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Fixed loading L mode RLE8 images

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This commit is contained in:
Andrew Murray 2022-06-20 21:01:10 +10:00
parent 5fc3b6e5bb
commit 3e8a9b2165
3 changed files with 5 additions and 1 deletions
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Tests/images/hopper_rle8_greyscale.bmp Normal file
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3
Tests/test_file_bmp.py
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@ -134,6 +134,9 @@ def test_rle8():
with Image.open("Tests/images/hopper_rle8.bmp") as im: with Image.open("Tests/images/hopper_rle8.bmp") as im:
assert_image_similar_tofile(im.convert("RGB"), "Tests/images/hopper.bmp", 12) assert_image_similar_tofile(im.convert("RGB"), "Tests/images/hopper.bmp", 12)
with Image.open("Tests/images/hopper_rle8_greyscale.bmp") as im:
assert_image_equal_tofile(im, "Tests/images/bw_gradient.png")
# This test image has been manually hexedited # This test image has been manually hexedited
# to have rows with too much data # to have rows with too much data
with Image.open("Tests/images/hopper_rle8_row_overflow.bmp") as im: with Image.open("Tests/images/hopper_rle8_row_overflow.bmp") as im:

3
src/PIL/BmpImagePlugin.py
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@ -321,7 +321,8 @@ class BmpRleDecoder(ImageFile.PyDecoder):
# align to 16-bit word boundary # align to 16-bit word boundary
if self.fd.tell() % 2 != 0: if self.fd.tell() % 2 != 0:
self.fd.seek(1, os.SEEK_CUR) self.fd.seek(1, os.SEEK_CUR)
self.set_as_raw(bytes(data), ("P", 0, self.args[-1])) rawmode = "L" if self.mode == "L" else "P"
self.set_as_raw(bytes(data), (rawmode, 0, self.args[-1]))
return -1, 0 return -1, 0