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Prevent TIFFRGBAImageBegin from applying image orientation

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This commit is contained in:
Andrew Murray 2024-11-16 14:20:53 +11:00
parent 5bff2f3b28
commit 5ca487720c
2 changed files with 12 additions and 0 deletions
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11
Tests/test_file_libtiff.py
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@ -1030,6 +1030,17 @@ class TestFileLibTiff(LibTiffTestCase):
with Image.open("Tests/images/old-style-jpeg-compression.tif") as im:
assert_image_equal_tofile(im, "Tests/images/old-style-jpeg-compression.png")
def test_old_style_jpeg_orientation(self) -> None:
with open("Tests/images/old-style-jpeg-compression.tif", "rb") as fp:
data = fp.read()
# Set EXIF Orientation to 2
data = data[:102] + b"\x02" + data[103:]
with Image.open(io.BytesIO(data)) as im:
im = im.transpose(Image.Transpose.FLIP_LEFT_RIGHT)
assert_image_equal_tofile(im, "Tests/images/old-style-jpeg-compression.png")
def test_open_missing_samplesperpixel(self) -> None:
with Image.open(
"Tests/images/old-style-jpeg-compression-no-samplesperpixel.tif"

1
src/libImaging/TiffDecode.c
View File

@ -299,6 +299,7 @@ _decodeAsRGBA(Imaging im, ImagingCodecState state, TIFF *tiff) {
return -1;
}
img.orientation = ORIENTATION_TOPLEFT;
img.req_orientation = ORIENTATION_TOPLEFT;
img.col_offset = 0;