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Merge pull request #7302 from radarhere/png_i16

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Allow saving I;16B images as PNG
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Andrew Murray 2023-10-06 15:45:58 +11:00 committed by GitHub
commit 2d9c4e663f
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2 changed files with 3 additions and 2 deletions
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4
Tests/test_file_png.py
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@ -92,11 +92,11 @@ class TestFilePng:
assert im.format == "PNG"
assert im.get_format_mimetype() == "image/png"
for mode in ["1", "L", "P", "RGB", "I", "I;16"]:
for mode in ["1", "L", "P", "RGB", "I", "I;16", "I;16B"]:
im = hopper(mode)
im.save(test_file)
with Image.open(test_file) as reloaded:
if mode == "I;16":
if mode in ("I;16", "I;16B"):
reloaded = reloaded.convert(mode)
assert_image_equal(reloaded, im)

1
src/PIL/PngImagePlugin.py
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@ -1042,6 +1042,7 @@ _OUTMODES = {
"LA": ("LA", b"\x08\x04"),
"I": ("I;16B", b"\x10\x00"),
"I;16": ("I;16B", b"\x10\x00"),
"I;16B": ("I;16B", b"\x10\x00"),
"P;1": ("P;1", b"\x01\x03"),
"P;2": ("P;2", b"\x02\x03"),
"P;4": ("P;4", b"\x04\x03"),