mirror of
https://github.com/python-pillow/Pillow.git
synced 2025-10-25 05:01:26 +03:00
1035 lines
35 KiB
Python
1035 lines
35 KiB
Python
from __future__ import annotations
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import os
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import warnings
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from collections.abc import Generator
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from io import BytesIO
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from pathlib import Path
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from types import ModuleType
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import pytest
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from PIL import (
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Image,
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ImageFile,
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JpegImagePlugin,
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TiffImagePlugin,
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UnidentifiedImageError,
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)
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from PIL.TiffImagePlugin import RESOLUTION_UNIT, X_RESOLUTION, Y_RESOLUTION
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from .helper import (
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assert_image_equal,
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assert_image_equal_tofile,
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assert_image_similar,
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assert_image_similar_tofile,
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hopper,
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is_pypy,
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is_win32,
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)
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ElementTree: ModuleType | None
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try:
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from defusedxml import ElementTree
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except ImportError:
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ElementTree = None
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class TestFileTiff:
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def test_sanity(self, tmp_path: Path) -> None:
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filename = tmp_path / "temp.tif"
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hopper("RGB").save(filename)
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with Image.open(filename) as im:
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im.load()
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assert im.mode == "RGB"
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assert im.size == (128, 128)
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assert im.format == "TIFF"
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hopper("1").save(filename)
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with Image.open(filename):
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pass
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hopper("L").save(filename)
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with Image.open(filename):
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pass
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hopper("P").save(filename)
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with Image.open(filename):
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pass
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hopper("RGB").save(filename)
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with Image.open(filename):
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pass
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hopper("I").save(filename)
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with Image.open(filename):
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pass
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@pytest.mark.skipif(is_pypy(), reason="Requires CPython")
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def test_unclosed_file(self) -> None:
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def open_test_image() -> None:
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im = Image.open("Tests/images/multipage.tiff")
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im.load()
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with pytest.warns(ResourceWarning):
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open_test_image()
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def test_closed_file(self) -> None:
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with warnings.catch_warnings():
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warnings.simplefilter("error")
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im = Image.open("Tests/images/multipage.tiff")
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im.load()
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im.close()
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def test_seek_after_close(self) -> None:
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im = Image.open("Tests/images/multipage.tiff")
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assert isinstance(im, TiffImagePlugin.TiffImageFile)
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im.close()
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with pytest.raises(ValueError):
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im.n_frames
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with pytest.raises(ValueError):
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im.seek(1)
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def test_context_manager(self) -> None:
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with warnings.catch_warnings():
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warnings.simplefilter("error")
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with Image.open("Tests/images/multipage.tiff") as im:
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im.load()
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def test_mac_tiff(self) -> None:
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# Read RGBa images from macOS [@PIL136]
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filename = "Tests/images/pil136.tiff"
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with Image.open(filename) as im:
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assert im.mode == "RGBA"
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assert im.size == (55, 43)
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assert im.tile == [("raw", (0, 0, 55, 43), 8, ("RGBa", 0, 1))]
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im.load()
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assert_image_similar_tofile(im, "Tests/images/pil136.png", 1)
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def test_bigtiff(self, tmp_path: Path) -> None:
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with Image.open("Tests/images/hopper_bigtiff.tif") as im:
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assert_image_equal_tofile(im, "Tests/images/hopper.tif")
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with Image.open("Tests/images/hopper_bigtiff.tif") as im:
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outfile = tmp_path / "temp.tif"
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assert isinstance(im, TiffImagePlugin.TiffImageFile)
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im.save(outfile, save_all=True, append_images=[im], tiffinfo=im.tag_v2)
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def test_bigtiff_save(self, tmp_path: Path) -> None:
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outfile = tmp_path / "temp.tif"
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im = hopper()
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im.save(outfile, big_tiff=True)
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with Image.open(outfile) as reloaded:
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assert isinstance(reloaded, TiffImagePlugin.TiffImageFile)
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assert reloaded.tag_v2._bigtiff is True
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im.save(outfile, save_all=True, append_images=[im], big_tiff=True)
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with Image.open(outfile) as reloaded:
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assert isinstance(reloaded, TiffImagePlugin.TiffImageFile)
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assert reloaded.tag_v2._bigtiff is True
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def test_seek_too_large(self) -> None:
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with pytest.raises(ValueError, match="Unable to seek to frame"):
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Image.open("Tests/images/seek_too_large.tif")
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def test_set_legacy_api(self) -> None:
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ifd = TiffImagePlugin.ImageFileDirectory_v2()
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with pytest.raises(Exception, match="Not allowing setting of legacy api"):
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ifd.legacy_api = False
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def test_xyres_tiff(self) -> None:
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filename = "Tests/images/pil168.tif"
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with Image.open(filename) as im:
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assert isinstance(im, TiffImagePlugin.TiffImageFile)
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# legacy api
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assert isinstance(im.tag[X_RESOLUTION][0], tuple)
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assert isinstance(im.tag[Y_RESOLUTION][0], tuple)
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# v2 api
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assert isinstance(im.tag_v2[X_RESOLUTION], TiffImagePlugin.IFDRational)
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assert isinstance(im.tag_v2[Y_RESOLUTION], TiffImagePlugin.IFDRational)
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assert im.info["dpi"] == (72.0, 72.0)
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def test_xyres_fallback_tiff(self) -> None:
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filename = "Tests/images/compression.tif"
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with Image.open(filename) as im:
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assert isinstance(im, TiffImagePlugin.TiffImageFile)
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# v2 api
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assert isinstance(im.tag_v2[X_RESOLUTION], TiffImagePlugin.IFDRational)
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assert isinstance(im.tag_v2[Y_RESOLUTION], TiffImagePlugin.IFDRational)
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with pytest.raises(KeyError):
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im.tag_v2[RESOLUTION_UNIT]
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# Legacy.
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assert im.info["resolution"] == (100.0, 100.0)
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# Fallback "inch".
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assert im.info["dpi"] == (100.0, 100.0)
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def test_int_resolution(self) -> None:
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filename = "Tests/images/pil168.tif"
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with Image.open(filename) as im:
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assert isinstance(im, TiffImagePlugin.TiffImageFile)
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# Try to read a file where X,Y_RESOLUTION are ints
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im.tag_v2[X_RESOLUTION] = 71
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im.tag_v2[Y_RESOLUTION] = 71
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im._setup()
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assert im.info["dpi"] == (71.0, 71.0)
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@pytest.mark.parametrize(
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"resolution_unit, dpi",
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[(None, 72.8), (2, 72.8), (3, 184.912)],
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)
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def test_load_float_dpi(self, resolution_unit: int | None, dpi: float) -> None:
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with Image.open(
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"Tests/images/hopper_float_dpi_" + str(resolution_unit) + ".tif"
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) as im:
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assert isinstance(im, TiffImagePlugin.TiffImageFile)
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assert im.tag_v2.get(RESOLUTION_UNIT) == resolution_unit
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assert im.info["dpi"] == (dpi, dpi)
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def test_save_float_dpi(self, tmp_path: Path) -> None:
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outfile = tmp_path / "temp.tif"
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with Image.open("Tests/images/hopper.tif") as im:
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dpi = (72.2, 72.2)
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im.save(outfile, dpi=dpi)
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with Image.open(outfile) as reloaded:
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assert reloaded.info["dpi"] == dpi
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def test_save_setting_missing_resolution(self) -> None:
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b = BytesIO()
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with Image.open("Tests/images/10ct_32bit_128.tiff") as im:
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im.save(b, format="tiff", resolution=123.45)
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with Image.open(b) as im:
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assert isinstance(im, TiffImagePlugin.TiffImageFile)
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assert im.tag_v2[X_RESOLUTION] == 123.45
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assert im.tag_v2[Y_RESOLUTION] == 123.45
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def test_invalid_file(self) -> None:
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invalid_file = "Tests/images/flower.jpg"
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with pytest.raises(SyntaxError):
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TiffImagePlugin.TiffImageFile(invalid_file)
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TiffImagePlugin.PREFIXES.append(b"\xff\xd8\xff\xe0")
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with pytest.raises(SyntaxError):
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TiffImagePlugin.TiffImageFile(invalid_file)
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TiffImagePlugin.PREFIXES.pop()
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def test_bad_exif(self) -> None:
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with Image.open("Tests/images/hopper_bad_exif.jpg") as im:
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assert isinstance(im, JpegImagePlugin.JpegImageFile)
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# Should not raise struct.error.
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with pytest.warns(UserWarning):
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im._getexif()
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def test_save_rgba(self, tmp_path: Path) -> None:
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im = hopper("RGBA")
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outfile = tmp_path / "temp.tif"
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im.save(outfile)
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def test_save_unsupported_mode(self, tmp_path: Path) -> None:
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im = hopper("HSV")
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outfile = tmp_path / "temp.tif"
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with pytest.raises(OSError):
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im.save(outfile)
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def test_8bit_s(self) -> None:
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with Image.open("Tests/images/8bit.s.tif") as im:
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im.load()
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assert im.mode == "L"
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assert im.getpixel((50, 50)) == 184
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def test_little_endian(self) -> None:
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with Image.open("Tests/images/16bit.cropped.tif") as im:
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assert im.getpixel((0, 0)) == 480
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assert 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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assert b[0] == ord(b"\xe0")
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assert b[1] == ord(b"\x01")
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def test_big_endian(self) -> None:
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with Image.open("Tests/images/16bit.MM.cropped.tif") as im:
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assert im.getpixel((0, 0)) == 480
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assert 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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assert b[0] == ord(b"\x01")
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assert b[1] == ord(b"\xe0")
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def test_16bit_r(self) -> None:
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with Image.open("Tests/images/16bit.r.tif") as im:
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assert im.getpixel((0, 0)) == 480
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assert im.mode == "I;16"
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b = im.tobytes()
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assert b[0] == ord(b"\xe0")
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assert b[1] == ord(b"\x01")
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def test_16bit_s(self) -> None:
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with Image.open("Tests/images/16bit.s.tif") as im:
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im.load()
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assert im.mode == "I"
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assert im.getpixel((0, 0)) == 32767
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assert im.getpixel((0, 1)) == 0
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def test_12bit_rawmode(self) -> None:
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"""Are we generating the same interpretation
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of the image as Imagemagick is?"""
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with Image.open("Tests/images/12bit.cropped.tif") as im:
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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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assert_image_equal_tofile(im, "Tests/images/12in16bit.tif")
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def test_32bit_float(self) -> None:
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# Issue 614, specific 32-bit float format
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path = "Tests/images/10ct_32bit_128.tiff"
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with Image.open(path) as im:
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im.load()
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assert im.getpixel((0, 0)) == -0.4526388943195343
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assert im.getextrema() == (-3.140936851501465, 3.140684127807617)
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def test_unknown_pixel_mode(self) -> None:
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with pytest.raises(OSError):
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with Image.open("Tests/images/hopper_unknown_pixel_mode.tif"):
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pass
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@pytest.mark.parametrize(
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"path, n_frames",
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(
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("Tests/images/multipage-lastframe.tif", 1),
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("Tests/images/multipage.tiff", 3),
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),
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)
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def test_n_frames(self, path: str, n_frames: int) -> None:
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with Image.open(path) as im:
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assert isinstance(im, TiffImagePlugin.TiffImageFile)
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assert im.n_frames == n_frames
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assert im.is_animated == (n_frames != 1)
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def test_eoferror(self) -> None:
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with Image.open("Tests/images/multipage-lastframe.tif") as im:
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assert isinstance(im, TiffImagePlugin.TiffImageFile)
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n_frames = im.n_frames
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# Test seeking past the last frame
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with pytest.raises(EOFError):
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im.seek(n_frames)
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assert im.tell() < n_frames
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# Test that seeking to the last frame does not raise an error
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im.seek(n_frames - 1)
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def test_multipage(self) -> None:
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# issue #862
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with Image.open("Tests/images/multipage.tiff") as im:
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# file is a multipage tiff: 10x10 green, 10x10 red, 20x20 blue
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im.seek(0)
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assert im.size == (10, 10)
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assert im.convert("RGB").getpixel((0, 0)) == (0, 128, 0)
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im.seek(1)
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im.load()
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assert im.size == (10, 10)
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assert im.convert("RGB").getpixel((0, 0)) == (255, 0, 0)
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im.seek(0)
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im.load()
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assert im.size == (10, 10)
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assert im.convert("RGB").getpixel((0, 0)) == (0, 128, 0)
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im.seek(2)
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im.load()
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assert im.size == (20, 20)
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assert im.convert("RGB").getpixel((0, 0)) == (0, 0, 255)
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def test_multipage_last_frame(self) -> None:
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with Image.open("Tests/images/multipage-lastframe.tif") as im:
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im.load()
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assert im.size == (20, 20)
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assert im.convert("RGB").getpixel((0, 0)) == (0, 0, 255)
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def test_frame_order(self) -> None:
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# A frame can't progress to itself after reading
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with Image.open("Tests/images/multipage_single_frame_loop.tiff") as im:
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assert isinstance(im, TiffImagePlugin.TiffImageFile)
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assert im.n_frames == 1
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# A frame can't progress to a frame that has already been read
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with Image.open("Tests/images/multipage_multiple_frame_loop.tiff") as im:
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assert isinstance(im, TiffImagePlugin.TiffImageFile)
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assert im.n_frames == 2
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# Frames don't have to be in sequence
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with Image.open("Tests/images/multipage_out_of_order.tiff") as im:
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assert isinstance(im, TiffImagePlugin.TiffImageFile)
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assert im.n_frames == 3
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|
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def test___str__(self) -> None:
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filename = "Tests/images/pil136.tiff"
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with Image.open(filename) as im:
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assert isinstance(im, TiffImagePlugin.TiffImageFile)
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# Act
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ret = str(im.ifd)
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# Assert
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assert isinstance(ret, str)
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|
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def test_dict(self) -> None:
|
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# Arrange
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filename = "Tests/images/pil136.tiff"
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with Image.open(filename) as im:
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assert isinstance(im, TiffImagePlugin.TiffImageFile)
|
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|
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# v2 interface
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v2_tags = {
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256: 55,
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257: 43,
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258: (8, 8, 8, 8),
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259: 1,
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262: 2,
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296: 2,
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273: (8,),
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338: (1,),
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277: 4,
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279: (9460,),
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282: 72.0,
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283: 72.0,
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284: 1,
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}
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assert dict(im.tag_v2) == v2_tags
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# legacy interface
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legacy_tags = {
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256: (55,),
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257: (43,),
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258: (8, 8, 8, 8),
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259: (1,),
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262: (2,),
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296: (2,),
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273: (8,),
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338: (1,),
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277: (4,),
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279: (9460,),
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282: ((720000, 10000),),
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283: ((720000, 10000),),
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284: (1,),
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}
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assert dict(im.tag) == legacy_tags
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|
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def test__delitem__(self) -> None:
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filename = "Tests/images/pil136.tiff"
|
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with Image.open(filename) as im:
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assert isinstance(im, TiffImagePlugin.TiffImageFile)
|
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len_before = len(dict(im.ifd))
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del im.ifd[256]
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len_after = len(dict(im.ifd))
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assert len_before == len_after + 1
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|
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@pytest.mark.parametrize("legacy_api", (False, True))
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def test_load_byte(self, legacy_api: bool) -> None:
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ifd = TiffImagePlugin.ImageFileDirectory_v2()
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data = b"abc"
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ret = ifd.load_byte(data, legacy_api)
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assert ret == b"abc"
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def test_load_string(self) -> None:
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ifd = TiffImagePlugin.ImageFileDirectory_v2()
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data = b"abc\0"
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ret = ifd.load_string(data, False)
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assert ret == "abc"
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|
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def test_load_float(self) -> None:
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ifd = TiffImagePlugin.ImageFileDirectory_v2()
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data = b"abcdabcd"
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ret = getattr(ifd, "load_float")(data, False)
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assert ret == (1.6777999408082104e22, 1.6777999408082104e22)
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|
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def test_load_double(self) -> None:
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ifd = TiffImagePlugin.ImageFileDirectory_v2()
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data = b"abcdefghabcdefgh"
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ret = getattr(ifd, "load_double")(data, False)
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assert ret == (8.540883223036124e194, 8.540883223036124e194)
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|
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def test_ifd_tag_type(self) -> None:
|
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with Image.open("Tests/images/ifd_tag_type.tiff") as im:
|
|
assert isinstance(im, TiffImagePlugin.TiffImageFile)
|
|
assert 0x8825 in im.tag_v2
|
|
|
|
def test_exif(self, tmp_path: Path) -> None:
|
|
def check_exif(exif: Image.Exif) -> None:
|
|
assert sorted(exif.keys()) == [
|
|
256,
|
|
257,
|
|
258,
|
|
259,
|
|
262,
|
|
271,
|
|
272,
|
|
273,
|
|
277,
|
|
278,
|
|
279,
|
|
282,
|
|
283,
|
|
284,
|
|
296,
|
|
297,
|
|
305,
|
|
339,
|
|
700,
|
|
34665,
|
|
34853,
|
|
50735,
|
|
]
|
|
assert exif[256] == 640
|
|
assert exif[271] == "FLIR"
|
|
|
|
gps = exif.get_ifd(0x8825)
|
|
assert list(gps.keys()) == [0, 1, 2, 3, 4, 5, 6, 18]
|
|
assert gps[0] == b"\x03\x02\x00\x00"
|
|
assert gps[18] == "WGS-84"
|
|
|
|
outfile = tmp_path / "temp.tif"
|
|
with Image.open("Tests/images/ifd_tag_type.tiff") as im:
|
|
exif = im.getexif()
|
|
check_exif(exif)
|
|
|
|
im.save(outfile, exif=exif)
|
|
|
|
outfile2 = tmp_path / "temp2.tif"
|
|
with Image.open(outfile) as im:
|
|
exif = im.getexif()
|
|
check_exif(exif)
|
|
|
|
im.save(outfile2, exif=exif.tobytes())
|
|
|
|
with Image.open(outfile2) as im:
|
|
exif = im.getexif()
|
|
check_exif(exif)
|
|
|
|
def test_modify_exif(self, tmp_path: Path) -> None:
|
|
outfile = tmp_path / "temp.tif"
|
|
with Image.open("Tests/images/ifd_tag_type.tiff") as im:
|
|
exif = im.getexif()
|
|
exif[264] = 100
|
|
|
|
im.save(outfile, exif=exif)
|
|
|
|
with Image.open(outfile) as im:
|
|
exif = im.getexif()
|
|
assert exif[264] == 100
|
|
|
|
def test_reload_exif_after_seek(self) -> None:
|
|
with Image.open("Tests/images/multipage.tiff") as im:
|
|
exif = im.getexif()
|
|
del exif[256]
|
|
im.seek(1)
|
|
|
|
assert 256 in exif
|
|
|
|
def test_exif_frames(self) -> None:
|
|
# Test that EXIF data can change across frames
|
|
with Image.open("Tests/images/g4-multi.tiff") as im:
|
|
assert im.getexif()[273] == (328, 815)
|
|
|
|
im.seek(1)
|
|
assert im.getexif()[273] == (1408, 1907)
|
|
|
|
@pytest.mark.parametrize("mode", ("1", "L"))
|
|
def test_photometric(self, mode: str, tmp_path: Path) -> None:
|
|
filename = tmp_path / "temp.tif"
|
|
im = hopper(mode)
|
|
im.save(filename, tiffinfo={262: 0})
|
|
with Image.open(filename) as reloaded:
|
|
assert isinstance(reloaded, TiffImagePlugin.TiffImageFile)
|
|
assert reloaded.tag_v2[262] == 0
|
|
assert_image_equal(im, reloaded)
|
|
|
|
def test_seek(self) -> None:
|
|
filename = "Tests/images/pil136.tiff"
|
|
with Image.open(filename) as im:
|
|
im.seek(0)
|
|
assert im.tell() == 0
|
|
|
|
def test_seek_eof(self) -> None:
|
|
filename = "Tests/images/pil136.tiff"
|
|
with Image.open(filename) as im:
|
|
assert im.tell() == 0
|
|
with pytest.raises(EOFError):
|
|
im.seek(-1)
|
|
with pytest.raises(EOFError):
|
|
im.seek(1)
|
|
|
|
def test__limit_rational_int(self) -> None:
|
|
from PIL.TiffImagePlugin import _limit_rational
|
|
|
|
value = 34
|
|
ret = _limit_rational(value, 65536)
|
|
assert ret == (34, 1)
|
|
|
|
def test__limit_rational_float(self) -> None:
|
|
from PIL.TiffImagePlugin import _limit_rational
|
|
|
|
value = 22.3
|
|
ret = _limit_rational(value, 65536)
|
|
assert ret == (223, 10)
|
|
|
|
def test_4bit(self) -> None:
|
|
test_file = "Tests/images/hopper_gray_4bpp.tif"
|
|
original = hopper("L")
|
|
with Image.open(test_file) as im:
|
|
assert im.size == (128, 128)
|
|
assert im.mode == "L"
|
|
assert_image_similar(im, original, 7.3)
|
|
|
|
def test_gray_semibyte_per_pixel(self) -> None:
|
|
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:
|
|
assert im.size == (128, 128)
|
|
assert im.mode == "L"
|
|
assert_image_similar(im, original, epsilon)
|
|
for file in group[1:]:
|
|
with Image.open(file) as im2:
|
|
assert im2.size == (128, 128)
|
|
assert im2.mode == "L"
|
|
assert_image_equal(im, im2)
|
|
|
|
def test_with_underscores(self, tmp_path: Path) -> None:
|
|
kwargs = {"resolution_unit": "inch", "x_resolution": 72, "y_resolution": 36}
|
|
filename = tmp_path / "temp.tif"
|
|
hopper("RGB").save(filename, "TIFF", **kwargs)
|
|
with Image.open(filename) as im:
|
|
assert isinstance(im, TiffImagePlugin.TiffImageFile)
|
|
|
|
# legacy interface
|
|
assert im.tag[X_RESOLUTION][0][0] == 72
|
|
assert im.tag[Y_RESOLUTION][0][0] == 36
|
|
|
|
# v2 interface
|
|
assert im.tag_v2[X_RESOLUTION] == 72
|
|
assert im.tag_v2[Y_RESOLUTION] == 36
|
|
|
|
def test_roundtrip_tiff_uint16(self, tmp_path: Path) -> None:
|
|
# Test an image of all '0' values
|
|
pixel_value = 0x1234
|
|
infile = "Tests/images/uint16_1_4660.tif"
|
|
with Image.open(infile) as im:
|
|
assert im.getpixel((0, 0)) == pixel_value
|
|
|
|
tmpfile = tmp_path / "temp.tif"
|
|
im.save(tmpfile)
|
|
|
|
assert_image_equal_tofile(im, tmpfile)
|
|
|
|
def test_iptc(self, tmp_path: Path) -> None:
|
|
# Do not preserve IPTC_NAA_CHUNK by default if type is LONG
|
|
outfile = tmp_path / "temp.tif"
|
|
with Image.open("Tests/images/hopper.tif") as im:
|
|
im.load()
|
|
assert isinstance(im, TiffImagePlugin.TiffImageFile)
|
|
ifd = TiffImagePlugin.ImageFileDirectory_v2()
|
|
ifd[33723] = 1
|
|
ifd.tagtype[33723] = 4
|
|
im.tag_v2 = ifd
|
|
im.save(outfile)
|
|
|
|
with Image.open(outfile) as im:
|
|
assert isinstance(im, TiffImagePlugin.TiffImageFile)
|
|
assert 33723 not in im.tag_v2
|
|
|
|
def test_rowsperstrip(self, tmp_path: Path) -> None:
|
|
outfile = tmp_path / "temp.tif"
|
|
im = hopper()
|
|
im.save(outfile, tiffinfo={278: 256})
|
|
|
|
with Image.open(outfile) as im:
|
|
assert isinstance(im, TiffImagePlugin.TiffImageFile)
|
|
assert im.tag_v2[278] == 256
|
|
|
|
im = hopper()
|
|
im2 = Image.new("L", (128, 128))
|
|
im2.encoderinfo = {"tiffinfo": {278: 256}}
|
|
im.save(outfile, save_all=True, append_images=[im2])
|
|
|
|
with Image.open(outfile) as im:
|
|
assert isinstance(im, TiffImagePlugin.TiffImageFile)
|
|
assert im.tag_v2[278] == 128
|
|
|
|
im.seek(1)
|
|
assert im.tag_v2[278] == 256
|
|
|
|
def test_strip_raw(self) -> None:
|
|
infile = "Tests/images/tiff_strip_raw.tif"
|
|
with Image.open(infile) as im:
|
|
assert_image_equal_tofile(im, "Tests/images/tiff_adobe_deflate.png")
|
|
|
|
def test_strip_planar_raw(self) -> None:
|
|
# gdal_translate -of GTiff -co INTERLEAVE=BAND \
|
|
# tiff_strip_raw.tif tiff_strip_planar_raw.tiff
|
|
infile = "Tests/images/tiff_strip_planar_raw.tif"
|
|
with Image.open(infile) as im:
|
|
assert_image_equal_tofile(im, "Tests/images/tiff_adobe_deflate.png")
|
|
|
|
def test_strip_planar_raw_with_overviews(self) -> None:
|
|
# gdaladdo tiff_strip_planar_raw2.tif 2 4 8 16
|
|
infile = "Tests/images/tiff_strip_planar_raw_with_overviews.tif"
|
|
with Image.open(infile) as im:
|
|
assert_image_equal_tofile(im, "Tests/images/tiff_adobe_deflate.png")
|
|
|
|
def test_tiled_planar_raw(self) -> None:
|
|
# gdal_translate -of GTiff -co TILED=YES -co BLOCKXSIZE=32 \
|
|
# -co BLOCKYSIZE=32 -co INTERLEAVE=BAND \
|
|
# tiff_tiled_raw.tif tiff_tiled_planar_raw.tiff
|
|
infile = "Tests/images/tiff_tiled_planar_raw.tif"
|
|
with Image.open(infile) as im:
|
|
assert_image_equal_tofile(im, "Tests/images/tiff_adobe_deflate.png")
|
|
|
|
def test_planar_configuration_save(self, tmp_path: Path) -> None:
|
|
infile = "Tests/images/tiff_tiled_planar_raw.tif"
|
|
with Image.open(infile) as im:
|
|
assert isinstance(im, TiffImagePlugin.TiffImageFile)
|
|
assert im._planar_configuration == 2
|
|
|
|
outfile = tmp_path / "temp.tif"
|
|
im.save(outfile)
|
|
|
|
with Image.open(outfile) as reloaded:
|
|
assert_image_equal_tofile(reloaded, infile)
|
|
|
|
def test_invalid_tiled_dimensions(self) -> None:
|
|
with open("Tests/images/tiff_tiled_planar_raw.tif", "rb") as fp:
|
|
data = fp.read()
|
|
b = BytesIO(data[:144] + b"\x02" + data[145:])
|
|
with pytest.raises(ValueError):
|
|
Image.open(b)
|
|
|
|
@pytest.mark.parametrize("mode", ("P", "PA"))
|
|
def test_palette(self, mode: str, tmp_path: Path) -> None:
|
|
outfile = tmp_path / "temp.tif"
|
|
|
|
im = hopper(mode)
|
|
im.save(outfile)
|
|
|
|
with Image.open(outfile) as reloaded:
|
|
assert_image_equal(im.convert("RGB"), reloaded.convert("RGB"))
|
|
|
|
def test_tiff_save_all(self) -> None:
|
|
mp = BytesIO()
|
|
with Image.open("Tests/images/multipage.tiff") as im:
|
|
im.save(mp, format="tiff", save_all=True)
|
|
|
|
mp.seek(0, os.SEEK_SET)
|
|
with Image.open(mp) as im:
|
|
assert isinstance(im, TiffImagePlugin.TiffImageFile)
|
|
assert im.n_frames == 3
|
|
|
|
# Test appending images
|
|
mp = BytesIO()
|
|
im = Image.new("RGB", (100, 100), "#f00")
|
|
ims = [Image.new("RGB", (100, 100), color) for color in ["#0f0", "#00f"]]
|
|
im.copy().save(mp, format="TIFF", save_all=True, append_images=ims)
|
|
|
|
mp.seek(0, os.SEEK_SET)
|
|
with Image.open(mp) as reread:
|
|
assert isinstance(reread, TiffImagePlugin.TiffImageFile)
|
|
assert reread.n_frames == 3
|
|
|
|
# Test appending using a generator
|
|
def im_generator(ims: list[Image.Image]) -> Generator[Image.Image, None, None]:
|
|
yield from ims
|
|
|
|
mp = BytesIO()
|
|
im.save(mp, format="TIFF", save_all=True, append_images=im_generator(ims))
|
|
|
|
mp.seek(0, os.SEEK_SET)
|
|
with Image.open(mp) as reread:
|
|
assert isinstance(reread, TiffImagePlugin.TiffImageFile)
|
|
assert reread.n_frames == 3
|
|
|
|
def test_fixoffsets(self) -> None:
|
|
b = BytesIO(b"II\x2a\x00\x00\x00\x00\x00")
|
|
with TiffImagePlugin.AppendingTiffWriter(b) as a:
|
|
b.seek(0)
|
|
a.fixOffsets(1, isShort=True)
|
|
|
|
b.seek(0)
|
|
a.fixOffsets(1, isLong=True)
|
|
|
|
# Neither short nor long
|
|
b.seek(0)
|
|
with pytest.raises(RuntimeError):
|
|
a.fixOffsets(1)
|
|
|
|
b = BytesIO(b"II\x2a\x00\x00\x00\x00\x00")
|
|
with TiffImagePlugin.AppendingTiffWriter(b) as a:
|
|
a.offsetOfNewPage = 2**16
|
|
|
|
b.seek(0)
|
|
a.fixOffsets(1, isShort=True)
|
|
|
|
b = BytesIO(b"II\x2b\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00")
|
|
with TiffImagePlugin.AppendingTiffWriter(b) as a:
|
|
a.offsetOfNewPage = 2**32
|
|
|
|
b.seek(0)
|
|
a.fixOffsets(1, isShort=True)
|
|
|
|
b.seek(0)
|
|
a.fixOffsets(1, isLong=True)
|
|
|
|
def test_appending_tiff_writer_writelong(self) -> None:
|
|
data = b"II\x2a\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
|
|
b = BytesIO(data)
|
|
with TiffImagePlugin.AppendingTiffWriter(b) as a:
|
|
a.seek(-4, os.SEEK_CUR)
|
|
a.writeLong(2**32 - 1)
|
|
assert b.getvalue() == data[:-4] + b"\xff\xff\xff\xff"
|
|
|
|
def test_appending_tiff_writer_rewritelastshorttolong(self) -> None:
|
|
data = b"II\x2a\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
|
|
b = BytesIO(data)
|
|
with TiffImagePlugin.AppendingTiffWriter(b) as a:
|
|
a.seek(-2, os.SEEK_CUR)
|
|
a.rewriteLastShortToLong(2**32 - 1)
|
|
assert b.getvalue() == data[:-4] + b"\xff\xff\xff\xff"
|
|
|
|
def test_saving_icc_profile(self, tmp_path: Path) -> None:
|
|
# Tests saving TIFF with icc_profile set.
|
|
# At the time of writing this will only work for non-compressed tiffs
|
|
# as libtiff does not support embedded ICC profiles,
|
|
# ImageFile._save(..) however does.
|
|
im = Image.new("RGB", (1, 1))
|
|
im.info["icc_profile"] = "Dummy value"
|
|
|
|
# Try save-load round trip to make sure both handle icc_profile.
|
|
tmpfile = tmp_path / "temp.tif"
|
|
im.save(tmpfile, "TIFF", compression="raw")
|
|
with Image.open(tmpfile) as reloaded:
|
|
assert b"Dummy value" == reloaded.info["icc_profile"]
|
|
|
|
def test_save_icc_profile(self, tmp_path: Path) -> None:
|
|
im = hopper()
|
|
assert "icc_profile" not in im.info
|
|
|
|
outfile = tmp_path / "temp.tif"
|
|
icc_profile = b"Dummy value"
|
|
im.save(outfile, icc_profile=icc_profile)
|
|
|
|
with Image.open(outfile) as reloaded:
|
|
assert reloaded.info["icc_profile"] == icc_profile
|
|
|
|
def test_save_bmp_compression(self, tmp_path: Path) -> None:
|
|
with Image.open("Tests/images/hopper.bmp") as im:
|
|
assert im.info["compression"] == 0
|
|
|
|
outfile = tmp_path / "temp.tif"
|
|
im.save(outfile)
|
|
|
|
def test_discard_icc_profile(self, tmp_path: Path) -> None:
|
|
outfile = tmp_path / "temp.tif"
|
|
|
|
with Image.open("Tests/images/icc_profile.png") as im:
|
|
assert "icc_profile" in im.info
|
|
|
|
im.save(outfile, icc_profile=None)
|
|
|
|
with Image.open(outfile) as reloaded:
|
|
assert "icc_profile" not in reloaded.info
|
|
|
|
def test_getxmp(self) -> None:
|
|
with Image.open("Tests/images/lab.tif") as im:
|
|
if ElementTree is None:
|
|
with pytest.warns(
|
|
UserWarning,
|
|
match="XMP data cannot be read without defusedxml dependency",
|
|
):
|
|
assert im.getxmp() == {}
|
|
else:
|
|
assert "xmp" in im.info
|
|
xmp = im.getxmp()
|
|
|
|
description = xmp["xmpmeta"]["RDF"]["Description"]
|
|
assert description[0]["format"] == "image/tiff"
|
|
assert description[3]["BitsPerSample"]["Seq"]["li"] == ["8", "8", "8"]
|
|
|
|
def test_get_photoshop_blocks(self) -> None:
|
|
with Image.open("Tests/images/lab.tif") as im:
|
|
assert isinstance(im, TiffImagePlugin.TiffImageFile)
|
|
assert list(im.get_photoshop_blocks().keys()) == [
|
|
1061,
|
|
1002,
|
|
1005,
|
|
1062,
|
|
1037,
|
|
1049,
|
|
1011,
|
|
1034,
|
|
10000,
|
|
1013,
|
|
1016,
|
|
1032,
|
|
1054,
|
|
1050,
|
|
1064,
|
|
1041,
|
|
1044,
|
|
1036,
|
|
1057,
|
|
4000,
|
|
4001,
|
|
]
|
|
|
|
def test_tiff_chunks(self, tmp_path: Path) -> None:
|
|
tmpfile = tmp_path / "temp.tif"
|
|
|
|
im = hopper()
|
|
with open(tmpfile, "wb") as fp:
|
|
for y in range(0, 128, 32):
|
|
chunk = im.crop((0, y, 128, y + 32))
|
|
if y == 0:
|
|
chunk.save(
|
|
fp,
|
|
"TIFF",
|
|
tiffinfo={
|
|
TiffImagePlugin.IMAGEWIDTH: 128,
|
|
TiffImagePlugin.IMAGELENGTH: 128,
|
|
},
|
|
)
|
|
else:
|
|
fp.write(chunk.tobytes())
|
|
|
|
assert_image_equal_tofile(im, tmpfile)
|
|
|
|
def test_close_on_load_exclusive(self, tmp_path: Path) -> None:
|
|
# similar to test_fd_leak, but runs on unixlike os
|
|
tmpfile = tmp_path / "temp.tif"
|
|
|
|
with Image.open("Tests/images/uint16_1_4660.tif") as im:
|
|
im.save(tmpfile)
|
|
|
|
im = Image.open(tmpfile)
|
|
fp = im.fp
|
|
assert not fp.closed
|
|
im.load()
|
|
assert fp.closed
|
|
|
|
def test_close_on_load_nonexclusive(self, tmp_path: Path) -> None:
|
|
tmpfile = tmp_path / "temp.tif"
|
|
|
|
with Image.open("Tests/images/uint16_1_4660.tif") as im:
|
|
im.save(tmpfile)
|
|
|
|
with open(tmpfile, "rb") as f:
|
|
im = Image.open(f)
|
|
fp = im.fp
|
|
assert not fp.closed
|
|
im.load()
|
|
assert not fp.closed
|
|
|
|
# Ignore this UserWarning which triggers for four tags:
|
|
# "Possibly corrupt EXIF data. Expecting to read 50404352 bytes but..."
|
|
@pytest.mark.filterwarnings("ignore:Possibly corrupt EXIF data")
|
|
# Ignore this UserWarning:
|
|
@pytest.mark.filterwarnings("ignore:Truncated File Read")
|
|
@pytest.mark.skipif(
|
|
not os.path.exists("Tests/images/string_dimension.tiff"),
|
|
reason="Extra image files not installed",
|
|
)
|
|
def test_string_dimension(self) -> None:
|
|
# Assert that an error is raised if one of the dimensions is a string
|
|
with Image.open("Tests/images/string_dimension.tiff") as im:
|
|
with pytest.raises(OSError):
|
|
im.load()
|
|
|
|
@pytest.mark.timeout(6)
|
|
@pytest.mark.filterwarnings("ignore:Truncated File Read")
|
|
def test_timeout(self, monkeypatch: pytest.MonkeyPatch) -> None:
|
|
with Image.open("Tests/images/timeout-6646305047838720") as im:
|
|
monkeypatch.setattr(ImageFile, "LOAD_TRUNCATED_IMAGES", True)
|
|
im.load()
|
|
|
|
@pytest.mark.parametrize(
|
|
"test_file",
|
|
[
|
|
"Tests/images/oom-225817ca0f8c663be7ab4b9e717b02c661e66834.tif",
|
|
],
|
|
)
|
|
@pytest.mark.timeout(2)
|
|
def test_oom(self, test_file: str) -> None:
|
|
with pytest.raises(UnidentifiedImageError):
|
|
with pytest.warns(UserWarning):
|
|
with Image.open(test_file):
|
|
pass
|
|
|
|
|
|
@pytest.mark.skipif(not is_win32(), reason="Windows only")
|
|
class TestFileTiffW32:
|
|
def test_fd_leak(self, tmp_path: Path) -> None:
|
|
tmpfile = tmp_path / "temp.tif"
|
|
|
|
# this is an mmaped file.
|
|
with Image.open("Tests/images/uint16_1_4660.tif") as im:
|
|
im.save(tmpfile)
|
|
|
|
im = Image.open(tmpfile)
|
|
fp = im.fp
|
|
assert not fp.closed
|
|
with pytest.raises(OSError):
|
|
os.remove(tmpfile)
|
|
im.load()
|
|
assert fp.closed
|
|
|
|
# this closes the mmap
|
|
im.close()
|
|
|
|
# this should not fail, as load should have closed the file pointer,
|
|
# and close should have closed the mmap
|
|
os.remove(tmpfile)
|