python-pillow/Pillow
1
1
Fork 0
mirror of https://github.com/python-pillow/Pillow.git synced 2025-03-03 11:35:52 +03:00
Code Issues Packages Projects Releases Wiki Activity

Clip I;16 to be unsigned, not signed

Browse Source
This commit is contained in:
Andrew Murray 2022-03-05 13:42:39 +11:00
parent 38f4660d9e
commit c8b69a78f3
2 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
Tests/test_image_convert.py
View File

@ -70,6 +70,11 @@ def test_16bit():
with Image.open("Tests/images/16bit.cropped.tif") as im:
_test_float_conversion(im)
for color in (65535, 65536):
im = Image.new("I", (1, 1), color)
im_i16 = im.convert("I;16")
assert im_i16.getpixel((0, 0)) == 65535
def test_16bit_workaround():
with Image.open("Tests/images/16bit.cropped.tif") as im:

2
src/libImaging/Convert.c
View File

@ -37,7 +37,7 @@
#define MAX(a, b) (a) > (b) ? (a) : (b)
#define MIN(a, b) (a) < (b) ? (a) : (b)
#define CLIP16(v) ((v) <= -32768 ? -32768 : (v) >= 32767 ? 32767 : (v))
#define CLIP16(v) ((v) <= 0 ? 0 : (v) >= 65535 ? 65535 : (v))
/* ITU-R Recommendation 601-2 (assuming nonlinear RGB) */
#define L(rgb) ((INT32)(rgb)[0] * 299 + (INT32)(rgb)[1] * 587 + (INT32)(rgb)[2] * 114)