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Merge pull request #4471 from radarhere/exif_imagemagick

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Added reading of earlier ImageMagick PNG EXIF data
This commit is contained in:
Hugo van Kemenade 2020-03-26 13:42:58 +02:00 committed by GitHub
commit 3970db0535
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3 changed files with 21 additions and 4 deletions
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11
Tests/test_file_png.py
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@ -592,8 +592,15 @@ class TestFilePng:
with Image.open("Tests/images/hopper_idat_after_image_end.png") as im:
assert im.text == {"TXT": "VALUE", "ZIP": "VALUE"}
def test_exif(self):
with Image.open("Tests/images/exif.png") as im:
@pytest.mark.parametrize(
"test_file",
[
"Tests/images/exif.png", # With an EXIF chunk
"Tests/images/exif_imagemagick.png", # With an ImageMagick zTXt chunk
],
)
def test_exif(self, test_file):
with Image.open(test_file) as im:
exif = im._getexif()
assert exif[274] == 1

14
src/PIL/PngImagePlugin.py
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@ -694,14 +694,24 @@ class PngImageFile(ImageFile.ImageFile):
def _getexif(self):
if "exif" not in self.info:
self.load()
if "exif" not in self.info:
if "exif" not in self.info and "Raw profile type exif" not in self.info:
return None
return dict(self.getexif())
def getexif(self):
if "exif" not in self.info:
self.load()
return ImageFile.ImageFile.getexif(self)
if self._exif is None:
self._exif = Image.Exif()
exif_info = self.info.get("exif")
if exif_info is None and "Raw profile type exif" in self.info:
exif_info = bytes.fromhex(
"".join(self.info["Raw profile type exif"].split("\n")[3:])
)
self._exif.load(exif_info)
return self._exif
# --------------------------------------------------------------------