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Adjust BITSPERSAMPLE to match SAMPLESPERPIXEL

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This commit is contained in:
Andrew Murray 2022-05-04 22:11:10 +10:00
parent 9d988dab6a
commit 4dc1a55f65
1 changed files with 9 additions and 9 deletions
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18
src/PIL/TiffImagePlugin.py
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@ -1355,19 +1355,19 @@ class TiffImageFile(ImageFile.ImageFile):
bps_count = 1
bps_count += len(extra_tuple)
bps_actual_count = len(bps_tuple)
if bps_count < bps_actual_count:
# If a file has more values in bps_tuple than expected,
# remove the excess.
bps_tuple = bps_tuple[:bps_count]
elif bps_count > bps_actual_count and bps_actual_count == 1:
# If a file has only one value in bps_tuple, when it should have more,
# presume it is the same number of bits for all of the samples.
bps_tuple = bps_tuple * bps_count
samples_per_pixel = self.tag_v2.get(
SAMPLESPERPIXEL,
3 if self._compression == "tiff_jpeg" and photo in (2, 6) else 1,
)
if samples_per_pixel < bps_actual_count:
# If a file has more values in bps_tuple than expected,
# remove the excess.
bps_tuple = bps_tuple[:samples_per_pixel]
elif samples_per_pixel > bps_actual_count and bps_actual_count == 1:
# If a file has only one value in bps_tuple, when it should have more,
# presume it is the same number of bits for all of the samples.
bps_tuple = bps_tuple * samples_per_pixel
if len(bps_tuple) != samples_per_pixel:
raise SyntaxError("unknown data organization")