mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-12-25 17:36:18 +03:00
338 lines
12 KiB
Python
338 lines
12 KiB
Python
import io
|
|
import struct
|
|
|
|
import pytest
|
|
from PIL import Image, TiffImagePlugin, TiffTags
|
|
from PIL.TiffImagePlugin import IFDRational
|
|
|
|
from .helper import PillowTestCase, assert_deep_equal, hopper
|
|
|
|
tag_ids = {info.name: info.value for info in TiffTags.TAGS_V2.values()}
|
|
|
|
|
|
class TestFileTiffMetadata(PillowTestCase):
|
|
def test_rt_metadata(self):
|
|
""" Test writing arbitrary metadata into the tiff image directory
|
|
Use case is ImageJ private tags, one numeric, one arbitrary
|
|
data. https://github.com/python-pillow/Pillow/issues/291
|
|
"""
|
|
|
|
img = hopper()
|
|
|
|
# Behaviour change: re #1416
|
|
# Pre ifd rewrite, ImageJMetaData was being written as a string(2),
|
|
# Post ifd rewrite, it's defined as arbitrary bytes(7). It should
|
|
# roundtrip with the actual bytes, rather than stripped text
|
|
# of the premerge tests.
|
|
#
|
|
# For text items, we still have to decode('ascii','replace') because
|
|
# the tiff file format can't take 8 bit bytes in that field.
|
|
|
|
basetextdata = "This is some arbitrary metadata for a text field"
|
|
bindata = basetextdata.encode("ascii") + b" \xff"
|
|
textdata = basetextdata + " " + chr(255)
|
|
reloaded_textdata = basetextdata + " ?"
|
|
floatdata = 12.345
|
|
doubledata = 67.89
|
|
info = TiffImagePlugin.ImageFileDirectory()
|
|
|
|
ImageJMetaData = tag_ids["ImageJMetaData"]
|
|
ImageJMetaDataByteCounts = tag_ids["ImageJMetaDataByteCounts"]
|
|
ImageDescription = tag_ids["ImageDescription"]
|
|
|
|
info[ImageJMetaDataByteCounts] = len(bindata)
|
|
info[ImageJMetaData] = bindata
|
|
info[tag_ids["RollAngle"]] = floatdata
|
|
info.tagtype[tag_ids["RollAngle"]] = 11
|
|
info[tag_ids["YawAngle"]] = doubledata
|
|
info.tagtype[tag_ids["YawAngle"]] = 12
|
|
|
|
info[ImageDescription] = textdata
|
|
|
|
f = self.tempfile("temp.tif")
|
|
|
|
img.save(f, tiffinfo=info)
|
|
|
|
with Image.open(f) as loaded:
|
|
|
|
self.assertEqual(loaded.tag[ImageJMetaDataByteCounts], (len(bindata),))
|
|
self.assertEqual(loaded.tag_v2[ImageJMetaDataByteCounts], (len(bindata),))
|
|
|
|
self.assertEqual(loaded.tag[ImageJMetaData], bindata)
|
|
self.assertEqual(loaded.tag_v2[ImageJMetaData], bindata)
|
|
|
|
self.assertEqual(loaded.tag[ImageDescription], (reloaded_textdata,))
|
|
self.assertEqual(loaded.tag_v2[ImageDescription], reloaded_textdata)
|
|
|
|
loaded_float = loaded.tag[tag_ids["RollAngle"]][0]
|
|
self.assertAlmostEqual(loaded_float, floatdata, places=5)
|
|
loaded_double = loaded.tag[tag_ids["YawAngle"]][0]
|
|
self.assertAlmostEqual(loaded_double, doubledata)
|
|
|
|
# check with 2 element ImageJMetaDataByteCounts, issue #2006
|
|
|
|
info[ImageJMetaDataByteCounts] = (8, len(bindata) - 8)
|
|
img.save(f, tiffinfo=info)
|
|
with Image.open(f) as loaded:
|
|
|
|
self.assertEqual(
|
|
loaded.tag[ImageJMetaDataByteCounts], (8, len(bindata) - 8)
|
|
)
|
|
self.assertEqual(
|
|
loaded.tag_v2[ImageJMetaDataByteCounts], (8, len(bindata) - 8)
|
|
)
|
|
|
|
def test_read_metadata(self):
|
|
with Image.open("Tests/images/hopper_g4.tif") as img:
|
|
|
|
self.assertEqual(
|
|
{
|
|
"YResolution": IFDRational(4294967295, 113653537),
|
|
"PlanarConfiguration": 1,
|
|
"BitsPerSample": (1,),
|
|
"ImageLength": 128,
|
|
"Compression": 4,
|
|
"FillOrder": 1,
|
|
"RowsPerStrip": 128,
|
|
"ResolutionUnit": 3,
|
|
"PhotometricInterpretation": 0,
|
|
"PageNumber": (0, 1),
|
|
"XResolution": IFDRational(4294967295, 113653537),
|
|
"ImageWidth": 128,
|
|
"Orientation": 1,
|
|
"StripByteCounts": (1968,),
|
|
"SamplesPerPixel": 1,
|
|
"StripOffsets": (8,),
|
|
},
|
|
img.tag_v2.named(),
|
|
)
|
|
|
|
self.assertEqual(
|
|
{
|
|
"YResolution": ((4294967295, 113653537),),
|
|
"PlanarConfiguration": (1,),
|
|
"BitsPerSample": (1,),
|
|
"ImageLength": (128,),
|
|
"Compression": (4,),
|
|
"FillOrder": (1,),
|
|
"RowsPerStrip": (128,),
|
|
"ResolutionUnit": (3,),
|
|
"PhotometricInterpretation": (0,),
|
|
"PageNumber": (0, 1),
|
|
"XResolution": ((4294967295, 113653537),),
|
|
"ImageWidth": (128,),
|
|
"Orientation": (1,),
|
|
"StripByteCounts": (1968,),
|
|
"SamplesPerPixel": (1,),
|
|
"StripOffsets": (8,),
|
|
},
|
|
img.tag.named(),
|
|
)
|
|
|
|
def test_write_metadata(self):
|
|
""" Test metadata writing through the python code """
|
|
with Image.open("Tests/images/hopper.tif") as img:
|
|
f = self.tempfile("temp.tiff")
|
|
img.save(f, tiffinfo=img.tag)
|
|
|
|
original = img.tag_v2.named()
|
|
|
|
with Image.open(f) as loaded:
|
|
reloaded = loaded.tag_v2.named()
|
|
|
|
ignored = ["StripByteCounts", "RowsPerStrip", "PageNumber", "StripOffsets"]
|
|
|
|
for tag, value in reloaded.items():
|
|
if tag in ignored:
|
|
continue
|
|
if isinstance(original[tag], tuple) and isinstance(
|
|
original[tag][0], IFDRational
|
|
):
|
|
# Need to compare element by element in the tuple,
|
|
# not comparing tuples of object references
|
|
assert_deep_equal(
|
|
original[tag],
|
|
value,
|
|
"{} didn't roundtrip, {}, {}".format(tag, original[tag], value),
|
|
)
|
|
else:
|
|
self.assertEqual(
|
|
original[tag],
|
|
value,
|
|
"{} didn't roundtrip, {}, {}".format(tag, original[tag], value),
|
|
)
|
|
|
|
for tag, value in original.items():
|
|
if tag not in ignored:
|
|
self.assertEqual(value, reloaded[tag], "%s didn't roundtrip" % tag)
|
|
|
|
def test_no_duplicate_50741_tag(self):
|
|
self.assertEqual(tag_ids["MakerNoteSafety"], 50741)
|
|
self.assertEqual(tag_ids["BestQualityScale"], 50780)
|
|
|
|
def test_empty_metadata(self):
|
|
f = io.BytesIO(b"II*\x00\x08\x00\x00\x00")
|
|
head = f.read(8)
|
|
info = TiffImagePlugin.ImageFileDirectory(head)
|
|
# Should not raise struct.error.
|
|
pytest.warns(UserWarning, info.load, f)
|
|
|
|
def test_iccprofile(self):
|
|
# https://github.com/python-pillow/Pillow/issues/1462
|
|
out = self.tempfile("temp.tiff")
|
|
with Image.open("Tests/images/hopper.iccprofile.tif") as im:
|
|
im.save(out)
|
|
|
|
with Image.open(out) as reloaded:
|
|
self.assertNotIsInstance(im.info["icc_profile"], tuple)
|
|
self.assertEqual(im.info["icc_profile"], reloaded.info["icc_profile"])
|
|
|
|
def test_iccprofile_binary(self):
|
|
# https://github.com/python-pillow/Pillow/issues/1526
|
|
# We should be able to load this,
|
|
# but probably won't be able to save it.
|
|
|
|
with Image.open("Tests/images/hopper.iccprofile_binary.tif") as im:
|
|
self.assertEqual(im.tag_v2.tagtype[34675], 1)
|
|
self.assertTrue(im.info["icc_profile"])
|
|
|
|
def test_iccprofile_save_png(self):
|
|
with Image.open("Tests/images/hopper.iccprofile.tif") as im:
|
|
outfile = self.tempfile("temp.png")
|
|
im.save(outfile)
|
|
|
|
def test_iccprofile_binary_save_png(self):
|
|
with Image.open("Tests/images/hopper.iccprofile_binary.tif") as im:
|
|
outfile = self.tempfile("temp.png")
|
|
im.save(outfile)
|
|
|
|
def test_exif_div_zero(self):
|
|
im = hopper()
|
|
info = TiffImagePlugin.ImageFileDirectory_v2()
|
|
info[41988] = TiffImagePlugin.IFDRational(0, 0)
|
|
|
|
out = self.tempfile("temp.tiff")
|
|
im.save(out, tiffinfo=info, compression="raw")
|
|
|
|
with Image.open(out) as reloaded:
|
|
self.assertEqual(0, reloaded.tag_v2[41988].numerator)
|
|
self.assertEqual(0, reloaded.tag_v2[41988].denominator)
|
|
|
|
def test_ifd_unsigned_rational(self):
|
|
im = hopper()
|
|
info = TiffImagePlugin.ImageFileDirectory_v2()
|
|
|
|
max_long = 2 ** 32 - 1
|
|
|
|
# 4 bytes unsigned long
|
|
numerator = max_long
|
|
|
|
info[41493] = TiffImagePlugin.IFDRational(numerator, 1)
|
|
|
|
out = self.tempfile("temp.tiff")
|
|
im.save(out, tiffinfo=info, compression="raw")
|
|
|
|
with Image.open(out) as reloaded:
|
|
self.assertEqual(max_long, reloaded.tag_v2[41493].numerator)
|
|
self.assertEqual(1, reloaded.tag_v2[41493].denominator)
|
|
|
|
# out of bounds of 4 byte unsigned long
|
|
numerator = max_long + 1
|
|
|
|
info[41493] = TiffImagePlugin.IFDRational(numerator, 1)
|
|
|
|
out = self.tempfile("temp.tiff")
|
|
im.save(out, tiffinfo=info, compression="raw")
|
|
|
|
with Image.open(out) as reloaded:
|
|
self.assertEqual(max_long, reloaded.tag_v2[41493].numerator)
|
|
self.assertEqual(1, reloaded.tag_v2[41493].denominator)
|
|
|
|
def test_ifd_signed_rational(self):
|
|
im = hopper()
|
|
info = TiffImagePlugin.ImageFileDirectory_v2()
|
|
|
|
# pair of 4 byte signed longs
|
|
numerator = 2 ** 31 - 1
|
|
denominator = -(2 ** 31)
|
|
|
|
info[37380] = TiffImagePlugin.IFDRational(numerator, denominator)
|
|
|
|
out = self.tempfile("temp.tiff")
|
|
im.save(out, tiffinfo=info, compression="raw")
|
|
|
|
with Image.open(out) as reloaded:
|
|
self.assertEqual(numerator, reloaded.tag_v2[37380].numerator)
|
|
self.assertEqual(denominator, reloaded.tag_v2[37380].denominator)
|
|
|
|
numerator = -(2 ** 31)
|
|
denominator = 2 ** 31 - 1
|
|
|
|
info[37380] = TiffImagePlugin.IFDRational(numerator, denominator)
|
|
|
|
out = self.tempfile("temp.tiff")
|
|
im.save(out, tiffinfo=info, compression="raw")
|
|
|
|
with Image.open(out) as reloaded:
|
|
self.assertEqual(numerator, reloaded.tag_v2[37380].numerator)
|
|
self.assertEqual(denominator, reloaded.tag_v2[37380].denominator)
|
|
|
|
# out of bounds of 4 byte signed long
|
|
numerator = -(2 ** 31) - 1
|
|
denominator = 1
|
|
|
|
info[37380] = TiffImagePlugin.IFDRational(numerator, denominator)
|
|
|
|
out = self.tempfile("temp.tiff")
|
|
im.save(out, tiffinfo=info, compression="raw")
|
|
|
|
with Image.open(out) as reloaded:
|
|
self.assertEqual(2 ** 31 - 1, reloaded.tag_v2[37380].numerator)
|
|
self.assertEqual(-1, reloaded.tag_v2[37380].denominator)
|
|
|
|
def test_ifd_signed_long(self):
|
|
im = hopper()
|
|
info = TiffImagePlugin.ImageFileDirectory_v2()
|
|
|
|
info[37000] = -60000
|
|
|
|
out = self.tempfile("temp.tiff")
|
|
im.save(out, tiffinfo=info, compression="raw")
|
|
|
|
with Image.open(out) as reloaded:
|
|
self.assertEqual(reloaded.tag_v2[37000], -60000)
|
|
|
|
def test_empty_values(self):
|
|
data = io.BytesIO(
|
|
b"II*\x00\x08\x00\x00\x00\x03\x00\x1a\x01\x05\x00\x00\x00\x00\x00"
|
|
b"\x00\x00\x00\x00\x1b\x01\x05\x00\x00\x00\x00\x00\x00\x00\x00\x00"
|
|
b"\x98\x82\x02\x00\x07\x00\x00\x002\x00\x00\x00\x00\x00\x00\x00a "
|
|
b"text\x00\x00"
|
|
)
|
|
head = data.read(8)
|
|
info = TiffImagePlugin.ImageFileDirectory_v2(head)
|
|
info.load(data)
|
|
# Should not raise ValueError.
|
|
info = dict(info)
|
|
self.assertIn(33432, info)
|
|
|
|
def test_PhotoshopInfo(self):
|
|
with Image.open("Tests/images/issue_2278.tif") as im:
|
|
self.assertEqual(len(im.tag_v2[34377]), 1)
|
|
self.assertIsInstance(im.tag_v2[34377][0], bytes)
|
|
out = self.tempfile("temp.tiff")
|
|
im.save(out)
|
|
with Image.open(out) as reloaded:
|
|
self.assertEqual(len(reloaded.tag_v2[34377]), 1)
|
|
self.assertIsInstance(reloaded.tag_v2[34377][0], bytes)
|
|
|
|
def test_too_many_entries(self):
|
|
ifd = TiffImagePlugin.ImageFileDirectory_v2()
|
|
|
|
# 277: ("SamplesPerPixel", SHORT, 1),
|
|
ifd._tagdata[277] = struct.pack("hh", 4, 4)
|
|
ifd.tagtype[277] = TiffTags.SHORT
|
|
|
|
# Should not raise ValueError.
|
|
pytest.warns(UserWarning, lambda: ifd[277])
|