mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-11-11 12:17:14 +03:00
854 lines
31 KiB
Python
854 lines
31 KiB
Python
import base64
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import io
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import itertools
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import logging
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import os
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from collections import namedtuple
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from ctypes import c_float
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from PIL import Image, TiffImagePlugin, TiffTags, features
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from .helper import PillowTestCase, hopper
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logger = logging.getLogger(__name__)
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class LibTiffTestCase(PillowTestCase):
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def setUp(self):
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if not features.check("libtiff"):
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self.skipTest("tiff support not available")
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def _assert_noerr(self, im):
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"""Helper tests that assert basic sanity about the g4 tiff reading"""
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# 1 bit
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self.assertEqual(im.mode, "1")
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# Does the data actually load
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im.load()
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im.getdata()
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try:
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self.assertEqual(im._compression, "group4")
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except AttributeError:
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print("No _compression")
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print(dir(im))
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# can we write it back out, in a different form.
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out = self.tempfile("temp.png")
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im.save(out)
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out_bytes = io.BytesIO()
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im.save(out_bytes, format="tiff", compression="group4")
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class TestFileLibTiff(LibTiffTestCase):
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def test_g4_tiff(self):
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"""Test the ordinary file path load path"""
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test_file = "Tests/images/hopper_g4_500.tif"
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with Image.open(test_file) as im:
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self.assertEqual(im.size, (500, 500))
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self._assert_noerr(im)
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def test_g4_large(self):
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test_file = "Tests/images/pport_g4.tif"
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with Image.open(test_file) as im:
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self._assert_noerr(im)
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def test_g4_tiff_file(self):
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"""Testing the string load path"""
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test_file = "Tests/images/hopper_g4_500.tif"
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with open(test_file, "rb") as f:
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with Image.open(f) as im:
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self.assertEqual(im.size, (500, 500))
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self._assert_noerr(im)
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def test_g4_tiff_bytesio(self):
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"""Testing the stringio loading code path"""
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test_file = "Tests/images/hopper_g4_500.tif"
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s = io.BytesIO()
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with open(test_file, "rb") as f:
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s.write(f.read())
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s.seek(0)
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with Image.open(s) as im:
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self.assertEqual(im.size, (500, 500))
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self._assert_noerr(im)
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def test_g4_non_disk_file_object(self):
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"""Testing loading from non-disk non-BytesIO file object"""
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test_file = "Tests/images/hopper_g4_500.tif"
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s = io.BytesIO()
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with open(test_file, "rb") as f:
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s.write(f.read())
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s.seek(0)
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r = io.BufferedReader(s)
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with Image.open(r) as im:
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self.assertEqual(im.size, (500, 500))
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self._assert_noerr(im)
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def test_g4_eq_png(self):
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""" Checking that we're actually getting the data that we expect"""
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with Image.open("Tests/images/hopper_bw_500.png") as png:
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with Image.open("Tests/images/hopper_g4_500.tif") as g4:
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self.assert_image_equal(g4, png)
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# see https://github.com/python-pillow/Pillow/issues/279
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def test_g4_fillorder_eq_png(self):
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""" Checking that we're actually getting the data that we expect"""
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with Image.open("Tests/images/g4-fillorder-test.png") as png:
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with Image.open("Tests/images/g4-fillorder-test.tif") as g4:
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self.assert_image_equal(g4, png)
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def test_g4_write(self):
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"""Checking to see that the saved image is the same as what we wrote"""
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test_file = "Tests/images/hopper_g4_500.tif"
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with Image.open(test_file) as orig:
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out = self.tempfile("temp.tif")
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rot = orig.transpose(Image.ROTATE_90)
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self.assertEqual(rot.size, (500, 500))
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rot.save(out)
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with Image.open(out) as reread:
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self.assertEqual(reread.size, (500, 500))
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self._assert_noerr(reread)
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self.assert_image_equal(reread, rot)
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self.assertEqual(reread.info["compression"], "group4")
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self.assertEqual(reread.info["compression"], orig.info["compression"])
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self.assertNotEqual(orig.tobytes(), reread.tobytes())
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def test_adobe_deflate_tiff(self):
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test_file = "Tests/images/tiff_adobe_deflate.tif"
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with Image.open(test_file) as im:
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self.assertEqual(im.mode, "RGB")
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self.assertEqual(im.size, (278, 374))
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self.assertEqual(im.tile[0][:3], ("libtiff", (0, 0, 278, 374), 0))
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im.load()
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self.assert_image_equal_tofile(im, "Tests/images/tiff_adobe_deflate.png")
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def test_write_metadata(self):
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""" Test metadata writing through libtiff """
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for legacy_api in [False, True]:
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f = self.tempfile("temp.tiff")
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with Image.open("Tests/images/hopper_g4.tif") as img:
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img.save(f, tiffinfo=img.tag)
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if legacy_api:
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original = img.tag.named()
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else:
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original = img.tag_v2.named()
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# PhotometricInterpretation is set from SAVE_INFO,
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# not the original image.
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ignored = [
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"StripByteCounts",
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"RowsPerStrip",
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"PageNumber",
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"PhotometricInterpretation",
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]
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with Image.open(f) as loaded:
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if legacy_api:
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reloaded = loaded.tag.named()
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else:
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reloaded = loaded.tag_v2.named()
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for tag, value in itertools.chain(reloaded.items(), original.items()):
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if tag not in ignored:
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val = original[tag]
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if tag.endswith("Resolution"):
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if legacy_api:
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self.assertEqual(
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c_float(val[0][0] / val[0][1]).value,
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c_float(value[0][0] / value[0][1]).value,
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msg="%s didn't roundtrip" % tag,
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)
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else:
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self.assertEqual(
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c_float(val).value,
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c_float(value).value,
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msg="%s didn't roundtrip" % tag,
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)
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else:
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self.assertEqual(val, value, msg="%s didn't roundtrip" % tag)
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# https://github.com/python-pillow/Pillow/issues/1561
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requested_fields = ["StripByteCounts", "RowsPerStrip", "StripOffsets"]
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for field in requested_fields:
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self.assertIn(field, reloaded, "%s not in metadata" % field)
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def test_additional_metadata(self):
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# these should not crash. Seriously dummy data, most of it doesn't make
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# any sense, so we're running up against limits where we're asking
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# libtiff to do stupid things.
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# Get the list of the ones that we should be able to write
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core_items = {
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tag: info
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for tag, info in ((s, TiffTags.lookup(s)) for s in TiffTags.LIBTIFF_CORE)
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if info.type is not None
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}
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# Exclude ones that have special meaning
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# that we're already testing them
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with Image.open("Tests/images/hopper_g4.tif") as im:
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for tag in im.tag_v2:
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try:
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del core_items[tag]
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except KeyError:
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pass
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# Type codes:
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# 2: "ascii",
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# 3: "short",
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# 4: "long",
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# 5: "rational",
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# 12: "double",
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# Type: dummy value
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values = {
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2: "test",
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3: 1,
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4: 2 ** 20,
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5: TiffImagePlugin.IFDRational(100, 1),
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12: 1.05,
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}
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new_ifd = TiffImagePlugin.ImageFileDirectory_v2()
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for tag, info in core_items.items():
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if info.length == 1:
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new_ifd[tag] = values[info.type]
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if info.length == 0:
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new_ifd[tag] = tuple(values[info.type] for _ in range(3))
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else:
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new_ifd[tag] = tuple(values[info.type] for _ in range(info.length))
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# Extra samples really doesn't make sense in this application.
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del new_ifd[338]
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out = self.tempfile("temp.tif")
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TiffImagePlugin.WRITE_LIBTIFF = True
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im.save(out, tiffinfo=new_ifd)
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TiffImagePlugin.WRITE_LIBTIFF = False
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def test_custom_metadata(self):
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tc = namedtuple("test_case", "value,type,supported_by_default")
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custom = {
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37000 + k: v
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for k, v in enumerate(
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[
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tc(4, TiffTags.SHORT, True),
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tc(123456789, TiffTags.LONG, True),
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tc(-4, TiffTags.SIGNED_BYTE, False),
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tc(-4, TiffTags.SIGNED_SHORT, False),
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tc(-123456789, TiffTags.SIGNED_LONG, False),
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tc(TiffImagePlugin.IFDRational(4, 7), TiffTags.RATIONAL, True),
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tc(4.25, TiffTags.FLOAT, True),
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tc(4.25, TiffTags.DOUBLE, True),
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tc("custom tag value", TiffTags.ASCII, True),
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tc(b"custom tag value", TiffTags.BYTE, True),
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tc((4, 5, 6), TiffTags.SHORT, True),
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tc((123456789, 9, 34, 234, 219387, 92432323), TiffTags.LONG, True),
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tc((-4, 9, 10), TiffTags.SIGNED_BYTE, False),
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tc((-4, 5, 6), TiffTags.SIGNED_SHORT, False),
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tc(
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(-123456789, 9, 34, 234, 219387, -92432323),
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TiffTags.SIGNED_LONG,
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False,
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),
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tc((4.25, 5.25), TiffTags.FLOAT, True),
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tc((4.25, 5.25), TiffTags.DOUBLE, True),
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# array of TIFF_BYTE requires bytes instead of tuple for backwards
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# compatibility
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tc(bytes([4]), TiffTags.BYTE, True),
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tc(bytes((4, 9, 10)), TiffTags.BYTE, True),
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]
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)
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}
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libtiffs = [False]
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if Image.core.libtiff_support_custom_tags:
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libtiffs.append(True)
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for libtiff in libtiffs:
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TiffImagePlugin.WRITE_LIBTIFF = libtiff
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def check_tags(tiffinfo):
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im = hopper()
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out = self.tempfile("temp.tif")
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im.save(out, tiffinfo=tiffinfo)
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with Image.open(out) as reloaded:
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for tag, value in tiffinfo.items():
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reloaded_value = reloaded.tag_v2[tag]
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if (
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isinstance(reloaded_value, TiffImagePlugin.IFDRational)
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and libtiff
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):
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# libtiff does not support real RATIONALS
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self.assertAlmostEqual(float(reloaded_value), float(value))
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continue
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if libtiff and isinstance(value, bytes):
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value = value.decode()
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self.assertEqual(reloaded_value, value)
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# Test with types
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ifd = TiffImagePlugin.ImageFileDirectory_v2()
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for tag, tagdata in custom.items():
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ifd[tag] = tagdata.value
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ifd.tagtype[tag] = tagdata.type
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check_tags(ifd)
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# Test without types. This only works for some types, int for example are
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# always encoded as LONG and not SIGNED_LONG.
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check_tags(
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{
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tag: tagdata.value
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for tag, tagdata in custom.items()
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if tagdata.supported_by_default
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}
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)
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TiffImagePlugin.WRITE_LIBTIFF = False
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def test_int_dpi(self):
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# issue #1765
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im = hopper("RGB")
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out = self.tempfile("temp.tif")
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TiffImagePlugin.WRITE_LIBTIFF = True
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im.save(out, dpi=(72, 72))
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TiffImagePlugin.WRITE_LIBTIFF = False
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with Image.open(out) as reloaded:
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self.assertEqual(reloaded.info["dpi"], (72.0, 72.0))
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def test_g3_compression(self):
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with Image.open("Tests/images/hopper_g4_500.tif") as i:
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out = self.tempfile("temp.tif")
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i.save(out, compression="group3")
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with Image.open(out) as reread:
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self.assertEqual(reread.info["compression"], "group3")
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self.assert_image_equal(reread, i)
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def test_little_endian(self):
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with Image.open("Tests/images/16bit.deflate.tif") as im:
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self.assertEqual(im.getpixel((0, 0)), 480)
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self.assertEqual(im.mode, "I;16")
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b = im.tobytes()
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# Bytes are in image native order (little endian)
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self.assertEqual(b[0], ord(b"\xe0"))
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self.assertEqual(b[1], ord(b"\x01"))
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out = self.tempfile("temp.tif")
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# out = "temp.le.tif"
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im.save(out)
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with Image.open(out) as reread:
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self.assertEqual(reread.info["compression"], im.info["compression"])
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self.assertEqual(reread.getpixel((0, 0)), 480)
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# UNDONE - libtiff defaults to writing in native endian, so
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# on big endian, we'll get back mode = 'I;16B' here.
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def test_big_endian(self):
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with Image.open("Tests/images/16bit.MM.deflate.tif") as im:
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self.assertEqual(im.getpixel((0, 0)), 480)
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self.assertEqual(im.mode, "I;16B")
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b = im.tobytes()
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# Bytes are in image native order (big endian)
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self.assertEqual(b[0], ord(b"\x01"))
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self.assertEqual(b[1], ord(b"\xe0"))
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out = self.tempfile("temp.tif")
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im.save(out)
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with Image.open(out) as reread:
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self.assertEqual(reread.info["compression"], im.info["compression"])
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self.assertEqual(reread.getpixel((0, 0)), 480)
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def test_g4_string_info(self):
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"""Tests String data in info directory"""
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test_file = "Tests/images/hopper_g4_500.tif"
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with Image.open(test_file) as orig:
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out = self.tempfile("temp.tif")
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orig.tag[269] = "temp.tif"
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orig.save(out)
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with Image.open(out) as reread:
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self.assertEqual("temp.tif", reread.tag_v2[269])
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self.assertEqual("temp.tif", reread.tag[269][0])
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def test_12bit_rawmode(self):
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""" Are we generating the same interpretation
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of the image as Imagemagick is? """
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TiffImagePlugin.READ_LIBTIFF = True
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with Image.open("Tests/images/12bit.cropped.tif") as im:
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im.load()
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TiffImagePlugin.READ_LIBTIFF = False
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# to make the target --
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# convert 12bit.cropped.tif -depth 16 tmp.tif
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# convert tmp.tif -evaluate RightShift 4 12in16bit2.tif
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# imagemagick will auto scale so that a 12bit FFF is 16bit FFF0,
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# so we need to unshift so that the integer values are the same.
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self.assert_image_equal_tofile(im, "Tests/images/12in16bit.tif")
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def test_blur(self):
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# test case from irc, how to do blur on b/w image
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# and save to compressed tif.
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from PIL import ImageFilter
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out = self.tempfile("temp.tif")
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with Image.open("Tests/images/pport_g4.tif") as im:
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im = im.convert("L")
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im = im.filter(ImageFilter.GaussianBlur(4))
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im.save(out, compression="tiff_adobe_deflate")
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with Image.open(out) as im2:
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im2.load()
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self.assert_image_equal(im, im2)
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def test_compressions(self):
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# Test various tiff compressions and assert similar image content but reduced
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# file sizes.
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im = hopper("RGB")
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out = self.tempfile("temp.tif")
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im.save(out)
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size_raw = os.path.getsize(out)
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for compression in ("packbits", "tiff_lzw"):
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im.save(out, compression=compression)
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size_compressed = os.path.getsize(out)
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with Image.open(out) as im2:
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self.assert_image_equal(im, im2)
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im.save(out, compression="jpeg")
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size_jpeg = os.path.getsize(out)
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with Image.open(out) as im2:
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self.assert_image_similar(im, im2, 30)
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im.save(out, compression="jpeg", quality=30)
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size_jpeg_30 = os.path.getsize(out)
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with Image.open(out) as im3:
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self.assert_image_similar(im2, im3, 30)
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self.assertGreater(size_raw, size_compressed)
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self.assertGreater(size_compressed, size_jpeg)
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self.assertGreater(size_jpeg, size_jpeg_30)
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def test_quality(self):
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im = hopper("RGB")
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out = self.tempfile("temp.tif")
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self.assertRaises(ValueError, im.save, out, compression="tiff_lzw", quality=50)
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self.assertRaises(ValueError, im.save, out, compression="jpeg", quality=-1)
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self.assertRaises(ValueError, im.save, out, compression="jpeg", quality=101)
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self.assertRaises(ValueError, im.save, out, compression="jpeg", quality="good")
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im.save(out, compression="jpeg", quality=0)
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im.save(out, compression="jpeg", quality=100)
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def test_cmyk_save(self):
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im = hopper("CMYK")
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out = self.tempfile("temp.tif")
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im.save(out, compression="tiff_adobe_deflate")
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with Image.open(out) as im2:
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self.assert_image_equal(im, im2)
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def xtest_bw_compression_w_rgb(self):
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""" This test passes, but when running all tests causes a failure due
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to output on stderr from the error thrown by libtiff. We need to
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capture that but not now"""
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im = hopper("RGB")
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out = self.tempfile("temp.tif")
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self.assertRaises(IOError, im.save, out, compression="tiff_ccitt")
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self.assertRaises(IOError, im.save, out, compression="group3")
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self.assertRaises(IOError, im.save, out, compression="group4")
|
|
|
|
def test_fp_leak(self):
|
|
im = Image.open("Tests/images/hopper_g4_500.tif")
|
|
fn = im.fp.fileno()
|
|
|
|
os.fstat(fn)
|
|
im.load() # this should close it.
|
|
self.assertRaises(OSError, os.fstat, fn)
|
|
im = None # this should force even more closed.
|
|
self.assertRaises(OSError, os.fstat, fn)
|
|
self.assertRaises(OSError, os.close, fn)
|
|
|
|
def test_multipage(self):
|
|
# issue #862
|
|
TiffImagePlugin.READ_LIBTIFF = True
|
|
with Image.open("Tests/images/multipage.tiff") as im:
|
|
# file is a multipage tiff, 10x10 green, 10x10 red, 20x20 blue
|
|
|
|
im.seek(0)
|
|
self.assertEqual(im.size, (10, 10))
|
|
self.assertEqual(im.convert("RGB").getpixel((0, 0)), (0, 128, 0))
|
|
self.assertTrue(im.tag.next)
|
|
|
|
im.seek(1)
|
|
self.assertEqual(im.size, (10, 10))
|
|
self.assertEqual(im.convert("RGB").getpixel((0, 0)), (255, 0, 0))
|
|
self.assertTrue(im.tag.next)
|
|
|
|
im.seek(2)
|
|
self.assertFalse(im.tag.next)
|
|
self.assertEqual(im.size, (20, 20))
|
|
self.assertEqual(im.convert("RGB").getpixel((0, 0)), (0, 0, 255))
|
|
|
|
TiffImagePlugin.READ_LIBTIFF = False
|
|
|
|
def test_multipage_nframes(self):
|
|
# issue #862
|
|
TiffImagePlugin.READ_LIBTIFF = True
|
|
with Image.open("Tests/images/multipage.tiff") as im:
|
|
frames = im.n_frames
|
|
self.assertEqual(frames, 3)
|
|
for _ in range(frames):
|
|
im.seek(0)
|
|
# Should not raise ValueError: I/O operation on closed file
|
|
im.load()
|
|
|
|
TiffImagePlugin.READ_LIBTIFF = False
|
|
|
|
def test__next(self):
|
|
TiffImagePlugin.READ_LIBTIFF = True
|
|
with Image.open("Tests/images/hopper.tif") as im:
|
|
self.assertFalse(im.tag.next)
|
|
im.load()
|
|
self.assertFalse(im.tag.next)
|
|
|
|
def test_4bit(self):
|
|
# Arrange
|
|
test_file = "Tests/images/hopper_gray_4bpp.tif"
|
|
original = hopper("L")
|
|
|
|
# Act
|
|
TiffImagePlugin.READ_LIBTIFF = True
|
|
with Image.open(test_file) as im:
|
|
TiffImagePlugin.READ_LIBTIFF = False
|
|
|
|
# Assert
|
|
self.assertEqual(im.size, (128, 128))
|
|
self.assertEqual(im.mode, "L")
|
|
self.assert_image_similar(im, original, 7.3)
|
|
|
|
def test_gray_semibyte_per_pixel(self):
|
|
test_files = (
|
|
(
|
|
24.8, # epsilon
|
|
( # group
|
|
"Tests/images/tiff_gray_2_4_bpp/hopper2.tif",
|
|
"Tests/images/tiff_gray_2_4_bpp/hopper2I.tif",
|
|
"Tests/images/tiff_gray_2_4_bpp/hopper2R.tif",
|
|
"Tests/images/tiff_gray_2_4_bpp/hopper2IR.tif",
|
|
),
|
|
),
|
|
(
|
|
7.3, # epsilon
|
|
( # group
|
|
"Tests/images/tiff_gray_2_4_bpp/hopper4.tif",
|
|
"Tests/images/tiff_gray_2_4_bpp/hopper4I.tif",
|
|
"Tests/images/tiff_gray_2_4_bpp/hopper4R.tif",
|
|
"Tests/images/tiff_gray_2_4_bpp/hopper4IR.tif",
|
|
),
|
|
),
|
|
)
|
|
original = hopper("L")
|
|
for epsilon, group in test_files:
|
|
with Image.open(group[0]) as im:
|
|
self.assertEqual(im.size, (128, 128))
|
|
self.assertEqual(im.mode, "L")
|
|
self.assert_image_similar(im, original, epsilon)
|
|
for file in group[1:]:
|
|
with Image.open(file) as im2:
|
|
self.assertEqual(im2.size, (128, 128))
|
|
self.assertEqual(im2.mode, "L")
|
|
self.assert_image_equal(im, im2)
|
|
|
|
def test_save_bytesio(self):
|
|
# PR 1011
|
|
# Test TIFF saving to io.BytesIO() object.
|
|
|
|
TiffImagePlugin.WRITE_LIBTIFF = True
|
|
TiffImagePlugin.READ_LIBTIFF = True
|
|
|
|
# Generate test image
|
|
pilim = hopper()
|
|
|
|
def save_bytesio(compression=None):
|
|
|
|
buffer_io = io.BytesIO()
|
|
pilim.save(buffer_io, format="tiff", compression=compression)
|
|
buffer_io.seek(0)
|
|
|
|
with Image.open(buffer_io) as pilim_load:
|
|
self.assert_image_similar(pilim, pilim_load, 0)
|
|
|
|
save_bytesio()
|
|
save_bytesio("raw")
|
|
save_bytesio("packbits")
|
|
save_bytesio("tiff_lzw")
|
|
|
|
TiffImagePlugin.WRITE_LIBTIFF = False
|
|
TiffImagePlugin.READ_LIBTIFF = False
|
|
|
|
def test_crashing_metadata(self):
|
|
# issue 1597
|
|
with Image.open("Tests/images/rdf.tif") as im:
|
|
out = self.tempfile("temp.tif")
|
|
|
|
TiffImagePlugin.WRITE_LIBTIFF = True
|
|
# this shouldn't crash
|
|
im.save(out, format="TIFF")
|
|
TiffImagePlugin.WRITE_LIBTIFF = False
|
|
|
|
def test_page_number_x_0(self):
|
|
# Issue 973
|
|
# Test TIFF with tag 297 (Page Number) having value of 0 0.
|
|
# The first number is the current page number.
|
|
# The second is the total number of pages, zero means not available.
|
|
outfile = self.tempfile("temp.tif")
|
|
# Created by printing a page in Chrome to PDF, then:
|
|
# /usr/bin/gs -q -sDEVICE=tiffg3 -sOutputFile=total-pages-zero.tif
|
|
# -dNOPAUSE /tmp/test.pdf -c quit
|
|
infile = "Tests/images/total-pages-zero.tif"
|
|
with Image.open(infile) as im:
|
|
# Should not divide by zero
|
|
im.save(outfile)
|
|
|
|
def test_fd_duplication(self):
|
|
# https://github.com/python-pillow/Pillow/issues/1651
|
|
|
|
tmpfile = self.tempfile("temp.tif")
|
|
with open(tmpfile, "wb") as f:
|
|
with open("Tests/images/g4-multi.tiff", "rb") as src:
|
|
f.write(src.read())
|
|
|
|
im = Image.open(tmpfile)
|
|
im.n_frames
|
|
im.close()
|
|
# Should not raise PermissionError.
|
|
os.remove(tmpfile)
|
|
|
|
def test_read_icc(self):
|
|
with Image.open("Tests/images/hopper.iccprofile.tif") as img:
|
|
icc = img.info.get("icc_profile")
|
|
self.assertIsNotNone(icc)
|
|
TiffImagePlugin.READ_LIBTIFF = True
|
|
with Image.open("Tests/images/hopper.iccprofile.tif") as img:
|
|
icc_libtiff = img.info.get("icc_profile")
|
|
self.assertIsNotNone(icc_libtiff)
|
|
TiffImagePlugin.READ_LIBTIFF = False
|
|
self.assertEqual(icc, icc_libtiff)
|
|
|
|
def test_multipage_compression(self):
|
|
with Image.open("Tests/images/compression.tif") as im:
|
|
|
|
im.seek(0)
|
|
self.assertEqual(im._compression, "tiff_ccitt")
|
|
self.assertEqual(im.size, (10, 10))
|
|
|
|
im.seek(1)
|
|
self.assertEqual(im._compression, "packbits")
|
|
self.assertEqual(im.size, (10, 10))
|
|
im.load()
|
|
|
|
im.seek(0)
|
|
self.assertEqual(im._compression, "tiff_ccitt")
|
|
self.assertEqual(im.size, (10, 10))
|
|
im.load()
|
|
|
|
def test_save_tiff_with_jpegtables(self):
|
|
# Arrange
|
|
outfile = self.tempfile("temp.tif")
|
|
|
|
# Created with ImageMagick: convert hopper.jpg hopper_jpg.tif
|
|
# Contains JPEGTables (347) tag
|
|
infile = "Tests/images/hopper_jpg.tif"
|
|
with Image.open(infile) as im:
|
|
# Act / Assert
|
|
# Should not raise UnicodeDecodeError or anything else
|
|
im.save(outfile)
|
|
|
|
def test_16bit_RGB_tiff(self):
|
|
with Image.open("Tests/images/tiff_16bit_RGB.tiff") as im:
|
|
self.assertEqual(im.mode, "RGB")
|
|
self.assertEqual(im.size, (100, 40))
|
|
self.assertEqual(
|
|
im.tile,
|
|
[
|
|
(
|
|
"libtiff",
|
|
(0, 0, 100, 40),
|
|
0,
|
|
("RGB;16N", "tiff_adobe_deflate", False, 8),
|
|
)
|
|
],
|
|
)
|
|
im.load()
|
|
|
|
self.assert_image_equal_tofile(im, "Tests/images/tiff_16bit_RGB_target.png")
|
|
|
|
def test_16bit_RGBa_tiff(self):
|
|
with Image.open("Tests/images/tiff_16bit_RGBa.tiff") as im:
|
|
self.assertEqual(im.mode, "RGBA")
|
|
self.assertEqual(im.size, (100, 40))
|
|
self.assertEqual(
|
|
im.tile,
|
|
[
|
|
(
|
|
"libtiff",
|
|
(0, 0, 100, 40),
|
|
0,
|
|
("RGBa;16N", "tiff_lzw", False, 38236),
|
|
)
|
|
],
|
|
)
|
|
im.load()
|
|
|
|
self.assert_image_equal_tofile(
|
|
im, "Tests/images/tiff_16bit_RGBa_target.png"
|
|
)
|
|
|
|
def test_gimp_tiff(self):
|
|
# Read TIFF JPEG images from GIMP [@PIL168]
|
|
|
|
codecs = dir(Image.core)
|
|
if "jpeg_decoder" not in codecs:
|
|
self.skipTest("jpeg support not available")
|
|
|
|
filename = "Tests/images/pil168.tif"
|
|
with Image.open(filename) as im:
|
|
self.assertEqual(im.mode, "RGB")
|
|
self.assertEqual(im.size, (256, 256))
|
|
self.assertEqual(
|
|
im.tile,
|
|
[("libtiff", (0, 0, 256, 256), 0, ("RGB", "jpeg", False, 5122))],
|
|
)
|
|
im.load()
|
|
|
|
self.assert_image_equal_tofile(im, "Tests/images/pil168.png")
|
|
|
|
def test_sampleformat(self):
|
|
# https://github.com/python-pillow/Pillow/issues/1466
|
|
with Image.open("Tests/images/copyleft.tiff") as im:
|
|
self.assertEqual(im.mode, "RGB")
|
|
|
|
self.assert_image_equal_tofile(im, "Tests/images/copyleft.png", mode="RGB")
|
|
|
|
def test_lzw(self):
|
|
with Image.open("Tests/images/hopper_lzw.tif") as im:
|
|
self.assertEqual(im.mode, "RGB")
|
|
self.assertEqual(im.size, (128, 128))
|
|
self.assertEqual(im.format, "TIFF")
|
|
im2 = hopper()
|
|
self.assert_image_similar(im, im2, 5)
|
|
|
|
def test_strip_cmyk_jpeg(self):
|
|
infile = "Tests/images/tiff_strip_cmyk_jpeg.tif"
|
|
with Image.open(infile) as im:
|
|
self.assert_image_similar_tofile(
|
|
im, "Tests/images/pil_sample_cmyk.jpg", 0.5
|
|
)
|
|
|
|
def test_strip_cmyk_16l_jpeg(self):
|
|
infile = "Tests/images/tiff_strip_cmyk_16l_jpeg.tif"
|
|
with Image.open(infile) as im:
|
|
self.assert_image_similar_tofile(
|
|
im, "Tests/images/pil_sample_cmyk.jpg", 0.5
|
|
)
|
|
|
|
def test_strip_ycbcr_jpeg_2x2_sampling(self):
|
|
infile = "Tests/images/tiff_strip_ycbcr_jpeg_2x2_sampling.tif"
|
|
with Image.open(infile) as im:
|
|
self.assert_image_similar_tofile(im, "Tests/images/flower.jpg", 0.5)
|
|
|
|
def test_strip_ycbcr_jpeg_1x1_sampling(self):
|
|
infile = "Tests/images/tiff_strip_ycbcr_jpeg_1x1_sampling.tif"
|
|
with Image.open(infile) as im:
|
|
self.assert_image_equal_tofile(im, "Tests/images/flower2.jpg")
|
|
|
|
def test_tiled_cmyk_jpeg(self):
|
|
infile = "Tests/images/tiff_tiled_cmyk_jpeg.tif"
|
|
with Image.open(infile) as im:
|
|
self.assert_image_similar_tofile(
|
|
im, "Tests/images/pil_sample_cmyk.jpg", 0.5
|
|
)
|
|
|
|
def test_tiled_ycbcr_jpeg_1x1_sampling(self):
|
|
infile = "Tests/images/tiff_tiled_ycbcr_jpeg_1x1_sampling.tif"
|
|
with Image.open(infile) as im:
|
|
self.assert_image_equal_tofile(im, "Tests/images/flower2.jpg")
|
|
|
|
def test_tiled_ycbcr_jpeg_2x2_sampling(self):
|
|
infile = "Tests/images/tiff_tiled_ycbcr_jpeg_2x2_sampling.tif"
|
|
with Image.open(infile) as im:
|
|
self.assert_image_similar_tofile(im, "Tests/images/flower.jpg", 0.5)
|
|
|
|
def test_old_style_jpeg(self):
|
|
infile = "Tests/images/old-style-jpeg-compression.tif"
|
|
with Image.open(infile) as im:
|
|
self.assert_image_equal_tofile(
|
|
im, "Tests/images/old-style-jpeg-compression.png"
|
|
)
|
|
|
|
def test_no_rows_per_strip(self):
|
|
# This image does not have a RowsPerStrip TIFF tag
|
|
infile = "Tests/images/no_rows_per_strip.tif"
|
|
with Image.open(infile) as im:
|
|
im.load()
|
|
self.assertEqual(im.size, (950, 975))
|
|
|
|
def test_orientation(self):
|
|
with Image.open("Tests/images/g4_orientation_1.tif") as base_im:
|
|
for i in range(2, 9):
|
|
with Image.open("Tests/images/g4_orientation_" + str(i) + ".tif") as im:
|
|
im.load()
|
|
|
|
self.assert_image_similar(base_im, im, 0.7)
|
|
|
|
def test_sampleformat_not_corrupted(self):
|
|
# Assert that a TIFF image with SampleFormat=UINT tag is not corrupted
|
|
# when saving to a new file.
|
|
# Pillow 6.0 fails with "OSError: cannot identify image file".
|
|
tiff = io.BytesIO(
|
|
base64.b64decode(
|
|
b"SUkqAAgAAAAPAP4ABAABAAAAAAAAAAABBAABAAAAAQAAAAEBBAABAAAAAQAA"
|
|
b"AAIBAwADAAAAwgAAAAMBAwABAAAACAAAAAYBAwABAAAAAgAAABEBBAABAAAA"
|
|
b"4AAAABUBAwABAAAAAwAAABYBBAABAAAAAQAAABcBBAABAAAACwAAABoBBQAB"
|
|
b"AAAAyAAAABsBBQABAAAA0AAAABwBAwABAAAAAQAAACgBAwABAAAAAQAAAFMB"
|
|
b"AwADAAAA2AAAAAAAAAAIAAgACAABAAAAAQAAAAEAAAABAAAAAQABAAEAAAB4"
|
|
b"nGNgYAAAAAMAAQ=="
|
|
)
|
|
)
|
|
out = io.BytesIO()
|
|
with Image.open(tiff) as im:
|
|
im.save(out, format="tiff")
|
|
out.seek(0)
|
|
with Image.open(out) as im:
|
|
im.load()
|
|
|
|
def test_realloc_overflow(self):
|
|
TiffImagePlugin.READ_LIBTIFF = True
|
|
with Image.open("Tests/images/tiff_overflow_rows_per_strip.tif") as im:
|
|
with self.assertRaises(IOError) as e:
|
|
im.load()
|
|
|
|
# Assert that the error code is IMAGING_CODEC_MEMORY
|
|
self.assertEqual(str(e.exception), "-9")
|
|
TiffImagePlugin.READ_LIBTIFF = False
|