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This commit is contained in:
Andrew Murray 2025-04-15 22:35:12 +10:00
parent 507fefbce4
commit 6ab93935a7
1 changed files with 6 additions and 22 deletions
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28
src/PIL/SgiImagePlugin.py
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@ -82,17 +82,10 @@ class SgiImageFile(ImageFile.ImageFile):
# zsize : channels count # zsize : channels count
zsize = i16(s, 10) zsize = i16(s, 10)
# layout
layout = bpc, dimension, zsize
# determine mode from bits/zsize # determine mode from bits/zsize
rawmode = ""
try: try:
rawmode = MODES[layout] rawmode = MODES[(bpc, dimension, zsize)]
except KeyError: except KeyError:
pass
if rawmode == "":
msg = "Unsupported SGI image mode" msg = "Unsupported SGI image mode"
raise ValueError(msg) raise ValueError(msg)
@ -156,24 +149,15 @@ def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
# Run-Length Encoding Compression - Unsupported at this time # Run-Length Encoding Compression - Unsupported at this time
rle = 0 rle = 0
# Number of dimensions (x,y,z)
dim = 3
# X Dimension = width / Y Dimension = height # X Dimension = width / Y Dimension = height
x, y = im.size x, y = im.size
if im.mode == "L" and y == 1:
dim = 1
elif im.mode == "L":
dim = 2
# Z Dimension: Number of channels # Z Dimension: Number of channels
z = len(im.mode) z = len(im.mode)
# Number of dimensions (x,y,z)
if dim in {1, 2}: if im.mode == "L":
z = 1 dim = 1 if y == 1 else 2
else:
# assert we've got the right number of bands. dim = 3
if len(im.getbands()) != z:
msg = f"incorrect number of bands in SGI write: {z} vs {len(im.getbands())}"
raise ValueError(msg)
# Minimum Byte value # Minimum Byte value
pinmin = 0 pinmin = 0