1198 lines
44 KiB
Python
1198 lines
44 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, AVIF_FILE, TRUNCATED_FILE, \
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GIF_ANIM_EXPECTED_PNG_FILE, GIF_ANIM_DISPOSE_BACKGROUND_FILE, \
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GIF_ANIM_DISPOSE_BACKGROUND_EXPECTED_PNG_FILE, \
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GIF_ANIM_DISPOSE_PREVIOUS_FILE, \
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GIF_ANIM_DISPOSE_PREVIOUS_EXPECTED_PNG_FILE, \
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temp_filename, assert_almost_equal_objects, have, skip_if_no, \
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TIF1_FILE, TIF2_FILE, TIF4_FILE, WEBP_LOOKS_LIKE_SVG_FILE, \
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WEBP_ANIMATED_FILE, JP2K_FILE, RGBA_FILE
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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.rgba = pyvips.Image.new_from_file(RGBA_FILE)
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cls.mono = cls.colour.extract_band(1).copy()
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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().copy()
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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[1] > 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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cls.colour = None
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cls.rgba = None
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cls.mono = None
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cls.rad = None
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cls.cmyk = None
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cls.onebit = None
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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, max_diff=0):
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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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assert (im - x).abs().max() <= max_diff
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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)
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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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# https://github.com/libvips/libvips/issues/1847
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filename = temp_filename(self.tempdir, ".v")
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x = pyvips.Image.black(16, 16) + 128
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x.write_to_file(filename)
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x = pyvips.Image.new_from_file(filename)
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assert x.width == 16
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assert x.height == 16
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assert x.bands == 1
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assert x.avg() == 128
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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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# different versions of libjpeg decode have slightly different
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# rounding
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assert_almost_equal_objects(a, [141, 127, 90], threshold=3)
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profile = im.get("icc-profile-data")
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assert len(profile) == 564
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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("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 = x.copy()
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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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# sets incorrect orientation, save, load again, orientation
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# has reset to 1
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x = x.copy()
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x.set("orientation", 256)
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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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# 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("jpegload")
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def test_jpegsave(self):
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im = pyvips.Image.new_from_file(JPEG_FILE)
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q10 = im.jpegsave_buffer(Q=10)
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q10_subsample_auto = im.jpegsave_buffer(Q=10, subsample_mode="auto")
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q10_subsample_on = im.jpegsave_buffer(Q=10, subsample_mode="on")
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q10_subsample_off = im.jpegsave_buffer(Q=10, subsample_mode="off")
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q90 = im.jpegsave_buffer(Q=90)
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q90_subsample_auto = im.jpegsave_buffer(Q=90, subsample_mode="auto")
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q90_subsample_on = im.jpegsave_buffer(Q=90, subsample_mode="on")
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q90_subsample_off = im.jpegsave_buffer(Q=90, subsample_mode="off")
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# higher Q should mean a bigger buffer
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assert len(q90) > len(q10)
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assert len(q10_subsample_auto) == len(q10)
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assert len(q10_subsample_on) == len(q10_subsample_auto)
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assert len(q10_subsample_off) > len(q10)
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assert len(q90_subsample_auto) == len(q90)
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assert len(q90_subsample_on) < len(q90)
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assert len(q90_subsample_off) == len(q90_subsample_auto)
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@skip_if_no("jpegload")
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def test_truncated(self):
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# This should open (there's enough there for the header)
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im = pyvips.Image.new_from_file(TRUNCATED_FILE)
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# but this should fail with a warning, and knock TRUNCATED_FILE out of
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# the cache
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x = im.avg()
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# now we should open again, but it won't come from cache, it'll reload
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im = pyvips.Image.new_from_file(TRUNCATED_FILE)
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# and this should fail with a warning once more
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x = im.avg()
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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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self.save_load_file(".png", "[interlace]", self.colour)
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self.save_load_file(".png", "[interlace]", self.mono)
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# size of a regular mono PNG
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len_mono = len(self.mono.write_to_buffer(".png"))
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# 4-bit should be smaller
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len_mono4 = len(self.mono.write_to_buffer(".png", bitdepth=4))
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assert( len_mono4 < len_mono )
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len_mono2 = len(self.mono.write_to_buffer(".png", bitdepth=2))
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assert( len_mono2 < len_mono4 )
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len_mono1 = len(self.mono.write_to_buffer(".png", bitdepth=1))
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assert( len_mono1 < len_mono2 )
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# we can't test palette save since we can't be sure libimagequant is
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# available and there's no easy test for its presence
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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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def tiff1_valid(im):
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a = im(127, 0)
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assert_almost_equal_objects(a, [0.0])
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a = im(128, 0)
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assert_almost_equal_objects(a, [255.0])
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assert im.width == 256
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assert im.height == 4
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assert im.bands == 1
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self.file_loader("tiffload", TIF1_FILE, tiff1_valid)
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def tiff2_valid(im):
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a = im(127, 0)
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assert_almost_equal_objects(a, [85.0])
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a = im(128, 0)
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assert_almost_equal_objects(a, [170.0])
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assert im.width == 256
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assert im.height == 4
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assert im.bands == 1
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self.file_loader("tiffload", TIF2_FILE, tiff2_valid)
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def tiff4_valid(im):
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a = im(127, 0)
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assert_almost_equal_objects(a, [119.0])
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a = im(128, 0)
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assert_almost_equal_objects(a, [136.0])
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assert im.width == 256
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assert im.height == 4
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assert im.bands == 1
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self.file_loader("tiffload", TIF4_FILE, tiff4_valid)
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self.save_load_buffer("tiffsave_buffer", "tiffload_buffer", 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.rgba)
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self.save_load("%s.tif", self.onebit)
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self.save_load_file(".tif", "[bitdepth=1]", self.onebit)
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self.save_load_file(".tif", "[miniswhite]", self.onebit)
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self.save_load_file(".tif", "[bitdepth=1,miniswhite]", self.onebit)
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self.save_load_file(".tif", f"[profile={SRGB_FILE}]", self.colour)
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self.save_load_file(".tif", "[tile]", self.colour)
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self.save_load_file(".tif", "[tile,pyramid]", self.colour)
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self.save_load_file(".tif", "[tile,pyramid,subifd]", self.colour)
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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",
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"[tile,pyramid,subifd,compression=jpeg]",
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self.colour, 80)
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self.save_load_file(".tif", "[bigtiff]", self.colour)
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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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im = pyvips.Image.new_from_file(TIF2_FILE)
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self.save_load_file(".tif", "[bitdepth=2]", im)
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im = pyvips.Image.new_from_file(TIF4_FILE)
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self.save_load_file(".tif", "[bitdepth=4]", im)
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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 = x.copy()
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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
|
|
|
|
filename = temp_filename(self.tempdir, '.tif')
|
|
x = pyvips.Image.new_from_file(TIF_FILE)
|
|
x = x.copy()
|
|
x.write_to_file(filename, xres=100, yres=200, resunit="cm")
|
|
x1 = pyvips.Image.new_from_file(filename)
|
|
assert x1.get("resolution-unit") == "cm"
|
|
assert x1.xres == 100
|
|
assert x1.yres == 200
|
|
|
|
filename = temp_filename(self.tempdir, '.tif')
|
|
x = pyvips.Image.new_from_file(TIF_FILE)
|
|
x = x.copy()
|
|
x.write_to_file(filename, xres=100, yres=200, resunit="inch")
|
|
x1 = pyvips.Image.new_from_file(filename)
|
|
assert x1.get("resolution-unit") == "in"
|
|
assert x1.xres == 100
|
|
assert x1.yres == 200
|
|
|
|
# OME support in 8.5
|
|
x = pyvips.Image.new_from_file(OME_FILE)
|
|
assert x.width == 439
|
|
assert x.height == 167
|
|
page_height = x.height
|
|
|
|
x = pyvips.Image.new_from_file(OME_FILE, n=-1)
|
|
assert x.width == 439
|
|
assert x.height == page_height * 15
|
|
|
|
x = pyvips.Image.new_from_file(OME_FILE, page=1, n=-1)
|
|
assert x.width == 439
|
|
assert x.height == page_height * 14
|
|
|
|
x = pyvips.Image.new_from_file(OME_FILE, page=1, n=2)
|
|
assert x.width == 439
|
|
assert x.height == page_height * 2
|
|
|
|
x = pyvips.Image.new_from_file(OME_FILE, n=-1)
|
|
assert x(0, 166)[0] == 96
|
|
assert x(0, 167)[0] == 0
|
|
assert x(0, 168)[0] == 1
|
|
|
|
filename = temp_filename(self.tempdir, '.tif')
|
|
x.write_to_file(filename)
|
|
|
|
x = pyvips.Image.new_from_file(filename, n=-1)
|
|
assert x.width == 439
|
|
assert x.height == page_height * 15
|
|
assert x(0, 166)[0] == 96
|
|
assert x(0, 167)[0] == 0
|
|
assert x(0, 168)[0] == 1
|
|
|
|
# pyr save to buffer added in 8.6
|
|
x = pyvips.Image.new_from_file(TIF_FILE)
|
|
buf = x.tiffsave_buffer(tile=True, pyramid=True)
|
|
filename = temp_filename(self.tempdir, '.tif')
|
|
x.tiffsave(filename, tile=True, pyramid=True)
|
|
with open(filename, 'rb') as f:
|
|
buf2 = f.read()
|
|
assert len(buf) == len(buf2)
|
|
|
|
filename = temp_filename(self.tempdir, '.tif')
|
|
self.rgba.write_to_file(filename, premultiply=True)
|
|
a = pyvips.Image.new_from_file(filename)
|
|
b = self.rgba.premultiply().cast("uchar").unpremultiply().cast("uchar")
|
|
assert (a == b).min() == 255
|
|
|
|
a = pyvips.Image.new_from_buffer(buf, "", page=2)
|
|
b = pyvips.Image.new_from_buffer(buf2, "", page=2)
|
|
assert a.width == b.width
|
|
assert a.height == b.height
|
|
assert (a == b).min() == 255
|
|
|
|
# just 0/255 in each band, shrink with mode and all pixels should be 0
|
|
# or 255 in layer 1
|
|
x = pyvips.Image.new_from_file(TIF_FILE) > 128
|
|
for shrink in ["mode", "median", "max", "min"]:
|
|
buf = x.tiffsave_buffer(pyramid=True, region_shrink=shrink)
|
|
y = pyvips.Image.new_from_buffer(buf, "", page=1)
|
|
z = y.hist_find(band=0)
|
|
assert z(0, 0)[0] + z(255, 0)[0] == y.width * y.height
|
|
|
|
@skip_if_no("jp2kload")
|
|
@skip_if_no("tiffload")
|
|
def test_tiffjp2k(self):
|
|
self.save_load_file(".tif", "[tile,compression=jp2k]", self.colour, 80)
|
|
self.save_load_file(".tif",
|
|
"[tile,pyramid,compression=jp2k]", self.colour, 80)
|
|
self.save_load_file(".tif",
|
|
"[tile,pyramid,subifd,compression=jp2k]",
|
|
self.colour, 80)
|
|
|
|
@skip_if_no("magickload")
|
|
def test_magickload(self):
|
|
def bmp_valid(im):
|
|
a = im(100, 100)
|
|
|
|
assert_almost_equal_objects(a, [227, 216, 201])
|
|
assert im.width == 1419
|
|
assert im.height == 1001
|
|
|
|
self.file_loader("magickload", BMP_FILE, bmp_valid)
|
|
self.buffer_loader("magickload_buffer", BMP_FILE, bmp_valid)
|
|
|
|
# we should have rgb or rgba for svg files ... different versions of
|
|
# IM handle this differently. GM even gives 1 band.
|
|
im = pyvips.Image.magickload(SVG_FILE)
|
|
assert im.bands == 3 or im.bands == 4 or im.bands == 1
|
|
|
|
# density should change size of generated svg
|
|
im = pyvips.Image.magickload(SVG_FILE, density='100')
|
|
width = im.width
|
|
height = im.height
|
|
im = pyvips.Image.magickload(SVG_FILE, density='200')
|
|
# This seems to fail on travis, no idea why, some problem in their IM
|
|
# perhaps
|
|
# assert im.width == width * 2
|
|
# assert im.height == height * 2
|
|
|
|
im = pyvips.Image.magickload(GIF_ANIM_FILE)
|
|
width = im.width
|
|
height = im.height
|
|
im = pyvips.Image.magickload(GIF_ANIM_FILE, n=-1)
|
|
assert im.width == width
|
|
assert im.height == height * 5
|
|
|
|
# page/n let you pick a range of pages
|
|
# 'n' param added in 8.5
|
|
if pyvips.at_least_libvips(8, 5):
|
|
im = pyvips.Image.magickload(GIF_ANIM_FILE)
|
|
width = im.width
|
|
height = im.height
|
|
im = pyvips.Image.magickload(GIF_ANIM_FILE, page=1, n=2)
|
|
assert im.width == width
|
|
assert im.height == height * 2
|
|
page_height = im.get("page-height")
|
|
assert page_height == height
|
|
|
|
# should work for dicom
|
|
im = pyvips.Image.magickload(DICOM_FILE)
|
|
assert im.width == 128
|
|
assert im.height == 128
|
|
# some IMs are 3 bands, some are 1, can't really test
|
|
# assert im.bands == 1
|
|
|
|
# libvips has its own sniffer for ICO, test that
|
|
with open(ICO_FILE, 'rb') as f:
|
|
buf = f.read()
|
|
|
|
im = pyvips.Image.new_from_buffer(buf, "")
|
|
assert im.width == 16
|
|
assert im.height == 16
|
|
|
|
# load should see metadata like eg. icc profiles
|
|
im = pyvips.Image.magickload(JPEG_FILE)
|
|
assert len(im.get("icc-profile-data")) == 564
|
|
|
|
# added in 8.7
|
|
@skip_if_no("magicksave")
|
|
def test_magicksave(self):
|
|
# save to a file and load again ... we can't use save_load_file since
|
|
# we want to make sure we use magickload/save
|
|
# don't use BMP - GraphicsMagick always adds an alpha
|
|
# don't use TIF - IM7 will save as 16-bit
|
|
filename = temp_filename(self.tempdir, ".jpg")
|
|
|
|
self.colour.magicksave(filename)
|
|
x = pyvips.Image.magickload(filename)
|
|
|
|
assert self.colour.width == x.width
|
|
assert self.colour.height == x.height
|
|
assert self.colour.bands == x.bands
|
|
max_diff = (self.colour - x).abs().max()
|
|
assert max_diff < 60
|
|
assert len(x.get("icc-profile-data")) == 564
|
|
|
|
self.save_load_buffer("magicksave_buffer", "magickload_buffer",
|
|
self.colour, 60, format="JPG")
|
|
|
|
# try an animation
|
|
if have("gifload"):
|
|
x1 = pyvips.Image.new_from_file(GIF_ANIM_FILE, n=-1)
|
|
w1 = x1.magicksave_buffer(format="GIF")
|
|
x2 = pyvips.Image.new_from_buffer(w1, "", n=-1)
|
|
assert x1.get("delay") == x2.get("delay")
|
|
assert x1.get("page-height") == x2.get("page-height")
|
|
# magicks vary in how they handle this ... just pray we are close
|
|
assert abs(x1.get("gif-loop") - x2.get("gif-loop")) < 5
|
|
|
|
@skip_if_no("webpload")
|
|
def test_webp(self):
|
|
def webp_valid(im):
|
|
a = im(10, 10)
|
|
# different webp versions use different rounding systems leading
|
|
# to small variations
|
|
assert_almost_equal_objects(a, [71, 166, 236], threshold=2)
|
|
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 abs(im.avg() - im2.avg()) < 1
|
|
|
|
# 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)
|
|
|
|
# our test gif has delay 0 for the first frame set in error,
|
|
# when converting to WebP this should result in a 100ms delay.
|
|
expected_delay = [100 if d <= 10 else d for d in x1.get("delay")]
|
|
|
|
x2 = pyvips.Image.new_from_buffer(w1, "", n=-1)
|
|
assert x1.width == x2.width
|
|
assert x1.height == x2.height
|
|
assert expected_delay == x2.get("delay")
|
|
assert x1.get("page-height") == x2.get("page-height")
|
|
assert x1.get("gif-loop") == x2.get("gif-loop")
|
|
|
|
# WebP image that happens to contain the string "<svg"
|
|
if have("svgload"):
|
|
x = pyvips.Image.new_from_file(WEBP_LOOKS_LIKE_SVG_FILE)
|
|
assert x.get("vips-loader") == "webpload"
|
|
|
|
# Animated WebP roundtrip
|
|
x = pyvips.Image.new_from_file(WEBP_ANIMATED_FILE, n=-1)
|
|
assert x.width == 13
|
|
assert x.height == 16393
|
|
buf = x.webpsave_buffer()
|
|
|
|
@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
|
|
|
|
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)
|
|
|
|
source = pyvips.Source.new_from_file(OPENSLIDE_FILE)
|
|
x = pyvips.Image.new_from_source(source, "")
|
|
openslide_valid(x)
|
|
|
|
@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 == 1134
|
|
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, 33, 33, 255])
|
|
assert im.width == 159
|
|
assert im.height == 203
|
|
assert im.bands == 4
|
|
|
|
self.file_loader("gifload", GIF_FILE, gif_valid)
|
|
self.buffer_loader("gifload_buffer", GIF_FILE, gif_valid)
|
|
|
|
# test metadata
|
|
x2 = pyvips.Image.new_from_file(GIF_ANIM_FILE, n=-1)
|
|
# our test gif has delay 0 for the first frame set in error
|
|
assert x2.get("delay") == [0, 50, 50, 50, 50]
|
|
assert x2.get("loop") == 32760
|
|
assert x2.get("background") == [255, 255, 255]
|
|
# test deprecated fields too
|
|
assert x2.get("gif-loop") == 32759
|
|
assert x2.get("gif-delay") == 0
|
|
|
|
# test every pixel
|
|
x1 = pyvips.Image.new_from_file(GIF_ANIM_FILE, n=-1)
|
|
x2 = pyvips.Image.new_from_file(GIF_ANIM_EXPECTED_PNG_FILE)
|
|
assert (x1 - x2).abs().max() == 0
|
|
|
|
# test page handling
|
|
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("gifload")
|
|
def test_gifload_animation_dispose_background(self):
|
|
x1 = pyvips.Image.new_from_file(GIF_ANIM_DISPOSE_BACKGROUND_FILE, n=-1)
|
|
x2 = pyvips.Image.new_from_file(GIF_ANIM_DISPOSE_BACKGROUND_EXPECTED_PNG_FILE)
|
|
assert (x1 - x2).abs().max() == 0
|
|
|
|
@skip_if_no("gifload")
|
|
def test_gifload_animation_dispose_previous(self):
|
|
x1 = pyvips.Image.new_from_file(GIF_ANIM_DISPOSE_PREVIOUS_FILE, n=-1)
|
|
x2 = pyvips.Image.new_from_file(GIF_ANIM_DISPOSE_PREVIOUS_EXPECTED_PNG_FILE)
|
|
assert (x1 - x2).abs().max() == 0
|
|
|
|
@skip_if_no("svgload")
|
|
def test_svgload(self):
|
|
def svg_valid(im):
|
|
a = im(10, 10)
|
|
assert_almost_equal_objects(a, [0, 0, 0, 0])
|
|
assert im.width == 736
|
|
assert im.height == 552
|
|
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)
|
|
|
|
self.save_load_file("%s.ppm", "[ascii]", self.mono, 0)
|
|
self.save_load_file("%s.ppm", "[ascii]", self.colour, 0)
|
|
|
|
self.save_load_file("%s.ppm", "[ascii,bitdepth=1]", self.onebit, 0)
|
|
|
|
rgb16 = self.colour.colourspace("rgb16")
|
|
grey16 = self.mono.colourspace("rgb16")
|
|
|
|
self.save_load("%s.ppm", grey16)
|
|
self.save_load("%s.ppm", rgb16)
|
|
|
|
self.save_load_file("%s.ppm", "[ascii]", grey16, 0)
|
|
self.save_load_file("%s.ppm", "[ascii]", rgb16, 0)
|
|
|
|
@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/9/0_0.png")
|
|
assert x.width == 255
|
|
y = pyvips.Image.new_from_file(filename + "_files/9/1_0.png")
|
|
assert y.width == 37
|
|
|
|
# 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/9/0_1.png")
|
|
assert y.height == 189
|
|
|
|
# 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
|
|
|
|
# 9 should be the final layer
|
|
assert not os.path.isdir(filename + "_files/10")
|
|
|
|
# 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 + "/1/1/1.jpg")
|
|
assert x.width == 256
|
|
assert x.height == 256
|
|
assert not os.path.exists(filename + "/1/1/2.jpg")
|
|
assert not os.path.exists(filename + "/2")
|
|
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 \
|
|
.replicate(2, 2) \
|
|
.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 \
|
|
.replicate(2, 2) \
|
|
.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 + "/TileGroup0/1-0-0.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/9/0_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/9/1_1.jpeg")
|
|
assert y.width == 236
|
|
|
|
# test tile-size
|
|
filename = temp_filename(self.tempdir, '')
|
|
self.colour.dzsave(filename, tile_size=512)
|
|
|
|
y = pyvips.Image.new_from_file(filename + "_files/9/0_0.jpeg")
|
|
assert y.width == 290
|
|
assert y.height == 442
|
|
|
|
# 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")
|
|
|
|
# test no-strip ... icc profiles should be passed down
|
|
filename = temp_filename(self.tempdir, '')
|
|
self.colour.dzsave(filename, no_strip=True)
|
|
|
|
y = pyvips.Image.new_from_file(filename + "_files/0/0_0.jpeg")
|
|
assert y.get_typeof("icc-profile-data") != 0
|
|
|
|
@skip_if_no("heifload")
|
|
def test_heifload(self):
|
|
def heif_valid(im):
|
|
a = im(10, 10)
|
|
# different versions of libheif decode have slightly different
|
|
# rounding
|
|
assert_almost_equal_objects(a, [197.0, 181.0, 158.0], threshold=2)
|
|
assert im.width == 3024
|
|
assert im.height == 4032
|
|
assert im.bands == 3
|
|
|
|
self.file_loader("heifload", AVIF_FILE, heif_valid)
|
|
self.buffer_loader("heifload_buffer", AVIF_FILE, heif_valid)
|
|
|
|
@skip_if_no("heifsave")
|
|
def test_heifsave(self):
|
|
self.save_load_buffer("heifsave_buffer", "heifload_buffer",
|
|
self.colour, 80, compression="av1")
|
|
# TODO: perhaps we should automatically set the compression to
|
|
# av1 when we save to *.avif?
|
|
#self.save_load("%s.avif", self.colour)
|
|
self.save_load_file(".avif", "[compression=av1]",
|
|
self.colour, 80)
|
|
|
|
# uncomment to test lossless mode, will take a while
|
|
#im = pyvips.Image.new_from_file(AVIF_FILE)
|
|
#buf = im.heifsave_buffer(lossless=True, compression="av1")
|
|
#im2 = pyvips.Image.new_from_buffer(buf, "")
|
|
# not in fact quite lossless
|
|
#assert abs(im.avg() - im2.avg()) < 3
|
|
|
|
# higher Q should mean a bigger buffer, needs libheif >= v1.8.0,
|
|
# see: https://github.com/libvips/libvips/issues/1757
|
|
b1 = self.mono.heifsave_buffer(Q=10, compression="av1")
|
|
b2 = self.mono.heifsave_buffer(Q=90, compression="av1")
|
|
assert len(b2) > len(b1)
|
|
|
|
# Chroma subsampling should produce smaller file size for same Q
|
|
b1 = self.colour.heifsave_buffer(compression="av1", subsample_mode="on")
|
|
b2 = self.colour.heifsave_buffer(compression="av1", subsample_mode="off")
|
|
assert len(b2) > len(b1)
|
|
|
|
# try saving an image with an ICC profile and reading it back
|
|
# not all libheif have profile support, so put it in an if
|
|
buf = self.colour.heifsave_buffer(Q=10, compression="av1")
|
|
im = pyvips.Image.new_from_buffer(buf, "")
|
|
p1 = self.colour.get("icc-profile-data")
|
|
if im.get_typeof("icc-profile-data") != 0:
|
|
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
|
|
|
|
# test that exif changes change the output of heifsave
|
|
# first make sure we have exif support
|
|
z = pyvips.Image.new_from_file(AVIF_FILE)
|
|
if z.get_typeof("exif-ifd0-Make") != 0:
|
|
x = z.copy()
|
|
x.set("exif-ifd0-Make", "banana")
|
|
buf = x.heifsave_buffer(Q=10, compression="av1")
|
|
y = pyvips.Image.new_from_buffer(buf, "")
|
|
assert y.get("exif-ifd0-Make").split(" ")[0] == "banana"
|
|
|
|
@skip_if_no("jp2kload")
|
|
def test_jp2kload(self):
|
|
def jp2k_valid(im):
|
|
a = im(402, 73)
|
|
assert_almost_equal_objects(a, [141, 144, 73], threshold=2)
|
|
assert im.width == 800
|
|
assert im.height == 400
|
|
assert im.bands == 3
|
|
|
|
self.file_loader("jp2kload", JP2K_FILE, jp2k_valid)
|
|
self.buffer_loader("jp2kload_buffer", JP2K_FILE, jp2k_valid)
|
|
|
|
@skip_if_no("jp2ksave")
|
|
def test_jp2ksave(self):
|
|
self.save_load_buffer("jp2ksave_buffer", "jp2kload_buffer",
|
|
self.colour, 80)
|
|
|
|
buf = self.colour.jp2ksave_buffer(lossless=True)
|
|
im2 = pyvips.Image.new_from_buffer(buf, "")
|
|
assert (self.colour == im2).min() == 255
|
|
|
|
# higher Q should mean a bigger buffer
|
|
b1 = self.mono.jp2ksave_buffer(Q=10)
|
|
b2 = self.mono.jp2ksave_buffer(Q=90)
|
|
assert len(b2) > len(b1)
|
|
|
|
# disabling chroma subsample should mean a bigger buffer
|
|
b1 = self.colour.jp2ksave_buffer(subsample_mode="on")
|
|
b2 = self.colour.jp2ksave_buffer(subsample_mode="off")
|
|
assert len(b2) > len(b1)
|
|
|
|
# enabling lossless should mean a bigger buffer
|
|
b1 = self.colour.jp2ksave_buffer(lossless=False)
|
|
b2 = self.colour.jp2ksave_buffer(lossless=True)
|
|
assert len(b2) > len(b1)
|
|
|
|
# 16-bit colour load and save
|
|
im = self.colour.colourspace("rgb16")
|
|
buf = im.jp2ksave_buffer(lossless=True)
|
|
im2 = pyvips.Image.new_from_buffer(buf, "")
|
|
assert (im == im2).min() == 255
|
|
|
|
# openjpeg 32-bit load and save doesn't seem to work, comment out
|
|
# im = self.colour.colourspace("rgb16").cast("uint") << 14
|
|
# buf = im.jp2ksave_buffer(lossless=True)
|
|
# im2 = pyvips.Image.new_from_buffer(buf, "")
|
|
# assert (im == im2).min() == 255
|
|
|
|
|
|
if __name__ == '__main__':
|
|
pytest.main()
|