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Support JPEG2000 RGBA palettes #8256

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merged 1 commit into from
Sep 4, 2024
Merged

Support JPEG2000 RGBA palettes #8256

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7 changes: 7 additions & 0 deletions Tests/test_file_jpeg2k.py
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Original file line number Diff line number Diff line change
Expand Up @@ -391,6 +391,13 @@ def test_pclr() -> None:
assert len(im.palette.colors) == 256
assert im.palette.colors[(255, 255, 255)] == 0

with Image.open(
f"{EXTRA_DIR}/147af3f1083de4393666b7d99b01b58b_signal_sigsegv_130c531_6155_5136.jp2"
) as im:
assert im.mode == "P"
assert len(im.palette.colors) == 139
assert im.palette.colors[(0, 0, 0, 0)] == 0


def test_comment() -> None:
with Image.open("Tests/images/comment.jp2") as im:
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2 changes: 1 addition & 1 deletion src/PIL/Jpeg2KImagePlugin.py
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Expand Up @@ -205,7 +205,7 @@ def _parse_jp2_header(
if bitdepth > max_bitdepth:
max_bitdepth = bitdepth
if max_bitdepth <= 8:
palette = ImagePalette.ImagePalette()
palette = ImagePalette.ImagePalette("RGBA" if npc == 4 else "RGB")
for i in range(ne):
color: list[int] = []
for value in header.read_fields(">" + ("B" * npc)):
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