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Try to fix tests

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Choked on roundtrip, where a P;1 image was returned instead of a 1 image.
This commit is contained in:
artscoop 2015-03-04 22:40:04 +01:00
parent 7b657f6887
commit f953b98285
1 changed files with 6 additions and 1 deletions
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7
PIL/BmpImagePlugin.py
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@ -171,8 +171,13 @@ class BmpImageFile(ImageFile.ImageFile):
else:
padding = file_info['palette_padding']
palette = read(padding * file_info['colors'])
greyscale = True
indices = (0, 255) if file_info['colors'] == 2 else list(range(file_info['colors']))
#------------------- Check if greyscale and ignore palette if so
greyscale = all([palette[ind] == palette[ind+1] == palette[ind+2] == ind / padding for ind in range(0, len(palette), padding)])
for ind in indices:
rgb = palette[ind*padding:ind*padding + 3]
if rgb != o8(ind) * 3:
greyscale = False
#--------- If all colors are grey, white or black, ditch palette
if greyscale:
self.mode = "1" if file_info['colors'] == 2 else "L"