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Fix 9-bit JPEG 2000 images not using I;16
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Tests/images/9bit.j2k
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BIN
Tests/images/9bit.j2k
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@ -446,3 +446,9 @@ def test_plt_marker() -> None:
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hdr = out.read(2)
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hdr = out.read(2)
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length = _binary.i16be(hdr)
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length = _binary.i16be(hdr)
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out.seek(length - 2, os.SEEK_CUR)
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out.seek(length - 2, os.SEEK_CUR)
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def test_9bit():
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# Test 9-bit images are decoded to I;16
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with Image.open("Tests/images/9bit.j2k") as im:
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assert im.mode == "I;16"
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assert im.size == (128, 128)
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@ -114,7 +114,7 @@ def _parse_codestream(fp):
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size = (xsiz - xosiz, ysiz - yosiz)
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size = (xsiz - xosiz, ysiz - yosiz)
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if csiz == 1:
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if csiz == 1:
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if (yrsiz[0] & 0x7F) > 8:
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if (yrsiz[0] & 0x7F) + 1 > 8:
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mode = "I;16"
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mode = "I;16"
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else:
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else:
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mode = "L"
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mode = "L"
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