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Improved I;16N support #6834

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Merged
merged 6 commits into from
Mar 13, 2023
Merged

Improved I;16N support #6834

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700a8e9
Support converting between I;16N and L
radarhere Dec 28, 2022
e908e10
Support packing I;16N
radarhere Dec 28, 2022
8cfc256
Support unpacking I;16N
radarhere Dec 28, 2022
a0e1608
Support accessing I;16N pixels
radarhere Dec 28, 2022
f8d9326
Merge branch 'main' into i16n
radarhere Mar 13, 2023
023d434
Added release notes for #6834
radarhere Mar 13, 2023
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Support unpacking I;16N
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@radarhere
radarhere committed Dec 28, 2022
commit 8cfc25618f1f66d32dad778be92aac16e34bcc6d
2 changes: 2 additions & 0 deletions Tests/test_lib_pack.py
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Original file line number Diff line number Diff line change
Expand Up @@ -764,10 +764,12 @@ def test_I16(self):
self.assert_unpack("I;16", "I;16N", 2, 0x0201, 0x0403, 0x0605)
self.assert_unpack("I;16B", "I;16N", 2, 0x0201, 0x0403, 0x0605)
self.assert_unpack("I;16L", "I;16N", 2, 0x0201, 0x0403, 0x0605)
self.assert_unpack("I;16N", "I;16N", 2, 0x0201, 0x0403, 0x0605)
else:
self.assert_unpack("I;16", "I;16N", 2, 0x0102, 0x0304, 0x0506)
self.assert_unpack("I;16B", "I;16N", 2, 0x0102, 0x0304, 0x0506)
self.assert_unpack("I;16L", "I;16N", 2, 0x0102, 0x0304, 0x0506)
self.assert_unpack("I;16N", "I;16N", 2, 0x0102, 0x0304, 0x0506)

def test_CMYK16(self):
self.assert_unpack("CMYK", "CMYK;16L", 8, (2, 4, 6, 8), (10, 12, 14, 16))
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1 change: 1 addition & 0 deletions src/libImaging/Unpack.c
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Expand Up @@ -1762,6 +1762,7 @@ static struct {
{"I;16", "I;16", 16, copy2},
{"I;16B", "I;16B", 16, copy2},
{"I;16L", "I;16L", 16, copy2},
{"I;16N", "I;16N", 16, copy2},

{"I;16", "I;16N", 16, unpackI16N_I16}, // LibTiff native->image endian.
{"I;16L", "I;16N", 16, unpackI16N_I16}, // LibTiff native->image endian.
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