mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-11-14 05:36:48 +03:00
584 lines
19 KiB
Python
584 lines
19 KiB
Python
from __future__ import print_function
|
|
from helper import unittest, PillowTestCase, hopper, py3
|
|
|
|
from ctypes import c_float
|
|
import io
|
|
import logging
|
|
import itertools
|
|
import os
|
|
|
|
from PIL import Image, TiffImagePlugin, TiffTags
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class LibTiffTestCase(PillowTestCase):
|
|
|
|
def setUp(self):
|
|
codecs = dir(Image.core)
|
|
|
|
if "libtiff_encoder" not in codecs or "libtiff_decoder" not in codecs:
|
|
self.skipTest("tiff support not available")
|
|
|
|
def _assert_noerr(self, im):
|
|
"""Helper tests that assert basic sanity about the g4 tiff reading"""
|
|
# 1 bit
|
|
self.assertEqual(im.mode, "1")
|
|
|
|
# Does the data actually load
|
|
im.load()
|
|
im.getdata()
|
|
|
|
try:
|
|
self.assertEqual(im._compression, 'group4')
|
|
except:
|
|
print("No _compression")
|
|
print(dir(im))
|
|
|
|
# can we write it back out, in a different form.
|
|
out = self.tempfile("temp.png")
|
|
im.save(out)
|
|
|
|
out_bytes = io.BytesIO()
|
|
im.save(out_bytes, format='tiff', compression='group4')
|
|
|
|
|
|
class TestFileLibTiff(LibTiffTestCase):
|
|
|
|
def test_g4_tiff(self):
|
|
"""Test the ordinary file path load path"""
|
|
|
|
test_file = "Tests/images/hopper_g4_500.tif"
|
|
im = Image.open(test_file)
|
|
|
|
self.assertEqual(im.size, (500, 500))
|
|
self._assert_noerr(im)
|
|
|
|
def test_g4_large(self):
|
|
test_file = "Tests/images/pport_g4.tif"
|
|
im = Image.open(test_file)
|
|
self._assert_noerr(im)
|
|
|
|
def test_g4_tiff_file(self):
|
|
"""Testing the string load path"""
|
|
|
|
test_file = "Tests/images/hopper_g4_500.tif"
|
|
with open(test_file, 'rb') as f:
|
|
im = Image.open(f)
|
|
|
|
self.assertEqual(im.size, (500, 500))
|
|
self._assert_noerr(im)
|
|
|
|
def test_g4_tiff_bytesio(self):
|
|
"""Testing the stringio loading code path"""
|
|
test_file = "Tests/images/hopper_g4_500.tif"
|
|
s = io.BytesIO()
|
|
with open(test_file, 'rb') as f:
|
|
s.write(f.read())
|
|
s.seek(0)
|
|
im = Image.open(s)
|
|
|
|
self.assertEqual(im.size, (500, 500))
|
|
self._assert_noerr(im)
|
|
|
|
def test_g4_eq_png(self):
|
|
""" Checking that we're actually getting the data that we expect"""
|
|
png = Image.open('Tests/images/hopper_bw_500.png')
|
|
g4 = Image.open('Tests/images/hopper_g4_500.tif')
|
|
|
|
self.assert_image_equal(g4, png)
|
|
|
|
# see https://github.com/python-pillow/Pillow/issues/279
|
|
def test_g4_fillorder_eq_png(self):
|
|
""" Checking that we're actually getting the data that we expect"""
|
|
png = Image.open('Tests/images/g4-fillorder-test.png')
|
|
g4 = Image.open('Tests/images/g4-fillorder-test.tif')
|
|
|
|
self.assert_image_equal(g4, png)
|
|
|
|
def test_g4_write(self):
|
|
"""Checking to see that the saved image is the same as what we wrote"""
|
|
test_file = "Tests/images/hopper_g4_500.tif"
|
|
orig = Image.open(test_file)
|
|
|
|
out = self.tempfile("temp.tif")
|
|
rot = orig.transpose(Image.ROTATE_90)
|
|
self.assertEqual(rot.size, (500, 500))
|
|
rot.save(out)
|
|
|
|
reread = Image.open(out)
|
|
self.assertEqual(reread.size, (500, 500))
|
|
self._assert_noerr(reread)
|
|
self.assert_image_equal(reread, rot)
|
|
self.assertEqual(reread.info['compression'], 'group4')
|
|
|
|
self.assertEqual(reread.info['compression'], orig.info['compression'])
|
|
|
|
self.assertNotEqual(orig.tobytes(), reread.tobytes())
|
|
|
|
def test_adobe_deflate_tiff(self):
|
|
test_file = "Tests/images/tiff_adobe_deflate.tif"
|
|
im = Image.open(test_file)
|
|
|
|
self.assertEqual(im.mode, "RGB")
|
|
self.assertEqual(im.size, (278, 374))
|
|
self.assertEqual(
|
|
im.tile[0][:3], ('tiff_adobe_deflate', (0, 0, 278, 374), 0))
|
|
im.load()
|
|
|
|
def test_write_metadata(self):
|
|
""" Test metadata writing through libtiff """
|
|
for legacy_api in [False, True]:
|
|
img = Image.open('Tests/images/hopper_g4.tif')
|
|
f = self.tempfile('temp.tiff')
|
|
|
|
img.save(f, tiffinfo=img.tag)
|
|
|
|
if legacy_api:
|
|
original = img.tag.named()
|
|
else:
|
|
original = img.tag_v2.named()
|
|
|
|
# PhotometricInterpretation is set from SAVE_INFO,
|
|
# not the original image.
|
|
ignored = ['StripByteCounts', 'RowsPerStrip', 'PageNumber',
|
|
'PhotometricInterpretation']
|
|
|
|
loaded = Image.open(f)
|
|
if legacy_api:
|
|
reloaded = loaded.tag.named()
|
|
else:
|
|
reloaded = loaded.tag_v2.named()
|
|
|
|
for tag, value in itertools.chain(reloaded.items(),
|
|
original.items()):
|
|
if tag not in ignored:
|
|
val = original[tag]
|
|
if tag.endswith('Resolution'):
|
|
if legacy_api:
|
|
self.assertEqual(
|
|
c_float(val[0][0] / val[0][1]).value,
|
|
c_float(value[0][0] / value[0][1]).value,
|
|
msg="%s didn't roundtrip" % tag)
|
|
else:
|
|
self.assertEqual(
|
|
c_float(val).value, c_float(value).value,
|
|
msg="%s didn't roundtrip" % tag)
|
|
else:
|
|
self.assertEqual(
|
|
val, value, msg="%s didn't roundtrip" % tag)
|
|
|
|
# https://github.com/python-pillow/Pillow/issues/1561
|
|
requested_fields = ['StripByteCounts',
|
|
'RowsPerStrip',
|
|
'StripOffsets']
|
|
for field in requested_fields:
|
|
self.assertTrue(field in reloaded,
|
|
"%s not in metadata" % field)
|
|
|
|
def test_additional_metadata(self):
|
|
# these should not crash. Seriously dummy data, most of it doesn't make
|
|
# any sense, so we're running up against limits where we're asking
|
|
# libtiff to do stupid things.
|
|
|
|
# Get the list of the ones that we should be able to write
|
|
|
|
core_items = {tag: info for tag, info in ((s, TiffTags.lookup(s)) for s
|
|
in TiffTags.LIBTIFF_CORE)
|
|
if info.type is not None}
|
|
|
|
# Exclude ones that have special meaning
|
|
# that we're already testing them
|
|
im = Image.open('Tests/images/hopper_g4.tif')
|
|
for tag in im.tag_v2.keys():
|
|
try:
|
|
del(core_items[tag])
|
|
except:
|
|
pass
|
|
|
|
# Type codes:
|
|
# 2: "ascii",
|
|
# 3: "short",
|
|
# 4: "long",
|
|
# 5: "rational",
|
|
# 12: "double",
|
|
# type: dummy value
|
|
values = {2: 'test',
|
|
3: 1,
|
|
4: 2**20,
|
|
5: TiffImagePlugin.IFDRational(100, 1),
|
|
12: 1.05}
|
|
|
|
new_ifd = TiffImagePlugin.ImageFileDirectory_v2()
|
|
for tag, info in core_items.items():
|
|
if info.length == 1:
|
|
new_ifd[tag] = values[info.type]
|
|
if info.length == 0:
|
|
new_ifd[tag] = tuple(values[info.type] for _ in range(3))
|
|
else:
|
|
new_ifd[tag] = tuple(values[info.type] for _ in range(info.length))
|
|
|
|
# Extra samples really doesn't make sense in this application.
|
|
del(new_ifd[338])
|
|
|
|
out = self.tempfile("temp.tif")
|
|
TiffImagePlugin.WRITE_LIBTIFF = True
|
|
|
|
im.save(out, tiffinfo=new_ifd)
|
|
|
|
TiffImagePlugin.WRITE_LIBTIFF = False
|
|
|
|
def test_g3_compression(self):
|
|
i = Image.open('Tests/images/hopper_g4_500.tif')
|
|
out = self.tempfile("temp.tif")
|
|
i.save(out, compression='group3')
|
|
|
|
reread = Image.open(out)
|
|
self.assertEqual(reread.info['compression'], 'group3')
|
|
self.assert_image_equal(reread, i)
|
|
|
|
def test_little_endian(self):
|
|
im = Image.open('Tests/images/16bit.deflate.tif')
|
|
self.assertEqual(im.getpixel((0, 0)), 480)
|
|
self.assertEqual(im.mode, 'I;16')
|
|
|
|
b = im.tobytes()
|
|
# Bytes are in image native order (little endian)
|
|
if py3:
|
|
self.assertEqual(b[0], ord(b'\xe0'))
|
|
self.assertEqual(b[1], ord(b'\x01'))
|
|
else:
|
|
self.assertEqual(b[0], b'\xe0')
|
|
self.assertEqual(b[1], b'\x01')
|
|
|
|
out = self.tempfile("temp.tif")
|
|
# out = "temp.le.tif"
|
|
im.save(out)
|
|
reread = Image.open(out)
|
|
|
|
self.assertEqual(reread.info['compression'], im.info['compression'])
|
|
self.assertEqual(reread.getpixel((0, 0)), 480)
|
|
# UNDONE - libtiff defaults to writing in native endian, so
|
|
# on big endian, we'll get back mode = 'I;16B' here.
|
|
|
|
def test_big_endian(self):
|
|
im = Image.open('Tests/images/16bit.MM.deflate.tif')
|
|
|
|
self.assertEqual(im.getpixel((0, 0)), 480)
|
|
self.assertEqual(im.mode, 'I;16B')
|
|
|
|
b = im.tobytes()
|
|
|
|
# Bytes are in image native order (big endian)
|
|
if py3:
|
|
self.assertEqual(b[0], ord(b'\x01'))
|
|
self.assertEqual(b[1], ord(b'\xe0'))
|
|
else:
|
|
self.assertEqual(b[0], b'\x01')
|
|
self.assertEqual(b[1], b'\xe0')
|
|
|
|
out = self.tempfile("temp.tif")
|
|
im.save(out)
|
|
reread = Image.open(out)
|
|
|
|
self.assertEqual(reread.info['compression'], im.info['compression'])
|
|
self.assertEqual(reread.getpixel((0, 0)), 480)
|
|
|
|
def test_g4_string_info(self):
|
|
"""Tests String data in info directory"""
|
|
test_file = "Tests/images/hopper_g4_500.tif"
|
|
orig = Image.open(test_file)
|
|
|
|
out = self.tempfile("temp.tif")
|
|
|
|
orig.tag[269] = 'temp.tif'
|
|
orig.save(out)
|
|
|
|
reread = Image.open(out)
|
|
self.assertEqual('temp.tif', reread.tag_v2[269])
|
|
self.assertEqual('temp.tif', reread.tag[269][0])
|
|
|
|
def test_12bit_rawmode(self):
|
|
""" Are we generating the same interpretation
|
|
of the image as Imagemagick is? """
|
|
TiffImagePlugin.READ_LIBTIFF = True
|
|
im = Image.open('Tests/images/12bit.cropped.tif')
|
|
im.load()
|
|
TiffImagePlugin.READ_LIBTIFF = False
|
|
# to make the target --
|
|
# convert 12bit.cropped.tif -depth 16 tmp.tif
|
|
# convert tmp.tif -evaluate RightShift 4 12in16bit2.tif
|
|
# imagemagick will auto scale so that a 12bit FFF is 16bit FFF0,
|
|
# so we need to unshift so that the integer values are the same.
|
|
|
|
im2 = Image.open('Tests/images/12in16bit.tif')
|
|
|
|
logger.debug("%s", [img.getpixel((0, idx))
|
|
for img in [im, im2] for idx in range(3)])
|
|
|
|
self.assert_image_equal(im, im2)
|
|
|
|
def test_blur(self):
|
|
# test case from irc, how to do blur on b/w image
|
|
# and save to compressed tif.
|
|
from PIL import ImageFilter
|
|
out = self.tempfile('temp.tif')
|
|
im = Image.open('Tests/images/pport_g4.tif')
|
|
im = im.convert('L')
|
|
|
|
im = im.filter(ImageFilter.GaussianBlur(4))
|
|
im.save(out, compression='tiff_adobe_deflate')
|
|
|
|
im2 = Image.open(out)
|
|
im2.load()
|
|
|
|
self.assert_image_equal(im, im2)
|
|
|
|
def test_compressions(self):
|
|
im = hopper('RGB')
|
|
out = self.tempfile('temp.tif')
|
|
|
|
for compression in ('packbits', 'tiff_lzw'):
|
|
im.save(out, compression=compression)
|
|
im2 = Image.open(out)
|
|
self.assert_image_equal(im, im2)
|
|
|
|
im.save(out, compression='jpeg')
|
|
im2 = Image.open(out)
|
|
self.assert_image_similar(im, im2, 30)
|
|
|
|
def test_cmyk_save(self):
|
|
im = hopper('CMYK')
|
|
out = self.tempfile('temp.tif')
|
|
|
|
im.save(out, compression='tiff_adobe_deflate')
|
|
im2 = Image.open(out)
|
|
self.assert_image_equal(im, im2)
|
|
|
|
def xtest_bw_compression_w_rgb(self):
|
|
""" This test passes, but when running all tests causes a failure due
|
|
to output on stderr from the error thrown by libtiff. We need to
|
|
capture that but not now"""
|
|
|
|
im = hopper('RGB')
|
|
out = self.tempfile('temp.tif')
|
|
|
|
self.assertRaises(
|
|
IOError, lambda: im.save(out, compression='tiff_ccitt'))
|
|
self.assertRaises(IOError, lambda: im.save(out, compression='group3'))
|
|
self.assertRaises(IOError, lambda: 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, lambda: os.fstat(fn))
|
|
im = None # this should force even more closed.
|
|
self.assertRaises(OSError, lambda: os.fstat(fn))
|
|
self.assertRaises(OSError, lambda: os.close(fn))
|
|
|
|
def test_multipage(self):
|
|
# issue #862
|
|
TiffImagePlugin.READ_LIBTIFF = True
|
|
im = Image.open('Tests/images/multipage.tiff')
|
|
# 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
|
|
im = Image.open('Tests/images/multipage.tiff')
|
|
frames = im.n_frames
|
|
self.assertEqual(frames, 3)
|
|
for idx 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
|
|
im = Image.open('Tests/images/hopper.tif')
|
|
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
|
|
im = Image.open(test_file)
|
|
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:
|
|
im = Image.open(group[0])
|
|
self.assertEqual(im.size, (128, 128))
|
|
self.assertEqual(im.mode, "L")
|
|
self.assert_image_similar(im, original, epsilon)
|
|
for file in group[1:]:
|
|
im2 = Image.open(file)
|
|
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)
|
|
|
|
pilim_load = Image.open(buffer_io)
|
|
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
|
|
im = Image.open('Tests/images/rdf.tif')
|
|
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"
|
|
im = Image.open(infile)
|
|
# 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)
|
|
count = im.n_frames
|
|
im.close()
|
|
try:
|
|
os.remove(tmpfile) # Windows PermissionError here!
|
|
except:
|
|
self.fail("Should not get permission error here")
|
|
|
|
def test_read_icc(self):
|
|
with Image.open("Tests/images/hopper.iccprofile.tif") as img:
|
|
icc = img.info.get('icc_profile')
|
|
self.assertNotEqual(icc, None)
|
|
TiffImagePlugin.READ_LIBTIFF = True
|
|
with Image.open("Tests/images/hopper.iccprofile.tif") as img:
|
|
icc_libtiff = img.info.get('icc_profile')
|
|
self.assertNotEqual(icc_libtiff, None)
|
|
TiffImagePlugin.READ_LIBTIFF = False
|
|
self.assertEqual(icc, icc_libtiff)
|
|
|
|
def test_multipage_compression(self):
|
|
im = Image.open('Tests/images/compression.tif')
|
|
|
|
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"
|
|
im = Image.open(infile)
|
|
|
|
# Act / Assert
|
|
# Should not raise UnicodeDecodeError or anything else
|
|
im.save(outfile)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|