiload", NIFTI_FILE)
|
|
print("width = ", im.width)
|
|
|
|
im = pyvips.Operation.call("niftiload", "test/images/avg152T1_LR_nifti.nii.gz")
|
|
print("width = ", im.width)
|
|
|
|
self.file_loader("niftiload", NIFTI_FILE, nifti_valid)
|
|
self.save_load("%s.nii.gz", self.mono)
|
|
|
|
@skip_if_no("openslideload")
|
|
def test_openslideload(self):
|
|
def openslide_valid(im):
|
|
a = im(10, 10)
|
|
assert_almost_equal_objects(a, [244, 250, 243, 255])
|
|
assert im.width == 2220
|
|
assert im.height == 2967
|
|
assert im.bands == 4
|
|
|
|
self.file_loader("openslideload", OPENSLIDE_FILE, openslide_valid)
|
|
|
|
@skip_if_no("pdfload")
|
|
def test_pdfload(self):
|
|
def pdf_valid(im):
|
|
a = im(10, 10)
|
|
assert_almost_equal_objects(a, [35, 31, 32, 255])
|
|
assert im.width == 1133
|
|
assert im.height == 680
|
|
assert im.bands == 4
|
|
|
|
self.file_loader("pdfload", PDF_FILE, pdf_valid)
|
|
self.buffer_loader("pdfload_buffer", PDF_FILE, pdf_valid)
|
|
|
|
im = pyvips.Image.new_from_file(PDF_FILE)
|
|
x = pyvips.Image.new_from_file(PDF_FILE, scale=2)
|
|
assert abs(im.width * 2 - x.width) < 2
|
|
assert abs(im.height * 2 - x.height) < 2
|
|
|
|
im = pyvips.Image.new_from_file(PDF_FILE)
|
|
x = pyvips.Image.new_from_file(PDF_FILE, dpi=144)
|
|
assert abs(im.width * 2 - x.width) < 2
|
|
assert abs(im.height * 2 - x.height) < 2
|
|
|
|
@skip_if_no("gifload")
|
|
def test_gifload(self):
|
|
def gif_valid(im):
|
|
a = im(10, 10)
|
|
assert_almost_equal_objects(a, [33])
|
|
assert im.width == 159
|
|
assert im.height == 203
|
|
assert im.bands == 1
|
|
|
|
self.file_loader("gifload", GIF_FILE, gif_valid)
|
|
self.buffer_loader("gifload_buffer", GIF_FILE, gif_valid)
|
|
|
|
# 'n' param added in 8.5
|
|
if pyvips.at_least_libvips(8, 5):
|
|
x1 = pyvips.Image.new_from_file(GIF_ANIM_FILE)
|
|
x2 = pyvips.Image.new_from_file(GIF_ANIM_FILE, n=2)
|
|
assert x2.height == 2 * x1.height
|
|
page_height = x2.get("page-height")
|
|
assert page_height == x1.height
|
|
|
|
x2 = pyvips.Image.new_from_file(GIF_ANIM_FILE, n=-1)
|
|
assert x2.height == 5 * x1.height
|
|
|
|
x2 = pyvips.Image.new_from_file(GIF_ANIM_FILE, page=1, n=-1)
|
|
assert x2.height == 4 * x1.height
|
|
|
|
@skip_if_no("svgload")
|
|
def test_svgload(self):
|
|
def svg_valid(im):
|
|
a = im(10, 10)
|
|
|
|
# some old rsvg versions are way, way off
|
|
assert abs(a[0] - 79) < 2
|
|
assert abs(a[1] - 79) < 2
|
|
assert abs(a[2] - 132) < 2
|
|
assert abs(a[3] - 255) < 2
|
|
|
|
assert im.width == 288
|
|
assert im.height == 470
|
|
assert im.bands == 4
|
|
|
|
self.file_loader("svgload", SVG_FILE, svg_valid)
|
|
self.buffer_loader("svgload_buffer", SVG_FILE, svg_valid)
|
|
|
|
self.file_loader("svgload", SVGZ_FILE, svg_valid)
|
|
self.buffer_loader("svgload_buffer", SVGZ_FILE, svg_valid)
|
|
|
|
self.file_loader("svgload", SVG_GZ_FILE, svg_valid)
|
|
|
|
im = pyvips.Image.new_from_file(SVG_FILE)
|
|
x = pyvips.Image.new_from_file(SVG_FILE, scale=2)
|
|
assert abs(im.width * 2 - x.width) < 2
|
|
assert abs(im.height * 2 - x.height) < 2
|
|
|
|
im = pyvips.Image.new_from_file(SVG_FILE)
|
|
x = pyvips.Image.new_from_file(SVG_FILE, dpi=144)
|
|
assert abs(im.width * 2 - x.width) < 2
|
|
assert abs(im.height * 2 - x.height) < 2
|
|
|
|
def test_csv(self):
|
|
self.save_load("%s.csv", self.mono)
|
|
|
|
def test_matrix(self):
|
|
self.save_load("%s.mat", self.mono)
|
|
|
|
@skip_if_no("ppmload")
|
|
def test_ppm(self):
|
|
self.save_load("%s.ppm", self.mono)
|
|
self.save_load("%s.ppm", self.colour)
|
|
|
|
@skip_if_no("radload")
|
|
def test_rad(self):
|
|
self.save_load("%s.hdr", self.colour)
|
|
self.save_buffer_tempfile("radsave_buffer", ".hdr",
|
|
self.rad, max_diff=0)
|
|
|
|
@skip_if_no("dzsave")
|
|
def test_dzsave(self):
|
|
# dzsave is hard to test, there are so many options
|
|
# test each option separately and hope they all function together
|
|
# correctly
|
|
|
|
# default deepzoom layout ... we must use png here, since we want to
|
|
# test the overlap for equality
|
|
filename = temp_filename(self.tempdir, '')
|
|
self.colour.dzsave(filename, suffix=".png")
|
|
|
|
# test horizontal overlap ... expect 256 step, overlap 1
|
|
x = pyvips.Image.new_from_file(filename + "_files/10/0_0.png")
|
|
assert x.width == 255
|
|
y = pyvips.Image.new_from_file(filename + "_files/10/1_0.png")
|
|
assert y.width == 256
|
|
|
|
# the right two columns of x should equal the left two columns of y
|
|
left = x.crop(x.width - 2, 0, 2, x.height)
|
|
right = y.crop(0, 0, 2, y.height)
|
|
assert (left - right).abs().max() == 0
|
|
|
|
# test vertical overlap
|
|
assert x.height == 255
|
|
y = pyvips.Image.new_from_file(filename + "_files/10/0_1.png")
|
|
assert y.height == 256
|
|
|
|
# the bottom two rows of x should equal the top two rows of y
|
|
top = x.crop(0, x.height - 2, x.width, 2)
|
|
bottom = y.crop(0, 0, y.width, 2)
|
|
assert (top - bottom).abs().max() == 0
|
|
|
|
# there should be a bottom layer
|
|
x = pyvips.Image.new_from_file(filename + "_files/0/0_0.png")
|
|
assert x.width == 1
|
|
assert x.height == 1
|
|
|
|
# 10 should be the final layer
|
|
assert not os.path.isdir(filename + "_files/11")
|
|
|
|
# default google layout
|
|
filename = temp_filename(self.tempdir, '')
|
|
self.colour.dzsave(filename, layout="google")
|
|
|
|
# test bottom-right tile ... default is 256x256 tiles, overlap 0
|
|
x = pyvips.Image.new_from_file(filename + "/2/2/3.jpg")
|
|
assert x.width == 256
|
|
assert x.height == 256
|
|
assert not os.path.exists(filename + "/2/2/4.jpg")
|
|
assert not os.path.exists(filename + "/3")
|
|
x = pyvips.Image.new_from_file(filename + "/blank.png")
|
|
assert x.width == 256
|
|
assert x.height == 256
|
|
|
|
# google layout with overlap ... verify that we clip correctly
|
|
|
|
# overlap 1, 510x510 pixels, 256 pixel tiles, should be exactly 2x2
|
|
# tiles, though in fact the bottom and right edges will be white
|
|
filename = temp_filename(self.tempdir, '')
|
|
self.colour.crop(0, 0, 510, 510).dzsave(filename, layout="google",
|
|
overlap=1, depth="one")
|
|
|
|
x = pyvips.Image.new_from_file(filename + "/0/1/1.jpg")
|
|
assert x.width == 256
|
|
assert x.height == 256
|
|
assert not os.path.exists(filename + "/0/2/2.jpg")
|
|
|
|
# with 511x511, it'll fit exactly into 2x2 -- we we actually generate
|
|
# 3x3, since we output the overlaps
|
|
filename = temp_filename(self.tempdir, '')
|
|
self.colour.crop(0, 0, 511, 511).dzsave(filename, layout="google",
|
|
overlap=1, depth="one")
|
|
|
|
x = pyvips.Image.new_from_file(filename + "/0/2/2.jpg")
|
|
assert x.width == 256
|
|
assert x.height == 256
|
|
assert not os.path.exists(filename + "/0/3/3.jpg")
|
|
|
|
# default zoomify layout
|
|
filename = temp_filename(self.tempdir, '')
|
|
self.colour.dzsave(filename, layout="zoomify")
|
|
|
|
# 256x256 tiles, no overlap
|
|
assert os.path.exists(filename + "/ImageProperties.xml")
|
|
x = pyvips.Image.new_from_file(filename + "/TileGroup0/2-3-2.jpg")
|
|
assert x.width == 256
|
|
assert x.height == 256
|
|
|
|
# test zip output
|
|
filename = temp_filename(self.tempdir, '.zip')
|
|
self.colour.dzsave(filename)
|
|
assert os.path.exists(filename)
|
|
assert not os.path.exists(filename + "_files")
|
|
assert not os.path.exists(filename + ".dzi")
|
|
|
|
# test compressed zip output
|
|
filename2 = temp_filename(self.tempdir, '.zip')
|
|
self.colour.dzsave(filename2, compression=-1)
|
|
assert os.path.exists(filename2)
|
|
assert os.path.getsize(filename2) < os.path.getsize(filename)
|
|
|
|
# test suffix
|
|
filename = temp_filename(self.tempdir, '')
|
|
self.colour.dzsave(filename, suffix=".png")
|
|
|
|
x = pyvips.Image.new_from_file(filename + "_files/10/0_0.png")
|
|
assert x.width == 255
|
|
|
|
# test overlap
|
|
filename = temp_filename(self.tempdir, '')
|
|
self.colour.dzsave(filename, overlap=200)
|
|
|
|
y = pyvips.Image.new_from_file(filename + "_files/10/1_1.jpeg")
|
|
assert y.width == 654
|
|
|
|
# test tile-size
|
|
filename = temp_filename(self.tempdir, '')
|
|
self.colour.dzsave(filename, tile_size=512)
|
|
|
|
y = pyvips.Image.new_from_file(filename + "_files/10/0_0.jpeg")
|
|
assert y.width == 513
|
|
assert y.height == 513
|
|
|
|
# test save to memory buffer
|
|
filename = temp_filename(self.tempdir, '.zip')
|
|
base = os.path.basename(filename)
|
|
root, ext = os.path.splitext(base)
|
|
|
|
self.colour.dzsave(filename)
|
|
with open(filename, 'rb') as f:
|
|
buf1 = f.read()
|
|
buf2 = self.colour.dzsave_buffer(basename=root)
|
|
assert len(buf1) == len(buf2)
|
|
|
|
# we can't test the bytes are exactly equal -- the timestamps will
|
|
# be different
|
|
|
|
# added in 8.7
|
|
buf = self.colour.dzsave_buffer(region_shrink="mean")
|
|
buf = self.colour.dzsave_buffer(region_shrink="mode")
|
|
buf = self.colour.dzsave_buffer(region_shrink="median")
|
|
|
|
if __name__ == '__main__':
|
|
pytest.main()
|